subject:(Physical AND mechanical properties)

Colorado School of Mines

1. Gil Coury, Francisco. Solid solution strengthening mechanisms in high entropy alloys.

Degree: PhD, Metallurgical and Materials Engineering, 2018, Colorado School of Mines

► High Entropy Alloys (HEAs) are new and promising classes of metallic alloys for structural applications. HEA development is challenging, due to the vast compositional space… (more)

Subjects/Keywords: mechanical properties; high entropy alloys; physical metallurgy

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APA (6^th Edition):

Gil Coury, F. (2018). Solid solution strengthening mechanisms in high entropy alloys. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/172516

Chicago Manual of Style (16^th Edition):

Gil Coury, Francisco. “Solid solution strengthening mechanisms in high entropy alloys.” 2018. Doctoral Dissertation, Colorado School of Mines. Accessed January 26, 2021. http://hdl.handle.net/11124/172516.

MLA Handbook (7^th Edition):

Gil Coury, Francisco. “Solid solution strengthening mechanisms in high entropy alloys.” 2018. Web. 26 Jan 2021.

Vancouver:

Gil Coury F. Solid solution strengthening mechanisms in high entropy alloys. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2018. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/11124/172516.

Council of Science Editors:

Gil Coury F. Solid solution strengthening mechanisms in high entropy alloys. [Doctoral Dissertation]. Colorado School of Mines; 2018. Available from: http://hdl.handle.net/11124/172516

University of Manitoba

2. Khan, Mohammad Amil. Physical and microstructural properties of insulating hempcrete mixes and their impact as infill system on the foundations due to increase in dead load.

Degree: Civil Engineering, 2020, University of Manitoba

URL: http://hdl.handle.net/1993/34590

► Hempcrete is a particularly promising lightweight, porous, and breathable biocomposite material that has the potential to significantly reduce the embodied energy related to the construction… (more)

▼ Hempcrete is a particularly promising lightweight, porous, and breathable biocomposite material that has the potential to significantly reduce the embodied energy related to the construction of buildings while improving their indoor air quality. However, hempcrete’s properties and performance depend on various parameters such as ingredient amounts, binder type, hurd characteristics (e.g., particle size and porosity), and the amount of water. Therefore, there is a great need for research that will focus on the development and production of hempcrete mixes and materials using local, Canadian resources. This research study characterizes the physical, microstructural, and mechanical properties of nine hempcrete mixes developed using lime and eco-friendly pozzolans such as metakaolin, crushed brick, and natural hydraulic lime in varying relative proportions. Furthermore, it compares three different types of hempcrete walls against the conventionally insulated walls of a single-story house located in Winnipeg, using S-Timber 2019 software. The microstructure analysis of hurd particles showed their porous nature. The dry densities of all design mix range from 294.59 kg/m3 to 399.68 kg/m3, with the majority (⁓73%) falling between 320 kg/m3 and 370 kg/m3. The average compression strength of the developed samples ranged between 0.11 MPa and 0.51 MPa, whereas the average splitting tensile strength ranged between 0.010 MPa and 0.0348 MPa. The results show a positive correlation between the hempcrete’s mechanical properties and density, mainly, in the case of compressive strength. The microstructure analysis of all the design mixes exhibit adequate adhesion at the interface, and present high carbonation with some hydrates. The main findings suggest that locally sourced metakaolin and crushed brick are excellent alternatives to the expensive, imported hydraulic lime. The modeling analysis indicates an increase in the dead loads and foundation sizes due to hempcrete infill compared to the base case. The results also indicate that the best option for a house considering the increase in dead loads and foundation sizes, is a wall case that meets the energy code through the thinner wall composed of 100 mm of mineral wool and 140 mm of hempcrete. Advisors/Committee Members: Kavgic, Miroslava (Civil Engineering) (supervisor), Delijani, Farhoud (Biosystems Engineering).

Subjects/Keywords: Hempcrete; Mechanical properties; Microstructure; Dead loads; Foundation sizes; Physical properties

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APA (6^th Edition):

Khan, M. A. (2020). Physical and microstructural properties of insulating hempcrete mixes and their impact as infill system on the foundations due to increase in dead load. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/34590

Chicago Manual of Style (16^th Edition):

Khan, Mohammad Amil. “Physical and microstructural properties of insulating hempcrete mixes and their impact as infill system on the foundations due to increase in dead load.” 2020. Masters Thesis, University of Manitoba. Accessed January 26, 2021. http://hdl.handle.net/1993/34590.

MLA Handbook (7^th Edition):

Khan, Mohammad Amil. “Physical and microstructural properties of insulating hempcrete mixes and their impact as infill system on the foundations due to increase in dead load.” 2020. Web. 26 Jan 2021.

Vancouver:

Khan MA. Physical and microstructural properties of insulating hempcrete mixes and their impact as infill system on the foundations due to increase in dead load. [Internet] [Masters thesis]. University of Manitoba; 2020. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1993/34590.

Council of Science Editors:

Khan MA. Physical and microstructural properties of insulating hempcrete mixes and their impact as infill system on the foundations due to increase in dead load. [Masters Thesis]. University of Manitoba; 2020. Available from: http://hdl.handle.net/1993/34590

Swedish University of Agricultural Sciences

3. Ali, Alexandre Charifo. Physical-mechanical properties and natural durability of lesser used wood species from Mozambique.

Degree: 2011, Swedish University of Agricultural Sciences

URL: http://pub.epsilon.slu.se/8079/

► The aim of this study is to assess properties of lesser used/known timbers from Mozambique. The studied species were ncurri (Icuria dunensis Wieringa), ntholo (Pseudolachnostylis… (more)

▼ The aim of this study is to assess properties of lesser used/known timbers from Mozambique. The studied species were ncurri (Icuria dunensis Wieringa), ntholo (Pseudolachnostylis maprounaefolia Pax), metil (Sterculia appendiculata K. Schum), namuno (Acacia nigrescens Oliv.) and muanga (Pericopsis angolensis Meeuwen). A comprehensive literature review found the Mozambique timber sector to be dominated by very few hardwood species while the rest of 118 lesser used wood species are almost unexplored. The above mentioned lesser used timbers were selected and subjected to descriptive and comparative analyses aiming at describing the physical-mechanical properties and natural durability with regard to prospective end uses. Standard test methods determined density, moisture content, dimensional stability characteristics, colour, natural durability and a number of mechanical properties of the selected lesser used timbers. The study revealed that ntholo and ncurri are heavy timbers with a density in the range of 850-1100 kg/m3 and very low dimensional changes. Metil is a medium light wood with an average density of 550 kg/m3 at 12% moisture content and a coefficient of anisotropy of 1.8 from green to oven-dry state. End use assessments suggest that the timbers of ntholo, muanga and namuno can be used in similar applications as the well known timbers, e.g. internal joineries, tool handles and furniture. Metil timber seems suitable for packaging boxes, plywood and construction purposes. In terms of natural durability, the results showed that heartwood of namuno, muanga and ntholo can be classified as very durable to deterioration and degradation caused by fungi and termites. These timbers showed good performance when untreated samples were exposed in- and above ground field tests providing a good indication of the expected service life and outdoor use features. Wood of metil was classified as non durable to any of the considered hazards and is not recommended for exterior uses unless treated with appropriate wood preservatives. The study determined ntholo timber mechanical properties and examined interrelationships with density and anatomical features of ntholo through regression and correlation analyses. The study found ntholo to be a very dense timber with high mechanical strength in comparison to well known timbers. The regression analyses show that both ntholo sapwood and heartwood densities are poor predictors for the tested mechanical properties, although may provide some indication of tested properties. All tested properties of ntholo sapwood were influenced mainly by ground tissue proportions, while heartwood properties were described by more leveled anatomical predictors. Fiber length was the only anatomical feature significantly correlated to density and all tested mechanical properties of ntholo. The number of vessels/mm2 and % vessels were not significantly correlated to any of the measured properties but appeared to be key anatomical features for predictions under regression analysis. The integrated analysis of…

Subjects/Keywords: wood properties; mechanical properties; hardwood; uses; mozambique; Lesser used timbers; mechanical properties; Mozambique; natural durability; physical properties

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APA (6^th Edition):

Ali, A. C. (2011). Physical-mechanical properties and natural durability of lesser used wood species from Mozambique. (Doctoral Dissertation). Swedish University of Agricultural Sciences. Retrieved from http://pub.epsilon.slu.se/8079/

Chicago Manual of Style (16^th Edition):

Ali, Alexandre Charifo. “Physical-mechanical properties and natural durability of lesser used wood species from Mozambique.” 2011. Doctoral Dissertation, Swedish University of Agricultural Sciences. Accessed January 26, 2021. http://pub.epsilon.slu.se/8079/.

MLA Handbook (7^th Edition):

Ali, Alexandre Charifo. “Physical-mechanical properties and natural durability of lesser used wood species from Mozambique.” 2011. Web. 26 Jan 2021.

Vancouver:

Ali AC. Physical-mechanical properties and natural durability of lesser used wood species from Mozambique. [Internet] [Doctoral dissertation]. Swedish University of Agricultural Sciences; 2011. [cited 2021 Jan 26]. Available from: http://pub.epsilon.slu.se/8079/.

Council of Science Editors:

Ali AC. Physical-mechanical properties and natural durability of lesser used wood species from Mozambique. [Doctoral Dissertation]. Swedish University of Agricultural Sciences; 2011. Available from: http://pub.epsilon.slu.se/8079/

Anna University

4. Sridhar S. Development of porous castings;.

Degree: Development of porous castings, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/26158

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T h e development of porous castings has become attractive to newlineresearchers in recent years both in scientific and industrial applications In newlinepast any kind… (more)

Subjects/Keywords: mechanical engineering; physical and mechanical properties; porous castings

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APA (6^th Edition):

S, S. (2014). Development of porous castings;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/26158

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

S, Sridhar. “Development of porous castings;.” 2014. Thesis, Anna University. Accessed January 26, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/26158.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

S, Sridhar. “Development of porous castings;.” 2014. Web. 26 Jan 2021.

Vancouver:

S S. Development of porous castings;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Jan 26]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/26158.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

S S. Development of porous castings;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/26158

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Federal de Viçosa

5. Fernando Mendes Botelho. Absorção de água por grãos de milho com diferentes níveis de danificação mecânica.

Degree: 2009, Universidade Federal de Viçosa

URL: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1969

► The aim of this work was to evaluate and model the water absorption process of corn grain submitted to soaking process at different levels of… (more)

▼ The aim of this work was to evaluate and model the water absorption process of corn grain submitted to soaking process at different levels of mechanical damage at different temperatures, as well to determinate and model its mechanical behavior during the process. Behavior of some physical properties was investigated in function of moisture content. Corn grain of AG 1510 variety were utilized, with initial moisture content of 0.142 (decimal d.b.) obtained at a small producer from Viçosa (MG) city area. Different mechanical damage levels were induced at grains, correlating with electrical conductivity. At soaking process, solution of 0.2 % of sulfur dioxide (SO2 ) and 0.55 % of lactic acid (C3H6O3) in distilled water were used, referring to wet milling conventional process of corn grain, at temperatures of (40, 50, 60 and 70) C and mechanical damage levels analyzed indirectly through electrical conductivity of (2.847, 14.077, 22.261, 29.194 and 32.971) μS cm-1 g-1. Soaking process modeling was performed by Pelegs model. Effective diffusivity coefficient to hydration process of corn grain was obtained through observed data adjustment of liquid diffusivity model based on Ficks second law, and its relationship with temperature was described by Arrhenius equation. Bulk and real densities, porosity, circularity, sphericity and volumetric expansion were evaluated to corn grain without induced mechanical damage (witness) in function of moisture content. Mechanical properties were also determined: force to a specific deformation of 0.001 m, proportional deformity modulus, deformation energy and resilient modulus, evaluating the force-deformation curve, to different moisture content and physical damage levels. Was concluded, according to obtained results: (a) structural alterations caused by induced mechanical damage at corn grain altered product water absorption rates; (b) Pelegs model adequately adjusted to observed data to entire conditions utilized; (c) effective diffusivity coefficients values increased with temperature and damage level increase, presenting magnitudes between (2.403 × 10-10 and 19.220 × 10-10) m2 s-1; (d) activation energy referred to water diffusivity of corn grain varied from (14.533 to 28.366) kJ mol-1, being that higher values is correlated to higher product physical integrity; (e) porosity increased linearly until achieve a certain level, and its behavior was described by a bi-segmented model. Bulk and real densities varied by a quadratic relation, where by values decreased until attain a minimal value, increasing afterwards. Circularity and sphericity of corn grain didnt varied with moisture content; (f) Unit volumetric expansion was best represented by Rahmans model. None of the conventional models used to predict volumetric variation of agricultural products adjusted satisfactorily to apparent volumetric expansion observed data of corn grain, therefore a new model was proposed; (g) The mechanical properties evaluated decreased significantly only with regard to moisture content variation.… Advisors/Committee Members: Paulo Roberto Cecon, Mauri Martins Teixeira, José Antonio Marques Pereira, Paulo César Correa, Sergio Mauricio Lopes Donzeles, Alexandre Gurgel, Márcio Arêdes Martins.

Subjects/Keywords: Maceração; Propriedades físicas; Propriedades mecânicas; ENGENHARIA AGRICOLA; Maceration; Physical properties; Mechanical properties

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APA (6^th Edition):

Botelho, F. M. (2009). Absorção de água por grãos de milho com diferentes níveis de danificação mecânica. (Thesis). Universidade Federal de Viçosa. Retrieved from http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1969

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Botelho, Fernando Mendes. “Absorção de água por grãos de milho com diferentes níveis de danificação mecânica.” 2009. Thesis, Universidade Federal de Viçosa. Accessed January 26, 2021. http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1969.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Botelho, Fernando Mendes. “Absorção de água por grãos de milho com diferentes níveis de danificação mecânica.” 2009. Web. 26 Jan 2021.

Vancouver:

Botelho FM. Absorção de água por grãos de milho com diferentes níveis de danificação mecânica. [Internet] [Thesis]. Universidade Federal de Viçosa; 2009. [cited 2021 Jan 26]. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1969.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Botelho FM. Absorção de água por grãos de milho com diferentes níveis de danificação mecânica. [Thesis]. Universidade Federal de Viçosa; 2009. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1969

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Washington State University

6. [No author]. PROFILE FORMING OF WOOD-STRAND COMPOSITES: PROCESSES, FORMING CHARACTERISTICS, AND PRODUCT PROPERTIES .

Degree: 2012, Washington State University

URL: http://hdl.handle.net/2376/4291

► Successful continuous or semi-continuous profile forming of wood-strand composites requires development of the underpinning science, including a suitable binding system, forming defect management, and process-property… (more)

▼ Successful continuous or semi-continuous profile forming of wood-strand composites requires development of the underpinning science, including a suitable binding system, forming defect management, and process-property relationships. A hybrid resin to stabilize the wood-strand preforms for subsequent profile forming and curing was devised using a mixture of poly(vinyl acetate) (PVAc) and phenol formaldehyde (PF) resins. This study examined the influence of PVAc on the cure kinetics of PF with differential scanning calorimetry. Results show that the cure kinetics of PF blended with PVAc does not differ significantly from neat PF resin for blend ratios of 1 or lower. The nth-order Borchardt Daniels model provided good prediction for the curing of adhesive system with a PVAc/PF ratio lower than 1 and neat PF resin. This blended resin system can potentially be used for continuous or semi-continuous profile forming of wood-strand composites.To gain an initial understanding, the complex state of deformations in wood-strand preforms during profiling forming was studied using single-curvature bending. Three failure types were identified based on the primary failure mechanisms in bending, buckling and shear slip. The initial failure in bending was predicted with a strength-based model with the goal of minimizing defects, such as buckling. A relationship between preform conditions, forming defects and thickness recovery was established.Profile-formed wood-strand composites showed much better shape conformance than profiled veneer-based composites. Slow closing rate and relatively high moisture content caused flat and peak-at-core vertical density profiles (VDP). Lower moisture content resulted in more uniform VDP.The internal stress state in the bend of the profile-formed V-specimens was determined with elastic curved beam theory. Delamination, dominated by radial stress, was the initial failure mode. The Chang-Springer failure criterion was used to determine the initiation of delamination failure within the bend of the V-specimens on roller support. V-specimens tested on pin support yielded greater bending strength than those on roller support. These support conditions provide lower and upper bounds for stresses in the bend of the specimen for some applications. This study adds to the limited knowledge base of profile forming of wood-strand composites and provides an insight into process-property relationships. Advisors/Committee Members: Yadama, Vikram (advisor).

Subjects/Keywords: Civil engineering; Adhesive; Forming characteristics; Mechanical properties; Physical properties; Profile forming; Wood-strand composites

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APA (6^th Edition):

author], [. (2012). PROFILE FORMING OF WOOD-STRAND COMPOSITES: PROCESSES, FORMING CHARACTERISTICS, AND PRODUCT PROPERTIES . (Thesis). Washington State University. Retrieved from http://hdl.handle.net/2376/4291

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

author], [No. “PROFILE FORMING OF WOOD-STRAND COMPOSITES: PROCESSES, FORMING CHARACTERISTICS, AND PRODUCT PROPERTIES .” 2012. Thesis, Washington State University. Accessed January 26, 2021. http://hdl.handle.net/2376/4291.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

author], [No. “PROFILE FORMING OF WOOD-STRAND COMPOSITES: PROCESSES, FORMING CHARACTERISTICS, AND PRODUCT PROPERTIES .” 2012. Web. 26 Jan 2021.

Vancouver:

author] [. PROFILE FORMING OF WOOD-STRAND COMPOSITES: PROCESSES, FORMING CHARACTERISTICS, AND PRODUCT PROPERTIES . [Internet] [Thesis]. Washington State University; 2012. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2376/4291.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

author] [. PROFILE FORMING OF WOOD-STRAND COMPOSITES: PROCESSES, FORMING CHARACTERISTICS, AND PRODUCT PROPERTIES . [Thesis]. Washington State University; 2012. Available from: http://hdl.handle.net/2376/4291

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Lithuanian University of Agriculture

7. Mauricas, Tadas. Medienos ir kitų biokuro žaliavų panaudojimo galimybių tyrimas granulėms gaminti.

Degree: Master, Mechanical Engineering, 2011, Lithuanian University of Agriculture

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110602_120707-85704 ;

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Šiame darbe yra nagrinėjamos vienalyčių ir mišrios sudėties granulių fizikinės-mechaninės savybės, jų svarba tolesniam transportavimui ir saugojimui. Literatūros apžvalgoje atlikta granulių gamybai tinkančios žaliavos turimi… (more)

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Šiame darbe yra nagrinėjamos vienalyčių ir mišrios sudėties granulių fizikinės-mechaninės savybės, jų svarba tolesniam transportavimui ir saugojimui. Literatūros apžvalgoje atlikta granulių gamybai tinkančios žaliavos turimi resursai, gaminamų granulių fizikinės- mechaninės savybės, bei panaudojimo galimybių analizė. Eksperimentiniais tyrimais nustatyta medienos pjuvenų, medienos dulkių, durpių, medienos pjuvenų – šiaudų ir medienos pjuvenų – durpių granulių savybės. Tirtas minėtų granulių drėgnis, aerodinaminės savybės, granulių slydimo bei riedėjimo trinties koeficientus ant skirtingų slydimo ir riedėjimo paviršių, šių paviršių šiurkštumus, granulių atsparumą gniuždymui bei jų kaloringumą. Šie duomenys yra gana svarbūs projektuojant granulių gamybos technines ir technologines priemones. Bandymų rezultatai parodė, kad minėti mišiniai, sudaryti lygiomis dalimis pasižymi geresnėmis fizikinėmis-mechaninėmis savybėmis nei granulės, sudarytos iš vienalytės medžiagos žaliavos.

In this work there are analyzed monolithic and mixed structure physical - mechanical properties of pellets, their importance for the further transportation and storage. In the literature review there are done the resources of pellets production suitable to raw material, produced pellets physical-mechanical properties and the analysis of the possibility of utilization. In experimental research there are estimated wood sawdust, wood dust, peat, wood sawdust - straw and wood sawdust - peat pellets properties. There was investigated the moisture of pellets, the content and the aerodynamic properties of grain sliding and rolling friction coefficients on the different slip and rolling surface of the surface roughness, grain and resistance to compression of the calorific value. These data are quite important in the design manufacture granules of technical and technological tools. Test results showed that these mixtures of equal parts have better physico-mechanical properties than pellets consisting of a homogeneous raw materials.

Advisors/Committee Members: Palšauskas, Mečys (Master’s thesis supervisor), Jasinskas, Algirdas (Master’s thesis reviewer), Jankauskas, Vytenis (Master’s thesis reviewer).

Subjects/Keywords: Biokuras; Granulė; Fizikinės-mechaninės savybės; Biofuels; A pellet; Physical-mechanical properties

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APA (6^th Edition):

Mauricas, Tadas. (2011). Medienos ir kitų biokuro žaliavų panaudojimo galimybių tyrimas granulėms gaminti. (Masters Thesis). Lithuanian University of Agriculture. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110602_120707-85704 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

Mauricas, Tadas. “Medienos ir kitų biokuro žaliavų panaudojimo galimybių tyrimas granulėms gaminti.” 2011. Masters Thesis, Lithuanian University of Agriculture. Accessed January 26, 2021. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110602_120707-85704 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

Mauricas, Tadas. “Medienos ir kitų biokuro žaliavų panaudojimo galimybių tyrimas granulėms gaminti.” 2011. Web. 26 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

Mauricas, Tadas. Medienos ir kitų biokuro žaliavų panaudojimo galimybių tyrimas granulėms gaminti. [Internet] [Masters thesis]. Lithuanian University of Agriculture; 2011. [cited 2021 Jan 26]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110602_120707-85704 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

Mauricas, Tadas. Medienos ir kitų biokuro žaliavų panaudojimo galimybių tyrimas granulėms gaminti. [Masters Thesis]. Lithuanian University of Agriculture; 2011. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110602_120707-85704 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Univerzitet u Beogradu

8. Lovrić, Aleksandar, 1974- 12878695. Mogućnost primene termički modifikovanog topolovog furnira u proizvodnji furnirskih ploča.

Degree: Šumarski fakultet, 2019, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:20469/bdef:Content/get

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Prerada drveta - Primarna prerada drveta / Wood processing -Primary wood processing

Predmet istraživanja doktorske disertacije bio je da se ustanovi da li se kombinovanjem… (more)

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Prerada drveta - Primarna prerada drveta / Wood processing -Primary wood processing

Predmet istraživanja doktorske disertacije bio je da se ustanovi da li se kombinovanjem termiĉki modifikovanog i nemodifikovanog furnira topole može dobiti proizvod koji je dimenzionalno stabilniji u odnosu na klasiĉnu topolovu furnirsku ploĉu, uz istovremeno minimalno narušavanje mehaniĉkih svojstava. Formati topolovog furnira termiĉki su modifikovani na temperaturama od 190 °C, 200 °C, 210 °C i 215 °C u trajanju od 1 h, uz prisustvo vodene pare kao zaštitnog sredstva. Pre termiĉke modifikacije ustanovljena je znaĉajna razlika u boji izmeĊu topolovog furnira nastalog iz zone beljike i iz zone lažne srĉevine. Sa stanovišta izjednaĉavanja boje, najbolji rezultati ostvareni su pomoću tretmana na 210 °C, dok tretmani na 190 i 200 °C nisu dali željeni efekat. Od dobijenih termiĉki tretiranih i od kontrolnih (netretiranih) formata izraĊeno je 13 razliĉitih tipova petoslojnih ploĉa (za svaki tip po 6 ploĉa). Presovanje ploĉa obavljeno je po suvom vrućem postupku presovanja u industrijskim uslovima, a kao vezivno sredstvo korišćen je MUF (melamin-ureaformaldehidni) lepak. Analize su pokazale da su na ravnotežnu vlažnost i dimenzionu stabilnost dobijenih ploĉa imali uticaj i termiĉki tretmani i konstrukcije ploĉa. Promena vlažnosti i dimenzija bila je manja sa porastom temperature režima, kao i sa povećanjem uĉešća termiĉki modifikovanog furnira u konstrukciji ploĉe. Ustanovljeno je da kontrolne ploĉe imaju znaĉajno veću tvrdoću u odnosu na sve druge tipove ploĉa. Pri poreĊenju razliĉitih režima, statistiĉki znaĉajna razlika u tvrdoći ploĉa postoji, ali samo se režim na 190 °C znaĉajno razlikuje od režima na 210 i 215 °C. Na osnovu analize rezultata, zakljuĉeno je da su termiĉki tretmani manje uticali na smanjenje modula elastiĉnosti nego na smanjenje savojne ĉvrstoće. Ispitivanje smicajne ĉvrstoće u slojevima lepka, pokazalo je da svi tipovi ploĉa zadovoljavaju uslove za upotrebu u enterijeru. Sa povećanjem zahteva (testovi za uslove povećane vlažnosti i za spoljašnju upotrebu), došlo je do znaĉajnog pada smicajne ĉvrstoće u slojevima lepka. Ovaj pad smicajne ĉvrstoće najverovatnije je posledica slabljenja kvaliteta lepljene veze pod dejstvom predtretmana. Prema svim ispitivanim svojstvima, tretmani na 200 °C i 210 °C su se pokazali kao optimalni, dok se tretman na 215 °C pokazao kao preoštar i ne treba ga koristiti za termiĉku modifikaciju furnira topole.

Advisors/Committee Members: Zdravković, Vladislav, 1961- 18982759.

Subjects/Keywords: Poplar; veneer; plywood; thermal modification; physical and mechanical plywood properties

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lovrić, Aleksandar, 1. 1. (2019). Mogućnost primene termički modifikovanog topolovog furnira u proizvodnji furnirskih ploča. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:20469/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lovrić, Aleksandar, 1974- 12878695. “Mogućnost primene termički modifikovanog topolovog furnira u proizvodnji furnirskih ploča.” 2019. Thesis, Univerzitet u Beogradu. Accessed January 26, 2021. https://fedorabg.bg.ac.rs/fedora/get/o:20469/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lovrić, Aleksandar, 1974- 12878695. “Mogućnost primene termički modifikovanog topolovog furnira u proizvodnji furnirskih ploča.” 2019. Web. 26 Jan 2021.

Vancouver:

Lovrić, Aleksandar 11. Mogućnost primene termički modifikovanog topolovog furnira u proizvodnji furnirskih ploča. [Internet] [Thesis]. Univerzitet u Beogradu; 2019. [cited 2021 Jan 26]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:20469/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lovrić, Aleksandar 11. Mogućnost primene termički modifikovanog topolovog furnira u proizvodnji furnirskih ploča. [Thesis]. Univerzitet u Beogradu; 2019. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:20469/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

9. Quinhones, Rogério. Fabricação e qualificação de placas compostas de serragem e plástico reciclável.

Degree: Mestrado, Recursos Florestais, 2007, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/11/11150/tde-13072007-092913/ ;

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A utilização de polímeros ligno-celulósicos combinados com polímeros artificiais na forma de materiais compostos é fruto do desenvolvimento de uma linha de pesquisa que tinha… (more)

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A utilização de polímeros ligno-celulósicos combinados com polímeros artificiais na forma de materiais compostos é fruto do desenvolvimento de uma linha de pesquisa que tinha como objetivo inicial a utilização dos primeiros como enchimento de uma matriz termofixa ou termoplástica aglutinante. Com o advento da necessidade do reaproveitamento de resíduos de processos industriais, as pesquisas e a utilização de resíduos fibrosos e partículas de madeira cresceram em importância e passaram a contribuir ainda mais decisivamente no desenvolvimento de novas técnicas, processos, equipamentos e insumos que possibilitam ampla gama de aplicações dos produtos obtidos. O presente trabalho objetivou a fabricação de placas compostas de serragem de duas espécies amplamente utilizadas em serrarias combinada com polietileno de baixa densidade reciclável (PEBD). Serragem e farinha de madeira de Pinus elliottii e Eucalyptus grandis , provenientes de lenho e de casca, foram separadas, beneficiadas e misturadas com partículas de PEBD também classificadas por tamanho, na proporção de 40% de madeira e 60% de plástico. A mistura foi prensada a 150 ° C por 30 minutos à pressão de 3 MPa. Foram fabricadas 44 placas de 6 mm de espessura nominal e 40 x 50 cm de lados, em 4 repetições de 11 tratamentos. Foram produzidos corpos-de-prova de todas as placas para os ensaios físicomecânicos segundo a norma ASTM D-1037, determinando-se a massa específica, o teor de umidade, a variação da massa e da espessura ocorridas em 2 e 24 horas de imersão em água, o módulo de elasticidade e o módulo de ruptura na flexão estática, a resistência à compressão e a força máxima de arrancamento de prego e de parafuso de fenda. O lenho de Pinus de granulometria fina combinado com PEBD fino apresentou as melhores propriedades físicomecânicas. Os tratamentos com lenho de Eucalyptus obtiveram o melhor desempenho geral e naqueles em que se utilizou a casca de Pinus os resultados não foram satisfatórios. Dentre os tratamentos que utilizaram cascas, a de Eucalyptus de granulometria grossa foi superior. O lenho de Pinus , principalmente em granulometrias mais finas e homogêneas revelaram-se promissores na utilização externa e as placas obtidas de casca de Pinus revelaram um grande potencial de utilização em usos internos não estruturais, como material alternativo.

Using ligno-celullose polymers combined with artificial polymers in form of composite material is result of a developing research line which had as initial objective the use of the firsts as just filling material in an agglutinant thermoplastic matrix. Due to the necessity of reusing industrial processing residues, the research and utilization of fiber and woody particles had grown in importance and started to contribute on the development of new techniques, processes, equipment and materials that make possible creating a huge variety of products and applications. The present work had the objective of manufacturing composite boards using sawdust from two different species widely used in sawmill combined with…

Advisors/Committee Members: Garcia, Jose Nivaldo.

Subjects/Keywords: Composite materials; Ensaios de propriedades mecânicas; Madeira (Propriedades físicas - propriedades mecânicas); Materiais compósitos; Mechanical properties tests; Polímeros (Materiais); Polymers (materials); Resíduos; Sawdust; Serragem; Waste; Wood (Physical properties - Mechanical properties)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Quinhones, R. (2007). Fabricação e qualificação de placas compostas de serragem e plástico reciclável. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/11/11150/tde-13072007-092913/ ;

Chicago Manual of Style (16^th Edition):

Quinhones, Rogério. “Fabricação e qualificação de placas compostas de serragem e plástico reciclável.” 2007. Masters Thesis, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-13072007-092913/ ;.

MLA Handbook (7^th Edition):

Quinhones, Rogério. “Fabricação e qualificação de placas compostas de serragem e plástico reciclável.” 2007. Web. 26 Jan 2021.

Vancouver:

Quinhones R. Fabricação e qualificação de placas compostas de serragem e plástico reciclável. [Internet] [Masters thesis]. University of São Paulo; 2007. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/11/11150/tde-13072007-092913/ ;.

Council of Science Editors:

Quinhones R. Fabricação e qualificação de placas compostas de serragem e plástico reciclável. [Masters Thesis]. University of São Paulo; 2007. Available from: http://www.teses.usp.br/teses/disponiveis/11/11150/tde-13072007-092913/ ;

10. Flaker, Christian Humberto Caicedo. Estudo da dispersão da nanopartícula em água e seu efeito nas propriedades de filmes nanocompósitos de gelatina.

Degree: Mestrado, Ciências da Engenharia de Alimentos, 2014, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-08092015-094651/ ;

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Uma das alternativas possíveis para substituir os materiais sintéticos na área de embalagem de alimentos é o desenvolvimento de filmes baseados em biopolímeros. Vários estudos… (more)

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Uma das alternativas possíveis para substituir os materiais sintéticos na área de embalagem de alimentos é o desenvolvimento de filmes baseados em biopolímeros. Vários estudos têm demostrado o melhoramento nas propriedades de filmes baseados em biopolímeros, devido à utilização de nanopartículas como reforço. No entanto, as melhorias observadas são ainda limitadas e pode-se considerar que isso é devido a problemas de dispersão das nanopartículas em água, especialmente quando se utiliza a técnica tipo casting. Assim, os objetivos deste projeto foram: A) estudar a qualidade da dispersão de nanopartículas de montemorilhonita em água, e B) estudar o efeito dessas dispersões sobre algumas propriedades físicas e funcionais de filmes de gelatina produzidos com elas. As nanopartículas foram dispersas em água na concentração de 1 g MMT/100 g solução, com três dispositivos: homogeneizador mecânico (UT), moinho coloidal (MC) e processador ultrassônico (US). As dispersões foram analisadas para determinação de tamanho das partículas e potencial zeta, e por microscopia eletrônica de varredura e microscopia de força atômica. Os filmes foram produzidos pela técnica de \"casting\", com 5 g de gelatina/100 g de solução filmogênica e 30 g de glicerol/100g de gelatina. A concentração de nanopartículas foi 0, 1, 3, 5 e 7 g de MMT/100g de gelatina. Os filmes de controle e nanocompósitos produzidos com as dispersões de montemorilhonita foram caracterizados para determinação de espessura, umidade, solubilidade, permeabilidade ao vapor de água, propriedades mecânicas por testes de tração e perfuração, cor e opacidade, brilho, microestrutura por microscopia eletrônica de varredura e microscopia de força atômica, transição vítrea por calorimetria diferencial de varredura, difração de raios-X, espectroscopia de infravermelho com transformada de Fourier e ângulo de contato. O potencial zeta e tamanho médio da partícula foi -53, -40, -47 mV e 377, 289, 395 nm, para as dispersões processadas por UT, US e MC, respectivamente. No geral, os filmes reforçados com montemorilhonita, foram 44% menos brilhantes e foram ligeiramente mais hidrofílicos do que os filmes de controle. A tensão na ruptura aumentou de 22 MPa para filmes de controle até 40 MPa, quando a concentração da montemorilhonita foi de até 5 g de MMT/100g de gelatina. A permeabilidade ao vapor de água não variou nos filmes nanocompósitos. O método de dispersão utilizado teve uma forte influência sobre a qualidade das dispersões, afetando o tamanho da partícula e potencial zeta, com efeito evidente sobre as propriedades físicas dos nanocompósitos. A concentração crítica de montemorilhonita como reforço pareceu estar limitada a 5 g de MMT/100 g de gelatina.

One of the possible alternatives to replace synthetic materials in the area of food packaging is the development of films based on biopolymers. Several studies have demonstrated the improvement in properties of films based on biopolymers due to the use of nanoparticles as reinforcement. However, the observed improvements are still…

Advisors/Committee Members: Sobral, Paulo José do Amaral.

Subjects/Keywords: Biodegradable films; Filmes biodegradáveis; Mechanical properties; Montemorilhonita; Montmorillonite; Physical properties; Propriedades físicas; Propriedades mecânicas; Protein; Proteína

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Flaker, C. H. C. (2014). Estudo da dispersão da nanopartícula em água e seu efeito nas propriedades de filmes nanocompósitos de gelatina. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/74/74132/tde-08092015-094651/ ;

Chicago Manual of Style (16^th Edition):

Flaker, Christian Humberto Caicedo. “Estudo da dispersão da nanopartícula em água e seu efeito nas propriedades de filmes nanocompósitos de gelatina.” 2014. Masters Thesis, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/74/74132/tde-08092015-094651/ ;.

MLA Handbook (7^th Edition):

Flaker, Christian Humberto Caicedo. “Estudo da dispersão da nanopartícula em água e seu efeito nas propriedades de filmes nanocompósitos de gelatina.” 2014. Web. 26 Jan 2021.

Vancouver:

Flaker CHC. Estudo da dispersão da nanopartícula em água e seu efeito nas propriedades de filmes nanocompósitos de gelatina. [Internet] [Masters thesis]. University of São Paulo; 2014. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-08092015-094651/ ;.

Council of Science Editors:

Flaker CHC. Estudo da dispersão da nanopartícula em água e seu efeito nas propriedades de filmes nanocompósitos de gelatina. [Masters Thesis]. University of São Paulo; 2014. Available from: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-08092015-094651/ ;

11. Moutinho, Victor Hugo Pereira. Influência da variabilidade dimensional e da densidade da madeira de Eucalyptus sp. e Corymbia sp. na qualidade do carvão.

Degree: PhD, Recursos Florestais, 2012, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/11/11150/tde-19022013-110220/ ;

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O presente trabalho objetivou a determinação e análise comparativa das propriedades físicas da madeira e do respectivo carvão vegetal, ao longo da direção radial e… (more)

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O presente trabalho objetivou a determinação e análise comparativa das propriedades físicas da madeira e do respectivo carvão vegetal, ao longo da direção radial e longitudinal do lenho de árvores de dez clones de alta produtividade de Eucalyptus e Corymbia. Para tanto, discos de diferentes alturas do tronco foram coletados de árvores das espécies, no município de Capelinha-MG, obtendo-se amostras para a determinação da densidade básica, contração linear e volumétrica, coeficiente de anisotropia e umidade inicial. Na sequência, os corpos de prova foram carbonizados, visando a determinação da densidade aparente, degradação linear e volumétrica, rendimento gravimétrico e resistência mecânica à compressão. Na avaliação do experimento, utilizou-se a análise de variância, segundo delineamento inteiramente casualizado e as análises de componentes principais (ACP), dissimilaridade e multivariada (correlação canônica) na avaliação comparativa entre as propriedades físicas da madeira e do carvão. Como resultados, verificou-se uma alta heterogeneidade entre as espécies estudadas, as quais dividiram-se em 4 grupos distintos, sendo que as contrações lineares e volumétricas mostraram-se independentes da densidade e com correlações significativas entre si. Após a carbonização, o agrupamento se fez diferente ao ocorrente para madeira, sendo que a densidade aparente apresentou alta correlação para as variáveis estudadas do carvão, a exceção da degradação linear longitudinal. A relação canônica apontou relações significativas positivas com a densidade aparente do carvão e também para o módulo de elasticidade, resistência à compressão, rendimento gravimétrico, degradação linear radial axial e tangencial. As contrações lineares e volumétricas da madeira pouco contribuíram para as propriedades do carvão. Os clones pertencentes ao gênero Corymbia mostraram-se mais promissores à produção de carvão.

This study aimed to make a comparative analysis and to determine the physical properties of wood and its charcoal along the radial and longitudinal directions of the wood of ten clones of Eucalyptus and Corymbia, of high productivity. Therefore, disks of different heights of the trunk were collected from tree species in the town of Capelinha, State of Minas Gerais - Brazil, obtaining test samples according to specific standard for determining the density, linear shrinkage and volumetric coefficient of anisotropy and initial moisture. Following, the samples were charred, aimed at determining the bulk density, volumetric and linear degradation, gravimetric yield and mechanical strength. For the evaluation of the experiment a variance analysis in a completely randomized statistical design and the principal component analysis (PCA) on comparative evaluation of the physical properties of wood was used. Multivariate dissimilarity (canonical relations) in the comparative evaluation of the physical properties of wood and charcoal was used as well. As a result, there was a high heterogeneity between the studied species, which were divided into four…

Advisors/Committee Members: Tomazello Filho, Mario.

Subjects/Keywords: Carvão vegetal - Propriedades mecânicas; Charcoal - Mechanical Properties; Clonagem; Cloning; Densidade da madeira; Eucalipto - Propriedades físicas; Eucalyptus - Physical Properties; Wood density

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Moutinho, V. H. P. (2012). Influência da variabilidade dimensional e da densidade da madeira de Eucalyptus sp. e Corymbia sp. na qualidade do carvão. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/11/11150/tde-19022013-110220/ ;

Chicago Manual of Style (16^th Edition):

Moutinho, Victor Hugo Pereira. “Influência da variabilidade dimensional e da densidade da madeira de Eucalyptus sp. e Corymbia sp. na qualidade do carvão.” 2012. Doctoral Dissertation, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-19022013-110220/ ;.

MLA Handbook (7^th Edition):

Moutinho, Victor Hugo Pereira. “Influência da variabilidade dimensional e da densidade da madeira de Eucalyptus sp. e Corymbia sp. na qualidade do carvão.” 2012. Web. 26 Jan 2021.

Vancouver:

Moutinho VHP. Influência da variabilidade dimensional e da densidade da madeira de Eucalyptus sp. e Corymbia sp. na qualidade do carvão. [Internet] [Doctoral dissertation]. University of São Paulo; 2012. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/11/11150/tde-19022013-110220/ ;.

Council of Science Editors:

Moutinho VHP. Influência da variabilidade dimensional e da densidade da madeira de Eucalyptus sp. e Corymbia sp. na qualidade do carvão. [Doctoral Dissertation]. University of São Paulo; 2012. Available from: http://www.teses.usp.br/teses/disponiveis/11/11150/tde-19022013-110220/ ;

12. Macedo, Laurenn Borges de. Painéis OSB de madeira Pinus sp. e adição de partículas de polipropileno biorientado (BOPP).

Degree: Mestrado, Estruturas, 2014, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/18/18134/tde-20032014-110248/ ;

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O setor da construção civil é um dos que mais consomem recursos naturais e utilizam energia de forma intensiva, gerando consideráveis impactos ambientais juntamente com… (more)

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O setor da construção civil é um dos que mais consomem recursos naturais e utilizam energia de forma intensiva, gerando consideráveis impactos ambientais juntamente com grande quantidade de resíduos. A utilização de produtos alternativos como painéis de madeira surge como uma possibilidade de redução de tais impactos. O Oriented Strand Board, desenvolvido para substituir o painel compensado, tem conquistado cada vez mais espaço na construção apesar de sua menor estabilidade dimensional perante o seu antecessor. A adição de resíduos, como o plástico, na matriz constituinte destes painéis representa alternativa de reaproveitamento destes descartes e economia de madeira no processo produtivo destes compósitos, além de proporcionar melhoria nas propriedades físicas dos mesmos. O objetivo deste trabalho foi confirmar a viabilidade técnica da produção de painéis OSB de madeira de Pinus sp. com adição de proporções de 20 e 30% de partículas de polipropileno biorientado em sua matriz constituinte e resina poliuretana à base de óleo de mamona. A avaliação de desempenho foi feita por intermédio das propriedades físicas e mecânicas dos painéis, determinadas atendendo as recomendações da EN 300 (1999). Os painéis foram classificados como OSB 4, de acordo com as propriedades físicas avaliadas, e OSB 1, considerando os módulos de elasticidade e ruptura obtidos em ensaios de flexão estática. A adesão interna, para os painéis produzidos com os parâmetros de processo adotados, não alcançou os valores exigidos pela citada norma. De todas as propriedades avaliadas, apenas inchamento em espessura e absorção de água foram influenciadas pela porcentagem de BOPP. Assim, considera-se comprovada a viabilidade técnica da produção dos painéis OSB deste trabalho, para aplicação na construção civil.

Building construction is one of the sectors that most consuming natural resources and use energy intensively, generating considerable environmental impacts coupled with large amount of waste. Employing alternative product like wood panels comes as a possibility to reduce these impacts. Oriented Strand Board, developed to substitute the plywood panel, has gained more space in the construction spite of its lower dimensional stability against its predecessor. The addition of plastic waste in constitutive matrix of these panels represents an alternative to reuse this kind of waste and wood economy in the productive process of these composites, besides improving their physical properties. The aim of this study was to evaluate the technical feasibility of producing OSB of Pinus sp. wood with the addition of various proportions of particles of bioriented polypropylene in its constitutive matrix and polyurethane resin based on castor oil with evaluation of physical and mechanical properties of these panels. In accordance with EN 300 (1999), the OSB panels have been classified as 4 in accordance with the physical properties assessed and as OSB 1 for the elasticity modules and rupture. Property of internal bond not presented the minimum values required by…

Advisors/Committee Members: Lahr, Francisco Antonio Rocco.

Subjects/Keywords: BOPP; BOPP; Mechanical properties; Oriented Strand Board; Oriented Strand Board; Physical properties; Propriedades físicas; Propriedades mecânicas

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Macedo, L. B. d. (2014). Painéis OSB de madeira Pinus sp. e adição de partículas de polipropileno biorientado (BOPP). (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/18/18134/tde-20032014-110248/ ;

Chicago Manual of Style (16^th Edition):

Macedo, Laurenn Borges de. “Painéis OSB de madeira Pinus sp. e adição de partículas de polipropileno biorientado (BOPP).” 2014. Masters Thesis, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-20032014-110248/ ;.

MLA Handbook (7^th Edition):

Macedo, Laurenn Borges de. “Painéis OSB de madeira Pinus sp. e adição de partículas de polipropileno biorientado (BOPP).” 2014. Web. 26 Jan 2021.

Vancouver:

Macedo LBd. Painéis OSB de madeira Pinus sp. e adição de partículas de polipropileno biorientado (BOPP). [Internet] [Masters thesis]. University of São Paulo; 2014. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/18/18134/tde-20032014-110248/ ;.

Council of Science Editors:

Macedo LBd. Painéis OSB de madeira Pinus sp. e adição de partículas de polipropileno biorientado (BOPP). [Masters Thesis]. University of São Paulo; 2014. Available from: http://www.teses.usp.br/teses/disponiveis/18/18134/tde-20032014-110248/ ;

Cranfield University

13. Ruiz Trejo, Citlalli Elizabeth. Feasibility study on maize husk as resource for a novel composite material.

Degree: PhD, 2018, Cranfield University

URL: http://dspace.lib.cranfield.ac.uk/handle/1826/14905 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794812

► Over the past decades, a dramatic increment on the production of maize husk (MH) in Mexico has been observed. Encouraging the study of this copious… (more)

▼ Over the past decades, a dramatic increment on the production of maize husk (MH) in Mexico has been observed. Encouraging the study of this copious material as an alternative for the manufacture of composite materials, thereby enabling the use of MH. Offering advantages such as availability, renewability and more importantly the possibility to reduce local pollution levels without compromising the environmental integrity. The purpose of this research was to develop a maize husk-based composite (MHC) at a lab scale through a transdisciplinary systemic design approach (SDA). The SDA framework was developed from a designer point of view to confront the concerns of MH overproduction, including social, environmental, technical and economic implications. The investigated fibres were obtained from two harvesting methods: manual (MASH) and mechanical (ASPROS). Both MHF's performance was lower than other natural fibres. ASPROS fibres showed a steadier mechanical performance with a cross-section area of 0.14 mm², an ultimate tensile strength of 45.75 MPa, a 7.65 % of elongation and Young's modulus of 1.95 MPa. Nineteen different MHC blends were manufactured, at a concentration of 70/30 MH/binder. Four MH sizes with three binding systems were tested; the sizes were (1) whole husk, (2) chopped, (3) milled and (4) 10 % NaOH alkalinised fibres. The binding systems included: (A) a board made rearranging MH's natural components through thermal fusion, (B) MH mixed with lignin for the production of non-resin MHC boards, and (C) MH blended with a super SAP® CPM epoxy resin (SSE). The sizereduction (milled and alkali) improved MHF' surface interfacial bonding with SSE resin, however, only alkali treated presented enhanced tensile properties. Overall, the M30 boards met the properties of general purpose fibreboards for use under humid conditions (BS EN622-5:2009). The AK30 and M20 boards properties remained within the general-purpose fibreboards for use in dry conditions (BS EN622-5:2009).

Subjects/Keywords: Agro-waste; maize husk; non-wood fibreboard; mechanical properties; physical properties; natural fibres; bio-based material; system design; sustainable innovation

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ruiz Trejo, C. E. (2018). Feasibility study on maize husk as resource for a novel composite material. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/14905 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794812

Chicago Manual of Style (16^th Edition):

Ruiz Trejo, Citlalli Elizabeth. “Feasibility study on maize husk as resource for a novel composite material.” 2018. Doctoral Dissertation, Cranfield University. Accessed January 26, 2021. http://dspace.lib.cranfield.ac.uk/handle/1826/14905 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794812.

MLA Handbook (7^th Edition):

Ruiz Trejo, Citlalli Elizabeth. “Feasibility study on maize husk as resource for a novel composite material.” 2018. Web. 26 Jan 2021.

Vancouver:

Ruiz Trejo CE. Feasibility study on maize husk as resource for a novel composite material. [Internet] [Doctoral dissertation]. Cranfield University; 2018. [cited 2021 Jan 26]. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/14905 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794812.

Council of Science Editors:

Ruiz Trejo CE. Feasibility study on maize husk as resource for a novel composite material. [Doctoral Dissertation]. Cranfield University; 2018. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/14905 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.794812

14. Aldroe, Hanaya. Analyse des propriétés physiques et mécaniques des nanocomposites polyamide 12 / cloisite® 30B en lien avec leurs nanostructures : Analysis of the physical and mechanical properties of nanocomposites polyamide 12 / Cloisite® 30B and their relations with structure.

Degree: Docteur es, Génie Mécanique et Productique, 2014, Université François-Rabelais de Tours

URL: http://www.theses.fr/2014TOUR4034

►

Les nanocomposites suscitent un intérêt croissant depuis leur développement dans les années 90 par Toyota. Par conséquent, l'amélioration des propriétés de ce type de matériaux… (more)

▼

Les nanocomposites suscitent un intérêt croissant depuis leur développement dans les années 90 par Toyota. Par conséquent, l'amélioration des propriétés de ce type de matériaux est un enjeu fort tant d'un point de vue fondamental qu'industriel. Cette amélioration peut passer par un choix pertinent des charges renforçantes ajoutées à la matrice notamment en ce qui concerne le type, la géométrie, la proportion et le traitement de ces charges. L’optimisation des paramètres d’élaboration du mélange y joue aussi un rôle important. L’objectif de ce travail est de contribuer à l’identification et à la compréhension des mécanismes à l'origine du renforcement des matrices thermoplastiques par des nanocharges. Cet aspect est abordé à travers l’étude des propriétés thermiques et mécaniques des nanocomposites formés d’une matrice Polyamide 12 (PA12) chargées par des nanoparticules d’argile organiquement modifiée. Plus précisément, nous avons analysé les effets de la fraction massique des charges et du vieillissement naturel sur les propriétés structurales, thermiques et mécaniques de ces nanocomposites. L’influence des conditions de mélangeage sur ces propriétés ont aussi été examinées. Nous avons particulièrement mis l’accent sur l’identification des liens qui existent entre les propriétés macroscopiques et la structure des nanocomposites. Nous avons aussi fait une étude comparative des propriétés viscoélastiques de ces matériaux à l'état fondu et à l'état solide, ce qui représente une des originalités forte de ce travail.

Nanocomposites are interestingly growing since their development in the 1990s by Toyota Company. Therefore, improving the properties of such materials is a major issue from fundamental and industrial point of view. This improvement can pass through a relevant choice of reinforcing loads added to the matrix particularly regarding the type, geometry, the proportion, and the treatment of these fillers. The processing parameters of the mixture play also a key role. The objective of this work is to contribute to the identification and understanding of the mechanisms at the origin of the reinforcing thermoplastic matrices by nanofillers. This aspect presented through the study of the thermal and mechanical properties of nanocomposites formed by a polyamide 12 matrix (PA12) filled with organically modified clay nanoparticles. More specifically, we analysed the effects of the filler mass fraction and environmental aging on structural, thermal and mechanical properties of these nanocomposites. The mixing conditions on these properties were also examined. A particular attention has been paid to the study of relationships between the macroscopic properties and the structure of nanocomposites. Viscoelastic properties of these materials in both melt and solid states were compared, which represents one of the originalities of this work.

Advisors/Committee Members: Aït Hocine, Nourredine (thesis director), Médéric, Pascal (thesis director).

Subjects/Keywords: Nanocomposites; Polyamide 12; Cloisite® 30B; Propriétés physiques; Propriétés mécaniques; DMTA; Nanocomposites; Polyamide 12; Cloisite® 30B; Physical properties; Mechanical properties; DMTA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Aldroe, H. (2014). Analyse des propriétés physiques et mécaniques des nanocomposites polyamide 12 / cloisite® 30B en lien avec leurs nanostructures : Analysis of the physical and mechanical properties of nanocomposites polyamide 12 / Cloisite® 30B and their relations with structure. (Doctoral Dissertation). Université François-Rabelais de Tours. Retrieved from http://www.theses.fr/2014TOUR4034

Chicago Manual of Style (16^th Edition):

Aldroe, Hanaya. “Analyse des propriétés physiques et mécaniques des nanocomposites polyamide 12 / cloisite® 30B en lien avec leurs nanostructures : Analysis of the physical and mechanical properties of nanocomposites polyamide 12 / Cloisite® 30B and their relations with structure.” 2014. Doctoral Dissertation, Université François-Rabelais de Tours. Accessed January 26, 2021. http://www.theses.fr/2014TOUR4034.

MLA Handbook (7^th Edition):

Aldroe, Hanaya. “Analyse des propriétés physiques et mécaniques des nanocomposites polyamide 12 / cloisite® 30B en lien avec leurs nanostructures : Analysis of the physical and mechanical properties of nanocomposites polyamide 12 / Cloisite® 30B and their relations with structure.” 2014. Web. 26 Jan 2021.

Vancouver:

Aldroe H. Analyse des propriétés physiques et mécaniques des nanocomposites polyamide 12 / cloisite® 30B en lien avec leurs nanostructures : Analysis of the physical and mechanical properties of nanocomposites polyamide 12 / Cloisite® 30B and their relations with structure. [Internet] [Doctoral dissertation]. Université François-Rabelais de Tours; 2014. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2014TOUR4034.

Council of Science Editors:

Aldroe H. Analyse des propriétés physiques et mécaniques des nanocomposites polyamide 12 / cloisite® 30B en lien avec leurs nanostructures : Analysis of the physical and mechanical properties of nanocomposites polyamide 12 / Cloisite® 30B and their relations with structure. [Doctoral Dissertation]. Université François-Rabelais de Tours; 2014. Available from: http://www.theses.fr/2014TOUR4034

Universidade do Rio Grande do Sul

15. Cechin, Gabriela. Análise de fatores que exercem influência na argamassa e no processo de projeção em revestimento de paredes.

Degree: 2017, Universidade do Rio Grande do Sul

URL: http://hdl.handle.net/10183/170970

► A argamassa de revestimento é um material largamente utilizado na construção civil. Após a década de 90, as construtoras necessitaram introduzir inovação no processo construtivo,… (more)

▼ A argamassa de revestimento é um material largamente utilizado na construção civil. Após a década de 90, as construtoras necessitaram introduzir inovação no processo construtivo, como um diferencial de mercado, a fim de aumentar a produtividade e qualidade, juntamente à redução do custo final. Em consequência disso, ao longo do tempo, houve a evolução do subsistema de revestimento, apresentando como maior mudança a substituição da aplicação manual por projeção mecânica. Acredita-se que, devido ao fato desta tecnologia propiciar a redução da interferência da mão de obra e possibilitar o fluxo contínuo durante a execução, permite atingir maior produtividade, qualidade e redução de perdas excessivas. Porém, verifica-se elevada incerteza e variabilidade na produção e aplicação da argamassa em canteiros de obras com a inexistência de controle das variáveis envolvidas ao processo, juntamente à carência de normativas e recomendações para projeção mecânica. Além disso, a falta de controle tecnológico e carência de conhecimento técnico, com elevado grau de empirismo nas etapas do processo resultam, muitas vezes, no desencadeamento de manifestações patológicas e perda de desempenho do revestimento. Sendo assim, buscando-se um melhor entendimento das variáveis existentes no sistema e a influência de sistemas distintos para projeção de argamassas, o principal objetivo desta pesquisa consiste em verificar a influência de variáveis com baixo ou inexistente controle no processo de produção da argamassa em relação às propriedades, no estado fresco e endurecido. Para que seja possível atingir esse objetivo a pesquisa foi dividida em duas etapas: a etapa 1, em campo e em laboratório, e a etapa 2, em laboratório. Na etapa 1, em campo, buscou-se o conhecimento e caracterização das edificações, bem como peculiaridades e práticas executivas adotadas em canteiros de obras. Os resultados desta etapa mostraram a variabilidade na produção e aplicação do revestimento, principalmente relacionado à quantidade de água adicionada e sentido de aplicação. Em relação à etapa 1, em laboratório, foram coletadas e transportadas as argamassas produzidas e utilizadas em canteiros de obra desta etapa, em campo. Foram realizados ensaios de caracterização, no estado fresco e endurecido, a fim de observar a influência da mistura (sistema) e do aumento da vazão. Através deste estudo, verifica-se que distintos sistemas apresentam diferença estatística significativa em algumas propriedades no estado fresco, tais como índice de consistência aos 50 minutos e retenção de água, e endurecido, através do coeficiente de capilaridade e resistência à tração na flexão, da argamassa. Além disso, pode-se afirmar que com o incremento da quantidade de água, apenas o teor de ar incorporado decresce, sendo as demais propriedades diretamente proporcionais ao aumento da vazão. Quanto à etapa 2, em laboratório, foram avaliados três fatores controláveis (vazão, sentido de aplicação e altura do substrato) em relação à resistência de aderência à tração e permeabilidade. Pode-se… Advisors/Committee Members: Masuero, Angela Borges.

Subjects/Keywords: Argamassa de revestimento; Shotcrete; Permeability; Processo de produção; Bond; Shotcrete systems; Rheological properties; Physical and mechanical properties; Rendering mortar

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cechin, G. (2017). Análise de fatores que exercem influência na argamassa e no processo de projeção em revestimento de paredes. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/170970

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cechin, Gabriela. “Análise de fatores que exercem influência na argamassa e no processo de projeção em revestimento de paredes.” 2017. Thesis, Universidade do Rio Grande do Sul. Accessed January 26, 2021. http://hdl.handle.net/10183/170970.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cechin, Gabriela. “Análise de fatores que exercem influência na argamassa e no processo de projeção em revestimento de paredes.” 2017. Web. 26 Jan 2021.

Vancouver:

Cechin G. Análise de fatores que exercem influência na argamassa e no processo de projeção em revestimento de paredes. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10183/170970.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cechin G. Análise de fatores que exercem influência na argamassa e no processo de projeção em revestimento de paredes. [Thesis]. Universidade do Rio Grande do Sul; 2017. Available from: http://hdl.handle.net/10183/170970

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cranfield University

16. Ruiz Trejo, Citlalli Elizabeth. Feasability study on maize husk as resource for a novel composite material.

Degree: 2018, Cranfield University

URL: http://dspace.lib.cranfield.ac.uk/handle/1826/14905

► Over the past decades, a dramatic increment on the production of maize husk (MH) in Mexico has been observed. Encouraging the study of this copious… (more)

▼ Over the past decades, a dramatic increment on the production of maize husk (MH) in Mexico has been observed. Encouraging the study of this copious material as an alternative for the manufacture of composite materials, thereby enabling the use of MH. Offering advantages such as availability, renewability and more importantly the possibility to reduce local pollution levels without compromising the environmental integrity. The purpose of this research was to develop a maize husk-based composite (MHC) at a lab scale through a transdisciplinary systemic design approach (SDA). The SDA framework was developed from a designer point of view to confront the concerns of MH overproduction, including social, environmental, technical and economic implications. The investigated fibres were obtained from two harvesting methods: manual (MASH) and mechanical (ASPROS). Both MHF’s performance was lower than other natural fibres. ASPROS fibres showed a steadier mechanical performance with a cross-section area of 0.14 mm², an ultimate tensile strength of 45.75 MPa, a 7.65 % of elongation and Young’s modulus of 1.95 MPa. Nineteen different MHC blends were manufactured, at a concentration of 70/30 MH/binder. Four MH sizes with three binding systems were tested; the sizes were (1) whole husk, (2) chopped, (3) milled and (4) 10 % NaOH alkalinised fibres. The binding systems included: (A) a board made rearranging MH’s natural components through thermal fusion, (B) MH mixed with lignin for the production of non-resin MHC boards, and (C) MH blended with a super SAP® CPM epoxy resin (SSE). The sizereduction (milled and alkali) improved MHF’ surface interfacial bonding with SSE resin, however, only alkali treated presented enhanced tensile properties. Overall, the M30 boards met the properties of general purpose fibreboards for use under humid conditions (BS EN622-5:2009). The AK30 and M20 boards properties remained within the general-purpose fibreboards for use in dry conditions (BS EN622-5:2009).

Subjects/Keywords: Agro-waste; maize husk; non-wood fibreboard; mechanical properties; physical properties; natural fibres; bio-based material; system design; sustainable innovation

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ruiz Trejo, C. E. (2018). Feasability study on maize husk as resource for a novel composite material. (Thesis). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/14905

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ruiz Trejo, Citlalli Elizabeth. “Feasability study on maize husk as resource for a novel composite material.” 2018. Thesis, Cranfield University. Accessed January 26, 2021. http://dspace.lib.cranfield.ac.uk/handle/1826/14905.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ruiz Trejo, Citlalli Elizabeth. “Feasability study on maize husk as resource for a novel composite material.” 2018. Web. 26 Jan 2021.

Vancouver:

Ruiz Trejo CE. Feasability study on maize husk as resource for a novel composite material. [Internet] [Thesis]. Cranfield University; 2018. [cited 2021 Jan 26]. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/14905.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ruiz Trejo CE. Feasability study on maize husk as resource for a novel composite material. [Thesis]. Cranfield University; 2018. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/14905

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

17. Štěpánek, Jakub. Diagnostické metody pro hodnocení stavu dřevěných konstrukcí: Diagnostic methods for the evaluation of the state of timber structures.

Degree: 2020, Brno University of Technology

URL: http://hdl.handle.net/11012/42549

► This thesis is dealing with diagnostic methods and methodics of research of timber constructions. Theoretical part is focusing on timber as material for constructions, it's… (more)

Subjects/Keywords: Dřevo; diagnostické metody; metodika průzkumu; ultrazvuk; mechanické vlastnosti; fyzikální vlastnosti; Timber; diagnostic methods; methodics of research; ultrasound; mechanical properties; physical properties

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Štěpánek, J. (2020). Diagnostické metody pro hodnocení stavu dřevěných konstrukcí: Diagnostic methods for the evaluation of the state of timber structures. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/42549

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Štěpánek, Jakub. “Diagnostické metody pro hodnocení stavu dřevěných konstrukcí: Diagnostic methods for the evaluation of the state of timber structures.” 2020. Thesis, Brno University of Technology. Accessed January 26, 2021. http://hdl.handle.net/11012/42549.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Štěpánek, Jakub. “Diagnostické metody pro hodnocení stavu dřevěných konstrukcí: Diagnostic methods for the evaluation of the state of timber structures.” 2020. Web. 26 Jan 2021.

Vancouver:

Štěpánek J. Diagnostické metody pro hodnocení stavu dřevěných konstrukcí: Diagnostic methods for the evaluation of the state of timber structures. [Internet] [Thesis]. Brno University of Technology; 2020. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/11012/42549.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Štěpánek J. Diagnostické metody pro hodnocení stavu dřevěných konstrukcí: Diagnostic methods for the evaluation of the state of timber structures. [Thesis]. Brno University of Technology; 2020. Available from: http://hdl.handle.net/11012/42549

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Addis Ababa University

18. Gebrekiros, Araya. Investigating the Potential of Aloe and Sisal Stem Fiber Blends for Particleboard Production .

Degree: 2019, Addis Ababa University

URL: http://etd.aau.edu.et/handle/123456789/20987

► Utilization of forest wood raw materials for particle board production has resulted in deforestation, loss of habitat for millions of species, climate change and raw… (more)

▼ Utilization of forest wood raw materials for particle board production has resulted in deforestation, loss of habitat for millions of species, climate change and raw material competition. Therefore, the use of non woody ligno-cellulosic raw materials is a good choice for particle board production. In this study aloe and sisal stem fibers were used as a blend and mixed with urea-formaldehyde (UF) resin for particle board production. First the aloe and sisal stems were collected form Adigrat and sun dried. The dried stems were then crushed into 3mm to 6mm in size. The particles were further reduced in size by grinding (0.5-2.5mm) and classified into different classes, i.e. very fine (250µm-475µm for both aloe and sisal fibers), fine (0.5-1.4 mm for aloe and 0.71-1.4mm for sisal fibers) and coarse (1.4-2.0 mm for aloe and 1.4-2.5 mm for sisal fibers), based on the requirement for production and analysis and stored on different containers until needed. The fibers were then analyzed for their moisture, ash, extractive, hemicellulose, lignin and cellulose content. FTIR analysis was also performed for identification of the functional groups present in the aloe and sisal stem fibers. After analysis of raw materials, three layered particleboards were produced using 22cm by 22 cm mould using coarse particles (60%) as core layers and fine particles (40%) as surface layers. Design expert 11 software was used for design of the experiments and statistical analysis of the results.17 different boards were produced by varying the aloe to sisal ratio (30-60%), resin loading rate (10-15%) and pressing pressure(150-200 bar) at pressing temperature of 155 C and press time of 14 minutes. The physical (moisture content, water absorption and thickness swelling) and mechanical (Modulus of rupture (MOR), Modulus of elasticity (MOE) and Internal bond (IB)) properties of the boards were investigated and compared with the Ethiopian standards for particle board. The results of the mechanical properties test showed that the particles boards have an average values of 11.267 MPa MOR,1686.34 MPa MOE and 0.417 MPa IB. The analysis of physical properties also showed that the particle boards have average values of 76.95% water absorption and 62% thickness swelling after 2 and 24hrs of immersion in water bath. The maximum results for MOR, MOE and IB were 12.42MPa, 1830.13MPa and 0.505Mpa, respectively. These values were observed at 45% of aloe to sisal ratio, 12.5% of resin loading and 175 bar pressing pressure. The minimum values for WA and TS were 47.15% and 61.9% ,respectively. These values were observed at 45% of aloe to sisal ratio, 15 % of resin loading and 200 bar pressing pressure. The final results of mechanical properties were compared with the Ethiopian standards for particle boards and they were found satisfactory for general purpose use. Advisors/Committee Members: Sintayehu, Nibret (PhD) (advisor).

Subjects/Keywords: Particle board; Ligno-cellulosic materials; Urea Formaldehyde resin; Mechanical properties; Physical Properties; Aloe fiber; Sisal Fiber

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gebrekiros, A. (2019). Investigating the Potential of Aloe and Sisal Stem Fiber Blends for Particleboard Production . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/handle/123456789/20987

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gebrekiros, Araya. “Investigating the Potential of Aloe and Sisal Stem Fiber Blends for Particleboard Production .” 2019. Thesis, Addis Ababa University. Accessed January 26, 2021. http://etd.aau.edu.et/handle/123456789/20987.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gebrekiros, Araya. “Investigating the Potential of Aloe and Sisal Stem Fiber Blends for Particleboard Production .” 2019. Web. 26 Jan 2021.

Vancouver:

Gebrekiros A. Investigating the Potential of Aloe and Sisal Stem Fiber Blends for Particleboard Production . [Internet] [Thesis]. Addis Ababa University; 2019. [cited 2021 Jan 26]. Available from: http://etd.aau.edu.et/handle/123456789/20987.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gebrekiros A. Investigating the Potential of Aloe and Sisal Stem Fiber Blends for Particleboard Production . [Thesis]. Addis Ababa University; 2019. Available from: http://etd.aau.edu.et/handle/123456789/20987

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Loughborough University

19. Sun, Ruting (Michelle). Characterization of the acoustic properties of cementitious materials.

Degree: PhD, 2017, Loughborough University

URL: http://hdl.handle.net/2134/27308

► The primary aim of this research was to investigate the fundamental acoustic properties of several cementitious materials, the influence of mix design parameters/constituents, and finally… (more)

Subjects/Keywords: 620.1; Cementitious materials; Fly ash; Mortar; Acoustic properties; Physical/mechanical properties; Least square method; Mathematical modelling

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sun, R. (. (2017). Characterization of the acoustic properties of cementitious materials. (Doctoral Dissertation). Loughborough University. Retrieved from http://hdl.handle.net/2134/27308

Chicago Manual of Style (16^th Edition):

Sun, Ruting (Michelle). “Characterization of the acoustic properties of cementitious materials.” 2017. Doctoral Dissertation, Loughborough University. Accessed January 26, 2021. http://hdl.handle.net/2134/27308.

MLA Handbook (7^th Edition):

Sun, Ruting (Michelle). “Characterization of the acoustic properties of cementitious materials.” 2017. Web. 26 Jan 2021.

Vancouver:

Sun R(. Characterization of the acoustic properties of cementitious materials. [Internet] [Doctoral dissertation]. Loughborough University; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2134/27308.

Council of Science Editors:

Sun R(. Characterization of the acoustic properties of cementitious materials. [Doctoral Dissertation]. Loughborough University; 2017. Available from: http://hdl.handle.net/2134/27308

Loughborough University

20. Trabelsi, Amira Ben Gouider. Outstanding properties of epitaxial graphene grown from silicon carbide substrate.

Degree: PhD, 2018, Loughborough University

URL: https://doi.org/10.26174/thesis.lboro.8132039.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785203

► In this thesis a study of outstanding properties of epitaxial graphene on SiC were carried out involving Raman spectroscopy, AFM, UFM, XPS, Photoelectric effect and… (more)

▼ In this thesis a study of outstanding properties of epitaxial graphene on SiC were carried out involving Raman spectroscopy, AFM, UFM, XPS, Photoelectric effect and electrical resistivity. Epitaxial graphene was grown from a semi-insulating on-axis 6H (000-1) or 4H-SiC (000-1) substrate. Epitaxial growth is based on Si atoms sublimation from the SiC substrate bulk. We used the basics of epitaxial graphene growth; however small details were changed. This allowed the growth of various layers, new features and new properties. X-ray photoelectron spectroscopy XPS was used to identify the different components forming within the graphene substrate system. The graphene layer number is evidenced by XPS. Atoms percentages in the grown graphene layer were determined. Furthermore, the oxidation of the graphene layers was clearly distinguished. Atomic force microscopy AFM was carried out to study the topography response of the graphene sample. This distinguishes any morphological changes of the graphene layer. The size, orientation and regularity of the layers terraces were determined. For the first time, new features such as: island, bubbles and domes of graphene layers were identified. The nature of these features was determined using ultra force microscopy UFM . High-resolution micro-Raman (Jobin Yvon HR LabRAM) was employed to illustrate all the revealed properties. Nonetheless, it illustrates the doping, defects, disorder, number of layers and phonon-plasmon coupling of epitaxial graphene. These properties were carefully demonstrated based on local Raman mapping. The findings of these investigations indicate the formation of various types of epitaxial graphene layers. These latest could have various forms with new electrical properties. This was illustrated using a comparative study to mechanical properties of epitaxial graphene island. In fact, new charge distribution was found across these features. These findings also differs from other electrical properties found in flat graphene layers. These latest shows electroneutrality of charge distribution between graphene SiC substrate. Here, Phonons- plasmons coupling in epitaxial graphene SiC substrate system were illustrated. On other hand, epitaxial graphene properties were not limited to the graphene layers flatness. In fact, new photoresponse of epitaxial graphene under violet light was revealed. Here, photo resistance increase during to epitaxial graphene morphology.

Subjects/Keywords: 530; Physical Sciences not elsewhere classified; Epitaxial graphene; Electrical properties; Mechanical properties; Raman; XPS; AFM; UFM; Graphene

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Trabelsi, A. B. G. (2018). Outstanding properties of epitaxial graphene grown from silicon carbide substrate. (Doctoral Dissertation). Loughborough University. Retrieved from https://doi.org/10.26174/thesis.lboro.8132039.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785203

Chicago Manual of Style (16^th Edition):

Trabelsi, Amira Ben Gouider. “Outstanding properties of epitaxial graphene grown from silicon carbide substrate.” 2018. Doctoral Dissertation, Loughborough University. Accessed January 26, 2021. https://doi.org/10.26174/thesis.lboro.8132039.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785203.

MLA Handbook (7^th Edition):

Trabelsi, Amira Ben Gouider. “Outstanding properties of epitaxial graphene grown from silicon carbide substrate.” 2018. Web. 26 Jan 2021.

Vancouver:

Trabelsi ABG. Outstanding properties of epitaxial graphene grown from silicon carbide substrate. [Internet] [Doctoral dissertation]. Loughborough University; 2018. [cited 2021 Jan 26]. Available from: https://doi.org/10.26174/thesis.lboro.8132039.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785203.

Council of Science Editors:

Trabelsi ABG. Outstanding properties of epitaxial graphene grown from silicon carbide substrate. [Doctoral Dissertation]. Loughborough University; 2018. Available from: https://doi.org/10.26174/thesis.lboro.8132039.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785203

UCLA

21. Zhu, Huanqi. Biophysical investigation of 2D embryonic stem cell derived cardiomyocytes.

Degree: Chemistry, 2015, UCLA

URL: http://www.escholarship.org/uc/item/5r28h65w

► Human embryonic stem cell derived cardiomyocytes (hESC-CMs) can be potential used to in a stem cell-based regenerative therapy to cure heart related disease. The maturity… (more)

Subjects/Keywords: Physical chemistry; Atomic force microscope; Cancer cell; Cardiomyocytes; Mechanical properties; Microelectrode Array

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APA (6^th Edition):

Zhu, H. (2015). Biophysical investigation of 2D embryonic stem cell derived cardiomyocytes. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/5r28h65w

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zhu, Huanqi. “Biophysical investigation of 2D embryonic stem cell derived cardiomyocytes.” 2015. Thesis, UCLA. Accessed January 26, 2021. http://www.escholarship.org/uc/item/5r28h65w.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zhu, Huanqi. “Biophysical investigation of 2D embryonic stem cell derived cardiomyocytes.” 2015. Web. 26 Jan 2021.

Vancouver:

Zhu H. Biophysical investigation of 2D embryonic stem cell derived cardiomyocytes. [Internet] [Thesis]. UCLA; 2015. [cited 2021 Jan 26]. Available from: http://www.escholarship.org/uc/item/5r28h65w.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zhu H. Biophysical investigation of 2D embryonic stem cell derived cardiomyocytes. [Thesis]. UCLA; 2015. Available from: http://www.escholarship.org/uc/item/5r28h65w

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Mississippi State University

22. Hastings, William Chad. CRYOGENIC TEMPERATURE EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON, ARAMID, AND PBO FIBERS.

Degree: MS, Mechanical Engineering, 2008, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032008-203657/ ;

► This study examines the effects of cryogenic temperatures on the mechanical properties of carbon, aramid, and poly(p-phenylene-2, 6-benzobisoxazole) (PBO) fibers. Although the mechanical properties are… (more)

Subjects/Keywords: Testing/Evaluation; Mechanical/Physical Properties; Cryogenic

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APA (6^th Edition):

Hastings, W. C. (2008). CRYOGENIC TEMPERATURE EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON, ARAMID, AND PBO FIBERS. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032008-203657/ ;

Chicago Manual of Style (16^th Edition):

Hastings, William Chad. “CRYOGENIC TEMPERATURE EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON, ARAMID, AND PBO FIBERS.” 2008. Masters Thesis, Mississippi State University. Accessed January 26, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032008-203657/ ;.

MLA Handbook (7^th Edition):

Hastings, William Chad. “CRYOGENIC TEMPERATURE EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON, ARAMID, AND PBO FIBERS.” 2008. Web. 26 Jan 2021.

Vancouver:

Hastings WC. CRYOGENIC TEMPERATURE EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON, ARAMID, AND PBO FIBERS. [Internet] [Masters thesis]. Mississippi State University; 2008. [cited 2021 Jan 26]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032008-203657/ ;.

Council of Science Editors:

Hastings WC. CRYOGENIC TEMPERATURE EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON, ARAMID, AND PBO FIBERS. [Masters Thesis]. Mississippi State University; 2008. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032008-203657/ ;

Vilnius Gediminas Technical University

23. Kristinavičiūtė, Jolanta. Bitumo kiekio įtakos asfalto kokybės rodikliams ir bitumo savybių tyrimai.

Degree: Master, Civil Enginering, 2010, Vilnius Gediminas Technical University

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100628_092123-93187 ;

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Baigiamojo magistro darbo tikslas – ištirti Lietuvos automobilių keliams naudojamų bitumų savybes ir bitumo kiekio įtaką asfalto kokybės rodikliams. Naudojantis eksperimentinių dangų konstrukcijų bandomojo ruožo… (more)

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Baigiamojo magistro darbo tikslas – ištirti Lietuvos automobilių keliams naudojamų bitumų savybes ir bitumo kiekio įtaką asfalto kokybės rodikliams. Naudojantis eksperimentinių dangų konstrukcijų bandomojo ruožo tyrimų duomenimis, atlikta viršutiniojo asfalto sluoksnio kokybės rodiklių analizė. Atlikus šių duomenų analizę, nustatytas bitumo kiekio ir mišinio fizikinių – mechaninių rodiklių tarpusavio koreliacinis ryšys. Pagal VĮ „Problematikos“ laboratorijoje atliktus bitumų tyrimų duomenis, nustatyta bitumo savybių rodiklių sietis. Tyrimų medžiaga apdorota statistiniu paketu „Statistica“. Pateiktos sunormintos bitumo kiekio ir fizikinių – mechaninių rodiklių vertės, atliktas bitumų kokybės rodiklių vertinimas. Pateiktos išvados ir rekomendacijos.

The main aim of this Master work is to analyse quality parameters of asphalt pavement and quality indicators of bitumen use for Lithuanian Roads. Using the results of the research on experimental pavement structures the quality parameters of the top layer of asphalt was analyzed. The analysis of the data allowed the correlation between the bitumen content and asphalt mixture physical and mechanical indices to be determined. Using the results of the research on „Problematika“ laboratory allowed the correlation between bitumen properties parameters. The research material was processed by means of the statistical software package „Statistica“. Standartized bitumen content and asphalt mixture physical and mechanical indices, bitumen quality indicators were valued. The conclusions and recommendations are provided.

Advisors/Committee Members: Petkevičius, Kazys (Master’s thesis supervisor), Laurinavičius, Alfredas (Master’s thesis reviewer), Braga, Aivaras (Master’s thesis reviewer), Vaitkus, Audrius (Master’s thesis advisor), Žukienė, Regina (Master’s thesis advisor), Dimaitis, Mindaugas (Master’s degree committee chair), Laurinavičius, Alfredas (Master’s degree committee member), Braga, Aivaras (Master’s degree committee member), Petkevičius, Kazys (Master’s degree committee member), Sakalauskas, Kazys (Master’s degree committee member), Podagėlis, Igoris (Master’s degree committee member).

Subjects/Keywords: Bitumo savybės; Bitumo kiekis; Fizikiniai mechaniniai rodikliai; Bitumen properties; Bitumen content; Physical and mechanical indices

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APA (6^th Edition):

Kristinavičiūtė, J. (2010). Bitumo kiekio įtakos asfalto kokybės rodikliams ir bitumo savybių tyrimai. (Masters Thesis). Vilnius Gediminas Technical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100628_092123-93187 ;

Chicago Manual of Style (16^th Edition):

Kristinavičiūtė, Jolanta. “Bitumo kiekio įtakos asfalto kokybės rodikliams ir bitumo savybių tyrimai.” 2010. Masters Thesis, Vilnius Gediminas Technical University. Accessed January 26, 2021. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100628_092123-93187 ;.

MLA Handbook (7^th Edition):

Kristinavičiūtė, Jolanta. “Bitumo kiekio įtakos asfalto kokybės rodikliams ir bitumo savybių tyrimai.” 2010. Web. 26 Jan 2021.

Vancouver:

Kristinavičiūtė J. Bitumo kiekio įtakos asfalto kokybės rodikliams ir bitumo savybių tyrimai. [Internet] [Masters thesis]. Vilnius Gediminas Technical University; 2010. [cited 2021 Jan 26]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100628_092123-93187 ;.

Council of Science Editors:

Kristinavičiūtė J. Bitumo kiekio įtakos asfalto kokybės rodikliams ir bitumo savybių tyrimai. [Masters Thesis]. Vilnius Gediminas Technical University; 2010. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100628_092123-93187 ;

Univerzitet u Beogradu

24. Popović, Jasmina J. 1969-. Efekti nekih predtretmana na hemijski sastav juvenilnog i zrelog drveta poljskog jasena (Fraxinus angustifolia Vahl. ssp. Pannonica Soó & Simon) i mogućnosti primene tako modifikovanog drveta.

Degree: Šumarski fakultet, 2016, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:10235/bdef:Content/get

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Biotehničke nauke - Hemijsko-mehanička prerada drveta / Biotechnical sciences - Chemical and mechanical processing of wood

U oviru ove doktorske disertacije istražena je varijabilnost anatomskog… (more)

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Biotehničke nauke - Hemijsko-mehanička prerada drveta / Biotechnical sciences - Chemical and mechanical processing of wood

U oviru ove doktorske disertacije istražena je varijabilnost anatomskog i hemijskog sastava u zavisnosti od starosti i položaja na stablu, i uticaj hemijskih predtretmana na hemijski sastav juvenilnog (10 godina) i zrelog (72 godine) drveta poljskog jasena (Fraxinus angustifolia Vahl. ssp. Pannonica Soó & Simon) sa područja Morovića. U cilju ispitivanja dejstva predtretmana juvenilno i zrelo drvo poljskog jasena tretirano je 1 h na temperaturi od 100 °C vodom, i pri dodatku rastvora 0,06 g/g sirćetne kiseline i 0,03 g/g natrijum karbonata. Za anatomsku karakterizaciju primenjene su svetlosna i elektronska mikroskopija (SEM). TAPPI i ASTM metodama određen je sadržaj celuloze, Klasonovog i kiselorastvornog lignina, mineralnih materija i ekstraktivnih jedinjenja rastvorljivih u vreloj vodi i u smeši organskih rastvarača (toluol/etanol). Za utvrđivanje sadržaja glukoze, ksiloze i manoze u uzorcima drveta i ekstraktima iz tretmana primenjena je visoko efikasna tečna hromatografija (HPLC), a za analizu funkcionalnih grupa primenjena je infracrvena spektroskopija (FTIR). Elementarna analiza karakterističnih detalja uočenih u tkivu poljskog jasena obavljena je primenom SEM-EDS sistema. Primenom standardnih EN SRPS i DIN, kao i naučnih metoda ispitan je uticaj tretmana na sadržaj ravnotežne vlage, adhezivna svojstva, upijanje vode, zapreminsko bubrenje i toplotnu moć drveta poljskog jasena. U cilju istraživanja mogućnosti primene tretmanom modifikovanog drveta izrađene su eksperimentalne jednoslojne ploče iverice. EN SRPS standardi su primenjeni za ispitivanje fizičkih i mehaničkih svojstava izrađenih ploča. Ustanovljeno je da postoji varijabilnost dimenzija elemenata anatomske građe i hemijskog sastava poljskog jasena u zavisnosti od starosti i položaja na stablu. Svi tretmani su doveli do promena u hemijskom sastavu drveta, i to u većoj meri kod juvenilnog drveta. Tretman vodom izazvao najmanje promene, a tretman natrijum karbonatom najveće. U tretiranom drvetu poljskog jasena smanjen je sadržaj mineralnih materija za 16 - 80 %, ekstraktivnih materija rastvorljivih u vreloj vodi za 76 - 85 %, a sadržaj ekstraktivnih materija rastvorljivih u smeši toluol/etanol za 58 – 78 %. Sadržaj celuloze tretiranog drveta povećan je 3.6 - 8 %, a sadržaj lignina nije značajno promenjen. Sadržaja ksiloze povećan je posle tretmana vodom za oko 3.5 % kod zrelog i 9 % kod juvenilnog drveta, a smanjen posle ostalih tretmana. Tretman vodom i sirćetnom kiselinom doveli su do smanjenja, a tretman natrijum karbonatom do povećanja sadržaja ravnotežne vlage tretiranih uzoraka (90 %, 20 °C). Svi tretmani doveli su do intenzivnijeg upijanja vode i poboljšanja dimenzionalne stabilnosti za 14 - 24.6 %. Adhezivna svojstva značajno su poboljšana posle tretmana natrijum karbonatom. Ploče izrađene od tretiranog iverja imale su niže vrednosti sadržaja ravnotežne vlage u odnosu na kontrolne ploče (32, 65 i 90 %, 20 oC), uz pad…

Advisors/Committee Members: Điporović-Momčilović, Milanka, 1962-.

Subjects/Keywords: Narrow-leaved ash; chemical and anatomical characterization; chemical pre-treatments; particleboards; physical and mechanical properties

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Popović, J. J. 1. (2016). Efekti nekih predtretmana na hemijski sastav juvenilnog i zrelog drveta poljskog jasena (Fraxinus angustifolia Vahl. ssp. Pannonica Soó & Simon) i mogućnosti primene tako modifikovanog drveta. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:10235/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Popović, Jasmina J 1969-. “Efekti nekih predtretmana na hemijski sastav juvenilnog i zrelog drveta poljskog jasena (Fraxinus angustifolia Vahl. ssp. Pannonica Soó & Simon) i mogućnosti primene tako modifikovanog drveta.” 2016. Thesis, Univerzitet u Beogradu. Accessed January 26, 2021. https://fedorabg.bg.ac.rs/fedora/get/o:10235/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Popović, Jasmina J 1969-. “Efekti nekih predtretmana na hemijski sastav juvenilnog i zrelog drveta poljskog jasena (Fraxinus angustifolia Vahl. ssp. Pannonica Soó & Simon) i mogućnosti primene tako modifikovanog drveta.” 2016. Web. 26 Jan 2021.

Vancouver:

Popović JJ1. Efekti nekih predtretmana na hemijski sastav juvenilnog i zrelog drveta poljskog jasena (Fraxinus angustifolia Vahl. ssp. Pannonica Soó & Simon) i mogućnosti primene tako modifikovanog drveta. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2021 Jan 26]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:10235/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Popović JJ1. Efekti nekih predtretmana na hemijski sastav juvenilnog i zrelog drveta poljskog jasena (Fraxinus angustifolia Vahl. ssp. Pannonica Soó & Simon) i mogućnosti primene tako modifikovanog drveta. [Thesis]. Univerzitet u Beogradu; 2016. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:10235/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Oxford

25. Pedrazzini, Stella. Characterisation and mechanical properties of bulk nanostrictured Al-based composites for high temperature applications.

Degree: PhD, 2014, University of Oxford

URL: http://ora.ox.ac.uk/objects/uuid:4b8b77b7-a522-403a-b1a3-73d3399486a4 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658446

► Rapidly solidified nanoquasicrystalline Al₉₃Fe₃Cr₂Ti₂ at% alloy has previously shown outstanding mechanical performance and microstructural stability up to elevated temperatures. Despite this, no in-depth study had… (more)

▼ Rapidly solidified nanoquasicrystalline Al₉₃Fe₃Cr₂Ti₂ at% alloy has previously shown outstanding mechanical performance and microstructural stability up to elevated temperatures. Despite this, no in-depth study had previously been performed assessing the active strengthening mechanisms, the long term microstructural stability and the effect of plastic deformation at elevated temperature to simulate the production methods utilised for engineering applications. The current project analysed eight bars consisting of a nanoquasicrystalline Al₉₃Fe₃Cr₂Ti₂ at% alloy matrix with varying amounts of pure Al fibres, produced through gas atomisation and warm extrusion. Microstructural characterisation and thermal analysis of the as-atomized powder was carried out to assess whether microstructural changed were likely to occur at the extrusion temperature. A microstructure made primarily of nanometre-sized icosahedral particles in an FCC-Al matrix was observed through a combination of SEM, TEM (and CBDP), EDX, XRD. Thermal analysis of the powders performed by DSC showed that no change was expected to occur at the extrusion temperature. Five bars were extruded during the course of this project: one bar of pure Al-Fe-Cr-Ti alloy, two composite bars with 10 vol% added pure Al and two bars with 20 vol% added Al. Three more bars were received from a previous project and analysed. Warm extrusion caused the powder particles to become well bonded and elongated in the extrusion direction introducing a preferred orientation in the FCC-Al grains. A bimodal distribution of grain size was observed after extrusion. Several low angle (5-15 °) grain boundaries were also identified by EBSD along the extrusion direction. No obvious change in size or shape was observed by TEM in the icosahedral phase (a bimodal distribution of hard, incoherent precipitates was observed after extrusion), or any change in the amount of solutes in solid solution in the Al matrix. Mechanical properties at room temperature were tested by Vickers microhardness, quasi-static tensile tests, dynamic tensile tests and dynamic compression tests. A theoretical model correlating the microstructures observed with the various active strengthening mechanisms was applied in order to predict an estimate of the yield strength of the material produced. It was found that the strength of the Al₉₃Fe₃Cr₂Ti₂ alloy came primarily from a combination of the effect of the hard, incoherent nanoparticles, the small grain size and work hardening. The fibre addition to this alloy caused a linear decrease in mechanical strength with increasing vol% pure Al. This work represents the first quantitative estimate of which strengthening mechanisms are active and how much they influence the mechanical strength of Al₉₃Fe₃Cr₂Ti₂ alloy and composites. An understanding of the yield strength is essential as engineering components…

Subjects/Keywords: 620.1; Physical metallurgy; Materials Sciences; Processing of advanced materials; Quasicrystals; Composite materials; Mechanical Properties

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pedrazzini, S. (2014). Characterisation and mechanical properties of bulk nanostrictured Al-based composites for high temperature applications. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:4b8b77b7-a522-403a-b1a3-73d3399486a4 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658446

Chicago Manual of Style (16^th Edition):

Pedrazzini, Stella. “Characterisation and mechanical properties of bulk nanostrictured Al-based composites for high temperature applications.” 2014. Doctoral Dissertation, University of Oxford. Accessed January 26, 2021. http://ora.ox.ac.uk/objects/uuid:4b8b77b7-a522-403a-b1a3-73d3399486a4 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658446.

MLA Handbook (7^th Edition):

Pedrazzini, Stella. “Characterisation and mechanical properties of bulk nanostrictured Al-based composites for high temperature applications.” 2014. Web. 26 Jan 2021.

Vancouver:

Pedrazzini S. Characterisation and mechanical properties of bulk nanostrictured Al-based composites for high temperature applications. [Internet] [Doctoral dissertation]. University of Oxford; 2014. [cited 2021 Jan 26]. Available from: http://ora.ox.ac.uk/objects/uuid:4b8b77b7-a522-403a-b1a3-73d3399486a4 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658446.

Council of Science Editors:

Pedrazzini S. Characterisation and mechanical properties of bulk nanostrictured Al-based composites for high temperature applications. [Doctoral Dissertation]. University of Oxford; 2014. Available from: http://ora.ox.ac.uk/objects/uuid:4b8b77b7-a522-403a-b1a3-73d3399486a4 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658446

KTH

26. Tokarski, Tomasz. Nanomechanical properties of nanocomposite polymer layer.

Degree: Biotechnology and Health (CBH), 2019, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261161

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Interphase phenomenon gains more and more interest throughout the research community. An interphase is formed between a filler particle and a polymeric matrix, and… (more)

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Interphase phenomenon gains more and more interest throughout the research community. An interphase is formed between a filler particle and a polymeric matrix, and it may constitute almost the entire volume of a nanocomposite. If the interphase have favorable mechanical properties it will thus result in a nanocomposite with such properties. Therefore, understanding the principles of its formation and properties are crucial in order to design advanced nanocomposites. This thesis focuses on PDMS-carboxylic acid modified latex nanoparticles (PDMS-CML) surface composites investigated by means of Atomic Force Microscopy (AFM). A new sample preparation method was designed and utilized together with the Gel Trapping Technique (GTT). Quantitative Imaging Mode and Contact Mode were utilized in the AFM studies. Topography and nanomechanical properties were investigated and compared for pure PDMS and PDMS containing the nanoparticles. Further, Contact Mode was used to investigate nanoscale wear of the samples in order to elucidate the interactions strength between the nanoparticles and the matrix.

Egenskaper hos interfaser är ett område som röner allt större intresse hos forskarna inom materialområdet. En interfas bildas mellan en fillerpartikel och en polymermatris, och den kan utgöra den största volymen i en nanokomposit. Ifall interfasen har fördelaktiga mekaniska egenskaper så resulterar det alltså i att nanokompositen också får det. Det är därför viktigt att först principerna för hur interfasen bildas och får sina egenskaper om man vill framställa avancerade nanokompositer. I det här avhandlingsarbetet lades fokus på PDMS och karboxylsyrefunktionaliserade latex nanopartiklar som bildade en nanokomposit yta, vilken studerades med atomkraftsmikroskopi (AFM). En ny framställningsmetod togs fram och utnyttjades tillsammans med den så kallade ”Gel Trapping” tekniken (GTT). Quantitative Imaging och kontakt mode utnyttjades vid AFM studierna. Topografin och de nanomekaniska egenskaperna studerades för ren PDMS och PDMS blandat med nanopartiklarna. Nötning på nanometernivå studerades också, och dä med AFM i kontakt mode.

Subjects/Keywords: Nanocomposite; nanowear; nano mechanical properties; gel trapping; atomic force microscopy; Physical Chemistry; Fysikalisk kemi

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tokarski, T. (2019). Nanomechanical properties of nanocomposite polymer layer. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261161

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tokarski, Tomasz. “Nanomechanical properties of nanocomposite polymer layer.” 2019. Thesis, KTH. Accessed January 26, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261161.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tokarski, Tomasz. “Nanomechanical properties of nanocomposite polymer layer.” 2019. Web. 26 Jan 2021.

Vancouver:

Tokarski T. Nanomechanical properties of nanocomposite polymer layer. [Internet] [Thesis]. KTH; 2019. [cited 2021 Jan 26]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261161.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tokarski T. Nanomechanical properties of nanocomposite polymer layer. [Thesis]. KTH; 2019. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261161

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New Mexico

27. Pan, Jielin. A study of Asphalt Aging Behavior Using Molecular Dynamics Simulations.

Degree: Civil Engineering, 2016, University of New Mexico

URL: http://hdl.handle.net/1928/31738

► Oxidative aging is a major issue in asphalt pavements that leads to hardening of the asphalt, which further contributes significantly to asphalt pavement embrittlement and… (more)

▼ Oxidative aging is a major issue in asphalt pavements that leads to hardening of the asphalt, which further contributes significantly to asphalt pavement embrittlement and eventually results in excessive pavement cracking. In addition, the performance of asphalt binder is also highly related to its service conditions which involve climatic conditions and traffic conditions, such as temperature, moisture and traffic loads. Generally, the mechanical properties of asphalt before and after oxidative aging can be tested in the laboratory; however, the fundamental material science of asphalt before and after oxidative aging is difficult to be investigated in the laboratory regarding chemical composition and property change due to the difficulties of studying the molecular structures and their dynamic behavior in asphalt. Therefore, Molecular Dynamics (MD) simulation method is used in this study to understand how the chemical composition and property changes of asphalt after oxidative aging affect the physical, thermodynamic, rheological and mechanical performance of the asphalt, and how the oxidized asphalt acts under different conditions, such as loading, temperature, and moisture, compared to the unoxidized asphalt. MD simulation is a computational method used to simulate the physical movements of atoms and molecules depending on time and force field chosen under different conditions, such as temperature, pressure, and loading. Asphalt models before and after oxidative aging are developed for MD simulations in this study under different temperatures, loading and moisture contents. Simulation results show that the oxidized functional groups in asphalt molecules increase the strength of intermolecular bonds of asphalt, which further contributes to the hardening of the oxidized asphalt. Specifically, the internal energy changes, especially for higher magnitude of intermolecular and lower kinetic energies, are responsible for the hardening of oxidized asphalt, and the higher potential energies and for oxidized asphalt further proves that oxidation increases the polarity of molecules in asphalt and forms strongly interacting components. The internal property change is consistent with the external physical and rheological property change after oxidation, which is revealed by the increase of density, bulk modulus and viscosity. Considering the mechanical property of asphalt using MD simulations, both the unoxidized and oxidized asphalts deform more and fail faster with an increase in both compressive and tensile stress rates, especially under tensile stresses. However, the oxidized asphalt is stiffer than the unoxidized asphalt, which shows slower and less deformation, further validating the hardening of asphalt after oxidation. Asphalt is significantly susceptible to temperature. Simulation results show that density, and zero shear viscosity of asphalt decrease with an increase in temperature. Isothermal compressibility and bulk modulus also change under different temperatures. Moreover, the density, bulk modulus (inverse of… Advisors/Committee Members: Tarefder, Rafiqul, Shen, Yu-Lin, Ng, Tang-Tat, Zhang, Guohui, Tarefder, Rafiqul.

Subjects/Keywords: Molecular Dynamics Simulation; Asphalt Oxidative Aging; Physical; Rheological and Mechanical Properties; Temperature and Mositure Impacts

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pan, J. (2016). A study of Asphalt Aging Behavior Using Molecular Dynamics Simulations. (Doctoral Dissertation). University of New Mexico. Retrieved from http://hdl.handle.net/1928/31738

Chicago Manual of Style (16^th Edition):

Pan, Jielin. “A study of Asphalt Aging Behavior Using Molecular Dynamics Simulations.” 2016. Doctoral Dissertation, University of New Mexico. Accessed January 26, 2021. http://hdl.handle.net/1928/31738.

MLA Handbook (7^th Edition):

Pan, Jielin. “A study of Asphalt Aging Behavior Using Molecular Dynamics Simulations.” 2016. Web. 26 Jan 2021.

Vancouver:

Pan J. A study of Asphalt Aging Behavior Using Molecular Dynamics Simulations. [Internet] [Doctoral dissertation]. University of New Mexico; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1928/31738.

Council of Science Editors:

Pan J. A study of Asphalt Aging Behavior Using Molecular Dynamics Simulations. [Doctoral Dissertation]. University of New Mexico; 2016. Available from: http://hdl.handle.net/1928/31738

Universidade Federal de Santa Maria

28. Luiz Eugênio Jacobs. PROPRIEDADES FÍSICAS, MECÂNICAS E HÍDRICAS DE UM ARGISSOLO SUBMETIDO AO PASTEJO DE OVINOS EM CAMPO NATIVO.

Degree: 2012, Universidade Federal de Santa Maria

URL: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=4783

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As pastagens naturais caracterizam importante fonte alimentar para a criação de bovinos e de ovinos. Essas, muitas vezes, são submetidas a regimes intensivos de pastejo,… (more)

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As pastagens naturais caracterizam importante fonte alimentar para a criação de bovinos e de ovinos. Essas, muitas vezes, são submetidas a regimes intensivos de pastejo, o que pode resultar na degradação física do solo. Estratégias sustentáveis à tríade solo-planta-animal devem ser consideradas para potencializar a recuperação e manutenção da qualidade física do solo em ambientes frágeis e, consequentemente, melhorar a eficiência dos sistemas produtivos. Hipotetiza-se que o sistema de pastoreio rotativo da pastagem nativa conjuntamente com a melhoria da fertilidade do solo contribui para atingir esse equilíbrio, além de potencializar a recuperação física do solo quando em estágio de degradação. O objetivo deste estudo foi avaliar o comportamento físico, mecânico e hídrico de um Argissolo submetido a diferentes sistemas de pastoreio de ovinos e manejo das pastagens em área de campo nativo. Os objetivos específicos foram (i) determinar a qualidade física do solo por meio de avaliações da densidade (Ds), macroporosidade, microporosidade e porosidade total (Pt) em diferentes camadas e diferentes épocas; (ii) avaliar as propriedades mecânicas do solo por meio da resistência do solo à penetração (RP) e de indicadores da capacidade de suporte e compressibilidade do solo; (iii) avaliar as propriedades hídricas do solo por meio da condutividade hidráulica saturada (Ksat) e retenção de água do solo e, (iv) determinar a relação entre as propriedades físicas do solo com as propriedades mecânicas e hídricas. O estudo foi conduzido em uma propriedade rural situada no município de Itaara/RS. O solo do local é um Argissolo, cuja análise granulométrica indicou classe textural argilosa até a profundidade de 0,15 m. A área do estudo, em campo nativo, vinha sendo utilizada para pastejo animal intensivo de bovinos. Os sistemas de pastoreio contínuo e rotativo foram conduzidos em campo nativo melhorado e não melhorado quimicamente. Foi realizado determinações da granulometria, Ds, Pt, macro, micro, RP, pressão de pré-consolidação, índice de compressão, Ksat e retenção de água do solo antes e após o ciclo de pastejo (época 1 e 2 respectivamente). Os resultados indicaram que após o ciclo de pastejo obteve-se, principalmente no tratamento de pastejo rotativo em campo melhorado (RM), não somente redução dos valores de Ds mas também da RP, além do aumento da macroporosidade do solo. O Índice de compressão apresentou maiores valores após o ciclo de pastejo em todos os tratamentos, principalmente no RM, o que indicou maior suscetibilidade do solo em sofrer compactação adicional independente dos diferentes sistemas de pastoreio dos ovinos e manejo das pastagens nativas, enquanto que a capacidade de suporte do solo não variou significativamente. Os diferentes sistemas de pastoreio dos ovinos não afetaram significativamente a condutividade hidráulica saturada do solo. A retenção de água do solo nos diferentes potenciais apresentou tendência de ser menor após o ciclo de pastejo, o que pode ser devido à menor microporosidade.

The natural pastures…

Advisors/Committee Members: Dalvan José Reinert, Luis Eduardo Akiyoshi Sanches Suzuki, Jean Paolo Gomes Minella.

Subjects/Keywords: recuperação física; propriedades físico-mecânico-hídricas; pastoreio rotativo; CIENCIA DO SOLO; rotational grazing; physical; mechanical and hydraulic properties; physical recovery

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jacobs, L. E. (2012). PROPRIEDADES FÍSICAS, MECÂNICAS E HÍDRICAS DE UM ARGISSOLO SUBMETIDO AO PASTEJO DE OVINOS EM CAMPO NATIVO. (Thesis). Universidade Federal de Santa Maria. Retrieved from http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=4783

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jacobs, Luiz Eugênio. “PROPRIEDADES FÍSICAS, MECÂNICAS E HÍDRICAS DE UM ARGISSOLO SUBMETIDO AO PASTEJO DE OVINOS EM CAMPO NATIVO.” 2012. Thesis, Universidade Federal de Santa Maria. Accessed January 26, 2021. http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=4783.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jacobs, Luiz Eugênio. “PROPRIEDADES FÍSICAS, MECÂNICAS E HÍDRICAS DE UM ARGISSOLO SUBMETIDO AO PASTEJO DE OVINOS EM CAMPO NATIVO.” 2012. Web. 26 Jan 2021.

Vancouver:

Jacobs LE. PROPRIEDADES FÍSICAS, MECÂNICAS E HÍDRICAS DE UM ARGISSOLO SUBMETIDO AO PASTEJO DE OVINOS EM CAMPO NATIVO. [Internet] [Thesis]. Universidade Federal de Santa Maria; 2012. [cited 2021 Jan 26]. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=4783.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jacobs LE. PROPRIEDADES FÍSICAS, MECÂNICAS E HÍDRICAS DE UM ARGISSOLO SUBMETIDO AO PASTEJO DE OVINOS EM CAMPO NATIVO. [Thesis]. Universidade Federal de Santa Maria; 2012. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=4783

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade de Brasília

29. Frederico de Souza. Propriedades mecânicas, físicas, biológicas e avaliação não-destrutiva de painéis de lâminas paralelas (lvl) com madeira de pinus oocarpa e p. kesiya.

Degree: 2009, Universidade de Brasília

URL: http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5047

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Painéis estruturais de lâminas paralelas ou laminated veneer lumber (LVL) são painéis estruturais onde as lâminas de madeira são coladas paralelamente entre si com adesivos… (more)

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Painéis estruturais de lâminas paralelas ou laminated veneer lumber (LVL) são painéis estruturais onde as lâminas de madeira são coladas paralelamente entre si com adesivos estruturais, usando-se altas temperaturas e pressões. Os LVLs são utilizados em substituição à madeira sólida para fins estruturais, principalmente em flanges de vigas de seção I. Confeccionaram-se quatro painéis LVLs sem prévia classificação das lâminas para cada espécie (Pinus oocarpa Schiede ex Schltdl - PO e Pinus kesiya Royle ex Gordon - PK, sorteando-se 22 lâminas de 2 mm de espessura, usando-se adesivo fenol-formaldeído à 190 g/m, à 150C por 45 minutos e 1,1 MPa de pressão específica. Avaliaram-se as seguintes propriedades de acordo com as normas específicas: na avaliação não-destrutiva AND (velocidade de propagação das ondas de tensão V0 e módulo de elasticidade dinâmico Emd), em flexão estática (módulo de elasticidade Em e módulo de ruptura fm), em compressão paralela às fibras (resistência máxima à compressão paralela fc,0), no cisalhamento paralelo e perpendicular à linha de cola (resistência máxima ao cisalhamento paralelo fv,0 e perpendicular fv,90), inchamento em espessura (IE), absorção de água (ABS) e taxa de não-retorno (TNRE), nos períodos de 2, 24 e 96 horas de imersão em água, perda de massa em podridão branca (PMPB), (Trametes versicolor) e podridão parda (PMPP) (Gloeophyllum trabeum). Os painéis LVLs de PO e PK não apresentaram delaminações ou bolhas. Os painéis de PK foram mais eficientes nas propriedades mecânicas: Em, Emd, V0, fm, fc,0; os de PO apresentaram menores ABS, IE e TNRE nos três períodos observados. A densidade aparente, o fv,0 e fv,90 foram iguais estatisticamente. A PMPB e PMPP foram estatisticamente iguais, sendo mais intensa na PMPP em ambos os LVLs. A predição das propriedades mecânicas por AND não foram eficientes em virtude da não pré-classificação das lâminas na confecção dos LVLs.

Laminated veneer lumber (LVL) is a structural board in which lumber veneers are glued together with structural adhesives at high temperatures and pressures. LVL are more commonly used to replace solid wood in I-beam flanges. This study aimed to evaluate the mechanical, physical and biological properties of LVL made from Pinus oocarpa Schiede ex Schltdl (PO) and Pinus kesiya Royle ex Gordon (PK) and to provide a nondestructive characterization thereof. Four PO and four PK LVL boards formed by 22 randomly selected 2-mm wide veneers were produced according to the following characteristics: phenol-formaldehyde (190g/m), hot-pressing at 150C for 45 minutes and 2.8 N/mm of specific pressure. Properties evaluated included: stress wave velocity (V0 ), dynamic modulus of elasticity (Emd), static bending modulus of elasticity (Em) and modulus of rupture (fm), parallel compression strength (fc,0), parallel shear strength (fgv,0) and perpendicular shear strength (fgv,90), thickness swelling (TS), water absorption (WA) and permanent thickness swelling (PTS) for 2, 24 and 96-hour of water immersion, weight loss by Trametes versicolor…

Advisors/Committee Members: Alexandre Monteiro de Carvalho, Geraldo Bortoletto Júnior, Ailton Teixeira do Vale, Cláudio Henrique Soares Del Menezzi, Alexandre Florian da Costa.

Subjects/Keywords: OUTROS; Físicas e Biológicas; Propriedades Mecânicas; Painéis de Lâminas Paralelas (LVL); Non-Destructive Evaluation (NDE); Physical Properties; Biological properties; Mechanical Properties; Laminated Veneer Lumber (LVL); Avaliação Não-Destrutiva (AND)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Souza, F. d. (2009). Propriedades mecânicas, físicas, biológicas e avaliação não-destrutiva de painéis de lâminas paralelas (lvl) com madeira de pinus oocarpa e p. kesiya. (Thesis). Universidade de Brasília. Retrieved from http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5047

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Souza, Frederico de. “Propriedades mecânicas, físicas, biológicas e avaliação não-destrutiva de painéis de lâminas paralelas (lvl) com madeira de pinus oocarpa e p. kesiya.” 2009. Thesis, Universidade de Brasília. Accessed January 26, 2021. http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5047.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Souza, Frederico de. “Propriedades mecânicas, físicas, biológicas e avaliação não-destrutiva de painéis de lâminas paralelas (lvl) com madeira de pinus oocarpa e p. kesiya.” 2009. Web. 26 Jan 2021.

Vancouver:

Souza Fd. Propriedades mecânicas, físicas, biológicas e avaliação não-destrutiva de painéis de lâminas paralelas (lvl) com madeira de pinus oocarpa e p. kesiya. [Internet] [Thesis]. Universidade de Brasília; 2009. [cited 2021 Jan 26]. Available from: http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5047.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Souza Fd. Propriedades mecânicas, físicas, biológicas e avaliação não-destrutiva de painéis de lâminas paralelas (lvl) com madeira de pinus oocarpa e p. kesiya. [Thesis]. Universidade de Brasília; 2009. Available from: http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5047

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Michigan State University

30. Watson, Elena O. Lower limb activity and mobility patterns in medieval Nubia : a biomechanical approach of femoral and tibial cross-sectional geometry from Mis Island.

Degree: 2018, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:19393

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Thesis M.S. Michigan State University. Forensic Science 2018

This study analyzed femoral and tibial cross-sectional properties in a medieval Nubian skeletal sample to explore patterns… (more)

Subjects/Keywords: Forensic anthropology – Nubia – Antiquities; Human remains (Archaeology) – Nubia; Leg – Movements – Sex differences; Femur – Mechanical properties; Tibia – Mechanical properties; Human remains (Archaeology); Forensic anthropology; Physical anthropology

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Watson, E. O. (2018). Lower limb activity and mobility patterns in medieval Nubia : a biomechanical approach of femoral and tibial cross-sectional geometry from Mis Island. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:19393

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Watson, Elena O. “Lower limb activity and mobility patterns in medieval Nubia : a biomechanical approach of femoral and tibial cross-sectional geometry from Mis Island.” 2018. Thesis, Michigan State University. Accessed January 26, 2021. http://etd.lib.msu.edu/islandora/object/etd:19393.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Watson, Elena O. “Lower limb activity and mobility patterns in medieval Nubia : a biomechanical approach of femoral and tibial cross-sectional geometry from Mis Island.” 2018. Web. 26 Jan 2021.

Vancouver:

Watson EO. Lower limb activity and mobility patterns in medieval Nubia : a biomechanical approach of femoral and tibial cross-sectional geometry from Mis Island. [Internet] [Thesis]. Michigan State University; 2018. [cited 2021 Jan 26]. Available from: http://etd.lib.msu.edu/islandora/object/etd:19393.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Watson EO. Lower limb activity and mobility patterns in medieval Nubia : a biomechanical approach of femoral and tibial cross-sectional geometry from Mis Island. [Thesis]. Michigan State University; 2018. Available from: http://etd.lib.msu.edu/islandora/object/etd:19393

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations