subject:(Grain size)

Oregon State University

1. Monkul, M. Murat. Influence of silt size and content on static liquefaction potential of sand.

Degree: PhD, Civil Engineering, 2010, Oregon State University

URL: http://hdl.handle.net/1957/16494

► Different specimen preparation methods such as moist tamping, dry funnel deposition, slurry deposition, dry air pluviation have been reported in the literature to investigate the… (more)

▼ Different specimen preparation methods such as moist tamping, dry funnel deposition, slurry deposition, dry air pluviation have been reported in the literature to investigate the undrained behavior of silty sands. Similarly, different means have been used to densify the soils prepared with such methods. However, the influence of the densification technique, utilized within a particular deposition method, on undrained behavior (e.g. change in initial peak deviator stress and instability angle) was not known. Therefore, a new densification technique is developed for the dry funnel deposition method, which avoids tamping, vibrating or mold tapping. This new method of densification is thought to create a much consistent soil fabric for different amounts of densification than other specimen densification techniques. The experimental results show that the change in undrained behavior with increasing density produced by densification is much less pronounced when compared to the other densification methods reported in the literature. Prior research efforts regarding the effect of non plastic silts on the liquefaction behavior of sands mainly focused on the influence of fines content, confining stress, and depositional techniques. However, there is no consensus in the literature regarding the influence of fines content on the undrained behavior of silty sands. Strain-controlled monotonic undrained triaxial compression tests were performed on a single base sand mixed with three different essentially nonplastic silts. First, silt size effects are investigated while other factors like fines content (20%), confining stress (30kPa) and deposition method (dry funnel deposition) were kept the same. The results show that silt size is indeed an important factor which influences the liquefaction potential of silty sands. Different comparison bases for undrained behavior such as the loosest possible density after deposition, intergranular void ratio, void ratio and relative density were also evaluated. It was observed that as the mean grain diameter ratio (D₅₀/d₅₀) of the sand grains (D₅₀) to silt grains (d₅₀) decreases, liquefaction potential for a silty sand increases. This tendency is attributed to more metastable contacts with increasing silt size. Finally, the influence of fines content on the static liquefaction potential of silty sand is investigated for different silt types. It was found that if the mean grain diameter ratio (D[subscript 50-sand]/d[subscript 50-silt]) is sufficiently small, the liquefaction potential of the sand increases steadily with increasing fines content for the studied range (0-20%). As mean grain diameter ratio (D[subscript 50-sand]/d[subscript 50-silt]) increases, the liquefaction potential of the sand first decreases then increases with fines content. For such cases, liquefaction potential of the silty sand might be less than the liquefaction potential of the clean sand. Differences in undrained behavior are explained based on the influence of mean grain diameter ratio (D[subscript… Advisors/Committee Members: Ashford, Scott A. (advisor), Esterhuizen, Jacob J. (committee member).

Subjects/Keywords: grain size; Silt – Mechanical properties

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APA (6^th Edition):

Monkul, M. M. (2010). Influence of silt size and content on static liquefaction potential of sand. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/16494

Chicago Manual of Style (16^th Edition):

Monkul, M Murat. “Influence of silt size and content on static liquefaction potential of sand.” 2010. Doctoral Dissertation, Oregon State University. Accessed December 10, 2019. http://hdl.handle.net/1957/16494.

MLA Handbook (7^th Edition):

Monkul, M Murat. “Influence of silt size and content on static liquefaction potential of sand.” 2010. Web. 10 Dec 2019.

Vancouver:

Monkul MM. Influence of silt size and content on static liquefaction potential of sand. [Internet] [Doctoral dissertation]. Oregon State University; 2010. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/1957/16494.

Council of Science Editors:

Monkul MM. Influence of silt size and content on static liquefaction potential of sand. [Doctoral Dissertation]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/16494

Delft University of Technology

2. Van der Zee, R.A. Influence of sand characteristics on the piping process:.

Degree: 2011, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:bfbcafac-502f-483a-bce0-3912c2800026

► One of the failure mechanisms of a dike is piping. A water level difference between the two sides of a dike causes a groundwater flow… (more)

▼ One of the failure mechanisms of a dike is piping. A water level difference between the two sides of a dike causes a groundwater flow in the sand layer under the (clay)dike. This flow can transport sand from under the dike to the exit point of the groundwater flow. The formula of Sellmeijer is derived mathematically from the equation of continuity, Poiseuille flow in the slit and equilibrium of grains on the bed of the channel, modeled with the equation of White. The influence of D70 on the critical gradient is linear in the Sellmeijer formula. However, coarse-grained sands are generally more permeable than fine-grained sands, which generally results in a net influence of the grain size on the critical gradient to be less than linear, but still positive. De Wit did experimental research and found that coarse grained sands have a higher critical gradient than fine grained sands. In the framework of Strength and Solicitation Flood Defences (SBW), experiments with piping were performed. It was found the influence of D70 on the critical gradient is less than is predicted with the Sellmeijer model. 1. Problem definition and objective of the research The objective of this thesis is to research the influence of the grain size and other sand characteristics on the critical head of piping, and to find an explanation for the difference found between SBW results and the Sellmeijer formula. Besides the mean objective of this thesis, a theoretical research to the velocity in the channel according to the current Sellmeijer model has been done. 2. Approach and results of the study of variables A study is performed to variables which are considered to have influence on the critical gradient. A multi variate analysis (MVA) has been performed successfully on SBW. The influence of the D70 is less than is predicted with the Sellmeijer formula. For fine sands, the Sellmeijer formula agreed quite well with the experiments, for coarse sands, it gives an unsafe prediction. Based on the MVA on SBW, an adapted Sellmeijer formula was formulated by Sellmeijer (Sellmeijer 2010a). The MVA was also tried on the dataset of de Wit, but was not successful. The data of de Wit was inserted in the adapted Sellmeijer formula. The outcome did not agree, this may be because the data of de Wit was possibly not corrected for the filter resistance, or because the range of variables in the de Wit dataset is different than the range of variables in the dataset of SBW. 3. Approach and results of research to the erosion mechanism In the Sellmeijer model, the equilibrium of grains is according to the model of White, which assumes individual grain erosion. It is researched if this is correct. A test facility was built to research the erosion process experimentally. It was found the grains are dislodged from the granular matrix as mass erosion, with a layer thickness of roughly 7 grains. The transport of sand in the test facility occurs in the pipe in mass transport, in waves, called slurry flow. It is not sure that the observed erosion of the grains from the… Advisors/Committee Members: Vrijling, J.K., Hicks, M.A., Barends, F.B.J., Sellmeijer, J.B., Van Beek, V.M., Kanning, W..

Subjects/Keywords: piping; grain size; critical gradient

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APA (6^th Edition):

Van der Zee, R. A. (2011). Influence of sand characteristics on the piping process:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:bfbcafac-502f-483a-bce0-3912c2800026

Chicago Manual of Style (16^th Edition):

Van der Zee, R A. “Influence of sand characteristics on the piping process:.” 2011. Masters Thesis, Delft University of Technology. Accessed December 10, 2019. http://resolver.tudelft.nl/uuid:bfbcafac-502f-483a-bce0-3912c2800026.

MLA Handbook (7^th Edition):

Van der Zee, R A. “Influence of sand characteristics on the piping process:.” 2011. Web. 10 Dec 2019.

Vancouver:

Van der Zee RA. Influence of sand characteristics on the piping process:. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2019 Dec 10]. Available from: http://resolver.tudelft.nl/uuid:bfbcafac-502f-483a-bce0-3912c2800026.

Council of Science Editors:

Van der Zee RA. Influence of sand characteristics on the piping process:. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:bfbcafac-502f-483a-bce0-3912c2800026

3. Wuenscher, Timothy. Regolith Transport Rates And Grain Size Distributions On Hillslopes, Sierra Nevada, Ca.

Degree: MS, Geology, 2018, University of North Dakota

URL: https://commons.und.edu/theses/2438

► Earth’s landforms constantly change as a result of erosion at the surface. Surface regolith is composed of a variety of different grains sizes, each… (more)

Subjects/Keywords: erosion; geomorphology; grain size; hillslopes

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APA (6^th Edition):

Wuenscher, T. (2018). Regolith Transport Rates And Grain Size Distributions On Hillslopes, Sierra Nevada, Ca. (Masters Thesis). University of North Dakota. Retrieved from https://commons.und.edu/theses/2438

Chicago Manual of Style (16^th Edition):

Wuenscher, Timothy. “Regolith Transport Rates And Grain Size Distributions On Hillslopes, Sierra Nevada, Ca.” 2018. Masters Thesis, University of North Dakota. Accessed December 10, 2019. https://commons.und.edu/theses/2438.

MLA Handbook (7^th Edition):

Wuenscher, Timothy. “Regolith Transport Rates And Grain Size Distributions On Hillslopes, Sierra Nevada, Ca.” 2018. Web. 10 Dec 2019.

Vancouver:

Wuenscher T. Regolith Transport Rates And Grain Size Distributions On Hillslopes, Sierra Nevada, Ca. [Internet] [Masters thesis]. University of North Dakota; 2018. [cited 2019 Dec 10]. Available from: https://commons.und.edu/theses/2438.

Council of Science Editors:

Wuenscher T. Regolith Transport Rates And Grain Size Distributions On Hillslopes, Sierra Nevada, Ca. [Masters Thesis]. University of North Dakota; 2018. Available from: https://commons.und.edu/theses/2438

University of Guelph

4. McCarrel, Kyle. Tracking watershed change using lake sediments on the Bruce Peninsula, Ontario, Canada .

Degree: 2019, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16247

► Sediment transports nutrients to lakes through overland runoff and streamflow, influenced by watershed weather and land use/management. Understanding climatic and land use influences on sediment… (more)

Subjects/Keywords: sediment; grain size; paleolimnology

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APA (6^th Edition):

McCarrel, K. (2019). Tracking watershed change using lake sediments on the Bruce Peninsula, Ontario, Canada . (Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16247

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):

McCarrel, Kyle. “Tracking watershed change using lake sediments on the Bruce Peninsula, Ontario, Canada .” 2019. Thesis, University of Guelph. Accessed December 10, 2019. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16247.

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

MLA Handbook (7^th Edition):

McCarrel, Kyle. “Tracking watershed change using lake sediments on the Bruce Peninsula, Ontario, Canada .” 2019. Web. 10 Dec 2019.

Vancouver:

McCarrel K. Tracking watershed change using lake sediments on the Bruce Peninsula, Ontario, Canada . [Internet] [Thesis]. University of Guelph; 2019. [cited 2019 Dec 10]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16247.

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

Council of Science Editors:

McCarrel K. Tracking watershed change using lake sediments on the Bruce Peninsula, Ontario, Canada . [Thesis]. University of Guelph; 2019. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/16247

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

Dalhousie University

5. deGelleke, Laura. Sediment dynamics during Heinrich event H1 inferred from grain size.

Degree: MS, Department of Oceanography, 2011, Dalhousie University

URL: http://hdl.handle.net/10222/13988

► Throughout the last glacial period, massive volumes of icebergs were discharged periodically from the Hudson Strait region during so-called Heinrich (H) events depositing sediments in… (more)

Subjects/Keywords: marine sediment; Heinrich event H1; grain size

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APA (6^th Edition):

deGelleke, L. (2011). Sediment dynamics during Heinrich event H1 inferred from grain size. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/13988

Chicago Manual of Style (16^th Edition):

deGelleke, Laura. “Sediment dynamics during Heinrich event H1 inferred from grain size.” 2011. Masters Thesis, Dalhousie University. Accessed December 10, 2019. http://hdl.handle.net/10222/13988.

MLA Handbook (7^th Edition):

deGelleke, Laura. “Sediment dynamics during Heinrich event H1 inferred from grain size.” 2011. Web. 10 Dec 2019.

Vancouver:

deGelleke L. Sediment dynamics during Heinrich event H1 inferred from grain size. [Internet] [Masters thesis]. Dalhousie University; 2011. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/10222/13988.

Council of Science Editors:

deGelleke L. Sediment dynamics during Heinrich event H1 inferred from grain size. [Masters Thesis]. Dalhousie University; 2011. Available from: http://hdl.handle.net/10222/13988

Addis Ababa University

6. Bezza, Tesfaye. INVESTIGATION INTO SOME OF THE ENGINEERING PROPERTIES OF SOILS FOUND IN ZIWAY TOWN, ETHIOPIA .

Degree: 2015, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/6257

► Investigation of the ground conditions is used for the economical design of the sub structural elements. It is also necessary to obtained sufficient information on… (more)

▼ Investigation of the ground conditions is used for the economical design of the sub structural elements. It is also necessary to obtained sufficient information on type, characteristics and distributions of a soil and rock underlying sites of proposed structures for feasibility and economic studies for a proposed project. The objective of this thesis is to investigate the engineering properties of soil found in Ziway town. To achieve its objective disturbed and undisturbed samples from different parts of the town were collected and laboratory tests were done on the collected samples. Grain size analysis tests revealed that, starting from few centimeters below the ground level to the depth of investigation which is three meters, the soil in Ziway town is mostly silts and silty sand. In which for silt soils of ziway town has clay content ranging from 6.72 to 10.93%, silt fraction 51.45 to 73.03%, sand fraction 15.16 to 40.4%, and gravel content from 0.84 to 1.88% and for silty sand soils clay content ranging from 0.66 to 4.41%, silt fraction 17.15 to 42.18%, sand fraction 52.06 to 81.3%, and gravel content from 0.89 to 1.6% Within the depth of exploration, the specific gravity of the town ranges from 2.40 to 2.62. These values are low compared with Arora, 2003, this is because the soils are light weighted. From the consistency limit test results, liquid limit ranges from 27–37 %, plastic limit from none plastic to limit ranges from 23 – 29% and plastic index from ranges 0-8%. Compaction tests carried out on samples collected from the study area revealed that the maximum dry density (MDD) ranges from1.22 to 1.55 g/cm3 and the optimum moisture content ranges from 22.6 to 35.8 percent. Shear strengh parameters from the graph of shear stress vesrsus displacement and maximum shear stress vesrsus applied vertical load respectively gives cohesion(C) and angle of internal friction (Φ). From those results the cohesion ranges from 2.90 to 20.15kPa and the angle of internal friction ranges from 19.8 . Advisors/Committee Members: DR.-ING. SAMUEL TADESSE (advisor).

Subjects/Keywords: PROPERTIES OF SOILS; Grain size; Ziway town

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APA (6^th Edition):

Bezza, T. (2015). INVESTIGATION INTO SOME OF THE ENGINEERING PROPERTIES OF SOILS FOUND IN ZIWAY TOWN, ETHIOPIA . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/6257

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):

Bezza, Tesfaye. “INVESTIGATION INTO SOME OF THE ENGINEERING PROPERTIES OF SOILS FOUND IN ZIWAY TOWN, ETHIOPIA .” 2015. Thesis, Addis Ababa University. Accessed December 10, 2019. http://etd.aau.edu.et/dspace/handle/123456789/6257.

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

MLA Handbook (7^th Edition):

Bezza, Tesfaye. “INVESTIGATION INTO SOME OF THE ENGINEERING PROPERTIES OF SOILS FOUND IN ZIWAY TOWN, ETHIOPIA .” 2015. Web. 10 Dec 2019.

Vancouver:

Bezza T. INVESTIGATION INTO SOME OF THE ENGINEERING PROPERTIES OF SOILS FOUND IN ZIWAY TOWN, ETHIOPIA . [Internet] [Thesis]. Addis Ababa University; 2015. [cited 2019 Dec 10]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/6257.

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

Council of Science Editors:

Bezza T. INVESTIGATION INTO SOME OF THE ENGINEERING PROPERTIES OF SOILS FOUND IN ZIWAY TOWN, ETHIOPIA . [Thesis]. Addis Ababa University; 2015. Available from: http://etd.aau.edu.et/dspace/handle/123456789/6257

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

California State University – Sacramento

7. Davalos, Jennifer. Spawning habitat evaluation in the low flow channel of the Feather River.

Degree: MS, Geology, 2019, California State University – Sacramento

URL: http://hdl.handle.net/10211.3/207983

► Hydraulic mining, gravel mining, gold dredging, timber harvesting, water diversions, urbanization, and the Oroville dam have played a role in degrading the spawning habitat of… (more)

Subjects/Keywords: Chinook salmon; Grain size; river restoration; riffle

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APA (6^th Edition):

Davalos, J. (2019). Spawning habitat evaluation in the low flow channel of the Feather River. (Masters Thesis). California State University – Sacramento. Retrieved from http://hdl.handle.net/10211.3/207983

Chicago Manual of Style (16^th Edition):

Davalos, Jennifer. “Spawning habitat evaluation in the low flow channel of the Feather River.” 2019. Masters Thesis, California State University – Sacramento. Accessed December 10, 2019. http://hdl.handle.net/10211.3/207983.

MLA Handbook (7^th Edition):

Davalos, Jennifer. “Spawning habitat evaluation in the low flow channel of the Feather River.” 2019. Web. 10 Dec 2019.

Vancouver:

Davalos J. Spawning habitat evaluation in the low flow channel of the Feather River. [Internet] [Masters thesis]. California State University – Sacramento; 2019. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/10211.3/207983.

Council of Science Editors:

Davalos J. Spawning habitat evaluation in the low flow channel of the Feather River. [Masters Thesis]. California State University – Sacramento; 2019. Available from: http://hdl.handle.net/10211.3/207983

Linköping University

8. Moiz, Muhammad. The influence of grain size on mechanical properties of Inconel 718.

Degree: Engineering Materials, 2013, Linköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113148

►

The thesis work discuss about how the materials mechanical properties are influenced by the microstructure. The most common way of altering the microstructure of… (more)

Subjects/Keywords: Super alloys; Inconel 718; microscopy; grain size

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APA (6^th Edition):

Moiz, M. (2013). The influence of grain size on mechanical properties of Inconel 718. (Thesis). Linköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113148

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):

Moiz, Muhammad. “The influence of grain size on mechanical properties of Inconel 718.” 2013. Thesis, Linköping University. Accessed December 10, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113148.

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

MLA Handbook (7^th Edition):

Moiz, Muhammad. “The influence of grain size on mechanical properties of Inconel 718.” 2013. Web. 10 Dec 2019.

Vancouver:

Moiz M. The influence of grain size on mechanical properties of Inconel 718. [Internet] [Thesis]. Linköping University; 2013. [cited 2019 Dec 10]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113148.

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

Council of Science Editors:

Moiz M. The influence of grain size on mechanical properties of Inconel 718. [Thesis]. Linköping University; 2013. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113148

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

Iowa State University

9. Zhu, Bowen. Thermal transport and thermal structural domain in microfibers.

Degree: 2018, Iowa State University

URL: https://lib.dr.iastate.edu/etd/16499

► Microfibers have been playing a fundamental role in heat dissipation in composite structures like fiber-reinforced polymer and ceramic matrix composite. The growth of industrial application… (more)

▼ Microfibers have been playing a fundamental role in heat dissipation in composite structures like fiber-reinforced polymer and ceramic matrix composite. The growth of industrial application calls out a demand for experimental investigation on thermal properties and structure of microfibers for continued improvement on performance. This work furthers the current understanding of structure-property relationship in microfibers through use of combined thermal characterization and structure characterization on the same samples. Human hair, ultra-high molecular weight polyethylene (UHMW-PE) microfiber and silicon carbide (SiC) microwire are sampled as representatives of natural polymer fiber, synthetic polymer fiber and ceramic fiber, respectively. Thermal characterization for them was carried out in the temperature range between 20 K and room temperature using the transient electrothermal (TET) technique. Structure analysis includes x-ray diffraction (XRD) and Raman spectroscopy. The investigation on human hair finds that the short range order in protein (1-2 nm in size) can be revealed by the phonon life time at low temperatures. The grain boundary-induced phonon mean free path, named as structural thermal domain (STD) size in this work, is found close to the crystallite size given by XRD and comparable with the rigid domain size given by nuclear magnetic resonance. Grey hair has a higher thermal diffusivity and larger STD size than black hair, probably due to altered keratin grain size or loss of melanin. In the study on UHMW-PE microfibers, metal-like thermal conductivity (51 W/m∙K) is achieved by heat stretching a commercially available sample, Spectra S-900. XRD analysis finds that the crystallite size and orientation has not been altered by mechanical stretching and, however, a decrease in crystallinity from 92% to 83%. Polarized Raman spectroscopy indicates improved chain alignment in amorphous region. The investigation on SiC microwires is a comparative study for three advanced 3C-SiC microwires, including Sylramic, Hi-Nicalon S and a sample fabricated by laser chemical vapor deposition (LCVD). Nanosized grains in the microwires can be detected by STD analysis, XRD and Raman spectroscopy. Unlike the hair sample and the UHMW-PE that contain molecular chains, 3C-SiC possess compact and cross-linked molecular structure. Probably due to this, the STD size is found nearly one order of magnification smaller than the crystalline size.

Subjects/Keywords: grain size; spectroscopy; thermal characterization; Mechanical Engineering

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APA (6^th Edition):

Zhu, B. (2018). Thermal transport and thermal structural domain in microfibers. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/16499

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, Bowen. “Thermal transport and thermal structural domain in microfibers.” 2018. Thesis, Iowa State University. Accessed December 10, 2019. https://lib.dr.iastate.edu/etd/16499.

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, Bowen. “Thermal transport and thermal structural domain in microfibers.” 2018. Web. 10 Dec 2019.

Vancouver:

Zhu B. Thermal transport and thermal structural domain in microfibers. [Internet] [Thesis]. Iowa State University; 2018. [cited 2019 Dec 10]. Available from: https://lib.dr.iastate.edu/etd/16499.

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

Council of Science Editors:

Zhu B. Thermal transport and thermal structural domain in microfibers. [Thesis]. Iowa State University; 2018. Available from: https://lib.dr.iastate.edu/etd/16499

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

Boston College

10. Valentine, Kendall. Characterization of the bed, critical boundary shear stress, roughness, and bedload transport in the Connecticut River Estuary.

Degree: MS, Earth and Environmental Sciences, 2015, Boston College

URL: http://dlib.bc.edu/islandora/object/bc-ir:104550

► This study characterizes the bed of the Connecticut River estuary in terms of grain size and bedforms, and relates these to river discharge, tidal currents,… (more)

Subjects/Keywords: Connecticut River; estuary; grain size; sediment transport

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APA (6^th Edition):

Valentine, K. (2015). Characterization of the bed, critical boundary shear stress, roughness, and bedload transport in the Connecticut River Estuary. (Masters Thesis). Boston College. Retrieved from http://dlib.bc.edu/islandora/object/bc-ir:104550

Chicago Manual of Style (16^th Edition):

Valentine, Kendall. “Characterization of the bed, critical boundary shear stress, roughness, and bedload transport in the Connecticut River Estuary.” 2015. Masters Thesis, Boston College. Accessed December 10, 2019. http://dlib.bc.edu/islandora/object/bc-ir:104550.

MLA Handbook (7^th Edition):

Valentine, Kendall. “Characterization of the bed, critical boundary shear stress, roughness, and bedload transport in the Connecticut River Estuary.” 2015. Web. 10 Dec 2019.

Vancouver:

Valentine K. Characterization of the bed, critical boundary shear stress, roughness, and bedload transport in the Connecticut River Estuary. [Internet] [Masters thesis]. Boston College; 2015. [cited 2019 Dec 10]. Available from: http://dlib.bc.edu/islandora/object/bc-ir:104550.

Council of Science Editors:

Valentine K. Characterization of the bed, critical boundary shear stress, roughness, and bedload transport in the Connecticut River Estuary. [Masters Thesis]. Boston College; 2015. Available from: http://dlib.bc.edu/islandora/object/bc-ir:104550

University of Manitoba

11. Gerrard, William. Optimal machinery use intensity for a large farm in west central Manitoba.

Degree: Agribusiness and Agricultural Economics, 2011, University of Manitoba

URL: http://hdl.handle.net/1993/4780

► Farmers in Western Canada are continually assessing where to invest their next dollar. In considering a farm expansion and the machinery assets they need to… (more)

Subjects/Keywords: Farm; Size; Machinery; Efficient; Grain; Manitoba; Canada

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APA (6^th Edition):

Gerrard, W. (2011). Optimal machinery use intensity for a large farm in west central Manitoba. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/4780

Chicago Manual of Style (16^th Edition):

Gerrard, William. “Optimal machinery use intensity for a large farm in west central Manitoba.” 2011. Masters Thesis, University of Manitoba. Accessed December 10, 2019. http://hdl.handle.net/1993/4780.

MLA Handbook (7^th Edition):

Gerrard, William. “Optimal machinery use intensity for a large farm in west central Manitoba.” 2011. Web. 10 Dec 2019.

Vancouver:

Gerrard W. Optimal machinery use intensity for a large farm in west central Manitoba. [Internet] [Masters thesis]. University of Manitoba; 2011. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/1993/4780.

Council of Science Editors:

Gerrard W. Optimal machinery use intensity for a large farm in west central Manitoba. [Masters Thesis]. University of Manitoba; 2011. Available from: http://hdl.handle.net/1993/4780

University of Sydney

12. Anguo, Wang. The effect of grain size on the low-cycle fatigue behaviours of a CrMnFeCoNi high entropy alloy .

Degree: 2019, University of Sydney

URL: http://hdl.handle.net/2123/21129

► High-entropy alloys (HEAs) alloys are alloys formed by at 5 or more elements, which have high strength, excellent ductility, and wear, corrosion and creep resistance.… (more)

Subjects/Keywords: HEAs; Low Cycle fatigue; Grain size

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APA (6^th Edition):

Anguo, W. (2019). The effect of grain size on the low-cycle fatigue behaviours of a CrMnFeCoNi high entropy alloy . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/21129

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):

Anguo, Wang. “The effect of grain size on the low-cycle fatigue behaviours of a CrMnFeCoNi high entropy alloy .” 2019. Thesis, University of Sydney. Accessed December 10, 2019. http://hdl.handle.net/2123/21129.

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

MLA Handbook (7^th Edition):

Anguo, Wang. “The effect of grain size on the low-cycle fatigue behaviours of a CrMnFeCoNi high entropy alloy .” 2019. Web. 10 Dec 2019.

Vancouver:

Anguo W. The effect of grain size on the low-cycle fatigue behaviours of a CrMnFeCoNi high entropy alloy . [Internet] [Thesis]. University of Sydney; 2019. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/2123/21129.

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

Council of Science Editors:

Anguo W. The effect of grain size on the low-cycle fatigue behaviours of a CrMnFeCoNi high entropy alloy . [Thesis]. University of Sydney; 2019. Available from: http://hdl.handle.net/2123/21129

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

University of Canterbury

13. Gardiner, Benjamin Robert. High temperature creep performance of alloy 800H.

Degree: Mechanical, 2014, University of Canterbury

URL: http://hdl.handle.net/10092/9949

► Investigations on post service material showed that Alloy 800H pigtails from methanol producer Methanex have service lives ranging from 3 to 18 years. Because of… (more)

Subjects/Keywords: creep; 800H; grain size; EBSD; 3D; microstructure; twins; grain boundary; morphology

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APA (6^th Edition):

Gardiner, B. R. (2014). High temperature creep performance of alloy 800H. (Thesis). University of Canterbury. Retrieved from http://hdl.handle.net/10092/9949

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):

Gardiner, Benjamin Robert. “High temperature creep performance of alloy 800H.” 2014. Thesis, University of Canterbury. Accessed December 10, 2019. http://hdl.handle.net/10092/9949.

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

MLA Handbook (7^th Edition):

Gardiner, Benjamin Robert. “High temperature creep performance of alloy 800H.” 2014. Web. 10 Dec 2019.

Vancouver:

Gardiner BR. High temperature creep performance of alloy 800H. [Internet] [Thesis]. University of Canterbury; 2014. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/10092/9949.

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

Council of Science Editors:

Gardiner BR. High temperature creep performance of alloy 800H. [Thesis]. University of Canterbury; 2014. Available from: http://hdl.handle.net/10092/9949

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

14. Persson, Erik. Austenite grain growth in bearing steels : An investigation on steel grades 100Cr6 and 100 CRMnMoSi8-4-6.

Degree: Materials Science and Engineering, 2014, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-140433

► An investigation of austenite grain growth of two bearing steel grades; 100Cr6 and100CrMnMoSi8-4-6 is performed. Austenitization treatments were performed between 860°C and 1200 °C… (more)

▼ An investigation of austenite grain growth of two bearing steel grades; 100Cr6 and100CrMnMoSi8-4-6 is performed. Austenitization treatments were performed between 860°C and 1200 °C for 5 minutes to 5 hours and the grain size was determined for each sample.Grain boundary etching was carried out using a water based, picric-acid etchant. Generally,100CrMnMoSi8-4-6 was harder to etch than 100Cr6. Therefore, a precipitation heattreatment was performed in order to facilitate etching of prior austenite grain boundaries in100CrMnMoSi8-4-6. The precipitation treatment was found to be effective. However, theprecipitation heat treatment was not suitable for 100Cr6 as the grain size increased duringthe precipitation heat treatment.Light optical microscope equipped with a camera was utilized to take micrographs for grainsize evaluation. Jeffries' standard procedure according to ASTM E112-96 was used tomeasure the grain size. The results shows that the austenite grain size increases withtemperature and time as expected. The experimental data was fitted to a well-known graingrowth model. The model only worked for the temperatures investigated and could not bemade to fit different temperatures.Local grain size variation was studied and its influence on fatigue properties was evaluated.The result showed that variation in local grain size can significantly alter the fatigueproperties. The findings are only theoretical and have not been tested practically.Two different spheroidization heat treatments and one homogenization heat treatmentwere performed. Both spheroidization heat treatments investigated exhibited similar grainsize. The homogenization heat treatment reduced the local grain size variation.Homogenization treatment prior to the spheroidization treatments did not increase ordecrease the grain size. The long heating, holding and cooling times in the secondspheroidization heat treatment is probably the reason for the lack of grain refinementcompared to the first spheroidization heat treatment. The grains had time to grow to theinitial austenite grain size during each cycle.

Subjects/Keywords: Grain growth; Grain size

…38 Figure 4.3 Graphs shows the grain size after different spheroidization heat treatments… …44 Figure 5.2 Shows the grain size after different austenitization times at 860 °C for both… …46 Figure 5.3 Shows the grain size after different austenitization times at 900 °C for both… …47 Figure 5.4 Shows the grain size after different austenitization times at 1000 °C for… …47 Figure 5.5 Shows the grain size after different austenitization times at 1100 °C for…

10 more images…

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APA (6^th Edition):

Persson, E. (2014). Austenite grain growth in bearing steels : An investigation on steel grades 100Cr6 and 100 CRMnMoSi8-4-6. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-140433

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):

Persson, Erik. “Austenite grain growth in bearing steels : An investigation on steel grades 100Cr6 and 100 CRMnMoSi8-4-6.” 2014. Thesis, KTH. Accessed December 10, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-140433.

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

MLA Handbook (7^th Edition):

Persson, Erik. “Austenite grain growth in bearing steels : An investigation on steel grades 100Cr6 and 100 CRMnMoSi8-4-6.” 2014. Web. 10 Dec 2019.

Vancouver:

Persson E. Austenite grain growth in bearing steels : An investigation on steel grades 100Cr6 and 100 CRMnMoSi8-4-6. [Internet] [Thesis]. KTH; 2014. [cited 2019 Dec 10]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-140433.

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

Council of Science Editors:

Persson E. Austenite grain growth in bearing steels : An investigation on steel grades 100Cr6 and 100 CRMnMoSi8-4-6. [Thesis]. KTH; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-140433

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

15. Yin, Jielong. Molecular Dynamics Study on the Grain Growth in Nanocrystalline Aluminum.

Degree: MS, Mechanical Engineering, 2016, Santa Clara University

URL: https://scholarcommons.scu.edu/mech_mstr/4

► In recent years, nano-materials have been a popular direction of research in the field of materials science. Nanocrystalline aluminum has been of particular intrest… (more)

Subjects/Keywords: Grain growth; Grain size; Molecular-dynamics simulation; Mechanical Engineering

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APA (6^th Edition):

Yin, J. (2016). Molecular Dynamics Study on the Grain Growth in Nanocrystalline Aluminum. (Masters Thesis). Santa Clara University. Retrieved from https://scholarcommons.scu.edu/mech_mstr/4

Chicago Manual of Style (16^th Edition):

Yin, Jielong. “Molecular Dynamics Study on the Grain Growth in Nanocrystalline Aluminum.” 2016. Masters Thesis, Santa Clara University. Accessed December 10, 2019. https://scholarcommons.scu.edu/mech_mstr/4.

MLA Handbook (7^th Edition):

Yin, Jielong. “Molecular Dynamics Study on the Grain Growth in Nanocrystalline Aluminum.” 2016. Web. 10 Dec 2019.

Vancouver:

Yin J. Molecular Dynamics Study on the Grain Growth in Nanocrystalline Aluminum. [Internet] [Masters thesis]. Santa Clara University; 2016. [cited 2019 Dec 10]. Available from: https://scholarcommons.scu.edu/mech_mstr/4.

Council of Science Editors:

Yin J. Molecular Dynamics Study on the Grain Growth in Nanocrystalline Aluminum. [Masters Thesis]. Santa Clara University; 2016. Available from: https://scholarcommons.scu.edu/mech_mstr/4

North Carolina State University

16. Shi, Jibin. Predictive Microstructural Modeling of Grain-boundary Interactions and Their Effects on Overall Crystalline Behavior.

Degree: PhD, Mechanical Engineering, 2009, North Carolina State University

URL: http://www.lib.ncsu.edu/resolver/1840.16/3586

► A dislocation-density grain boundary interaction scheme (DDGBI) has been developed to account for complex interrelated dislocation-density interactions of emission, absorption and transmission in grain-boundary (GB)… (more)

▼ A dislocation-density grain boundary interaction scheme (DDGBI) has been developed to account for complex interrelated dislocation-density interactions of emission, absorption and transmission in grain-boundary (GB) regions for bicrystals and polycrystals with different random and coincident site lattice (CSL) GB arrangements. This scheme is coupled to a dislocation-density crystalline plasticity formulation and specialized finite-element scheme at different physical scales. The DDGBI scheme is based on slip-system compatibility, local resolved shear stresses, and immobile and mobile dislocation-density activities at GBs. A conservation law for dislocation-densities is used to balance dislocation-density absorption, transmission and emission in GB regions. It is shown that dislocation-density absorptions and pile-ups will increase immobile dislocation-densities in high angle CSL boundaries, such as Î£17b. Lower angle CSLs, such as Î£1, are characterized by high transmission rates and insignificant GB dislocation-density accumulations. The identification of how different material mechanisms dominate underscores that GB activities, such as dislocation-density absorption, transmission and emission are interrelated interactions. These GB processes can be potentially controlled for desired material behavior. This methodology, together with grain boundary sliding (GBS) scheme and a misorientation dependence on initial GB dislocation-densities, was extended to account for grain size effects on strength. The behavior of polycrystalline aggregates with random low angle and random high angle GBs was also investigated with different crack lengths. For aggregates with random low angle GBs, dislocation-density transmission dominates at the GBs, which indicates that the low angle GB will not significantly change crack growth orientations. For aggregates with random high angle GBs, extensive dislocation-density absorption and pile-ups occur. The high stresses along the GB regions can result in intergranular crack growth due to potential crack nucleation sites in the GB. It is also shown that GB sliding affects crack behavior by attenuating normal stresses and dislocation-density accumulation at critical GB interfaces. Advisors/Committee Members: Larry Silverberg, Committee Member (advisor), Mohammed Zikry, Committee Chair (advisor), Ron Scattergood, Committee Member (advisor), Kara Peters, Committee Member (advisor).

Subjects/Keywords: grain boundary dislocation density interaction; grain boundary; grain size effects; crack; finite element method; grain boundary sliding

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APA (6^th Edition):

Shi, J. (2009). Predictive Microstructural Modeling of Grain-boundary Interactions and Their Effects on Overall Crystalline Behavior. (Doctoral Dissertation). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/3586

Chicago Manual of Style (16^th Edition):

Shi, Jibin. “Predictive Microstructural Modeling of Grain-boundary Interactions and Their Effects on Overall Crystalline Behavior.” 2009. Doctoral Dissertation, North Carolina State University. Accessed December 10, 2019. http://www.lib.ncsu.edu/resolver/1840.16/3586.

MLA Handbook (7^th Edition):

Shi, Jibin. “Predictive Microstructural Modeling of Grain-boundary Interactions and Their Effects on Overall Crystalline Behavior.” 2009. Web. 10 Dec 2019.

Vancouver:

Shi J. Predictive Microstructural Modeling of Grain-boundary Interactions and Their Effects on Overall Crystalline Behavior. [Internet] [Doctoral dissertation]. North Carolina State University; 2009. [cited 2019 Dec 10]. Available from: http://www.lib.ncsu.edu/resolver/1840.16/3586.

Council of Science Editors:

Shi J. Predictive Microstructural Modeling of Grain-boundary Interactions and Their Effects on Overall Crystalline Behavior. [Doctoral Dissertation]. North Carolina State University; 2009. Available from: http://www.lib.ncsu.edu/resolver/1840.16/3586

Brunel University

17. Haghayeghi, Reza. Grain refinement and nucleation processes in aluminium alloys through liquid shearing.

Degree: PhD, 2009, Brunel University

URL: http://bura.brunel.ac.uk/handle/2438/6358 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557716

► The industrial practice of grain refinement of aluminium alloys involves the addition of inoculant particles to initiate alpha-aluminium grains at small undercoolings. This results in… (more)

▼ The industrial practice of grain refinement of aluminium alloys involves the addition of inoculant particles to initiate alpha-aluminium grains at small undercoolings. This results in a uniformly fine, equiaxed as-cast microstructure and is commonly achieved using Al-Ti-B additions. The phase responsible for initiation of grains in aluminium melts inoculated with Al-Ti-B was determined during the 1990s; since that time, scientific understanding of grain refinement has advanced rapidly. However, one of the main problems of addition inoculants is impurities which is added to the melt and may affect the desired characteristics of the product. With regards to this problem other methods of refinement and the mechanisms of refining have not been fully understood and prediction of as-cast Microstructures in aluminium alloys has much scope for improvement. In this thesis: 1-Factors in establishing equiaxed microstructure were analysed and the origin of equiaxed grains were explored. Then the nucleation process and the involved mechanisms were investigated in depth and control of nucleation process to achieve a fine and uniform structure was set as target. 2-Refinement of microstructure with introduction of shearing was evaluated and the process of refinement in the mushy zone (semisolid state) as a base line was established. Then introduction of shearing above liquidus as a development was analysed and outstanding refinement was seen with shearing above liquidus which have not been investigated properly elsewhere. 3- The mechanisms of refinement by introducing shearing were investigated and the refining mechanisms below and specifically above liquidus were investigated systematically. As results an appropriate understanding about the mechanisms of nucleation and refinement above liquidus was established. 4- Finally, with simulation the most dominant factor in approaching fine grain size by applying shear was identified and the results of experimental examination was verified by simulation.

Subjects/Keywords: 669; Grain refinement; Nucleation; Liquid shearing; 7075; 5754; Al-10% Mg alloys; Grain size

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APA (6^th Edition):

Haghayeghi, R. (2009). Grain refinement and nucleation processes in aluminium alloys through liquid shearing. (Doctoral Dissertation). Brunel University. Retrieved from http://bura.brunel.ac.uk/handle/2438/6358 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557716

Chicago Manual of Style (16^th Edition):

Haghayeghi, Reza. “Grain refinement and nucleation processes in aluminium alloys through liquid shearing.” 2009. Doctoral Dissertation, Brunel University. Accessed December 10, 2019. http://bura.brunel.ac.uk/handle/2438/6358 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557716.

MLA Handbook (7^th Edition):

Haghayeghi, Reza. “Grain refinement and nucleation processes in aluminium alloys through liquid shearing.” 2009. Web. 10 Dec 2019.

Vancouver:

Haghayeghi R. Grain refinement and nucleation processes in aluminium alloys through liquid shearing. [Internet] [Doctoral dissertation]. Brunel University; 2009. [cited 2019 Dec 10]. Available from: http://bura.brunel.ac.uk/handle/2438/6358 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557716.

Council of Science Editors:

Haghayeghi R. Grain refinement and nucleation processes in aluminium alloys through liquid shearing. [Doctoral Dissertation]. Brunel University; 2009. Available from: http://bura.brunel.ac.uk/handle/2438/6358 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557716

University of California – San Diego

18. Zhou, Naixie. Thermodynamic Modeling of Grain Boundaries Complexions and Developing Grain Boundary Complexion Diagrams for Multicomponent Metallic Systems.

Degree: Materials Sci and Engineering, 2017, University of California – San Diego

URL: http://www.escholarship.org/uc/item/5t29n7g8

► Grain boundaries (GBs) in crystalline materials can be treated as interfacial phases which are called complexions. Like bulk phases, GB complexions can undergo first-order or… (more)

▼ Grain boundaries (GBs) in crystalline materials can be treated as interfacial phases which are called complexions. Like bulk phases, GB complexions can undergo first-order or continuous transitions with varying thermodynamic potential and such GB complexion transitions can cause abrupt changes in structure and chemistry of GBs, thereby critically influencing a broad range of interfacial controlled materials’ properties such as sintering, grain growth, creep, embrittlement, electrical/thermal/ionic conductivity. Specifically, the presence of multiple dopants and impurities can significantly alter the GB complexion formation and transition. In the first part, a thermodynamic framework is developed to forecast the formation and stability of disordered premelting-like grain boundary complexions in multicomponent alloys to consider the interactions of multiple alloying elements. Subsequently, ternary and quaternary grain boundary diagrams have been computed and used to forecast the sintering behaviors of W–Ni–M (M = Fe, Co, Cr, Zr, Nb and Ti) and Mo–Si–B–M (M = Ni, Co and Fe) systems. In the second part, grain boundary adsorption transitions are studied using an Ising type lattice model. The GB complexion diagram is computed for the average general GBs in Bi-doped Ni. The predictions are calibrated with previously-reported density functional theory calculations and further validated by aberration corrected scanning transmission electron microscopy characterization results as well as prior Auger electron spectroscopy measurements. Subsequently, using the same model, a systematics of grain boundary adsorption transitions is derived. A normalized segregation strength is defined to represent the effects of mixing energy, solute strain and differential bonding energies as well as the misorientation for symmetrical twist boundaries, which is shown to be a dominant factor in controlling adsorption transition behaviors. This derived systematics of GBs exhibits phenomenological similarities to the cases of multilayer adsorption of inert gas molecules on the surfaces of attractive substrates, enriches the classical grain boundary segregation/adsorption theory. In the third part, bulk computational thermodynamics are extended to model binary poly/nanocrystalline alloys by incorporating grain boundary energies computed by a multilayer adsorption model. A new kind of stability diagram for equilibrium-grain-size poly/nanocrystalline alloys is developed. Computed results for Zr-doped Fe are validated by prior experiments and provide new physical insights regarding stabilization of nanoalloys and its relation to solid-state amorphization. In the final part, the effect of multicomponent alloying on the thermal stability of nanocrystalline alloys is studied. By introducing more alloying components, the grain boundary energy can be reduced more significantly via both bulk and grain-boundary high-entropy effects with increasing temperature at/within the solid solubility limit, thereby reducing the thermodynamic driving force for grain…

Subjects/Keywords: Materials Science; grain boundary segregation; grain size stability; interfacial thermodynamics; multicomponent alloying; nanocrystalline materials

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

APA (6^th Edition):

Zhou, N. (2017). Thermodynamic Modeling of Grain Boundaries Complexions and Developing Grain Boundary Complexion Diagrams for Multicomponent Metallic Systems. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/5t29n7g8

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):

Zhou, Naixie. “Thermodynamic Modeling of Grain Boundaries Complexions and Developing Grain Boundary Complexion Diagrams for Multicomponent Metallic Systems.” 2017. Thesis, University of California – San Diego. Accessed December 10, 2019. http://www.escholarship.org/uc/item/5t29n7g8.

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

MLA Handbook (7^th Edition):

Zhou, Naixie. “Thermodynamic Modeling of Grain Boundaries Complexions and Developing Grain Boundary Complexion Diagrams for Multicomponent Metallic Systems.” 2017. Web. 10 Dec 2019.

Vancouver:

Zhou N. Thermodynamic Modeling of Grain Boundaries Complexions and Developing Grain Boundary Complexion Diagrams for Multicomponent Metallic Systems. [Internet] [Thesis]. University of California – San Diego; 2017. [cited 2019 Dec 10]. Available from: http://www.escholarship.org/uc/item/5t29n7g8.

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

Council of Science Editors:

Zhou N. Thermodynamic Modeling of Grain Boundaries Complexions and Developing Grain Boundary Complexion Diagrams for Multicomponent Metallic Systems. [Thesis]. University of California – San Diego; 2017. Available from: http://www.escholarship.org/uc/item/5t29n7g8

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

Universitat Ramon Llull

19. Sempere Nomen, Bernat. Synthesis and characterization of CVD graphene on copper: Towards the fabrication of synthetic graphene suspensions.

Degree: 2017, Universitat Ramon Llull

URL: http://hdl.handle.net/10803/401494

► Graphene is a one-atom thick layer of carbon, tightly packed in a hexagonal lattice. It can be seen as each one of the layers that… (more)

▼ Graphene is a one-atom thick layer of carbon, tightly packed in a hexagonal lattice. It can be seen as each one of the layers that form graphite. It has been called the wonder material of the XXI century, because it has amazing properties that opens the possibility for many applications. Presently, it can be found in the market as both films deposited on different substrates, mainly by Chemical Vapour Deposition (CVD), and particles or suspensions consisting of graphene platelets produced by exfoliation of graphite. CVD graphene results in polycrystalline films commonly of high quality, in relation to monolayer structure, low density of defects and purity. On the other hand, exfoliated materials show almost no control over the size nor the number of layers which results in suspensions of multilayer graphene or even thin graphite flakes, often with high oxygen content. This thesis is aimed at synthesizing a new kind of graphene product, consisting of a suspension of synthetic graphene flakes of high quality, monolayer structured with narrow and controllable particle size distributions. To achieve this goal, different developments on graphene synthesis and transfer methods have been combined. First, a CVD reactor was built, able to produce monolayer graphene and experimental conditions to tailor graphene grain size were studied using gas flow restrictions inside the reactor. Second, a simple, robust and repetitive method based on photocatalytic oxidization of copper through graphene’s grain boundaries was developed in order to measure graphene grain size. Finally, graphene was deposited onto high area copper substrates and subsequently transferred to suspension using an electrochemical approach with and without surfactants. Graphene samples are characterized throughout the work by optical microscopy, SEM, AFM and Raman Spectroscopy. To evaluate the quality of produced graphene samples, THz Time Domain Spectroscopy (THz-TDS) was also used and the influence of grain size on the THz conductivity was explored. Moreover, electrical contacts were microfabricated to allow the measurement of graphene conductivity across several lengths as well as across single grain boundaries and monolayer and bilayer islands. Characterization using Tyndall effect and Raman spectroscopy after filtration of synthetic graphene suspensions, confirms that monolayer graphene flakes can be found on aqueous suspension containing minimal amounts of surfactant. Advisors/Committee Members: Universitat Ramon Llull. IQS SE - Enginyeria Química i Ciència de Materials (2015 - ), [email protected] (authoremail), true (authoremailshow), Colominas Guardia, Carles, (director), true (authorsendemail).

Subjects/Keywords: Graphene; CVD; Grain size; Grain Boundaries; Grafeno; Enginyeria, indústria i construcció; 546; 66

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

APA (6^th Edition):

Sempere Nomen, B. (2017). Synthesis and characterization of CVD graphene on copper: Towards the fabrication of synthetic graphene suspensions. (Thesis). Universitat Ramon Llull. Retrieved from http://hdl.handle.net/10803/401494

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):

Sempere Nomen, Bernat. “Synthesis and characterization of CVD graphene on copper: Towards the fabrication of synthetic graphene suspensions.” 2017. Thesis, Universitat Ramon Llull. Accessed December 10, 2019. http://hdl.handle.net/10803/401494.

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

MLA Handbook (7^th Edition):

Sempere Nomen, Bernat. “Synthesis and characterization of CVD graphene on copper: Towards the fabrication of synthetic graphene suspensions.” 2017. Web. 10 Dec 2019.

Vancouver:

Sempere Nomen B. Synthesis and characterization of CVD graphene on copper: Towards the fabrication of synthetic graphene suspensions. [Internet] [Thesis]. Universitat Ramon Llull; 2017. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/10803/401494.

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

Council of Science Editors:

Sempere Nomen B. Synthesis and characterization of CVD graphene on copper: Towards the fabrication of synthetic graphene suspensions. [Thesis]. Universitat Ramon Llull; 2017. Available from: http://hdl.handle.net/10803/401494

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

University of Michigan

20. Jung, Yongsub. Determination of Soil Grain Size Distribution by Soil Sedimentation and Image Processing.

Degree: PhD, Civil Engineering, 2010, University of Michigan

URL: http://hdl.handle.net/2027.42/77895

► Over the last decades, advances in digital imaging have moved many industries to adopt digital image processing (DIP) to determine the grain size distribution of… (more)

Subjects/Keywords: Soil Grain Size Distribution; Soil Grain Size Analysis; Image Processing; Soil Sedimentation; Civil and Environmental Engineering; Engineering

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APA (6^th Edition):

Jung, Y. (2010). Determination of Soil Grain Size Distribution by Soil Sedimentation and Image Processing. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/77895

Chicago Manual of Style (16^th Edition):

Jung, Yongsub. “Determination of Soil Grain Size Distribution by Soil Sedimentation and Image Processing.” 2010. Doctoral Dissertation, University of Michigan. Accessed December 10, 2019. http://hdl.handle.net/2027.42/77895.

MLA Handbook (7^th Edition):

Jung, Yongsub. “Determination of Soil Grain Size Distribution by Soil Sedimentation and Image Processing.” 2010. Web. 10 Dec 2019.

Vancouver:

Jung Y. Determination of Soil Grain Size Distribution by Soil Sedimentation and Image Processing. [Internet] [Doctoral dissertation]. University of Michigan; 2010. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/2027.42/77895.

Council of Science Editors:

Jung Y. Determination of Soil Grain Size Distribution by Soil Sedimentation and Image Processing. [Doctoral Dissertation]. University of Michigan; 2010. Available from: http://hdl.handle.net/2027.42/77895

21. Konwea, Anthony Chuka. Experimental Study of the Effect of Grain Size and Grain Size Distribution Curve on Creep and Stress Relaxation in a Beach Sand.

Degree: 2016, The Catholic University of America

URL: http://hdl.handle.net/1961/cuislandora:30412

►

Degree Awarded: D.Engr. Civil Engineering. The Catholic University of America

In order to obtain a greater qualitative understanding of the mechanisms behind the inverse phenomena… (more)

Subjects/Keywords: Civil engineering; Geotechnology; Geological engineering; Creep; Geotechnical Engineering; Grain Size; Grain Size Distribution Curve; Sands; Stress Relaxation

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APA (6^th Edition):

Konwea, A. C. (2016). Experimental Study of the Effect of Grain Size and Grain Size Distribution Curve on Creep and Stress Relaxation in a Beach Sand. (Thesis). The Catholic University of America. Retrieved from http://hdl.handle.net/1961/cuislandora:30412

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):

Konwea, Anthony Chuka. “Experimental Study of the Effect of Grain Size and Grain Size Distribution Curve on Creep and Stress Relaxation in a Beach Sand.” 2016. Thesis, The Catholic University of America. Accessed December 10, 2019. http://hdl.handle.net/1961/cuislandora:30412.

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

MLA Handbook (7^th Edition):

Konwea, Anthony Chuka. “Experimental Study of the Effect of Grain Size and Grain Size Distribution Curve on Creep and Stress Relaxation in a Beach Sand.” 2016. Web. 10 Dec 2019.

Vancouver:

Konwea AC. Experimental Study of the Effect of Grain Size and Grain Size Distribution Curve on Creep and Stress Relaxation in a Beach Sand. [Internet] [Thesis]. The Catholic University of America; 2016. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/1961/cuislandora:30412.

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

Council of Science Editors:

Konwea AC. Experimental Study of the Effect of Grain Size and Grain Size Distribution Curve on Creep and Stress Relaxation in a Beach Sand. [Thesis]. The Catholic University of America; 2016. Available from: http://hdl.handle.net/1961/cuislandora:30412

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

University of California – Irvine

22. Bober, David Boyd. Local Crystallographic Orientation Correlation Measurements Connecting the Processing and Properties of Face-Centered Cubic Metals.

Degree: Mechanical and Aerospace Engineering, 2017, University of California – Irvine

URL: http://www.escholarship.org/uc/item/77n733zz

► One of the important characteristics of crystalline microstructures is how the crystal orientation changes in space, often abruptly to form grain boundaries. Quantifying crystalline microstructure… (more)

▼ One of the important characteristics of crystalline microstructures is how the crystal orientation changes in space, often abruptly to form grain boundaries. Quantifying crystalline microstructure can be accomplished in many ways, ranging from measurements of grain size, to long range network analyses. For example, studies of how the density of grain boundaries affects strength have led to the discovery of both the Hall-Petch relation and its breakdown in nanocrystalline metals. In another case, measurements of grain boundary character have been central to the success of grain boundary engineering in improving corrosion resistance. Where the first field focuses on the quantity of grain boundaries, the second emphasizes their qualities. This sort of analytical division can be very productive because it defines focused research problems, but it also prescribes limits around the possible findings. This thesis bridges some of these inevitable gaps by applying more expansive local orientation correlation metrics to situations where they were not, or could not, be used in the past. Starting with the analytically simplest case, we measured the types of grain boundaries found in nanocrystalline metals prepared by different processing routines. This is of special interest because the extreme density of grain boundaries in nanocrystalline metals exaggerates the importance of their character. Despite its importance, practical limits on microscopy previously prevented most prior research from analyzing boundary character. The development of the grain boundary character distributions have been examined to provide insight into the mechanisms responsible for their formation. Next, we use longer range metrics to unravel how the complicated topology of grain boundary engineered microstructures is formed. Studying the grain boundary network topology of these materials helps to rationalize their processing and clarify several prior studies that relied on two-point metrics. Similar grain boundary engineered materials will then be used to explore how boundary type affects grain size strengthening. The result is a new measure of how much twin boundaries contribute to yield strength, which is important to understanding the strength of advanced materials with high twin fractions. The next chapter describes a thermomechanical method for grain boundary engineering nanocrystalline metals, where conventional techniques cannot be applied. Grain boundary network measurements of these materials are then applied to understand the mechanisms at work, revealing new information about the response of nanocrystalline metals to cyclic deformation. This has value for developing new processing methods and understanding changes that may occur during service. In each section, new insights are gained by applying different local orientation correlations than have been typical in prior inquiries.

Subjects/Keywords: Materials Science; Grain Boundaries; Grain Boundary Engineering; Grain Size Strengthening; Hall-Petch; Nanocrystalline; Twin Related Domain

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APA (6^th Edition):

Bober, D. B. (2017). Local Crystallographic Orientation Correlation Measurements Connecting the Processing and Properties of Face-Centered Cubic Metals. (Thesis). University of California – Irvine. Retrieved from http://www.escholarship.org/uc/item/77n733zz

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):

Bober, David Boyd. “Local Crystallographic Orientation Correlation Measurements Connecting the Processing and Properties of Face-Centered Cubic Metals.” 2017. Thesis, University of California – Irvine. Accessed December 10, 2019. http://www.escholarship.org/uc/item/77n733zz.

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

MLA Handbook (7^th Edition):

Bober, David Boyd. “Local Crystallographic Orientation Correlation Measurements Connecting the Processing and Properties of Face-Centered Cubic Metals.” 2017. Web. 10 Dec 2019.

Vancouver:

Bober DB. Local Crystallographic Orientation Correlation Measurements Connecting the Processing and Properties of Face-Centered Cubic Metals. [Internet] [Thesis]. University of California – Irvine; 2017. [cited 2019 Dec 10]. Available from: http://www.escholarship.org/uc/item/77n733zz.

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

Council of Science Editors:

Bober DB. Local Crystallographic Orientation Correlation Measurements Connecting the Processing and Properties of Face-Centered Cubic Metals. [Thesis]. University of California – Irvine; 2017. Available from: http://www.escholarship.org/uc/item/77n733zz

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

University of California – San Diego

23. Karandikar, Keyur Kashinath. Particle size/ grain size correlation and mechanical properties of spark plasma sintered 8Y-ZrO2, MgAl2O4, and Al2O3 based composites.

Degree: Engineering Sciences (Mechanical Engineering), 2018, University of California – San Diego

URL: http://www.escholarship.org/uc/item/91w0602k

► The primary goal of this dissertation is to obtain relationship between the two fundamental ceramic processing parameters of particle size and grain size distribution in… (more)

▼ The primary goal of this dissertation is to obtain relationship between the two fundamental ceramic processing parameters of particle size and grain size distribution in order to describe grain growth in ceramic oxides. Commercial powders of cubic zirconia (8Y-ZrO2), Spinel (MgAl2O4), and Alumina (Al2O3) were characterized for particle sizes by using dynamic light scattering. Agglomeration of powder particles was avoided using surface chemistry and planetary ball milling. Lower average sizes by as much as 50% along with narrower distribution were obtained as compared to the as-received information. Using the advanced technique of Spark plasma sintering highly dense fine-grained commercial ceramic oxides were fabricated grain sizes varying from 150 nm to >10 µm. Average grain size and size ratio calculated using powder particle sizes were used to empirically model grain growth tendencies among ceramic oxides at different sintering temperatures (950-1300℃). Activation energy of grain growth was also calculated for all the sintered composites. Spinel sintered composites exhibited slowest grain growth (range of grain size = 1.7-2.3 µm) amongst the single-phase ceramics while α-Alumina specimens exhibited grains in the range of 10.5-16 µm. For multiphase ceramics, 8Y-ZrO2/Al2O3 exhibited uniform grain size compared to spinel-based binary composites while the novel three-phase composite were also studied. It was concluded that multiphase composites exhibit limited grain growth tendency, as indicated by a 10x smaller size ratio when compared to single phase composites. For each ceramic oxide, sintering experiments were performed using powders with two different particle sizes (~100 and ~200 nm). Results indicate that larger-sized powders result in slower grain growth but eventually achieve higher grain size at temperatures >1200°C.An extensive analysis of hardness properties was analyzed by plotting Hall-Petch relationship for the sintered single/multiphase ceramic oxides. A strong correlation of hardness-grain size relationship was observed for single phase ceramic oxides and ternary composite (R2~0.8). On the other hand, fracture toughness values for most of the ceramic oxide samples sintered contained a scatter of results for microstructures with different grain sizes; thereby no correlation was obtained. Fractal micrography study of sintered single/multiphase composites highlighted the presence of primary inter-granular/trans-granular or mix modes of failure. The effects of different heating rates on the microstructure and sintering kinetics via master sintering curves of single, binary and ternary phase composites were also studied

Subjects/Keywords: Materials Science; Dynamic light scattering; Fractal micrography; Grain size; Microhardness; Particle size; Spark plasma Sintering

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

APA (6^th Edition):

Karandikar, K. K. (2018). Particle size/ grain size correlation and mechanical properties of spark plasma sintered 8Y-ZrO2, MgAl2O4, and Al2O3 based composites. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/91w0602k

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):

Karandikar, Keyur Kashinath. “Particle size/ grain size correlation and mechanical properties of spark plasma sintered 8Y-ZrO2, MgAl2O4, and Al2O3 based composites.” 2018. Thesis, University of California – San Diego. Accessed December 10, 2019. http://www.escholarship.org/uc/item/91w0602k.

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

MLA Handbook (7^th Edition):

Karandikar, Keyur Kashinath. “Particle size/ grain size correlation and mechanical properties of spark plasma sintered 8Y-ZrO2, MgAl2O4, and Al2O3 based composites.” 2018. Web. 10 Dec 2019.

Vancouver:

Karandikar KK. Particle size/ grain size correlation and mechanical properties of spark plasma sintered 8Y-ZrO2, MgAl2O4, and Al2O3 based composites. [Internet] [Thesis]. University of California – San Diego; 2018. [cited 2019 Dec 10]. Available from: http://www.escholarship.org/uc/item/91w0602k.

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

Council of Science Editors:

Karandikar KK. Particle size/ grain size correlation and mechanical properties of spark plasma sintered 8Y-ZrO2, MgAl2O4, and Al2O3 based composites. [Thesis]. University of California – San Diego; 2018. Available from: http://www.escholarship.org/uc/item/91w0602k

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

Victoria University of Wellington

24. Adams, John Edward. Empirical Determination of Sieve Size Statistics from Grain Measurement.

Degree: 1974, Victoria University of Wellington

URL: http://hdl.handle.net/10063/1720

► Relationships between sieve grain size and thin section grain size have been determined empirically from the study of 72 artificially created sendstone samples. Modern sands… (more)

Subjects/Keywords: Grain-size; Thin-section; Conversion

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APA (6^th Edition):

Adams, J. E. (1974). Empirical Determination of Sieve Size Statistics from Grain Measurement. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/1720

Chicago Manual of Style (16^th Edition):

Adams, John Edward. “Empirical Determination of Sieve Size Statistics from Grain Measurement.” 1974. Masters Thesis, Victoria University of Wellington. Accessed December 10, 2019. http://hdl.handle.net/10063/1720.

MLA Handbook (7^th Edition):

Adams, John Edward. “Empirical Determination of Sieve Size Statistics from Grain Measurement.” 1974. Web. 10 Dec 2019.

Vancouver:

Adams JE. Empirical Determination of Sieve Size Statistics from Grain Measurement. [Internet] [Masters thesis]. Victoria University of Wellington; 1974. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/10063/1720.

Council of Science Editors:

Adams JE. Empirical Determination of Sieve Size Statistics from Grain Measurement. [Masters Thesis]. Victoria University of Wellington; 1974. Available from: http://hdl.handle.net/10063/1720

Universiteit Utrecht

25. Winkels, T.G. Sorting and provenance patterns in the Usumacinta‐Grijalva delta, Mexico.

Degree: 2014, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/297330

► The Usumacinta‐Grijalva delta is located in southern Mexico and is characterized by the largest beach ridge plain in the world, with well over 500 consecutive… (more)

Subjects/Keywords: Beach ridges; Grain size analysis; Magnetic Susceptibility; End‐members

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APA (6^th Edition):

Winkels, T. G. (2014). Sorting and provenance patterns in the Usumacinta‐Grijalva delta, Mexico. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/297330

Chicago Manual of Style (16^th Edition):

Winkels, T G. “Sorting and provenance patterns in the Usumacinta‐Grijalva delta, Mexico.” 2014. Masters Thesis, Universiteit Utrecht. Accessed December 10, 2019. http://dspace.library.uu.nl:8080/handle/1874/297330.

MLA Handbook (7^th Edition):

Winkels, T G. “Sorting and provenance patterns in the Usumacinta‐Grijalva delta, Mexico.” 2014. Web. 10 Dec 2019.

Vancouver:

Winkels TG. Sorting and provenance patterns in the Usumacinta‐Grijalva delta, Mexico. [Internet] [Masters thesis]. Universiteit Utrecht; 2014. [cited 2019 Dec 10]. Available from: http://dspace.library.uu.nl:8080/handle/1874/297330.

Council of Science Editors:

Winkels TG. Sorting and provenance patterns in the Usumacinta‐Grijalva delta, Mexico. [Masters Thesis]. Universiteit Utrecht; 2014. Available from: http://dspace.library.uu.nl:8080/handle/1874/297330

Wright State University

26. Mastera, Lawrence. Estimating Permeability from the Grain-Size Distributions of Natural Sediment.

Degree: MS, Earth and Environmental Sciences, 2010, Wright State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=wright1278618761

► Permeability, k, can be estimated using the Kozeny-Carman equation, given a grain-size distribution with any number of grain-size categories and the porosity of a sediment.… (more)

Subjects/Keywords: Geology; Permeability; Grain-Size Distributions; Estimating; Kozeny-Carman; Sediment

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

APA (6^th Edition):

Mastera, L. (2010). Estimating Permeability from the Grain-Size Distributions of Natural Sediment. (Masters Thesis). Wright State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=wright1278618761

Chicago Manual of Style (16^th Edition):

Mastera, Lawrence. “Estimating Permeability from the Grain-Size Distributions of Natural Sediment.” 2010. Masters Thesis, Wright State University. Accessed December 10, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1278618761.

MLA Handbook (7^th Edition):

Mastera, Lawrence. “Estimating Permeability from the Grain-Size Distributions of Natural Sediment.” 2010. Web. 10 Dec 2019.

Vancouver:

Mastera L. Estimating Permeability from the Grain-Size Distributions of Natural Sediment. [Internet] [Masters thesis]. Wright State University; 2010. [cited 2019 Dec 10]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=wright1278618761.

Council of Science Editors:

Mastera L. Estimating Permeability from the Grain-Size Distributions of Natural Sediment. [Masters Thesis]. Wright State University; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=wright1278618761

NSYSU

27. Lin, Chih-Yung. Variability in Spatial Distribution of Physical and Geochemical Characteristics of Surface Sediments in Taiwan Strait.

Degree: Master, Department of Oceanography, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-150428

► The Taiwan Strait, which connects two mainly marginal seas of the Asia, the East China Sea and the South China Sea, is not only the… (more)

▼ The Taiwan Strait, which connects two mainly marginal seas of the Asia, the East China Sea and the South China Sea, is not only the sink of riverine sediments from Taiwan Island and Mainland China, but also a possible transporting route of sediments between two marginal seas. Taiwan Strait is distinguished with Taiwan Shoal, Chan-Yuen Rise, Penghu Channel, Kuan-Yin Depression, and Wu-Chiu Depression, which makes it become a complicated area for sediment deposition. In published researches, we have known that part of the sediments come from the Pearl River will transport north toward the Taiwan Strait by SCS Warm Current. However, the shallow Taiwan Shoal with merely 20-40 meters in water depth may block the sediment transportation leading to the absence of modern sediments to be reached and deposited. Therefore, the relict sediments left since last glacial period because of the fallen sea-level are main composition over the shoal. Sediments contribute from Taiwan Island via the Kaoping River principally enter the SCS basin through Kaoping Canyon. Otherwise, some suspended particles might be transported northward through Penghu Channel carried by Kuroshio branch flow. As a result, Zhuoshui River discharged sediments might precipitate at Chan-Yuen Rise and Kuan-Yin Depression. Furthermore, some studies also suggest that part of the fine-grained sediments discharging from northeastern Taiwan Strait can reach the southern Okinawa Trough. Most of Yangtze River discharged sediments will deposit firstly at the delta area, then the others will flow southward along China coast then form the mud belt in central Taiwan Strait which mixing with fine-grained sediments by Taiwan mountainous rivers. ãOur results and published studies refer that grain size distribution curves and mean sizes can be used to indicate sediment transport pathway and the sources, and the two major factor affecting sediment distribution are ocean current and sediment sources. However, the spatial distribution and geochemical characteristics of surface sediments in the Taiwan Strait are rarely known. In this study, organic components, major and trace elements of surface sediments collecting from the Taiwan Strait are analyzed for tracing sediment sources and distinguishing transporting routes. TOC distribution shows the same as mean grain-size in this study, which means TOC is also influence by current system. Considering element at river mouth has low correlation with mother rock, itâs not indicative for the difference between river mouths. Therefore, we use element ratio normalized by Al content to indicate terrestrial contribution. Our results shown that Cs/AlãNi/AlãSn/AlãTi/AlãBa/AlãK/AlãRb/AlãTl/Al are good indicator for terrestrial sediment transportation by current system. In element ratioâs distribution, terrestrial sediments from Pearl river is hard to go throught Taiwan Shoal. On the other hand, sediments from Yangtze river canât get throught Taiwan Shoal, either. Advisors/Committee Members: Pai-Sen Yu (chair), Yuan-pin Chang (committee member), James T. Liu (chair), Chih-chieh Su (chair).

Subjects/Keywords: Grain Size; Taiwan Strait; TOC; Elements; Element Ratio; Surface Sediment

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

APA (6^th Edition):

Lin, C. (2016). Variability in Spatial Distribution of Physical and Geochemical Characteristics of Surface Sediments in Taiwan Strait. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-150428

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):

Lin, Chih-Yung. “Variability in Spatial Distribution of Physical and Geochemical Characteristics of Surface Sediments in Taiwan Strait.” 2016. Thesis, NSYSU. Accessed December 10, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-150428.

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

MLA Handbook (7^th Edition):

Lin, Chih-Yung. “Variability in Spatial Distribution of Physical and Geochemical Characteristics of Surface Sediments in Taiwan Strait.” 2016. Web. 10 Dec 2019.

Vancouver:

Lin C. Variability in Spatial Distribution of Physical and Geochemical Characteristics of Surface Sediments in Taiwan Strait. [Internet] [Thesis]. NSYSU; 2016. [cited 2019 Dec 10]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-150428.

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

Council of Science Editors:

Lin C. Variability in Spatial Distribution of Physical and Geochemical Characteristics of Surface Sediments in Taiwan Strait. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-150428

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

NSYSU

28. Tsai, Meng-Shu. The effect of grain size on the formation of deformation twins in AZ31 alloy.

Degree: Master, Materials and Optoelectronic Science, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0911112-150549

► Compression tests along the rolling and normal direction of AZ31B plate materials under 10 s strain rate were performed at room temperature to understand the… (more)

Subjects/Keywords: Magnesium alloys; Grain size; Twin band; Compression twin; Tension twin

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

APA (6^th Edition):

Tsai, M. (2012). The effect of grain size on the formation of deformation twins in AZ31 alloy. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0911112-150549

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):

Tsai, Meng-Shu. “The effect of grain size on the formation of deformation twins in AZ31 alloy.” 2012. Thesis, NSYSU. Accessed December 10, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0911112-150549.

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

MLA Handbook (7^th Edition):

Tsai, Meng-Shu. “The effect of grain size on the formation of deformation twins in AZ31 alloy.” 2012. Web. 10 Dec 2019.

Vancouver:

Tsai M. The effect of grain size on the formation of deformation twins in AZ31 alloy. [Internet] [Thesis]. NSYSU; 2012. [cited 2019 Dec 10]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0911112-150549.

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

Council of Science Editors:

Tsai M. The effect of grain size on the formation of deformation twins in AZ31 alloy. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0911112-150549

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

NSYSU

29. Tang, Teng-yen. Mechanical Properties of electrodeposited Ni and Ni-Co alloys having bimodal distribution of grain size.

Degree: Master, Materials and Optoelectronic Science, 2011, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-163412

► The strength of polycrystalline materials increases with decreasing grain size. The increase of strength is usually associated with deterioration of ductility, especially for materials having… (more)

Subjects/Keywords: ductility; mechanical properties; bimodal grain size distribution; Ni-Co alloy; electrodeposition

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APA (6^th Edition):

Tang, T. (2011). Mechanical Properties of electrodeposited Ni and Ni-Co alloys having bimodal distribution of grain size. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-163412

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):

Tang, Teng-yen. “Mechanical Properties of electrodeposited Ni and Ni-Co alloys having bimodal distribution of grain size.” 2011. Thesis, NSYSU. Accessed December 10, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-163412.

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

MLA Handbook (7^th Edition):

Tang, Teng-yen. “Mechanical Properties of electrodeposited Ni and Ni-Co alloys having bimodal distribution of grain size.” 2011. Web. 10 Dec 2019.

Vancouver:

Tang T. Mechanical Properties of electrodeposited Ni and Ni-Co alloys having bimodal distribution of grain size. [Internet] [Thesis]. NSYSU; 2011. [cited 2019 Dec 10]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-163412.

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

Council of Science Editors:

Tang T. Mechanical Properties of electrodeposited Ni and Ni-Co alloys having bimodal distribution of grain size. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-163412

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

University of Hawaii – Manoa

30. Kastl, Brian Christopher. Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand.

Degree: 2016, University of Hawaii – Manoa

URL: http://hdl.handle.net/10125/101661

►

M.S. University of Hawaii at Manoa 2010.

Spatiotemporal variability in the deposits of lahars offers insights into the characteristics and fluid dynamics of these sediment-laden… (more)

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M.S. University of Hawaii at Manoa 2010.

Spatiotemporal variability in the deposits of lahars offers insights into the characteristics and fluid dynamics of these sediment-laden flows. The 18 March 2007 Crater Lake break-out lahar at Mount Ruapehu, New Zealand, emplaced 1.4 million m3 of both massive and bedded deposits over the first 47.4 km of its flow path. Traditionally these would be classified as debris flow and hyperconcentrated flow deposits, respectively. Grain size and componentry analyses were performed on samples collected over the first 11 km of the flow path, for both the 2007 lahar itself and pre-existing deposits that contributed sediment to the lahar. Altered landslide material contributed a major proportion of sediment to the flow 400 – 800 m from the source of the lahar, and was used as a marker to understand downstream evolution of flow characteristics. Variations in the proportions of this altered landslide material with grain size and distance suggest that abrasion and cataclasis occurred during transport. Furthermore, altered landslide clasts are more rounded than all other sediment types, demonstrating greater susceptibility of the former to mechanical breakdown, which influences flow rheology. Ten of sixteen samples of the 2007 lahar deposit exhibit bimodal grainsize distributions. Primary modes coarsen with depth at locations where samples could be collected at multiple depths, while distinctive weak sand-sized (1 – 2Φ) secondary modes become more pronounced with depth in the deposit. Sand-sized primary modes exist 7 km from source, in deposits near the head of a side channel that captured the upper portion of the lahar after it overtopped a drainage divide. We put forth a model for deposition in the first 11 km reach by the waning phase of a lahar with a concentrated basal flow and a strong vertical sediment concentration gradient. As the sediment concentration of the flow reached its peak, the basal region generated sand grains through abrasion and cataclasis during intergranular collisions. This sand was also transported in the upper dilute transport region of the current and is preserved as secondary modes in deposits produced by rapid vertical accretion. As the sediment concentration of the flow decreased over time, turbulence increased in the basal flow, causing selective, incremental deposition of sediment now depleted in sand, and ultimately finer-grained, stratified deposits. Our results support the concept that deposit characteristics are highly dependent on the stratification of the flow and the depositional regime, both of which evolve over time and are controlled by the sediment concentration and flow competence.

Subjects/Keywords: lahar; deposition; grain size distribution; stratification; basal flow

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APA (6^th Edition):

Kastl, B. C. (2016). Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand. (Thesis). University of Hawaii – Manoa. Retrieved from http://hdl.handle.net/10125/101661

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):

Kastl, Brian Christopher. “Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand.” 2016. Thesis, University of Hawaii – Manoa. Accessed December 10, 2019. http://hdl.handle.net/10125/101661.

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

MLA Handbook (7^th Edition):

Kastl, Brian Christopher. “Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand.” 2016. Web. 10 Dec 2019.

Vancouver:

Kastl BC. Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand. [Internet] [Thesis]. University of Hawaii – Manoa; 2016. [cited 2019 Dec 10]. Available from: http://hdl.handle.net/10125/101661.

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

Council of Science Editors:

Kastl BC. Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand. [Thesis]. University of Hawaii – Manoa; 2016. Available from: http://hdl.handle.net/10125/101661

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

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