subject:(Spherulitic growth rate of cyclic polymer)

Georgia Tech

1. Nam, Sunghyun. Dynamics of Cyclic and Linear Poly(oxyethylene) and Threading Conformation in Their Blends.

Degree: PhD, Textile and Fiber Engineering, 2006, Georgia Tech

► Chemically identical but topologically different cyclic and linear polymers not only result in marked differences in dynamics, but also lead to unique transport properties of… (more)

Subjects/Keywords: Spherulitic growth rate of cyclic polymer; Blends of cyclic and linear polymers; Topological effect on the dynamics; Self-diffusion coefficient; Diffusion of threaded chains; Polymers Testing; Polymers Viscosity

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APA (6^th Edition):

Nam, S. (2006). Dynamics of Cyclic and Linear Poly(oxyethylene) and Threading Conformation in Their Blends. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/14135

Chicago Manual of Style (16^th Edition):

Nam, Sunghyun. “Dynamics of Cyclic and Linear Poly(oxyethylene) and Threading Conformation in Their Blends.” 2006. Doctoral Dissertation, Georgia Tech. Accessed April 16, 2021. http://hdl.handle.net/1853/14135.

MLA Handbook (7^th Edition):

Nam, Sunghyun. “Dynamics of Cyclic and Linear Poly(oxyethylene) and Threading Conformation in Their Blends.” 2006. Web. 16 Apr 2021.

Vancouver:

Nam S. Dynamics of Cyclic and Linear Poly(oxyethylene) and Threading Conformation in Their Blends. [Internet] [Doctoral dissertation]. Georgia Tech; 2006. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/1853/14135.

Council of Science Editors:

Nam S. Dynamics of Cyclic and Linear Poly(oxyethylene) and Threading Conformation in Their Blends. [Doctoral Dissertation]. Georgia Tech; 2006. Available from: http://hdl.handle.net/1853/14135

Curtin University of Technology

2. Loh, Beng Heng. Behaviour of railway track subgrade under cyclic loading .

Degree: 2011, Curtin University of Technology

URL: http://hdl.handle.net/20.500.11937/2100

► The railway track foundation of fine-grained soil subgrade, under repeated loading of cyclic nature, can gradually build up excess pore pressure and result in progressive… (more)

▼ The railway track foundation of fine-grained soil subgrade, under repeated loading of cyclic nature, can gradually build up excess pore pressure and result in progressive shear failure at a stress level much lower than the monotonic loading strength of the soil. It is widely accepted that a threshold stress exists, above which, the induced stress generates large shear deformation and; below which, the soil deformation become stabilized irrespective of the number of loading applications. Previous studies into the behaviour of fine-grained subgrade under cyclic loading had mainly involved slow loading rate. The advance in transportation technology and the required efficiency of transporting goods and commuting passengers demands higher train speed and heavier loads. Consequently, better understanding on the behaviour of fine-grained subgrade under higher rate of loading (i.e. cyclic frequency) will be necessary as it influences the build-up of excess pore water pressure and strain accumulation of subgrade soil, hence the stability of the railway track. In addition, current design approaches to the railway tracks foundation of fine-grained subgrade have largely been empirical or semi-empirical unique to a range of geological characteristic, operating and traffic condition. The rationalization and reformulation of design approach may be required if general design means will to be devised.In this research, an in-depth study of undrained triaxial testing on the behaviour of a typical fine-grained reconstituted kaolinite clay soil, simulating the characteristic subgrade responses exhibit under the passing axles / wheel load of the contemporary train speed was performed and discussed. Four series of both static and cyclic undrained triaxial test were conducted. The static undrained triaxial test provides the behavioural benchmark and a prior indication on the maximum stress level from which the cyclic stress level can be apportioned. The cyclic undrained triaxial test simulates the behaviour of clay subgrade under a large number of passing axles/wheel load. The results of the testing described and characterized the stress / strain behaviour for saturated kaolinite clay of various consolidated state and stress history. In particular, it described the general concept of cyclic stress equilibrium state and resilient state, and detailed the characteristic pattern of the line of cyclic stress equilibrium state which dictates the way in identifying the threshold stress (or critical level of cyclic stress). The study demonstrated that, using effective stress analysis, the threshold stress can be obtained for clay under high cyclic loading rate. In conjunction with the stress response, the deformation and resilient characteristics of various series of cyclic undrained triaxial tests carried out on the saturated clay was described. Apart from highlighting and confirming the influence of consolidated state and stress history on the threshold stress and deformation characteristics, influence of the cyclic loading frequency simulating…

Subjects/Keywords: higher rate of loading; cyclic loading; cyclic stress equilibrium state surface CSESS; critical state soil mechanics; railway track subgrade; railway track foundation

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APA (6^th Edition):

Loh, B. H. (2011). Behaviour of railway track subgrade under cyclic loading . (Thesis). Curtin University of Technology. Retrieved from http://hdl.handle.net/20.500.11937/2100

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):

Loh, Beng Heng. “Behaviour of railway track subgrade under cyclic loading .” 2011. Thesis, Curtin University of Technology. Accessed April 16, 2021. http://hdl.handle.net/20.500.11937/2100.

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

MLA Handbook (7^th Edition):

Loh, Beng Heng. “Behaviour of railway track subgrade under cyclic loading .” 2011. Web. 16 Apr 2021.

Vancouver:

Loh BH. Behaviour of railway track subgrade under cyclic loading . [Internet] [Thesis]. Curtin University of Technology; 2011. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/20.500.11937/2100.

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

Council of Science Editors:

Loh BH. Behaviour of railway track subgrade under cyclic loading . [Thesis]. Curtin University of Technology; 2011. Available from: http://hdl.handle.net/20.500.11937/2100

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

Florida Atlantic University

3. Danso, Charles K. A. Two Essays on An Examination of Life Cycle Effects and Firm Policies.

Degree: 2018, Florida Atlantic University

URL: http://fau.digital.flvc.org/islandora/object/fau:40713

►

In Essay 1, I investigate the impact of corporate life cycle dynamics on the observed negative association between asset growth and stock returns in the… (more)

▼

In Essay 1, I investigate the impact of corporate life cycle dynamics on the observed negative association between asset growth and stock returns in the crosssection. I find that the asset growth effect on average exists across some life cycle stages measured using cohorts. However, controlling for certain variables associated with the theoretical explanations, I find there is no relation between asset growth and returns. I argue this evidence is consistent with an agency-based explanation of the asset growth effect. Furthermore, a decomposition of the drivers of the effect shows that different components of assets (i.e. working capital and financing) drive asset growth effect at different life cycle stages. From a decomposition analyses, results show that in the youngest firms (cohort 1), asset growth effect is mostly driven by both operating liability and stock financing on one side (financing) and noncash current assets, PPE, and growth in other assets (for working capital) while cohort 3’s drivers appear to be stock issuances, together with noncash current assets, which I conclude offer further support for agency issues. In Essay 2, I examine how firms’ life cycle affect insider trading behavior, profits surrounding trades, price informativeness, and financing constraints. I argue that if firms’ policies and characteristics change over time as shown in lifecycle literature, then from firm characteristics that motivate insider-trading behavior, one should observe some differences across varying life cycle stages measured using age cohorts. I find that insiders are net sellers at all life cycle stages of a firm. Furthermore, insiders tend to trade more in younger firms than in older firms even though they have fewer numbers of insiders trading. Trading characteristics are generally statistically significant across cohorts. Overall, insiders appear to predict the correct direction for positive wealth generation when trading. Specifically, at all lifecycle stages, they appear to sell before negative CARs, and buy during periods associated with negative CARs that lead to positive CARs days after insider transactions. The findings on price informativeness suggest that in general insider purchases enhance price informativeness for firms at different lifecycle stages, however, this finding holds only for cohort 4 (oldest firms) in the case of insider sales. The implication of this finding is that regulation should be more lax towards purchases as compared to sales for firms, except for sales in firms that are older. Lastly, insider trades are linked with positive investment-cash flow sensitivities for both insider purchases and insider sales, which generally increase monotonically across cohorts. This finding is robust to using GMM approach.

2018

Degree granted: Dissertation (Ph.D.) – Florida Atlantic University, 2018.

Collection: FAU

Advisors/Committee Members: Garcia-Feijoo, Luis (Thesis advisor), Pennathur, Anita K. (Thesis advisor), Florida Atlantic University (Degree grantor), College of Business, Department of Finance.

Subjects/Keywords: Corporations – Growth.; Stocks – Rate of return.; Insider trading in securities.

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APA (6^th Edition):

Danso, C. K. A. (2018). Two Essays on An Examination of Life Cycle Effects and Firm Policies. (Thesis). Florida Atlantic University. Retrieved from http://fau.digital.flvc.org/islandora/object/fau:40713

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):

Danso, Charles K A. “Two Essays on An Examination of Life Cycle Effects and Firm Policies.” 2018. Thesis, Florida Atlantic University. Accessed April 16, 2021. http://fau.digital.flvc.org/islandora/object/fau:40713.

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

MLA Handbook (7^th Edition):

Danso, Charles K A. “Two Essays on An Examination of Life Cycle Effects and Firm Policies.” 2018. Web. 16 Apr 2021.

Vancouver:

Danso CKA. Two Essays on An Examination of Life Cycle Effects and Firm Policies. [Internet] [Thesis]. Florida Atlantic University; 2018. [cited 2021 Apr 16]. Available from: http://fau.digital.flvc.org/islandora/object/fau:40713.

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

Council of Science Editors:

Danso CKA. Two Essays on An Examination of Life Cycle Effects and Firm Policies. [Thesis]. Florida Atlantic University; 2018. Available from: http://fau.digital.flvc.org/islandora/object/fau:40713

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

Delft University of Technology

4. Usman, M. (author). Effect of temperature on fatigue crack growth in adhesive bonds.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:3ecee314-309b-4254-ab0f-34be7da90d9d

►

In this research effect of temperature on the disbond growth rate due to fatigue load in adhesive bonds is investigated. Concept of release of strain… (more)

Subjects/Keywords: fatigue crack growth rate; adhesive bonds; energy method; effect of temperature

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APA (6^th Edition):

Usman, M. (. (2016). Effect of temperature on fatigue crack growth in adhesive bonds. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:3ecee314-309b-4254-ab0f-34be7da90d9d

Chicago Manual of Style (16^th Edition):

Usman, M (author). “Effect of temperature on fatigue crack growth in adhesive bonds.” 2016. Masters Thesis, Delft University of Technology. Accessed April 16, 2021. http://resolver.tudelft.nl/uuid:3ecee314-309b-4254-ab0f-34be7da90d9d.

MLA Handbook (7^th Edition):

Usman, M (author). “Effect of temperature on fatigue crack growth in adhesive bonds.” 2016. Web. 16 Apr 2021.

Vancouver:

Usman M(. Effect of temperature on fatigue crack growth in adhesive bonds. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Apr 16]. Available from: http://resolver.tudelft.nl/uuid:3ecee314-309b-4254-ab0f-34be7da90d9d.

Council of Science Editors:

Usman M(. Effect of temperature on fatigue crack growth in adhesive bonds. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:3ecee314-309b-4254-ab0f-34be7da90d9d

University of Illinois – Urbana-Champaign

5. Schunke, Emily Danielle. Effect of sire line and rate of gain on pork quality.

Degree: MS, Animal Sciences, 2020, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/107901

► Terminal sire selection is a critical factor in modern day swine production as it has the ability to influence characteristics that affect the financial stability… (more)

▼ Terminal sire selection is a critical factor in modern day swine production as it has the ability to influence characteristics that affect the financial stability of the producer and packer while concomitantly influencing the eating experience of the consumer. Pietrain pigs are often utilized in swine production as they increase feed efficiency and improve both carcass and lean yields whereas, Duroc pigs are known for fast growth and improved overall meat quality. Three experiments were conducted to evaluate the effects of Duroc and Pietrain sire lines on growth performance, carcass cutability, and early and aged pork quality. For these three experiments, the MIXED procedure of SAS was used to evaluate the fixed effects of sire line, sex, and their interactions on pork quality and considered significant at P<0.05. In the first study, an American purebred (AP) Pietrain terminal sire line (n=135) was selected for feed efficiency and lean tissue accretion while a European crossbred, 25% Pietrain, (EC) terminal sire line (n=114) was chosen for lean tissue accretion and carcass merit. As expected, EC sired pigs had an increased (P=0.03) standardized fat free lean (FFL) by 1.63% units. American Pietrain sired pigs had darker loins and chops as early ventral visual color was increased (0.46 units, P<0.001), early ventral L* was decreased (0.89 units, P=0.05), early chop visual color was increased (0.14, P=0.03), and early chop L* was decreased (1.18, P=0.03). Overall, EC sired pigs were leaner, while AP sired pigs had darker (early) loins and chops. In a second experiment, a Duroc terminal sire line (n=160), selected for premium meat quality based programs (MQ), was compared to a Duroc terminal sire line (n=144) that was selected for competitive growth and performance (GP). Overall (d0-98), GP sired pigs had increased G:F (0.01 kg/d, P=0.03), while MQ sired pigs had darker, heavier marbled loins as early ventral L* was decreased (1.67, P=0.01) and early ventral visual marbling was increased (0.28, P<0.01). Aged ventral visual marbling was increased (0.28, P<0.001) in MQ sired pigs. Belly thickness and flop were increased (P<0.01) by 0.19 cm and 3.5 cm, respectively in MQ sired pigs. Ultimately, GP sired pigs had increased G:F, but MQ sired pigs had improved pork quality. In a third experiment, pigs were sourced from 2 different sire lines of Duroc ancestry. Red (n=160) and Green (n=160) represented either a P26 Duroc sire line or a competitor Duroc sire line. Overall, Green sired pigs had increased average daily gain (ADG; 0.07, kg/d, P<0.001), while Red sired pigs had increased FFL (1.31%, P<0.01). Loin marbling scores were higher (P≤ 0.01) in both the aged ventral (0.48) and chop (0.36) of Green sired pigs. Additionally, Green sired pigs had thicker and firmer bellies as indicated by increased (P<0.001) belly thickness (3.97 vs. 3.59) and belly flop (19.64 vs. 15.63). Ultimately, Red sired pigs were leaner leading to greater carcass merit, but Green sired pigs had increased ADG and improved pork quality characteristics.… Advisors/Committee Members: Dilger, Anna C (advisor).

Subjects/Keywords: sire line; rate of gain; growth performance; pork quality

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

APA (6^th Edition):

Schunke, E. D. (2020). Effect of sire line and rate of gain on pork quality. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/107901

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):

Schunke, Emily Danielle. “Effect of sire line and rate of gain on pork quality.” 2020. Thesis, University of Illinois – Urbana-Champaign. Accessed April 16, 2021. http://hdl.handle.net/2142/107901.

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

MLA Handbook (7^th Edition):

Schunke, Emily Danielle. “Effect of sire line and rate of gain on pork quality.” 2020. Web. 16 Apr 2021.

Vancouver:

Schunke ED. Effect of sire line and rate of gain on pork quality. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2020. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/2142/107901.

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

Council of Science Editors:

Schunke ED. Effect of sire line and rate of gain on pork quality. [Thesis]. University of Illinois – Urbana-Champaign; 2020. Available from: http://hdl.handle.net/2142/107901

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

University of Georgia

6. Byron, Sharri Cecile. Three essays on financing public spending in a small open economy.

Degree: 2014, University of Georgia

URL: http://hdl.handle.net/10724/26018

► While foreign aid transfers, in theory, serve to relieve the national savings constraint as government’s ﬁnance their development agenda, the empirical evidence of its effectiveness… (more)

▼ While foreign aid transfers, in theory, serve to relieve the national savings constraint as government’s ﬁnance their development agenda, the empirical evidence of its effectiveness is mixed. In fact, from the perspective of the donor community, the performance of foreign aid has been overwhelmingly unsatisfactory. But with aid transfers expected to increase, donors intensify their efforts towards improving the delivery and monitoring of aid trans- fers. The three essays examine how foreign aid and the government’s response to those aid transfers may inﬂuence output, total consumption, debt accumulation, public and private capital accumulation, and the real exchange rate. In the ﬁrst chapter, I use a neoclassical growth model to examine how the alloca- tion of aid among public investment expenditure, public consumption expenditure and a pure transfer can generate sometimes opposing long-run effects on key outcomes such as output, consumption, private and public capital accumulation. This study is not the ﬁrst to do this. However, the paper uses a neoclassical growth model that allows technology and capital accumulation to be endogenous, but where policy variables alone inﬂuence the long-run growth rate through their inﬂuence on population growth and the technological parameters. This model does not generate the scale effects that were a source of concern and limit the usefulness of predictions from endogenous growth models. One ﬁnding is that the allocation of foreign aid to different public expenditure categories matters for the responses. Also, the results suggest that there is no scenario in which the long-run levels of public and private capital are enhanced when governments alter their public spending commitments. Building on the ﬁrst chapter, the second paper presents another neoclassical growth model, but one to examine how the real exchange rate responds to foreign aid transfers. The link between the real exchange rate and foreign aid has received attention in the recent literature as researchers try to ﬁnd possible channels through which foreign aid mitigates its own effectiveness. The result highlight foreign aid scenarios in which the real exchange rate may either appreciate or depreciate in the long-run. The depreciation occurs: (i) under low adjustment costs to either the accumulation of public or private capital and when the foreign aid ﬁnances public investment expenditure; and (ii) when the government can alter its spending commitments in response to the allocation of aid to any type of expenditure. The third paper uses panel and cross-sectional data methods to analyze data from sixty- six aid recipient countries for any effect of foreign aid transfers on the real exchange rate. The results suggest economic signiﬁcance, and highlight the depreciation effect of foreign aid inﬂows. Overall the results suggest that to the extent that donors and recipients can engage in macroeconomic management of the aid resources, countries can beneﬁt from the growth potential while at the same time avert some of the…

Subjects/Keywords: non-scale growth; level effect of foreign aid; foreign aid and real exchange rate; endogenous labor; endogenous growth; neo-classical growth

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APA (6^th Edition):

Byron, S. C. (2014). Three essays on financing public spending in a small open economy. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/26018

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):

Byron, Sharri Cecile. “Three essays on financing public spending in a small open economy.” 2014. Thesis, University of Georgia. Accessed April 16, 2021. http://hdl.handle.net/10724/26018.

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

MLA Handbook (7^th Edition):

Byron, Sharri Cecile. “Three essays on financing public spending in a small open economy.” 2014. Web. 16 Apr 2021.

Vancouver:

Byron SC. Three essays on financing public spending in a small open economy. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/10724/26018.

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

Council of Science Editors:

Byron SC. Three essays on financing public spending in a small open economy. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/26018

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

Brno University of Technology

7. Mansour, Mohamad. Zesílení kruhových sloupů při příčném cyklickém namáhání: strengthening of circular column subjected to lateral cyclic loading.

Degree: 2020, Brno University of Technology

URL: http://hdl.handle.net/11012/188168

► The presented doctoral thesis deals with the strengthening of circular concrete columns by Fibre Reinforced Polymers (FRP) wraps subjected to lateral cyclic loadings. This research… (more)

Subjects/Keywords: Vlákny vyztužený polymer – kompozitní materiál; zesílení kruhového sloupu vystaveného cyklickému zatížení; Fibre Reinforced Polymer composite materials; strengthening of circular column subjected to cyclic load.

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

APA (6^th Edition):

Mansour, M. (2020). Zesílení kruhových sloupů při příčném cyklickém namáhání: strengthening of circular column subjected to lateral cyclic loading. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/188168

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):

Mansour, Mohamad. “Zesílení kruhových sloupů při příčném cyklickém namáhání: strengthening of circular column subjected to lateral cyclic loading.” 2020. Thesis, Brno University of Technology. Accessed April 16, 2021. http://hdl.handle.net/11012/188168.

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

MLA Handbook (7^th Edition):

Mansour, Mohamad. “Zesílení kruhových sloupů při příčném cyklickém namáhání: strengthening of circular column subjected to lateral cyclic loading.” 2020. Web. 16 Apr 2021.

Vancouver:

Mansour M. Zesílení kruhových sloupů při příčném cyklickém namáhání: strengthening of circular column subjected to lateral cyclic loading. [Internet] [Thesis]. Brno University of Technology; 2020. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/11012/188168.

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

Council of Science Editors:

Mansour M. Zesílení kruhových sloupů při příčném cyklickém namáhání: strengthening of circular column subjected to lateral cyclic loading. [Thesis]. Brno University of Technology; 2020. Available from: http://hdl.handle.net/11012/188168

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

University of Texas – Austin

8. -6566-4815. Experimental studies in hydraulic fracture growth : fundamental insights and validation experiments for geomechanical models.

Degree: PhD, Petroleum Engineering, 2019, University of Texas – Austin

URL: http://dx.doi.org/10.26153/tsw/1391

► Novel experimental capabilities to study hydraulic fracturing in the laboratory are developed and utilized in this research. Fracturing experiments are conducted using two-dimensional (2-D) test… (more)

▼ Novel experimental capabilities to study hydraulic fracturing in the laboratory are developed and utilized in this research. Fracturing experiments are conducted using two-dimensional (2-D) test specimens that are made from synthetic, porous materials with well-characterized properties. Fracture growth during the experiments is captured with clear, high resolution images and subsequent image processing using Digital Image Correlation (DIC) analyses. First, we investigated the problem of a hydraulic fracture induced in a soft layer bounded by harder layers. The experiments reveal a clear tendency for induced fractures to avoid harder bounding layers. This is seen as fracture deflection or kinking away from the harder layers, fracture curving between the harder bounding layers, and fracture tilt from the maximum far-field stress direction. In addition, when a fracture is induced in a relatively thin layer, the fracture avoids the harder bounding layers by initiating and propagating parallel to the bounding interfaces. Fracture propagation parallel to the bounding layers is also observed in relatively wide layers when the far-field stress is isotropic or very low. Complex fracture trajectories are induced in layered specimens when the far-field differential stress is low or intermediate. In a second set of experiments, we used homogeneous specimens with multiple fluid injection ports. It is clearly shown that injection-induced stresses can appreciably affect hydraulic fracture trajectories and fracturing pressures. We show that induced hydraulic fractures, under our laboratory conditions, are attracted to regions of high pore pressure. Induced fractures tend to propagate towards neighboring high pore pressure injection ports. The recorded breakdown pressure in the fracturing experiments decreases significantly as the number of neighboring injectors increases. The influence of an adjacent fluid injection source on the hydraulic fracture trajectory can be minimized or suppressed when the applied far-field differential stress is relatively high. Preferential fracture growth due to changes in pore pressure in field applications as compared to our laboratory observations is also discussed. In a third set of experiments, we show that the breakdown pressure of test specimens can be reduced markedly with low injection rates, cyclic borehole pressurization, and/or constant pressure injection. This is largely related to the extent of pressurized region around the borehole caused by fluid leakoff in dry specimens and possible specimen weakening by fluid contact. The breakdown pressure can also be reduced by notching the specimen borehole when the injection fluid is allowed to flow and leak off along the borehole notch. In a fourth set of experiments, we compared fracture growth induced by a viscous liquid and a gas which are glycerin and nitrogen, respectively. The experiments show that fractures propagate through test specimens in a gradual manner when induced by glycerin at various injection rates. By contrast, nitrogen… Advisors/Committee Members: Sharma, Mukul M. (advisor), Ravi-Chandar, Krishnas (committee member), Olson, Jon E. (committee member), Prodanović, Maša (committee member), Espinoza, David N. (committee member).

Subjects/Keywords: Hydraulic fracturing; Fracturing experiments; Heterogeneity; Porous materials; Layering; Geological layers; Heterogeneous specimens; Heterogeneous materials; Fracture propagation; Crack growth; Kinking; Digital image correlation; DIC; Crack detection; Specimen saturation; Breakdown pressure; Cyclic fluid injection; Cyclic pressurization; Static fatigue; Gas fracturing; Nitrogen fracturing; Injection rate; Constant pressure injection; Pore pressure

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

APA (6^th Edition):

-6566-4815. (2019). Experimental studies in hydraulic fracture growth : fundamental insights and validation experiments for geomechanical models. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/1391

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

Chicago Manual of Style (16^th Edition):

-6566-4815. “Experimental studies in hydraulic fracture growth : fundamental insights and validation experiments for geomechanical models.” 2019. Doctoral Dissertation, University of Texas – Austin. Accessed April 16, 2021. http://dx.doi.org/10.26153/tsw/1391.

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

MLA Handbook (7^th Edition):

-6566-4815. “Experimental studies in hydraulic fracture growth : fundamental insights and validation experiments for geomechanical models.” 2019. Web. 16 Apr 2021.

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

Vancouver:

-6566-4815. Experimental studies in hydraulic fracture growth : fundamental insights and validation experiments for geomechanical models. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2019. [cited 2021 Apr 16]. Available from: http://dx.doi.org/10.26153/tsw/1391.

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

Council of Science Editors:

-6566-4815. Experimental studies in hydraulic fracture growth : fundamental insights and validation experiments for geomechanical models. [Doctoral Dissertation]. University of Texas – Austin; 2019. Available from: http://dx.doi.org/10.26153/tsw/1391

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

Jönköping University

9. Ryberg, Peter. Capital Goods for the Common Good : The Capital-to-income Ratio's connection to Income Inequality in Sweden.

Degree: Jönköping International Business School, 2015, Jönköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-26857

► This thesis utilises the second fundamental law of capitalism in order to study the development of income inequality in Sweden, from the start of… (more)

Subjects/Keywords: Capital-to-income ratio; Capital; Wealth; Income Inequality; The Second Fundamental Law of Capitalism; Growth Rate; Savings Rate

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APA (6^th Edition):

Ryberg, P. (2015). Capital Goods for the Common Good : The Capital-to-income Ratio's connection to Income Inequality in Sweden. (Thesis). Jönköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-26857

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):

Ryberg, Peter. “Capital Goods for the Common Good : The Capital-to-income Ratio's connection to Income Inequality in Sweden.” 2015. Thesis, Jönköping University. Accessed April 16, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-26857.

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

MLA Handbook (7^th Edition):

Ryberg, Peter. “Capital Goods for the Common Good : The Capital-to-income Ratio's connection to Income Inequality in Sweden.” 2015. Web. 16 Apr 2021.

Vancouver:

Ryberg P. Capital Goods for the Common Good : The Capital-to-income Ratio's connection to Income Inequality in Sweden. [Internet] [Thesis]. Jönköping University; 2015. [cited 2021 Apr 16]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-26857.

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

Council of Science Editors:

Ryberg P. Capital Goods for the Common Good : The Capital-to-income Ratio's connection to Income Inequality in Sweden. [Thesis]. Jönköping University; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-26857

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

University of Gothenburg / Göteborgs Universitet

10. Näslund, Joacim. The Pace of Life of Juvenile Brown Trout - Inter- and Intra-individual Variation in Growth and Behaviour.

Degree: 2015, University of Gothenburg / Göteborgs Universitet

URL: http://hdl.handle.net/2077/40167

► The pace-of-life (POL) syndrome hypothesis is the prevailing model used for explaining the differences in how animals live their lives. The POL syndrome is a… (more)

▼ The pace-of-life (POL) syndrome hypothesis is the prevailing model used for explaining the differences in how animals live their lives. The POL syndrome is a framework connecting life-history traits (traits describing the characteristics of the life cycle of an organism) with behavioural and physiological traits, which can be used to describe differences between species, individuals and even within single individuals at different energetic states. A fast POL reflects attributes such as increased risk-taking, high metabolism, fast growth, low cellular maintenance, proactive stress handling and shorter life expectancy, whereas a slow POL is attributed with the opposite traits. This thesis investigates both inter- and intra-individual differences in a range of POL traits in juvenile brown trout (Salmo trutta). In a stream experiment, one-year-old (1+) trout were shown to elicit faster than normal growth rates (i.e. increasing their pace-of-life) following starvation. This phenomenon, commonly known as compensatory growth (CG), was observed over summer and autumn before diminishing in winter. Despite CG, a hypothesised decrease in cellular maintenance was not detected and survival was not significantly affected. A subsequent stream experiment investigating the effects of food-restriction on trout in late autumn also showed that CG was not elicited in the winter. Nevertheless, food-restricted fish performed equally well in terms of survival and condition (length-mass relationship), when compared to well-fed fish in the following spring. However, seaward migration in spring appeared to be delayed as a consequence of this achievement. Given that 1+ trout could elicit CG, the focus of the study switched towards trout fry (0+). Fry normally grow much faster than 1+ trout, which may affect their scope to further increase growth rates. The experiments showed that CG in fry could occur in the laboratory environment but not in the wild, suggesting that fry growth rates are environmentally constrained in nature. Investigation of the behaviour in fry following different food treatments indicated that their behaviour was not influenced by CG, which may be adaptive if higher than normal growth is impossible to achieve in nature at this life-stage. Behavioural syndromes (associations between different behavioural POL traits) were found, generally reflecting different activity levels. More active 0+ fish had higher survival rates than less active ones, however no such difference was observed in 1+ _sh. Instead, the more active 1+ fish appeared to grow better in high-quality habitats whilst in habitats of lower quality a more passive strategy was more beneficial. Thus, different behavioural strategies appear to be advantageous in different environments. This thesis presents several results contradictory to the general POLS hypothesis, which may be attributed to the territorial life-style of trout. This highlights the importance of not assuming trait correlations or ecological consequences of single traits only because the POLS…

Subjects/Keywords: Behavioural syndrome; Compensatory growth; Growth rate; Mortality; Salmo trutta; Pace-of-life syndrome; State-dependent behaviour; Trade-off

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APA (6^th Edition):

Näslund, J. (2015). The Pace of Life of Juvenile Brown Trout - Inter- and Intra-individual Variation in Growth and Behaviour. (Thesis). University of Gothenburg / Göteborgs Universitet. Retrieved from http://hdl.handle.net/2077/40167

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):

Näslund, Joacim. “The Pace of Life of Juvenile Brown Trout - Inter- and Intra-individual Variation in Growth and Behaviour.” 2015. Thesis, University of Gothenburg / Göteborgs Universitet. Accessed April 16, 2021. http://hdl.handle.net/2077/40167.

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

MLA Handbook (7^th Edition):

Näslund, Joacim. “The Pace of Life of Juvenile Brown Trout - Inter- and Intra-individual Variation in Growth and Behaviour.” 2015. Web. 16 Apr 2021.

Vancouver:

Näslund J. The Pace of Life of Juvenile Brown Trout - Inter- and Intra-individual Variation in Growth and Behaviour. [Internet] [Thesis]. University of Gothenburg / Göteborgs Universitet; 2015. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/2077/40167.

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

Council of Science Editors:

Näslund J. The Pace of Life of Juvenile Brown Trout - Inter- and Intra-individual Variation in Growth and Behaviour. [Thesis]. University of Gothenburg / Göteborgs Universitet; 2015. Available from: http://hdl.handle.net/2077/40167

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

Virginia Tech

11. Sheth, Swapnil Suhas. Self-Consistency of the Lauritzen-Hoffman and Strobl Models of Polymer Crystallization Evaluated for Poly(ε-caprolactone) Fractions and Effect of Composition on the Phenomenon of Concurrent Crystallization in Polyethylene Blends.

Degree: PhD, Chemistry, 2013, Virginia Tech

URL: http://hdl.handle.net/10919/23904

► Narrow molecular weight fractions of Poly(ε-caprolactone) were successfully obtained using the successive precipitation fractionation technique with toluene/n-heptane as a solvent/nonsolvent pair. Calorimetric studies of the… (more)

▼ Narrow molecular weight fractions of Poly(ε-caprolactone) were successfully obtained using the successive precipitation fractionation technique with toluene/n-heptane as a solvent/nonsolvent pair. Calorimetric studies of the melting behavior of fractions that were crystallized either isothermally or under constant cooling rate conditions suggested that the isothermal crystallization of the samples should be used for a proper evaluation of the molecular weight dependence of the observed melting temperature and degree of crystallinity in PCL. The molecular weight and temperature dependence of the spherulitic growth rate of fractions was studied in the context of the Lauritzen-Hoffman two-phase model and the Strobl three-phase model of polymer crystallization. The zero-growth rate temperatures, determined from spherulitic growth rates using four different methods, are consistent with each other and increase with chain length. The concomitant increase in the apparent secondary nucleation constant was attributed to two factors. First, for longer chains there is an increase in the probability that crystalline stems belong to loose chain-folds, hence, an increase in fold surface free energy. It is speculated that the increase in loose folding and resulting decrease in crystallinity with increasing chain length are associated with the ester group registration requirement in PCL crystals. The second contribution to the apparent nucleation constant arises from chain friction associated with segmental transport across the melt/crystal interface. These factors were responsible for the much stronger chain length dependence of spherulitic growth rates at fixed undercooling observed here with PCL than previously reported for PE and PEO. In the case of PCL, the scaling exponent associated with the chain length dependence of spherulitic growth rates exceeds the upper theoretical bound of 2 predicted from the Brochard-DeGennes chain pullout model. Observation that zero-growth and equilibrium melting temperature values are identical with each other within the uncertainty of their determinations casts serious doubt on the validity of Strobl three-phase model. A novel method is proposed to determine the Porod constant necessary to extrapolate the small angle X-ray scattering intensity data to large scattering vectors. The one-dimensional correlation function determined using this Porod constant yielded the values of lamellar crystal thickness, which were similar to these estimated using the Hosemann-Bagchi Paracrystalline Lattice model. The temperature dependence of the lamellar crystal thickness was consistent with both LH and the Strobl model of polymer crystallization. However, in contrast to the predictions of Strobl’s model, the value of the mesomorph-to-crystal equilibrium transition temperature was very close to the zero-growth temperature. Moreover, the lateral block sizes (obtained using wide angle X-ray diffraction) and the lamellar thicknesses were not found to be controlled by the mesomorph-to-crystal equilibrium… Advisors/Committee Members: Marand, Hervé L. (committeechair), Moore, Robert Bowen (committee member), Esker, Alan R. (committee member), Turner, S. Richard (committee member).

Subjects/Keywords: Polymer Crystallization; Poly(ε-caprolactone); Lauritzen-Hoffman Model; Strobl Model; Fractionation; Spherulite Growth Rate; Brochard-deGennes Theory; Lamellar Thickness; X-ray Scattering; Concurrent Crystallization; Co-crystallization

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APA (6^th Edition):

Sheth, S. S. (2013). Self-Consistency of the Lauritzen-Hoffman and Strobl Models of Polymer Crystallization Evaluated for Poly(ε-caprolactone) Fractions and Effect of Composition on the Phenomenon of Concurrent Crystallization in Polyethylene Blends. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/23904

Chicago Manual of Style (16^th Edition):

Sheth, Swapnil Suhas. “Self-Consistency of the Lauritzen-Hoffman and Strobl Models of Polymer Crystallization Evaluated for Poly(ε-caprolactone) Fractions and Effect of Composition on the Phenomenon of Concurrent Crystallization in Polyethylene Blends.” 2013. Doctoral Dissertation, Virginia Tech. Accessed April 16, 2021. http://hdl.handle.net/10919/23904.

MLA Handbook (7^th Edition):

Sheth, Swapnil Suhas. “Self-Consistency of the Lauritzen-Hoffman and Strobl Models of Polymer Crystallization Evaluated for Poly(ε-caprolactone) Fractions and Effect of Composition on the Phenomenon of Concurrent Crystallization in Polyethylene Blends.” 2013. Web. 16 Apr 2021.

Vancouver:

Sheth SS. Self-Consistency of the Lauritzen-Hoffman and Strobl Models of Polymer Crystallization Evaluated for Poly(ε-caprolactone) Fractions and Effect of Composition on the Phenomenon of Concurrent Crystallization in Polyethylene Blends. [Internet] [Doctoral dissertation]. Virginia Tech; 2013. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/10919/23904.

Council of Science Editors:

Sheth SS. Self-Consistency of the Lauritzen-Hoffman and Strobl Models of Polymer Crystallization Evaluated for Poly(ε-caprolactone) Fractions and Effect of Composition on the Phenomenon of Concurrent Crystallization in Polyethylene Blends. [Doctoral Dissertation]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/23904

Loughborough University

12. Abdo, Dani. Mechanical behaviour and microstructure of short-fibre-reinforced polybutylene terephthalate.

Degree: PhD, 2019, Loughborough University

URL: https://doi.org/10.26174/thesis.lboro.12058443.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808035

► Short-fiber-reinforced thermoplastics are widely used in industry. They are light-weight, have excellent mechanical properties and can be processed via injection moulding. This allows the mass… (more)

▼ Short-fiber-reinforced thermoplastics are widely used in industry. They are light-weight, have excellent mechanical properties and can be processed via injection moulding. This allows the mass production of high-quality components with excellent geometric accuracy. Their superior isolation properties make them a good choice for electrical housings in the automotive sector. Due to the importance and precise nature of applications, in which such products are employed, a deep understanding of their deformation and fractures under specific conditions is essential. A typical example of such thermoplastics is polybutylene terephthalate (PBT). In this thesis, an evaluation of mechanical and morphological properties of short-glass-fibre-reinforced (SGFR) PBT and SGFR PBT TPEE (thermoplastic polyester elastomer: an impact-enhancing additive) is performed, emphasising the effect of TPEE on strain-rate-dependent behaviour and plastic deformation together with assessment of energy-dissipation levels. Experimental studies including uniaxial tensile testing performed at different strain rates revealed degradation in the overall tensile properties and a reduced strain-at-break value as result of TPEE addition to PBT. Furthermore, cyclic tests and incremental loading tests showed that the plastic strain at different loading rates increased with introduction of TPEE in the composite. Dynamic mechanical analysis of the studied materials revealed an increase in viscosity, loss-modulus values and damping capability (tan δ) of the TPEE composite over a specified frequency range, while a damage analysis on basis of degradation of the Young's modulus demonstrated increased damage initiation and accumulation for this composite. A study of fracture-surface morphology of tensile-tested samples uncovered the effect of microstructure on variations in mechanical properties, observed in the experimentation part of the study. The analysis demonstrated a significant effect of microstructure on mechanical performance of the PBT composites. The increased plastic strain was proved to be a result of higher plasticity observed in the fractographs. Larger ductile-area fractions were measured on PBT-GF10 TPEE fracture surfaces at all strain rates, in addition to increased void nucleation and relatively insufficient fibre-matrix interfacial adhesion in the TPEE composite. This was evident by the stretched gaps around pull-out glass fibres. The increased energy dissipation was linked to higher deformation and plasticity of the fracture surface. Moreover, an increased viscoplastic material flow was observed in the TPEE composite, demonstrated by formation of conic structures around glass fibres, which, in turn, enhanced the damping properties of this composite.

Subjects/Keywords: Composite materials; PBT; Tensile strength results; Dynamic Mechanical Analyses; Dynamic behaviors of materials; x-ray data; strain rate sensitivity; polymer behavior

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APA (6^th Edition):

Abdo, D. (2019). Mechanical behaviour and microstructure of short-fibre-reinforced polybutylene terephthalate. (Doctoral Dissertation). Loughborough University. Retrieved from https://doi.org/10.26174/thesis.lboro.12058443.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808035

Chicago Manual of Style (16^th Edition):

Abdo, Dani. “Mechanical behaviour and microstructure of short-fibre-reinforced polybutylene terephthalate.” 2019. Doctoral Dissertation, Loughborough University. Accessed April 16, 2021. https://doi.org/10.26174/thesis.lboro.12058443.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808035.

MLA Handbook (7^th Edition):

Abdo, Dani. “Mechanical behaviour and microstructure of short-fibre-reinforced polybutylene terephthalate.” 2019. Web. 16 Apr 2021.

Vancouver:

Abdo D. Mechanical behaviour and microstructure of short-fibre-reinforced polybutylene terephthalate. [Internet] [Doctoral dissertation]. Loughborough University; 2019. [cited 2021 Apr 16]. Available from: https://doi.org/10.26174/thesis.lboro.12058443.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808035.

Council of Science Editors:

Abdo D. Mechanical behaviour and microstructure of short-fibre-reinforced polybutylene terephthalate. [Doctoral Dissertation]. Loughborough University; 2019. Available from: https://doi.org/10.26174/thesis.lboro.12058443.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808035

University of Western Ontario

13. Jamali, Jamaloddin. Mechanistic Failure Criterion for Unidirectional and Random Fibre Polymer Composites.

Degree: 2014, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/2185

► Polymer composite design in energy absorbing components requires a failure criterion that can predict the energy involved in its fracture under different modes of loading.… (more)

Subjects/Keywords: UD Polymer Composites; Random Fibre Polymer Composite; Mixed-Mode Loading; Failure Criterion; Critical Strain Energy Release Rate; Through-Thickness Crack; Applied Mechanics; Mechanics of Materials; Structural Materials

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APA (6^th Edition):

Jamali, J. (2014). Mechanistic Failure Criterion for Unidirectional and Random Fibre Polymer Composites. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/2185

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):

Jamali, Jamaloddin. “Mechanistic Failure Criterion for Unidirectional and Random Fibre Polymer Composites.” 2014. Thesis, University of Western Ontario. Accessed April 16, 2021. https://ir.lib.uwo.ca/etd/2185.

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

MLA Handbook (7^th Edition):

Jamali, Jamaloddin. “Mechanistic Failure Criterion for Unidirectional and Random Fibre Polymer Composites.” 2014. Web. 16 Apr 2021.

Vancouver:

Jamali J. Mechanistic Failure Criterion for Unidirectional and Random Fibre Polymer Composites. [Internet] [Thesis]. University of Western Ontario; 2014. [cited 2021 Apr 16]. Available from: https://ir.lib.uwo.ca/etd/2185.

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

Council of Science Editors:

Jamali J. Mechanistic Failure Criterion for Unidirectional and Random Fibre Polymer Composites. [Thesis]. University of Western Ontario; 2014. Available from: https://ir.lib.uwo.ca/etd/2185

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

14. Richardson, Jeremy O. Ring-polymer approaches to instanton theory.

Degree: PhD, 2012, University of Cambridge

URL: http://www.dspace.cam.ac.uk/handle/1810/243641https://www.repository.cam.ac.uk/bitstream/1810/243641/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/3/license_url ; https://www.repository.cam.ac.uk/bitstream/1810/243641/4/license_text ; https://www.repository.cam.ac.uk/bitstream/1810/243641/5/license_rdf ; https://www.repository.cam.ac.uk/bitstream/1810/243641/8/RichardsonJO_thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/9/RichardsonJO_thesis.pdf.jpg

► Inspired by the success of the ring-polymer molecular dynamics (RPMD) method, we derive a transition-state-theory version (RPTST) with a dividing surface which is, in general,… (more)

▼ Inspired by the success of the ring-polymer molecular dynamics (RPMD) method, we derive a transition-state-theory version (RPTST) with a dividing surface which is, in general, conical in ring-polymer space. It is explained why this conical form is a good approximation to the optimal dividing surface and therefore why centroid-based quantum transition-state theories are inaccurate for asymmetric barriers at low temperatures. The geometry of the ring-polymer transition state is found to describe a finite-difference approximation to the semi-classical instanton trajectory (a classical periodic orbit of length βħ on the inverted potential). Based on this, a new practical method for locating multidimensional instantons is proposed, by computing saddle points on the ring-polymer surface, and a derivation for the reaction rate constant based on the "ImF" premise using the ring-polymer formalism is shown to be far simpler than in previous instanton approaches based on functional determinants. The resulting expression is based only on the ring-polymer potential at the transition-state and its Hessian, and is applied to evaluate the rate in a number of polyatomic systems. We show that a free-energy version of the ImF instanton theory is related to RPTST and thereby provide an explanation for why RPMD produces accurate results for thermal reaction rates in the deep-tunnelling regime and demonstrate how it can be made more efficient and systematically improved. From this, we also explain why RPMD is seen to underestimate the rates of symmetric reactions and overestimate the rates of asymmetric reactions. We also present a ring-polymer instanton derivation of a theory for calculating tunnelling splittings leading to another new practical method, which owing to its simple form, is easily extended to determine the entire tunnelling-splitting pattern of molecular clusters with two or more degenerate wells. This method is applied to the water dimer, trimer, and octamer, and shown to be in good overall agreement with experiment and to provide a deeper understanding of the tunnelling pathways.

Subjects/Keywords: Instanton; Ring polymer; Tunnelling; Splitting; Rate; Water

8 more images…

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APA (6^th Edition):

Richardson, J. O. (2012). Ring-polymer approaches to instanton theory. (Doctoral Dissertation). University of Cambridge. Retrieved from http://www.dspace.cam.ac.uk/handle/1810/243641https://www.repository.cam.ac.uk/bitstream/1810/243641/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/3/license_url ; https://www.repository.cam.ac.uk/bitstream/1810/243641/4/license_text ; https://www.repository.cam.ac.uk/bitstream/1810/243641/5/license_rdf ; https://www.repository.cam.ac.uk/bitstream/1810/243641/8/RichardsonJO_thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/9/RichardsonJO_thesis.pdf.jpg

Chicago Manual of Style (16^th Edition):

Richardson, Jeremy O. “Ring-polymer approaches to instanton theory.” 2012. Doctoral Dissertation, University of Cambridge. Accessed April 16, 2021. http://www.dspace.cam.ac.uk/handle/1810/243641https://www.repository.cam.ac.uk/bitstream/1810/243641/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/3/license_url ; https://www.repository.cam.ac.uk/bitstream/1810/243641/4/license_text ; https://www.repository.cam.ac.uk/bitstream/1810/243641/5/license_rdf ; https://www.repository.cam.ac.uk/bitstream/1810/243641/8/RichardsonJO_thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/9/RichardsonJO_thesis.pdf.jpg.

MLA Handbook (7^th Edition):

Richardson, Jeremy O. “Ring-polymer approaches to instanton theory.” 2012. Web. 16 Apr 2021.

Vancouver:

Richardson JO. Ring-polymer approaches to instanton theory. [Internet] [Doctoral dissertation]. University of Cambridge; 2012. [cited 2021 Apr 16]. Available from: http://www.dspace.cam.ac.uk/handle/1810/243641https://www.repository.cam.ac.uk/bitstream/1810/243641/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/3/license_url ; https://www.repository.cam.ac.uk/bitstream/1810/243641/4/license_text ; https://www.repository.cam.ac.uk/bitstream/1810/243641/5/license_rdf ; https://www.repository.cam.ac.uk/bitstream/1810/243641/8/RichardsonJO_thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/9/RichardsonJO_thesis.pdf.jpg.

Council of Science Editors:

Richardson JO. Ring-polymer approaches to instanton theory. [Doctoral Dissertation]. University of Cambridge; 2012. Available from: http://www.dspace.cam.ac.uk/handle/1810/243641https://www.repository.cam.ac.uk/bitstream/1810/243641/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/3/license_url ; https://www.repository.cam.ac.uk/bitstream/1810/243641/4/license_text ; https://www.repository.cam.ac.uk/bitstream/1810/243641/5/license_rdf ; https://www.repository.cam.ac.uk/bitstream/1810/243641/8/RichardsonJO_thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/243641/9/RichardsonJO_thesis.pdf.jpg

Louisiana State University

15. Wang, Anqi. High Strain Rate Programming Of Shape Memory Polymers.

Degree: MSME, Accounting, 2012, Louisiana State University

URL: etd-07032012-001837 ; https://digitalcommons.lsu.edu/gradschool_theses/3091

► Shape memory polymers (SMPs) have been studied for using in self-healing structures through a bio-mimetic self-healing scheme recently. This scheme requires programming of the SMPs… (more)

Subjects/Keywords: programming; shape memory polymer; high strain rate

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APA (6^th Edition):

Wang, A. (2012). High Strain Rate Programming Of Shape Memory Polymers. (Masters Thesis). Louisiana State University. Retrieved from etd-07032012-001837 ; https://digitalcommons.lsu.edu/gradschool_theses/3091

Chicago Manual of Style (16^th Edition):

Wang, Anqi. “High Strain Rate Programming Of Shape Memory Polymers.” 2012. Masters Thesis, Louisiana State University. Accessed April 16, 2021. etd-07032012-001837 ; https://digitalcommons.lsu.edu/gradschool_theses/3091.

MLA Handbook (7^th Edition):

Wang, Anqi. “High Strain Rate Programming Of Shape Memory Polymers.” 2012. Web. 16 Apr 2021.

Vancouver:

Wang A. High Strain Rate Programming Of Shape Memory Polymers. [Internet] [Masters thesis]. Louisiana State University; 2012. [cited 2021 Apr 16]. Available from: etd-07032012-001837 ; https://digitalcommons.lsu.edu/gradschool_theses/3091.

Council of Science Editors:

Wang A. High Strain Rate Programming Of Shape Memory Polymers. [Masters Thesis]. Louisiana State University; 2012. Available from: etd-07032012-001837 ; https://digitalcommons.lsu.edu/gradschool_theses/3091

University of Newcastle

16. Chaminda Konthesingha, Konthesingha Muhandiramlage. Earthquake protection of masonry shear walls using fibre reinforced polymer strengthening.

Degree: PhD, 2012, University of Newcastle

URL: http://hdl.handle.net/1959.13/935794

►

Research Doctorate - Doctor of Philosophy (PhD)

Unreinforced masonry (URM) buildings are highly vulnerable to damage during earthquakes, due to their high mass, limited ductility… (more)

▼

Research Doctorate - Doctor of Philosophy (PhD)

Unreinforced masonry (URM) buildings are highly vulnerable to damage during earthquakes, due to their high mass, limited ductility and low tensile strength. However, being economical, durable, easy to procure and good for thermal and sound insulation ensures that URM is widely used both for low-rise structural walls and for infill to framed structures. In addition to that, many of the existing historically and culturally important buildings have been identified as URM constructions. Therefore, strengthening of URM buildings to resist earthquake damage has a remarkable importance. URM shear wall strengthening with near surface mounted (NSM) fibre reinforced polymer (FRP) strips is a relatively new and effective seismic retrofitting technique to improve their earthquake resistance. This technique involves inserting thin FRP strips into grooves cut into the surface of the wall. The aesthetic impact to the structure is minimal due to this strengthening technique compared with attaching FRP reinforcement to the surface of the wall (External Bonding (EB) technique). The other advantages of NSM FRP are the ability to develop higher strains in the FRP before debonding compared to EB techniques, and protection from vandalism, to some extent from fire and other environmental influences. In this research study an extensive experimental study along with numerical analyses were carried out to investigate the cyclic in-plane shear behaviour of unreinforced masonry (URM) walls retrofitted/strengthened with near surface mounted (NSM) fibre reinforced polymer (FRP) strips. Carbon FRP (CFRP) strips were used in this technique and were designed to enhance the performance of URM walls which fail by diagonal cracking or bed joint sliding within the height of the wall. The bond-slip behaviour between NSM FRP strips and clay brick masonry was investigated using six experimental pull tests under cyclic loading. The results including bond strengths, critical bond length and the local bond-slip behaviour were determined and were compared with a similar monotonically loaded pull test results. The bond-slip curves for monotonic and cyclic loading cases were approximately similar. Two major experimental investigations were carried out in this project to investigate the effectiveness of retrofitting/strengthening of URM walls panels with NSM CFRP strips using previously damaged and newly constructed undamaged wall panels. The effectiveness of NSM CFRP strip retrofitting applied to damaged URM walls was investigated using sixteen previously damaged wall panels with two different damage levels (lightly and highly) subjected to vertical pre-compression combined with increasing reversing cycles of in-plane lateral displacement. The damaged walls were partially repaired, retrofitted with NSM FRP strips and retested. The study assessed the effect on strength, displacement capacity, energy dissipation and ductility achieved by FRP retrofitting compared to the undamaged URM panels under different…

Advisors/Committee Members: University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering.

Subjects/Keywords: masonry; cyclic; shear; near surface mounted (NSM); fibre reinforced polymer (FRP)

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APA (6^th Edition):

Chaminda Konthesingha, K. M. (2012). Earthquake protection of masonry shear walls using fibre reinforced polymer strengthening. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/935794

Chicago Manual of Style (16^th Edition):

Chaminda Konthesingha, Konthesingha Muhandiramlage. “Earthquake protection of masonry shear walls using fibre reinforced polymer strengthening.” 2012. Doctoral Dissertation, University of Newcastle. Accessed April 16, 2021. http://hdl.handle.net/1959.13/935794.

MLA Handbook (7^th Edition):

Chaminda Konthesingha, Konthesingha Muhandiramlage. “Earthquake protection of masonry shear walls using fibre reinforced polymer strengthening.” 2012. Web. 16 Apr 2021.

Vancouver:

Chaminda Konthesingha KM. Earthquake protection of masonry shear walls using fibre reinforced polymer strengthening. [Internet] [Doctoral dissertation]. University of Newcastle; 2012. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/1959.13/935794.

Council of Science Editors:

Chaminda Konthesingha KM. Earthquake protection of masonry shear walls using fibre reinforced polymer strengthening. [Doctoral Dissertation]. University of Newcastle; 2012. Available from: http://hdl.handle.net/1959.13/935794

Bucknell University

17. Myers, Kenneth Daniel. Synthesis of Cyclic Poly (Methyl Acrylate) and Cyclic Poly (Methyl Acrylate)/Polystyrene Diblocks by ATRP and RTA-ATRC.

Degree: 2014, Bucknell University

URL: https://digitalcommons.bucknell.edu/masters_theses/129

► The unique properties and application of polymers to nearly all field of industries has continued to inspire advancements in polymer chemistry. Recently, specialized polymers containing… (more)

▼ The unique properties and application of polymers to nearly all field of industries has continued to inspire advancements in polymer chemistry. Recently, specialized polymers containing unique architectures and functionality have shown promise in the fields of drug delivery and alternative energy. Controlled radical polymerization (CRP) reactions can be used with a variety of different vinyl monomers to produce low polydispersity samples that retain end group functionality and can undergo post polymerization reactions to create these unique architectures. In this research, dibrominated poly(methyl acrylate) (BrPMABr) was prepared using a well-studied CRP called atom transfer radical polymerization (ATRP). The reaction mixture was used directly in a post polymerization reaction termed radical trap-assisted atom transfer radical coupling (RTA-ATRC) reaction to achieve cyclic PMA by intramolecular coupling of the functional ends to 2-methyl-2-nitroso propane (MNP). When the polymerization-to-cyclization crossover was performed as a one pot-two step sequence simply by the addition of the radical trap MNP and increased amounts of ligand-catalyst, cyclic PMA could be formed in yields up to 65% by adjusting the total volume during the intramolecular RTA-ATRC, based on gel permeation chromatography (GPC) analysis. When the ATRP reaction mixture containing the BrPMABr precursor was added drop-wise into a redox active solution containing MNP, yields of cyclic polymer were increased up to 75%. Cyclic PMA products had G-Values of approximately 0.8 in comparison to linear PMA precursors which is in agreement with G-Values seen from previously reported cyclic polymers. The effect of the ligand was studied, with the highest amounts of cyclic product obtained in intramolecular RTA-ATRC reactions using tris[2-(dimethylamino)ethyl]amine (Me6TREN) as the ligand. In analogous intramolecular ATRC trials lacking the radical trap, cyclization was not successful and instead chain extension by continuation of ATRP was observed. Cyclic diblock copolymers were also prepared by RTA-ATRC, using telechelic PMA-b-PSt-b-PMA precursors prepared by sequential ATRP reactions.

Subjects/Keywords: Chemistry; Polymer; Acrylate; ATRP; RTA-ATRC; Diblocks; Cyclic; G-Value

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APA (6^th Edition):

Myers, K. D. (2014). Synthesis of Cyclic Poly (Methyl Acrylate) and Cyclic Poly (Methyl Acrylate)/Polystyrene Diblocks by ATRP and RTA-ATRC. (Thesis). Bucknell University. Retrieved from https://digitalcommons.bucknell.edu/masters_theses/129

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):

Myers, Kenneth Daniel. “Synthesis of Cyclic Poly (Methyl Acrylate) and Cyclic Poly (Methyl Acrylate)/Polystyrene Diblocks by ATRP and RTA-ATRC.” 2014. Thesis, Bucknell University. Accessed April 16, 2021. https://digitalcommons.bucknell.edu/masters_theses/129.

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

MLA Handbook (7^th Edition):

Myers, Kenneth Daniel. “Synthesis of Cyclic Poly (Methyl Acrylate) and Cyclic Poly (Methyl Acrylate)/Polystyrene Diblocks by ATRP and RTA-ATRC.” 2014. Web. 16 Apr 2021.

Vancouver:

Myers KD. Synthesis of Cyclic Poly (Methyl Acrylate) and Cyclic Poly (Methyl Acrylate)/Polystyrene Diblocks by ATRP and RTA-ATRC. [Internet] [Thesis]. Bucknell University; 2014. [cited 2021 Apr 16]. Available from: https://digitalcommons.bucknell.edu/masters_theses/129.

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

Council of Science Editors:

Myers KD. Synthesis of Cyclic Poly (Methyl Acrylate) and Cyclic Poly (Methyl Acrylate)/Polystyrene Diblocks by ATRP and RTA-ATRC. [Thesis]. Bucknell University; 2014. Available from: https://digitalcommons.bucknell.edu/masters_theses/129

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

University of Florida

18. Nadif, Soufiane. Trianionic Pincer Ligands: Proton Storage within a Pyrrolide Pincer-Type Ligand and Ynene Metathesis Leading to Stereoregular Cyclic Polymers.

Degree: PhD, Chemistry, 2017, University of Florida

URL: https://ufdc.ufl.edu/UFE0051433

Subjects/Keywords: alkylidene; alkylidyne; cyclic; pincer; polymer

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APA (6^th Edition):

Nadif, S. (2017). Trianionic Pincer Ligands: Proton Storage within a Pyrrolide Pincer-Type Ligand and Ynene Metathesis Leading to Stereoregular Cyclic Polymers. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0051433

Chicago Manual of Style (16^th Edition):

Nadif, Soufiane. “Trianionic Pincer Ligands: Proton Storage within a Pyrrolide Pincer-Type Ligand and Ynene Metathesis Leading to Stereoregular Cyclic Polymers.” 2017. Doctoral Dissertation, University of Florida. Accessed April 16, 2021. https://ufdc.ufl.edu/UFE0051433.

MLA Handbook (7^th Edition):

Nadif, Soufiane. “Trianionic Pincer Ligands: Proton Storage within a Pyrrolide Pincer-Type Ligand and Ynene Metathesis Leading to Stereoregular Cyclic Polymers.” 2017. Web. 16 Apr 2021.

Vancouver:

Nadif S. Trianionic Pincer Ligands: Proton Storage within a Pyrrolide Pincer-Type Ligand and Ynene Metathesis Leading to Stereoregular Cyclic Polymers. [Internet] [Doctoral dissertation]. University of Florida; 2017. [cited 2021 Apr 16]. Available from: https://ufdc.ufl.edu/UFE0051433.

Council of Science Editors:

Nadif S. Trianionic Pincer Ligands: Proton Storage within a Pyrrolide Pincer-Type Ligand and Ynene Metathesis Leading to Stereoregular Cyclic Polymers. [Doctoral Dissertation]. University of Florida; 2017. Available from: https://ufdc.ufl.edu/UFE0051433

Kansas State University

19. Ren, Zhongkan. Organosilicon polymer-derived ceramic fibers: fabrication and molecular structure investigations.

Degree: PhD, Department of Mechanical and Nuclear Engineering, 2020, Kansas State University

URL: http://hdl.handle.net/2097/40894

► As humans entered 21st century, the energy crisis has gained more attention and reached a critical situation that may impede the further innovation of science… (more)

▼ As humans entered 21st century, the energy crisis has gained more attention and reached a critical situation that may impede the further innovation of science and technology. Along with the development of the Internet and wireless communication, electronic devices, from automated production robots down to small consumer electronics, are overtaking our lives at a rate that none of the conventional industries can compete with. This leads to the ever-growing demand for energy production, transportation, and storage. In addition to the investigations on clean or renewable energy sources, more researches are promoting the efficiency of generating or utilizing the already existed forms of energy. Aerospace related development and applications consume a significant amount of resources. As a critical unit of aerospace application, turbine engines may be effectively advance by the reliable high-temperature components in not only the performance but the efficiency. Fiber-reinforced ceramic matrix composites (FRCMCs) are proposed as the next-gen material of turbine high-temperature components (such as turbine blades, shrouds, combustor liner, exhaust nozzle, etc.), with high oxidation and creep resistance and outstanding mechanical performance at elevated temperatures but lower density than single crystals. Within the CMCs, ceramic fibers serve as the major performance support. Polymer derived ceramics (PDCs) or polymer derived ceramic route is an innovated ceramic production technique, developed over the last half-century, that begins with the synthesis or the selection of monomer molecules (therefore also known as molecular methods); fine-tunes at the precursor stage; shapes during crosslinking stage; and converts the organic components into inorganic ceramics via pyrolysis. This method enables the synthesis of uniform ceramic fibers at a much lower temperature and easier processing condition than conventional powder-based synthesis. PDC fibers (SiC, Al₂O₃, BN, etc.) have already shown great potential in high-temperature applications as reinforcement of CMCs. This thesis focus on the synthesis and characterization of ceramic fibers from silicon-based liquid-phase precursors. The fibers are drawn using two different techniques (hand spinning and electrospinning), that are able to deliver individual ceramic fibers and ceramic fiber mats. The first approach demonstrates the preparation of SiOCN fibers from a hybrid precursor of 1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasilazane (referred to as TTCSZ) and polyacrylic acid (PAA) using hand spinning. Later, SiOC fiber mats are synthesized via electrospinning from various cyclic preceramic oligomers or monomers with polyvinylpyrrolidone (PVP) as a spinning reagent. The fiber products are systematically investigated molecular structures, performances, and chemical bonding progression of the fibers at each processing stage (spinning, crosslinking, and pyrolysis). The approaches for ceramic fiber spinning and pyrolysis processes utilize cyclic siloxanes and silazanes for the… Advisors/Committee Members: Gurpreet Singh.

Subjects/Keywords: Polymer-derived ceramics; SiOC; Fibers; Electrospinning; Hand spinning; Cyclic precursors

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

APA (6^th Edition):

Ren, Z. (2020). Organosilicon polymer-derived ceramic fibers: fabrication and molecular structure investigations. (Doctoral Dissertation). Kansas State University. Retrieved from http://hdl.handle.net/2097/40894

Chicago Manual of Style (16^th Edition):

Ren, Zhongkan. “Organosilicon polymer-derived ceramic fibers: fabrication and molecular structure investigations.” 2020. Doctoral Dissertation, Kansas State University. Accessed April 16, 2021. http://hdl.handle.net/2097/40894.

MLA Handbook (7^th Edition):

Ren, Zhongkan. “Organosilicon polymer-derived ceramic fibers: fabrication and molecular structure investigations.” 2020. Web. 16 Apr 2021.

Vancouver:

Ren Z. Organosilicon polymer-derived ceramic fibers: fabrication and molecular structure investigations. [Internet] [Doctoral dissertation]. Kansas State University; 2020. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/2097/40894.

Council of Science Editors:

Ren Z. Organosilicon polymer-derived ceramic fibers: fabrication and molecular structure investigations. [Doctoral Dissertation]. Kansas State University; 2020. Available from: http://hdl.handle.net/2097/40894

University of Wollongong

20. Ni, Jing. Application of geosynthetic vertical drains under cyclic loads in stabilizing tracks.

Degree: PhD, 2012, University of Wollongong

URL: 0905 CIVIL ENGINEERING, 090501 Civil Geotechnical Engineering ; https://ro.uow.edu.au/theses/3604

► Railways have technical and economic advantages, and therefore, railway traffic has gained a specific and irreplaceable position in recent years. With this background, and… (more)

▼ Railways have technical and economic advantages, and therefore, railway traffic has gained a specific and irreplaceable position in recent years. With this background, and to satisfy their rapid development, railways will inevitably be constructed on soft soil subgrade such as soft clay subgrade. It is desired to understand the behaviour of soft clay subgrade subjected to cyclic loads when a new rail track is designed or an existing one is under maintenance. When the soft clay subgrade is subjected to the cyclic loading, excess pore pressures and axial strains keep developing with the increasing number of cycles, resulting in a decreased bearing capacity of the subgrade and excessive settlement. To improve the subgrade, prefabricated vertical band drains (PVDs) is used increasingly in popularity among a variety of techniques. With the installation of PVDs, a short radial drainage path is introduced to dissipate the excess pore pressure so that the soft clay subgrade becomes more stable subjected to train loads. This thesis covers the laboratory tests and numerical modelling. The behaviour of soft clays under cyclic loading with or without radial drainage is investigated. A series of undrained cyclic triaxial tests were conducted on specimens of reconstituted Kaolinite. Three cyclic stress ratios and four loading frequencies were used in the laboratory tests to study the performance of soft subgrade soil subjected to cyclic loading. The effects of cyclic stress ratio and loading frequency on the generation of excess pore pressures and axial strains were investigated. The roles of cyclic stress ratio and loading frequency play in influencing the stability of soft clay subgrade were discussed. The effect of strain rate for a stress controlled test on the performance of soft clays under cyclic loading was investigated. The relationship between the strain rate and either cyclic stress ratio or loading frequency were figured out, and in this way, the influence of cyclic stress ratio and loading frequency on the progressive shear failure and excessive plastic deformation were justified. Furthermore, due to a high strain rate varying from 150 to 550 %/h for a stress controlled test, the slope of q/p' at failure for cyclic loading could increase compared to the condition of monotonic loading. An undrained cyclic model has been proposed based on the modified Cam-clay model. A modified yield surface function during elastic unloading was proposed to capture the soil behaviour under cyclic loading. Only two additional cyclic degradation parameters ξ₁ and ξ₂ were introduced to present the yield surface during elastic unloading, in addition to the parameters adopted in the modified Cam-clay model. These two cyclic degradation parameters controlled how much the size of the yield surface would shrink during an elastic unloading and how this reduction in the size of the yield surface would change with loading cycles. This model was verified against the laboratory experiments conducted.…

Subjects/Keywords: consolidation; cyclic load; vertical drain; pore pressure; strain rate

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

APA (6^th Edition):

Ni, J. (2012). Application of geosynthetic vertical drains under cyclic loads in stabilizing tracks. (Doctoral Dissertation). University of Wollongong. Retrieved from 0905 CIVIL ENGINEERING, 090501 Civil Geotechnical Engineering ; https://ro.uow.edu.au/theses/3604

Chicago Manual of Style (16^th Edition):

Ni, Jing. “Application of geosynthetic vertical drains under cyclic loads in stabilizing tracks.” 2012. Doctoral Dissertation, University of Wollongong. Accessed April 16, 2021. 0905 CIVIL ENGINEERING, 090501 Civil Geotechnical Engineering ; https://ro.uow.edu.au/theses/3604.

MLA Handbook (7^th Edition):

Ni, Jing. “Application of geosynthetic vertical drains under cyclic loads in stabilizing tracks.” 2012. Web. 16 Apr 2021.

Vancouver:

Ni J. Application of geosynthetic vertical drains under cyclic loads in stabilizing tracks. [Internet] [Doctoral dissertation]. University of Wollongong; 2012. [cited 2021 Apr 16]. Available from: 0905 CIVIL ENGINEERING, 090501 Civil Geotechnical Engineering ; https://ro.uow.edu.au/theses/3604.

Council of Science Editors:

Ni J. Application of geosynthetic vertical drains under cyclic loads in stabilizing tracks. [Doctoral Dissertation]. University of Wollongong; 2012. Available from: 0905 CIVIL ENGINEERING, 090501 Civil Geotechnical Engineering ; https://ro.uow.edu.au/theses/3604

University of Illinois – Urbana-Champaign

21. Liu, Julia Hong. Mechanical behavior of individual type I collagen fibrils.

Degree: MS, Aerospace Engineering, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/92879

► Despite the plethora of studies on the mechanical response of collagen, especially at the molecular scale or at much larger length scales, such as of… (more)

▼ Despite the plethora of studies on the mechanical response of collagen, especially at the molecular scale or at much larger length scales, such as of those of fibers, tendons, and fascicles, there is still limited information about the mechanics of collagen fibrils (50 - 500 nm diameter) that serve as mesoscale building blocks in tissues. In this dissertation research the mechanical behavior of dry individual reconstituted collagen fibrils with different diameters were investigated via monotonic tests at 0.004 s-1, cyclic loading and cyclic loading/recovery experiments, and strain rate tests spanning six decades of strain rates in the range 10-3 – 102 s-1. Experiments were conducted with reconstituted type I calfskin collagen fibrils which were isolated from buffer and after drying were adhesively attached to a microelectromechanical systems (MEMS) device. Experiments were carried out using high-resolution optical microscopy under dry conditions at 20-30% relative humidity (RH) and laboratory temperature. Eight fibrils with diameters of 165±77 nm tested under monotonic loading yielded an average tensile strength of 752±186 MPa, ultimate stretch ratio of 1.3±0.06, and initial stiffness of the stress (σ) vs. stretch ratio (λ) curves, E1 = 5.7±2.3 GPa. These results depended on fibril diameter: fibrils with larger diameters showed increased maximum stretch ratio, λmax, and decreased E1 and decreased stiffness, E2, of the softening regime in the σ - λ curves. Normalizing the applied stress with E1, removed the diameter size effect and provided great consistency in the softening regime of different σ - λ curves. The same process was applied to fibrils tested at nominal strain rates of 10-2 - 102 s-1 showing good agreement between σ/E1 - λ curves obtained at the same strain rate from different fibrils, but also showed a clear increase in E2 with the applied strain rate without a reduction in λ at failure, which implies a gradual linearization of σ-λ curves at higher rates. The mechanical behavior under cyclic loading was studied via experiments in each of the three regimes, with target λmax ~ 1.05 in regime I, λmax ~ 1.25 in regime II, and λmax ~ 1.3 in regime III. In regime I, E1 was unaffected by cycling loading or recovery. The residual strain increased in every cycle, but ~80% of λmax was recovered after resting for 1 hr at zero stress. Regime II was characterized by constant E1, after an initial drop between cycles 1 and 2, a slightly increasing value of E2 in every cycle, and increasing residual strain with cycling. Cycling in regime III also resulted in constant E1 and E2 after an initial reduction between cycles 1 and 2 and increased residual strain with cycle order. The experimental results point out to a process of damage accumulation during cycling, as manifested by the very consistent hysteresis loops and the gradually accumulated residual strain, which however, does not affect the mechanical stiffness of regimes I and II. The latter points out to a cross-link network within the collagen fibril that maintains… Advisors/Committee Members: Chasiotis, Ioannis (advisor).

Subjects/Keywords: collagen; fibril; nanomechanics; rate dependency; hysteresis; recovery; cyclic loading

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APA (6^th Edition):

Liu, J. H. (2016). Mechanical behavior of individual type I collagen fibrils. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/92879

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):

Liu, Julia Hong. “Mechanical behavior of individual type I collagen fibrils.” 2016. Thesis, University of Illinois – Urbana-Champaign. Accessed April 16, 2021. http://hdl.handle.net/2142/92879.

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

MLA Handbook (7^th Edition):

Liu, Julia Hong. “Mechanical behavior of individual type I collagen fibrils.” 2016. Web. 16 Apr 2021.

Vancouver:

Liu JH. Mechanical behavior of individual type I collagen fibrils. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/2142/92879.

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

Council of Science Editors:

Liu JH. Mechanical behavior of individual type I collagen fibrils. [Thesis]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/92879

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

University of Illinois – Urbana-Champaign

22. Crawford, John Williams. Intraspecific variation in resource use, dormancy investment, and competitive ability in the facultative parthenogen Daphnia pulicaria.

Degree: PhD, Biology, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/97583

► Ecological studies highlight that many species and most populations maintain high degrees of intraspecific (within species or within population) variation in a wide variety of… (more)

▼ Ecological studies highlight that many species and most populations maintain high degrees of intraspecific (within species or within population) variation in a wide variety of life-history traits. This pattern prompts the question: how important is this variation? This is a question that is especially motivating for evolutionary ecologists as we are interested in how intraspecific variation influences evolutionary dynamics. While the maintenance of intraspecific variation is especially common in species that reproduce sexually, it is also common in clonal (and partially clonal) species. In my dissertation, I use the facultatively parthenogenetic zooplankton Daphnia pulicaria to address several questions related to the breadth and consequences of intraspecific variation. Freshwater zooplankton species are important subjects for ecologists. In particular, crustaceans in the genus Daphnia have been studied due to their importance as keystone species in many freshwater lakes. They provide ecosystem services including moving resources from the primary producers up to higher trophic levels and have served as models for grazers in other systems. Decades of research on Daphnia demonstrate substantial interspecific (between species) and intraspecific (within species) variation in how individuals respond to available food resources. These studies targeted both spatial variation in the quality and quantity of algal resources between neighboring lakes and temporal variation (including changes due to decades of eutrophication). This prior research has shown that there is interspecific variation in the ability of species to capitalize on different resource quantities and qualities. One limitation of prior research in this system is that it has concentrated almost exclusively on interspecific variation in resource acquisition and allocation and has largely ignored intraspecific variation within and among populations. Variation in resource quality in natural systems along with trade-offs between and within populations in response to resources makes the Daphnia-algae system ideal for examining intraspecific variation in key life-history traits. Prior work on Daphnia suggests both an interspecific and intraspecific trade-off in response to resource quality between “powerful” and “efficient” species and individuals. In several studies, Alan Tessier and colleagues found that some Daphnia species were better able to capitalize on rich resources and that these “powerful” individuals maximized their growth on both high-quantity and rich-quality resources but were “sensitive” to the decline in resource quality or quantity. Other “efficient” species were better able to maintain their growth on low quantity or poor-quality resources, and were not sensitive to the decline in resource quantity or quality. Further work by Spencer Hall and colleagues extended this examination to intraspecific variation in individual ability to use resources of different qualities. They found similar variation in terms of powerful and efficient strategies… Advisors/Committee Members: Cáceres, Carla E (advisor), Cáceres, Carla E (Committee Chair), Suarez, Andrew V (committee member), Fuller, Rebecca C (committee member), Heath, Katy D (committee member).

Subjects/Keywords: Intraspecific variation; Power-efficiency trade-off; Juvenile growth rate; Clonal selection; Population dynamics; Sexual reproduction; Dormancy; Cyclic parthenogen; Facultative parthenogen; Fitness-associated sex; Competition; Consumer-resource theory; Daphnia; Daphnia pulicaria; Zooplankton

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

APA (6^th Edition):

Crawford, J. W. (2017). Intraspecific variation in resource use, dormancy investment, and competitive ability in the facultative parthenogen Daphnia pulicaria. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/97583

Chicago Manual of Style (16^th Edition):

Crawford, John Williams. “Intraspecific variation in resource use, dormancy investment, and competitive ability in the facultative parthenogen Daphnia pulicaria.” 2017. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed April 16, 2021. http://hdl.handle.net/2142/97583.

MLA Handbook (7^th Edition):

Crawford, John Williams. “Intraspecific variation in resource use, dormancy investment, and competitive ability in the facultative parthenogen Daphnia pulicaria.” 2017. Web. 16 Apr 2021.

Vancouver:

Crawford JW. Intraspecific variation in resource use, dormancy investment, and competitive ability in the facultative parthenogen Daphnia pulicaria. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/2142/97583.

Council of Science Editors:

Crawford JW. Intraspecific variation in resource use, dormancy investment, and competitive ability in the facultative parthenogen Daphnia pulicaria. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/97583

NSYSU

23. Pan, Ming-Kai. Characteristics comparison between the doped diamond-like carbon with nitrogen and ammonia.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2011, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809111-111003

► Diamond-liked carbon (DLC) film is an important material and has many application in industry. Recently doping impurity into the DLC to change the properties of… (more)

▼ Diamond-liked carbon (DLC) film is an important material and has many application in industry. Recently doping impurity into the DLC to change the properties of DLC thin film is a research topic attracted scientists. In this thesis, DLC films were deposited by plasma-enhanced chemical vapor deposition (PECVD) on the Si wafer and glass. Acetylene was used as the source of carbon, and nitrogen was doped in DLC need too dopants of grow N2 and NH3. The growth mechanism and differences of the nitrogen doped DLC films were studied by methods of NK measurement, SEM and nano indentation. The analysis of nano indentation showed that the hardness and Youngâs Module decreased with increasing N2 flow rate. However, for increased NH3 a flow rate, the hardness and Youngâs Module of DLC were increased. The characteristic peaks of nitrogen doped DLC in the FTIR transmittance spectra were studied, sp2 C=H bond(2945 cm-1), sp3 C-H bond(2910 cm-1), and also the Câ¡N (2200cm-1)and C=N bond(1625cm-1) are observed in DLC. The results of FTIR shows nitrogen was doped into DLC successfully. The DLC thin films thickness was determined by the NK analysis, and it is found the deposition rate of DLC was increased with the increasing flow rate of N2. However, for increased NH3 flow rate, the DLC deposition rate was decreased. From SEM, micrographs the NH3 doped DLC yielded rough morphology. The surface of N2 doped DLC thin film, revealed smoother. A growth mechanism of diamond with different dopant was proposed and explained the properties of DLC thin film with different deposition condition.When N2 was used as dopant source, the N2+ ions were induced by plasma and attracted upward due to the RF self-bias voltage. Therefore ,the surface of thin film was not bombarded due to N2+ ions. On contrast, when the NH3 was used as dopant source, the NH2- ions were produced and distracted downward by the RF self-bias voltage. And then the surface of the thin film was etched by the NH2- ions. Form the XPS analysis, the composition of sp3 C-C(285.4 eV) and sp3 C-N (287.7 eV)were decreased with increased N2 flow rate.However, the composition of sp3 C-C and SP3 C-N were increased with decreasing the NH3 flow rate. The composition of nitrogen in the DLC film increased with higher N2 flow rate. The number of sp2 bond was increased and the hardness was decreased with higher amount of nitrogen in the DLC film. This result is consistent with the nano indentation,FTIR analysis and explained by the ionic transportation growth mechanism model. Advisors/Committee Members: YUAN-CHENG,CIOU (chair), JHEN-FU,JHANG (chair), JIAN-SIANG,JHAO (chair), Tai-Fa,Young (committee member).

Subjects/Keywords: The mechanism of DLC growth by ions transfer in plasma.; Nanoindentation; Surface structure; Doped DLC; Doposition rate

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APA (6^th Edition):

Pan, M. (2011). Characteristics comparison between the doped diamond-like carbon with nitrogen and ammonia. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809111-111003

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):

Pan, Ming-Kai. “Characteristics comparison between the doped diamond-like carbon with nitrogen and ammonia.” 2011. Thesis, NSYSU. Accessed April 16, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809111-111003.

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

MLA Handbook (7^th Edition):

Pan, Ming-Kai. “Characteristics comparison between the doped diamond-like carbon with nitrogen and ammonia.” 2011. Web. 16 Apr 2021.

Vancouver:

Pan M. Characteristics comparison between the doped diamond-like carbon with nitrogen and ammonia. [Internet] [Thesis]. NSYSU; 2011. [cited 2021 Apr 16]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809111-111003.

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

Council of Science Editors:

Pan M. Characteristics comparison between the doped diamond-like carbon with nitrogen and ammonia. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809111-111003

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

Universiteit Utrecht

24. Meulen, M. van der. Parameters influencing body condition score of mares and foals.

Degree: 2013, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/281016

► Introduction: The New Zealand racing industry is a major contributor to the New Zealand economy. The large breeding industry in New Zealand encounters a significant… (more)

▼ Introduction: The New Zealand racing industry is a major contributor to the New Zealand economy. The large breeding industry in New Zealand encounters a significant commercial pressure to produce well grown colt foals for sale, as heavy and tall yearlings are expected to deliver better race performances at an earlier age. Nutrient supply to the fetus is the major regulator of fetal growth, and is dependent of several factors, including placental function and maternal nutrition. Nutritional status of the mare is believed to play a major role in fetal and foal development. Fatness of the horse can be determined by scoring the body condition. It is proposed that high body condition scored mares would produce foals with a higher body condition score than mares with a lower body condition score. Furthermore, parity and gestation length of the mare are also believed to be important factors in determining foal size and body condition at birth. The aim of this study was to determine the associations between mare body condition score, parity, gestation length and foal body condition score, wither height and growth rate. Materials and methods: Data were collected from two Thoroughbred stud farms. Mares and foals were body condition scored before, close after (within 3 days) and weekly up to 6 weeks after foaling. Foals wither height was measured close after birth and at 4 weeks of age. Official breeding data on mare age, mare parity, gestation length and last year of empty season were obtained from NZ Thoroughbred Racing. Pasture height was measured weekly using a rising plate meter and available energy calculated to assess if pastures met mares energy requirements. Results:Mean body condition of mares and foals close after birth was 4.70 ± 1.16 and 5.18 ± 0.81 respectively. Data from the 2009 season tended to show a linear relation between mare BCS (at foaling) and foal BCS (at birth) but this was not significant. The 2010 data were best described with a cubic relationship. However, there was no significance difference between foal BCS from thin mares and foal BCS from moderate mares (p=0.147), nor between foals from moderate and fat mares (p=0.079). There was no correlation found between mare BCS and foal withers height close after birth (p= 0.745). However, we found a significant correlation between mare parity and foal BCS (close after birth) (quadratic, R2=0.092. p=0.037) as well for parity and foals wither height at birth (cubic correlation, R2=0.150, p=0.023). There was a significant difference between foal BCS from primiparous mares and foal BCS from multiparous mares (p=0.001). Furthermore, these data demonstrate that there is a negative correlation between last year empty season and foal BCS at birth (R2 = 0.144, p = 0.001). No correlation was found between gestation length and foal BCS. Mare age did not affect mare and foal parameters. Interestingly, these data show that foals with low BCS (scored close after birth) gain body condition faster than fat foals do (negative linear correlation, R2= -0.301 en… Advisors/Committee Members: Weeren, R. van, Rogers, C..

Subjects/Keywords: Diergeneeskunde; Body condition score (BCS), mares, foals, gestation, grow, growth rate, parity, last year of empty season

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APA (6^th Edition):

Meulen, M. v. d. (2013). Parameters influencing body condition score of mares and foals. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/281016

Chicago Manual of Style (16^th Edition):

Meulen, M van der. “Parameters influencing body condition score of mares and foals.” 2013. Masters Thesis, Universiteit Utrecht. Accessed April 16, 2021. http://dspace.library.uu.nl:8080/handle/1874/281016.

MLA Handbook (7^th Edition):

Meulen, M van der. “Parameters influencing body condition score of mares and foals.” 2013. Web. 16 Apr 2021.

Vancouver:

Meulen Mvd. Parameters influencing body condition score of mares and foals. [Internet] [Masters thesis]. Universiteit Utrecht; 2013. [cited 2021 Apr 16]. Available from: http://dspace.library.uu.nl:8080/handle/1874/281016.

Council of Science Editors:

Meulen Mvd. Parameters influencing body condition score of mares and foals. [Masters Thesis]. Universiteit Utrecht; 2013. Available from: http://dspace.library.uu.nl:8080/handle/1874/281016

Stellenbosch University

25. Rousseau, Le-daan Rheeder. The effects of dietary lipids and antioxidants on growth performance, meat quality and moisture loss of the South African abalone, Haliotis Midae.

Degree: MScAgric, Animal Sciences, 2014, Stellenbosch University

URL: http://hdl.handle.net/10019.1/86753

► ENGLISH ABSTRACT: Abalone has become a high valued commodity globally, with South Africa being one of the largest producers. Haliotis midae is the most important… (more)

▼ ENGLISH ABSTRACT: Abalone has become a high valued commodity globally, with South Africa being one of the largest producers. Haliotis midae is the most important aquaculture species produced in South Africa, and is exported to the Eastern markets in a variety of forms, with live export and canned abalone being the two most important products. To meet the high international demand, abalone farmers need to remain competitive by optimizing growth rate, increase water absorption, and minimising the stress and moisture loss experienced by abalone during the live export period. Stress and moisture loss experienced during export can potentially contribute to a decrease in live weight and meat quality, which in turn will result in lower income generated, which will impact negatively on the cost-efficient production of abalone. No literature is available on reducing moisture loss in live abalone during export. Other factors such as diet composition (which can affect the growth rate of abalone), animal health condition (assessed by weight of the abalone per unit shell length), and meat composition and quality, can also affect the cost-efficient production of abalone. The aim of this study was therefore to determine the amount of moisture loss experienced by adult live abalone that have reached an export size, and to formulate a complete balanced diet that will minimize the moisture loss during export. Aspects that were investigated included a) the effect of diet on the growth rate of abalone, b) the effect of diet composition on moisture loss during live export of abalone, c) the effect of diet on the extent of post mortem and post cooking moisture loss, and d) the effect of diet composition on proximate and chemical composition of abalone meat. This study evaluated the effect of ten diets that differed in terms of their Vitamin E, polyunsaturated fatty acid (PUFA), chromium, and green rooibos content, The diets consisted of Control 1 (Abfeed®), Control 2 (NutroScience), LN (low PUFA with no additives), LM (low PUFA with vitamin E (mixed tocopherols)), LR (low PUFA with green rooibos) and LCr (low PUFA with chromium), HN (high PUFA with no additives), HM (high PUFA with vitamin E (mixed tocopherols)), HR (high PUFA with green rooibos), and HCr (high PUFA with chromium). Sunflower oil was used to formulate the high PUFA treatments, whilst rendered beef fat (tallow) was used to formulate the low PUFA treatments. Animals (n=25) from each treatment was sampled monthly to determine the effect of the different treatments on the growth performance (measured as weight and length gain, average daily gain and specific growth rate in terms of weight and length, feed conversion ratio, and condition factor). Proximate and chemical analyses were performed on the abalone meat post mortem to determine the effect of diet composition on moisture loss, water retention, and drip loss. Varying results were obtained for the high and low PUFA diets with added antioxidants, and it was suggested that PUFA levels and antioxidants did not play a… Advisors/Committee Members: Hoffman, L. C., De Wet, L. F., O Neill, B., Stellenbosch University. Faculty of AgriSciences. Dept. of Animal Sciences..

Subjects/Keywords: Abalone (Haliotis Midae); Abalone – Moisture loss; Abalone growth rate – Effect of diet on; Abalone – Chemical composition; UCTD

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APA (6^th Edition):

Rousseau, L. R. (2014). The effects of dietary lipids and antioxidants on growth performance, meat quality and moisture loss of the South African abalone, Haliotis Midae. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/86753

Chicago Manual of Style (16^th Edition):

Rousseau, Le-daan Rheeder. “The effects of dietary lipids and antioxidants on growth performance, meat quality and moisture loss of the South African abalone, Haliotis Midae.” 2014. Masters Thesis, Stellenbosch University. Accessed April 16, 2021. http://hdl.handle.net/10019.1/86753.

MLA Handbook (7^th Edition):

Rousseau, Le-daan Rheeder. “The effects of dietary lipids and antioxidants on growth performance, meat quality and moisture loss of the South African abalone, Haliotis Midae.” 2014. Web. 16 Apr 2021.

Vancouver:

Rousseau LR. The effects of dietary lipids and antioxidants on growth performance, meat quality and moisture loss of the South African abalone, Haliotis Midae. [Internet] [Masters thesis]. Stellenbosch University; 2014. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/10019.1/86753.

Council of Science Editors:

Rousseau LR. The effects of dietary lipids and antioxidants on growth performance, meat quality and moisture loss of the South African abalone, Haliotis Midae. [Masters Thesis]. Stellenbosch University; 2014. Available from: http://hdl.handle.net/10019.1/86753

26. Vedegytė, Vaida. Ūkio dydžio įtaka avių produktyvumui.

Degree: Master, Zootechny, 2014, Lithuanian Academic Libraries Network (LABT)

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140618_233058-29401 ;

►

Temos aktualumas. Avininkystė Lietuvoje yra svarbi žemės ūkio sritis. Šio sektoriaus plėtrai šalyje yra palankios gamtinės sąlygos, susiformavusios gyvulių auginimo tradicijos, sukaupta patirtis. Gyvulininkystės sektorius… (more)

▼

Temos aktualumas. Avininkystė Lietuvoje yra svarbi žemės ūkio sritis. Šio sektoriaus plėtrai šalyje yra palankios gamtinės sąlygos, susiformavusios gyvulių auginimo tradicijos, sukaupta patirtis. Gyvulininkystės sektorius yra daugiašakė ir įvairiapuse produkcija pasižyminti veikla, reikšminga Lietuvos gyventojams daugeliu ekonominių ir socialinių aspektų. Šis sektorius yra reikšmingas, aprūpinant Lietuvos vartotojus įvairiais maisto produktais bei svarbus Lietuvos eksporto šaltinis. Gyvūninės kilmės produktai yra svarbi subalansuotos mitybos dalis. Juose yra daug žmogaus organizmui reikalingų maisto medžiagų, vitaminų ir mineralų. Lietuvos Respublikos žemės ūkis atlieka svarbią ekonominę, socialinę, gamtosauginę ir etnokultūrinę funkciją, todėl laikomas prioritetine ūkio šaka. Jis pajėgus aprūpinti šalies gyventojus visais kokybiškais maisto produktais ir dalį jų eksportuoti. Nors ir lėtai, avininkystės sektorius plečiasi. Auga mėsos paklausa, atsigauna ir vilnos bei kailių perdirbėjai. Vidutinis avių ūkis Lietuvoje, palyginti su vakarų šalimis, dar yra labai mažas. Dauguma augintojų laiko nedaug avių. O tų žmonių, kuriems avininkystė yra verslas, tėra vos kelios dešimtys. Tačiau mažieji augintojai pamažu didina savo bandas. Įdiegus pažangias intensyvaus avių auginimo technologijas, auginant perspektyvias krypties avių veisles, galima tikėtis šio verslo sėkmės. Darbo objektas: skirtingą skaičių avių turintys ūkiai. Darbo tikslas: išanalizuoti ūkio dydžio įtaką avių... [toliau žr. visą tekstą]

Relevance of the thesis. Shepherding has an important place in Lithuania‘s agriculture. There are suitable enviromental conditions, established cattle herding traditions and accumulated experience needed for this sector‘s further development in the country. The area of animal husbandry is activity known for its multisectoral and multifaceted production, many aspects of which has great economical and social significance for Lithuanians. This area is also very significant when providing Lithuanian consumer with eatables, furthermore it is very important branch of Lithuania‘s export. Products of animal origin takes big part in a balanced diet. They contain many components, vitamins and minerals which human body requires daily. Husbandry has important economical, social, enviromental and ethnocultural function in the Republic of Lithuania, thus it has priority in Lithuania‘s economy. It has capability not only to provide quality eatables for citizens, but also to export some. Sheepherding sector is growing, even though the growth rate is not very pronounced. The demand for meat grows; wool and fur processors are recovering. In Lithuania average sheep farm is very small when comparing with farms in other western countries. Most livestock owners don‘t have a lot of sheep. Furthermore, there are only few who make business out of it. However the small farmers seem to be increasing their flocks. If this business were introduced to advanced sheep herding technologies as well as... [to full text]

Advisors/Committee Members: Juškienė, Violeta (Master’s degree committee chair), Juozaitienė, Vida (Master’s degree committee member), Gružauskas, Romas (Master’s degree committee member), Miceikienė, Ilona Teodora (Master’s degree committee member), Bakutis, Bronius (Master’s degree committee member), Černauskienė, Janina (Master’s degree committee member), Kerzienė, Sigita (Master’s degree committee member), Kauzonienė, Ilona (Master’s degree committee member), Šimkienė, Aldona (Master’s degree session secretary), Šimkiene, Aldona (Master’s thesis supervisor).

Subjects/Keywords: Ėriavedė; Avis; Avių produktyvumas; Skerdenos išeiga; Vilna; Sheep fertility; Ewe; Sheep productiveness; Growth rate of lambs; Wool

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

APA (6^th Edition):

Vedegytė, Vaida. (2014). Ūkio dydžio įtaka avių produktyvumui. (Masters Thesis). Lithuanian Academic Libraries Network (LABT). Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140618_233058-29401 ;

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

Chicago Manual of Style (16^th Edition):

Vedegytė, Vaida. “Ūkio dydžio įtaka avių produktyvumui.” 2014. Masters Thesis, Lithuanian Academic Libraries Network (LABT). Accessed April 16, 2021. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140618_233058-29401 ;.

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

MLA Handbook (7^th Edition):

Vedegytė, Vaida. “Ūkio dydžio įtaka avių produktyvumui.” 2014. Web. 16 Apr 2021.

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

Vancouver:

Vedegytė, Vaida. Ūkio dydžio įtaka avių produktyvumui. [Internet] [Masters thesis]. Lithuanian Academic Libraries Network (LABT); 2014. [cited 2021 Apr 16]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140618_233058-29401 ;.

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

Council of Science Editors:

Vedegytė, Vaida. Ūkio dydžio įtaka avių produktyvumui. [Masters Thesis]. Lithuanian Academic Libraries Network (LABT); 2014. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140618_233058-29401 ;

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

27. Aldroe, Hassan. Contribution au développement des techniques de marker-bands en fatigue : Contribution to developpement of marker bands en fatigue.

Degree: Docteur es, Mécanique, 2012, Université François-Rabelais de Tours

URL: http://www.theses.fr/2012TOUR4026

►

Les surfaces de rupture par fatigue peuvent représenter les aspects complexes en fonction de: type de matériau, le mécanisme de condition de sollicitations mécaniques, environnement… (more)

▼

Les surfaces de rupture par fatigue peuvent représenter les aspects complexes en fonction de: type de matériau, le mécanisme de condition de sollicitations mécaniques, environnement ambiant etc.Dans le cadre des chargements complexes ou variables les surfaces de rupture sont encore plus difficiles à analyser, car de telles sollicitations peuvent engendrer les changements de mécanismes dans certains matériaux.Dans le cadre de changements variables, l'une des questions importantes est la connaissance de la vitesse de croissance des fissures.Des techniques actuelles de mesures de vitesse font appel aux mesures optiques ou aux mesures indirectes de mesures de la cinétique de croissance de fissures.Une méthode élégante consiste à faire des cycles marqueurs qui permettent de laisser une marque sur la surface de rupture que l'on ensuite identifier par analyse au microscope à balayage.A cette fin on peut utiliser : - les petites surcharges, les sous charges, les cycles en dessous du seuil de non propagation, un changement de température etc.Le but de travail de thèse serait de développer les cycles marqueurs sur trois matériaux:un alliage d'aluminium, un acier et un caoutchouc synthétique.L'idée étant de développer des cycles de marquage sans modifier le cinétique de propagation.Les essais comparatifs de fissuration seront menés avec ou sans cycles de marquage pour vérifier cette hypothèse.Le travail expérimental sera effectué au LMR (machine de fatigue) ainsi que l'analyse MEB.

The fracture surfaces of fatigue can represent complex aspects according to:type of material, provided mechanism of mechanical stresses, ambient environment, etc.Under complex loadings or variable ones, fracture surfaces are more difficult to analyze because such changes can cause change in mechanisms in certain materials.Under variable amplitudes, one of the important issues is the knowledge of the crack growth rate.Current techniques involve optical measurements or indirect ones that measures the kinetics of crack growth.An elegant method is to generate marker bands that can leave a mark on the fracture surface which is then identified by scanning electron microscope analysis.For this purpose one can use: - small overload, under load, cycles below the threshold, a change of temperature, etc.The aim of this thesis is to develop the technique of marker bands on three materials:an aluminum alloy, steel and synthetic rubber.The idea is to develop this technique without changing the propagation kinetics.The experiments will be conducted by fatigue cracking with or without marking marker bands to test this hypothesis.The experimental work has been carried out in LMR laboratory.

Advisors/Committee Members: Ranganathan, Narayanaswami (thesis director), Tougui, Abdellah (thesis director), Lacroix, Florian (thesis director).

Subjects/Keywords: Fatigue des matériaux; Vitesse de propagation de fissure; Durée de vie; Fatigue of materials; Crack growth rate; Life cycle

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APA (6^th Edition):

Aldroe, H. (2012). Contribution au développement des techniques de marker-bands en fatigue : Contribution to developpement of marker bands en fatigue. (Doctoral Dissertation). Université François-Rabelais de Tours. Retrieved from http://www.theses.fr/2012TOUR4026

Chicago Manual of Style (16^th Edition):

Aldroe, Hassan. “Contribution au développement des techniques de marker-bands en fatigue : Contribution to developpement of marker bands en fatigue.” 2012. Doctoral Dissertation, Université François-Rabelais de Tours. Accessed April 16, 2021. http://www.theses.fr/2012TOUR4026.

MLA Handbook (7^th Edition):

Aldroe, Hassan. “Contribution au développement des techniques de marker-bands en fatigue : Contribution to developpement of marker bands en fatigue.” 2012. Web. 16 Apr 2021.

Vancouver:

Aldroe H. Contribution au développement des techniques de marker-bands en fatigue : Contribution to developpement of marker bands en fatigue. [Internet] [Doctoral dissertation]. Université François-Rabelais de Tours; 2012. [cited 2021 Apr 16]. Available from: http://www.theses.fr/2012TOUR4026.

Council of Science Editors:

Aldroe H. Contribution au développement des techniques de marker-bands en fatigue : Contribution to developpement of marker bands en fatigue. [Doctoral Dissertation]. Université François-Rabelais de Tours; 2012. Available from: http://www.theses.fr/2012TOUR4026

Brno University of Technology

28. Pecka, Luboš. Modelování dynamiky populací: Modeling of population dynamics.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/2630

► The aim of this thesis is to describe the basic models of the population dynamics. In the first part of the thesis, the models which… (more)

Subjects/Keywords: Matematický model; populace; specifická míra růstu; stacionární bod.; Mathematical model; population; specific rate of growth; stationary point.

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APA (6^th Edition):

Pecka, L. (2019). Modelování dynamiky populací: Modeling of population dynamics. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/2630

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):

Pecka, Luboš. “Modelování dynamiky populací: Modeling of population dynamics.” 2019. Thesis, Brno University of Technology. Accessed April 16, 2021. http://hdl.handle.net/11012/2630.

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

MLA Handbook (7^th Edition):

Pecka, Luboš. “Modelování dynamiky populací: Modeling of population dynamics.” 2019. Web. 16 Apr 2021.

Vancouver:

Pecka L. Modelování dynamiky populací: Modeling of population dynamics. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/11012/2630.

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

Council of Science Editors:

Pecka L. Modelování dynamiky populací: Modeling of population dynamics. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/2630

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

Brno University of Technology

29. Kander, Jan. Vliv asymetrie zátěžného cyklu na rychlost šíření únavových trhlin ve slitině Inconel 625: Influence of asymmetry loading cycle on fatigue crack growth of alloy Inconel 625.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/176913

► The main subject of this bachelor thesis was to evaluate influence of asymmetry of loading cycle on fatigue crack growth rate in a nickel-based superalloy… (more)

Subjects/Keywords: Inconel 625; rychlost šíření trhlin; asymetrie zátěžného cyklu; mechanické vlastnosti; Inconel 625; crack growth rate; asymmetry of loading cycle; mechanical properties

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APA (6^th Edition):

Kander, J. (2019). Vliv asymetrie zátěžného cyklu na rychlost šíření únavových trhlin ve slitině Inconel 625: Influence of asymmetry loading cycle on fatigue crack growth of alloy Inconel 625. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/176913

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):

Kander, Jan. “Vliv asymetrie zátěžného cyklu na rychlost šíření únavových trhlin ve slitině Inconel 625: Influence of asymmetry loading cycle on fatigue crack growth of alloy Inconel 625.” 2019. Thesis, Brno University of Technology. Accessed April 16, 2021. http://hdl.handle.net/11012/176913.

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

MLA Handbook (7^th Edition):

Kander, Jan. “Vliv asymetrie zátěžného cyklu na rychlost šíření únavových trhlin ve slitině Inconel 625: Influence of asymmetry loading cycle on fatigue crack growth of alloy Inconel 625.” 2019. Web. 16 Apr 2021.

Vancouver:

Kander J. Vliv asymetrie zátěžného cyklu na rychlost šíření únavových trhlin ve slitině Inconel 625: Influence of asymmetry loading cycle on fatigue crack growth of alloy Inconel 625. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Apr 16]. Available from: http://hdl.handle.net/11012/176913.

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

Council of Science Editors:

Kander J. Vliv asymetrie zátěžného cyklu na rychlost šíření únavových trhlin ve slitině Inconel 625: Influence of asymmetry loading cycle on fatigue crack growth of alloy Inconel 625. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/176913

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

30. Sun, Yunhao. The Impact of Macroeconomic Factors on the Price of Gold.

Degree: 2018, Buffalo State College

URL: https://digitalcommons.buffalostate.edu/economics_theses/34

► My thesis is that macro factors have been important to the change of the gold price, but have had a differential impact in three factors:… (more)

Subjects/Keywords: Gold; Gross Global Product; Rate of Interest; Inflation; U.S. Dollar Index; OLS Regression; Econometrics; Growth and Development; Macroeconomics

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

APA (6^th Edition):

Sun, Y. (2018). The Impact of Macroeconomic Factors on the Price of Gold. (Thesis). Buffalo State College. Retrieved from https://digitalcommons.buffalostate.edu/economics_theses/34

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):

Sun, Yunhao. “The Impact of Macroeconomic Factors on the Price of Gold.” 2018. Thesis, Buffalo State College. Accessed April 16, 2021. https://digitalcommons.buffalostate.edu/economics_theses/34.

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

MLA Handbook (7^th Edition):

Sun, Yunhao. “The Impact of Macroeconomic Factors on the Price of Gold.” 2018. Web. 16 Apr 2021.

Vancouver:

Sun Y. The Impact of Macroeconomic Factors on the Price of Gold. [Internet] [Thesis]. Buffalo State College; 2018. [cited 2021 Apr 16]. Available from: https://digitalcommons.buffalostate.edu/economics_theses/34.

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

Council of Science Editors:

Sun Y. The Impact of Macroeconomic Factors on the Price of Gold. [Thesis]. Buffalo State College; 2018. Available from: https://digitalcommons.buffalostate.edu/economics_theses/34

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

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