Rozprawy doktorskie na temat „Crystals size”
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Norfleet, David Matthew. "Sample size effects related to nickel, titanium and nickel-titanium at the micron size scale". Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1187038020.
Pełny tekst źródłaTavana-Roudsari, Aria 1962. "FEEDBACK CONTROL OF CRYSTAL-SIZE DISTRIBUTION IN A POTASSIUM-CHLORIDE CRYSTALLIZER BY ESTIMATION OF NUCLEI DENSITY". Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/291283.
Pełny tekst źródłaEl-Awady, Jaafar Abbas. "Size effects on plasticity and fatigue microstructure evolution in FCC single crystals". Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1693067871&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
Pełny tekst źródłaKok, Mei Yeng. "Orientation of molecular solutes in nematic liquid crystals : size and shape effects". Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/25911.
Pełny tekst źródłaScience, Faculty of
Chemistry, Department of
Graduate
Becker, Martin. "Incompatibility and instability based size effects in crystals and composites at finite elastoplastic strains". Stuttgart Inst. für Mechanik (Bauwesen), 2006. http://deposit.d-nb.de/cgi-bin/dokserv?idn=980579732.
Pełny tekst źródłaHutt, James. "The origin of equiaxed crystals and the grain size transition in aluminium-silicon alloys /". St. Lucia, Qld, 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16244.pdf.
Pełny tekst źródłaChang, Li-Wu. "Revealing fundamental aspects of size effects in ferroelectrics through experiments on fiber single crystals". Thesis, Queen's University Belfast, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527668.
Pełny tekst źródłaDemir, Eralp [Verfasser]. "Constitutive modeling of fcc single crystals and experimental study of mechanical size effects / Eralp Demir". Aachen : Shaker, 2010. http://d-nb.info/1104047683/34.
Pełny tekst źródłaPessina, Florent. "Toward particle size reduction by spray flash evaporation : the case of organic energetic crystals and cocrystals". Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAE031/document.
Pełny tekst źródłaThe continuous formation of nanosized energetic material is a long-standing challenge. Spray Flash Evaporation (SFE) is a major technique, internally developed and patented, for continuously producing energetic materials at submicron or nano scale; it relies on the superheating of a solvent sprayed into vacuum and thus flashing. This present research project aims to understand and control the crystallisation occurring in the SFE process. RDX and the cocrystal CL-20:HMX 2:1 was studied overcome the limited in situ characterizations also. The supersaturation is a function of time and space in SFE, linked to the size distribution and velocity of droplets. Supersaturation was raised with an anti-solvent and by the enhancement of the SFE with a dual nozzle system. Then PVP 40K and PEG 400 were successfully used to alter the nucleation and the growth. The particles were subsequently tuned from 160 nm spheres to 5 µm grains and were less sensitive, especially toward electrostatic discharge
Synnatschke, Kevin [Verfasser], i Claudia [Akademischer Betreuer] Backes. "Liquid phase exfoliation and size dependent properties of van der Waals crystals / Kevin Synnatschke ; Betreuer: Claudia Backes". Heidelberg : Universitätsbibliothek Heidelberg, 2021. http://d-nb.info/1229695400/34.
Pełny tekst źródłaKim, Gyu Seok. "Small volume investigation of slip and twinning in magnesium single crystals". Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENI072/document.
Pełny tekst źródłaA combined experimental and computational investigation of the deformation behavior of pure magnesium single crystal at the micron length scale has been carried out. Employing the recently exploited method of microcompression testing, uniaxial microcompression experiments have been performed on magnesium single crystals with [0001], [2-1-12], [10-11], [11-20] and [10-10] compression axes. The advantage of the microcompression method over conventional mechanical testing techniques is the ability to localize a single crystalline volume which is characterizable after deformation. The stress-strain relations resulting from microcompression experiments are presented and discussed in terms of orientation dependent slip activity, twinning mechanisms and an anisotropic size effect. Such a mechanistic picture of the deformation behavior is revealed through SEM, EBSD and TEM characterization of the deformation structures, and further supported by 3D discrete dislocation dynamics simulations. The [0001], [2-1-12], and [10-11] compression axes results show dislocation plasticity. Specifically, the deformation due to [0001] compression is governed by pyramidal slip and displays significant hardening and massive unstable shear at stresses above 500MPa. In the case of the two orientations with compression along an axis 45 degrees to the basal plane, unsurpringly it is found that basal slip dominates the deformation. In contrast, compression along the [11-20] and [10-10] directions show deformation twinning in addition to dislocation plasticity. In the case of compression along [11-20], the twinning leads to easy basal slip, while the twin resultant during compression along [10-10] does not lead to easy basal slip. In all cases, a size effect in the stress-strain behavior is observed; the flow stress increases with decreasing column diameter. Furthermore, the extent of the size effect is shown to depend strongly on the number of active slip systems; compression along the [0001] axis is associated with 12 slips systems and displays a saturation of the size effect at a diameter of 10μm, while the other orientations still show a significant size effect at this diameter. The experimental evidence of an orientation-dependent deformation behavior in flow stress has been investigated by 3D discrete dislocation dynamics simulations. Here, the code TRIDIS was modified for hcp structure and c/a ratio of Mg. By matching the simulation results to experimental results, some proper constitutive material parameters such as initial dislocation density, dislocation source length, the critical resolved shear stress were suggested. For the case of [0001] and [2-1-12] orientation, dislocation feature in the pillar during the deformation was exhibited and strain burst was discussed
Shariare, Mohammad Hossain. "The rational design of drug crystals to facilitate particle size reduction : investigation of crystallisation conditions and crystal properties to enable optimised particle processing and comminution". Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5395.
Pełny tekst źródłaShariare, Mohammad H. "The rational design of drug crystals to facilitate particle size reduction. Investigation of crystallisation conditions and crystal properties to enable optimised particle processing and comminution". Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5395.
Pełny tekst źródłaCharmolue, Herve. "The effects of process variables on purity, size, and habit of L-serine crystals recovered by batch crystallization". Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/11163.
Pełny tekst źródłaZhou, Meijuan. "Development of novel nanostructured polymer membranes based on polymerizable lyotropic liquid crystals for aqueous molecular-size selective separations". Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3239419.
Pełny tekst źródłaKim, Gyu seok. "Small volume investigation of slip and twinning in magnesium single crystals". Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00721838.
Pełny tekst źródłaKimble, Walter Lee. "Effect of mineral substrates on nucleation, size, morphology, and purity of chicken egg-white lysozyme crystals obtained from vapor diffusion". Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/11267.
Pełny tekst źródłaBecker, Martin [Verfasser]. "Incompatibility and instability based size effects in crystals and composites at finite elastoplastic strains / Institut für Mechanik (Bauwesen) der Universität Stuttgart. Vorgelegt von Martin Becker". Stuttgart : Inst. für Mechanik (Bauwesen), 2006. http://d-nb.info/980579732/34.
Pełny tekst źródłaPERIGO, ELIO A. "Estudo das correlacoes entre microestrutura propriedades magneticas e fator de quadratura em imas sinterizadas de PrFeB e NdFeB processados com hidrogenio". reponame:Repositório Institucional do IPEN, 2009. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9423.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
FAPESP:05/04711-2
Park, Jun Gwan. "Characteristic behavior of a side branch in a dendritic crystal growth". Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1187198212.
Pełny tekst źródłaSimon, Darren, i s3027589@student rmit edu au. "Chemistry and Morphology of Polymer Thin Films for Electro-Optical Application". RMIT University. Applied Sciences, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20070123.122707.
Pełny tekst źródłaPandey, Rajiv 1967. "Crystal size manipulation of acetaminophen via recrystallization". Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/278344.
Pełny tekst źródłaKuylenstierna, Elin. "The Crystal Size Distribution of Cerro Bayo". Thesis, Uppsala universitet, Mineralogi, petrologi och tektonik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354154.
Pełny tekst źródłaFör att kunna förstå den komplexa strukturen hos magmatiska system under vulkaner måste man studera olika texturer som påträffas i de magmatiska bergarter producerade av vulkanen i fråga. Genom att göra detta kan man få en inblick i de processer som resulterade i den slutgiltiga bergarten. En av de viktigaste metoderna att använda sig av för att studera stenprov är kristallstorleksfördelningen (CSD), som kan avslöja en mängd viktig information om bergarten och kristallernas historia under sin färd i magman. En slocknad vulkan vid namn Chachahuén belägen i Argentina, Sydamerika, valdes ut för denna studie. Stenprover samlades från en av dess lakkoliter med namnet Cerro Bayo, och identifierades som hornblände-bärande dacit. Skillnaden i kristallstorleken var mycket markant, med både större och mindre kristaller inbäddade i samma matrix. Detta är intressant med tanke på att stora kristaller bildas under en långsam nedkylning av magma medan mindre kristaller bildas när magma kyls ner snabbt. Genom att studera CSD och tolka andra texturer som finns hos magmatiska stenprover kan man tolka olika processer som har påverkat kristallerna, vilket i sin tur indikerar hur strukturen av magmakammaren en gång såg ut.
Fromm, Bradley S. "Incorporating grain size effects in Taylor crystal plasticity /". Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2261.pdf.
Pełny tekst źródłaFromm, Bradley S. "Incorporating Grain Size Effects in Taylor Crystal Plasticity". BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/1275.
Pełny tekst źródłaTSURUOKA, SYUJI. "DYNAMICS AND FEEDBACK CONTROL OF CRYSTAL SIZE DISTRIBUTION IN A CONTINUOUS CRYSTALLIZER". Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183847.
Pełny tekst źródłaLee, Michael Siew Khay. "Side chain liquid crystal polysiloxanes". Thesis, University of Hull, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384846.
Pełny tekst źródłaChristie, David W. "Alternating copolymers containing side-chain liquid crystal groups". Thesis, University of Aberdeen, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311158.
Pełny tekst źródłaElliott, Alice Margaret Sophie. "The physical structure of a system of mesogenic side chain polymers". Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388435.
Pełny tekst źródłaYoo, Hyun Seung. "Color Illusions on Liquid Crystal Displays and Design Guidelines for Information Visualization". Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/36372.
Pełny tekst źródłaThe influence of color on size and depth perception has been explored for a century, but there is very limited research on interventions that can reduce the color illusions. This study was motivated to identify interventions and propose design guidelines for information visualization, especially where size judgment is critical.
This study replicated the color size illusion and color depth illusion on an LCD monitor and it was found that yellow is the smallest and farthest color among red, yellow, green, and blue on a white background. Three types of interventions (background brightness, border color, and background grid brightness) were tested to identify the conditions that reduce the color illusions, but all of them were not statistically significant.
Based on the experiment results and literature survey, design guidelines were proposed. To extend the guidelines to the bioinformatics field, design recommendations were proposed and implementation examples were illustrated. Evaluations on design implementations were evaluated by interviewing domain experts.
Additionally, the relationship between the color size illusion and the color depth illusion was explored.
Master of Science
Sharnez, Rizwan 1960. "Dynamic simulation and control of crystal-size distribution in a continuous crystallizer". Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/558079.
Pełny tekst źródłaJohnson, Jeffrey L. "Multivariable control of the crystal size distribution in an MSMPR crystallizer". Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/11245.
Pełny tekst źródłaHartman, R. M. "Pyrolitic graphite films : Their preparation, crystal size, orientation and other properties". Thesis, Lancaster University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377389.
Pełny tekst źródłaDemiral, Murat. "Enhanced gradient crystal-plasticity study of size effects in B.C.C. metal". Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/11634.
Pełny tekst źródłaLiu, Xiao-Hua. "Calamitic octahedral manganese(I) and rhenium(I) metallomesogens and side chain liquid crystalline poly(ferrocenylsilanes)". Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264433.
Pełny tekst źródłaWaigh, Thomas Andrew. "The structure and side-chain liquid-crystalline polymeric properties of starch". Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284951.
Pełny tekst źródłaPatchigolla, Kumar. "Particle process measurements : shape and size with crystal growth and nucleation kinetics". Thesis, Heriot-Watt University, 2007. http://hdl.handle.net/10399/2088.
Pełny tekst źródłaRostron, Paul. "Synthesis of novel side chain liquid crystal polymers". Thesis, Northumbria University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245238.
Pełny tekst źródłaTalari, Kiran. "LIQUID CRYSTAL THERMOGRAPHY STUDIES IN WATER POOL BOILING AT SUBATMOSPHERIC PRESSURES". Master's thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3388.
Pełny tekst źródłaM.S.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Mechanical Engineering
Park, Kyoungweon. "Synthesis, Characterization, and Self-Assembly of Size Tunable Gold Nanorods". Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14035.
Pełny tekst źródłaSinangil, Mehmet Selcuk. "Estimation of crystal size and inhomogeneous strain in polymers using single peak analysis". Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19096.
Pełny tekst źródłaLi, Jicong Ph D. Massachusetts Institute of Technology. "Novel continuous crystallization configurations for improved yield, purity and controlled crystal size distribution". Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104210.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references.
Continuous crystallization process has potential advantages such as lower cost and improved flexibility in pharmaceutical production when compared to batch crystallization. A good continuous crystallization process should achieve a high product yield and purity comparable to current batch crystallization processes. The aim of this thesis is to develop novel continuous crystallization process to enhance the final yield while control the quality of the crystal product. Three different approaches were studied: (1) the use of continuous solids recycle to enhance the yield by increasing the crystal surface area and total crystal mass deposition; (2) the optimization of multistage continuous mixed-suspension, mixed-product removal (MSMPR) crystallization to minimize the number of stages and total residence time; (3) the combination of impurity complexation and organic solvent nanofiltration to remove the impurity that has similar molecular weight and structure to the active pharmaceutical ingredient (API). For the first two approaches, continuous crystallization processes of cyclosporine were developed. The first method, solids recycle, successfully increased the surface area of crystals in the crystallizer thus increasing the mass deposition rate. With solids recycle to the second stage and both stages, 75.3% and 79.8% in yield were achieved, respectively. The product purity remained the same while the yield was enhanced. The second method proved that optimization of stage conditions could help obtain high yield and purity within short residence time. Different behaviors of the impurities were investigated and the impurity distribution model helped estimate the highest product purity achievable of the process. The results showed that optimization in stage number and stage temperatures could improve the yield close to the batch yield at equilibrium. In the third method, fenofibrate and fenofibric acid system with 1,3-di-otolylguanidine (DOTG) as complexing agent was studied. Complexing agent firstly formed hydrogen bonds with the impurity specifically, thus reduced the structure similarity of the API and impurity. It became more difficult for the impurity molecules to incorporate into the API crystal lattice. Then organic solvent nanofiltration membrane separated the API and complex in the mother liquor. By recycling the purified mother liquor back to the crystallizer, the final yield of the process was improved.
by Jicong Li.
Ph. D.
Lupica, Spagnolo Lucia. "Supramolecular templating agents and metal organic frameworks : control over crystal size and assembly". Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/401110/.
Pełny tekst źródłaBorsos, Akos. "Modelling and control of crystal purity, size and shape distributions in crystallization processes". Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/25478.
Pełny tekst źródłaChang, Hyung-Jun. "Analysis of nano indentation size effect based on dislocation dynamics and crystal plasticity". Grenoble INPG, 2009. http://www.theses.fr/2009INPG0134.
Pełny tekst źródłaThis thesis deals with experiments and simulations of nanoindentation in copper single crystals. Indentation experiments are performed with different orientations of the indentation axis and both the load-displacement curve and the surface imprint observed by atomic force microscopy are analysed and compared. Indentation size effect is observed for low penetration of the indenter. Simulations are then performed using crystal plasticity finite element modelling. ABAQUS user subroutines are specially developed in order to account for the physics of dislocation activity in the twelve glide systems of copper crystals. 3D simulations are then performed and comparisons with the experiments give access to key parameters of the constitutive equations. The indentation size effect is reproduced using a simplified size effect theory implanted in the finite element modelling. Finally, a multiscale approach based on discrete dislocation dynamics is used to reproduce (111) indentations of copper single crystals. Molecular dynamics simulations give details of dislocation nucleation beneath the indenter. Dislocation dynamics simulations are then performed and the indentation size effect is addressed
Parulekar, Sumedh. "A novel approach to manipulate cavity size In resorcinarenes". [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001810.
Pełny tekst źródłaBuxton, Peter. "Synthesis of side-chain liquid crystal polymers by cyclopolymerisation". Thesis, University of Hull, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297391.
Pełny tekst źródłaAl-Ammar, Khalid Hassan Bader. "Electro-optic phenomena in side-chain liquid crystal polymers". Thesis, University of Reading, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279707.
Pełny tekst źródłaCraig, Aileen A. "Structure-property relationships in side chain liquid crystal polymers". Thesis, University of Aberdeen, 1996. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU551561.
Pełny tekst źródłaShade, Paul A. "Small Scale Mechanical Testing Techniques and Application to Evaluate a Single Crystal Nickel Superalloy". The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1228103042.
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