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Dissertations / Theses on the topic 'Co-crystalline'

Author: Grafiati

Published: 10 March 2023

Last updated: 31 July 2025

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1

Fasano, Gianluca. "Polymorphism and co-crystalline phases of polymers." Doctoral thesis, Universita degli studi di Salerno, 2012. http://hdl.handle.net/10556/296.

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2010 - 2011<br>Crystalline phases are extremely relevant for properties and applications of many polymeric materials. In fact, their amount, structure and morphology constitute the main factors controlling physical properties of fibers, films and thermoplastics and can be also relevant for properties of rubbers and gels. It is also well known that processing and physical properties of polymer-based materials are strongly affected by the occurrence of polymorphism (i.e. the possibility for a given polymer to crystallize in different crystalline forms) and mesomorphism (i.e. the occurrence

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2

Ianniello, Graziella. "Polymeric films with co-crystalline and nanoporous crystalline phases: orientations, chirality and possible applications in photonic crystals." Doctoral thesis, Universita degli studi di Salerno, 2015. http://hdl.handle.net/10556/2015.

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2013 - 2014<br>Polymers can crystallize in different crystalline forms; polymorphism is the term to indicate this ability. It is known that processing and physical properties of polymer-based materials are strongly affected by the occurrence of ‘‘polymorphism’’ and ‘‘metamorphism’’ (i.e., the occurrence of ‘‘disordered’’ crystalline phases, characterized by a degree of structural organization that is intermediate between those identifying crystalline and amorphous phases). My PhD thesis is focused on the study and on the characterization of polymer films with co-crystalline and nanoporous

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3

Zhou, Bo. "Synthesis and characterization of crystalline assembly of poly Nisopropylacry-lamide)-co-acrylic acid nanoparticles." Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4671/.

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In this study, crystalline poly(N-isopropylacrylamide-co-acrylic acid) (PNIPAm-co-AAc) nanoparticle network in organic solvents was obtained by self assembling precursor particles in acetone/epichlorohydrin mixture at room temperature followed by inter-sphere crosslinking at ~98 °C. The crystals thus formed can endure solvent exchanges or large distortions under a temporary compressing force with the reoccurrence of crystalline structures. In acetone, the crystals were stable, independent of temperature, while in water crystals could change their colors upon heating or changing pH values. By p

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4

Wehner, Arno. "Growth and characterization of thin Al2O3 and Ga2O3 films on single-crystalline Ni, Co, and CoGa substrates." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971538360.

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5

Maulny, Aurélia. "Preparation and applications in confectionery of co-crystalline sugar products and a novel hydrated form of sucrose." Thesis, University of Hull, 2003. http://hydra.hull.ac.uk/resources/hull:8067.

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The formation of the solid crystalline phase of sugars plays an important role in many food products. The conventional crystallisation of sucrose gives solid, dense cubic crystals that have a limited surface area. On the other hand, co-crystallisation of sucrose is a process where a second ingredient is added to a supersaturated sucrose solution before crystallisation. The crystals obtained reveal a sponge-like appearance with considerable void space and interstices with the additive ingredient located in these interstices. The crystalline sugar products are said to be dry, granular, free-flow

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6

Hamm, Marc. "Dynamic mean field simulations of liquid crystalline and amorphous (co)polymers : building a model for polymer joining." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619528.

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7

Berner, Tim, and Klaus-Dieter Becker. "Electrical conductivity relaxation experiments on single crystalline cobalt silicate Co 2 SiO 4 by using impedance spectroscopy." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-186788.

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8

Berner, Tim, and Klaus-Dieter Becker. "Electrical conductivity relaxation experiments on single crystalline cobalt silicate Co 2 SiO 4 by using impedance spectroscopy." Diffusion fundamentals 12 (2010) 45, 2010. https://ul.qucosa.de/id/qucosa%3A13885.

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9

Nanna, Saverio <1985&gt. "Optimization of molecular and crystalline forms of drugs, agrochemicals, pesticides in relation to activity, bioavailability, patentability and to the fabrication of polymorphs, solvates, co-crystals with green chemistry methods." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7050/1/Nanna_Saverio_Tesi.pdf.

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This doctorate was funded by the Regione Emilia Romagna, within a Spinner PhD project coordinated by the University of Parma, and involving the universities of Bologna, Ferrara and Modena. The aim of the project was: - Production of polymorphs, solvates, hydrates and co-crystals of active pharmaceutical ingredients (APIs) and agrochemicals with green chemistry methods; - Optimization of molecular and crystalline forms of APIs and pesticides in relation to activity, bioavailability and patentability. In the last decades, a growing interest in the solid-state properties of drugs in addition

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10

Nanna, Saverio <1985&gt. "Optimization of molecular and crystalline forms of drugs, agrochemicals, pesticides in relation to activity, bioavailability, patentability and to the fabrication of polymorphs, solvates, co-crystals with green chemistry methods." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7050/.

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This doctorate was funded by the Regione Emilia Romagna, within a Spinner PhD project coordinated by the University of Parma, and involving the universities of Bologna, Ferrara and Modena. The aim of the project was: - Production of polymorphs, solvates, hydrates and co-crystals of active pharmaceutical ingredients (APIs) and agrochemicals with green chemistry methods; - Optimization of molecular and crystalline forms of APIs and pesticides in relation to activity, bioavailability and patentability. In the last decades, a growing interest in the solid-state properties of drugs in addition

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11

Weiser, Martin [Verfasser], Sannakaisa [Akademischer Betreuer] Virtanen, Sannakaisa [Gutachter] Virtanen, and Mathias Christian [Gutachter] Galetz. "Elementary Mechanisms During the Early Stages of Scale Formation on Single Crystalline Co- and Ni-base Superalloys at High Temperatures / Martin Weiser ; Gutachter: Sannakaisa Virtanen, Mathias Christian Galetz ; Betreuer: Sannakaisa Virtanen." Erlangen : FAU University Press, 2019. http://d-nb.info/1190359588/34.

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12

Shan, Haifeng. "Structure development in melt spinning, cold drawing and cold compression of poly(ethylene-co-octene) with different octene content." Akron, OH : University of Akron, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1137341440.

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Dissertation (Ph. D.)--University of Akron, Dept. of Polymer Engineering, 2006.<br>"May, 2006." Title from electronic dissertation title page (viewed 10/11/2006) Advisor, James L. White; Committee members, Avraam I. Isayev, Thein Kyu, Darrell H. Reneker, Shing-Chung "Josh" Wong; Department Chair, Sadhan C. Jana; Dean of the College, Frank N. Kelley; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

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13

Akyildiz, Hasan. "Hydrogen Storage In Magnesium Based Thin Film." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612652/index.pdf.

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ABSTRACT HYDROGEN STORAGE IN MAGNESIUM BASED THIN FILMS Akyildiz, Hasan Ph.D., Department of Metallurgical and Materials Engineering Supervisor : Prof. Dr. Tayfur &Ouml<br>zt&uuml<br>rk Co-Supervisor : Prof. Dr. Macit &Ouml<br>zenbas October 2010, 146 pages A study was carried out for the production of Mg-based thin films which can absorb and desorb hydrogen near ambient conditions, with fast kinetics. For this purpose, two deposition units were constructed<br>one high vacuum (HV) and the other ultra high vacuum (UHV) deposition system. The HV system was based on a pyrex bell jar

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14

Tabeshian, Ali. "Production and Characterization of Advanced Bulk Metallic Glasses for Hip Implant Applications." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16351.

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AbstractThe aim of the present project was to investigate the possibilities of using a Zr55Cu30Ni5Al10 Bulk Metallic Glass (BMG) alloy as articulating surface in an artificial hip joint.In order for a material to be used in human body as an implant, the foremost requirement is the acceptability by the human body. The implantations should not cause diseases or other complications for the patients. Moreover, the biomaterials should possess sufficient mechanical strength, high corrosion and wear resistance in harsh body environment with varying loading conditions.There have been extensive researc

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15

Isreb, Abdullah. "The use of solubility parameters to predict the behaviour of a co-crystalline drug dispersed in a polymeric vehicle : approaches to the prediction of the interactions of co-crystals and their components with hypromellose acetate succinate and the characterization of that interaction using crystallographic, microscopic, thermal, and vibrational analysis." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5525.

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Dispersing co-crystals in a polymeric carrier may improve their physicochemical properties such as dissolution rate and solubility. Additionally co-crystal stability may be enhanced. However, such dispersions have been little investigated to date. This study focuses on the feasibility of dispersing co-crystals in a polymeric carrier and theoretical calculations to predict their stability. Acetone/chloroform, ethanol/water, and acetonitrile were used to load and grow co-crystals in a HPMCAS film. Caffeine-malonic acid and ibuprofennicotinamide co-crystals were prepared using solvent evaporation

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16

Forster, Maxime. "Compensation engineering for silicon solar cells." Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00876318.

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This thesis focuses on the effects of dopant compensation on the electrical properties of crystalline silicon relevant to the operation of solar cells. We show that the control of the net dopant density, which is essential to the fabrication of high-efficiency solar cells, is very challenging in ingots crystallized with silicon feedstock containing both boron and phosphorus such as upgraded metallurgical-grade silicon. This is because of the strong segregation of phosphorus which induces large net dopant density variations along directionally solidified silicon crystals. To overcome this issue

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17

Huang, Gang. "Synthesis and study of crystalline hydrogels, guided by a phase diagram." Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4698/.

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Monodispersed nanoparticles of poly-N-isopropylacrylamide-co-allylamine (PNIPAM-co-allylamine) and PNIPAM-co-acrylic acid (AA) have been synthesized and used as building blocks for creating three-dimensional networks. The close-packed PNIPAM-co-allylamine and PNIPAM-co-AA nanoparticles were stabilized by covalently bonding neighboring particles at room temperature and at neutral pH; factors which make these networks amicable for drug loading and release. Controlled release studies have been performed on the networks using dextran markers of various molecular weights as model macromolecular dr

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18

Song, Mingxia. "Surface plasmon propagation in metal nanowires." Thesis, Dijon, 2012. http://www.theses.fr/2012DIJOS053/document.

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Pas de résumé en français<br>Plasmonic circuitry is considered as a promising solution-effectivetechnology for miniaturizing and integrating the next generation ofoptical nano-devices. The realization of a practical plasmonic circuitry strongly depends on the complete understanding of the propagation properties of two key elements: surface plasmons and electrons. The critical part constituting the plasmonic circuitry is a waveguide which can sustain the two information-carriers simultaneously. Therefore, we present in this thesis the investigations on the propagation of surface plasmons and th

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Song, Mingxia. "Propagation des plasmons de surface dans des nanofils métalliques." Phd thesis, Université de Bourgogne, 2012. http://tel.archives-ouvertes.fr/tel-00842236.

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Plasmonic circuitry is considered as a promising solution-effectivetechnology for miniaturizing and integrating the next generation ofoptical nano-devices. The realization of a practical plasmonic circuitry strongly depends on the complete understanding of the propagation properties of two key elements: surface plasmons and electrons. The critical part constituting the plasmonic circuitry is a waveguide which can sustain the two information-carriers simultaneously. Therefore, we present in this thesis the investigations on the propagation of surface plasmons and the co-propagation of surface p

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20

Кравченко, Володимир Олексійович, Владимир Алексеевич Кравченко та Volodymyr Oleksiiovych Kravchenko. "Фазовий і елементний склад та електрофізичні і магніторезистивні властивості плівкових сплавів на основі Co, Fe та Ni". Thesis, Вид-во СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20820.

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Дисертаційна робота присвячена вивченню закономірностей формування структури, фазового складу, електрофізичних і магніторезистивних властивостей плівкових сплавів CoNi (в інтервалі концентрацій 0 < сСо < 100 мас.%) і FeNi (cFe=50 мас.%) в інтервалі товщин 5-200 нм та температур 300-700 К, та магніторезистивних властивостей тришарових плівок на основі цих сплавів.Невідпалені плівки мають дрібнозернисту структуру (розмір кристалітів менше 5-10 нм). В результаті відпалу розмір кристалітів збільшується до 40-60 нм. Плівкові сплави CoNi при вмісті Со менше 70 мас.% мають однофазний склад (ГЦК-тверд

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21

Forster, Maxime. "Compensation engineering for silicon solar cells." Phd thesis, INSA de Lyon, 2012. http://hdl.handle.net/1885/156020.

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This thesis focuses on the effects of dopant compensation on the electrical properties of crystalline silicon relevant to the operation of solar cells. We show that the control of the net dopant density, which is essential to the fabrication of high-efficiency solar cells, is very challenging in ingots crystallized with silicon feedstock containing both boron and phosphorus such as upgraded metallurgical-grade silicon. This is because of the strong segregation of phosphorus which induces large net dopant density variations along directionally solidified silicon crystals. To overcome this issue

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22

Syamala, Vishnu Vijayakumar. "Molecular organization in solid-state using sigma-hole interactions : Exploring the effect of crystalline environment." Electronic Thesis or Diss., Université de Lorraine, 2022. https://docnum.univ-lorraine.fr/ulprive/DDOC_T_2022_0214_VIJAYAKUMAR_SYAMALA.pdf.

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Comprendre la formation et la stabilisation des interactions non-covalentes est de grande importance dans le domaine de l'ingénierie cristalline. Dans cette perspective, les travaux réalisés se focalisent sur l’étude d'une sous-classe d'interactions non-covalentes connues sous le nom d'interactions à trou-sigma. Ces interactions sont définies comme celles impliquant des sites électrophiles appelés trou-sigma, qui sont associés à un atome lié de manière covalente et appartenant soit au bloc p (groupes 13-18) soit au bloc d (groupes 8, 11 et 12) du tableau périodique, et des sites nucléophiles p

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23

Bouet, Gilles. "Etude structurale et analytique de complexes d'halogénures d'éléments 3D : mx::(2) (M = co,ni,cu; X = cl,br) et de diverses aldoximes furanniques." Angers, 1987. http://www.theses.fr/1987ANGE0009.

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Vingt-quatre nouveaux complexes d'halogénures de métaux 3 D : mx::(2) (m = co,ni,cu; x = cl,br) sont préparés et caractérisés. Leurs structures sont déterminées par diffraction des rayons X pour deux des composés et, à partir de celles-ci, pour l'ensemble des complexes grâce à la spectroscopie infrarouge et à la spectroscopie électronique. Le calcul des constantes de stabilité et des paramètres thermodynamiques correspondants par titrimétrie thermométrique est décrit.

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紀喬崧. "Crystalline Structure and Magnetism of Pd/Fe,Co,Ni bilayers on Al2O3(0001)." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/09401169035432235063.

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碩士<br>國立臺灣師範大學<br>物理學系<br>100<br>This study is separated into two parts: (1) Using oblique deposition to change the surface morphology. (STM measurement) We investigated the corresponding magnetic behavior (MOKE measurement), and the crystalline structure (XRD, EXAFS measurement) in Pd/Fe/Al2O3(0001) system. (2) H2 effect in MOKE, we absorption H2 from 10-3 mbar to 1013 mbar and measured MOKE in Pd/Fe,Co,Ni/Al2O3(0001) systems. In many studies, surface morphology plays an important role in magnetic behavior. They are many methods to change it, like ion-sputtering, different stepped substrate…

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薛坤仁. "Growth, Crystalline Structure, Thermal Stability and Magnetism of Ni, Co/O-3x3/W(111)." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/08597723424065667003.

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26

Lin, Wen-Chin, and 林文欽. "Growth, crystalline structure and magnetic properties of alloy ultrathin films Co(x)Ni(1-x)/Cu(100)." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/15923490281900790883.

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碩士<br>國立臺灣大學<br>物理學研究所<br>88<br>Magnetic alloy ultrathin films CoxNi1-x/Cu(100) were prepared to characterize its behavior of spin reorientation transition (SRT). With the double check of MEED oscillation and quantitative AES analysis, the composition of the alloy films was determined within an accuracy of ± 0.5 %, which allows us to prepare alloy films in very low Co concentration. So the sensitive effect of alloy composition in crystalline structure, morphology and magnetic properties can be characterized in situ by LEED, I/V-LEED and MOKE. The critical thickness of spin reorientation transi

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27

Xu, Zhong-Yi, and 徐忠義. "Using Side‐chain Attachment Density and Backbone Curvature to Regulate D–A Co-oligomer Crystalline Orientation in Thin Film." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/f7m7vk.

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碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>105<br>Conducting polymers are important materials in the fabrication of optoelectronic devices. The orientation of the polymer crystalline is critical to achieve high charge carrier mobility and performance in the devices. In general, the edge-on orientation is preferred for utilities of organic field-effect transistors, and the face-on orientation is desired for applications in organic solar cells. However, the detail mechanisms behind the cause of favored crystal orientation of conducting polymers are not clearly understood currently. The systematic studie

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28

Wu, Cheng-De, and 吳承德. "Effects of Ceria and Chromia Co-Doped on the Crystalline Structure and Dielectric Properties of Strontium Barium Niobate Ceramics." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/18561863514718226473.

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碩士<br>國立成功大學<br>資源工程學系碩博士班<br>95<br>Strontium barium niobate ( SBN ) ceramic is a good electro-optic material and has been widely used. Although SBN single crystals could be used in wide applications, high cost and difficult fabrication have limited its practical use. For optical applications, a ceramic with almost full density and uniform microstructure is greatly desired. Strontium barium niobate co-doped Ce2O3、Cr2O3 is investigated into the crystalline structure and the dielectric properties. Due to the increase of the quantity of the additive, the a axis is increased, but the c axis is dec

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29

Cheng, Mei-Ling, and 程美玲. "Structure and Free Volume Properties of Semi-crystalline Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Membranes by Positron Annihilation Lifetime Analysis." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/12787223919352259340.

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博士<br>元智大學<br>化學工程與材料科學學系<br>97<br>Free volume properties in the amorphous region of a series of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) membranes, which were prepared by cold- and melt-crystallization processes, were investigated using positron annihilation lifetime (PAL) spectroscopy in this study. From the lifetime parameters, the temperature dependence of free volume size, amount, free volume size distribution, and fractional free volume, and the thermal expansion of free volume were discussed. Furthermore, the knee temperature was first observed in the melting process of the

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Wehner, Arno [Verfasser]. "Growth and characterization of thin Al2O3 and Ga2O3 films on single-crystalline Ni, Co, and CoGa substrates / vorgelegt von Arno Wehner." 2004. http://d-nb.info/971538360/34.

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Chiang, Tien-Wei, and 江典蔚. "Observation of Anisotropic Effect of Spin Polarizaton Current in Single Crystalline Co/Fe/MgO Grown on MgO(001)、(011) and (111)." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/52035307399260824243.

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碩士<br>國立中正大學<br>物理系<br>92<br>Experiments have been performed by using series of crystalline Co(500 )/Fe(50 )/MgO(X)/Fe(500 ) films (where X=8、16、25).The samples have prepared by molecular beam epitaxy on MgO(001,011,111) substrates. The hysteresis and magnetoresistance measurements have performed and have found the some meaningful result.They are (1)MR ratios are not found very high and the average values are smaller than 0.2%. (2)The thickness of insulating MgO layer makes a little factor of MR ratio and it shows higher for the sample which has thickness of insulating layer is 25, grow

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32

Lee, Chao-hsien, and 李昭賢. "Study of the Microstructure of the Concentric Spherulite of Double Crystalline Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)- Poly(ethylene glycol) Block Copolymers." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/08266225887593188746.

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碩士<br>逢甲大學<br>纖維與複合材料學系<br>100<br>Crystalline-crystalline Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Poly(ethylene glycol) block copolymers (PHEGs) were synthesized form PHBV2000 and PEG with different number-average molecular weights. This study focused on the microstructure of the concentric spherulite of double crystalline block copolymers. The crystallization and melting behaviors were studied by a differential scanning calorimeter (DSC). The concentric spherulite morphology was observed with a hot stage polarizing microscope (HSPM). The conformation were investigated by an In-situ F

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Roy, Sounak. "Noble Metal And Base Metal Ion Substituted Ceo2 And Tio2 : Efficient Catalysts For Nox Abatement." Thesis, 2007. https://etd.iisc.ac.in/handle/2005/584.

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In recent times, as regulations and legislations for exhaust treatment have become more stringent, a major concern in the arena of environmental catalysis is to find new efficient and economical exhaust treatment catalysts. Chapter 1 is a review of the current status of various NOx abatement techniques and understanding the role of “auto-exhaust catalysts” involved therein. Chapter 2 presents the studies on synthesis of ionically substituted precious metal ions like Pd2+, Pt2+ and Rh3+ in CeO2 matrix and their comparative three-way catalytic performances for NO reduction by CO, as well as CO a

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Roy, Sounak. "Noble Metal And Base Metal Ion Substituted Ceo2 And Tio2 : Efficient Catalysts For Nox Abatement." Thesis, 2007. http://hdl.handle.net/2005/584.

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In recent times, as regulations and legislations for exhaust treatment have become more stringent, a major concern in the arena of environmental catalysis is to find new efficient and economical exhaust treatment catalysts. Chapter 1 is a review of the current status of various NOx abatement techniques and understanding the role of “auto-exhaust catalysts” involved therein. Chapter 2 presents the studies on synthesis of ionically substituted precious metal ions like Pd2+, Pt2+ and Rh3+ in CeO2 matrix and their comparative three-way catalytic performances for NO reduction by CO, as well as CO a

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Bhattacharya, Saurav. "Syntheses Structural Transformations, Magnetism, Ferroelectricity and Proton Conduction of Metal Organic Frameworks (MOF) Compounds." Thesis, 2015. http://etd.iisc.ac.in/handle/2005/3546.

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The past few decades have witnessed an almost exponential increase in interest in the field of metal organic frameworks (MOFs), which can be evidenced from the large number of scientific articles being published routinely in this area. The MOFs are crystalline hybrid materials built via the judicial use of inorganic metal ions and organic linkers, thereby bridging the gap between purely inorganic and organic materials. The structural versatility and the potential tunability of the MOFs imparts unique physicochemical and thermomechanical properties, which have rendered them immensely useful in

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Bhattacharya, Saurav. "Syntheses Structural Transformations, Magnetism, Ferroelectricity and Proton Conduction of Metal Organic Frameworks (MOF) Compounds." Thesis, 2015. http://etd.iisc.ernet.in/2005/3546.

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The past few decades have witnessed an almost exponential increase in interest in the field of metal organic frameworks (MOFs), which can be evidenced from the large number of scientific articles being published routinely in this area. The MOFs are crystalline hybrid materials built via the judicial use of inorganic metal ions and organic linkers, thereby bridging the gap between purely inorganic and organic materials. The structural versatility and the potential tunability of the MOFs imparts unique physicochemical and thermomechanical properties, which have rendered them immensely useful in

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