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Dissertations / Theses on the topic 'Bulk ZnO'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Gu, Xing. "GaN Epitaxy on Melt Grown Thermally Prepared Bulk ZnO Substrates." VCU Scholars Compass, 2004. http://scholarscompass.vcu.edu/etd/1007.

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Different methods were developed for the preparation of bulk ZnO substrates. Remarkable improvement on the surface, optical and crystalline quality of the bulk ZnO substrate was achieved. ZnO substrates with an atomically flat surface exhibiting terrace-like features were used as a substrate for GaN grown by MBE. High-resolution x-ray diffraction and low temperature PL results show that similar high quality GaN layers can be achieved on both annealed O-face and Zn-face ZnO substrates. The prospect of the device applications of GaN epitaxy on ZnO, including AlGaN/GaN MODFET structure on ZnO and

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2

Chen, Shula. "Excitonic Effects and Energy Upconversion in Bulk and Nanostructured ZnO." Doctoral thesis, Linköpings universitet, Funktionella elektroniska material, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-102594.

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Zinc Oxide (ZnO), a II-VI wurtzite semiconductor, has been drawing enormous research interest for decades as an electronic material for numerous applications. It has a wide and direct band gap of 3.37eV and a large exciton binding energy of 60 meV that leads to intense free exciton (FX) emission at room temperature. As a result, ZnO is currently considered among the key materials for UV light emitting devices with tailored dimensionality and solid state white lighting. Full exploration of ZnO in various applications requires detailed knowledge of its fundamental and materialrelated properties,

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3

Stehr, Jan Eric, Xingjun Wang, Stanislav Filippov, et al. "Defects in N, O and N, Zn implanted ZnO bulk crystals." Linköpings universitet, Funktionella elektroniska material, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-91343.

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Comprehensive characterization of defects formed in bulk ZnO single crystals co-implanted with N and Zn as well as N and O atoms is performed by means of optically detected magnetic resonance (ODMR) complemented by Raman and photoluminescence (PL) spectroscopies. It is shown that in addition to intrinsic defects such as Zn vacancies and Zn interstitials, several N-related defects are formed in the implanted ZnO. The prevailed configuration of the defects is found to depend on the choices of the co-implants and also the chosen annealing ambient. Specifically, co-implantation with O leads to the

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4

Pinkett, Shawn L. "Techniques to facilitate the fabrication of ZnO-based thin film bulk acoustic wave devices." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/14889.

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5

Marana, Naiara Letícia [UNESP]. "Estudo computacional do óxido de zinco puro e dopado com metais de transição: bulk, superfícies, interfaces e nanotubos." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/150977.

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6

Tyborski, Tobias. "Ultrafast mid-infrared studies on BH−4 ions,H2PO−4 ions, and a bulk plasmon inGa-doped ZnO." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2016. http://dx.doi.org/10.18452/17573.

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Mit Hilfe von linearer und nichtlinearer Infrarotspektroskopie im Femtosekundenbereich wurden Schwingungsdynamiken von H2PO4- und BH4- Ionen untersucht sowie ein Volumenplasmon in einem Schichtsystem aus Ga-dotiertem ZnO. Phosphatgruppen stellen Hydratisierungsstellen in Biomolekülen wie DNS oder Phospholipiden dar und wechselwirken intensiv mit wässrigen Solvatationsschalen. Die Untersuchung einer isolierten Phosphatgruppe in Wasser, dem Phosphation H2PO4-, hat ergeben, dass Phosphatschwingungen sehr sensitive Sonden für die ausgeprägte Fluktuationsdynamik von Volumenwasser darstellen, was e

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7

Olson, Grant T. "Improving Hybrid Solar Cells: Overcoming Charge Extraction Issues In Bulk Mixtures of Polythiophenes and Zinc Oxide Nanostructures." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1257.

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Organic photovoltaics (OPVs) have received a great deal of focus in recent years as a possible alternative to expensive silicon based solar technology. Current challenges for organic photovoltaics are centered around improving their lifetimes and increasing their power conversion efficiencies. One approach to improving the lifetime of such devices has been the inclusion of inorganic metal oxide layers, but interaction between the metal oxides and common conjugated polymers is not favorable. Here we present two methods by which the interactions between polythiophenes and nanostructured ZnO can

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8

Wathen, Adam Daniel. "Acoustic wave biosensor arrays for the simultaneous detection of multiple cancer biomarkers." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42717.

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The analysis and development of robust sensing platforms based on solidly-mounted ZnO bulk acoustic wave devices was proposed. The exploitation of acoustic energy trapping was investigated and demonstrated as a method to define active sensing areas on a substrate. In addition, a new "hybrid" acoustic mode experiencing acoustic energy trapping was studied theoretically and experimentally. This mode was used as an explanation of historical inconsistencies in observed thickness-shear mode velocities. Initial theoretical and experimental results suggest that this mode is a coupling of thicknes

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9

Hughes, William L. "Synthesis and characterization of zinc oxide nanostructures for piezoelectric applications." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-08232006-155547/.

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Thesis (Ph. D.)--Materials Science and Engineering, Georgia Institute of Technology, 2007.<br>Wang, Zhong Lin, Committee Chair ; Wong, C.P., Committee Member ; Summers, Christopher J., Committee Member ; Degertekin, F. Levent, Committee Member ; Bottomley, Lawrence A., Committee Member.

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10

Tyborski, Tobias Verfasser], Thomas [Gutachter] Elsässer, Oliver [Gutachter] [Benson, and Peter [Gutachter] Hamm. "Ultrafast mid-infrared studies on BH−4 ions, H2PO−4 ions, and a bulk plasmon in Ga-doped ZnO / Tobias Tyborski. Gutachter: Thomas Elsässer ; Oliver Benson ; Peter Hamm." Berlin : Lebenswissenschaftliche Fakultät, 2016. http://d-nb.info/1110942052/34.

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11

Tyborski, Tobias [Verfasser], Thomas Gutachter] Elsässer, Oliver [Gutachter] [Benson, and Peter [Gutachter] Hamm. "Ultrafast mid-infrared studies on BH−4 ions, H2PO−4 ions, and a bulk plasmon in Ga-doped ZnO / Tobias Tyborski. Gutachter: Thomas Elsässer ; Oliver Benson ; Peter Hamm." Berlin : Lebenswissenschaftliche Fakultät, 2016. http://d-nb.info/1110942052/34.

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12

Liu, Xilan. "Polymer Photodetectors: Device Structure, Interlayer and Physics." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1384334220.

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13

Buchine, Brent Alan. "Acoustics in nanotechnology: manipulation, device application and modeling." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26542.

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Thesis (Ph.D)--Materials Science and Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Wang, Zhong Lin; Committee Member: Degertekin, F. Levent; Committee Member: Liu, Meilin; Committee Member: Snyder, Robert L.; Committee Member: Tannenbaum, Rina. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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14

Ayas, Can. "Theoretical And Experimental Investigation Of Bulk Glass Forming Ability In Bulk Amorphous Alloy Systems." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605884/index.pdf.

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In this study molecular dynamics simulation program in NVT ensemble using Velocity Verlet integration was written in order to investigate the glass forming ability of two metallic systems. The Zn-Mg system, one of the frontiers of simple metal-metal metallic glasses and Fe-B, inquiring attention due to presence of many bulk glass forming alloy systems evolved from this binary with different alloying element additions. In addition to this, atomistic calculations on the basis of ordering were carried out for both Zn-Mg and Fe-B systems. Ordering energy values are calculated using electronic theo

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15

Belo, Fernandes Ivan. "Geometallurgical approach to understand how the variability in mineralogy at Zinkgruvan orebodies affects the need for copper activation in the bulk rougher-scavenger flotation." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65392.

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Zinkgruvan is a Pb-Zn-Ag deposit located in south-central Sweden, owned and operated by Lundin Mining. The ore is beneficiated by a collective-selective flotation circuit, recovering both galena and sphalerite in a bulk rougher-scavenger flotation stage and later on separating them into two final products. Opportunities for increase in zinc recovery in the bulk rougher scavenger flotation stage have been identified as the plant is relying on natural Pb-activation to process the ore. Process mineralogical tools were used to characterize four different orebodies from Zinkgruvan (Burkland, Borta

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16

Nebatti, Ech-Chergui Abdelkader [Verfasser], Burak [Akademischer Betreuer] Atakan, and Volker [Akademischer Betreuer] Buck. "Functional doped metal oxide films : [[Elektronische Ressource]] : Zinc oxide (ZnO) as transparent conducting oxide (TCO) Titanium dioxide (TiO2) as thermographic phosphor and protective coating / Abdelkader Nebatti Ech-Chergui. Gutachter: Volker Buck. Betreuer: Burak Atakan." Duisburg, 2011. http://d-nb.info/1015428088/34.

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17

Adekore, Bababunmi Tolu. "Acceptor conductivity in bulk ZnO (0001) crystals." 2003. http://www.lib.ncsu.edu/theses/available/etd-02022004-141146/unrestricted/etd.pdf.

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18

Kiesel, Sharon Mary. "Transmission electron microscopy preparation and characterization of bulk ZnO and Au(111) / ZnO(0001̄) heterostructures." 2003. http://www.lib.ncsu.edu/theses/available/etd-11242003-211411/unrestricted/etd.pdf.

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19

Yan, Caihua. "Electronic structure and optical properties of ZnO : bulk and surface." Thesis, 1994. http://hdl.handle.net/1957/35704.

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20

Lin, Re-Ching, and 林瑞欽. "The study of film bulk acoustic resonator using ZnO thin film." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/mj6yhz.

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博士<br>國立中山大學<br>電機工程學系研究所<br>97<br>In this study, T-ladder type thin film bulk acoustic wave filters had been fabricated based on thin film bulk acoustic wave resonators. The titanium (Ti) seeding layer and platinum (Pt) for bottom electrode were deposited on silicon substrates by a dual-gun DC sputtering system. Field-emission scanning electron microscopy, atomic force microscopy and the four-point probe method showed that the Pt bottom electrode deposited on the Ti seeding layer exhibited favorable characteristics, such as a surface roughness of 0.69 nm and a sheet resistance of 2.27 Ω/□. Th

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21

Chen, Xing You, and 陳星佑. "Study on the nonlinear optical properties of ZnO bulk and nano-thin film." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/66803939363974992870.

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碩士<br>國立臺灣海洋大學<br>光電科學研究所<br>97<br>Abstract ZnO is a kind of stable and safe material, for applications in solar cell or LED. It also has many other applications. We use a simple experimental setup to probe into the complex property of ZnO. The wavelength of our pulse laser is 790nm with a 70fs pulse width. We vary the laser power in order to get distinct material nonlinear absorption and refraction property. Furthermore, we use theory to fit the different thickness and different laser power of material nonlinear coefficients. In this thesis, UV and visible spectral data are used to calcul

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22

Kassier, Gunter Horst. "The characterization of bulk as-grown and annealed ZnO by the Hall effect." Diss., 2007. http://hdl.handle.net/2263/26646.

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A fully automated Temperature Dependent Hall (TDH) measurement setup has been assembled for the purposes of this study. This TDH setup is capable of measuring samples in the 20 K to 370 K temperature range. Sample sizes of up to 20 mm × 20 mm can be accommodated by the custom designed and manufactured sample holder. Samples with a resistance in the 1Ω to 250 MΩ range can be measured with this setup provided that the mobility of the sample is greater than 1 cm²/Vs. The computer program controlling the automated measurement processwas written in LabView™ version 6.1. Single crystal Zinc Oxide (

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23

Tsai, Tzung-ru, and 蔡宗儒. "The Fabrication of Thin Film Bulk Acoustic Wave Filters Using ZnO Piezoelectric Thin Films." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/3bx5t3.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>96<br>Thin Film bulk acoustic wave devices have the advantages of low loss, low temperature coefficient of the resonant frequency, and high power handling. These excellent characteristics are suitable for the applications on high frequency communication systems. In this study, thin film bulk acoustic wave filters using the ladder-type filter and stacked crystal filter configurations were investigated. Platinum was chosen as the top and bottom electrodes. To improve the platinum adhesion on SiNx/SiO2/Si substrates, a seeding layer of titanium is used. Highly c-axis

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24

Jiang, Jia-Ming, and 姜嘉銘. "Study of Liquid Sensor Using Dual-Mode ZnO Thin-Film Bulk Acoustic Resonator (TFBAR)." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/50522120087495626466.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>99<br>A novel liquid sensor is designed and fabricated by using thin film bulk acoustic resonator (TFBAR) devices with c-axis 23°-tilted ZnO films. To fabricate TFBAR devices, the off-axis RF magnetron sputtering method for the growth of piezoelectric ZnO thin films is adopted. The influences of the relative distance and sputtering parameters are investigated. In this report, the piezoelectric ZnO thin films with tilting angle of 23° are set by controlling the deposition parameters. The properties of the c-axis 23°-tilted ZnO thin films are investigated by X-ray di

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25

Chen, Yi-Hao, and 陳義皓. "The Study of ZnO Film Bulk Acoustic Wave Resonator Fabricated by Sol-Gel Method." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/4ebzc8.

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26

Ting, Meng-Fang, and 丁盟芳. "Study on the Properties of (100) Oriented ZnO Thin Film and Application of Bulk Acoustic Wave Resonator." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/43764006640442763805.

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碩士<br>國立高雄應用科技大學<br>電子工程系<br>99<br>In this study , we deposited (100)-oriented ZnO film by reactive RF magnetron sputtering method , and apply ZnO film to fabricate thin film bulk acoustic resonator (FBAR). The structure of FBAR were prepared by DC sputtering , reactive RF magnetron sputtering , plasma enhanced chemical vapor deposition(PECVD) and inductively coupled plasma(ICP) methods. In this experiment , the characteristics of ZnO films such as crystalline orientation and micro-structure were analyzed by X-ray diffraction and scanning electron microscope respectively. The resonance freque

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Chien-JuLiu and 劉倩如. "Effect of Adding ZnO/TiO2 Nanorods Fabricated by Eletrospinning Method in Y-Ba-Cu-O Single Grain Bulk Superconductors." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/08845057265492528367.

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碩士<br>國立成功大學<br>材料科學及工程學系碩博士班<br>100<br>This study presents the enhanced superconducting properties of single grain Y-Ba-Cu-O (YBCO) bulk superconductors by the addition of TiO2 and ZnO 1D nano-structures by electrospinning method and compares with that for the undoped sample and samples with the addition of nanoparticles (NPs). The TiO2 and ZnO nanorods (NRs) were fabricated by electrospinning method to be effective pinning centers of columnar defects in bulk YBCO superconductors. The mean diameter of TiO2 NRs was 288.2nm. There were two different sizes of ZnO NRs with mean diameter of 51.6nm

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28

Li, Jiji. "Comparative behaviour of nano ZnO, bulk ZnO and ionic Zinc in marine environment and effect upon biological target organisms such as primary producers (marine algae Tetraselmis suecica and Phaeodactylum tricornutum) and filter feeder (Mediterranean mussels Mytilus galloprovincialis) chronically exposed." Tesi di dottorato, 2016. http://www.fedoa.unina.it/10974/1/Li_Jiji_28.pdf.

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Zinc oxide nanoparticles (ZnO NPs), one among the most widely used metal oxide nanomaterias, has unique properties, such as optoelectronic property, UV emission, transparent conductivity, piezoelectricity, UV absorption and reflection, those make ZnO NPs to be currently used in a broad range of products. Such widespread and expanding production and use increase the potential for their release into the environment, in US, Euorpe, and China. With the vast releasing of ZnO NPs, the ecotoxic risk had drawn much research interest in the last decades. The aquatic ecosystem is the final destination o

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29

Lin, Tsang-ming, and 林倉名. "Optical characteristics of Al2O3-capped ZnO bulks and aluminum-doped ZnO thin films." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/96824769303058657766.

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碩士<br>國立臺南大學<br>材料科學系碩士班<br>98<br>There are two main areas of concerns in this thesis. One is the study of optical characteristics of bulk ZnO with different thicknesses of Al2O3 surface passivation layers. The other is the study of optical characteristics of aluminum-doped ZnO thin film. Micro-Raman spectra, photoreflectance (PR) spectra, and photoluminescence (PL) spectra are utilized in analyzing the capping layer effect on bulk ZnO substrate. The results of micro-Raman spectra show that the growth of Al2O3 surface passivation layers do not affect the crystal quality of bulk ZnO. The surfac

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Shih, Yung-chih, and 施勇志. "Optical Characterization of bulk Zn1-xBexTe Crystals." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/52318313686451472962.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>96<br>This thesis presents an optical characterization of bulk sphalerite Zn1-xBexTe and ZnTe crystals grown by the high pressure Bridgman method. The study was conducted in the near-band-edge interband transition regime using low temperature photoluminescence (PL), temperature-dependent surface photovoltage spectroscopy (SPS), temperature-dependent contactless electroreflectance (CER) and/or photoreflectance (PR) in the temperature range of 15 – 400 K. Room-temperature SPS has been used as a technique for checking the surface condition of the samples. PL spectra at

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31

Wang, Shian-Wei, and 王獻緯. "Electron Paramagnetic Resonance Study of Nanometer-Scale and Bulk ZnS Particles." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/53397795878942125225.

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碩士<br>國立暨南國際大學<br>應用化學系<br>99<br>In this research, we synthesized ZnS nanoparticles with differemt sizes were by chemical precipitation method at room temperature in aqueous solution. Powder X-ray diffraction analysis confirmed the ZnS structure. We will discuss the electron paramagnetic resonance spectra which measured for four different average sizes from 3 to 30 nm and commercial bulk ZnS particles at room temperature under irradiation. All EPR simulated spectrum obtained by using the EasySpin program. In this case, we found all of powder samples with their g-value or center line g-value ar

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32

SOMMEROVÁ, Dana. "Analýza nových trendů v konstrukci a používání dopravních a manipulačních zařízení a prostředků v zemědělství." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-115848.

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The work deals with the analysis of transport and handling operations performed on specific agricultural farm. It is the handling and transport operations in the handling of grain and bulky materials. It also analyzes new trends in the marketfor transport and handling equipment. Based on these analyzes, was developed a proposal for the modernization of handling equipment and vehicles. Farm equipment was proposed appropriate means of transport and handling facilities,not only from a technical perspective, but also in terms of ecological and economic terms. For this reason, it was suggested some

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33

Biswas, Tripti. "Studies Of Glass Formation In Al-La-Ni And Mg-TM-RE Alloys With A Structure Mapping Approach." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/750.

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The glass-forming composition ranges in Al-La-Ni and Mg-TM (Cu, Zn)-Y alloys were predicted using Miedema’s model. Glass-forming abilities of Al-La-Ni alloys and Mg-Cu-RE alloys were studied in terms of reduced glass transition temperature (Trg), supercooled liquid region (∆Tx) and γ parameters. The glass-forming ability parameters of Mg-Cu-RE (RE: rare-earth) alloys were correlated with Mendeleev number. The Miedema model has been used to determine glass-forming composition range in binary Al-La, Al-Ni and La-Ni alloy systems and the ternary Al-La-Ni system by neglecting the ternary intera

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Biswas, Tripti. "Studies Of Glass Formation In Al-La-Ni And Mg-TM-RE Alloys With A Structure Mapping Approach." Thesis, 2008. http://hdl.handle.net/2005/750.

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The glass-forming composition ranges in Al-La-Ni and Mg-TM (Cu, Zn)-Y alloys were predicted using Miedema’s model. Glass-forming abilities of Al-La-Ni alloys and Mg-Cu-RE alloys were studied in terms of reduced glass transition temperature (Trg), supercooled liquid region (∆Tx) and γ parameters. The glass-forming ability parameters of Mg-Cu-RE (RE: rare-earth) alloys were correlated with Mendeleev number. The Miedema model has been used to determine glass-forming composition range in binary Al-La, Al-Ni and La-Ni alloy systems and the ternary Al-La-Ni system by neglecting the ternary interac

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Bhaskar, Srilakshmi P. "A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/2924.

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Recent advancements in nanotechnology and emerging applications of nanomaterials in various fields have stimulated interest in fundamental scientific research dealing with the size and structure controlled synthesis of nanoparticles. The unique properties of nanoparticles are largely size dependent which could be tuned further by varying shape, structure, and surface properties, etc. The preparation of monodisperse nanoparticles is desirable for many applications due to better control over properties and higher performance compared to polydispersity nanoparticles. There are several methods for

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Bhaskar, Srilakshmi P. "A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method." Thesis, 2016. http://hdl.handle.net/2005/2924.

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Recent advancements in nanotechnology and emerging applications of nanomaterials in various fields have stimulated interest in fundamental scientific research dealing with the size and structure controlled synthesis of nanoparticles. The unique properties of nanoparticles are largely size dependent which could be tuned further by varying shape, structure, and surface properties, etc. The preparation of monodisperse nanoparticles is desirable for many applications due to better control over properties and higher performance compared to polydispersity nanoparticles. There are several methods for

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