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Dissertations / Theses on the topic 'Melting and boiling points'

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1

Tesconi, Marc S. "Estimation of the melting points, enthalpies of melting, and entropies of melting of organic compounds." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/284008.

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Values for the melting points, total enthalpies of melting, and total entropies of melting of organic compounds are required in order to accurately estimate properties such as aqueous solubility and vapor pressure. These measurements, therefore, are critical to predicting how a chemical will behave both in the body and in the environment. Despite their importance, relatively few methods are available for predicting these properties from chemical structure. One reason for the lack of available methods is that these properties are easily obtained experimentally. The major reason, however, is tha
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2

Jain, Akash. "Estimation of Melting Points of Organic Compounds." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1303%5F1%5Fm.pdf&type=application/pdf.

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3

Villalobos, Guillermo Roberts. "Gadolinia-ceria/molybdenum eutectic composites from skull melting." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/8690.

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4

Kim, Yoonkap. "Low temperature melting point metals for hot MEMS electrical switching." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Thesis/Fall2007/Y_Kim_121307.pdf.

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5

Ding, Yuanxiri. "Structure-property relationshiips in organic solid forms : structures and melting points." Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487115.

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An exploration of the cprrelations between melting point and molecular and crystal structures has been made. The research was based on a training set with 100 compounds in which the molecular structures contain one common, core unit with two various terminal groups. Previous work by Dr Gelbrich of our group confirmed that the crystal structures of the training set comprise 56 different structure types containing nine different types of hydrogen bonding arrangements. The investigation was divided in three main parts which focused on (1) the effect of molecular structures pn melting point, (2) t
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6

Fortner, Sarah Kathryn. "The geochemistry of glacier snow and melt the Oregon Cascades and the Taylor Valley, Antarctica /." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1228255773.

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7

ABRAMOWITZ, ROBERT. "ESTIMATION OF THE MELTING POINT OF RIGID ORGANIC COMPOUNDS (COSOLVENT, NAPHTHALENE)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183935.

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The melting points of rigid, hydrogen bonding, and non-hydrogen bonding organic compounds have been estimated from their chemical structure. The estimation was accomplished through the use of both additive and non-additive non-constitutive properties of the molecule. The melting points of the aforementioned compounds can be estimated by the equation: TM = TMPN + TIHBN + TPACK + 8.9*EXPAN + 73.1*SIGMAL + 196.3 where the dependent variable, TM, is the melting point of the compound in Kelvin, SIGMAL is the logarithm of the symmetry number for the molecule, EXPAN is the eccentricity of the molecul
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8

Wang, Jianwei. "An experimental investigation of droplet impact cooling at controlled surface temperatures." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17329.

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9

Farid, Muhammad Usman [Verfasser]. "CFD modeling of combustion of solid waste materials with low melting points / Muhammad Usman Farid." Magdeburg : Universitätsbibliothek, 2018. http://d-nb.info/1154485668/34.

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10

Kireeva, Natalia. "Ensemble QSPR modeling of stabilities of metal : ligands complexes and melting points of ionic liquids." Strasbourg, 2009. http://www.theses.fr/2009STRA6008.

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11

Huaiyu, Yang. "Crystallization of Parabens : Thermodynamics, Nucleation and Processing." Doctoral thesis, KTH, Teknisk strömningslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122228.

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In this work, the solubility of butyl paraben in 7 pure solvents and in 5 different ethanol-water mixtures has been determined from 1 ˚C to 50 ˚C. The solubility of ethyl paraben and propyl paraben in various solvents has been determined at 10 ˚C. The molar solubility of butyl paraben in pure solvents and its thermodynamic properties, measured by Differential Scanning Calorimetry, have been used to estimate the activity of the pure solid phase, and solution activity coefficients. More than 5000 nucleation experiments of ethyl paraben, propyl paraben and butyl paraben in ethyl acetate, acetone,
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12

Apte, Pankaj A. "Phase equilibria and nucleation in condensed phases a statistical mechanical study /." Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1135876018.

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13

Storey, Marianne. "Effect of disorder on the melting phase transition." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322000.

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14

Lange, Carsten. "Advanced nonlinear stability analysis of boiling water nuclear reactors." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-24954.

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This thesis is concerned with nonlinear analyses of BWR stability behaviour, contributing to a deeper understanding in this field. Despite negative feedback-coefficients of a BWR, there are operational points (OP) at which oscillatory instabilities occur. So far, a comprehensive and an in-depth understanding of the nonlinear BWR stability behaviour are missing, even though the impact of the significant physical parameters is well known. In particular, this concerns parameter regions in which linear stability indicators, like the asymptotic decay ratio, lose their meaning. Nonlinear stability a
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15

Friedman, Mark Richard. "Novel thermotropic liquid crystals possessing a benzo[b]furan unit." Thesis, University of Hull, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342980.

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16

Nduwimana, Alexis. "Confinement effect on semiconductor nanowires properties." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19865.

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Thesis (Ph.D)--Physics, Georgia Institute of Technology, 2008.<br>Committee Chair: Chou, Mei-Yin; Committee Member: First,Phillip; Committee Member: Gao, Jianping; Committee Member: Landman, Uzi; Committee Member: wang, Xiao-Qian.
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17

RANIERI, IZILDA M. "Crescimento de cristais de LiY sub(1-x) TR sub(x) F sub(4):Nd (TR=Lu ou Gd) para aplicacoes opticas." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10935.

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Made available in DSpace on 2014-10-09T12:45:47Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:07:17Z (GMT). No. of bitstreams: 1 07149.pdf: 7899411 bytes, checksum: 6ba368602f98f29e9401ef54276cdb45 (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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18

Yu, Ting, and 于婷. "Melting Points Determination for Binary Systems Exhibiting Deep Eutectic Solvents." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/t7csaw.

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碩士<br>中原大學<br>化學工程研究所<br>102<br>Deep eutectic solvents (DESs) are emerging environmentally benign alternatives to volatile organic compounds for a wide range of applications. They are also proposed as low-cost alternatives to traditional ionic liquids, and have great potential for bulk applications. They can be prepared with relative ease from the huge number of available ammonium salts and hydrogen bond donors. In this study, the following DESs were investigated: (1) choline chloride + urea (2) choline chloride + malonic acid (3) N,N-diethylethanolammonium chloride + ethylene glycol (4) N,N-d
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19

Rosenthal, Anja. "Exploring the melting behaviour of the Earth's heterogeneous upper mantle." Phd thesis, 2009. http://hdl.handle.net/1885/151214.

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The existence, creation and modification of compositional heterogeneities within the Earth's upper mantle and their influences on the petrogenesis of primitive magmas have been highly debated for decades. The possible origins of mantle heterogeneities within the Earth's peridotite-dominated mantle are numerous and complex. One major mechanism invokes an important role for recycling of oceanic crust at subduction zones, and the storage of these recycled mafic (and sedimentary) materials in the deep mantle, before it is thought to be incorporated in the adiabatically upwelling upper mantle sourc
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20

Meadows, Scott Alan. "Evolution of seed oil melting points of multiple species at a common latitude." Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-05-5667.

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Similar forces of selection operating on multiple taxa can cause convergent evolution of quantitative traits. When those same forces of selection occur across an environmental gradient a phenotypic cline may evolve. I have conducted an experiment in central Texas to test whether seed oil melting points and proportions of saturated fatty acids have repeatedly evolved to germinate as predicted by theory. Species with lower seed oil melting points and proportions of saturated fatty acids are expected to germinate at cooler temperatures than ones that germinate at warmer temperatures. Field obs
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21

Wong, Vernon. "2-D Melting in Excimer-Laser Irradiated Polycrystalline Silicon Films." Thesis, 2021. https://doi.org/10.7916/d8-x01m-sp52.

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This thesis examines the excimer-laser-induced melting of ELA-prepared silicon films using in situ transient reflectance and transmission analysis. The results clearly show that these polycrystalline films, which consist of columnar grains in contact with SiO₂, can melt in a largely and remarkably 2-D manner. Based on the presently and previously obtained experimental results, as well as considering the thermal, thermodynamic, and kinetic aspects of the melting-transition-relevant details, we suggest a model that consists of grain-boundary-initiated melting, followed by lateral melting proceed
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22

Mesko, Gary. "Magmatism at the Southern End of the East African Rift System: Origin and Role During Early Stage Rifting." Thesis, 2020. https://doi.org/10.7916/d8-k13k-8778.

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The composition of volcanic products can provide critical information about the source and the conditions of melting. This information is used to highlight differences in melting environments from volcanic regions around the globe. Volcanic lavas and other products from the Rungwe Volcanic Province, in southwest Tanzania (9.13S,33.67E), were collected and studied to test a number of lingering questions about the role of magmatism in a continental rift tectonic environment. The Rungwe Volcanic Province is the only region in this portion of the East African Rift (EAR) system with apparent magmat
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23

Nannoolal, Yash. "Development of a group contribution method for the prediction of normal boiling points of non-electrolyte organic compounds." Thesis, 2004. http://hdl.handle.net/10413/4337.

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Physical properties are fundamental to all chemical, biochemical and environmental industries. One of these properties is the normal boiling point of a compound. However, experimental values in literature are quite limited and measurements are expensive and time consuming. For this reason, group contribution estimation methods are generally used. Group contribution is the simplest form of estimation requiring only the molecular structure as input. Consequently, the aim of this project was the development of a reliable group contribution method for the estimation of normal boiling points of non
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24

Larsson, Sihm André. "Melting points of binary and ternary eutectic chloride salts : MD simulations on LiCl-NaCl-KCl and its binary constituents." Thesis, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-395271.

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This thesis investigates how well the Alexandria (WBK) force-field can predict themelting point for multi-cation chloride salts with molecular dynamic (MD) simulationsin Gromacs 4.6.7. Researched is the eutectic ternary salt LiCl-NaCl-KCl(53.5-8.6-37.9 mol%) and its binary eutectic constituents(NaCl-LiCl: 22.5-77.5, KCl-NaCl: 50-50, LiCl-KCl: 58.5-41.5 mol%). The choosen salt mixtures are all promising candidates for use as electrolyte in liquidmetal batteries, a potential future power grid storage system. Simulation of the ternary salt's bulk at 298 K over 100 simulations with its ionsdiffere
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