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Dissertations / Theses on the topic 'Mineral properties'

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1

McKinley, J. M. "Heterogeneity of mineral cements and rock properties in sandstones." Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390882.

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2

Laskina, Olga. "Physicochemical properties of mineral dust and sea spray aerosols." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/1674.

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Aerosols are important atmospheric constituents that impact the Earth's radiative balance and climate. The detailed knowledge of the aerosol optical properties is required for a comprehensive analysis of the impacts of aerosols on climate. Mie theory is often used in satellite and ground-based retrieval algorithms to account for atmospheric mineral dust. However, the approximations used in Mie theory are often not appropriate for mineral dust and can lead to errors in the optical properties modeling. Analytic models based on Rayleigh theory that account for particle shapes can offer significan
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3

Watson, D. J. "Mineral magnetic and palaeomagnetic properties of continental shelf sediments." Thesis, University of Edinburgh, 1989. http://hdl.handle.net/1842/14648.

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4

Castro, Filipe Miguel Correia de. "Características químicas e físicas de alguns MTA's: revisão bibliográfica." Master's thesis, [s.n.], 2014. http://hdl.handle.net/10284/4372.

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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária<br>Introdução: O MTA foi preconizado com o intuito de substituir os materiais obturadores que não reuniam as características ideias para tratamentos dentários, tais como retro-obturações e reparação de perfurações radiculares. Objectivo: Pretende-se com este trabalho analisar e sintetizar a evidência científica existente sobre o MTA disponível no mercado que reúna o máximo de caraterísticas químicas e físicas para a prática clínica
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5

Steinke, Isabelle [Verfasser], and Thomas [Akademischer Betreuer] Leisner. "Ice nucleation properties of mineral dusts / Isabelle Steinke ; Betreuer: Thomas Leisner." Heidelberg : Universitätsbibliothek Heidelberg, 2013. http://d-nb.info/1177810352/34.

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6

Spencer, David Lowell. "Physical and Chemical Properties of a New Mineral Trioxide Aggregate Material." VCU Scholars Compass, 2004. http://scholarscompass.vcu.edu/etd/647.

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The objective of this study was to compare the time to final set and compressive strength of the white mineral trioxide aggregate (MTA) formulation to the original grey MTA. To test compressive strength, each MTA formulation was placed into Teflon split molds for four hours at 37° Celsius (C) and 100% humidity. Compressive strength of both MTA formulations was measured at 24 hours (n=12) and 21 days (n=19) using an Instron Testing Machine. For determination of time to final set, each MTA formulation (n=6) was placed into a metal mold and maintained at 37° C and 100% humidity while setting.
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7

Klein, Katherine. "Electromagnetic properties of high specific surface minerals." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20699.

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8

Robinson, Lorraine. "The relationship between the sensible properties of mineral soil samples and those properties determined in the laboratory." Thesis, University of Salford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293789.

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9

Sun, Chenhang. "Surface energetics and acid-base properties of modified and unmodified mineral oxides /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/9846.

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10

Jing, Yi. "Breakdown properties of mineral oil and ester based TiO₂ and BN nanofluids." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27628.

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Dielectric liquids are widely used as electrical insulation industry area. Currently the insulating liquids which are typically employed in high-voltage (HV) systems are naphthenic mineral oils. However, stringent environmental protection regulations encourage operators of HV equipment to use more environmentally friendly liquids. There is also a strong demand for the development of industry which requires insulating liquids provide advanced dielectric properties. Natural and synthetic esters are considered as potential substitutes for traditional mineral oils due to their environmental friend
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11

Meredith, Kelly Robyn. "The Influence of Soil Reconstruction Methods on Mineral Sands Mine Soil Properties." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31006.

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Significant deposits of heavy mineral sands (primarily ilmenite and zircon) are located in Virginia in Dinwiddie, Sussex and Greensville counties. Most deposits are located under prime farmland, and thus require intensive reclamation when mined. The objective of this study was to determine the effect of four different mine soil reconstruction methods on soil properties and associated rowcrop productivity. Treatments compared were 1) Biosolids-No Tillage, 2) Biosolids-Conventional Tillage, 3) Lime+NPK fertilized tailings (Control), and 4) 15-cm Topsoil over lime+P treated tailings. Treated plot
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12

Bonneville, Steeve. "Kinetics of microbial Fe(III) oxyhydroxide reduction: The role of mineral properties." Doctoral thesis, Utrecht University, Utrecht (Netherlands), 2005. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/222061.

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13

Xu, George Jianzhou. "Influence of PSMC and other mineral admixtures on the properties of cement mortar." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30300.pdf.

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14

Sullivan, Ryan Christopher. "Heterogeneous chemistry of atmospheric mineral dust particles and their resulting cloud-nucleation properties." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p3331170.

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Thesis (Ph. D.)--University of California, San Diego, 2008.<br>Title from first page of PDF file (viewed Dec. 11, 2008). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.
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15

Zhou, Yuan. "Electrical properties of mineral oil and oil/impregnated pressboard for HVDC converter transformers." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/376538/.

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Modern power industry requires higher performance dielectric liquids. Mineral oil is one of those most important and widely used insulating materials. Recently, research on the dielectric properties of mineral oil insulation reveal that oil resistivity can greatly influence the field distribution within an oil-pressboard insulation system in a DC field environment, especially during polarity reversals. Basic test methods such as dielectric spectroscopy and polarization and depolarization measurement have already been used to test mineral oil and pressboard conductivity. However, the knowledge
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16

Nelson, McKenzie Louise. "Predictions of Radius Bending Strength by Radius Stiffness, Mineral, and Ulna Mechanical Properties." Ohio University Art and Sciences Honors Theses / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ouashonors1492615282195033.

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17

Baiden, Nanakow A. "Characterisation of OmcA From Shewanella oneidensis MR-1 : biophysical and mineral reduction properties." Thesis, University of East Anglia, 2014. https://ueaeprints.uea.ac.uk/53417/.

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Several Shewanella spp. are versatile in the respiratory substrates they use. A novel set of respiratory substrates implicated are insoluble Fe(III) and Mn(III,IV) oxides. OmcA from Shewanella oneidensis MR-1 plays a role in the terminal electron transfer during respiratory mineral reduction, but has minimal or contrasting properties in the literature. A suite of biophysical techniques confirmed the bis-histidine axial ligation of all OmcA’s haem content in the crystal structure and in solution. The paramagnetic resonance feature designated “LS3” was identified to be unique to OmcA. However th
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18

Cymes, Brittany Allison. "Catalytic Properties of Novel Microporous Minerals." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1587730697926361.

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19

Robert, Arnaud Roland Alain. "An investigation of the effects of fillers on the properties of rotationally moulded polyethylene." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326033.

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20

Branco, Ana Carolina Franco Versos Brígida. "Caracterização nutricional e toxicológica de espécies de plantas silvestres. Análise mineral, antioxidante e de lectinas." Master's thesis, ISA/UL, 2015. http://hdl.handle.net/10400.5/8510.

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Mestrado em Engenharia Alimentar - Qualidade e Segurança Alimentar - Instituto Superior de Agronomia<br>In the present work, leaves of four wild plants (Rumex crispus (curly dock), Sinapis arvensis (wild mustard), Beta maritima (sea beet) and Sonchus oleraceus (sow thistle)) were studied in order to analyse for their mineral composition, phenolic content, antioxidant capacity, and detection of lectins (anti-nutritive compound). The mineral and antioxidant study of different species was compared with cultivated plants of same family (rhubarb, turnip greens, common chard and lettuce). In wild p
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21

Christianto, Heru Ari. "Effect Of Chemical And Mineral Admixtures On The Fresh Properties Of Self Compacting Mortars." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605322/index.pdf.

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Fresh properties of mortars are important factors in altering the performance of self compacting concrete (SCC). Measurement of the rheological properties of the fine mortar part of concrete is generally used in the mix design of SCC. It can be stated that SCC rheology can be optimized if the fine mortar part of concrete is designed properly. However, measurement of the rheological properties is often impractical due to the need for complex equipment. Therefore, more practical methods of assessing mortar workability are often preferred. In this study, four mineral admixtures, three supe
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22

Mwanga, Abdul-Rahaman. "Development of a geometallurgical testing framework for ore grinding and liberation properties." Doctoral thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-59904.

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Efficient measurement methods for comminution properties are an important prerequisite for testing the variability of an ore deposit within the geometallurgical context. This involves the investigation of effects of mineralogy and mineral texture on the breakage of mineral particles. Breakage properties of mineral particles are crucial for the liberations of minerals and the energy required for that. For process optimization and control purposes, comminution indices are often used to map the variation of processing properties of an entire ore body (e.g. Bond work index). Within the geometallur
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23

Imbert, Laurianne. "Effets de l'ostéogénèse imparfaite sur les propriétés mécaniques et minérales de l'os cortical chez l'enfant." Thesis, Ecully, Ecole centrale de Lyon, 2014. http://www.theses.fr/2014ECDL0042/document.

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L’Ostéogénèse Imparfaite (OI) est une maladie génétique dont une des conséquences est la fragilité accrue du squelette, lui valant ainsi le nom de « maladie des os de verre ». Il existe plusieurs phénotypes reflétant différents niveaux de sévérité, néanmoins certaines caractéristiques, comme une petite taille et des déformations des os longs, sont fréquemment observées en cas d’OI. Aujourd’hui peu de traitements existent et aucun n’est curatif. Avant d’espérer pouvoir en mettre un au point, il faut d’abord comprendre et quantifier les mécanismes impliqués et ces travaux de thèse s’inscrivent d
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24

Meland, Brian Steven. "An investigation into particle shape effects on the light scattering properties of mineral dust aerosol." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/1024.

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Mineral dust aerosol plays an important role in determining the physical and chemical equilibrium of the atmosphere. The radiative balance of the Earth's atmosphere can be affected by mineral dust through both direct and indirect means. Mineral dust can directly scatter or absorb incoming visible solar radiation and outgoing terrestrial IR radiation. Dust particles can also serve as cloud condensation nuclei, thereby increasing albedo, or provide sites for heterogeneous reactions with trace gas species, which are indirect effects. Unfortunately, many of these processes are poorly understood du
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25

Guiral, Vega Juan Sebastian. "Textural and Mineralogical Characterization of Li-pegmatite Deposit: Using Microanalytical and Image Analysis to Link Micro and Macro Properties of Spodumene in Drill Cores. : Keliber Lithium Project, Finland." Thesis, Luleå tekniska universitet, Mineralteknik och metallurgi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70422.

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Lithium represents one of the strategic elements for the rest of the 21st century due to its increasing demand in technological applications. Therefore, new efforts should be focused on the optimization of mineral characterization processes, which link the ore properties with its behaviour during downstream processes. These efforts should result in reducing operational risks and increasing resources utilization. The methodology presented in this study is based on the application of several classification techniques, aiming the mineral and textural characterization of two spodumene pegmatite de
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26

Tesche, Matthias. "Vertical profiling of aerosol optical properties with multiwavelength aerosol lidar during the Saharan Mineral Dust Experiments." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-71257.

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Die vorliegende Arbeit beschäftigt sich mit der Auswertung und den Ergebnissen von Mehrwellenlängen–Polarisations–Ramanlidarmessungen, die im Rahmen des Saharastaubschließungsexperiments Saharan Mineral Dust Experiment (SAMUM) durchgeführt wurden. Das SAMUM–Projekt erstreckte sich über zwei Intensivmesszeiträume im Mai und Juni 2006 in Marokko (SAMUM–1) und im Januar und Februar 2008 auf den Kapverdischen Inseln (SAMUM–2). Desweiteren werden zusätzliche Lidarmessungen besprochen, die im Mai und Juni 2008 auf den Kapverdischen Inseln durchgeführt wurden. Die geometrischen und optischen Eigensch
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27

Lee, Yong Seob. "Investigation of the optical and cloud forming properties of pollution, biomass burning, and mineral dust aerosols." Texas A&M University, 2003. http://hdl.handle.net/1969.1/3947.

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This dissertation describes the use of measured aerosol size distributions and size-resolved hygroscopic growth to examine the physical and chemical properties of several particle classes. The primary objective of this work was to investigate the optical and cloud forming properties of a range of ambient aerosol types measured in a number of different locations. The tool used for most of these analyses is a differential mobility analyzer / tandem differential mobility analyzer (DMA / TDMA) system developed in our research group. To collect the data described in two of the chapters of this diss
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28

Bobko, Christopher Philip 1981. "Assessing the mechanical microstructure of shale by nanoindentation : the link between mineral composition and mechanical properties." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/47731.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2008.<br>Includes bibliographical references (leaves 335-351).<br>Shale is a multi-phase, multi-scale sedimentary rock that makes up 75% of the earth's sedimentary basins and is especially critical in petroleum engineering applications. At macroscopic scales, shales possess a diverse set of possible compositions, resulting in a diverse set of mechanical properties. This thesis assesses microstructure and material invariant properties of shale as the link between engineering performance and com
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Jordaan, Willem Jacobus. "The variation of sinter strength in the sinter bed due to the mineral phase distribution." Diss., Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-07012005-124327/.

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30

Salloum, Myrna Joyce. "Sorption of organic compounds to soil and geologic samples that vary in mineral content and diagenic properties." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ46913.pdf.

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31

Valverde, Huaranga J. C., G. L. Baldeon, and S. Caballero-García. "In Vitro Sealing Properties of Calcium-Enriched Mixture and Mineral Trioxide Aggregate Orifice Barriers during Intra-Coronal Bleaching." Iranian Association of Endodontics, 2017. http://hdl.handle.net/10757/622331.

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Inkapööl, Laura. "Bone properties of mink (Neovison vison) exposed to environmentally relevant levels of PCB." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-152505.

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An alarming reduction in the numbers of several species of seals in the Baltic Sea was observed during the second half of the 1900s. Organochlorines, particularly PCBs, were found to cause the decline, inducing sterility and severe bone loss. If bone tissue is affected by PCBs, bone could be used as a biomarker for exposure to environmental contaminants. To isolate the effects of PCBs from other factors, experimental studies have been conducted on model species, such as mink. In this study, 58 mink femurs from three different treatment groups and one control group were analysed. Altogether 14
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Rückert, Marcel, Katharina Schmitz, and Hubertus Murrenhoff. "Comparison of Heat-Properties and its Implications between Standard-Oil and Bio-Oil." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200109.

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An important criteria for optimising hydraulic systems is their size. Especially for tanks and heat exchangers oil parameters as heat capacity and thermal conductivity have a big influence on the size. Additionally, various oils differ in their parameters. Accordingly, the heat capacity and thermal conductivity need to be known. However, little research has been done. Data-sheets usually do not provide any thermal data. In this paper, the thermal conductivity is measured for varying types of hydraulic oils. The thermal conductivity is determined by a newly designed test-rig measuring the radia
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Yazan, Kazim. "Effects Of Retempering With Superplasticizer On Properties Of Prolonged Mixed Mineral Admixture Containing Concrete At Hot Weather Conditions." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/3/12606751/index.pdf.

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Concrete which is manufactured in a mixing plant to be delivered to construction site in unhardened and plastic stage is called ready-mixed concrete. Because of technical and economical reasons, many mineral and chemical admixtures are used in ready-mixed concrete production. As a result of extra mixing and delayed placing of ready-mixed concrete (especially at hot weather conditions), there can be many problems about concrete, like slump loss. Addition of water for retempering concrete is the usual procedure, but addition of water without proper adjustment in mixture proportions, adversely
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Gribble, Christopher Mark. "Surface adsorption and pore-level properties of mineral and related systems of relevance to the recycling of paper." Thesis, University of Plymouth, 2010. http://hdl.handle.net/10026.1/315.

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There is a significant problem for the paper recycling industry known as “stickies”. “Stickies” are tacky species, present in recycled paper and coated broke, derived from coating formulations, adhesives, etc. They impact negatively on paper quality and cause web runnability problems by deposit build-up. To sustain recycling, stickies are controlled by adsorbing them onto minerals added to the recycled stock. So the aim of the project was to characterise non-porous and porous minerals suitable for paper-making, and then use the knowledge gained to improve the adsorption of stickies. The pore l
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Tribst, Marcelo Fernandes. "Efeitos dos alimentos funcionais: probióticos, prebióticos e simbióticos no tecido ósseo de ratos expostos cronicamente a fumaça de cigarro: estudos pré-clínicos randomizados." Universidade do Oeste Paulista, 2018. http://bdtd.unoeste.br:8080/jspui/handle/jspui/1121.

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Submitted by Michele Mologni (mologni@unoeste.br) on 2019-01-23T12:44:40Z No. of bitstreams: 1 Marcelo Fernandes Tribst.pdf: 777315 bytes, checksum: b27a7e6b55bc34cf1e1df838b6e087c4 (MD5)<br>Made available in DSpace on 2019-01-23T12:44:40Z (GMT). No. of bitstreams: 1 Marcelo Fernandes Tribst.pdf: 777315 bytes, checksum: b27a7e6b55bc34cf1e1df838b6e087c4 (MD5) Previous issue date: 2018-09-21<br>Smoking is a global concern because of the impact on public health, particularly in causing chronic illness and suffering for millions of people and is a leading cause of preventable deaths worldwide. T
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Gierlus, Kelly M. "Laboratory studies of the physicochemical properties of mixed organic/mineral dust atmospheric aerosols: hygroscopicity and cloud condensation nuclei activity." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/2704.

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Mineral dust aerosol generated from windblown soil can participate in climate forcing either directly through scattering or absorbing solar radiation or indirectly through acting as cloud condensation nuclei (CCN). In recent field studies organic material, such as oxalic acid and humic-like substances (HULIS), has been shown to be present in mineral dust aerosol. The presence of these internally mixed organic compounds can alter the physicochemical properties of the dust particles in the Earth's atmosphere. Thus, in this dissertation research the hygroscopic growth and CCN activity of model hu
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Groenewald, Nico Albert. "Measuring the dielectric properties of crushed copper ore." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5230.

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Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Previous work has shown that microwave heating of mineral ores induces micro cracks within the ore structure, which can be attributed to the difference in the adsorption of microwaves amongst the different mineral phases. This reduces the energy required during subsequent grinding and enhances the liberation of valuable minerals. In order to design microwave applicators for this purpose, knowledge of the effective dielectric properties of the crushed ore is required. Of particular interest is the
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Cataldi, Joseph Derik. "Effects of Biosolids on Tall Fescue-Kentucky Bluegrass Sod Production and Soil Chemical and Physical Properties." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/51159.

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Composted biosolids have been shown to enhance turfgrass establishment and growth more than fertilizer alone, but few studies have investigated the production of turfgrass using uncomposted biosolids. Increasingly employed treatment methods that generate pathogen-free, low pollutant-containing biosolids are creating alternative products for use in urban settings.  Understanding the effects of these uncomposted and alternative biosolids products on turfgrass culture and soil chemical and physical properties is essential to understanding the benefits these products may provide in sod production
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Köhler, Claas H. "Radiative Effect of Mixed Mineral Dust and Biomass Burning Aerosol in the Thermal Infrared." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-131635.

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This thesis treats the optical properties of mixed mineral dust and biomass burning aerosol in the thermal infrared (TIR) based on Fourier Transform infrared spectrometer (FTIR) measurements and radiative transfer simulations. The measurements were part of the Saharan Mineral Dust Experiment 2 (SAMUM-2) conducted from January to February 2008 at Praia, Cape Verde. The large amount of different instruments co-located at the main field site during the campaign resulted in a unique dataset comprising in-situ information and remote sensing data perfectly suited for column closure studies. The ulti
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Vieira, Junior Waldemir Francisco 1989. "Efeito da aplicação de diferentes dentifrícios previamente ao clareamento dental nas propriedades físicas e conteúdo mineral do esmalte = Effect of different toothpastes application prior to dental bleaching on enamel physical properties and mineral content." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/289480.

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Orientadores: José Roberto Lovadino, Debora Alves Nunes Leite Lima<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-27T00:14:41Z (GMT). No. of bitstreams: 1 VieiraJunior_WaldemirFrancisco_M.pdf: 2625418 bytes, checksum: 9b4424cf9945e3e37e733389e7cacc32 (MD5) Previous issue date: 2015<br>Resumo: Objetivo: Avaliar o efeito de dentifrícios com diferentes princípios ativos aplicados previamente ao clareamento dental com peróxido de hidrogênio 35% (PH) nas propriedades físicas e cromáticas do esmalte, cont
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Choi, Hyung Jin. "Characterization of properties and spatiotemporal fields of mineral aerosol and its radiative impact using CALIPSO data in conjunction with A-Train satellite and ground-based observations and modeling." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41105.

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The Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) mission provides unique measurements of vertical profiles of aerosols and clouds and their properties during day and night-time over all types of surfaces. This information has the potential to significantly improve our understanding of the properties and effects of aerosol and clouds. This dissertation presents the results of a comprehensive analysis of CALIPSO lidar (version 2 and version 3.01) data in conjunction with A-Train satellite and ground-based observations aimed at characterizing mineral aerosol in Eas
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Shvarova, Olga Y. "The self-assembly of nucleic acid bases on metal and mineral surfaces." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:1658dcab-f1d4-4a7f-998c-7193bad088bf.

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The ability of RNA bases to self-assemble into larger structures is an important research area relevant to the origins of life. In the RNA helix the bases are arranged on a sugar-phosphate carcass but it has been suggested that the initial ordering could form on a flat surface. This thesis is an attempt to establish experimentally whether the complementary RNA bases, adenine and uracil, have the ability to self-assemble into large ordered structures when adsorbed on metal and mineral surfaces. The Au (111) surface was chosen as a preferred substrate as it is flat, relatively free of defects, c
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Sampson, Mark Ian. "Influence of the cell properties of acidophilic bacteria during attachment to mineral sulfides and consumption during the oxidation of ferrous iron." Thesis, University of Exeter, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297789.

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Alexander, Jennifer Mary. "Optical properties of mineral dust aerosol including analysis of particle size, composition, and shape effects, and the impact of physical and chemical processing." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/1819.

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Atmospheric mineral dust has a large impact on the earth’s radiation balance and climate. The radiative effects of mineral dust depend on factors including, particle size, shape, and composition which can all be extremely complex. Mineral dust particles are typically irregular in shape and can include sharp edges, voids, and fine scale surface roughness. Particle shape can also depend on the type of mineral and can vary as a function of particle size. In addition, atmospheric mineral dust is a complex mixture of different minerals as well as other, possibly organic, components that have been m
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46

Vrána, Tomás. "Impact of moisture on long term performance of insulating products based on stone wool." Licentiate thesis, KTH, Civil and Architectural Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4490.

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<p>Demands for energy have been increasing in the whole world. According to higher consumption, the price of energy rises yearly too. This evokes usage of insulating products in a wider range. By adding insulation, we lower the amount of energy needed to heat our homes, resulting in fewer associated greenhouse gas emissions and a lower monthly heating bill. Savings depend on insulation thicknesses and on conditions, in which the insulant is kept. Mineral insulation based on stone wool is also a member of building insulants that defends buildings and constructions against temperature changes of
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47

Gyllencreutz, Richard. "Holocene and Latest Glacial Paleoceanography in the North-Eastern Skagerrak." Doctoral thesis, Stockholm : Department of Geology and Geochemistry, Stockholm University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-413.

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48

Silva, Janaina Lima da. "Obtenção de concentrado protéico de folhas e parte aérea da mandioca (Manihot Esculenta Crantz)." Universidade Estadual do Oeste do Parana, 2007. http://tede.unioeste.br:8080/tede/handle/tede/223.

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Made available in DSpace on 2017-05-12T14:47:15Z (GMT). No. of bitstreams: 1 Janaina Lima da Silva.pdf: 3461069 bytes, checksum: 86eccae232302ee27032f84e3721edb7 (MD5) Previous issue date: 2007-07-17<br>Leaves and aerial part of the cassava are great protein, vitamins, minerals and essential amino acids sources, being these abundant and in low cost. However, this residual is still little explored. The cassava leaves use as protein source is, many times, not stimulated by the presence of anti nutritional factors what indicates the obtainment of proteic concentrates. The objective of this stud
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49

Qu, Zihan. "Chemical properties of continental aerosol transported over the Southern Ocean : Patagonian and Namibian sources." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066002/document.

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Patagonie et la Namibie sont deux sources importantes d'aérosol minéral qui alimente la section Atlantique Sud de l'océan Austral avec les micronutriments.L'objet de ma thèse est d'étudier 1) la concentration atmosphérique et la variation temporel de la poussière en Patagonie, 2) l'hétérogénéité spatiale de composition élémentaire de poussière en Patagonie et en Namibie, et 3) la solubilité élémentaire de poussière en Patagonie et en Namibie. Ces trois aspects sont les principaux enjeux pour modéliser les inventaires des émissions de micronutriments biodisponibles à partir de sources de poussi
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50

Delibas, Tughan. "Effects Of Granulated Blast Furnace Slag Trass And Limestone Fineness On The Properties Of Blended Cements." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614072/index.pdf.

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The aim of this research was to determine the effects of the fineness of different mineral additives on loss on ignition, heat of hydration, physical, mechanical and chemical properties of blended cements. For that purpose, portland cement clinker was replaced with granulated blast furnace slag (GBFS), natural pozzolan (NP) and limestone (L) at 6%, 20% and 35% replacement levels. Blended cements containing GBFS and NP were ground to a fineness of 3000, 5000 and 6000 cm2/g. Cements containing L were ground to 3000 cm2/g, 4000 cm2/g and 4500 cm2/g. All of the blended cement types mentioned above
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