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Dissertations / Theses on the topic 'Bulk Density and Specific Density'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Carrijo, Priscila Meireles. "Análise da influência da massa específica de agregados graúdos provenientes de resíduos de construção e demolição no desempenho mecânico do concreto." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-11052006-143829/.

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Em virtude de muitas dúvidas ainda existentes, referentes ao desempenho e durabilidade dos concretos com agregados de RCD reciclados, sua utilização até o momento é limitada, não chegando aos níveis desejáveis e necessários. Somam-se a essas, a falta de gestão, de ferramentas de controle de qualidade, de normalização e de melhoria nas operações unitárias de beneficiamento do RCD. Os agregados reciclados apresentam características físicas e comportamento bastante heterogêneo, o que dificulta sua utilização com confiabilidade, principalmente em situações que demandam um maior controle e responsa

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2

Liu, Chang Materials Science &amp Engineering Faculty of Science UNSW. "Bulk density and angle of repose of coal." Awarded by:University of New South Wales. Materials Science & Engineering, 2007. http://handle.unsw.edu.au/1959.4/40495.

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This thesis reports a study on the effects of size distribution, moisture content and oil addition on bulk density and angle of repose of coal. The experimental work includes four stages. The first stage is to develop reliable experimental techniques. The results confirm that ASTM cubic foot test is reliable for measurement of bulk density and angle of repose if properly operated, although the latter is better measured in a piling process. Stages 2 and 3 are to investigate the effects of size distribution by using -3.55mm% for stage 2 and mean size do.s for stage 3, water content and oil addit

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3

Price, Philip. "Comparison of Soil Bulk Density After Poultry Litter Application." TopSCHOLAR®, 2007. http://digitalcommons.wku.edu/theses/416.

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During the Spring and Fall of 2006, a study was conducted at the Agricultural Research and Education Complex of Western Kentucky University to monitor the effects of poultry litter application on soil bulk density. A randomized split block design was used for this study. The soil was a Crider silt loam (Typic Paleudalf). Poultry litter treatments were compared with inorganic fertilizers. The same basic fertility treatments were applied in this study from 2001-2006. Those treatments consisted of poultry litter applied at the nitrogen rate (NPL), poultry litter applied at the phosphorus rate onl

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4

Sahu, Laxmi Kumari D'Souza Nandika Anne. "Bulk and interfacial effects on density in polymer nanocomposites." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3619.

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5

Sahu, Laxmi Kumari. "Bulk and Interfacial Effects on Density in Polymer Nanocomposites." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3619/.

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The barrier properties of polymers are a significant factor in determining the shelf or device lifetime in polymer packaging. Nanocomposites developed from the dispersion of nanometer thick platelets into a host polymer matrix have shown much promise. The magnitude of the benefit on permeability has been different depending on the polymer investigated or the degree of dispersion of the platelet in the polymer. In this dissertation, the effect of density changes in the bulk and at the polymer-platelet interface on permeability of polymer nanocomposites is investigated. Nanocomposites of nylon,

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6

Valenzuela, Wilfredo. "Variability in the determination of bulk and maximum density of hot mix asphalt." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/2264.

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Roads are a vital link, in particular in a country like Australia where distances are extensive. Western Australia is no exception, with Main Roads, Western Australia„s State road authority, managing more than 17,800 kilometres of highways and state roads with a large local government road network of almost 164,000 kilometres (Main Roads Western Australia 2011). For quality control measures, Main Roads Western Australia (MRWA) requires quantification of the variability of test methods to establish accepted parameters, and minimum and maximum air voids for the construction of dense-graded hot m

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7

Taalab, Khaled Paul. "Modelling soil bulk density using data-mining and expert knowledge." Thesis, Cranfield University, 2013. http://dspace.lib.cranfield.ac.uk/handle/1826/8273.

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Data about the spatial variation of soil attributes is required to address a great number of environmental issues, such as improving water quality, flood mitigation, and determining the effects of the terrestrial carbon cycle. The need for a continuum of soils data is problematic, as it is only possible to observe soil attributes at a limited number of locations, beyond which, prediction is required. There is, however, disparity between the way in which much of the existing information about soil is recorded and the format in which the data is required. There are two primary methods of represe

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8

Davidson, L. E. "Bulk density and carbon storage of lowland peat bogs in Northern Ireland." Thesis, Queen's University Belfast, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273078.

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9

Tian, Liyun. "Density Functional Theory Study of Bulk Properties of Metallic Alloys and Compounds." Doctoral thesis, KTH, Tillämpad materialfysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210305.

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First-principles methods based on Density functional theory (DFT) are now adopted routinely to calculate the properties of materials. However, one of the biggest challenges of DFT is to describe the electronic behaviors of random alloys. One of the aims of this thesis is to study binary alloys, e.g. Ti-Al, Cu-Au, and multi-component alloys by using two models for chemically random structures: the special quasi-random structure (SQS) and coherent potential approximation (CPA). I investigate these approaches by focusing on the local lattice distortion (LLD) and the crystal symmetry effects. With

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10

Paxton, Naomi C. "Additive manufacturing patient-specific porous high-density polyethylene surgical implants." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/205616/1/Naomi_Paxton_Thesis.pdf.

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This thesis investigated how 3D printing technology can be used to manufacture patient-specific surgical implants for maxillofacial and cranial reconstruction. Novel 3D printed implants were compared to current clinical gold-standard implants to assess material properties, implant structure and internal architecture, and the impact of manufacturing conditions such as porosity and surface treatments on cell attachment and soft tissue healing in a small animal model. These novel implants demonstrated rapid soft tissue and vascular ingrowth, showing promise for patient-specific implant manufactur

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11

Kumar, Santosh. "DENSITY-FUNCTIONAL THEORY APPLIED TO PROBLEMS IN CATALYSIS AND ELECTROCHEMISTRY." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2807.

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We study the structure and energetics of water molecules adsorbed at ceria (111) surfaces below one monolayer coverage using density-functional theory. The results of this study provide a theoretical framework for interpreting recent experimental results on the redox properties of water at ceria (111) surfaces. In particular, we have computed the structure and energetics of various absorption geometries at stoichiometric ceria (111) surface. In contrast to experiment results, we do not find a strong coverage dependence of the adsorption energy. For the case of reduced surface, our results show

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12

Härtel, Andreas [Verfasser]. "Density functional theory of hard colloidal particles: From bulk to interfaces / Andreas Härtel." Aachen : Shaker, 2013. http://d-nb.info/1051574218/34.

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13

Schaub, Stacey Monica. "A method for characterizing the bulk density of compost and other compressible materials." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq22669.pdf.

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14

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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15

Luo, Weiqi. "Atomistic Materials Modeling of Complex Systems: Carbynes, Carbon Nanotube Devices and Bulk Metallic Glasses." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1218567734.

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16

Zhao, Yihai (Simon). "Relative bulk density as an index of soil compaction and forest productivity in British Columbia." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/10318.

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Soil compaction often limits conifer regeneration on sites degraded by construction of landings and roads, but inadequate understanding of compaction characteristics has sometimes led to inappropriate rehabilitation efforts. This warrants development of new methods to assess compaction and its relation to tree growth. The objective of this study was to develop a high-level integration indicator that will characterize compaction of forest soils and that could be correlated to tree height growth. Mineral particle density of soils from interior British Columbia (BC) forests varied significantly a

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17

Goering, Timothy James 1961. "Use of gamma-ray geotomography to measure dry bulk density and unsaturated flow through tuff." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/191995.

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Gamma-ray geotomography was used to measure the dry bulk density and porosity distributions in two cores of slightly-welded tuff. The cores were then subjected to a point or non-point source of water, and water movement through the cores was observed using tomography. Three numerical methods, the Algebraic Reconstruction Technique (ART), modified ART, and Singular Value Decomposition (SVD) were used to reconstruct the tomographs, and SVD was found to be superior for the simple tomographs of this study. Several tomographic models were used to determine the maximum image resolution from a given

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18

Arehart, Eric. "Dioxin Alters Human Low-Density and Very Low-Density Lipoprotein Structure with Evidence for Specific Quenching of TRP-48 in Apolipoprotein C-H." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/ArehartES2003.pdf.

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19

Gaus, Katharina. "Interpreting the efficacy of low-density lipoprotein specific ligands with surface plasmon resonance." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624402.

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20

Hemlepp, Laura Ann. "Protein Intake and Site Specific Bone Mineral Density in Caucasian Male Resistance Trainers." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1279465959.

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21

Bhagurkar, Ashutosh. "Processing of MgB2 bulk superconductor by infiltration and growth." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/14777.

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Superconductivity in magnesium diboride (MgB2) was discovered in 2001. The relatively high Tc (39 K), high critical current density, long coherence length (∼6 nm), low raw material cost, lower density and relative ease of fabrication make this material an exciting choice for practical applications. Furthermore, lower anisotropy and strongly linked current flow in untextured polycrystalline samples, unlike its HTS counterparts, has enabled the development of different processing routes to fabricate MgB2 in the form of wires, tapes, thin films and bulks. Conventionally, MgB2 is synthesized by in

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22

Schulz, Matthias C., Jan Kowald, Sven Estenfelder, et al. "Site-Specific Variations in Bone Mineral Density under Systemic Conditions Inducing Osteoporosis in Minipigs." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-230646.

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Osteoporosis is a systemic bone disease with an increasing prevalence in the elderly population. There is conflicting opinion about whether osteoporosis affects the alveolar bone of the jaws and whether it poses a risk to the osseointegration of dental implants. The aim of the present study was to evaluate the effects of systemic glucocorticoid administration on the jaw bone density of minipigs. Thirty-seven adult female minipigs were randomly divided into two groups. Quantitative computed tomography (QCT) was used to assess bone mineral density BMD of the lumbar spine as well as the mandible

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23

Jayatissa, Dangallage Nimal. "Tillage effects on soil-water-air matrix and prediction of soil bulk density from cone index data." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-08252008-162557/.

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24

Aritake, T., T. Noda, H. Shimizu, Y. Yokomizu, T. Matsumura, and N. Murayama. "Relation between critical current density and flux flow resistivity in Bi2223 bulk element for fault current limiter." IEEE, 2003. http://hdl.handle.net/2237/6788.

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25

Muscenti, Thomas Michael. "Density Functional Theory Study of Rutile SiO₂ Stishovite: An Electron Pair Description of Bulk and Surface Properties." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/10179.

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The bulk structure and the nonpolar, stoichiometric (110) surface of stishovite, rutile structure type SiO₂, has been studied using a first principles, density functional method. The geometric and electronic structure, including the density of states, charge density, and electron localization function for both the bulk and the surface have been examined. The electron pair properties of both bulk and surface-layer atoms were found to be similar to molecular analogs. The analogs allowed for the description of surface electronic structure using simple molecular models. The adsorption of hydrogen

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26

Weston, Leigh. "First-Principles Theoretical Studies of Bulk, Defect and Interface properties of Oxide Semiconductors." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13806.

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Oxide semiconductors have been shown to exhibit rich physics related to their bulk, defect and interface properties. First-principles calculations have and will continue to play a major role in developing an understanding of the microscopic origins of these phenomena. In this thesis, first-principles studies are presented for several oxide semiconductors, with a view to understand how their microscopic properties ultimately determine device functionality. In Chapter 3, a detailed study of bulk SrZrO3 and Sr(Ti,Zr)O3 alloys is performed. For Sr(Ti,Zr)O3 alloys with 50% Ti concentration, we fin

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27

Fajardo, Gabriela Isabel. "Physical and Chemical Soil Properties of Ten Virginia Department of Transportation (VDOT) Mitigation Wetlands." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/31304.

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In 1998, the Virginia Department of Transportation (VDOT) adopted standards for soil handling and amendments to improve created non-tidal wetland soil conditions. This study was conducted in sites where these new reconstruction practices were supposedly being implemented. Specific objectives were (i) to determine the relative effects of soil reconstruction practices on mitigation site soils, (ii) to assess the degree to which hydric soil indicators were present, and (iii) to evaluate the relative edaphic potential of mitigation site soils. Soil physical, chemical and morphological properties

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28

Magoba, Moses. "Investigation of the acoustic impedance variations of the upper shallow marine sandstone reservoirs in the Bredasdorp basin, offshore South Africa." University of the Western Cape, 2019. http://hdl.handle.net/11394/7028.

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Philosophiae Doctor - PhD<br>Investigation of the acoustic impedance variations in the upper shallow marine sandstone reservoirs was extensively studied from 10 selected wells, namely: F-O1, F-O2, E-M4, E-CN1, E-G1, E-W1, F-A10, F-A11, F-A13, and F-L1 in the Bredasdorp Basin, offshore, South Africa. The studied wells were selected randomly across the upper shallow marine interval with the purpose of conducting a regional study to assess the variations in the acoustic impedance across the reservoirs using wireline log and core data. The datasets used in this study were geophysical wireline logs

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29

Härtel, Andreas [Verfasser], Hartmut [Akademischer Betreuer] Löwen, and Stefan [Akademischer Betreuer] Egelhaaf. "Density functional theory of hard colloidal particles: From bulk to interfaces / Andreas Härtel. Gutachter: Hartmut Löwen ; Stefan Egelhaaf." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2013. http://d-nb.info/103036513X/34.

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30

Ficklin, Robert L. "An empirical approach for better estimating soil organic carbon and bulk density using a fixed-volume sampling method /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3074401.

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31

Mirra, Inês Martins Pereira. "Influência das diferentes granulometrias na composição química das cascas de Eucalyptus globulus Labill., Betula pendula Roth, Picea abies (L.) Karst, Pinus sylvestris L. e Pinus pinea L." Master's thesis, ISA/UTL, 2011. http://hdl.handle.net/10400.5/4187.

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Mestrado em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia<br>The goal of this report is to characterize the bark of five industrially important forest species in Europe - Eucalyptus globulus, Betula pendula, Picea abies, Pinus sylvestris e Pinus pinea and to define their potential use as a source of value added chemical products. It was performed the anatomical characterization of bark tissues (dissociated elements), the selective fractionation (size distribution, characterization of particle shape, separation of density and determination of bulk density),

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32

Wejheden, Carolina. "Studies on gender-specific disruption of bone tissue homeostasis by dioxins." Stockholm : Institutet of Environmental Medicine, Karolinska Institutet, 2010. http://diss.kib.ki.se/2010/978-91-7409-728-3/.

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33

Njeru, Sarah Kangai. "Tillage effects on the aggregate-associated organic carbon and bulk density in some South African soils with different texture." Thesis, University of Fort Hare, 2015. http://hdl.handle.net/10353/2512.

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Tillage operations disrupt the soil structure resulting in aggregates of various sizes and altered bulk density. Moreover, tillage influences soil carbon pools and many other soil physical properties. The objectives of this study were to determine, in various South African soils under different tillage systems, the following. (1) Amount of aggregate-associated soil organic carbon (SOC), (2) soil compressibility, and (3) relationship between compressibility, texture and the aggregate-associated SOC. The soil samples used in this study were collected from six different sites in Eastern Cape Prov

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34

Back, Michael Patrick. "Working Backwards: Enhancing Forest Restoration by Reversing Effects of Surface Mine Reclamation on Soil Bulk Density and Soil Chemistry." Kent State University Honors College / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors162014875138985.

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35

Wilson, Nicholas Craig, and nick wilson@csiro au. "An investigation of hybrid density functional theory in the calculation of the structure and properties of transition metal oxides." RMIT University. Applied Sciences, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091217.142149.

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This thesis is an investigation into the accuracy of hybrid density functional theory to predict the properties of two transition metal oxides: Ilmenite (FeTiO3) and haematite (sigma-Fe2O3). The hybrid density functional theory examined is Becke's B3LYP functional, which is an empirical mix of density functional theory and exact nonlocal exchange from Hartree-Fock theory. For bulk ilmenite, results from the B3LYP functional are compared with Hartree-Fock and pure density functional theory calculations. The computed properties are found to be very sensitive to the treatment of electronic exchan

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36

Munger, Emily LaRee. "Alteration to Astrocyte Density and Morphology across Mammalia with Specific Attention to Primate Brain Evolution and Aging." Kent State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=kent1594638449298271.

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37

Mills, Claire D. "Development of a sport specific anthropometric calibration model to estimate whole body density of professional football players." Thesis, University of Gloucestershire, 2014. http://eprints.glos.ac.uk/2272/.

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There are currently no calibration models that allow whole body density in professional footballers to be estimated. As such, there is a need to develop practical calibration models in order to make sound body composition judgements. The aim of this thesis is threefold. Firstly, to examine the measurement reliability of a range of anthropometric measures, residual lung volume, air displacement plethysmography and hydrostatic weighing. Secondly, to establish reliability and precision of body composition measures used within existing calibration models which estimate whole body density from the

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38

Rahe, Nathan. "RESTORATION OF RIPARIAN BUFFER FUNCTION IN RECLAIMED SURFACE MINE SOILS IN SOUTHERN ILLINOIS." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1149.

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Riparian buffers have been proven to reduce nutrient and sediment transport to streams in agricultural watersheds. Southern Illinois offers a unique opportunity to study functions of riparian buffers in reclaimed mine soils. In Perry County, Illinois three stream segments of Bonnie Creek, Galum Creek and Pipestone Creek were restored to their approximate original position following mining. Between 1980 and 2000, as part of the restoration, vegetative buffers of grasses and trees were planted along the streams to minimize nutrient and sediment inputs from adjacent restored agricultural land.

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39

López, Picazo Mirella. "3D subject-specific shape and density modeling of the lumbar spine from 2D DXA images for osteoporosis assessment." Doctoral thesis, Universitat Pompeu Fabra, 2019. http://hdl.handle.net/10803/666513.

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Osteoporosis is the most common bone disease, with a significant morbidity and mortality caused by the increase of bone fragility and susceptibility to fracture. Dual Energy X-ray Absorptiometry (DXA) is the gold standard technique for osteoporosis and fracture risk evaluation at the spine. However, the standard analysis of DXA images only provides 2D measurements and does not differentiate between bone compartments; neither specifically assess bone density in the vertebral body, which is where most of the osteoporotic fractures occur. Quantitative Computed Tomography (QCT) is an alternative t

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Jefferson, Lara Vanessa. "The biology and ecology of species of Maireana and Enchylaena: intra- and inter-specific competition in plant communities in the eastern goldfields of Western Australia." Thesis, Curtin University, 2001. http://hdl.handle.net/20.500.11937/2361.

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Members of the family Chenopodiaceae are routinely used as colonizer plant species to rehabilitate waste and tailings materials on mine sites in the Eastern Goldfields of Western Australia. These are specifically selected for their salt and drought tolerance and also because they are representative of the surrounding natural vegetation. Where these have been sown, competition between several species has been observed. The resulting plant community structure is typically lower in species diversity than the initial seed mixture. This study aimed to determine whether competition was occurring bet

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41

Ekström, Lisa. "Intervention for the Specific : An Architectural Dialogue With the Historical City of Visby." Thesis, KTH, Arkitektur, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223548.

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How can contemporary architecture approach an extremely specific and historical context?Grounded in the site and its history, this question is investigated through theprocess of adding a literary theatre and housing in the city centre of Visby, Gotland.

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42

Almeida, Cinara Xavier de [UNESP]. "Qualidade física de um latossolo vermelho sob sistema de semeadura direta e cultivo convencional." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/105136.

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Made available in DSpace on 2014-06-11T19:33:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-12-21Bitstream added on 2014-06-13T19:04:48Z : No. of bitstreams: 1 almeida_cx_dr_jabo.pdf: 641425 bytes, checksum: 8ee6de028f930932e687bf840fa7cec8 (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>O estudo de indicadores de qualidade dos solos é fundamental para avaliar o nível de degradação imposta pelo uso agrícola e para estabelecer estratégias de manejo sustentáveis. O objetivo geral deste

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43

Mutsuura, Keita, Hirotaka Shimizu, Yasunobu Yokomizu, and Toshiro Matsumura. "Flux flow resistance in Bi2223 generated by pulse currents." IEEE, 2005. http://hdl.handle.net/2237/6789.

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44

Drake, Arly Marie. "The Effect of Cultural Practices on the Surface Firmness of Putting Greens." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1398957202.

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45

Hickman, Amanda N. "THE EFFECTS OF INOCULUM SIZE, AIRFLOW RATE, BULK DENSITY AND PARTICLE SIZE ON THE SCALE-UP OF PHANEROCHAETE CHRYSOSPORIUM PRETREATMENT." UKnowledge, 2015. http://uknowledge.uky.edu/bae_etds/29.

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The following full-factorial study compared fungal activity on lignocellulosic biomass that was inoculated with three different amounts of fungus, and grown using three different airflow rates. These treatments were compared to a control which consisted of biomass that was not inoculated but was exposed to the same growth conditions in the environmental chamber. The objectives of the following experiment were to determine the inoculum density and airflow rate required to optimize Phanerochaete chrysosporium lignin degradation. Additionally, this study quantifies the saccharification yield from

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46

Makarynska, Dina. "Theoretical and numerical modelling of the effect of viscous and viscoelastic fluids on elastic properties of saturated rocks." Thesis, Curtin University, 2010. http://hdl.handle.net/20.500.11937/289.

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Rock physics is an essential link connecting seismic data to the properties of rocks and fluids in the subsurface. One of the most fundamental questions of rock physics is how to model the effects of pore fluids on rock velocity and density. Contemporary scientific computing allows geophysicists to conduct extremely complex virtual (computational) experiments on realistic digital representations of complex porous media, and thus directly relate the measurable properties of the media to their microstructure and saturation. Computational (digital) rock physics can also serve as an effective tool

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Murasaki, Seiichi. "Sex-Specific Patterns of Movement and Space Use in the Strawberry Poison Frog, Oophaga pumilio." FIU Digital Commons, 2010. http://digitalcommons.fiu.edu/etd/226.

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The home range encompasses an animal’s movements as it goes about its normal activity, and several home range estimators have been developed. I evaluated the performance of the Minimum Convex Polygon, Bivariate Normal, and several kernel home range estimators in a geographical information system environment using simulations and a large database of O. pumilio mark-recapture locations. A fixed 90% kernel estimator using Least-Square Cross-Validation (to select the bandwidth) outperformed other methods of estimating home range size and was effective with relatively few capture points. Home range

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Tse, Tek Lun Jason. "Toward patient-specific dosimetry in digital breast tomosynthesis." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29880.

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Breast dosimetry is crucial in assessing the radiation risk for X-ray-based breast imaging including full-field digital mammography (FFDM) and digital breast tomosynthesis (DBT). While the breast dose from each FFDM or DBT image is known to be small, the repeated imaging from cancer screening is likely to result in a measurable excess risk for developing radiation-induced breast cancer in the women’s lifetime. For FFDM and DBT, breast dose is measured as the mean absorbed dose to the fibro-glandular tissues, known as the mean glandular dose (MGD). MGD is estimated with a computation phantom

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Raymond, Fred Douglas. "Reducing Corn Yield Variability and Enhancing Yield Increases Through the Use of Corn-Specific Growth Models." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/36304.

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Crop simulation models (CSMs) are used to evaluate management and environmental scenarios on crop growth and yields. Two corn (Zea Mays L.) crop growth simulation models, Hybrid-Maize, and CERES-Maize were calibrated and validated under Virginia conditions with the goal of better understanding corn response to variable environmental conditions and decreasing temporal yield variation. Calibration data were generated from small plot studies conducted at five site-years. Main plots were plant density (4.9, 6.2, 7.4, and 8.6 plants m-2); subplots were hybrids of differing relative maturity (RM)

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Malcioglu, Osman Baris. "Tailoring One Dimensional Novel Nano Structures For Specific Applications Using Tools Of Molecular Modeling." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609422/index.pdf.

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In this work, the use of theoretical tools of molecular modeling for tailoring 1D novel nanomaterials is demonstrated. There are four selected nano-structures as examples, each tailored for a specic demand of nano-technology that is yet to be fullled. For the purpose of modeling/calculating the electronic and structural properties, various methods of dening the interatomic interaction, such as empirical potential energy functions, semi-empirical methods and density functional theory, are used. Each of these methods have a dierent level of approximations leading to limitations in their use. Fur

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