Log in

Relevant bibliographies by topics / Conductivity distribution / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Conductivity distribution.

Dissertations / Theses on the topic 'Conductivity distribution'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Conductivity distribution.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Dekdouk, Bachir. "Image reconstruction of low conductivity material distribution using magnetic induction tomography." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/image-reconstruction-of-low-conductivity-material-distribution-using-magnetic-induction-tomography(44d6769d-59b1-44c2-a01e-835f8916f69c).html.

Full text

Abstract:

Magnetic induction tomography (MIT) is a non-invasive, soft field imaging modality that has the potential to map the electrical conductivity (σ) distribution inside an object under investigation. In MIT, a number of exciter and receiver coils are distributed around the periphery of the object. A primary magnetic field is emitted by each exciter, and interacts with the object. This induces eddy currents in the object, which in turn create a secondary field. This latter is coupled to the receiver coils and voltages are induced. An image reconstruction algorithm is then used to infer the conducti

APA, Harvard, Vancouver, ISO, and other styles

2

Belyaeva, A. I., A. A. Galuza, P. A. Khaimovich та ін. "Effect of the grain size on the precipitate distribution of the dispersion-strengthened СuСrZr alloy". Thesis, Національний науковий центр "Харківський фізико-технічний інститут", 2014. http://repository.kpi.kharkov.ua/handle/KhPI-Press/48167.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Yurtkolesi, Mustafa. "Imaging Electrical Conductivity Distribution Of The Human Head Using Evoked Fields And Potentials." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609828/index.pdf.

Full text

Abstract:

In the human brain, electrical activities are created due to the body functions. These electrical activities create potentials and magnetic fields which can be monitored elec- trically (Electroencephalography - EEG) or magnetically (Magnetoencephalography - MEG). Electrical activities in human brain are usually modeled by electrical dipoles. The purpose of Electro-magnetic source imaging (EMSI) is to determine the position, orientation and strength of dipoles. The first stage of EMSI is to model the human head numerically. In this study, The Finite Element Method (FEM) is chosen to han- dle an

APA, Harvard, Vancouver, ISO, and other styles

4

Shorafa, Mahdi. "The effect of sodicity on the hydraulic conductivity of undisturbed and repacked cores of soils." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343220.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Schrama, Judith Marije. "High-frequency magneto-conductivity studies of low-dimensional organic conductors." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365779.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Luffman, Ingrid Elizabeth. "The effect of spatial statistics of hydraulic conductivity and distribution coefficient fields on solute transport." Thesis, University of Ottawa (Canada), 1997. http://hdl.handle.net/10393/4458.

Full text

Abstract:

The purpose of this research is twofold. First, a tool is developed to assist in the reproduction of field correlation scenarios for input into a flow and transport simulator. Second, this tool is used to generate random fields with several different velocity/retardation relationships typical of the Canada Forces Base Borden aquifer in order to determine the effect of this relationship on the retardation and dispersive processes, specifically on the macrodispersivity. The second section of the research investigates the effect of different types of spatial statistics on the behaviour of a conta

APA, Harvard, Vancouver, ISO, and other styles

7

Luffman, Ingrid E. "The effect of spatial statistics of hydraulic conductivity and distribution coefficient fields on solute transport." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq22003.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Alam, Mahmood. "Development of vacuum insulation panel with low cost core material." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/11658.

Full text

Abstract:

Buildings consume around half of the UK's total energy consumption and are responsible for almost 50% of UK's total carbon dioxide (CO2) emissions. Use of high thermal resistance insulation in buildings is critical to save the substantial amounts of space heating energy lost through building fabric. Conventional building insulation materials have higher thermal conductivity values ranging from 40 mWm-1K-1 (Glass fibre) - 26 mWm-1K-1 (Polyurethane foam) and require larger thicknesses to achieve stringent building regulation requirements which may not be feasible due to techno-economic constrain

APA, Harvard, Vancouver, ISO, and other styles

9

Johnston, Martin David. "Current and field distribution in high temperature superconductors." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298870.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Cai, Jing-sen, E.-chuan Yan, Tian-chyi Jim Yeh, and Yuan-yuan Zha. "Effects of heterogeneity distribution on hillslope stability during rainfalls." EDITORIAL BOARD WATER SCIENCE & ENGINEERING, 2016. http://hdl.handle.net/10150/622924.

Full text

Abstract:

The objective of this study was to investigate the spatial relationship between the most likely distribution of saturated hydraulic conductivity (K-s) and the observed pressure head (P) distribution within a hillslope. The cross-correlation analysis method was used to investigate the effects of the variance of lnK(s), spatial structure anisotropy of lnK(s), and vertical infiltration flux (q) on P at some selected locations within the hillslope. The cross-correlation analysis shows that, in the unsaturated region with a uniform flux boundary, the dominant correlation between P and Ks is negativ

APA, Harvard, Vancouver, ISO, and other styles

11

Lawson, Sydney A. "A Comparative Study to Calculate Hydraulic Conductivity in Ultisols on an East Tennessee Hillslope." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/honors/420.

Full text

Abstract:

This study compares four different methods to measure hydraulic conductivity (K) at two sites on the East Tennessee State University Valleybrook Campus. It compares the K values to each other, to the different K values between the two sites, and to United States Department of Agriculture (USDA) K values. Two field methods, Well Bail Test and Auger Hole Test, and two lab methods, Constant Head Permeameter Test and Grain Size Distribution Test (GSD), were performed on the clay rich Ultisol soils on an East Tennessee hillslope in the Valley and Ridge Physiographic Province. One site was located c

APA, Harvard, Vancouver, ISO, and other styles

12

Xu, Teng. "Ensemble Kalman filtering for hydraulic conductivity characterization: Parallelization and non-Gaussianity." Doctoral thesis, Universitat Politècnica de València, 2014. http://hdl.handle.net/10251/43769.

Full text

Abstract:

The ensemble Kalman filter (EnKF) is nowadays recognized as an excellent inverse method for hydraulic conductivity characterization using transient piezometric head data. and it is proved that the EnKF is computationally efficient and capable of handling large fields compared to other inverse methods. However, it is needed a large ensemble size (Chen and Zhang, 2006) to get a high quality estimation, which means a lots of computation time. Parallel computing is an efficient alterative method to reduce the commutation time. Besides, although the EnKF is good accounting for the non linearities o

APA, Harvard, Vancouver, ISO, and other styles

13

Hartl, Kevin M. "Facies distribution and hydraulic conductivity of lagoonal sediments in a Holocene transgressive barrier island sequence, Indian River Lagoon, Florida." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0014406.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Bokun, G. S., Ya G. Groda, R. N. Lasovsky, and V. S. Vikhrenko. "Charge Distribution Around Nanoscale Nonhomogeneities in Solid State Ionics." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42717.

Full text

Abstract:

The system of Nernst-Planck-Poisson equations is modified by including the gradient terms in the chemical potential expression. The gradient terms are important in the regions of significant inhomogeneities, e. g. near the interface boundaries. These modified equations are used for investigating the particle density distribution in the vicinity of interphase boundary of a solid electrolyte. The differential equation of the fourth order for the problem of contact between two solid phases is formulated. Its analytic solution which describes non monotonic distribution of charge in both phases is

APA, Harvard, Vancouver, ISO, and other styles

15

McEwen, Amiana Marie. "Abundance, Distribution, and Geometry of Naturally Occurring Macropores in Stream Banks." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/95948.

Full text

Abstract:

Preferential flow paths are areas of substantially higher permeability than surrounding media. Macropores and soil pipes are a type of preferential flow path where conduit-like voids in the subsurface are typically greater than three millimeters in diameter. They are known to occur in agricultural and forest soils, often as a result of biological and physical processes. Macropores also exist in stream banks and have the potential to enhance the exchange of water and solutes between the channel and riparian groundwater, yet the geographic distribution of bank macropores is unknown. Here we dete

APA, Harvard, Vancouver, ISO, and other styles

16

Kattekola, Rajiv. "Numerical Analysis of Thermal Characteristics of a Tablet Computer and its Internal Components." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378113727.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Raed, Khaled. "Investigation of Knudsen and gas‐atmosphere effects on effective thermal conductivity of porous media." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2013. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-117386.

Full text

Abstract:

Die vorliegende Arbeit befasst sich mit Untersuchung der gekoppelten Einflüsse ‎von Gasart, Porengröße und Porengrößenverteilung auf die effektive ‎Wärmeleitfähigkeit nicht-durchströmter poröser Materialien (Dämmstoffe). Diese ‎Zusammenhänge sind bisher nur ansatzweise bekannt und für eine spätere ‎praktische Anwendung von zunehmend großer Bedeutung. Um dies zu erreichen ‎wurden 12 verschiedene hoch poröse Materialien (Porosität höher als 70 %) ‎ausgewählt, die unterschiedlichen Porengrößenverteilungen im Makro- Mikro- und ‎Nanobereich haben. Die effektive Wärmeleitfähigkeit wurde hauptsachlic

APA, Harvard, Vancouver, ISO, and other styles

18

Dikinya, Oagile. "The effects of self-filtration on saturated hydraulic conductivity in sodic sandy soils." University of Western Australia. School of Earth and Geographical Sciences, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0051.

Full text

Abstract:

[Truncated abstract] Self-filtration is here defined as particle detachment and re-deposition causing re-arrangement of the particles and therefore pore space which affects water flow in soil by decreasing hydraulic conductivity. This is of particular important in soils which are susceptible to structural breakdown. The objective of this thesis was to examine the dynamics of the self-filtration process in sodic sandy soils as affected by ionic strength and soil solution composition. The temporal changes of hydraulic conductivity and the elution of fine particles from soil columns were used as

APA, Harvard, Vancouver, ISO, and other styles

19

Meynard, Joane. "Influence de la taille, de la morphologie et de la distribution spatiale des pores sur la conductivité thermique de céramiques UO2." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0607.

Full text

Abstract:

Dans un réacteur nucléaire, le comportement des combustibles est piloté par des phénomènes thermiques. C'est pourquoi il est important de modéliser précisément leur comportement thermique.L’objectif de ces travaux est d’évaluer l’impact de la microstructure sur les propriétés thermiques d’un combustible UO2 à 50°C.Des céramiques UO2 ont été fabriquées. Deux familles de porosité ont été identifiées à l’aide de différentes techniques d’imagerie (microscopie optique, MEB-FIB et tomographie X) : la porosité occluse de forme quasi-sphérique et localisée dans les granulats d’UO2 et un réseau de poro

APA, Harvard, Vancouver, ISO, and other styles

20

Russell, Edward Morgan. "The combined effects of fertilization and relative water limitation on tissue water relations, hydraulic parameters and shallow root distribution in loblolly pine (Pinus taeda L.)." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/102387.

Full text

Abstract:

One goal of this research was to characterize shoot tissue-level responses in loblolly pine to soil moisture limitation in combination with fertilization as well as to more severe soil moisture limitation. We found that neither fertilization alone, nor fertilization in combination with soil moisture limitation resulted in changes to shoot tissue water relations parameters classically characterized in drought response studies. More severe water limitation was necessary to elicit responses, and those responses had not been fully described previously. The more severe water limitation resulted in

APA, Harvard, Vancouver, ISO, and other styles

21

Shitara, Kazuki. "Bi2O3およびその固溶体における酸化物イオン伝導". 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199307.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

設樂, 一希. "Bi2O3およびその固溶体における酸化物イオン伝導". Kyoto University, 2015. http://hdl.handle.net/2433/199516.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Sarang, Sanjay S. "OHMIC heating for thermal processing of low-acid foods containing solid particulates." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1197669208.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Blahut, Dominik. "Srovnání výsledků vsakovaní vody z polních experimentů a numerického modelování." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265730.

Full text

Abstract:

The aim of this thesis is to compare the results of water infiltration from field tests, from laboratories and from numerical modeling at two selected locations. The first objective is the search procedure and the description of both sites and its adjacent areas. Further work continues with infiltration field tests using ring infiltrometer, at first theoretically for each method, and then practically with own personal measurements in the field. Further from the collected soil samples the measurements are performed in the laboratory, first in the permeameter, and followed by the grain size dist

APA, Harvard, Vancouver, ISO, and other styles

25

Kubrak, Volker. "Transport of two-dimensional electrons through magnetic barriers." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364636.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Ibeiro, Lidiane da Silva. "Estudo da distribuição dimensional de poros e da condutividade hidráulica de solos arenosos compactados tratados com cal e cimento." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/153307.

Full text

Abstract:

A técnica de estabilização de solos através da incorporação de agentes cimentantes é uma opção eficaz e amplamente utilizada em obras de engenharia geotécnica. Portanto, são relevantes os estudos que contemplam aspectos ainda não bem compreendidos relativos aos efeitos causados pela adição de agentes cimentantes na porosidade dos materiais obtidos e, por consequência, nas propriedades de desempenho destas misturas. Neste sentido, o presente trabalho pretende contribuir no que tange ao conhecimento da estrutura de poros de solos compactados tratados com cal e cimento e sua relação com o comport

APA, Harvard, Vancouver, ISO, and other styles

27

Wardman, John Blackburn. "Vulnerability of Electric Power Systems to Volcanic Ashfall Hazards." Thesis, University of Canterbury. Geological Sciences, 2013. http://hdl.handle.net/10092/8014.

Full text

Abstract:

Volcanic eruptions are powerful natural events which impact strongly on society. As human populations grow and expand into volcanically active areas, their exposure and vulnerability to volcanic hazards is also increasing. Of all volcanic hazards, ashfall is the most likely to impact lifelines because of the large areas affected. The widespread dispersal of ash can cause large-scale disruption of vital infrastructure services, aviation, and primary production. Electric power supply is arguably the most crucial of modern infrastructure systems, especially considering the dependence of other sec

APA, Harvard, Vancouver, ISO, and other styles

28

Streck, Carlos Arnoldo. "Índice e fluxo de água e ar em solos do sul do Brasil." Universidade Federal de Santa Maria, 2007. http://repositorio.ufsm.br/handle/1/3307.

Full text

Abstract:

Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Soil structure is defined by form and arrangement of soil particles and pores. As a consequence of time increase of no-tillage use the soil structure has been modified by repetition of traffic caused by agricultural operations throughout years, which, in turn, has been identified as compaction implying in lost of soil quality. In this study, the S index sensibility was tested as related to other soil physical properties and was evaluated also the alterations of pore diameters and its implications on saturated hydraulic conductivi

APA, Harvard, Vancouver, ISO, and other styles

29

Elmefors, Elin. "Fosforavskiljning och hydraulisk konduktivitet i markbaserade reningssystem – Kornstorleksfördelningens betydelse." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-154184.

Full text

Abstract:

Fosforutsläpp kan leda till övergödning i vattenrecipienten om kritiska nivåer överskrids. De enskilda avloppen står idag för en relativt stor andel av Sveriges fosforutsläpp jämfört med de kommunala avloppen. Detta kan sättas i bakgrund av att staten, alltsedan 1970-talet, har lagt ner stora resurser på att reducera utsläppen hos kommunala avlopp, medan en motsvarande satsning på de enskilda avloppen uteblivit. Merparten av dagens enskilda avlopp utgörs av markbaserade reningssystem, det vill säga avloppslösningar där avloppsvattnet får passera genom markmaterial för att renas. Fosforreningen

APA, Harvard, Vancouver, ISO, and other styles

30

Staponkus, Robertas. "Nėgių vingilių (Petromizontidae) paplitimas ir būklė Lietuvos upėse." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2010~D_20140625_202826-99049.

Full text

Abstract:

Trijų Lietuvoje sutinkamų nėgių: mažosios nėgės (Lampetra planeri), upinės nėgės (Lampetra fluviatilis) ir jūrinės nėgės (Petromyzon marinus) vingilių pasiskirstymo ir tankumo tyrimai buvo vykdyti Vakarų ir Rytų Lietuvos upėse, į kurias nėgės dažniausiai migruoja neršti. Tyrimai buvo atlikti Minijos, Danės–Akmenos, Merkio, Žeimenos ir Šventosios upės baseinuose (pabaseiniuose) 2007 09 13 d. – 2010 04 11 d. Nėgės buvo tirtos 67 iš anksto pasirinktose stotyse. Kadangi nėgių vingiliai yra bentosiniai gyvūnai, tad jų kiekio įvertinimas mėginyje buvo atliekamas hidrobiologiniu metodu: individų skai

APA, Harvard, Vancouver, ISO, and other styles

31

Taylor, Linda Lea. "Storage of Pine Tree Substrate Influences Plant Growth, Nitrification, and Substrate Properties." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/40342.

Full text

Abstract:

Pine tree substrate (PTS) is a relatively new substrate for container crop production. There are no detailed studies that elucidate how storage time impacts PTS chemical, physical, and biological aspects. The objective of this research was to determine how PTS storage time influenced PTS chemical and physical properties, nitrification, and plant growth. Pine tree substrate was manufactured by hammer-milling chips of loblolly pine trees (Pinus taeda L.) through two screen sizes, 4.76 mm (PTS) and 15.9 mm amended with peat (PTSP). PTS and PTSP were amended with lime at five rates. A peat-pe

APA, Harvard, Vancouver, ISO, and other styles

32

Ortigara, Cícero. "Propriedades físicas e hídricas de um latossolo em diferentes Sistemas de cultivo de longa duração." Universidade Federal de Santa Maria, 2017. http://repositorio.ufsm.br/handle/1/11554.

Full text

Abstract:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The intensive use of agricultural soils caused a significant degradation of its chemical, physical, biological and microbiological structure. Aiming to maintain or promote improvements in soil quality, several techniques were developed, including the no-tillage system. The objective of this study was to evaluate the effect of rotation plans and tillage system on physical and hydraulic properties of a Rhodic Eutrudox in grain yield and development of soybean. The study was carried out in a long-lived experiment, impleme

APA, Harvard, Vancouver, ISO, and other styles

33

Crestani, Elena. "Tracer Test Data Assimilation for the Assessment of Local Hydraulic Properties in Heterogeneous Aquifers." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3426637.

Full text

Abstract:

The hydraulic conductivity distribution in a natural porous media is characterized by a great heterogeneity that makes its spatial assessment problematic and expensive. At the same time, a detailed knowledge of the hydraulic properties, as porosity, storativity, transmissivity and hydraulic conductivity K, is fundamental for the prediction of groundwater flow and solute transport in natural formations. Among the hydraulic properties, being the subsurface transport phenomena in natural formations mainly controlled by the Darcy's law, the proper definition of the K spatial distribution at differ

APA, Harvard, Vancouver, ISO, and other styles

34

Eastman, Christopher Mark. "Soil Physical Characteristics of an Aeric Ochraqualf amended with Biochar." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1316548127.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Aka, Gérard. "Alumino-gallates de sodium-lanthanide de type alumine beta, magnetoplombite ou mixte : cristallochimie, etude spectroscopique et proprietes physiques." Paris 6, 1988. http://www.theses.fr/1988PA066008.

Full text

Abstract:

Obtention des composes a structure mixte par echange ionique en sel fondu d'ions lanthanides trivalents sur les cristaux d'aluminogallate de sodium, na::(1+y)(al::(1-x)ga::(x))::(11) o::(17+(y/2)), obtenus par la methode du fondant, avec 0,5y1 et 0x0,5. Caracterisation par des mesures de susceptibilite magnetique et conductivite electrique. Analyse des spectres rpe pour localiser les ions lanthanides dans les structures de type alumine beta ou mixte, pour lesquelles les etudes d'absorption optique, de fluorescence et de declin de fluorescence indiquent des proprietes optiques differentes des i

APA, Harvard, Vancouver, ISO, and other styles

36

Ghanbarian-Alavijeh, Behzad. "Modeling Physical and Hydraulic Properties of Disordered Porous Media: Applications from Percolation Theory and Fractal Geometry." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401380554.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Keller, Niels. "Étude angulaire du deuxième champ critique dans les supraconducteurs à fermions lourds UPt3, URu2Si2 et CeCu2Si2." Université Joseph Fourier (Grenoble ; 1971-2015), 1994. http://www.theses.fr/1994GRE10119.

Full text

Abstract:

Cette these est consacree a l'etude experimentale du deuxieme champ critique des supraconducteurs a fermions lourds upt#3, uru#2si#2 et cecu#2si#2. La supraconductivite de ces composes, qui est presumee de nature non conventionnelle, est supposee influencer fortement la dependance angulaire du deuxieme champ critique h#c#2 dans le plan basal du compose hexagonal upt#3 et des composes tetragonaux uru#2si#2 et cecu#2si#2. Ainsi, la mesure de la variation angulaire de h#c#2 peut aider a distinguer le type de parametre d'ordre supraconducteur. La variation angulaire de h#c#2 dans le plan basal et

APA, Harvard, Vancouver, ISO, and other styles

38

Qasrawi, Radwan. "Treatment planning methods for clinical electroporation." Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/441753.

Full text

Abstract:

Two treatment modalities based on the electroporation phenomenon, electro-chemotherapy and irreversible electroporation, have been developed in the last decades to destroy solid tumors. These treatments are based on the delivery of short high voltage pulses across electrodes and their success depends on covering the whole tumor with an adequate electric field magnitude. This leads to a need for software tools capable of allowing patient-specific treatment planning. In particular, there is a need for treatment planning tools similar to those used in radiotherapy in order to plan the location of

APA, Harvard, Vancouver, ISO, and other styles

39

Suchá, Kateřina. "Hodnocení kvality/zdraví půdy v blízkosti obce Bohaté Málkovice." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392022.

Full text

Abstract:

Diploma thesis evaluates quality and healthiness of the soil health located close to Bohate Malkovice focusing on changes in both physical and chemical characteristics of the soil in time. The theoretical part describes physical, chemical, and biological parameters of the soil. Selected physical parameters are structure, texture, determination of measured weight, bulk density of the soil, porosity, actual volumetric water content of the soil, aeration, saturated and unsaturated hydraulic conductivity, infiltration, and colour. Chosen chemical parameters are pH, carbonates, soil electrical cond

APA, Harvard, Vancouver, ISO, and other styles

40

Fang, Chen Yihui. "Modélisation thermique des moteurs asynchrones en vue de la réalisation d'un outil CAO." Rouen, 1994. http://www.theses.fr/1994ROUE5077.

Full text

Abstract:

Une modélisation thermique d'un moteur asynchrone fermé est effectuée dans la présente étude à l'aide d'un logiciel de calcul en éléments finis appelé Systus. Le modèle conçu en 3D représente une configuration assez complexe du moteur. Le coefficient d'échange dans les enceintes du moteur est un paramètre non accessible comme il est reconnu dans la littérature scientifique. De ce fait, un modèle de mélange parfait de l'écoulement dans les enceintes est avancé afin d'identifier le coefficient d'échange. Ce traitement est original et efficace. Grâce à la performance du logiciel Systus, les condu

APA, Harvard, Vancouver, ISO, and other styles

41

Коваленко, Владислав Вячеславович. "Дослідження режимів мереж 35/10кВ операторів системи розподілу електроенергії". Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2020. https://ela.kpi.ua/handle/123456789/39563.

Full text

Abstract:

В бакалаврській роботі на тему «Дослідження режимів мереж 35/10кВ операторів системи розподілу електроенергії » виділяються дві частини: перша – розрахункова (розділ1), де реалізуються загальні електроенергетичні задачі розрахунку та оптимізації режимів і визначення струмів короткого замикання для достатньо складних електричних мереж та друга – дослідницька (розділ 2), що присвячена аналізу режимів схем 35/10кВ Одесаобленерго. Об`єктом дослідження є індивідуальна підстанція 110/35/10кВ, постачальна та розподільчі мережі 10/35кВ, та характерні проблемно-оріентовані експерементальні або промисл

APA, Harvard, Vancouver, ISO, and other styles

42

Debacq, Marie. "Étude et modélisation des fours tournants de défluoration et réduction du difluorure d'uranyle." Phd thesis, Institut National Polytechnique de Lorraine - INPL, 2001. http://tel.archives-ouvertes.fr/tel-00974273.

Full text

Abstract:

Ce travail porte sur l'étude et la modélisation des fours tournants de défluoration et réduction du difluorure d'uranyle. Le premier chapitre traite de l'étude dynamique du mouvement de la charge solide dans les fours. Une méthode a été mise au point pour déterminer la répartition moyenne de la poudre dans une section transversale de four, basée sur des considérations géométriques et sur des mesures expérimentales de loi de déchargement des releveurs et de vitesse de chute des essaims de poudre. Des mesures de Distribution des Temps de Séjour ont permis de déterminer le temps de séjour moyen e

APA, Harvard, Vancouver, ISO, and other styles

43

Hung, Hsiung-Chun, and 洪雄春. "Correlation of Sm distribution and corresponding conductivity for Sm-doped ceria." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/55266537949057411719.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>材料科學與工程系<br>102<br>Samarium-doped ceria is one of the potential candidates for the application of solid oxide fuel cells due to the high oxygen ionic conductivity. Various techniques (e.g., solid state, sol-gel, and spray pyrolysis) have been reported on samarium-doped ceria, however the optimum dosages of samarium are still not clear, it means that there are different distributions of samarium in ceria. In this work, particles of samarium-doped ceria were synthesized from various precursors (cerium acetate, ammonium cerium nitrate, samarium acetate and samarium nitrate) usin

APA, Harvard, Vancouver, ISO, and other styles

44

Chen, Ke-Chiang, and 陳克強. "Effect of Gravel Content and Distribution on Soil Saturated Hydraulic Conductivity." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/81177532567568610905.

Full text

Abstract:

碩士<br>國立中興大學<br>水土保持學系所<br>97<br>Due to geological characteristic and high rainfall, soil erosion is generally quite serious in Taiwan. The fine soil particles were eroded easily and the gravel content in soil increased gradually. Natural disaster may change soil structure. It will affect the water movement in the soil and modify soil saturated hydraulic conductivity. Red soil sample with six treatments, namely, 0%, 5%, 15%, 30%, 45%, and 60% of gravel in soil column and delaminated the soil to three levels with the same steps, then packed it to measure soil saturated hydraulic conductivity b

APA, Harvard, Vancouver, ISO, and other styles

45

Chang, Hsing-Hsiang, and 張湘杰. "A study of Data Generation in Saturated Hydraulic conductivity with Spatial Distribution." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/26256862965407205316.

Full text

Abstract:

碩士<br>國立雲林科技大學<br>環境與安全工程系碩士班<br>89<br>The primary goal of this research is to apply Monte Carlo method and Spectrum theory into the data generation simulating formula in order to produce a featured heterogenous saturated hydraulic conductivity in spatial distribution, and then further statistically analyzes its results to verify the accuracy of the formula in this research. In the 2 and 3-dimensional experiments, we discovered that the correlation function, which we got from the random variable of, becomes gradually closer to the exponential decay correlation function once the loss

APA, Harvard, Vancouver, ISO, and other styles

46

Wang, Ya-wei, and 王雅薇. "Thermo/hydro coupling effects on temperature distribution and hydraulic conductivity of buffer material." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/xg9u9w.

Full text

Abstract:

碩士<br>國立中央大學<br>土木工程研究所<br>96<br>A repository for high-level radioactive wastes would be constructed in the bedrock at the depth of several hundred meters below ground surface. The interaction of the thermal and hydration fronts will produce transient states in the barrier in which thermal flow, water movement will be coupled. A compacted bentonite block is submitted to simultaneous heating and hydration, and has been designed with the aim of simulating the heat/water flow interaction in the barrier. The transmission electronic microscope (TEM) was used in observing the microstructure of the b

APA, Harvard, Vancouver, ISO, and other styles

47

Tzeng, Jian-Hou, and 曾建豪. "The distribution of pore water pressure in soft rock slope with hydraulic conductivity anisotropy." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/70603203899518534427.

Full text

Abstract:

碩士<br>國立中央大學<br>應用地質研究所<br>92<br>Poorly cemented and stratified sandstone, mudstone and shale are the main formations in the hill distributed in northern and central regions of western Taiwan. Slope failures following by heavy rainstorm are common in these areas. For this reason, the research aims to study the effect of hydraulic-conductivity anisotropy on pore water pressure (PWP) distributed in these soft rock slopes through numerical simulation. In this study, a commercial finite difference code FLAC is adopted to simulate the seepage of a anisotropic soft rock slope. The PWP distribution o

APA, Harvard, Vancouver, ISO, and other styles

48

Tsai, Yi-Zhih, and 蔡義誌. "Studies of Relationships between Unsaturated Soil Hydraulic Conductivity and Pore Size Distribution of Media." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/50356891806110181225.

Full text

Abstract:

博士<br>國立中興大學<br>水土保持學系所<br>96<br>There is inseparable relation between moisture movement in soil and pore size distribution of porous media. Therefore, this study developed two one-dimensional vertical flow hydraulic conductivity functions which are based on Arya and Kosugi model. The functions were developed by applying pore radius to present the influence of pore radius (r) on unsaturated hydraulic conductivity (K). (公式略) Where K(θi) is the hydraulic conductivity (L T-1) corresponding with water content θi (L3 L-3); ΔΨm is matric potentials (L); Δz is depth (L); rj is the mean pore radius (L

APA, Harvard, Vancouver, ISO, and other styles

49

"Characterization of the gas and liquid transport rates and H2SO4 concentration and distribution within an above ground, commercial scale sulphur block." Thesis, 2013. http://hdl.handle.net/10388/ETD-2013-07-1122.

Full text

Abstract:

Excess global elemental sulphur (So) production has resulted in a decrease in its price. As a result, many companies, such as Syncrude Canada Ltd., have resorted to above ground storage alternatives. Geochemical reactions in these above ground blocks produce elevated concentrations of H2SO4 (acid). This acid can have potentially deleterious effects on the environment. As such, these blocks will require long-term (500 years) monitoring and maintenance. Presently the So is removed from the product stream, piped in a molten state, and poured over a low permeability liner in thin lifts. As

APA, Harvard, Vancouver, ISO, and other styles

50

Rosas, Aguilar Jorge. "Analysis of Grain Size Distribution and Hydraulic Conductivity for a Variety of Sediment Types with Application to Wadi Sediments." Thesis, 2013. http://hdl.handle.net/10754/288525.

Full text

Abstract:

Grain size distribution, porosity, and hydraulic conductivity from over 400 unlithified sediment samples were analized. The measured hydraulic conductivity values were then compared to values calculated using 20 different empirical equations commonly used to estimate hydraulic conductivity from grain size analyses. It was found that most of the hydraulic conductivity values estimated from the empirical equations correlated very poorly to the measured hydraulic conductivity values. Modifications of the empirical equations, including changes to special coefficients and statistical off sets, were

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!