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Dissertations / Theses on the topic 'Pressure and Tension in the Contact Surface'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Rapolu, Prakash. "Capillarity Effect on Two-phase Flow Resistance in Microchannels." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204082574.

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2

Yildirim, Ismail. "Surface Free Energy Characterization of Powders." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/27525.

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Microcalorimetric measurements and contact angle measurements were conducted to study the surface chemistry of powdered minerals. The contact angle measurements were conducted on both flat and powdered talc samples, and the results were used to determine the surface free energy components using Van Oss-Chaudhury-Good (OCG) equation. It was found that the surface hydrophobicity of talc increases with decreasing particle size. At the same time, both the Lifshitz-van der Waals (gSLW) and the Lewis acid-base (gSAB) components (and, hence, the total surface free energy (gS)) decrease with decrea

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3

Koran, Karen M. "Surface interactions of surface washing agents an examination of detergency, interfacial tension and contact angle /." Cincinnati, Ohio : University of Cincinnati, 2007. http://www.ohiolink.edu/etd/view.cgi?ucin1186105489.

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4

KORAN, KAREN M. "SURFACE INTERACTIONS OF SURFACE WASHING AGENTS: AN EXAMINATION OF DETERGENCY, INTERFACIAL TENSION AND CONTACT ANGLE." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1186105489.

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5

Larson, Hans Christian. "Replacement Rates of Initially Hydrocarbon-Filled Microscopic Cavities with Water." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7496.

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Wetting behaviors influence many aspects of life and industry from consumer product goods to oil recovery to cosmetics. While the traditional solid-liquid-vapor (SLV) system has been studied for many years now, wetting transitions in the solid-liquid-liquid (SLL) system has remained relatively unexplored. The purpose of this work is to bring light to the wetting transition of the solid-liquid-liquid system and to understand the replacement rates of initially hydrocarbon-filled microscopic cavities with water and the factors affecting these rates. Factors studied were viscosity, density, diffus

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6

Adler, Jeanette. "Film Formation and Surface Tension Studies of Powder Coatings." Thesis, KTH, Fibre and Polymer Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3935.

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<p>In industrial use of paint systems a swift processing is crucial. Another very important issue is to improve the quality of the final coating. This report investigates the film formation process of powder coatings, specially the spreading of individual powder particles. The obtained results can be used to understand and control the film formation process. In this way the desired levelling can be achieved and thus the desired gloss or other surface characteristics that may be required. This means that the method could be used when evaluating different polymer and additive combinations that c

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7

Sun, Jinxia. "Characterization of Organosilicone Surfactants and Their Effects on Sulfonylurea Herbicide Activity." Diss., Virginia Tech, 1996. http://hdl.handle.net/10919/30343.

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This research focused on the characterization of organosilicone surfactants and their effects on sulfonylurea herbicide activity. The project included efficacy tests, rainfastness studies in the greenhouse, radiotracer studies on herbicide uptake, fluorescent dye studies on surface deposition, and various measurements of physico-chemical properties. In measuring physico-chemical properties, a logistic dose response relationship was found between adjuvant concentration and contact angle on parafilm. An AsymSigR relationship existed between adjuvant concentration and surface tension for all the

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8

Rashid, Asim. "MINIMIZING CONTACT STRESSES IN AN ELASTIC RING BY RESPONSE SURFACE OPTIMIZATION." Thesis, Högskolan i Jönköping, Tekniska Högskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-13023.

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9

Kim, Seong Jin. "Fluid Dynamics in Liquid Entry and Exit." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/88757.

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Interaction between a solid body and a liquid-air interface plays an important role in multiphase flows, which includes numerous engineering applications such as mineral flotation, dip coating operations, and air-to-sea and sea-to-air projectiles. It is also crucial in animal behaviors like the locomotion of water-walking animals, the plunge-diving of birds, and the jumping out of water of marine creatures. Depending on the moving direction of a solid, such diverse phenomena can be classified into two categories; liquid-entry and liquid-exit. Liquid-entry, or more widely called water-entry, is

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10

Dugáček, Ján. "Automatizované optické měření kontaktního úhlu kapky." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377330.

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Measurement of surface tension of solids usually requires manual processing of photographs of droplets of liquids with known properties on the measured material's surface, during which the contact angle is manually determined. The objective of this work is to implement an algorithm that can determine these contact angles from photographs and does not require the photographs to be made under specific light conditions. The implementation cannot depend on paid libraries and must be simple to incorporate into existing software.

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11

Stevens, Ben. "Short-time structural stability of compressible vortex sheets with surface tension." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:378713da-cd05-4b9a-856d-bee2b0fb47ce.

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The main purpose of this work is to prove short-time structural stability of compressible vortex sheets with surface tension. The main result can be summarised as follows. Assume we start with an initial vortex-sheet configuration which consists of two inviscid fluids with density bounded below flowing smoothly past each other, where a strictly positive fixed coefficient of surface tension produces a surface tension force across the common interface, balanced by the pressure jump. We assume the fluids are modelled by the compressible Euler equations in three space dimensions with a very genera

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12

Long, Garrett Earle. "Comparative Surface Tension Predictions via Grand Canonical Transition Matrix Monte Carlo Simulation." Miami University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami1533206970884063.

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13

Persson, Marcus. "Surfactants at non-polar surfaces." Doctoral thesis, KTH, Chemistry, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3444.

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<p>The aim of this thesis work was to investigate theadsorption of surfactants to different nonpolar interfaces.Particularly, the effects of the polar group and the nature ofthe hydrophobic interface were elucidated. The interfacialbehavior of the liquid-vapor interface was investigated bymeans of surface tension measurements. Here the effect of thepolar group and the hydrocarbon chain length was investigatedin a systematic manner. It was found that the shorter of thetwo chains examined, decyl, generated a larger surface pressurecontribution than the longer, dodecyl. Furthermore, the sugarbase

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14

Lesage, Anne-Cécile. "Méthodes Level Set pour les écoulements bi-fluides incompressibles avec tension de surface et angle de contact sur maillages non-structurés." Nice, 2006. http://www.theses.fr/2006NICE4047.

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15

Moore, Stan G. "Chemical Potential Perturbation: A Method to Predict Chemical Potential Using Molecular Simulations." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3248.

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A new method, called chemical potential perturbation (CPP), has been developed to predict the chemical potential as a function of composition in molecular simulations. The CPP method applies a spatially varying external potential to the simulation, causing the composition to depend upon position in the simulation cell. Following equilibration, the homogeneous chemical potential as a function of composition can be determined relative to some reference state after correcting for the effects of the inhomogeneity of the system. The CPP method allows one to predict chemical potential for a wide ran

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16

Bukiet, Frédéric. "Influence de la modification de l'hypochlorite de sodium par adjonction de tensioactifs sur l'énergie interfaciale et la viscosité dynamique de la solution d'irrigation." Thesis, Montpellier 1, 2014. http://www.theses.fr/2014MON12201/document.

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La complexité anatomique de l'endodonte implique un protocole d'irrigation efficace. L'hypochlorite de sodium doit donc pouvoir pénétrer dans l'ensemble du réseau endodontique afin d'exercer son activité antiseptique et protéolytique. Dans cet objectif, l'utilisation d'un tensioactif mélangé à l'hypochlorite de sodium constitue une approche potentiellement intéressante pour optimiser la pénétration et l'étalement de l'hypochlorite de sodium au sein du système canalaire. Cette thèse sur publications a donc pour objectif d'étudier l'influence de la modification de l'hypochlorite de sodium par ad

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17

Manoharan, Sanjivan. "Bubble Growth from Submerged Orifices: Investigating the Influence of Surface Wettability, Liquid Properties, and Design Conditions." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1479819854513389.

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18

Almoughni, Hend Mohammed Aa. "Capillary flow of liquid water through plain knitted fabrics." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/capillary-flow-of-liquid-water-through-plain-knitted-fabrics(4cd71022-212f-4536-8a5f-532fcd0883d0).html.

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In extreme weather conditions and activity levels of human subjects evaporation of sweat is critical for maintaining the sensorial and thermal comfort. Fabrics, from which clothes worn next to the skin are made, play an important role in facilitating the transfer of body liquid perspiration away from the skin to the environment through the mechanisms of capillary flow and evaporation. This work is a theoretical and experimental investigation of water flow characteristics of plain knitted fabrics with relevance to their structure geometry and constituent fibre chemistry. Plain knitted fabrics w

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19

Atefi, Ehsan. "Aqueous Biphasic 3D Cell Culture Micro-Technology." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1443112692.

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20

Oliveira, Maria Luísa Bambozzi de. "FREEFLOW-AXI: um ambiente de simulação de escoamentos axissimétricos com superfícies livres." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-29112002-164102/.

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Este trabalho apresenta um ambiente de simulação de escoamentos com simetria radial e superfícies livres, baseado no sistema Freeflow. O sistema é formado por três módulos: um modelador de moldes, um simulador e um visualizador de escoamentos. O simulador implementa o método GENSMAC para a solução das equações de Navier-Stokes em coordenadas cilíndricas, utilizando diferenças finitas em uma malha diferenciada. São introduzidos os efeitos da tensão superficial e do ângulo de contato nas simulações com simetria radial. Alguns resultados de simulações utilizando este sistema e uma validação d

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21

Delannoy, Joachim. "Les surprises de la montée capillaire." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS484.

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La montée capillaire est l'une des illustrations les plus remarquables des effets de la tension superficielle. L'expérience consiste à placer un tube de petit diamètre au contact d'un liquide mouillant. Le liquide monte alors spontanément à l'intérieur du tube jusqu'à une hauteur qui peut atteindre plusieurs centimètres. En partant de cette expérience historique, nous extrayons des phénomènes nouveaux : (1) la dissipation au niveau de la ligne de contact, à l'origine d'une vitesse de montée constante à temps court, (2) la descente capillaire dans des milieux aérophiles qui donne lieu à de nouv

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22

Iost, Cristina Abi Rached [UNESP]. "Efeito de adjuvantes nas propriedades físico-químicas da água e na redução de deriva em pulverizações sobre diferentes espécies de plantas daninhas." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/97153.

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Made available in DSpace on 2014-06-11T19:28:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-02-11Bitstream added on 2014-06-13T19:58:11Z : No. of bitstreams: 1 iost_car_me_botfca.pdf: 1768880 bytes, checksum: 15165f8112f914fcc04feae599644f1d (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Este trabalho teve como objetivo avaliar o efeito de adjuvantes sobre algumas propriedades de soluções aquosas, como tamanho de gotas, tensão superficial dinâmica e ângulo de contato das gotas em diferentes superfícies, natural e artificial, bem como avaliar o efe

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23

Katakam, Hruday chand. "Fabrication and Characterization of Polycarbonate Polyurethane (PCPU) Nanofibers Impregnated with Nanofillers." Scholar Commons, 2015. https://scholarcommons.usf.edu/etd/5525.

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Polycarbonate polyurethane (PCPU) has been studied as a novel polymer impregnated with nanoparticles for improved mechanical, thermal and adhesion properties [4]. This study investigates the synthesis of polycarbonate polyurethane (PCPU) polymeric nanofiber membranes by the process of electrospinning. This study further examines all the parameters associated with electrospinning a novel PCPU polymeric solution impregnated with nanofillers, such as nanoparticles, to produce fiber membranes. Tetrahydrofuran (THF) and N, N dimethylformamide (DMF) are used as solvents to dissolve PCPU polymer. One

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24

Bahrami, Majid. "Modeling of Thermal Joint Resistance for Sphere-Flat Contacts in a Vacuum." Thesis, University of Waterloo, 2004. http://hdl.handle.net/10012/876.

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As a result of manufacturing processes, real surfaces have roughness and surface curvature. The real contact occurs only over microscopic contacts, which are typically only a few percent of the apparent contact area. Because of the surface curvature of contacting bodies, the macrocontact area is formed, the area where microcontacts are distributed randomly. The heat flow must pass through the macrocontact and then microcontacts to transfer from one body to another. This phenomenon leads to a relatively high temperature drop across the interface. Thermal contact resistance (TCR) is a

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25

Melo, Adriano Arrué. "INFLUÊNCIA DE ADJUVANTES NAS PROPRIEDADES FÍSICO-QUÍMICAS DA CALDA DE INSETICIDAS, NA FORMAÇÃO DE DEPÓSITOS, PENETRAÇÃO CUTICULAR E REMOÇÃO PELA CHUVA." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/3630.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The addition of adjuvants can improve the quality of agricultural chemical sprays and have been an usual practice on the last years. The work presents two papers aiming to study the influence of adjuvant apply on the agricultural spray. The first article, entitled "Influence of adjuvants on the physicochemical characteristics of insecticides spray solution and electron microscope images of the deposits on wheat and corn leaves" evaluate changes in physical and chemical characteristics of the spray solution with the insecticides Thi

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26

Santos, Renata Thaysa da Silva [UNESP]. "Relação do espalhamento de caldas fitossanitárias em superfícies de folhas com o controle de plantas daninhas." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151664.

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Submitted by RENATA THAYSA DA SILVA SANTOS null (renata_sol_2@hotmail.com) on 2017-09-19T19:23:31Z No. of bitstreams: 1 Dissertação pronta.pdf: 1297727 bytes, checksum: 9562b8aaaa9a30d19ffbb80afb4d3495 (MD5)<br>Approved for entry into archive by Monique Sasaki (sayumi_sasaki@hotmail.com) on 2017-09-20T17:21:48Z (GMT) No. of bitstreams: 1 santos_rts_me_bot.pdf: 1297727 bytes, checksum: 9562b8aaaa9a30d19ffbb80afb4d3495 (MD5)<br>Made available in DSpace on 2017-09-20T17:21:48Z (GMT). No. of bitstreams: 1 santos_rts_me_bot.pdf: 1297727 bytes, checksum: 9562b8aaaa9a30d19ffbb80afb4d3495 (MD5)

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Patil, Amit. "Inflation and Instabilities of Hyperelastic Membranes." Doctoral thesis, KTH, Mekanik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187041.

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The applications of membranes are increasing rapidly in various fields of engineering and science. The geometric, material, force and contact non-linearities complicate their analysis, which increases the demand for computationally efficient methods and interpretation of counter-intuitive behaviours. The first part of the present work studies the free and constrained inflation of circular and cylindrical membranes. The membranes are assumed to be in contact with a soft substrate, modelled as a linear spring distribution.Adhesive and frictionless contact conditions are considered during inflati

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28

Hessling, Oscar. "Influence of Oxygen Partial Pressure on the Droplet Shape of Stainless Steel Using Levitated Droplet Method." Thesis, KTH, Materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199668.

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An induction setup for levitation studies of molten metals was built. The setup was used to levitate and heat stainless steel samples of 2.00 g to 1600 °C and subject them to different atmospheres. Changes in shape and temperature were recorded by video and infrared thermocouple. Oxide films forming on the droplets during levitation were observed. It was possible to notice an immediate surface reaction when the reaction gas was introduced. This reaction is concluded to influence the surface and bulk composition, and therefore have an effect on the shape evolution of the droplet. A more oxidizi

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29

Iost, Cristina Abi Rached 1982. "Efeito de adjuvantes nas propriedades físico-químicas da água e na redução de deriva em pulverizações sobre diferentes espécies de plantas daninhas /." Botucatu : [s.d. ], 2008. http://hdl.handle.net/11449/97153.

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Orientador: Carlos Gilberto Raetano<br>Banca: Ulisses Rocha Antuniassi<br>Banca: Cristina Gonçalves de Mendonça<br>Resumo: Este trabalho teve como objetivo avaliar o efeito de adjuvantes sobre algumas propriedades de soluções aquosas, como tamanho de gotas, tensão superficial dinâmica e ângulo de contato das gotas em diferentes superfícies, natural e artificial, bem como avaliar o efeito desses produtos sobre a deposição e a deriva utilizando como alvo três espécies de plantas daninhas (Euphorbia heterophylla, Ipomoea grandifolia e Brachiaria plantaginea). Seis formulações de adjuvantes (Antid

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30

Enaim, Mohammed. "Etude de la co-forgeabilité d'u multi-matériau : application à un coupe d'acier." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0002/document.

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Le forgeage multi-matériaux est un procédé permettant la mise en forme et l’assemblage simultanés de matériaux différents. Ce procédé permet d’obtenir des pièces multi-matériaux avec le « bon matériau placé au bon endroit ». L’objectif des travaux de thèse est de définir les conditions nécessaires à l’établissement de la liaison métallurgique par forgeage à l’interface d’un couple d’aciers. Dans un premier temps, l’état de l’art a servi à l’identification les phénomènes physiques accompagnant le forgeage multi-matériaux et les paramètres clés pilotant l’établissement de la liaison métallurgiqu

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31

Folle, Luís Fernando. "Estudo do coeficiente de atrito para processos de estampagem." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/76155.

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O atrito na interface entre a peça e a ferramenta tem considerável importância em operações de estampagem de chapas, são necessários conhecimentos precisos sobre processos de conformação de chapas para a análise e projeto de novas peças e ferramentas, assim como para validação de uma simulação numérica. Este trabalho usa o método de determinação do coeficiente de atrito em estampagem através do ensaio de dobramento sob tensão e avalia sua precisão com o uso do software de elementos finitos LS-DYNAFORM, específico para esse processo de fabricação. Como existem seis equações que calculam o coefi

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32

Chen, Qing-Li. "Effect of surface topography on hip prosthesis anchorage." Thesis, Queensland University of Technology, 1997.

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33

Chevalier, Loïc. "Prise en compte des effets capillaires dans la modélisation par Éléments Finis et level-set de l'imprégnation dans les milieux fibreux." Thesis, Lyon, 2019. https://tel.archives-ouvertes.fr/tel-02864784.

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La prise en compte des effets liés à la tension superficielle est d’une importance majeure dans l’élaboration de composites par procédés LCM où ils influencent l’imprégnation de la résine liquide dans les préformes fibreuses, et donc la santé matière finale. Dans ce travail, une méthode numérique capable de traiter un modèle général bi-fluide intégrant des actions capillaires est développée et mise en œuvre. La méthode repose d’abord sur le calcul précis de la force de tension superficielle. Considérant une transformation mathématique du travail virtuel de la tension superficielle, la contrain

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Chen, Xiaodong. "Fluid-Structure Interaction Modeling of Epithelial Cell Deformation during Microbubble Flows in Compliant Airways." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1332208862.

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Råvik, Mattias. "Infuence of Escherichia coli feedstock properties on the performance of primary protein purification." Licentiate thesis, KTH, School of Biotechnology (BIO), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3941.

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<p>Abstract</p><p>The aim of the present study was to increase the understanding of how the cell surface properties affect the performance of unit operations used in primary protein purification. In particular, the purpose was to develop, set up and apply methods for studies of cell surface properties and cell interactions.</p><p>A method for microbial cell surface fingerprinting using surface plasmon resonance (SPR) is suggested. Four different <em>Escherichia coli </em>strains were used as model cells. Cell surface fingerprints were generated by registration of the interaction between the ce

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Råvik, Mattias. "Influence of Escherichia coli feedstock properties on the performance of primary protein purification." Licentiate thesis, KTH, Bioprocessteknik, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3941.

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Abstract The aim of the present study was to increase the understanding of how the cell surface properties affect the performance of unit operations used in primary protein purification. In particular, the purpose was to develop, set up and apply methods for studies of cell surface properties and cell interactions. A method for microbial cell surface fingerprinting using surface plasmon resonance (SPR) is suggested. Four different Escherichia coli strains were used as model cells. Cell surface fingerprints were generated by registration of the interaction between the cells and four different s

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Raiyan, Asif. "Fundamentals of Liquid Interactions with Nano/Micro Engineered Surfaces at Low Temperatures." University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo154471832751114.

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Keller, Scott Wayne. "Determination of the Leak Size Critical to Package Sterility Maintenance." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/26690.

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This study was divided into four sections: the literature review; the mechanism by which a package defect becomes a leak; and the imposed pressures generated within a package during distribution; comparison of the threshold leak size to the critical leak size and their effect on loss of package sterility; and the relationships between microorganism characterisitics and the threshold leak size, and their effect on the critical leak size. Section II. The mechanism by which a package defect converts to a leaker in an effort to develop a relationship between the threshold leak size and loss of pac

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Marques, Aline Maria Manrique. "Influencia da adesão particula-suspensão durante o processo de recobrimento em leito de jorro com atomização na base." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267376.

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Orientador: Sandra Cristina dos Santos Rocha<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-09T14:53:14Z (GMT). No. of bitstreams: 1 Marques_AlineMariaManrique_M.pdf: 2697128 bytes, checksum: 791a079eecd6ec0abc7c5950687642df (MD5) Previous issue date: 2007<br>Resumo: O objetivo de estudo deste trabalho consistiu na análise do recobrimento de partículas em leito de jorro com atomização na base do equipamento. Estudou-se o comportamento fluidodinâmico, as propriedades de adesão entre partícula-suspensão, o c

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Montefuscolo, Felipe. "Métodos numéricos para escoamentos com linhas de contato dinâmicas." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-24042013-150545/.

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O fenômeno de molhamento, estudo de como um líquido se deposita em um sólido, apresenta problemas ainda em aberto, dos pontos de vista da modelagem física e da simulação numérica. O maior interesse acadêmico neste tipo de escoamento é a linha tríplice (ou linha de contato) formada da interação sólido-líquido-gás. A condição de contorno clássica de não escorregamento na interface líquido-sólido leva a uma singularidade no tensor de tensões nesta linha. Além disso, ainda não está estabelecido qual o melhor modelo para descrever o ângulo de contato formado entre a superfície livre e o substrato (

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Veverka, Miroslav. "Příprava a charakterizace SA vrstev z vinyltriethoxysilanu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216229.

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Development of composite material is very much progressive sector and leads to evolution of material with new property. This type of material has one, but important deficiency. It is small adhesion armature to matrix. My study is sight on improvement adhesion the surface by deposition self assembled (SA) monolayer from organosilanes. Property of this layer, like thickness, surface tension, homogenity and wettability, was evaluated by the contact angle measurement and spektroscopical elipsometri.

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Real, Hernandez Luis M. "Preparation of Non-Surface-Active Solutions from Bovine Milk and Dairy-Based Beverages to Improve Langmuir Trough Model Systems of Dairy Fluids." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1534510214734083.

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Ellouze, Maroua. "Les propriétés émulsifiantes du lait de chamelle et de ses fractions protéiques : étude physico-chimique et biochimique." Thesis, Université Clermont Auvergne‎ (2017-2020), 2019. http://www.theses.fr/2019CLFAC052.

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Les propriétés émulsifiantes et interfaciales des protéines du lait de chamelle ont été étudiées seules, en mélange ou dans leur environnement naturel (dans le lactosérum sérum, sous forme de caséinates ou directement dans le lait de chamelle). L’impact de certaines conditions physico-chimiques a été étudié, notamment l’impact du pH, du traitements thermiques, de la concentration et de l’homogénéisation hautes pressions, afin de comprendre le rôle de chacune des dénaturations appliquées et leur impact sur les propriétés émulsifiantes. Cette étude a été réalisée en parallèle sur le lait de vach

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Wallin, Harald. "An investigation of friction graphs ranking ability regarding the galling phenomenon in dry SOFS contact : (Adhesive material transfere and friction)." Thesis, Karlstad University, Faculty of Technology and Science, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-2790.

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<p>The main purpose of this project is to investigate different tool steels in terms of their ability to withstand material transfer buildup, so-called galling, occurring in SMF (sheet metal forming) operations. The ability to withstand galling is vital to optimize cost-effectiveness and increase the work tool’s effective operational time. This investigation studies four different tool steels, including a TiN-coating, with the intention of evaluating the microstructures, chemical composition and hardness effect on galling resistance in dry conditions using a slider-on-flatsurface (SOFS) tribo-

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Кучірка, Ю. М. "Удосконалені методи підвищення точності результатів дослідження поверхневого натягу рідин та пристрій для їх реалізації". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2013. http://elar.nung.edu.ua/handle/123456789/4629.

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Дисертація присвячена дослідженню і розробленню удосконалених методів для дослідження ПН рідин та розчинів ПАР на межі контакту рідина - газ. Проаналізовано відомі методи і прилади для вимірювання ПН рідин і розчинів ПАР за максимальним тиском у бульбашці, внаслідок чого визначено їхні недоліки. Представлено удосконалені методи, що враховують несферичність меніска у момент максимального тиску у бульбашці, і не потребують попереднього визначення густини рідини та прецизійної системи занурення капілярів на певну глибину цієї рідини, а також пристрій з їх реалізації, який дозволяє автоматизовано

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Geneviève, Mike. "Assemblage Dirigé d’Objets à Partir de Solutions Colloïdales." Toulouse, INSA, 2009. http://eprint.insa-toulouse.fr/archive/00000287/.

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L'intégration de nano-objets dans des systèmes fonctionnels à l'échelle nanométrique est un sérieux challenge à relever pour les applications qui exploitent leurs propriétés uniques. Ces objets peuvent être de natures diverses et variées, des nano-particules, des protéines, des molécules. De nombreuses problématiques visent à assembler sous forme 2D ou 3D ces nano-objets en suspension dans un liquide sur des surfaces solides. Leur intégration depuis cette phase liquide sur une surface solide, demeure une opération sensible. Une attention toute particulière est alors mise sur l'assemblage de bi

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Seppecher, Pierre. "Les fluides de Cahn-Hilliard." Habilitation à diriger des recherches, Université du Sud Toulon Var, 1996. http://tel.archives-ouvertes.fr/tel-00522242.

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Abrahão, Ricardo Tadeu. "Study on the dispersion of titanium dioxide pigment particles in water." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-29072013-120251/.

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Pigmentary titanium dioxide (TiO2) is the most important white pigment used in several industries, including those that manufacture plastic, coatings and paper. To achieve maximum efficiency in light scattering and to deliver the required opacity to the medium in which the TiO2 is present, the TiO2 particles must be fully dispersed throughout this medium. The particle dispersion in a cured, dry, or solid medium depends on the dispersion efficiency in the wet state, which depends on the effectiveness of the deagglomeration process. Based on the existing technical knowledge, the objective of thi

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Asmatulu, Ramazan. "Advanced Chemical-Mechanical Dewatering of Fine Particles." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/26604.

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In the present work, novel dewatering aids and a novel centrifuge configuration were developed and applied for the purpose of dewatering fine particles. Three different types dewatering reagents were tested in different filtration and centrifugation units. These chemicals included low-HLB surfactants, naturally occurring lipids, and modified lipids. Most of these reagents are insoluble in water; therefore, they were used in solutions of appropriate solvents, such as light hydrocarbon oils and short-chain alcohols. The role of these reagents was to increase the hydrophobicity of the coal and

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Stewart, Martin. "The Mechanics of Mitotic Cell Rounding." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-90006.

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During mitosis, adherent animal cells undergo a drastic shape change, from essentially flat to round, in a process known as mitotic cell rounding (MCR). The aim of this thesis was to critically examine the physical and biological basis of MCR. The experimental part of this thesis employed a combined optical microscope-atomic force microscope (AFM) setup in conjunction with flat tipless cantilevers to analyze cell mechanics, shape and volume. To this end, two AFM assays were developed: the constant force assay (CFA), which applies constant force to cells and measures the resultant height, and t

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