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Dissertations / Theses on the topic 'Hydrogel method'

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1

Yata, Tomoya. "Development of efficient amplification method of DNA hydrogel and composite-type DNA hydrogel for photothermal immunotherapy." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/215494.

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Jajarmi, P., S. Barzegar, G. R. Ebrahimi, and N. Varahram. "Production of Sn02 nano-particles by hydrogel thermal decomposition method." Thesis, Sumy State University, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20684.

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SnO2 is an important functional material having a wide range of applications in gas sensors and optoelectronic devices. There is a great interest for finding new costeffective and straight-forward methods for production of these particles. In this research, hydrogel thermal decomposition method (HTDM) is used for production of high purity SnO2nano-particles. Cost effective reactants and green routs of production are the advantages of polysaccharide based hydrogel as starting material for this method. Visual observations indicated that there is very little tendency for agglomeration in th
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Sveinsson, Hrafn Mar. "Constrained Hydrogel swelling in Biological Sensors : A Finite Element Method Approach." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19103.

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Material models has been developed for anionic and/or cationic hydrogels, with a simulation framework implemented in MATLAB and the finite element software ABAQUS. The geometry of the simulations is a hemispheroidal hydrogel, divided into a core with a shell, covalently attached to an optical fiber. The material models have been used to estimate the chemical parameters of poly-acrylamide hydrogels containing anionic or cationic monomer groups. Simulations comparing free and constrained swelling has been conducted in order to determine the effect of the geometrical constriction to the optical f
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Ehrenhofer, Adrian, Alice Mieting, Sascha Pfeil, et al. "An automatically rainproofing bike helmet through light-sensitive hydrogel meshes: Design, modeling and experiments." SPIE, 2020. https://tud.qucosa.de/id/qucosa%3A74218.

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For everyday cycling, one needs to carry rainproof clothing just for the case of unexpected downpours. In the present research, we present a concept for a helmet which is automatically rainproof when the rain starts. When the sun comes out, the helmet is breathable again even before it completely dries up. This functionality is provided by active hydrogel meshes. Hydrogel meshes offer great advantages due to their ability to change the aperture size with swelling and deswelling. In our current work, we present the design and modeling steps for hydrogel-layered active meshes which use (i) swell
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Haigh, Jodie N. "Melt electrospinning writing as a method to form novel hydrogel architectures and constructs." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/103849/1/Jodie_Haigh_Thesis.pdf.

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The addition of three-dimensional structure in hydrogels, and the first reported instance of melt electrospinning writing (MEW) of polypropylene, provides a foundation for the production of complex hydrogel systems for a variety of applications. This project provides a novel, facile and universal method to produce porous structures in soft hydrogels, using sacrificial templates produced via MEW. While the optimization of the MEW of polypropylene was completed elucidating methods to enable the production of MEW scaffolds with high melting point polymers.
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Sobczyk, Martin, and Thomas Wallmersperger. "Modeling and simulation of a chemically stimulated hydrogel bilayer bending actuator." SPIE, 2017. https://tud.qucosa.de/id/qucosa%3A34887.

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Stimuli-sensitive hydrogels are polymeric materials, which are able to reversibly swell in water in response to evironmental changes. Relevant stimuli include variations of pH, temperature, concentration of specific ions etc. Stacked layers composed of multiple thin hydrogels - also referred to as hydrogel-layer composites - combine the distinct sensing properties of different hydrogels. This approach enables the development of sophisticated micro uidic devices such as bisensitive valves or uid-sensitive de ectors. In order to numerically simulate the swelling of a polyelectrolyte hydrogel in
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7

Salahshoor, Pirsoltan Hossein. "Nanoscale structure and mechanical properties of a Soft Material." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-theses/924.

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"Recently, hydrogel have found to be promising biomaterials since their porous structure and hydrophilicity enables them to absorb a large amount of water. In this study the role of water on the mechanical properties of hydrogel are studied using ab-initio molecular dynamics (MD) and coarse-grained simulations. Condensed-Phased Optimized Molecular Potential (COMPASS) and MARTINI force fields are used in the all-atom atomistic models and coarse-grained simulations, respectively. The crosslinking process is modeled using a novel approach by cyclic NPT and NVT simulations starting from a high tem
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8

Sobczyk, Martin, and Thomas Wallmersperger. "Modeling and simulation of the electro-chemical behavior of chemically stimulated polyelectrolyte hydrogel layer composites." Sage, 2016. https://tud.qucosa.de/id/qucosa%3A35624.

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Polyelectrolyte hydrogels are viscoelastic electroactive polymers which respond to external physical or chemical stimuli by a reversible volume phase transition. Novel fabrication methods allow the creation of hydrogel layer composites in which each layer shows a different sensitivity (e.g. to a different stimulus). This offers new opportunities, for example, in the design of new microsensors, microactuators and microfluidic devices as well as for high-selective membranes and target-specific drug delivery systems. Since only few research groups numerically investigated the transport mechanisms
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9

Zhao, Xiaofei. "Harvesting Microalgae-Development of a Short Residence Time Method Using Rapid-response Temperature-sensitive Semi-IPN Hydrogels." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1434501731.

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10

McMaster, Rebecca J. "A simple method towards 3D-printing and crosslinking partially hydrolysed poly(2-ethyl-2-oxazoline)." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/109910/1/Rebecca_McMaster_Thesis.pdf.

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The two projects covered by this thesis represent advancements in the field of biofabrication. The first project was a proof-of-principle study focused on the development of a new polymer ink for 3D-printing. Scaffold structures were printed with a hydrophilic polymer and characterized to determine optimum printing parameters. Crosslinking strategies to create hydrogels with properties similar to human tissue were also explored. The second project was focused towards developing adipose grafts for soft tissue defects. Microfibre scaffolds were designed and 3D-printed with pores suitably sized f
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11

Boston, Bridget A. "Human Adipose-Derived Micro-vessel Constructs: a potential method for experimental bone regeneration." Thesis, Griffith University, 2021. http://hdl.handle.net/10072/410910.

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Bisphosphonates are a group of drugs widely used in medical practice to prevent bone destruction, occurring in diseases like osteoporosis and bone cancer. An unfortunate sideeffect of these potent drugs is the subsequent death of areas of bone in the jaw following minor local trauma, commonly occurring during dental treatment. This unique, but welldocumented, adverse effect is termed medication-related osteonecrosis of the jaws (MRONJ). While the precise cause of MRONJ is still unclear, research suggests the inhibition of new blood vessel formation, limiting the capacity for bone healing, may
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12

Leichsenring, Peter, and Thomas Wallmersperger. "Modeling and simulation of transport phenomena in ionic gels." SPIE, 2015. https://tud.qucosa.de/id/qucosa%3A35028.

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Ionic hydrogels belong to the class of polyelectrolyte gels or ionic gels. Their ability to swell or shrink under different environmental conditions such as change of pH, ion concentration or temperature make them promising materials, e.g. for microsensoric or microactuatoric devices. The hydrogel swelling exhibits nonlinear effects due to the occurrence of different interacting transport phenomena. Numerical simulations are an essential part in the ongoing development of microsensors and microactuators. In order to determine transport effects due to diffusion, migration and convection a multi
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Ehrenhofer, Adrian, and Thomas Wallmersperger. "Hydrogels for engineering." SPIE, 2017. https://tud.qucosa.de/id/qucosa%3A34890.

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In engineering, materials are chosen from databases: Engineers orient on specific parameters such as Young's modulus, yield stress or thermal expansion coefficients for a desired application. For hydrogels, the choice of materials is rather tedious since no generalized material parameters are currently available to quantify the swelling behavior. The normalization of swelling, which we present in the current work, allows an easy comparison of different hydrogel materials. Thus, for a specific application like a sensor or an actuator, an adequate material can be chosen. In the current work, we
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14

Cisloiu, Roxana. "Computational modeling of hydrogen embrittlement of iron aluminides." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1910.

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Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains vii, 93 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 71-75).
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15

Carr, James M. "Low energy positron scattering from the hydrogen molecular ion." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363939.

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16

Johansson, Ilsa. "Hydrogen fluoride method development for the Ogawa Passive Sampling Device." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001399.

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17

Resnick, Richard J. (Richard Jay) 1971. "The economics of biological methods of hydrogen production." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17885.

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Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 2004.<br>Includes bibliographical references (p. 98-108).<br>The costs to produce and utilize hydrogen are extremely high per unit of energy when compared to fossil fuel energy sources such as natural gas or gasoline. The cheapest hydrogen production approaches today are also the most polluting, as they use fossil fuels in even more inefficient ways than cars do. Renewable approaches to hydrogen production are- at best- three times more expensive per unit energy than the co
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18

Kumar, Sushant. "Clean Hydrogen Production and Carbon dioxide Capture Methods." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/1039.

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Fossil fuels constitute a significant fraction of the world’s energy demand. The burning of fossil fuels emits huge amounts of carbon dioxide into the atmosphere. Therefore, the limited availability of fossil fuel resources and the environmental impact of their use require a change to alternative energy sources or carriers (such as hydrogen) in the foreseeable future. The development of methods to mitigate carbon dioxide emission into the atmosphere is equally important. Hence, extensive research has been carried out on the development of cost-effective technologies for carbon dioxide capture
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19

Woods, Denton. "Variational Calculations of Positronium Scattering with Hydrogen." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822803/.

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Positronium-hydrogen (Ps-H) scattering is of interest, as it is a fundamental four-body Coulomb problem. We have investigated low-energy Ps-H scattering below the Ps(n=2) excitation threshold using the Kohn variational method and variants of the method with a trial wavefunction that includes highly correlated Hylleraas-type short-range terms. We give an elegant formalism that combines all Kohn-type variational methods into a single form. Along with this, we have also developed a general formalism for Kohn-type matrix elements that allows us to evaluate arbitrary partial waves with a single cod
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20

Brown, Jared R. "Analytical Methods Development for High-Throughput Photochemisty With Led Arrays." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/32709.

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This thesis describes the design, construction, and evaluation of a series of LED array photolysis systems for high throughput photochemistry. Three generations of array systems of increasing sophistication are evaluated using calorimetric measurements and potassium tris(oxalato)ferrate(III) chemical actinometry. The results are analyzed using descriptive statistics and analysis of variance (ANOVA). The LEDs in the third generation array were shown to be statistically equivalent, with respect to light output, according to physical and chemical actinometry experiments. The third generation
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21

Ritz, P. "An appraisal of the doubly labelled water method for energy expenditure measurements." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319821.

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22

Hossain, Md Fokhray. "Computer methods for investigating hydrogen-bonded equilibria in alcohols." Thesis, University of South Wales, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266715.

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23

Chen, Michael Vincent. "An Electrolytic Method for Tartrate Stabilization in Chardonnay Wine." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1600.

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Tartrate stabilization is the process that removes components that contribute to the crystallization of potassium hydrogen tartrate (KHT) and calcium tartrate (CaT) which is an undesirable outcome for wine quality. There are a variety of current tartrate stabilization techniques such as cold stabilization, chemical additives, ion exchange resins, and electrodialysis that stabilize wine, but the most popular being cold stabilization. Cold stabilization requires high amounts of energy and resources to stabilize wine. With the ever increasing demand for more efficient processing, an alternative t
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24

Pershouse, David A. "Effect of decellularisation methods on methacryloyl-substituted placental ECM hydrogels." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/201712/1/David_Pershouse_Thesis.pdf.

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Biomedical research uses hydrogels for cell culture to closely mimic cellular environments and produce more accurate results than traditional methods. Here, human placenta, a tissue rich in bio-signalling molecules, is used as a base material to create a novel type of hydrogel that can be cured by exposure to visible light (Placental-Methacryloyl; PlacMA). Effects of different preparation methods are explored while mechanical, chemical and biological properties of PlacMA are investigated. PlacMA was found to be highly tuneable and suitable for a variety of cell culture and tissue engineering a
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25

NAKANO, MILTON S. "Previsao Tecnologica a medio e longo prazo sobre os processos de geracao de hidrogenio, considerando cenarios futuros probabilisticos que levem em conta o desenvolvimento das pilhas a combustivel." reponame:Repositório Institucional do IPEN, 2009. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11520.

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Made available in DSpace on 2014-10-09T12:52:48Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:02:37Z (GMT). No. of bitstreams: 0<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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26

Rérat, Michel. "Methode invariante de jauge pour le calcul de proprietes magnetiques : applications a de petites molecules." Paris 6, 1987. http://www.theses.fr/1987PA066024.

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Developpement d'une technique de calcul des proprietes magnetiques qui combine les avantages des methodes classiques tenant compte de la correlation electronique et qui conserve l'invariance de jauge de la methode des polynomes par un systeme de compensation interne. Calcul des corrections rovibroniques, decrites analytiquement par la methode des perturbation, pour des molecules diatomiques (h::(2), co) pour une comparaison des resultats theoriques et experimentaux
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27

au, A. Blackett@murdoch edu, and Anthony John Blackett. "Solving momentum-space coupled-channels equations for electron-atom scattering using a rotated-contour method." Murdoch University, 2002. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20080114.140142.

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In the last twenty years, electron-atom scattering theory has witnessed significant theoretical developments. One of these advances is the use of the momentum-space convergent closecoupling approach to fully incorporate target atom continua. This theoretical framework is based on the momentum-space Lippmann-Schwinger equation, an integral form of the Schrodinger equation. Although the approach has been highly successful in its application to atomic scattering theory, computing numerical solutions is inherently difficult because the momentum-space LS equation is a singular integral equation. St
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28

Stegeby, Henrik. "Four-Body Treatment of the Hydrogen-Antihydrogen System." Licentiate thesis, Uppsala universitet, Institutionen för kemi - Ångström, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-174015.

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This thesis presents a nonadiabatic (4-body) description of the hydrogen-antihydrogen system at a nonrelativistic level. The properties of the system, the rearrangement processes and the possible existence of resonance states are investigated by using a variational method for coupled arrangement channels, the Gaussian Expansion Method, and the stabilization method. The 4-body basis set is optimized by means of prediagonalization of 2-body fragments. In paper I, a mass-scaling procedure of the Born-Oppenheimer potential is introduced for the description of the relative motion between hydrogen a
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29

Lam, James. "Hydrogen diffusion in concentrated metal hydrides." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301906.

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30

Hudkins, Jesse. "Methods for reducing the capital costs of electrolyzers for hydrogen generation." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58904.

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Amorphous phases of metal oxide thin films are of interest to the Berlinguette group because they mediate the oxygen evolution reaction more efficiently than crystalline phases of the same compositions. One goal of this thesis is to develop a technique to implement amorphous metal oxide thin films in a membrane electrode assembly (MEA) by depositing these highly active thin films on solid polymer electrolyte membranes. Chapter 2 outlines the implementation of amorphous iridium oxide (a-IrOx) into a catalyst-coated membrane (CCM) to study amorphous thin film electrocatalysts in MEAs. Current de
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31

Bhandari, Rajkumar ms. "The synthesis of Pd-Ag composite membranes for H2 separation using electroless plating method." Digital WPI, 2010. https://digitalcommons.wpi.edu/etd-dissertations/27.

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One of the key elements to the success of Pd-Ag membrane based reactor for the H2 production is the synthesis of thin and highly selective membranes using the electroless plating method. This work describes the effect of electroless plating conditions on the obtained Pd and Ag deposits properties (morphology, compactness, phase structure, compositional homogeneity and adhesion) important from synthesis of thin and H2 selective membrane viewpoint. Both sequential and co-deposition deposition methods were investigated. The conventional Pd and Ag plating conditions (NH3+EDTA based bath) produce
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32

Onay, Aytun. "Hydrogen Storage Capacity Of Nanosystems: Molecular." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609636/index.pdf.

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In recent decades, tremendous efforts have been made to obtain high hydrogen storage capacity in a stable configuration. In the literature there are plenty of experimental works investigating different materials for hydrogen storage and their storage values. In the first part of this thesis the available literature data have been collected and tabulated. In addition to the literature survey the hydrogen storage capacity of carbon nanotubes and carbon nanotubes doped with boron nitride (CBN nanotubes) with different chirality have been investigated by performing quantum chemical methods at semi
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33

Jenkins, Timothy Andrew. "Short strong hydrogen bonds studied by inelastic neutron scattering and computational methods." Related Electronic Resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2003. http://wwwlib.umi.com/cr/syr/main.

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34

Stofella, Michele. "Hydrogen deuterium exchange: methods to probe protein dynamics at single residue resolution." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21242/.

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The purpose of this work is to provide computational methods to fingerprint protein dynamics probed by hydrogen deuterium exchange mass spectroscopy (HDX-MS). Hydrogen deuterium exchange consists in the spontaneous exchange of amide hydrogens of amino acids with deuterium contained in solution. The consequent increase in mass of the protein can be monitored by mass spectroscopy. Moreover, the exchange rate (or protection factor) provides a parameter probing protein dynamics at single residue resolution. The ExPfact algorithm is a computational method implemented to extract fine-grained informa
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35

Mueller, Timothy Keith. "Computational studies of hydrogen storage materials and the development of related methods." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42138.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2007.<br>Includes bibliographical references (p. 193-199).<br>Computational methods, including density functional theory and the cluster expansion formalism, are used to study materials for hydrogen storage. The storage of molecular hydrogen in the metal-organic framework with formula unit Zn40(02C-C6H6-COD3 is considered. It is predicted that hydrogen adsorbs at five sites near the metal-oxide cluster, in good agreement with recent experimental data. It is also shown that the metal-oxide cluste
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36

Lyu, Xiang. "Furfural and Hydrogen Production from Raw Biomass Integrating Chemical and Electrochemical Methods." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1605089185418469.

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37

Bush, Tabitha Christi. "Development of a method for calculating Delta Scuti rotational velocities and Hydrogen-Beta color indices /." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2095.pdf.

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38

Buehler, Tabitha Christi. "Development of a Method for Calculating Delta Scuti Rotational Velocities and Hydrogen Beta Color Indices." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/1538.

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To add to the understanding of the structure and evolution of Delta Scuti stars, 167 Delta Scutis north of -01 degrees declination and brighter than 13th magnitude have been observed spectroscopically. A method for calculating rotational velocity values and Hydrogen-Beta color indices for the stars in the data set with no previously published values is developed, using the stars in the data set brighter than 7th magnitude. Rotational velocity values for four stars with previously unknown values and Hydrogen-Beta index values for five stars with previously unknown values are calculated.
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Fischesser, Demetria M. "Novel in vitro and in vivo Methods to Study the Cardiac Fibroblast." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1595845515089609.

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40

Sabbatini, Marie. "Quantification of hydrogen ion and chloride ion content in isocyanate by electrochemical methods." Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415365.

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41

Weis, Franz A. "Hydrogen in nominally anhydrous silicate minerals : Quantification methods, incorporation mechanisms and geological applications." Doctoral thesis, Uppsala universitet, Mineralogi, petrologi och tektonik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-306212.

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The aim of this thesis is to increase our knowledge and understanding of trace water concentrations in nominally anhydrous minerals (NAMs). Special focus is put on the de- and rehydration mechanisms of clinopyroxene crystals in volcanic systems, how these minerals can be used to investigate the volatile content of mantle rocks and melts on both Earth and other planetary bodies (e.g., Mars). Various analytical techniques for water concentration analysis were evaluated. The first part of the thesis focusses on rehydration experiments in hydrogen gas at 1 atm and under hydrothermal pressures from
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42

Palazzolo, Alberto. "Development of new methods for the hydrogen isotope exchange catalyzed by metallic nanoparticles." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS276.

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Les composés marqués aux isotopes de l’hydrogène possèdent des nombreuses applications lors des phases précliniques de développement des médicaments. Par exemple, les composés deutérés sont utilisés comme étalons internes dans la quantification par LC-MS de métabolites alors que les molécules tritiées sont souvent des radiotraceurs de choix dans les études d’absorption, distribution, métabolisme et excrétion (ADME) moléculaire des candidats médicaments. Après une brève introduction, un premier chapitre discutera du développement d’une méthode douce et sélective, catalysée par des nanoparticule
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43

Gatty, Hithesh K. "MEMS-based electrochemical gas sensors and wafer-level methods." Doctoral thesis, KTH, Mikro- och nanosystemteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-172955.

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This thesis describes novel microel ectromechanical system (MEMS) based electrochemical gas sensors and methods of fabrication. This thesis presents the research in two parts. In the first part, a method to handle a thin silicon wafer using an electrochemically active adhesive is described. Handling of a thin silicon wafer is an important issue in 3D-IC manufacturing where through silicon vias (TSVs) is an enabling technology. Thin silicon wafers are flexible and fragile, therefore difficult to handle. In addressing the need for a reliable solution, a method based on an electrochemically activ
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44

Zlobinski, Miroslaw [Verfasser], Ulrich [Akademischer Betreuer] Samm, Georg [Akademischer Betreuer] Pretzler, and Volker [Akademischer Betreuer] Philipps. "Laser Induced Desorption as Hydrogen Retention Diagnostic Method / Miroslaw Zlobinski ; Ulrich Samm, Georg Pretzler, Volker Philipps." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2016. http://d-nb.info/1114884928/34.

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45

Oftadeh, M., M. Gholamian, and H. H. Abdallah. "Investigation of Interaction Hydrogen Sulfide with (5,0) and (5,5) Single-Wall Carbon Nanotubes by DFT Method." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35161.

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In the present study the interaction of Hydrogen Sulfide with inside and outside single-wall carbon nanotube of (5,0) and (5,5) was investigated. This study was conducted using DFT at B3LYP/6-31G* level of theory. Computational calculations were performed in the gaseous phase in Gaussian 09. The geometry of all molecules under investigation was determined by optimizing all geometrical variables without any symmetry constraints. The harmonic frequencies were computed from analytical derivatives for all species in order to define the minimum-energy structures. The adsorption energies, the t
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46

Smith, Michael E. "Method Development for On-Site Air Quality Analysis and Design of Hydrogen Sensors for Orthopedic Applications." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583999801696302.

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47

De, León Almaraz Sofia. "Multi-objective optimisation of a hydrogen supply chain." Thesis, Toulouse, INPT, 2014. http://www.theses.fr/2014INPT0009/document.

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L'hydrogène produit à partir de sources renouvelables et utilisé dans les piles à combustible pour diverses applications, tant mobiles que stationnaires, constitue un vecteur énergétique très prometteur, dans un contexte de développement durable. Les « feuilles de route » stratégiques, élaborées au niveau européen, national ou régional, consacrées aux potentialités énergétiques de l’hydrogène, ainsi que l’analyse des publications scientifiques ont cependant identifié le manque d'infrastructures, comme l'un des principaux obstacles au développement de l'économie « hydrogène ». Cette étude s’ins
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48

Grube, Svenja [Verfasser]. "Characterisation of the homogeneity of thiol-ene hydrogels by light-scattering methods / Svenja Grube." Clausthal-Zellerfeld : Universitätsbibliothek Clausthal, 2013. http://d-nb.info/103202173X/34.

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49

Barritt, Andrew Stephen. "Detection of hydrogen embrittlement in steel and steel alloys using methods of neutron radiography." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/32597.

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50

Gorelov, Vitaly. "Quantum Monte Carlo methods for electronic structure calculations : application to hydrogen at extreme conditions." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASF002.

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Le problème de la métallisation de l'hydrogène, posé il y a près de 80 ans, a été désigné comme la troisième question ouverte en physique du XXIe siècle. En effet, en raison de sa légèreté et de sa réactivité, les informations expérimentales sur l'hydrogène à haute pression sont limitées et extrêmement difficiles à obtenir. Il est donc essentiel de mettre au point des méthodes précises pour guider les expériences. Dans cette thèse, nous nous concentrons sur l'étude de la structure électronique, y compris les phénomènes d'état excité, en utilisant les techniques de Monte Carlo quantique (QMC).
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