Materials Literature
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Single-layer graphene exhibits exceptional mechanical properties attractive for optomechanics: it combines low mass density, large tensile modulus, and low bending stiffness. However, at visible wavelengths, graphene absorbs weakly and reflects even less, thereby inadequate to generate large optical forces needed in o…
Abstract : We have demonstrated a method to improve the capacity of microporous graphene electrodes by in-filling its cavities with graphene eggshells. The eggshell increases the volumetric energy density and its interconnected networks shorten the Li-ion diffusion pathway and ultimately enhance the rate capabilities.…
This Bachelor thesis discusses green subaerial algae of the genus Trentepohlia (Ulvophyceae, Chlorophyta). Firstly, I focus on general description of the family Trentepohliaceae and the genus Trentepohlia, especially on morphology, ultrastructure and reproduction. Secondly, I summarize the knowledge of the literature…
Cílem této práce je ukázat vztah mezi bezpečností jaderného paliva, experimenty ve výzkumných reaktorech a výpočetními kódy. Práce je zaměřena na výpočetní kód Transuranus. V práci jsou představeny čtyři experimenty, které byly modelovány v kódu Transuranus. Hlavní důraz je kladen na uvolnění plynných produktů štěpení…
The purpose. To evaluate the possibility of U-implants of Ukrainian production application at treatment of lumbar spine stenosis.Material and methods. Numerous studies (chemical, microscopic, phase analysis) of alloy and strength characteristics of Coflex implant were conducted that gave a possibility to create and su…
Poškozování paliva během provozu reaktoru je ve světě celkem běžným jevem. Teoretická část této práce se věnuje příčinám tohoto poškozování a jsou zde uvedeny mechanismy vzniku poškození a případná opatření proti jejich dalšímu výskytu. Vhodnou metodou sledování paliva během provozu je možné včas podchytit nepříznivé…
Electrons in graphene have four flavors associated with low-energy spin and valley degrees of freedom. The fractional quantum Hall effect in graphene is dominated by long-range Coulomb interactions which are invariant under rotations in spin-valley space. This SU(4) symmetry is spontaneously broken at most filling fac…
Location and dispersion of dumbbell-shaped fullerene (C 60 ) bonding polyhedral oligomeric silsesquioxane (POSS) NPs were investigated on a variety of polystyrene (PS) and polymethylmethacrylate (PMMA) derivative polymer conditions.In the cases of homopolymers and polymer blends samples, the priority of C 60 -POSS NPs…
A series of 4,4'-((1E,1'E)-(perfluoro-1,4-phenylene)bis(ethene-2,1-diyl))bis((nalkoxy)benzene)) (n = 1 to 12) were synthesized by a three step strategy.Thermotropic behaviors of 5 in 12 molecules were studied by differential scanning calorimetery.With the enhancement of arene-perfluoroarene interaction, this series of…
Polyhydroxyalkanoates (PHAs) are intracellular granules found in a wide variety of microorganisms under limited nutrient conditions when carbon source is available in excess. These polymers, usually from lipid nature, are used as carbon and energy sources for metabolic synthesis and growth. Despite the important role…
The industry is seeking for weight reductions of large steel structures by utilizing high-strength steels and thin-plated structures together with laser-based welding processes. However, the fatigue strength of welds in thin-plated structures with plate thickness below 5 mm is observed to have large variation, which b…
The purpose of this study was to clarify challenges and requirements for certifying industrial gear units and their accessories for use in potentially explosive atmospheres. In addition, the process how to obtain specific certificates for gear units and their accessories in potentially explosive atmospheres is clarifi…
Communication orale
O aumento da demanda energética está sendo atendida em grande parte por reservas de \ncombustíveis fósseis, que emitem CO2, SOx e vários outros gases poluentes. Cresce \ntambém a busca por combustíveis que emitam menos poluentes e que possuam a mesma \neficiência energética. Neste contexto, o hidrogênio (H2) vem sendo…
In the weak regime, we suggest a model where superconductivity types I and II bind assuming an adiabatic hypothesis where the frequency of oscillation of free electrons is much smaller than of polarons coupled to phonons, and an itinerant antiferromagnetism appears. At the end of the article we derive an state's equat…
The objective of this study was to reveal anatomical and histological structure of the Black-scar oyster, Crassostrea iredalie gills . Oysters with shell length of 6-8 cm were randomly collected from the coasts of Chonburi Province. Results showed that the gills were classified as Pseudolamellibranch type. Four gill l…
The main objective of this study was to characterize hemocytes found in circulation of the Black-scar oyster, Crassostrea iredalie . Hemolymp was collected from heart chamber and used for hemocyte characterization under a light microscopy. Histological technique was also used to investigate hemocyte characteristics in…
North Carolina State University Theses Textiles.
Magnetic nanoparticles (MNPs) synthesized by a co-precipitation method of Fe 2+ and Fe 3+ in basic solution were coated with poly[(methacrylic acid)-ran-(2-methacryloyloxyethyl phosphorylcholine)] (PMAMPC-MNPs) via a chelation between a carboxyl group of PMAMPC and an iron atom. Polymer concentration and chelation tim…
Vitrification is currently the world-wide treatment of choice for the disposition of high-level nuclear wastes. In glasses, radionuclides are atomistically bonded into the solid, resulting in a highly durable product, with borosilicate glasses exhibiting particularly excellent durability in water. Considering that was…