Materials Literature
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The results of researches of surface roughness changes are presented after the plasma work-hardening and subsequent wear. Influence of placing of the work-hardened zones was checked up on surfaces in relation to direction of the mutual skidding of details on the change of roughness after a wear
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
Neste estudo, foi realizada a síntese dos copolímeros em bloco de poliestireno (PS) e poli(metacrilato de metila) (PMMA) com poli(ácido lático) (PLA). Primeiramente, foi realizada a síntese do PLA-Br pela abertura de anel do D,L-lactídeo, empregando o iniciador bifuncional, 2,2,2-tribromoetanol. Por apresentar termina…
Shear behavior is one of the most important mechanical characteristics that contribute to performance and appearance of woven fabrics. Because of the anisotropy of woven fabric, its shear properties are tested in various directions. This paper describes an experimental study on the shear properties of woven fabric whe…
Silicon has long been the most important material in semiconductor technology, having a huge impact in the field. This is predominantly due to its highly useful electrical and optical properties. It has also been shown to phase transform under pressure, from the diamond cubic Si-I that is ubiquitous in our modern soci…
In the last few years there has been a growth in the nanotechnology industry. The increase in the discovery and production of new nanomaterials, were the nanoparticles are included, makes their release in the environment more likely. Although in the recent years there has been an increase of published studies related…
La curiethérapie prostatique se fait en implantant des grains radioactifs dans une zone tumorale. À cause des soucis temporaux, la planification considère ces grains comme des sources ponctuelles dans un monde uniforme d’eau. Ce mémoire présente une évaluation de l’impact de deux effets perturbant la dosimétrie, avec…
In this work, we report the use of plasticized poly vinylchloride (PVC) as a thin film coating for the prevention of aqueous biofouling specifically in the initial microfouling stages. The materials contained a series of chloroparaffin-derived plasticizers with fundamental differences in chemical structure. Each plast…
Severe plastic deformation emerged as new processing to fabricate ultrafine grain metallic materials with a grain size under one micron meter, or nanocrytalline metals in a bulk form. It was found that such ultrafine grain (UFG) and nanocrystalline metals have superior mechanical properties with high strength and rela…
Com o intuito de acompanhar a tendência de desenvolvimento da engenharia civil, em especial da área de materiais de construção, este trabalho aborda uma propriedade do concreto, ainda, pouco utilizada pelos profissionais da engenharia civil, que é o módulo de elasticidade do concreto. Apresenta também dois ensaios par…
This thesis is a study of the mechanisms and applications of the near-field interaction in metamaterial systems, investigated using pairs of resonators. Metamaterials are arrays of sub-wavelength resonant elements, and can be engineered to create exotic properties such as artificial magnetism and negative refraction.…
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
A deposicao de filmes finos pelo metodo de deposicao fisica de vapor (DFV) por plasma e largamente estudado para aplicacoes tecnologicas visando a utilizacao industrial em larga escala. A deposicao de filmes finos, desperta interesses por apresentar melhorias nas propriedades mecânicas, opticas, eletricas, tribologica…
Este trabalho de tese teve como principal objetivo a obtenção de pós-compósitos de misturas de fases cerâmicas com alta dureza por meio da síntese de moagem de alta energia e caracterização de amostras sinterizadas quanto à dureza. Em uma fase exploratória foram obtidas várias reações aluminotérmicas, a partir de prec…
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
Статья посвящена рассмотрению особенностей флотирующих систем доставки пероральных лекарственных средств, методов оценки их эффективности в условиях модели invitro. Метод доставки лекарственного средства имеет существенное влияние на его терапевтическую эффективность, что делает приоритетным создание лекарств нового п…
A carbon nanotube is a hollow cylinder, which is made of carbon atoms in the hexagonal lattice, which is made by rolling up the grahene sheet in the specific chiral vector direction. This cylindrical structure has outstanding mechanical, electrical thermal properties. Several attempts have been done to obtain the mech…
International audience
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
Předmětem teto studie jsou Martenziticke oceli 22Mn5B využivane v automobilovem průmyslu. Hlavnim cilem provedených analýz je studium mechanických rozdilů v tepelně ovlivněne oblasti, v důsledku bodoveho svařovani. Vznik tepelně ovlivněne oblasti je experimentalně simulovan různými způsoby. Cilem teto prace je zjistit…