Materials Literature
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The application of the factor analysis to the studies of the nonlinear elasticity of the piezoceramic materials is presented. All physical properties of these materials are strongly nonlinear dielectric, elastic and unelastic. Moreover, all these properties manifest creep. Simultaneous measurements of all these charac…
International audience
International audience
International audience
During hyperbaric decompression, the absolute ambient pressure is reducing; microbubbles may be generated from pre-existing gas nuclei. An accurate monitoring of the size and of the density of the bubble population will provide a valuable means to understand the nucleation and growth processes in tissues. In this aim,…
International audience
International audience
Este trabalho envolveu a sintese de um oxido com a estrutura perovskita (ABO3), o estanato de estroncio (SrSnO3), com estrutura ortorrombica com grupo espacial Pbnm, usando o metodo dos precursores polimericos. Este material apresenta aplicacoes como capacitores, sensores de gases como o CO, NOx, H2, umidade e atualme…
Realizovaný prototyp, byl ověřen pro zavedeni výroby modifikaci relativně běžně dostupných analytických vah, přinesl výraznou cenovou usporu v porovnani s nakupem komercniho zařizeni urceneho přimo na měřeni povrchove energie Washburnovou metodou. Metoda je založena na měřeni stoupani kapaliny do porů vzorku umistěneh…
Miniaturized multi-electrode arrays are MEMS devices that have found use as neural prosthetics (Neuro-MEMS). As implants they can interface with neurons as sensors or actuators and help compensate for loss of sensory input, motor control, or cognitive function. The micro-electrodes, studied here, were developed in-hou…
This proposal describes the proposed renewal of a theoretical research program on the structure and reactivity of molecules adsorbed on transition metal surfaces. A new direction of the work extends investigations to interfaces between solid surfaces, adsorbates and aqueous solutions and includes fundamental work on p…
Sheet Steels Low-carbon sheet steel may be finished by hot rolling or cold rolling. Hot-rolled steel has a rougher surface finish that limits its use to applications in which surface appearance is not important (e.g., auto underbodies and firewalls). Cold-rolled steels are almost always recrystallized before sale to f…
Brain parenchymal extravasation of contrast has been described after infusion of larger amounts of iodinated X-ray contrast agent. We describe a case in which a patient after infusion of 500 ml iomeprole 350 mg/ml developed neurological symptoms and a subsequent cerebral computed tomography (CT) scan was interpreted a…
The radiation-induced disordering and amorphization are considered. These phenomena are not connected with the fluxes of impurity atoms and radiation defects. The criteria for radiation amorphization which is connected with the degree of mixing of the alloy components, are discussed.
In 2010, the Department of Energy (DOE) Chief of Nuclear Safety and Office of Health, Safety and Security (HSS), with the support of industry experts in atmospheric sciences and accident dose consequences analysis, performed detailed analyses of the basis for the dry deposition velocity (DV) values used in the MACCS2…
Thick nanoporous oxide films exhibiting interference colors were grown on AISI 304L stainless steel by triangular current scan method in 5 M H2SO4 + 2.5 M H2CrO4 using different electrolysis times. The nanocrystalline spinel oxide films thus obtained were electrochemically characterized by cyclic voltammetry at 1 mV•s…
Models and mechanisms of intrinsic radiation defect formation in the metals and alkali-halide crystals are considered. The effect of irradiation conditions (temperature, absorbed dose, etc.) on the formation of the primary and secondary defects, fomation of the aggregate radiation defects (voids), and affection of hea…
The purpose of this work was to study both the performance and the effectiveness of using long carbon fiber reinforced concrete (LCFRC) in impact loading. Materials studied include four square concrete panels with fibers, two panels with reinforcement, and two panels with plain concrete. Two different types of long ca…
In this study, the wrinkle effect on the tear propagation direction was studied by LEFM based approaches and by cohesive zone failure analysis. A rectangular tensile membrane configuration and a corner-loaded square membrane configuration both having a slant center-cut were considered. The membrane was modeled using s…
Advances toward the development of light-weight fully electric aerospace structures lead to the need of replacing on-board batteries with lighter and more efficient energy storage devices and systems. Here a novel self-rechargeable multifunctional carbon fiber composite is presented. The composite has the capability t…