نتایج جستجو برای: shs self propagating high temperature synthesis recently
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The classical image theory valid for electromagnetic (EM) sources in an isotropic medium above a planar perfect electric conductor (PEC) or perfect magnetic conductor (PMC) surface was more recently extended to involve the planar soft-and-hard surface (SHS) boundary that can be realized with tuned corrugations. The image principle is now generalized to EM sources in isotropic chiral medium abov...
This case study reviews a GEF/World Bank-supported rural electrification project involving SHS dissemination via exclusive concessions in Argentina. The case study focuses on aspects of the project that are most relevant to carbon abatement. Since the Argentina project will receive grant funding under the GEF’s climate change portfolio, certain carbon abatement issues are addressed in GEF and W...
Smart Home System (SHS) is one of popular applications in ubiquitous computing, which provides convenient services for a user with userfriendly intelligent system interfaces. Among them, voice recognition is a popular interface. However, voice command statements given by users are often too unclear and incomplete for the devices in SHS to understand the original user intention. So, the devices ...
RESEARCHDESIGNANDMETHODSdThe Strong Heart study (SHS) is a multicenter, prospective study of cardiovascular disease (CVD) and its risk factors among AI adults. The present analysis used lung function assessment by standard spirometry at the SHS second examination (1993 to 1995) in 2,396 adults free of overt lung disease or CVD, with or without DM or MS. Among MS-free/DM-free participants, the d...
This paper introduces a method for achieving stable periodic walking for legged robots. This method is based on producing a type of odd-even symmetry in the system. A hybrid system with such symmetries is called a Symmetric Hybrid System (SHS). We discuss the properties of an SHS and, in particular, will show that an SHS can have an infinite number of synchronized periodic orbits. We describe h...
So far, the studies regarding innovative High-Entropy Borides (HEBs), which belong to more general class of Ultra-high temperature ceramics (UHTCs), have been entirely confined their fabrication or characterization from microstructural, mechanical and oxidation resistance viewpoints. In this work, optical properties two members HEBs, i.e. (Hf0.2Zr0.2Ta0.2Mo0.2Ti0.2)B2 (Hf0.2Nb0.2Ta0.2Mo0.2Ti0.2...
Self-propagating High-temperature Synthesis (SHS) can be used to synthesize inorganic materials that in some cases cannot be prepared by conventional methods. SHS is an exothermic process whereby a green mixture is ignited by point source initiation—usually by a flame or heated wire. A hot synthesis wave moves through the material converting reactants to products. The most promising means for c...
TiB₂-based ceramic matrix composites (CMCs) were fabricated using elemental powders of Ti, B and C. The self-propagating high temperature synthesis (SHS) was carried out for the highly exothermic "in situ" reaction of TiB₂ formation and the "tailing" synthesis of boron carbide characterized by weak exothermicity. Two series of samples were fabricated, one of them being prepared with additional ...
Equilibrium Health Spending and Population Aging in a Model of Endogenous Growth: Will the GDP Share of Health Spending Keep Rising? The apparently unrelenting growth in the GDP-share of health spending (SHS) has been a perennial issue of policy concern. Does an equilibrium limit exist? The issue has been left open in recent dynamic models which take income growth and population aging as given....
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