نتایج جستجو برای: nip sic
تعداد نتایج: 13926 فیلتر نتایج به سال:
Abstract We present a systematic study of the regularity phenomena for NIP hypergraphs and connections to theory (locally) generically stable measures, providing model-theoretic hypergraph version results Alon-Fischer-Newman Lov\'asz-Szegedy graphs bounded VC-dimension. also consider two extremal cases distal hypergraphs, improving generalizing corresponding in literature. Finally, we related q...
Introduction: Silicon carbide is a particularly interesting phase because more than a hundred different polytypes can be formed in the laboratory. The formation of these polytypes depends strongly on growth conditions (e.g., temperature, pressure). Daulton et al. [1] used TEM to study the microstructures of ~500 presolar SiC grains in an acid residue of the Murchison meteorite (KJB fraction of ...
The generation of renewable H2 through an efficient photochemical route requires photoinduced electron transfer (ET) from a light harvester to an efficient electrocatalyst in water. Here, we report on a molecular H2 evolution catalyst (NiP) with a DuBois-type [Ni(P2(R')N2(R"))2](2+) core (P2(R')N2(R") = bis(1,5-R'-diphospha-3,7-R"-diazacyclooctane), which contains an outer coordination sphere w...
With increasing interest in the carbon cycle on arid land, there is an urgent need to quantify both soil organic carbon (SOC) and inorganic carbon (SIC) thus to assess various methods. Here, we present a study employing three methods for determinations of SOC and SIC in the Yanqi Basin of northwest China. We use an elemental analyzer for both SOC and SIC, the Walkley-Black method for SOC, a mod...
BACKGROUND AND AIMS To evaluate the National Immunisation Programme (NIP) a population-based cross-sectional seroepidemiological study was performed in the Netherlands. We assessed diphtheria antitoxin levels in the general Dutch population and in low vaccination coverage (LVC) areas where a relatively high proportion of orthodox Protestants live who decline vaccination based on religious groun...
Background and objective: The use of fractional exhaled nitric oxide (FeNO) concentration has been proposed as a surrogate marker for monitoring airway response to specifi c inhalation challenge (SIC). We investigated the usefulness of FeNO measurements for monitoring airway response to SIC with occupational agents. Material and methods: Workers with suspected occupational asthma were recruited...
Silicon carbide (SiC), a compound of silicon and carbon, with chemical formula SiC, the beta modification ( β-SiC), with a zinc blende crystal structure (similar to diamond), is formed at temperature below 1700°C. β-SiC will be the most suitable ceramic material for the future hard tissue replacement, such as bone and tooth. The in vitro cytotoxicity of β-SiC nanowires was investigated for the ...
abstract: in this study, al 2 o 3 –sic nanocomposites have been fabricated by mixing of alumina powder containing 0.05% weight magnesium oxide and silicon carbide nano powders, followed by hot pressing at 1650 0 c. the mechanical properties of al 2 o 3 -sic nanocomposites containing different volume fraction (2.5, 5, 7.5, 10 and 15%) of nano scale sic particles were investigated and compared wi...
The superior properties of silicon carbide (SiC) power electronic devices compared with silicon (Si) are expected to have a significant impact on next-generation vehicles, especially hybrid electric vehicles (HEVs). The system-level benefits of using SiC devices in HEVs include a large reduction in the size, weight, and cost of the power conditioning and/or thermal systems. However, the expecte...
Development of efficient and stable electrodes for hydrogen oxygen evolution from water constituted abundant elements prepared by sustainable scalable procedures is considerable importance producing green renewable electricity. Herein, a method the preparation Ni 2 P, Fe FeP supported on N-doped graphene (NiP/NG FeP/NG) reported. The procedure uses metal salts, phosphorous oxide, chitosan as pr...
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