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The effective ionic radii of Shannon & Prewitt [Acta Cryst. (1969), B25, 925-945] are revised to include more unusual oxidation states and coordinations. Revisions are based on new structural data, empirical bond strengt...

We demonstrate a simple, femtosecond-scale wavelength tunable, subwavelength-thick nanostructure that performs efficient wavelength conversion from the infrared to the ultraviolet. The output wavelength can be tuned by v...

Antimony chalcogenides solid solution (Sb _2 (S _1− _x Se _x ) _3 ) exhibit tunable optoelectronic properties suitable in various optoelectronic devices. Solid solution thin films were grown using thermal evaporation, ...

A technology for direct laser writing of code sequences on modulation disks has been developed and implemented, ensuring high accuracy and reliability in the process of forming structural elements. The main advantages of...

Abstract In the present work some of 1,2,3-selenadiazole compounds derived from corresponding semicabazones have been prepared. The reaction of substituted chalcone compounds (1a-c) and 4-methoxy benzyl cyanide give comp...

The trace elements enrichments and modes of occurrence were investigated in the feed coals and coal ashes from the thermal power plants Tunçbilek (Kütahya), Soma-Torku and Soma-Kolin (Manisa), Çan 18 Mart (Çanakkale)...

ObjectiveTo establish a double-layer solid phase extraction and high performance liquid chromatography （DLSPE-HPLC） method for the simultaneous determination of five active components， including Liquiritin， Isogl...

Coffee is a remarkable source of bioactive compounds, including anthocyanins, proanthocyanidins, and carotenoids, with health benefits. To fully understand the biochemical and molecular regulation mechanisms behind Coffe...

Two-dimensional (2D) materials have undergone a rapid development toward real applications since the discovery of graphene. At first, graphene is a star material because of the ultrahigh mobility and novel physics, but i...

In present work spectral distribution of absorption coefficient in the range of 100 – 300 K was investigated and band gap values evaluated. Parameters of Urbach rule were calculated and linearity of temperature depende...

Energy dispersive x-ray spectroscopy of lowtemperature b¢-Ag<sub>8</sub>SnSe<sub>6</sub> crystalcarried out. Energy dispersive spectrum shows only peaks related to Ag<sub>8</sub>SnSe&...

In this paper the compounds (11-20) (methyl pyrimidine - 2(1H)-one and others phenyl pyrimidine -2(1H)- one) that will prepared from α, β unsaturated carbonyl compounds they are called chalcones, that compounds prepare...

In this paper the synthesis of  N[(1E)-1- ( 3,5.- disubstituted phenyl -4,5-dihydro-1H- pyrazol-1- yl) ethylidene or methylidene] substituted aniline [13-15] [17-19] and 1,1-{benzene- 1,4- or -1,3- diylbis [nitrilo (E) ...

ABSTRACT In this paper the Synthesis of some substituted 2-Chloro-3-formyl quinoline (2a–d) by treating various substituted acetanilide or 1-(4-substituted phenyl) ethanone oxime with POCl3 in dimethyl formamide. It pr...

The temperature coefficient of refractive index dn/dT is determined for glassy allous of the system along the(Ag2S)x(As2S3)100-x, direction (0 < x <20) in the spectral interval of 1–5 μm at temperature of 77– ...

The purpose of the review is to analyze the results of scientific research on the effect of antioxidant activity of potatoes on human health, to consider modern approaches to breeding potato with high antioxidant activit...

1. El stock de carbono orgánico del suelo (COS) es un indicador de la calidad y salud del suelo. Su dinámica tiene un papel significativo en el balance global de las emisiones de gases con efecto invernadero (GEI). Los...

Metal halides perovskites, such as hybrid organic-inorganic CH3NH3PbI3, are newcomer optoelectronic materials that have attracted enormous attention as solution-deposited absorbing layers in solar cells with power conver...

Baltasar Castiglione, noble caballero emparentado con la casa de Gonzaga, brilló por la armoniosa desenvoltura de sus aptitudes. Estudió latín con Jorge Mérula, griego con Demetrio Chalcondilas y perfeccionó sus let...