Materials Literature
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In this work porous silicon where prepared by chemical etching assisted with laser. The structural and optical properties of porous silicon are investigated using atomic force microscopy (AFM) and FTIR spectroscope. FTIR spectrum exhibit the formation of SiHx (x=1,2) and Si-O bonds. The atomic force microscopy AFM inv…
The aim of this paper was to examine the surface tension of the melt mixture of salts NaCl and KCl at temperatures 750, 800 and 850 °C by maximum bubble pressure method. Some difference between measured values of the surface tension as dependence on the method of calculation was observed. This difference results from…
The object of the present work is to obtain a certain superordination for certain new classes of analytic and univalent functions using Aouf et al derivative operator.
Abstract : Design and simulation of lightweight composite vehicle armors require mechanical characterization and quantification of the interfacial bond strength between metallic and ceramic components. This report presents a combined numerical and experimental technique to estimate the interfacial strength parameters…
Thin light-active layers of the CuInSe2 solar cell were prepared on Mo-coated sodalime glass substrates by one-step electrodeposition and post-annealing. The structure, morphology, and composition of CuInSe2 film could be controlled by deposition parameters, such as the composition of metallic precursors, the concentr…
Alkalinity of the surroundings is the basis to study the MICP technology. Alkalinity of pore solution and strength of cement paste made of various cementitious materials were studied. Results show that the alkalinity of pore solution of cement paste decreased with the increase of sulpho-aluminate cement content. pH va…
En este artículo se presentan los resultados de un estudio hecho por la autora para la fábrica nacional Metalco, productora en el país de elementos de acero laminados en frío. Dicho estudio es parte de un programa de investigaci;on sobre las propiedades de este tipo de elementos estructurales, el cual la autora está r…
Tantalum carbide crystallites which is to be used for H₂ fuel cell has been synthesized via a temperature-programmed reduction of Ta₂O 5 with pure CH₄. The resultant Ta carbide crystallites prepared using two different heating rates and space velocity exhibit the different surface areas. The O₂ uptake has a linear rel…
This review summarizes the current state of lead zirconium titanate (PZT) that used for energy storage based organic capacitor. The particular focus is on dielectric material PZT properties for achieving high-k dielectric constant (900-1300) concerning for DC power application. PZT is well known of its perovskite stru…
The title cobalt complex (C 10 H 38 Co 2 O 26 ) consists of [Co(H 2 O) 4 (C 10 H 2 O 8 )] 2- n anionic chains, balanced by [(Co(H 2 O) 6 ] 2+ cations and eight solvato water molecules, some of which are disordered. The chains are formed by Co(H 2 O) 4 "beads" threaded by fully deprotonated benzenecarboxylato anions bi…
Successive extraction method of dried fruits of Phaleria macrocarpa had afforded chloroform, ethyl acetate and ethanol crude extracts. Two benzophenone derivatives which are 2,4,4'-trihydroxy-6-methoxybenzophenone (1) and 4,4'-dihydroxy-2methoxy-benzophenone-6-O--D-glucopyranoside (2) were isolated from the ethyl acet…
Abstract Grain size effect on the phase composition of scandia stabilized zirconia ceramics was studied experimentally. It was established using X‐ray phase analysis that the grain size decrease from 16 to 0.6 µm results in the tetragonal‐to‐rhombohedral phase transition. It was shown that heating of the fine‐grained…
To our knowledge, the stability results reported in the literature only concern cells made from classical doctor-bladed or screen-printed nanoparticles films. This study focuses on the comparison of the long-term stability of these cells with DSSCs working with templated mesoporous films. Indeed, the increased surface…
타지키스탄 산 루비의 보석 광물학적 특징들을 알기 위해 물리적 특성, 원소분석, 내포물 분석, 그리고 분광분석(UV-VIS 분광기, FTIR 분광기, ED-XRF 분광기)을 수행하였다. 타지키스탄 산 루비는 장파에서는 보통에서 매우 강한 적색 또는 오렌지색을 띄었으며, 단파에서는 장파에서보다는 약간 약한 적색 또는 오렌지적색을 띈다. 자외선-가시광선 분광분석 결과, 3개의 흡수선 468.5, 475와 476.5 nm이 크롬이 함유된 루비의 대표적인 특징으로 나타났고, 넓은 흡수 밴드 550 nm와 적색 영역에서 몇 개의 흡수밴드가 나타나서 전체적인 루비 스펙트럼을…
Ca3Co4O9 powders were synthesized by a solid-state reaction method. Porous Ca3Co4O9 ceramics with parallel sheet shaped pores were prepared by a template sacrifice method using epispastic polystyrend (EPS) hollow spheres as the templates. During compaction of the green body, the EPS hollow spheres change into EPS disc…
Rattan biomass is one of the agricultural waste that can be used as a source of cellulose nanoparticle. To produce cellulose nanoparticle bark rattan that is low density, good mechanical properties, natural resources and renewable resources needed a new method of development nanotechnology using hummer mill methods. T…
The purpose of this present paper is to derive some subordination and superordination results for certain normalized analytic functions in the open unit disk. Relevant connections of the results, which are presented in the paper, with various known results are also considered.
Ba0,50Sr0,50Co0,80Fe0,20O3-d (BSCF) apresenta propriedades físicas, químicas e microestruturais adequadas para compor o cátodo de uma célula a combustível de óxido sólido de temperatura intermediária (ITSOFC). Este trabalho tem por objetivo a síntese e a caracterização do BSCF obtido pelo método dos citrados-EDTA. Os…
Hierarchical self-assembly is often exploited by nature to build complex functional entities. A similar approach yielded a library of dynamic colloid-in-tube structures, such as colloidal zigzags, double- and triple-helices, by utilizing the thermo-reversible co-assembly of colloidal spheres and molecular microtubes,…
Abstract In this paper we derive some subordination and superordination results for certain p-valent analytic functions in the open unit disc, which are acted upon by a class of a linear operator. Some of our results improve and generalize previously known results.