Materials Literature
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Complex [Fe(II)Gd(III){pyCO(OEt)pyCOH(OEt)py}(3)](ClO(4))(2) (1) crystallizes in the Cc space group and contains one hexacoordinate ferrous ion and one enneacoordinate Gd(III) ion. Complex [Fe(2)(II)Gd(III){pyCO(OEt)py}(4)(NO(3))(H(2)O)][Gd(NO(3))(5)](0.5)(ClO(4)) (2) crystallizes in the C2/c space group and contains…
The study of the acoustical properties of bubbly flows remains a challenge for scientists. Classical theoretical results provide the expression of a complex effective wave number characterizing sound propagation through such a medium. Theoretical attenuation and phase-speed changes of sound can be obtained from this e…
Abstract Indium tin oxide (ITO) electrodes are widely used for liquid crystal applications as well as for measuring cells. Unfortunately, ITO layer possesses its own non zero resistivity R which produces (with the capacity C) the cut-off frequency f0 of RC circuit. Dielectric spectroscopy cannot be performed for high…
The Bi2O3-SiO2 (BS) glass-ceramics were prepared by melt-quench technique, and the crystallization kinetics and phase transformation behavior were investigated in accordance with Kissinger and Johson-Mehl-Avrami equation, DSC, XRD and SEM. The results show that in the heat treatment process (or termed as re-crystalliz…
In this work, polyvinyl alcohol (PVA) and zinc acetate, with small quantity of cobalt acetate as dopant were used to prepare composite nanofibres by electrospinning technique. The obtained nanofibres were calcined at 520°C in air. After calcination of the above precursor fibres, ZnO or ZnO/PVA and Co doped ZnO/PVA com…
The aim of this work was to study the effects temperature and microbial activity on the decrease kinetic of availabile P in two different soil types.Surface soils were sampled from Guilan and Hamadan provinces in north and northwest of Iran with temperate and semiarid climates.The availability of P in soil samples was…
Urea-functionalized mesoporous polymers (urea-MPs) were synthesized through the surfactant-directed urea-phenol-formaldehyde oligomers self-assembly approach. The as-prepared urea-MPs material exhibited superior catalytic activity than parent urea in water-medium Knoevenagel condensation reactions and could be used re…
Molecular dynamics simulations were performed to investigate the mechanical properties of a single-crystal gold nanosheet and graphene nanoribbon-embedded gold (GNR/Au) composites for various embedded locations, temperatures, and lengths. The computational results show that the Young's modulus, tensile strength, and f…
The influence of the substituents at silicon on the aggregation enhanced emission (AEE) of alternating dialkylsilylene-[4,4′-divinyl(cyanostilbene)] copolymers 3 and 4 is examined. The presence of the bulky isopropyl group in 3b significantly enhances the quantum yield upon aggregation. On the other hand, the emission…
Hybrid A–B–A type nanowires (NWs) with Ag5Te3–HgTe–Ag5Te3 composition have been created by the reaction of Hg2+ with Ag2Te NWs. The NW morphology of Ag2Te is preserved upon reaction with minor changes and the two separate phases formed are spatially separated within the same NW. The reaction of Hg2+ with Ag2Te NWs was…
The amount of polyynes produced by Nd:YAG laser (355, 532, and 1064 nm) ablation of fullerene and graphite pellet targets was the largest for 1064 nm ablation, contrary to the powder target in the previous report. This result is believed to come from the difference in the main polyyne-production area in liquids in the…
This work relates a study on a medieval coin found during archaeological works carried out at the site of Senhora do Castelo in Urros (Torre de Moncorvo, Portugal). The artefact has been identified as a coin of D. Afonso IX of Leon (1155–1188). The substratum showed composition typical of bullion, Cu-Ag (30–33%) with…
The tensile test of the recrystallized ODS ferritic steels was performed in the loading direction for the longitudinal and 45° inclined with respect to the grains alignment. The testing temperature was 800°C and the strain rate was 10–4 s–1. A clear serration structure was observed at near the grain boundaries at the…
Remarkable evolutionary changes in cell morphology during reactive polymer nanocomposite foaming are observed by controlled foaming of suspensions of montmorillonite clay in the oligomeric polyurethane component. Delaminated nanoplatelets, when present as a networked cluster in suspensions, are shown to have very high…
Analysis of the thermal decolouration kinetics of a spirooxazine dye (SOX) incorporated into various thermally responsive, amphiphilc block copolymers, poly(N-isopropyl acrylamide)-block-poly(N-acryloyl morpholine), was used to probe their self-assembly behaviour in water. The Arrhenius plots of the thermal decolourat…
The fabrication of nanostructured ZnO thin films is a critic process for a lot of applications of this semiconductor material. The final properties of this film depend fundamentally of the morphology of the sintered layer. In this paper a process is presented for the fabrication of ZnO nanostructured layers with morph…
Metals are ubiquitous pollutants present as mixtures. In particular, mixture of arsenic-cadmium-lead is among the leading toxic agents detected in the environment. These metals have carcinogenic and cell-transforming potential. In this study, we used a two step cell transformation model, to determine the role of oxida…
BACKGROUND: To realize the promise of personalized medicine, diagnostic instruments used for detecting and measuring biomarkers must become smaller, faster and less expensive. Although most techniques used currently to detect biomarkers are sensitive and specific, many suffer from several disadvantages including their…
A new method of synthesis of single phase ZrP2O7 was studied using hydrothermal reaction of amorphous ZrO(OH)2 with H3PO4 and subsequent air calcination. The reaction steps to ZrP2O7 were analyzed by means of XRD, TG/DTA and FT-IR. The hydrothermal reaction at 200°C for 18 h yielded well-crystallized tetraphosphate, Z…
Fatigue tests on wet steam generator 20G tubes were carried out and the metal magnetic memory (MMM) signals were detected. Though the analysis of MMM signals from different fatigue cycles, the variation characteristic of the MMM signals was obtained and a novel quantitative evaluation method of the early failure by MM…