Materials Literature
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A study was made on the temperature behavior of the main piezoelectric parameters, namely the electromechanical coupling factor kp, the mechanical quality factor Qm, the dielectric permittivity (real and imaginary part), the loss tangent tg and the piezoelectric charge constants d33and d31of a soft type piezoelectric…
An electromagnetic dynamic plasticating extruder, invented by the authors, was used to prepare isotactic polypropylene (PP) sheets. Tensile and impact tests show that the extruded samples can simultaneously be reinforced and toughened along the flow and transverse directions in a moderate frequency and amplitude range…
Homologous series of liquid crystalline azoesters and azomethine esters consisting of a (S)‐1‐methylpropyl group attached in one of the terminal positions have been synthesized and thermally characterized. All twenty‐four derivatives from both series, namely, the 4‐(4‐n‐alkoxybenzoyloxy)‐4′‐1‐(S)‐methylpropylazobenzen…
Based on a large program of experimentations implemented during the 90s, the industrial achievement of new fuel assemblies designs with increased performances opens up new prospects. Thus, conditions are met to implement new fuel managements on the Electricité De France fleet with increased enrichment and irradiation…
An interlayer tunneling technique has been used for spectroscopy of charge density wave (CDW) energy gaps (Δ1,2) in NbSe3 subsequently opened at the Fermi surface on decreasing temperature at T p1 = 145 K (CDW1) and at T p2 = 60 K (CDW2). We found that the CDW2 formation is accompanied by an increase of the CDW1 gap b…
Syntheses, structures and properties of nanobiohydrids based on the anions of biologically important organic molecules and various layered double hydroxides (LDHs) are reviewed. Emphasis has been laid on collecting works on the controlled delivery and release of LDH-intercalated pharmaceutically important compounds as…
Dynamic domain-structure behavior during rotational magnetization reversal of a single-crystal Fe-3% Si disk with the [001] crystallographic axis deviated slightly (at an angle β = 1.5°) from the specimen plane have been investigated on the surface of the specimen. New regularities of the changes in the closure domain…
Changes in the mineralogical composition of the clay fraction (<0.001 mm) sampled from soils of the model lysimetric experiment of Moscow State University have been studied. The mineralogical composition of clay is represented by the paragenetic association of minerals typical of noncalcareous mantle loams in the cent…
Abstract Bis(n-butylammonium) pentachloroantimonate(III) was obtained in a reaction of n-butylammonium chloride and antimony trichloride (molar ratio 2 : 1; cation : Sb) in acidic aqueous solution. To obtain further information about the mechanism of the earlier reported phase transitions at 229 and 315 K the structur…
l'occasion du 150e anniversaire de la parution de l'ouvrage de Henry Darcy intitulé Les fontaines publiques de la ville de Dijon et dans lequel il énonce les principes de la loi qui porte son nom, le présent article met en perspective le rôle essentiel de la découverte de Henry Darcy dans les études d'écoulement des f…
The role of semiconductor packaging has evolved from space transformation and environmental protection, to becoming an important enabler for silicon and system performance. This paper examines some of the advances in flip-chip packaging as an enabler of power delivery and power removal using a microprocessor as an exa…
By solvent crystallization using diethyl ether as the solvent on sterol mixture, brassicasterol and stigmasterol that contains a side chain with double bond were separated from campesterol and β‐sitosterol with a saturated side chain. The total campesterol and β‐sitosterol content in the liquid phase was more than 97%…
The thermal conductivity of solid parahydrogen is investigated using the stationary method with a plane sample in the temperature range 1.5–6.0 K in order to reveal a Poiseuille flow in solid hydrogen. It is established that the thermal conductivity at temperatures below the low-temperature maximum decreases very rapi…
Adherent and low-stress a-C:H films were deposited on Ti6Al4V and stainless steel substrates using PECVD and IBAD techniques. An amorphous silicon interlayer was applied to improve the adhesion of the a-C:H films on the metal substrates. The XPS technique was employed to analyze the chemical bondings within the interf…
Purpose The aim of presented investigation was to test developed testing device Griff tester, created for the objective evaluation of textile hand and to compare the obtained data with sensory evaluation results of textiles, subjected to different final treatments. Design/methodology/approach The effect of two finishi…
Abstract This document shows that new electrically active defects can develop in the homoepitaxial layer grown on Ib diamond substrates, related to the increase of the dislocation density. Deep centres, which are able to compensate the boron acceptors, specially when the growth process allows boron incorporation below…
Characterizing Optical Properties of Self-Assembled Gold Nanoparticles for Surface Plasmon Resonance Device Applications, Chen, Hsuen-Li, Cheng, Hsu-Chun, Ko, Tsung-Shine, Chuang, Shang-Yu, Chu, Tien-Chi
The heat capacities of cattle and poultry collagen samples were measured by adiabatic calorimetry in the range 80–330 K. The temperatures of physical transitions in these samples were determined. Endothermic relaxation transitions (γ 1 , γ 2 , and β) were observed in the heat capacity curves of the studied collagen sa…
Purpose Aims to analyse the stress distribution in a circular flexible sheet. Part I provides a theoretical approach to the analysis of the bagging deformation in textile fabrics. Design/methodology/approach The investigation includes analysing the stress distribution in a circular flexible sheet clamped around its ci…
Single carbon nanotubes are investigated with respect to possible antenna applications. On the basis of an electromagnetic analysis and under consideration of the quantum transport effects a transmission line model for the electromagnetic wave propagation along single carbon nanotubes is investigated. The scattering o…