Materials Literature
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The purpose of HV after-laying tests on cable systems on-site is to check the quality of installation. The test on extruded MV cable systems is usually a voltage test. However, in order to enhance the quality of after installation many researchers have proposed performance of diagnosis tests such as detection, locatio…
α‐alumina (α‐Al 2 O 3 , corundum) fibers exhibit high thermal and chemical stability, as well as good mechanical properties, even at high temperatures. Such characteristics make them good candidates for use in composites. Nevertheless, very few methods of producing α‐Al 2 O 3 fibers are available. In the present work,…
Tunneling transport measurements performed on single particles and on arrays of Fe 3 O 4 (magnetite) nanocrystals provide strong evidence for the existence of the Verwey metal-insulator transition at the nanoscale. The resistance measurements on nanocrystal arrays show an abrupt increase of the resistance around 100 K…
Two types of sperm are produced in the silkworm, Bombyx mori. Nucleate eupyrene sperm is an ordinary sperm that contributes to fertilization, while anucleate apyrene sperm is considered to play important roles in assisting eupyrene sperm. At the very late stage of spermatogenesis, a phenomenon called "peristaltic sque…
Ultra-high-molecular-weight-polyethylene (UHMWPE) surfaces are characterized in terms of roughness and wetting. Changes in the surface morphology of the polymer were induced macroscopically by mechanical friction and microscopically by ion implantation. The ion irradiation was obtained by using 300 keV Xe+ beams with…
X-ray crystallography enables details of covalent and non-covalent interactions to be analysed quantitatively in three dimensions, thus providing the basis for the understanding of binding of ligands to proteins as well as modes of action such as cell-surface binding. This article is concerned with current methods emp…
Abstract Adipic acid is produced industrially by the oxidation of cyclohexanone and cyclohexanol with nitric acid. Dinitrogen oxide (nitrous oxide, N2O), a non-CO2 greenhouse gas, is produced as a by-product in this process. We have investigated an industrial process for the production of adipic acid without the gener…
The solution of elasticity problems involving the interaction between dislocations and cracks plays a fundamental role in many practical and theoretical applications. Although elasticity problems involving dislocation or cracks in quasi-crystals have been investigated in many papers, the analysis is limited to a singl…
This work describes the sequence of transformations and their reaction kinetics during the oxidation of olivine in air at high temperature. A natural olivine sample from the layered series of the Ivrea-Verbano igneous complex (Western Alps, Italy) was heated in the temperature range 25-1300 °C in air and investigated…
Abstract Poly(butylene terephthalate) (PBT)/poly(ethylene‐octene) (PEO) blends containing 1.0 wt% epoxy and from 0 to 30 wt% PEO were obtained by extrusion and injection molding. The blends were composed of two pure amorphous phases. The observed torque increases showed that epoxy reacted with PBT, leading to a fine a…
Abstract Nowadays, the process of maleic anhydride (MA) grafting and the application of MA‐grafted polyolefins are viewed as mature technologies. The chemistry and technology of modifying apolar polyolefins with the polar and reactive MA either in solution or in the melt were already explored as far back as the 1950s.…
ABSTRACT: The effects of water and glycerol on the molecular mobility of a soy‐protein isolate (SPI)‐based film were investigated using 1 H nuclear magnetic resonance (NMR). SPI‐films were prepared with different glycerol contents and equilibrated to various levels of water activity (a w ). The distributed transverse…
Abstract Poly(propylene)/clay nanocomposites were prepared by melt intercalation, using pristine montmorillonite (MMT), hexadecyl trimethyl ammonium bromide (C16), poly(propylene) (PP) and maleic acid (MA) modified PP (MAPP), The nanocomposites structure is demonstrated using X‐ray diffraction (XRD) and high resolutio…
Fast 30 Jahre nach der theoretischen Vorhersage wurde eine stabile und gut charakterisierte Verbindung synthetisiert, in der Tetrathiafulvalen- und Tetracyanchinodimethan-Einheiten kovalent verknüpft sind (1, siehe Schema). Die extrem kleine HOMO-LUMO-Lücke von 1 (0.17 eV) ermöglicht erstmals, einen thermisch angeregt…
The opening roller, which is one of the three most important items in the OE rotor spinning system, influences yarn quality and spinning performance. In addition to the raw materials, roller speed and type are critical. In this work, seven different polyester/waste (cotton noil, recycled fibers, flat waste, etc.) roto…
Abstract From a long time, the traditional source of collagen has been mammals wastes, mainly bovine and porcine skins and bones. This study undertakes a comparative analysis of the viscoelastic behaviour and the structural properties of gelatin gels from both mammalian and fish origins. All the rheological measuremen…
This article reports the first perbromination of β-pyrrole and meso-phenyl groups of the 5,10,15,20-tetrakis(3',5'-dimethoxyphenyl)porphinato copper(II) to generate highly brominated porphyrin, 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(2',6'-dibromo-3',5'-dimethoxyphenyl)-porphinato copper(II), CuT (3',5'- DMP…
Stearoyl-CoA desaturase (SCD) is an integral membrane protein of the endoplasmic reticulum that is rapidly and selectively degraded when isolated liver microsomes are incubated at 37 degrees C. We previously reported the purification of a 90-kDa microsomal protein with SCD protease activity and characterized the inhib…
A novel azobenzene compound bearing a short poly(ethylene glycol) methyl ether side chain, N-methyl-N-{4-[(E)-(4-nitrophenyl)diazenyl]phenyl}-N-(3,6,9,12,15,18,21,24-octaoxapentacos-1-yl)amine (RED-PEGM-8) was synthesized and characterized. RED-PEGM-8 exhibits a thermal behavior similar to that of Disperse Red-1; howe…
Reducing the high gas permeability of plastic packaging is of serious concern for a variety of applications in food packaging and microelectronics arena. In the development of high altitude scientific balloons, the potential for unmanned mission success is critically related to the improvement in helium barrier capabi…