Materials Literature
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Abstract The object of this work is to assess the suitability of metallocene catalyzed linear low‐density polyethylenes for the rotational molding of foams and to link the material and processing conditions to cell morphology and part mechanical properties (flexural and compressive strength). Through adjustments to mo…
Zinc oxide (ZnO) nanoparticles coated with 1–5 wt% Bi 2 O 3 were prepared by precipitating a Bi(NO 3 ) 3 solution onto a ZnO precursor. Transmission electron microscopy showed that a homogeneous Bi 2 O 3 layer coated the surface of the ZnO nanoparticles and that the ZnO particle size was ∼30–50 nm. Scanning electron m…
Reactions designed to give Se6[Sb(OTeF5)6]2 by the reaction of Se2Br2, 4Se, and 2Ag[Sb(OTeF5)6] lead to products that include [Ag2(Se6)(SO2)2][Sb(OTeF5)6]2(1). The distorted cubic (Ag2Se6 2+) n consists of a Se6 molecule bicapped by two silver cations (local D3d sym.). Reactions of AgMX6 (M = As, Sb) with selenium in…
The TM1255 gene of Thermotoga maritima encodes an aspartate aminotransferase (AspC-1, EC 2.6.1.1), with a molecular weight of 42,287 Da (residues 1–377) and a calculated isoelectric point of 6.8. Aminotransferases contain a pyridoxal 5′-phosphate (PLP) cofactor and are involved in the degradation of most amino acids w…
The electrochemical behavior of compacts of micro-and nanodisperse diamond powders were studied by using model redox K 3 [Fe(CN) 6 ]-K 4 [Fe(CN) 6 ] and Ce(SO 4 ) 2 -Ce 2 (SO 4 ) 3 systems in aqueous electrolytes. The current-voltage curves for compacts of microdisperse diamonds and the kinetics of reactions on these…
Abstract Efficient synthetic strategies are described for the preparation of rodlike polyelectrolytes based on the intrinsically rigid poly( p ‐phenylene). Uncharged precursors were first prepared via the Suzuki coupling and then characterized by different methods of polymer analysis. Finally, they were transformed in…
The influence of the heating rate on the thermoluminescence (TL) emission induced by UV radiation in zirconium oxide has been investigated. Various heating rates from 2 to 30 K/s were used. Trap parameters, i.e. activation energy, E, pre-exponential factor, s, and the kinetics order, b, were also determined using the…
The methods for dispersing nanodiamond powders of different purity grades and preparing nanodiamond powder suspensions suitable for fractionation are analyzed. The main physicochemical properties of fractions separated from the synthesis products (blends) and purified nanodiamonds are investigated. It is found that th…
99.1% aluminium containing Al 8 Fe 2 Si precipitates located at grain boundaries, was deformed by ECA pressing. Evolution of the plastic flow was evaluated from the spatial distribution of precipitates characterized by Optical Microscopy. The theoretical models of the deformation, based on simple shear, fit with the e…
This paper reports a novel surface-enhanced Raman scattering (SERS)-active light waveguide method for ultrasensitive detection of a sample dissolved in a small volume of low refractive index liquid. The SERS-active light waveguide demonstrated in this study was constructed via the light-guiding silica capillary. The s…
For the improvement of the conversion efficiency of CdS/CdTe solar cells by applying the wavelength conversion properties, the spectroscopic studies of the fluorescent laser dye Rhodamine 6G (Rh6G)-doped into polyvinylbutyral (PVB) and polymethylmethacrylate (PMMA) were carried out. It was found that all the photolumi…
Abstract Based on advanced plasma deposition technology with both DC and RF plasmas DLR Stuttgart has developed a concept of a planar SOFC with consecutive deposition of all layers of a thin‐film cell onto a porous metallic substrate support. This concept is an alternative approach to conventionally used sintering tec…
A two-stage technology of compaction of ultrafine-dispersed diamonds (UDDs) is developed and successfully applied for ampoule-free sintering of dense UDD granules in lead under a pressure of up to 100 GPa. Standard strength tests of polycrystals (fractions 80/63, 125/80) thus obtained showed a wide spread in strength…
New, bent-core, polycatenar pyridine mesogens are described. Binding to silver(I) leads to complexes properly described as discotic.
Dye-like applications of antibiotics to silk produce infection-resistant materials for potential use in biomedical applications. Two antibiotics, doxycycline (doxy) and cipro floxacin (cipro), are applied under a variety of conditions to silk and to silk that has previously been hydrolyzed at 40°C for 20, 40, and 60 m…
Cambridge Structural Database (CSD) was screened in order to find intramolecular C−H···π interactions with a chelate ring of coordinated porphyrin. It was found 154 crystal structures with 244 intramolecular C−H···π interactions in transition metal complexes with derivatives of porphyrin. Comparison of interacting dis…
Abstract While existing solid oxide fuel cell (SOFC) technology has demonstrated much higher energy efficiency with minimal pollutant emission than the conventional technologies, the costs of the current SOFC systems are still prohibitive for broad commercialization. To be economically competitive, both the cost of ma…
Abstract The effect of neutron flux level is a longstanding concern for determining the applicability of test reactor data or high lead-factor surveillance data to the prediction of embrittlement in commercial reactor pressure vessels (RPV). However, as operating reactors reach higher fluences, the question of flux ef…
The effect of modifying detonation nanodiamond additives on the stress-strain properties of polymer nanocomposites is investigated using polysiloxane polyblock copolymers as an example. It is shown that the formation of a physical network of supramolecular structures (due to self-organization initiated by force fields…
The effect of chemical-mechanical modification (CMM) on the ζ potential and size distribution of nanodiamonds was studied. Results show a significant change in the functional groups on its surface after CMM treatment by the anionic surface modifier DN-10. The amount of hydroxyl groups decreases, and two peaks connecte…