Materials Literature
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Principle and test experience of the Oxide Pyro-Process being developed at Research Institute of Atomic Reactors (RIAR, Russia) to process Fast Breeder Reactors spent MOX fuels were reviewed. Attention was paid to the thermodynamics and kinetics of fundamental chemical reactions and to the electrochemical properties o…
This report presents the clinical results three months after application of minocycline microspheres as an adjunct to mechanical treatment of incipient peri-implant infections compared to adjunctive treatment employing 1% chlorhexidine gel application. Sixteen patients in the minocycline group and 14 in the chlorhexid…
Antiferromagnetic resonance in single crystals of rhombohedral gadolinium ferroborate GdFe 3 (BO 3 ) 4 was studied. The frequency-field dependences of antiferromagnetic resonance over the frequency range 26–70 GHz and the temperature dependences of resonance parameters for magnetic fields oriented along the crystal ax…
Abstract Nine‐ and 27‐armed dendrimers with a peroxophosphotungstate core were synthesized by an ionic‐bonding approach and used as air‐stable, recoverable catalysts for oxidation reactions using hydrogen peroxide.
Abstract Highly porous, open‐cell polymers [poly(HIPE)] were prepared by polymerizing the monomers in the continuous phase (∼ 10%) of high internal phase emulsions (HIPE). This paper discusses using poly(HIPE) to remove bromoform from an aqueous solution through sorption, a combination of adsorption and absorption. Th…
(REE,Y) phosphates were synthesized in a 1 atm furnace by ß ux-growth methods involving Pb-free ß uxes. Microcrystalline (REE,Y) phosphate was precipitated from a solution of (REE,Y) chlorides or nitrates plus ammonium dihydrogen phosphate, and mixed with a M 2 CO 3 (M = Li or Na)-MoO 3 flux (75:25:2 molar ratio M 2 C…
A new, stepwise synthesis of calix[4]phyrins is described. It relies on the condensation of a ketone with pyrrole to form a dipyrromethane containing a quaternary carbon center that is subsequently condensed with an aromatic aldehyde. This methodology, in contrast to the previous rational approach described by this gr…
The structural gene for L-lactate dehydrogenase (LDH) (EC.1.1.1.27) from Clostridium thermocellum 27405 was cloned in Escherichia coli by screening the Lambda Zap II phage library of C. thermocellum genomic DNA. In one positive clone, an open reading frame of 948 base pairs corresponded to C. thermocellum ldh gene enc…
The competition to deliver ultra low emitting vehicles at a reasonable cost is driving the automotive industry to invest significant manpower and test lab resources in the design optimization of increasingly complex exhaust aftertreatment systems. Optimization can no longer be based on traditional approaches, which ar…
Abstract This report describes the thermal decomposition behavior and the formation to investigate the flame‐retardant mechanism of organic metal salt in polycarbonate. Moreover, the flame retardancy of the polycarbonate with the addition of various kinds of organic metal salt was evaluated, and the difference in flam…
A new route to the synthesis of 4-chloro-5-alkyl-phthalonitrile derivatives was shown by the displacement reaction of 4,5-dichloro-phthalonitrile and diethylmalonate, a CH -acidic precursor, in the presence of K 2 CO 3 . Cyclotetramerization of 1-chloro-3,4-dicyano-6-(1,1-dicarbethoxy-methyl)benzene and the metal salt…
Continuous carbon nanotube composite fibers having record energy‐to‐break (toughness) are reported. These fibers have been employed in the fabrication of lightweight fiber supercapacitors, which can be woven or sewn into fabrics and, therefore, be potentially considered as components for electronic textiles. Moreover,…
Abstract In this study an attempt was made to improve the rebound resilience and to decrease the density of ethylene‐vinyl acetate copolymer (EVA) foam. For this purpose, EVA was blended with natural rubber (NR), and EVA/NR blends were foamed at 155°C, 160°C, and 165°C. To investigate the correlation between crosslink…
Electrochemical and spectroelectrochemical studies are presented for nine copper corroles with electron-withdrawing or electron-donating substituents on the three meso-phenyl rings of the compounds or on the eight β-pyrrole positions of the macrocycle. Up to three reversible oxidations can be seen for each Cu (III) co…
Abstract Rice straw was employed for the preparation of lignocellulosic‐poly(vinyl chloride) (PVC) composites. The effect of pretreatment of rice straw, concentration of PVC, pressure as well as pressing temperature on the mechanical properties and water absorption was studied. Also, the effect of lignin as coupling a…
The degradation of electrical insulation in transformers is traced to thermoelectric processes. Existence of localized hot regions due to thermal insulating properties of electrical insulation would cause thermal runaway around these regions. In an earlier paper , the authors presented analytical methods for estimatin…
Integrally bladed rotor disks are used to an increasing extent in low-pressure compressors (LPC) and high-pressure compressors (HPC) of aero engines. These bladed disks are referred to as blisks. One of the objectives pursued under the EU sponsored AWFORS project is to test laser cladding for its suitability to restor…
We experimentally and theoretically consider highly condensed planar brushes made of charged polymers. Using X-ray reflectivity on polyelectrolytes that are anchored at the water−air interface, it is shown that such strongly stretched brushes show a slight but detectable height variation upon lateral compression. This…
A photosensitive semi-alicyclic poly(benzoxazole) based on poly( o -hydroxy amide) containing adamantyl units ( PAHA ) and 1,3,5-tris[(2-vinyloxy)ethoxy]benzene (TVEB) as an acidolytic de-cross-linker and a photoacid generator, diphenyliodonium 9,10-dimethoxyanthracene-2-sufonate (DIAS), has been developed. PAHA with…
Mycobacteria are intracellular pathogens that invade and reside inside macrophages. There has been a rapid resurgence in infections caused by the genus mycobacteria. Chemotherapy of mycobacterial infections is prolonged, hepatotoxic and very often inadequate in achieving optimal drug concentrations inside the cells. R…