Materials Literature
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Dissipative particle dynamics is a model of multi-phase fluid flows described by a system of stochastic differential equations. We consider the problem of N particles evolving on the one-dimensional periodic domain of length L and, if the density of particles is large, prove geometric convergence to a unique invariant…
A manufacturable, broadband, broad-angle antireflection (AR) coating for the visible (13 designs submitted) and a minimum-shift immersed short-pass filter (12 designs submitted) were the subjects of the design contest held in conjunction with the 2004 Optical Interference Coatings topical meeting of the Optical Societ…
Purpose To examine a simple testing method of measuring the force to pull a fabric through a series of parallel pins to determine the fabric softness property. Design/methodology/approach A testing system was setup for fabric pulling force measurements and the testing parameters were experimentally determined. The spe…
Glasses with the nominal compositions SrFe 12 O 19 + n Na 2 Sr 2 B 4 O 9 ( n = 4, 6, 8, 10) and SrFe 12 O 19 + 6Na 2 Sr 3 B 4 O 10 were prepared via rapid quenching of oxide melts and were then heat-treated between 500 and 800°C in order to produce glass-ceramics containing fine SrFe 12 O 19 particles. The materials w…
A single phase hexagonal close packed Zircaloy 2 was cold deformed to different reductions by laboratory rolling. Systematic characterisations of the structural developments were carried out. Bulk texture developments were gradual, strongest developments being noticed at the highest strain. Although formation of well…
PALINOLOGY OF LOWER PERMIAN AT THE DCLS-24 WELL (SAN GREGORIO FORMATION), CERRO LARGO DEPARTMENT, URUGUAY. PART 1: SPORES, ALGAE, PRASYNOPHYCEAE, AND ACRITARCHS. The palynological con- tents of four samples of the borehole DCLS24 (made by DINAMIGE) are analysed. Their lithology con- sists of black laminated clay forme…
Abstract The regional distribution, mineralogy, petrology and chemistry of the detrital and authigenic clay minerals associated with the Permo-Triassic strata (excluding the Rotliegend: see Ziegler, 2006; this volume), of the onshore and offshore regions of the British Isles are reviewed within their stratigraphical f…
Abstract Persulfurierte Arene sind zwar schon seit etwa 50 Jahren bekannt, ihre Chemie ist aber trotz der einfachen und effizienten Synthesen unter milden Bedingungen nur unzureichend untersucht. Ihre Eigenschaften (Redoxpotentiale, UV/Vis‐Absorption, Leitfähigkeit, nichtlineare optische Eigenschaften) sind einerseits…
Four kinds of Li and Co codoped ZnO (LCZO) thin films have been prepared by a sol-gel process technique. X-ray diffraction results revealed that the LCZO thin films possess single ZnO wurtzite structure and c-axis preferred orientation, and Li and Co ions substitute for the Zn sites without changing the wurtzite struc…
In this research, a new method is used for grading of yarn appearance based on yarn images of ASTM standard (section D 2255), by using an image processing technique and an artificial intelligence technique. In this method, grading of yarn appearance is based on computer vision and analyzing the images of standard pict…
The natural outdoor ageing of thick plates of isotactic polypropylene is investigated. Different techniques (infrared spectroscopy, thermal analysis, scanning electron microscopy, and mechanical tests) are used in order to obtain a comprehensive view of the modifications occurring during the environmental ageing. The…
PROTECTION OF INDUSTRIAL, MILITARY AND CIVIL ENGINEERING STRUCTURES AGAINST IMPACT LOADINGS HAVE GAINED A LOT OF ATTENTION, SPECIALLY AFTER THE 9/11 TERRORIST ATTACKS. AN ECONOMICAL AND VIABLE OPTION TO CONVENTIONAL AND HIGH COST BALLISTIC MATERIALS IS THE USE OF FIBER GLASS/EPOXY COMPOSITES, BUT FOR IMPACT APPLICATIO…
The thermal decomposition of the magnesium oxalate dihydrate in a static air atmosphere was investigated by TG-DTG techniques. The intermediate and residue of each decomposition were identified from their TG curve. The kinetic triplet, the activation energy E, the pre-exponential factor A and the mechanism functions f…
Abstract Summary: In order to have better insight into the polymer specifics of the dynamic glass transition molecular dynamics (MD) computer simulations of three glass‐formers have been carried out: low‐molecular‐weight isopropylbenzene (iPB), brittle atactic polystyrene (PS) and tough bisphenol A polycarbonate (PC).…
The crystal structure of the new barium borate Ba 5 (BO 3 ) 2 (B 2 O 5 ) is established ( R = 0.0436). Single crystals were grown by spontaneous crystallization in the BaO-B 2 O 3 -Na 2 O system using the flux method. This compound crystallizes in the orthorhombic system, sp. gr. P 2 1 2 1 2 1 ; the unit-cell paramete…
Neutron diffraction provides a direct probe for the ordering of spins from unpaired electrons in materials with magnetic properties. The ordering of the spins can be modeled in many cases by adding spin directions to standard crystallographic models. This requires, however, that crystallographic space groups be extend…
The pitting corrosion of Cr18Mn12N and Cr18Ni9 steels in halide solutions (F−, Cl−, Br− and I−) has been investigated. The study involved cyclic potentiodynamic polarisation tests with subsequent examination of the specimens by both optical and scanning electron microscopy. Values of the critical concentrations of hal…
Abstract The strong hysteresis (tan δ) temperature dependence observed in filled compounds containing functional polymers was investigated by studying the individual effect of filler-filler (F-F) and polymer-filler interactions (P-F). Silica filled compounds were prepared by adding n -octyl-triethoxyl or mercatopropyl…
Furaneol, a key aroma compound found in strawberry, pineapple, and processed foodstuffs, has been known to possess various biological activities on animal models. In this study, the antimicrobial effects of furaneol against human pathogenic microorganisms were investigated. The results indicated that furaneol displaye…
CuO nanowires were grown on brown-oxide-coated Cu films on Si substrates by conductive heating in air and their field emission characteristics were investigated. High resolution scanning electron microscopy showed that the CuO nanowires grew perpendicularly to the substrate, and their length and radius could be contro…