Materials Literature
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Abstract The current state of the lillianite homologous series is presented, with its two branches − the lillianite branch of the predominantly Pb-Bi-Ag sulfosalts and the andorite branch of predominantly Pb-Sb-Ag sulfosalts. Both the natural and synthetic members are discussed, especially from the structural and comp…
The dielectric behavior of an insulating material is commonly characterized by exposing its surface to a DC corona discharge for relatively short duration and then recording the decay of the electric potential Vs at its surface, Vs = f(t). The representation of the surface potential decay (SPD) by using tdVs/dt = f(lo…
Additive manufacturing processes allow freeform fabrication of the physical representation of a three-dimensional computer-aided design (CAD) data model. This area has been expanding rapidly over the last 20 years. It includes several techniques such as selective laser sintering and stereolithography. The range of mat…
Caralluma species have been reported for various traditional claims; the scientific data for possible activities have not yet been studied thoroughly. However the toxicity of a plant has to be studied for further exploration of various biological activities. Extracts were studied for their toxicity by MTT and trypan b…
Broad-band near-ultraviolet (NUV)-excited and multicolor-emitting Gd 2 SiO 5:Ce 3+,Tb 3+,Eu 3+ phosphors were synthesized by solid-state reaction. The emission color of the phosphors can be tuned from blue (0.153, 0.091) to green (0.325, 0.495) and eventually to red (0595, 0.370) through efficient Ce 3+ → (Tb 3+ ) n →…
We study the influence of block copolymer (BCP) compatibilizers on the domain and interfacial characteristics of the equilibrium morphological structures of semiflexible polymer/solvent blends. Our study is motivated by the question of whether block copolymer compatibilizers can be used to influence the phase separati…
The aim of this work was to develop new chitosan nanospheres for the delivery of 5-fluorouracil (5-FU). Drug loaded nanospheres were prepared using a technique derived from a combination of coacervation and emulsion droplet coalescence methods. The size and morphology of nanospheres were characterized by laser light s…
<div class="section abstract"><div class="htmlview paragraph">A commercial three-way catalyst (TWC) was evaluated for ammonia (NH<sub>3</sub>) generation on a 2.0-liter BMW lean burn gasoline direct injection engine as a component in a passive ammonia selective catalytic reduction (SCR) system.…
Samples prepared from steels F82H and EUROFER97 were irradiated with 20 MeV W ions at 300 K to 0.54 displacements per atom at the damage peak. Damaged and undamaged samples were exposed at elevated temperatures both to deuterium plasma at ion energies of 60 and 200 eV to a fluence of ≈10 26 D m −2 and to D 2 gas at a…
The critical conditions have been calculated for the generation of circular prismatic loops of misfit dislocations at the interfaces in spherically symmetric composite core-shell nanoparticles. It has been shown that the formation of these loops becomes energetically favorable if the misfit parameter exceeds a critica…
In this study diamond like carbon (DLC) coatings with Si interlayers were deposited on 316L stainless steel with varying gas pressure and substrate bias voltage using plasma enhanced chemical vapor deposition (PECVD) technology. Coating and interlayer thickness values were determined using X-ray photoelectron spectros…
We report the preparation, thermal and micro/nanomechanical behavior of poly (vinylidine diflouride) (PVDF)/multiwalled carbon nanotube (MWCNT) nanocomposites. It has been found that the addition of MWCNT considerably enhances the β-phase formation, thermal and mechanical properties of PVDF. Atomic force microscope (A…
Water oxidation is the "bottleneck" of artificial photosynthesis on the way to clean and sustainable solar fuels production. Although spinel-type Co3 O4 keeps attracting considerable research interest as a robust and low-cost water oxidation catalyst (WOC), full control over its manifold performance parameters remains…
This paper presents a self-consistent dynamic two-arc model predicting the behavior of DC arcs on ice-covered station post insulators. This model makes it possible to determine the minimum flashover voltage (VMF) as well as some characteristics of the discharge, including temporal evolution of leakage current, arc cha…
Net versus gross erosion of high-Z materials in the divertor of DIII-D, Rudakov, D L, Stangeby, P C, Wampler, W R, Brooks, J N, Brooks, N H, Elder, J D, Hassanein, A, Leonard, A W, McLean, A G, Moyer, R A, Sizyuk, T, Watkins, J G, Wong, C P C
Creation of synthetic catalysts with enzyme-like behavior is challenging despite strong interest in such systems. Extraction of tetrachloroaurate into the hydrophilic core of an interfacially cross-linked reverse micelle (ICRM) produced an artificial "metalloenzyme" with highly unusual catalytic properties. The ICRM p…
The crystal structure, piezoelectric and magnetic properties of the Bi1 − x La x FeO3 solid-solution system near the structural transition between the rhombohedral and orthorhombic phases (0.15 ≤ x ≤ 0.2) have been investigated. The regions of existence of the polar rhombohedral and orthorhombic phases have been deter…
ABSTRACT The effects of epoxidized natural rubber (ENR‐50) and processing parameters on the properties of natural rubber/ethylene–propylene–diene rubber (NR/EPDM; 70 : 30 phr) blends were studied. The compounds were prepared by melt compounding method. Using response surface methodology of two‐level full factorial, th…
Deuterium retention in tungsten films deposited on polycrystalline bulk tungsten substrates was investigated and compared with deuterium retention in W films deposited on silicon and in polycrystalline bulk W alone. The structure of the deposited films was investigated by x-ray diffraction and scanning electron micros…
Using first-principles simulations, we study the temperature- and pressure-dependent adsorption reaction of water on the flat (111) and (211) and (221) stepped surfaces of uranium dioxide. Our calculations are based on the density functional theory (DFT) corrected for on-site Coulomb interactions (DFT+ U ) for describ…