Materials Literature
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In the first part of this paper, thermally induced polarization and phase distortions of a laser beam in cubic ceramics were calculated considering the specific features of photoelastic properties of 23 and m3 crystal classes. Here we use these quantities to calculate Strehl ratio and the integral of overlapping of th…
Abstract A subsurface safety valve is used to shut in a well automatically, if the wellhead equipment or other surface production equipment fails. It is almost always installed as a vital component on the completion. In many industrial systems, scale formation causes significant problems, not when it precipitates in b…
A simple, low cost and reproducible way of fabricating solid state Schottky junction solar cells utilizing non-stoichiometric PbO x films is discussed for the first time. A high work function metal alloy of Au-Pd was used to realize the non linear junction characteristic. We found a noticeable difference in the perfor…
The paper is devoted to the development and study of solar-blind and visible-blind photodetectors. We report on the spectral characteristics of the ultraviolet photodetectors based on Shottky barrier to the epitaxial layers of the n-Al x Ga 1-x N solid solutions. The use of Schottky barrier photodiodes is advantageous…
Abstract Prediction of perforating gunshock loads and the associated risk of tool damage is very important because of the high cost of nonproductive time associated with fishing jobs, particularly for deep-water wells. We have examined real examples of gunshock damage to determine how these incidents could have been p…
The facile generation of hierarchical CdS films and their accompanying application comparison as efficient photocatalytic electrodes toward water splitting were successfully achieved in this study. Three hierarchical CdS films, including nanoparticle packing film (CdS(P)), neat film (CdS(N)) and homojunction film (CdS…
A systematic study of the angular and temperature dependencies of the ferromagnetic resonance (FMR) of manganese germanide ${\mathrm{Mn}}_{5}{\mathrm{Ge}}_{3}$ grown on Ge(111) by solid phase epitaxy is reported. The FMR measurements performed in the out-of-plane geometry show that an out-of-plane anisotropy contribut…
Multifunctional nanocomposites of Fe3O4-graphene-Au for repeated use in simultaneous adsorption, in situ SERS detection and catalytic reduction of 4-nitrophenol in water, Chen, Fenghua, Wang, Yongwei, Chen, Qingtao, Han, Lifeng, Chen, Zhijun, Fang, Shaoming
A ratiometric fluorescent metal ion sensor based on the mechanism of fluorescence resonance energy transfer between 15-crown-5-ether capped CdSe/ZnS quantum dots and 15-crown-5-ether attached rhodamine B.
Reactions of [MoO2(acac)2] (acac(-) = acetylacetonate) with the potential N2O-donor 5,5-membered fused chelate rings forming Schiff bases 2-(2-pyridylaldimine)ethanol (HL(1)) and 4/5-R-2-(2-pyridylaldimine)phenols (HL(n); n = 2-5 for R = H, 4-Cl, 4-Me and 5-Me, respectively) lead to the facile formation of racemic com…
Composites of polypropylene filled with carbon black (PP/CB composite) at different concentrations were prepared by melt mixing followed by compression molding. The dependence of electrical resistance on the filler mass fraction was experimentally received. It was shown that the received dependence had the threshold c…
Background: The dispersed phase volume fraction plays key role in oil-in-water emulsion stability by different mechanisms like partial flocculation, depletion flocculation and bridging flocculation. Since the mentioned mechanism is affected by emulsifier concentration presented in system, the major aim of this study w…
Two methods of pulsed DC magnetron sputtering deposition have been used to form high rate, hydrogen-free crystalline silicon layers. The first method is in situ crystalline silicon deposition. The second method is high rate amorphous silicon deposition followed by an anneal to induce crystallization. Over 20 μm thick…
Horseradish peroxidase-mediated preparation of redox-responsive hydrogels composed of thiolated poly(ethylene glycol) and gelatin allowed the proliferation of cells on the gel and the harvest as a viable cell sheet.
Ray effects through two- and three-dimensional isotropically scattering, participating media are investigated using four ordinates methods: discrete ordinates, using a classical quadrature scheme and a refined azimuthal discretization around the azimuthal angle endpoints; and finite volume, with and without refined az…
A 3D control-volume based finite-difference model has been developed to simulate coupled turbulent melt flow and solidification phenomena for a semi-continuous direct chill slab casting of an aluminum alloy (AA-1050). The model considered an open-top melt delivery system for a hot-top mold. The model was verified with…
In this paper we report on the suitability of Ho3+:LiLuF4 and Ho3+:LaF3 as active media for solid state lasers emitting in the green spectral region. The ground state absorption spectra were measured and employed to calculate the emission cross section spectra via the reciprocity method. These allowed to derive the ga…
Abstract The polyurethane (PU) membranes with temperature and pH double sensitivities for water permeation were designed and prepared from a two‐step solution polymerization from the crystalline polycaprolactone diols (PCL), 4,4′‐diphenylmethane diisocyanate (MDI) and pH‐sensitive 2,2‐dimethylol propionic acid (DMPA),…
Abstract Calcium sulfate in the form of gypsum (CaSO4.2H2O) and anhydrite (CaSO4) is one of the most prevalent evaporite minerals typically found in the prolific middle Devonian carbonate rocks of the Western Canadian Sedimentary Basin (WCSB). Strong mineral acids, in particular hydrochloric acid (HCl), are employed t…
A combination of diagnostic and therapeutic ultrasound (US) techniques may be able to provide the basis of specific therapeutic protocols, particularly for the treatment of tumors. Nanotechnology may aid the progression towards the use of US for tumor diagnosis and targeted therapy. The current study investigated in v…