Materials Literature
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The experimentally found phenomenon of self-focusing of an electric field and the concentration of ions near the poles of an ion-selective granule in an electrolyte solution under the action of an external electric field is theoretically justified. An asymptotic solution of the problem is obtained, and it is shown tha…
Alumina has been widely used as a support in catalysis process which owing to its extremely thermal and mechanical stability, high surface area, large pore size and pore volume. The aim of this study was to synthesize calcium oxide-supported basic alumina catalysts (CaO/Al 2 O 3 ) by impregnation method and to charact…
In this work, two Polynomial Chaos (PC) surrogates were generated to reproduce Monte Carlo (MC) molecular simulation results of the canonical (single-phase) and the NVT-Gibbs (two-phase) ensembles for a system of normalized structureless Lennard-Jones (LJ) particles. The main advantage of such surrogates, once generat…
This paper explores a fundamental connection between ductility and domain size in metallic solids under extreme conditions of cryogenic temperatures and strain rates (10 8 s -1 ). A series of novel experiments, backed by multiscale modelling and transmission electron microscopy (TEM) analysis, are presented that invol…
An ambipolar organic field-effect transistor (OFET) based on poly(diketopyrrolopyrrole-terthiophene) (PDPPHD-T3) is shown by P. Sonar, H. Haick, and co-workers on page 4012 to sensitively detect xylene isomers at low to 40 ppm level in multiple sensing features. Combined with pattern-recognition algorithms, a sole amb…
Abstract The deprotection of two bicyclic hexaaza‐dithioether macrocycles 1 and 2 containing four (or six) N‐bound 2‐methoxyethyl substituents was achieved in good yields utilizing Li or Na/naphthalene in THF as the reagent. The ability of the resulting hexaaza‐dithiophenolate macrocycles (H2L4 and H2L5) to act as mon…
Iridium hydride complexes are ubiquitous in Ir-catalyzed reactions as catalysts or critical intermediates and the cleavage or formation of Ir–H bonds are usually involved in these transformations. In this work the bond dissociation enthalpies and the hydride-generating heterolytic dissociation enthalpies of the Ir–H b…
Based on the research and development of electrochromism, its commercial applications have been realized in the areas of building windows, car rear-view mirrors and aircraft windows. In this paper, constructions, material category, working principles and characteristic requirements of electrochromic device were to des…
Electromagnetic metasurface with many special electromagnetic properties can be utilized to manipulate electromagnetic wave propagation and reflection. If the metasurfaces were designed for coding, random, phase discontinuities, perfect absorber and so on，they can manipulate the scattering or the reflection of electro…
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Fungal growth in leathers causes significant damages like stains, surface roughness and loss of physical-mechanical resistance. This raises the need to develop control strategies by the use of antimicrobial agents. Considering the improving processes with regard to the use of antimicrobial agents added in skins and le…
This paper details an effort to study the principle and the investigate feasibility of measuring dynamic thickness of fabric under tension based on a comprehensive handle evaluation system for fabrics and yarns (CHES-FY), which was developed to evaluate multiple mechanical properties of fabrics and yarns by a pull-out…
In the present work, we have measured the radon gas concentration; effective dose and exhalation rate for some fertilizers samples, raw materials, triple super phosphate and single super phosphate by using alpha-emitters registrations that are emitted from radon gas in CR-39 nuclear track detector after irradiated wit…
An investigation was made of the structure and thermophysical properties of composites based on polyethylene terephthalate (PET) and montmorillonite clay modified with organomodifiers of different nature. A study was made of the effect of organoclays on the morphology and crystallisation processes of PET. It was estab…
Rice straw causes many environmental problems in different world countries. In Egypt, every year, rice str severe environmental pollution in terms of black clouds caused by burning process. In this study, Egyptian was used as a reinforcement material in polymer composites. Rice-straw/epoxy [RS/E] and glass-fiber/rice…
L'article se propose de montrer quels types de modèles sont requis pour comprendre, individuellement ou dans leurs interactions, les divers processus liés à la déformation du métal dans un laminoir, pour les optimiser, pour corriger les défauts afin de baisser les coûts. Pour ce faire, il examine les spécificités du p…
The three-Dimensional Ion Implantation technique (3DII) causes ions to collide with a solid surface in a perpendicular way regardless of the geometry of the solid (Khvesyuk & Tsygankov, 1997; Dougar-Jabon, Dulce-Moreno & Tsygankov, 2002). The steel AISI SAE 4140 has been used as substrate because of its wide use in th…
This study aims to investigate the availability of face to face warp knitted pile fabric as a durable carpet after reinforcing with needle punched polyester felt and natural latex.In the paper the effects of pile yarn count, silicone resin and tuft density on the performance of warp knitted carpets are tested and repo…
Evaporation of micro-liter drops from solid surfaces at room condition is mainly governed by diffusion. Therefore, there should be no difference between evaporation rate of sessile and pendant drops. However, some studies indicate a difference and explain the difference using buoyancy. The objective here is to reconci…
One of the largest volume applications of permanent magnet materials are loudspeaker systems. High performant loudspeakers can be obtained by using rare earth permanent magnets with a high residual flux density, as for instance NdFeB. Because such devices are produced in a very large quantity and because the rare eart…