Materials Literature
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The paper studies the effect of the Weibull shape parameter β and of conductor temperature on the reduction of breakdown voltage with cable length in the enlargement from test (small size) HVDC cables to power (full-size) HVDC cables for some typical extruded dielectrics, each characterized by the relevant temperature…
In this research paper, synthesis of Gum tragacanth-acrylic acid based hydrogels using KPS-ascorbic acid and glutaraldehyde as an initiatorcrosslinker via free radical polymerization technique was carried out. Morphological difference was observed using Scanning Electron Microscopy (SEM). Electrical stimulus studies o…
Al2O3-matrices formed in H2SO4 are electrolytically colored in a CoSO4 solution. The absorbance spectral characteristics are recorded in the wavelength range 380-750 nm. The obtained colored anodic films are in the light grey-grey-black hue. The influence of the coloring time, the type of Al alloy and the surface trea…
The most conventional way for polymerization of acrylic acid on different substrates is using RF devices and introducing of other devices is under way. In this work we have a new study on formation of polymer Acrylic Acid using APF plasma focus device. The formation of plasma polymer acrylic acid is discussed using re…
Abstract- The modifications in structural and optical properties by incorporating rare earth oxide in polymethylmethacrylate (PMMA) matrix may open up the possibility of the development of smart tunable laser materials. In the present work, neodymium oxide is embedded in synthesized PMMA matrix by chemical doping proc…
Effect of magnetic field on the TTT diagram of a successive γ→ε′→α′ isothermal martensitic transformation in a solution-treated SUS304L stainless steel has been investigated. The TTT diagram corresponding to 0.5 vol.% transformation of the α′ martensite induced in the ε′ phase shows a C-curve under a magnetic field (0…
A new alternative method for the synthesis of calix[4]resorcinarenes has been shown. The optimal parameters for obtaining a C-tetramethylcalix[4]resorcinarene as a representative of the class of calix[4]resorcinarenes have been determined by varying the reaction conditions. It has been demonstrated that cyclic product…
As a large family of hydrolases, GTPases are widespread in cells and play the very important biological function of hydrolyzing GTP into GDP and inorganic phosphate through binding with it. GTPases are involved in cell cycle regulation, protein synthesis, and protein transportation. Chaperones can facilitate the foldi…
A range of supported gold catalysts was prepared by ion exchange, varying many of the preparation variables, including concentration in the precursor solution, washing procedure, as well as drying and calcination procedures. These catalysts have been characterized extensively. TEM images show essentially the same crys…
Los compuestos dímeros 3-oxi-(bis)-2-propanol, 2-(2-hidroxipropoxi)-propanol y 2-oxi-(bis)-propanol fueron obtenidos de la reacción de descomposición térmica del 1,2-propanodiol, realizada a 573.15 K y a su presión de vapor, utilizando un sistema de reacción a microescala, Los dímeros resultaron ser isómeros y fueron…
Samples of experimental tape yarns of different width, linear density, and composition data, i.e. composed from blends of polyolefins, namely polypropylene (PP) with linear lowdensity polyethylene (LLDPE) (1-octene comonomer), and additives were produced on an extruder E10 (Barmag Saurer Co., Germany). The yarns were…
The processes of steel corrosion in the aquatic environment were studied. The values of the level of protection from corrosion depending on the concentration of inhibitor at different conditions of aeration were established. A comparison of the efficiency of the developed phosphate inhibitors was carried out
The structure and dynamic in network-forming liquids has been investigated by mean of molecular dynamics simulation. Several models consisting of 1,998 or 2,000 atoms for silica and alumina liquids respectively were constructed under a wide pressure range and at temperature of 3,000 K. The local structure is analysed…
In this paper, we present the results of an experimental study of dyeing kinetics after finishing treatments. We have considered a woven fabric of which we have varied the structure, the number of warp and filling yarns per cm and the weight ratio of the fabric. The results of experimental study show that exhaustion r…
The aim of this study is to study the diffusion capacitance's efficiency of the n + -p-p + bifacial solar cell. The dependence of the efficiency of the diffusion capacitance on both the excess minority collection region in open circuit and short-circuit operating points of the solar cell has been itemised for varying…
We present a mathematical model, worked out on the basis of the law of binder composite material (CM) decomposition suggested by authors for numerical solution of the heat and mass transfer problems in the heat protective CM under conditions of aero-gas-dynamic heating. The model makes it possible not to consider hard…
Electrochemical impedance spectroscopy (EIS) was used to detect stress corrosion cracking (SCC) in stainless steel 304 alloy exposed to an aqueous environment at 120 °C. Stainless steel 304 alloy as u-bend was tested in the solution that contains 40 weight percent of magnesium chloride. U-bended samples were prepared…
Lors de la mise en forme des renforts de composites l’apparition des plissements fait parti des défauts les plus courants. Ces plissements sont fréquents en raison des très faibles raideurs en flexion dues aux mouvements relatifs entre les fibres constituant chaque mèche. Il est nécessaire de détecter leur apparition,…
Utilising a giant magnetostrictive material (GMM) rod as the sensitive element, a new type of magnetostrictive force sensor is studied. A Hall sensor with a stainless steel ring integrated in the sensor is used to measure the bias magnetic field intensity. In view of the hysteresis of GMM, a model for the sensor is es…
The powder of the micro Al and variant volume fractions of nano Al 2 O 3 were milled by a high energy planetary ball-mill. By milling, a homogenous distribution of nano Al 2 O 3 particles in the metal matrix were developed. Then the milled powder was cold compressed and sintered at 545°C for one hr. The mold and the s…