Materials Literature
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In order to obtain the information about magnetic states of reentrant ferromagnet, SmMn2Ge2, we have studied the pressure effect on magnetocaloric properties by magnetization measurements under high pressures up to 1.2 GPa in the temperature range from 5 to 300 K. Using the Maxwell relation, we estimated the magnetic…
As Thermoelectric devices are getting cheaper and more powerful in cooling, these devices are getting more popular for electronics cooling applications. However, due to the additional heat production inside the thermoelectric device, the application of a TE-cooler might not always be appropriate. In some applications,…
A simple two-dimensional mathematical model capable of describing the interactions taking place in the bulk fluid and biofilm between sulfate reducing bacteria (SRB), substrates and biocide agents was used for the numerical evaluation of biocide treatment against SRB. The characteristics inherent to thick biofilms for…
The packing efficiency of granular materials is an important consideration in a variety of industrial settings. Here, the density relaxation problem is studied using three dimensional Monte Carlo simulations, which model the effect of regular taps applied to vessel having a planar floor filled with hard spheres. Resul…
Top level requirements and challenges for optical coatings in the latest generation of 193nm lithography optics are presented. Emphasis is placed on the influence of deposition geometry effects, lens element material, and deposition process on the optical properties of such coatings.
Anodic etching characteristics of n -type silicon in aqueous hydrofluoric acid HF ∕ C 2 H 5 OH ∕ H 2 O ∕ KIO 3 ( HF ∕ KIO 3 ) and HF ∕ C 2 H 5 OH ∕ H 2 O (HF) electrolytes are investigated using photoluminescence (PL), optical microscopy, scanning electron microscopy (SEM), and atomic force microscopy (AFM). The PL in…
In this article, we present a novel high-performance multi-layer resist (MLR) process that uses a spin-on carbon (SOC) hard mask (HM). In the process, a technique involving the implantation of ions into the SOC just after coating was employed. B, P, Ar, and As were implanted in order to compare the degrees of hardenin…
A hydroxyamide-containing tetracarboxylic dianhydride was synthesized from trimellitic anhydride chloride and bis(3-amino-4-hydroxyphenyl)sulfone. Poly(amic acid)s (PAAs) were prepared from this dianhydride with several diamines in N-methyl-2-pyrrolidone (NMP). The reflux of the PAA solutions at 160°C for 3 h allowed…
The polymer stabilization (PS) is an attractive technique because the physical property of liquid crystals (LCs) can be improved and furthermore the new characteristics may occur. In this paper, we offer a new type of PS-LC in which the photocure is done at a temperature where the LC medium is in the nematic phase und…
Different molecular weights of chitosan, N-deacetylated derivative of chitin acquired from supporting material of Crustacea, were treated on postharvest grape in order to investigate their influence on disease incidence and quality during storage of fruit. Higher molecular weights of chitosan enhanced storability of g…
Abstract — This study focuses on the manufacture of carbon nanotubes using the arc discharge method. Several independent variables were changed, such as the current (80 and 100 A), an atmosphere of open air or argon and the catalyst (no catalyst, Fe or a mixture of Fe/Co,Ni). Only one set of parameters yielded MWNTs,…
A Ni2P/SiO2 catalyst that is highly active for hydrodesulfurization (HDS) reaction was studied by in situ extended x‐ray absorption fine structure (EXAFS) under the real reaction conditions. The measurements were conducted at realistic conditions of high pressure (3 MPa) and high temperature (613 K) in the presence of…
Poly(ethylene glycol)methacrylate (PEGMA) was grafted onto poly(vinyl chloride) (PVC) tubes by pre-irradiation in presence of air using a gamma-ray source. The effects of monomer concentration, pre-irradiation dose from 5 to 150 kGy, dose rate, reaction time between 4 and 24 h, and reaction temperature were investigat…
Abstract- This research comprises a study of the effect of heat treatment on fatigue behavior of (A193-51T-B7) alloy steel. Two heat treatment processes were conducted, namely, annealing and quenching followed by tempering at 200 o C. All fatigue tests were carried out using a rotary bending machine with constant stre…
The Sanchez-Pomraning method to resolve the double heterogeneity problem in the MOC \ntransport calculation is described in detail. This method is founded on the collision probability method concepts which involves the collision and escape probabilities, and formally derived by using the statistical treatment of t…
International audience
高 MW 去乙酰壳多醣(CS ) 答案已经为蛋白质交货作为车辆被建议了。现在的工作的目的是调查潜在的用途 ofwater 可溶的去乙酰壳多醣(WSC ) 作为车辆装载并且交付蛋白质。有各种各样的形成的 WSC nanoparticles (WSC NP ) 与 pentasodiumtripolyphosphate (TPP ) 基于 WSC 的离子的冻结被准备阴离子。牛的血清白蛋白(BSA ) 被用作合并到 WSC nanoparticles 的模型蛋白质药。空白、装载 BSA 的 WSC nanoparticles 被检验并且决定与在 35 之间的直径有球形的形状—190 nm，和希腊语的第六个字母潜力 between35—4…
Recently, ship owners require saving cost of inspection and repair due to corrosion in crude oil tanks of oil tankers. There are two types of corrosion in crude oil tank, the general corrosion at upper deck plate and the pitting corrosion at bottom plate. On the basis of the results of field examinations on several VL…
The superfine boron powder was coated by aggradation method with AP using methanol or acetone as the solvent. The coating effect were characterized by FT-IR, heat analysis, atom force microscope, transmission electron microscope et al, and the influencs on the coating of the solvent, vaporized velocity and amido-silic…
For many decades, considerable efforts have been devoted to the development of new solvents for cellulose which are non-toxic and and do not cause derivatization of the solute. In recent years, it has been found that some types of ionic liquids are capable of dissolving cellulose. The structural differences between wo…