Materials Literature
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In this article it is reviewed on enigmatic electrical and magnetic properties of La(Ba)MnO3 thin films, useful for tunable microwave filters. As-grown films have well separated insulating to metallic (Tp) and paramagnetic to ferromagnetic (Tc) transition temperatures, which can be understood from the phase separation…
1Oarai Research Center, Chiyoda Technol Corporation, 3681 Narita-cho, Oarai-machi, Higashi-ibaraki-gun, Ibaraki 311-1313, Japan 2Advanced Materials. Science Research and Development Center, Kanazawa Institute of Technology, 3-1 Yatsukaho, Hakusann-shi, Ishikawa 924-0838, Japan 3Nature Science, Kanazawa University, Kak…
The inhibition of corrosion of carbon steel in 120 ppm chloride solution by Sodium meta silicate (SMS) in the presence and absence of Zn2+ ions is studied. The tests performed to measure the efficiencies of these substances reveal that 150 ppm of SMS and 75 ppm of Zn2+ gives 82 % inhibition efficiency. Scanning probe…
We employ ab initio plane-wave pseudopotential density functional theory to calculate the coordinates， equilibrium lattice parameters，bulk modulus，shear modulus and elastic constant of PtN2，and those calculated results agree well with the other experimental data and the published theoretical data. The curve of volume…
The construction of metallic nanocrystalline (NC) samples by molecular dynamics simulation is investigated. Firstly, the initial NC aluminum and copper samples are assembled by Voronoi geometrical construction method, then the local minimized energy states of the samples are obtained by quenching (or conjugate gradien…
Recent developments from the cast 718Plus Metals Affordability Initiative (MAI) program will be presented and discussed. The objective of the program is to investigate and enable the use of 718Plus alloy in the form of investment castings by (1) increasing the allowable operating temperature by about 75F as compared w…
Commercial pure titanium (Cp-Ti) and titanium alloys are used on large scale in restorative dentistry due to their advantages as compared with other similar materials: chemical inertia, low density, high strength, high corrosion resistance in biological media and increased biocompatibility.The effect of fluoride and p…
We investigate the photo-induced creep behavior of a network polymer that can relax stress upon irradiation at particular wavelengths (Scott et al., 2006; Scott et al., 2005). The underlying mechanism is a photochemical-mediated structural rearrangement of the polymer network through polymer chain cleavage and reforma…
In this paper the cationic starch with high degree of substitution (HCS) is prepared with NaOH as alkali catalyst and 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CTA) as cationic reagent by using the semi-dry process. Then the prepared cationic starch with high degree of substitution is used to improve the p…
Cotton fiber is usually tested in bulk form utilizing a mass or beard of fibers to be presented to a test instrument for measurement. There are many reasons for this, not the least of which is that handling single cotton fibers is tedious and time consuming. Cotton breeders are being pushed to make decisions on which…
[zhu, feng; dong, shan; yang, guandong] chinese acad sci, state key lab superlattices & microstruct, inst semicond, beijing 100083, peoples r china
Monografijoje sprendžiamos plačiajuosčių lėtinimo įtaisų modeliavimo ir naudojimo problemos. Įtaisų analizei taikomi elektrodinaminis, daugialaidžių linijų ir skaitmeniniai – baigtinių skirtumų, baigtinių elementų ir integralinių lygčių (momentų) – metodai. Nagrinėjami specifiniai lėtinimo įtaisų naudojimo vėlinimui i…
Oxygen permeation property in Nd deficient was studied. The oxygen permeation rate increases with increasing Ga. Nd deficiency in is also useful for increasing the oxygen permeation rate. The improved oxygen permeation rate could be assigned to the increased amount of excess oxygen and stabilizing a tetragonal structu…
In this study, poly(methyl methacrylate) (PMMA) was treated with changing mixing ratios of and using oxyfluorination method for hydrophilic modification of PMMA film. For the characterizations of oxyfluorinated PMMA surface, contact angle, surface free energy, X-ray photoelectron spectroscopy (XPS) and optical transmi…
The processes of fast pyrolysis and low heating rate decomposition for GAP were studied by T-Jump/FTIR and in-situ pyrolysis-FTIR respectively.In T-Jump/FTIR technique,GAP was flash-pyrolyzed with heating rate of 1 000 ℃/s at the set temperature(600 ℃ and 1 000 ℃)and under different pressure N2 atmosphere.With the hel…
The paper reviews four flame retardant methods for polyacrylonitrile and its fiber,i.e.,polymer chemical reaction modification,blending,thermal oxidation and finishing.The advantages and disadvantages were presented with focuses on the development progress of polymer chemical reaction modification and blending methods…
The plant Leucas aspera is claimed to possess anti-inflammatory and anti-rheumatic potential by traditional practitioners. The aim of this study is to validate the traditional claim. The hydroalcoholic extract of aerial parts of L. aspera (HAELA) was orally tested at a dose of 100 mg/kg bodyweight for anti-arthritic e…
This paper deals with the evaluation of physical methods for the determination of the degree of crosslinking of ethylene vinylacetate (EVA) grades for embedding of photovoltaic (PV) cells. Various embedding films (Standard-Cure and Fast-Cure grades) were investigated. To obtain different degrees of cross-linking the l…
Diacetone acrylamide (DAAM) was derived from alkaline hydrolysis of 2-methyl4-oxo-N-[(1Z)-1(sulphooxy)prop-2-ene-1-ylidene]pentan-2-aminium as a precursor which the latter was prepared by condensation of acrylonitrile and acetone in sulphuric acid. Diacetone acrylamide was characterized by 1H NMR, FTIR and mass spectr…
In this paper, we present a systematic experimental study of effective optical linear refractive index and third-order optical nonlinear effective susceptibility of nano-porous silicon samples with various values of silicon volume fill fractions. The experimental results are in good agreement with the theoretical pred…