Materials Literature
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Doped TiO2/ZrO2 films were obtained by Pulsed Laser Deposition method under different synthesis conditions. The onset of absorption spectra was red shifted for the films obtained in N-2 containing gas mixtures, while a broad absorption in visible was observed in the case of films deposited in CH4 atmosphere. The prese…
This second edition adds new insights into the field of biodegradable and renewable plastics. It describes novel approaches in products as well as processes that have been developed over the past seven years since this book was first published. Following the trend of the industry, more emphasis has been placed upon pl…
The KKR-CPA-LDA method was used to calculate the electronic and the magnetic structures of Fe2CrGa alloy. The results indicate that Fe2CrGa alloy prefers to crystallize in Hg2CuTi-type structure rather than L21 one. The analysis of density of states reveals that the intra-atomic exchange splitting affected by crystal…
The effect of high alumina cement (HAC) on some selected foundry properties of ant-hill clay was investigated. Pulverised clay, water and 5 to 40% HAC weight fractions were manually mixed, pressed and air dried at 110°C for twenty-four hours followed by firing in a kiln to 1100°C. For each property, four samples were…
The present paper reported the time,place,range,duration,the highest density of phytoplankton and community structure characteristics of 5 diatom water blooms in the middle and lower reach of the Hanjiang River.The results indicated that there is a worse trend for the occurrence of diatom water blooms from 1992-2000 i…
The fabrication, characterization, electric, dielectric and ac conductivity measurement of polythiophene and carbon nanotube (CNT) composite are described. The polythiophene (PTh) and polythiophene/ multiwalled carbon nanotube (PTh/MWCNT) composite are prepared chemically by oxidative polymerization of thiophene(Th).…
銅管の蟻の巣状腐食はギ酸や酢酸のような有機カルボン酸を含む湿った気相中でのみ生じると言われてきた．本研究では，液相中での銅管の蟻の巣状腐食を再現するため，ギ酸溶液中に銅管を28日間浸漬した．1，5，10，100，1000ppmギ酸溶液中に銅管を28日間浸漬したところ，蟻の巣状腐食が発生した．一方，10000 ppmのギ酸溶液に浸漬した銅管には全面腐食が発生した．ギ酸と硫酸イオンとが共存する溶液中において，蟻の巣状腐食の発生・進展が加速されることが明らかになった．
AbstracTitanium carbide (TiC) and molybdenum carbide (Mo2C) particles were selected to modify the hydrogen storage properties of magnesium hydride (MgH2). (MgH2+ 2 mol% TiC) and (MgH2+2 mol% Mo2C) mixtures were prepared using both cryogenic milling and high-energy ball milling. The morphology and crystallite structure…
Among the numerous nanosized drug delivery systems currently under investigation, carbon nanotubes (CNTs), regardless of being single or multiple-walled, offer several advantages and are considered as promising candidates for drug targeting. Despite the valuable potentials of CNTs in drug delivery, their toxicity stil…
Melt fragmentation, quenching and long term coolability in a deep pool of water under reactor vessel is employed as a severe accident (SA) mitigation strategy in several designs of light water reactors (LWR). Geometrical configuration of the debris bed is one of the factors which define if the decay heat can be remove…
Novel oxygen gas sensor based on gallium oxide thin film operated at high temperature from 700 0 C to 1100 0 C has been analyzed. Gallium oxide thin films have been deposited by sputtering method using a power target and their sensing properties, electrical sensitivity and response time have also been studied. Grain s…
Nano-size nickel Ferrites are used for a sensors applications for different gases. In the present work, synthesis of nano crystalline NiFe 2O4 and its characterization have been studied. NiFe 2O4 is prepared using co-precipitation method from the chemical reaction of solution of pure chloride of nickel and iron with s…
It is observed that by co-doping of Ce 3+ , the resulting nanoparticles assembled themselves into rod like structures. The n ature and concentration of dopants are found to play crucial role in tuning the morphology and electrical properties of nanostructures. The dielectric behaviour of Co and Fe doped and Ce co-dope…
A new method to measure mass attenuation coefficient of particles covering end point energies 0.318 to 2.28 MeV for elements H, C, O, Al, Cl, Cu and Ag from compounds and salts has been described. The measured mass attenuation coefficients of beta particles have been compared to the values given in previous work. A…
The paper describes the peculiarities of Ti Grade 4 structure evolution depending on a number of ECAP-Conform passes. Billets with a diameter of 12 mm were subjected to ECAP- Conform processing with a number of passes from 1 to 10 at a temperature of 200 m7. It has been shown that accumulation of strain that happens,…
In the present paper, the penetration experiments of tungsten-fiber/metallic-glass matrix composite material bullets into 45# steel targets are conducted by employing H25 artillery. In which, an experimental technique of sub-caliber penetration is constructed. The quasi static and dynamic behaviours of tungsten-fiber/…
The inhibition and the effect of temperature and concentration of trans-4-hydroxy-4′-stilbazole on the corrosion of mild steel in 1 M HCl solution was investigated by weight loss experiments at temperatures ranging from 303 to 343 K. The studied inhibitor concentrations were between M and M. The percentage inhibition…
Stimulus responsive supramolecular assemblies were constructed by decorating the surface of β-cyclodextrin vesicles (CDVs) with β-sheet forming oligopeptides. Three octapeptides were used to coat the CDVs: adamantane-(leu-glu)4 (1), adamantane-PEG4-(leu-glu)4 (2) and (adamantane-PEG4)2-(leu-glu)4 (3). The adamantane m…
The objective this work was to obtain bioplastics from mixtures of wheat gluten and glycerol by two different processes and evaluate their respective rheological properties. The mixtures and their respective bioplastics were obtained through direct batch mixing under approximately adiabatic and isothermal conditions.…
Time-temperature equivalence is a widely recognized property of many time-dependent material systems, where there is a clear predictive link relating the deformation response at a nominal temperature and a high strain-rate to an equivalent response at a depressed temperature and nominal strain-rate. It has been found…