Materials Literature
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The 12%Cr type steels- 1Cr12Mo and 2Cr12NiMolW1V for turbine blades have been pilot produced by 30 t EAF+ VOD-ESR(2~3 t ingot)-825mm mill at Changcheng Special Steel.The results showed that as 1Cr12Mo steel analysis was C 0.13～0.15 ,Cr 11.70～11.90 ,Ni 0.46～0.55 ,Mo 0.34～0.47 and 2Cr12NiMolW1V steel analysis was C 0.22…
The effect of annealing temperature between 750 ℃ and 780 ℃ on structure of two TRIP steel - 0.2C-1.5Si- 1.5Mn and 0.2C-1.5Si-1.5Mn-0.5Cu has been studied by color metallograph method, X-ray diffraction and scanning electron micrograph. The test results showed that for the TRIP steel containing 0.5Cu,the retained aust…
The high nitrogen austenite stainless steel 1Cr22Mn15N-0. 12C,0.42Si,14.96Mn,0.026P,0.001S, 22.57Cr,0.56N has been produced using primary metal-1.84C,2.18Mn,24.88Cr by 20 t AOD refining - blowing O₂,N₂,adding electrolytc manganese,silicon iron and aluminium pig and adding NCr alloy to micro-adjusting composition of st…
: Natural Fibers have an outstanding potential as reinforcement in thermoplastics. The objectives of this experiment are to evaluate the suitability of producing Fiber composites using coconut coir fibers. This study deals with the preparation of coconut coir composites by using compression technique in which good int…
Poly( l -lactic acid) (PLLA) samples were prepared with different degrees of crystallinity, obtained during cooling from the melt at different scanning rates, and subjected to annealing below T g . For intermediate crystallinities two endothermic peaks assigned to enthalpy recovery could be detected by differential sc…
Some formulations of liposomal doxorubicin with intermediate rates of drug release have shown increased levels of toxicity in mice. Because antibody-mediated targeting of liposomal drugs influences the pharmacokinetics, mechanism of uptake, and selectivity of the associated drugs, we hypothesized that anti-CD19-mediat…
ABSTRACT: Chitosan (2%) ‐based or hydroxypropyl methylcellulose (HPMC) (1%) ‐based coatings were applied on fresh strawberries to evaluate their antifungal efficacies against Cladosporium sp. and Rhizopus sp. Potassium sorbate (PS) was also incorporated into coating formulas to evaluate any additional inhibitory effec…
Solid-acid fuel cells (SCFCs) utilize an anhydrous, nonpolymeric proton conducting electrolyte that can operate at slightly elevated temperatures. By supporting thin electrolyte membranes (25-36 μm), on porous stainless steel gas-diffusion electrodes, SAFCs with peak power densities as high as were obtained. Cells wer…
Shape memory alloys (SMAs) are a remarkable class of metals that can offer high strength, large energy dissipation through hysteretic behavior, extraordinary strain capacity (up to 8%) with full shape recovery to zero residual strain, and a high resistance to corrosion and fatigue—aspects that are all desirable from a…
In the last decade, interest in physical organogels has grown rapidly with the discovery and synthesis of a very large number of diverse molecules, which can gel organic solvents at low concentrations. The gelator molecules immobilise large volumes of liquid following their self-assembly into a variety of aggregates s…
We describe the growth of modulation-doped ZnSe/(Zn,Cd)Se quantum wells on (110) GaAs substrates. Unlike the well-known protocol for the epitaxy of ZnSe-based quantum structures on (001) GaAs, we find that the fabrication of quantum well structures on (110) GaAs requires significantly different growth conditions and s…
We provide an overview of progress on the exchange biasing of a ferromagnetic semiconductor (Ga1-xMnxAs) by proximity to an antiferromagnetic oxide layer (MnO). We present a detailed characterization study of the antiferromagnetic layer using Rutherford backscattering spectrometry, x-ray photoelectron spectroscopy, tr…
We investigate the possibility of trapping quasi-particles possessing spin degree of freedom in hybrid structures. The hybrid system we are considering here is composed of a semi-magnetic quantum well placed a few nanometers below a ferromagnetic micromagnet. We are interested in two different micromagnet shapes: cyli…
In this paper we present the results concerning the characterization of cuprous oxide thin films fabricated by chemical deposition and rapid photothermal processing (RPP) method. The growth kinetic effects and influence of the RPP temperature on the chemical deposited cuprous oxide thin films microstructures were inve…
Because of the large capital value of power transformers and their critical role in the electricity network, there is an increasing need for non-intrusive diagnostic and monitoring tools to assess their internal condition. The UHF technique is being applied increasingly to monitor partial discharges (PD) in power tran…
A facile process to prepare uniform dumbbell-shaped ZnO crystallites was presented. The evidence in this Article discovered a unique morphological effect on the UV-blocking property. The as-prepared ZnO crystallites were characterized by XRD, HRTEM, FESEM, UV-blocking, and Raman scattering spectra. Our tentative inves…
Metals and alloys are useful engineering materials. Their excellent engineering properties result in their widespread application in engineering designs. Alloys based on iron are ferrous alloys. Iron and its alloys, specifically steel, account for over 83% of the world’s production of total metals and alloys. This is…
The van Hove autocorrelation function of the impurity is obtained which is exact to the first order in the vacancy concentration. It is found that in the case of strong vacancy-impurity binding a singularity in the van Hove function corresponding to a resonant bound state develops on the unphysical sheet in the comple…
A putative dimethylallyltryptophan synthase gene, fgaPT2, was identified in the genome sequence of Aspergillus fumigatus. fgaPT2 was cloned and overexpressed in Saccharomyces cerevisiae. The protein FgaPT2 was purified to near homogeneity and characterized biochemically. This enzyme was found to convert L-tryptophan t…
A systematic study of the bulk and surface geometrical and electronic properties of a series of transition-metal carbides (TMC with TM = Ti, V, Zr, Nb, Mo, Hf, Ta, and W) by first-principles methods is presented. It is shown that in these materials the chemical bonding is strongly covalent, the cohesive energies being…