Materials Literature
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Corona is one of important problems in the design and operation of transmission lines. It was obtained through experiment and simulation that positive DC corona inception voltage and corona ion current under different air pressure and humidity conditions. Calculated results are in good agreement with experimental ones…
The constitutive models for plastic flow of metal materials under dynamic loading,such as explosive or impact loading,is very important in the impact dynamics,and its studies in recent decades have greatly promoted the development of shock physics,impact dynamics and material sciences,among others.In this paper,some i…
The distributions of the color and luminescence of diamond are reviewed in relation to its growth mechanism. A wide variety of color and luminescence have been reported, which are caused by point defects such as impurities. The color and luminescence are not uniform inside a crystal; they vary depending on growth sect…
X-ray diffraction (XRD) can provide useful information about the composition of an ore sample in terms of quantification of crystalline phases and also amorphous content. XRD is also a powerful technique for studying substitutional solid solutions that can affect mining productivity, such as determining lattice bound…
Abstract: A waste LiCl salt generated from an electrolytic reduction process of a spent oxide fuel could be in-corporated with zeolite A and a glass frit to form a glass-bonded zeolite waste form through blending of the waste LiCl salt with zeolite A, mixing it with the glass frit, and finally thermal treatment at 118…
Rigid open-celled polyurethane foam is the main type of core material in vacuum insulation panels (VIPs). The formulation and manufacturing process of the foam are experimentally analyzed, and the factors that affect cell structure and heat insulation performance are discussed. Vacuum level in VIPs is one of the most…
We have demonstrated that rod-coil molecules based on a tetra-p-phenylene rod and a poly(propylene oxide) coil self-assemble into an unprecedented body centered cubic micellar structure in the melt, through detailed morphological analysis by X-ray scattering and transmission electron microscopy experiments.
In this paper, we report on the performance of microwave phase shifters implemented on sol-gel derived Ba0.3Sr0.7TiO3(BST) thin films. Coplanar waveguide (CPW) phase shifters, loaded-line phase shifters, and reflection-type digital phase shifters have been realized on a single alumina substrate covered with a 300nm-th…
Alkali solution- and heat-treatments were employed to modify the surfaces of Ti-6Al-4V, Ti-40Nb-1Hf and Ti-30Nb-1Fe-1Hf alloys, and then the surface characteristics and the biocompatibility of the treated alloys were analyzed. The formation of porous surfaces that contain numerous nano-pores and irregular cracks, toge…
The wavelengths and radiative transition probabilities for the transitions 2p 5 3s3p LSJ 2p 5 3s 2 2 P 1/2,3/2 and 2p 5 3s3p LSJ 2p 6 3p 2 P 1/2,3/2 in Na atoms are calculated by using large scale configuration interaction approximation. The autoionization probabilities and electron impact excitation cross-sections fo…
HgTe nanocrystal-based thin-film transistors (TFTs) with Al2O3top-gate dielectrics were fabricated on glass substrates using sintered HgTe nanocrystals as the channel layers. To the best of our knowledge, this is the first report on the fabrication of nanocrystal-based TFTs on glass substrates. Colloidal HgTe nanocrys…
This study aimed to predict the hairiness of cotton/polyester blended rotor yarns using blend ratios and yarn count as predictor variables. A simplex lattice design with two replications at each design point was constructed to determine the combinations of mixture ratios of the fibre types. Cotton/polyester blended sl…
Multi-walled carbon nanotubes (MWCNTs) has proved to be good sensing elements for many purposes including flow variations sensing and chemical vapor sensing. However, they are not used in real applications due to the cost and size of the complex equipments required to measure the response of MWCNTs. The authors propos…
A novel donor-acceptor polymer based on thiophene and isopyrazole has been prepared for use in n-doping applications. Nonpolymerizable monomer radical cations appear to be the predominant oxidation product, resulting in a need for extended cycling to produce adequate quantities of polymer for characterization. The ele…
The vibrational relaxation of oxygen by O2–O collision is studied using physical kinetics and molecular collision dynamics in the temperature range from 2,000 K to 7,000 K. This study shows that all the potential energy surfaces appearing in the collision must be taken into account to correctly calculate the rate cons…
The organically modified montmorillonites (o-MMT) used in this study were prepared in a semi-solid state in molten long chain alkyl (hydrogenated tallow (HT) or stearyl) dimethyl/aryl ammonium chloride intercalant (quat), within a Brabender Plasticorder W50E chamber. The effect of quat level and structure was investig…
Based on the comparison of structures and properties of the HS6-5-2 high speed steels made with the powder injection moulding method, pressureless forming, compacting and sintering, and commercial steels made with the ASEA-STORA method, fine carbides spread evenly in the steel matrix were found in the structure of all…
In 3Si–1.4Al electrical steel with addition of Co, Mo or Ni, the texture of hot bands is almost random except γ fiber which is dominant. After cold reduction, the texture shows the typical (111)//ND and (110)//RD fibers. When cold rolled sheets are annealed, it is clear that γ fiber of {111}‹110› and {111}‹112› decrea…
Oleyl alcohol was complexed with new amphiphilic polyvinylalcohol derivatives with the aim of increasing its aqueous solubility, thus improving bioavailability and favoring its antitumor activity. Water-soluble amphiphilic polymers were prepared by polyvinyl alcohol (PVA) substitution with oleyl chains through a succi…
Two bichromophoric polyetherurethanes with a small number of pyrene rings on the quaternary ammonium groups and photoisomerizable azobenzene chromophore attached to the soft (AzPUC-Py1) or hard segment (AzPUC-Py2) of the polymeric backbone were synthesized and characterized. The effect of polymer structure on the tran…