Materials Literature
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Using examples of some perspective electronic materials (HgSeS, Fe3O4, InN, and others) it is shown that magnetoresistance data at high magnetic elds allow evaluating the true values of mobility of charge carriers in spite of any adverse factors. Additional impacts involving high pressure and irradiation with high-ene…
To enhance the quality of finite-element-simulations the dependency of field variables significantly influencing friction behavior has to be taken into account. Therefore a new model was developed to optimize friction in the simulation of cold forging processes. The friction coefficient depends on contact normal stres…
Abstract Amorphous ribbons of the systems Fe60Co20Si10B10 and Fe50Co20V10Si10B10 have been prepared via melt spinning to be used as electrode materials in alkaline water electrolysis. It turned out that the gas atmosphere during melt-spinning has a significant impact on the surface morphology and microstructure of the…
The high-power piezoelectric characteristics of c -axis crystal-oriented (Sr,Ca) 2 NaNb 5 O 15 (SCNN) ceramics were studied by the constant-motional-current driving method, and compared with those of the randomly oriented ceramics superior to those of hard Pb(Ti,Zr)O 3 (PZT) ceramics. The c -axis crystal-oriented SCNN…
A major clinical concern in coronary intervention for cardiovascular disease is late stent thrombosis after the implantation of drug eluting stents (DES). DES widely used in clinical settings currently utilize polymer coatings, which can induce persistent arterial wall inflammation and delayed vascular healing, result…
Mechanistic empirical pavement design is based on modelling certain modes of failure for different pavement materials. In the Australian and New Zealand guidelines, the mechanistic pavement design is based on modelling fatigue and permanent deformation as the two major modes of failures. The Austroads guidelines and N…
Reduced downstream costs, together with high purity recovery of polyhydroxyalkanoate (PHA), will accelerate the commercialization of high quality PHA-based products. In this work, a process was designed for effective recovery of the copolymer poly(hydroxybutyrate-co-hydroxyhexanoate) (P(HB-co-HHx)) containing high lev…
The present work investigates the effect of reactive polyester and kaolin on the mechanical and adhesive properties of brittle epoxy resin. The impact strength (IS), flexural strength and critical stress intensity factor (K C ), as well as the adhesive strength under tensile and impact conditions, were evaluated as fu…
In this paper, fiber laser-cold metal transfer (CMT) arc hybrid welding (L-C welding) and fiber laser-Pulse arc hybrid welding (L-P welding) were employed to join thick-section steels respectively, and their influences on the microstructure, tensile strength and impact toughness were investigated. Results show that st…
Les fabricants de cosmétiques sont tenus de garantir la conservation des produits qu’ils mettent sur le marché. L’introduction de conservateurs permet ainsi de protéger les produits cosmétiques des contaminations microbiennes, auxquelles ils sont exposés lors de la production, mais aussi ensuite lors de leur utilisati…
Recently, the improvement of diagnosis techniques of electric power equipment with increasing of demand for energy and high electric power is necessarily. This paper describes that test of very low frequency (VLF) Tanδ performed on cable samples of Medium Voltage (MV) class. The paper shows that tanδ measurements usin…
The application of the ultra-high frequency (UHF) partial discharge (PD) detection method has proven effective in GIS. This method is now also being applied to detect PDs in oil-filled power transformers. In this paper, the localization of the PD source in transformer is discussed. This is achieved by applying an arra…
A critical challenge in designing materials for tissue engineering (TE) is to provide essential cues that can control cellular behaviour and promote tissue regeneration. TE with fibrous scaffolds by using electrospinning is emerging as a major research area in the field of regenerative medicine. This thesis presents t…
INTRODUCTION Electron-beam-irradiated dl -α-Tocopherol (Vitamin E)-blended UHMWPE is now being considered as a potential new bearing surface material for hip prosthesis [1]. However, Vitamin E stabilizes some of the primary free-radicals required for crosslinking, thereby reducing the material9s crosslink density [2].…
The most frequently appearing form of DNA is a double helical structure in which two single strands are held together by Watson-Crick base pairs. In addition, guanine rich DNA sequences are known to adopt several unusual structures with G-quartet as a basic repeating motif. Recently large self-assembling nanostructure…
[Li x (Na0.52K0.48)1-x ]NbO3 (0 ≤x ≤0.091) ceramics were synthesized using hydrothermal powders and the lithium doping content was controlled to optimize their piezoelectric properties. The raw KNbO3 and NaNbO3 powders were obtained separately by a hydrothermal method and LiNbO3 powders were prepared by milling a comm…
Surface functionalized gold nanorods (GNRs) with three optical signals and the ability to track and observe live cells was investigated. The Cetyltrimethyl Ammonium Bromide (CTAB) was used as the shape-directing agent to develop GNRs with uniform size and aspect ratio. The as-synthesized GNRs can strongly enhance the…
Mass production of low-cost functional nanomaterials is an important issue for the development of nanoscience and nanotechnology. With rich structural, physical and chemical properties, polyoxometalates are important functional materials for both industrial applications and fundamental research. We presented a family…
Tetragonal-phased LiYF4:Yb3+/Er3+and LiYbF4:Yb3+/Er3+crystal particles with octagonal morphology are prepared by hydrothermal method and characterized with XRD and SEM. The up-conversion fluorescence was studied with spectroscopic method. The results showed that crystallization and particle size was adjusted by introd…
CuAlS2 Chalcopyrite nanocrystalline are synthesized with facile method. The heat arrested solvothermal method for synthesize nanocrystalline were investigated. The time duration of synthesis, temperature of solution and metal salts to solvent molar ratio can be parameters that we are studied. The nanoparticles were sy…