Materials Literature
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The friction sensitivity(FS) of five aliphatic linear and eight cyclic nitramines has been determined and correlated with DFT B3LYP/6-31-G(d,p) // 6-311+G(d,p) positive(VS,max) and negative(VS,min) extremes of molecular surface electrostatic potentials VS(r).While there is an ambiguous relationship between the VS,max…
Calcium Barium tartrate single crystals were grown in silica gel at ambient temperature. Effect of various parameters like gel pH, and gel aging, gel density and concentration of reactants on the growth of these crystals were studies. Crystals having different morphologies and habits were obtained. Whitish semitranspa…
The detailed analysis of atomic and magnetic structure has been performed by Mössbauer spectroscopy for polycrystalline Fe80Ga20 films of different thickness ranging from 20 nm to 200 nm.The films were deposited on Si(100) substrate using dual sputtering and evaporation method.Obtained CEMS spectra have been fitted wi…
The decomposition of hydrogen peroxide in presence of some metal oxides as a heterogeneous & heterogenized catalyst has been investigated by measuring the evolution of oxygen at different time intervals in the temperature range 30-600C. The catalytic activity is increased, an increase in the amount of catalyst and pH.…
Purpose: The purpose of this study was to investigate the effect of 0cm, 2.5cm, 5cm height increase elevator shoes insole on gait and foot pressure Methods: Fifteen young adult were recruited this study. Gait and foot was measured by Gait AnalyzerTM(Tech Storm Inc. korea). Statistical analysis was used one-way ANOVA t…
Flux residues and other ionic residues left on a printed circuit board assembly (PCBA) from the manufacturing process are a potential threat to climatic reliability for electronic devices in service today. The current use of no-clean flux systems should in principle only leave benign surface contaminants during wave a…
Thermoplastic Polyurethane (TPU) is a highly versatile material with superior physical properties but high cost. Melt blending of TPU with Polyolefins (PO) can lower the cost and improve mechanical and chemical properties. Since TPU and PO are completely immiscible polymers, property enhancement cannot be attained. Ef…
In present investigation we are studied the kinetics and mechanism of oxidation of ester by potassium dichromate in acid medium. In the present paper we reported the effect of oxidant K2Cr2O7, effect of substrate (ester), effect of sulphuric acid and effect of temperature on oxidation of ester. The reaction is first o…
The aim of this study is to investigate how much the compressive strength of thick composite panels is reduced due to delaminations and to investigate under which conditions a delamination will grow. Understanding of this is essential in order to move forward the design limits used in the structural design process. Re…
Calcium Cadmium tartrate single crystals were grown in silica gel at ambient temperature. Effect of various parameters like gel pH, and gel aging, gel density and concentration of reactants on the growth of these crystals were studies. Crystals having different morphologies and habits were obtained. Transparent, pyram…
Tissue engineering aims to develop biologically functional scafolds for the repair, replacement, or regeneration of damaged tissues. The aim of this work was to find a new manufacturing process of a biologically functional scaffolds. Various synthetic biopolymers, like a gelatine, PVA, collagen have been electrospun t…
Two methods for modeling metal oxide surge arresters are presented and compared: the IEEE Working Group 3.4.11 surge arrester model and the simplified surge arrester model proposed by Pinceti and Giannettoni. The comparison of model performances and accuracy is conducted in the program package EMTP – RV. Detailed inst…
For wood a material with anisotropic characteristics and strength asymmetry, Hankinson ś formula was the first successful expression to predict the strength in non-parallel orientation to the grains. However, with the emergence of new materials, with directional properties, there was a need to formulate broader failur…
Increasing attention is being paid to the economic advantages that high-strength low-alloy steels have to offer. These advantages include lower structural weight (Fig. 1), increased resistance to brittle failure, economies during construction and transportation as a result of lower cost in handling lighter sections, f…
The microbial contamination of water is a world-wide environmental problem. Nanotechnology is one of the efficient tools which can be applied to solve this problem. Silver nanoparticles are known to be highly toxic to microorganisms, showing strong biocidal effect and are nontoxic to the human body at low concentratio…
Consolidation additives are used in the restoration of old paper documents for partial recovery of the loss of structural strength by natural ageing, as well as for reducing their further deterioration, due to environmetal action. The study evaluates the effectiveness of some unconventional chitosan-based additives, c…
This paper deals with squirrel cage induction machines and their modeling con- cerning the occurrence of current displacement in rotor bars caused by skin efiect. Considering non-steady-state operation such as direct on-line start and especially in the case of sustained ramp-up, e.g., by using Y-D starter or soft star…
A micro-electrochemical cell for detecting permeated hydrogen, which is generated by atmospheric corrosion at small scratched areas on coated steel, was developed. It is possible to measure hydrogen permeation currents in the nano-ampere range. Using this cell, the influence of the scratched area on the hydrogen gener…
Mono- and polydentate behaving guanidine ligands and their corresponding zinc complexes were prepared and investigated towards the influence of these special ligand classes on the molecular structures of the complexes as well as their performance in the ring-opening polymerization of lactide. All synthesized complexes…
The material properties of graphene, such as electrical conductivity, optical transmission, and chemical reactivity, can be drastically altered with fluorination, enabling new utility from this already promising material. Stoichiometric control of the fluorination of graphene was made possible by controlled exposure o…