Materials Literature
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The inhibition action of coffee husk extract towards the corrosion of aluminum in 0.5 M HCl solution was studied at temperatures 25 and 45 0 C by weight loss method, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) methods. Surface morphology was…
Zinc sulphide nanoparticles were produced synthetically by wet chemical route by using cheap precursors. The size of the particles were determined by X-ray Diffraction(XRD) and scanning electron microscopy(SEM) and was compared to that of bulk ZnS. The SEM images revealed that bulk sized ZnS and ZnS nanoparticles were…
Nanotechnology has been identified as essential in solving many of the problems faced by humanity. Although nanomaterials are synthesized using physical and chemical approaches, it is now possible to synthesize nanomaterials using biological system with the help of plants. Recent studies on the use plant materials in…
The experimental study of a highly compressible porous material, made of cellulose fibers, and imbibed with water, during stress relaxation tests on a rheometer, shows that the material relaxes when kept at constant strain as long as there are open pores. Using the relaxation curves, the behaviour under compression ca…
Self-supported chitosan-based proton-conducting membranes were used as both flexible substrates and gate dielectrics for paste-type TFTs with low-voltage operation and logic function.
In the present work we investigate the nanometric cutting of a nanotwinned Cu containing 26° inclined twin boundaries using a diamond cutting tool by means of molecular dynamics simulations, with a focus on examining the influence of rake angle of cutting tools on the cutting processes. The underlying deformation mech…
Fibroids are most common benign tumors of the uterus, mostly situated in the body of the uterus. Rarely, they arise from extra-uterine sites with broad ligament fibroids being uncommon. Although by clinical examination and newer imaging modalities, we can easily know about size, number, and origin of these tumors and…
We study the evolution phenomena of metal twist grain boundaries (GBs) in the [100], [111] and [110] orientations, together with their bimetal interface, under anticlockwise and clockwise torsions.
This paper presents numerical analysis result of projectile penetration with concrete target. We applied dynamic material properties of 4340 steels, aluminium and explosive for projectile body. Dynamic material properties were measured with static tensile testing machine and Hopkinson pressure bar tests. Moreover, we…
Rajasthan is a rocky state having oldest Aravali ranges, which are very rich in diverse minerals, particularly dolomite, granite and marble. Hence, so many industries in Rajasthan are based on these rocks. However, during mechanical processing of these minerals, about 30%-40% part is left as a waste in the form of slu…
The adsorption equilibrium and dynamic breakthrough behaviour of chlorinated volatile organic compounds (CVOCs), namely chloroform and carbon tetrachloride, were experimentally investigated by using pelleted activated carbon in a fixed bed. The experimental studies were carried out at atmospheric pressure, the tempera…
Chromium doped nanostructured tin oxide (Cr:SnO2) thin-films were prepared on glass substrates by the spray pyrolysis technique at constant substrate temperature of 450 o C. The chromium dopant concentrations were taken as 10% and 20%, respectively. Structural, morphological and optical properties of the as-deposited…
The high piezoelectricity and high quality factor ferroelectric thin films are important for electromechanical applications especially the micro electromechanical system (MEMS). The ternary compound ferroelectric thin films 0.06Pb(Mn1/3, Nb2/3)O3+ 0.94Pb(Zr0.45, Ti0.55)O3(0.06PMnN‐0.94PZT(45/55)) were deposited on sil…
A novel and highly sensitive multi-catalytic sensing system was successfully developed for OPs and organochlorine pesticides, on the basis of the color reaction of TMB catalyzed by Fe 3+ ions.
A new species, Chthonius (Ephippiochthonius) negarinae sp. Nov., is described from Iran. In addition, illustrations and measurements are given.
The structural behaviour of reinforced concrete is governed significantly by the transmission of forces between steel and concrete. The bond is of special importance for the overlapping joint and anchoring of the reinforcement, where rigid bond is required. It also plays an important role in the rotational capacity of…
Three claw-shaped hexaarylbenzene derivatives containing pyrimidines have been synthesized by cobalt-catalyzed corresponding tolan derivatives.
The reduced graphene oxide (rGO)/manganese oxides (MnO 2 ) composites are obtained from GO/MnO 2 precursor by the microwaveassisted reducing procedures. Characterization indicates that the phase and morphology transformation have been discovered in GO/MnO 2 composite for the first time, and this transition can be expl…
Mechanical model for plastic relaxation of stresses in metals has been proposed. Our approach based on a characteristic plastic relaxation time, which is assumed as a material parameter. In a number of tasks values of its parameter become similarly high and it leads to dynamic effect appearing even at low strain rates…
This paper presents some of the results of dynamic compression, splitting and direct-tensile tests of gabbro-diabase using two split Hopkinson bar apparatus. The results of laboratory experiments on specimens without and with notch for a wide range of loading parameters are given. Strength and deformation characterist…