Materials Literature
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Polyvinyl alcohol-Polypyrrole composite films were prepared by solution casting technique using chemical oxidative polymerization of pyrrole. Ferric Chloride (FeCl3) was used as an oxidizing agent. This technique produces conductive, flexible and free standing polymer composite films. The dc conductivity was obtained…
Magnesium alloys are being developed as advanced materials for structural applications where reduced weight is a primary motivator. Alloying can enhance the properties of magnesium without significantly affecting its density. Essential to alloy development, inclusive of processing parameters, is knowledge of thermodyn…
In the present study, NiO nanoparticles with average particle size of 35 nm were successfully prepared by solvothermal method. Thecrystal microstructure,composition, morphologyand particle size distribution of product was analyzed by using X-ray diffraction (XRD),Fourier transform infrared spectroscopy (FTIR), scannin…
Abstract Freestanding scaffolds were fabricated of Mg5W (wt.% yttrium) alloy using magnetron sputtering technology. Appropriate method was found to produce scaffolds with high reproducibility, spatial resolution of 1 μm and good mechanical properties. Two different techniques were used for surface finishing, microblas…
Mercury is one of the most toxic heavy metals present in the earth’s crust. It has been considered as environmental pollutant because of its potent toxicity to plants and humans. In this review, we discuss mercury toxicity responses on plant metabolism and its detoxification mechanism by phytochelatins and antioxidant…
Motivated by the proposition of a new theoretical ansatz [V.N. Novikov, K.S. Schweizer, A.P. Sokolov, J. Chem. Phys. 138, 164508 (2013)], we have revisited the question of the characterization of the collective response of polyisobutylene at intermediate length scales observed by neutron spin echo (NSE) experiments. T…
Abstract During the recent years different reviews have been published focusing on several aspects: the challenge of application of Mg-alloys as biomaterials, manufacturing procedure and its influence on the corrosion stability, application of different techniques to produce protection layers, coatings onto the surfac…
2000NM Mn-Zn-ferrites have been produced by radiation-thermal sintering (RTS). We have studied the effect of RTS on the electromagnetic properties of ferrites. X-ray diffraction have been used to investigate general aspects of phase transformations during the radiation-thermal sintering of green compacts.
This paper presents the testing of a catalytic converter coated with aluminium oxide nanoparticles as catalyst to be used in the conventional catalytic converter. The catalytic converter was developed based on catalyst materials consisting of metal oxides such as aluminium oxide nano particles (Al2o3). The catalyst ma…
A field experiment was carried out for two winter seasons at Ismailia Agric. Res. Station (latitude, 30 o 35' 41.901 N and longitude, 32 o 16' 45.834 E) to study impact of feldspar acidulation on potassium dissolution and pea production. Feldspar acidulation with organic acids ( humic, fulvic and citric) and mineral a…
Semiconductor nanocrystals have got considerable interest due to their distinctive structural, electronic and optical properties resulting from their large surface/volume (S/V) ratio and quantum confinement effect. Cubic ZnS, a semiconductor with a broad band gap, has fascinated much consideration because of its elect…
In order to ensure proper composting of sewage sludge it is necessary to use bulking agents which will create favorable water and air conditions inside the pile and will be an additional source of carbon for the improvement of the C: N ratio of a composted mixture. However, the cereal straw widely used for composting…
Through analyses of thermo-volumetric (Coefficient of Thermal Contraction [CTC]), thermo-viscoelastic (stiffness-temperature relationship), crack initiation and fracture, and damage characterization parameters, the influence of oxidative aging of asphalt binders on the thermal cracking characteristics of asphalt mixtu…
Intrinsic localized modes or discrete breathers (DBs) are spatially localized, large- amplitude vibrational modes in defect-free nonlinear lattices. In this review, recent achievements in the investigation of properties of DBs in carbon and hydrocarbon nanostructures are dis- cussed. After a brief overview of the carb…
Alvarez lenses can achieve focal length tuning by shifting a pair of optical elements with cubic surfaces in a direction perpendicular to the optical axis, offering us a series of advantages including compact structures with large varifocal ranges, ease of packaging, and high stability against external disturbances. I…
Yolk-shell structured silicon-polypyrrole (Si-PPy) composite has been prepared by an in situ chemical polymerization approach. The designed parcel method significantly improves the cycling stability and rate capability compared to those of bare silicon. The Si-PPy composite exhibits a high specific capacity of 1400 mA…
Wool yarns are dyed with natural colouring matter extracted from Cochineal, Turmeric and Madder using exhaustion method. These dyed yarns are pre-mordanted with different types of mordants. Different measurements have been carried out for the dyed wool yarns after exposure to air pollution in residential site (Kalla r…
Macroflows are considered for simulation of hot gas flow in a channel with nanopores. The flows are caused by the effects of gas slip, jumps of temperature and concentrations of gas mixture components on the surface of pores. The macroflows are obtained by averaging microflows in nanopores. The intensities of slip pro…
In this work, we identify the type of calcium arsenates found in sediment samples from an aquifer located in Matehuala, San Luis Potos, Mxico. Sediments in contact with levels up to 158 mg/L of arsenic in neutral pH water were studied by X-ray diffraction, scanning electron microscopy coupled to energy dispersive X-ra…
The paper presents results of studying bulk microstructure in carbon nanocomposites by impulse acoustic microscopy technique. Nanocomposite materials are in the focus of interest because of their outstanding properties in minimal nanofiller content. Large surface area and high superficial activity cause strong interac…