Materials Literature
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The development of empirical expressions for the spectral dependence of the real and imaginary components of the dielectric function have proven useful over the years. These expressions can be applied in the analysis of optical data, including the interpretation of transmittance, reflectance, and ellipsometric spectra…
The first project studied the three nitric oxide synthases under different oxygen tensions. We found that eNOS can reduce NO2- to NO in hypoxia and anoxia, using endothelial cells and isolated enzymes. This suggests a new role for eNOS in times of restricted oxygen.\nIn the next project, gold nanoparticles were joined…
A series of amphiphilic end-linked conetworks was synthesized by the combination of two polymerization techniques, quasiliving carbocationic (QLCCP) and group transfer polymerizations (GTP). The hydrophobic monomer was polyisobutylene methacrylate synthesized by the QLCCP of isobutylene and subsequent terminal modific…
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Orthogonal testing [L9(34)] was used to define more precisely the factors,determined on the basis of single factor experiments,affecting crude polysaccharide extraction from submerged cultures of Lepista sordida.Data revealed that the optimal extraction conditions consisted of three sequential aqueous extractions cond…
El hilo conductor de sus diferentes capitulos es el polimero que conocemos como PEDOT, poli (3,4-etilendioxitiofeno), material de reciente sintesis y singulares propiedades que le convierten en muy interesante estructura base para numerosos sistemas de naturaleza hibrida. El PEDOT es un polimero conductor con notables…
The technique to calculate durability of ship shafts with cracks on share modes is considered in the paper. The items of information such as growth rate of cracks, and the way to define stress intensity factor for steel 35 are described on the basis of experimental tests of samples. The calculation results of durabili…
To obtain a deeper understanding of the mechanism of plastic deformation and failure in superhard nanocomposites and heterostructures we studied, by means of the ab initio density functional theory, the stress-strain response and the change of the electronic structure during tensile and shear deformation of a prototyp…
Nitrogenase activity control in the grass-endophyte Azoarcus sp. BH72 is subjected to a posttranslational regulation, which is accompanied by covalent modification of its nitrogenase Fe-protein that was characterized here. Nitrogen-fixing cells of the betaproteobacterium Azoarcus sp. BH72 inactivate their nitrogenase…
Mechanical alloying (MA) of the titanium carbide (TiC) compound from high purity elemental powders has been studied. The powders were mechanically milled in a vibratory ball mill at room temperature for different milling times from 8 to 20 h. The mechanical alloying experiments were conducted using two milling tools;…
The objective of this study was to obtain a better understanding of the delayed hydride cracking (DHC) of Zr-2.5Nb alloy. The DHC model has some defects: first, it cannot explain why the DHC velocity (DHCV) becomes constant regardless of an applied stress intensity factor, even though the stress gradient is affected b…
The use of lignocellulosic residues in the composite materials manufacture, based on hydraulic binder, as fiber, has shown to improve the mechanical behaviour of the material, preserve the environment and develop a growing need for degradable plant products exploitation. Moreover, this may certainly offer alternative…
Composite material is types of material that have variation of strength. It can be used in many fields because of their wide range of strength. Research on composites continuously performed to overcome dependencies on traditional material such as metal. The concerns in biodegradable material has made composite become…
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The ability to synthesize carbon nanostructures, such as fullerenes, carbon nanotubes, nanodiamond, and mesoporous carbon; functionalize their surface; or assemble them into three-dimensional networks has opened new avenues for material design. Carbon nanostructures possess tunable optical, electrical or mechanical pr…
The effect of forging start temperature, forging ratio on the microstructure and mechanical properties of B7B4 steel ware investigated. Microstructure of centrifugal casted B7B4 steel consisted of martensite and ferrite phase. The volume fraction of ferrite increased with increase of forging start temperature and decr…
In general, Indian pulp and paper mills generate 25–225 m³ wastewater/tonne of paper. Pulp and paper mill effluent carries high pollution load in terms of COD, BOD, absorbable organic halides (AOX) and is dark brown in colour mainly due to the lignin and lignin derivatives. Stringent application of new environmental n…
A series of hydrotalcite-like compounds(HTALs) were made by coprecipitation with divalent ions(Mg~(2+),Zn~(2+),Cu~(2+),Ni~(2+) and Co~(2+)) and trivalent ions(Al~(3+) and Fe~(3+))in order to be applied in phosphate adsorption as a new sorbent.With Zn-Al molar ratio of 2∶1 and calcinations treatment at 300℃ for 4 hrs,Z…
The main goal of this work was examination of struc tural and compositional changes in the Polypropylene (PP) fabrics caused by ion irradiatio n. In this work, the PP fabric were irradiated with CO 2 ions. The Implantation conditions (i.e, exposure t ime, beam current, and discharge power) were changed to control the…
The effect of aging on the precipitation of the phase and the corrosion resistance in tungsten substituted super duplex stainless steels was investigated. The volume fraction of the phase and the current density increased with aging at temperatures up to and then decreased. With an increase in aging time, the volume f…