Optimization of nanostructured metal layers for DNA hybridization monitoring in a SPR-i experiment
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A Tone Injection PAPR Reduction Method using Multi-objective Optimization based on Weighted-sum Genetic Algorithm
Tone injection scheme has been known as one of peak to average power ratio (PAPR) reduction methods deployable to multi-carrier system like orthogonal frequency division multiplexing (OFDM). The basic idea in tone injection scheme is to enforce the constellation size larger so that each of original constellation point…
Effects of functionalized multiwalled carbon nanotubes on the morphologies and mechanical properties of PP/EVA blend Part B Polymer physics
The maleic anhydride-grafted multiwalled carbon nanotubes (MWCNTs-g-MA) have been introduced into polypropylene/ethylene-co-vinyl acetate (PP/EVA) blend. To clearly describe the effects of MWCNTs-g-MA on the morphology and mechanical properties of PP/EVA blends, the selective distribution of MWCNTs-g-MA in the blends…
Co-incineração em fornos de cimenteiras: análise de caso
Com o objectivo de conhecer o processo da co-incineração, foram realizadas visitas ao sistema integrado de tratamento e eliminação de resíduos, sA (sisAV), na chamusca, e à cimpor, em souselas. pode concluir-se que o tratamento das emissões gasosas, principal questão conflituosa associada à co-incineração, não difere…
Trave composta con interfaccia non-lineare: modello analitico
This paper presents a non-linear analytical model for analyzing composite beams under transverse bending load. The model reproduces the elements responsible for the relative slip between the layers with an elasto-plastic strain-softening interlayer. Further than the slip, the model predicts load induced stress and ult…
Effect of one and two stiffeners on residual stresses of ship hull
Failure of ship hulls may be a result of a combination of factors. Residual stress caused by welding of the stiffeners on to the steel plates is one of the contributing factors to the failure. This analysis was completed for a more in-depth look at the residual stress distribution found at a typical weld-stiffener con…
Improving the Corrosion Resistance of a High-Strength Aluminum-Copper Casting Alloy
The B206 alloy (up to 5 wt% Cu) is the strongest aluminum foundry alloy in current use. B206 alloy can be used in a number of automotive applications, e.g. suspension knuckles and vehicle control arms, to reduce vehicle weight. Elimination of hot tearing has reawakened the interest in the 206 alloy family. However, th…
1D chains of Mn₆ single-molecule magnets
Use of the dicarboxylates iso-phthalate and succinate in the preparation of [Mn₆] SMMs links the hexametallic units into 1D chains.
Structure and magnetic properties of new compounds CdYFeWO_7
The solid solutions of CdYFeWO7,which are cubic pyrochlores of the type A2B2O7,have been prepared and their structures were determined using Ab initio method.Rietveld refinement of the powder XRD data showed that CdYFeWO7 adopted cubic(Fd-3m) structure,while oxides crystallized in a defect-pyrochlore structure where b…
Models for the optical dispersion relations of amorphous semiconductors
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…
Applications of gold nanoparticles to thiol and nitric oxide chemistry
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…
Anionic amphiphilic end-linked conetworks by the combination of quasiliving carbocationic and group transfer polymerizations Part A Polymer chemistry
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…
Charge Localization During Program and Retention in NROM-like Nonvolatile Memory Devices.
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Optimization of parameters affecting polysaccharide extraction from submerged cultures of Lepista sordida.
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…
Materiales híbridos nanoestructurados con base de poli: (3,4-etilendioxitiofeno)
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…
О повышении долговечности судовых валов с трещинами
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…
Friedel Oscillations are Limiting the Strength of Superhard Nanocomposites and Heterostructures
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…
Physiological and proteome analyses to investigate the nitrogen fixation mechanism particularly with respect tothe posttranslational regulation of nitrogenase in Azoarcus sp. BH72
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…
Structural Properties of TiC obtained by Mechano-synthesis
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;…
A Study on the Characteristics of Delayed Hydride Cracking in Zr-2.5Nb Pressure Tube with the Heating-up and Heat-treatment
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…