Materials Literature
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Purpose of the study To investigate if boosted protease inhibitor monotherapy is associated with a higher risk of neurocognitive impairment (NCI). Methods HIV‐infected patients from two hospitals in Madrid (Spain) without concomitant major neurocognitive confounders, currently receiving for ≥1 year lopinavir/ritonavir…
To take into account the impact of an underlying half-space on the communication channel between nano-scale nodes, the surface-impedance-based model is proposed. To verify this approach, its results are compared to that of the singularity-based model developed for the particular half-space. Finally, by using the imped…
The transmission spectra of bulk and thin films of (As2S1.5Se1.5)1-x:Snx in the visible and near infrared (IR) regions were investigated. Doping of As2S1.5Se1.5 chalcogenide glass with tin impurities essentially reduce the absorption bands of SH (Se-H) and H2O located at ν = 5190 cm-1 and ν = 3617 cm-1, respectively.…
Organo-soluble imide-containing oligomers (oligomaleimidohydroxyphenylene and oligoimide derived from benzalazine and m-phenylenebismaleimide) were examined as modifiers for melamine-alkyd and alkyd resins. Addition of these modifiers enhances the hardness, impact strength, and corrosion resistance of the coatings and…
Current paper handles the comparison of impact wear and sliding wear properties of the hard PVD single layer TiN and Ti(C,N), multilayer (Ti,Al)N and nanocomposite FiVIc® coatings on the plasma nitrided low-alloy 42CrMo4 steel. All the studied coatings demonstrated a relatively high impact wear resistance at the low (…
Finish machining of sintered steel is increasingly important for near net shape technology. However, the life of a cutting tool for machining sintered steel is generally much shorter than for carbon steel and thus, finish machining increases the manufacturing cost of sintered products. For this reason, wear characteri…
Modern material science is paying more attention on the development of nanomaterials for superior properties in various fields of applications like mechanical, thermal, electronic, bio-medical etc. For such applications, determination of nanoparticle sizes along with their distribution is important for attaining the d…
The mechanical properties of a single titin immunoglobulin-like domain (I27) are studied, based on the virial stress definition, via steered molecular dynamics simulation. Moreover, the effects of biological conditions on the obtained results are investigated. Due to different viewpoints on virial stress definition, t…
The conditions of the appearance of an unusual deformation zone consisting only of a forward slip zone during cold rolling and skin rolling are considered. The energy-force and structure parameters of metal deformation in such deformation zones are simulated. In this case, substantial energy saving is achieved; howeve…
The effects of sintering on Ag80-Al20nanopaste for use as a high temperature die attach material was studied. The sintering profile was fixed at 380°C, while the ramp rates and dwell times were varied at 5 to 10°C/min and 10 to 50 mins, respectively. It was shown statistically that dwell time had a more profound effec…
Features of the transformations in cryocondensed samples of nitrous oxide under thermal cycling at temperatures near T = 40 K are studied. It is shown how the deformation and translational vibrational subsystems of the condensed state of nitrous oxide react to these transitions. Measured vibrational spectra of the sam…
In order to find out partial discharge (PD) phenomena in the cable joint due to the poor workmanship during the installation, the relationship between PD inception voltages and joint defects was investigated. For the purpose, in the joint of 22.9kV CNCV cables, electric fields were calculated for various semiconductiv…
General kinetic features of radical and ionic polymerization processes accompanied by reversible chain termination reactions are considered. Special attention is paid to the conditions of applicability of the steady-state approximation usually employed to analyze the kinetics of radical polymerization. It is shown tha…
A nonenzymatic electrochemical sensor was fabricated for glucose detection based on gold nanoparticles graphene/carbon nanotube nanohybrids (AuNPs-GH/CNT), which were synthesized through in situ reduction procedure. Cyclic voltammetry (CV) and amperometry were used to evaluate the catalytic activity of the AuNPs-GH/CN…
The aim of this paper is to present the quantitative study of cathodoluminescence from InGaN/GaN single quantum wells grown on the GaN pyramid facets. Monte Carlo method has been used to investigate the generation, diffusion and recombination of minority carriers inside the structure under focused electron beam. The i…
The main and side reactions of the three selective catalytic reduction (SCR) reactions with ammonia over a vanadium-based catalyst have been investigated using synthetic gas mixtures in the temperature range of $170{\sim}590^{\circ}C$ . The three SCR reactions are standard SCR with pure NO, fast SCR with an equimolar…
A path of the formation of schools of thought on the development of high-strength vessel steels which were created by Academician of the Russian Academy of Sciences I.V. Gorynin is shown from the beginning of the 1950s to the present time. Results achieved in the field of development and application of high-strength s…
Relationships of cold protective clothing design and market were explored for apparel function and structure, and cold protective clothing company product to successful meet market demand. People require a large number of outdoor cold protective clothing that makes a chain of market, designer, consumer and manufacture…
The investigation was concentrated on the through-thickness properties of thick-composite laminates, and the development of a novel test method and several specimens with two different shapes and three to four different sizes. The experiments were performed on thick composite specimens; and all through-thickness mecha…
The LuVO4:Ln3+ (Ln3+ = Eu, Dy, and Sm) nano/microcrystals with different shapes were synthesized through a simple hydrothermal route assisted by trisodium citrate (Na3Cit). X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SE…