Materials Literature
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Using the first-principles calculations within the density functional theory, we study the nanofriction between two graphene layers. The result shows that the friction of the graphene is isotropic, and the relationship between the load and the friction factor can be divided into three phases. For the smaller and large…
Direct fluorination, as one of the most effective approaches to chemical modification of polymer surfaces, has been widely developed from fundamental researches to industrial applications for about forty years in chemical industry field. However, today, its investigations and applications in adjusting and controlling…
Testosterone like activity of seeds of Mucuna pruriens and its effects on serum biochemical metabolites in immature male rats were investigated. Forty eight immature male rats were divided into four equal groups. Rats of groups A and B were orally given ethanolic and aqueous extracts of Mucuna pruriens seeds daily at…
The lattice strain of large-scale KDP crystal is characterized by using high resolution X-ray diffraction technique, and the lattice stress is analysed quantitatively in detail. The results indicate that KDP crystal may cleave easily along the [001] direction, which corresponds to the cracking phenomenon in the practi…
We study how varying the Péclet number (Pe) affects the steady state sedimentation of colloidal particles that interact through short-ranged attractions. By employing a hybrid molecular dynamics simulation method we demonstrate that the average sedimentation velocity changes from a non-monotonic dependence on packing…
info:eu-repo/semantics/published
Solutions of dyes Rhodamine 6G (Rh6G) and Coumarin480(C480) were prepared at five concentrations (1x10-3, 5x10-4, 1x10-4, 5x10-5 and1x10-5) mol/l, the mixing was stirred to obtain on a homogenous solution, the(poly methyl-methacrylate) (PMMA) was solved by chloroform solvent with certain ratio, afterward (PMMA+Rh6G) a…
To extend the kind of diamond and solve the low life of diamond tools because of the insufficiency of holding force, the strip-shape diamond with more than 2.5 in length-diameter ratio and 0.81.0 mm in length is synthesized by optimizing FeNi based catalyst composition and using the technology in the China-type cubic…
Compressibility of high-purity nanostructured cBN has been studied under quasi-hydrostatic conditions at 300 K up to 35 GPa using diamond anvil cell and angle-dispersive synchrotron powder X-ray diffraction. It has been found that the data fit to the Vinet equation of state yields the values of the bulk modulus B₀ of…
In this paper, we report on the magnetism and the thermomagnetic power generation performance of a first-order phase transition material Mn1.2Fe0.8P0.4Si0.6,which can be used for thermomagnetic power generation that turns heat directly into electricity. The compound is synthesized by using the high-energy ball milling…
In this paper, we study the response properties of multi-photon of NbN superconductor nanowire in superconducting single photon detector (SSPD). We measure the NbN nanowire device's DC characteristics and detection probability for single and multi-photon light pulse signal at a temperature of 3.5 K. The measured resul…
The cohesive energies, Fermi energies and local density of states (LDOS) are calculated by the first-principles based on pseudopotential plane wave method in this paper to investigate the physical nature of corrosion of Pb-Mg-Al alloy. The mechanism of electrochemical corrosion is analyzed according to the calculated…
Sb-doped ZnO thin films with various impurity content values are deposited on glass substrates by radio frequency magnetron sputtering medthods. The influences of Sb doping content on the microstructural, photoluminescence and Raman properties of ZnO film are systematically investigated by X-ray diffraction (XRD), tra…
Component rig tests suggest that ANS triboconditioning brings significant improvements in the tribological properties of camshafts, cylinder liners, and rocker arm shafts. Extreme-pressure mechanical treatment of the component surface in combination with a tribochemical deposition of a low-friction antiwear film based…
In the Part II of the review we describe the results of long-term investigations conducted at the Institute for Metals Superplasticity Problems of RAS (IMSP RAS) related to the development of the technology of superplastic forming and pressure welding (SPF/PW). In the Part I the international experience was described.
Adsorption of anthocleista djalonensis leaf extract on aluminum in hydrochloric acid solution was studied at 30°C and 60°C using gravimetric technique. Increasing the concentration (v/v %) of anthocleista djalonensis leaf extract was observed to increase its corrosion inhibition efficiency. Temperature studies reveale…
A large percentage of commercial and investigational pharmaceutical compounds are enantiomers, and many of them show significant enantioselective differences in their pharmacokinetics and pharmacodynamics. The importance of chirality of drugs has been increasingly recognized, and the consequences of using them as race…
The aimof this studywas to investigate the suitability ofmaize cob particles and recycled low density polyethylene(RLDPE) as a raw material for particleboardmanufacturing. The board was produced by varying RLDPE from 30-70wt%at 10wt%interval. Themicrostructure, physical (thickness swelling (TS), water absorption (WA))…
Vanadium pentoxide (V2O5) thin films were prepared by dip-coating sol-gel technique by dissolving V2O5 powder in hydrogen peroxide (H2O2), the solution, leading V2O5 sol-gel nanocrystalline films. The films under preparation were exposed different hydration states, n, varying from 6 to 2 determined via XRD measurement…
Abstract Calcium doped lanthanum and yttrium manganite electrode materials with oxygen deficiency and low polarization resistance (<30Ω*cm 2 at 600°C) were tested in new advanced electrochemical sensor for the oxygen measurements. Oxygen sensor with oxide electrodes was showing fast response (t95~5s at 600°C), good re…