Materials Literature
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This paper concentrates on the characterization of high frequency radiation from Partial Discharge sources in dielectric materials. It is envisaged that identifying partial discharge radiation in this band could provide an advantageous detection solution, as interferers such as television and other common radio commun…
, the angel of lap of pegs by yarn on the slat of ring-twisting frame (the input only for spiral yarns) and the frequency of rocker's action in ringtwisting frame (the input only for bunch yarns). All obtained yarns were analysed in respect of real value of twist (t/m), linear density (tex), breaking force (cN/tex), e…
Scheelite-type LiEuW2O8 (LEW) phosphors with the optical function of color conversion from near-UV to red were prepared by sol–gel method using a lithium acetate dehydrate, europium(III) nitrate pentahydrate, and tungsten(VI) chloride as starting materials. Viscous mixing sol was prefired at 300 °C for 120 min in air…
In this paper we present basic designs, operation concepts and some application examples of a novel microspectrometer for the spectral range of 3-5μm, which is based on a pyroelectric detector with an integrated micromachined Fabry-Perot filter (FPF). We discuss the influence of different optical setups on the spectra…
By now, the negative refraction phenomenon occurs only in the microwave band in the left-handed materials, and this frequency band is called resonant frequency band. The application of the left-handed materials is greatly limited because the resonant frequency is low, and the source of wave is usually sun light or vis…
This research investigated the effect of moisture content (MC) and density on the mechanical properties of veneer-bamboo zephyr composites. Five-ply veneer-bamboo zephyr composites were manufactured using 4-year-old hachiku bamboo (Phyllostachys nigra var. henonis Stapf) and keruing (Dipterocarpus sp.) veneers under s…
Near-net-shaped zirconia minispheres were prepared by a novel processing technique based on the sol-gel method. Yttrium was used as a stabilizing agent. Formation of minispheres was achieved in a setting solution by drop generation. The impact of the stabilizing agent on sintering conditions was analysed in detail. Th…
The geometrical structure of Cu doped 32-atom supercell of AlN was optimized by using the ultra-soft pseudopotential method of total-energy plane wave based on density functional theory （DFT） . Density of states，band structure and optical properties were calculated and discussed in detail. The results revealed that Th…
Potassium methyl xanthate and its complex [Pd(Me-Xanthate)_2] were synthesized at room temperature under stirring conditions. The ligand and the complex were characterized by elemental analysis, IR, NMR (^1H, ^{13}C) and XRD. NMR data revealed that potassium methyl xanthate acts as a bidentate specie and the complex e…
A metal-oxide-semiconductor high-electron-mobility transistor (MOS-HEMT) with atomic layer deposition (ALD) of 10nm Al2O3 gate dielectric is manufactured. The superiorities in saturation current and leakage current of the novel MOS-HEMT device are verified by comparison of the MOS-HEMT with traditional MES-HEMT device…
The image analysis part of gel-based proteome research plays an important role in the overall success of the experiment. The main purpose of software-assisted 2DE gel analysis is to detect the protein spots, match them between gels within an experiment, and identify any differences in protein expression between sets o…
Stelleropsis genus belongs to T hymelaeaceae and h as two species in Iran of which S. iranica Pobed. sub sp. Iranica Bonge (aerial parts) were collected from the N orth-East of Iran and extracted with AcOEt and M eOH, consequently. The main phenolic compounds were isolated by different chromatography methods and the s…
Since ancient times, heating wood has been used a method to dry and modify its properties. Nowadays, heat treatment is used in industrial processes for the same reasons. Treatment at temperatures above 150 °C can change the color, improve resistance to biodegradation and enhance dimensional stability. However, losses…
International audience
Carbon nanotubes were grown directly on carbon fibres using the chemical vapor deposition technique. The effects of reaction temperature (800-900oC) and hydrogen gas flowrate (100-300 ml/min) on the morphology of the carbon nanotube coating were investigated. Carbon nanotubes produced were characterized using scanning…
Wir untersuchen das Verhalten von Wasser in engen, unpolaren Poren, deren geringer Durchmesser die Wassermolekule zwingt, sich hintereinander anzuordnen. Aufgrund dieser fast eindimensionalen raumlichen Einschrankung der Molekule zeigt sich neuartiges physikalisches Verhalten im Vergleich zu Wasser in makroskopischen…
Hydrothermally synthesized glucose-borate complexes (mole ratio 1/1 and 1/2) were carbonized at 800–1200℃ for 1 h in argon, followed by boiling in water to remove borate byproducts. Formed boron-containing carbons (B-carbons) contained 1–3.4 mass% boron and, by XPS, boron was present mainly as a form of C-B-O bonding…
Гетероэпитаксиальные плёнки мультиферроика феррита висмута, допированного неодимом, Мухортов Р’.Рњ., Головко Р®.Р
A plate of Zircaloy-2 received in the β-quenched condition was heat treated to vary systematically the size of the second phase particles (SPPs) and the content of alloying elements retained in solid solution. Scanning electron microscopy and thermoelectric power measurements were used to quantify these microstructura…
Metal complexes ofTi(III), VO(IV), Cr(III), Mn(III), Fe(III) and Zr(IV) with Schiffbase derived from 2-hydroxy-5-methylacetophenone and benzoyl hydrazide have been synthesized and characterized on the basis of elemental analysis, infrared spectra, magnetic moment, electronic spectra and thermogravimetric studies. Vari…