Materials Literature
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Light orbital angular momentum (OAM) has been recognized as a new promising resource for classical and quantum information applications. In contrast to the spin angular momentum, the OAM is an inherently multidimensional. Thus, the information can be encoded in the higher-dimensional OAM alphabets. Recently, Marrucci…
L(+)-lactic acid is a commonly occurring organic acid. It is widely used in the food and food-related industries, and has the potential to be used for the production of biodegradable polymers, solvents and oxygenated chemicals. Lactic acid can be produced by both bacteria and fungi, however it is currently produced fr…
A surface dielectric barrier discharge (SDBD) reactor provides a homogeneous plasma\nover a large surface area. This allows surface treatments of foils, textiles or fibers. Here we present results of a study to characterize the AC and pulsed performance of SDBD with regard to ozone production, equivalent electrical mo…
Ramea is a small island in southern Newfoundland. Since 2004, it has a wind-diesel hybrid power system to provide power for approximately 600 inhabitants. The average wind energy contribution to the total supplied load is less than 10%. Newfoundland and Labrador Hydro with the support of ACOA has upgraded the Ramea hy…
An important question in power utility is the estimation of additional heating of power transformers due to indoor placement. This depends dominantly on the size, type and position of ventilation jalousies, through which the air enters and exits the room. The heat transferred from the transformer cooling surfaces to t…
An attempt has been made to investigate the various parameters affecting the fluid behaviour, partially filled in a rotating cylinder. When the cylinder is rotating at 'high' speed, a liquid forms a hollow cylinder. Different patterns are observed in the fluids for the rotatioal speeds below a critical speed. This stu…
This paper documents a technical feasibility study opf tannery wasterwater which was reclaimed (treated) and reutilized in tannery leather making processes. The studied waste water was processed in the waste water treatment plant owned by Igualada tanners (IDR), in Spain. The objectives included reduction of city fres…
study presents research results of the influence that refining and transfer of AlSi12S alloy on the porosity of high pressure die- castings. Tests were conducted under production conditions of Die-casting Foundry META-ZEL Sp z o.o. The operation of refining was conducted in a melting furnace, with the use of an FDU Mi…
We present an innovative process for the formation of a selective emitter by using an advanced phosphorous glass as a barrier layer against subsequent diffusion. The advanced barrier glass was achieved by the formation of a standard phosphorous glass treated with additional thermal oxidation immediately after depositi…
Purpose: In this article mechanical properties together with wear mechanism of paper knife-edge die made of A 681 steel with TiN, TiCN and DLC coating were analyzed. A Paper knife-edge die using in stamping machine, serves a map of complicated graphical projects. However wear resistance is strongly dependent on chemic…
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…