Materials Literature
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The authors report the first realization of sub-200 nm wide AlN-GaN-AlN (AGA) ridge waveguide with height-to-width ratio of ∼6:1, fabricated via inductively coupled plasma (ICP) etching with Cl2/Ar gas chemistry. Reactive ion etching (RIE) power and ICP power were varied in the ranges of 100–450 W and 200–600 W, respe…
In this paper, a periodic structure with frequency and polarization selective function is proposed. This new structure is composed of two parts, which are polarization selective part and frequency selective part. The polarization selective surface is one-dimensional periodic structure and frequency selective surface i…
Reactions of dimethyl ether (DME) over γ-Al 2 O 3 at 250°C have been investigated in a flow catalytic reactor. The main products of the interaction between DME and alumina are methanol and water. Heat evolution is observed as DME is passed over alumina, and replacing DME with nitrogen gives way to heat absorption. Cal…
We encountered an extremely rare case of a renal arteriovenous fistula (AVF) with 2 giant renal artery aneurysms (RAAs) in a 75-year-old woman who presented with congestive heart failure and pulmonary hypertension. A chest x-ray revealed cardiomegaly with a cardiothoracic ratio (CTR) of 65%. Computed tomography showed…
An array of apertures or horn antennas are commonly used to obtain high directivity and gain, at the expense of increasing the fabrication complexity. In this paper a new approach is presented based on the use of frequency selective surfaces (FSS). These structures are commonly used to improve the performance of plana…
A pulsed laser heating method was developed for determining thermal transport properties of solids under shock-wave compression. While the solid is compressed, a laser deposits a known amount of heat onto the sample surface, which is held in the shocked state by a transparent window. The heat from the laser briefly el…
Purpose The purpose of this paper is to present microstructural and fractographic analysis of damage in aluminum (2024T3)/carbon-fiber reinforced laminates (AlC) after static tensile test. The influence of fiber orientation on the failure was studied and discussed.
The subcritical advanced burner reactor (SABR) concept, which combines IFR-PRISM fast reactor technology and the ITER tokamak fusion physics and technology in a burner reactor for the transmutation of transuranics, has been adapted for a subcritical advanced breeder reactor (SABrR) that produces plutonium. It is found…
In sodium cooled fast breeder reactors, the high operating temperature necessitates hard facing of grid plate to avoid galling and to reduce the wear loss of the base material . Nickel-base cobalt-free alloy called Colmonoy-5 has been chosen as the hard facing material for the Prototype Fast Breeder Reactor (PFBR) gri…
In order to mitigate the brake action of the projectile and to obtain high launch velocity or launch efficiency in working process of magnetic-resistance coil launcher (MRCL), the influences of crowbar resistance on each branch current of the driving circuit and the acceleractive characteristics of nine kinds of diffe…
In this paper the results of the modification process of alloy AlSi11 as well as the influence of modification for structure and impact resistance have been presented. The investigation revealed that the modification of the AlSi11 silumin with the addition 0,05 - 0,4% AlSr10 and 0,1 - 0,2% AlB4 simultaneously provided…
Following an application from DoubleGood AB, submitted for authorisation of a health claim pursuant to Article 13(5) of Regulation (EC) No 1924/2006 via the Competent Authority of Sweden, the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) was asked to deliver an opinion on the scientific substantiation…
Tribulus terrestris L. (Family: Zygophyllaceae) has been used extensively for various human ailments by different traditional systems of medicine including Ayurveda. Recently, the anti-proliferative effect of this plant against breast cancer cells was reported. In the present study, the cytotoxic and antitumour effect…
Abstract [TbNa(4‐msal)4(phen)2]n (1) (4‐msal = 4‐methyl salicylic acid), a new hetero‐metallic lanthanide coordination polymer (CP) involving sodium was synthesized. It crystallizes in the monoclinic space group P21/n, with a = 20.4809(9) Å, b = 9.8183(2) Å, c = 26.1987(11) Å, α = 90.00°, β = 112.922(5)°, γ = 90.00°,…
We demonstrate mid-IR emission at a wavelength of 2.7 μm in chalcogenide glass integrated optic waveguides. Slab and rib waveguides are fabricated in RF magnetron sputtered films of erbium-doped gallium lanthanum sulfide glass. Elevated substrate temperature during deposition is found to enhance fluorescence lifetime,…
Phase relationships in the LiNaZnP2O7-LiKZnP2O7 system have been studied. For the first time a vast region of solid solutions of the rhombic syngony LiNa1 − x K x ZnP2O7 containing simultaneously three alkali cations was found. The miscibility is broken at the temperature of the polymorphous transformations LiKZnP2O7…
The performance of phased arrays degrades as the beam is scanned off broadside due to the effects of mutual coupling. A classical technique known as wide-angle impedance matching alleviates this issue by introducing a dielectric sheet at some distance above the array. Replacing the dielectric sheet with a metasurface…
Summary Nanoporous thermostable polycyanurate (PCN) films were generated by in‐situ metal complex‐catalyzed polycyclotrimerization of 4,4′‐ethylidenediphenyl dicyanate in the presence of 20–50 wt.% of inert high‐boiling temperature liquids as porogens, i.e. dioctyl, dibutyl or dimethyl phthalates (DOP, DBP or DMP), fo…
We characterized the 6,12-bis{[N-(3,4-dimethylphenyl)-N-(2,4,5-trimethylphenyl)]amino} chrysene (BmPAC), which has been proven to be a blue fluorescent emission with high EL efficiency. The blue fluorescent device exhibits good performance with an external quantum efficiency of 5.8% and current efficiency of 8.9 cd/A,…
Statistical methods was combined with micromechanics. Based on the parallel bar system, the damage law of the concrete materials subjected to uniaxial compressive stress was simulated. Furthermore, the meso-statistical damage constitutive of concrete materials was studied base on the Weibull’s statistical theory of th…