Materials Literature
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This paper reports the effects of flexibilizer and toughening agent on the processability, thermo-mechanical properties, and mechanical integrity of filled epoxy/anhydride systems used in electrical insulation. The toughening agent greatly enhanced the mechanical properties with minimal impact on thermal resistance.
The principle of three-phase aeronautical active power filter based on one-cycle control under simply space vector is analyzed. The mathematic model of three-phase aeronautical active power filter is established. Stability conditions of three-phase aeronautical active power filter based on one-cycle control under simp…
For the last few years there is a more and more pressing need to develop system for detecting HAB at their early stage. Researchers have then been working on new in situ sensor. In this paper a submarine transducer based on surface plasmon resonance is reported. It demonstrated a refractive index resolution of 3.10-6,…
A new technique for preparing double layer polyurethane (PU)-collagen nerve conduits for peripheral nerve repair via a double-nozzle low-temperature deposition manufacturing (DLDM) system has been developed. The DLDM system is based on a digital prototyping approach, and uses a combination of thermally induced phase s…
In this study, a 1,4,7,10-tetraazacyclododecane (cyclen)-based side-chain homopolymer was developed for the first time; this polymer can self-assembly with plasmid DNA to form polyelectrolyte complexes (polyplex), which can protect DNA from enzymatic degradation. Moreover, the polyplex can disassembly and release free…
The device performance of armchair edge graphene nanoribbon Schottky barrier field effect transistors (A-GNR SBFETs) over different edge roughness and widths are investigated over a wide range of devices in terms of ION/IOFF. Generally, wider GNRs outperform narrower GNRs in the presence of edge roughness effects with…
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The kinetics of the oxidative dechlorination of CCl 4 on two supported catalysts for methane oxychlorination (CuCl 2 -KCl and CuCl 2 -KCl-LaCl 3 ) at 350–425°C was studied using a gradientless method. Although these catalysts exhibited different activities, the rate of reaction on them was described by one exponential…
In this paper, liquid crystal alignment on SiO x film surfaces irradiated by a low-energy ion beam is systematically examined experimentally. As a consequence of low-energy ion beam exposure, LCs can be aligned vertically when a high rms of electric potential is present on SiO x film surfaces on the basis of electric…
In this paper we present the results of the synthesis of GaN in an AP-MOVPE system heated by infrared lamps starting from gallium nitride films obtained by nitridation of gallium arsenide. Although dependence of the characteristics of the different parameters of the deposition process on the properties of the layers h…
The yield and energy distributions of cesium atoms escaping in electron-stimulated desorption (ESD) from cesium layers adsorbed on tungsten coated by a gold film have been studied as a function of the incident electron energy, gold film thickness, adsorbed cesium concentration, and surface temperature. The measurement…
We report studies by x-ray diffraction, ferromagnetic resonance (FMR), and x-ray magnetic circular dichroism (XMCD) in Co/Ru superlattices grown by magnetron sputtering. We studied the [Co(50 Å)/Ru(tRu)]20 samples, which were deposited at room temperature on Si substrates with the Ru thicknesses, tRu, varying between…
ABSTRACT Carboxymethyl cellulose (CMC) is added to tortillas to maintain a pliable texture during storage. A need exists to optimize or replace CMC in masa and tortilla manufacturing with cheaper yet adequate alternatives. Change in water distribution upon gum addition may be key to understanding stability of cooked m…
Microporous titanium was fabricated by a special powder metallurgy process and the microstructure and the mechanical properties of the material were characterised by scanning electron microscopy and quasi-static compression. The pore sizes and porosities of the samples are ranged of 10–50 μm and 40–65%, respectively.…
The main question studied in this article is how the preference of MgO for six- or fivefold bonding in rocksalt or h-MgO structures, respectively, affects the local bond lengths near Mg atoms in wurtzite structured MgxZn1−xO alloys. A first-principles study of MgxZn1−xO alloys has been carried out in the range 0
Abstract The thermal evolution of the crystal structure of PrSr3Co1.5Fe1.5O10–d , a member of the n = 3 family of Ruddlesden-Popper compounds, has been studied by means of variable temperature synchrotron X-ray powder diffraction combined with room temperature neutron diffraction studies. This structure takes the idea…
We have measured the micromagnetic properties of a diluted magnetic semiconductor as a function of temperature and applied field with a scanning Hall probe microscope built in our laboratory. The design philosophy for this microscope and some details are described. The samples analyzed in this work are Ga0.94Mn0.06As…
The main purpose of this study is to develop an inexpensive, simple, selective and especially sensitive modified carbon paste electrode (MCPE) for the determination of dopamine (DA) in pharmaceutical and human serum samples. The carbon paste electrode (CPE) has been modified by using [N,N′-bis(2-pyridine carboxamido)-…
Abstract A novel heterotelechelic linear block copolymer of poly(ethylene glycol) (PEG) and poly(succinimide) (PSI) possessing both acetal andtert‐butoxycarbonyl‐amino (Boc‐NH) terminals (Acetal‐PEG‐b‐PSI‐NH‐Boc) with a narrow molecular weight distribution (MWD) was successfully prepared by the nucleophilic attack of…
The behavior of chalcosine in leaching of carbonyl nickel synthesis residues with copper(II) chloride solutions was studied. The chalcosine leaching was examined in relation to the chloride background concentration, and kinetic features of the process were elucidated.