Materials Literature
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Graphene electronics is most likely to complement the mainstream Si technologies instead of replacing them. Large area graphene that can be grown on Cu or on Ni must be subsequently transferred to Si, which is problematical. A process in which graphene grows directly on a Si wafer would thus be welcome; yet SiC format…
Activated carbons were produced from waste and investigated for their efficiency for the removal of mono-nitrogen oxides (NO x ) in simulated flue gases at a low temperature.The wastes used were waste biomass (date seeds), processed municipal solid waste in the form of refuse-derived fuel and waste tyres.The morpholog…
A self-propelled object is a type of functional inanimate system used in the development of novel micro-robot designs. Many studies on the application of selfpropelled objects as drug delivery systems, cleaning systems for polluted water cleansing, and target DNA sorting systems have been reported. In order to realize…
Collagen extracted from leather waste was modified with maleic anhydride. Then, using ammonium persulfate as an initiator, by pre-modifying collagen reacted with styrene and ethyl acrylate monomers, a vinyl-grafted collagen sizing agent (VGCSA) for paper was prepared. Before the experiment, the performance of VGCSA wa…
Abstract The intermetallic gold compounds RE 4Mg3Au10 (RE = La, Ce, Pr) and RE 4Cd3Au10 (RE = Y, La–Nd, Sm, Gd–Dy) were obtained from the elements through high-frequency melting in sealed niobium tubes and subsequent annealing in a muffle furnace. The new aurides crystallize with the Ca4In3Au10-type structure. They we…
We explain the dynamics of charge carriers in graphene using a two dimensional Dirac oscillator in the presence of an external magnetic field. The energy dispersion relation with linear behavior corresponds to monolayer graphene in a relativistic regime, whereas parabolic behavior appears in the case of bilayer graphe…
The sintering responses of Inconel 625 prealloyed powder (powder size: 80–180 μm accounting for 96 wt-%) were first assessed using dilatometry. Then, sintering of Inconel 625 tubes (Φ54 mm × 1000 mm), shaped by cold isostatic pressing from prealloyed powder at 170 MPa, was studied at temperatures between 1180 and 1260…
Numerical simulations of thermo-electromagnetic properties of a high temperature superconducting (HTS) bulk levitating over a permanent magnetic guideway (PMG) are performed by resorting to the quasistatic approximation of the H-method coupling with the classical description of the heat conduction equation. The numeri…
Two composites of Ba 0.5 Sr 0.5 Fe 12 O 19 grains dispersed in a 3 mol% yttria‐doped zirconia (3Y‐ TZP ) matrix are prepared by two methods. The mechanical and electromagnetic properties of the both composites are investigated. The maximum values of the bending strength and the fracture toughness are 786 MPa and 8.6 M…
The reaction injection moulding process was employed to prepare montmorillonite (O-MMT)/polyamide 6 (PA6) nanocomposites. O-MMT was functionalised by aminosilane in order to improve the compatibility and decrease the viscosity of caprolactam melts, which swell O-MMT. Small angle X-ray diffraction and transmission elec…
The accuracy of pre-launch VIIRS response versus scan angle (RVS) characterization is vitally important to the quality of calibrated radiance products. The RVS correct the optical system’s scan angle dependency with respect to the calibrator scan angle. In this document, we describe the methodology used in JPSS-1 RSB…
Determining the number of molecules in a given assembly, such as the number of proteins in a toxic aggregate, is often critical to understanding chemistry and function. Herein, we report a variation of a limitless method for counting photoactivatable fluorescent dyes in which single dye molecules are photoswitched to…
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In this paper, the hollow spindle receives self-twist modifying treatment, which makes the surface friction coefficient of the hollow spindle increase. When the sliding friction torque is enough to overcome the torsional stiffness of the fiber, under the force of the high-speed airflow, the fiber scrolls on the surfac…
We report on electrical characteristics of HfO2/Al2O3 gate dielectric on InGaAs as a function of Al2O3 ALD cycles. We also investigate the effect of a NH3 treatment in a 300mm PEALD chamber equipped with a capacitive plasma. It is shown that 8 Al2O3 cycles are required to achieve a high level capacitance (1.75μF/cm²)…
Gentamicin and streptomycin aminoglycozide antibiotics, were determined using new selective spectrophotometric methods based on the formation of stable ion association complexes with methyl red dye in alkaline medium. These complexes can be extracted with chloroform at (pH = 8.5) after that the absorbance of the color…
The aim of this study is to evaluate the effects of nanoporous anodic aluminum oxide (alumina) with pore diameters from 15 to 40 nm on osteoblasts (hFOB) and fibroblasts (HFF). After 7 days, a significantly higher proliferation of osteoblasts with a regular cell morphology is visible on the 40 nm samples compared to t…
Abstract We discuss the findings of a recent optical design study into layered polymeric gradient index lenses (known as L-GRIN). A range of GRIN singlet lenses were designed for various aperture and field-of-view configurations. Their optical performance was compared to polymer diffractive lenses and glass-cemented d…
Tris(8-hydroxyquinoline) aluminum [Formula: see text] nanostructures are promising materials for nanooptoelectronic devices and molecular spintronics. In this paper, we report [Formula: see text] nanocrystals prepared by both physical vapor deposition (PVD) and facile solution method. The transmission electron microsc…
We study the zero-temperature ground-state (GS) properties of the spin-1/2 anisotropic planar pyrochlore, using the coupled cluster method (CCM) implemented to high orders of approximation. The system comprises a J 1-J 2 model on the checkerboard lattice, with isotropic Heisenberg interactions of strength J 1 between…