Materials Literature
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Using the parabolic model of the electronic spectrum of the substrate and the low-energy approximation of the dispersion law for two-dimensional hexagonal compounds A N B 8‒N , the density of states of an epitaxial layer has been investigated as a function of the band gap of the substrate, the band gap of the graphene…
Pressure pipes are widely used in modern industry with some in potentially dangerous situations of explosion and impact. The security problems of these pipes when subjected to impact have attracted a lot of attention. A non-linear numerical model has therefore been developed to investigate the dynamic behavior of pres…
An efficient multipaction suppression method in microwave components for space application* , Cui, Wan-Zhao, Li, Yun, Yang, Jing, Hu, Tian-Cun, Wang, Xin-Bo, Wang, Rui, Zhang, Na, Zhang, Hong-Tai, He, Yong-Ning
Abstract The effects of increasing nickel contamination of soil on the update of selected microelements by Brassica juncea L. in the presence of raw halloysite (RH) and halloysite modified by thermal treatment (calcination) at 650°C (MH) were investigated experimentally. Such treatment causes partial dehydroxylation a…
Abstract In this paper, ionic gelation method was adopted to produce nanocapsules (CNs) encapsulated tuberose fragrance with chitosan (CS) and sodium tripolyphosphate (TPP) as wall materials. The effects of CS/TPP mass ratio, pH value of CS solution, molecular mass of CS and tuberose fragrance (TF) concentration on pa…
A parallel algorithm for large-scale three-dimensional phase-field simulations of phase coarsening is developed and implemented on high-performance architectures. From the large-scale simulations, a new kinetics in phase coarsening in the region of ultrahigh volume fraction is found. The parallel implementation is cap…
The gas phase hydration of glyoxal (HCOCHO) in the presence of sulfuric acid (H2SO4) were studied by the high-level quantum chemical calculations with M06-2X and CCSD(T) theoretical methods and the conventional transition state theory (CTST). The mechanism and rate constant of the five different reaction paths are con…
Zirconia (ZrO 2 ) as a ceramic biomaterial facilitates the osteoconductivity in new bone formation around implant. In order to improve the degradation and the surface properties, it is necessary to apply a surface film to satisfy multiple clinical requirements such as mechanical strength, biocompatibility, and degrada…
In order to detect the ultra-high-frequency (UHF) signals generated from partial discharges (PDs) in high voltage switchgear, a microstrip antenna sensor is designed. Influences of geometric parameters on the capability of the proposed antenna sensor are researched by numerical simulation. Measured characteristic resu…
Simulation of processes in an electromagnetic converter with energy loss in the massive magnetic core is necessary for improvement of converter dynamical models with respect to the energy loss caused by eddy currents and hysteresis. An electromagnet with fixed core position is used as a test model. The energy loss mat…
Trigonal: R3c a = 10.456(7),c = 37.41(3) Å 6.52(s), 5.24(m), 3.46(s), 3.21(s), 3.02(m), 2.88 (vs), 2.75(m), 2.62(vs)
A banana particulate reinforced polyvinyl chloride (PVC) composite was developed with considerabley low cost materials having an overall light-weight and good mechanical properties for potential application as piping material. The specimen composite material was produced with the banana (stem) particulate as reinforce…
We have provided the Cu doped zinc sulfide (ZnS:Cu) nanoparticles using a wet chemical synthesis.In principle, the nanoparticles are provided by mixing the reactants in a double distilled water solvent.We have used the mercaptopropionic acid as the capping agent.We have obtained the physical properties of the nanopart…
In this work, the structural, electronic properties, 14 N NQR parameters and first hyperpolarizability of W(CO) 5 L, L=(4-pyridylmethylene)malononitrile complex were computed in gas phase by hybrid functional PBE method with LanL2DZ, and 6-311G(d,p) basis sets for transition metal and man group elements, respectively.…
Equal channel angular rolling process is defined as a severe plastic deformation method that imposes very large plastic strain on a material in order to enhance its mechanical properties and grain structure refinement. In this study, residual stress profiles through the thickness of St12 strips that were subjected to…
Common reasons for local failures in power transformers are partial discharges (PD) in the electric insulation. The ultra-high frequency (UHF) PD measurement method gained in importance for transformer diagnosis and monitoring within the last years. Due to its robustness against external noise, it is suitable for both…
It is shown that the spectral properties and spatial distribution of LED radiation with a YAG:Ce single crystalline luminescent converter significantly depend on the morphology of the converter surface. The variation of surface roughness enables one to obtain a light source with a wide range of color characteristics.…
Cobalt oxide (Co3O4) nanorods were prepared by a simple co-precipitation method using ethanol solution of cobalt nitrate as precursor and cetyl trimethylammonium bromide (CTAB) as surfactant. Morphological properties of the nanoparticles were characterized. XRD measurement exhibited the structure of Co3O4 nanocrystals…
In graphene, conductance electrons behave as massless relativistic particles and obey an analogue of the Dirac equation in two dimensions with a chiral nature. For this reason, the bounding of electrons in graphene in the form of geometries of quantum dots is impossible. In gapless graphene, due to its unique electron…
When the high voltage direct current (HVDC) system operates in monopole ground-return mode, DC current flows through the neutral of AC power transformer with the neutral grounded which exacerbates the vibration of the transformer. During the field test of Yibin-Jinhua HVDC system in China, the vibration detection syst…