This work is devoted to the theoretical study of the temperature dependence of the blocking, the coercive force of the spontaneous magnetization and the size of the magnetite core core / shell nanoparticles of magnetite / titanomagnenit. It is shown that the coercive force and the saturation magnetization...

In this work, we show our results of the theoretical study of the hysteresis characteristics of a system of interacting Fe/Fe3O4 core/shell nanoparticles. We show that increase of the volumetric concentration of nanoparticles lead to decrease of the coercive field and remanent saturation magnetization....

The models of electro-physical effects built-into Sentaurus TCAD have been tested. The models providing an adequate modeling of deep submicron high-k MOSFETs have been selected. The gate and drain leakage currents for 45 nm MOSFET with PolySi gate and SiO2, SiO2/HfO2 and HfO2 gate dielectrics have been...

Initially, a contact between a rigid rough surface and a homogeneous elastic half-space without taking into account the mutual influence of microasperities is considered. To determine the dependence of the density of gaps in the joint on dimensionless the force elastic geometrical parameter, the discrete...

The effects of Al substitution for Fe on the structure, magnetism, magnetostriction, anisotropy and spin reorientation of a series of Tb0.3Dy0.6Pr0.1(Fe1-xAlx)1.95 alloys (x=0. 05 0.1 0.15 0.2 0.25 0.3) have been investigated. The alloys of Tb0.3Dy0.6Pr0.1(Fe1-xAlx)1.95 substantially retain MgCu2-type...

Properties of composite materials with different matrices and disperse phases are greatly affected by phenomena occurring at the phase boundary with largest area. This is a boundary between matrix and fine filler. Numerous processes take place during preparation, homogenization and curing of the thermoset...

-In the Song dynasty, brick-paved streets mainly emerged in the southern cities dealing with rainy weather and slippery road surface. This article discusses some brick-paved streets of the southern cities, such as Chengdu, Junzhou, Yangzhou, Hangzhou and Guangzhou. These streets were often slightly convex...

The Micro-Grooved Element (MGE) is a novel acoustic solution for noise control aiming to provide high sound absorption coefficient with cost effective technology. In this paper the main characteristics of the MGEs are described, including the geometry and the impedance model. The non-linear part of the...

This research is intended to address the cases retrieval phase related to a CAPP system for axisymmetric solid parts supported by the Case Based Reasoning (CBR). The traits of similarity between two parts were identified from the characteristics of the stock and the finished part. As a result of this...

Pd/C, Ni/SiO2-Al2O3 and Ru/C were used for hydrogenation of phenol in supercritical alcohol system. The results indicate that Pd/C is an efficient catalyst for hydrogenation of phenol in supercritical alcohol system, over 80% phenol was removed at initial 40 min and cyclohexane, cyclohexanol and cyclohexanone...

The different particle sizes’ nano silica spheres are synthesized by the TEOS hydrolysis method. The XRD patterns testified that the sample is single phase and its strongest peak is significantly broadened. From the photos of TEM we can see that the samples’ surfaces have a good dispersion and uniform...

In order to study the effect of shot peening on water vapor oxidation resistance of austenitic stainless steel TP347H, spare reheater tube of a certain power plant is made into the experimental sample, and part of the samples have been shot blasted, the experimental samples are used to do the contrast...

The design of 3.7GHz ceramic window is needed in the Lower Hybrid Current Drive (LHCD) system of Experimental Advanced Superconducting Tokamak (EAST). The material of ceramic disk chooses BeO which owns low dielectric constant, low loss tangent and high thermal conductivity. RF results obtained from...

In this paper, using aniline, lauryl alcohol and nonanoic acid as the structural controlling reagents, hierarchical mesoporous TiO2 microspheres composed of connected nanoparticles are synthesized via a coupled sol-gel and solvothermal process. The dye sensitized solar cells (DSSCs) with the mesoporous...

Using rare earth oxides, aluminum nitrate and gelatin as raw materials, YAG:Eu3+ based luminescent materials were successfully synthesized by gel-network co-precipitation method. The formation and luminescent properties of YAG:Eu3+ was investigated by means of fluoresce spectra. For YAG:Eu3+, the differences...

This paper have compared the properties of UHMW-PMMA film with GMW-PMMA film in terms of contact angle, gas permeability, heat resistance, surface resistance changes by surface modification of UHMW-PMMA film like thermal treatment, acidation and alkalization modification. All the datas showed that UHMW-PMMA...

To discovery alternative sources of energy besides fossil fuels becomes necessary looking for the space. In the space, there is an abundant energy resource: The solar radiation. Solar Sails have long been envisaged as an enabling technology because is a promising low-cost option for space exploration...