Materials Literature
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Steel material may be considered one of the most significant materials in different mechanical engineering applications because it is the foremost component in the different mechanical industries and structure of buildings . Boron steels are suitable for varied applications , Diverse elements of metals have been alloy…
柴油车热效高，功率大，具有良好的经济性和可靠性，所以柴油车的生产现已得到突飞猛进的发展。但柴油车尾气的排放破坏了大气的臭氧层，造成了环境污染，对柴油车尾气的净化处理势在必行。介绍了脱除柴油车尾气NOx催化剂的生产工艺，催化原理及催化剂的组成，并在模拟装置上活性测试。产品满足国Ⅳ排放标准。 Diesel has a good economy and reliability, with a high thermal energy efficiency and a large power, so a large of diesel is produced. However, diesel exhaust destroys O3 atmo…
Surface treated copper foil and its preparation is very important and widely used. The science research and enterprise competition always focus on the surface treated methods in the copper foil field. This paper summarized the typical surface treated processes of copper foil, and emphasized on research progress and pr…
本文制备六种不同分子量和末端基团的载鲑鱼降钙素PLGA微球(SCT-PLGA MS)，优选合适微球用于废用性骨质疏松症在骨折损伤部位缓释药物。载药微球平均粒径均为120 μm，形态圆整；包封率均高于60%，载药量约为0.5%；差示扫描量热(DSC)测试结果表明SCT包载在于PLGA微球中，并以无定形态存在；体外释放结果表明分子量为20 kDa的-COOH末端载药微球(SCT-PLGA-20 COOH MS) 40 天累积释放百分率达79%以上，具有良好的缓释作用；体外降解中SCT-PLGA-20 COOH MS pH值随时间延长下降速率高于其他微球。因此，本研究中SCT-PLGA-20 COOH MS有望用于治疗废用性骨质疏松症。…
Pitting corrosion in conjunction with fatigue has been a great concern for structural integrity of aluminium alloys that are being extensively used in offshore applications due to their unique properties, high strength-to-weight ratio compared to other materials. This study aims at investigating corrosion fatigue beha…
Ammonium fluoro antimonate (NH 4 ) 3 Sb 4 F 15 crystals were grown by solution method and various properties of grown crystals were analyzed by various experimental tools. The structural study of the grown crystal was carried out by XRD analysis and crystal structure was identified. The vibrational frequencies of of v…
1020 steel is a material very used for surface treatment in the abnormal glow discharge. Because the composition of the gaseous atmosphere has an important influence on the results of plasma treatment, in this work the oxidation process of 1020 steel is verified on the abnormal glow discharge under different concentra…
The present thesis deals with the investigation of geomaterials and processes on a molecular scale. Several application examples show how molecular sim- ulation can augment and enhance our understanding of processes of the deep earth’s interior. All examples describe parts of the processes of mineral-melt interactions…
In this research, zinc oxide (ZnO) films were prepared by thermal evaporation method at temperature between 400-600°C for 60 min. Then, ZnO films were deposited by nitrogen cold plasma technique. The power, frequency and voltage of plasma generated at 100 W, 50 KHz and 5 KV, respectively. These films were deposited by…
Structural stability of 4dtransition metal dicarbides (TMC 2 ) is analysed among the different phases, tetragonal (P4/mbm), fluorite (Fm3m), orthorhombic (Pnnm), pyrite (Pa-3), and hexagonal (P6/mmm) using first principles calculations. The most stable structure for these carbides is found to be hexagonal structure. T…
This paper is concerned with the overview of project based on the theoretical study and analysis of expansion process of a cold storage using Taguchi analysis. The objective of th is study is to illustrate how change in entropy (S) in expansion process is effected by several parameters or control factors of refrigerat…
Carbon-doped Ti-O films were deposited on steel and silicon wafer by DC reaction magnetron sputtering (R-MS) using CO2 as carbon and oxygen source. A series of films were prepared by means of changing the flow of CO2 or O2. The effects of annealing temperature ranging from 300 to 650°C on the properties of Ti-O films…
Scientists in Germany and South Korea say they have improved a key component of energy storage systems that has the potential to aid their development. Their research shows that a membrane produced from a hydrophobic polymer of intrinsic microporosity can be used as a proton conducting separator in an all-vanadium red…
This work aims to study the mechanical properties of two kinds of hydrogels, the first is based on natural polymers derived from decellularized bovine cartilage tissue and the second is based on synthetic polymers namely polyethyleneglycole dimethacrylate. In this project, we tried on the one hand to reinforce the hyd…
Checking procedures for processed nuclear data at Los Alamos are described. Both continuous energy and multi-group nuclear data are verified by locally developed checking codes which use basic physics knowledge and common-sense rules. A list of nuclear data problems which have been identified with help of these checki…
This research is focused on the synthesis and characterization of a perovskite oxide based on La 0.8 Sr 0.2 CrO 3 system by the combustion method. The material was obtained in order to contribute to analyse the effect of synthesis route in the obtaining of advanced anodic materials for solid oxide fuel cells (SOFC). T…
A novel zinc metal organic frameworks, named ZnL(2,2′-bpy), has been successfully synthesized, serving 3,6-dicarboxylic-9-ethylcarbazole acid (H2L) as ligand. This kind of ZnMOFs was characterized by FI-IR, elemental analysis, SEM, powder X-ray diffraction and single crystal X-ray diffraction to illustrate the structu…
Dielectric, Electric and Thermal properties of rare earth La 3+ material doped in Co 0.5 Zn 0.5 La x Fe (2- x) O 4 (where x=0.025, 0.050, 0.075, 0.100, 0.125) reaction nanocrystalline ferrites were synthesized by sol-gel auto combustion method. The electric, dielectric constant and Thermal properties were investigated…
Cu-Ag alloy nanoparticles were synthesized by a liquid phase reduction method. Using sodium formaldehyde sulfoxylate (SFS) as reducing agents, copper-silver bimetallic nanoleaflets with high content of Cu were prepared. The obtained Cu-Ag bimetallic nanocrystal were characterized by powder X-ray diffraction (XRD), ene…
In the present research a web application is designed and implemented allowing us to calculate the dose of implanted ions on solid substrates from experimental parameters (repetition rate and pulse duration of current, potential difference, work pressure and treatment time) and current pulses acquired during start-up…