Search results

Comparative Study on the Impurities Content of Hydrogenated Transformer Oil Under Static Condition Yihua Qian1,a, Yibin Huang 2,b, Qiang Fu1,c, Haiyan Wu2,d, Zhensheng Zhong 2*,e 1Electric Power Research Institute of Guangdong Power Grid Corporation, Guangzhou,China 2College of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou,China aqianyh2001@163.com, bybhuang615@126.com, c13926402226@163.com, d540240482@qq.com, echszhong@scut.edu.cn Keywords: hydrogenated transformer oil; naphthenic transformer oil; impurities content; determination Abstract.
Experiment 1.1 Materials Four kinds of transformer oil were collected from the market (listed in Table 1).
And the instrumentation is SPEC SPECTRO LNF Q200 made in America. 1.2.3 Test of Corrosive Sulfur The tests are carried out according to ASTM D1275 B-2006 [8]. 1.2.4 Test of Sulfur Content The tests are carried out according to GB/T 17040-2008 [9].And the oil samples are determined by Guangzhou Mechanical Engineering Research Institute. 1.2.5 Test of Acidity The tests are carried out according to GB/T 264-83 [10]. 1.2.6 Test of Interfacial Tension The tests are carried out according to GB/T 6541-86 [11].And the instrumentation is Auto Tension Tester ZHZ501 made in Shandong,China.
Acknowledgement This work is financially supported by Key Research Project of Guangdong Power Grid Corporation (K-GD2011-377).
Power System Engineering.

Research on interlinkage mechanism of Net-manufacturing in Eco-industrial System (EIS) Zhongdong Xiao, Guanghui Zhou 1School of Management, Xi’an Jiaotong University, Xi’an, China 2State Key Laboratory for Manufacturing Systems Engineering,Xi’an, China xzd@mail.xjtu.edu.cn,ghzhou@mail.xjtu.edu.cn Keywords: Eco-industrial system; Game theory; Net-manufacturing Abstract.
Related theoretical research focused on the following aspects: 1, the coordination of material and energy recycling in eco-industrial systems [3]; 2, the practice of eco-industrial systems [4]; 3, the operational efficiency of eco-industrial systems[5]; 4, the support mechanism of eco-industrial systems[6].
Investing on environment-friendly production line which can take the pollutants as a raw material to reproduce
It relies on coal and electrical resources, takes coal and other resource development, energy conversion and utilization as the development direction, and develops electric power, coal chemical industry, metallurgy, new building materials and energy carriers industries and other industries.
Jinlong Cement uses the carbide slag (including waste water) discharged from Beiyuan and fly ash discharged from Yahua and Guohua Power Companies as the main raw materials(about 95% of the total cement raw materials), and produces cement with adding a small amount of red mud and iron powder.

Enhanced Cr (VI) Removal from Landfill Leachates using Nanoscale Zero-valent Iron Liu Tingyi1,a, Wang Zhong-Liang1,b, Yan Xiaoxing1,c 1Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China aliuty819@163.com, bwangzhongliang@vip.skleg.cn, cmicki_yan@163.com Keywords: Hexavalent chromium; Nanoscale zero-valent iron (NZVI); Humic acid (HA); Landfill leachates; Critic acid Abstract.
Due to the small particle size, large surface area, and high reactivity, nanoscale zero-valent iron (NZVI) has been demonstrated for potential use in environmental engineering [5, 6].
Various materials have been found to be effective, including thiols, surfactant, and polymers [8, 13].
However, not all of these materials are applicable to the interest of nanoparticles.
Materials and Methods Materials The following reagents were used in this study: HA, K2CrO4, NaOH, NH3·H2O, citric acid, deionized (DI) water (analytical grade, First Chemical Reagent Manufactory), and NZVI particles (99%, mean diameter: 80 nm, commercial grade).

Production of a Fibrinolytic Enzyme from Coprinus Comatus YY-20* Xiaolan Liu1, Xiqun Zheng1,Juan-kun Zhang2 1Heilongjiang Provincial Key University Laboratory of Processing Agricultural Products; College of Food and Biological Engineering,Qiqihar University,Qiqihar, Heilongjiang Province 161006, China 2College of Bioengineering Tianjin University of Science and Technology,Tianjin 300222,China 1Liuxiaolan001@126.com Keywords:Coprinus comatus; Fibrinolytic Enzyme; Fermentation; liquid culture.
II.Materials and Methods A.
Materials and chemicals Bovine fibrinogen, agarose were purchased from Sigma Chemical Co.
The effect of nitrogen source on production of fibrinolytic activity, as shown in Table 1, indicated that soybean cake powder, soybean powder and hydrolysate of soybean by limited hydrolysis were proper materials for production of the enzyme by Coprinus comatus YY-20.
That soybean protein was used as materials for production of fibrinolytic enzymes by microorganism was also reported by several research groups [1,4,5,6,7,8,11,20].

Introduction Equipment battlefield repair has the characteristics of urgent time, heavy task, harsh environment and constrained resources, so the key to win the high tech war is to recover effectively combat performance in the shortest time.
It is a great conflict. 3) The quick equipment’s renewal speed, insufficient security personnel ability, scarce repair materials and battle damage assessment, all bring difficulties and obstacles for equipment’s repair.
The fifth level of standard solution can also be considered to have strong constraints on introducing and interaction of new material.
Improving design, and looking for standard materials; If anyone has solved a similar problem?
Manufacture Information Engineering of China (2011)

Clarke3 1 Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439; almer@aps.anl.gov 2 Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125 3 Materials Department, University of California, Santa Barbara, CA 93106 Abstract Synchrotron x-rays are used for in situ determination of oxide strain, during oxide formation on a Kanthal A1 FeCrAlZr substrate at 1160°C.
This has made FeCrAl based alloys a model material for studying stress generation during oxidation.
The formation of a thermally grown oxide is also important for thermal barrier coating (TBC) applications, in which zirconia coatings are applied to an alloy substrate, and a bond coat is used between the two materials.
Understanding the oxide formation and the stresses generated consequently are crucial to determining the lifetime of such material systems.
Metallurgical and Materials Transactions A, 2000. 31A: p. 2949-2962. 5.

Microstructure, Densification and Mechanical Properties of TiB2-TiC-NiAl Ceramic-Based Composite Weiguo Wang, Lei Zhang and Xiaoliang Zhang Science Research Department, Mechanical Engineering College, Shijiazhuang, China Wangweiguo2015@aliyun.com Keywords: TiB2-TiC composite; densification; microstructure homogeneity; composite additive Abstract.
Introduction Because of high melting temperatures, high degree of covalent bonding and low self-diffusion coefficients of TiB2 and TiC, the achievement of full-density TiB2-TiC composites requires long exposures at high sintering or hot-pressing temperatures, so high processing temperature adversely affects the microstructure due to grain growth and also lead to high cost of the materials.
Recently, Zhao et al [2] introduces combustion synthesis into high gravity field to induce thermal explosion reaction, successfully prepared near-full-density TiC-TiB2 composites with fine-grain even ultra-grain microstructures by liquid forming and rapid solidification, and the selection of the additives was considered to one of key factors affecting the microstructures and properties of solidified TiC-TiB2 composites.
Experimental Raw materials high-purity (>98%) B4C powder with particle size < 3.0 µm and high-purity (>99%) Ti powder with particle size < 30 µm were used to constitute the primary system as shown in Eq. 1, while Ni and Al powder with purity > 99% and particle size < 30 µm were used to constitute the composite additive, as shown in Eq. 2.
Because ambient hardness of the ceramic composite change linearly with elastic modulus of the materials, the dependence of the hardness of the ceramic composite on mass fraction of Ni-Al composite additive is considered to result from the corelation of the densification of the materials and Ni-Al composite additive.

Wang 3,f 1 Dept of Mechanical Engineering, Linköping University, S-58183 Linköping, Sweden 2 Studsvik Neutron Research Laboratory, Uppsala University, S-61182 Nyköping, Sweden 3 School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China 4 Sandvik Materials Technology, R&D, SFM, S-81181 Sandviken, Sweden a rulin@ikp.liu.se, bydwang@mail.neu.edu.cn, c guocai.chai@sandvik.com d jianan_ahead@126.com, e stejo@ikp.liu.se, f wanggang@mail.neu.edu.cn KEYWORDS: Duplex stainless steel, lattice strains, in-situ loading, neutron diffraction, grainorientation-dependent stresses, inter-phase stresses Abstract.
It has been well established that both elastic and plastic anisotropy in a polycrystalline material can contribute to a TD ND 40 o ψψψψ non-linear ε-sin2ψ distribution [4,5].
Material and experiment A super duplex stainless steel, SAF 2507 with nominal chemical composition (wt. %) of 25 Cr, 7 Ni, 4 Mo, 1.2 Mn, 0.8 Si and 0.3 N (remainder Fe) was used in this study.
The legend key gives the applied stress in compression and "u" refers to the unloading state.
Moverare and Manus Odén: Metallurgical and Materials Transactions Vol. 31A (1999), p. 1557 [2] A.

This is because different materials have different tolerance level on temperature rise.
Methodology Materials.
The packing material was stainless steel Flexipac 1Y (Koch-Glitsch) with packing height of 1.0 m.
[2] IEA, CO2 Capture and Storage: A key carbon abatement option, International Energy Agency, France, 2008
Bustam, Investigation on Factors Affecting Absorption Column Temperature Rise during CO2 Capture Process using Response Surface Methodology, presented in International Conference on Process Engineering and Advanced Materials (ICPEAM2012), Kuala Lumpur (2012)

Physical Modeling In this study, the raw materials used were tin (99.3ωt% Sn, 0.7ωt% Cu) and magnesia refractory mould (95.85ωt % MgO, 2.15ωt % Al2O3, 2ωt % Si).
The surface of the mould was covered with insulating material which slowed down the cooling rate, and the heat is dissipated through the mould and the heat insulating medium.
●The materials in each solid phase and liquid phase have isotropic and uniform.
Other thermal parameters used for calculation Material Sn Refractory mould Insulating material Density（g·cm-3） 7.28 2.97 0.17 Thermal conductivity（W·m-2·°C -1） 62.6 - 0.17 Heat capacity（J·kg-1·°C -1） - - 1371 The insulating material transfers heat to the surrounding air by a combination of thermal convection and radiation.
Proceedings of the 51st Conference on Glass Problems: Ceramic Engineering and Science Proceedings. 12(2008) 496-517