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Online since: July 2012
Authors: Run Cang Sun, Deng Shan Bao, Chuan Fu Liu
Preparation of Cellulose Succinates with High Degree of Substitution in Solvent System [C4mim]Cl/DMSO Deng-Shan Bao1, a, Chuan-Fu Liu1,*,b and Run-Cang Sun1,2,c 1State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China 2College of Material Science and Technology, Beijing Forest University, Beijing, 100083, China abaodengshan@gmail.com, bchfliu@scut.edu.cn, crcsun@scut.edu.cn, *Corresponding author Keywords: Cellulose, Ionic liquid, Succinate, Catalyst Abstract.
On the other hand, modification of cellulose with cyclic anhydride such as succinic anhydride are widely used to produce water absorbents for soil in agriculture, natural absorbents for the removal of heavy metal ions in wastewater treatment, medicine for drug delivery systems, and thermoplastic materials [11].
Experimental Materials.
Online since: July 2013
Authors: Zhi Lin Wang, Hong Xia Liang
Effect of Indium Addition on the Electrochemical Behavior of Zinc Electrodes In Concentrated Alkaline Solutions Liang Hongxia 1,a, Wang Zhilin 2,b 1Department of Resource and Environmental Engineering, Panzhihua University 61700,china 2State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry,Xiamen University, Xiamen 361005 China aemail:370499524@qq.com, bemail: 545942766@qq.com.
Introduction zinc has a wide variety of applications as a negative electrode material in Zn-Mn, Zn-Ag, Zn-Ni and Zn-air batteries [1-28],because of its equilibrium potential, good reversibility, high specific energy and volumetric energy density, low cost and low toxicity.Secondary zinc batteries is a promising candidate in electric vehicle applications, military and commercial aircraft[29].
The role of indium in a porous electrode must be more complex than in a bulk material studied in this paper.
[5] McBreen, J., and Cairns, E.J.: The zinc electrode, in Advances in Electrochemistry and Electrochemical Engineering, Vol. 11, H.
R., and D, Alkaline, C.V.: The passivating films of zinc in alkaline solution, Key Eng.
Online since: February 2013
Authors: Wei Han, Luo Jun Gong, Qian Qian Yan, Xiao Xiao Wang
The Microbial Diversity Analysis of Constructed Wetland Wastewater Treatment in Village Xiaoxiao Wang1,3,a, Luojun Gong1,2,b, Wei Han1,c, QianqianYan1,d 1 Wuhan Water & Sky Biology-Environmental Engineering co.
The study on microbial diversity as the key factor in biological reaction is important for wetland wastewater treatment system application.
Material and method Watewater treatment system The constructed wetland wastewater treatment system is built in Fasi village in WuHan, and the inflow is domestic sewage from Wuhan galaxy ecological agriculture Co., LTD and residents nearby.
Material. sbacterium, BHI fluid nutrient medium, 1.5mlEP tube, PCR tube, micropette plus, electrophoresis apparatus, SC-B and gel imaging system.
Chinese Journal of Environmental Engineering,2008,2(8):1044-1047(in Chinese) [12] Yun Ling,Jing Lin,Yatong,Xu.Microbial communitychanges in reed constructed wetland in different seasons[J].
Online since: October 2013
Authors: Jie Chen, Xue Jun Yang, Zhen Kun Lin, Kai Yan Lin, Jun Hui Wu, Hui Ping Si
Research Progress of Biochar, Pyroligneous Acid and Organic Fertilizer Mixture and its Components in Agricultural Production Xuejun Yanga, Zhenkun Linb, Jie Chenc*, Junhui Wud, Huiping Sie, Kaiyan Linf National Engineering Research Center of Protected Agriculture, Modern Agricultural Science & Engineering Institute, Tongji University, Shanghai, 201804, China ake_ti_5@aliyun.com, biflzk@163.com, c1968chenjie@163.com, djunhui_wu@163.com, esihuiping@tongji.edu.cn, fky.lin@163.com Keywords: Biochar, Pyroligneous Acid, Organic Fertilizer Abstract.
Carbonized materials were formally used as soil amendment material in Japan, and it was a common practice to apply the PA together with biochar.
Besides, PA effected even better in the combination of organic fertilizer than chemical fertilizer due to its high acidity and various materials that it contented.
Acknowledgements This paper was sponsored by National Engineering Research Center of Protected Agriculture (2011BAD43B00) and key scientific research project of Shanghai (Project No. 11DZ2211104) and Fundamental Research Funds for the Central Universities.
Biomass Chemical Engineering 1994, 6: 36-37(In Chinese)
Online since: October 2014
Authors: Janusz Pobozniak
Automation of CNC machine tool programming using STEP-NC (ISO 14649) Janusz Pobozniak Institute of Production Engineering, Cracow University of Technology, Al.
These exact models allow to exactly check the amount of materials still remaining on the part, the amount of material removed due to programming errors or the find all collisions between the tools and part.
Very often, the material is removed using the 50 percent of the tool diameter (ae parameter).
In the mechanical engineering domain, this includes the information about the materials, shape and location tolerances, product structure, manufacturing features [7], manufacturing and assembly processes.
The key factor is ISO 10303 standard normalizing the information about the product, including all non-geometric information as well as STEP-NC (ISO 14649) data model allowing for the greater autonomy of CNC systems.
Online since: March 2011
Authors: Xiao Yan Wang, Shao Yan Fan
Decorated materials were repeatedly modified.
During the process of construction, design drawings have been modified multiple times, construction materials have been replaced, and reconstruction has been needed many times.
Multiple departments are needed to take part in such as commercial banks, investigation design, project inspection, facility rental, materials supply, construction and operation and manufacturing and so on.
b).Each production elements of project, including labor, materials, equipments, field and expenses and so on.
Schedule control is not any longer the time control conventionally but unifies the time with project materials, cost, labor consumption and resources.
Online since: July 2018
Authors: Jeng Haur Horng, Shin Yuh Chern, Hung Jung Tsai, Cheng Han Tsai
Introduction All engineering surfaces are rough; when two surfaces slide over each other, these rough surfaces will cause a rise in contact spot temperatures.
During the high speed transient process, the micro-temperature of peak contact spots has a different distribution, and affects the adhesion and tribology properties of materials under different operating parameters.
Furthermore, surface temperature is one of the causes of the surface failure of electrical, semiconductor, and mechanical systems, such as in railway engineering [4,5].
All topographies of engineering surfaces have multiple peaks; however, most contact temperature analyses focused on temperature distribution and asperity distortion of a single peak.
Because of the roughness geometry of engineering surface is so complexed, most of the past micro-contact models assume that the peaks are spherical, sinusoidal or elliptical.
Online since: December 2014
Authors: Ling Yun Gong
Guangzhou China, 510430 381200308@qq.com Key words: slender bar; cutting parameters optimization; improved artificial bee colony algorithm Abstract: Improved artificial bee colony algorithm is proposed to solve the problem that how to select proper cutting parameters in multi-processing of slender bar in this passage.
According to Taylor formula, tool life Tr and Tf are expressed as the following two formulas: (11) in the above formula, CT represents coefficient of tool life, which is subjected to tools, materials, processing and cutting conditions.
The cutting tool is YT15 carbide, the tool geometry parameters are shown in Table 1, processing parameters are shown in Table 2, and processed material is 45 steel rod.
Modern manufacturing engineering, 2006(10):37~38 ( In Chinese) [4]N.
International Journal of Machine Tools & Manufacture. 2007,47:900∼919 ( In Chinese) [5]Qiang Wang .Advanced Materials Research,2011(8):418-420 ( In Chinese)
Online since: January 2012
Authors: Guo Qing Zhong, W. Zhong, Y. Zhang, Q. Zhong
Zhong State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China (zgq316@163.com) Keywords: amino acid Schiff base, solvent-free synthesis, thermal decomposition, zinc complex Abstract: Three zinc(II) complexes of the amino acid Schiff base were synthesized by the one step reaction of amino acid with aldehyde, zinc acetate in solvent-free.
As a functional material, the zinc complexes of Schiff base have been widely used in industry and pharmacy [7].
Experimental All chemicals used in the experiments are analytical or biochemical reagents as received from commercial sources with no further purification. 0.5559 g (5 mmol) leucine and 0.2806 g (5 mmol) KOH were weighed and pestled until they became moist in agate mortar for 1 minute. 0.52 mL (5 mmol) freshly distilled salicylaldehyde was dropped into agate mortar with uninterruptedly pestling, the color of the starting material turned to yellow quickly, stop the grinding after 30 minutes later, the amino acid salicylaldehyde Schiff base was synthesized completely at the first step.
Online since: June 2017
Authors: Bao Liang Shi, Wen Sheng Li, Jian Ping Zhao, Kai Xu, Yang Liu, Ai Ren, Yan Li, Cheng He
The yield strength of the aged alloy is mainly influenced by the precipitation hardening, solution strengthening and the inherent strength of the material, it can be usually expressed by the following expression [14]: (1) Where , , are the contributions of precipitation hardening, solution strengthening and pure matrix to the yield strength respectively.
Besides, the occurrence of many large carbides at the grain boundaries after long time service also plays a key role in the tensile strength.
Komai (Eds.), Proceedings of the 6th International Conference on Materials for Advanced Power Engineering, Liege ForschungszentrumJulich GmbH, Aachen,1998, p. 61
[12] J.E.Hong, G.Feng, Metal Materials and Training in Power Plant, China Machine Press, Beijing, 2012, 139-140
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