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FISH检测中国主要油页岩矿区微生物相对丰度王文星1,蒋绍妍2,薛向欣2,侯晓娇11. 东北大学生命科学与健康学院2. 东北大学冶金学院摘 要:用荧光原位杂交(FISH)技术调查了我国主要油页岩矿区(辽宁抚顺,吉林桦甸和广东茂名)中砂土,新鲜油页岩和风化油页岩或砂砾岩样品的细菌和古细菌相对丰度.油页岩微生物的杂交优化反应条件:杂交温度为46℃,杂交时间为2.5 h,杂交液中去离子甲酰胺的体积分数为20%时,TRIzol和溶菌酶共处理方式有利于提高杂交率.各类型样品中,细菌相对丰度均在50%以上,古细菌相对丰......
Natural-ageing-enhanced precipitation near grain boundaries in high-strength aluminum alloyPeipei Ma1,Chunhui Liu1,2,Qiuyu Chen2,Qing Wang1,2,Lihua Zhan1,2,Jianjun Li21. Light Alloy Research... of the age hardening potential at elevated temperatures. Natural ageing could fundamentally alter the precipitation near grain boundary, and is a promising method to optimize the precipitation hardening......
Precipitation behavior of B2-like particles in Fe-Cu binary alloyHuiping Ren and Weimin Mao1) Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China2) Department of Materials Science and Engineering, Baotou University of Iron and Steel Technology, Baotou 014010, Ch摘 要:The precipitation behavior......
Effects of RE and Sr additions on dendrite growth and phase precipitation in AZ91D magnesium alloy ZHOU Ji-xue(周吉学), WANG Jie(王 杰), WANG Jing(王 晶), YANG Yuan-sheng(杨院生) Institute of Metal... of rare earth (RE), Sr and RE + Sr on the dendrite growth and phase precipitation in AZ91D magnesium alloy were studied, respectively. The results show that the microstructure is refined......
Trans. Nonferrous Met. Soc. China 22(2012) s793-s800 Rotary ultrasonic-assisted milling of brittle materials KUO Kei-lin1, TSAO Chung-chen2 1. Department of Vehicle Engineering, National Taipei... was evaluated and presented. Ultrasonic assisted milling results in the reduction of milling resistance, which leads to a greater process rate. Key words: rotary ultrasonic; ultrasonic assisted milling......
Effect of large cold deformation after solution treatment on precipitation characteristic and deformation strengthening of 2024 and 7A04 aluminum alloys NING Ai-lin(宁爱林)1, 2, LIU Zhi-yi(刘志义)1... Received 2 March 2006; accepted 26 June 2006 Abstract: The effects of large cold deformation after solution treatment on the precipitation characteristic and deformation strength of 2024 and 7A04......
and then dissolved into H2SO4-H2O2 solution in a beaker and H2SO4 solution in an ultrasonic cleaner, respectively. Ultrasound-assisted leaching was performed in Kunshan KQ-50E ultrasonic cleaner (with a frequency... Trans. Nonferrous Met. Soc. China 22(2012) 2274-2281 Recovery of Co and Li from spent lithium-ion batteries by combination method of acid leaching and chemical precipitation ZHU Shu-guang1, 2, HE......
Rietveld Quantitative Analysis of Carbides Precipitation in Normalized-tempered 2.25Cr-1Mo-0.25V Steel张永涛1,张汉谦21. School of Materials Science and Engineering,Shanghai Jiaotong University2. Research... during early tempering treatment. The method is an effective way on the investigation of precipitation kinetics, which may play a promising role in propertities’ enhancement and design of the heat......
Synthesis of Ce:YAG Phosphor via Homogeneous Precipitation under Microwave Irradiation王勇,袁鹏,徐红燕,王介强摘 要:<正>Ultra-fine Ce:YAG phosphors were prepared by homogeneous precipitation under microwave irradiation method . The formation of Ce: YAG was investigated by means of XRD and DTA/TG. The purified YAG crystallized phase was obtained at a lower......
surface area, and the distribution is more even than at the slab center. After 580 ℃/(4-12 h) treatment, the distribution is uneven with no precipitation at the grain boundary and inner, and the precipitation size is small and the density is high. With the increase of temperature, the precipitation distribution becomes more even with lower density and bigger size. The HV hardness is uneven......
