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Quantitative Analysis on Carbon Migration in Double-Glow Discharge Plasma Surface Alloying Process

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Quantitative Analysis on Carbon Migration in Double-Glow Dis...

14～(th) Congress of International Federation for Heat Treament and Surface Engineering

作者： ZHANG Zhen-xia WANG Cong-zeng ZHANG Wen-quan SU Xue-kuan Institution of Electronics chinese academy of {2. beijing China College of Materials Science and Engineering beijing university of Technology beijing China

＜正＞ Carbon migration is of great significance in double-glow discharge plasma surface alloying process, but literature of quantitative analysis about carbon migration is relatively scarce. In this paper differential equations of the carbon and metal concentration distribution were established. By means of differential equations carbon migration was described and a numerical solution was acquired. The computational results fit the experiment results quite well.

关键词： double-glow discharge plasma surface alloying carbon migration carbon steel

Macro-and microscopic mechanical behaviour of flow of coal samples experimentally deformed at high temperatures and pressures

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chinese Science Bulletin 2005年第S1期50卷 59-66页

作者： LIU Junlai , YANG Guang & MA Rui State Key Laboratory of Geological Processes and Mineral Resources, China university of Geosciences, {2. 100083, China Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, China university of Geosciences, {2. 100083, China College of Earth sciences, Jilin university, Changchun 130061, China China Univ Geosci State Key Lab Geol Proc & Mineral Resources Beijing 100083 Peoples R China China Univ Geosci Minist Educ Key Lab Lithosphere Tecton & Lithoprobing Technol Beijing 100083 Peoples R China Jilin Univ Coll Earth Sci Changchun 130061 Peoples R China

Coal samples from Qinshui Basin, Shanxi, China are experimentally deformed at temperatures and confining pressures of 2.0 - 500℃and 2.0 - 500 Mpa, strain rate of 0.5×10-5/s and total strain of 10%. The vitrinite reflectance of the coal samples varies from 3.04 to 1.79. It is shown that the strengths of the deformed samples change obviously with coeval increasing temperatures and pressures (T/P). At the experimental range of T/P, the effects of increasing temperature predominate over that of increasing pressure. Microstructural analysis indicates a brittle to ductile transition under experimental T/P conditions from 2.0 to 300℃, and 2.0 to 300Mpa. Brittle deformation microstruc-tures include macroscopic fracture zones and penetrative fracture associations. Elongation, undulose or irregular extinction, deformation lamellae and dynamic recrystallization of grains are the main ductile deformation microstructures. The variation of deformation mechanisms of the experimentally deformed coal samples is related to both the components of coals and T/P conditions. At low T/P, fractures occur in both inertinite and vitrinite of the samples. At higher T/P, crystalline plastic deformations are observed in the inertinite only.

关键词： coal experimental deformation brittle to ductile transition.

INTEGRATED PEST MANAGEMENT IN CITRUS ORCHARDS WITH INTERPLANTING AGERATUM CONYZOIDES: AN IMPORTANT ALLELOPATHIC COMPONENT?

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INTEGRATED PEST MANAGEMENT IN CITRUS ORCHARDS WITH INTERPLAN...

The ⅩⅤth International Plant Protection Congress

作者： KONG Chui-hua1’2.HU Fei1 ZHANG Chao-xian3 and XU Xiao-hua2.1Institute of Tropical and Subtropical Ecology South China Agricultural university Guangzhou 510642.China 2.tate Key Laboratory of Elemento-Organic Chemistry Nankai university Tianjin 300071 China 3Institute of Plant Protection {2. academy of Agricultural sciences beijing 100094 China

中药干预对运动性低血色素大鼠肝脏自由基代谢的影响

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四川体育科学 2009年第3期28卷 22-25页

作者：苏浩曹建民北京体育大学研究生院北京100084 北京体育大学运动人体科学学院北京100084

研究表明运动能力与肝脏的生理机能密切相关。运动后理气扶正中药与运动训练相结合,有助于稳定肝抗氧化酶活性,并促进抗氧化酶活性的恢复。本研究将大鼠分为安静和运动两大组。让运动组大鼠在跑台上进行递增负荷运动建立低血色素大鼠模... 详细信息

研究表明运动能力与肝脏的生理机能密切相关。运动后理气扶正中药与运动训练相结合,有助于稳定肝抗氧化酶活性,并促进抗氧化酶活性的恢复。本研究将大鼠分为安静和运动两大组。让运动组大鼠在跑台上进行递增负荷运动建立低血色素大鼠模型,安静组为对照。各组大鼠又分为喂水和喂中药两类,喂水大鼠为喂中药大鼠的对照。通过测试大鼠红细胞计数、血红蛋白、红细胞比积以及肝脏组织的抗氧化酶的活性和自由基代谢产物含量的变化,以了解运动对血色素下降和自由基代谢的影响以及中药干预对血色素下降和自由基代谢的作用。

关键词：低血色素大鼠中药干预自由基影响

PALEOTETHYAN OCEANIC ISLAND AND ISLAND-ARC BORDERING YUNNAN AND GUANGXI: PETROCHEMISTRY OF VOLCANIC ROCKS

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Scientia Geologica Sinica 2000年第2期 123-132页

作者： Wu Genyao Wu Haoruo and Zhong Dalai (Institute of Geology and Geophysics, chinese academy of {2., beijing 10002.) Kuang Guodun (Guangxi Institute of Geology, Nanning 53002.) Ji Jianning (Department of Geology Peking university, beijing 100871)

Based on systematic petrochendstry are explored the tectonic settings of volcanic rocks bordering Yunnan and Guangxi in age of Permian-Middle Triassic. The oceanic island basalt is represented by the Longhuai pillow lava, which is, originally Hawaii-type one in the Paleotethyan ocean, an allochthon in the Indosinian foreland fold-and-thrust belt. The andesitic-basalhc rocks from Yutang-Natang, Yanaiia Mts. and Fuhng River indicate the oceanic basin subducted, overall, from Perman right up to Middle Triassic, which reflects dishnct geodynamc background of the Paleotethyan evolution from that in southwest Yunnan. The knowledge provides new teshmonies for the area bordering China and Vieinarn being, tectonica1ly, Paleotethysides and key data for reconstructing Paleotethyan evolution there

关键词： Wang ARC TiO PETROCHEMISTRY OF VOLCANIC ROCKS PALEOTETHYAN OCEANIC ISLAND AND ISLAND-ARC BORDERING YUNNAN AND GUANGXI

Validation and Scenario Analysis of a Soil Organic Carbon Model

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Agricultural sciences in China 2002年第4期1卷 417-423页

作者： HUANG Yao, LIU Shi-Hang, SHEN Qi-rong, ZONG Liang-gang, JIANG Ding-an and HUANG Hong-guang(College of Resource and Environmental sciences , Nanjing Agricultural university, Nanjing 2.0095 , P,R. China Institute of Atmospheric Physics , {2. academy of sciences , beijing 10002. , P. R . China Agricultural Bureau of Yixing City, Yixing 2.42.9 , P.R. China ) College of Resource and Environmental sciences Nanjing Agricultural University Nanjing 210095 P.R. China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 P.R. China College of Resource and Environmental sciences Nanjing Agricultural University Nanjing 210095 P.R. China Agricultural Bureau of Yixing City Yixing 214209 P. R . China

A model developed by the authors was validated against independent data sets. The data sets were obtained from field experiments of crop residue decomposition and a 7-year soil improvement in Yixing City, Jiangsu Province. Model validation indicated that soil organic carbon dynamics can be simulated from the weather variables of temperature, sunlight and precipitation, soil clay content and bulk density, grain yield of previous crops, qualities and quantities of the added organic matter. Model simulation in general a-greed with the measurements. The comparison between computed and measured resulted in correlation coefficient γ2.values of 0.92.1* * * (n= 48) and 0.6431* * (n = 65) for the two experiments, respectively. Model prediction under three scenarios of no additional organic matter input, with an annual incorporation of rice and wheat straw at rates of 6.75t/ha and 9.0t/ha suggested that the soil organic carbon in Wanshi Township of Yixing City would be from an initial value of 7.85g/kg in 1983 to 6.30g/kg, 11.42./kg and 13g/kg in 2.14, respectively. Consequently, total nitrogen content of the soil was predicted to be respectively 0.49g/kg, 0.89g/kg and 1.01g/kg under the three scenarios.

关键词： Agricultural soils Organic carbon Simulation model Validation Scenario analysis

What Can the Redshift Observed in EXO 0748-676 Tell Us?

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chinese Journal of Astronomy and Astrophysics 2003年第1期3卷 33-37页

作者： Ren-Xin XuDepartment of Astronomy, School of Physics, Peking university, beijing 100871 rxxu@*** Department of Astronomy School of Physics Peking University Beijing 100871 China

The mass-radius relations for bare and crusted strange stars are calculated with the bag model. Comparing these relations with the observed one derived from the redshift of EXO 0748–676, we come to the conclusion that it is incorrect to say that EXO 0748–676 cannot be a strange star. Various strange star models can show that EXO 0748–676 could have a mass of (1.3 ~ 1.7)M☉ and a radius of (8.4 ~ 11.4) km. It is proposed that a proportion of nascent strange stars could be bare and have masses ~ 0.1M☉, and their masses increased over a long period of accretion.

关键词： stars: fundamental parameters dense matter stars: neutron

Identification of HbNIN2.as the key invertase responsible for sucrose catabolism in rubber-producing laticifers,a rate-limiting step determining rubber productivity

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Identification of HbNIN2 as the key invertase responsible fo...

第十三届全国植物基因组学大会

作者： Chaorong Tang~(1,*) Shujin Liu~(1,2.#),Jixian Lan~(1,2.#),Binghui Zhou~(1,2.,Yunxia Qin~1,Yihua Zhou~3, Jianghua Yang~1,Yuekun Wang~1,Jiyan Qi~1 1 Key Lab of Rubber Biology,Ministry of Agriculture & Rubber Research Institute,chinese academy of Tropical Agricultural {2.,Danzhou,Hainan 571737,China. 2.College of Agronomy,Hainan university,Danzhou,Hainan 571737,China. 3 National Center for Plant Gene Research,Institute of Genetics and Developmental Biology, chinese academy of {2.,beijing 100101,China

The role of neutral/alkaline invertases(NA-lnvs) in determining the sink strength of laticifers and final rubber productivity has been well described in Hevea brasiliensis(Hevea hereafter). However,nothing was known about the relevant gene(s) encoded such NA-lnvs in *** this work,we cloned and functionally characterized the cDNA sequences that code for three NA-lnvs expressed in the *** three cDNAs,designated HbNIN1,HbNIN2.and HbNIN3,

关键词：

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土木香内酯的电化学研究

分析测试学报 1998年第2期17卷 47-49页

作者：袁倬斌邹洪中国科技大学研究生院

用单扫示波极谱法，在０１ｍｏｌ／ＬＬｉＣｌ中，土木香内酯有两个极谱还原波：Ｐ１（－１４１Ｖ）和Ｐ２（－１５１Ｖ）（ｖｓ．ＳＣＥ），峰Ｐ１的峰高与浓度在４３×１０－７～１２×１０－６ｍｏｌ／Ｌ和１３×１０－... 详细信息

用单扫示波极谱法，在０１ｍｏｌ／ＬＬｉＣｌ中，土木香内酯有两个极谱还原波：Ｐ１（－１４１Ｖ）和Ｐ２（－１５１Ｖ）（ｖｓ．ＳＣＥ），峰Ｐ１的峰高与浓度在４３×１０－７～１２×１０－６ｍｏｌ／Ｌ和１３×１０－６～１５×１０－５ｍｏｌ／Ｌ范围内呈线性关系，可进行定量分析，用标准加入法能作定性分析，其检测限为２６×１０－７ｍｏｌ／Ｌ。测定了中药土木香中总内酯的含量，其结果令人满意。实验证明土木香内酯的电极过程为带有吸附性的不可逆的逐级电子反应过程，另外，还证明了Ｈ２Ｏ２可催化峰Ｐ１和羟基自由基可催化峰Ｐ２，讨论了土木香内酯清除由邻苯三酚自氧化产生的活性氧自由基（Ｏ－·２）的作用。

关键词：土木香内酯双氧水超氧自由基极谱法清除