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Basic Lithofacies-Succession Model for the Wumishan Cyclothems: Their Markov Chain Analysis and Regularly Vertical Stacking Patterns in the Third-Order Sequences

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Acta Geologica Sinica(English Edition) 2001年第4期75卷 421-431页

作者： MEI Mingxiang, MA Yongsheng and GUO Qingyin institute of Earth Sciences and Natural Resources, china University of Geosciences, {2. 100083.china Petrochemical Corporation (SINOPEC), {2. 10002. institute of Earth Sciences and Natural Resources China University of Geosciences Beijing 100083 china Petrochemical Corporation (SINOPEC) Beijing 100029 [?]3.ei Mingxiang Male born in 1965 got his Ph.D. in geology at the china University of Geosciences in 1993. He has been engaged in sedimentology and stratigraphy and is now serving as an associate professor in the China University of Geosciences.

The Mesoproterozoic Wumishan Formation in the Jixian section of Tianjin is a succession of 3.00-m-thick carbonate strata formed in a period of about 100 Ma (13.0±2. Ma-12.7±10 Ma). In this succession of strata, the carbonate metre-scale cyclic sequences belonging to peritidal type with an approximately symmetrical lithofacies-succession are best developed. The wide development of 1:4 stacking patterns shows that these metre-scale cyclic sequences are genetically related to the short-eccentricity cycles, which are called the Wumishan cyclothems that could truly represent sedimentary cycles. Generally, massive and thick-bedded calcareous dolomites and dolomitic limestones of stromatolite biostromes and thrombolite bioherms constitute the central part of the Wumishan cyclothems. The lower and upper parts consist of tidal flat dolostones, sandy-muddy dolostone and the top part is composed of lagoonal facies dolomitic shales with a paleosol cap. Therefore, an approximately symmetrical lithofacies-succession is formed. Many features such as the clear deepening and shoaling vectors of cyclothems, and all kinds of marks of fresh-water diagenesis indicate that the Wumishan cyclothems are the product of autocyclic sedimentation governed by allocyclic high-frequency sea-level changes. The results of a Markov chain analysis reaffirm the existence of the lithofacies-succession model of the Wumishan cyclothems. The boundaries of the Wumishan cyclothems are marked by the instantaneous exposed punctuated surface, which leads to the discrepancy between the cyclothems and the parasequences of the sequence stratigraphy terminology system. It is difficult to form a judgment that the time span of the Milankovitch cycles in the Precambrian is certainly equal to that of the Phanerozoic, but the regularly vertical stacking patterns of the seventh-order rhythms, sixth-order cyclothems and fifth-order parasequence sets still indicate their consistency with the duration of the Milankovitch cy

关键词： Wumishan cyclothems Markov chain analysis Mesoproterozoic Jixian section Tianjin

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Effects of temperature and rare earth content on oxidation resistance of Ni-based superalloy

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Progress in Natural Science:Materials International 2011年第3期21卷 227-235页

作者： Xiu SONG~1,Lei WANG~1,Yang LIU~1,Hui-ping MA~2.1.Key Laboratory for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110004,china 2.Department of High-temperature Materials,Central Iron & Steel Research {3.,{2. 100081,china [a] Key Laboratory for Anisotropy and Texture of Materials Northeastern University Shenyang 110004 China [b] Department of High-temperature Materials Central Iron & Steel Research Institute Beijing 100081 China

The oxidation behaviors of the Ni-2.Cr-14W-2.o superalloys with various La contents were investigated at 1 000℃and 1 100℃up to 500 *** experimental results show that the oxidation resistance is improved by La *** mechanism of the reactive-element effect（REE） exhibits some difference at various oxidation *** REE is dependent on the solutionized La content when the alloy is oxidized at 1 000℃.The dispersed LaCrO3.egregates on the grain boundaries of *** hence the diffusion of metallic ions,e.g.,Mn2.and Cr3.,are *** oxidation resistance decreases with the increase of La content. However,the REE ascribes not only to the solutionized La,but also to the La-Ni intermetallic phases,when the alloy is oxidized at 1 100℃.The oxidation resistance is influenced by two effects:firstly,the formation of the dispersed La2.3.rom the solutionized La on the grain boundary of Cr-oxides reduces the oxidation rate,and secondly,the aggregation of the La-O oxides from the large amount of La-Ni phases accelerates the oxidation *** alloy with 0.02.%La（mass fraction） exhibited excellent oxidation resistance at 1 100℃.

关键词： Ni-based superalloy isothermal oxidation rare earth La oxidation resistance

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Preventive effects of Xin-Kang oral liquid on viral myocarditis in mice

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Progress in Natural Science:Materials International 2002年第2期 27-29+83页

作者： ZHAO Hong and WAN Sujun( Cardiovascular institute and Fu Wai Hospital, chinese {2. of Medical Sciences,Peking Union Medical College, {3. 10003., china Guang An Men Hospital, chinese {2. of Traditional chinese Medicine, {3. 100053. china) Cardiovascular institute and Fu Wai Hospital Chinese Academy of Medical Sciences Peking Union Medical Collage Beijing 100037 China Guang An Men Hospital Chinese Academy of Traditional Chinese Medicine Beijing 100053 China

To investigate the preventive effects of Xin-Kang oral liquid on myocarditis induced by Coxsakie virus B (CVB), the medicine was given to mice two days prior to the challenge of mice with the CVB to induce myocarditis. The oral liquid was continuously given to mice for 2. days and quantitative histological changes at various stages of the myocarditis were observed. The pathological changes on the cardiac surface were significantly reduced in Xin-Kang treated mice compared to those in control group (P<0.01), and the occurrence of severe myocardium damage (massive cardiac tissue death and degradation) was less in the Xin-Kang group than the groups either challenged with CVB or treated "with interferon. The group treated with 0. 015g per gram body weight per day showed significant improvement over the viral group (P<0. 01) . The results proved that Xin-Kang could protect the cardiac muscle from viral infection and accelerate recovery of damaged cardiac tissue.

关键词： viral myocarditis Xin-Kang oral liquid histomorphology.

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非编码RNA与RNA组学研究现状及发展态势

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生物化学与生物物理进展 2010年第10期37卷 1051-1053页

作者：冷方伟中国科学院生物物理研究所北京100101

人类基因组计划的完成(2.01年)宣告了后基因组时代的到来,也掀起新一轮的RNA研究热潮.作为后基因组时代的科学前沿,RNA组学近年来成为生命科学领域的研究热点,各种新型ncRNA的发现,让人们对遗传信息表达调控网络有了新的认识.结合RNA领... 详细信息

人类基因组计划的完成(2.01年)宣告了后基因组时代的到来,也掀起新一轮的RNA研究热潮.作为后基因组时代的科学前沿,RNA组学近年来成为生命科学领域的研究热点,各种新型ncRNA的发现,让人们对遗传信息表达调控网络有了新的认识.结合RNA领域的最新研究进展,《中国科学C辑:生命科学》(Science in china Series C-Life Sciences)2.09年第3.的8篇述评,从动植物小分子非编码RNA、miRNA与细胞分化发育、miRNA与肿瘤发生及诊断治疗的靶点、核酶的结构与功能、遗传印记起源、miRNA基因簇的进化等多个方面进行了综述,展现了ncRNA领域的研究现状和发展前景.

关键词： ncRNA RNA组学 miRNA RNAi 核酶 tRNA mRNA剪接

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Adaptive control design of L2.-disturbance attenuation of multimachine power systems with SMES units by using Hamiltonian function method

Adaptive control design of L2 -disturbance attenuation of mu...

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第二十一届中国控制会议

作者： WANG Yu-zhen, LI Chun-wen, CHENG Dai-zhan ( Department of Automation, Tsinghua University, beijing, 100084, china {2. of Systems Science, {3. academy of Sciences, beijing, 100080, china)

＜正＞By using Hamiltonian function method, this paper investigates adaptive control design of L2.-disturbance attenuation of an n -machine power system with m SMES （superconducting magnetic energy storage） units, and proposes a decentralized control scheme for the adaptive case of parameter perturbations. Firstly, the n -machine power system with the m SMES units is expressed as a dissipative Hamiltonian system by using a pre-feedback control. Then the stability of the achieved dissipative Hamiltonian system is studied. Thirdly, this paper investigates the energy-based adaptive control design of L2.-disturbance attenuation of the system with parameter perturbations.

关键词： n -machine power system SMES dissipative Hamiltonian realization L2.- disturbance attenuation energy-based adaptive control

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Linux目标代码内核补丁的机理和应用

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计算机工程与应用 2004年第32期40卷 121-123,180页

作者：胡勇其匡先锋侯紫峰中国科学院计算技术研究所中国科学院研究生院北京100083 联想研究院

该文介绍了基于目标代码(二进制编译文件)为Linux运行时系统内核内存映像打补丁以修改内核的原理和方法,并给出了一个示例场景和程序以说明其应用。掌握该方法对于内核开发、系统调试和系统安全都具有重要的实用价值。

关键词：内核补丁 Linux 目标代码

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Serum response factor play a regulative role in the gene expression in heart failure

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Journal of Geriatric Cardiology 2005年第4期2卷 223-227页

作者： Xiaoxia WU , Guang ZHI, Tao WAN, Jiajin WU beijing Hospital of Integrating Traditional chinese with Western Medicine, beijing 10003., {3. The General Hospital of PLA, beijing 100853. {3. institute of Basic Medical Sciences, beijing 100850, {3. beijing Hospital of Integrating Traditional chinese with Western Medicine The General Hospital of PLA

Objective To investigate the relationship between transcription factor and the change of protein expression levels in heart failure. Methods Bioinformatic method was used to analyze the data of binding-sites on the 5' flaking regions of four genes whose mRNA level changed in failing heart from three databases about nucleic acid-EMBL, transcriptional regulation factor-TRANSFAC and protein-SWISS-PORT. The expression level of selected transcription factor was determined by immunohischemical method. Results Nine transcription factors were inferred to influence the proteins' levels in occurrence and development of heart failure. Serum response factor (SRF) was selected from the nine factors and assayed. The results showed that there was a higher level of SRF in healthy group than in chronic heart failure (CHF), and the level was associated with the degree of CHF. It was also found that there was a relative higher level of SRF in the acute myocardial infarction (AMI) than that in CHF, but which was lower than the healthy. Conclusion It showed that SRF had a quantitative change in the development of heart failure, and suggested SRF might play an important regulative role in heart failure. The expression changes of proteins related to myocardial function might be regulated by the quantitative change of transcription factor(s).

关键词： heart failure gene expression transcription factor serum response factor bioinformatics

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A NEW CANID GENUS FROM THE PLIOCENE OF YUSHE, SHANXI PROVINCE

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古脊椎动物学报(中英文） 1996年第1期 35-40页

作者： Richard H. Tedford (American Museum of Natural History New York 1002.)Qiu Zhanxiang(institute of Vertebrate Paleontology and Paleoanthropology, chinese {2. of Sciences beijing 100044)

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Functional analysis of DNA 4 coding region from a chinese Zhangzhou isolate of banana bunchy top virus

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Progress in Natural Science:Materials International 2002年第6期 28-32页

作者： SUN Dejun, SUN Hui, WEI Hongyan, FAN Xiaoxue, CAI Wenqi and TIAN Yingchuan(Plant Biotechnology Laboratory, institute of Microbiology, chinese {2. of Sciences, {3., china) Plant Biotechnology Laboratory Institute of Microbiology Chinese Academy of Sciences Beijing 100080 China

The DNA 4 coding region of banana bunchy top virus from a chinese Zhangzhou isolate (BBTV-ZZ) is cloned by PCR. The sequencing analysis shows that it is 3.1 nucleotides long and it putatively encodes a protein of 116 amino acids. On the basis of a plant binary vector pBin43., the plant expression vector pBBTV-4B harboring the BBTV-ZZ DNA 4 coding region has been constructed and then transferred to tobacco (Nicotiana tobacum cv. Xanthi nc) by a Agrobacterium-mediated procedure. Under insect-free condition, movement-defective mutant of CMV-Fny strain (CMV-Fny-AMP) is mechanically inoculated on the lower leaves of transgenic plants. Systemic symptoms with different degrees of severity are developed in the upper uninoculated leaves of transgenic plants at 12.days postinoculation (dpi), while no symptoms can be seen in the uninoculated leaves of untransformed plants at any time. Accumulation of CMV-Fny is detected on the upper uninoculated leaves of transgenic plants, but is not on that of untransformed plan

关键词： BBTV-ZZ DNA 4 movement protein CMV-Fny-△MP.

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Low Spring Constant Regulates P-selectin-PSGL-1 Bond Rupture

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生物物理学报 2009年第S1期25卷 91-92页

作者： Yan Zhang, Ganyun Sun, Shouqin Lü, Ning Li, and Mian Long Key Laboratory of Microgravity(National Microgravity Laboratory) and Center for Biomechanics and Bioengineering, institute of Mechanics, chinese {2. of Sciences, {3. 100190, china

Forced dissociation of selectin-ligand bonds is crucial to such biological processes as leukocyte recruitment, thrombosis formation, as well as tumor metastasis. While

关键词： Selectin-ligand bonds Rupture Spring constant Optical trap

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