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昆虫多状态发育的生存分析

生物数学学报 1991年第2期6卷 156-163页

作者：王建康刘来福河南省农科院郑州450002 北京师范大学北京100375

针对昆虫种群变态发育过程,本文给出了一个多状态生存函数的模型。使用生存分析的方法对模型进行丁分析。本文还对有关的生存参数如各状态的死亡风险,发育风险,年龄特征死亡率,年龄特征发育率以及状态发育历期等进行了讨论并且给出了它... 详细信息

针对昆虫种群变态发育过程,本文给出了一个多状态生存函数的模型。使用生存分析的方法对模型进行丁分析。本文还对有关的生存参数如各状态的死亡风险,发育风险,年龄特征死亡率,年龄特征发育率以及状态发育历期等进行了讨论并且给出了它们的极大似然估计值。关于马铃薯块茎蛾数值例子的分析表明所提出的摸型用来描述昆虫种群的发育过程是有效的。本文的结论可以做为组建描述昆虫种群多状发育的年龄一状态特征生命表的理论基础。

关键词：生存分析昆虫多态发育生存参数

A New Idea of Sinian Doushantuo'an Metaphyte Fossils from Xiuning, Anhui province

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Acta Geologica Sinica(English Edition) 1997年第4期71卷 491-501,515-517页

作者： Tang Feng, National geological Museum of china, Xisi, Beijing 100034Yin Chongyu and Gao Linzhiinstitute of Geology, Chinese Academy of geological sciences, 26 Baiwanzhuang, Beijing 100037 Fei Zhenbi National geological Museum of china Xisi Beijing 100034 institute of Geology Chinese Academy of Geological Sciences 26 Baiwanzhuang Beijing 100037 [?]Tang Feng Born in 1965 graduated from the Department of Earth sciences Nanjing University in 1987 got his master degree at the Chinese Academy of geological sciences in 1993. Now he is associate research professor of the National geological Museum of china and engaged in the study of Precambrian stratigraphy and palaeontology.

This paper gives a summary of the fossil data from the Sinian Doushantuo' an Lantian Formation in the Xiuning area, Anhui province, china, and reports the genital butt structure comparable to that of some modern advanced algae and the fossil structure comparable to the dehiscence of sporangia as well as the ontogenetic phenomenon occurring possibly from the formation of embryos by zygote germination to the production of sessile benthonic algal adults. This phenomenon furnishes a useful clue to the further study of the life history of alternate generations in advanced algae and provides megafossil evidence for the sex differentiation of metaphytic algae.

关键词： Doushantuo' an stage metaphyte fossil reproductive structure alternation of generations Xiuning Anhui

Discovery of Eoarchean Meta-Dioritic Rocks in Anshan Area, china and Its geological Significance

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Journal of Earth Science 1999年第4期18卷 291-294页

作者： Wan Yusheng Liu Dunyi Li Huiming Yang Chonghui(institute of Geology, Chinese Academy of geological sciences, Beijing 100037) institute of Geology Chinese Academy of Geological SciencesBeijing 100037

In the Anshan area of Liaoning province, an occurrence area of the oldest rocks in the world,the meta-dioritic rock of Eoarchaean has recently been found as enclaves in the 3. 8 Ga Dongshan banded trondhjemitic rock. It has relatively high contents of REE (w(∑REE) = 149. 3×10-6) and unmarked LREE enrichment over HREE (wn (La)/wa (Yb) = 6. 99). Eight analysed zircon grains yield a well-defined discordia with an upper intercept of 3. 65 Ga. Some of the data points give an important in formation of more ancient zircon existence in the rock. The rock shows unusually low ε(Nd, 3. 8 Ga) values of - 1. 15 to -1. 24 and large tDM age of 4. 15-4.16 Ga. The geological significance of the discovery is briefly discussed in this paper.

关键词： meta-dioritic rocks Nd isotope Eoarchaean Anshan

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高校应用数学学报

高校应用数学学报A辑 1997年第3期 127-128页

作者： GAO Lianda (institute of Geology,Chinese Academy of geological sciences)

高校应用数学学报第１２卷（１９９７年）Ｂ辑（英文版）第３期目次和提要一类图的嵌入刘莹刘彦佩（北方交通大学数学系）该文主要构造了一类图Ｂｎ，当ｎ≥３时Ｂｎ中图的可定向亏格均为ｎ．更进一步，对任意整数ｋ，１≤ｋ≤ｎ，Ｂｎ... 详细信息

高校应用数学学报第１２卷（１９９７年）Ｂ辑（英文版）第３期目次和提要一类图的嵌入刘莹刘彦佩（北方交通大学数学系）该文主要构造了一类图Ｂｎ，当ｎ≥３时Ｂｎ中图的可定向亏格均为ｎ．更进一步，对任意整数ｋ，１≤ｋ≤ｎ，Ｂｎ中存在一个图Ｂｋｎ其不可定向亏格为...

关键词：高校应用数学学报数学系不可定向亏格拓扑压半线性波方程哈密顿圈 hamilton圈刘彦佩

The research progress of bioinformatics-led design of single-chain antibody molecules

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The research progress of bioinformatics-led design of single...

A Possible Long-tailed Bird with a Pygostyle from the Late Mesozoic Yixian Formation, Western Liaoning, china

2010 3rd International Conference on Future BioMedical Information Engineering (FBIE 2010)

作者： Guo-Yong Shan Department of Radiation Oncology zhengzhou People’s Hospital zhengzhou 450053 china Jian-Hua Zhang The Faculty of Biomedical Engineering zhengzhou University zhengzhou 450001 china

The development of single-chain antibody （scFv） by recombinant gene expression is an important milestone for cancer gene therapy. Single-chain antibodies are reconstructed for cancer-targeted therapy to provide good penetration into tumor tissue and to improve their pharmacokinetics in vivo, offering a clinically valuable application. However, there may be some variation between the structure and function of the fusion proteins. Analyzing the interaction region between the antibody and the antigen, and the binding sites for molecular conformation, it is clear that the existing antibodies need to be modified, enhancing the biological activity of the antibodies. Based on the view that bio-molecular computer models are closely integrated with biological experiments, a bio-molecular structure–activity relationship model can be established in terms of molecular conformation, physical and chemical properties and the biological activity of single-chain antibodies. On the one hand, the structure–activity relationship is clear for new immune molecules at the gene expression level. On the other hand, a single-chain antibody molecule can be designed and optimized for the cancer-oriented treatment. In this review, we provide the theoretical and experimental basis for the development of singlechain antibodies appropriate for cancer therapy.

关键词： Single-chain antibody Fusion genes Bioinformatics Structure–activity relationship

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Acta Geologica Sinica(English Edition) 2005年第1期79卷 7-10页

作者： L Junchang1 and HOU Lianhai2 1 institute of Geology, Chinese Academy of geological sciences, Beijing 100037 2 institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of sciences, Beijing 100044 Department of Biology, Capital Normal University, Beijing 100037 Chinese Acad Geol Sci Inst Geol Beijing 100037 Peoples R China Chinese Acad Sci Inst Vertebrate Paleontol & Paleoanthropol Beijing 100044 Peoples R China Capital Normal Univ Dept Biol Beijing 100037 Peoples R China

An incomplete caudal vertebral series (IVPP V11309) from the Yixian Formation of late Mesozoic, Jianshangou area of Beipiao, western Liaoning province, may represent a new bird. The tail is composed of at least 12 free caudal vertebrae and the most distal 5 caudal vertebrae co-ossified into a pygostyle. The pygostyle is plate-like and slightly curved dorsally. The anterior free caudals are amphiplatyan. The anterior caudal surfaces of the last three free caudals are concave, but their posterior articular surfaces are convex. The pygostyle is regarded as the first appeared flight apparatus during the evolutionary process from Archaeopteryx to neornithes. The pygostyle appeared in most early fossil birds and almost all the modern birds. Although their morphologies are different, they are basically formed by at least four last caudal vertebrae. The specimen V11309 is regarded as a bird rather than a non-avian theropod dinosaur based on the following characters: short caudal vertebrae, numerous pits present on the surfaces of the centra and, a foramen present between the basal part of the fused neural spines, which is similar to that of Struthio camelus. The discoveries of pygostyles from the therizinosauroids and oviraptorosaurs may provide strong evidence for supporting the origin of birds from small theropod dinosaurs. The structure of the pygostyle in specimen V11309 is different from those of Beipiaosaurus (Therizinosauroid) and Nomingia (oviraptorosaur). The most parsimonious interpretation is that these pygostyle-like structures are independently acquired by Beipiaosaurus and Nomingia during their evolutionary process.

关键词： western Liaoning Yixian Formation late Mesozoic pygostyle

Hlder Stability Estimate for an Inverse Parabolic Problem

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Advances in Manufacturing 2000年第4期4卷 284-287页

作者： XU Ding hua 1,2 1. Department of Mathematics, College of sciences, Shanghai University, Shanghai 200072, china 2. Department of Computational sciences and Systematic Engineering, East china geological institute, Linchuan 344000, Jiangxi province

This paper deals with a parabolic system in a multi dimentional bounded domain ΩR n with the smooth boundary Ω. We discuss an inverse parabolic problem of determining the indirectly measurable internal heat distribution at any intermediate moment from the heat distribution measurements in arbitrary accessible subdomain ωΩ at some time interval. Our main result is the Hlder stability estimate in the inverse problem and the proof is completed with a Carleman estimate and a eigenfunction expansion for parabolic equations.

关键词： inverse parabolic problems heat conductivity equations Hlder stability Carleman estima

ROCK ASSOCIATIONS AND PETROGENESIS OF INDOSINIAN ALKALINE COMPLEX OF THE NORTH HEBEI province, NORTH china

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Scientia Geologica Sinica 1999年第1期 65-76页

作者： Zhang Zhaochong (institute of Geology, Chinese Academy of geological sciences, Beijing, 100037)

The Indosinian alkaline complexes in northern Hebei province are distributed along the two deep faults striking in an approximately east-west direction. These alkaline complexes arc divided into three rock associations: （1） pyroxene diorite-quartz alkaline-feldspar syenite-alkali-feldspar granite-syenite- aegirine-augite syenite-alkali-feldspar granite, （2） pyroxenite-biotite pyroxenite-magnetite apatitic rock -syenite; （3） nepheline syenite-unite-aegirine-augite syenite-ijolite. The former one occurs along the north deep fault, and the latter two along the south deep one. From north to south, the alkaline complexes increase in alkalinity and decrease in the contents of SiO2. Their geochemical characteristics show that the first rock association originated from the transition zone between the crust and the mantle, whereas the latter two originated from the replaced mantle. Their magmas experienced different evolutional processes. These alkaline complexes were resulted from the collision between the Sibrian plate and the Sino-Kerea plate at the end of Hercynian period.

关键词： ROCK ASSOCIATIONS AND PETROGENESIS OF INDOSINIAN ALKALINE COMPLEX OF THE NORTH HEBEI province Chen Zhang NORTH china Wang La

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钒钡铜矿的矿物学及其晶体结构

地质学报 1977年第1期 67-83+104页

作者： Vesignieite Research Group (Laboratory of geological Bureau, Shensi province and institute of Geology and Mineral Deposits, Academy of geological sciences of china) 中国地质科学院地矿所钒钡铜矿研究组陕西省地质局西安实验室钒钡铜矿研究组

一、前言钒钡铜矿(Vesignieite)是1963年在我国陕西省某地寒武纪黑色岩系中发现的一种含Ba、Cu的钒酸盐矿物。寒武纪黑色岩系层位稳定,在我国南部和中部地区有广泛分布,西北地区也有出露。我国地质工作者对它进行了大量的工作,据查其中... 详细信息

一、前言钒钡铜矿(Vesignieite)是1963年在我国陕西省某地寒武纪黑色岩系中发现的一种含Ba、Cu的钒酸盐矿物。寒武纪黑色岩系层位稳定,在我国南部和中部地区有广泛分布,西北地区也有出露。我国地质工作者对它进行了大量的工作,据查其中含数十种有工业价值的元素、百余种矿物,富集成种类繁多和规模不同的稀有、稀土及贵金属矿

关键词：钒钡铜矿晶胞参数 Ba 多面体立体几何矿物学原子间距结晶构造固体结构晶体结构