检索结果-南通市图书馆

Roles of Salicylic Acid-responsive Cis-acting Elements and W-boxes in Salicylic Acid Induction of VCH3 Promoter in Transgenic Tobaccos

在线全文

学校读者我要写书评

暂无评论

Acta Biochimica et Biophysica Sinica 2006年第1期38卷 46-52页

作者： Hai-Yan LI~(1,2),Wei WEI~(2&),and Yu LI~(1*) ~1 Institute of Mycology,jilin Agricultural university,changchun 130118,china ~2 college of Biotechnology,jilin Agricultural university,changchun 130118,china Institute of Mycology Jilin Agricultural University Changchun 130118 China college of Biotechnology Jilin Agricultural University Changchun 130118 China

A salicylic acid (SA)-inducible VCH3 promoter was recently identified from grapevine (Vitisarnurensis) that contains two inverse SA-responsive cis-acting elements and four *** furtherdemonstrate the roles of these elements,four fragments with lengths from-1187,-892,-589,-276 to+7 bp were fused with the β-glucuronidase (GUS) reporter géne and transferred to Nicotiana tobacum,together with another four VCH3 promoter fragments with mutation in the two inverse *** functions,of each promoter fragment were-examined by analysis of GUS activity in thetransgenic tobacco root treated with *** GUS activity was shown in the roots of transgenictobaccos with the VCH3 (-1187)-GUS construct containing two SA-responsive cis-acting elements andfour ***,GUS activity directed by the VCH3 (-892)-GUS construct,containing one SA cis-acting element and four W-boxes,was reduced by up to 35% compared with that in tobaccos transformedwith the VCH3 (-1187)-GUS construct,indicating that the SA cis-acting element plays an important role inSA induction of the VCH3 *** the m2VCH3 (-1187)-GUS nor the mVCH3 (-892)-GUSconstruct,with mutation on the SA-responsive elements,abolished the expression of GUS activity,demon-strating that the W-boxes in the VCH3 promoter are also involved in SA *** arialysis ofGUS activity directed by each of the eight VCH3 promoter fragments showed that GUS was expressedspecifically in vascular *** was concluded that both the SA-responsive cis-acting elements and the W-boxes are important for the SA induction of the VCH3 *** promoter might have a potential usein plant genetic engineering.

关键词： VCH3 promoter salicylic acid(SA)-responsive cis-acting element W-box site-directed mutagenesis SA induction transgenic tobacco

Stable isotopic composition of the intrusive massive sulphide deposits

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1997年第6期42卷 476-478页

作者： MENG LiangyiDepartment of Geology, changchun university of earth sciences, changchun 130026, china Department of Geology Changchun University of Earth Sciences Changchun China

A new genetic type of deposits, intrusive massive sulphide deposits, is found to be genetically linked with intermediate-acid intrusive rocks. Copper is the main industrial element, and gold is also important and can sometimes make up single gold deposits. This type of massive sulphide deposits is widely distributed in middle-lower reaches of the Yangtze River. The famous mines are Wushan, Chengmenshan and Dingjiashan in Jiangxi Province, Xinqiao and Dongguashan in Anhui Province. The deposits are mostly hosted in

关键词： intrusive massive sulphide deposits intermediate-acid intrusive rocks stable isotopes.

Experimental remolding on the caprock's 3D strain field of the Indosinian-Yanshanian epoch in Tongling deposit concentrating area

在线全文

学校读者我要写书评

暂无评论

Science china earth sciences 2005年第7期48卷 863-874页

作者： DENG Jun1,HUANG Dinghua2,WANG Qingfei1,WAN Li1,SUN Zhongshi3,YANG Liqiang1 & GAO Bangfei1 1. State Key Laboratory of Geological Processes and Mineral Resources,china university of Geosciences,Beijing 100083,china 2. Faculty of earth sciences,china university of Geosciences,Wuhan 430074,china 3. Department of earth sciences,jilin university,changchun 13.061,china State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing 100083 China Faculty of earth sciences China University of Geosciences Wuhan 430074 China Department of earth sciences Jilin University Changchun 130061 China

Based on field observations and rheology analysis, we perform one analogue experiment and remold the 3D structural frame of Tongling deposit concentrating area firstly. Then we disassemble and dialyze the 3D structures of the model using the methods of "slicing" and "stripping". A series of sliced planes vertical to the fold hinges show similar landscapes of that in the drill hole profiles. Meanwhile, layer stripping analysis indicates that the deformation features of each layer in the model are qualitatively analogical to those obtained from field observations. Through contrasting the 3D structure between the experimental model and the field phenomena, we verify the following 3D deformation features of the caprock in this area: (1) the Tongling area mainly consists of three series of NE S-typed fold groups; (2) in the uniform stress field, the incoherent folds universally develop in different positions, along different axes as well as in different strata; (3) the faults propagate upward which are mostly inter-bedded detachment faults, while the fold amplitudes decrease while going deeper; and (4) the folds and cleavages are highly developed in the Silurian System indicating that the deformation effect of the Indosin-ian-Yanshanian structural layer terminates at this layer, which suggests that the Silurian System is the crucial layer for the inversion between brittle and plastic deformation domains and the underlying strata are subject to the control of another deformation system with distinct properties.

关键词： Tongling deposit concentrating area Indosinian-Yanshanian epoch 3D structural frame of the caprock analogue experiment slicing and stripping analysis structural model.

Arnold's theorem on properly degenerate systems with the Russmann nondegeneracy

在线全文

学校读者我要写书评

暂无评论

Science china Mathematics 2005年第12期48卷 1656-1669页

作者： HAN Yuecai & LI Yong college of Mathematics, jilin university, changchun 130012, china college of Mathematics Jilin University Changchun China

In this paper, we investigate the persistence of invariant tori for the nearly in-tegrable Hamiltonian system H(x,y) = h(y) + εp(x,y) + ε2Q(x,y), where h(y) and εp(x,y) satisfy the Russmann non-degenerate condition. Mainly we overcome the difficulties that the order of the parameter E in the perturbation ε2Q(x,y) is not enough and that the measure estimate involves in parts of frequencies with small parameter.

关键词： Arnold’s theorem the Russmann non-degenerate condition.

The Discovery and Study of Mantle-Derived Dunite Inclusions in Hornblende-Diorite in the Handan-Xingtai Area,Hebei

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 1991年第3期65卷 259-269页

作者： Xu Wenliang Lin Jingqian changchun Universily of earth sciences, changchun, jilin Jiang Minxi changchun university of earth sciences Changchun Jilin

Phlogopiie-and diopside-bearing dunite occurs as rounded inclusions in hornblende-diorite. Thepetrofabrics, mineral composition and abundances of the trace elements in the dunite indicate that the inclu-sions were derived from the upper mantle and are the residues of high-degree partial melting of mantlepeirdotite. The study of trace elements in the inclusions and their host rocks shows that the magma was origi-nated from the mantle which was enriched in incompatible elements by mantle metasomatism prior to the par-tial melting.

关键词： The Discovery and Study of Mantle-Derived Dunite Inclusions in Hornblende-Diorite in the Handan-Xingtai Area Hebei

Mitochondrial DNA analysis of ancient Sampula population in Xinjiang

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2007年第8期17卷 927-933页

作者： Xie Chengzhi~(1,2) Li Chunxiang~2 Cui Yinqiu~(1,2) Cai Dawei~(1,2) Wang Haijing~2 Zhu Hong~1 Zhou Hui~(1,2**) (1.Research Center for Chinese Frontier Archaeology,jilin university,changchun 130012,china 2.college of Life Science,jilin university,changchun 130023,china) Research Center for Chinese Frontier Archaeology Jilin University Changchun 130012 China college of Life Science Jilin University Changchun 130023 China

The archaeological site of Sampula cemetery was located about 14 km to the southwest of the Luo County in Xinjiang Khotan,china,belonging to the ancient Yutian kingdom.14C analysis showed that this cemetery was used from 217 *** 283 A.D. Ancient DNA was analyzed by 364 bp of the mitochondrial DNA hypervariable region I （mtDNA HVR-I）,and by six restriction fragment length polymorphism （RFLP） sites of mtDNA coding *** successfully extracted and sequenced intact stretches of maternally inher- ited mtDNA from 13 out of 16 ancient Sampula *** analysis of mtDNA haplogroup distribution showed that the ancient Sampula was a complex population with both European and Asian *** joining network of U3 sub-haplogroup and multi-dimen- sional scaling analysis all showed that the ancient Sampula had maternal relationship with Ossetian and Iranian.

关键词： ancient DNA mitochondrial DNA Sampula ancient populations

Discovery of eclogite and its geological significance in Qiangtang area, central Tibet

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2006年第9期51卷 1095-1100页

作者： LI Cai1, ZHAI Qingguo2, DONG Yongsheng1 & HUANG Xiaopeng11. college of earth sciences, jilin university, changchun 13.061, china 2. Institute of Geology, Chinese Academy of Geological sciences, Bei- jing 100037, china college of earth sciences Jilin University Changchun China Institute of Geology Chinese Academy of Geological Sciences Beijing China

Eclogite is first discovered from Qiang- tang area, central Tibet, which occurs as a lens in the high-pressure metamorphic belt comprising glauco- phane-muscovite schist and garnet-muscovite schist, along the south margin of Lungmu Co-Shuanghu Paleo-Tethys suture. A glaucophane 40Ar/39Ar age of 220 Ma and a phengite 40Ar/39Ar age of 221.9 Ma have been obtained from blueschists associated with eclogite. The rock consists of garnet, omphacite, amphibole, phengite, and rutile, etc, and the jadeite content in omphacite ranges from 32.7% to 38.95%. It is estimated that the temperature of the eclogite is 2.35 GPa. The discovery of Qiangtang ecologite fur- ther supports that there is a suture zone of Indo- Chinese epoch in central Qiangtang area, and is very important for discssing the evolution of the pa- leo-ocean and paleo-plate tectonics in this area.

关键词： Qianghai-Tibet Plateau Qiangtang eclogite tectonics.

A software cascading faults model

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science china(Information sciences) 2011年第11期54卷 2454-2458页

作者： LIU YanHeng 1,2,LIU XueLian 3 & WANG Jian 1,2 1 Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education,jilin university,changchun 130012,china 2 college of Computer Science and Technology,jilin university,changchun 130012,china 3 college of Software,jilin university,changchun 130012,china Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China college of Computer Science and Technology Jilin University Changchun China college of Software Jilin University Changchun China

Functions and call relations are extracted into nodes and edges,respectively,by which a novel topological model is *** directional edges and the corresponding weight values express the call relations and tightness *** introducing two concepts of function fault-tolerant capability and software fault intensity and by designing a allocation rule on fault-tolerant capability,a cascading fault model is built to explore fault propagation *** on practical software networks show that a weak fault intensity,a small number of initial faults,and a strong fault-tolerant capability can slow down the spreading *** functions with more call relations and more closer tightness contribute more to the stability of the whole system.

关键词： software fault tolerant cascading faults fault-tolerant capability fault intensity

SHRIMP U-Pb dating and Hf isotopic analyses of Middle Ordovician meta-cumulate gabbro in central Qiangtang, northern Tibetan Plateau

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science china earth sciences 2010年第5期53卷 657-664页

作者： ZHAI QingGuo1 WANG Jun1, LI Cai2 & SU Li3 1 Institute of Geology, Chinese Academy of Geological sciences, Beijing 100037, china 2 college of earth sciences, jilin university, changchun 13.061, china 3 The Geological Laboratory Center and State Key Laboratory of Geological Processes and Mineral Resources, china university of Geo- sciences, Beijing 100083, china Institute of Geology Chinese Academy of Geological Sciences Beijing China college of earth sciences Jilin University Changchun China The Geological Laboratory Center and State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing China

Metabasites consisting of metamorphic ultra-mafic rocks, cumulate gabbro, gabbro (diabase), basalt, and plagiogranite are exposed at the Taoxinghu area in central Qiangtang, northern Tibetan Plateau. Zircon SHRIMP U-Pb dating for the cumulate gabbro yields a weighted mean age of 467±4 Ma, which is the oldest and most reliable magmatic age in this area. Zircon 176Hf/177Hf ratios range from 0.282615 to 0.282657, with εHf(t) values of 5.02±0.28, indicating that the cumulate gabbro was mainly derived from the depleted mantle. In addition, geochemical data of metabasites suggest that they have similar characteristics to those in the mid-ocean ridge basalts (MORB). The Taoxinghu metabasites may represent the fragment of Early Paleozoic ophiolite in the "Central Uplift" of the Qiangtang, northern Tibetan Plateau.

关键词： Qiangtang cumulate gabbro SHRIMP dating Hf isotope