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Soil Moisture and Oilseed Rape Yields as Affected by Configuration of Ridge-furrow Tillage in the Semiarid Region of China

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Soil Moisture and Oilseed Rape Yields as Affected by Configu...

On adjacent-vertex-distinguishing total coloring of graphs

2.07中国科协年会

作者： Liu Muxing~1 Wang Jingai~(2.4) Liu Lianyou~(2.3) Yan Ping~(2.3) 1.college of City and Environment,Huazhong normal {2.,Wuhan 430079,China 2.Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education,beijing normal {2.,beijing 100875,China 3.college of Resources science & technology,beijing normal {2.,beijing 100875,China 4.college of Geography and Remote Sensing sciences,beijing normal {2.,beijing 100875,China

Ridge-furrow tillage is a kind of conservation tillage widely used for soil and water conservation in agriculture,with crop planted in ridge or *** previous researches mostly focus on the effects of ridge-furrow tillage with crop planted in ridges on crop growth and soil water content,Influence of ridge-forrow tillage with crop planted in furrows are not well documented,despite it is helpful to crop growth in arid and semiarid *** purpose of this study was evaluating the effect of ridge-furrow tillage with different surface configurations and crop planted in furrow,on the efficiency for rainwater harvesting and crop production,to determine the optimal surface configuration of ridge-furrow *** parameters of ridge heights (H) and ridge-furrow ratios (R,ratio between H and furrow width,W) were defined to determine the configuration of ridge-furrow *** field experiments,seasonal dynamic variation of volumetric soil water content, aboveground biomass and yields of oilseed rape (Brassica napus L.) were *** treatments included four kinds of ridge-furrow tillage with oilseed rape planted in furrow and one kind of conventional field tillage (CT) for *** results indicate that relative to CT,ridge-furrow tillage increased volumetric soil water content of the plow layer (0-30 cm) by 4.2.-12.1%,decreased its fluctuation in the growing season of oilseed *** the soil profile under ridge-furrow tillage,soil layer with the highest soil water content appeared in the depth of 0-30 cm,which helped oilseed rape absorb water by *** aboveground biomass,pods per plant and 1000-seed weigh under ridge-furrow tillage were larger than that under *** field comparison of oilseed rape yields under four forrow planting practices with 15,2. cm H and 1/6,1/12.1/2. R,we found the practice with 2. cm H and 1/2. R increased the efficiency of water harvesting,the growth and yield of the oilseed rape more ***,we recommend furr

关键词： ridge-furrow tillage furrow planting volumetric soil water content aboveground biomass theoretical yield rainfed agriculture

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science China Mathematics 2005年第3期48卷 289-299页

作者： ZHANG Zhongfu, CHEN Xiang’en, LI Jingwen, YAO Bing, LU Xinzhong & WANG Jianfang college of Mathematics and information {2., Northwest normal university, Lanzhou 730070, China Department of Computer, Lanzhou normal college, Lanzhou 730070, China Institute of Applied Mathematics, Lanzhou Jiaotong university, Lanzhou 730070, China college of information and Electrical Engineering, Lanzhou Jiaotong university, Lanzhou 730070, China Institute of Applied Mathematics, Chinese Academy of {2.s, {12. 100080, China college of Mathematics and information {2. Northwest Normal University Lanzhou China Department of Computer Lanzhou Normal College Lanzhou China Institute of Applied Mathematics Lanzhou Jiaotong University Lanzhou China college of information and Electrical Engineering Lanzhou Jiaotong University Lanzhou China Institute of Applied Mathematics Chinese Academy of Sciences Beijing China

In this paper, we present a new concept of the adjacent-vertex-distinguishing total coloring of graphs (briefly, AVDTC of graphs) and, meanwhile, have obtained the adjacent-vertex-distinguishing total chromatic number... 详细信息

关键词： graph, proper total coloring, adjacent-vertex-distinguishing total coloring, adjacent-vertex-distinguishing total chromatic number.

Finite automata based on quantum logic and monadic second-order quantum logic

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science China(information sciences) 2010年第1期53卷 101-114页

作者： LI YongMing college of Computer science, Shaanxi {2. university, Xi’an 710062. China college of Computer science Shaanxi Normal University Xi’an China

We introduce monadic second-order quantum logic and prove that the behaviors of finite automata based on quantum logic are precisely the quantum languages definable with sentences of our monadic secondorder quantum logic. This generalizes Büchi’s and Elgot’s fundamental theorems to quantum logic setting. We also consider first-order quantum logic and show that star-free quantum languages and aperiodic quantum languages introduced here coincide with the first-order quantum definable ones. This generalizes Schützenberger’s fundamental theorems to quantum logic setting. The determinazation of finite automata based on quantum logic is studied by introducing the generalized subset construction method. Then the Kleene theorem in the frame of quantum logic is presented here.

关键词： quantum logic finite automaton monadic second quantum logic quantum language quantum computation Kleene theorem

Perturbed solution of sea-air oscillator for the El Nino/ La Nina-Southern Oscillation mechanism

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Acta Oceanologica Sinica 2009年第3期28卷 1-4页

作者： ZHOU Xianchun LIN Yihua WANG Hui MO Jiaqi college of Electronic and information Engineering Nanjing University of information Science and Technology Nanjing 210044 China Division of Computational science E-Institutes of Shanghai Universities at SJTU Shanghai 200240 China State Key Laboratory of Numerical Modeling for Atmospheric sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China National Marine Environmental Forecastins Center Beijing 100081 China Department of Mathematics Anhui Normal University Wuhu 241000 China

A class of coupled system of the E1 Nino/La Nina-Southern Oscillation （ENSO） mechanism is studied. Using the perturbed theory, the asymptotic expansions of the solution for ENSO model are obtained and the asymptotic... 详细信息

关键词： nonlinear perturbation theory E1 Nino/La Nina-Southern Oscillation model

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基于支持向量回归的无线传感器网络定位算法

通信学报 2009年第10期30卷 44-50页

作者：魏叶华李仁发罗娟付彬湖南师范大学物理与信息科学学院湖南长沙410081 湖南大学计算机与通信学院湖南长沙410082

针对一些增量定位中误差容易累积和集中式算法通信开销较大问题,提出了一种基于支持向量回归的半集中式定位算法,中心节点收集锚节点位置和网络连通信息作为训练样本,使用支持向量回归技术得到连通信息到节点位置的映射函数,分发到普通... 详细信息

针对一些增量定位中误差容易累积和集中式算法通信开销较大问题,提出了一种基于支持向量回归的半集中式定位算法,中心节点收集锚节点位置和网络连通信息作为训练样本,使用支持向量回归技术得到连通信息到节点位置的映射函数,分发到普通节点后即可使用此函数完成自身定位。为增加训练样本,对邻居锚节点达到3个的普通节点,使用基于RSSI测距的最小二乘法进行定位,升级为锚节点。分析和仿真表明,算法减少了通信开销,减轻了测距误差影响,并获取了较高的定位精度。

关键词：无线传感器网络定位支持向量回归最小二乘

Note about Fixed Points of Scott Continuous Self-Mappings

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Journal of Mathematical Research and Exposition 2011年第1期31卷 187-190页

作者： Xiao Yong XI1,2.Yong Ming LI3 1.college of Mathematics and information {2.,Shaanxi normal university,Shaanxi 710062.P.R.China 2.college of Mathematics {2.,Xuzhou normal university,Jiangsu 2.1009,P.R.China 3.college of Computer {2.,Shaanxi normal university,Shaanxi 710062.P.R.China college of Mathematics and Info'rmatio'n science Shaanxi Normat University Shaanxi 710062 college of Computer science Shaanxi Normal University Shaanxi 710062

It is discussed in this paper that under what conditions, for a continuous domain L, there is a Scott continuous self-mapping f ： L → L such that the set of fixed points fix（f） is not continuous in the ordering induced by L. For any algebraic domain L with a countable base and a smallest element, the problem presented by Huth is partially solved. Also, an example is given and shows that there is a bounded complete domain L such that for any Scott continuous stable self-mapping f, fix（f） is not the retract of L.

关键词： Scott continuous fixed points stable mapping.

原核生物类泛素蛋白Pup-蛋白酶体系统的研究进展

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生物化学与生物物理进展 2011年第12期38卷 1091-1098页

作者：汪春军林进张俊杰北京林业大学理学院北京100083 北京师范大学生命科学学院细胞增殖及调控生物学教育部重点实验室北京100875

真核泛素-蛋白酶体系统是细胞内蛋白质降解的重要机制,参与细胞生理功能调控,因此泛素-蛋白酶体通路的机制和功能研究备受关注.2.世纪80年代,人们就发现放线菌中存在原核蛋白酶体,但是对于原核蛋白酶体的功能和作用机理长期以来了解甚少... 详细信息

真核泛素-蛋白酶体系统是细胞内蛋白质降解的重要机制,参与细胞生理功能调控,因此泛素-蛋白酶体通路的机制和功能研究备受关注.2.世纪80年代,人们就发现放线菌中存在原核蛋白酶体,但是对于原核蛋白酶体的功能和作用机理长期以来了解甚少.2.08年,Pearce等在结核分枝杆菌中发现了原核类泛素蛋白(prokaryotic ubiquitin-like protein,Pup).在Dop、PafA、Mpa等辅助因子的作用下,Pup可以共价标记多种功能蛋白,并介导被标记蛋白质通过蛋白酶体降解,Pup-蛋白酶体系统的发现揭示了原核生物中一个崭新的蛋白质降解机制.Pup-蛋白酶体系统的靶蛋白涉及物质中间代谢、信号通路、毒性和抗毒性因子、细胞壁和细胞膜组分等多个方面,并且与结核分枝杆菌的致病性相关,被认为是新的结核病治疗药物靶点.本文就原核Pup-蛋白酶体系统的作用机理及其功能的研究进展作一综述.

关键词：原核类泛素蛋白(Pup) 蛋白酶体蛋白质降解结核分枝杆菌

Risk assessment and validation of flood disaster based on fuzzy mathematics

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Progress in Natural science:Materials International 2009年第10期19卷 1419-1425页

作者： Weiguo Jiang a,b,Lei Denga,b,Luyao Chenc,Jianjun Wu a,b,Jing Lia,b a Key Laboratory of Environment Change and Natural Disaster,MOE,beijing normal {2.,beijing 100875,China b Academy of Disaster Reduction and Emergency Management,MOCA&MOE,beijing normal {2.,beijing 100875,China c Department of Geography,Texas A&M {2.,college Station,TX 77843-3147,USA Key Laboratory of Environment Change and Natural Disaster MOE Beijing Normal University Beijing 100875 China Academy of Disaster Reduction and Emergency Management MOCA&MOE Beijing Normal University Beijing 100875 China Department of Geography Texas A&M University College Station TX 77843-3147 USA

Floods often take place around rivers and plains,which indicates a higher risk of flooding in these *** paper adopts fuzzy comprehensive assessment(FCA),simple fuzzy classification(SFC),and the fuzzy similarity method(FSM) to assess flood disaster risk in Kelantan,*** data,such as the flooded area,paddy area,urban area,residential area,and refuges,were overlaid to validate and analyze the accuracy of flood disaster *** results show that(1) 70-75% of flooded areas lie within the higher and high-est risk zones,which shows an effective assessment accuracy;(2. paddy,built-up,and residential areas concentrated in the higher and highest risk zones are more likely to be destroyed by flood disasters;(3) 2.0-2.5 refuges in the higher and highest risk zones account for around 50% of all refuges,which means that more refuges should be built in the higher and highest risk zones to meet the accommodation requirement;(4) three methods proved to be feasible and effective in evaluating flood disaster risk,among which FCA is more suitable for the study area than the two other methods.

关键词： Flood disaster Risk assessment Risk validation Fuzzy mathematics Malaysia

Cloning and functional analysis of chloroplast division gene NtFtsZ2.l in Nicotiana tabacum

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Progress in Natural science:Materials International 2003年第5期 39-43页

作者： KONG Dongdong , JU Chuanli, WANG Dong, HU Yong, ZHU Zhiqing, HE Yikun and SUN Jingsan (1. Key Laboratory of Photosynthesis and Enviromental Molecular Physiology, Institute of Botany, Chinese Academy of sciences, beijing 100093, China 2. Department of Biology, Capital {2. university, beijing 100037, China 3. Laboratory of Agronomy and Biotechnology, China Agricultural university, beijing 100037, China 4. college of Life sciences, beijing normal university, beijing {12., China)

FtsZ protein plays an important role in the division of chloroplasts. With the finding and functional analysis of higher plant FtsZ proteins, people have deepened the understanding in the molecular mechanism of chloroplast division. Multiple ftsZ genes are diversified into two families in higher plants, ftsZ1 and ftsZ2.. On the basis of the research on ftsZl family, we analyzed the function of NtFtsZ2.l gene in Nicotiana tabacum . Microscopic analysis of the sense and antisense NtFtsZ2.l transgenic tobacco plants revealed that the chloroplasts were abnormal in size and also in number when compared with wild-type tobacco chloroplasts. Our investigations confirmed that the NtFtsZ2.l gene is involved in plant chloroplast division.

关键词： Nicotiana tabacum NtFtsZ2.l gene chloroplast division.