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Effects of repeated applications of fungicide carbendazim on its persistence and microbial community in soil

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Journal of Environmental Sciences 2009年第2期21卷 179-185页

作者： YU Yunlong,CHU Xiaoqiang,PANG Guohui,XIANG Yueqin,FANG Hua department of Plant Protection,college of Agriculture and Biotechnology,Zhejiang University,{2. 31002.,China. department of Plant Protection College of Agriculture and Biotechnology Zhejiang University Hangzhou 310029 China

Carbendazim, a systemic benzimidazole fungicide, is applied repeatedly to control plant diseases including soilborne diseases, over a growing season. Studies were carried out under laboratory conditions to assess the effects of repeated carbendazim applications on its persistence and microbial community in soil. The results indicate that dissipation of carbendazim in soil was accelerated with its application frequency. The degradation rate constant of carbendazim was increased significantly from 0.074 d-1 to 0.79 d-1. The corresponding half-life was shorten markedly from 9.3 d to 0.9 d after four repeated applications. No significant inhibitory effect of carbendazim on soil microbial utilization of the carbon sources was observed after first treatment, but a slight increase in average well color development （AWCD） was shown after second, third, and fourth applications. It suggested that soil microorganisms become adapted to carbendazim after repeated application. Simpson and Shannon indexes of soil microbial community from carbendazim treated soil were also similar to those from the control soil, indicating that the richness and dominant character of soil microorganisms remain unchangeable after repeated application. However, after first, second, and third addition of carbendazim, McIntosh indexes on day 2. were significantly higher compared with the control, suggesting that balance of soil microorganisms was altered due to the enrichment of the specific carbendazim-adapting strains in soil

关键词： carbendazim degradation soil microorganism repeated application

Variational Inclusions for Fuzzy Mappings

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Chinese Quarterly Journal of mathematics 1998年第3期13卷 23-28,页

作者： Bai Chuanzhi (department of mathematics,Huaiyin normal {2.,Jiangsu,2.3001) 淮阴师范专科学校数学系江苏淮阴 223001

In this paper,a perturbed iterative algorithm for finding approximate solutions of variational inclusions for fuzzy mapping,is presented and a convergence result which includes,as a special case,some known results in ... 详细信息

关键词： variational inclusions fuzzy mappings iterative algorithm

Rose solutions with three petals for planar 4-body problems

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Science China mathematics 2010年第12期53卷 3085-3094页

作者： DENG ChunHua 1,2., ZHANG ShiQing 1, & ZHOU Qing 3 1 Yangtze Center of mathematics and college of mathematics, Sichuan University, Chengdu 610064, China 2.Faculty of mathematics and Physics, Huaiyin Institute of Technology, Huai’an 2.3001, China 3 department of mathematics, East China normal University, Shanghai 2.0062. China 1. Yangtze Center of mathematics and college of mathematics Sichuan University Chengdu 610064 China2. Faculty of Mathematics and Physics Huaiyin Institute of Technology Huai’an 223001 China3. Department of Mathematics East China Normal University Shanghai 200062 China

For planar Newtonian 4-body problems with equal masses, we use variational methods to prove the existence of a non-collision periodic choreography solution such that all bodies move on a rose-type curve with three pet... 详细信息

关键词： 4-body problems with Newtonian potentials rose solutions with three petals winding numbers variational minimization methods

Strong Approximation Theorems for Sums of Random Variables when Extreme Terms are Excluded

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Acta Mathematica Sinica,English Series 2002年第2期18卷 311-326页

作者： ZHANG Li Xin department of mathematics.Zhejiang University,Xixi Campus.hangzhou 31002.,P.R.China E-mail:lxzhang@*** department of mathematics Zhejiang University Hangzhou P. R. China

Let{X_n:n≥1}be a sequence of *** variables and let X_n^((r))=X_j if|X_j| is the r-th maximum of |X_1|……|X_n|.Let S_n=X_1+…+X_n and ^(r)S_n=S_n(X_n^(1)+…+X_n^(r)).Sufficient and necessary conditions for ^(r)S_n approximating to sums of independent normal random variables are *** approximation results,the convergence rates of the strong law of large numbers for ^(r)S_n are studied.

关键词： Strong approximation Extreme value Strong law of large numbers Complete convergence

A novel multi-relay cross-layer cooperative communication strategy based on Jackson queuing model

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Science China(Information Sciences) 2010年第4期53卷 842-853页

作者： XU XiaoRong1,2. & ZHENG BaoYu1 1Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 2.0003, China 2.0} of Telecommunication Engineering, hangzhou Dianzi University, hangzhou 310018, China Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications Nanjing China college of Telecommunication Engineering Hangzhou Dianzi University Hangzhou China

A novel multi-relay cooperative communication strategy based on Jackson queuing model is pro-posed, which is implemented via a cross-layer design between the physical (PHY) layer and the medium access control (MAC) layer. In the PHY layer, we focus mainly on system outage performance by analyzing in detail the relationship between the SNR threshold and the outage probabilities. While in the MAC layer, system model is treated as a Jackson queuing network, and the queue discipline for each node is assumed to be GI/M/1 model. System throughput and delay performance for the proposed strategy are also illustrated. Simulation results of the proposed cross-layer scheme are presented to validate our theoretical derivations. It is revealed that, the number of cooperative nodes influences system outage performance at high spectral efficiency regimes in the PHY layer while the proposed strategy provides a better throughput and delay performance than conventional schemes in the MAC layer.

关键词： multi-relay cooperative communication cross-layer design Jackson queuing model outage prob- abilities GI/M/1 model system throughput delay performance

An extended theory of global workspace of consciousness

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Progress in Natural Science:Materials International 2008年第7期18卷 789-793页

作者： Xiaolan Songa,b,c, Xiaowei Tang b,* a department of Psychology, Zhejiang normal University, Jinhua 32.004, China b Bio-X Laboratory, department of Physics, Zhejiang University, hangzhou 31002., China c department of Psychology and Behavior Science, Zhejiang University, hangzhou 31002., China department of Psychology Zhejiang Normal University Jinhua 321004 China Bio-X Laboratory Department of Physics Zhejiang University Hangzhou 310027 China department of Psychology and Behavior Science Zhejiang University Hangzhou 310028 China

Global Workspace theory and Global Neuronal Workspace hypothesis are frameworks about the mechanism of the consciousness, which argued that it is the global workspace that makes awareness. These two theories ignored an important fact that the content of consciousness is not only from the instant sensory input, but also from the inward mind representation. The existence of the default mode network of brain indicates that without the sensory input from instant environment, the brain can carry out organized activities which have intense relationship with inward information processing. This article combines the hypothesis of brain’s default mode network and the classical Global Workspace theory, and put forward an extended theory about global workspace of consciousness.

关键词： Global workspace Global neuronal workspace The default mode network

HEAT KERNELS ON normal LIE GROUPS

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Chinese Science Bulletin 1989年第13期34卷 1061-1065页

作者：陈杰诚 department of mathematics Hangzhou University

Let G be a connected unimodular Lie group, （?） be its Lie algebra which consists of all left invariant vector fields on G. Take a base {（?）j}1n, of （?）, a Haar measure dy on G and a sub-Laplace operator （?）=su... 详细信息

关键词： normal Lie groups heat kernels Riesz transform square operator

Continuity of Higher Order Commutators on Certain Hardy Spaces

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Acta Mathematica Sinica,English Series 2002年第2期18卷 391-404页

作者： DING Yong LU Shan Zhen department of mathematics,Beijing normal University,Beijing 100875.P.R.China E-mail:dingy@*** lusz@***ZHANG Pu department of mathematics.Zhejiang University(at Xixi Campus).hangzhou 31002.,P.R.China,E-mail:zhpjj@2.3,net department of mathematics Beijing Normal University Beijing P.R. China department of mathematics Zhejiang University (at Xixi Campus) Hangzhou P.R. China

In this *** authors study the continuity properties of higher order commutators generated by the homogeneous fractional integral and BMO functions on certain Hardy spaces,weak Hardy spaces and Herz-type Hardy spaces.

关键词： Fractional integral Homogeneous kernel L^r-Dini condition Hardy space Herz-type Hardy space

The effects of incubation temperature on hatching success and size and performance of hatchling soft-shelled turtles, trionyx sinensis

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The effects of incubation temperature on hatching success an...