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An analysis on the evolvement processes of lake eutrophication and their characteristics of the typical lakes in the middle and lower reaches of Yangtze River

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Chinese Science Bulletin 2006年第13期51卷 1603-1613页

作者： CHENG Xiaoying1,2,3.& LI Shijie1 1. Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, china 2. The Key laboratory of Industrial Biotechnology, ministry of Educa- tion, Southern Yangtze University, Wuxi 21403., china 3. School of Biotechnology, Southern Yangtze University, Wuxi 21403., china Nanjing Institute of Geography & Limnology Chinese Academy of Sciences Nanjing China The Key laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi China School of Biotechnology Southern Yangtze University Wuxi China

According to the study on the aquatic environment of the typical lakes in the middle and lower reaches of Yangtze River, lake eutrophication is a process in which the lake ecosystem degenerates, resulting in the deterioration of the water quality due to the enrichment of the nutrients. Moreover, the succession of lake ecosystem and change of water quality both couple well with the evolvement of tro- phic state. Then the conceptual model is mentioned and ten lake states are classified. Based on these, the authors analyzed the eutrophication processes of the typical lakes in the middle and lower reaches of Yangtze River. The large lakes with taking in - send- ing out water typical of Poyang Lake evolve from State 1 before the 1980s into State 2 after the 1980s, the large and medium lakes typical of Taihu Lake evolve from State 1-2 in the 1960s into State 8 in the 1980s then into State 9 in the 1990s, the medium and small shallow lakes typical of Honghu Lake evolve from State 1 in the 1960s into State 2 after the 1980s and the small city (suburban) lakes typical of Donghu Lake evolve from State 2 in the 1960s into State 9 after the 1970s. Further, the 1980s is the key con- version period of the lakes of various types typical of Poyang Lake, Honghu Lake and Taihu Lake con- verting into mesotrophic state, the 1990s is that of Taihu Lake into eutrophic state and the 1970s is thatof the small city (suburban) lakes typical of Donghu Lake into eutrophic state. The series of nutrient evolvement of different typical lakes are similar, but the processes are not synchronous, which is related to the various human and natural driving mechanisms in lake basins.

关键词：长江湖泊富营养化概念模型转变时期驱动机制

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A decision-making model of development intensity based on similarity relationship between land attributes intervened by urban design

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Science china(Technological Sciences) 2010年第7期53卷 1743-1754页

作者： WANG JianGuo1, ZHANG Yu2 & FENG Han3.1 School of Architecture, Southeast University Key laboratory for Urban and Architectural Heritage Conservation, ministry of education, Nanjing 210096,{3. 2 School of Architecture, Southeast University, Nanjing 210096,{3. 3.Faculty of Architecture, Delft University of Technology, 2628 CR Delft, Netherlands Key laboratory for Urban and Architectural Heritage Conservation Ministry of Education Nanjing China School of Architecture Southeast University Nanjing China Faculty of Architecture Delft University of Technology Delft Netherlands

The paper presents a dynamic model intervened by urban design for the decision-making of land development intensity, which expresses the inherent interaction mechanism between lands based on the evaluation of land attributes and their similarity relationship. Each land unit is described with several factors according to their condition and potential for development, such as land function, accessibility, historical site control, landscape control, and so on. Then, the dynamic reference relationship between land units is established according to the similarity relationship between their factors. That means lands with similar conditions tend to have similar development intensities, which expresses the rule of the spontaneous urban development. Therefore, the development intensities of the pending lands can be calculated by the confirmed ones. Furthermore, the system can be actively intervened by adjusting the parameters according to urban design or planning intentions. And the reaction of the system offers effective support and reference for reasonable decision. The system with multiple intervention input is not only a credible tool for deriving development intensities, but also a platform to activate urban design conception. Above all, the system as a socio-technical tool integrates the optimization of form, function and environment, and embodies the principle of impersonality, justice and flexibility in the decision of land development intensity.

关键词： land development intensity urban design land attribute similarity relationship complex system FAR

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Study on Laccase-Catalyzed Oxidation of Disubstituted Ferrocene and π-arene-π- cyclopentadienyliron Derivatives

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wuhan University Journal of Natural Sciences 2000年第3期5卷 351-356页

作者： Ji Li-cai1, Hu Pei-zhi2, Jin Chang-hua3., Ding Zi-rong2 1. College of Adult education, wuhan University, wuhan 43.072,{3. 2. Col lege of Chemistry and environment Science, wuhan University, wuhan 43.072, C hina 3.Yiping Plant of Chemistry and Industry at Zhong Qing City, Zhong Qing 63.3.3.{3. College of Adult education Wuhan University Wuhan 430072 China College of Chemistry and environment Science Wuhan University Wuhan 430072 China Yiping Plant of Chemistry and Industry at Zhong Qing City Zhong Qing 631323China

It is studied that Rhus vernicifera laccase catalyzed oxidation of 26 disubstituted ferrocene and its metal complexes, π-arene-π-cyclopentadienyliron derivatives and metal meso-(tetra-4-sulfanatophenyl)porphyrin in the diethylene glycol monobutyl ether (DGBE)/phosphate buffer (V/V, 1/5). It is found that 1,1′-bishydroxylmethyl ferrocene etc 16 compounds are new substrates of laccase. The relation of structure and function of substrates is discussed. The affective factors of laccase-catalyzed oxidation of 1,1′-bishydroxyl-methyl ferrocene—pH, temperature, substrate concentration, laccase quantity and surfactant were investigated further.

关键词： Key words Rhus vernicifera laccase disubstituted ferrocene catalytic oxidation π arene π cyclopentadienyliron

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Capability description and discovery of Internetware entity

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Science china(Information Sciences) 2010年第4期53卷 685-703页

作者： WANG PuWei1*, JIN Zhi2,3. & LIU HongYan4 1Key laboratory of Data Engineering and Knowledge Engineering of the ministry of education, Renmin University of{3., Beijing 100872,{3. 2Key laboratory of High Confidence Software Technologies of the ministry of education, Peking University, Beijing 100871,{3. 3.cademy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100190,{3. 4Department of Management Science and Engineering, Tsinghua University, Beijing 100084,{3. Key laboratory of Data Engineering and Knowledge Engineering of the ministry of education Renmin University of China Beijing China Key laboratory of High Confidence Software Technologies of the ministry of education Peking University Beijing China Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing China Department of Management Science and Engineering Tsinghua University Beijing China

Internetware can be formed through aggregation of Internetware entities bottom-up to satisfy the user's requirements. In the process, capability description of Internetware entity plays an important role. This paper proposes a capability description of Internetware entity based on environment ontology. The environment ontology includes environment entities and possible interactions with the environment entities in a particular domain. Tree-like hierarchical state machines are also included in the ontology to describe domain life-cycle of the environment entities. On the basis of the ideas, the capability of Internetware entity is embodied by interacting with environment entities and the changes of the environment entities during the interactions. Finally, this paper describes the matchmaking between capability descriptions of Internetware entities to support the discovery of Internetware entity. An example of online education course is given to illustrate the ideas.

关键词： Internetware capability description domain environment ontology tree-like hierarchical state machine

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Influence of TiO_2 Nano Particles on the Resistance to Corrosion and Mechanism of Cr_2O_3

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稀有金属材料与工程 2012年第S1期41卷 319-322页

作者： Cheng Xudong1,Peng Sheng1,Zhou Jiliang2,Zhu Zhenqi1 1 State Key laboratory of Advanced Technology for Materials Synthesis and Processing,wuhan University of Technology,wuhan 43.070,{3. 2 Key laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission&ministry of education,Hubei Province,South-central University for Nationalities,wuhan 43.074,{3. wuhan Univ Technol State Key Lab Adv Technol Mat Synth & Proc Wuhan 430070 Peoples R China State Ethn Affairs Commiss Key Lab Catalysis & Mat Sci Wuhan 430074 Hubei Province Peoples R China S Cent Univ Nationalities Minist Educ Wuhan 430074 Hubei Province Peoples R China

Cr2O3.based ceramic composite coatings with a NiCr intermediate layer adding nano TiO2 particles were synthesized by Air plasma spraying(APS)followed further seal *** coating samples were characterized by X-ray diffractions(XRD),scanning electron microscope(SEM).The corrosion behavior of coating was measured by weight loss in three solutions(HCl,NaOH,and NaCl).The relationships between the microstructure,corrosion behavior,and the content of TiO2 in coatings were *** the content of TiO2 was relative high,the coating was composed of(Cr0.88Ti0.12)2O3.and Cr2O3.*** sealing,the coating weight decreased all long in three kinds of ***,after sealing treatment the coating weight decreased early but increased later,changed periodically as *** curve and electrochemical impedance spectroscopy(EIS) were performed to study the corrosion *** results showed that like organic coating,the corrosion of ceramic coating included three stages,in which the weight of samples decreased or increased corresponding to different physical and physical or chemical *** salt spray test showed the Cr2O3.based ceramic composite coating had an excellent decay resistance in marine environment.

关键词： corrosion resistance ceramic coating air plasma spray

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First report of Protokeelia spinifera and Rhopalodia iriomotensis from china,with comments on their systematic positions

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Journal of Systematics and Evolution 2009年第2期47卷 173-178页

作者： 1,2Yang LI 2Ya-Hui GAO 1,3.ong-Hui LU 1(College of Life Sciences,South china Normal University,Guangdong Provincial Key Lab of Biotechnology for Plant Development,Guangzhou 51063.,china) 2(Key laboratory for Subtropical Wetland Ecosystem Research,{3. of education,School of Life Sciences,Xiamen University,Xiamen 3.1005,china) 3.Institute of Harmful Algae and Aquatic environment,Jinan University,Guangzhou 51063.,china) College of Life Sciences South China Normal University Guangdong Provincial Key Lab of Biotechnology for Plant Development Guangzhou 510631 China Key laboratory for Subtropical Wetland Ecosystem Research Ministry of Education School of Life Sciences Xiamen University Xiamen 361005 China Institute of Harmful Algae and Aquatic environment Jinan University Guangzhou 510632 China

Protokeelia is described as a new and rare pennate diatom genus in *** valve includes two parts:ventral valve and dorsal *** ventral valve is more or less convex or *** raphe runs in a distinct elevated and thickened siliceous *** the internal valve,beneath the raphe are fibulae or fibulae clusters which connect the ventral and dorsal *** species,*** Round & Basson,is observed in the water samples from a mangrove forest in Sai Kung,Hong Kong,*** main morphological features are described in this paper along with electron microscope(EM) *** comparisons are also made among several allied *** addition,a newly recorded species for china,Rhopalodia iriomotensis Kobayasi,Nagumo & Tanaka,is discussed *** several key features observed in this species resemble those of some Pro-tokeelia species,we suggest that it may actually represent a Protokeelia species.

关键词： china new genus record Protokeelia Rhopalodia iriomotensis

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Adsorption and Insecticidal Activity of Toxin from Bacillus thuringiensis on Rectorite

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Pedosphere 2007年第4期17卷 513-521页

作者： ZHOU Xue-Yong HUANG Qiao-Yun CAI Peng YU Zi-Niu Hubei Province Key laboratory of Refractories and Ceramics Wuhan University of Science and Technology Wuhan 430081 （China）. College of Biotechnology and Chemical Engineering Tianjin University of Technology Tianjin 300191 （China） State Key laboratory of Agricultural Microbiology College of Resources and Environment Huazhong Agricultural Uni- versity Wuhan 430070 （China）

The adsorption and desorption of the toxin from Bacillus thuringiensis strain WG-001 on rectorite were studied at different toxin and/or rectorite concentrations, pH values and temperatures. The insecticidal activity of the adsorbed toxin was evaluated by determining the lethal concentration to kill 50% of the larvae of Heliothis armigera （LC50）. The adsorption of the toxin on rectorite in sodium carbonate buffer （pH 9） reached equilibrium within 0.5-1.0 h and the adsorption isotherm of the toxin followed the Langmuir equation （R^2 〉 0.99）. In the pH range from 9 to 11 （carbonate buffer）, the adsorbed toxin decreased with increasing pH. The adsorption amounts decreased with increasing rectorite：toxin ratio. The adsorption was not significantly affected by the temperature between 10 and 50 ℃. The X- ray diffraction analysis indicated occurrence of the intercalation of the rectorite by the toxin. The infrared absorption spectrum showed that the binding of the toxin did not alter its structure. The LC50 wlues of the adsorbed toxin were smaller than those of the free toxin. The rectorite protected the toxin from ultraviolet irradiation damage. The desorption of the adsorbed toxin in water ranged from 3..5% to 56.4% and from 27.4% to 41.8% in a carbonate buffer. The desorption percentage also decreased with increasing rectorite：toxin ratio.

关键词： Bacillus thuringiensis insecticidul uctivity rectorite toxin udsorption und desorption

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Editor's note

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Science china(Physics,Mechanics & Astronomy) 2008年第8期51卷 931-932页

作者： LIU Qingquan,environmental Science and Technology Center,Institute of Mechanics,Chinese Academy of Sciences ZHENG Xiaojing,Key laboratory of the Mechanics on Disaster and environment in Western{3.,ministry of education,Lanzhou University,china environmental Science and Technology Center Institute of Mechanics Chinese Academy of Sciences Beijing China Key laboratory of the Mechanics on Disaster and environment in Western china Ministry of Education Lanzhou University Lanzhou China

There has been a broad international awareness that the earth’s environment plays a critical role in the sustainable development of both human society and the global economy.

关键词： Editor’s note

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Characteristics of energy dissipation in hyperconcentrated flows

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International Journal of Sediment Research 2008年第4期23卷 387-397页

作者： An-ping SHU 1,Qing-quan LIU2,Yu-jun YI 3.and Zhi-dong ZHANG 41 Assoc.Prof.,School of environment,Key laboratory of Water and Sediment Sciences of ministry of {3.,Beijing Normal University,Beijing 100875,china2 Prof.,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080,china3.Lecturer,Dr.,School of environment,Beijing Normal University,Beijing 100875,china4 Graduate student,School of environment,Beijing Normal University,Beijing 100875,china Assoc. Prof. School of Environment Key Laboratory of Water and Sediment Sciences of Ministry of Education Beijing Normal University Beijing 100875 China Prof. Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Lecturer Dr. School of Environment Beijing Normal University Beijing 100875 China. The project is supported by the National Natural Science Foundation of China (Grant No. 10672024) Graduate student School of Environment Beijing Normal University Beijing 100875 China

An equilibrium equation for the turbulence energy in sediment-laden flows was derived on the basis of solid–liquid two-phase flow theory. The equation was simplified for two-dimensional, uniform, steady and fully developed turbulent hyperconcentrated flows. An energy efficiency coefficient of suspended-load motion was obtained from the turbulence energy equation, which is defined as the ratio of the sediment suspension energy to the turbulence energy of the sediment-laden flows. laboratory experiments were conducted to investigate the characteristics of energy dissipation in hyperconcentrated flows. A total of 115 experimental runs were carried out, comprising 70 runs with natural sediments and 45 runs with cinder powder. Effects of sediment concentration on sediment suspension energy and flow resistance were analyzed and the relation between the energy efficiency coefficient of suspended-load motion and sediment concentration was established on the basis of experimental data. Furthermore, the characteristics of energy dissipation in hyperconcentrated flows were identified and described. It was found that the high sediment concentration does not increase the energy dissipation; on the contrary, it decreases flow resistance.

关键词： Hyperconcentrated flows Turbulence energy Efficiency coefficient Energy dissipation

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A research into the large-scaled spatial forms of cities based on urban design

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Science china(Technological Sciences) 2009年第9期52卷 2486-2496页

作者： WANG JianGuo School of Architecture, Key laboratory of Urban and Architectural Heritage Conservation of ministry of education, Southeast University, Nanjing 210096,{3. School of Architecture Key laboratory of Urban and Architectural Heritage Conservation of Ministry of Education Southeast University Nanjing China

In the process of unprecedented urbanization in contemporary china, a great many of Chinese cities have witnessed a rapid expansion of urban scale to different degrees. With the continuous compilation, amendment and enforcement of urban planning, the functional structure, spatial environment, street patterns and textures and even the social aspect of cities have changed conspicuously, all of which have directly happened to the spatial forms of the dimension, or even the multi-dimension of a certain city. By describing and analyzing the structure, evolution and explicit tokens of the spatial forms of cities, this thesis attempts to set up a model of factors that affect urban forms, as well as discuss the attributes, protection, adjustment and development-potential of urban land closely associated with forms. In addition, on the basis of the professional features for urban design to participate in the modeling and construction-management of desirable spatial forms of cities, the author has put forward technical measures for quantitatively appraising and analyzing the large-scaled spatial forms of cities, thus offering technical support to municipal governments and management departments of planned construction.

关键词： large-scaled spatial forms of cities urban design digital technology

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