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| 1 | Historical records of polycyclic aromatic hydrocarbon deposition in a shallow eutrophic lake:Impacts of sources and sedimentological conditions显示文摘Sediment core samples collected from Lake Chaohu were analyzed for 15 priority polycyclic aromatic hydrocarbons(PAHs)to assess the spatial and temporal distributions of the PAHs during lacustrine sedimentary processes and regional economic development.Assessing the PAH sedimentary records over an approximately 100-year time span,we identified two stages in the PAH inputs and sources(before the 1970 s and after the 1970s)in the eastern lake region near a village,whereas three stages(before the 1950 s,1950s–1990s and after the1990s)were identified in the western lake region near urban and industrial areas.Rapid increases in the PAH depositional fluxes occurred during the second stage due to increased human activities in the Lake Chaohu basin.The composition and isomeric ratios of the PAHs revealed that pyrolysis is the main source of PAHs in this lake.Strong positive relationships between PAH concentration and the total organic carbon concentration,sediment grain size(< 4 μm),as well as the local population and Gross Domestic Product indicated that the sedimentary conditions impact the depositional characteristics of the PAHs;simultaneously,socioeconomic activities,such as energy consumption and the levels of urban industrialization and civilization,affect both the composition and abundance of the PAHs. | Chaocan Li Shouliang Huo Zhiqiang Yu Wei Guo Beidou Xi Zhuoshi He Xiangying Zeng Fengchang Wu | 2016 | Journal of Environmental Sciences2016，28，3： | 6 |
| 2 | Qo S-Based Service Selection with Lightweight Description for Large-Scale Service-Oriented Internet of Things显示文摘Quality of Service(Qo S)-based service selection is the key to large-scale service-oriented Internet of Things(IOT), due to the increasing emergence of massive services with various Qo S. Current methods either have low selection accuracy or are highly time-consuming(e.g., exponential time complexity), neither of which are desirable in large-scale IOT applications. We investigate a Qo S-based service selection method to solve this problem. The main challenges are that we need to not only improve the selection accuracy but also decrease the time complexity to make them suitable for large-scale IOT applications. We address these challenges with the following three basic ideas. First, we present a lightweight description method to describe the Qo S, dramatically decreasing the time complexity of service selection. Further more, based on this Qo S description, we decompose the complex problem of Qo S-based service selection into a simple and basic sub-problem. Finally, based on this problem decomposition, we present a Qo S-based service matching algorithm, which greatly improves selection accuracy by considering the whole meaning of the predicates. The traces-driven simulations show that our method can increase the matching precision by 69% and the recall rate by 20% in comparison with current methods.Moreover, theoretical analysis illustrates that our method has polynomial time complexity, i.e., O.m2 n/, where m and n denote the number of predicates and services, respectively. | Chaocan Xiang Panlong Yang Xuangou Wu Hong He Shucheng Xiao | 2015 | Tsinghua Science and Technology2015，20，4： | 5 |
| 3 | Apparent relationships between anthropogenic factors and climate change indicators and POPs deposition in a lacustrine system显示文摘Climate change and anthropogenic activities are expected to impact the environmental behaviors and fates of persistent organic pollutants(POPs), however, quantitative studies on these combined factors are scarce. In this study, dichlorodiphenyltrichloroethane(DDTs), polycyclic aromatic hydrocarbons(PAHs), and polychlorinated biphenyls(PCBs)were used as examples to identify how and when those factors may be related to the deposition of POPs in the sediment of Lake Chaohu, China, using generalized additive models(GAMs). Three historical trends of DDT, PAH, and PCB deposition were delineated in a dated sediment core encompassing ~100 years of historical record: a steady state or gradually increasing stage, a rapidly increasing stage, and a declining stage. The GAM results showed that aquatic total phosphorus(TP) concentrations and regional GDP(anthropogenic factors) were dominant contributors to POP accumulation rates in the lake sediment. The fitted relationships between air temperature and sedimentary DDT and PAH concentrations were linear and negative, while a positive linear relationship was found for PCBs, suggesting that Lake Chaohu may have become a net source for DDTs and PAHs, and a sink for PCBs, under a progressively warming climate. | Hanxiao Zhang Shouliang Huo Kevin M. Yeager Chaocan Li Beidou Xi Jingtian Zhang Zhuoshi He Chunzi Ma | 2019 | Journal of Environmental Sciences2019，31，9： | 4 |
| 4 | Influence of Annealing and Additives on the Crystallization Behavior and Properties of Poly(vinyl chloride)显示文摘Acetanilide(AC),adipic acid(AA) and potassium hydrogen phthalate(PHP) were chosen as additives to accelerate PVC crystallization and improve its mechanical properties.The influences of the additives and annealing on the crystallization behavior,micromorphology and the tensile properties were investigated by the thermal analysis,scanning electron microscopy(SEM) and the tensile test.Based on the analysis results,it was concluded that the melting peaks ranging from 110 to 200 ℃ and 200 to 240 ℃ were caused by the fusion of the fringed micelle crystals and chain-folded crystals respectively.AC advanced the fringed micelle crystal to develop,while AA and PHP promoted obviously the chain-folded crystal to grow.The addition of the foreign additives did not change the growth pattern of PVC crystallites,the growth of the micelle crystal was favorable at 110 ℃,and the chain-folded crystal was developed at higher temperature.For PVC/ AA and PVC/PHP,when annealed at 110 ℃,a regular nest like network was formed,the crystallinity and the crystallite size were increased as well,and as a result,the tensile strength,Young's modulus and the elongation at break point were improved simultaneously and greatly. | 刘亚群 ZHANG Chaocan | 2013 | Journal of Wuhan University of Technology(Materials Science)2013，28，5： | 2 |
| 5 | Study of self-crosslinking acrylate latex containing fluorine显示文摘 | Zhang Chaocan Wang Yifeng | 2003 | Journal of Applied Polymer Science2003，90，： | 1 |
| 6 | Synthesis and Adsorption Properties of Magnetic Resin Microbeads with Amine and Mercaptan as Chelating Groups显示文摘 | Zhang Chaocan Li Xi Pang Jinxing | 2001 | Journal of Applied Polymer Science2001，82，7： | 1 |
| 7 | Study of self-crosslinking acrylate latex containing fluorine 显示文摘 | Chen Yanjun Zhang Chaocan Wang Yifeng | 2003 | Journal of Applied Polymer Science2003，，90： | 1 |
| 8 | Investigation of fluorinated polyacrylate latex with core-shell structure 显示文摘 | Chaocan Zhang Yanjun Chen | 2005 | Polymer International2005，54，7： | 1 |
| 9 | Emulsifier-free latex of fluorinated acrylate copo- lymer显示文摘 | CHEN Yanjun ZHANG Chaocan CHEN Xinxin | 2006 | European Polymer Journal2006，42，3： | 1 |
| 10 | Blend films of silk fibroin and water-insoluble polyurethane prepared from an ionic liquid显示文摘 | Xiuying Liu Chaocan Zhang Weilin Xu Hongtao Liu Chenxi Ouyang | 2011 | Materials Letters2011，，15： | 1 |
| 11 | Emulsifler-free latex of fluorinated acrylate copolymer显示文摘 | Chen Yanjun Zhang Chaocan Chen Xinxin | 2006 | European Polymer Journal2006，42，3： | 1 |
| 12 | 显示文摘 | Yanjun Chen Chaocan Zhang Xirtxin Chen | 2006 | European Pol- ymer Journal2006，42，： | 1 |
| 13 | Investigation of Fluorinated Polyacrylate Latex with Core-shell Structure显示文摘 | Zhang Chaocan Chen Yanjun | 2005 | Polymer International2005，54，7： | 1 |
| 14 | Joint toxicity of heavy metals and chlorobenzenes to pyriformis Tetrahymena显示文摘 | Tian Zhang Xi Li Yang Lu Peng Liu Chaocan Zhang Hui Luo | 2013 | Chemosphere2013，，： | 1 |
| 15 | Emulsifier- free latex of fluorinated acrylate copolymer 显示文摘 | Chen Yanjun Zhang Chaocan Chen Xinxin | 2006 | European Polymer Journal2006，42，3： | 1 |
| 16 | Biological Effect Studies of Norfloxacin Complexes on Tetrahymena and Escherichia Coli by Microcalorimetry显示文摘Norfloxacin complexes Co(nor)_2·8H_2O(nor=norfloxacin) and [Co(nor)(phen)]NO_3·2H_2O(phen=1,10-phenanthroline) were synthesized and their biological activity on Tetrahymena and Escherichia coli(E.coli) was assayed by means of microcalorimetry. Massive experimental parameters such as the growth constant k, inhibitory ratio I, half inhibition concentration IC_(50) and generation time TG were obtained. Data showed that with the increase of exposing complex concentration, both complexes exhibited strong inhibition during the growth of organisms. While toxic degrees were quite different on Tetrahymena and E.coli, due to various toxic mechanisms. And complex molecular volume and the ability of the complex penetrating into cells may be the keys. | 罗慧 李曦 WANG Chenggang LINA Abdullah M Alshahrani ZENG Junmin LIU Peng ZHANG Chaocan | 2016 | Journal of Wuhan University of Technology(Materials Science)2016，31，3： | 1 |
| 17 | Cobalt complex plays a dual role in the construction of E-DNA sensor显示文摘 | Zhijun Zhang Xi Li Chenggang Wang Yan Xiong Peng Liu Chaocan Zhang | 2012 | Journal of Electroanalytical Chemistry2012，，： | 1 |
| 18 | Formation of Copolymer-Ag Nanoparticles Composite Micelles in Three-dimensional Co-flow Focusing Microfluidic Device显示文摘A novel method was presented to create composite micelles of amphiphilic copolymers and Ag nanoparticles(NPs) in a three-dimensional co-flow focusing microfluidic device(3D CFMD). Self-assembly of the copolymers was initiated by the fast mixing of water and a blend dispersion of hydrophobic Ag NPs and amphiphilic copolymers. At the same time, the hydrophobic Ag NPs enter the core of copolymer micelles, based on the hydrophobic interaction. The copolymer-Ag NPs composite micelles have a core-shell structure with copolymer shell and Ag NPs core. COMSOL Multiphysics is used to simulate the concentration distribution of copolymers and Ag NPs under different flow rates. Co-assembly microfluidic conditions are determined based on simulation results. Under suitable microfluidic conditions, both block copolymers and gradient copolymers can co-assemble with hydrophobic Ag NPs to form composite micelles, respectively. This microfluidic coassembly method will have a good prospect in the preparation of composite micelles of amphiphilic copolymers and metal nanoparticles. | 冯梦然 HE Guangyao YI Si SONG Weizheng 陈艳军 ZHANG Chaocan WANG Yifeng | 2019 | Journal of Wuhan University of Technology(Materials Science)2019，34，6： | 1 |
| 19 | Study on morphology and mechanical properties of PVC with ultrafine CaCO3 surface-modified by acrylate macromolecular modifiers显示文摘 | Zhang Ousheng Zhang Chaocan Wu Lili | | 0，，1： | 1 |
| 20 | Synthesis and adsorption properties of magnetic microbeads of polyamine resins with pendent mercapto group显示文摘 | ZHANG Chaocan LI Xi PANG Jinxing | 2001 | Journal of Applied Polymer Science2001，82，7： | 1 |
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