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| 1 | 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 |
| 2 | 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 |
| 3 | Study of self-crosslinking acrylate latex containing fluorine显示文摘 | Zhang Chaocan Wang Yifeng | 2003 | Journal of Applied Polymer Science2003,90,: | 1 |
| 4 | 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 |
| 5 | 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 |
| 6 | Investigation of fluorinated polyacrylate latex with core-shell structure 显示文摘 | Chaocan Zhang Yanjun Chen | 2005 | Polymer International2005,54,7: | 1 |
| 7 | 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 |
| 8 | 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 |
| 9 | Emulsifler-free latex of fluorinated acrylate copolymer显示文摘 | Chen Yanjun Zhang Chaocan Chen Xinxin | 2006 | European Polymer Journal2006,42,3: | 1 |
| 10 | 显示文摘 | Yanjun Chen Chaocan Zhang Xirtxin Chen | 2006 | European Pol- ymer Journal2006,42,: | 1 |
| 11 | Investigation of Fluorinated Polyacrylate Latex with Core-shell Structure显示文摘 | Zhang Chaocan Chen Yanjun | 2005 | Polymer International2005,54,7: | 1 |
| 12 | 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 |
| 13 | Emulsifier- free latex of fluorinated acrylate copolymer 显示文摘 | Chen Yanjun Zhang Chaocan Chen Xinxin | 2006 | European Polymer Journal2006,42,3: | 1 |
| 14 | 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 |
| 15 | 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 |
| 16 | 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 |
| 17 | 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 |
| 18 | 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 |
| 19 | Nanocomposite Polymer Hydrogels Reinforced by Carbon Dots and Hectorite Clay显示文摘Herein, two nanoparticles with different dimensions, spherical carbon dots (C-dots) and sheetlike hectorite clay, were used as physical crosslinkers to fabricate C-dots-clay-poly(N-isopropylacrylamide)nanocompositehydrogels (coded as C-dots-clay-PNIPAm hydrogels). The mechanical properties, fluorescence features and thermal-responsive properties of the C-dots-clay-PNIPAm hydrogels were evaluated. The experimental results indicate that synergistic effects of C-dots and hectorite clay nanoparticles are able to significantly enhance mechanical properties of the hydrogels. The hydrogels can be stretched up to 1730%with strength as high as 250 kPa when the C-dots concentration is 0.1wt%and the clay concentration is 6wt%. The hydrogels exhibit complete self-healing through autonomic reconstruction of crosslinked network a damaged interface. The hydrogels show favorable thermal-responsive properties with the volume phase transition around 34℃. In addition, the hydrogels are endowed with fluorescence features that are associated with C-dots in the hydrogels. It can be expected that the as-fabricated C-dots-clay-PNIPAm hydrogels are promising for applications in sensors, biomedical carriers and tissue engineering. | MA Shuai ZHENG Hang CHEN Yanjun ZOU Jincheng ZHANG Chaocan WANG Yifeng | 2020 | Journal of Wuhan University of Technology(Materials Science)2020,35,2: | 1 |
| 20 | Emulsifier-free latex of fluorinated acrylate copolymer 显示文摘 | Chen Yanjun Zhang Chaocan Chen Xinxin | 2006 | European Polymer Journal2006,42,3: | 1 |