期刊：
Water Science and Technology,1995年32(3):219-228 ISSN：0273-1223
通讯作者：
Zhu, T.
作者机构：
[Zhu, T. ; Sikora, F.J. ] TENNESSEE VALLEY AUTHOR, ENVIRONM RES CTR, MUSCLE SHOALS, AL 35660 USA.
通讯机构：
[Zhu, T] S CHINA INST ENVIRONM SCI, CANTON, PEOPLES R CHINA.
关键词：
Plant-gravel system - Wetlands
摘要：
A greenhouse experiment was conducted at Tennessee Valley Authority, Alabama, USA, in the summer of 1993 to investigate ammonium and nitrate removal processes in constructed wetlands. Microcosm wetlands cells were used in the study and consisted of plastic containers with 0.4 ×0.35 m<sup>2</sup> surface area and 0.5 m depth. Two separate experiments were conducted. One experiment analyzed NH<inf>4</inf>-N removal and the other analyzed NO<inf>3</inf>-N removal. Nutrient solutions containing approximately 48 mg/l NH<inf>4</inf>-N or NO<inf>3</inf>-N were added in a batch mode to the wetland microcosms and the solution chemistry was analyzed with time. Treatments consisted of unplanted cells or cells planted with canarygrass (Phalaris arundinacea), reed (Phragmites communis), bulrush (Scirpus atrovirens georgianus) or typha (Typha latifolia). Another treatment consisted of added nutrient solutions containing or not containing C at 112 mg/l. In the NH<inf>4</inf>-N removal experiment, the rate of NH<inf>4</inf>-N removal occurred in the order: reed >canarygrass = bulrush >typha ≫unplanted in wetland cells with and without C. The order of NH<inf>4</inf>-N removal was believed to be associated with the density of root biomass in the gravel. The greater the root biomass, the greater the chance for plant N uptake or nitrification mediated by O<inf>2</inf> transport to the rhizosphere. In the NO<inf>3</inf>-N experiment, the rate of NO<inf>3</inf>-N removal occurred in the order: reed = canarygrass >typha = bulrush >unplanted cells. Labelled K<sup>15</sup>NO<inf>3</inf> was used to trace the NO<inf>3</inf>-N removal process. By measuring the <sup>15</sup>N in the plant biomass, the quantity of NO<inf>3</inf>-N removed via plant uptake was delineated from combined removal processes of denitrification and immobilization. In the treatments with C, 55 to 70% of the NO<inf>3</inf>-N was removed via denitrification and immobilization. For bulrush, reed and typha, the quantity of NO<inf>3</inf>-N removed via denitrification and immobilization without added C was reduced to 14 to 30%. However, NO<inf>3</inf>-N removal via denitrification and immobilization remained high at 72% of added NO<inf>3</inf>- N in canarygrass cells due to high concentrations of organic C released from the canarygrass roots (15-20 mg/l C) that apparently did not limit denitrification or immobilization.
期刊：
Journal of environmental radioactivity,2010年101(6):504-508 ISSN：0265-931X
通讯作者：
Wang, JS
作者机构：
[Hu, Xin-jiang; Wang, Jing-song; Bao, Zheng-lei; Xie, Shui-bo] School of Urban Construction, University of South China, 28 West Changsheng Road, Hengyang, Hunan 421001, China;[Wang, Jing-song; Xie, Shui-bo] Hunan Key Laboratory of Pollution Control and Resource Reuse, University of South China, Henyang, Hunan 421001, China;[Hu, Xin-jiang; Liu, Yun-guo] College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
通讯机构：
[Wang, Jing-song] School of Urban Construction, University of South China, 28 West Changsheng Road, Hengyang, Hunan 421001, PR China.
关键词：
Immobilized beads;Aspergillus fumigatus;Biosorption;Uranium (VI);Pseudo-second order
摘要：
Biosorption of uranium (VI) ions by immobilized Aspergillus fumigatus beads was investigated in a batch system. The influences of solution pH, biosorbent dose, U (VI) concentration, and contact time on U (VI) biosorption were studied. The results indicated that the adsorption capacity was strongly affected by the solution pH, the biosorbent dose and initial U (VI) concentration. Optimum biosorption was observed at pH 5.0, biosrobent dose (w/v) 2.5%, initial U (VI) concentration 60 mg L(-1). Biosorption equilibrium was established in 120 min. The adsorption process conformed to the Freunlich and Temkin isothermal adsorption models. The dynamic adsorption model conformed to pseudo-second order model. (C) 2010 Elsevier Ltd. All rights reserved.
摘要：
In this paper, we consider a mathematical model for HIV-1 infection with intracellular delay and cell-mediated immune response. A novel feature is that both cytotoxic T lymphocytes (CTLs) and the intracellular delay are incorporated into the model. We obtain a necessary and sufficient condition for the global stability of the infection-free equilibrium and give sufficient conditions for the local stability of the two infection equilibria: one without CTLs being activated and the other with. We also perform some numerical simulations which support the obtained theoretical results. These results show that larger intracellular delay may help eradicate the virus, while the activation of CTLs can only help reduce the virus load and increase the healthy CD(4)(+) cells population in the long term sense.
作者机构：
[Huang, Hong] Sun Yat Sen Univ, Instrumental Anal & Res Ctr, Guangzhou 510275, Guangdong, Peoples R China.;[Wang, Xiao-Feng; Zhang, Yue-Biao; Zhang, Jie-Peng; Chen, Xiao-Ming] Sun Yat Sen Univ, Sch Chem & Chem Engn, MOE Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China.;[Wang, Xiao-Feng] Univ S China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Zhang, JP] Sun Yat Sen Univ, Sch Chem & Chem Engn, MOE Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China.
摘要：
By treating Cu(NO(3))(2)center dot 3H(2)O with a V-shaped ligand 4,4'-oxydibenzoic acid (H(2)oba), a dynamic metal-carboxylate framework [Cu(2)(oba)(2)(DMF)(2)]center dot 5.25DMF (MCF-23) was synthesized, which features a wavelike layer with rhombic grids based on the paddle-wheel secondary building units. These layers stack via strong offset pi-pi stacking of the phenyl groups of oba ligands to give three-dimensional porosity. MCF-23 synthesized by conventional solvothermal methods always contains considerable and intractable impurities. In contrast, a microwave-assisted solvothermal method was proven to be a faster and greener approach to synthesize phase-pure MCF-23 in high yield. More interestingly, larger crystals suitable for single-crystal diffraction could be obtained by the multistep microwave heating mode. A powder X-ray diffraction study of MCF-23 reveals the dynamic structural transformation accompanying the release and reabsorption of the guest molecules. The N(2) (77 K) and CO(2) (195 K) gas sorption isotherms of the guest-free phase MCF-23a were measured.
期刊：
Chinese Journal of Chemical Engineering,2008年16(3):407-410 ISSN：1004-9541
通讯作者：
FAN, J.(juanfan@scut.edu.cn)
作者机构：
[ZHAN, Huaiyu; FAN, Juan] State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China;[FAN, Juan] Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, South China University of Technology, Guangzhou, 510640, China
通讯机构：
[Fan, J] S China Univ Technol, Minist Educ, Key Lab Enhanced Heat Transfer & Energy Conservat, Guangzhou 510640, Guangdong, Peoples R China.
作者机构：
[Shun Xiao; Qiyuan Wang; Qingyang He; Junji Cao] Key Lab of Aerosol Science and Technology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;[Qiyuan Wang; Zhenxing Shen] Department of Environmental Science and Engineering, Xi'An Jiaotong University, Xi'an 710049, China;[Junji Cao] Institute of Global Environmental Change, Xi'An Jiaotong University, Xi'an 710049, China;[Jun Tao] South China Institute of Environmental Sciences, SEPA, Guangzhou 510655, China;[Shun Xiao] Climate Center of Shaanxi Meteorological Bureau, Xi'an 710014, China
摘要：
Daily fine particulate (PM_(2.5)) samples were collected in Chengdu from April 2009 to February 2010 to investigate their chemical profiles during dust storms (DSs) and several types of pollution events, including haze (HDs), biomass burning (BBs), and fireworks displays (FDs). The highest PM2.5 mass concentrations were found during DSs (283.3 μg/m~3), followed by FDs (212.7 μg/m~3), HDs (187.3 μg/m~3), and BBs (130.1 μg/m~3). The concentrations of most elements were elevated during DSs and pollution events, except for BBs. Secondary inorganic ions (NO_3~?, SO_4~(2?), and NH_4~+) were enriched during HDs, while PM_(2.5) from BBs showed high K~+ but low SO_4~(2?). FDs caused increases in K~+ and enrichment in SO_4~(2?). Ca~(2+) was abundant in DS samples. Ion-balance calculations indicated that PM_(2.5) from HDs and FDs was more acidic than on normal days, but DS and BB particles were alkaline. The highest organic carbon (OC) concentration was 26.1 μg/m~3 during FDs, followed by BBs (23.6 μg/m~3), HDs (19.6 μg/m~3), and DSs (18.8 μg/m~3). In contrast, elemental carbon (EC) concentration was more abundant during HDs (10.6 μg/m~3) and FDs (9.5 μg/m~3) than during BBs (6.2 μg/m~3) and DSs (6.0 μg/m~3). The highest OC/EC ratios were obtained during BBs, with the lowest during HDs. SO_4~(2?)/K~+ and TCA/SO_4~(2?) ratios proved to be effective indicators for differentiating pollution events. Mass balance showed that organic matter, SO_4~(2?), and NO_3~? were the dominant chemical components during pollution events, while soil dust was dominant during DSs.
期刊：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2011年11(3):2389-2397 ISSN：1533-4880
通讯作者：
Chen, CY
作者机构：
[Li, Yufeng; Chen, Chunying; Liu, Ying; Qiu, Yang; Du, Jiangfeng; Li, Wei; Ge, Cuicui] CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, National Center for Nanoscience and Technology of China, Beijing 100190, China;[Li, Yufeng; Li, Bai; Chen, Chunying; Chai, Zhifang; Gao, Yuxi; Li, Wei; Ge, Cuicui] CAS Key Laboratory for Nuclear Analytical Techniques, Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China;[Du, Jiangfeng] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
通讯机构：
[Chen, CY] Inst High Energy Phys, CAS Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100190, Peoples R China.
关键词：
Catalyst Elements;Carbon Nanotubes;Inductively Coupled Plasma Mass Spectrometry;Neutron Activation Analysis
期刊：
Journal of Applied Physics,2012年111(11):113708-113708-5 ISSN：0021-8979
通讯作者：
Cao, C.
作者机构：
[Xu, Hui; Long, Meng-Qiu; Cao, Can; Chen, Ling-Na] School of Physics and Electronics, Central South University, Changsha 410083, China;[Chen, Ling-Na] School of Computer Science and Technology, University of South China, Hengyang 421001, China;[Huang, Wei-Rong] School of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410004, China
通讯机构：
[Cao, C] Cent S Univ, Sch Phys & Elect, Changsha 410083, Peoples R China.
关键词：
3d transition - Doping effects - Electronic transport properties - Graphene nanoribbons - Molecular junction - Nanospintronics - Non-equilibrium Green's function - Spin-down - Spin-up
摘要：
By using non-equilibrium Green's functions in combination with the density-functional theory, we investigate the spin transport properties of molecular junctions based on 3d transition terminated zigzag graphene nanoribbons. The results show that the electronic transport properties are strongly depending on the type of terminated atom at the edge of ribbon. The currents of spin-up and spin-down display different behaviors, and the spin-filter effects can be observed. These unconventional doping effects could be used to design novel nanospintronics devices. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4723832]
期刊：
Analytical and Bioanalytical Chemistry,2009年393(8):2075-2080 ISSN：1618-2642
通讯作者：
Xie, HL
作者机构：
[Huang, Kelong; Xie, Hualin] School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;[Liu, Jinchun; Nie, Xidu] Department of Chemistry, Hunan Institute of Technology, Hengyang 421008, China;[Fu, Liang] College of Chemistry and Chemical Engineering, Nanhua University, Hengyang 410001, China
通讯机构：
[Xie, HL] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.
摘要：
Image annotation is a task of assigning semantic labels to an image. Recently, deep neural networks with visual attention have been utilized successfully in many computer vision tasks. In this paper, we show that conventional attention mechanism is easily misled by the salient class, i.e., the attended region always contains part of the image area describing the content of salient class at different attention iterations. To this end, we propose a novel attention shaping mechanism, which aims to maximize the non-overlapping area between consecutive attention processes by taking into account the history of previous attention vectors. Several weighting polices are studied to utilize the history information in different manners. In two benchmark datasets, i.e., PASCAL VOC2012 and MIRFlickr-25k, the average precision is improved by up to 10% in comparison with the state-of-the-art annotation methods.
摘要：
The magnetic Fe3O4 nanoparticle was functionalized by covalently grafting amine group with (3-aminopropyl) trimethoxy silane, and the Fe3O4-NH2 nanoparticle and the Fe3O4 nanoparticle were characterized by Fourier transform infrared, and X-ray diffraction. And the results indicated the amine-group was immobilized successfully on the surface of Fe3O4. The adsorption behavior of uranium from aqueous solution by the Fe3O4 nanoparticle and the Fe3O4-NH2 nanoparticle was investigated using batch experiments. The pH of initial aqueous solution at 5.0 and 6.0 were in favour of adsorption of uranium, and the adsorption percentage of uranium by the Fe3O4 nanoparticle and the Fe3O4-NH2 nanoparticle were 81.2 and 95.6 %, respectively. In addition, the adsorption of uranium ions could be well-described by the Langmuir, Freundlich isotherms and pseudo-second kinetic models. The monolayer adsorption maximum capacity of the Fe3O4 nanoparticle and the Fe3O4-NH2 nanoparticle were 85.35 and 268.49 mg/g at 298.15 K, respectively, which indicate the adsorption capacity the Fe3O4 nanoparticle was improved by amine functionalization.
期刊：
Physica E: Low-Dimensional Systems and Nanostructures,2008年40(7):2400-2405 ISSN：1386-9477
通讯作者：
Peng, ZH
作者机构：
[Peng Zhihua; Ning Yantao] School of Mathematics and Physics, University of South China, Hengyang, 421001, China;[Peng Zhihua; Ou Yangyu; Peng Jingcui] School of Physics and Microelectronics Science, Hunan University, Changsha, 410082, China;[Peng Yanfeng] College of Physics and Information Science, Hunan Normal University, Changsha, 410081, China
通讯机构：
[Peng, ZH] Univ S China, Sch Math & Phys, Hengyang 421001, Peoples R China.
摘要：
In this paper, three years study on a constructed wetland wastewater treatment system at Bainikeng, Shenzhen, is reviewed and summarized. The wetland system under study occupies an area of 8400 m<sup>2</sup>, with a design flow of 3100 m<sup>3</sup> per day. The study was conducted to understand removal efficiencies of constructed wetland systems for municipal wastewaters from small or medium scale towns in the sub-tropics. Such parameters as biological oxygen demand, chemical oxygen demand, suspended solids, total nitrogen, and total phosphorus in the influent and effluent of the wetland system are examined, and their removal rates are determined. It is shown that the system is very effective in removing organic pollutants and suspended solids and its removal efficiency is much similar to those of the constructed wetlands at Tennessee Valley Authority (TVA) (Choate et al., 1990) while better than those of conventional secondary biochemical treatments.
期刊：
JOURNAL OF BIOMEDICAL NANOTECHNOLOGY,2009年5(5):521-527 ISSN：1550-7033
通讯作者：
Yuan, YL
作者机构：
[Yuan, Yali; Deng, Jian] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China;[Ding, Jianqiang; Guo, Jianbo] School of Public Health, University of South China, Hengyang 421001, China;[Xu, Jinsheng] Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, China
通讯机构：
[Yuan, YL] Univ S China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
期刊：
Science China Chemistry,2013年56(07):883-910 ISSN：1674-7291
通讯作者：
Cao, C.(czcao@hnust.edu.cn)
作者机构：
[YaXin Wu] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China;[ChenZhong Cao] Key Laboratory of Theoretical Chemistry and Molecular Simulation, Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China
摘要：
A resonance light scattering (RLS) method for the direct detection of uranium (VI) or uranyl in aqueous solution without separation procedure has been reported in this paper. Sulfo-salophen, a water-soluble tetradentate Schiff base ligand of uranyl, reacted with uranyl to form a complex. The complex reacted further with oxalate to form supramolecular dimer with large molecular volume, resulting in a production of strong RLS signal. The amount of uranium (VI) was detected through measuring the RLS intensity. A linear range was found to be 0.2-30.0 ng/mL under optimal conditions with a detection limit of 0.15 ng/mL. The method has been applied to determine uranium (VI) in environmental water samples with the relative standard deviations of less than 5 % and the recoveries of 98.8-105.8 %. The present technique is suitable for the assay of uranium (VI) in environmental water samples collected from different sources.
期刊：
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences,2008年464(2093):1257-1273 ISSN：1364-5021
通讯作者：
Ou, C.(ou@math.mun.ca)
作者机构：
[Wei Yuan; Chunhua Ou] Department of Mathematics and Statistics, Memorial University of Newfoundland, St John's, NL A1C 5S7, Canada;[Huiyan Zhu] School of Math and Physics, Nanhua University, Hengyang, Hunan 421001, China
通讯机构：
[Ou, CH] Mem Univ Newfoundland, Dept Math & Stat, St John, NF A1C 5S7, Canada.
作者机构：
[Rieser, Uwe] School of Geography, Environment and Earth Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand;[Liu, Zehua; Tan, Kaixuan; Liu, Yan; Zeng, Sheng; Xie, Yanshi] School of Nuclear Resource and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
通讯机构：
[Tan, KX] Univ S China, Sch Nucl Resource & Safety Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Quartz;Thermoluminescence;3-D spectra;Altay orogenic belt
作者：
Zou, Yanhua;Zhang, Li;Dai, Licao;Li, Pengcheng;Qing, Tao
期刊：
NUCLEAR ENGINEERING AND TECHNOLOGY,2017年49(2):335-341 ISSN：1738-5733
通讯作者：
Zou, YH
作者机构：
[Dai, Licao; Li, Pengcheng; Qing, Tao] Univ South China, Human Factors Inst, Hengyang, Hunan, Peoples R China.;[Zou, Yanhua; Zhang, Li] Hunan Inst Technol, Inst Human Factors Engn & Safety Management, Hengyang, Hunan, Peoples R China.
通讯机构：
[Zou, YH] Hunan Inst Technol, Inst Human Factors Engn & Safety Management, Hengyang, Hunan, Peoples R China.
关键词：
Digital Control System;Human Reliability Analysis;Nuclear Power Plant
摘要：
The main control room (MCR) in advanced nuclear power plants (NPPs) has changed from analog to digital control system (DCS). Operation and control have become more automated, centralized, and accurate due to the digitalization of NPPs, which has improved the efficiency and security of the system. New issues associated with human reliability inevitably arise due to the adoption of new accident procedures and digitalization of main control rooms in NPPs. The LingAo II NPP is the first digital NPP in China to apply the stateoriented procedure. In order to address issues related to human reliability analysis for DCS and DCS + state-oriented procedure, the Hunan Institute of Technology conducted a research project based on a cooperative agreement with the LingDong Nuclear Power Co. Ltd. This paper is a brief introduction to the project. Copyright (C) 2017, Published by Elsevier Korea LLC on behalf of Korean Nuclear Society.
