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Heavy Metal Accumulation and Ecological Responses of Turfgrass to Rubbish Compost with EDTA Addition

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Journal of Integrative Plant Biology 2005年第9期47卷 1047-1054页

作者： Li-An DUO yu-Bao GAO Shu-lan ZHAO College of Chemistry and Life Sciences Tianjin Normal University Tianjin 300074 China College of Life Sciences Nankai University Tianjin 300071 China

Domestic rubbish compost is a complex-polluted system, containing multiple heavy metals, which limits its application. In the present study, Cr, Mn, Ni, Cu, Zn, Cd, and Pb accumulation and ecological responses of turfgrass to rubbish compost were investigated following the addition of EDTA. The results showed that the addition of EDTA significantly increased heavy metal accumulation in Lolium perenne L. and Festuca arundinacea L. Most heavy metal concentrations in L. perenne increased with increasing EDTA supply. The concentrations of Cr, Mn, Ni, Cu, and Cd in L. perenne were highest following the addition of 30 mmol/kg EDTA and the concentrations of Cr and Ni at this point reached concentrations of 1 914.17 and 521.25 μg/g, respectively. When the EDTA level was 〈 20 mmol/kg, the accumulation of most heavy metals in F. arundinacea increased with increasing EDTA supply, but showed a tendency to decrease at EDTA concentrations 〉20 mmol/kg. The highest concentrations of Mn, Ni, Cu, and Zn in F. arundinacea reached 268.01, 110.94, 161.52 and 1 354.97 μg/g, respectively, following the addition of 20 mmol/kg EDTA. The EDTA-induced increase in the accumulation of heavy metals in turfgrass was plantand metal-specific. L. perenne had a relatively high ability to accumulate Cr, Ni, and Zn. The highest Zn concentration was 2 979.58 μg/g and, following the addition of EDTA, the concentrations of the three metals were increased 26.23, 20.03, and 10.49-fold, respectively, compared with control. However, F. arundinacea showed a high ability to accumulate Cr, with the highest concentration （596.02 μg/g） seen following the addition of 30 mmol/kg EDTA; the concentration of Cr increased 15.51-fold compared with control. With EDTA addition, ecological responses of both turfgrass species showed that EDTA at concentrations 〈10 mmol/kg increased seed germination and aboveground net primary production （ANP） of L. perenne and slightly inhibited those of F. arundinacea, but EDTA at concentra

关键词： accumulation domestic rubbish compost EDTA heavy metal remediation turfgrass.

Fishery Web Service Composition Method Based on Ontology

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Journal of Integrative Agriculture 2012年第5期11卷 792-799页

作者： yu Qing-mei WANG lan HUANG Dong-mei School of Information Technology Shanghai Ocean UniversityShanghai 201306P.R.China

Various fishery information systems have been developed in different times and on different platforms. Wet） service application composition is crucial in the sharing and integration of fishery data and information. In the present paper, a heuristic web service composition method based on fishery ontology is presented, and the proposed web services are described. Ontology reasoning capability was applied to generate a service composition graph. The heuristic function was introduced to reduce the searching space. The experimental results show that the algorithm used considers the services semantic similarity and adiusts web service composition plan by dynamically relying on the empirical data.

关键词： web services composition semantic similarity fishery ontology heuristic function

Toxicity of Fluoranthene and Its Biodegradation by Cyclotella caspia Alga

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Journal of Integrative Plant Biology 2006年第2期48卷 169-180页

作者： yu Liu Tian-Gang Luan Ning-Ning Lu Chong-yu lan School of Life Sciences State Key Laboratory for Biocontrol Sun Yet-sen （Zhongshan） University Guangzhou 510275 China School of Environmental Sciences and Engineering Sun Yet-sen （Zhongshan） University Guangzhou 510275 China

Fluoranthene Is one of the polynuclear aromatic hydrocarbons with four benzene rings. Because of Its toxicity, mutagenlclty, and carclnogenlclty, fluoranthene Is on the black lists of 129 and 68 priority pollutants established by US Environmental Protection Agency and the People＇s Republic of China, respectively. In recent years, the amount of fluoranthene In the aquatic environment has been Increasing with Increases In anthropogenlc discharge. Based on the biological investigation of tidal water In the Futlan mangrove, Cycioteila ~aspla was selected as the dominant algal species to determine the toxicity of fluoranthene towards C. caspla alga and to Investigate the blodegradatlon of fluoranthene by C. caspla under pure culture. The toxicity experiment showed that the 96-h EC50 value for fluoranthene was 0.2 mg/mL. Four parameters, namely C. caspla algal growth rate, chlorophyll （Chl） a content, cell morphology, and superoxlde dlsmutase （SOD） activity, were chosen as Indices of toxicity and were measured at 6 d （144 h）. The results showed that：（Ⅰ） the toxicity of fluoranthene towards C. caspla alga was obvious; （Ⅱ） C. caspla algal growth rate and Chl a content decreased with Increasing concentrations of fluoranthene; and （Ⅲ） the rate of cell deformation and SOD activity Increased with Increasing concentrations of fluoranthene. The blodegradatlon experiment showed that：（Ⅰ） the rate of physical degradation of fluoranthene was only 5.86%; （Ⅱ） the rate of blodegradatlon of fluoranthene on the 1st and 6th days （l.e. at 24 and 144 h） was approximately 35% and 85%, respectively; and （Ⅲ） the blodegradatlon capability of C. caspla alga towards fluoranthene was high. It is suggested that further Investigations on the toxicity of fluoranthene towards algae, as well as on algal blodegradatlon mechanisms, are of great Importance to use C. caspla as a biological treatment species In an organic wastewater treatment system.

关键词： biodegradation Cyclotella caspia fluoranthene toxicity.

Viscosity and Structure Changes of CaO-SiO_2-Al_2O_3-CaF_2 Melts with Substituting Al_2O_3 for SiO_2

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Journal of Iron and Steel Research International 2016年第7期23卷 633-637页

作者： Guo-hua ZHANG yu-lan ZHEN Kuo-chih CHOU State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

During the smelting process of the high Al steels,the reaction between SiOin molten slag and dissolved aluminum in liquid steel always takes *** aluminathermic reduction reaction will lead to the substitution of 1mol SiOfor 2/3mol ***,the investigations about the influence of the ratio of AlOto SiOon viscosity and structure changes of mould flux during this process are very *** viscosity variation of CaO-SiO-AlO-CaFv2 melts was studied by changing compositions considering the aluminathermic reduction *** was found that viscosity increased monotonously with gradually increasing the substitution *** to the Raman analysis,the substitution of AlOfor SiOleads to the decrease of non-bridging oxygen but the increase of bridging ***,degree of polymerization and viscosity increase as the substitution extent *** comparing the measured viscosities with the model calculated values,it was found that both the recently developed Zhang′s model and Roboud model could describe the viscosity variation behavior of CaO-SiO-AlO-CaFmelts very well.

关键词： high aluminum steel CaO-SiO_2-Al_2O_3-CaF_2 viscosity Raman spectrum mould flux

A dual channel perturbation particle filter algorithm based on GPU acceleration

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Journal of Systems Engineering and Electronics 2018年第4期29卷 854-863页

作者： LI Fan BI Hongkui XIONG Jiajun yu Chenlong lan Xuhui Department of Graduate Air Force Early-warning College Department of Early Warning Intelligence Air Force Early-warning College

The particle filter（PF） algorithm is one of the most commonly used algorithms for maneuvering target tracking. The traditional PF maps from multi-dimensional information to onedimensional information during particle weight calculation, and the incorrect transmission of information leads to the fact that the particle prediction information does not match the weight information, and its essence is the reduction of the information entropy of the useful information. To solve this problem, a dual channel independent filtering method is proposed based on the idea of equalization mapping. Firstly, the particle prediction performance is described by particle manipulations of different dimensions, and the accuracy of particle prediction is improved. The improvement of particle degradation of this algorithm is analyzed in the aspects of particle weight and effective particle number. Secondly, according to the problem of lack of particle samples, the new particles are generated based on the filtering results, and the particle diversity is increased. Finally, the introduction of the graphics processing unit（GPU） parallel computing the platform, the “channel-level” and “particlelevel” parallel computing the program are designed to accelerate the algorithm. The simulation results show that the algorithm has the advantages of better filtering precision, higher particle efficiency and faster calculation speed compared with the traditional algorithm of the CPU platform.

关键词： particle filter (PF) dual channel filtering graphic pro-cessing unit (GPU) parallel operation.

Distributed Nash Equilibrium Seeking Over Random Graphs

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IEEE/CAA Journal of Automatica Sinica 2022年第12期9卷 2193-2196页

作者： Ji Ma Jiayu Qiu Xiao yu Weiyao lan Department of Automation Xiamen Universityand the Key Laboratory of Control and Navigation(Xiamen University)Fujian Province UniversityXiamen 361005China IEEE Department of Automation Xiamen University and the Key Laboratory of Control and Navigation(Xiamen University)Fujian Province UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China

Dear Editor,This letter is concerned with the distributed Nash equilibrium(NE)seeking in an N-player game over random graphs. We develop a distributed stochastic forward-backward(DSFB) algorithm based on local information exchange between agents. We prove that the DSFB algorithm can converge to an NE almost surely, and analyze the convergence rate of the proposed algorithm. Compared with the existing works on distributed NE seeking, the communication graph in this letter is supposed to be time-varying and stochastic, which makes the NE seeking algorithm more suitable for practical scenarios, but brings a great challenge in both the design and convergence analysis of the algorithm. Besides, by establishing a variational inequality on NE, we relax the co-coercivity or strong monotonicity assumption on the extended pseudo-gradient.

关键词： seeking letter stochastic

Effect of sintering process on microstructure and magnetic properties of high frequency power ferrite

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Rare Metals 2006年第z1期25卷 509-514页

作者： SUN Ke lan Zhongwen CHEN Shengming SUN yueming yu Zhong State Key Laboratory of Electronic Thin Films and Integrated Devices UESTCChengdu 610054China Jiangsu Research Center of Magnetic Materials and Devices Engineering and Technology Wuxi 214199China

An oxide ceramic process was adopted to prepare high frequency manganese-zinc(MnZn)power *** combination with the microstructure analysis of material,the influences of sintering process on initial permeability(μ_(i))and high frequency loss in unit volume(P_(cv))of MnZn power ferrite were *** results show that in order to obtain fine microstructure and high frequency properties,the preferable sintering temperature and atmosphere are 1230℃and oxygen partial pressure(P_(O_(2)))of 4%,respectively.

关键词： manganese-zinc ferrite microstructure initial permeability sintering process

Stage Division and Pattern Discovery of Complex Patient Care Processes

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Journal of Systems Science & Complexity 2017年第5期30卷 1136-1159页

作者： WANG Tingyan TIAN Xin yu Ming QI Xin YANG lan Health Care Services Research Center Department of Industrial EngineeringTsinghua UniversityBeijing 100084China Research Center on Fictitious Economy and Data Science Chinese Academy of SciencesBeijing 100190China School of Economics and Management University of Chinese Academy of SciencesBeijing 100190China Health Care Serv-ices Research Center Department of Industrial EngineeringTsinghua UniversityBeijing 100084China

This paper studies the design of a clinical pathway that defines medical service activities within each stage of a patient care process. Much prior research has developed clinicM process models that consider the trajectory of services occurring in a care process, by using data mining techniques on process execution logs. A novel approach that provides a more efficient way of clinical pathway design is introduced in this paper. Based on the strategy of TEI@I methodology, the proposed approach integrates statistical methods, optimization techniques and data mining. With the preprocessed data, a complex care process is subsequently divided into several medical stages, and then the patterns of each stage are identified, and thus a clinical pathway is developed. Finally, the proposed method is applied to the real world, using archival data derived from a hospital in Beijing, about three diseases that involve various departments, with an average of 300 samples for each disease. The results of real- world applications demonstrate that the proposed method can automatically and efficiently facilitate clinical pathways design. The main contributions to the field in this paper include （a） a new application of TEI@I methodology in healthcare domain, （b） a novel method for complex processes analysis, （c） tangible evidence of automatic clinical pathways design in the real world.

关键词： Clinical pathway frequent pattern mining stage division TEI@I virtual business.

Endoscopy-assisted vitrectomy in the anterior vitreous

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International Journal of Ophthalmology(English edition) 2018年第3期11卷 506-511页

作者： Yong-Zhen yu yu-Ping Zou Xiu-lan Zou Department of Ophthalmology Guangzhou General Hospital of Guangzhou Military Command of PLA

Endoscopy-assisted ocular surgery is a relatively old technique that is increasingly being recognized for its application in cases of vitreoretinal disease. This technique is especially useful when both the vitreous and retina are difficult to access because of media opacity, a small pupil, or a microcornea. In this context, the anterior vitreous is often difficult to dissect because of its complex pathological changes. This article reviews the common anatomical features and pathologies that are observed in the anterior vitreous, as well as the applications and indications of endoscopy-assisted vitrectomy in the anterior vitreous.

关键词： intraocular endoscope anterior vitreous endoscopy-assisted vitrectomy