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Improved rhizoremediation for decabromodiphenyl ether(BDE-209)in E-waste contaminated soils

Soil Ecology Letters 2019年第3期1卷 157-173页

作者： Jiayin Feng Xinquan Shen Jian chen Jiachun Shi Jianming Xu caixian Tang philip c.brookes Yan He Institute of Soil and Water Resources and Environmental Science College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Hangzhou 310058China Farmland Quality and Fertilizer Management Station of Wenling Zhejiang ProvinceWenling 317500China Department of Animal Plant and Soil SciencesLa Trobe UniversityBundooraVictoria 3086Australia

An experiment was conducted to improve rhizoremediation for decabromodiphenyl ether(BDE-209)contaminated soil from typical E-waste dismantling *** of ryegrass(Lolium perenne L.)and rice(Oryza sativa L.)were cultivated in aged-contaminated(initial concentration of 346.3μg BDE-209·kg^(-1))and freshly-spiked(initial concentration of 3127μg BDE-209·kg^(-1))soils,coupling with the agricultural modification strategies of compost addition and/or arbuscular mycorrhizal fungi(AMF)infection,respectively.60 days’growth of ryegrass significantly facilitated the dissipation of BDE-209,with the most effective in its rhizosphere in treatment inoculated with AMF;the BDE-209 dissipation rates achieved 51.9% and 22.8% in rhizosphere,and 43.5% and 19.8% in non-rhizosphere,for aged-contaminated and freshlyspiked soils,respectively.120 days’growth of rice with simultaneous inoculation of AMF and addition of compost was the most effective in facilitating BDE-209 dissipation in agedcontaminated soil,with the removal rates of 53.3% and 48.1% in rhizosphere and nonrhizosphere soils respectively;while for freshly-spiked soils,the most effective removal was achieved by compost addition only,with the BDE-209 dissipation rates of 27.9% and 26.6% in rhizosphere and non-rhizosphere soils,*** throughput sequencing analysis of rhizosphere soil DNA showed that responses in microbial communities and their structure differed with plant species,soil pollution dose,AMF inoculation and/or compost ***,Xanthomonadales,Burkholderiales,Sphingomonadales,clostridiales,cytophagales,Gemmatimonadales and Saprospirales were the sensitive responders and even possibly potential functional microbial groups during the facilitated removal of BDE-209 in *** study illustrates an effective rhizoremediation pattern for removal of BDE-209 in pollution soils,through successive cultivation of rice and followed by ryegrass,with rice growth coupled with AMF inoculation and comp

关键词： Decabromodiphenyl ether(BDE-209) Rhizoremediation Ryegrass Rice compost Arbuscular mycorrhizal fungi

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Dynamic changes in soil chemical properties and microbial community structure in response to different nitrogen fertilizers in an acidified celery soil

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Soil Ecology Letters 2019年第3期1卷 105-113页

作者： Yuping Wu Jiangxing Wu Yongjun Ma Ying Lian Hui Sun Danchao Xie Yaying Li philip c.brookes Huaiying Yao Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Ningbo Agriculture Bureau Ningbo 315012China Ningbo Institute of Standardization Ningbo 315040China Ningbo Urban Environment Observation and Research Station Chinese Academic SciencesNingbo 315830China college of Environmental and Natural Resource Sciences Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant NutritionZhejiang UniversityHangzhou 310058China

To determine the effects of different kinds of nitrogen fertilizer,especially high-efficiency slowrelease fertilizers,on soil pH,nitrogen(N)and microbial community structures in an acidic celery soil,four treatments(cK,no N fertilizer;NR,urea;PE,calcium cyanamide fertilizer;and SK,controlled-release N fertilizer)were applied,and soil pH,total soil N,inorganic N,and soil microbial biomass c were *** fatty acids(PLFAs)were extracted and detected using the MIDI Sherlock microbial identification *** PE treatment significantly improved soil pH,from 4.80 to>6.00,during the whole growth period of the celery,and resulted in the highest celery yield among the four *** 14 d application of calcium cyanamide,the soil nitrate content significantly decreased,but the ammonium content significantly *** PE treatment also significantly increased soil microbial biomass c during the whole celery growth *** variate analysis of the PLFA data indicated that the soil microbial community structure in the cK treatment was significantly different from those in the N applied treatments after 49 d ***,there was a significant difference(Pcrobial community structure between the PE treatment and the other three treatments at the end of the *** cyanamide is a good choice for farmers to use on acidic celery land because it supplies sufficient N,and increases soil pH,microbial biomass and the yield of celery.

关键词： Acidified calcium cyanamide celery Phospholipid fatty acid Soil nitrogen

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changes in profile distribution and chemical properties of natural nanoparticles in paddy soils as affected by long-term rice cultivation

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Pedosphere 2021年第5期31卷 659-669页

作者： Dan HUANG Xinyu ZHU Baile XU Yan HE Mingkui ZHANG Fei LIU Zhenghua LIAN Randy ADAHLGREN philip cbrookes Jianming XU Institute of Soil and Water Resources and Environmental Science College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058(China) Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Hangzhou 310058(China) Department of Land Air and Water ResourcesUniversity of California-DavisDavis CA 95616(USA)

Systematic studies on the genesis,properties,and distribution of natural nanoparticles(NNPs)in soil remain *** study examined a soil chronosequence of continuous paddy field land use for periods ranging from 0 to 1000 years to determine how NNPs in soil changed at the early stages of soil genesis in eastern *** samples were collected from coastal reclaimed paddy fields that were cultivated for 0,50,100,300,700,and 1000 *** nanoparticles were isolated and characterized along with bulk soil samples(ction)for selected physical and chemical *** NNP content increased with increasing soil cultivation age at 60 g m^(-2) year-1,which was related to decreasing soil electrical conductivity(172-1297μS cm^(-1))and NNP zeta potentials(from -22 to -36 mV)with increasing soil cultivation *** in several NNP properties,such as pedogenic iron oxide and total organic carbon contents,were consistent with those of the bulk soils across the soil ***,changes in NNP iron oxide content were obvious and illustrated active chemical weathering,pedogenesis,and potential impacts on the microbial *** analysis demonstrated that the soil cultivation age was the most important factor affecting NNP properties,contributing 60.7% of the total *** and principal component analysis(PcA)revealed splitting of NNP samples into age groups of 50-300 and 700-1000 years,indicating rapid evolution of NNP properties,after an initial period of desalinization(approximately 50 years).Overall,this study provides new insights into NNP evolution in soil during pedogenesis and predicting their influences on agriculture and ecological risks over millennial-scale rice cultivation.

关键词： natural nanoparticle evolution soil chronosequence soil cultivation age soil genesis soil nanoparticles

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AM真菌菌丝对PcBs污染土壤的修复机理研究

AM真菌菌丝对PCBs污染土壤的修复机理研究

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第八次全国土壤生物与生物化学学术研讨会暨第三次全国土壤健康学术研讨会

作者：秦华 philip c.brookes 冯有智徐建明浙江大学环境与资源学院浙江农林大学环境与资源学院中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室南京土壤研究所-香港浸会大学土壤与环境联合开放实验室

AM真菌可以通过菌根际效应(受AM真菌侵染根系及菌丝影响的土体)影响土壤细菌群落结构,从而影响多氯联苯(Polychlorinated biphenyls,PcBs)降解,故在有机污染土壤的根际修复中发挥了重要作用。目前还没有关于AM真菌根外菌丝影响土壤微生... 详细信息

AM真菌可以通过菌根际效应(受AM真菌侵染根系及菌丝影响的土体)影响土壤细菌群落结构,从而影响多氯联苯(Polychlorinated biphenyls,PcBs)降解,故在有机污染土壤的根际修复中发挥了重要作用。目前还没有关于AM真菌根外菌丝影响土壤微生物群落结构、从而影响PcBs降解的相关报道。本研究中以人为添加Aroclor1242的污染土壤为供试土壤,美国南瓜(cucurbita pepo)为供试植物,研究Glomus mosseae菌丝对土壤微生物群落结构以及PcBs同系物降解的影响。培养试验采用分室根箱系统,从中央隔网开始在水平方向上将土壤分为四个土层,以研究AM真菌菌丝对土壤微生物群落及PcBs降解的数量效应。研究结果表明,接种AM真菌的处理其菌丝室土壤PcBs降解率从最外层的35.67%到最内层的57.39%,均显著高于未接种的对照(17.31%)。三氯联苯、四氯联苯以及土壤总PcBs降解率与土壤菌丝长度呈显著相关。土壤中Rhodococcus属bphc基因丰度比Pseudomonas属bphc基因高2-3个数量级,且也与菌丝长度显著正相关。高通量测序结果表明,AM真菌菌丝改变了土壤微生物群落结构。Betaproteobacteria和Actinobacteria门细菌在群落中占据主要地位,而Burkholderials和Actinomycetales是主要的科。comamonadaceae与菌丝长度及三氯联苯降解率呈显著正相关,而Oxalobacteraceae和Streptomycetaceae正好相反。结果证明了AM真菌菌丝本身可以通过改变土壤微生物群落,进而影响土壤PcBs的降解。

关键词：多氯联苯丛枝菌根真菌分室根箱系统高通量测序微生物群落

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Liver transplantation as an alternative for the treatment of neuroendocrine liver metastasis: Appraisal of the current evidence

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Hepatobiliary & Pancreatic Diseases International 2024年第2期23卷 146-153页

作者： philip c.Muller Matthias Pfister Dilmurodjon Eshmuminov Kuno Lehmann Department of Surgery and Transplantation University Hospital ZurichRämistrasse 100Zurich CH-8091Switzerland

Background:Liver transplantation(LT)for neuroendocrine liver metastases(NELM)is still in *** comparing LT with liver resection(LR)for NELM are scarce,as patient selection is heterogeneous and experience is *** goal of this review was to provide a critical analysis of the evidence on LT versus LR in the treatment of *** sources:A scoping literature search on LT and LR for NELM was performed with PubMed,including English articles up to March ***:International guidelines recommend LR for NELM in resectable,well-differentiated tumors in the absence of extrahepatic metastatic disease with superior results of LR compared to systemic or liver-directed *** liver surgery has extended resectability criteria whilst entailing increased perioperative risk and short disease-free *** highly selected patients(based on the Milan criteria)with unresectable NELM,oncologic results of LT are *** factors include tumor biology(G1/G2)and burden,waiting time for LT,patient age and extrahepatic *** on low-level evi-dence,LT for low-grade NELM within the Milan criteria resulted in improved disease-free survival and overall survival compared to *** benefits of LT were lost in patients beyond the Milan ***:With adherence to strict selection criteria especially tumor biology,LT for NELM is becoming a valuable option providing oncologic benefits compared to *** evidence suggests even stricter selection criteria with regard to tumor biology.

关键词： Liver transplantation Neuroendocrine liver metastases Liver resection Selection criteria Tumor biology

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Dynamic Event-Triggered consensus control for Input constrained Multi-Agent Systems With a Designable Minimum Inter-Event Time

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IEEE/cAA Journal of Automatica Sinica 2024年第3期11卷 649-660页

作者： Meilin Li Yue Long Tieshan Li Hongjing Liang c.L.philip chen the School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China IEEE the Yangtze Delta Region Institute University of Electronic Science and Technology of ChinaHuzhou 313000 the Laboratory of Electromagnetic Space cognition and Intelligent control Beijing 100089China the School of computer Science and Engineering South China University of TechnologyGuangzhou 510006

This paper investigates the consensus control of multi-agent systems(MASs) with constrained input using the dynamic event-triggered mechanism(ETM).consider the MASs with small-scale networks where a centralized dynamic ETM with global information of the MASs is first ***,a distributed dynamic ETM which only uses local information is developed for the MASs with large-scale *** is shown that the semi-global consensus of the MASs can be achieved by the designed bounded control protocol where the Zeno phenomenon is eliminated by a designable minimum inter-event *** addition,it is easier to find a trade-off between the convergence rate and the minimum inter-event time by an adjustable ***,the results are extended to regional consensus of the MASs with the bounded control *** simulations show the effectiveness of the proposed approach.

关键词： constrained input designable minimum inter-event time directed communication topology dynamic event-triggered mechanism MASs consensus control

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Adaptive neural network control of a 2-DOF helicopter system considering input constraints and global prescribed performance

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Science china(Information Sciences) 2024年第7期67卷 224-239页

作者： Zhijia ZHAO Jiale WU Zhijie LIU We HE c.L.philip cHEN School of Mechanical and Electrical Engineering Guangzhou University School of Intelligence Science and Technology and Key Laboratory of Intelligent Bionic Unmanned Systems of Ministry of Education University of Science and Technology Beijing School of computer Science and Engineering South China University of Technology Pazhou Lab

In this study, an adaptive neural network(NN) control is proposed for nonlinear two-degree-offreedom(2-DOF) helicopter systems considering the input constraints and global prescribed ***, radial basis function NN(RBFNN) is employed to estimate the unknown dynamics of the helicopter system. Second, a smooth nonaffine function is exploited to approximate and address nonlinear constraint functions. Subsequently, a new prescribed function is proposed, and an original constrained error is transformed into an equivalent unconstrained error using the error transformation and barrier function transformation methods. The analysis of the established Lyapunov function proves that the controlled system is globally uniformly bounded. Finally, the simulation and experimental results on a constructed Quanser's test platform verify the rationality and feasibility of the proposed control.

关键词： adaptive NN control 2-DOF helicopter global prescribed performance input constraints

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Boosting Adaptive Weighted Broad Learning System for Multi-Label Learning

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IEEE/cAA Journal of Automatica Sinica 2024年第11期11卷 2204-2219页

作者： Yuanxin Lin Zhiwen Yu Kaixiang Yang Ziwei Fan c.L.philip chen the School of computer Science and Engineering in South china University of Technology IEEE the Pengcheng Laboratory

Multi-label classification is a challenging problem that has attracted significant attention from researchers, particularly in the domain of image and text attribute annotation. However, multi-label datasets are prone to serious intra-class and inter-class imbalance problems, which can significantly degrade the classification performance. To address the above issues, we propose the multi-label weighted broad learning system(MLW-BLS) from the perspective of label imbalance weighting and label correlation mining. Further, we propose the multi-label adaptive weighted broad learning system(MLAW-BLS) to adaptively adjust the specific weights and values of labels of MLW-BLS and construct an efficient imbalanced classifier set. Extensive experiments are conducted on various datasets to evaluate the effectiveness of the proposed model, and the results demonstrate its superiority over other advanced approaches.

关键词： Broad learning system label correlation mining label imbalance weighting multi-label imbalance

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A Practical Predefined-Time Stability criterion and Its Application to Uncertain Nonlinear Systems

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Journal of Systems Science & complexity 2024年

作者： XU Hao YU Dengxiu SUI Shuai XU Bowen cHEN c.L.philip Unmanned System Research Institute Northwestern Polytechnical University college of Science Liaoning University of Technology School of Artificial Intelligence Optics and Electronics Northwestern Polytechnical University School of computer Science and Engineering South China University of Technology and Pazhou Lab

In this paper, the singularity-free predefined-time fuzzy adaptive tracking control problem is studied for non-strict feedback(NSF) nonlinear systems considering mismatched external disturbances. An innovative practical predefined-time stability(PPTS) criterion is proposed to provide the theoretical basis for subsequent control design. compared to the existing predefined-time stability(PTS) criterion, this criterion has a broader application range and can solve the control design issues of nonlinear systems with system uncertainties. Fuzzy logic systems(FLSs) are employed to identify unknown nonlinear functions. Based on the backstepping control technology, a singularity-free predefined-time control(PTc) design method is proposed, in which the hyperbolic tangent function is utilized to avoid the singular problem, and the nature of fuzzy basis function is adopted to resolve the algebraic loop problem. The PPTS of the closed-loop NSF nonlinear system is proven with the Lyapunov theory and the proposed PPTS criterion. Ultimately, the efficiency of the presented PTc design method is verified by several sets of simulations on a single link manipulator system.

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“差异化最优”和“纵向一体化”理论对中国的意义

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开放时代 2024年第1期 162-173,M0008页

作者：黄宗智中国人民大学法学院历史与社会高等研究所美国加利福尼亚大学洛杉矶校区历史系(荣休)

除了关于小农户作为一个既是生产也是消费的经济单位而形成的诸多特点的理论论析之外,恰亚诺夫的另外两大理论贡献,一是说明小农经济生产遵循的不是简单的规模经济效益,而是“差异化最优”的逻辑,二是提出小农户为了应对大市场,需要扎... 详细信息

除了关于小农户作为一个既是生产也是消费的经济单位而形成的诸多特点的理论论析之外,恰亚诺夫的另外两大理论贡献,一是说明小农经济生产遵循的不是简单的规模经济效益,而是“差异化最优”的逻辑,二是提出小农户为了应对大市场,需要扎根于小农户自身组织的“纵向一体化”的合作社来维护其生产收益。前者可以充分见证于中国近几十年来的“新农业革命”,后者则特别清晰地展示于“东亚地区”(主要指日本、韩国及中国台湾地区)1945年以来非常突出的小农经济现代化经验。近二十年的中央一号文件充分见证了国家农政的重点之前在模仿美国模式和简单的规模经济效益理论,但在2018年以来则转向以小农经济为生产主体和以小农社区为合作社主体的新趋向,既见证也推进和有选择性地改组了上述恰亚诺夫的两大理论洞见。

关键词：小农户 “东亚模式” 小农社区合作社新型物流体系前瞻设想

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