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Hydroxyl carboxylate based non-phosphorus corrosion inhibition process for reclaimed water pipeline and downstream recirculating cooling water system

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Journal of Environmental Sciences 2016年第1期28卷 13-21页

作者： Jun wang Dong wang deyin Hou Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing Key Laboratory of Industrial Wastewater Treatment and Reuse Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Yanshan Branch SINOPEC Beijing Research Institute of Chemical Industry

A combined process was developed to inhibit the corrosion both in the pipeline of reclaimed water supplies（PRWS） and in downstream recirculating cooling water systems（RCWS）using the reclaimed water as makeup. Hydroxyl carboxylate-based corrosion inhibitors（e.g.,gluconate, citrate, tartrate） and zinc sulfate heptahydrate, which provided Zn^2＋ as a synergistic corrosion inhibition additive, were added prior to the PRWS when the phosphate（which could be utilized as a corrosion inhibitor） content in the reclaimed water was below 1.7 mg/L, and no additional corrosion inhibitors were required for the downstream RCWS.Satisfactory corrosion inhibition was achieved even if the RCWS was operated under the condition of high numbers of concentration cycles. The corrosion inhibition requirement was also met by the appropriate combination of PO4^3- and Zn^2＋ when the phosphate content in the reclaimed water was more than 1.7 mg/L. The process integrated not only water reclamation and reuse, and the operation of a highly concentrated RCWS, but also the comprehensive utilization of phosphate in reclaimed water and the application of non-phosphorus corrosion inhibitors. The proposed process reduced the operating cost of the PRWS and the RCWS, and lowered the environmental hazard caused by the excessive discharge of phosphate. Furthermore, larger amounts of water resources could be conserved as a result.

关键词： Hydroxyl carboxylate Reclaimed water Pipeline Corrosion Recirculating cooling water system Non-phosphorus

Dynamic event-triggered finite-time control for multiple Euler-Lagrange systems using integral terminal sliding mode

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Science China(Technological Sciences) 2023年第11期66卷 3164-3173页

作者： wang Yan LI Xiao-Meng YUAN wang YAO deyin LI HongYi Information Technology Research Institute Shenzhen Institute of Information TechnologyShenzhen 518172China School of Automation Guangdong University of TechnologyGuangzhou 510006China

The tracking control for multiple Euler-Lagrange systems with external disturbances in finite time under undirected topology is investigated in this paper.A dynamic model is established for the multi-EL systems to accurately describe the general mechanical system.Furthermore,an integral terminal sliding mode surface is devised to converge the tracking errors of the system state to a neighborhood of zero within finite time,and the designed finite-time controller ensures fast convergence and high steady-state accuracy.To reduce the controller update frequency and network transmission communication load,a dynamic event-triggered mechanism is introduced between the sensor and controller,and no Zeno behavior was observed.Therefore,the Lyapunov stability theory and finite-time stability criterion prove that all signals in the closed-loop system are uniformly ultimately bounded in finite time.Finally,the simulation results verified the effectiveness of the proposed control method.

关键词： dynamic event-triggered mechanism external disturbances finite-time control integral terminal sliding mode control multiple Euler–Lagrange systems

Fabrication of PVDF nanofibrous hydrophobic composite membranes reinforced with fabric substrates via electrospinning for membrane distillation desalination

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Journal of Environmental Sciences 2019年第1期31卷 277-288页

作者： Kuiling Li deyin Hou Chaochen Fu Kai wang Jun wang Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences College of Energy and Environmental Engineering Hebei University of Engineering School of Chemical Engineering and Technology Hebei University of Technology

To improve the mechanical properties of the electrospun nanofibrous membrane, the nonwoven fabrics and spacer fabrics were employed as support substrates to fabricate polyvinylidene fluoride(PVDF) nanofibrous composite membranes. The influences of the substrate on membrane morphology, hydrophobicity, pore size and pore size distribution,porosity, mechanical strength and permeability were comprehensive evaluated. The electrospun composite membranes had a three dimension bead-fiber interconnected open structure and a rough membrane surface. The membrane surface presented a multilevel re-entrant structure and all the water contact angles were above 140°. In contrast with the pure PVDF nanofibrous membrane, the stress at break and the elastic modulus of the composite membranes increased by 4.5–16 times and 17.5–37 times, respectively. Since the spacer fabrics had less resistance to mass transfer, the membranes composited with spacer fabrics exhibited greater permeate fluxes compared with the composite membranes with the nonwoven fabrics as substrates.During the membrane distillation test, the highest permeate flux was up to 49.3 kg/m^2/hr at the feed temperature of 80°C. The long-time and repeat operation of membrane distillation desalination indicated the fabricated membrane with a good resistance to scaling and wetting.The results suggested the potential of the electrospun composite membrane for membrane distillation application.

关键词： Membrane distillation Electrospinning Spacer fabric Polyvinylidene fluoride Mechanical strength

Fabrication and performance of PET mesh enhanced cellulose acetate membranes for forward osmosis

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Journal of Environmental Sciences 2016年第7期28卷 7-17页

作者： Guoliang Li Jun wang deyin Hou Yu Bai Huijuan Liu Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Beijing Key Laboratory of Industrial Wastewater Treatment and Resource Recovery Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Polyethylene terephthalate mesh（PET） enhanced cellulose acetate membranes were fabricated via a phase inversion process. The membrane fabrication parameters that may affect the membrane performance were systematically evaluated including the concentration and temperature of the casting polymer solution and the temperature and time of the evaporation, coagulation and annealing processes. The water permeability and reverse salt flux were measured in forward osmosis（FO） mode for determination of the optimal membrane fabrication conditions. The optimal FO membrane shows a typical asymmetric sandwich structure with a mean thickness of about 148.2 μm. The performance of the optimal FO membrane was tested using 0.2 mol/L Na Cl as the feed solution and 1.5 mol/L glucose as the draw solution. The membrane displayed a water flux of 3.47 L/（m2·hr） and salt rejection of95.48% in FO mode. While in pressure retarded osmosis（PRO） mode, the water flux was4.74 L/（m2·hr） and salt rejection 96.03%. The high ratio of water flux in FO mode to that in PRO mode indicates that the fabricated membrane has a lower degree of internal concentration polarization than comparable membranes.

关键词： Forward osmosis Cellulose acetate Membrane Water flux Reverse salt flux Internal concentration polarization

Innovations and stepwise evolution of CBFs/DREB1s and their regulatory networks in angiosperms

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Journal of Integrative Plant Biology 2022年第11期64卷 2111-2125页

作者： Yuqi Nie Liangyu Guo Fuqiang Cui Yirong Shen Xiaoxue Ye deyin Deng Shuo wang Jianhua Zhu Wenwu Wu State Key Laboratory of Subtropical Silviculture School of Forestry and BiotechnologyZhejiang A&F UniversityHangzhou 311300China Institute of Tropical Biosciences and Biotechnology Chinese Academy of Tropical Agricultural SciencesHaikou 571101China School of Life Sciences Anhui Agricultural UniversityHefei 230036China Department of Plant Science and Landscape Architecture University of MarylandCollege ParkMaryland 20742USA

The C-repeat binding factors/dehydrationresponsive element binding protein 1 s(CBFs/DREB1 s)have been identified as major regulators of cold acclimation in many angiosperm plants.However,their origin and evolutionary process associated to cold responsiveness are still lacking.By integrating multi-omics data of genomes,transcriptomes,and CBFs/DREB1 s genome-wide binding profiles,we unveil the origin and evolution of CBFs/DREB1 s and their regulatory network.Gene collinearity and phylogeny analyses show that CBF/DREB1 is an innovation evolved from tandem duplication-derived DREBⅢgene.A subsequent event of e-whole genome duplication led to two CBF/DREB1 archetypes(CladesⅠandⅡ)in ancient angiosperms.In contrast to cold-insensitivity of Clade I and their parent DREBⅢgenes,CladeⅡevolved a further innovation in cold-sensitive response and was stepwise expanded in eudicots and monocots by independent duplications.In geological time,the duplication events were mainly enriched around the Cretaceous-Paleogene(K-Pg)boundary and/or in the Late Cenozoic Ice Age,when the global average temperature significantly decreased.Consequently,the duplicated CBF/DREB1 genes contributed to the rewiring of CBFs/DREB1 s-regulatory network for cold tolerance.Altogether,our results highlight an origin and convergent evolution of CBFs/DREB1 s and their regulatory network probably for angiosperms adaptation to global cooling.

关键词： CBF/DREB1 cold acclimation global cooling ice age K-Pg boundary paleotemperature tandem duplication(TD) whole genome duplication(WGD)

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三种印尼油砂燃烧特性研究

中国电机工程学报 2012年第26期32卷 23-30,142页

作者：王擎王引贾春霞 deyin Wu 东北电力大学能源与动力工程学院吉林省吉林市132012 印大地集团雅加达印度尼西亚10150

采用热重分析方法研究油砂的燃烧特性。在升温速率分别为10,20,50℃/min条件下,得到了油砂燃烧失重(thermogravimetric,TG)、微商失重(differential thermogravimetric,DTG)曲线。基于TG-DTG曲线,求得了油砂燃烧特性参数,考查了加热速... 详细信息

采用热重分析方法研究油砂的燃烧特性。在升温速率分别为10,20,50℃/min条件下,得到了油砂燃烧失重(thermogravimetric,TG)、微商失重(differential thermogravimetric,DTG)曲线。基于TG-DTG曲线,求得了油砂燃烧特性参数,考查了加热速率、粒径对燃烧特性的影响。采用单个扫描速率法中常用的CR法和多重扫描速率法中FWO法以及DEAM法求解了油砂的燃烧动力学参数,研究结果表明:油砂具有着火容易、着火温度低、燃烧高温段反应比较强烈等燃烧特性。油砂燃烧分为3个阶段:燃烧低温段、过渡段、高温段。这3种模型的拟合度都很高,C-R法结果表明油砂燃烧不同反应阶段可用不同的反应级数来描述;DEAM和FWO法结果能更好地反映油砂燃烧的瞬时性,活化能在燃烧低温段和高温段逐渐增加,活化能在燃烧过渡段变化较为平缓。

关键词：油砂燃烧反应热分析转化率表观活化能

Fluoride removal from brackish groundwater by direct contact membrane distillation

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Journal of Environmental Sciences 2010年第12期22卷 1860-1867页

作者： deyin Hou Jun wang Changwei Zhao Baoqiang wang Zhaokun Luan Xiangcheng Sun State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China School of Chemical and Environmental Engineering China University of Mining and Technology Beijing 100083 China

The direct contact membrane distillation applied for fluoride removal from brackish groundwater was investigated. The self-prepared polyvinylidene fluoride membrane exhibited high rejection of inorganic salt solutes. The maximum permeate flux 35.6 kg/（m^2-hr） was obtained with the feed solution at 80℃ and the cold distillate water at 20℃. The feed concentration had no significant impact on the permeate flux and the rejection in fluoride. The precipitation of CaCO3 would clog the hollow fiber inlets and foul the membrane surface with increasing concentration factor when natural groundwater was used directly as the feed, which resulted in a rapid decline in the module efficiency. This phenomenon was diminished by acidification of the feed. The experimental results showed that the permeate flux and the quality of obtained distillate kept stable before concentration factor reached 5.0 with the acidified groundwater as feed. The membrane module efficiency began to decline gradually when the feed continued to be concentrated, which can be mainly attributed to the formation of CaF2 deposits on the membrane surface. In addition, a 300 hr continuous fluoride removal experiment of acidified groundwater was carried out with concentration factor at 4.0, the permeate flux kept stable and the permeate fluoride was not detected.

关键词： brackish groundwater fluoride removal membrane distillation deposit acidification

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GreyNet灰色文献服务实践及其启示

图书馆建设 2019年第2期 18-23页

作者：王德银安徽宇汇达文化传播有限公司

通过网站调查、邮件咨询与文献分析相结合的方式,对GreyNet历史沿革进行梳理,总结并归纳其成员构成呈现多样性、资金来源由单一向多元延伸拓展、政策制定与出版物管理合理有序、注重对外合作与服务内容深耕、项目研究与国际会议互为推... 详细信息

通过网站调查、邮件咨询与文献分析相结合的方式,对GreyNet历史沿革进行梳理,总结并归纳其成员构成呈现多样性、资金来源由单一向多元延伸拓展、政策制定与出版物管理合理有序、注重对外合作与服务内容深耕、项目研究与国际会议互为推动等特征。我国应借鉴其经验,以政策保障为基础,推动组织机构建立;强化协同合作,扩大开放存取范围;鼓励交流合作,重视总结反思;注重人员综合素质和学术能力的提升,完善灰色文献体系建设。

关键词：图书馆灰色文献网络灰色文献服务

Severe acute respiratory syndrome coronavirus protein 6 mediates ubiquitin-dependent proteosomal degradation of N-Myc(and STAT) interactor

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Virologica Sinica 2015年第2期30卷 153-161页

作者： Weijia Cheng Shiyou Chen Ruiling Li Yu Chen Min wang deyin Guo School of Basic Medical Sciences Wuhan University College of Life Sciences Wuhan University

Severe acute respiratory syndrome coronavirus(SARS-Co V) encodes eight accessory proteins, the functions of which are not yet fully understood. SARS-Co V protein 6(P6) is one of the previously studied accessory proteins that have been documented to enhance viral replication and suppress host interferon(IFN) signaling pathways. Through yeast two-hybrid screening, we identified eight potential cellular P6-interacting proteins from a human spleen c DNA library. For further investigation, we targeted the IFN signaling pathway-mediating protein, N-Myc(and STAT) interactor(Nmi). Its interaction with P6 was confirmed within cells. The results showed that P6 can promote the ubiquitin-dependent proteosomal degradation of Nmi. This study revealed a new mechanism of SARS-Co V P6 in limiting the IFN signaling to promote SARS-Co V survival in host cells.

关键词： severe acute respiratory syndrome coronavirus(SARS-Co V) P6 N-Myc(and STAT) interactor(Nmi) interferon(IFN) signaling pathway ubiquitination proteosomal degradation