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Science Bulletin 2024年第13期69卷 2059-2070页

作者： Chuanliang Wei zhengran wang Peng wang Xinlu Zhang Xuguang An Jinkui Feng Baojuan Xi Shenglin Xiong School of Chemistry and Chemical Engineering School of Materials Science and EngineeringShandong UniversityJinan 250100China School of Mechanical Engineering Chengdu UniversityChengdu 610106China

The practical application of lithium–sulfur(Li–S)batteries is inhibited by the shuttle effect of lithium polysulfides(LiPSs)and slow polysulfide redox kinetics on the S cathode as well as the uncontrollable growth of dendrites on the Li metal ***,both cathode and anode sides must be considered when modifying LiS ***,two-dimensional(2D)ultrathin CoSe_(2)nanobelts are in situ grown on 2D N-doped MXene nanosheets(CoSe_(2)@N-MXene)via one-step solvothermal process for the first *** to its unique 2D/2D structure,CoSe_(2)@N-MXene can be processed to crumpled nanosheets by freeze-drying and flexible and freestanding films by vacuum *** crumpled CoSe_(2)@NMXene nanosheets with abundant active sites and inner spaces can act as S hosts to accelerate polysulfide redox kinetics and suppress the shuttle effect of LiPSs owing to their strong adsorption ability and catalytic conversion effect with ***,the CoSe_(2)@N-MXene film(CoSe_(2)@NMF)can act as a current collector to promote uniform Li deposition because it contains lithiophilic CoSe_(2)and N *** the systematic effect of CoSe_(2)@N-MXene on S cathode and Li metal anode,the electrochemical and safety performance of Li–S batteries are ***_(2)@NMF also shows excellent storage performances in flexible energy storage devices.

关键词： Ultrathin CoSe_(2)nanobelts N-doped MXene nanosheets In situ growth Flexible MXene-based films Li-S batteries

Free-standing Na_(2)C_(6)O_(6)/MXene composite paper for highperformance organic sodium-ion batteries

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Nano Research 2023年第1期16卷 458-465页

作者： zhengran wang Yuchan Zhang Huiyu Jiang Chuanliang Wei Yongling An Liwen Tan Shenglin Xiong Jinkui Feng Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials(Ministry of Education) Research Center for Carbon NanomaterialsSchool of Materials Science and EngineeringShandong UniversityJinan 250061China Shenzhen Institute of Shandong University Shenzhen 518057China

Sodium-ion batteries(SIBs)are regarded as the ideal low-cost choice for next-generation large-scale energy storage ***-based organic salt-disodium rhodizonate(Na_(2)C_(6)O_(6))with high theoretical specific capacity(501 mAh·g−1)is considered as a promising cathode material for ***,the dissolution of active material in electrolyte and low electronic conductivity lead to rapidly capacity decay and poor rate ***,a simple method is designed to construct free-standing and flexible Ti3C2Tx Na2C6O6/MXene paper via vacuum-assisted filtration and antisolvent *** MXene can form an electronic conductive network,adsorb the active materials,and offer additional active sites for Na *** binder-free Na_(2)C_(6)O_(6)/MXene paper delivers excellent electrochemical property with a high rate performance of 231 mAh·g−1 at 1,000 mA·g−1 and a high capacity of 215 mAh·g−1 after 100 *** work provides an attractive strategy for designing high-performance organic electrode materials of SIBs.

关键词： sodium-ion batteries Na_(2)C_(6)O_(6) cathode MXene organic battery flexible free-standing

CgVeA, a light signaling responsive regulator, is involved in regulation of chaetoglobosin A biosynthesis and conidia development in Chaetomium globosum

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Synthetic and Systems Biotechnology 2022年第4期7卷 1084-1094页

作者： zhengran wang Shanshan Zhao Kai Zhang Congyu Lin Xin Ru Qian Yang School of Life Science and Technology Harbin Institute of TechnologyNo.2 Yikuang StreetNangang DistrictHarbin150080People’s Republic of China

Cytochalasans,with diverse structures and pharmacological activities,are a class of compounds containing isoindolinone moieties fused to the tricyclic or tetracyclic ring *** A(cheA),mainly produced by Chaetomium globosum,is the most abundant ***,limited understanding of transcriptional regulation of morphological development and cheA biosynthesis in *** has hindered cheA application in agriculture and biomedical *** study examined the regulatory role of CgVeA gene in *** had significant effect on secondary metabolites production in ***,similar to that reported in other filamentous *** of CgVeA caused an obvious decrease in cheA production from 51.32 to 19.76 mg/L under dark *** contrast,CgVeA overexpression resulted in a dramatic increase in cheA production,reaching 206.59 mg/L under light conditions,which was higher than that noted under dark *** RT-qPCR results confirmed that CgVeA,as a light responsive regulator,positively regulated cheA biosynthesis by controlling the expression of core genes of the cheA biosynthetic gene cluster and other relevant *** mobility shift assays proved that CgVeA directly regulated LaeA,cheR,and p450,and indirectly regulated ***,CgVeA had a significant effect on the regulation of asexual spores *** compared with wild-type ***,CgVeA-silenced and CgVeA overexpression mutants presented remarkable differences in sporulation,irrespective of light or dark ***,CgVeA expression was speculated to negatively regulate spore *** findings illustrated the regulatory mechanism of a hypothetical global regulator,CgVeA,in ***,suggesting its potential application in industrial-scale cheA biosynthesis.

关键词： Chaetoglobosin A CgVeA Chaetomium globosum

Sludge composition and characteristics shaped microbial community and further determined process performance: A study on full-scale thermal hydrolysis-anaerobic digestion processes

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Journal of Environmental Sciences 2024年第3期137卷 96-107页

作者： Wei Liu Chenxiang Sun Wei Li Tianle Li Zhan Chen Jiawei wang zhengran Ren Xianghua Wen School of Environment Tsinghua UniversityBeijing 100084China Jinneng Holding Group DatongShanxi 037000China Research and Development Center Beijing Drainage Group Co.Ltd.Beijing 100124China Beijing Dabeinong Science and Technology Group Co. Ltd.Beijing 100080China

Anaerobic digestion (AD) with thermal hydrolysis (TH) pretreatment is a promising process for excess sludge treatment,while there lacks of the knowledge from full-scale process about the impact of sludge composition and characteristics on microbial community and *** sludge physiochemical indices,microbial community and performance data of four full-scale TH-AD plants were characterized,and their relationships was *** four plants were operated under almost similar total organic loading rate (OLR)but their methanogenesis performance differentiate into two groups,namely superior group(SupG) and the inferior group (Inf G).In both groups,TH effectively solubilized particulate organic compounds,meanwhile raised the ammonia nitrogen (NH_(4)^(+)-N) and volatile fatty acid (VFA) *** with the Sup G,thermal hydrolyzed sludge of Inf G had higher level of VFAs,NH_(4)^(+)-N and total chemical oxygen demand (t COD),which showed higher inhibition effect on microbes,leading to a community with lower diversity,lower abundance of carbohydrate degrading functional guild,higher protein degrading one,and methanogens that adapted to limited substrates,and further declined the methane production ***,it was recommended that OLR alone was not sufficient for controlling the system in design and operation,the concentration of VFAs,NH_(4)^(+)-N and t COD should be equally *** higher concentration,together with the higher abundance of Defluviitoga and Proteiniphilum were recommended as indicators for inferior running *** results proposed that microbial communities played a role of bridge between environmental factors and performance,provided implications for engineering ecology and operational regulation for full-scale sludge TH-AD process.

关键词： Thermal hydrolysis Anaerobic digestion Microbial community Full-scale

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基于多元统计分析的聊城市河流水质评价

济南大学学报（自然科学版） 2023年第1期37卷 17-25页

作者：王正冉王笑峰张明胜温玉强任小花黑龙江大学水利电力学院黑龙江哈尔滨150080 黑龙江省水利科学研究院黑龙江哈尔滨150050 济南大学水利与环境学院山东济南250022

以2016—2018年山东省聊城市4条主要河流16个监测断面的水质数据为基础,采用水质指数法进行水质评价,采用聚类分析和主成分分析识别水质空间异质性及主要影响因素。结果表明:卫运河水质整体状况最好,金堤河和马颊河从上游到下游沿程水... 详细信息

以2016—2018年山东省聊城市4条主要河流16个监测断面的水质数据为基础,采用水质指数法进行水质评价,采用聚类分析和主成分分析识别水质空间异质性及主要影响因素。结果表明:卫运河水质整体状况最好,金堤河和马颊河从上游到下游沿程水质变化较大,仲子庙、任堂桥、李凤桃、王堤口4个监测断面的水质相对较差;16个监测断面可分为5组,水质相对较差的李凤桃、王堤口、仲子庙和任堂桥监测断面均位于聊城市西南部;任堂桥监测断面的主要污染物为氮、磷等营养元素,源自农业活动和畜禽养殖,仲子庙、李凤桃和王堤口监测断面主要污染为有机物,来源于生活污水与工业废水的排放。

关键词：水质评价污染源识别多元统计分析聊城市

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Theoretical study on the mechanism for the excited-state double proton transfer process of an asymmetric Schiff base ligand

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Chinese Physics B 2022年第4期31卷 715-720页

作者：王正然周悄曹必发栗博朱丽霞张星蕾尹航石英 Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China

Excited-state double proton transfer(ESDPT)in the 1-[(2-hydroxy-3-methoxy-benzylidene)-hydrazonomethyl]-naphthalen-2-ol(HYDRAVH_(2))ligand was studied by the density functional theory and time-dependent density functional theory *** analysis of frontier molecular orbitals,infrared spectra,and non-covalent interactions have crossvalidated that the asymmetric structure has an influence on the proton transfer,which makes the proton transfer ability of the two hydrogen protons *** potential energy surfaces in both S_(0)and S_1 states were scanned with varying O-H bond *** results of potential energy surface analysis adequately proved that the HYDRAVH_(2)can undergo the ESDPT process in the S_1 state and the double proton transfer process is a stepwise proton transfer *** work can pave the way towards the design and synthesis of new molecules.

关键词： DFT/TDDFT schiff base ligand excited state intramolecular double proton transfer

“双碳”背景下的水务行业可持续发展前景探析

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净水技术 2023年第10期42卷 1-6,195页

作者：许君清汪正然李光明同济大学环境科学与工程学院上海200092 普瑞法生态环境科技<上海>有限公司上海200092

实现“碳达峰”“碳中和”是推进可持续发展的必然趋势。水务行业作为城市运行的基础保障与支持行业,其低碳转型策略与路径是推进“碳达峰”“碳中和”的关键之一。文章以面向生活用水的典型城市水务行业系统为例,从供水和污水处理两方... 详细信息

实现“碳达峰”“碳中和”是推进可持续发展的必然趋势。水务行业作为城市运行的基础保障与支持行业,其低碳转型策略与路径是推进“碳达峰”“碳中和”的关键之一。文章以面向生活用水的典型城市水务行业系统为例,从供水和污水处理两方面,探讨碳减排可行性与实现路径,从目标设定、技术研发与储备、全生命周期评价等方面,分析水务行业实现“碳中和”的技术创新与管理策略。

关键词：水务行业碳中和碳达峰可持续发展全生命周期

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平板显示产业园区事故雨污水截留设计实例

给水排水 2019年第1期45卷 55-58页

作者：王政然高欣孙志伟北京中瑞电子系统工程设计院有限公司北京100040

通过雨水调蓄池及事故雨污水截留池的组合使用,对成都市某平板显示产业园区进行平时雨水调蓄及事故时雨污水截留。优化设计事故雨污水截留池的平面布置,节省工程造价,缩短施工周期。平时雨污分流接入市政雨污水管道;事故时合流收集,提... 详细信息

通过雨水调蓄池及事故雨污水截留池的组合使用,对成都市某平板显示产业园区进行平时雨水调蓄及事故时雨污水截留。优化设计事故雨污水截留池的平面布置,节省工程造价,缩短施工周期。平时雨污分流接入市政雨污水管道;事故时合流收集,提升至园区事故应急池,由于雨水调蓄池的调蓄作用,有效地减小了雨污水截留池的容积。对比分析在雨污水管道末端设置电动截断阀的方案,可以避免因管道埋深过深导致园区内雨污水无法接入市政雨污水管道,提升安全可靠性。

关键词：平板显示产业雨水调蓄事故雨水事故废水末端截留

热水解对鸡粪和牛粪厌氧消化及重金属风险的影响

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农业工程学报 2024年第4期40卷 254-261页

作者：任征然王佳伟高金华文洋韩军李相昆马培元张含北京城市排水集团有限责任公司科技研发中心北京市污水资源化工程技术研究中心北京100124 河北工业大学土木与交通学院天津300401

为探究热水解预处理对鸡粪和牛粪在厌氧消化过程中产气效率的提升作用以及对消化残渣中重金属形态变化及潜在生态风险的影响。该研究以鸡粪和牛粪为处理对象,采用热水解处理技术,开展了连续中温厌氧消化试验。考察了热水解对畜禽粪污可... 详细信息

为探究热水解预处理对鸡粪和牛粪在厌氧消化过程中产气效率的提升作用以及对消化残渣中重金属形态变化及潜在生态风险的影响。该研究以鸡粪和牛粪为处理对象,采用热水解处理技术,开展了连续中温厌氧消化试验。考察了热水解对畜禽粪污可生化性和重金属迁移风险。该研究还评估了连续施用厌氧消化鸡粪和牛粪15 a后土壤中重金属的积累量和Hakanson潜在生态风险指数。试验发现,鸡粪中木质纤维素含量占干固体总量的25%,牛粪为57.7%。热水解处理能够增强牛粪中木质纤维素的水解,热水解后木质纤维素的降解率为19.2%;但热水解对鸡粪的木质纤维素水解影响不明显,降解率仅为5.3%。鸡粪挥发性固体(volatile solid,VS)产气率为482 L/kg,热水解后产气率提升了12.4%;牛粪产气率为321 L/kg,热水解后产气率提升了31.2%。仅通过热水解不能降低鸡粪中重金属的迁移风险;而经过厌氧消化后,除Hg和Ni外,其他重金属迁移风险均降低到了低风险水平。牛粪经过热水解和厌氧消化处理后重金属向残渣态转换,但迁移风险没有明显改善。连续施用鸡粪和牛粪15 a后,土壤未出现的重金属积累,且15 a内总潜在生态风险等级处于低风险。该研究结果可为鸡粪和牛粪的能源化、无害化处理以及土地利用应用提供了理论依据和数据指导。

关键词：积累迁移风险生物降解性 Hakanson潜在生态风险指数

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钢管脚手架直角扣件刚度的数值模拟分析及试验研究

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土木工程学报 2010年第9期43卷 100-108页

作者：陈志华陆征然王小盾天津大学天津300072

多起脚手架事故引起了大家对直角扣件刚度特性的重视。在钢结构框架理论中梁柱节点刚度分析方法的基础上,结合脚手架规程的修编工作,提出将节点弯矩-转角曲线(M*-θ*)分区的方法对节点刚度判定的准则。研究半刚性连接特性及其临界值判... 详细信息

多起脚手架事故引起了大家对直角扣件刚度特性的重视。在钢结构框架理论中梁柱节点刚度分析方法的基础上,结合脚手架规程的修编工作,提出将节点弯矩-转角曲线(M*-θ*)分区的方法对节点刚度判定的准则。研究半刚性连接特性及其临界值判断标准。提出对扣件新国标(GB 15831—2006)中直角扣件转动刚度测量方法修正后的试验方案。建立扣件的三维有限元模型,对直角扣件的转动刚度进行有限元数值模拟分析和试验研究,得出扣件转动刚度与扣件螺栓拧紧程度两者之间的关系,并对直角扣件的刚度性质进行判定。提出直角扣件刚度调整系数μ,以模拟实际工程中的直角扣件由于多次反复使用及表面磨损等多种因素而产生的转动刚度降低的关键结构特性。所得结果可以更准确地计算直角扣件转动刚度和脚手架承载能力,从而保证脚手架的使用安全。

关键词：脚手架钢管直角扣件刚度半刚性连接