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Frontiers of Environmental Science & Engineering 2024年第5期18卷 1-12页

作者： Jiamin Hu Zhenwen Xie Jiane zuo State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen518055China

It has been confirmed that microplastics(MPs)are present in the *** study simulated secondary PE-MPs via aging and mechanical processes to evaluate their effects on Pak choi(Brassica rapa L.)over 21 *** common pollutants,dichlorodiphenyltrichloroethane(DDT)and naphthalene,were used in the combined toxicity *** results indicated that the growth of Pak choi was significantly inhibited after exposure to secondary PE-MPs,and the combined effects were antagonistic,owing to the adsorption capacity of secondary PE-MPs to DDT and *** stress in Pak choi can be markedly affected,leading to oxidative damage to plant *** moisture content,soil bulk density,soil density,cation exchange capacity(CEC),and FDA hydrolase in the planted soils increased in the treated groups,and the TOC content changed *** also found that the microbial composition of the soil in the DDT and naphthalene groups showed more significant alterations than that in the other *** diversity analysis showed that species diversity increased in the combined groups but indicated a clear downward trend in the single MPs *** study suggests that secondary PE-MPs harm the growth of Pak choi and can change soil properties,revealing the harm to the ecosystem of MPs in the soil.

关键词： Secondary PE-MPs Combined effects Oxidative stress Soil properties Bacterial community

乙烯生产的生命周期评价(Ⅱ)影响评价与结果解释

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化工进展 2006年第4期25卷 432-435页

作者：袁宝荣聂祚仁狄向华左铁镛北京工业大学材料学院新型功能材料教育部重点实验室北京100022

基于乙烯生产的生命周期清单结果,对其进行生命周期影响评价,得到生命周期影响的单一指标评价结果为1.12×10-10/年,并进行了结果解释。乙烯生产的生命周期影响中,不可再生资源消耗占据主要地位,在总负荷中占到的份额达58%。对各污染物... 详细信息

基于乙烯生产的生命周期清单结果,对其进行生命周期影响评价,得到生命周期影响的单一指标评价结果为1.12×10-10/年,并进行了结果解释。乙烯生产的生命周期影响中,不可再生资源消耗占据主要地位,在总负荷中占到的份额达58%。对各污染物的直接排放进行单项影响评价,结果表明生产过程中的乙烯排放和NOx排放是主要问题,其环境负荷在环境排放类总负荷中所占份额均达1/4左右。

关键词：乙烯生命周期影响评价不可再生资源消耗

ZR对铸造MGZN5ND3.5合金组织和性能的影响

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特种铸造及有色合金 2006年第2期26卷 74-76页

作者：张波杜文博吴玉锋苏学宽曹林锋左铁镛北京工业大学

制备了不同ZR含量的MGZN5ND3.5ZRX合金,研究了ZR元素对合金晶粒大小及铸态力学性能的影响。显微组织观察表明,当W(ZR)≤0.8%时,合金晶粒度随ZR含量增加而减小;当W(ZR)>0.8%时,合金晶粒度基本保持不变。力学性能测试表明,ZR元素的添加,... 详细信息

制备了不同ZR含量的MGZN5ND3.5ZRX合金,研究了ZR元素对合金晶粒大小及铸态力学性能的影响。显微组织观察表明,当W(ZR)≤0.8%时,合金晶粒度随ZR含量增加而减小;当W(ZR)>0.8%时,合金晶粒度基本保持不变。力学性能测试表明,ZR元素的添加,使合金铸态下的抗拉强度和伸长率均得到了提高。拉伸断口SEM形貌分析表明,合金断裂方式由准解理断裂向韧性断裂发生转变。

关键词：铸造镁合金 Zr 晶粒细化

La_2O_3-Mo阴极表面碳化层作用机制研究

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金属学报 2000年第11期36卷 1205-1208页

作者：王金淑周美玲张久兴姚草根聂祚仁左铁镛北京工业大学材料学院北京100022

用光电子能谱和Ａｕｇｅｒ电子能谱等分析手段对纯钼丝表面离子注Ｌａ后形成的Ｌａ_２Ｏ_３－Ｍｏ阴极表面碳化层的作用机制进行了研究实验结果表明，碳化层主要起到产生活性物质Ｌａ的作用，此外还具有贮存和输运活性物质的作用．... 详细信息

用光电子能谱和Ａｕｇｅｒ电子能谱等分析手段对纯钼丝表面离子注Ｌａ后形成的Ｌａ_２Ｏ_３－Ｍｏ阴极表面碳化层的作用机制进行了研究实验结果表明，碳化层主要起到产生活性物质Ｌａ的作用，此外还具有贮存和输运活性物质的作用．改变阴极碳化工艺可使Ｌａ_２Ｏ_３－Ｍｏ三极管阴极的寿命由初期的１４ｈ提高到满足实际应用水平（１０００ｈ）的１４３６．５ｈ．

关键词： La2O3-Mo 碳化层阴极碳化离子注入

乙烯生产的生命周期评价(Ⅰ)——目标与范围的确定和清单分析

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化工进展 2006年第3期25卷 334-336页

作者：袁宝荣聂祚仁狄向华左铁镛北京工业大学材料学院新型功能材料教育部重点实验室北京100022

报道了乙烯生产的生命周期清单分析方法,并得到清单的计算结果:单位量乙烯生产相关原煤、原油和天然气的生命周期消耗量分别为85.60kg/t、2302.56kg/t和162.21m3/t,相关CO2、SO2、NOx、CO、乙烯和烟尘的生命周期排放量分别为2257.04kg/t... 详细信息

报道了乙烯生产的生命周期清单分析方法,并得到清单的计算结果:单位量乙烯生产相关原煤、原油和天然气的生命周期消耗量分别为85.60kg/t、2302.56kg/t和162.21m3/t,相关CO2、SO2、NOx、CO、乙烯和烟尘的生命周期排放量分别为2257.04kg/t、8.93kg/t、11.60kg/t、7.62kg/t、2.90kg/t和5.84kg/t。研究结果表明,乙烯、CO、烟尘和NOx生命周期排放的主要来源为乙烯生产的直接排放,CO2的直接排放和间接排放基本相当,SO2的生命周期排放则主要来源于燃料的生产与加工阶段。

关键词：乙烯生命周期清单排放

Optimization Method for Electrical Water Heaters Considering Shifting Potentials of Electricity Consumption and Water-use Activities

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Journal of Modern Power Systems and Clean Energy 2024年第4期12卷 1250-1259页

作者： Yuqing Bao Zhonghui zuo Xuehua Wu School of Electrical and Automation Engineering Nanjing Normal UniversityNanjing 210046China School of Electrical Engineering Nanjing Vocational University of Industry TechnologyNanjing 210023China

Electrical water heaters(EWHs)are important can-didates to provide demand-response *** traditional op-timization method for EWHs focuses on the optimization of the electricity consumption,without considering the shifting poten-tial of the water-use *** paper proposes an optimiza-tion method for EWHs considering the shifting potentials of both the electricity consumption and water-use ***-sidering that the water-use activities could be monolithically shifted,the shifting model of the water-use activities was *** addition to the thermodynamic model of the EWH,the optimal scheduling model of the EWH was developed and solved using mixed-integer linear *** studies were performed on a single EWH and aggregate EWHs,demon-strating that the proposed method can shift the water-use activi-ties and therefore increase the load-shifting potential of the EWHs.

关键词： Electrical water heater(EWH) demand response load-shifting water-use activity

Characterization and normalization factors of abiotic resource depletion for life cycle impact assessment in China

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中国科学:技术科学 2010年第4期 464-464页

作者： GAO Feng ,NIE zuoRen,WANG ZhiHong,GONG XianZheng & zuo tieyong College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China

The availability of resources for economic activities differs between regions,and the importance of the resources is consequently observed to be different within regions compared to a global *** the current situation in Chinese mining industry and its statistic characteristics,the characterization procedures of abiotic resource in life cycle impact assessment(LCIA)have demonstrated certain limitations in the Chinese materials *** aim of this paper is to propose new characterization and normalization factors for abiotic resource depletion categories such as metals and non-renewable energy resources in a Chinese *** actual production of abiotic resources calculated by a modified model is compared to the reserve base in line with the new national standard to determine characterization factors in equivalence units,with antimony as the reference *** normalization factors are based on the total base reserves of the most important minerals in China.A case study on primary magnesium production using the Pidgeon process is used to compare LCIA results for abiotic resource categories that are between current LCIA factors and the new Chinese factors. These factors not only reflect the importance of abiotic resource with respect to region-specific resource depletion,but also can compare with the global factors.

关键词： resource depletion abiotic resource categories life cycle impact assessment (LCIA) magnesium production the Pidgeon process China

Three-dimensional limit variation analysis on the ultimate pullout capacity of the anchor cables based on the Hoek-Brown failure criterion

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Journal of Mountain Science 2024年第3期21卷 1036-1047页

作者： zuo Shi ZHAO Lianheng HU Shihong College of Civil Engineering Changsha UniversityChangsha 410022China Hunan Provincial Key Laboratory for Disaster Prevention and Mitigation of Rail Transit Engineering Structure Key Laboratory of Heavy-Haul Railway Engineering StructureMinistry of EducationCentral South UniversityChangsha 410075China College of Civil Engineering Central South UniversityChangsha 410075China

Only simplified two-dimensional model and a single failure mode are adopted to calculate the ultimate pullout capacity(UPC)of anchor cables in most previous *** study focuses on a more comprehensive combination failure mode that consists of bond failure of an anchorage body and failure of an anchored rock *** three-dimensional ultimate pullout capacity of the anchor cables is calculated based on the Hoek-Brown failure criterion and variation analysis *** numerical solution for the curvilinear function in fracture plane is obtained based on the finite difference theory,which more accurately reflects the failure state of the anchor cable,as opposed to that being assumed in *** results reveal that relying solely on a single failure mode for UPC calculations has limitations,as changes in parameter values not only directly impact the UPC value but also can alter the failure model and thus the calculation method.

关键词： Anchor cable Ultimate pullout capacity(UPC) Failure model Variation analysis Hoek-Brown failure criterion

Navigating the safe operation of high-voltage cathodes:Challenges and strategies

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Nano Research 2024年第10期17卷 8694-8705页

作者： Yue Sun Changjian zuo Yi-Chun Lu Electrochemical Energy and Interfaces Laboratory Department of Mechanical and Automation EngineeringThe Chinese University of Hong KongHong Kong 999077China

Lithium-ion batteries play a crucial role in storing energy for renewable sources and electric vehicles,yet face challenges related to insufficient energy *** the working-voltage of cathodes is promising to boost the energy density of batteries by increasing both the output voltage and capacity of cathode,which however could compromise life cycle and *** review provides a comprehensive summary of essential factors governing pathways of cathode-induced thermal runaway,including electrolyte decomposition,phase transitions,and crosstalk-induced *** and electrolyte modifications aimed at mitigating parasitic reactions and preventing crosstalk were also *** review concludes with insights into the future application of these strategies,providing a comprehensive perspective on the realization of high-energy and safe batteries.

关键词： battery safety high-voltage cathode lithium-ion battery thermal runaway

Study on Emission Stability of Mo-La2O3 Cathode

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Study on Emission Stability of Mo-La2O3 Cathode