检索结果-南通市图书馆

The most influential“Top 10 Events”in carbon neutrality and climate change in 2022

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers in Energy 2023年第1期17卷 1-4页

作者： research institute of carbon neutrality of shanghai jiao tong university research institute of carbon neutrality of shanghai jiao tong university research institute of carbon neutrality Shanghai Jiao Tong UniversityShanghai 200240China

Climate change is a serious challenge facing *** 2022,many influential events occurred around carbon neutrality and addressing climate *** institute of carbon neutrality of shanghai jiao tong university eleborately selected the most influential“Top 10 Events”in carbon neutrality and climate change in 2022 to record the efforts of human society to deal with climate change.

关键词： change. climate change

research ON MEASURING METHOD OF THE THERMALCONDUCTIVITY FOR HIGHLY POROUS MATERIALS

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1997年第3期10卷 213-218页

作者： J Y Wu Z.M. Tang W Shi andR.Z. Wang (institute of Refrigeration and Cryogenics Engineering, shanghai jiao tong university, shanghai 200030,China) shanghai jiaotong Univ Shanghai China

A transient method with rectangular pulse heating has been developed to measure the thermal conductivity of highly porous materials such as activated carbon, zeolite and silica gel. By this method the thermal conductivity can be measured quickly and accu-rately. In this paper, a set of automatically controlled testing equiptnent is *** measuring method is analysed. The thermal conductivities of some samples, such as activated carbon and zeolite, are measured by the equipment. A group of useful data has been obtained.

关键词： thermal conductivity porous material thermophysical property

Electrochemical CO_(2)reduction to C_(2+)products over Cu/Zn intermetallic catalysts synthesized by electrodeposition

在线全文

学校读者我要写书评

暂无评论

Frontiers in Energy 2024年第1期18卷 80-88页

作者： Ting DENG Shuaiqiang JIA Shitao HAN Jianxin ZHAI Jiapeng jiao Xiao CHEN Cheng XUE Xueqing XING Wei XIA Haihong WU Mingyuan HE Buxing HAN School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200062China institute of Eco-Chongming Shanghai 202162China institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China institute of Chemistry Chinese Academy of SciencesBeijing 100190China

Electrocatalytic CO_(2)reduction(ECR)offers an attractive approach to realizing carbon neutrality and producing valuable chemicals and fuels using CO_(2)as the ***,the lack of cost-effective electrocatalysts with better performances has seriously hindered its ***,a one-step co-electrodeposition method was used to introduce Zn,a metal with weak^(*)CO binding energy,into Cu to form Cu/Zn intermetallic catalysts(Cu/Zn IMCs).It was shown that,using an H-cell,the high Faradaic efficiency of C_(2+)hydrocarbons/alcohols()could be achieved in ECR by adjusting the surface metal components and the applied *** suitable conditions,FEC_(2+)and current density could be as high as 75%and 40 mA/cm^(2),*** with the Cu catalyst,the Cu/Zn IMCs have a lower interfacial charge transfer resistance and a larger electrochemically active surface area(ECSA),which accelerate the ***,the^(*)CO formed on Zn sites can move to Cu sites due to its weak binding with*CO,and thus enhance the C–C coupling on the Cu surface to form C_(2+)products.

关键词： carbon dioxide electroreduction electrochemistry co-electrodeposition intermetallic catalysts value-added chemicals

Effect of Solute Drag and Precipitate Pinning on Austenite Grain Growth in Ti-Nb Microalloyed Steels

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel research International 2011年第S1期18卷 383-387页

作者： FU Li-ming 1,WANG Huan-rong 2,WANG Wei 2,SHAN Ai-dang 1 (1.School of Materials Science and Engineering,shanghai jiaotong university,shanghai 200240,China 2.Department of Structural Steels,Baosteel research institute,shanghai 201900,China) shanghai jiao tong Univ Sch Mat Sci & Engn Shanghai 200240 Peoples R China Baosteel Res Inst Dept Struct Steels Shanghai 201900 Peoples R China

A metallurgical model concerning the co-effect of the Nb solute drag and the complex carbonitride precipitates pinning is proposed to predict the recrystallization austenite grain growth of low carbon Nb-containing microalloyed *** analysis,both predicted and experimental,reveals the precipitate pinning plays a dominate role in suppressing the austenite grain growth with less Nb solute drag effect in high temperature region whereas the Nb solute drag predominates in relatively low temperature region.A factor p is suggested to assess the effectiveness of drag and *** pinning and the drag are more effective in restraining grain growth as p>0 and pcarbon Nb microalloyed steel and a kind of Ti-modified low carbon Nb steel by Ti substituting for part of Nb are employed to validate the modeling *** theoretical calculations show a good agreement with experimental results.

关键词： grain growth precipitates pinning solute drag Ti-Nb microalloyed steels

Interaction Between carbon Nanotube and Mg Surface: ab-initio Investigation

在线全文

学校读者我要写书评

暂无评论

Interaction Between Carbon Nanotube and Mg Surface: ab-initi...

Second International Conference on Magnesium(ICM 2006)

作者： Jianfeng Wan, Yanqiong Fei, Jiannong Wang School of Materials Science and Engineering, shanghai jiao tong university, Huashan Road 1954, shanghai 200030,China research institute of Robotics, shanghai jiao tong university, Muashan Road 1954, shanghai 200030,China

ab-initio calculations on the interaction between the single-walled carbon nanotube (SWCN) and the Mg (0001) surface have been reported. It was found that the charge transfer from metal surfaces to the nanotubes takes place depending on both the electronic structures of the nanotubes and the work functions of the metal surfaces. The stable geometries for the nanotube between two consecutive objectives with C-Mg chemical bonds formed. The interaction energy in the most stable geometry is found to be CNT's structural dependence. Concerning the electronic properties, the most stable structure showed a decrease in the density of states near the Fermi level due to the formation of C-Mg bonds enhancing the metallic character of the nanotube by the contact with the surface. The nature of the nanotube-interface interaction for nanotubes of larger diameters has been also discussed based on the calculated bond order.

关键词： Ab-initio carbon nanotube Magnesium Electronic structure Interface

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

碳质吸附剂吸附储氢的研究现状

太阳能学报 2003年第1期24卷 121-128页

作者：张超顾安忠上海交通大学低温与制冷研究所上海200030

论述了活性炭、碳纳米纤维、碳纳米管吸附储氢的研究历程 ,从实验、理论研究两个方面总结了前人的研究成果 :活性炭在低温下有好的吸附储氢特性 ,但在室温条件下的结果却不令人满意 ;碳纳米管和碳纳米纤维的实验结果令人振奋 ,但众多的... 详细信息

论述了活性炭、碳纳米纤维、碳纳米管吸附储氢的研究历程 ,从实验、理论研究两个方面总结了前人的研究成果 :活性炭在低温下有好的吸附储氢特性 ,但在室温条件下的结果却不令人满意 ;碳纳米管和碳纳米纤维的实验结果令人振奋 ,但众多的实验结果并不一致 ;碳纳米材料的制备技术和净化技术还仅处在实验规模的阶段 ;蒙特卡罗、密度泛函等方法是常用的计算机模拟技术 ,但目前它们只是考虑了理想的物理模型 ,没有考虑碳纳米管表面的一些不规则现象 ;

关键词：储氢活性碳碳纳米纤维碳纳米管

基于SiteWise^(TM)工具的污染场地修复环境足迹分析

在线全文

学校读者我要写书评

暂无评论

中国环境科学 2024年第1期44卷 278-287页

作者：肖萌刘瑞平李香兰张红振徐铁兵佟雪娇贾御夫北京师范大学地理科学学部北京100875 生态环境部环境规划院北京100012 河北省生态环境科学研究院河北石家庄050037 煜环环境科技有限公司河北石家庄050000

采用SiteWise^(TM)工具对河北某化肥生产污染土壤修复全过程进行了温室气体排放、能源消耗、水资源和电力资源消耗、空气污染物排放等环境足迹的系统定量评估.结果显示,修复21800m^(3)受污染土壤,共排放温室气体2616t CO_(2)-eq,消耗能... 详细信息

采用SiteWise^(TM)工具对河北某化肥生产污染土壤修复全过程进行了温室气体排放、能源消耗、水资源和电力资源消耗、空气污染物排放等环境足迹的系统定量评估.结果显示,修复21800m^(3)受污染土壤,共排放温室气体2616t CO_(2)-eq,消耗能源2.11×10^(14)MJ,水资源1.1×10^(5)L,电力资源5.66×10^(4)kW⋅h,排放空气污染物1.58×10^(4)kg.采用SiteWise^(TM)工具自带的可再生能源情景分析发现,将可再生能源纳入修复系统,相对降碳1%时修复成本增加7.58%.不确定性分析结果表明,在95%置信区间内,温室气体排放量为2194~3086t CO_(2)-eq,能源消耗量为1.45×10^(14)~2.46×10^(14)MJ,整体不确定性程度较低.

关键词：常温解析化学氧化有机污染温室气体碳中和

research on the dissolution behavior of cementite in the GCr15 steel surface layer induced by surface nanocrystallization

在线全文

学校读者我要写书评

暂无评论

Baosteel Technical research 2010年第4期4卷 8-12页

作者： ZHANG Junbao1),WANG Aixiang1,2)and ZHANG Yujun1)1)Advanced Technology Division,research institute,Baoshan Iron & Steel Co.,Ltd.,shanghai 201900,China2)School of Materials Science & Engineering,shanghai jiao tong university,shanghai 200030,China Advanced Technology Division Research Institute Baoshan Iron & Steel Co. Ltd. Shanghai 201900 China Advanced Technology Division Research Institute Baoshan Iron & Steel Co. Ltd. Shanghai 201900 China School of Materials Science & Engineering Shanghai Jiao Tong University Shanghai 200030 China

Dissolution of cementite was found in the surface layer of 1.0C-1.5Cr steel plates during the process of surface mechanical attrition treatment(SMAT),and its evolution was characterized by transmission electron microscope(TEM),three-dimensional atom probe(3DAP)and Mssbauer *** average grain size contained in the top surface of SMAT specimen was 10nm,and no diffraction ring corresponding to cementite grain was identified in the selected area election diffraction(SAED)pattern,which indicated the disappearance of cementite.3DAP analysis showed the average carbon concentration in ferrite(0.75 at%)after SMAT,which was almost 100 times higher than that in matrix(0.008 at%),which suggested cementite dissolve in the process of *** results of Mssbauer spectroscopy indicated that partial cementite dissolved in the process of SMAT,the saturation of cementite dissolution is about 47%.Evolution of cementite involved three sub-stages:①inoculation stage,in the first 5 min of treated duration,cementite fraction is reduced only by 0.4%;②dissolution stage,within the following 25 min cementite fraction significantly is reduced from 14.6% to 8.4%;③saturation stage,when treatment exceeds 30 min,the fraction of cementite nearly remains the same.

关键词： dissolution of cementite Mssbauer spectroscopy SMAT 3DAP surface nanocrystallization

数字化能源管理系统促进工业界节能减碳的分析与建议

在线全文

学校读者我要写书评

暂无评论

中国科学院院刊 2024年第2期39卷 311-322页

作者：耿端阳许通朱庆华 Steve EVANS 英国剑桥大学工程系制造研究所剑桥CB30FS 英国剑桥大学土地经济系环境能源与自然资源管理中心剑桥CB33QZ 上海交通大学安泰经济与管理学院上海200030

工业生产是碳排放的主要来源。减少能源浪费、达成生产节能对实现我国“双碳”目标至关重要。随着数字化技术进步,数字化能源管理系统可通过将不可见的能源可视化,促进企业节能。文章分析了英国、美国、德国、日本和瑞典应用能源管理系... 详细信息

工业生产是碳排放的主要来源。减少能源浪费、达成生产节能对实现我国“双碳”目标至关重要。随着数字化技术进步,数字化能源管理系统可通过将不可见的能源可视化,促进企业节能。文章分析了英国、美国、德国、日本和瑞典应用能源管理系统的现状,总结了其特点与应用条件,与我国在此方面的发展进行了对比,并探讨了我国在部署能源管理系统过程中所面临的挑战。文章还提出从“工厂、产线和设备”到“产品”角度分析能耗,构建“基于生产步骤的单位产品能耗标签”的方法论框架。探讨了政府、企业等利益相关者在该方法论中的角色,并提出了政府支持发展数字化能源管理系统的对策,包括推动系统建设、支持合作、确定能耗基准和引导企业对标行业最优实践。

关键词：数字化技术能源浪费能源管理能源系统碳中和

维普期刊数据库博看期刊