检索结果-南通市图书馆

Novel coprecipitation-oxidation method for recovering iron from steel waste pickling liquor

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2017年第1期11卷 89-98页

作者： Shejiang Liu Hongyang Yang Yongkui Yang yupeng Guo Yun Qi School of Environmental Science & Engineering Tianjin University Tianjin 300072 China

Waste pickling liquors （WPLs） containing high concentrations of iron and acid are hazardous waste products from the steel pickling processes. A novel combined coprecipitation-oxidation method for iron recovery by Fe304 nanoparhcle＇ production from the WPLs was developed in this study. 2＋All oxidation-reduction potential monitoring method was developed for real-time control of the Fe2＋/Fe3＋ molar ratio. The key coprecipitation-oxidation parameters were determined using the orthogonal experimental design method. The use of promoters greatly improved the Fe3O4 nanoparticle crystallinity, size, magnetization, and dispersion. x-ray diffraction patterns showed that the produced Fe3O4. nanoparticles were single phase. The Fe3O4 nan oparticles were approximately spherical and slightly aggtomerated. Vibrating sample magnetometry showed that the Fe3O4 nanopahicles produced from the WPLs had good magnetic properties, with a saturation magnetization of 80.206 emu. g-1 and a remanence of 10.500 emu. g-1. The results show that this novel coprecipitation-oxidation method has great potential for recycling iron in WPLs.

关键词： Waste pickling liquor Coprecipitation-oxidation Fe3O4 nanoparticles Oxidation-reduction potential Promoter

Determination of the number ofψ(3686)events taken at BESⅢ

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

Chinese Physics C 2024年第9期48卷 8-20页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis x.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai x.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen H.Y.Chen M.L.Chen S.J.Chen S.L.Chen S.M.Chen T.Chen x.R.Chen x.T.Chen Y.B.Chen Y.Q.Chen Z.J.Chen Z.Y.Chen S.K.Choi G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Ding x.x.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong x.Dong M.C.Du S.x.Du Y.Y.Duan Z.H.Duan P.Egorov Y.H.Fan J.Fang J.Fang S.S.Fang W.x.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.T.Feng M.Fritsch C.D.Fu J.L.Fu Y.W.Fu H.Gao x.B.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia L.Ge P.T.Ge Z.W.Ge C.Geng E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.x.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.Han T.T.Han F.Hanisch x.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold T.Holtmann P.C.Hong G.Y.Hou x.T.Hou Y.R.Hou Z.L.Hou B.Y.Hu H.M.Hu J.F.Hu S.L.Hu T.Hu Y.Hu G.S.Huang K.x.Huang L.Q.Huang x.T.Huang Y.P.Huang T.Hussain F.Hölzken N.Hüsken N.in der Wiesche J.Jackson S.Janchiv J.H.Jeong Q.Ji Q.P.Ji W.Ji x.B.Ji x.L.Ji Y.Y.Ji x.Q.Jia Z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang x.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing x.M.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki x.L.Kang x.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner x.Kui N.Kumar A.Kupsc W.Kühn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.H.Lei M.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.B.Li H.J.Li H.N.Li Hui Li J.R.Li J.S.Li Ke Li L.J.Li L.K.Li Lei Li M.H.Li P.R.Li Q.M.Li Q.x.Li R.Li S.x.Li T.Li W.D.Li W.G.Li x.Li x.H.Li x.L.Li x.Z.Li xi Institute of High Energy Physics Beijing 100049China Beihang university Beijing 100191China Bochum Ruhr-university D-44780BochumGermany Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon university PittsburghPennsylvania 15213USA Central China Normal university Wuhan 430079China Central South university Changsha 410083China China Center of Advanced Science and Technology Beijing 100190China China university of Geosciences Wuhan 430074China Chung-Ang university Seoul06974Republic of Korea COMSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan Fudan university Shanghai 200433China GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou Normal university Hangzhou 310036China Hebei university Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099MainzGermany Henan Normal university Xinxiang 453007China Henan university Kaifeng 475004China Henan university of Science and Technology Luoyang 471003China Henan university of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner Mongolia university Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile Jilin university Changchun 130012China Joha

The number ofψ(3686)events collected by the BESⅢdetector during the 2021 run period is determined to be(2259.3±11.1)×10~6 by counting inclusiveψ(3686)hadronic *** uncertainty is systematic and the statistical uncertainty is ***,the numbers ofψ(3686)events collected during the 2009 and 2012run periods are updated to be(107.7±0.6)×10~6 and(345.4±2.6)×10~6,*** numbers are consistent with the previous measurements within one standard *** total number ofψ(3686)events in the three data samples is(2712.4±14.3)×10~6.

关键词： ψ(3686) inclusive process Hadronic events BESⅢdetector

Experimental determination of solubilities and＇supersolubilities of 2,2＇,4,4＇,6,6＇-hexanitrostilbene in different organic solvents

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

Chinese Journal of Chemical Engineering 2017年第6期25卷 809-814页

作者： Lizhen Chen Liang Song yupeng Gao Aipeng Zhu Duanlin Cao School of Chemical Engineering and Environment North University of China Taiyuan 030051 China

The laser monitor technique was used to determine solubilities and supersolubilities of HNS in N,N-dimethylformamide, dimethyl sulfoxide, acetonitrile, N-methyl-2-pyrrolidone and 1,4-butyrolactone. The experimental solubility values were correlated with λh equation, modified Apelblat equation and NRTL model. Furthermore, the dissolution enthalpy, dissolution entropy and the Gibbs energy of HNS were calculated by the experimental data. The results show that the solubilities of HNS in the above solvents increase with the increasing temperature. Besides, at the same temperature, the order of solubility is N-methyl-2-pyrrolidone > dimethyl sulfoxide > N,N-dimethylformamide > 1,4-butyrolactone > acetonitrile. The temperature dependence of predicted solubility is in agreement with the experimental data.

关键词： HNS Solubility Liquid-solid equilibrium Correlation Laser monitor technique

Study of utilizing differential gear train to achieve hybrid mechanism of mechanical press

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2007年第1期50卷 69-80页

作者： HE yupeng ZHAO ShengDun ZOu Jun ZHANG ZhiYuan School of Mechanical Engineering Nanjing University of Science&TechnologyNanjing 210094China School of Mechanical Engineering Xi’an Jiaotong UniversityXi’an 710049China

The problems of hybrid input of mechanical press are studied in this paper, with differential gear train as transmission mechanism. It is proposed that “adjust-able-speed amplitude” or “differential-speed ratio” is the important parameters for the hybrid input mechanism. It not only defines the amplitude of the adjustable speed, but also determines the ratio of the power of the servomotor to the power of the conventional motor. The calculating equations of the ratio of transmission in all axes, the power of two motors, and the working load distribution are deduced. The two kinds of driving schemes are put forward that the servomotor and the conven-tional motor simultaneously drive and the servomotor and the conventional motor separately drive. The calculating results demonstrate that the latter scheme can use much lower power of the servomotor, so this scheme makes manufacture and use cost much lower. The latter scheme proposes a feasible way to apply the hybrid mechanism of mechanical press in practice engineering.

关键词： mechanical press hybrid mechanism differential gear train adjustable-speed

Thermal Performance and Mechanics Characteristic for Double Layer Microchannel Heat Sink

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 2019年第2期28卷 271-282页

作者： xu yupeng GONG Liang LI Yongtong BAI Zhang xu Minghai Department of Energy & Power Engineering China University of Petroleum (East China)

Double layer micro-channel heat sink(DLMCHS) has been widely used in various electronic devices; however, the existence of the nonuniform thermal strain distribution in actual operation has adverse effect on the overall stability. In this paper, two optimized designs of DLMCHS with cutting baffles on top and bottom layers are presented based on the traditional DLMCHS. The heat transfer and thermal stress performance are numerically analyzed and compared with the traditional DLMCHS. The results indicate that cutting baffles of micro-channels remarkably improves heat transfer and thermal stress performance. The optimized design with cutting baffles on the bottom layer decreases thermal strain but deteriorates heat transfer performance. The model with cutting baffles on the top layer has better combined thermal strain and heat transfer performance, which reduces thermal strain by about 1.5 times and enhances heat transfer by about 26.5%. For the design with cutting baffles on the top board, adding metal foam in the inlet collector can decrease the total minimum thermal strain by 51.4% and maximum temperature by 1.4 K, and increase the Nusselt number by 15%. These results indicate that DLMCHS with cutting baffles on the top layer has great potential for thermal managements on electronic devices with high power density.

关键词： double layer micro-channel heat sink thermal strain thermal performance optimized design

Temperature-Dependent Far-Infrared Absorption in Cyclotrimethylene Trinitramine Single Crystals using Broadband Time-Domain Terahertz Spectroscopy

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2022年第1期39卷 46-50页

作者： yupeng Liu Jinchun Shi Chongyang Chen Institute of Modern Physics Fudan UniversityShanghai 200433China The Peac Institute of Multiscale Sciences Chengdu 610031China

We investigate the absorption properties of cyclotrimethylene trinitramine(RDx) single crystals from ~15 to150 cm^(-1) using the terahertz time-domain spectroscopy. We observe that all the absorption modes exhibit strong anisotropic behavior in terms of the crystal orientations. We demonstrate that the anharmonic phonon model can well describe the temperature-dependent behaviors of these absorption modes. These results indicate that the intermolecular interaction plays a major role in the collective motion of large number of RDx molecules. Our findings provide important information for understanding and controlling the dynamic properties in the explosive materials.

关键词： spectroscopy ene absorption

Ⅱ型鼠李半乳糖醛酸聚糖的制备方法和结构表征的研究进展

在线全文

学校读者我要写书评

暂无评论

中国药科大学学报 2024年第4期55卷 432-442页

作者：刘育朋施松善步盈萱龚欢王辉俊王顺春上海中医药大学中药研究所上海201203 中药标准化教育部重点实验室上海201203

Ⅱ型鼠李半乳糖醛酸聚糖(RG-Ⅱ)是果胶结构域中的一种,其结构在不同物种之间具有高度的保守性。RG-Ⅱ的主链由约9个半乳糖醛酸经α-1,4糖苷键连接而成,并被6个(A–F)明确定义的侧链取代。其中二糖侧链C、D和单糖侧链E、F的结构在不同来... 详细信息

Ⅱ型鼠李半乳糖醛酸聚糖(RG-Ⅱ)是果胶结构域中的一种,其结构在不同物种之间具有高度的保守性。RG-Ⅱ的主链由约9个半乳糖醛酸经α-1,4糖苷键连接而成,并被6个(A–F)明确定义的侧链取代。其中二糖侧链C、D和单糖侧链E、F的结构在不同来源的RG-Ⅱ中基本保持相同。寡糖侧链A和B则存在轻微的变异性。通过相对分子质量、单糖组成和质谱分析等手段可实现RG-Ⅱ的结构表征。中药中含有RG-Ⅱ结构域的多糖具有很高的药用价值,使用内切多聚半乳糖醛酸酶(Endo-PG)和草酸青霉可将RG-Ⅱ从中药中分离并对其在多糖中的含量进行测定。从葡萄酒中可快速制备大量RG-Ⅱ标准品用于新定量方法的开发,实现对中药活性多糖的质量控制,推动中药多糖的研究进程。

关键词：果胶 Ⅱ型鼠李半乳糖醛酸聚糖 RG-Ⅱ 内切多聚半乳糖醛酸酶草酸青霉葡萄酒

维普期刊数据库博看期刊

Mechanical properties of nanocomposites reinforced by carbon nanotube sponges

在线全文

学校读者我要写书评

暂无评论

Journal of Materiomics 2018年第2期4卷 157-164页

作者： Wenjie Zhao Tong Li yupeng Li Daniel J.O'Brien Mauricio Terrones Bingqing Wei Jonghwan Suhr x.Lucas Lu Department of Mechanical Engineering University of DelawareNewarkDE 19716United States Center for Composite Materials University of DelawareNewarkDE 19716United States Weapons and Materials Research Directorate U.S.Army Research LaboratoryAberdeen Proving GroundMD 21005United States Department of Materials Science and Engineering The Pennsylvania State University104 Davey LabUniversity ParkPA 16802-6300United States Department of Physics and Center for 2-Dimensional and Layered Materials The Pennsylvania State University104 Davey LabUniversity ParkPA 16802-6300United States Research Center for Exotic Nanocarbons(JST) Shinshu UniversityWakasato 4-17-1Nagano380-8553Japan School of Mechanical Engineering&Department of Energy Science Sungkyunkwan University300 Chunchun-dongJangan-guSuwon 440-746South Korea

Carbon nanotube(CNT)sponge exhibits unique porous and hierarchical structure that are beneficial to the design of ultralight and tough *** this study,CNT sponges(undoped and boron doped)reinforced polydimethylsiloxane(PDMS)composites were *** properties of the composite,including compressive modulus,rate-dependent modulus,stress relaxation behaviors,dynamic viscoelastic properties,and their dependency on temperature,were systematically investigated.A micromechanical model,Mori-Tanaka model,was validated to describe the mechanical behaviors of CNT sponge reinforced *** coupling with boron-doped CNT sponge,PDMS composites showed remarkable improvement of mechanical properties,including compressive modulus(70%),viscous modulus(243%)and damping capacity(50%).Such reinforcement effects can be controlled by the morphology of CNT sponges,as the boron-doped and undoped nanocomposites showed distinct viscoelastic *** results proved that CNT sponge reinforcement is a promising strategy to develop engineering composites with both outstanding mechanical stiffness and controllable viscoelastic performances.

关键词： Carbon nanotube sponges Nanocomposite Viscoelastic Damping Micromechanics modeling

Advances in self-powered sports monitoring sensors based on triboelectric nanogenerators

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 Energy Chemistry 2023年第4期79卷 477-488页

作者： Fengxin Sun Yongsheng Zhu Changjun Jia Tianming Zhao Liang Chu yupeng Mao Physical Education Department Northeastern UniversityShenyang 110819LiaoningChina Institute of Carbon Neutrality and New Energy&School of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018ZhejiangChina School of Strength and Conditioning Training Beijing Sport UniversityBeijing 100084China State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of ScienceShenyang 110016LiaoningChina Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110016LiaoningChina

The new era of the internet of things brings great opportunities to the field of intelligent *** collection and analysis of sports data are becoming more intelligent driven by the widely-distributed sensing network *** nanogenerators(TENGs)can collect and convert energy as selfpowered sensors,overcoming the limitations of external power supply,frequent power replacement and high-cost ***,we introduce the working modes and principles of TENGs,and then summarize the recent advances in self-powered sports monitoring sensors driven by TENGs in sports equipment facilities,wearable equipment and competitive sports *** discuss the existing issues,i.e.,device stability,material sustainability,device design rationality,textile TENG cleanability,sports sensors safety,kinds and manufacturing of sports sensors,and data collection comprehensiveness,and finally,propose the *** work has practical significance to the current TENG applications in sports monitoring,and TENG-based sensing technology will have a broad prospect in the field of intelligent sports in the future.

关键词： Triboelectric nanogenerator Wearable energy sensors Sport monitoring