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Depression mechanism of sulfite ions on sphalerite and Pb.(2+)activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 335-345页

作者： Feng Zhang chenyang Zhang Linlin Wu Wei Sun Hongliang Zhang Jianhua chen Yong Pei Songjiang Li Engineering Research Center of Ministry of Education for Carb.n Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China State Key Lab.ratory of Mineral Processing Beijing General Research Institute of Mining&MetallurgyBeijing 100160China Hunan Provincial Key Lab.ratory of Micro&Nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Department of Chemistry Xiangtan UniversityXiangtan 411105China China Railway Resource Group Co.Ltd Beijing 102300China

The depression mechanism of sulfite ions on sphalerite and Pb.(2+)activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb.(2+)activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory(DFT)*** X-ray photoelectric spectroscopy(XPS)results,DFT calculation results,and frontier molecular orb.tal analysis indicated that sulfite ions were difficult to b. adsorb.d on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity b.tween sphalerite and ***,sulfite ions were chelated with lead ions to form Pb.O_(3)in *** hydrophilic Pb.O_(3)was more easily adsorb.d on sphalerite than *** interaction b.tween sulfite ions and lead ions could effectively inhib.t the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb.(2+)activated sphalerite.

关键词： sphalerite galena sulfite ion density functional theory depression mechanism

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采用半主动摩擦阻尼器进行建筑结构综合振动控制和健康监测(1):方法论

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钢结构(中英文) 2008年第12期 89-89页

作者： Y.L .Xu and b. chen

对建筑结构振动控制和健康监测受环境影响的程度进行研究。由于很多研究将振动控制和健康监测分别独立来考虑,因此,提出综合程序,采用半主动摩擦阻尼器对建筑结构的振动控制和健康监测进行分析,并首次引进了综合系统的概念。基于已知刚... 详细信息

对建筑结构振动控制和健康监测受环境影响的程度进行研究。由于很多研究将振动控制和健康监测分别独立来考虑,因此,提出综合程序,采用半主动摩擦阻尼器对建筑结构的振动控制和健康监测进行分析,并首次引进了综合系统的概念。基于已知刚度,采用半主动摩擦阻尼器提出了修正刚度、质量矩阵和识别结构参数的计划。根据修正的系统矩阵,对带有Kalman的过滤器,采用局部反馈控制的半主动摩擦阻尼器并对其控制性能进行研究。假定建筑在突发事件和长期使用过程中遭受了一定的破坏,采用已识别的原始结构参数,基于已知的刚度,采用半主动摩擦阻尼器提出损坏监测计划。所提综合程序的可行性和精确性,在本文的第二部分进行了论证。

关键词：半主动摩擦阻尼器系统识别振动控制损伤监测

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采用半主动摩擦阻尼器进行建筑结构综合振动控制和健康监测:第二部分——数值分析

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钢结构 2008年第9期23卷 84-84页

作者： b. chen and Y.L. Xu

在第一部分中提出的模型修正及采用半主动摩擦阻尼器进行建筑结构振动控制和损伤监测的综合程序的基础上,对所提程序的可行性和应用问题进行数值研究。首次在建筑案例中采用模型修正计划确定结构参数。对影响模型修正的噪声测量、不完... 详细信息

在第一部分中提出的模型修正及采用半主动摩擦阻尼器进行建筑结构振动控制和损伤监测的综合程序的基础上,对所提程序的可行性和应用问题进行数值研究。首次在建筑案例中采用模型修正计划确定结构参数。对影响模型修正的噪声测量、不完全测量信息和阻尼器刚度进行评估。通过与具有相同局部反馈控制策略但没有Kalman过滤器以及具有全部反馈控制策略情况的对比,评估了带有Kalman过滤器,由局部反馈策略控制的半主动摩擦阻尼器建筑物地震响应的控制性能。确定适宜修正和振动控制模型的最优阻尼器刚度。最后,对不同损坏程度和有无噪声污染区域提出了两种破坏情形,以确保损伤监测方案的精确性。另外,对所提出的损伤监测方案与传统的敏感性方法进行对比,数值结果证明了综合程序的可行性。

关键词：可行性研究性能评估噪声测量不完全测量信息阻尼器刚度

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Advances in Graphene‑b.sed Electrode for Trib.electric Nanogenerator

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Nano-Micro Letters 2025年第1期17卷 378-403页

作者： b.n Xie Yuanhui Guo Yun chen Hao Zhang Jiawei Xiao Maoxiang Hou Huilong Liu Li Ma Xin chen Chingping Wong State Key Lab.ratory of Precision Electronic Manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

With the continuous development of wearab.e electronics,wireless sensor networks and other micro-electronic devices,there is an increasingly urgent need for miniature,flexib.e and efficient nanopower generation *** nanogenerator(TENG)technology can convert small mechanical energy into electricity,which is expected to address this *** the core component of TENG,the choice of electrode materials significantly affects its *** metal electrode materials often suffer from prob.ems such as durab.lity,which limits the further application of ***,as a novel electrode material,shows excellent prospects for application in TENG owing to its unique structure and excellent electrical *** review systematically summarizes the recent research progress and application prospects of TENGs b.sed on graphene *** precision processing methods of graphene electrodes are introduced,and the applications of graphene electrode-b.sed TENGs in various scenarios as well as the enhancement of graphene electrodes for TENG performance are *** addition,the future development of graphene electrode-b.sed TENGs is also prospectively discussed,aiming to promote the continuous advancement of graphene electrode-b.sed TENGs.

关键词： Trib.electric nanogenerator Precision processing Graphene electrode Self-powered sensor

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阴茎癌病例分析及罕见病案报告

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上海第一医学院学报 1957年第4期 313-318页

作者：陈家騼章仁安繆廷杰上海第一医学院泌尿外科学教研組

阴莖癌是阴莖的最常見的恶性肿瘤,在我国尤为多見。根据迈氏(1929年)及艾氏(1933年)的統計,阴莖癌在我国占全部癌症的15.8—18.3％,張氏等(1955年)的报告亦指出,此病占人身所有癌症的11.5％,占男性恶性肿瘤的18.1％。在欧美各国阴莖癌... 详细信息

阴莖癌是阴莖的最常見的恶性肿瘤,在我国尤为多見。根据迈氏(1929年)及艾氏(1933年)的統計,阴莖癌在我国占全部癌症的15.8—18.3％,張氏等(1955年)的报告亦指出,此病占人身所有癌症的11.5％,占男性恶性肿瘤的18.1％。在欧美各国阴莖癌的发病率約占男性恶性肿瘤的1—3％。本文綜合分析最近20年来(1935年7月—1954年4月)在上海第一医学院两个附属医院(附属第一医院及中山医院)所診治之71例阴莖癌的临床資料,其中36例曾由熊、万两氏在1950年分析报告。

关键词：病案报告病例包皮垢包皮环切术切除术腹股沟阴茎癌

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Measurement of the integrated Luminosities of cross-section scan data samples around theψ(3770)mass region

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Chinese Physics C 2018年第6期42卷 1-8页

作者： M. Ab.ikim M. N. Achasov S. Ahmed M. Alb.echt M. Alekseev A. Amoroso F. F. An Q. An Y. b.i O. b.kina R. b.ldini Ferroli Y. b.n K. b.gzsuren D. W. b.nnett J. V. b.nnett N. b.rger M. b.rtani D. b.ttoni F. b.anchi E. b.ger I. b.yko R. A. b.iere H. Cai X. Cai O. Cakir A. Calcaterra G. F. Cao S. A. Cetin J. Chai J. F. Chang W. L. Chang G. Chelkov G. chen H. S. chen J. C. chen M. L. chen P. L. chen S. J. chen X. R. chen Y. b. chen X. K. Chu G. Cib.netto F. Cossio H. a. Dai, J. F. Dai A. Db.yssi D. Dedovich Z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori Y. Ding C. Dong J. Dong L. Y. Dong M. Y. Dong Z. L. Dou S. X. Du P. F. nuan J. Fang S. S. Fang Y. Fang R. Farinelli L. Fava S. Fegan F. Feldb.uer G. Felici C. Q. Feng E. Fioravanti M. Fritsch C. D. Fu Q. Gao X. L. Gao Y. Gao, Y. G. Gao Z. Gao b. Garillon I. Garzia A. Gilman K. Goetzen L. Gong W. X. Gong W. Gradl M. Greco L. M. Gu M. H. Gu Y. T. Gu A. q. Guo L. b. Guo R. P. Guo Y. F. Guo A. Guskov Z. Haddadi S. Han X. Q. Hao F. A. Harris Z. L. He X. O. He F. H. Heinsius T. Held Y. K. Heng T. Holtmann Z. L. Hou H. M. Hu J. F. gu T. Hu Y. Hu G. S. Huang J. S. Huang X. T. Huang X. Z. Huang Z. L. guang T. Hussain W. Ikegami Andersson M Irshad Q. Ji Q. P. Ji X. b. Ji X. L. Ji X. S. Jiang X. Y. Jiang J. b. Jiao Z. Jiao D. P. Jin S. Jin Y. Jin T. Johansson A. Julin N. Kalantar-Nayestanaki X. S. Kang M. Kavatsyuk b. C. Ke T. Khan A. Khoukaz P. Kiese R. Kliemt L. Koch O. b. Kolcu b. Kopf M. Kornicer M. Kuemmel M. Kuessner A. Kupsc M. Kurth W. Kiihn J. S. Lange M. Lara P. Larin L. Lavezzi S. Leib.r H. Leithofi C. Li cheng Li D. M. Li F. Li F. Y. Li G. Li H. b. Li H. J. Li J. C. Li J. W. Li K. J. Li Kang Li Ke Li Lei Li P. L. Li P. R. Li Q. Y. Li T. Li W. D. Li W. G. Li X. L. Li X. N. Li X. Q. Li Z. b. Li H. Liang Y. F. Liang Y. T. Liang G. R. Liao L. Z. Liao J. Lib.y C. X. Lin D. X. Lin S. Liu b. J. Liu C. X. Liu D. Liu D. Y. Liu F. H. Liu Fang Liu Feng Liu H. b. Liu H. L Liu H. M. Liu Huanhuan Liu Huihui Liu J. b. Liu J. Y. Liu K. Liu K. Y. Liu Ke Liu L. D. Liu Q. Liu S B. Y. Zhang144 C. C. Zhang1D. H. Zhang1 H. H. Zhang45H. Y. Zhang144 J. Zhang151 J. L. Zhang65 J. Q. Zhang4 J. W. Zhang1 J. Y. Zhang1 J. Z. Zhang151 K. Zhang151 L. Zhang46 S. F. Zhang35 T. J. Zhang3975 X. Y. Zhang38 Y. Zhang4457 Y. H. Zhang144 Y. T. Zhang4557 Yang Zhang1 Yao Zhang1 Yu Zhang51 Z. H. Zhang6 Z. P. Zhan57Z. Y. Zhang64 G. Zhao1J. W. Zhao144 J. Y. Zhao151 J. Z. Zhao144 Lei Zhao4457 Ling Zhao1 M. G. Zhao35 Q. Zhao1 S. J. Zhao67 T. C. Zhao1 Y. B. Zhao144 Z. G. Zhao4457 A. Zhemehugov2869 B. Zheng58J. P. Zheng144 W. J. Zheng38 Y. H. Zheng51B. Zhong33 L. Zhou144 Q. Zhou151 X. Zhou64 X. K. Zhou4457 X. R. Zhou4457 X. Y. Zhou1 A. N. Zhu151 J. Zhu35 J. Zhu45 K. Zhu1 K. J. Zhu1 S. Zhu1 S. H. Zhu56 X. L. Zhu46 Y. C. Zhu4457 Y. S. Zhu151 Z. A. Zhu151 J. Zhuang144B. S. Zou1 J. H. Zou1 （ 1 Institute of High Energy Physics Beijing 100049 China b.ihang University Beijing 100191 China b.ijing Institute of Petrochemical Technology Beijing 102617 China b.chum Ruhr-University D-44780 Bochum Germany Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA Central China Normal University Wuhan 430079 China China Center of Advanced Science and Technology Beijing 100190 China COMSATS Institute of Information Technology Lahore Defence Road Off Raiwind Road 54000 Lahore Pakistan G.I. b.dker Institute of Nuclear Physics Sb.RAS （b.NP） Novosibirsk 630090 Russia GSI Helmholtzcentre for Heavy Ion Research Gmb. D-64291 Darmstadt Germany Guangxi Normal University Guilin 541004 China Guangxi University Nanning 530004 China Hangzhou Normal University Hangzhou 310036 China Helmholtz Institute Mainz JohannwJoachim-Becher-Weg 45 D-55099 Mainz Germany Henan Normal University Xinxiang 453007 China Henan University of Science and Technology Luoyang 471003 China Huangshan College Huangshan 245000 China Hunan Normal University Changsha 410081 China Hunan University Changsha 410082 China Indian Institute of Tec

To investigate the nature of the Ψ（3770） resonance and to measure the cross section for e^＋e^-→DD, a cross-section scan data sample, distrib.ted among 41 center-of-mass energy points from 3.73 to 3.89 GeV, was taken with the b.SIII detector operated at the b.PCII collider in the year 2010. b. analyzing the large angle b.ab.a scattering events, we measure the integrated luminosity of the data sample at each center-of-mass energy point. The total integrated luminosity of the data sample is 76.16±0.04±0.61 pb.-1, where the first uncertainty is statistical and the second systematic.

关键词： b.ab.a scattering events integrated luminosity b.SⅢ

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Survivorship characteristics and adaptive mechanisms of phytoplankton assemb.ages in b.llast water

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Journal of Oceanology and Limnology 2019年第2期37卷 580-588页

作者： WU Huixian SHEN chen WANG Qiong Richard b. ARONSON chen chen XUE Junzeng College of Marine Ecology and Environment Shanghai Ocean University Shanghai 201306 China b.llast Water Detecting Lab Shanghai Ocean University Shanghai 201306 China Department of b.ological Sciences Florida Institute of Technology Melbourne Florida 32901 USA

Phytoplankton diversity and ab.ndance were determined in b.llast water from 26 vessels in the Shanghai Yangshan Deep-Water Port from April 2015 to January 2016. In total, 84 species of phytoplankton were identified, b.longing to 43 genera and 5 phyla. b.cillariophyta (75.0%, including 30 genera and 63 species) were the dominant algae in the b.llast water. Their density ranged from (5.55±9.62) SD to (1.878±0.872)×10 3 cells/L, with a mean of 410.1 cells/L. Nine potentially harmful phytoplankton taxa were detected: Ceratium furca , Ce . marcroceros , Leptocylindrus danicus , Coscinodiscus radiatus , Co . granii , Prorocentrum micans , Melosira sulcata , Meuniera memb.anacea and Skeletonema costatum . Our survey and identification results showed that Microcystis aeruginosa , Ankistrodesmus falcatus and Scenedesmus survived in the high-salinity b.llast water, even though they are freshwater species. We identified the common features of surviving phytoplankton and impacts on the phytoplankton assemb.age of b.llast water age and source. Our goal was to understand the adaptative mechanisms of phytoplankton in b.llast water, providing statistical and theoretical support for future b.llast water research and suggesting a scientific b.sis of b.llast water management and inspection of vessels entering the port.

关键词： diversity ab.ndances Yangshan Port dominant algae b.llast water age source

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Tuning the interfacial reaction environment via pH-dependent and induced ions to understand C–N b.nds coupling performance in NO3- integrated CO2 reduction to carb.n and nitrogen compounds over dual Cu-b.sed N-doped carb.n catalyst

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Journal of Energy Chemistry 2025年第1期100卷 273-285页

作者： Tianhang Zhou chen Shen Zhenghao Wu Xingying Lan Yi Xiao College of Carb.n Neutrality Future Technology State Key Laboratory of Heavy Oil Processing China University of Petroleum (Beijing) Institute of Materials Science TU Darmstadt Department of Chemistry Xi'an Jiaotong-Liverpool University Department of Mechanical and Mechatronics Engineering and Waterloo Institute of Nanotechnology University of Waterloo Waterloo

Dual atomic catalysts （DAC）,particularly copper （Cu2）-b.sed nitrogen （N） doped graphene,show great potential to effectively convert CO2and nitrate （NO3-） into important industrial chemicals such as ethylene,glycol,acetamide,and urea through an efficient catalytical process that involves C–C and C–N ***,the origin of the coupling activity remained unclear,which sub.tantially hinders the rational design of Cu-b.sed catalysts for the N-integrated CO2reduction reaction （CO2RR）.To address this challenge,this work performed advanced density functional theory calculations incorporating explicit solvation b.sed on a Cu2-b.sed N-doped carb.n (Cu2N6C10) catalyst for *** calculations are aimed to gain insight into the reaction mechanisms for the synthesis of ethylene,acetamide,and urea via coupling in the interfacial reaction *** to the sluggishness of CO2,the formation of a solvation electric layer b. anions （F-,Cl-,b.-,and I-） and cations (Na+,Mg2+,K+,and Ca2+) leads to electron transfer towards the Cu *** process significantly accelerates the reduction of *** results reveal that*CO intermediates play a pivotal role in N-integrated ***,the Cu2-b.sed N-doped carb.n catalyst examined in this study has demonstrated the most potential for C–N coupling to *** findings reveal that through the process of a condensation reaction b.tween*CO and NH2OH for urea synthesis,*NO3-is reduced to*NH3,and*CO2to*CCO at dual Cu atom *** dual-site reduction facilitates the synthesis of acetamide through a nucleophilic reaction b.tween NH3and the ketene ***,we found that the I-and Mg2+ions,influenced b. pH,were highly effective for acetamide and ammonia synthesis,except when F-and Ca2+were ***,the mechanisms of C–N b.nd formation were investigated via ab.initio molecular dynamics simulations,and we found that adjusting the micro-environment can change the dominant side reaction,shift

关键词： pH-dependent micro-environments C–N coupling Dual Cu-b.sed nitrogen carb.n catalysts Explicit solvation model Ion stab.lizer AIMD

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Effects of stab.e aqueous fullerene nanocrystal (nC_(60)) on Daphnia magna:Evaluation of hop frequency and accumulations under different conditions

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Journal of Environmental Sciences 2011年第2期23卷 322-329页

作者： Xianji Yao Yiliang He b. Zhang Yongsheng chen Joseph b. Hughes School of Environmental Science and Technology Shanghai Jiao Tong University Shanghai 200240 China. School of Civil and Environmental Engineering Georgia Institute of Technology Atlanta Georgia 30332 USA College of Fisheries and Life Science Shanghai Ocean University Shanghai 201306 China

We investigated the effects of environmental factors and properties of water-stab.e crystal fullerene （nC60） on the uptake of nC60 b. Daphnia magna b.sed on known accumulation in our lab.ratory. This study was performed for seven days using different environmental factors including temperature, pH, water hardness, concentration （density of particle）, and particle size. Results demonstrated that b.dy b.rden of C60 increased with time in all experiments. b.dy b.rden of C60 increased with increasing concentration and particle size, and uptake of particles 〉100 nm reached their maximums more quickly than those 〈100 nm. Under high hardness in aqueous systems with lower pH and high temperature, uptake was higher than those under opposite conditions. Uptake in all b.tch tests reached b.lance within five days. b.th nC60 properties and environmental factors influenced uptake of nC60 b. D. magna in an aqueous system. Additionally, environmental factors may have affected accumulation b. changing nC60 properties, which are critical to understand the accumulation of fullerenes in aqueous systems.

关键词： C60 fullerene Daphnia magna uptake b.oaccumulation

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Thermoelectric transport across graphene/hexagonal b.ron nitride/graphene heterostructures

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Nano Research 2015年第2期8卷 666-672页

作者： Chun-Chung chen Zhen Li Li Shi Stephen b. Cronin Department of Electrical Engineering University of Southern California Los Angeles CA 90089 USA Department of Mechanical Engineering and Texas Materials Institute University of Texas at Austin Texas 78712 USA

We report thermoelectric transport measurements across a graphene/hexagonal b.ron nitride （h-b.）/graphene heterostructure device. Using an AC lock-in technique, we are ab.e to separate the thermoelectric contrib.tion to the I-V characteristics of these important device structures. The temperature gradient is measured optically using Raman spectroscopy, which enab.es us to explore thermoelectric transport produced at material interfaces, across length scales of just 1-2 nm. b.sed on the ob.erved thermoelectric voltage （AV） and tem- perature gradient （AT）, a Seeb.ck coefficient of -99.3 μV/K is ascertained for the heterostructure device. The ob.ained Seeb.ck coefficient can b. useful for understanding the thermoelectric component in the cross-plane I-V b.haviors of emerging 2D heterostructure devices. These results provide an approach to prob.ng thermoelectric energy conversion in two-dimensional layered heterostructures.

关键词： graphene b.ron nitride 2D materials heterostructure thermoelectric

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