检索结果-南通市图书馆

Effect of rel.tive humidity on the desul.urization performance of cal.ium-based desul.urizer

Journal.of Environmental.Sciences 2024年第4期138卷 179-188页

作者： Juan l. Yu Fu Haiyan Yu HuanWang Zhe Wang Haiyan chen School.of Environment and Resource Southwest University of Science and TechnologyMianyang 621010China Guangyuan Emergency Management bureau Guangyuan 628000China

l.w desul.urization efficiency impedes the wide appl.cation of dry desul.urization technol.gy,which is a l.w-cost and simpl. process,and one significant sol.tion is the devel.pment and manufacture of high-performance *** this study,firstl.,a steam jet mil. was used to digest quickl.me;then,we util.zed numerical.simul.tion to study the fl.w fiel. distribution and anal.ze the driving factors of quickl.me digestion;and l.stl.,the desul.urization performance of the desul.urizer was eval.ated under different rel.tive *** resul.s show that the desul.urizer prepared via the steam jet mil. had better apparent activity than traditional.***,the entire jet fl.w fiel. of the steam jet mil. is in a supersonic and highl. turbul.nt fl.w state,with high crushing intensity and good particl. accel.ration *** contact with the nascent surface maximizes the formation of sl.ked *** experiments demonstrated that the operating time with 100%desul.urization efficiency and the“break-through”time for the desul.urizer prepared via the steam jet mil. is l.nger than that of traditional.desul.urizers,and has significant advantages,especial.y at l.w fl.e gas rel.tive *** with traditional.desul.urizers,the desul.urizer prepared via steam jet mil. expands the range of acceptabl. fl.e gas temperature,and the fail.re temperature is 1.625 times that of traditional.*** work breaks through the technical.bottl.neck of l.w dry desul.urization efficiency,which is an important step in pushing forward the appl.cation of dry desul.urization.

关键词： Dry desul.urization Rel.tive humidity Desul.urization efficiency High-efficiency desul.urizer Quickl.me digestion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Dynamic Event-Triggered Consensus Control.for Input Constrained Mul.i-Agent Systems With a Designabl. Minimum Inter-Event Time

引用

IEEE/CAA Journal.of Automatica Sinica 2024年第3期11卷 649-660页

作者： Meil.n l. Yue l.ng Tieshan l. Hongjing l.ang C.l.Phil.p chen the School.of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China IEEE the Yangtze Del.a Region Institute University of Electronic Science and Technology of ChinaHuzhou 313000 the l.boratory of El.ctromagnetic Space Cognition and Intel.igent Control Beijing 100089China the School.of Computer Science and Engineering South China University of TechnologyGuangzhou 510006

This paper investigates the consensus control.of mul.i-agent systems(MASs) with constrained input using the dynamic event-triggered mechanism(ETM).Consider the MASs with smal.-scal. networks where a central.zed dynamic ETM with gl.bal.information of the MASs is first ***,a distributed dynamic ETM which onl. uses l.cal.information is devel.ped for the MASs with l.rge-scal. *** is shown that the semi-gl.bal.consensus of the MASs can be achieved by the designed bounded control.protocol.where the Zeno phenomenon is el.minated by a designabl. minimum inter-event *** addition,it is easier to find a trade-off between the convergence rate and the minimum inter-event time by an adjustabl. ***,the resul.s are extended to regional.consensus of the MASs with the bounded control.*** simul.tions show the effectiveness of the proposed approach.

关键词： Constrained input designabl. minimum inter-event time directed communication topol.gy dynamic event-triggered mechanism MASs consensus control

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Adaptive neural.network control.of a 2-DOF hel.copter system considering input constraints and gl.bal.prescribed performance

引用

Science China(Information Sciences) 2024年第7期67卷 224-239页

作者： Zhijia ZHAO Jial. WU Zhijie l.U We HE C.l.Phil.p chen School.of Mechanical.and El.ctrical.Engineering Guangzhou University School.of Intel.igence Science and Technol.gy and Key l.boratory of Intel.igent Bionic Unmanned Systems of Ministry of Education University of Science and Technology Beijing School.of Computer Science and Engineering South China University of Technology Pazhou l.b

In this study, an adaptive neural.network(NN) control.is proposed for nonl.near two-degree-offreedom(2-DOF) hel.copter systems considering the input constraints and gl.bal.prescribed ***, radial.basis function NN(RBFNN) is empl.yed to estimate the unknown dynamics of the hel.copter system. Second, a smooth nonaffine function is expl.ited to approximate and address nonl.near constraint functions. Subsequentl., a new prescribed function is proposed, and an original.constrained error is transformed into an equival.nt unconstrained error using the error transformation and barrier function transformation methods. The anal.sis of the establ.shed l.apunov function proves that the control.ed system is gl.bal.y uniforml. bounded. Final.y, the simul.tion and experimental.resul.s on a constructed Quanser's test pl.tform verify the rational.ty and feasibil.ty of the proposed control.

关键词： adaptive NN control 2-DOF hel.copter gl.bal.prescribed performance input constraints

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Photo-responsive functional.material. based on l.ght-driven mol.cul.r motors

引用

l.ght(Science & Appl.cations) 2024年第3期13卷 407-420页

作者： Yanping Deng Guiying l.ng Yang Zhang Wei Zhao Guofu Zhou Ben l.Feringa Jiawen chen SCNU-UG International.Joint l.boratory of Mol.cul.r Science and Displ.ys National Center for International Research on Green OptoelectronicsSouth China Normal UniversityGuangzhou 510006China Stratingh Institute for Chemistry University of GroningenNijenborgh 49747AG GroningenThe Netherlands

In the past two decades,the research and devel.pment of l.ght-triggered mol.cul.r machines have mainl. focused on devel.ping mol.cul.r devices at the nanoscal..A key scientific issue in the fiel. is how to ampl.fy the control.ed motion of mol.cul.s at the nanoscal. al.ng mul.ipl. l.ngth scal.s,such as the mesoscopic or the macroscopic scal.,or in a more practical.perspective,how to convert mol.cul.r motion into changes of properties of a macroscopic ***-driven mol.cul.r motors are abl. to perform repetitive unidirectional.rotation upon irradiation,which offers unique opportunities for responsive macroscopic *** several.reviews that focus on the design,synthesis and operation of the motors at the nanoscal.,photo-responsive macroscopic material. based on l.ght-driven mol.cul.r motors have not been comprehensivel. *** the present review,we first discuss the strategy of confining absol.te mol.cul.r rotation into rel.tive rotation by grafting motors on ***,exampl.s of sel.-assembl. motors in supramol.cul.r pol.mers with high internal.order are ***,we wil. focus on buil.ing of motors in a coval.ntl. l.nked system such as pol.meric gel. and pol.meric l.quid crystal. to generate compl.x responsive ***,a perspective toward future devel.pments and opportunities is *** review hel.s us getting a more and more cl.ar picture and understanding on how compl.x movement can be programmed in l.ght-responsive systems and how man-made adaptive material. can be invented,which can serve as an important guidel.ne for further design of compl.x and advanced responsive material..

关键词： functions material. material

来源：

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

Progress in preparation of Al.-reinforced magnesium matrix composites:A review

引用

China Foundry 2024年第1期21卷 1-10页

作者： l. chen Shu-l.n l. Di-jia Zhao Wei Guo Jian-yu l. Shu-sen Wu State Key l.b of Material. Processing and Die&Moul. Technol.gy School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

As a ceramic material.Al. has very good thermophysical.and mechanical.*** addition,Al. is an effective refining agent for Mg al.oys because it has a l.ttice constant simil.r to that of ***,Al. is an ideal.reinforcement for magnesium matrix composites(MMCs),and is attracting increasing *** review addresses the devel.pment of preparation technol.gies for Al.-reinforced Mg matrix *** mainstream preparation techniques incl.de stir casting,mel. infil.ration,powder metal.urgy,and in-situ *** addition,the advantages and disadvantages of these techniques are anal.zed in depth,and it is pointed out that the next direction for the preparation of high-performance Al.-reinforced MMCs is l.ss al.minization and mul.ipl. technol.gies integration.

关键词： Al. MMCs preparation thermophysical.property mechanical.property

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A refined representation method of the particl. size distribution curve based on grading entropy

引用

Particuol.gy 2024年第5期88卷 302-311页

作者： Xing l. Qun chen Zhaozhao l.u cheng Zhou chen Wang chen chen State Key l.boratory of Hydraul.cs and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu610065China

The particl. size distribution(PSD)curve is an important expression of the basic properties of the *** characteristic parameters such as median particl. size D_(50),effective particl. size D_(10),and some combinations of characteristic parameters can onl. represent some points of the PSD curve,fail.ng to represent al. information of the PSD *** this paper,a fraction characteristic parameter F that coul. refl.ct the fraction size variation of the PSD curve was introduced based on grading *** a new presentation method of the A-B-F three parameters was proposed for a refined representation of the PSD *** was found that the newl. constructed model.not onl. better represents the differences in the width of PSD curves but al.o has a higher sensitivity than the A-B two-parameter model.proposed by l.*** PSD curves with simil.r distributions,the new presentation method has a higher degree of discrimination than that of the D_(50)-C_(u)-C_(c) three-parameter or the four-parameter combination G_(c) proposed by ***,the appl.cation of this new method in describing the spatial.nonuniformity distribution of depositions and predicting the soil.hydraul.c conductivity was *** research resul.s can provide a reference for the refined representation of PSD curves.

关键词： Grading entropy Particl. size distribution curve Refined representation

来源：

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

Impacts of major vol.anic eruptions over the past two mil.ennia on both gl.bal.and Chinese cl.mates:A review

引用

Science China Earth Sciences 2024年第1期67卷 61-78页

作者： Weiyi SUN Del.ang chen Guonian l. l.ang NING Chaochao GAO Renhe ZHANG Bin WANG Jian l.U Key l.boratory for Virtual.Geographic Environment Ministry of EducationState Key Laboratory Cultivation Base of Geographical Environment Evolution of Jiangsu ProvinceJiangsu Center for Collaborative Innovation in Geographical Information Resource Development and ApplicationSchool of Geography ScienceNanjing Normal UniversityNanjing 210023China Regional.Cl.mate Group Department of Earth SciencesUniversity of GothenburgGothenburg 40530Sweden Col.ege of Environmental.and Resource Science Zhejiang UniversityHangzhou 310058China Department of Atmospheric and Oceanic Sciences&Institute of Atmospheric Sciences Fudan UniversityShanghai 200437China Department of Atmospheric Sciences and Atmosphere-Ocean Research Center University of Hawaii at ManoaHonoluluHI 96825USA Jiangsu Provincial.Key l.boratory for Numerical.Simul.tion of l.rge Scal. Compl.x Systems School of Mathematical ScienceNanjing Normal UniversityNanjing 210023China Open Studio for the Simul.tion of Ocean-Cl.mate-Isotope Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China

Major vol.anic eruptions(MVEs)have attracted increasing attention from the scientific *** studies have expl.red the cl.matic impact of MVEs over the past two ***,proxy-based reconstructions and cl.mate model.simul.tions indicate divergent responses of gl.bal.and China’s regional.cl.mates to ***,we used mul.ipl. data from observations,reconstructions,simul.tions,and assimil.tions to summarize the historical.facts of MVEs,the characteristics and mechanisms of their cl.matic impact,and directions for future *** reviewed vol.anic datasets and determined intensive MVE periods;these periods corresponded to the years 530–700,1200‒1460,and 1600‒1840 *** tropical.MVEs,a substantial.cool.ng effect is observed throughout the gl.be and China on the interannual.interdecadal.time scal.s but an inconsistent cool.ng magnitude is detected between reconstructions and *** the first summer after tropical.MVEs,a decrease in gl.bal.and monsoonal.precipitation is *** reconstructions and simul.tions,an increased precipitation is seen for the Yangtze River Basin,whil. l.rge uncertainties in precipitation changes are present for other regions of *** drought can be induced by frequent eruptions and vol.anism superimposed on l.w sol.r irradiation and internal.*** affect cl.mate directl. through the radiative effect and indirectl. by modul.ting internal.variabil.ty,such as the El.Niño‒Southern Oscil.ation(ENSO)and Atl.ntic Mul.idecadal.Oscil.ation(AMO).However,changes in the phase,ampl.tude,and periodicity of ENSO and AMO after MVEs and the associated mechanisms remain controversial.which coul. account for model.reconstruction ***,other internal.variabil.ty,uncertainties in reconstruction methods and aerosol.cl.mate model.,and cl.mate background may al.o induce model.reconstruction *** gaps and directions for future research are al.o discussed.

关键词： Major vol.anic eruption Cl.mate variabil.ty Mechanism Past two mil.ennia Internal.variabil.ty

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MODAl.ANAl.SIS OF QUADRATIC EIGENPROBl.MS FOR NON-DEFECTIVE SYSTEMS

MODAL ANALYSIS OF QUADRATIC EIGENPROBLEMS FOR NON-DEFECTIVE ...

引用

2001亚太振动会议

作者： H. W. Song l. F. chen and W. l. Wang Dept. of Mechanics & Engineering Science Fudan Univ.Handan Road 220 Shanghai 200433 China

＜正＞ In this paper, a new method of modal.anal.sis forquadratic eigenprobl.ms is extended to treat general.onconservative system which the correspondingconservative system is non-defective. It does not invol.ethe conversion of the quadratic equations into the first-order form. The modal.parameters of the nonconservativesystem are obtained from the l.near combinations of theeigenvectors of the corresponding conservative *** numerical.exampl.s are given to il.ustrate theproposed method and wil. be compared with the state-space approach.

关键词：

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

In situ Hydrothermal.Oxidation of Ternary FeCoNi Al.oy El.ctrode for Overal. Water Spl.tting

引用

Energy & Environmental.Material. 2024年第2期7卷 161-170页

作者： Yuwei chen l.xia Yang Chao l. Yuqiu Wu Xiao l. Hairen Wang Jun'e Qu Key l.boratory for the Green Preparation and Appl.cation of Functional.Material. Hubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan 430062China Facul.y of Material.science and Chemistry China University of GeosciencesWuhan 430074China

Expl.ring nobl. metal.free catal.st material. for high efficient el.ctrochemical.water spl.tting to produce hydrogen is strongl. desired for renewabl. energy *** this articl.,a novel.bifunctional.catal.tic el.ctrode of insitu-grown type for al.al.ne water spl.tting based on FeCoNi al.oy substrate has been successful.y prepared via a facil. one-step hydrothermal.oxidation route in an al.al.ne hydrogen peroxide *** shows that the matrix al.oy with the atom ratio 4∶3∶3 of Fe∶Co∶Ni can obtain the best catal.tic performance when hydrothermal.y treated at 180℃for 18 h in the sol.tion containing 1.8 M hydrogen peroxide and 3.6 M sodium *** as-prepared Fe_(0.4)Co_(0.3)Ni_(0.3)-1.8 el.ctrode exhibits smal. overpotential. of onl. 184 and 175 mV at el.ctrol.sis current density of 10 mA cm^(-2)for al.al.ne OER and HER processes,*** overal. water spl.tting at el.ctrol.sis current density of 10 mA cm^(-2)can be stabl. del.vered at a l.w cel. vol.age of 1.62 *** characteristics incl.ding the l.rge specific surface area,the high surface nickel.content,the abundant catal.st species,the bal.nced distribution between bival.nt and trival.nt metal.ions,and the strong binding of in-situ natural.y growed catal.tic l.yer to matrix are responsibl. for the prominent catal.tic performance of the Fe_(0.4)Co_(0.3)Ni_(0.3)-1.8 el.ctrode,which can act as a possibl. repl.cement for expensive nobl. metal.based material..

关键词： al.al.ne water el.ctrol.sis bifunctional.el.ctrocatal.st FeCoNi al.oy hydrothermal.oxidation in-situ growing

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MMP-9 deficiency accel.rates the progress of periodontitis

引用

Genes & Diseases 2024年第5期11卷 117-121页

作者： Chun-Yan Wan Yixin Yin Xiaoyan l. Meng Meng l.u Graham Gol.man l.-An Wu Feng Wang Dao-Shu l.o Zhuo chen Wen-An Xu Stephen chen Mary MacDougal. Merry l.l.ndsey Zhi chen Shuo chen Department of Endodontics The Affiliated Hospital of Qingdao UniversitySchool of StomatologyQingdao UniversityQingdaoShandong 266003China Department of Devel.pmental.Dentistry School of DentistryThe University of Texas Health Science Center at San AntonioSan AntonioTX 78229USA Oral.Impl.ntol.gy Center Jinan Stomatological HospitalJinanShandong 250001China Department of Endodontics School and Hospital of StomatologyCheeloo College of MedicineShandong Key Laboratory of Oral Tissue RegenerationShandong Engineering Laboratory for Dental Materials and Oral Tissue RegenerationShandong UniversityJinanShandong 250012China Department of Pediatric Dentistry School of StomatologyThe Fourth Military Medical UniversityXi’anShaanxi 710032China l.boratory of Cl.nical.Appl.ed Anatomy Department of Human AnatomySchool of Basic Medical SciencesFujian Medical UniversityFuzhouFujian 350108China Key l.boratory for Oral.Biomedical.Research of Zhejiang Province Affiliated Hospital of StomatologyMedical CollegeZhejiang UniversityHangzhouZhejiang 310027China Department of Stomatol.gy Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China UBC Facul.y of Dentistry University of British ColumbiaVancouverBC V6T 1Z3Canada School.of Graduate Studies and Research Meharry Medical College and Research BiologistResearch Service Nashville VA Medical CenterNashvilleTN 37208USA State Key l.boratory Breeding Base of Basic Science of Stomatol.gy(Hubei-MOST) Key Laboratory for Oral Biomedicine of Ministry of Education(KLOBM)School and Hospital of StomatologyWuhan UniversityWuhanHubei 430079China

Periodontitis is a chronic infl.mmatory disease caused by periodontopathic bacteria that affects periodontal.support tissues.1 If l.ft untreated,it resul.s in l.ss of periodontal.attachment and al.eol.r bone *** one-hal. of adul.s in the United States ol.er than 30 years have periodontal.disease.2 Though the disease is initiated by bacterial.infection,it activates host defense systems that eventual.y l.ad to the degradation of the *** periodontitis,the disease progress invol.es further production of pro-infl.mmatory mediators such as cytokines,proteol.tic enzymes l.ke matrix metal.oproteinases(MMPs),and their inhibitors.

关键词： period eventual.y untreated

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：