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Effec. of Progressive substitution of c.ment and Lime by Powdered Shells Used as a c.ring Agent for Dredged Soil in a Port Area

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Journal of Wuhan University of Tec.nology(Materials Sc.enc.) 2025年第1期 88-102页

作者：孙阳 WANG Faxin su Yaying LI Yiwei HE Feng c.llege of Harbour Coastal and Offshore Engineering Hohai University Huai'an Researc. Institute Hohai University Jiangsu Fangyang Industrial Investment c.rp. Ltd.

This study aimed to address the c.allenges of solid waste utilization,c.st reduc.ion,and c.rbon reduc.ion in the treatment of deep-dredged soil at Xuwei Port in Lianyungang c.ty of *** researc. in this area was ***,a c.ring agent made from powdered shells was used to solidify the dredged soil in *** employed laboratory orthogonal tests to investigate the physic.l and mec.anic.l properties of the powdered shell-based c.ring *** was c.llec.ed by c.nduc.ing experiments to assess the role of powdered shells in the c.ring proc.ss and to determine the optimal ratios of powdered shells to solidified soil for different *** development of strength in solidified soil was studied in both seawater and pure water *** study revealed that the strength of the solidified soil was influenc.d by the substitution rate of powdered shells and their interac.ion with *** c.ment c.ntent had a positive effec. on *** high-strength solidified soil,the rec.mmended ratio of wet soil:c.ment:lime:powdered shells were 100:16:4:4,while for low-strength solidified soil,the rec.mmended ratio was 100:5.4:2.4:***,under appropriate c.nditions,improved short-term strength by promoting the formation of expansive ettringite minerals that c.ntributed to c.mentation and *** findings suggest that the c.mbination of c.ment and powdered shells is synergistic.positively affec.ing the strength of solidified *** rec.mmended ratios provide prac.ic.l guidanc. for ac.ieving desired strength levels while c.nsidering fac.ors suc. as c.st and c.rbon *** role of seawater in enhanc.ng short-term strength through c.ystal formation is noteworthy and c.n be advantageous for c.rtain *** c.nc.usion,this researc. demonstrates the potential of using a powdered shell-based c.ring agent for solidifying dredged soil in an environmentally friendly and c.st-effec.ive *** rec.mmended ratios for different str

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A smooth c.-ordination c.ntrol for a hybrid autonomous power system （HAPS） with battery energy storage （BES）

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Frontiers in Energy 2015年第1期9卷 31-42页

作者： c. K. ARAVINDI c. NAGAMANI G. SARAVANA ILANGO Department of Elec.ric.l and Elec.ronic. Engineering National Instituteof Technology Tiruchirappalli 620015 India Department of Elec.ric.l and Elec.ronic. Engineering National Instituteof Technology Trichy 620015 India

The standalone hybrid power system c.nstitu- tes a sync.ronous generator driven by a diesel engine, renewable energy sourc. （wind） apart from a battery energy storage system. A c.herent c.ntrol strategy to regulate the voltage and frequenc. of the standalone grid is proposed in this paper. The system is simulated using Matlab/Simulink for preliminary validation and further tested on a laboratory prototype whic. involves a TMS320LF2407A DSP c.ntroller to digitally implement the c.ntrol strategy. The dynamic.behavior of the system is perused through the direc. c.nnec.ion of an induc.ion mac.ine. The c.ntrol strategy is verified for step c.anges in load and variation in wind power.

关键词： standalone hybrid power system batteryenergy storage system (BESS) power c.nversion

Determination of surfac. struc.ure and the depth profile of silic. glass by infrared spec.rosc.py

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光学精密工程 2005年第4期13卷 413-420页

作者： c. Z. Tan Laboratory of Solid State Mic.ostruc.ure and Department of Materials Sc.enc. and Engineering Nanjing University 210093 Nanjing China Institut für Mineralogie Freie Universitt Berlin 14195 Berlin Germany

The surfac. struc.ure and properties are different from those of the bulk, depending on the substrate materials and deposition c.ndition, and playing an important role in prec.se optic.l c.mponents. The c.nventional spec.rosc.pic.methods to monitor the surfac. struc.ure are restric.ed only in several layers of molec.les. It is known that the penetration depth of the inc.dent light inc.eases with its wavelength and dec.eases with the angle of inc.denc.. Thus infrared spec.rosc.py provides a powerful means for determination of surfac. struc.ure and the depth profile up to mic.ometers. By rec.rding the reflec.ion spec.ra at different angles of inc.denc., the surfac. struc.ure and its depth profile c.n be monitored suc.essively. Further, the inc.dent field has the subc.mponents parallel and perpendic.lar to the surfac., whic. exc.te the transverse and longitudinal optic.modes, respec.ively. c.ange of the polarization direc.ion of the inc.dent light provides a prac.ic.l func.ion to study anisotropic.property of the surfac. and the interac.ion between the transverse and longitudinal optic.modes. In this work, infrared spec.rophotometer was applied to investigate the depth profile in mic.ostruc.ure of silic. glass. c.mbining with the glass fiber system, this tec.nique c.n be used for in-situ c.ntrol of the deposition proc.ss. In c.mparing with ellipsometry, this method reveals both struc.ural and c.nstitutional information.

关键词：硅石光谱红外线表面结构光学材料

Tri-direc.ional shaking table tests of vibration sensitive equipment with static.dynamic. interc.angeable-ball pendulum system

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Earthquake Engineering and Engineering Vibration 2010年第1期9卷 103-112页

作者： c.S. Tsai Yung-c.ang Lin Wen-Shin c.en H.c. su D G epartment of c.vil Engineering Feng Chia University Taichung Chinese Taipei Graduate Institute of c.vil and Hydraulic.Engineering Feng Chia University Taichung Chinese Taipei Department of Water Resourc.s Engineering and c.nservation Feng Chia University Taichung Chinese Taipei

Rec.ntly, the high-tec. industry has bec.me a key industry for ec.nomic.development in many c.untries. However, vibration sensitive equipment loc.ted in these industrial buildings is vulnerable during earthquakes, whic. may c.use huge ec.nomic.loss. In this study, an innovative isolator for safeguarding the vibration sensitive equipment, namely, the static.dynamic. interc.angeable^all pendulum system （SDI-BPS） is proposed and investigated to examine its protec.ive c.pability for the vibration sensitive equipment during earthquakes through a series of tri-direc.ional shaking table tests. The experimental results illustrate that the SDI-BPS isolator c.n provide signific.nt damping to rolling types of base isolation systems for reduc.ng the bearing displac.ment and size, and avoid the stress c.nc.ntration, whic. c.n c.use damage or sc.atc.es on the rolling surfac. of the isolator, to prolong its life span of servic.. The SDI-BPS isolator also provides exc.llent c.pability in protec.ing the vibration sensitive equipment and exhibits a stable behavior under long terms of servic. loadings and earthquakes.

关键词： ball pendulum system c.itic.l equipment base isolation vibration sensitive equipment base isolator passive c.ntrol earthquake engineering struc.ural c.ntrol

Effec. of different water supply on morphology, growth and physiologic.l c.arac.eristic. of Salix psammophila seedlings in Maowusu sandland, c.ina

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Journal of Environmental Sc.enc.s 2001年第4期13卷 411-417页

作者： Xiao, c.-W. Lab. Quantitative Vegetation Ec.l. Institute of Botany Chinese Academy of Sciences Beijing 100093 China

Response pattern was investigated for seedlings of Salix psammophila, a dominant shrub in Maowusu sandland, to the simulated prec.pitation c.ange by artific.ally c.ntrolling water supply at four levels. The growth c.arac.ers, in terms of plant height, stem diameter, total branc. number, total leaf number and area, total bifurc.tion ratio, total branc. lenght and branc. number, branc. lenght, leaf number and leaf area of eac. branc. order, and leaf, branc. and root biomass signific.ntly inc.eased when water supply inc.eased. That water supply had signific.nt effec. on biomass alloc.tion showed different investment pattern of biomass resourc. of the seedlings grown under different water supply treatments. Stomatal density of abaxial leaf surfac. dec.eased, and stomatal apparatus length and width of adaxial and abaxial leaf surfac. inc.eased with the inc.ease of water supply, while Stomatal density of adaxial leaf surfac. was not affec.ed by water supply. Water supply obviously affec.ed the diumal c.anges of photosynthetic.rate, and the photosynthetic.rate of the seedlings showed strongly midday depression grown under the 157.5 mm water supply, but not grown under higher water supply. Additionally the assimilation-light response c.rves and flouresc.nc. effic.enc. more showed that water supply improve photosynthesis c.pac.ty. Finally, S. psammophila seedlings stood out by their slow growth and relatively high investments in root growth in order to reduc. tissue losing rate and c.nsumption of water resourc. for keeping water balanc. under water stress. The seedlings that grown under ric. water supply did by their fast growth and relatively high investments in branc. and leaf growth in order to improve the power of c.pturing light energy for higher photosynthesis.

关键词： Biomass Fluoresc.nc. Morphology Photosynthesis Physiology Plants (botany) Prec.pitation (c.emic.l) Seed Tissue

职业使命感对大学生幸福感的影响及边界条件:一项元分析

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黑龙江高教研究 2025年第1期43卷 140-146页

作者：崔小雨李辉苏涛广东警官学院广东广州510230 中国人民公安大学北京100038 广东工业大学广东广州510520

为明晰职业使命感对大学生幸福感的影响及边界条件,基于29篇实证文献的44个独立研究、53个效应值、41819个独立样本,通过元分析方法对职业使命感与大学生幸福感的关系进行了系统量化综述。结果发现,就主效应而言,职业使命感对大学生幸... 详细信息

为明晰职业使命感对大学生幸福感的影响及边界条件,基于29篇实证文献的44个独立研究、53个效应值、41819个独立样本,通过元分析方法对职业使命感与大学生幸福感的关系进行了系统量化综述。结果发现,就主效应而言,职业使命感对大学生幸福感具有显著正向影响,且相较主观幸福感,职业使命感对大学生心理幸福感的影响更强。就边界条件而言,职业使命感对大学生幸福感的影响会因其所处地域、院校、年级而异:相较西方地域文化,职业使命感对东方地域文化下大学生幸福感、主观幸福感、心理幸福感的影响均更强;相较普通院校,职业使命感对行业特色院校大学生幸福感、主观幸福感、心理幸福感的影响均更强;相较高年级,职业使命感对低年级大学生心理幸福感的影响更强。

关键词：大学生职业使命感幸福感元分析调节效应

MULTI-FAc.LITY ORDERED MEDIAN PROBLEMS IN DIREc.ED NETWORKS

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Journal of Systems Sc.enc. & c.mplexity 2011年第1期24卷 61-67页

作者： Huajun TANG T. c. Edwin c.ENG c. T. NG Fac.lty of Management and Administration Macao University of Science and Technology Macao China Department of Logistic. and Maritime Studies The Hong Kong Polytechnic University Hong Kong China

This paper uses a finite dominating set （FDS） to investigate the multi-fac.lity ordered median problem （OMP） in a strongly c.nnec.ed direc.ed network. The authors first prove that the multi-fac.lity OMP has an FDS in the node set, whic. not only generalizes the FDS result provided by Kalc.ic., et al. （2002）, but also extends the FDS result from the single-fac.lity c.se to the multiple c.se, filling an important gap. Then, based on this FDS result, the authors develop an exac. algorithm to solve the problem. However, if the number of fac.lities is large, it is not prac.ic.l to find the optimal solution, bec.use the multi-fac.lity OMP in direc.ed networks is NP-hard. Henc., we present a c.nstant-approximation algorithm for the p-median problem in direc.ed networks. Finally, we pose an open problem for future researc..

关键词： Algorithms finite dominating sets multi-fac.lity ordered median problem pseudoequilibria.

On Sliding Fric.ion of PEEK Based c.mposite c.atings

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材料热处理学报 2004年第05B期25卷 1175-1179页

作者： c. Mateus c. c.ddet LERMPS - UTBM (Site de Sevenans) 90 010 Belfort Cedex FranceLERMPS - UTBM (Site de Sevenans) 90 010 Belfort Cedex France

Polyetheretherketone (PEEK) based c.mposite materials bec.me of great interest to applic.tions as bearing and slider materials due to their exc.llent tribologic.l performanc.. In present work, graphite and MoS2 (7%, wt) filled PEEK c.atings were prepared using serigraph tec.nique. Employing a uniform design experiment, the fric.ion behavior of the c.mposite c.atings was systematic.lly investigated under dry sliding c.nditions on a ball-on-disc.arrangement. The evolution mec.anism of c.ating fric.ion c.effic.ent was disc.ssed. c.rrelation of c.atings fric.ion c.effic.ent with sliding veloc.ty and applied load was ac.omplished using stepwise regression method. The results indic.te that fric.ion c.effic.ents of PEEK + MoS2 and PEEK + graphite c.ating dec.ease while inc.easing applied load. Moreover, fric.ion c.effic.ent of PEEK + MoS2 c.ating inc.eases with inc.easing sliding veloc.ty.

关键词： PEEK 滑动摩擦混合涂层聚醚醚酮累积概率逐步回归

The role of ions in plasma c.talytic.0}rbon nanotube growth： A review

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Frontiers of c.emic.l Sc.enc. and Engineering 2015年第2期9卷 154-162页

作者： Erik c. Neyts Researc. Group PLASMANT Department of Chemistry University of Antwerp Universiteitsplein 1 2610 Wilrijk-Antwerp Belgium

While it is well-known that the plasma- enhanc.d c.talytic.0}emic.l vapor deposition （PEc.D） of c.rbon nanotubes （c.Ts） offers a number of advantages over thermal c.D, the influenc. of the various individual c.ntributing fac.ors is not well understood. Espec.ally the role of ions is unc.ear, sinc. ions in plasmas are generally assoc.ated with sputtering rather than with growing a material. Even so, various studies have demonstrated the benefic.al effec.s of ion bombardment during the growth of c.Ts. This review looks at the role of the ions in plasma- enhanc.d c.T growth as deduc.d from both experimental and simulation studies. Spec.fic.attention is paid to the benefic.al effec.s of ion bombardment. Based on the available literature, it c.n be c.nc.uded that ions c.n be either benefic.al or detrimental for c.rbon nanotube growth, depending on the exac. c.nditions and the c.ntrol over the growth proc.ss.

关键词： plasma-enhanc.d c.emic.l vapor deposition(PEc.D) c.rbon nanotube (c.T) ion bombardment,defec. healing