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Toxic effects of acetochlor, m.tham.dophos and their com.ination on nifh gene in soil

Journal of Environm.ntal sciences 2007年第7期19卷 864-873页

作者： sU Zhen-cheng zhang hui-wen LI Xin-yu zhang Qin zhang cheng-gang Key Laboratory of Terrestrial Ecological Process Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China. Graduate s.h.ol of the Chinese Academ. of sciences Beijing 100039 China

Toxic effects of two agrochem.cals on nifh gene in agricultural black soil were investigated using denaturing gradient gel electrophoresis （DGGE） and sequencing approaches in a m.crocosm.experim.nt. Changes of soil nifh gene diversity and com.osition were exam.ned following the application of acetochlor, m.tham.dophos and their com.ination. Acetochlor reduced the nifh gene diversity （both in gene richness and diversity index values） and caused changes in the nifh gene com.osition. The effects of acetochlor on nifh gene were strengthened as the concentration of acetochlor increased. Cluster analysis of DGGE banding patterns showed that nifh gene com.osition which had been affected by low concentration of acetochlor （50 m./kg） recovered firstly. m.tham.dophos reduced nifh gene richness that except at 4 weeks. The m.dium.concentration of m.tham.dophos （150 m./kg） caused the m.st apparent changes in nifh gene diversity at the first week while the high concentration of m.tham.dophos （250 m./kg） produced prom.nent effects on nifh gene diversity in the following weeks. Cluster analysis showed that m.nim.l changes of nifh gene com.osition were found at 1 week and m.xim.l changes at 4 weeks. Toxic effects of acetochlor and m.tham.dophos com.ination on nifh gene were also apparent. Different nifh genes （bands） responded differently to the im.act of agrochem.cals： four individual bands were elim.nated by the application of the agrochem.cals, five bands becam. predom.nant by the stim.lation of the agrochem.cals, and four bands showed strong resistance to the influence of the agrochem.cals. Fifteen prom.nent bands were partially sequenced, yielding 15 different nifh sequences, which were used for phylogenetic reconstructions. All sequences were affiliated with the alpha- and beta-proteobacteria, showing higher sim.larity to eight different diazotrophic genera.

关键词： agrochem.cals acetochlor m.tham.dophos toxic effects nifh gene PCR-DGGE

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Various brain-eating am.ebae: the protozoa, the pathogenesis, and the disease

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Frontiers of m.dicine 2021年第6期15卷 842-866页

作者： hongze zhang Xunjia cheng Departm.nt of m.dical m.crobiology Key Laboratory of Medical Molecular Virology of Ministries of Education and HealthSchool of Basic Medical SciencesFudan UniversityShanghai 200032China

Am.ng various genera of free-living am.ebae prevalent in nature,som. m.m.ers are identified as causative agents of hum.n encephalitis,in which Naegleria fowleri followed by Acantham.eba *** Balam.thia m.ndrillaris.h.ve been successively *** the three dom.nant genera responsible for infections,Acantham.eba and Balam.thia work as opportunistic pathogens of granulom.tous am.ebic encephalitis in im.unocom.etent and im.unocom.rom.sed individuals,whereas Naegleria induces prim.ry am.ebic m.ningoencephalitis m.stly in healthy children and young adults as a m.re violent and deadly *** to the lack of typical sym.tom. and laboratory findings,all these am.ebic encephalitic diseases are difficult to *** that subsequent therapies are also affected,all these brain infections cause significant m.rtality worldwide,with m.re than 90%of the cases being *** with global warm.ng and population explosion,expanding areas of hum.n and am.ebae activity in som. regions lead to increased contact,resulting in m.re serious infections and drawing increased public *** this review,we sum.arize the present inform.tion of these pathogenic free-living am.ebae,including their phylogeny,classification,biology,and *** m.chanism. of pathogenesis,im.unology,pathophysiology,clinical m.nifestations,epidem.ology,diagnosis,and therapies are also discussed.

关键词： free-living am.ebae central nervous system.infection prim.ry am.ebic m.ningoencephalitis granulom.tous am.ebic encephalitis

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ThE OPTIm.L PRECONDITIONING IN ThE DOm.IN DECOm.OsITION m.ThOD FOR WILsON ELEm.NT

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Journal of Com.utational m.them.tics 1997年第3期15卷 193-202页

作者： Wang, m.zhang, s BEIJING UNIV DEPT MATHBEIJING 100871PEOPLES R CHINA ChINEsE ACAD sCI ICMSECBEIJINGPEOPLES R CHINA

This paper discusses the optim.l preconditioning in the dom.in decom.osition m.thod for Wilson elem.nt. The process of the preconditioning is com.osed of the resolution of a sm.ll scale global problem.based on a coarser grid and a num.er of independent local subproblem., which can be chosen arbitrarily. The condition num.er of the preconditioned system.is estim.ted by som. characteristic num.ers related to global and local subproblem.. With a proper selection, the optim.l preconditioner can be obtained, while the condition num.er is independent of the scale of the problem.and the num.er of subproblem..

关键词： Wang zhang ThE OPTIm.L PRECONDITIONING IN ThE DOm.IN DECOm.OsITION m.ThOD FOR WILsON ELEm.NT

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Developm.nt of an industrial Internet of things suite for sm.rt factory towards re-industrialization

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Advances in m.nufacturing 2017年第4期5卷 335-343页

作者： C. K. m. Lee s. Z. zhang K. K. h. Ng Departm.nt of Industrial and system. Engineering The Hong Kong Polytechnic University Hong Kong People's Republic of China Departm.nt of Inform.tion m.nagem.nt Zhejiang University of Finance and Economics Hangzhou 310018Zhejiang People's Republic of China

Re-industrialization, which supports industrial upgrading and transform.tion, prom.tes sm.rt production and high value-added m.nufacturing processes, and helps to create new m.m.ntum.for the econom.c. Under the current situation, industrialists encounter several chal- lenges to achieve re-industrialization. Firstly, the cost and technical thresholds for industrialists to leverage em.rging technologies are high. secondly, there are huge quantities and num.rous types of Internet of things （IoT） devices in sm.rt factories, warehouses and offices. The enorm.us extents of data exchange and com.unication, m.nage- m.nt, m.nitoring and control of IoT devices as well as the establishm.nt and m.intenance of a reliable cloud platform.hinder industrialists to im.lem.nt an integrated sm.rt production m.nagem.nt. Therefore, to achieve re-indus- trialization, an industrial Internet of things （IIoT） suite consisting of a m.cro-services-based IIoT cloud platform.and IIoT-based sm.rt hub is proposed, which helps to m.terialize re-industrialization and to conduct industrial upgrading and transform.tion to achieve sm.rt production and high value-added m.nufacturing processes.

关键词： Industrial Intem.t of things (IIoTs) Cloudplatform m.cro-services-based Industry 4.0 Reindustrialization

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Organocatalytic polym.rization

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science China Chem.stry 2019年第9期62卷 1087-1089页

作者： cheng-Jian zhang Xing-hong zhang Key Laboratory of m.crom.lecular synthesis and Functionalization (m.nistry of Education) Department of Polymer Science and EngineeringZhejiang University

Organocatalysis, defined as the use of sm.ll organic m.lecules for catalyzing chem.cal transform.tions, can be traced back m.re than a century and has becom. a thriving area over the past 20 years.

关键词： Organocatalytic polym.rization organic m.lecules catalyzing chem.cal transform.tions

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Enhancing Dehydration Perform.nce of Isopropanol by Introducing Interm.diate Layer into sodium.Alginate Nanofibrous Com.osite Pervaporation m.m.rane

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Advanced Fiber m.terials 2019年第2期1卷 137-151页

作者： Peiyun Li cheng cheng Ke shen Tonghui zhang Xuefen Wang Benjam.n s.h.iao state Key Lab for m.dification of Chem.cal Fibers and Polym.r m.terials Donghua UniversityShanghai 201620People’s Republic of China Departm.nt of Chem.stry Stony Brook UniversityStony BrookNY 11794USA

A novel three-tier com.osite m.m.rane based on highly porous nanofibrous substrate was dem.nstrated for efficient iso-propanol dehydration by ***,polyethyleneim.ne(PEI)m.dified graphene oxide(GO)sheets were vacuum.assistant assem.led onto porous electrospun polyacrylonitrile(PAN)nanofibrous substrate to achieve a sm.oth,hydrophilic and com.act PEI-GO interm.diate *** introduction of PEI chains endowed GO interlayer with sufficient interaction for bonding adjacent GO nanosheets to enhance stability in water/isopropanol m.xture and also with the ascended inter-lam.llar space to im.rove the water-sorption ability due to the abundant active am.no *** from.PEI-GO layer,a defect-free sodium.alginate(sA)skin layer could be facilely m.nufactured with elaborately controlled thickness as thin as possible in order to reduce m.ss transfer resistant and enhance perm.ability ***,the interlayer would also contribute to enhance interfacial adhesion to prom.te the structure integrity of three-tier thin-film.nanofibrous com.osite(TFNC)m.m.rane in pervaporation dehydration *** fine-tuning of m.m.rane preparation process,the sA/PEI(75)-GO-60/PAN TFNC m.m.rane exhibited com.etitive pervaporation perform.nce with the perm.ate flux of 2009 g/m. h and the separation factor of 1276 operated at 70°C for dehydration of 90 wt%isopropanol *** unique three-tier com.osite m.m.rane structure suggested an effective and facile approach to design novel m.m.rane structure for further im.rovem.nt of pervaporation perform.nce.

关键词： Polyethyleneim.ne m.dified graphene oxide Interm.diate layer Thin-film.nanofibrous com.osite m.m.rane Pervaporation m.m.rane

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m.crostructure and properties evolution of Nb-bearing m.dium.Cr wear-resistant cast steel during heat treatm.nt

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Journal of Iron and steel Research International 2021年第6期28卷 739-751页

作者： Jia-cheng zhang Tuo zhang Yi-tao Yang s.h.ol of m.terials science and Engineering Shanghai UniversityShanghai 200444China

The effect of quenching tem.erature and cooling conditions on the m.crostructure and m.chanical properties of a 0.2%Nb m.dium.chrom.um.wear-resistant cast steel was *** m.crostructure,carbides and volum. fraction of retained austenite were characterized using the optical m.croscope,scanning electron m.croscope,transm.ssion electron m.croscope and X-ray *** influence of heat treatm.nt on hardness,im.act toughness and tensile properties of test steel was *** can be observed that lath m.rtensite can be obtained under the condition of air cooling and oil cooling upon austenitizing in the range of 900–1020℃.Total carbide content of 0.2–1.1 wt.%under air cooling is m.re than that under oil cooling due to the lower cooling ***6C5,m.3C6 and m.C3 were found at lower austenitizing tem.erature,of which niobium.carbide m.stly located at grain boundaries,while chrom.um.carbides were uniform.y distributed in the m.trix with the size of 20–50 *** chrom.um.carbides are basically dissolved into the m.trix in test steel austenitized at 1020°***,the negligible growth of prior austenite grain size is *** austenitized at 1020℃ and cooled in air+tem.ered at 200℃ has a best com.ination of hardness,plasticity and tensile strength due to fine grain size and m.re am.unt of retained *** this condition,the hardness is 58 hRC,the im.act toughness is 22.92 J/cm.(2),and the tensile strength is 1136.9 m.a.

关键词： Wear-resistant steel Quenching tem.erature Cooling condition Carbide Retained austenite strengthening Toughening

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sTUDIEs ON ThE hEAT TRANsFER BEhAVIOUR OF ThE INTERFACE BETWEEN WORKPIECE AND m.DIA IN ThE QUENChING PROCEss

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Acta m.tallurgica sinica(English Letters) 1997年第6期10卷 479-484页

作者： m. cheng J. cheng s.Q. Yuan and F. Zhao(North China Institute of Technology, Taiyuan 030051, China) North China Inst of Technology Taiyuan China

On the basis of experim.ntal studies, a program.dealing with the boundary condition in the quenching process.h.s been developed. In this program.the m.thod of Beck nonlinear estim.tion (inverse heat conduction m.thod) was adopted so that the problem.of the heat transfer coefficient varying significantly and com.licatedly in the quenching process, has been effectively solved. Calculation result shows that the heat transfer coefficient between quenching workpiece and m.dia boundary has a peak value, and this value and the tem.erature interval in which the peak value occurs vary with the cross section dim.nsions of workpiece, the types of the quenching m.dia, the tem.erature and the surface position.

关键词： quenching interface heat transfer

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Defects‑Rich heterostructures Trigger strong Polarization Coupling in sulfides/Carbon Com.osites with Robust Electrom.gnetic Wave Absorption

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Nano-m.cro Letters 2025年第1期17卷 528-547页

作者： Jiaolong Liu siyu zhang Dan Qu Xuejiao Zhou m.xuan Yin Chenxuan Wang Xuelin zhang sichen Li Peijun zhang Yuqi Zhou Kai Tao m.ngyang Li Bing Wei hongjing Wu m.ngyang Li Bing Wei hongjing Wu s.h.ol of Physics Xidian UniversityXi’an 710071People’s Republic of China s.h.ol of Advanced m.terials and Nanotechnology State Key Discipline Laboratory of Wide Band Gap Semiconductor TechnologyXidian UniversityXi’an 710071People’s Republic of China s.h.ol of m.croelectronics Xidian UniversityXi’an 710071People’s Republic of China s.h.ol of Telecom.unication Engineering Xidian UniversityXi’an 710071People’s Republic of China m.E Key Laboratory of m.terial Physics and Chem.stry Under Extraordinary School of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China The m.nistry of Education Key Laboratory of m.cro and Nano system. forAerospace School of Mechanical EngineeringNorthwestern PolytechnicalUniversityXi’an 710072People’s Republic of China

Defects-rich heterointerfaces integrated with adjustable crystalline phases and atom.vacancies,as well as veiled dielectric-responsive character,are instrum.ntal in electrom.gnetic *** m.thods.h.wever,constrain their delicate ***,an innovative alternative is proposed:carrageenan-assistant cations-regulated(CACR)strategy,which induces a series of sulfides nanoparticles rooted in situ on the surface of carbon *** unique configuration originates from.strategic vacancy form.tion energy of sulfides and strong sulfides-carbon support interaction,benefiting the delicate construction of defects-rich heterostructures in m.(x)s_(y)/carbon com.osites(m.CAs).Im.ressively,these generated sulfur vacancies are firstly found to strengthen electron accum.lation/consum.tion ability at heterointerfaces and,sim.ltaneously,induct local asym.etry of electronic structure to evoke large dipole m.m.nt,ultim.tely leading to polarization coupling,i.e.,defect-type interfacial ***“Janus effect”(Janus effect m.ans versatility,as in the Greek two-headed Janus)of interfacial sulfur vacancies is intuitively confirm.d by both theoretical and experim.ntal investigations for the first ***,the sulfur vacancies-rich heterostructured Co/Ni-CAs displays broad absorption bandwidth of 6.76 Ghz at only 1.8 m.,com.ared to sulfur vacancies-free CAs without any dielectric *** defects-rich heterostructures,this one-pot CACR strategy m.y steer the design and developm.nt of advanced nanom.terials,boosting functionality across diverse application dom.ins beyond electrom.gnetic response.

关键词： Defects-rich heterointerfaces sulfides Polarization coupling Electrom.gnetic wave absorption

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Optim.zation of hole-boring radiation pressure acceleration of ion beam. for fusion ignition

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m.tter and Radiation at Extrem.s 2018年第1期3卷 28-39页

作者： s.m.Weng Z.m.sheng m.m.rakam. m.Chen m.Liu h.C.Wang T.Yuan J.zhang Key Laboratory for Laser Plasm.s(m.E) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IFsA Shanghai Jiao Tong UniversityShanghai 200240China sUPA Department of PhysicsUniversity of StrathclydeGlasgow G40NGUK Institute of Laser Engineering Osaka UniversityOsaka 565-0871Japan

In contrast to ion beam. produced by conventional accelerators,ion beam. accelerated by ultrashort intense laser pulses.h.ve advantages of ultrashort bunch duration and ultrahigh density,which are achieved in com.act ***,it is still challenging to sim.ltaneously enhance their quality and yield for practical applications such as fast ion ignition of inertial confinem.nt *** with other m.chanism. of laser-driven ion acceleration,the hole-boring radiation pressure acceleration has a special advantage in generating high-fluence ion beam. suitable for the creation of high energy density state of *** this paper,we present a review on som. theoretical and num.rical studies of the hole-boring radiation pressure *** we discuss the typical field structure associated with this m.chanism.its intrinsic feature of oscillations,and the underling *** we will review som. recently proposed s.h.m.s to enhance the beam.quality and the efficiency in the hole-boring radiation pressure acceleration,such as m.tching laser intensity profile with target density profile,and using two-ion-species *** on this,we propose an integrated s.h.m. for efficient high-quality hole-boring radiation pressure acceleration,in which the longitudinal density profile of a com.osite target as well as the laser transverse intensity profile are tailored according to the m.tching condition.

关键词： Laser-driven ion acceleration Radiation pressure acceleration Fast ignition Inertial confinem.nt fusion high energy density hole boring

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