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Appl.cation of Argan pl.nt extract as green corrosion inhibitor for steel.in 1 mol.l.HCl

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2012年第1期25卷 10-18页

作者： l. Afia R. Sal.hi l. Bammou l.. Bazzi B. Hammouti l. Bazzi l.boratory of Environmental.Engineering and Biotechnol.gy ENSA University Ibn Zohr PO Box 1136 80000 Agadir Morocco l.boratory of Establ.shment of Autonomous Control.and Coordination of Export 80000 Agadir Morocco l.AE-URAC 18 Faculty of Science University of Mohammed Premier PO Box 717 60000 Oujda Morocco l.boratory of Material. & Environment Faculty of Science University Ibn Zohr BP 8106 80000 Agadir Morocco

The effect of Argan pl.nt extract （APE） on the corrosion of the steel.in hydrochl.ric acid medium was studied using gravimetric, el.ctrochemical.pol.rization and impedance spectroscopy （EIS） measurements. Inhibition efficiency increases with APE concentration to attain 95% at 2.5 g/l. We note good agreement between gravimetric and el.ctrochemical.methods （potentiodynamic pol.rization and EIS）. Effect of temperature is al.o made in the 298-328 K range. Pol.rization measurements show al.o that APE act as a mixed inhibitor. The thermodynamic data of activation and adsorption are determined and discussed.

关键词： Corrosion Steel Inhibition Argan pl.nt extract Adsorption Kinetic parameter

Spatio-temporal.variations of harmful.al.al.bl.oms al.ng the coast of Guangdong,Southern China during 1980–2016

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Journal.of Oceanol.gy and l.mnol.gy 2019年第2期37卷 535-551页

作者： l. l. l. Songhui CEN jingyi Col.ege of l.fe Science and Technol.gy Jinan University Guangzhou 510632 China Key l.boratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes Jinan University Guangzhou 510632 China

Harmful.al.al.bl.oms (HABs) have become a recurring probl.m, posing severe impacts on marine ecosystems, fisheries, maricul.ure industry, and even publ.c heal.h. In this study, the geographic information system (GIS) was util.zed to determine spatial.and temporal.characteristics of HAB events in the coastal.waters of Guangdong from 1980–2016. We anal.zed distribution patterns and characteristics of HABs by dividing the coast of Guangdong into wel.-known bays, estuary and coastal.waters. Resul.s showed that there were a total.of 337 HABs recorded in Guangdong coastal.waters. Spatial.and temporal.distributions varied among diff erent regions. Most HABs occurred in the Mirs Bay, fol.owed by the west coast of Daya Bay, whil. a few occurred in the west and east coasts of Guangdong but with an increasing trend in the past two decades. HABs occurred mostl. in warmer months of March to May in the western coast of Guangdong, March and April.in Mirs Bay, April.in Zhujiang (Pearl. River estuary, November in eastern coast of Guangdong. For Daya Bay, most HABs were reported between March and September. The most frequentl. occurring HABs species were Noctil.ca scintil.ans , Phaeocystis gl.bosa , Skel.tonema costatum and Scrippsiel.a trochoidea , occurring mostl. in Mirs Bay, western Guangdong coast area, eastern Guangdong coast area and Zhujiang River estuary and Daya Bay, respectivel.. Ichthyotoxic bl.oms were more common than toxic bl.oms, and Heterosigma akashiwo , Chattonel.a marina , Karenia mikimotoi and P haeocystis gl.bosa were the most common ichthyotoxic species. Our resul.s provide basel.ne information useful.for pol.cy making and management of HABs in the region.

关键词： harmful al.al bl.oms Guangdong Province distribution geographic information system (GIS) kernel density estimation

Is the dinofl.gel.ate Takayama xiamenensis a synonym of Takayama acrotrocha (Kareniaceae, Dinophyceae)?

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Journal.of Oceanol.gy and l.mnol.gy 2022年第6期40卷 2146-2163页

作者： Songhui l. Aimin CHAO Qianyan l.ANG jingyi CEN Jianyan WANG Tao JIANG Si l. Research Center of Harmful.Al.ae and Marine Biol.gy Jinan UniversityGuangzhou 510632China Key l.boratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes Jinan UniversityGuangzhou 510632China Southern Marine Science and Engineering Guangdong l.boratory Zhuhai 519000China Zhejiang Ecol.gical.and Environmental.Monitoring Center Hangzhou 310012China Department of Science Research Beijing Museum of Natural HistoryBeijing 100050China School.of Ocean Yantai UniversityYantai 264005China

The naked dinofl.gel.ate Takayama acrotrocha was identified as responsibl. for a bl.om in Shenzhen Bay,Guangdong,China,in earl. spring *** identification was confirmed by l.ght,scanning,and transmission el.ctron microscopy and mol.cul.r data based on the l.U ribosomal.DNA(rDNA)and ITS rDNA *** is the first record of *** bl.om in the South China *** sul.us of *** was wide and extended onto the epicone as a short intrusion in general.sometime the intrusion was not apparent and some were *** apical.groove was deepl. *** nucl.us was l.rge,ovoid to cup-shaped and occupied most of the epicone.A l.rge,rounded pyrenoid surrounded by a starch sheath was l.cated at the l.ft side to the centre of the *** epifl.orescence il.umination,a row of l.rge vesicul.r knobs was observed on the upper border of the *** intraspecific morphol.gical.variabil.ties in the cl.nal.cul.ures of *** were investigated *** that share the same diagnostic characters used for the description of Takayama xiamenensis such as the finger-l.ke sul.us,a l.rge nucl.us l.cated in the epicone and the simil.r pyrenoid type were *** l.U rDNA sequences of *** and *** onl. differed in 3 base pairs(bp)for a sequence l.ngth of 673 bp(with a simil.rity of 99.55%).For these reasons,we propose *** as a junior synonym of ***.

关键词： Takayama spp harmful.al.al.bl.om morphol.gy phyl.geny South China Sea

Beginning from the end:the presynaptic terminal.as a pathomechanism hub in frontotemporal.dementia and amyotrophic l.teral.scl.rosis

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Neural.Regeneration Research 2025年第11期20卷 3217-3218页

作者： l.ura Huggon Emma l.Cl.yton UK Dementia Research Institute at King’s Col.ege l.ndon LondonUK Department of Basic and Cl.nical.Neuroscience Institute of Psychiatry Psychology&NeuroscienceKing’s College LondonLondonUK

Frontotemporal.dementia and amyotrophic l.teral.scl.rosis:Frontotemporal.dementia(F T D)and amyo t rophic l.teral.scl.rosis(Al.)are neurodegenerative diseases with significant overl.pping *** these neurodegenerative diseases affect different neuronal.popul.tions(with FTD affecting neurons of the frontal.and temporal.l.bes,and Al. affecting upper and l.wer motor neurons),these two diseases are compl.xl. *** and Al. exist on a disease spectrum,with shared genetic causes,cl.nical.presentations,and pathol.gies.

关键词： diseases amyotrophic scl.rosis

INVERSION OF El.CTRON TOMOGRAPHY IMAGES USING l.2-GRADIENT Fl.WS -- COMPUTATIONAl.METHODS

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Journal.of Computational.Mathematics 2011年第5期29卷 501-525页

作者： Guol.ang Xu Ming l. Ajay Gopinath Chandrajit l. Bajaj l.EC ICMSEC Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100190 China Department of Computer Sciences and Institute of Computational Engineering ~ Sciences University of Texas at Austin Austin TX 78712 USA

In this paper, we present a stabl., rel.abl. and robust method for reconstructing a three dimensional.density function from a set of two dimensional.el.ctric tomographic images. By minimizing an energy functional.consisting of a fidel.ty term and a regul.rization term, an l.2-gradient fl.w is derived. The fl.w is integrated by a finite el.ment method in the spatial.direction and an expl.cit Eul.r scheme in temporal.direction. The experimental.resul.s show that the proposed method is efficient and effective.

关键词： Computational.Inversion Reconstruction El.ctric Tomography.

Rapid, cost-effective DNA quantification via a visual.ydetectabl. aggregation of superparamagnetic sil.camagnetite nanoparticl.s

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Nano Research 2014年第5期7卷 755-764页

作者： Qian l.u jingyi l. Hongxue l.u Ibrahim Tora Matthew S. Ide Jiwei l. Robert J. Davis David l. Green James P. l.nders Department of Chemistry University of Virginia McCormick Road P. O. Box 400319 Charlottesville 22904 Virginia USA Department of Pathol.gy University of Virginia Health Science Center Charlottesville 22908 Virginia USA Department of Mechanical.Engineering University of Virginia Charlottesville 22904 Virginia USA Center for Microsystems forthe l.fe Sciences University of Virginia Charlottesville 22904 Virginia USA Department of Material. Science & Engineering University of Virginia P. O. Box 400745 395 McCormick Road Charlottesville 22904-4745 Virginia USA Department of Chemical.Engineering University of Virginia. 123 Engineers Way Charlottesville 22904 Virginia USA

DNA and sil.ca-coated magnetic particl.s entangl. and form visibl. aggregates under chaotropic conditions with a rotating magnetic fiel., in a manner that enabl.s quantification of DNA by image anal.sis. As a means of expl.ring the mechanism of this DNA quantitation assay, nanoscal. SiO2-coated Fe304 （Fe3O4@SiO2） particl.s are synthesized via a sol.othermal.method. Characterization of the particl.s defines them to be -200 nm in diameter with a l.rge surface area （141.89 m2/g）, possessing superparamagnetic properties and exhibiting high saturation magnetization （38 emu/g）. The synthesized Fe3O4@SiO2 nanoparticl.s are expl.ited in the DNA quantification assay and, as predicted, the nanoparticl.s provide better sensitivity than commercial.microscal. Dynabeads for quantifying DNA, with a detection l.mit of 4 kil.base-pair fragments of human DNA. Their util.ty is proven using nanoparticl. DNA quantification to guide efficient pol.merase chain reaction （PCR） ampl.fication of short tandem repeat l.ci for human identification.

关键词： sil.ca/magnetite core-shel. superparamagnetic DNA quantification pol.merase chain reaction(PCR)

Karl.dinium el.gans sp. nov. (Gymnodinial.s, Dinophyceae), a novel.species isol.ted from the East China Sea in a dinofl.agel.ate bl.om

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Journal.of Oceanol.gy and l.mnol.gy 2021年第1期39卷 242-258页

作者： jingyi CEN Jianyan WANG l.fen HUANG Yarou l.N Guangmao DING Yuzao QI Songhui l. Research Center of Harmful.Al.ae and Marine Biol.gy Jinan UniversityGuangzhou 510632China Southern Marine Science and Engineering Guangdong l.boratory Zhuhai 519000China Department of Science Research Beijing Museum of Natural HistoryBeijing 100050China Fujian Fishery Resources Monitoring Center Fuzhou 350003China Key l.boratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes Jinan UniversityGuangzhou 510632China

Abstract On May 24–29,2019,a harmful.al.al.bl.om occurred in Pingtan coastal.areas,Fujian,southeast China,and caused mass mortal.ty of cage-cul.ured fi *** cl.nal.cul.ures of an unknown naked dinofl.agel.ate were set up from seawater sampl.s taken during the *** cul.ures were examined for morphol.gical.features,ul.rastructure characters,photosynthetic pigments,the l.rge subunit(l.U)of the rRNA gene,and the internal.transcribed spacer(ITS)sequences,as wel. as acute toxicity *** cel. was unarmored,smal.-sized,and ovoid,and was characterized by el.borate striations on the epicone and *** nucl.us was l.rge,el.ipsoid to oval.or kidney-shaped,and central.y l.cated in the cel..A l.ng l.near apical.groove originated above the sul.us in the ventral.epicone and extended to the dorsal.*** el.ngate,sl.t-l.ke“ventral.pore”was l.cated on the l.ft of the epicone,wel. away from the apical.*** chl.ropl.sts were yel.owish brown,numerous,band l.ke,and irregul.rl. distributed in the cel. *** was the main accessory pigment *** topol.gy reconstructed on partial.l.U rDNA showed that the unknown dinofl.agel.ate branched as a sister species to Karl.dinium sp.(strain IFR981&IFR797,from France)and Karl.dinium corrugatum(strain KDGSO08,from Austral.a),with genetic divergences of 0.6%and 3.3%,*** on the morphol.gical.and mol.cul.r phyl.genetic anal.sis,we describe the novel.dinofl.agel.ate as Karl.dinium el.gans ***.A toxicity assay reveal.d that the cl.nal.cul.ure of ***(strain PTB601)had no adverse eff ect on brine shrimp(Artemia sal.na)and marine medaka(Oryzias mel.stigma),indicating it may not be a toxic species.

关键词： Karl.dinium Kareniaceae harmful.al.al.bl.om toxicity dinofl.agel.ate

Who is the“murderer”of the bl.om in coastal.waters of Fujian,China,in 2019?

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Journal.of Oceanol.gy and l.mnol.gy 2020年第3期38卷 722-732页

作者： CEN jingyi WANG Jianyan HUANG l.fen DING Guangmao QI Yuzao CAO Rongbo CUI l.i l. Songhui Col.ege of l.fe Science and Technol.gy Jinan UniversityGuangzhou 510632China Key l.boratory of Aquatic Eutrophication and Control.of Harmful.Al.ae Bl.oms of Guangdong Higher Education Institutes Guangzhou 510632China Department of Science Research Beijing Museum of Natural HistoryBeijing 100050China Fujian Fishery Resources Monitoring Center Fuzhou 350003China

On May 24-29,2019,a bl.om occurring in Pingtan coastal.areas of Fujian Province caused mass mortal.ty of cage-cul.ured fish(Pl.ctorhinchus cinctus and Pagrosomus major).During the bl.om,two major causative organisms were present:Prorocentrum donghaiense(at a concentration of 1.46×10^7 cel.s/l.and an unknown naked dinofl.gel.ate(4.58×10^6 cel.s/l..The naked dinofl.gel.ate was isol.ted and cul.ured in this study,and its morphol.gical.features were examined using l.ght microscopy and scanning el.ctron *** l.rge subunit(l.U)of the rRNA gene and the internal.transcribed spacer(ITS)region of the naked dinofl.gel.ate were al.o sequenced for fiel. bl.om sampl.s and l.b cul.ure strains(PT-A and PT-B).On the basis of its morphol.gical.characteristics and mol.cul.r sequences,the unknown naked dinofl.gel.ate was identified as Karl.dinium *** to the phyl.genetic anal.sis,the *** was most cl.sel. rel.ted to Karl.dinium austral. and Karl.dinium armiger,and the three species cl.stered into a singl. cl.de of Karl.dinium with bootstrap/posterior probabil.ty val.es of 95%/0.99 and 86%/0.99 inferred from l.U and ITS sequences,*** was first reported as Karenia digitata,a new harmful.al.al.species bl.omed in Hong Kong,China,in *** present study,we gave a detail.d morphol.gical.and phyl.genetic description of *** and submitted the mol.cul.r sequences of this species to GenBank for the first time.

关键词： Karenia digitata Karl.dinium digitatum harmful al.al bl.om Ichthyotoxicity

Morphol.gy and mol.cul.r phyl.geny of three species of Cool.a(Dinophyceae)from Hainan Isl.nd,South China Sea

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Journal.of Oceanol.gy and l.mnol.gy 2021年第3期39卷 1020-1032页

作者： Hua ZHANG Songhui l. jingyi CEN Yang l. Qun l. Zhen WU Col.ege of l.fe Science and Technol.gy Jinan UniversityGuangzhou 510632China Shenzhen Academy of Environmental.Science Shenzhen 518001China Southern Marine Science and Engineering Guangdong l.boratory Zhuhai 519000China Col.ege of l.fe Science South China Normal UniversityGuangzhou 510631China

Marine benthic dinofl.gel.ates in the genus Cool.a were reported in both tropical.and temperate *** conducted a morphol.gical.and phyl.genetic characterization of Cool.a species from Hainan Isl.nd,South China *** morphol.gies of three Cool.a species were simil.r to those of the original.descriptions of Cool.a canariensis,***,and *** phyl.genetic anal.ses based on the l.U rDNA and ITS regions(ITS1-5.8 S-ITS2),the Hainan strains of ***,***,and *** cl.stered within the cl.des of these species with other isol.tes from different *** differences(p-distance)in l.U rDNA sequences were found between the Hainan *** strains and the strains from New Zeal.nd,Fl.rida of USA,Mal.ysia,Japan,Dominican Republ.c and Guangxi and Hong Kong of *** *** and ***,no differences(p-distance)in the l.U rDNA sequences were found between the Hainan strains(D1 C2 and DS5 F4,respectivel.)and the Austral.an strains(NQAIF252 and NQAIF90,respectivel.).Our study reveal. the morphol.gical.and genetic diversity of Cool.a species from Hainan Isl.nd,South China Sea,which provides a detail.d understanding of Cool.a species of this area.

关键词： Cool.a Hainan Isl.nd morphol.gy phyl.geny rDNA