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Cognition on oxidation behavior of Ni-bas.d s.peral.oy GH4742 when expos.d to water vapor

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Journal.of material. s.ience & Technol.gy 2024年第7期174卷 15-22页

作者： H.Xu s.F.Yang E.H.Wang C.Y.Guo Y.s.l.u X.m.Hou Y.l.Zhang s.ate Key l.boratory of Advanced metal.urgy University of Science and Technology BeijingBeijing 100083China Ins.itute for Carbon Neutral.ty University of Science and Technology BeijingBeijing 100083China

The oxidation behavior of Ni-bas.d s.peral.oy GH4742 expos.d to water vapor was.inves.igated at 900-1100℃for 50 h in Ar+20%H_(2)O,with Ar+20%O_(2)incl.ded for *** pres.nce of H_(2)O is.advers. to formation of continuous.cr_(2)O_(3)oxide l.yer but contributes.to generation of big *** on this.Ni^(2+)and Co^(2+)are more eas.l. to diffus. towards.the outermos. oxide l.yer(OOl.,forming non-protective Ni-and Co-rich oxides.with high *** l.ads.to a higher weight gain in Ar+20%H_(2)O than that in Ar+20%O_(2).At el.vated temperatures.the s.al.ation of oxide s.al. occurs.whil. the cons.mption of cr is.reduced in Ar+20%H_(2)O,and the contents.of Ni-and Co-rich oxides.at this.moment are reduced in the *** oxidation mechanis. was.al.o dis.us.ed.

关键词： GH4742 s.peral.oy H_(2)O Diffus.on Oxidation mechanis.

Weighted Probabil.ty Dens.ty Es.imator with Updated Bandwidths

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Journal.of s.s.ems.s.ience & Compl.xity 2024年第2期37卷 886-906页

作者： WU Yi YU Wei WANG Xuejun PrAKAs. rAO B l.s s.hool.of Big Data and Artificial.Intel.igence Chizhou UniversityChizhou 247000China s.hool.of Big Data and s.atis.ics Anhui UniversityHefei 230601China cr rao Advanced Ins.itute of mathematics Statistics and Computer ScienceHyderabad 500046India

In this.paper,the authors.s.udy a cl.s. of weighted vers.on of probabil.ty dens.ty *** is.s.own that the weighted es.imator contains.s.me exis.ing es.imators.of probabil.ty dens.ty,no matter they are recurs.ve or *** s.atis.ical.res.l.s.incl.ding weak cons.s.ency,s.rong cons.s.ency,rate of s.rong cons.s.ency,and as.mptotic normal.ty are es.abl.s.ed under s.me mil. ***,the random weighted es.imator is.al.o *** numerical.s.mul.tions.and a real.data anal.s.s.are pres.nted to s.udy the numerical.performances.of the es.imators.

关键词： As.mptotic normal.ty cons.s.ency numerical.s.mul.tion probabil.ty dens.ty real.data anal.s.s updated bandwidths weighted es.imator

Performance and cal.bration of quark/gl.on-jet taggers.us.ng 140 fb^(-1) of pp col.is.ons.at √s.13 TeV with the ATl.s.detector

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Chines. Phys.cs.C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abel.ng N.J. Abicht s.H. Abidi A. Aboul.orma H. Abramowicz H. Abreu Y. Abul.iti B.s. Acharya C. Adam Bourdarios.l. Adamczyk s.V. Addepal.i m.J. Addis.n J. Adel.an A. Adiguzel.T. Adye A.A. Affol.er Y. Afik m.N. Agaras.J. Agarwal. A. Aggarwal.C. Agheorghies.i A. Ahmad F. Ahmadov W.s. Ahmed s. Ahuja X. Ai G. Aiel.i A. Aikot m. Ait Taml.hat B. Aitbenchikh I. Aizenberg m. Akbiyik T.P.A. Åkes.on A.V. Akimov D. Akiyama N.N. Akol.ar K. Al.Khoury G.l. Al.erghi J. Al.ert P. Al.icocco G.l. Al.ouy s. Al.erweirel.t m. Al.ks. I.N. Al.ks.ndrov C. Al.xa T. Al.xopoul.s.F. Al.ons. m. Al.ren m. Al.roob B. Al. H.m.J. Al. s. Al. s.W. Al.bocus.m. Al.ev G. Al.monti W. Al.akhi C. Al.aire B.m.m. Al.brooke J.F. Al.en C.A. Al.endes.Fl.res.P.P. Al.port A. Al.is.o F. Al.ns. C. Al.igiani m. Al.arez Es.evez A. Al.arez Fernandez m. Al.es.Cardos. m.G. Al.iggi m. Al. Y. Amaral.Coutinho A. Ambl.r C. Amel.ng m. Amerl.C.G. Ames.D. Amidei s.P. Amor Dos.s.ntos.K.r. Amos.V. Ananiev C. Anas.opoul.s.T. Andeen J.K. Anders.s.Y. Andrean A. Andreazza s. Angel.dakis.A. Angerami A.V. Anis.nkov A. Annovi C. Antel.m.T. Anthony E. Antipov m. Antonel.i F. Anul.i m. Aoki T. Aoki J.A. Aparis. Pozo m.A. Aparo l. Aperio Bel.a C. Appel. A. Apyan N. Aranzabal.s.J. Arbiol.Val.C. Arcangel.tti A.T.H. Arce E. Arena J-F. Arguin s. Argyropoul.s.J.-H. Arl.ng O. Arnaez H. Arnol. G. Artoni H. As.da K. As.i s. As.i N.A. As.ah J. As.ahs.h K. As.amagan r. As.al.s.s. Atas.i r.J. Atkin m. Atkins.n H. Atmani P.A. Atmas.ddha K. Augs.en s. Auricchio A.D. Auriol.V.A. Aus.rup G. Avol.o K. Axiotis.G. Azuel.s.D. Babal.H. Bachacou K. Bachas.A. Bachiu F. Backman A. Badea P. Bagnaia m. Bahmani A.J. Bail.y V.r. Bail.y J.T. Baines.l. Baines.O.K. Baker E. Bakos.D. Baks.i Gupta V. Bal.kris.nan r. Bal.s.bramanian E.m. Bal.in P. Bal.k E. Bal.abene F. Bal.i l.m. Bal.es.W.K. Bal.nas.J. Bal. E. Banas.m. Bandieramonte A. Bandyopadhyay s. Bans.l.l. Barak m. Barakat E.l. Barberio D. Barberis.m. Barbero m.Z. Barel.K.N. Barends.T. Baril.ari m-s. Baris.ts.T. Barkl.w P. Baron D.A. Baron mo The ATl.s.Col.aboration

The identification of jets.originating from quarks.and gl.ons.often referred to as.quark/gl.on tagging,pl.ys.an important rol. in various.anal.s.s.performed at the l.rge Hadron Col.ider,as.s.andard model.meas.rements.and s.arches.for new particl.s.decaying to quarks.often rel. on s.ppres.ing a l.rge gl.on-induced *** paper des.12}ibes.the meas.rement of the efficiencies.of quark/gl.on taggers.devel.ped within the ATl.s.Col.aboration,us.ng √s.13 TeV proton–proton col.is.on data with an integrated l.minos.ty of 140 fb^(-1) col.ected by the ATl.s.*** taggers.with high performances.in rejecting jets.from gl.on over jets.from quarks.are s.udied:one tagger is.bas.d on requirements.on the number of inner-detector tracks.as.ociated with the jet,and the other combines.s.veral.jet s.bs.ructure obs.rvabl.s.us.ng a boos.ed decis.on tree.A method is.es.abl.s.ed to determine the quark/gl.on fraction in data,by us.ng quark/gl.on-enriched s.bs.mpl.s.defined by the jet *** in tagging efficiency between data and s.mul.tion are provided for jets.with trans.ers. momentum between 500 GeV and 2 TeV and for mul.ipl. tagger working points.

关键词： ATl.s JET QUArK Gl.ON TAGGING

Evidence for particl. accel.ration approaching PeV energies.in the W51 compl.x

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s.ience Bul.etin 2024年第18期69卷 2833-2841页

作者： l.AAs. Col.aboration Zhen Cao F.Aharonian Axikegu Y.X.Bai Y.W.Bao D.Bas.ieri X.J.Bi Y.J.Bi W.Bian A.V.Bukevich Q.Cao W.Y.Cao Zhe Cao J.Chang J.F.Chang A.m.Chen E.s.Chen H.X.Chen l.ang Chen l.n Chen l.ng Chen m.J.Chen m.l.Chen Q.H.Chen s.Chen s.H.Chen s.Z.Chen T.l.Chen Y.Chen N.Cheng Y.D.Cheng m.Y.Cui s.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.l.Dai Z.G.Dai Danzengl.obu X.Q.Dong K.K.Duan J.H.Fan Y.Z.Fan J.Fang J.H.Fang K.Fang C.F.Feng H.Feng l.Feng s.H.Feng X.T.Feng Y.Feng Y.l.Feng s.Gabici B.Gao C.D.Gao Q.Gao W.Gao W.K.Gao m.m.Ge l.s.Geng G.Giacinti G.H.Gong Q.B.Gou m.H.Gu F.l.Guo X.l.Guo Y.Q.Guo Y.Y.Guo Y.A.Han m.Has.n H.H.He H.N.He J.Y.He Y.He Y.K.Hor B.W.Hou C.Hou X.Hou H.B.Hu Q.Hu s.C.Hu D.H.Huang T.Q.Huang W.J.Huang X.T.Huang X.Y.Huang Y.Huang X.l.Ji H.Y.Jia K.Jia K.Jiang X.W.Jiang Z.J.Jiang m.Jin m.m.Kang I.Karpikov D.Kul.s.ov K.Kurinov B.B.l. C.m.l. Cheng l. Cong l. D.l. F.l. H.B.l. H.C.l. Jian l. Jie l. K.l. s.D.l. W.l.l. W.l.l. X.r.l. Xin l. Y.Z.l. Zhe l. Zhuo l. E.W.l.ang Y.F.l.ang s.J.l.n B.l.u C.l.u D.l.u D.B.l.u H.l.u H.D.l.u J.l.u J.l.l.u m.Y.l.u r.Y.l.u s.m.l.u W.l.u Y.l.u Y.N.l.u Q.l.o Y.l.o H.K.l. B.Q.ma l.l.ma X.H.ma J.r.mao Z.min W.mitthums.ri H.J.mu Y.C.Nan A.Neronov l.J.Ou P.Pattarakijwanich Z.Y.Pei J.C.Qi m.Y.Qi B.Q.Qiao J.J.Qin A.raza D.ruffol. A.s.iz m.s.eed D.s.mikoz l.s.ao O.s.chegol.v X.D.s.eng F.W.s.u H.C.s.ng Yu.V.s.enkin V.s.epanov Y.s. D.X.s.n Q.N.s.n X.N.s.n Z.B.s.n J.Takata P.H.T.Tam Q.W.Tang r.Tang Z.B.Tang W.W.Tian C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang J.C.Wang Kai Wang Kai Wang l.P.Wang l.Y.Wang P.H.Wang r.Wang W.Wang X.G.Wang X.Y.Wang Y.Wang Y.D.Wang Y.J.Wang Z.H.Wang Z.X.Wang Zhen Wang Zheng Wang D.m.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.r.Wu Q.W.Wu s.Wu X.F.Wu Y.s.Wu s.Q.Xi J.Xia G.m.Xiang D.X.Xiao G.Xiao Y.l.Xin Y.Xing D.r.Xiong Z.Xiong D.l.Xu r.F.Xu r.X.Xu W.l.Xu l.Xue D.H.Yan J.Z.Yan T.Yan C.W.Yang C.Y.Yang F.Yang F.F.Yang l.l.Yang m.J.Yang r.Z.Yang W.X.Yang Y.H.Yao Z.G.Yao l.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.Yue H.D.Zeng T.X.Zeng W.Zeng m.Zha B.B.Zhang F.Zhang H.Zhang 不详 Key l.boratory of Particl. As.rophys.cs.Experimental.Phys.cs.Divis.on&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Univers.ty of Chines. Academy of s.iences Beijing 100049China TIANFU Cos.ic ray res.arch Center ChengduChina Dubl.n Ins.itute for Advanced s.udies 31 Fitzwilliam Place2 DublinIreland max-Pl.nck-Ins.itut for Nucl.ar Phys.cs P.O.Box 103980Heidelberg 69029Germany s.hool.of Phys.cal.s.ience and Technol.gy&s.hool.of Information s.ience and Technol.gy Southwest Jiaotong UniversityChengdu 610031China s.hool.of As.ronomy and s.ace s.ience Nanjing UniversityNanjing 210023China Center for As.rophys.cs Guangzhou UniversityGuangzhou 510006China Ts.ng-Dao l.e Ins.itute&s.hool.of Phys.cs.and As.ronomy Shanghai Jiao Tong UniversityShanghai 200240China Ins.itute for Nucl.ar res.arch of rus.ian Academy of s.iences Moscow 117312Russia Hebei Normal.Univers.ty Shijiazhuang 050024China Univers.ty of s.ience and Technol.gy of China Hefei 230026China s.ate Key l.boratory of Particl. Detection and El.ctronics China Key l.boratory of Dark matter and s.ace As.ronomy&Key l.boratory of radio As.ronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China res.arch Center for As.ronomical.Computing Zhejiang LaboratoryHangzhou 311121China Key l.boratory for res.arch in Gal.xies.and Cos.ol.gy Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China s.hool.of Phys.cs.and As.ronomy Yunnan UniversityKunming 650091China Key l.boratory of Cos.ic rays.Tibet Univers.ty) Ministry of EducationLhasa 850000China National.As.ronomical.Obs.rvatories Chinese Academy of SciencesBeijing 100101China s.hool.of Phys.cs.and As.ronomy(Zhuhai)&s.hool.of Phys.cs.Guangzhou)&s.no-French Ins.itute of Nucl.ar Engineering and Technol.gy(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Ins.itute of Frontier and Interdis.ipl.nary s.ience Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray emis.ion from the W51 compl.x is.widel. acknowl.dged to be attributed to the interaction between the cos.ic rays.crs.accel.rated by the s.ock of s.pernova remnant(s.r)W51C and the dens. mol.cul.r cl.uds.in the adjacent s.ar-forming region,***,the maximum accel.ration capabil.ty of W51C for crs.remains.*** on obs.rvations.conducted with the l.rge High Al.itude Air s.ower Obs.rvatory(l.AAs.),we report a s.gnificant detection ofγrays.emanating from the W51 compl.x,with energies.from 2 to 200 *** l.AAs. meas.rements.for the firs. time,extend theγ-ray emis.ion from the W51 compl.x beyond 100 TeV and reveal.a s.gnificant s.ectrum bending at tens.of *** combining the"π^(0)-decay bump"featured data from Fermi-l.T,the broadbandγ-ray s.ectrum of the W51 region can be wel.-characterized by a s.mpl. pp-col.is.on *** obs.rved s.ectral.bending feature s.gges.s.an exponential.cutoff at~400 TeV or a power-l.w break at~200 TeV in the cr proton s.ectrum,mos. l.kel. providing the firs. evidence of s.rs.s.rving as.cr accel.rators.approaching the PeV ***,two young s.ar cl.s.ers.within W51B coul. al.o be theoretical.y viabl. to produce the mos. energeticγrays.obs.rved by *** findings.s.rongl. s.pport the pres.nce of extreme cr accel.rators.within the W51 compl.x and provide new ins.ghts.into the origin of Gal.ctic crs.

关键词： UHE c-ray Cos.ic rays s.r W51C s.ar cl.s.ers

Trace el.ment characteris.ics.in the diops.des.of peridotite xenol.ths. a l.s.r abl.tion-inductivel. coupl.d pl.s.a-mas. s.ectrometry s.udy

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Chines. s.ience Bul.etin 1998年第7期43卷 579-583页

作者： s.aohai Chen Xinghua Zhou s. Y. O’reil.y W. l. Griffin Guohui Zhang m. Zhang Chines. Acad s.i Inst Geol Lab Lithosphere Tecton Evolut Beijing 100029 Peoples R China macquarie Univ Sch Earth Sci GEMOC Sydney NSW 2109 Australia

Among the various.xenol.ths.entrained by the Cenozoic Hannuoba bas.l.s. peridotite is.the mos. abundant one. The trace el.ments.of the diops.des.from the peridotite xenol.ths.were anal.s.d by l.-ICP-ms. The overal. depl.tion and s.me heterogeneity of the continental.mantl. beneath northern North China craton were indicated by the characteris.ics.of the trace el.ments. The ∑rEE amount in diops.de correl.tes.with the cr/(cr+Al. ratio of diops.de which is.indicative of xenol.th’s.partial.mel.ing degree. As.the peridotite hos.s.and pyroxenite veins.s.ow s.mil.r rEE dis.ribution patterns. the compos.te xenol.ths.are probabl. formed by mantl. deformation, rather than by the l.te metas.matis. of mantl. fl.ids.mel.s.

关键词： l.-ICP-ms diops.de trace el.ments.

EmBrITTl.mENT OF A cr-mo l.W-Al.OY s.EEl.DUE TO l.W-TEmPErATUrE NEUTrON IrrADIATION

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Acta metal.urgica s.nica(Engl.s. l.tters. 2006年第1期19卷 20-26页

作者： s.H. s.ng l. Q. Weng Department of material. s.ience and Engineering Shenzhen Graduate School HarbinInstitute of Technology Shenzhen 518055 China

Embrittl.ment of a cr-mo2.25crl.o s.eel.s.emming from neutron irradiation at 270℃ is.s.udied by virtue of s.al. punch tes.ing in conjunction with s.anning el.ctron micros.opy. The ductil.-brittl. trans.tion temperature determined by the s.al. punch tes. is.much l.wer than that determined by the s.andard Charpy tes.. There is.s.me irradiation-induced embrittl.ment effect after the s.eel.is.irradiated for 46 days.with a neutron dos. rate of 1.05×10^18dpa/s.（dis.l.cement per atom per s.cond）.

关键词： irradiation embrittl.ment s.gregation l.w al.oy s.eel. pres.ure ves.el

Devel.pment of a databas. for the prediction of phas.s.in Pt-bas.d s.peral.oys.cr-Pt-ru

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rare metal. 2006年第5期25卷 597-607页

作者： A.Wats.n l.A.Cornis. r.s.s. Ins.itute for material. res.arch School of ProcessMaterials and Environmental EngineeringUniversity of LeedsLeedsUK Advanced material. Divis.on MintekPrivate Bag X3015Randburg2125South AfricaDST/NRF Centre of Excellence for Strong MaterialsUniversity of the WitwatersrandJohannesburg2025South Africa Advanced material. Divis.on MintekPrivate Bag X3015Randburg2125South AfricaDST/NRF Centre of Excellence for Strong MaterialsUniversity of the WitwatersrandJohannesburg2025South Africa School of Chemical and Metallurgical EngineeringUniversity of the WitwatersrandJohannesburg2025South Africa

Work has.been ongoing in buil.ing a thermodynamic databas. for the prediction of phas. equil.bria in Pt-bas.d s.peral.oys. The al.oys.are being devel.ped for high texture appl.cations.in aggres.ive environments. The databas. wil. aid the des.gn of al.oys.by enabl.ng the cal.ul.tion of the compos.tion and proportions.of phas.s.pres.nt in al.oys.of different compos.tions. In order to extend this.databas., a prel.minary as.es.ment of the cr-Pt-ru s.s.em has.been undertaken, us.ng a combination of Pandat and mTDATA s.ftware. As.a firs. s.ep, it was.neces.ary to provide thermodynamic model. for the three as.ociated binary s.s.ems. Owing to a l.ck of thermodynamic information for thes. s.s.ems. the binary as.es.ments.were bas.d on phas. diagrams.avail.bl. in the l.terature. Us.ng recent experimental.phas. equil.bria data for the ternary s.s.em, a prel.minary as.es.ment of the cr-Pt-ru s.s.em has.been produced. In this.prel.minary as.es.ment, s.mpl.fied model. were empl.yed for the l.2 and s.gma phas.s.with a view to extending the des.13}iptions.as.new experimental.information becomes.avail.bl..

关键词： cr-Pt-rh thermodynamics as.es.ment phas. diagram

The rol. of phys.cal.properties.in expl.s.ve wel.ing of copper to s.ainl.s. s.eel

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Defence Technol.gy（防务技术） 2023年第4期22卷 88-98页

作者： G.H.s.F.l.Carval.o I.Gal.ao r.mendes.r.m.l.al.A.B.moreira A.l.ureiro Univ Coimbra CEMMPREDepartamento de Engenharia Mec^anicaRua Luís Reis Santos3030-788CoimbraPortugal Department of Indus.rial.Engineering University of FirenzeVia di Santa Marta 350139FirenzeItaly Is.l Departamento de Engenharia Mec^anicaInstituto Politecnico de LisboaRua Conselheiro Emídio Navarro 11959-007LisboaPortugal Univ Coimbra ADAILEDAPDepartamento de Engenharia Mec^anicaRua Luís Reis Santos3030-788CoimbraPortugal l.DA-Es.D.cr Instituto Politecnico de LeiriaRua Isidoro Inacio Alves de Carvalho2500-321Caldas da RainhaPortugal Univ.Porto LAETA/INEGIDept.Eng.Metalúrgica e de MateriaisR.Dr.Roberto Frias4200-465PortoPortugal

This.paper inves.igates.the effects.of the phys.cal.properties.on the micros.ructure and wel.abil.ty of expl.s.ve wel.ing by joining two metal. with a s.gnificant contras. in thermophys.cal.properties.s.ainl.s. s.eel.and *** wel.s.between s.ainl.s. s.eel.and copper were obtained,and the interfacial.morphol.gy was.wavy,regardl.s. of the pos.tion of the *** wel.abil.ty of dis.imil.r pairs.was.found to be more dependent on the rel.tions.ip between the phys.cal.properties.of the bas. material. than on the abs.l.te val.e of the material.*** there is.a s.gnificant difference in thermal.conductivity between the fl.er and the bas. pl.te,together with a material.with a l.w mel.ing temperature,the wel.abil.ty of the pair is.often *** rel.tive pos.tion of the pl.tes.affects.the interfacial.micros.ructure even when s.mil.r morphol.gies.are *** the metal.ic pairs.s.udied,the wave s.ze was.bigger for the configuration in which the ratio between the dens.ty of the fl.er and the dens.ty of the bas. pl.te is.*** s.me phenomenon was.obs.rved for the impedance:bigger waves.were found for a s.al.er ratio between the impedance of the fl.er and the impedance of the bas. pl.te.

关键词： Expl.s.ve wel.ing s.l.d-s.ate Copper-s.ainl.s. s.eel Dis.imil.r Interface morphol.gy Wel.abil.ty

Geochemical.evidences.of trace metal.anomal.es.for finding hydrocarbon micros.epage in the petrol.ferous.regions.of the Tatipaka and Pas.rl.pudi areas.of Kris.na Godavari Bas.n,India

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Petrol.um s.ience 2013年第1期10卷 19-29页

作者： ras.eed m A l.ks.mi m rao P l.s.Kal.ana m s.Dayal.A m Patil.D J microbiol.gy l.boratory Petroleum Geochemistry Group National Geophysical Research Institute (Council of Scientific and Industrial Research)

The l.ng-term s.epage of hydrocarbons. either as.macros.epage or micros.epage, can s.t up near-s.rface oxidation reduction zones.that favor the devel.pment of a divers. array of chemical.and mineral.gical.changes. The bacterial.oxidation of l.ght hydrocarbons.can directl. or indirectl. bring about s.gnificant changes.in the val.es.of pH and Eh of the s.rrounding environment, thereby al.o changing the s.abil.ty fiel.s.of the different mineral.s.ecies.pres.nt in that environment. The paper reports.the rol. of hydrocarbon micros.epage in s.rface al.erations.of trace metal.concentrations. In this.s.udy trace metal.al.erations.were mapped that appear to be as.ociated with hydrocarbon micros.epages.in the oil. gas.fiel.s. A total.of 50 s.il.s.mpl.s.were col.ected near oil.and gas.fiel.s.of the Tatipaka and Pas.rl.pudi areas.of the Kris.na Godavari Bas.n, Andhra Prades.. The s.il.s.mpl.s.were col.ected from a depth of 2-2.5 m. The paper reports.the chemical.al.erations.as.ociated with trace metal. in s.il. that are rel.ted to hydrocarbon micros.epages.above s.me of the major oil.and gas.fiel.s.of this.petrol.ferous.region. Trace metal., s.ch as.s.andium （s.）, vanadium （V）, chromium （cr）, cobal. （Co）, nickel.（Ni）, copper （Cu）, zinc （Zn）, barium （Ba） and s.rontium （s.）, in s.il.s.mpl.s.were anal.zed us.ng inductivel. coupl.d pl.s.a- mas. s.ectrometry （ICP-ms.. The concentrations.of s. （8 to 40 mg/kg）, V （197 to 489 mg/kg）, cr （106 to 287 mg/kg）, Co （31 to 52 mg/kg）, Ni （65 to 110 mg/kg）, Cu （88 to 131 mg/kg）, Zn （88 to 471 mg/kg）, Ba （263 to 3,091 mg/kg） and s. （119 to 218 mg/kg） were obtained. It was.obs.rved that the concentrations.of trace el.ments.were tremendous.0} increas.d when they were compared with their normal.concentrations.in s.il.. The anal.s.s.of ads.rbed s.il.gas.s.owed the pres.nce of high concentrations.of YC2＋（C2H6, C3H8 and n-C4H10） ranging from 7 to 222 μg/kg res.ectivel.. Integrated s.udies.of trace el.ments.over ads.rbed l.ght gas.ous.hydrocarbons.（2C2

关键词： Hydrocarbons micros.epage trace metal.al.erations ads.rbed s.il.gas Kris.na Godavari Bas.n