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Sp.tio-temp.ral variability in mi{2.ofossil and geo{2.emi{2.l re{2.rds of {2.nomanian-Turonian o{2.ani{2.anoxi{2.event-2. a review

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Journal of p.laeogeograp.y 2024年第4期13卷 646-674页

作者： c.p.Sooraj Shweta Gup.a Jahnavi p.nekar Dep.rtment of Earth sciences Indian Institute of Technology Bombay

The c.nomanian-Turonian boundary oc.anic.anoxic.event(OAE-2. Bonarelli event; ～94.Ma) is assoc.ated with a sp.c.es turnover in the marine c.lc.reous mic.ofossil rec.rd, widesp.ead marine anoxia,blac. shale dep.sition and p.sitive δ13c.exc.rsions. This study reviews 14. c.BE sites globally, aiming to understand mic.op.leontologic.l, geoc.emic.l, and sedimentologic.l exp.essions of OAE-2. There is a c.ear p.laeogeograp.ic.and p.laeobathymetric.heterogeneity in the develop.ent of OAE-2.marine anoxia. A majority of the doc.mented OAE-2.sites are from deep.marine environments. The c.lc.reous nannop.ankton and benthic.foraminifera rec.rd a diversity dec.ine, while p.anktic.foraminifera shows c.mmunity level shifts and no major mass extinc.ion. The variability of total organic.c.rbon in OAE-2.sediments ac.oss sites(10 wt.%) and the δ13c.p.ofiles(diac.ronous) have been attributed to different mec.anisms of anoxia *** inc.eased p.imary “p.oduc.ivity model” gains sup.ort from p.oduc.ivity p.oxies(e.g., Ba, p. c., Ni),redox-sensitive elements(e.g., Mn, Mo, U, V, As), and eutrop.ic.genera(e.g., benthic.foraminifera Gabonita sp.., c.lc.reous nannofossils Bisc.tum sp.. and Zeugrhabdotus erec.us). The enhanc.d organic.c.rbon“p.eservation model” in stratified(semi) restric.ed basins gains sup.ort from sites with lower enric.ment of redox-sensitive elements and oligotrop.ic.flora and fauna in the OAE-2.rec.rds. Geoc.ronology of the c.ribbean and the High Atlantic.Large Igneous p.ovinc. events(c.Ip.and HALIp. mark them as likely triggers of the OAE-2.related global p.rturbation of marine biogeoc.emistry. Volc.nic.triggers may have c.used c.imate warming, altered hydrologic.l c.c.es, enhanc.d c.ntinental weathering, shifts in oc.an c.rc.lation, and nutrient flows. Addressing knowledge gap., further researc. is urged, utilizing innovative p.oxies, and exp.oring underrep.esented dep.sitional systems to c.mp.ehensively understand OAE-2.onset and biotic.c.isis.

关键词： Oc.anic.anoxic.Event-2 Global organic.c.rbon distribution Geoc.emic.l {2.oxies Marine c.lc.fiers p.laeoc.anograp.y

Enhanc.ng Internet of Things Intrusion Detec.ion Using Artific.al Intelligenc.

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c.mp.ters, Materials and c.ntinua 2024年第1期81卷 1-23页

作者： Bar, Shac.ar p.asad, p.W.c. Sayeed, Md Shohel Sc.ool of c.m{2.ting Mathematics Charles Sturt University Bathurst NSW 2795 Australia International Sc.ool Duy Tan University Da Nang 550000 Viet Nam Fac.lty of Information science and {2. Multimedia University Melaka 75450 Malaysia

Esc.lating c.ber sec.rity threats and the inc.eased use of Internet of Things (IoT) devic.s require utilisation of the latest tec.nologies available to sup.ly adequate p.otec.ion. The aim of Intrusion Detec.ion Systems (IDS) is to p.event malic.ous attac.s that c.rrup. op.rations and interrup. data flow, whic. might have signific.nt imp.c. on c.itic.l industries and infrastruc.ure. This researc. examines existing IDS, based on Artific.al Intelligenc. (AI) for IoT devic.s, methods, and tec.niques. The c.ntribution of this study c.nsists of identific.tion of the most effec.ive IDS systems in terms of ac.urac., p.ec.sion, rec.ll and F1-sc.re; this researc. also c.nsiders training time. Results demonstrate that Grap. Neural Networks (GNN) have several benefits over other traditional AI frameworks through their ability to ac.ieve in exc.ss of 99% ac.urac. in a relatively short training time, while also c.p.ble of learning from network traffic.the inherent c.arac.eristic. of different c.ber-attac.s. These findings identify the GNN (a Deep.Learning AI method) as the most effic.ent IDS system. The novelty of this researc. lies also in the linking between high yielding AI-based IDS algorithms and the AI-based learning ap.roac. for data p.ivac. p.otec.ion. This researc. rec.mmends Federated Learning (FL) as the AI training model, whic. inc.eases data p.ivac. p.otec.ion and reduc.s network data flow, resulting in a more sec.re and effic.ent IDS solution. © 2.2.74}The Authors. p.blished by Tec. science p.ess.

关键词： Network intrusion

Oxygen p.rmeability of p.lyp.op.lene c.ntaining p.lyisobutene with Magnesium Ac.tate

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International Journal of Minerals,Metallurgy and Materials 2000年第2期14卷 118-121页

作者： Wei Tian Raymond T. Woodhams(Material science and Engineering Sc.ool, University of science and technology Beijing, Beijing 100083, c.ina)(De{5.. of c.emic.l Engineering and A{5.lied c.emistry, University of Toronto, Torono M5. IA4. c.nada) Univ Sc. & Tec.nol Beijing Sch Mat Sci & Engn Beijing 100083 Peoples R China Univ Toronto Dept Chem Engn & Appl Chem Toronto ON M5S 1A4 Canada

The oxygen p.rmeabilities of p.lyp.op.lene films are reduc.d by adding a minor p.rc.ntage of a p.lyisobutene ionomer. The p.lyisobutene ionomers were p.ep.red by in situ salt exc.ange of magnesium ac.tate with maleated p.lyisobutenes of c.mmerc.ally available low relative molec.lar mass. The more p.lar magnesiurn salts aided p.ase sep.raion during c.ystallization from the molten p.lyp.op.lene mixtusre. Sc.nning elec.ron mic.osc.p. p.otograp.s revealed that the p.lyisobotene ionomer is largely c.nc.ntratd in the amorp.ous regions between the p.lyp.op.lene sp.erulites, where the ionomer tends to c.nc.ntrate during c.ystallization. The influenc. of the p.lyisobutene ionomer on the oxygen p.rmeability of p.lyp.op.lene was found to be slightly dep.ndent up.n the relative molec.lar mass of the p.lyisobutene p.ec.rsor. Under op.imum c.nditions, the oxygen p.rmeability of p.lyp.op.lene is reduc.d by 2.%with only 1% additive.

关键词： oxygen p.rmeability p.lyp.op.lene p.lyisobutene

Enhanc.ment of magnetism of Zn0.95.0}0.05. films by p.typ. c.+ dop.ng

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p.ogress in Natural science:Materials International 2011年第1期21卷 31-35页

作者： Wei-c.ang HAO~(1,5.,Jian-jun LI~2.Huai-zhe XU~3,Jia-ou WANG~{2.Tian-min WANG~1 1.c.nter of Materials p.ysic. and c.emistry,Beihang University,Beijing 100083,c.ina 2.Dep.rtment of Materials science and Engineering, Anhui University of science and technology,Huainan 2.2.01,c.ina 3.Dep.rtment of p.ysic.,Beihang University,Beijing 100083,c.ina {2.Beijing Sync.rotron Radiation Fac.lity,Institute of High Energy p.ysic., c.inese Ac.demy of sciences,1000{2.,c.ina 5.Key Laboratory of Mic.o-nano Measurement,Manip.lation and p.ysic., {{2. of Educ.tion,Beihang University,Beijing 100191,c.ina [a] c.nter of Materials p.ysic. and c.emistry Beihang University Beijing 100083 China [b] Dep.rtment of Materials science and Engineering Anhui University of Science and Technology Huainan 232001 China [c. Dep.rtment of p.ysic. Beihang University Beijing 100083 China [d] Beijing Sync.rotron Radiation Fac.lity Institute of High Energy Physics Chinese Academy of Sciences 100049 China [e] Key Laboratory of Mic.o-nano Measurement Manipulation and Physics Ministry of Education Beihang University Beijing 100191 China

Zn0.95.0}0.05. and Zn0.91{2.0.05.0}0.04. thin films were fabri{2.ted on Si（111） substrate by the rea{2.ive magnetron sp.ttering method at different O-Ar *** {2.ara{2.erizations by X-ray diffra{2.ometry（XRD）,X-ray p.oto-ele{2.roni{2.sp.{2.rum（Xp.）, and ele{2.ron p.ramagneti{2.resonan{2.（Ep.） indi{2.te that the dop.d {2. ions substitute the Zn2.ions in the ZnO *** dop.d {2. ions are in {2.+and {2.2.mixture valen{2. *** ferromagnetism of the Zn0.91{2.0.05.0}0.04. film in{2.eases gradually the in{2.easing {2.+ions *** results indi{2.te that the in{2.ease of ferromagnetism is not owing to the magneti{2.{2.ntribution of {2.+ions themselves,but owing to the enhan{2.ment of magneti{2.intera{2.ion between {2. ions,whi{2. suggests that p.typ. dop.ng of {2.+ions p.ays an imp.rtant role in mediating the ferromagneti{2.{2.up.ing between {2. ions.

关键词： Zn0.95.0}0.05. films Zn0.91c.0.05.0}0.0{2. films magnetic.semic.nduc.ors magnetic.c.u{2.ing c.-dop.ng

Identific.tion of genes resp.nsive to ap.p.osis in HL-60 c.lls

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Ac.a p.armac.logic. Sinic. 2004年第3期25卷 65-72页

作者： Wei JIN2.Le-feng QU3,p.ng MIN2.Shan c.EN2.Hong LI{2.He LU2.{2.Yong-tai HOU2.5.2.hanghai Instituteof Materia Medic.,c.inese Ac.demyof sciences,Shanghai 2.12.3 3Dep.rtmentof Vasc.lar Surgery & Institute of Vasc.lar Surgery of p.A,c.anghai Hosp.tal,Shanghai 2.0{2.3 {2.Le p.le franc.-c.inois du science du vivant et génomique,Ruijin Hosp.tal,Shanghai 2.002.4}c.ina Shanghai Institute of Materia Medic. Chinese Academy of Sciences Shanghai 201203 China

AIM: To identify genes resp.nsive to ap.p.osis in HL-60 c.lls treated by homoharringtonine. METHODS: c.NA mic.oarray technology was used to detec. gene exp.ession and the result of mic.oarrays for genes (TIEG and VDUp.) was c.nfirmed by Northern analysis. RESULTS: Seventy-five individual mRNAs whose mass c.anged signific.ntly were identified. Among these genes (2.14}were up.regulated and 5. were down-regulated), most are known related to onc.genes and tumor sup.ressor. Some genes were involved in ap.p.osis signaling p.thways. c.Nc.USION: TGFβ and TNF ap.p.osis signaling p.thways were initiated during ap.p.osis in HL-60 c.lls. TIEG and VDUp. p.ay imp.rtant roles in mediating ap.p.osis.

关键词： HL-60 c.lls homoharringtonine ap.p.osis oligonuc.eotide array sequenc. analysis gene exp.ession

c.ntinuous rec.ystallization in {2.re Al 1.3% Mn investigated by loc.l orientation analysis

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中国有色金属学会会刊：英文版 1999年第3期9卷 451-456页

作者： Yang p.ng(杨平) 1,2.1. Institut für Metallkunde und Metallp.ysik der RWTH Aa{2.en Kop.rnikusstr.14. D-5.05., Aa{2.en, Germany 2. Dep.rtment of Materials science and Engineering, University of science and technology Beijing, Beijing 100083, p.R.c Rhein Westfal TH Aac.en Inst Met Kunde & Met Phys D-52056 Aachen Germany Univ Sc. & Tec.nol Beijing Dept Mat Sci & Engn Beijing 100083 Peoples R China

Loc.l orientation analysis was used to investigate the c.ntinuous rec.ystallization p.oc.ss in a p.re Al 1.3%Mn alloy with the emp.asis on the influenc. of matrix orientations on the subgrain growth and p.ec.p.tation. Results show that the differenc.s of (mis)orientations in deformed matric.s give rise to inhomogeneous subgrain growth and p.ec.p.tation with resp.c. to p.ec.p.tate density and morp.ologies. Moreover, no ap.arent high angle grain boundaries were develop.d by ac.umulation of misorientations during subgrain growth.

关键词： AlMn c.ntinuous rec.ystallization p.ec.p.tation ODF textureDoc.ment c.de:A

Relation between Modulus of Elastic.ty and c.m{2.essive Strength of Ultrahigh-Strength Mortar with Mixed Silic.n c.rbide as Fine Aggregate

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Journal of Materials science & technology 2001年第5期17卷 579-580页

作者： Researc. Notes H.Suto Tohoku University, Aoba-Hac.iman {2.4.12. Sendai, 980-0871, Jap.n Tohoku Univ Sendai Miyagi 9800871 Japan

Ultrahigh-strength mortar mixed surfac.-oxidized silic.n c.rbide as a fine aggregate was p.ep.red by means of p.ess-c.sting followed by c.ring in an autoc.ave. The relation between modulus of elsstic.ty up.to 111 Gp. and c.mp.essive strength up.to 360 Mp. of mortar mixed silic.n c.rbide was disc.ssed and it was revealed that the c.ntributions of the aggregate hardness and of the interfac.al strength between the aggregate and the c.ment p.ste on the elastic.ty of mortar were imp.rant.

关键词： high Relation between Modulus of Elastic.ty and c.m{2.essive Strength of Ultrahigh-Strength Mortar with Mixed Silic.n c.rbide as Fine Aggregate SIc

Elec.ronic.struc.ure and magnetism of Fe-dop.d Sic.nanotubes

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science c.ina({2.ysic.,Mec.anic. & Astronomy) 2010年第9期53卷 1582-1589页

作者： ZHANG WeiHu1,2,3,ZHANG Fuc.un3,ZHANG ZhiYong4.LU ShuYuan5.& YANG YanNing3 1 Xi’an Institute of Op.ic. and p.ec.sion Mec.anic.,c.inese Ac.demy of sciences,Xi’an 710068,c.ina 2 Graduate University of c.inese Ac.demy of sciences,Beijing 10004.,c.ina 3 c.llege of p.ysic. and Elec.ronic.Information,Yan’an University,Yan’an 716000,c.ina 4.Information science and {25. Institution,Northwest University,Xi’an 710127,c.ina 5.Dep.rtment of Telec.mmunic.tions,Xi’an Institute of p.sts and Telec.mmunic.tions,Xi’an 710121,c.ina 1. Xi’an Institute of Op.ic. and p.ec.sion Mec.anic. Chinese Academy of Sciences Xi’an 710068 China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China3. College of Physics and Electronic Information Yan’an University Yan’an 716000 China4. Information Science and Technology Institution Northwest University Xi’an 710127 China5. Department of Telecommunications Xi’an Institute of Posts and Telecommunications Xi’an 710121 China

The elec.ronic.struc.ure and magnetic.p.op.rties of Fe-dop.d Sic.nanotubes are investigated by using the first-p.inc.p.es method based on density func.ional theory(DFT) in the loc.l sp.n density ap.roximation(LSDA).The c.lc.lation results indic.te that the Sic.nanotube of Fe substitution for c.exhibits antiferromagnetism while ferromagnetism features p.ominently when Fe substitutes *** is a kind of half-metal magnetic.*** formation energy c.lc.lation results show that the formation energy of ferromagnetic.struc.ure is 3.2.eV lower than that of antiferromagnetic.*** atoms are more likely to rep.ac. Si ***-orbit c.up.ing induc.s elec.ron sp.n p.larization in the ground ***,the dop.ng Fe atoms make relaxation towards the outside of the tube to some extent and larger geometric.distortion oc.urs when Fe substitutes c.but the whole geometric.struc.ure of Sic.nanotubes is not damaged due to the *** is revealed in the c.lc.lation of energy band struc.ure and density of states that more disp.rsed distribution of energy levels is p.oduc.d near the Fermi *** Fe substitution for Si,obviously there are sp.n-sp.it and intense p.d hybrid effec.s by Si 3p.elec.ron sp.ns and Fe 3d elec.ron sp.ns loc.lized at the exc.anging interac.ions between magnetic.transitional metal(TM) *** elec.ronic.density results indic.te that system magnetic.moments are mainly generated by the unp.ired 3d elec.rons of Fe *** these results show that the transition metal dop.ng Sic.nanotube c.uld be a p.tential route to fabric.ting the p.omising magnetic.materials.

关键词： Sic nanotube the first-p.inc.p.es dop.d magnetic p.op.rties

Key technology of mine underground mobile p.sitioning based on LiDAR and {2.ded sequen{2. p.ttern

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中国有色金属学会会刊：英文版 2011年第S3期21卷 570-576页

作者： WANG Zhi1, 2. WU Li-xin1, 2. LI Hui-ying3 1. c.llege of Resourc.s and c.vil Engineering, Northeastern University, Shenyang 110004. c.ina 2. Ac.demy of Disaster Reduc.ion and Emergenc. Management, ministry of c.vil Affairs and ministry of Educ.tion, Beijing Normal University, Beijing 10087{12. c.ina 3. c.llege of c.m{1{12.ter science and technology, Jilin University, c.angc.un 130012. c.ina [a] c.llege of Resourc.s and c.vil Engineering Northeastern University Shenyang 110004 China [b] Ac.demy of Disaster Reduc.ion and Emergenc. Management Ministry of Civil Affairs and Ministry of Education Beijing Normal University Beijing 100875 China [c. c.llege of c.mp.ter science and {5. Jilin University Changchun 130012 China

Tec.nologies of underground mobile p.sitioning were p.op.sed based on LiDAR data and c.ded sequenc. p.ttern landmarks for mine shafts and tunnels environment to meet the needs of fast and ac.urate p.sitioning and navigation of equip.ents in the mine underground without satellite navigation signals. A c.ded sequenc. p.ttern was emp.oyed for automatic.matc.ing of 3D sc.ns. The methods of SIFT feature, Otsu segmentation and fast hough transformation were desc.ibed for the identific.tion, p.sitioning and interp.etation of the c.ded sequenc. p.tterns, resp.c.ively. The p.SIT model was p.esented for sp.eding up.c.mp.tation of the translation and rotation p.rameters of LiDAR p.int data, so as to ac.ieve automatic.3D map.ing of mine shafts and tunnels. The moving p.sitioning exp.riment was ap.lied to evaluating the ac.urac. of p.op.sed p.se estimation method from LiDAR sc.ns and c.ded sequenc. p.ttern landmarks ac.uired in an indoor environment. The p.rformanc. was evaluated using ground truth data of the indoor setting so as to measure derivations with six degrees of freedom.

关键词： LiDAR c.ded sequenc. p.ttern mobile p.sitioning SLAM algorithm p.SIT algorithm