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Machi.e learni.g algori.hm parti.lly reconfi.ured on FPGA for an i.age edge detecti.n system

Journal of Electroni. sci.nce and Technology 2024年第2期22卷 48-68页

作者： Graci.th Cavalcanti.Bati.ta Johnny oberg Osamu saotome Haroldo F.de Campos Velho Elci. Hi.ei.i.shi.uemori.i.gemar soderqui.t Di.i.i.n of Electroni. and Embedded systems KTH Royal Institute of TechnologyStockholm 16440Sweden Electroni. Engi.eeri.g Di.i.i.n Aeronautics Institute of TechnologySao Josédos Campos SP 12228-900Brazil Laboratory of Appli.d Computi.g and Mathemati.s National Institute for Space ResearchSao Josédos Campos SP 12227-900Brazil Department of C4i.R Institute of Advanced StudiesSao Josédos Campos SP 12228-001Brazil saab AB Linkoping 58188Sweden

Unmanned aeri.l vehi.les(UAVs)have been wi.ely used i. mi.i.ary,medi.al,wi.eless communi.ati.ns,aeri.l survei.lance,*** key topi. i.volvi.g UAVs i. pose esti.ati.n i. autonomous navi.ati.n.A standard procedure for thi. process i. to combi.e i.erti.l navi.ati.n system sensor i.formati.n wi.h the global navi.ati.n satelli.e system(GNss)***,some factors can i.terfere wi.h the GNss si.nal,such as i.nospheri. sci.ti.lati.n,jammi.g,or *** alternati.e method to avoi. usi.g the GNss si.nal i. to apply an i.age processi.g approach by matchi.g UAV i.ages wi.h georeferenced *** a hi.h effort i. requi.ed for i.age edge *** a support vector regressi.n(sVR)model i. proposed to reduce thi. computati.nal load and processi.g *** dynami. parti.l reconfi.urati.n(DPR)of part of the sVR datapath i. i.plemented to accelerate the process,reduce the area,and analyze i.s granulari.y by i.creasi.g the grai. si.e of the reconfi.urable *** show that the i.plementati.n i. hardware i. 68 ti.es faster than that i. *** archi.ecture wi.h DPR also faci.i.ates the low power consumpti.n of 4 mW,leadi.g to a reducti.n of 57%than that wi.hout *** i. also the lowest power consumpti.n i. current machi.e learni.g hardware ***,the ci.cui.ry area i. 41 ti.es *** wi.h Gaussi.n kernel shows a success rate of 99.18%and mi.i.um square error of 0.0146 for testi.g wi.h the planni.g *** system i. useful for adapti.e appli.ati.ns where the user/desi.ner can modi.y/reconfi.ure the hardware layout duri.g i.s appli.ati.n,thus contri.uti.g to lower power consumpti.n,smaller hardware area,and shorter executi.n ti.e.

关键词： Dynami. parti.l reconfi.urati.n(DPR) Fi.ld programmable gate array(FPGA)i.plementati.n i.age edge detecti.n support vector regressi.n(sVR) Unmanned aeri.l vehi.le(UAV) pose esti.ati.n

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Change i. Grai.-si.e Composi.i.n of Li.ni.e under Cycli. Freezi.g-Thawi.g and Wetti.g-Dryi.g

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Natural Resources 2024年第1期15卷 17-27页

作者： Natali. s. Batugi.a Vladi.lav i. Fedorov Chersky i.sti.ute of Mi.i.g of the North si.eri.n Branch Russi.n Academy of sci.nces Yakutsk Russia

The paper presents the change i. grai.-si.e composi.i.n of li.ni.e under cycli. freezi.g-thawi.g (FTC) and wetti.g-dryi.g (WDC). The arti.le shows that i. the spri.g and autumn peri.ds the li.ni.es can be subjected to repeated freezi.g-thawi.g and wetti.g-dryi.g, whi.h determi.es the possi.i.i.y of changi.g thei. grai.-si.e composi.i.n and structure. Experi.ental studi.s i. laboratory condi.i.ns on the i.fluence of cycli. freezi.g-thawi.g (FTC) and wetti.g-dryi.g (WDC) on the quali.y i.di.ators of li.ni.es have been carri.d out, thei. granulometri. (fracti.nal) composi.i.n has been studi.d. Freezi.g-thawi.g cycle condi.i.ns are as follows (FTC): mi.i.um exposure temperature: -20°C;maxi.um: +5°C;relati.e humi.i.y: 30%;number of processi.g cycles: 3. Wetti.g-dryi.g cycles are as follows (WDC): dryi.g temperatures are +20, +40, +60, +80°C, dryi.g ti.e 90 mi.utes, the coals are further subjected to rai. (soaki.g) for a peri.d of water saturati.n to humi.i.y of 30% - 40% and dry agai.. The number of wetti.g-dryi.g cycles i. 3 ti.es. The tests have revealed the destructi.e effects of FTC and WDC on the samples of lower metamorphi. grade coal, and the cycles of wet-dry lead to the much hi.her yi.ld of fi.e si.es (-6+0;-13+0 mm) than the cycles of freeze-thaw. Furthermore, i. i. found that the i.crease i. the yi.ld of fi.es depends on the heati.g temperature: coal di.i.tegrati.n proceeds more i.tensi.ely at a hi.her temperature of dryi.g.

关键词： Li.ni.e Freezi.g-Thawi.g Cycle Wetti.g-Dryi.g Cycle Grai. si.e Composi.i.n Dust Coal storage Loss Quali.y

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A Di.ensi.nal Reducti.n Approach Based on Essenti.l Constrai.ts i. Li.ear Programmi.g

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Ameri.an Journal of Operati.ns Research 2024年第1期14卷 1-31页

作者： Ei.i.i.i. Ni.olopoulou George s. Androulaki. Department of Mathemati.s University of Patras Patras Greece Department of Busi.ess Admi.i.trati.n University of Patras Patras Greece

Thi. paper presents a new di.ensi.n reducti.n strategy for medi.m and large-scale li.ear programmi.g problems. The proposed method uses a subset of the ori.i.al constrai.ts and combi.es two algori.hms: the wei.hted average and the cosi.e si.plex algori.hm. The fi.st approach i.enti.i.s bi.di.g constrai.ts by usi.g the wei.hted average of each constrai.t, whereas the second algori.hm i. based on the cosi.e si.i.ari.y between the vector of the objecti.e functi.n and the constrai.ts. These two approaches are complementary, and when used together, they locate the essenti.l subset of i.i.i.l constrai.ts requi.ed for solvi.g medi.m and large-scale li.ear programmi.g problems. After reduci.g the di.ensi.n of the li.ear programmi.g problem usi.g the subset of the essenti.l constrai.ts, the soluti.n method can be chosen from any sui.able method for li.ear programmi.g. The proposed approach was appli.d to a set of well-known benchmarks as well as more than 2000 random medi.m and large-scale li.ear programmi.g problems. The results are promi.i.g, i.di.ati.g that the new approach contri.utes to the reducti.n of both the si.e of the problems and the total number of i.erati.ns requi.ed. A tree-based classi.i.ati.n model also confi.med the need for combi.i.g the two approaches. A detai.ed numeri.al example, the general numeri.al results, and the stati.ti.al analysi. for the deci.i.n tree procedure are presented.

关键词： Li.ear Programmi.g Bi.di.g Constrai.ts Di.ensi.n Reducti.n Cosi.e si.i.ari.y Deci.i.n Analysi. Deci.i.n Trees

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Evoluti.n of Vi.al Load i. Pati.nts i.fected wi.h Hi.-1 at Poi.t G Uni.ersi.y Hospi.al

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Open Journal of Medi.al Mi.robi.logy 2024年第1期14卷 66-76页

作者： A. Mai.a D. Kone D. M. Couli.aly Ag M. Barai.a A. Traore s. s. Di.ki.e i. i. Mai.a i. Konate A. i. Mai.a Faculty of Medi.i.e and Odontostomatology of Bamako (FMOs) University of Science of Technical and Technology De Bamako Bamako Mali Laboratory of Medi.al Bi.logy and Hospi.al Hygi.ne of Poi.t-G Uni.ersi.y Hospi.al Bamako Mali Faculty of Pharmacy of Bamako (FaPh) University of Science of Technical and Technology De Bamako Bamako Mali Laboratory of the Luxembourg Mother-Chi.d Hospi.al Bamako Mali Nati.nal i.sti.ute of Publi. Health Bamako Mali Nati.nal i.sti.ute for Trai.i.g i. Health sci.nces Bamako Mali Laboratory of the Kati.Uni.ersi.y Hospi.al Center Bamako Mali i.fecti.us and Tropi.al Di.eases Department of Poi.t-G Uni.ersi.y Hospi.al Bamako Mali Laboratory of CHU Gabri.l Touré Bamako Mali

i.troducti.n: Hi., the human i.munodefi.i.ncy vi.us, i. the eti.logi.al agent of acqui.ed i.munodefi.i.ncy syndrome (Ai.s). The ai. of thi. study was to assess the evoluti.n of the vi.al load i. pati.nts under treatment. Methodology: Thi. was a study carri.d out from July 2017 to June 2022 at the Poi.t G Uni.ersi.y Hospi.al laboratory. The determi.ati.n of the vi.al load of pati.nts was carri.d out by PCR on the ABOTT M2000sp/rt platform. Results: A total of 129 pati.nts i.fected wi.h Hi.-1, aged 19 to 72 years wi.h a mean age of 40.05 years ± 10.71;all on anti.etrovi.al chemotherapy. The female gender predomi.ated among our pati.nts. The most common treatment regi.en was 2i.Ti.+ 1i.NTi.wi.h 72.9% followed by 2i.Ti.+ 1i.i.wi.h 13.2%. As for the combi.ati.ns of molecules, the combi.ati.n TDF + 3TC + EFV and TDF + 3TC + DTG predomi.ated, respecti.ely 65.1% and 13.2%. 89.9% of our pati.nts had undetectable vi.emi. after 12 months of treatment (p i.h an average vi.al load whi.h had evolved from 681315.65 copi.s/ml ± 1616908.484 to M0 at 5742.36 copi.s /ml ± 35756.883 at M12 (p Conclusi.n: Generally speaki.g, anti.etrovi.al treatment had contri.uted to controlli.g vi.al loads, however the therapeuti. combi.ati.n TDF + 3TC + DTG had made i. possi.le to obtai. more pati.nts wi.h undetectable vi.emi. i.stead.

关键词： Hi.-1 Treatment Vi.al Load Poi.t G Uni.ersi.y Hospi.al

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Landau quanti.ati.n effects on dampi.g Kawahara soli.ons i. electron–posi.ron–i.n plasma i. rotati.g i.ni.ed medi.m

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Communi.ati.ns i. Theoreti.al Physi.s 2024年第10期76卷 143-152页

作者： E i.El-Awady s Hussai. N Akhtar Department of Physi.s Faculty of Science Port Said University Theoreti.al Physi.s Di.i.i.n (TPD) PINSTECH

For the dynami.s of three-di.ensi.nal electron–posi.ron–i.n plasmas, a flui. quantum hydrodynami. model i. proposed by consi.eri.g Landau quanti.ati.n effects i. dense ***–neutral colli.i.ns i. the presence of the Cori.li. force are also consi.ered. The appli.ati.n of the reducti.e perturbati.n techni.ue produces a wave evoluti.n equati.n represented by a damped Korteweg–de Vri.s equati.n. Thi. equati.n, however, i. i.suffi.i.nt for descri.i.g waves i. our system at very low di.persi.n coeffi.i.nts. As a result, we consi.ered the hi.hest-order perturbati.n, whi.h resulted i. the damped Kawahara equati.n. The effects of the magneti. fi.ld, Landau quanti.ati.n, the rati. of posi.ron densi.y to electron densi.y, the rati. of posi.ron densi.y to i.n densi.y, and the di.ecti.n cosi.e on li.ear di.persi.n laws as well as soli.on and conoi.al soluti.ns of the damped Kawahara equati.n are explored. The understandi.g from thi. research can contri.ute to the broader fi.ld of astrophysi.s and ai. i. the i.terpretati.n of observati.nal data from whi.e dwarfs.

关键词： Cori.li. force Kawahara equati.n Landau quanti.ati.n magnetoplasmas quantum plasma soli.ary and cnoi.al waves

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Enhancement of coerci.i.y,permeabi.i.y,and di.lectri. properti.s of Co_(0.2)Zn_(0.3)Ni.(0.5)Eu_(x)Fe_(2-x)O_(4) ferri.es for memory and hi.h frequency devi.es

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Journal of Rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： i.sardar M.D.Hossai. M.s.si.der M.N.i.Khan M.R.Rahman Physi.s Di.ci.li.e Khulna UniversityKhulna9208Bangladesh Department of Physi.s Khulna University of Engineering&TechnologyKhulna9203Bangladesh Department ofComputer sci.nce and Engi.eeri.g Northern University of Business&Technology KhulnaKhulna9100Bangladesh Materi.l sci.nce Di.i.i.n Atomic Energy CentreDhaka1000Bangladesh

spi.el cubi. ferri.es have huge appli.ati.ns i. me mory and hi.h frequency *** the i.provement of these modern devi.es,the magneti. coerci.i.y,permeabi.i.y,and di.lectri. properti.s of a ferri.e are the i.portant *** arti.le focuses on i.provi.g the magneti. coerci.i.y,magneti. permeabi.i.y,and di.lectri. properti.s of Co_(0.2)Zn_(0.3)Ni.(0.5)Eu_(x)Fe_(2-x)O_(4) ferri.es,where x=0.00,0.06,and *** X-ray di.fracti.n(XRD),Fouri.r transform i.frared spectroscopy(FTi.),fi.ld emi.si.n scanni.g electron mi.roscopy(FEsEM),energy di.persi.e X-ray(EDX),vi.rati.g sample magnetometer(VsM),and an i.pedance analyzer were used to characteri.e the structural,magneti.,and di.lectri. properti.s of the *** XRD patterns i.di.ate the formati.n of spi.el cubi. structure of the samples wi.h a secondary peak(EuFeO_(3))for Eu doped *** densi.i.s and porosi.i.s of the samples follow an i.verse trend,where the doped samples’latti.e parameters are i.creased wi.h the i.crement of rare earth Eu *** FTi. analysi. also proves the spi.el cubi. phase of the *** average grai. si.e of the ferri.es i. obtai.ed vi. FEsEM i.ages,and i. i. i.creased from 121 to 198 *** analysi. confi.ms that dopi.g of the Eu content also changes other hysteresi. loop properti.s of Co_(0.2)Zn_(0.3)Ni.(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coerci.i.y of the Eu doped samples i. greater than that of the mother alloy(x=0.00).The EDX study shows that there i. no i.puri.y contami.ati.n i. the *** permeabi.i.y and di.lectri. measurements show an i.proved quali.y factor of the Eu-doped samples wi.h low magneti. and di.lectri. *** dependent resi.ti.i.y and i.pedance analysi. also show the i.proved *** the observed properti.s of the samples,all the i.vesti.ated ferri.es mi.ht be strong candi.ates for potenti.l appli.ati.ns i. memory devi.es,magneti. sensors,and hi.h frequency appli.ati.ns.

关键词： Ferri.es Raree arths Coerci.i.y Permeabi.i.y EDX Resi.ti.i.y

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A stati.ti.al study of Magneti. Flux Emergence i. solar Acti.e Regi.ns Pri.r to strongest Flares

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Research i. Astronomy and Astrophysi.s 2024年第4期24卷 147-160页

作者： Alexander s.Kutsenko Valenti.a i.Abramenko Andrei.A.Plotni.ov Cri.ean Astrophysi.al Observatory p/o NauchnyCrimea298409Russia

Usi.g the data on magneti. fi.ld maps and conti.uum i.tensi.y for solar Cycles 23 and 24,we explored 100 acti.e regi.ns(ARs)that produced M5.0 or stronger *** focus on the presence/absence of the emergence of magneti. flux i. these ARs 2-3 days before the strong flare *** found that 29 ARs i. the sample emerged monotoni.ally ami.st qui.t-sun.A major emergence of a new magneti. flux wi.hi. a pre-exi.ti.g AR yi.ldi.g the formati.n of a complex flare-producti.e confi.urati.n was observed i. another 24 *** 30 ARs,an i.si.ni.i.ant(i. terms of the total magneti. flux of pre-exi.ti.g AR)emergence of a new magneti. flux wi.hi. the pre-exi.ti.g magneti. confi.urati.n was observed;for some of them the emergence resulted i. a formati.n of a confi.urati.n wi.h a small δ-sunspot;11 out of 100 ARs exhi.i.ed no si.natures of magneti. flux emergence duri.g the enti.e i.terval of *** si. cases the emergence was i. progress when the AR appeared on the Eastern li.b,so that the classi.i.ati.n and ti.i.g of emergence were not *** conclude that the recent flux emergence i. not a necessary and/or suffi.i.nt condi.i.n for strong flari.g of an *** flux emergence rate of flare-producti.e ARs analyzed here was compared wi.h that of flare-qui.t ARs analyzed i. our previ.us *** revealed that the flare-producti.e ARs tend to di.play faster emergence than the flare-qui.t ones do.

关键词： sun:acti.i.y sun:flares sun:magneti. fi.lds

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A revi.w of control strategi.s used for morphi.g ai.craft appli.ati.ns

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Chi.ese Journal of Aeronauti.s 2024年第4期37卷 436-463页

作者： Muhammed s.PARANCHEERi.i.AKKATHi. Jafar s.Pi.AKKADAN Rafi. M.AJAJ Mohammadreza AMOOZGAR Davood AsADi.Yahya ZWEi.i.Mi.hael i.FRi.WELL Department of Aerospace Engi.eeri.g Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Department of Aerospace Engi.eeri.g Advanced Research and Innovation Center(ARIC)Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Department of Mechani.al Materials&Manufacturing EngineeringUniversity of NottinghamNottingham NG72RDUK Department of Aerospace Engi.eeri.g Adana Alparslan Turkes Science and Technology UniversityTurkey College of Engi.eeri.g Swansea UniversitySwansea SA18ENUK

Thi. paper revi.ws the vari.us control algori.hms and strategi.s used for fi.ed-wi.g morphi.g ai.craft appli.ati.ns. i. i. evi.ent from the li.erature that the development of control algori.hms for morphi.g ai.craft technologi.s focused on three mai. areas. The fi.st area i. related to preci.e control of the shape of morphi.g concepts for vari.us fli.ht condi.i.ns. The second area i. mai.ly related to the fli.ht dynami.s, stabi.i.y, and control aspects of morphi.g ai.craft. The thi.d area deals mai.ly wi.h aeroelasti. control usi.g morphi.g concepts ei.her for load allevi.ti.n purposes and/or to control the i.stabi.i.y boundari.s. The desi.n of controllers for morphi.g ai.craft/wi.gs i. very challengi.g due to the large changes that can occur i. the structural, aerodynami., and i.erti.l characteri.ti.s. i. addi.i.n, the type of actuati.n system and actuati.n rate/speed can have a si.ni.i.ant effect on the desi.n of such controllers. The aerospace communi.y i. i. strong need of such a cri.i.al revi.w especi.lly as morphi.g ai.craft technologi.s move from fundamental research at a low Technology Readi.ess Level(TRL) to real-li.e appli.ati.ns. Thi. cri.i.al revi.w ai.s to i.enti.y research gaps and propose future di.ecti.ns. i. thi. paper, research acti.i.i.s/papers are categori.ed accordi.g to the control strategy used. Thi. ranges from si.ple Proporti.nal i.tegral Deri.ati.e(Pi.) controllers at one end to complex robust adapti.e controllers and deep learni.g algori.hms at the other end. Thi. i.cludes analyti.al, computati.nal, and experi.ental studi.s. i. addi.i.n, the vari.us dynami. models used and thei. fi.eli.i.s are hi.hli.hted and di.cussed.

关键词： Control strategi.s Morphi.g ai.craft shape morphi.g Fli.ht dynami.s Aeroelasti.i.y

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Anti.acteri.l HA-coati.gs on bi.resorbable Mg alloy

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Journal of Magnesi.m and Alloys 2024年第5期12卷 1965-1985页

作者： K.V.Nadarai. D.V.Mashtalyar M.A.Pi.tkova A.i.Pleshkova i.M.i.shi.etski. M.s.Gerasi.enko E.A.Belov V.V.Kumei.o D.N.Kozyrev K.A.Fomenko V.V.Mostovaya B.R.Torpanov A.R.Bi.ti.i.ov i.s.Osmushko s.L.si.ebryukhov s.V.Gnedenkov i.sti.ute of Chemi.try FEB RAs 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eastern Federal Uni.ersi.y 10 Ajax BayRussky IslandVladivostok 690922Russia A.V.Zhi.munsky Nati.nal sci.nti.i. Center of Mari.e Bi.logy FEB RAs 17 St.PalchevskogoVladivostok 690041Russia Regi.nal Cli.i.al Dermatovenerologi.al Di.pensary 18 V St.GamarnikaVladivostok 690033Russia NMi.“Treatment and Rehabi.i.ati.n Center” 3 Ivankovskoe highwayMoscow 125367Russia

i. thi. study,a calci.m-phosphate coati.g was formed on a Mg-Mn-Ce alloy by the plasma electrolyti. oxi.ati.n(PEO).The anti.i.ti. vancomyci.,wi.ely used i. the treatment of i.fecti.ns caused by staphylococcus aureus(***),was i.pregnated i.to the *** wi.h vancomyci. showed hi.h bacteri.i.al acti.i.y agai.st *** mechani.al and electrochemi.al properti.s of the formed coati.gs were studi.d,as well as i. vi.ro cytotoxi.i.y tests and i. vi.o tests on mature male rats were *** to sEM,EDs,XRD and XPs data,coati.gs had a developed morphology and contai.ed hydroxyapati.e,whi.h i.di.ates hi.h *** analysi. of roughness of coati.gs wi.hout and wi.h vancomyci. di. not reveal any di.ferences,confi.mi.g the hi.h roughness of the *** electrochemi.al tests,an i.crease i. corrosi.n resi.tance by more than two ti.es after the appli.ati.n of PEO coati.gs was *** to the results of an i. vi.o study,after 28 days of the i.plantati.n of samples wi.h calci.m phosphate PEO coati.g and vancomyci.,no si.ns of i.flammati.n were observed,whi.e an i.flammatory reacti.n developed i. the area of i.plantati.n of bare alloy,followed by *** release tests from the coati.gs show a sharp decrease i. the concentrati.n of the released anti.i.ti. on day 7 and then a gradual decrease unti. day *** the experi.ent,no si.ni.i.ant devi.ti.ns i. the condi.i.n and behavi.r of the ani.als were observed;cli.i.al tests di. not reveal a systemi. toxi. reacti.n.

关键词： Bi.acti.e coati.gs Bi.compati.i.i.y Mg alloy Plasma electrolyti. oxi.ati.n Hydroxyapati.e Vancomyci.

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i.vesti.ati.n of the transformati.n of organi. matter of carbonate deposi.s of the semi.uksky-Mendymsky hori.on under hydrothermal condi.i.ns

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Petroleum 2024年第2期10卷 216-223页

作者： s.M.Petrov A.i.Lakhova E.G.Moi.eeva A.G.safi.li.a i.sti.ute of Petroleum Chemistry and NanotechnologiesKazan National Research Technological UniversityKazan420015Russia i.sti.ute of Geology and Oi. and Gas Technologi.s Kazan Federal UniversityKazan420008Russia

The paper presents the results of studi.s on the transformati.n of the organi. matter of si.i.eous-clayey carbonate rocks of the semi.uksko-Mendymsky hori.on of the Romashki.o oi. fi.ld i. a hydrothermal flui. for an hour(wi.h a water-to-rock rati. of 33)at 340℃and 380℃and pressu res of 17 and 20 *** a result of hydrothermal treatment,at 340℃and 17 MPa,based on ni.rogen porosi.etry and electron mi.roscopy data,transformati.ns of rock-formi.g mi.erals i. the rock are *** lead to an i.crease i. the volume and average di.meter of mesopores i. i. and the formati.n of mi.ropores,as well,whi.h i.prove i.s fi.trati.n *** the same ti.e,the amount of kerogen i. the composi.i.n of the organi. matter decreases and the yi.ld of the petroleum hydrocarbon extract i.creases,i. whi.h,accordi.g to the sARA analysi.,the content of asphaltenes i.creases and the content of resi.s,aromati. and saturated hydrocarbons *** the composi.i.n of aroati. hydrocarbons,the proporti.n of a lkyltri.methyl benzenes and di.enzothi.phenes i.creases,phenanthrene homologues appear,and i. the composi.i.n of saturated hydrocarbons,the amount of i.o-structure alkanes decreases relati.e to the content of li.ear *** the temperature and pressure of the hydrothermal flui. to 380℃and 20 MPa i.creases the degree of kerogen conversi.n from 12.4%to 23.6%.At the same ti.e,changes occurri.g i. the component composi.i.n of petroleum hydrocarbon extracts remai.s si.i.ar to the experi.ents carri.d out at 340℃and 17 MPa;the content of naphthalenes decreases,the content of di.enzothi.phenes i.creases and C_(11)-C_(17),C_(19)-C_(22)alkyltri.ethylbenzenes *** to i. spectroscopy,wi.h i.creasi.g temperature and pressure of the hydrothermal flui. the i.tensi.y of the absorpti.n bands of the aromati. ri.g,ali.hati. fragments,and oxygen-contai.i.g groups i.creases i. resi.s;the structural-group composi.i.n of asphaltenes changes li.tle:aromati.i.y and the content of conde

关键词： Carbonate deposi.s Organi. matter Hydrothermal flui. Mobi.e hydrocarbons

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