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Tilted global solar irradian.e in.Bah.ain. an.experim.n.al study

CLEAn.En.RGY 2024年第2期8卷 27-34页

作者： Vasilikos, n. Georgan.opoulou, C. Alajaim., h. Alm.jed, S. h. Ah.ed, m. m.th.oulakis, D. Bah.ain.Polytech Sch Mech Engn POB 33349 Isa Town Bahrain n.tl Tech.Un.v Ath.n. Sch Mech Engn Heroon Polytech 7 St Athens 15773 Greece

In.th. presen. work, tilted global solar irradian.e data are presen.ed an. an.lysed, m.asured for a period of 1 year on.th. cam.us of Bah.ain.Polytech.ic, Kin.dom.of Bah.ain. from.both.a fixed ph.tovoltaic pan.l an. a m.vin. on. via a two-axis solar tracker. Th. fixed pan.l faces south.with.an.an.le of 26 degrees with.respect to th. h.rizon.al, coin.idin. with.th. local geograph.cal latitude. Th. secon. pan.l is m.ved by two m.tors, con.rolled by a global position.n. system.an. suitable software so th.t th. Sun.s rays are perpen.icular to th. pan.l surface. A pyran.m.ter is in.talled on.each.pan.l, recordin. th. tilted global solar irradian.e, stored by usin. a data logger. Th. an.lysis of th. data obtain.d sh.ws a 33% solar en.rgy gain.on.an.an.ual basis for th. m.vin. pan.l (2780 versus 2088 kWh.m. on.th. fixed pan.l). m.re im.ortan.ly, in.Jun., wh.n.th. en.rgy dem.n. in.Bah.ain.is elevated due to th. in.reased residen.ial coolin. loads, th. solar en.rgy received by th. m.vin. pan.l is 54.7% h.gh.r com.ared with.th.t of th. fixed pan.l. On.a percen.age basis, th. in.rease in.solar en.rgy from.th. m.vin. pan.l is profoun. in.th. early m.rn.n. an. late even.n. h.urs. m.reover, th. reduction.in.th. solar en.rgy received by th. fixed pan.l from.m.y to Jun. does n.t appear in.th. m.vin. pan.l because of th. adjustable orien.ation.of th. latter. Th.ough.ut th. year, th. m.an.daily solar power varies between.0.37 an. 0.56 kW/m. for th. fixed pan.l, an. 0.45 an. 0.70 kW/m. for th. m.vin. pan.l. In.win.er, solar en.rgy fluctuation. are elevated due to erratic weath.r con.ition. th.t presen. a peak stan.ard deviation.of 28% of th. correspon.in. m.an. Th. data presen.ed are useful for poten.ial solar in.estm.n.s in.Gulf coun.ries. Tilted global solar irradian.e data are m.asured an. an.lysed for a period of 1 year on.th. cam.us of Bah.ain.Polytech.ic, Kin.dom.of Bah.ain. from.both.a fixed ph.tovoltaic pan.l an. a m.vin. on. via a two-axis solar tracker. Graph.cal Abstract

关键词： tilted solar irradian.e ren.wable en.rgy solar trackin. ph.tovoltaic Gulf Cooperation.Coun.il Coun.ries SUn.TRACKIn. En.RGY SYSTEm. PAn.LS WORLD

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Experim.n.al validation.of double-fed in.uction.gen.rator in.oscillatin. water colum. usin. circulatory system.based optim.zation

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CLEAn.En.RGY 2024年第2期8卷 127-143页

作者： Eln.gh., Basem.E. Ism.iel, Ah.ed m. Abdel-Kader, Fath. El Sayed m.h.m.ed, Reh.m.h. Abelwh.b, m. n. Suez Can.l Un.v Elect Power & Machine Dept Ismailia Egypt m.n.ufia Un.v Fac Engn Elect Machine & Power Dept Menoufia Egypt Suez Can.l Un.v Comp & Control Dept Ismailia Egypt

Th.s paper validates th. optim.l operation.for a grid-con.ected double-fed in.uction.gen.rator (DFIG) in.an.oscillatin. water colum. power plan. (OWCPP). Th.s study presen.s a n.vel optim.zation.tech.ique called th. circulatory system.based optim.zation.(CSBO) approach.to develop six adaptive fuzzy logic con.rollers (AFLCs) with.30 param.ters an. com.are th.m.to ch.otic-billiards optim.zation.(C-BO) an. gen.tic algorith. (GA). Th. proposed con.roller is also com.ared with.a proportion.l-in.egral differen.ial (PID) con.roller based on.a self-adaptive global-best h.rm.n. search.(SGh.). CSBO-based AFLCs are fully in.estigated un.er differen. scen.rios an. experim.n.ed with.usin. a real-tim. in.erface DSP1104. Th. results of usin. CSBO-AFLCs revealed a fast tim. respon.e, fast con.ergen.e, less oversh.ot an. m.n.m.l error com.ared with.th.se ach.eved with.C-BO-AFLC, SGh.-PID an. GA-AFLC durin. differen. case studies. Th. CSBO-based AFLCs en.ure m.xim.m.power from.th. DFIG in.an.OWCPP an. en.0}n.e dyn.m.c respon.e with.very low errors. Th. results sh.w th.t th. CSBO sh.ws better power trackin. by 25% as com.ared with.C-BO, by 45% wh.n.com.ared with.th. GA an. by 56% wh.n.com.ared with.PID. m.reover, th. in.egral absolute errors of six con.rollers are in.estigated to dem.n.trate th. feasibility of CSBO-AFLC. Th. root m.an.square of th. errors of six con.rollers usin. CSBO is im.roved by 68.27% wh.n.com.ared with.GA, by 22.57% wh.n.com.ared with.C-BO an. by 38.42% wh.n.com.ared with.PID. Th.se in.icators dem.n.trate th. feasibility of CSBO wh.n.com.ared with.oth.r algorith.s with.th. sam. OWCPP. Th.s paper validates th. optim.l operation.of a grid-con.ected double-fed in.uction.gen.rator in.an.oscillatin. water colum. usin. a n.vel optim.zation.tech.ique called th. circulatory system.based optim.zation.approach. Experim.n.s usin. a real-tim. sim.lator dem.n.trate th. feasibility of th. approach.wh.n.com.ared with.oth.r algorith.s. Graph.cal Abstract

关键词： circulatory system.based optim.zation.approach adaptive fuzzy logic con.roller grid-tied oscillatin. water colum. power plan. m.xim.m.power poin. trackin. WAVE En.RGY-COn.ERSIOn DESIGn.OPTIm.ZATIOn ALGORITh. COn.ROLLER TURBIn.

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Effect of cold-workin. on.corrosion.in.uced dam.ge in.lug join.s

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Defen.e Tech.ology（防务技术） 2024年第6期36卷 175-182页

作者： Ram.n.th.m.n.Ch.km.th.L. m.rth. h. Departm.n. of Aerospace En.in.erin. Indian Institute of Technology-MadrasChennai 600036India Departm.n. of Aeron.utical En.in.erin. KLS Gogte Institute of TechnologyBelagavi 590008India

Lug join.s are preferred join.ries for tran.ferrin. h.avy loads to paren. com.on.n.s in.aerospace *** experien.e corrosion.due to en.iron.1}n.al con.ition.,im.roper surface fin.sh.s an. rubbin. displacem.n. between.th. pin.an. *** causes dam.ge of differen. sizes an. sh.pes n.ar th. *** degradation.due to corrosion.in.uced dam.ge is m.delled as a th.ough.pit at on. of th. iden.ified critical location. th.ough.stress *** effect of th.s pit on.fatigue crack in.tiation.life is ***-h.le is pre-stressed by cold-workin. an. th. ben.fits of in.ucin. plastic wake on.th. in.en.ed perform.n.e of th. lug join. durin. th. dam.ges due to corrosion.are brough. out an. com.ared with.n.n.cold-worked *** an.lysis is perform.d on.th.s lug join. with.*** results obtain.d h.gh.igh. th. ben.fits of cold-workin. an. th. m.th.dology can.be exten.ed to dam.ge growth.an. an.lyse th. effect of surface treatm.n.s for better structural in.egrity of com.on.n.s of aerospace veh.cles.

关键词： Lug join. Corrosion Crack in.tiation Cold-workin. Structural in.egrity

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A h.drodyn.m.c m.dellin. of wave-activated bodies for wavelet m.rin. region.

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CLEAn.En.RGY 2024年第2期8卷 35-47页

作者： Peh. J. S. m.h.eldeen. m.h.m.ed W. Sh.aib, n. h. UCSI Un.v Fac Engn Technol & Built Environm Mech Engn Dept Kuala Lumpur 56000 Malaysia m.C En.in.er Sdn.Bh. Shah Alam Selangor Malaysia

Recen.ly, m.st wave en.rgy research.h.s targeted sea areas with.h.gh.power den.ity un.er extrem. wave con.ition. for deploym.n.. Th.s tren. often.leads to h.gh.r en.rgy costs for wave power plan.s. h.wever, m.n. m.rin. areas with.low power den.ity, ch.racterized by wavelet con.ition. an. less destructive forces th.n.extrem. wave con.ition., rem.in.un.erexplored. Th.refore, th.s study aim.d to propose a wave-activated body m.del for sea region. with.wavelet con.ition.. Th. wave-activated body design.process en.om.assed site selection. param.ter determ.n.tion. geom.try design. com.arison.an. perform.n.e evaluation.usin. th. An.YS (R) AQWA m.del. Th. results in.icated th.t th. proposed device ach.eved th. desired h.ave m.tion. with.an.am.litude ran.e of 1.2 to -2.5 m. validatin. its poten.ial for deploym.n. in.m.rin. region. with.wavelet con.ition.. n.tably, wh.le th. proposed design.is optim.zed for wavelet con.ition., it was foun. to h.ve poten.ial lim.tation. in.extrem. wave en.iron.0}n.s. Th.s observation.em.h.sizes th. ch.llen.e of form.latin. a gen.ralized design.suitable for both.con.ition.. Con.equen.ly, it is pivotal for wave-activated body design. to be custom.zed based on.th. specific ocean.con.ition. th.y target, un.erscorin. th. n.ed for specialized design. of wave en.rgy con.erters th.t con.ider th. un.que wave ch.racteristics of th.ir deploym.n. sites. A wave-activated body is design.d for en.rgy gen.ration.in.ocean.region. with.wavelet con.ition.. h.drodyn.m.c m.dellin. is carried out for two location. with.differen. wave ch.racteristics to determ.n. th. optim.m.con.ition. for deploym.n.. Graph.cal Abstract

关键词： wave en.rgy con.erter South.Ch.n. sea ren.wable an. sustain.ble en.rgy wavelet An.YS AQWA h.drodyn.m.c wave-activated bodies En.RGY Im.ACT

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Fuel cell stack design.an. m.dellin. with.a double-stage boost con.erter coupled to a sin.le-ph.se in.erter

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CLEAn.En.RGY 2024年第1期8卷 188-196页

作者： Eln.gi, Basem.E. Ism.iel, Ah.ed m. m.n.our, h.n. S. E. Abd-Alwah.b, m. n. Suez Can.l Un.v Fac Engn Elect Engn Dept Ismailia 41522 Egypt

A com.reh.n.ive proton.exch.n.e m.m.ran. fuel cell stack m.del was developed an. in.egrated with.a two-stage DC/DC boost con.erter. It was directly coupled to a sin.le-ph.se (two levels-four pulses) in.erter with.ut a tran.form.r. Th. pulse-width.m.dulation.sign.l was used to in.epen.en.ly regulate every con.erter ph.se. Th. con.erter was m.delled usin. a m.TLAB (R)/Sim.lin. (R) en.iron.0}n. an. an.appropriate voltage con.rol m.th.d. Th. an.lysis features of th. suggested circuit were created an., th.ough.establish.d experim.n.s, th. sim.lation.results were verified. A sin.le-ph.se (two levels-four pulses) in.erter con.rol circuit was tested an. it produced a pure sin.soidal waveform.with.voltage con.rol. It m.tch.s th. voltage of th. n.twork in.term. of am.litude an. frequen.y. A sin.soidal pulse-width.m.dulation.approach.was perform.d usin. a sin.le-ph.se (two levels-four pulses) pulse-width.m.dulation.in.erter. Th. results dem.n.trated an.en.1}n.em.n. in.th. stan.ard of th. output wave an. tun.d th. dead tim. with.a reduction.of 63 m. s com.ared with.180 m. s in.con.en.ion.l tech.iques. A com.reh.n.ive m.del of a proton.exch.n.e m.m.ran. fuel cell stack is in.egrated with.a sin.le-ph.se (two levels-four pulses) in.erter with.ut a tran.form.r. Pulse-width.m.dulation.is used to in.epen.en.ly regulate every con.erter ph.se. As a result, th. dead tim. is reduced com.ared to con.en.ion.l tech.iques. Graph.cal Abstract

关键词： PEm.fuel cell pulse-width.m.dulation sin.le-ph.se in.erter an. double-stage DC/DC boost con.erter PERFORm.n.E SYSTEm

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Com.arison.of Treatm.n. Efficacy of Differen. n.m.er of Botulin.m.Toxin.Type A In.ection.Sites for Crow's Feet Lin.s: A Sin.le-Cen.er Retrospective Clin.cal Study in.Vietn.m

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In.ern.tion.l Journ.l of Derm.tology an. Ven.reology 2024年第3期7卷 131-136页

作者： n.uyen.Quan. m. Le Th. m. Duon. Ph.c h. Vu Th.i h. Le h.u D. Departm.n. of Stem.Cell Research.an. Application National Hospital of Dermatology and Venereology Hanoi 100000 Viet Nam Departm.n. of h.alth.are Activity Direction National Hospital of Dermatology and Venereology Hanoi 100000 Viet Nam Departm.n. of Derm.tology Hanoi Medical University Hanoi 100000 Viet Nam

Objective: Botulin.m.toxin.type A is frequen.ly used to treat crow's feet lin.s. h.wever, th. optim.l dose an. in.ection.sites are still con.roversial. Th. objective of th.s study was to com.are th. efficacy of differen. botulin.m.toxin.type A in.ection.pattern. for th. treatm.n. of crow's feet. m.th.ds: Th.s sin.le-cen.er, retrospective, clin.cal study was con.ucted at th. n.tion.l h.spital of Derm.tology an. Ven.reology from.July 2020 to Decem.er 2020. Data on.60 patien.s with.crow's feet were collected an. divided in.o 2 groups (3- or 4-poin. in.ram.scular in.ection. accordin. to th. in.ram.scular in.ection.tech.ique th. patien.s received. Th. treatm.n. efficacy was assessed based on.th. ch.n.es in.th. Crow's Feet Gradin. Scale score at 1, 4, an. 16 weeks after treatm.n.. Repeated m.asures an.lysis of varian.e was used for th. assessm.n. of ch.n.es in.scores over tim. between.th. two groups. Results: After treatm.n., th. average Crow's Feet Gradin. Scale score was sign.fican.ly decreased com.ared with.th. pretreatm.n. score at all tim.poin.s (1, 4, an. 16 weeks) in.both.states (dyn.m.c: For 3-poin. in.ram.scular in.ection.tech.ique, 1 week: 1.90 ± 0.71 vs. 2.97 ± 0.56; 4 weeks: 1.87 ± 0.68 vs. 2.97 ± 0.56; 16 weeks: 2.60 ± 0.67 vs. 2.97 ± 0.56. For 4-poin. in.ram.scular in.ection.tech.ique, 1 week: 1.73 ± 0.83 vs. 3.03 ± 0.49; 4 weeks: 1.73 ± 0.74 vs. 3.03 ± 0.49; 16 weeks: 2.57 ± 0.68 vs. 3.03 ± 0.49, all P n. static: For 3-poin. in.ram.scular in.ection.tech.ique, 1 week: 1.20 ± 0.89 vs. 2.20 ± 0.85; 4 weeks: 1.20 ± 0.89 vs. 2.20 ± 0.85; 16 weeks: 1.87 ± 0.97 vs. 2.20 ± 0.85; For 4-poin. in.ram.scular in.ection.tech.ique, 1 week: 1.50 ± 0.86 vs. 2.30 ± 0.84; 4 weeks: 1.33 ± 0.84 vs. 2.30 ± 0.84; 16 weeks: 1.87 ± 0.97 vs. 2.30 ± 0.84. All P h. average subjective patien.-rated satisfaction.scores after treatm.n. were sign.fican.ly h.gh.r in.th. 4-poin. in.ection.group th.n.in.th. 3-poin. in.ection.group (P = 0.028). Th. adverse even.s were pos

关键词： botulin.m.toxin.type A crow's feet lin.s dose in.ection.site

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Ch.m.stry : structure an. dyn.m.cs / Jam.s n. Spen.er, George m. Bodn.r, Lym.n.h. Rickard.

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1999年

作者： Jam.s n. Spen.er George m. Bodn.r Lym.n.h. Rickard.

来源：畅想之星图书光盘版（南... 评论

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A h.brid m.ch.n.-learn.n. m.del for solar irradian.e forecastin.

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CLEAn.En.RGY 2024年第1期8卷 100-110页

作者： Alm.rzooqi, Am.era m. m.alouf, m.h.r El-Fouly, Tarek h. m. Katzourakis, Vasileios E. El m.ursi, m.h.m.d S. Ch.ysikopoulos, Con.tan.in.s, V Kh.lifa Un.v Dept Ind & Syst Engn POB 127788 Abu Dhabi U Arab Emirates Kh.lifa Un.v Abu Dh.bi Elect Engn & Comp Sci Dept Abu Dhabi U Arab Emirates Kh.lifa Un.v Dept Civil Infrastruct & Environm Engn POB 127788 Abu Dhabi U Arab Emirates Tech.Un.v Crete Sch Chem & Environm Engn Khania 73100 Greece

n.wcastin. an. forecastin. solar irradian.e are vital for th. optim.l prediction.of grid-con.ected solar ph.tovoltaic (PV) power plan.s. Th.se plan.s face operation.l ch.llen.es an. sch.dulin. dispatch.difficulties due to th. fluctuatin. n.ture of th.ir power output. As th. gen.ration.capacity with.n.th. electric grid in.reases, accurately predictin. th.s output becom.s in.reasin.ly essen.ial, especially given.th. ran.om.an. n.n.lin.ar ch.racteristics of solar irradian.e un.er variable weath.r con.ition.. Th.s study presen.s a n.vel prediction.m.th.d for solar irradian.e, wh.ch.is directly in.correlation.with.PV power output, targetin. both.sh.rt-term.an. m.dium.term.forecast h.rizon.. Our proposed h.brid fram.work em.loys a fast train.ble statistical learn.n. tech.ique based on.th. trun.ated-regularized kern.l ridge regression.m.del. Th. proposed m.th.d excels in.forecastin. solar irradian.e, especially durin. h.gh.y in.erm.tten. weath.r periods. A key stren.th.of our m.del is th. in.orporation.of m.ltiple h.storical weath.r param.ters as in.uts to gen.rate accurate prediction. of future solar irradian.e values in.its scalable fram.work. We evaluated th. perform.n.e of our m.del usin. data sets from.both.cloudy an. sun.y days in.Seattle an. m.dford, USA an. com.ared it again.t th.ee forecastin. m.dels: persisten.e, m.dified 24-h.ur persisten.e an. least squares. Based on.th.ee widely accepted statistical perform.n.e m.trics (root m.an.squared error, m.an.absolute error an. coefficien. of determ.n.tion., our h.brid m.del dem.n.trated superior predictive accuracy in.varyin. weath.r con.ition. an. forecast h.rizon.. A n.vel prediction.m.th.d for solar irradian.e, targetin. both.sh.rt-term.an. m.dium.term.forecast h.rizon., is proposed to im.rove PV power production. Th. h.brid fram.work em.loys a fast train.ble statistical learn.n. tech.ique based on.th. trun.ated-regularized kern.l ridge regression.m.del. Graph.cal Abstract

关键词： solar power gen.ration kern.l ridge regression h.brid m.del forecastin. BATTERY En.RGY-STORAGE POWER PV RADIATIOn PREDICTIOn CELLS

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In.egrated Approach.s of m.ch.n.cal Barrier, In.ecticide an. Botan.cals again.t m.n.o m.alybug (Drosich. m.n.iferae)

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Advan.es in.En.om.logy 2024年第3期12卷 195-202页

作者： n. Akh.er m. Z. Alam.m. A. Rah.m.n.m. R. U. m.ah.I. h. m.an.m. A. Latif Departm.n. of En.om.logy Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Departm.n. of En.om.logy Faculty of Agriculture Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh Departm.n. of Plan. Path.logy Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Departm.n. of Plan. Path.logy Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh

An.experim.n. was con.ucted to test th. efficacy of a m.ch.n.cal barrier aroun. th. tree trun. with.on. spray of Cyperm.th.in.@ 1 m./l an. turm.ric powder extract @ 15 g/500m. of water applied in.in.egrated approach.s again.t m.n.o m.alybug on.m.n.o tree. Th.re were 7 treatm.n.s in.ludin. a con.rol. Th. treatm.n.s were m.ch.n.cal barrier, Cyperm.th.in.spray @ 1 m./l, Turm.ric powder spray @ 15 g/500m. of water, Cyperm.th.in.spray + Turm.ric spray, Cyperm.th.in.spray + m.ch.n.cal barrier, Turm.ric + m.ch.n.cal barrier an. un.reated con.rol. Th.ee-year-old m.n.o plan.s grafted from.a 5-year-old m.n.o tree (Variety Am.opali) an. plan.ed in.pots were used in.th. experim.n.. Th. treatm.n., Cyperm.th.in.spray + m.ch.n.cal barrier gave th. h.gh.st reduction.of m.n.o m.alybug population.87.06% to 93.90% followed by Turm.ric spray + m.ch.n.cal barrier an. sh.wed 81.13% to 86.04% an. m.ch.n.cal barrier alon. sh.wed 81.13% to 84.59% population.reduction. Turm.ric powder extract sh.wed on.y (8.42% to 23.77%) population.reduction.of m.n.o m.alybug wh.ch.was lowest com.ared to oth.r treatm.n.s.

关键词： m.n.o m.alybug In.egrated m.n.gem.n.

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m.rin.an.glaciation.in.th. In.ian.subcon.in.n.——An.tom. an. global im.lication.

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Journ.l of Palaeogeograph. 2024年第2期13卷 293-308页

作者： h.n.Bh.ttach.rya Departm.n. of Earth.Scien.es Techno India UniversityWest BengalSector VSalt LakeKolkata700091India

Detailed sedim.n.ological an.lysis of th. Pokaran.Boulder Bed,represen.in. th. m.st basal un.t of th. n.oproterozoic-Lower Cam.rian.m.rwar Supergroup,clearly in.icates its glacial *** glacial sedim.n.s are in.erpreted as an.ice-con.act subm.rin. fan.*** on.th. detrital an. in.1}rited zircon.population.of th. m.rwar Supergroup sedim.n.s an. in.erlayered pyroclastic deposits,a m.rin.an.cryoch.on.of th. Cryogen.an.Period is en.isaged for th. Pokaran.Boulder *** well-preserved Ediacaran.elem.n.s in.th. post-glacial sedim.n.ary succession.also support a Cryogen.an.to Early Cam.rian.age of th. m.rwar *** glacial deposition.at th. base of th. m.rwar Supergroup stren.th.n. th. region.l correlation.between.th. studied sedim.n.s with.th. Lesser h.m.layan.Blain.-Krol-Tal sedim.n.s an. th. h.qf Supergroup of *** available zircon.ages an. paleom.gn.tic data of th. m.lan. Ign.ous suite,alon. with.th. m.rin.an.glacial deposits,detrital zircon.ages,an. Ediacaran.fossil elem.n.s of th. m.rwar Supergroup add sign.fican. in.orm.tion.to th. n.oproterozoic Earth.h.story.

关键词： n.oproterozoic m.rin.an.glaciation Diam.ctites Pokaran.Boulder Bed m.rwar Supergroup

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