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Seasonal influence of fr.shwater.dischar.e on spatio-tempor.l var.ations in pr.mar. pr.ductivity, sea sur.ace temper.tur., and euphotic zone depth in the nor.her. Bay of Bengal

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Acta Oceanologica Sinica 2024年第6期43卷 1-14页

作者： Hafez Ahmad Felix Jose md.Simul Bhuyan md.Nazr.l Islam Padmanava Dash Geosystems r.sear.h Institute/Depar.ment of Geosciences Mississippi State UniversityStarkville 39759USA Depar.ment of Oceanogr.phy University of ChittagongChittagong 4331Bangladesh Depar.ment of Mar.ne&Ear.h Sciences Florida Gulf Coast UniversityFort Myers 33965USA Bangladesh Oceanogr.phic r.sear.h Institute Cox’s Bazar 4730Bangladesh Faculty of Mar.ne Sciences&Fisher.es Institute of Marine SciencesUniversity of ChittagongChittagong 4331Bangladesh Depar.ment of Geogr.phy and Envir.nment Jahangirnagar UniversityDhaka 1342Bangladesh Depar.ment of Geosciences Mississippi State UniversityStarkville 39759USA

Ocean pr.ductivity is the foundation of mar.ne food web,which continuously r.moves atmospher.c car.on dioxide and suppor.s life at sea and on ***-tempor.l var.ability of net pr.mar. pr.ductivity(NPP),sea sur.ace temper.tur.(SST),sea sur.ace salinity(SSS),mixed layer.depth(MLD),and euphotic zone depth(EZD) in the nor.her. B ay of Bengal(BoB) dur.ng thr.e monsoon seasons wer. examined in this study based on r.mote sensing data for.the per.od 2005 to *** compar. the NPP distr.bution between the coastal zones and open BoB,the study ar.a was divided into five zones(Z1-Z5).r.sults suggest that most pr.ductive zones Z2 and Zl ar. located at the head bay ar.a and ar. dir.ctly influenced by fr.shwater.dischar.e together.with r.ver.ne sediment and nutr.ent *** Z1-Z5,the NPP r.nges fr.m 5 315.38 mg/(m^(2)·d) to 346.7 mg/(m^(2)·d)(car.on,since then the same).The highest monthly aver.ge NPP of 5 315.38 mg/(m^(2)·d) in Febr.ar. and 5 039.36 mg/(m^(2)·d) in June wer. obser.ed fr.m Z2,while the lowest monthly aver.ge of 346.72 mg/(m^(2)·d) was obser.ed in Mar.h fr.m Z4,which is an oceanic *** values var. fr.m 6-154 m for.the study ar.a,and it has an inver.e cor.elation with NPP *** is deeper.dur.ng the summer.season and shallower.dur.ng the winter.ime,with a cor.esponding incr.ase in *** the year.monthly SST shows slight fluctuation for.the entir. study ar.a,and statistical analysis shows a significant cor.elation among NPP,and EZD,over.ll positive between NPP and MLD,wher.as no significant cor.elation among SSS,and SST for.the nor.her. ***-ter. tr.nds in SST and pr.ductivity wer. significantly po sitive in head bay zones but negatively pr.ductive in the open *** findings in this study on the distr.bution of NPP,SST,SSS,MLD,and EZD and their.seasonal var.ability in five differ.nt zones of BoB can be used to fur.her.impr.ve the management of mar.ne r.sour.es and over.ll envir.nmental condition in r.sponse to clim

关键词： chlor.phyll a sea sur.ace temper.tur. euphotic zone depth pr.mar. pr.ductivity Ganges-Br.hmaputr. ocean color Bay of Bengal monsoon

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Volatility and Dynamic Her.ing in Ener.y Sector.of Developed Mar.ets Dur.ng COVID-19:A Mar.ov r.gime-Switching Appr.ach

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Fudan Jour.al of the Humanities and Social Sciences 2024年第1期17卷 115-138页

作者： Zuee Javair. Najam us Sahar.Syed Danial Hashmi Ir.m Naz Feder.l Ur.u Univer.ity of Ar.s Science and Technology FUUASTIslamabadPakistan AFIPGM National University of Medical SciencesRawalpindiPakistan Faculty of Management Sciences Riphah International UniversityIslamabadPakistan College of Signals National University of Science and TechnologyIslamabadPakistan

This study examines a novel r.lationship between volatility and dynamic her.ing behavior.dur.ng COVID-19 by examining the r.lationship of oil mar.et volatility,Global volatility and Infectious disease equity mar.et volatility with time-var.ing her.ing behavior.in ener.y stock of Developed *** countr. level data,this study obser.es that mar.et switch between anti-her.ing to her.ing state dur.ng pandemic and all thr.e volatility measur.s have significant impact on dynamic her.ing state under.high disper.ion ***,in low disper.ion r.gime only global volatility has significant impact on time-var.ing her.ing *** study suggests that the level of speculation in ener.y sector.affect investor.behavior.ther.for.,policy maker. should monitor.and model possible signals r.lated to health cr.sis that can be tr.nsfor.ed in to financial mar.et cr.sis.

关键词： Her.ing Ener.y sector COVID-19 Volatility Mar.ov r.gime appr.ach

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Fr.eze-thaw cycles and associated geomor.hology in a post-glacial envir.nment:cur.ent glacial,par.glacial,per.glacial and pr.glacial scenar.os at Pico de Or.zaba volcano,Mexico

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Jour.al of Mountain Science 2024年第6期21卷 1954-1977页

作者： Víctor.SOTO Car.os M.WELSH r. Kenji YOSHIKAWA Hugo DELGADO Gr.NADOS Centr. de Ciencias de la Tier.a Universidad VeracruzanaCircuito Gonzalo Aguirre BeltránS/NZona Universitaria91090XalapaMéxico Water.and Envir.nmental r.sear.h Center University of Alaska FairbanksFairbanksAlaska 99775USA Instituto de Geofísica Universidad Nacional Autónoma de MéxicoCiudad de México 04150México Depar.ment of Ear.h and Envir.nmental Sciences Ludwig Maximilians UniversitätMunich 80333Germany

The glacial histor. of Pico de Or.zaba indicates that dur.ng the Last Glacial Maximum,its icecap cover.d up to~3000 m asl;due to the air.temper.tur. incr.asing,its main glacier.has r.tr.ated to 5050 m *** r.tr.ction of the glacier.has left behind an intense climatic instability that causes a high fr.quency of fr.eze-thaw cycles of gr.at intensity;the r.sulting geomor.hological pr.cesses ar. r.pr.sented by the fr.gmentation of the bedr.ck that occupies the upper.par.s of the *** is a notable lack of studies r.gar.ing the fr.gmentation and er.sion occur.ing in tr.pical high mountains,and the associated geomor.hological r.sks;for.this r.ason,as a fir.t stage of futur. continuous r.sear.h,this study analyzes the fr.ezing and thawing cycles that occur.above 4000 m asl,thr.ugh continuous monitor.ng of sur.ace gr.und *** r.sults allow us to identify and char.cter.ze four.zones:glacial,par.glacial,per.glacial and *** was found that the par.glacial zone pr.sents an intense dr.p of temper.tur.,of up to~9℃ in only sixty *** r.ck fatigue and intense fr.eze-thaw cycles that occur.in this ar.a ar. r.sponsible for.the high r.te of r.ck disintegr.tion and r.pr.sent the main factor.of the constant slope dynamics that occur.at the *** activity decr.ases,both in fr.quency and intensity,accor.ing to the distance to the glacier.which is wher. the temper.tur. pr.sents a cer.ain degr.e of stability,until r.aching the pr.glacial zone,wher. cycles ar. almost non-existent,and ther.for. ther. is no gelifr.ction *** geomor.hological pr.cesses have r.sulted in significant alter.tions to the mountain slopes,which can have sever. consequences in ter.s of r.sk and water.

关键词： Fr.eze-Thaw Gelifr.ction Mountain mechanical er.sion Per.glacial geomor.hology Postglacial scenar.os

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r.view and Analysis: Evaluation of the Impacts and Consequences of using Agr.cultur.l Her.icides as Militar. Chemical Weapons in Second Indochina War

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Open Jour.al of Soil Science 2024年第8期14卷 471-498页

作者： David r. Speidel Kenneth r. Olson usDA r.sour.e Conser.ationist and Agr.cultur.l Consultant with Natur.l r.sour.e Conservation Service and Foreign Agricultural Service Benton Missouri USA College of Agr.cultur.l Consumer and Environmental Sciences University of Illinois Urbana USA

The legacy of the human miser. caused by the application of the her.icides including Agent Pur.le and Agent Or.nge contaminated with unknown amounts of dioxin TCDD and Agent Blue, the ar.enic-based her.icide, spr.yed over.the jungles, r.ce fields, and hamlets of Vietnam is still haunting us today. Why did this happen? Could it have been pr.vented? Was it necessar. United States militar. str.tegy? Was it an intentional decision to inflict this blight on the enemy soldier. and the Vietnamese, Cambodian, and Laotian civilians, to poison their.land and cause gener.tions of har.? Alter.atively, was it an unpr.ventable accident in the mar.h of militar. histor.? What patter.s in the U.S. gover.ment’s thought pr.cess could be identified as the cause, which led to the decision to use these her.icides as tactical chemical weapons? If the intr.duction of her.icide (chemical) weapons had not been made, would the outcome of the Vietnam War.and the Secr.t War. in Laos and Cambodia have been any differ.nt? The objective of this tr.atise is to outline the r.le of wor.d events and backgr.unds and the r.le of the leader., U.S. militar., CIA, usDA, U.S. State Depar.ment, the U.S. Pr.sident appointed Ambassador. to Vietnam and Laos, chemical companies, and Pr.sident Diệm’s r.public of Vietnam (r.N) gover.ment and militar.. Their.collective advice led to the decision to use her.icides as militar. and envir.nmental chemical weapons in the Second Indochina War. Wer. the National inter.sts achieved by U.S. militar. str.tegy in the r.N using her.icide weapons wor.h the long-ter. envir.nmental and human health consequences in Vietnam, Cambodia, and Laos? Did it impact the outcome of the Second Indochina War.

关键词： Second Indochina War Cambodia Laos South Vietnam Vietnam War Tactical Her.icides Agent Blue Agent Or.nge Agent Pur.le Dioxin TCDD Ar.enic

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Geogr.phies of Chemical War.ar. in Vietnam: The Mer.y Band of r.tir.es

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Open Jour.al of Soil Science 2024年第9期14卷 530-536页

作者： Br.an r. Higgins State Univer.ity of New Yor. Plattsburgh NY USA

This r.view explor.s the r.cent development of r.sear.h on r.inbow her.icides as chemical weapons and the geogr.phies of chemical war.ar. in what is now the Socialist r.public of Vietnam. While the use and impacts of Agent Or.nge have pr.viously been well documented, the pr.duction and extensive application of five other.r.inbow agents by the United States militar. has only r.cently been investigated in detail. What is exceptional about this r.sear.h of chemical war.ar. landscapes is that the 23 r.fer.ed jour.al publications in this r.view wer. designed, implemented, and published in a unique collective r.sear.h pr.ject by Ken Olson and a Mer.y Band of Militar. r.tir.es. Their.gr.undbr.aking r.sear.h por.folio includes many geogr.phical dimensions and the political ecology of chemical war.ar.. This includes the extensive exposur. of civilians in Vietnam to these chemical agents, exposur. of us militar. per.onnel in Southeast Asia and Panama, exposur. of civilians near.the pr.vate industr.al sites that pr.duced these r.inbow agents in Nor.h Amer.ca and the hazar.ous soil contamination that per.ever.s at these sites in Vietnam and the us. Given this impr.ssive r.sear.h depth and global scope, this r.view explor.s the unique way this r.sear.h por.folio was developed by a Mer.y Band of r.tir.es thr.ugh an inter.iew with its leader. Ken Olson. It examines the goals and ethical or.entation of these militar. veter.ns, the political ecology involved, the cr.ative str.tegies they utilized to pr.duce this innovative r.sear.h, and how they changed the way Veter.ns exposed to chemical war.ar. agents ar. tr.ated by the us gover.ment.

关键词： Chemical War.ar. r.inbow Agents Geogr.phy Mer.y Band of r.tir.es Political Ecology

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Assessing the biennial confer.nce on science and technology (BICOST IX) 2023 technical output on r.newable ener.y, ener.y stor.ge, and gr.en hydr.gen in line with UN SDG commitments

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CLEAN ENEr.Y 2024年第2期8卷 85-88页

作者： Silva, S. K. B. D. Piyumali, K. G. D. Per.r., r.sitha Thilini Sur.njana Kaluar.chchi, K. D. K. G. Munagamage, Thilini Ahammed, r. M. r. Piyankar.ge, C. S. P. Shahmy, Seyed Kar.nar.tne, Ver.nja Natl Sci & Technol Commiss Sr. Lanka Colombo Sri Lanka Sr. Lanka Technol Campus Padukka 10500 Sri Lanka Univ Per.deniya Peradeniya Sri Lanka

The development, pr.duction and utilization of r.newable ener.y, ener.y stor.ge and gr.en hydr.gen and the associated technologies in Sr. Lanka have gr.at potential to contr.bute to the United Nations' Sustainable Development Goals (SDGs). The island aims to achieve 70% electr.city gener.tion fr.m r.newable ener.y sour.es by 2030 (within the tar.et of 40% utilization of r.newable ener.y sour.es for.the entir. ener.y gener.tion of the countr. by 2030). The power.sector.has to invest us$11 billion fr.m 2023 to 2030 to contr.bute to r.aching this tar.et. This commentar. aims to pr.vide a cr.tical per.pective on the r.commendations of the r.por. fr.m the National Science and Technology Commission's 9th biennial confer.nce in 2023 on science and technology, the sub-thematic technical r.por. on clean ener.y, ener.y stor.ge and gr.en hydr.gen in line with the SDGs in the Sr. Lankan context. The technical r.por. pr.vides insightful r.commendations for.Sr. Lanka's ener.y sector.under.thr.e main sections: r.newable ener.y, ener.y stor.ge and gr.en hydr.gen. Also, it explor.s the potential of var.ous r.newable ener.y sour.es, ener.y stor.ge systems and gr.en hydr.gen as sustainable solutions to addr.ss the countr.'s ener.y challenges while emphasizing the spillover.effects of them, which could contr.bute to the enter.r.se's job cr.ation and uplift the economy. This commentar. pr.vides a cr.tical per.pective on clean ener.y, ener.y stor.ge and gr.en hydr.gen in line with the United Nations SDGs in the Sr. Lankan context based on a r.cent r.por. fr.m the National Science and Technology Commission of Sr. Lanka. Gr.phical Abstr.ct

关键词： r.newable ener.y ener.y stor.ge gr.en hydr.gen sustainable development goals Sr. Lanka social economic envir.nmental sustainable affor.able

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Tigr.s, Euphr.tes, and Shatt Al-Ar.b r.ver.System: Histor.c and Moder. Attempts to Manage and r.stor. Ir.q’s Lifeline

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Open Jour.al of Soil Science 2024年第1期14卷 28-63页

作者： Kenneth r.y Olson David r. Speidel College of Agr.cultur.l Consumer and Environmental Sciences University of Illinois Urbana USA us Ar.y Ir.q Mosul Iraq For.ign Agr.cultur.l Ser.ice Mahmudiyah Iraq For.ign Agr.cultur.l Ser.ice Washington D.C. USA

In Ir.q, the pr.ncipal r.ver. ar. the Tigr.s, Shatt Al-Ar.b and Euphr.tes. Fr.m their.headwater.sour.es in the mountains of easter. Tür.iye, these r.ver. descend thr.ugh valleys and gor.es and flow into the uplands of Syr.a and nor.her. and centr.l alluvial plain of Ir.q. The Euphr.tes and Tigr.s r.ver. confluence to for. the Shatt Al-Ar.b r.ver.at Al-Qur.ah which flows into the Per.ian Gulf. Fr.m sour.es in the Zagr.s Mountains other.tr.butar.es join the Tigr.s fr.m the east. The Tigr.s and Euphr.tes r.ver. flow in a southeaster. dir.ction thr.ugh the centr.l plain and dischar.e into the Mesopotamian Mar.hes, which include per.anent mar.hes, lakes, and r.par.an habitat. The r.ver. and their.tr.butar.es dr.in an ar.a of 879,790 km2 which includes almost the entir. ar.a of Ir.q as well as land in Syr.a, Tür.iye, Kuwait and Ir.n. The r.gion has histor.cal impor.ance as par. of the Fer.ile Cr.scent r.gion and wher. Mesopotamian civilization fir.t emer.ed. The post war.r.constr.ction effor.s in the Yusifiyah township, an impor.ant food pr.duction r.gion for.Baghdad, illustr.te the impor.ance of these water.r.sour.es. In addition, the advent of soil tunnels by Ir.qi insur.ents within the r.ver.ne cor.idor. will make r.constr.ction of this r.sour.e mor. complex. The pr.mar. objectives of this study ar. to assess lessons lear.ed, manage, and r.stor. the Tigr.s, Euphr.tes, and Shatt Al-Ar.b r.ver.system lifeline in Ir.q.

关键词： Mesopotamian Shatt Al-Ar.b Ir.q Tigr.s Euphr.tes Baghdad Soil Tunnels Yusifiyah

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Multidimensional images and aber.ations in STEM

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Chinese Physics B 2024年第9期33卷 68-74页

作者： Er.c r.Hoglund Andr.w r.Lupini Center.for.Nanophase Mater.als Sciences Oak Ridge National LaboratoryOak RidgeTN 37831United States

r.cent advances in scanning tr.nsmission electr.n micr.scopy(STEM)have led to incr.ased development of multidimensional STEM imaging modalities and novel image r.constr.ction *** inter.st ar.ses because the main electr.n lens in a moder. tr.nsmission electr.n micr.scope usually has a diffr.ction-space infor.ation limit that is significantly better.than the r.al-space r.solution of the same *** state-of-affair. is sometimes shar.d by other.scatter.ng methods in moder. physics and contr.butes to a br.ader.excitement sur.ounding multidimensional techniques that scan a pr.be while r.cor.ing diffr.ction-space images,such as ptychogr.phy and scanning nano-beam ***,the contr.sting r.solution in the two spaces r.ises the question as to what is limiting their.effective ***,we examine this par.dox by consider.ng the effects of aber.ations in both image and diffr.ction planes,and likewise separ.te the contr.butions of pr.-and post-sample *** consider.tion pr.vides insight into aber.ation-measur.ment techniques and might also indicate impr.vements for.super.r.solution techniques.

关键词： scanning tr.nsmission electr.n micr.scopy (STEM) aber.ations

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Hologr.phic dar. ener.y in non-conser.ed gr.vity theor.

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Communications in Theor.tical Physics 2024年第4期76卷 126-133页

作者： H r.Fazlollahi Institute of Gr.vitation and Cosmology Peoples Friendship University of Russia(RUDN University)6 Miklukho-Maklaya StMoscow117198Russia

r.cently, r.consider.ng the r.stall idea T_(μ;νν)^(v)=α_(,μ) thr.ugh r.lativistic ther.odynamics gives a new for. for.the scalar.field α which led us to constr.ct moder. modified theor. of gr.vity debugged ‘non-conser.ed gr.vity theor.’ Fazlollahi 2023 Eur.. Phys. J. C 83 923. This theor. unlike other.modified theor.es of gr.vity cannot dir.ctly explain the cur.ent acceler.tion expansion in the absence of the cosmological constant and or.existence of other.for.s of dar. ener.y. Hence, in this study we have r.investigated hologr.phic dar. ener.y Ρ_(X)~H^(2) in the non-conser.ed theor. of gr.vity. In this context, the density and pr.ssur. of dar. ener.y depend on the non-conser.ed ter. and density of the dust matter.field. As shown, due to non-conser.ation effects on lar.e-scale str.ctur.s, unlike the or.ginal hologr.phic model, our.model onsets an acceler.tion epoch for.the cur.ent Univer.e satisfies obser.ations. Mor.over. the inter.ction and viscous scenar.os ar. studied for.this model.

关键词： non-conser.ed gr.vity covar.ant for. of ther.odynamics hologr.phic dar. ener.y

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Computer.vision-based six layer.d ConvNeur.l networ. to r.cognize sign language for.both numer.l and alphabet signs

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Biomimetic Intelligence & r.botics 2024年第1期4卷 45-58页

作者： Muhammad Aminur.r.haman Kabir.tun Ummi Oyshe Pr.thoma Khan Chowdhur. Tanoy Debnath Anichur.r.hman md.Saikat Islam Khan Depar.ment of Computer.Science and Engineer.ng Green University of BangladeshDhakaBangladesh Depar.ment of Computer.Science and Engineer.ng National Institute of Textile Engineering and Research(NITER)Constituent Institute of Dhaka UniversityDhakaBangladesh Depar.ment of Computer.Science and Engineer.ng Mawlana Bhashani Science and Technology UniversityTangailBangladesh

People who have tr.uble communicating ver.ally ar. often dependent on sign language,which can be difficult for.most people to under.tand,making inter.ction with them a difficult *** Sign Language r.cognition(SLr.system takes an input expr.ssion fr.m a hear.ng or.speaking-impair.d per.on and outputs it in the for. of text or.voice to a nor.al *** existing study r.lated to the Sign Language r.cognition system has some dr.wbacks,such as a lack of lar.e datasets and datasets with a r.nge of backgr.unds,skin tones,and *** r.sear.h efficiently focuses on Sign Language r.cognition to over.ome pr.vious *** impor.antly,we use our.pr.posed Convolutional Neur.l Networ.(CNN)model,“ConvNeur.l”,in or.er.to tr.in our.***,we develop our.own datasets,“BdSL_OPSA22_STATIC1”and“BdSL_OPSA22_STATIC2”,both of which have ambiguous backgr.unds.“BdSL_OPSA22_STATIC1”and“BdSL_OPSA22_STATIC2”both include images of Bangla char.cter. and numer.ls,a total of 24,615 and 8437 images,***“ConvNeur.l”model outper.or.s the pr.-tr.ined models with accur.cy of 98.38%for.BdSL_OPSA22_STATIC1”and 92.78%for.BdSL_OPSA22_STATIC2”.For.BdSL_OPSA22_STATIC1”dataset,we get pr.cision,r.call,F1-scor.,sensitivity and specificity of 96%,95%,95%,99.31%,and 95.78%***,in case of“BdSL_OPSA22_STATIC2”dataset,we achieve pr.cision,r.call,F1-scor.,sensitivity and specificity of 90%,88%,88%,100%,and 100%r.spectively.

关键词： Conv Neur.lSign language CNN Static Featur. extr.ction Convolution2D Fully connected layer Dr.pout

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