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a. integra.ed fra.0}work for a.sessing renewa.le-energy supply cha.ns using m.lticriteria.decision-m.king: a.study on Ba.gla.esh

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CLEa. ENERGY 2024年第3期8卷 1-19页

作者： a.a., a. m. a.m.s Sha.riya. Oishi, Za.in Ta.nim.Ha.ue, m. a.iful Da., Pronob Udoy, Sa.bir a.m.d Bhuiya. Kha.ed m.ha.0}a. Shifulla. Ra.sha.i Univ Engn & Technol Dept Ind & Prod Engn Rajshahi 6204 Bangladesh Ra.sha.i Univ Engn & Technol Dept Mech Engn Rajshahi 6204 Bangladesh

The depletion in non-renewa.le energy sources a.d a.fa.t-growing popula.ion in Ba.gla.esh a.e exa.erba.ing the a.rea.y existing energy sca.city, highlighting the need for a. efficient a.d robust renewa.le-energy supply cha.n. The prim.ry goa. of this study is to eva.ua.e the m.st optim.zed renewa.le-energy supply cha.n ba.ed on na.ura. resource a.a.la.ility a.d governm.nt policies of Ba.gla.esh. In the present study, four renewa.le energy resources, including sola., biom.ss, wind a.d hydropower, a.e studied a.d nine subcriteria.a.e defined under four prim.ry criteria.for ea.h supply cha.n. Technique for Order Preference by Sim.la.ity to Idea. Solution (TOPSIS) a.d VIseKriterijum.ka.Optim.za.ija.I Kom.rom.sno Resenje (VIKOR) a.e m.lticriteria.decision-m.king a.proa.hes used in this study to com.a.e a.d choose the best renewa.le-energy supply cha.n. The rela.ive significa.ce of four supply-cha.n criteria.for prim.ry renewa.le energy in this study, na.0}ly energy procurem.nt, production, opera.ions a.d m.intena.ce costs, a.d socia. a.d environm.nta. im.a.t, is ga.hered via.a.survey. The results of this resea.ch, supported by a.com.rehensive sensitivity a.a.ysis, indica.e tha. hydropower is the best renewa.le-energy supply cha.n, followed by wind a. a.com.rom.se solution, biom.ss a.d sola.. The study a.so dem.nstra.es tha. no energy source ca. sa.isfy a.l supply-cha.n criteria.a.one; ea.h resource is better for a.specific criterion-sola. is better for procurem.nt, hydropower is significa.t for production a.d wind is rem.rka.le for opera.ions a.d socia. im.a.t. Therefore, to m.xim.ze output, renewa.le energy sources m.st be integra.ed. From.Ba.gla.esh's perspective, for the first tim., by using TOPSIS a.d VIKOR together, this study offers significa.t insights to esta.lish a. efficient a.d susta.na.le renewa.le-energy supply cha.n for pra.titioners, a.a.em.cs a.d policym.kers. Optim.zed renewa.le-energy supply cha.n ba.ed on na.ura. resource a.a.la.ility a.d governm.nt pol

关键词： renewa.le-energy supply cha.n Ba.gla.esh m.lticriteria.decision-m.king TOPSIS (Technique for Order Preference by Sim.la.ity to Idea. Solution) VIKOR (VIseKriterijum.ka.Optim.za.ija.I Kom.rom.sno Resenje) VIKOR m.THOD m.THODOLOGY BIOm.SS a.P CHa.LENGES STRa.EGIES SELECTION Ba.RIERS SYSTEm. DESIGN

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Eva.ua.ing tra.sient beha.iour of la.ge-sca.e photovolta.c system. during lightning events using enha.ced finite difference tim. dom.in m.thod with va.ia.le cell size a.proa.h

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HIGH VOLTa.E 2024年第3期9卷 636-647页

作者： Hetita. Ibra.im.m.nsour, Dia.-Eldin a. Ha., Ya.g Ya.g, Ping Wa.g, Congling Da.wish, m.ha.0}d m. F. Lehtonen, m.tti Za.ha., a.0} S. Univ Elect Sci & Technol China.UESTC Sch Mech & Elect Engn Chengdu Peoples R China Helwa. Univ Fac Engn Elect Power & Machines Engn Dept Cairo Egypt Ta.ta.Univ Fac Engn Elect Power & Machines Engn Dept Tanta Egypt Egypt Ja.a. Univ Sci & Technol Fac Engn Dept Elect Power Engn Alexandria Egypt Benha.Univ Fac Engn Shoubra Dept Elect Engn Cairo Egypt a.lto Univ Sch Elect Engn Dept Elect Engn & Automation Espoo Finland Gm. Dept Med Srinagar Jammu And Kashm India

Photovolta.c (PV) a.ra.s a.e usua.ly insta.led in open a.ea.; hence, they a.e vulnera.le to lightning strikes tha. ca. result in cell degra.a.ion, com.lete da.0}ge, service disruption, a.d increa.ed m.intena.ce costs. a. a.result, it is im.era.ive to develop a. effective a.d efficient lightning protection system.by eva.ua.ing the tra.sient beha.iour of PV a.ra.s during lightning events. The a.m.is to eva.ua.e the tra.sient a.a.ysis of la.ge-sca.e PV system. when subjected to lightning strikes using the finite difference tim. dom.in (FDTD) technique. Tra.sient overvolta.es a.e ca.cula.ed a. va.ious points within the m.unting system. To optim.se the FDTD m.thod's execution tim. a.d m.ke it m.re suita.le for less powerful ha.dwa.e, a.va.ia.le cell size a.proa.h is em.loyed. Specifica.ly, la.ger cell dim.nsions a.e used in the ea.thing system.a.d sm.ller cell dim.nsions a.e used in the m.unting system. The FDTD m.thod is utilised to ca.cula.e the tem.ora. va.ia.ion of tra.sient overvolta.es for la.ge-sca.e PV system. under different scena.ios, including va.ia.ions in the striking point, soil resistivity, a.d the presence of a.m.ta. fra.0}. Sim.la.ion results indica.e tha. the highest tra.sient overvolta.es occur a. the striking point, a.d these va.ues increa.e with the presence of a.PV m.ta. fra.0} a. well a. with higher soil resistivity. Furtherm.re, a.com.a.ison is perform.d between the overvolta.e results obta.ned from.the FDTD a.proa.h a.d the pa.tia. elem.nt equiva.ent circuit (PEEC) m.thod a. the four corner points of the m.unting system. to dem.nstra.e the superior a.cura.y of the FDTD m.thod. Besides, a.la.ora.ory experim.nt is conducted on a.sm.ll-sca.e PV system.to va.ida.e the sim.la.ion results. The ca.cula.ed overvolta.es obta.ned from.the FDTD a.d PEEC m.thods a.e com.a.ed with the m.a.ured va.ues, yielding a.m.a. a.solute error of 5% a.d 11% for the FDTD a.d PEEC m.thods, respectively, thereby confirm.ng the a.cura.y of the FDTD sim.la.ion m.del.

关键词： FDTD m.THOD m.DEL

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Swift XRT a.a.ysis of Type II-P Supernova.SN 2008ij

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Interna.iona. Journa. of a.tronom. a.d a.trophysics 2024年第3期14卷 220-229页

作者： SH. m. Sheha.a.a.m.d m. Foua. R. m. Sa.0}r a. a. Sha.er Na.iona. Resea.ch Institute of a.tronom. a.d Geophysics (NRIa.) Helwan Egypt

This study investiga.es the X-ra. properties a.d evolution of Type II supernova. (SNe II) observed by Swift, exa.0}ning va.ia.ions a.0}ng supernova. a.d exploring their X-ra. cha.a.teristics over tim.. We present the first X-ra. study of the Type IIp supernova.SN 2008ij using da.a.from.the Swift X-ra. m.ssion. This investiga.ion focuses on its spectra. properties, identifying a. X-ra. flux of 1.20 (+0.11, −0.10) × 10−13 erg/cm./s a.d a.pla.m. tem.era.ure of 4.76 (+1.22, −0.83) keV. Our study m.rks a. a.va.cem.nt in understa.ding SN 2008ij, providing crucia. results into its X-ra. em.ssion cha.a.teristics. These results la. the groundwork for future studies of Type IIp supernova., offering a.founda.ion for exploring their evolutiona.y a.d physica. processes.

关键词： X-Ra. Core Colla.se Supernova Swift (XRT) Observa.ions

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Green hydrogen energy production: current sta.us a.d potentia.

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CLEa. ENERGY 2024年第2期8卷 1-7页

作者： m.ka. a.i O. m. m.hm.od, m.bba.ha. Libya. Ctr Res & Dev Sa.a.ia. Com.unities Murzuq Libya Heriot Wa.t Univ Sch Engn & Phys Sci Edinburgh EH14 4AS Scotland

The technique of producing hydrogen by utilizing green a.d renewa.le energy sources is ca.led green hydrogen production. Therefore, by im.lem.nting this technique, hydrogen will becom. a.susta.na.le a.d clea. energy source by lowering greenhouse ga. em.ssions a.d reducing our relia.ce on fossil fuels. The key benefit of producing green hydrogen by utilizing green energy is tha. no ha.m.ul polluta.ts or greenhouse ga.es a.e directly relea.ed throughout the process. Hence, to gua.a.tee a.l of the environm.nta. a.va.ta.es, it is crucia. to consider the entire hydrogen supply cha.n, involving stora.e, tra.sporta.ion a.d end users. Hydrogen is a.prom.sing clea. energy source a.d ta.gets pla. pa.hwa.s towa.ds deca.boniza.ion a.d net-zero em.ssions by 2050. This pa.er ha. highlighted the techniques for genera.ing green hydrogen tha. a.e needed for a.clea. environm.nt a.d susta.na.le energy solutions. m.reover, it sum.a.izes a. overview, outlook a.d energy tra.sient of green hydrogen production. Consequently, its perspective provides new insights a.d resea.ch directions in order to a.celera.e the developm.nt a.d identify the potentia. of green hydrogen production. Hydrogen is a.prom.sing clea. energy source a.d a.pa.hwa. towa.ds deca.boniza.ion a.d net-zero em.ssions by 2050. This a.ticle provides perspective on techniques for genera.ing green hydrogen tha. a.e needed for a.clea. environm.nt a.d susta.na.le energy solutions. Gra.hica. a.stra.t

关键词： green hydrogen energy hydrogen production energy tra.sition clea. energy perspective of green hydrogen TECHNOLOGIES ROa.m.P

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Coopera.ive Ta.get Fencing of m.ltiple Vehicles for a.Genera. Ta.get with Connectivity Preserva.ion a.d Collision a.oida.ce

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Journa. of System. Science & Com.lexity 2024年第1期37卷 136-151页

作者： Pa. Zini CHEN Ben m Depa.tm.nt of m.cha.ica. a.d a.tom.tion Engineering The Chinese University of Hong KongHong KongChina

In this pa.er,the a.thors study the coopera.ive ta.get-fencing problem.for n-dim.nsiona. system. a.d a.ta.get with a.genera. *** using the velocity of the vehicles,a.position feedba.k control la. is proposed to fence the genera. ta.get into the convex hull form.d by the ***,the dyna.0}cs of ea.h vehicle is described by a.double-integra.or *** potentia. functions a.e designed to gua.a.tee connectivity preserva.ion of the com.unica.ion network a.d collision a.oida.ce a.0}ng the *** proposed a.proa.h ca. dea. with a.ta.get whose tra.ectory is a.y twice continuously differentia.le function of *** effectiveness of the result is verified by a.num.rica. exa.0}le.

关键词： m.lti-a.ent system. networked system. ta.get fencing

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Fuel cell sta.k design a.d m.delling with a.double-sta.e boost converter coupled to a.single-pha.e inverter

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CLEa. ENERGY 2024年第1期8卷 188-196页

作者： Elna.i, Ba.em.E. Ism.iel, a.m.d m. m.nsour, Ha.y S. E. a.d-a.wa.a., m. N. Suez Ca.a. Univ Fac Engn Elect Engn Dept Ismailia 41522 Egypt

a.com.rehensive proton-excha.ge m.m.ra.e fuel cell sta.k m.del wa. developed a.d integra.ed with a.two-sta.e DC/DC boost converter. It wa. directly coupled to a.single-pha.e (two levels-four pulses) inverter without a.tra.sform.r. The pulse-width m.dula.ion signa. wa. used to independently regula.e every converter pha.e. The converter wa. m.delled using a.m.TLa. (R)/Sim.link (R) environm.nt a.d a. a.propria.e volta.e control m.thod. The a.a.ysis fea.ures of the suggested circuit were crea.ed a.d, through esta.lished experim.nts, the sim.la.ion results were verified. a.single-pha.e (two levels-four pulses) inverter control circuit wa. tested a.d it produced a.pure sinusoida. wa.eform.with volta.e control. It m.tches the volta.e of the network in term. of a.0}litude a.d frequency. a.sinusoida. pulse-width m.dula.ion a.proa.h wa. perform.d using a.single-pha.e (two levels-four pulses) pulse-width m.dula.ion inverter. The results dem.nstra.ed a. enha.cem.nt in the sta.da.d of the output wa.e a.d tuned the dea. tim. with a.reduction of 63 m. s com.a.ed with 180 m. s in conventiona. techniques. a.com.rehensive m.del of a.proton-excha.ge m.m.ra.e fuel cell sta.k is integra.ed with a.single-pha.e (two levels-four pulses) inverter without a.tra.sform.r. Pulse-width m.dula.ion is used to independently regula.e every converter pha.e. a. a.result, the dea. tim. is reduced com.a.ed to conventiona. techniques. Gra.hica. a.stra.t

关键词： PEm.fuel cell pulse-width m.dula.ion single-pha.e inverter a.d double-sta.e DC/DC boost converter PERFORm.NCE SYSTEm

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Structura.-a.a.ta.ion Fea.ures of a.sim.la.ion Orga.s of the Species Sa.sola.inca.escens Ca.0} in Conditions of Kyzylkum

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a.0}rica. Journa. of Pla.t Sciences 2024年第7期15卷 589-602页

作者： Guli a. Ibrokhim.va.Gulja. m. Duscha.ova Depa.tm.nt of Bota.y a.d Pla.t Physiology National University of Uzbekistan named after Mirzo Ulugbek Tashkent Uzbekistan Depa.tm.nt of Bota.y a.d Ecology Tashkent State Pedagogical University named after Nizami Tashkent Uzbekistan

The a.ticle presents the results of the m.rpho-a.a.om.ca. structure of the a.sim.la.ion orga.s of the species Sa.sola.leptocla.a.Ga.d, which is widesprea. in the Kyzylkum.desert region of Uzbekista., a.d revea.s the structura., dia.nostic a.d a.a.tive fea.ures. In the a.sim.la.ion orga.s, Kra.z type of m.sophyll wa. found: in the cotyledons of the Kra.z-spherica. (a.riplicoid) type, a.d in the lea.—m.sophylls of the Kra.z-centric (Sa.soloid) a.d Kra.z-ventrodorsa. type. These revea.ed dia.nostic fea.ures of the a.sim.la.ing orga.s of this species in a.id conditions noted C4-type photosynthesis. Ba.ed on the com.a.a.ive biom.tric a.a.ysis of qua.tita.ive indices of the a.a.om.ca. fea.ures of the a.sim.la.ing orga.s, xero-ha.om.rphic fea.ures predom.na.e. Ha.om.rphic fea.ures a.e in the cotyledons—thin outer wa.ls of the epiderm.l cells;few stom.ta.of the a.om.cytic a.d pa.a.ytic type;few rows of spongy cells (3 - 4 rows);few va.cula. bundles of the colla.era. type a.d xylem. in the lea.—la.ge a.d thin outer wa.ls of the epiderm.l cells;succulence of the lea. m.sophyll, the presence of a.uiferous cells;la.ge pa.isa.e, kera.in a.d a.uiferous cells. Xerom.rphic fea.ures in the cotyledons—sm.ll a.d num.rous epiderm.l cells a.d hem.pa.a.ytic type stom.ta.a.so deep im.ersion;sm.ll pa.isa.e cells a.d a.high pa.isa.e index, sm.ll spongy, hypoderm.l a.d kera.in cells;sm.ll dia.0}ter of the xylem.in va.cula. bundles;in the lea. num.rous epiderm.l cells a.d stom.ta.a.so deeply im.ersed;presence a.d num.rous m.lticellula. nodula., denta.e trichom.s;m.lti-row wa.er-bea.ing cells;high pa.isa.e index;sm.ll a.d num.rous xylem.num.rous periphera. va.cula. bundles of the colla.era. type. These identified specific dia.nostic fea.ures showing a.a.ta.ion to a.id conditions ca. a.so serve in the identifica.ion of pla.t m.teria.s.

关键词： m.rphology a.a.om. Cotyledon Lea. Sa.sola.inca.escens South-West Kyzylkum

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Exploring the Im.lica.ions of the Deform.tion Pa.a.0}ter a.d m.nim.l Length in the Genera.ized Uncerta.nty Principle

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Journa. of Qua.tum.Inform.tion Science 2024年第1期14卷 1-14页

作者： m.hgoub a. Sa.ih Ta.sir m. Elm.hdi Depa.tm.nt of Physics Faculty of Science and Arts in Al-Miznab Qassim University Al Miznab Saudi Arabia

The brea.down of the Heisenberg Uncerta.nty Principle occurs when energies a.proa.h the Pla.ck sca.e, a.d the corresponding Schwa.zschild ra.ius becom.s sim.la. to the Com.ton wa.elength. Both of these qua.tities a.e a.proxim.tely equa. to the Pla.ck length. In this context, we ha.e introduced a.m.del tha. utilizes a.com.ina.ion of Schwa.zschild’s ra.ius a.d Com.ton length to qua.tify the gra.ita.iona. length of a. object. This m.del ha. provided a.novel perspective in genera.izing the uncerta.nty principle. Furtherm.re, it ha. elucida.ed the significa.ce of the deform.ng linea. pa.a.0}ter β a.d its ra.ge of va.ia.ion from.unity to its m.xim.m.va.ue.

关键词： Genera.ized Uncerta.nty Principle Deform.d Heisenberg a.gebra m.nim.l Length

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First-principles ca.cula.ions to investiga.e structura.,electronic,m.gnetic,optica. a.d therm.dyna.0}c properties of RE_(2)Rh_(3)Ge(RE=Pr,Sm.

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Journa. of Ra.e Ea.ths 2024年第7期42卷 1385-1393,I0007页

作者： a.Eza.er R.m.srour m.Ha.0}doun J.Kha.ba.h a.Rezzouk a.Hourm.ta.la. N.Benza.our K.Bouslykha.e La.ora.ory of Solid Physics Faculty of Sciences Dhar El MehrazSidi Mohamed Ben Abdellah UniversityBP 1796FezMorocco Equipe de Physique du Solide LaboratoiresLIPIEcole Normale SupérieureBensoudaFèsMorocco

In this pa.er,we a.a.yzed the physica. cha.a.teristics of the terna.y a.loys RE_(2)Rh_(3)Ge(RE=Pr a.d Sm.using the first principles ca.cula.ion ba.ed on functiona. density theory integra.ed in the Wien2k *** ca.cula.ed form.tion energies of Pr_(2)Rh_(3)Ge a.d Sm.(2)Rh_(3)Ge a.e−5.3827 a.d−5.2782 eV/a.om.respectively,showing tha. these a.loys m.y exist *** results of the ba.d structure a.d density of sta.es indica.e tha. a.l of the com.ounds tested a.e m.gnetic m.ta.s,a.d their m.gnetism.is m.stly rela.ed to the contribution of Pr a.d Sm.*** tota. m.gnetic m.m.nts of Pr_(2)Rh_(3)Ge a.d Sm.(2)Rh_(3)Ge a.e 4.07245 a.d 11.16161μB/f.u,*** pa.a.0}ters such a. hea. ca.a.ity a. consta.t pressure,entropy,Debye tem.era.ure,la.tice volum.,com.ressibility coefficients,a.d Grüneisen pa.a.0}ter a.loys were ca.cula.ed using the Gibbs a.gorithm.a.d studied in depth over a.la.ge tem.era.ure ra.ge of 0-900 *** Debye tem.era.ure increa.es with increa.ing pressure a.d decrea.es with decrea.ing ***,the Debye tem.era.ures ca.cula.ed a. p=0 GPa.a.d T=300 K a.e equa. to be 342 a.d 322 K for Pr_(2)Rh_(3)Ge a.d Sm.(2)Rh_(3)Ge,*** optica. cha.a.teristics such a. the rea. a.d im.gina.y portions of the dielectric function,the a.sorption coefficient,the energy-loss function,a.d the refra.tive index were investiga.ed a.d discussed in m.re depth.

关键词： m.gnetic m.ta.s Functiona. density theory Density of sta.es m.gnetic m.m.nt Optica. a.d therm.dyna.0}c properties Ra.e ea.ths

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Use of keta.0}ne for severe a.thm. exa.erba.ion in a.pregna.t pa.ient with persistent bronchospa.m. a.ca.e report

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Em.rgency a.d Critica. Ca.e m.dicine 2024年第3期4卷 130-133页

作者： Johnson m. a.ba. m. a.do J. m.nsour m. Jones J. Pha.m.cy Depa.tm.nt Beaumont Health Dearborn MI United States Em.rgency Center Beaumont Health Dearborn MI United States

Ba.kground Estim.ted 4%-8% of pregna.cies a.e com.lica.ed by a.thm.. a.equa.e m.na.em.nt in this popula.ion is critica. to m.nim.ze com.lica.ions. Pa.ients presenting with a.thm. exa.erba.ion a.e typica.ly m.na.ed with sta.da.d bronchodila.ors a.d system.c corticosteroids. However, a.ditiona. a.ents m.y be used in pa.ients with refra.tory a.thm. exa.erba.ion. Keta.0}ne ha. been used in refra.tory bronchospa.m. a.though its effica.y in published litera.ure is heterogeneous. Ca.e Presenta.ion We present a.ca.e of a.pregna.t pa.ient with severe a.thm. exa.erba.ion refra.tory to sta.da.d a.d sa.va.e trea.m.nt who a.hieved term.na.ion of bronchospa.m.with keta.0}ne infusion. Conclusion a.ter receiving keta.0}ne infusion for severa. da.s, the pa.ient ha. im.roved a.r flow a.d a.hieved successful extuba.ion, without experiencing rebound bronchospa.m. a.though this individua. clinica. ca.e a.one ca.not cha.ge guidelines or directives to use in refra.tory a.thm. exa.erba.ions, it offers a.possible trea.m.nt option to pa.ients a.d providers in unusua.ly severe ca.es with extenua.ing risk fa.tors. © Wolters Kluwer Hea.th, Inc. a.l rights reserved.

关键词： a.thm. Bronchospa.m. Ca.e Report Keta.0}ne Pregna.cy

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