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Cracks Propagat.on as a Funct.on of Grain Size Variant. on Nanocryst.lline Mat.rials’ Yield St.ess Produced b. Accumulat.ve Roll-b.nding

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Advances in Mat.rials Physics and Chemist.y 2017年第2期7卷 58-69页

作者： P. b. Sob.A. A. Alugongo t. b. tengen Depart.ent.f Mechanical Engineering Faculty of Engineering and Technology Vaal University of Technology Vanderbijlpark South Africa Depart.ent.of Indust.ial Engineering and Operat.ons Management Faculty of Engineering and Technology Vaal University of Technology Vanderbijlpark South Africa

Cracks are usually ob.erved at.t.e edge of mat.rials deformed b. accumulat.ve roll b.nding from convent.onal mat.rials t. nanost.uct.re mat.rials. t.e ob.erved cracks t.en propagat. in t.e mat.rials during grain refinement. t.e cracks propagat.on affect. t.e yield st.ess and t.e effect.ve fract.re energy of nanocryst.lline mat.rials. In t.is st.dy, t.e impact. of crack propagat.on when measured as a funct.on of grain size variant. on nanocryst.lline mat.rials’ yield st.ess are invest.gat.d for a mat.rial deformed b. accumulat.ve roll-b.nding. t.e st.dy employs experiment.l dat. and t.eoret.cal concept. of severe plast.c deformat.on and cracks processes in nanocryst.lline mat.rials. t.e current.st.dies also focus on nano-cracks t.at.will not.lead t. rapid mat.rials failure during grain refinement. t.e st.dy revealed t.at.crack propagat.on varied as a funct.on of grain size variant. during grain refinement. t.e st.dy also revealed t.at.nano-crack increased during t.e deformat.on of nanost.uct.red mat.rials. t.e st.dy also revealed t.at.t.e effect.ve fract.re energy decreased as grain refinement.t.ok place. t.e st.dy revealed t.at.nanomat.rials yield st.ess decreased wit. t.e increase in effect.ve fract.re energy. t.e current.st.dy suggest. a t.eoret.cal model t.at.shows t.e generat.on of nanomat.rials cracks during grain refinement.as a funct.on of grain size variant.. In t.e model, t.e cracks propagat. on nanocryst.lline mat.rials due t. t.e compressive load applied t. a mat.rial. t.e model predict. t.at.t.e generat.on of cracks as funct.ons of grain size variant. impact. t.e energy level in nanocryst.lline mat.rials.

关键词： Nanost.uct.re Grain Size Variant. St.ess Crack Energy

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Compact.hain:an efficient.st.t.less chain for Ut.O-model b.ockchain

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Front.ers of Comput.r Science 2024年第2期18卷 167-179页

作者： b.Swaroopa REDDY t.Uday Kiran REDDY Depart.ent.of Elect.ical Engineering Indian Institute of Technology HyderabadHyderabadTelangana 502285India

In t.is work,we propose a st.t.less b.ockchain called Compact.hain,which compact. t.e ent.re st.t. of t.e Ut.O(Unspent.t.ansact.on Out.ut.b.sed b.ockchain syst.ms int. t.o RSA *** first.accumulat.r is called t.ansact.on Out.ut.t.O)commit.ent.which represent. t.e t.O *** second one is called Spent.t.ansact.on Out.ut.St.O)commit.ent.which represent. t.e St.O *** t.is work,we discuss t.ree algorit.ms:(i)t. updat. t.e t.O and St.O commit.ent. b. t.e *** miner also provides t.e proofs for t.e correct.ess of t.e updat.d commit.ent.;(ii)t. prove t.e t.ansact.on’s validit. b. providing a memb.rship wit.ess in t.O commit.ent.and non-memb.rship wit.ess against.St.O commit.ent.for a coin b.ing spent.b. a user;(iii)t. updat. t.e wit.ess for t.e coin t.at.is not.yet.spent.t.e experiment.l result. evaluat. t.e performance of t.e Compact.hain in t.rms of t.me t.ken b. a miner t. updat. t.e commit.ent. and t.me t.ken b. a validat.r t. verify t.e commit.ent. and validat. t.e *** compare t.e performance of Compact.hain wit. t.e exist.ng st.t.-of-t.e-art.works on st.t.less *** shows a reduct.on in commit.ent. updat. complexit. and t.ansact.on wit.ess size which int.rn reduces t.e mempool size and propagat.on lat.ncy wit.out.compromising t.e syst.m t.roughput.t.ansact.ons per second(t.S)).

关键词： st.t.less b.ockchain RSA Accumulat.r St.O commit.ent t.O commit.ent Ut.O Non-int.ract.ve Proof of Exponent.at.on(NI-PoE) t.ansact.ons per second(t.S)

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A Review on t.chnologies for t.e Use of CO2 as a Working Fluid in Refrigerat.on and Power Cycles

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Energy and Power Engineering 2024年第6期16卷 217-256页

作者： Orelien t. b.upda Hyacint.e D. t.ssemo Isidore b. Nkounda Fongang Francklin G. Nyami Frederic Lont.i t.omas Djiako Lab.rat.ry of Energy Higher National Polytechnic School of Douala University of Douala Douala Cameroon Inst.t.t.Ucac-Icam Douala Cameroon Depart.ent.of Energy and Mechanical Engineering ISTA-IUG University of Ngaoundere Ngaoundere Cameroon

t.e use of carb.n dioxide as a working fluid has b.en t.e sub.ect.of ext.nsive st.dies in recent.years, part.cularly in t.e field of refrigerat.on where it.is at.t.e heart.of research t. replace CFC and HCFC. It. t.ermodynamic propert.es make it.a fluid of choice in t.e efficient.use of energy at.low and medium t.mperat.res in engine cycles. However, t.e performance of t.anscrit.cal CO2 cycles weakens under high t.mperat.re and pressure condit.ons, especially in refrigerat.on syst.ms;On t.e ot.er hand, t.is disadvant.ge b.comes rat.er int.rest.ng in engine cycles where CO2 can b. used as an alt.rnat.ve t. t.e organic working fluid in small and medium-sized elect.ical syst.ms for low qualit. or wast. heat.sources. In order t. improve t.e performance of syst.ms operat.ng wit. CO2 in t.e field of refrigerat.on and elect.icit. product.on, research has made it.possib.e t. develop several concept., of which t.is art.cle deals wit. a review of t.e st.t. of t.e art. followed b. analyzes in-dept. and crit.cal of t.e various development. t. t.e most.recent.modificat.ons in t.ese fields. Det.iled discussions on t.e performance and t.chnical charact.rist.cs of t.e different.evolut.ons are also highlight.d as well as t.e fact.rs affect.ng t.e overall performance of t.e syst.ms st.died. Finally, perspect.ves on t.e fut.re development.of t.e use of CO2 in t.ese different.cycles are present.d.

关键词： Refrigerat.on Cycle Power Cycle Syst.m Performance t.anscrit.cal CO2 Cycles Working Fluid

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Lab.rat.ry evaluat.on of t.xicit. of select.d insect.cides against.egg and larval st.ges of cot.on pink b.llworm, Pect.nophora gossypiella (Saunders) (Lepidopt.ra: Gelechiidae)

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Journal of Cot.on Research 2024年第1期7卷 15-28页

作者： b.SNOOR Ab.ishek V. WADASKAR R.M. FAND b.b.saheb.b. t.Mb. V.J. PILLAI t. MAHULE D.J. NAGRARE V.S. PRASAD Y.G. Ent.mology Sect.on College of Agriculture(Dr.Panjabrao Deshmukh Krishi Vidyapeeth)Nagpur 440001MaharashtraIndia Indian Council of Agricult.ral Research-Cent.al Inst.t.t. for Cot.on Research Nagpur 441108MaharashtraIndia

b.ckground t.e crypt.c nat.re of pink b.llworm Pect.nophora gossypiella(Saunders)larvae enab.es it. reduced vul-nerab.lit. t. insect.cidal ***,t.e development.of resist.nce against.b.cillus t.uringiensis(b.0}t.xins posed a serious t.reat.t. t.ansgenic cot.on *** necessit.t.d det.rmining t.e crit.cal t.ming of spray applicat.ons on t.e cont.ol *** st.dy assessed t.e influence of egg age(freshly laid ***-day-old)and t.e loca-t.on of larvae(direct.y exposed t. t.e insect.cide residues on t.e b.ll rind *** inside t.e b.lls)on insect.cide cont.ol *** t.e result. revealed a significant.decrease in t.e ovicidal act.vit. of t.st.d insect.cides wit. an increase in t.e age of eggs from one day old t. t.ree days old(paired t.t.st.Pt.e larvae direct.y exposed t. t.e insec-t.cide residues on t.e b.ll rind were more suscept.b.e(>80%mort.lit.)t.an t.e larvae exposed aft.r t.ey had b.r-rowed inside t.e b.lls(t.lit.).t.e inhib.t.ry effect. of t.st.d insect.cides on development.l b.ology were more pronounced in t.e experiment.on pre-larval release insect.cide t.eat.ent.compared wit. insect.cide t.eat.ent.given post.larval release and ent.y inside t.e *** Egg age influences t.e insect.cide suscept.b.lit.,as does t.e larval locat.on,direct.y exposed vs b.r-rowed inside t.e *** eggs and t.e larvae t.at.had b.rrowed inside t.e green b.lls of cot.on were relat.vely less suscept.b.e t. t.e insect.cide *** t.xic effect. of insect.cides on egg and larval st.ges were primar-ily *** findings are significant.for devising a comprehensive st.at.gy for pink b.llworm management.on a sust.inab.e b.sis.

关键词： b.oefficacy Cot.on Insect.cides Pink b.llworm Pect.nophora gossypiella t.mings of spray

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EP Aquarii:A New Pict.re of t.e Circumst.llar Envelope

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Research in Ast.onomy and Ast.ophysics 2024年第3期24卷 83-105页

作者： Pham t.Nhung Do t.Hoai Pierre Darriulat.Pham t.an-Anh Pham N.Diep Nguyen b.Ngoc t.an t.t.ai Depart.ent.of Ast.ophysics Vietnam National Space CenterVietnam Academy of Science and Technology18Hoang Quoc VietNghia DoCau GiayHa Noivietnam

New analyses of earlier ALMA ob.ervat.ons of oxygen-rich AGb.st.r EP Aquarii are present.d,which complet. a previously pub.ished analysis and offer a different.int.rpret.t.on of t.e morpho-kinemat.cs of t.e circumst.llar *** b.rt. of t.e equat.rial densit. enhancement.EDE)is shown t. occur very close t. t.e st.r where evidence for rot.t.on has b.en *** t. t.e st.r and where out.lows have b.en ob.erved:t.eir int.ract.on wit. t.e gas of t.e nascent.EDE is seen t. play an import.nt.role in t.e development.of t.e wind and t.e evolut.on of it. radial velocit. from 8 t. 10 km s^(-1) on t.e polar symmet.y axis t.~2 km s^(-1) at.t.e *** implies complex morpho-kinemat.cs:making reliab.e int.rpret.t.ons wit. reasonab.e confidence is *** part.cular,it.quest.ons an earlier int.rpret.t.on implying t.e presence of a whit. dwarf companion orb.t.ng t.e st.r at.an angular dist.nce of -0″4 from it. *** proposes inst.ad an int.rpret.t.on in t.rms of a st.ndard mass eject.on associat.d wit. a shock wave leaving a void of emission in it. *** Doppler velocit. wings are seen t. consist.of t.o component.,t.e upper velocit. end of t.e glob.l wind,reaching ab.ve±12 km s^(-1),and an effect.ve line b.oadening,confined wit.in 200 mas from t.e cent.r of t.e st.r,reaching ab.ve±20 km s^(-1) and int.rpret.d as caused b. t.e pat.ern of shock waves result.ng from t.e int.ract.on b.t.een st.llar pulsat.on and convect.ve cell part.t.on.

关键词： st.rs AGb.and post.AGb.(st.rs) circumst.llar mat.er-radio lines st.rs

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Efficient.guiding and focusing of int.nse laser pulse using periodic t.in slit.

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Mat.er and Radiat.on at.Ext.emes 2024年第4期9卷 29-39页

作者： L.Xu t.W.Huang K.Jiang C.N.Wu H.Peng P.C.hen R.Li H.b.Zhuo C.t.Zhou Shenzhen Key Lab.rat.ry of Ult.aint.nse Laser and Advanced Mat.rial t.chnology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slit. have b.en widely used in laser-plasma int.ract.ons as plasma opt.cal component. for generat.ng high-harmonic light.and cont.olling laser-driven part.cle ***,we propose and demonst.at. t.at.periodic t.in slit. can b. regarded as a new b.eed of opt.cal element. for efficient.focusing and guiding of int.nse laser *** fundament.l physics of int.nse laser int.ract.on wit. t.in slit. is st.died,and it.is revealed t.at.relat.vist.c effect. can lead t. enhanced laser focusing far b.yond t.e pure diffract.ve focusing *** addit.on,t.e int.ract.on of an int.nse laser pulse wit. periodic t.in slit. makes it.feasib.e t. achieve mult.fold enhancement.in b.t. laser int.nsit. and energy t.ansfer efficiency compared wit. convent.onal *** result. provide a novel met.od for manipulat.ng ult.a-int.nse laser pulses and should b. of int.rest.for many laser-b.sed applicat.ons.

关键词： laser pulse int.nse

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覆盖UVA1的新型防晒剂MCE对色素和老化体征的影响:一项在两个不同遗传背景的人群进行的为期8周、随机、自身对照、前瞻性户外研究

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中华皮肤科杂志 2024年第6期57卷 579-580页

作者： F. Flament.D. G. Mercurio b. Muller J. Li C. t.icaud F. b.rnerd A. Roudot.D. Candau t. Passeron L'Oréal Research and Innovat.on Clichy France L'Oréal Research and Innovat.on Rio de Janeiro Brazil L'Oréal Research and Innovat.on Shanghai China L'Oréal Research and Innovat.on Aulnay-sous-Bois France L'Oréal Research and Innovat.on Chevilly-Larue France CHU Nice Department of Dermatology Université Côte d'Azur Nice France Universit. Côt. d'Azur INSERM U1065 C3M Nice France

一、引言在不同的紫外线(UV)波段中,长波UVA(UVA1,340~400nm)具有更高的皮肤穿透力,并且受气象条件和臭氧层厚度等环境参数的影响较小,因此更容易到达皮肤深部的真皮层,对细胞成分(如DNA、脂质和蛋白质)造成氧化损伤。UVA1已经越来越多... 详细信息

一、引言在不同的紫外线(UV)波段中,长波UVA(UVA1,340~400nm)具有更高的皮肤穿透力,并且受气象条件和臭氧层厚度等环境参数的影响较小,因此更容易到达皮肤深部的真皮层,对细胞成分(如DNA、脂质和蛋白质)造成氧化损伤。UVA1已经越来越多地被发现与衰老、致癌作用、多种皮肤疾病和色素问题相关。

关键词： UVA1 真皮层自身对照致癌作用皮肤疾病防晒剂遗传背景氧化损伤

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Heavy met.l pollut.on of river wat.r and eco-friendly remediat.on using pot.nt.microalgal species

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Wat.r Science and Engineering 2024年第1期17卷 41-50页

作者： Amudham Radha Amal Raj Prab.akaran Mylsamy V.Sivasankar b.Sat.ish Kumar Kiyoshi Omine t.G.Sunit.a Phycological Research Lab.rat.ry Research Department of BotanyPachaiyappa's College(Affiliated to University of Madras)Chennai 600030India Research Depart.ent.of Chemist.y Pachaiyappa's College(Affiliated to University of Madras)Chennai 600030India Depart.ent.of b.t.ny Sri Vidya Mandir Arts&Science College(Autonomous)KatteriUthangarai 636902India Depart.ent.of Civil Engineering School of Engineering.Nagasaki UniversityNagasaki-Daigaku1-14 Bunkyo-machiNagasaki 8528521Japan

Pollut.on of rivers is mainly caused b. ant.ropogenic act.vit.es such as discharge of effluent.from indust.ial facilit.es,maint.nance of sewage/effluent.t.eat.ent.plant.,and dumping of solid wast. on river *** st.dy dealt.wit. t.e pollut.on issues of t.e Cooum River in t.e well-known cit. of Chennai in Sout. *** samples from 27 locat.ons were collect.d and analyzed for 12 element.,including b.,b.and Al,as well as heavy met.ls such as Pb.Cr,Mn,Fe,Co,Ni,Cu,Zn,and *** samples showed levels of t.ese element. t.at.exceeded World Healt. Organizat.on *** correlat.on analysis revealed t.e int.r-dependency among element.,and t.e cont.ib.t.on of each element.b.sed on fact.r loadings showed it. percent.ge cont.ib.t.on compared t. *** samples from six significant.locat.ons were chosen for remediat.on wit. t.ree algae:Chlorella vulgaris,Scenedesmus dimorphus,and Phormedium *** upt.ke of pollut.nt. led t. t.e cont.nuous growt. of algae during t.e incub.t.on period of 15 d,effect.vely removing heavy met.ls from t.e river *** increasing levels of algal count. and t.e chlorophyll a cont.nt.confirmed t.e algal growt. during t.e incub.t.on period,followed b. a declining st.ge aft.r t.e incub.t.on *** scanning elect.on microscopic images of algae b.fore and aft.r t.e remediat.on showed no remarkab.e modificat.on of morphological *** st.dy showed t.at.t.e upt.ke of heavy met.ls using algae is an effect.ve wat.r pollut.on remediat.on measure,making t.e process pract.cab.e in t.e field on a large scale in t.e near fut.re.

关键词： Heavy met.l Cooum river Phycoremediat.on Microalgae Fact.r analysis

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Recovery rat.s of persist.nt.post.COVID-19 olfact.ry dysfunct.on using psychophysical assessment.A longit.dinal cohort.st.dy

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World Journal of Ot.rhinolaryngology-Head and Neck Surgery 2024年第2期10卷 79-87页

作者： Jeremy P.t.rvo Pat.icia t.Jacob.on b.andon J.Vilarello t.ana M.Saak Francesco F.Caruana Liam W.Gallagher Joseph b.Gary David A.Gudis Paule V.Joseph D.P.Devanand t.rry E.Goldb.rg Jonat.an b.Overdevest Columb.a Universit. Vagelos College of Physicians and Surgeons New YorkNew YorkUSA Depart.ent.of Ot.laryngology-Head and Neck Surgery New York-Presbyterian/Columbia University Irving Medical CenterNew YorkNew YorkUSA Depart.ent.of Ot.laryngology-Head and Neck Surgery University of PittsburghPittsburghPennsylvaniaUSA Depart.ent.of Ot.laryngology-Head and Neck Surgery University of MinnesotaMinneapolisMinnesotaUSA Nat.onal Inst.t.t. of Alcohol Ab.se and Alcoholism Section of Sensory Science and Metabolism&National Institute of Nursing ResearchBethesdaMarylandUSA New York-Presb.t.rian/Columb.a Universit. Irving Medical Cent.r New YorkNew YorkUSA

Ob.ect.ves:Persist.nt.olfact.ry dysfunct.on(OD)following loss of smell associat.d wit. SARS-CoV-2 infect.on is a major feat.re of long *** on t.e prevalence of persist.nt.OD predominant.y rely on self-report.d olfact.ry *** st.dies have t.acked longit.dinal rat.s of recovery using psychophysical assessment.among pat.ent. present.ng for evaluat.on of persist.nt.OD b.yond a window of acut. *** anchored in st.ndardized t.st.ng met.ods are needed t. counsel pat.ent. who fail t. acut.ly regain t.eir sense of *** st.dy aims t. quant.fy t.e degree of persist.nt.OD in post.COVID-19 pat.ent. who experience sub.ect.ve and psychophysical ***:We grouped part.cipant. present.ng for OD evaluat.on int. cohort. b.sed on b.t. sub.ect.ve and psychophysical olfact.ry st.t.s at.a b.seline assessment.and assessed t.eir olfact.ry ab.lit.es wit. a visual analogue scale and t.e Sniffin'St.cks ext.nded t.st.at.b.seline and 1-year t.me *** had confirmed a hist.ry of COVID-19 b. lab.evaluat.on or clinical diagnosis if lab.evaluat.on was not.***:b.seline olfact.ry evaluat.on was complet.d b. 122 part.cipant.,53 of whom complet.d t.e 1-year follow-up *** part.cipant. present.ng wit. perceived OD,74.5%had confirmed psychophysical OD at.b.seline,wit. 55.1%at.1-year *** had reliab.e t.ends in self-rat.d versus psychophysically t.st.d olfact.ry funct.on at.b.t. t.me *** t.t.l t.reshold,discriminat.on,and ident.ficat.on(t.I)score improved b.+3.25 point. in t.e cohort.wit. psychophysical OD(p=0.0005),wit. t.is improvement.largely at.rib.t.b.e t. an increase in median t.reshold scores(+2.75 point.;p=0.0004).Conclusions:OD persist. in a significant.numb.r of pat.ent. who fail t. acut.ly recovery t.eir sense of smell aft.r COVID-19,wit. many demonst.at.ng lingering deficit. at.*** in t.reshold,b.t.not.discriminat.on or ident.ficat.on,most.significant.y mediat. improvement

关键词： long COVID olfact.on post.COVID condit.on smell dysfunct.on

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Generalized t.me-dependent.generat.r coordinat. met.od for induced fission dynamics

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Front.ers of physics 2024年第4期19卷 1-12页

作者： b.Li D.Vret.nar t.Nikšić J.Zhao P.W.Zhao J.Meng St.t. Key Lab.rat.ry of Nuclear Physics and t.chnology School of PhysicsPeking UniversityBeijing 100871China Physics Depart.ent Faculty of ScienceUniversity of Zagreb10000 ZagrebCroatia Cent.r for Circuit. and Syst.ms Peng Cheng LaboratoryShenzhen 518055China

t.e generalized t.me-dependent.generat.r coordinat. met.od(t.-GCM)is ext.nded t. include pairing *** correlat.d GCM nuclear wave funct.on is expressed in t.rms of t.me-dependent.generat.r st.t.s and weight.*** part.cle–hole channel of t.e effect.ve int.ract.on is det.rmined b. a Hamilt.nian derived from an energy densit. funct.onal,while pairing is t.eat.d dynamically in t.e st.ndard b.S approximat.on wit. t.me-dependent.pairing t.nsor and single-part.cle occupat.on *** t.e inclusion of pairing correlat.ons,various t.me-dependent.phenomena in open-shell nuclei can b. describ.d more *** model is applied t. t.e descript.on of saddle-t.-scission dynamics of induced *** generalized t.-GCM charge yields and t.t.l kinet.c energy dist.ib.t.on for t.e fission of 240Pu,are compared t. t.ose ob.0}ined using t.e st.ndard t.me-dependent.densit. funct.onal t.eory(t.-DFt.approach,and wit. availab.e dat..

关键词： nuclear densit. funct.onal t.eory generat.r coordinat. met.od fission dynamics

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