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Ra.leig.-Ta.lor Insta.ility in Ma.0}etized Pla.ma

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World Journa. of Mecha.ics 2014年第8期4卷 260-272页

作者： g. a. hoshoudy Depa.tment of a.plied Ma.hema.ics a.d Computer Science Faculty of Science South Valley University Kena Egypt

The Ra.leig.-Ta.lor insta.ility in stra.ified pla.ma.ha. been investig.ted in the presence of combined effect of horizonta. a.d vertica. ma.0}etic field. The linea. g.owth ra.e ha. been derived for the ca.e where pla.ma.with exponentia. density distribution is confined between two rig.d pla.es by solving.the linea. MHD equa.ions into norma. mode. Some specia. ca.es ha.e been pa.ticula.ized to expla.n the roles the va.ia.les of the problem pla.;numerica. solutions ha.e been ma.e a.d some sta.ility dia.0}a.s a.e plotted a.d discussed. The results show tha., the g.owth ra.e depends on the horizonta. a.d vertica. components of ma.0}etic field a.d a.so depends on the pa.a.eter λ*=λLD ?(λ is consta.t a.d LD is the density-sca.e leng.h). The ma.imum insta.ility ha.pens a. λ*=-0.5 a.d to g.t more sta.ility model we select?λ* such tha. it is different tha.?λ*=-0.5. The vertica. ma.0}etic field component ha.e a.g.ea.er effect tha. the horizonta. ma.0}etic field component in the ca.e of la.g. wa.eleng.h, while in the ca.e of short wa.eleng.h, the horizonta. ma.0}etic field components ha.e g.ea.er effect tha. the vertica. ma.0}etic field component.

关键词： Ra.leig.-Ta.lor Insta.ility Pla.ma Horizonta. a.d Vertica. Ma.0}etic Field

Externa. Ma.0}etic Field Effects on the Ra.leig.-Ta.lor Insta.ility in a. Inhomog.neous Rota.ing.Qua.tum Pla.ma

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Journa. of Modern Physics 2012年第11期3卷 1792-1801页

作者： g. a. hoshoudy Depa.tment of a.plied Ma.hema.ics Faculty of Science South Valley University Qena Egypt

The effects of externa. ma.0}etic field effects on the Ra.leig.-Ta.lor insta.ility in a. inhomog.neous stra.ified qua.tum pla.ma.rota.ing.uniformly a.e investig.ted. The externa. ma.0}etic field is considered in both horizonta. a.d vertica. direction. The linea. g.owth ra.e is derived for the ca.e where a.pla.ma.with exponentia. density distribution is confined between two rig.d pla.es a. z=0 a.d z=h, by solving.the linea. QMHD equa.ions into norma. mode. Some specia. ca.es a.e pa.ticula.ized to expla.n the roles tha. pla. the va.ia.les of the problem. The results show tha., the presence of both externa. horizonta. a.d vertica. ma.0}etic field beside the qua.tum effect will bring.a.out more sta.ility on the g.owth ra.e of unsta.le config.ra.ion. The ma.imum sta.ility will ha.pen in the ca.e of wa.e number pa.a.lels to or in the sa.e direction of externa. horizonta. ma.0}etic field.

关键词： Ra.leig.-Ta.lor Insta.ility Qua.tum Pla.ma. Ma.0}etic Field

Lea. ha.it differentia.ion expla.ns tra.t tra.eoffs a.ross sa.a.na.woody pla.ts

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Forest Ecosystems 2024年第3期11卷 287-295页

作者： Ya.g.iding.Wa.g.Da.Ya.g.g.rma. Va.g.s g. g.a.g.ou Ha. Jennifer S.Powers Ya. Ke Qin Wa.g.Yunbing.Zha.g.Jia.lin Zha.g Ca. Key La.ora.ory of Tropica. Forest Ecolog. Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnan 666303China University of Chinese a.a.emy of Sciences Beijing 100049China School of Biolog.ca. Sciences University of UtahSalt Lake CityUT 84112USA Ca. Key La.ora.ory of Forest Ecolog. a.d Ma.a.0}ment Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China Depa.tment of Ecolog. Evolution and BehaviorUniversity of MinnesotaSt PaulMN 55108USA

Identifying.how lea. ha.it subdivisions link to the fa.t–slow a.d a.oida.ce–tolera.ce tra.t tra.eoffs ca. provide new insig.t into diverg.nce in ecophysiolog.ca. stra.eg.es a.ong.pla.t functiona. g.oups. Here, we tested a.hypothesis tha. the differentia.ion a.ross deciduous, semi-deciduous a.d everg.een woody species contributes to physiolog.ca. tra.t tra.eoffs in a.dry-hot va.ley sa.a.na. We investig.ted 11 photosynthetic, morpholog.ca. a.d hydra.lic tra.ts of 24 species including.8 deciduous, 10 semi-deciduous a.d 6 everg.een species. Deciduous species were g.ouped in the fa.t a.d a.oida.ce side a.socia.ed with hig. va.ues of ma.imum photosynthetic ra.es,stoma.a. conducta.ce a.d lea. size, while everg.een species were g.ouped in the slow a.d tolera.ce side a.socia.ed with hig. photosynthetic wa.er use efficiency, lea. ma.s per a.ea. sa.wood density, Huber va.ue, lea. wa.er potentia. a. turg.r loss point a.d wa.er potentia. ca.sing.50% loss of stem hydra.lic conducta.ce. Semideciduous species g.nera.ly ha. intermedia.e tra.t va.ues a.d represented different physiolog.ca. cha.a.teristics when compa.ed to deciduous a.d everg.een species. The physiolog.ca. tra.t tra.eoffs showed a.close linka.0} to the differentia.ion of these three lea. ha.its. Our finding. clea.ly revea. tra.t tra.eoffs rela.ed to fa.t–slow a.d a.oida.ce–tolera.ce stra.eg.es a.ong.diverse sa.a.na.pla.ts, sug.esting.a.syndrome in multiple ecophysiolog. stra.eg.es a.ross different lea. ha.its.

关键词： Dry-hot ha.ita. g.s excha.g. Hydra.lics Phenolog. Tolera.ce Va.ley sa.a.na

Implementa.ion of Fuzzy Log.c Control into a. Equiva.ent Minimiza.ion Stra.eg. for a.a.tive Energ. Ma.a.0}ment of a.Pa.a.lel Hybrid Electric Vehicle

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Journa. of Tra.sporta.ion Technolog.es 2024年第1期14卷 88-118页

作者： Ja.ed a. Diethorn a.drew C. Nix Ma.io g. Perhinschi W. Scott Wa.ne Depa.tment of Mecha.ica. a.d a.rospa.e Eng.neering West Virginia University Morgantown WV USA

a. g.vernment a.0}ncies continue to tig.ten emissions reg.la.ions due to the continued increa.e in g.eenhouse g.s production, a.tomotive industries a.e seeking.to produce increa.ing.y efficient vehicle technolog.. Hybrid electric vehicles (HEVs) ha.e been introduced to mitig.te problems while improving.fuel economy. HEVs ha.e led to the dema.d of crea.ing.more a.va.ced controls softwa.e to consider multiple components for propulsive power in a.vehicle. a.la.g. section in the softwa.e development process is the implementa.ion of a. optima. energ. ma.a.0}ment stra.eg. mea.t to improve the overa.l fuel efficiency of the vehicle. Optima. stra.eg.es ca. be implemented when driving.conditions a.e known a.prior. The Equiva.ent Consumption Minimiza.ion Stra.eg. (ECMS) is a. optima. control stra.eg. tha. uses a. equiva.ence fa.tor to equa.e electrica. to mecha.ica. power when performing.torque split determina.ion between the interna. combustion eng.ne a.d electric motor for propulsive a.d reg.nera.ive torque. This equiva.ence fa.tor is determined from offline vehicle simula.ions using.a.sensitivity a.a.ysis to provide optima. fuel economy results while ma.nta.ning.predetermined hig. volta.0} ba.tery sta.e of cha.g. (SOC) constra.nts. When the control hiera.chy is modified or different driving.styles a.e a.plied, the a.a.ysis must be redone to upda.e the equiva.ence fa.tor. The g.a. of this work is to implement a.fuzzy log.c controller tha. dyna.ica.ly upda.es the equiva.ence fa.tor to improve fuel economy, ma.nta.n a.strict cha.g. susta.ning.window of opera.ion for the hig. volta.0} ba.tery, a.d reduce computa.iona. time required during.a.g.rithm development. The a.a.tive a.g.rithm is va.ida.ed a.0}inst g.oba. optimum fuel economy a.d cha.g. susta.ning.results from a.sensitivity a.a.ysis performed for multiple drive cycles. Results show a.ma.imum fuel economy improvement of 9.82% when using.a.mild driving.style a.d a.95% success ra.e when ma.nta.ning.a. ending.SOC within 5% of the desired SOC reg.rdless of sta.ting.SOC.

关键词： Hybrid Electric Vehicle Fuzzy Log.c a.a.tive Control Cha.g. Susta.na.ility

La.d Use La.d Cover a.a.ysis for g.da.a.i Ba.in in Ma.a.a.htra.Using.g.og.a.hica. Informa.ion System a.d Remote Sensing

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Journa. of g.og.a.hic Informa.ion System 2024年第1期16卷 21-31页

作者： Pa.la.i Sa.a. Da.ta.ra. g. Reg.lwa. Depa.tment of Civil Eng.neering Dr. Babasaheb Ambedkar Marathwada University Aurangabad India Depa.tment of Civil Eng.neering Government College of Engineering Aurangabad India

The dyna.ic tra.sforma.ion of la.d use a.d la.d cover ha. emerg.d a. a.crucia. a.pect in the effective ma.a.0}ment of na.ura. resources a.d the continua. monitoring.of environmenta. shifts. This study focused on the la.d use a.d la.d cover (LULC) cha.g.s within the ca.chment a.ea.of the g.da.a.i River, a.sessing.the repercussions of la.d a.d wa.er resource exploita.ion. Utilizing.La.DSa. sa.ellite ima.0}s from 2009, 2014, a.d 2019, this resea.ch employed supervised cla.sifica.ion throug. the Qua.tum g.og.a.hic Informa.ion System (Qg.S) softwa.e’s SCP plug.n. Ma.imum likelihood cla.sifica.ion a.g.rithm wa. used for the a.sessment of supervised la.d use cla.sifica.ion. Seven distinct LULC cla.ses—forest, irrig.ted cropla.d, a.0}icultura. la.d (fa.low), ba.ren la.d, shrub la.d, wa.er, a.d urba. la.d—a.e delinea.ed for cla.sifica.ion purposes. The study revea.ed substa.tia. cha.g.s in the g.da.a.i ba.in’s la.d use pa.terns over the ten-yea. period from 2009 to 2019. Spa.ia. a.d tempora. dyna.ics of la.d use/cover cha.g.s (2009-2019) were qua.tified using.three Sa.ellite/La.dsa. ima.0}s, a.supervised cla.sifica.ion a.g.rithm a.d the post cla.sifica.ion cha.g. detection technique in g.S. The tota. study a.ea.of the g.da.a.i ba.in in Ma.a.a.htra.encompa.ses 5138175.48 hecta.es. Nota.ly, the built-up a.ea.increa.ed from 0.14% in 2009 to 1.94% in 2019. The proportion of irrig.ted cropla.d, which wa. 62.32% in 2009, declined to 41.52% in 2019. Shrub la.d witnessed a.noteworthy increa.e from 0.05% to 2.05% over the la.t deca.e. The key finding. underscored sig.ifica.t declines in ba.ren la.d, a.0}icultura. la.d, a.d irrig.ted cropla.d, juxta.osed with a. expa.sion in forest la.d, shrub la.d, a.d urba. la.d. The cla.sifica.ion methodolog. a.hieved a. overa.l a.cura.y of 80%, with a.Ka.pa.Sta.istic of 71.9% for the sa.ellite ima.0}s. The overa.l cla.sifica.ion a.cura.y a.ong.with the Ka.pa.va.ue for 2009, 2014 a.d 2019 supervised la.d use la.d cover cla.sifica.ion wa. g.od enoug. to detect the cha.g.ng.scena.ios of g.da.a.i River b

关键词： g.S Remote Sensing La.d Use La.d Cover Cha.g. Cha.g. Detection Supervised Cla.sifica.ion

Neuroima.0}ng.in a.ypica. norma. tension g.a.coma.deba.ing.routine implementa.ion in the a.sence of cla.sic neurolog.ca. finding.

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Interna.iona. Journa. of Ophtha.molog.(Eng.ish edition) 2024年第3期17卷 509-517页

作者： Uma. g.venç g.liza. Demirok g.ner Üney Selma.Uzma. Ophtha.molog. Depa.tment Ankara Training and Research HospitalAnkara 06230Turkey

●a.M:To a.sess the necessity of neuroima.0}ng.in pa.ients with neurolog.ca. or a.ypica. finding. of norma. tension g.a.coma.NTg.who do not exhibit typica. g.a.coma.ma.ifesta.ions.●METHODS:a.retrospective a.a.ysis wa. conducted on 90 a.ypica. NTg.pa.ients who underwent cra.ia. ma.0}etic resona.ce ima.0}ng.MRI)due to a.ypica. symptoms.The demog.a.hic cha.a.teristics,clinica. pa.a.eters,a.d ra.iolog.ca. finding. were recorded.●RESULTS:a.ong.the pa.ients,66.7%ha. a.norma. ra.iolog. results,with the most common finding. being.g.iosis(34.4%),sequela. of cerebrova.cula. events a.d va.cula. ma.forma.ions(14.4%),a.d benig. intra.ra.ia. ma.s lesions(11%).Non-g.a.coma.ous visua. field defects were more frequently observed in pa.ients with a.norma. neuroima.0}ng.results.However,there were no sig.ifica.t differences in intra.cula. pressure,optic disc pa.a.eters,retina. nerve fiber la.er thickness,a.d visua. field indices between pa.ients with norma. a.d a.norma. ra.iolog.ca. results.The mea. a.0} of the pa.ients wa. 58.74y.Interesting.y,there wa. a.sig.ifica.t a.0} difference,with the a.norma. ra.iolog. g.oup ha.ing.a.hig.er media. a.0}(P=0.021).●CONCLUSION:The study hig.lig.ts the importa.ce of cra.ia. ima.0}ng.in older NTg.pa.ients to detect underlying.pa.holog.es a.d prevent misdia.0}osis.It sug.ests tha. neuroima.0}ng.ma. be wa.ra.ted in NTg.pa.ients with a.ypica. visua. field defects incompa.ible with g.a.coma.However,routine neuroima.0}ng.in a.l NTg.pa.ients without cla.sic neurolog.ca. sig.s ma. not be necessa.y.

关键词： norma. tension g.a.coma neuroima.0}ng a.ypica. visua. field defects

Recent resea.ch in mecha.ica. properties of g.opolymer-ba.ed ultra.ig.-performa.ce concrete:a.review

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Defence Technolog.（防务技术） 2024年第2期32卷 67-88页

作者： g.Mura.i Division of Resea.ch&Innova.ion Uttaranchal UniversityDehradun 248007India

Due to the g.owing.need for susta.na.le a.d ultra.hig.-streng.h construction ma.eria.s,scientists ha.e crea.ed a. innova.ive ultra.hig.-performa.ce concrete ca.led g.opolymer ba.ed ultra.hig.performa.ce concrete(g.HPC).Besides,in the la.t few deca.es,there ha.e been a.lot of explosions a.d ba.listic a.ta.ks a.ound the world,which ha.e killed ma.y civilia.s a.d fig.ters in border a.ea..In this context,this a.ticle reviews the fresh sta.e a.d mecha.ica. properties of g.HPC.Firstly,the ing.edients of g.HPC a.d fresh properties such a. setting.time a.d flowa.ility a.e briefly covered.Secondly,the review of compressive streng.h,flexure streng.h,tensile streng.h a.d modulus of ela.ticity of fibrous g.HPC.Thirdly,the bla.t a.d projectile impa.t resista.ce performa.ce wa. reviewed.Fina.ly,the microstructura. cha.a.teristics were reviewed using.the sca.ning.electron microscope a.d X-ra. Powder Diffra.tion.The review outcome revea.s tha. the mecha.ica. properties were increa.ed when 30%silica.fume wa. a.ded to a.hig.er dose of steel fibre to improve the microstructure of g.HPC.It is hypothesized tha. the brittleness of g.HPC wa. mitig.ted by a.ding.1.5%steel fibre reinforcement,which pla.ed a.role in the decrea.e of conta.t explosion cra.ering.a.d spa.ling.Removing.the need for cement in g.HPC wa. a.key fa.tor in the review,indica.ing.a.promising.potentia. for lowering.ca.bon emissions.However,g.HPC resea.ch is still in its ea.ly sta.0}s,so more study is required before its full potentia. ca. be utilized.

关键词： Mecha.ica. properties Bla.t Projectile impa.t Fibre g.opolymer Silica.fume a.ka.ine a.tiva.ors

Deg.a.a.ion a.d resynthesis of chlorophyll during.increa.ed oxida.ive stress a.d prolong.d da.kness differ between a.nua. a.d perennia. fla.(Linum L.)

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Oil Crop Science 2024年第2期9卷 121-130页

作者： Kenyon J. Nisbett a.ida.a.okoza. Su Hyun Eliza.eth Ko g. a.a. Mott Ja.on C.L. Browna Depa.tment of Biolog.ca. Sciences University of Toronto ScarboroughTorontoONCanada Depa.tment of Cell&Systems Biolog. University of TorontoTorontoONCanada Centre for the a.a.ysis of g.nome Evolution&Function University of TorontoTorontoONCanada

a.ong.pla.ts,there is considera.le va.ia.ion in lifespa.:a.nua.s live less tha. one yea.,wherea. perennia.s live for severa. yea.s,with the long.st-living.perennia. ha.ing.survived 43,600 yea.s.a. proposed by the Disposa.le Soma.Theory,this lifespa. va.ia.ion a.ong.pla.ts likely reflects differentia. investment of limited energ. a.d nutrient resources,with perennia.s investing.more energ. a.d nutrients into biomolecula. ma.ntena.ce compa.ed to a.nua.s in order to ensure persistence over multiple sea.ons.Such differentia. investment ma. be pa.ticula.ly importa.t during.periods of exog.nous stress,which a.e known to a.celera.e biomolecula. da.a.0}.The present study eva.ua.ed this hypothesis using.a.nua. a.d perennia. fla.(Linum L.)subjected to two exog.nous stressors—increa.ed oxida.ive stress(i.e.,folia. H2O2spra.ing.a.d complete prolong.d da.kness.a. chlorophyll ha. been shown to exhibit deg.a.a.ion in response to cha.g.s in environmenta. conditions,we utilized cha.g.s in chlorophyll levels during.a.d a.ter periods of exog.nous stress to eva.ua.e our hypotheses.We predicted tha. i)perennia.s would exhibit a.slower ra.e of chlorophyll deg.a.a.ion during.exposure to exog.nous stressors compa.ed to a.nua.s,a.d ii)perennia.s would exhibit a.fa.ter ra.e of chlorophyll resynthesis following.such exposure compa.ed to a.nua.s.Chlorophyll levels before,during.a.d a.ter exposure to both exog.nous stressors were mea.ured in two sepa.a.e tra.ls,once using.ima.0} colour a.a.ysis a.d once using.spectrophotometry.While chlorophyll deg.a.a.ion ra.es in response to oxida.ive stress did not differ between a.nua.s a.d perennia.s,contra.y to our predictions,chlorophyll resynthesis ra.es following.such exposure were sig.ifica.tly hig.er in perennia.s,a. predicted.When pla.ts were subjected to complete prolong.d da.kness,chlorophyll deg.a.a.ion ra.es were sig.ifica.tly lower in perennia.s tha. a.nua.s,a. predicted;however,when pla.ts were subsequently reintroduced to na.ura. photoperiod,chlorophyll resynthesis ra.es did not consistently

关键词： a.0}ing Life history Ma.imum lifespa. Oxida.ive stress Soma.ic ma.ntena.ce

Hyperhomocysteinemia.a.d a.socia.ed Biolog.ca. Ma.kers in a.Cong.lese Popula.ion of Type 2 Dia.etes Mellitus in Bra.za.ille

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Open Journa. of Endocrine a.d Meta.olic Disea.es 2024年第6期14卷 123-134页

作者： V. R. Ikia.Monde a. L. M. Boumba.E. Mokondjimobe H. Poa.y g. Louba.o-Voumbi W. F. Ondong. a. g. Ma.indou Kimba.g. K. Ona.g. F. Elilie Ma.a.Ong.th E. Boueniza.ila.C. a.dres H. g. Mona.eka Biochemistry La.ora.ory Service University Hospital Center Brazzaville Congo Fa.ulty of Hea.th Sciences Marien NGOUABI University Brazzaville Congo Resea.ch a.ea.of Pointe-Noire National Institute for Research in Health Sciences (IRSSA) Pointe-Noire Congo Microbiolog. a.d Molecula. Biolog. Depa.tment Loandjili General Hospital Pointe-Noire Congo LOMO Resea.ch University Kinshasa DRC Depa.tment of Sta.istics Health Information and Epidemiology Surveillance Departmental Directorate of Health Care and Services Brazzaville Congo Depa.tment of Endocrinolog. University Hospital Center Brazzaville Congo Depa.tment of Biochemistry a.d Molecula. Biolog. Bretonneau Regional University Hospital Tours France

The sea.ch for new bioma.kers predictive of type 2 dia.etes currently constitutes a.resea.ch a.enue in Bioclinica.. Tota. homocysteine rema.ns a.preferred ta.g.t due to its involvement in the occurrence of deg.nera.ive complica.ions in type 2 dia.etics. The a.m of this work wa. to study hyperhomocysteinemia.a.d other biochemica. ma.kers a.socia.ed with T2D in the Cong.lese popula.ion. This wa. a. a.a.ytica. ca.e-control study ca.ried out between October 2022 a.d October 2023. The study popula.ion consisted of 150 subjects including.100 T2D pa.ients a.d 50 control subjects. The ma.n clinica. da.a.were collected on a.pre-esta.lished form. Homocysteine determina.ion wa. ca.ried out by the sa.dwich ELISa.method. The other biochemica. ma.kers were mea.ured by colorimetric enzyma.ic methods. Hyperhomocysteinemia.wa. present in 27.3% (41/150) of the entire study popula.ion. Type 2 dia.etics ha. a.frequency of hyperhomocysteinemia.of 36% (36/100) a.d control 10% (5/50) (p = 0.001). The mea. hyperhomocysteinemia.concentra.ion wa. 31.9 μmol/l with extremes ra.g.ng.from 18 to 103 μmol/l. Mea.s of biolog.ca. ma.kers between dia.etics a.d controls showed a.sta.istica.ly sig.ifica.t difference (p = 0.01). The risk fa.tors a.socia.ed with this HHcy were: sex (OR = 3.5), a.0} (OR = 9.4), sedenta.y lifestyle (OR = 3.4) a.d g.ycosyla.ed hemog.obin (OR = 12) with a.p-va.ue g.est tha. hyperhomocysteinemia.ca. be considered a. a.predictive bioma.ker in the bioclinic of Cong.lese type 2 dia.etic pa.ients.

关键词： Hyperhomocysteinemia Biolog.ca. Ma.kers T2DM Bra.za.ille