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Chine.e.Journal of Polyme. Scie.ce 2013年第2期31卷 242-250页

作者： H.H. Abde.-Razik b.H. Asghar e. Ke.awy Che.istry De.artme.t Faculty of Science Mansoura University Che.istry De.artme.t Faculty of Science Taif University Che.istry De.artme.t Faculty of Applied Sciences Umm Al-Qura University Che.istry De.artme.t Polymer Research Group Faculty of Science Tanta University

Chloranil through conde.sation re.ction with vicinal diamine.such as diaminomale.nitrile.produce. he.e.ocyclic monome., p-be.zoquinone.is[2,3-b; 2＇,3＇-b＇]pyrazine.5,6-dinitrile. The.te.ranitrile.monome. was cyclo-te.rame.ise. using lithium/pe.tanol and ace.ic acid affording the.corre.ponding te.rap-be.zoquinone.bis[2,3-b; 2＇,3＇-b＇]pyrazinoporphyrazine.]- base. ne.work polyme. （2H-Pz）. The.te.ranitril monome. was cyclo-te.rame.ise. using me.al salt and quinoline.affording the.corre.ponding porphyrazinato-me.al II-base. ne.work polyme.s （m-Pz）, m = Co, Ni or Cu. e.e.e.tal analytical re.ults, IR and NmR spe.tral data of the.pre.are. mole.ule. are.consiste.t with the.r assigne. formulations. mole.ular masse. and me.al conte.ts of the.synthe.ize. polyme.s prove. to be.of high mole.ular masse. which confirm the.e.ficie.cy of te.rame.ization polyme.ization and comple.ation re.ctions. The.pre.are. pyrazinoporphyrazine. we.e.use. as e.ficie.t catalysts for the.oxidation of thiophe.ol and be.zylthiol to the.r disulfide. in the.pre.e.ce.of air atmosphe.e. The.re.ults of oxidation of thiophe.ol and be.zylthiol show that afte. 15 min the.maximum yie.d of the.corre.ponding disulfide. re.che. 95%, 91%, re.pe.tive.y.

关键词： Pyrazinoporphyrazine Polyme.-supporte. me.al (II)-base. catalysts Chloranil.

A fully-e.plicit discontinuous Gale.kin hydrodynamic mode. for variably-saturate. porous me.ia

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Journal of Hydrodynamics 2014年第4期26卷 594-607页

作者： De.mAe. T. HANe.T e. VANCLOOSTe. m. e.rth and Life.Institute Environmental SciencesUniversité catholique de LouvainB-1348 Louvain-la-NeuveBelgium Ge.rge. Le.a?tre.Ce.tre.for e.rth and Climate.Re.e.rch Université catholique de LouvainB-1348 Louvain-la-NeuveBelgium

Groundwate. flows play a ke. role.in the.re.harge.of aquife.s, the.transport of solute. through subsurface.syste.s or the.control of surface.runoff. Pre.icting the.e.proce.se. re.uire. the.use.of groundwate. mode.s with the.r applicability dire.tly linke. to the.r accuracy and computational e.ficie.cy. In this pape., we.pre.e.t a ne. me.hod to mode. wate. dynamics in variably- saturate. porous me.ia. Our mode. is base. on a fully-e.plicit discontinuous-Gale.kin formulation of the.3D Richards e.uation, which shows a pe.fe.t scaling on paralle. archite.ture.. We.make.use.of an adapte. jump pe.alty te.m for the.discontinuous-Gale.kin sche.e.and of a slope.limite. algorithm to produce.oscillation-fre. e.actly conse.vative.solutions. We.show that such an approach is particularly we.l suite. to infiltration fronts. The.mode. re.ults are.in good agre.me.t with the.re.e.e.ce.mode. Hydrus-lD and se.m promising for large.scale.applications involving a coarse.re.re.e.tation of saturate. soil.

关键词： 3D subsurface.flow mode. discontinuous Gale.kin me.hod slope.limite.s e.plicit time.inte.ration

Role.of vitamin b12 de.icie.cy in ische.ic stroke.risk and outcome

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Ne.ral Re.e.e.ation Re.e.rch 2021年第3期16卷 470-474页

作者： Gyllian b.Yahn Jamie.e.Abato Nafisa m.Jadavji De.artme.t of biome.ical Scie.ce. Midwestern UniversityGlendaleAZUSA De.artme.t of Ne.roscie.ce Carleton UniversityOttawaONCanada

Curre.tly,ische.ic stroke.is the.most pre.ale.t form of stroke.compare. to he.orrhagic and the.e.is a high incide.ce.in olde. *** is a modifiable.risk factor for stroke.b-vitamins are.part of a me.abolic ne.work that inte.rate. nutritional signals with biosynthe.is,re.ox home.stasis,and *** vitamins play an e.se.tial role.in the.re.ulation of ce.l prolife.ation,stre.s re.istance.and e.bryo de.e.opme.t.A de.icie.cy in vitamin b12 is common in olde. adults and has be.n re.orte. to be.implicate. in ische.ic *** aim of this re.ie. was to inve.tigate.whe.he. vitamin b12 de.icie.cie. impact the.risk and outcome.of ische.ic *** data from our lite.ature.re.ie. strongly sugge.t that a de.icie.cy in vitamin b12 is a risk factor for ische.ic stroke.and possible.*** surve. of the.lite.ature.has ide.tifie. that the.e.is a gap in the.unde.standing of the.me.hanisms through which a vitamin b12 de.icie.cy le.ds to an incre.se. risk of stroke.and outcome.A vitamin b12 de.icie.cy can incre.se.homocyste.ne.le.e.s,which are.a we.l-e.tablishe. risk factor for ische.ic *** pote.tial me.hanism through which vitamin b12 de.icie.t may impact ne.rological function and incre.se.risk of stroke.is change. in mye.ination,howe.e. this link re.uire. furthe. *** studie. are.re.uire. in mode. syste.s to unde.stand how a vitamin b12 de.icie.cy change. the.brain.

关键词： b-vitamins ische.ic stroke one.carbon vitamin b12

e.fe.t of ne.r-fault e.rthquake. with forward dire.tivity on te.e.ommunication towe.s

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e.rthquake.e.gine.ring and e.gine.ring Vibration 2011年第2期10卷 211-218页

作者： m.Yahyai b.Re.ayibana e.mohammadre.apour De.artme.t of Civil e.gine.ring K.N. Toosi University of Technology Islamic Azad Unive.sity

In this pape., the.e.fe.t of pulse.type.motions cause. by forward dire.tivity that can re.e.se.huge.amounts of e.e.gy in a short time.pe.iod is studie. on a te.e.ommunication towe.. Since.te.e.ommunication towe.s have.longe. pe.iods, the. are.not as affe.te. by se.smic force.. Ne.e.the.e.s, ne.r source.e.rthquake. characte.ize. by high ve.ocity and ve.ocity pulse. can change.the.be.avior of the.e.structure.. For this re.son, a te.e.ommunication towe. locate. ne.r active.faults was se.e.te. in this study. Conside.ing the.probable.e.rthquake.magnitude.at the.site.and the.distance.of the.towe. from adjace.t faults, nine.simulate. pulse. and thre. ne.r-fault e.rthquake.re.ords with forward dire.tivity are.se.e.te. and applie. to a 3D finite.e.e.e.t mode. of the.towe.. The.re.ults of nonline.r dynamic analysis, i.e., displace.e.ts and damage.in the.towe., indicate.that the.maximum displace.e.t and drift ratio of the.towe. unde. the.pulse. are.obviously affe.te. by the.ratio of the.structure.pe.iod to pulse.pe.iod. Whe. this ratio is de.re.se. and close.to 1.0, the.maximum displace.e.t and drift ratio are.sharply incre.se. and cause.large.displace.e.ts in the.towe..

关键词： ne.r-fault e.rthquake ve.ocity pulse nonline.r dynamic analysis drift ratio

Synthe.is of Nove. 3-Substitute. Pyridothie.opyrimidine.e.ivative. with biological e.aluation as Antimicrobial Age.ts

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Che.ical Re.e.rch in Chine.e.Unive.sitie. 2016年第6期32卷 967-972页

作者： Farag A. e.-e.sawy Nade. m. boshta ayman K. e.-Sawaf Are.l A. Nassar mohame. S. Khalafalah Pre.aratory Ye.r De.nship Basic Science Department Prince Sattam Bin Abdulaziz University KSA Che.istry De.artme.t Faculty of Science Menoufia University Shebin EI-Koam Egypt Collage.of Scie.ce.and Humanitle. Prince Sattam Bin Abdulaziz University KSA Faculty of e.ucation for Girls Prince Sattam Bin Abdulaziz University KSA

Nove. 3-substitute. pyridothie.opyrimidine.de.ivative. have.be.n synthe.ize. via the.re.ction of 2-{7,9-dime.hyl-4-oxopyrido[3′,2′：4,5]thie.o[3,2-d]pyrimidin-3（4H）-yl}ace.ohydrazide.5） with a varie.y of active.e.ge.ts and che.icals. Structure. of the.ne.ly synthe.ize. compounds we.e.e.tablishe. base. on spe.tral *** re.ulting pyridothie.opyrimidine.de.ivative. we.e.e.aluate. for the.r possible.antimicrobial activity and some.ofthe. re.re.e.t a ne. class of pote.tially antimicrobial compounds, e.pe.ially compounds 9 and 18 which displaye.the.highe.t activity against Gram-positive.bacte.ia, Gram-ne.ative.bacte.ia, and Fungi in mIC range.of 0.12--1.95 μg/mL.

关键词： Nitroge.-containing he.e.ocycle Pyridothie.opyrimidine Thie.o[2,3-b]pyridine Antimicrobial

Institutional arrange.e.t and typology of community fore.ts of me.halaya, mizoram and Nagaland of North-e.st India

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Journal of Fore.try Re.e.rch 2013年第1期24卷 179-186页

作者： b. K. Tiwari H. Tynsong m. m. Lynrah e. Lapasam S. De. D. Sharma De.artme.t of e.vironme.tal Studie. North-Eastern Hill University Re.ional Ce.tre National Afforestation and Eco-Development BoardNorth-Eastern Hill University

most community fore.ts in hill re.ions of northe.st India have.be.n manage. by traditional local institutions for ce.turie. and most of the.e.institutions re.ain functional e.e. today. Highe. fore.t cove.age.on private.and community lands as compare. to gove.nme.t land indicate. that traditional institutions e.fe.tive.y manage.community fore.ts in the.re.ion. The.pre.e.t study was conducte. through a surve. of lite.ature.and fie.d work using participatory re.e.rch tools viz., PRA e.e.cise., group discussions and que.tionnaire.inte.vie.s with ke. informants in northe.st India. We.cate.orize. the.institutions involve. in conse.vation and manage.e.t of fore.ts into thre. major type.： traditional, quasi-traditional and mode.n. Traditional institutions with hie.archal structure.we.e.found in all state. and are.intact and functional in the.state.of me.halaya. Quasi-traditional institutions, a ble.d of traditional and mode.n institutions we.e.pre.ale.t in Nagaland while.mode.n institutions have.almost re.lace. traditional institutions in mizoram. We.re.orde. at le.st e.e.e. type. of community fore.ts viz., group of village.fore.t, village.fore.t, re.tricte. fore.t, sacre. fore.t, clan fore.t, ce.e.e.y fore.t, re.e.e.ation fore.t, bamboo fore.t, re.re.tion fore.t, village.re.e.ve. fore.t and me.icinal plantation in village. of thre. state.. The.tribal pe.ple. through long-te.m trial and e.ror e.pe.ime.ts, have.de.e.ope. an e.aborate. functional and ge.e.ally de.ocratic syste. of conse.vation and manage.e.t of fore.ts and associate. natural e.osyste.s. Se.e.al fore.t and natural re.ource.manage.e.t le.sons can be.le.rnt from the.institutional structure.and de.ision making syste. of the.e.olving and dynamic institutions of tribal communitie. of the.re.ion.

关键词： sustainable natural re.ource. community, institution: tribal

Oxidative.le.ching kine.ics of molybde.um-uranium ore.in H2SO4 using H2O2 as an oxidizing age.t

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Frontie.s of Che.ical Scie.ce.and e.gine.ring 2013年第1期7卷 95-102页

作者： T. A. Lashe.n m. e. e.-Ahmady H. b. Hassib A. S. He.al Nucle.r mate.ials Authority Cairo Egypt Che.istry De.artme.t Faculty of Science Cairo University Giza Egypt

The.proce.sing of molybde.um-uranium ore.in a sulfuric acid solution using hydroge. pe.oxide.as an oxidant has be.n inve.tigate.. The.le.ching te.pe.ature. hydroge. pe.oxide.conce.tration, sulfuric acid conce.tration, le.ching time. particle.size. liquid-to-solid ratio and agitation spe.d all have.significant e.fe.ts on the.proce.s. The.optimum proce.s ope.ating parame.e.s we.e. te.pe.ature. 95℃; H2O2 conce.tration： 0.5 m; sulfuric acid conce.tration： 2.5 m; time. 2 h; particle.size. 74 gm, liquid-to-solid ratio： 14 ： 1 and agitation spe.d： 600 rpm. Unde. the.e.e.pe.ime.tal conditions, the.e.traction e.ficie.cy of molybde.um was about 98.4%, and the.uranium e.traction e.ficie.cy was about 98.7%. The.le.ching kine.ics of molybde.um showe. that the.re.ction rate.of the.le.ching proce.s is controlle. by the.che.ical re.ction at the.particle.surface. The.le.ching proce.s follows the.kine.ic mode. 1 - （1-X）1/3 = kt with an appare.t activation e.e.gy of 40.40 kJ/mole. The.te.pe.ature. conce.trations of H202 and H2SO4 and the.me.h size.are.the.main factors that influe.ce.the.le.ching rate. The.re.ction orde. in H2SO4 was 1.0012 and in H202 it was 1.2544.

关键词： le.ching of molybde.um le.ching of uranium kine.ics

e.fe.ts of nano-voids and nano-cracks on the.e.astic prope.tie. of a host me.ium: xfe. mode.ing with le.e.-se. function and fre. surface.e.e.gy

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Acta me.hanica Sinica 2019年第4期35卷 799-811页

作者： b.e. Hachi D. Hachi m. Haboussi Laboratoire.de.Déve.oppe.e.t e. mécanique.e. matériaux (LDmm) Université de Djelfa PB 3117 Djelfa Algérie Laboratoire.d’Automatique.Appliquée.e. Diagnostics Industrie.s (LAADI) Université de Djelfa PB 3117 Djelfa Algérie Laboratoire.de. Scie.ce. de. Procédés e. de. matériaux (LSPm) Université Paris 13 UPR 3407 CNRS Paris France

This work de.ls with the.influe.ce. of nano-he.e.oge.e.tie. in the.form of voids/cavitie. or cracks on the.e.astic (ple.se.confirm which word is corre.t. e.fe.tive.or e.astic? According to the.title.of pape., I choose.e.astic.) prope.tie. of a host me.ium. With a re.ative.y large.ratio of appare.t-surface.to volume.and particularly strong physical inte.actions with the.surrounding me.ium at nano-scale. nano-he.e.oge.e.tie. can pote.tially affe.t the.e.astic(e.fe.tive.or e.astic?) prope.tie. of the.pare.t me.ium (matrix) containing the. in a significant manne.. This has be.n re.orte. by various the.re.ical and e.pe.ime.tal studie., some.of the. are.discusse. in the.pre.e.t pape.. To de.cribe.the.positive.(re.nforce.e.t) or ne.ative.(de.radation) e.fe.t of the.nano-he.e.oge.e.tie. from the.mode.ing pe.spe.tive. it is ne.e.sary to take.into account the.e.e.gy of inte.face./surface. be.we.n nano-he.e.oge.e.tie. and the.matrix which, by the.fact of the.re.ative.y large.e.te.t of the.r appare.t surface.and the.r strong physical inte.action with the.r ne.ghborhood, can no longe. be.ne.le.te. compare. to those.of the.volume.e.e.gy. Thus, to account for the.e.fe.ts of inte.face./surface. in a nanostructure. he.e.oge.e.us me.ium, the.cohe.e.t inte.face.mode. is conside.e. in the.pre.e.t inve.tigation within a pe.iodic homoge.ization proce.ure. In this inte.face.surface.mode., the.displace.e.t ve.tor is assume. to be.continuous across the.inte.face.while.the.stre.s ve.tor is conside.e. to be.discontinuous and satisfying the.Laplace.Young e.uations. To solve.the.e.e.uations couple. to the.classical me.hanical e.uilibrium proble., a nume.ical simulation tool is de.e.ope. in a two-dime.sional (2D) conte.t using the.e.te.de. Finite.e.e.e.t me.hod (XFe.) and the.Le.e.-Se. functions. The.de.e.ope. nume.ical tool is the. use. to carry out a de.aile. analysis about the.e.fe.t of nano-he.e.oge.e.tie. on the.ove.all me.hanical prope.tie. of a me.ium. The.nano-he.e.oge.e.tie. are.pre.e.t

关键词： Inte.face.Surface e.e.gy XFe. Le.e.-Se. function Pe.iodic homoge.ization Nano-voids/Nano-cavitie. Nano-cracks Nano-inclusions/Nano-he.e.oge.e.tie.

Pre.ation risk asse.sme.t base. on unce.tain information: inte.acting e.fe.ts of known and unknown cue.

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Curre.t Zoology 2019年第1期65卷 75-76页

作者： Laure.ce.e. A. Fe.te. e.ony e. m. De.e.s Indar W. Ramnarine.Grant e. brown De.artme.t of biology Concordia University 7141 Sherbrooke Streeet West Montreal Quebec Canada H4B 1R6 De.artme.t of Life.Scie.ce. University of the West Indies St. Augustine Trinidad and Tobago

Pre. use.re.iable.public information in orde. to asse.s local habitat condirions such as pre.ation risks, compe.itive.inte.actions, and foraging opportunitie. (Dall e. al. 2005), allowing for conte.t appropriate.be.avioral de.isions. Howe.e., public information can ofte. diffe. wide.y in re.iability (Fe.te. and brown 2018), incre.sing the.pote.tial costs associate. with be.avioral de.ision making (Dall e. al. 2005). The.re.iability of public information is e.pe.te. to de.re.se.with in cre.se. un ce.tainty of e.vironme.tal conditio ns (Koops 2004;Dall e. al. 2005), whe.e.e.ological unce.tainty is the.ambiguity about the.curre.t state.of the.e.vironme.t due.to impe.fe.t or incomple.e.information (Dall e. al. 2005;munoz and blumste.n 2012;Fe.te. and brown 2018).

关键词： Pre. e.vironme.tal conditio

multiplicity characte.istics in re.ativistic ^(24)mg-nucle.s collisions

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Chine.e.Physics C 2013年第8期37卷 12-20页

作者： A. Abde.salam e. A. Shaat Z. Abou-moussa b. m. badawy Z. S. mate. Physics De.artme.t Faculty of Science Cairo University Re.ctor Physics De.artme.t Nuclear Research Center Atomic Energy Authority Egypt

This work is conce.ne. with the.analyse. of the.showe. and gray particle.production in 4.5 A Ge./c 24mg collision with e.ulsion nucle.. The.highe.t particle.production occurs in the.re.ion of the.low impact parame.e.s. While.the.multiplicity of the.showe. particle. e.itte. in the.forward dire.tion de.e.ds on the.proje.tile.mass numbe. and e.e.gy, the.multiplicity of the.backward one. shows a limiting be.aviour. The.source.of the.e.ission of the.forward showe. particle. is comple.e.y diffe.e.t from that of the.backward one.. The.targe. fragme.ts are.produce. in a the.malize. syste. of e.ission.

关键词： 24mg inte.actions with e.ulsion forward and backward e.ission of hadrons proje.tile.and targe. de.e.de.ce