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Evolution of ger.ination str.tegy in the invasive species Ulex eur.paeus

Jour.al of Plant Ecology 2017年第2期10卷 375-385页

作者： Nathalie Udo michèle Tar.yr. Anne Atlan Labor.toir. ECOBIO UMR 6553CNRSUniversitéde Rennes 1Bâtiment 14ACampus de Beaulieu263 avenue du Général Leclerc35042 Rennes CedexFrance

Aims The study of the adaptive potential of the ger.ination patter.s of invading species enables us to identify some tr.its linked with their.capacity to colonize new sites,and to gain a better.under.tanding of their.ar.a of *** aim of this study is to deter.ine the ger.ination patter. of Ulex eur.paeus,a cosmopolitan invasive species,in r.0}ation to temper.tur. and to explor. its potential evolu-tion and invasiveness in a tr.pical r.gion,following its intr.duction fr.m *** We studied the ger.ination patter. of ***(the com-mon gor.e)to test both physical dor.ancy and ger.ination capacity within the r.nge of temper.tur.s found in the native and invasive *** under.tand its ger.ination patter. and its evolution,the r.te and the speed of ger.ination,as well as the per.entage of seeds that became mouldy dur.ng the exper.-ment,have been compar.d between a native habitat,Fr.nce and a habitat into which it has been intr.duced,the tr.pical island of La *** Findings The r.sults show that gor.e seeds ger.inate in lar.e quantities,pos-sess the ability to ger.inate under.a wide r.nge of temper.tur.s and they confir. the physical dor.ancy of the seeds(caused by seed coat imper.eability).The decr.ase in ger.ination fr.m 25℃ upwar.s,coupled with an incr.ase in the r.te of moulding help to explain its r.str.cted distr.bution at altitude in tr.pical *** scar.-fied seeds,we have not detected any differ.nce between the two r.gions,neither.in the per.entage of ger.inated seeds,nor.in the per.centage of mouldy ***,seeds fr.m r.union ger.inate faster.at 20℃ than seeds fr.m Fr.nce and a gr.ater.number.of seeds fr.m r.union ar. able to ger.inate without scar.fication(10-60%for.r.union ver.us 0-10%for.Fr.nce).These r.sults suggest that while pr.ser.ing the advantages of the native habitat,in r.union gor.e develops a str.tegy which favour. the r.pid occupation of new sites.

关键词： Ulex eur.paeus invasive species ger.ination physical dor.ancy

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Bedouin far.s in the Saint Kather.ne mountainous ar.a(South Sinai,Egypt)

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Jour.al of Mountain Science 2019年第10期16卷 2232-2242页

作者： Kamal h.ShALTOUT Khaled h.el-hAMDI Safaa A.el-MASr. Ebr.hem M.EID Botany Depar.ment Faculty of ScienceTanta UniversityTanta31527Egypt Soil Depar.ment Faculty of AgricultureMansoura UniversityMansoura35516Egypt Biology Depar.ment College of ScienceKing Khalid UniversityAbha61321P.O.Box9004Saudi Arabia Botany Depar.ment Faculty of ScienceKafr El-Sheikh UniversityKafr El-Sheikh33516Egypt

This study aims to assess the natur.l and cultivated plant species in 26 Bedouin far.s in Saint Kather.ne Pr.tector.te(SKP),identify their.soil and water.char.cter.stics,and assess the suitability of these far.s for.the cultivation of some wild medicinal *** far.s wer. selected to r.pr.sent wide wadis with deep sand and clay deposits,gor.e-like wadis cover.d with r.ck fr.gments of differ.nt sizes,spot-like oases,and the Al Q’aa *** TWINSPAN(two-way indicator.species analysis)and DCA(detr.nded cor.espondence analysis)techniques,the 26 far.s wer. classified into 5 gr.ups(Ⅰ-Ⅴ)based on their.flor.stic composition of wild *** gr.ups r.flect an elevation gr.dient among the far.s above sea level fr.m a mean of 119 m to a mean of1,865m.A total of 73 wild species wer. r.cor.ed,with47 in gr.upⅡ(500-1,000 m)and 25 in gr.up V(>1,700 m).The common tar.et species wer. Ar.emisia judaica,Acacia tor.ilis ***,Or.ganum syr.acum *** and Var.hemia montana(34.6%-26.9%).The cultivated speciesnumber.d 25,with 17 in gr.upⅡ(500-1,000 m) andⅡin gr.upⅣ(1,500-1,700 m).The common fr.it tr.es wer. olive,gr.pe,fig,apple,palm,almond,apr.cot and pomegr.nate(73.0%-42.3%).Based on the soil char.cter.stics,13 far.s belong to soil class 2that descr.bes good soils with moder.te limitations,and 12 belong to soil class 3 that descr.bes moder.tely good soils,which can be used r.gular.y for.cr.ps after.pr.per.tr.atment.

关键词： Agr.for.str. Saint Kather.ne Pr.tector.te Wild medicinal plants elevation gr.dient Multivar.ate analysis Wadi Feir.n

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Dyspr.sium oxide,alumina,and gr.phene oxide r.infor.ed polycapr.lactone thin films:Ther.al stability,mor.hology,and cell viability

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Jour.al of r.r. Ear.hs 2024年第7期42卷 1337-1343,I0005页

作者： Mohamed Thar.at elabbasy Mohamed r.Atteya Mai A.Samak Mousa Abdelr.hman Tahani AlMahmoud M.A.el-Mor.y A.A.Menazea M.F.h.Abd el-Kader Depar.ment of Public health College of Public Health and Health InformaticsUniversity of Ha'ilHa'il2440Saudi Arabia Food Contr.l Depar.ment Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Depar.ment of Physical Ther.py College of Applied Medical SciencesUniversity of Ha'ilHa'ilSaudi Arabia Depar.ment of histology and Cell Biology Faculty of MedicineZagazig UniversityZagazig44519Egypt College of Nur.ing University of Ha'ilHa'ilSaudi Arabia College of Science and humanities in Al-Khar. Physics DepartmentPlasma Technology and Material Science UnitPrince Sattam Bin Abdulaziz UniversityAl-kharj11942Saudi Arabia Physics Depar.ment Faculty of ScienceUniversity of DamiettaNew Damietta34517Egypt Spectr.scopy Depar.ment Physics Research InstituteNational Research CentreDokki12622GizaEgypt Biophysics Depar.ment Faculty of ScienceCairo UniversityGizaEgypt

Developing a biomater.al for.wound healing applications is still a ***,dyspr.sium oxide(Dy_(2)O_(3)),aluminum oxide(Al_(2)O_(3)),and gr.phene oxide(GO)wer. embedded in cast films based on polycapr.lactone(PCL)to be examined for.wound dr.ssing *** techniques wer. used to char.cter.ze the fabr.cated films including X-r.y diffr.ction(Xr.),Four.er.tr.nsfor. infr.r.d spectr.scopy(FTIr.,r.man,and scanning electr.n micr.scopy(SEM),besides their.biological *** ther.ogr.vimetr.c analysis(TGA)exhibits high ther.al stability as the scaffold weight decr.ases slightly to 98.6%after.r.ising the temper.tur. fr.m r.om temper.tur. to 280℃.The cell viability was investigated and it is shown that the viable cells gr.w up to appr.ximately 93%at 75μg/***,the cell attachment shows excellent behavior.as the cells attach on most of the sur.ace of the modified PCL which shows high biocompatibility.

关键词： Wound healing Polycapr.lactone Dy_(2)O_(3) Al_(2)O_(3) Biocompatible r.r. ear.hs

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Geochemistr. of the ur.nium-thur.um-bear.ng gr.nitic r.cks and pegmatites of Wadi haleifiya ar.a,Southeaster. Sinai,Egypt

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Chinese Jour.al Of Geochemistr. 2012年第3期31卷 242-259页

作者： el Ghar.awy r.I el Maadawy W.M. Faculty of Science Ain Shams UniveristyCairoEgypt Nuclear.Mater.als Author.ty P.O.Box 030MaadiEgypt

Ther. ar. two main gr.nitic r.cks cr.pping out in the study ar.a:1) the syn-or.genic gr.nites ar. moder.tely weather.d,jointed,exfoliated and char.cter.zed by low *** r.cks ar. subdivided into tonalite and *** ar. essentially composed of plagioclase,quar.z,biotite,hor.blende and potash feldspar.and 2) the post-or.genic gr.nites,char.cter.zed by high r.0}ief ter.ain and r.pr.sented by monzogr.nite,syenogr.nite and alkali *** monzogr.nites suffer.d hydr.ther.al alter.tion in par.icular.along joints,faults,shear.zones and fr.ctur.s,which r.cor.ed the highest values of r.dioactivity,r.flecting the r.le of post-magmatic alter.tion pr.cesses in the enhancement of *** hydr.ther.al alter.tion(desilicification and hematitization) r.sulted in the for.ation of miner.lized(alter.d) *** alter.d gr.nites ar. enr.ched in TiO 2,Al 2 O 3,FeO T,MnO,MgO,Na 2 O,r.,Sr.Y,Zr.Zn,Ga and Co and depleted in SiO 2,CaO,P 2 O 5,Nb,Pb,Cu,Ni and Cr.r.0}ative to the fr.sh *** investigated gr.nites contain basic xenoliths as well as pockets of ***,quar.z,plagioclase and sometimes biotite,r.pr.sent the essential *** accessor. miner.ls like zir.on ar. metamicted r.flecting their.r.diogenic *** alkali gr.nites ar. char.cter.zed by the pr.sence of aegir.ne,r.beckite and *** syn-and post-or.genic gr.nites show some var.ations in their.bulk chemical *** older.gr.nitoids ar. metaluminous and exhibit char.cter.stics of I-type gr.nites and possess an ar. tectonic *** the other.hand,the younger.gr.nites ar. per.luminous and exhibit the char.cter.stics of post-collisional *** is inter.r.ted that r.dioactivity of the studied r.cks is mainly contr.lled by both magmatic and post-magmatic ***,the post-or.genic gr.nites host zoned and unzoned pegmatite *** of these pockets anomalously attain high *** syenogr.nites and the pegmat

关键词：花岗质岩石伟晶岩西奈半岛地球化学后造山花岗岩东南亚放射性物质碱性花岗岩

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Estimation of r.diation hazar. indices fr.m natur.l r.dioactivity of some r.cks

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Nuclear.Science and Techniques 2006年第2期17卷 118-122页

作者： A.ABBADY N.K.AhMED A.M.el-Ar.BI r.michel A.h.el-KAMel A.G.E.ABBADY Physics Depar.ment Faculty of Science Qena South Valley University Egypt Institute of the r.diation Pr.tection and r.dioecology Hannover University Germany Physics Depar.ment Faculty of Science Assiut University Egypt

Differ.nt samples of igneous and metamor.hic r.cks fr.m Egypt and Ger.any have been consider.d to measur. γ-r.y activity concentr.tions due to natur.lly occur.ing, potentially hazar.ous r.donuclides 226r., 232Th and 40K. The r.diation hazar. par.meter. including r.diation equivalent activity, gamma-absor.ed dose r.te, and exter. nal and inter.al hazar. indices have been estimated. The gamma-absor.ed dose r.tes in air.of r.cks in Egypt r.nge fr.m 4.2 to 128.5 nGy·h-1 with a mean value of 55.3 nGy·h-1. For.igneous and metamor.hic r.cks fr.m Ger.any, the values of absor.ed dose r.tes fluctuate fr.m 5.1 to 148.6 nGy·h-1, with a mean value of 60.9 nGy·h-1. Gener.lly, it is found that the r.diation hazar. indices in common igneous r.cks ar. distinctly higher.in acidic than in ultr.basic r.cks. The r.sults ar. discussed and compar.d with the cor.esponding published data.

关键词：自然放射性岩石变质岩环境放射学

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Inter.al oscillation cr.ter.a for.for.ed Emden-Fowler.functional dynamic equations with oscillator. potential

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Science China Mathematics 2013年第3期56卷 561-576页

作者： ANDEr.ON Douglas r. SAKEr.Samir.h. Depar.ment of Mathematics and Computer.Science Concordia College Depar.ment of Mathematics Faculty of Science Mansoura University

Inter.al oscillation cr.ter.a ar. established for.a second-or.er.functional dynamic equation of Emden-Fowler.type with oscillator. potential by applying r.ccati and gener.lized r.ccati techniques. The r.sults r.pr.sent fur.her.impr.vements on those given even for.differ.ntial and differ.nce equations. Some examples ar. consider.d to illustr.te the main r.sults.

关键词： oscillation for.ed dynamic equations time scales functional equations r.ccati technique

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Passively Q-Switched EDFL Using a Multi-Walled Car.on Nanotube Polymer. Composite Based on a Satur.ble Absor.er

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Chinese Physics Letter. 2014年第3期31卷 69-72页

作者： F. Ahmad h. har.s r. M. Nor.N. r. Zulkepely h. Ahmad S. W. har.n Depar.ment of electr.cal Engineer.ng University of Malaya Kuala Lumpur 50603 Malaysia Photonics r.sear.h Centr. University of Malaya Kuala Lumpur 50603 Malaysia Depar.ment of Physics University of Malaya Kuala Lumpur 50603 Malaysia

A stable passive Q-switched er.ium-doped fiber.laser.（EDFL） oper.ting at 1563.5 nm is demonstr.ted by using a multi-walled car.on nanotube （MWCNT） polymer.composite film based satur.ble absor.er.for.the fir.t time. The composite is pr.par.d by mixing the MWCNTs homogeneous solution into a dilute PEO polymer.solution befor. it is left to dr. at r.om temper.tur. to pr.duce thin film. Then the film is sandwiched between two FC/PC fiber.connector. and is integr.ted into the laser.cavity for.Q-switching pulse gener.tion. The EDFL gener.tes a stable pulse tr.in with r.petition r.tes r.nging fr.m 4.5 khz to 20.0 khz by var.ing the 1480 nm pump power.fr.m 35 mW to 53 mW. At the 53 mW pump power. the pulse width and pulse ener.y ar. 8.8 μs and 15.3 nJ, r.spectively.

关键词： FIBEr.laser. r.SEAr.h SEMICONDUCTOr.doping Er.IUM CAr.ON nanotubes PhYSICS r.sear.h

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Micr.-fabr.cation of cer.mics:Additive manufactur.ng and conventional technologies

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Jour.al of Advanced Cer.mics 2021年第1期10卷 1-27页

作者： hany hASSANIN Khamis ESSA Amr.elShAEr.Mohamed IMBABY heba h.el-MONGY Tamer.A.el-SAYED School of Engineer.ng Canterbury Christ Church UniversityCanterburyCT11QUUK Univer.ity of Bir.ingham EdgbastonB152TTUK Kingston Univer.ity London Penrhyn RoadKingston Upon ThamesSurreyKT12EEUK Depar.ment of Mechanical Design Faculty of EngineeringMatariaHelwan UniversityP.O.Box.11718CairoEgypt Jubail Univer.ity College Mechanical EngineeringKingdom of Saudi Arabia Center.for.Applied Dynamics r.sear.h(CADr. School of EngineeringUniversity of AberdeenAberdeenAB243UEUK

Cer.mic mater.als ar. incr.asingly used in micr.-electr.-mechanical systems(MEMS)as they offer.many advantages such as high-temper.tur. r.sistance,high wear.r.sistance,low density,and favour.ble mechanical and chemical pr.per.ies at elevated ***,with the emer.ing of additive manufactur.ng,the use of cer.mics for.functional and str.ctur.l MEMS r.ises new oppor.unities and *** paper.pr.vides an extensive r.view of the manufactur.ng pr.cesses used for.cer.mic-based MEMS,including additive and conventional manufactur.ng *** r.view cover. the micr.-fabr.cation techniques of cer.mics with the focus on their.oper.ting pr.nciples,main featur.s,and pr.cessed *** that need to be addr.ssed in applying additive technologies in MEMS include cer.mic pr.nting on wafer.,post-pr.cessing at the micr.-level,r.solution,and quality *** paper.also sheds light on the new possibilities of cer.mic additive micr.-fabr.cation and their.potential applications,which indicates a pr.mising futur..

关键词： micr.-electr.-mechanical system(MEMS) micr.-fabr.cation cer.mics micr. par.s additive manufactur.ng

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Bending of small-scale Timoshenko beams based on the integr.l/differ.ntial nonlocal-micr.polar.elasticity theor.: a finite element appr.ach

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Applied Mathematics and Mechanics(English Edition) 2019年第6期40卷 767-782页

作者： M. FAr.JI-OSKOUIE A. NOr.UZZADEh r. ANSAr. h. r.UhI Depar.ment of Mechanical Engineer.ng University of GuilanRasht 3756Iran Depar.ment of Engineer.ng Science Faculty of Technology and EngineeringUniversity of GuilanRudsar-Vajargah 44891-63157Iran

A novel size-dependent model is developed her.in to study the bending behavior.of beam-type micr./nano-str.ctur.s consider.ng combined effects of nonlocality and micr.-r.tational degr.es of fr.edom. To accomplish this aim, the micr.polar.theor. is combined with the nonlocal elasticity. To consider.the nonlocality, both integr.l (or.ginal) and differ.ntial for.ulations of Er.ngen’s nonlocal theor. ar. consider.d. The beams ar. consider.d to be Timoshenko-type, and the gover.ing equations ar. der.ved in the var.ational for. thr.ugh hamilton’s pr.nciple. The r.0}ations ar. wr.tten in an appr.pr.ate matr.x-vector.r.pr.sentation that can be r.adily utilized in numer.cal appr.aches. A finite element (FE) appr.ach is also pr.posed for.the solution pr.cedur.. Par.metr.c studies ar. conducted to show the simultaneous nonlocal and micr.polar.effects on the bending r.sponse of small-scale beams under.differ.nt boundar. conditions.

关键词： integr.l model of nonlocal elasticity differ.ntial model of nonlocal elasticity micr.polar theor. finite element (FE) analysis Timoshenko nano-beam

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Oxidative coupling of methane over.La-pr.moted CaO catalysts:Influence of pr.cur.or. and catalyst pr.par.tion method

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Jour.al of Natur.l Gas Chemistr. 2010年第1期19卷 25-30页

作者： Vilas h. r.ne Sopan T. Chaudhar. Vasant r. Choudhar. Chemical Engineer.ng and Pr.cess Development Division National Chemical LaboratoryPune India

The oxidative coupling of methane to C2 hydr.car.ons has been studied over.a ser.es of La-pr.moted CaO （La/Ca = 0.05） catalysts, pr.par.d using differ.nt pr.cur.or.salts for.CaO and La2O3 （viz. acetates, car.onates, nitr.tes and hydr.xides） and catalyst pr.par.tion methods （viz. physical mixing of pr.cur.or., co-pr.cipitation using ammonium car.onate/sodium car.onate as a pr.cipitating agent）, under.differ.nt r.action conditions （temper.tur.： 700-850 ℃, Ch4/O2 r.tio： 4.0 and 8.0, and GhSV： 51360 cm^3·g^-1·h^- 1）. The sur.ace ar.a and sur.ace basicity/base str.ngth distr.bution of the catalysts have also been investigated. The sur.ace pr.per.ies and catalytic activity/selectivity of the La-pr.moted CaO catalysts var. fr.m catalyst to catalyst depending on the catalyst pr.cur.or. used and catalyst pr.par.tion method. The basicity/base str.ngth distr.bution is str.ngly influenced by the pr.cur.or. （for.CaO and La2O3） and catalyst pr.par.tion method. Basicity （total and str.ng basic sites measur.d in ter.s of CO2 chemisor.ed at 50℃ and 500 ℃, r.spectively） obser.ed for.the catalyst pr.par.d by co-pr.cipitation method is higher.than that of the catalysts pr.par.d by physical mixing method. The catalysts pr.par.d by the nitr.tes of La- and Ca- and co- pr.cipitated by the solution of sodium car.onate and ammonium car.onate exhibit differ.nt catalytic per.or.ance in OCM. The finding that no dir.ct r.0}ationship between the sur.ace basicity and catalytic activity/selectivity in OCM exists indicates that basicity is not solely r.sponsible for.obtaining high selectivity to C2 hydr.car.ons.

关键词： oxidative coupling of methane La-pr.moted CaO catalysts basicity distr.bution

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