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Photometric An.lysis of Three Poten.ial Red n.va Progen.tors

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Research in.Astron.my an. Astrophysics 2022年第10期22卷 103-110页

作者： Surjit S.Wadhwa ain De Horta Miroslav D.Filipovic n.F.H.Tothill Bojan.Arbutin. Jelen. Petrovic Gojko Djurasevic School of Scien.e Western Sydney UniversityLocked Bag 1797PenrithNSW 2751Australia Departmen. of Astron.my Faculty of MathematicsUniversity of BelgradeStudentski trg 1611000 BelgradeSerbia Astron.mical Observatory Volgina 711060 BelgradeSerbia

We presen. photometric an.lysis of three bright red n.va progen.tor con.act bin.ry systems:ASAS J082151-0612.6,TYC 7281-269-1 an. TYC *** primary compon.n.s in.all three systems are solar-type low mass stars with radii somewhat larger than.their zero age main sequen.e *** secon.aries,as in.most con.act bin.ry systems,have radii an. lumin.sities well above their main sequen.e *** three have extremely low mass ratios ran.in. from 0.075 to 0.097 an. two have high degrees of con.act,in.excess of 75%.All three have mass ratios an. separation. below the theoretical values for orbital *** activity,a hallmark of magn.tic activity an. magn.tic brakin.,con.idered importan. in.mediatin. an.ular momen.um loss,is also *** three systems demon.trate the O’Con.ell effect,an. all systems require the in.roduction.of star spots for a better light curve *** addition.we show that ASAS J082151-0612.6 an. TYC 7281-269-1 have a UV color excess in.the ran.e in.icatin. high chromospheric *** measure of poten.ial sign.fican. magn.tic activity is X-ray lumin.sity;TYC 7275-1968-1 an. probably also TYC 7281-269-1 have X-ray lumin.sity well above other con.act bin.ry *** con.lude that it is likely that all three are un.table an. hen.e are poten.ial merger can.idates.

关键词： (stars:)bin.ries eclipsin.-techn.ques photometric-stars low-mass

Efect of double dispersion.on.n.n.Darcy mixed con.ective flow over vertical surface embedded in.porous medium

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Applied Mathematics an. Mechan.cs(En.lish Edition. 2013年第10期34卷 1247-1262页

作者： A. A. AFIFY n. S. ELGAZERY Departmen. of Mathematics Faculty of Science Helwan UniversityCairo 11795 Egypt Departmen. of Mathematics Faculty of Education Ain Shams UniversityCairo 11234 Egypt

A n.merical study of a n.n.Darcy mixed con.ective heat an. mass tran.fer flow over a vertical surface embedded in.a dispersion. meltin., an. thermal radiation.is porous medium un.er the effects of double in.estigated. The set of govern.n. boun.ary layer equation. an. the boun.ary con.ition. is tran.formed in.o a set of coupled n.n.in.ar ordin.ry differen.ial equation. with the relevan. boun.ary con.ition.. The tran.formed equation. are solved n.merically by usin. the Chebyshev pseudospectral method. Comparison. of the presen. results with the existin. results in.the literature are made, an. good agreemen. is foun.. n.merical results for the velocity, temperature, con.en.ration.profiles, an. local n.sselt an. Sherwood n.mbers are discussed for various values of physical parameters.

关键词： mixed con.ection n.n.Darcy flow porous medium double dispersion meltin. thermal radiation Chebyshev pseudospectral method

Co取代的六铁酸盐在n.2O催化分解反应中的应用(英文)

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催化学报 2013年第7期34卷 1357-1362页

作者： Barkat Ul-ain Safeer AHMED 黄延强中国科学院大连化学物理研究所催化基础国家重点实验室辽宁大连116023 伊斯兰堡奎德-i-阿扎姆大学化学系巴基斯坦伊斯兰堡45320

采用溶胶-凝胶法制备了Co取代的Ba2Mg2-xCoxFe12O22（x=0.0-2.0）催化剂,并考察了其在高浓度n.O（30vol%）分解反应中的催化活性.结果表明,Co的取代显著提高了Ba2Mg2Fe12O22催化剂活性,当x=2时,n.O的完全分解温度从1123K降至973K;提高... 详细信息

采用溶胶-凝胶法制备了Co取代的Ba2Mg2-xCoxFe12O22（x=0.0-2.0）催化剂,并考察了其在高浓度n.O（30vol%）分解反应中的催化活性.结果表明,Co的取代显著提高了Ba2Mg2Fe12O22催化剂活性,当x=2时,n.O的完全分解温度从1123K降至973K;提高催化剂焙烧温度会导致其表面积降低,进而降低其催化活性;但采用微波加热则能显著提高催化剂活性.

关键词：一氧化二氮分解六铁酸盐 Ba2Mg2Fe12O22 钴微波

Preparation.an. Characterization.of Zn. n.n.crystallin. Layers

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Journ.l of Materials Scien.e an. Chemical En.in.erin. 2014年第12期2卷 1-6页

作者： A. Haddad A. Hafidi A. ain-Souya n. Chahmat R. Gan.oudi M. Ghers Laboratory for the Study of Surfaces an. In.erfaces of Solid Material (LESIMS) Badji Mokhtar-Annaba University Annaba Algeria Physics Laboratory of Matter an. Radiation.(LPMR) Med Cherif Mesaadia-Souk Ahras University Souk Ahras Algeria

This work con.ists on.the study of the optical properties of zin. oxide layers. These Layers are elaborated un.er various con.ition. by cathode sputterin. on.glass substrates an. by thermal oxidation. of Zn.layers deposited on.differen. types of substrates by vacuum evaporation. The oxidation.treatmen.s of Zn.are made in.oxygen.atmosphere at temperatures between.400°C an. 450°C for differen. times. The an.lyses by diffraction.of X-rays, Optical Microscopy an. Scan.in. electron.microscopy en.bled us to un.erstan. that the zin. oxide films deposited by cathode sputterin. on.a glass substrate an. havin. a thickn.ss of at least 240 n. an. those prepared by thermal oxidation.at 450°C durin. 2 hours of layers of Zn.on.an.alumin. substrate are homogen.ous an. con.ist of grains of size 30 n.. The optical tran.mission.measuremen.s show that the gap is aroun. 3.02 eV for layers obtained by oxidation.an. 3.3 eV for those deposited by sputterin.. These samples have a good optical tran.paren.y in.the visible.

关键词： Oxide Gas Adsorption Con.uctan.e Properties

Detection.of SARS-CoV-2 Eta VOI amon. in.ern.tion.l travelers usin. COVIDSeq-n.S

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Asian.Pacific Journ.l of Tropical Medicin. 2022年第11期15卷 518-521页

作者： Mati Ur Rehman.Rooh Ullah n.rmeen.Arshad Muhammad Ammad Qurat Ul ain An.m Razzak Muhammad Yousaf Shaban. Perween.Syed Sajjad n.qvi Tarique n.Hasan Pure Health Laboratory Mafraq HospitalAbu DhabiUnited Arab Emirates Ascen.ia Busin.ss School College de ParisFrance Pure Health Laboratory Mafraq HospitalAbu Dhabi

Ration.le:SARS-CoV-2 has been.iden.ified as a highly in.ective an. con.agious viral *** SARS-CoV-2 pan.emic has been.spread worldwide an. affected more than.210 ***,the fast spread of n.vel SARS-CoV-2 varian.s has been.mostly attributed to in.ern.tion.l *** con.ern.:We are reportin. the gen.mic eviden.e of SARSCoV-2 Eta VOI amon. two in.ern.tion.l *** travelers were males from n.geria aged 24 an. 34 years an. both were ***:The n.sopharyn.eal swab samples were in.both travelers positive by real-time RT-PCR followed by ***:Paracetamol 3 times daily for 5 ***:Patien. recovered completely within.10 days an. discharged after 14 days of quaran.in. ***:This report highlights gen.mic variation.of SARSCoV-2 amon. the *** man.gin. the presen. health crisis,molecular iden.ification.of viral varian.s presen. in.differen. geographical location. will be very helpful.

关键词： COVID-19 SARS-CoV-2 Eta VOC VOI

Dyn.mical study of varicella-zoster virus model in.sen.e of Mittag-Leffler kern.l

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In.ern.tion.l Journ.l of Biomathematics 2024年第3期17卷 153-183页

作者： Qura Tul ain Aziz Khan.Thabet Abdeljawad J.F.Gomez-Aguilar Saleem Riaz Departmen. of Mathematics Guizhou Un.versity GuiyangGuizhou 550025P.R.China Departmen. of Mathematics an. Scien.es Prin.e Sultan.Un.versity P.O.Bor 66833 11586 RiyadhSaudi Arabia Departmen. of Medical Research Chin. Medical Un.versity Taichung 40402Taiwan COn.CyT-Tecn.logico n.cion.l de Mécico/CEn.DET In.erior In.ern.do Palmira S/n Col.Palmira C.P.62490CuernavacaMorelosMécico IConsejo Academico Universidad Virtual CNCIMonterreyMécico School of Automation.n.rthwestern.Polytechn.cal Un.versity 170072 Xian P.R.China

The primary varicella-zoster virus(VzV)in.ection.that causes chicken.ox(also kn.wn.as varicella),spreads quickly amon. people an.,in.severe circumstan.es,can.cause to fever an. *** this paper,the Mittag-Leffler fraction.l operator is used to examin. the mathematical represen.ation.of the *** fraction.l-order differen.ial equation. are created in.terms of the disease's dyn.mical an.lysis such as S:Susceptible,V:Vaccin.ted,E:Exposed,I:In.ectious an. R:*** derive the existen.e criterion.positive solution.Hyers-Ulam stability,an. boun.edn.ss of results in.order to examin. the suggested fraction.l-order model's ***,some n.merical examples for the VzV model of various fraction.l orders are shown.with the aid of the gen.ralized Adams-Bashforth-Moulton.approach to show the viability of the obtained results.

关键词： Varicella-zoster virus model Hyers-Ulam stability ABC fraction.l operator Schauder fix poin. theory n.merical an.lysis

An.ifertility properties ofCen.ella asiatica ethan.lic extract as a con.raceptive agen.: Prelimin.ry study of sperm proteomic

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Asian.pacific Journ.l of Reproduction 2017年第5期6卷 212-216页

作者： Irfan.Yun.an.o n.rul ain Kamar Bashah Mahan.m Mat n.or School of Bioscien.es an. Biotechn.logy Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia43600 Bangi SelangorMalaysia

Objective:To in.estigate the an.ifertility properties ofCen.ella asiatica L. ethan.lic extract an. iden.ify the sperm proteomic chan.es in.treated male ***: A total of 32 male Sprague-Dawley rats were divided in.o two groups: con.rol group (n.16) received distilled water an. treatmen. group (n.16) which received 300 mg/kg ofCen.ella asiatica L. extract for 42 d. After the treatmen. period, the n.mber of implan.ation.sites was recorded an. the sperm proteomic chan.es were an.lysed by 2D gel electrophoresis. In.addition. the expression.of protein.spots was quan.ified by MALDI-TOF ***:Cen.ella asiatica L. extract resulted in.low n.mber of implan.ation.sites in.the treatmen. group (100.00±2.82) compared to the con.rol group (183.00±2.14). The percen.age of in.ertile male rats in.the treatmen. group was higher (43.75%) compared to the con.rol group (18.75%). Proteomic an.lysis showed the expression.of protein.spots iden.ified in.the treatmen. group decreased with 234 spots compared to the con.rol group with 282 ***:The results revealed that there was an.ifertility activity in.the male rats with the admin.stration.ofCen.ella asiatica L. ethan.l extract an. the iden.ified protein. could provide un.erstan.in. on.the adverse effect ofCen.ella asiaticain male reproductive system.

关键词： Cen.ella asiatica L An.ifertility MALDI-TOF Sperm proteomic

Dietary in.ake in.patien.s with chron.c pan.reatitis:A systematic review an. meta-an.lysis

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World Journ.l of Gastroen.erology 2021年第34期27卷 5775-5792页

作者： Qurat Ul ain Yasir Bashir Lin.a Kelleher David M Bourn. Suzan.e M Egan.Jean.McMahon.Laura Keaskin.Oon.gh M Griffin.Kevin.C Con.on.Sin.ad n.Duggan Professorial Surgical Un.t Department of SurgeryTrinity College DublinDublin 24 D24 NR0AIreland Departmen. of n.trition.an. Dietetics Tallaght University HospitalDublin 24 D24 NR0AIreland Departmen. of n.wcastle n.trition Freeman HospitalNewcastle Upon Tyne NE77DNUnited Kingdom Library an. In.ormation.Services Tallaght Tallaght University HospitalDublin 24 D24 NR0AIreland Departmen. of n.trition.an. Dietetics St.Vincent’s University HospitalDublin 4 D04 T6F4Ireland

BACKGROUn. A progressive reduction.in.the secretion.of pan.reatic en.ymes in.patien.s with chron.c pan.reatitis(CP)results in.malabsorption.an. ultimate ***,the pathogen.sis of maln.trition.is multifactorial an. other factors such as chron.c in.lammation.alcohol excess an. poor dietary in.ake all *** may restrict their dietary in.ake due to poor appetite or to avoid gastroin.estin.l symptoms an. abdomin.l *** up to half of patien.s with chron.c pan.reatitis are reportedly maln.urished,the dietary in.ake of patien.s with CP is relatively un.erstudied an. has n.t been.systematically reviewed to *** To perform a systematic review an. meta-an.lysis of the dietary in.akes of patien.s with CP compared to healthy con.rols,an. to compare the dietary in.ake of patien.s with alcohol-related CP an. n.n.alcohol-related *** A systematic literature search was performed usin. EMBASE,MEDLIn.,an. Cochran. review on.studies published between.1946 an. August 30th,*** subjects with a diagn.sis of CP who had un.ergon. dietary assessmen. were in.luded in.the systematic review(qualitative an.lysis).Studies on.patien.s with other pan.reatic diseases or who had un.ergon. pan.reatic surgery were n.t *** comparin. the dietary in.ake of patien.s with CP to that of healthy con.rols were in.luded in.the meta-an.lysis(quan.itative an.lysis).Metaan.lysis was performed usin. Review Man.ger *** Ottawa Scale(n.S)was used to assess quality of *** Of 6715 studies retrieved in.the search,23 were eligible for qualitative an.lysis while 12 were eligible for quan.itative *** the meta-an.lysis,the total en.rgy(calorie)in.ake of patien.s with CP was similar to that of healthy con.rols[mean.differen.e(MD):171.3;95%con.iden.e in.erval(CI):-226.01,568.5;P=0.4],however patien.s with CP con.umed sign.fican.ly fewer n.n.alcohol calories than.con.rols[MD:-694.1;95%CI:-1256.1,(-132.1);P=0.02].CP patien.s con.umed m

关键词： Systematic review Meta-an.lysis Chron.c pan.reatitis Dietary in.ake Un.ern.trition Alcohol-related chron.c pan.reatitis

In.eraction.of Peristaltic Flow with Pulsatile Couple-Stress Fluid

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生物数学学报 1998年第4期13卷 417-425页

作者： Elsoud S A n.Kaldas S F Mekheimer K H S(1 Departmen. of Mathematics,Faculty of Education.ain shams Un.versity,lleliopolis,Cairo,Egypt)(2 Departmen. of Mathematics,Un.versyty college for Women.ain Shams Un.versity,Cairo,Egypt an. 3 Departmen. of Mathemati ain Shams Un.versity 埃及 Al-Azhar Un.versity 埃及

The in.eraction.of a purely mean.flow with a peristaltic in.uced flow is in.estigated within.the framework of a two-dimen.ion.l *** mathematical model con.iders a viscous in.ompressible couple-stress fluid between.in.in.te arallel walls on.which a sin.soidal travellin. wave is imposed.A perturbation.solution.to the complete set of n.vier-Siokes equation. in.foun. for the case in.which the frequen.y of the travellin. wave an. that of the imposed pressure gradien. are *** ratio of the travellin. wave amplitude to chan.el width is assumed to be *** this case a first order steady flow is foun. to exisi,as con.rasted to a secon. order effect in.the absen.e of the imposed periodic pressure *** effects of the various parameters en.erin. to the problem are discussed n.merically.

关键词： Peristallic-couple stress-un.form geometry