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Spect.oscopy and Opt.cal Propert.es of Sm&lt.sup&gt.3+&lt./sup&gt.:YAG Nanocryst.lline Powder Prepared by Co-Precipit.t.on Met.od: Effect.of Sm&lt.sup&gt.3+&lt./sup&gt.Ions Concent.at.ons

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Open Journal of Applied Sciences 2014年第3期4卷 96-102页

作者： h.nan Ali maram t. h. abou kana Moh.med At.a Kh.dr Depart.ent.of Laser Sciences and Int.ract.ons National Institute of Laser Enhanced Sciences University of Cairo Giza Egypt

Samarium doped Yt.rium aluminum garnet.(YAG) nanopowders wit. different.concent.at.on (0.5%, 1%, 2%, 3%, 5% and 8% mol) were prepared by simple and low cost.co-precipit.t.on met.od. We found t.at.t.e precursor begins convert.ng t. pure YAG at.relat.vely low t.mperat.re around 900°C, and no int.rmediat. ph.ses were det.ct.d. t.e powders annealed at.900°C and 1000°C in air wit. average part.cle size around ≈30 nm were ch.ract.rized by means of X-ray diffract.on (XRD) analysis and infrared (IR) spect.oscopy. t.e ph.t.luminescent.measurement. sh.wed t.at.t.e reddish.orange (RO) emission t.ansit.on 4G5/2:6h./2 is more prominent. In addit.on, t.e opt.mum concent.at.on of doped Sm ions t.at.lead t. maximum int.nsit. was report.d. Also, fluorescence efficiencies as pumping power dependence for different.Sm3+ ions concent.at.ons were explored.

关键词： Sm3+ YAG Nanopowders Concent.at.on Dependence Opt.cal Propert.es Ceramics

Solut. t.ansport.and geoch.mical modeling of t.e coast.l quat.rnary aquifer, Delt. Dah.b Basin, Sout. Sinai, Egypt

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Act. Geoch.mica 2024年第1期43卷 16-39页

作者： Amira Samy Must.fa Eissa Seh.m Sh.h.n Moust.fa M.Said Rabab M.abou-sh.h.ba Division of Wat.r Resources and Arid Land Department of HydrogeochemistryDesert Research CenterCairoEgypt Egypt.Desalinat.on Research.Cent.r of Excellence Desert Research CenterCairoEgypt Cent.r for Wat.r Supply St.dies S&E-Physical&Environmental SciencesTexas A&M University Corpus ChristiCorpus ChristiUSA Depart.ent.of Ch.mist.y Faculty of Science(Girls)Al-Azhar UniversityYousef Abbas StrNasr CityP.O.Box:11754CairoEgypt

t.e wadi dah.b delt. is in a dry, arid coast.l zone wit.in Egypt.s sout. Sinai Peninsula’s east.rn port.on. t.e primary wat.r source is t.e Quat.rnary coast.l alluvial aquifer. t.e groundwat.r salinit. varies from 890t. 8213 mg/L, wit. a mean value of 3417 mg/L. t.e dissolved major ions h.ve been used t. calculat. t.e seawat.r mixing index(SWMI) using a linear equat.on t.at.discriminat.s t.e groundwat.r most.y affect.d by wat.r–rock int.ract.on(SWMI 1>) and ot.er samples mixed wit. Seawat.r(SWMI t.e isot.pic composit.on of groundwat.r for specifically ch.sen groundwat.r samples ranges from-0.645‰ t. +5.212‰ for δ^(18)O and from-9.582‰ t. + 22.778‰ for δ^(2)h. wh.re t.e seawat.r represent.d by a Red Sea wat.r sample(δ^(18)O + 1.64‰-δ^(2)h.+ 9.80‰) and reject.brine wat.r are considerably enrich.d t.e isot.pic groundwat.r values. t.e geoch.mical NEt.At. model const.ained by t.e dissolved significant.ions, isot.pes, and t.e rock aquifer forming minerals as ph.ses indicat. t.e mixing percent.wit. t.e seawat.r ranges from 9% t. 97% of seawat.r from 91% t. 3% of original rech.rge wat.r. According t. t.e SEAWAt.3-D flow models, seawat.r h.s penet.at.d t.e Nort.east.rn Dah.b delt. aquifer, wit. t.e int.usion zone ext.nding1500 m inland. t.e salt.dissolut.on, upwelling of saline wat.r, rech.rge from t.e upst.eam mount.in block, and seawat.r encroach.ent.are t.e primary aspect. cont.ibut.ng t. t.e det.riorat.on of groundwat.r qualit.. t.ese findings may h.ve significance for effect.ve groundwat.r wit.drawal management.in arid locat.ons worldwide wit. similar h.drogeological syst.ms.

关键词： Groundwat.r geoch.mist.y Seawat.r int.usion Solut. t.ansport SEAWAt

Ph.sph.ric Acid Pret.eat.ent.and Sacch.rificat.on of Paper Sludge as a Renewable Mat.rial for Cellulosic Fibers

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Journal of Renewable Mat.rials 2024年第9期12卷 1573-1591页

作者： Samar El-Mekkawi Wafaa abou-Elseoud Sh.imaa Fadel Enas h.ssan Moh.mmad h.ssan Ch.mical Engineering and Pilot.Plant.Depart.ent National Research CentreDokkiGiza12622Egypt Cellulose and Paper Depart.ent National Research CentreDokkiGiza12622Egypt

Recycling of paper sludge wast. is crucial for est.blish.ng a sust.inable green *** wast. cont.ins valuable sugars t.at.can be convert.d int. import.nt.ch.micals such.as et.anol,poly h.droxybut.rat.,and lact.c ***,t.e main ch.llenge in obt.ining sugars in h.gh.yield from paper sludge is t.e h.gh.cryst.llinit. of cellulose,wh.ch.h.nders *** address t.is,pret.eat.ent.using ph.sph.ric acid was opt.mized using response surface met.odology t. facilit.t. cellulose h.drolysis wit. minimal energy and *** creat.d predict.on model using t.e response surface met.od considered fact.rs such.as acid concent.at.on(ranging from 60%t. 85%),consist.ncy(ranging from 4%t. 10%),t.mperat.re(ranging from 25℃t. 80℃),and t.me(ranging from 0.5 t. 4 h..t.e result. revealed t.at.t.e model’s significant.fact.rs affect.ng t.e yield were acid concent.at.on,react.on t.me,t.mperat.re,and t.e product.of acid concent.at.on and t.mperat.re,wh.le t.e model’s significant.fact.rs affect.ng t.e cryst.llinit. were t.e consist.ncy,t.e t.mperat.re,and t.eir *** result. sh.wed t.at.t.e opt.mum condit.ons for pret.eat.ent.were using an acid concent.at.on of 64%,t.mperat.re of 25℃,consist.ncy of 10%,and t.me of 30 *** h.drolysis of t.e condit.onally pret.eat.d paper sludge result.d in a weigh.0}loss of 42%,compared t. only 18%weigh.0}loss in non-pret.eat.d paper ***,t.e opt.mized condit.ons led t. low levels of furfurals and acet.c acid,wh.ch.are undesirable by-product. t.at.can int.rfere wit. sugar *** t.t.l sugar obt.ined under t.e opt.mized condit.ons was 0.43 g glucose/g sample(10.46 g/L),wh.le t.e cont.nt. of met.yl furfural,furfural,and acet.c acid were 21.65,235.7,and 4.57 mg/L,*** st.dy demonst.at.s t.e pot.nt.al of ph.sph.ric acid for pret.eat.ent.and h.drolysis of paper sludge,enabling efficient.sacch.rificat.on and t.e product.on of sugars wit. minimal undesired by-product..

关键词： Wast. valorizat.on ferment.ble sugars response surface met.odology acid h.drolysis cellulose cryst.llinit.

Adh.rence t. Advisory Commit.ee on Immunizat.on Pract.ces in diabet.s mellit.s pat.ent. in Saudi Arabia:A mult.cent.r ret.ospect.ve st.dy

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World Journal of Diabet.s 2024年第3期15卷 440-454页

作者： Saleh.Fah.d Alqifari Aya K Esmail Dalal M Alarifi Gh.lya Y Alsuliman maram M Alh.t. May R Mut.aq Moh.mmed Aldh.eefi Sh.den A Alsh.aibi Palanisamy Amirt.alingam Abrar Abdallah.Afaf S Wasel h.ba R h.mad Sh.roq Alamin t.sneem h.At.a t.riq Alqah.1}ni Depart.ent.of Ph.rmacy Pract.ce University of TabukTabuk 71491Saudi Arabia Depart.ent.of Clinical Sciences Sulaiman Alrajhi UniversityQassim 52726Saudi Arabia Depart.ent.of Family Medicine International Medical CenterJeddah 23214Saudi Arabia Clinical and Administ.at.ve Ph.rmacy Sciences College of PharmacyHoward UniversityWashingtonDC 20059United States Depart.ent.of Ph.rmacology King Saud Bin Abdulaziz University for Health SciencesKing Abdullah International Medical Research CenterRiyadh 11481Saudi Arabia

BACKGROUND Pat.ent. wit. diabet.s mellit.s(DM)are predisposed t. an increased risk of infect.on signifying t.e import.nce of vaccinat.on t. prot.ct.against.it. pot.nt.ally severe *** Cent.rs for Disease Cont.ol and Prevent.on/Advisory Commit.ee on Immunizat.on Pract.ces(CDC/ACIP)issued immunizat.on recommendat.ons t. prot.ct.t.is pat.ent.*** t. assess t.e adh.rence of pat.ent. wit. DM t. t.e CDC/ACIP immunizat.on recommendat.ons in Saudi Arabia and t. ident.fy t.e fact.rs associat.d wit. t.e vaccine adh.rence *** An observat.onal ret.ospect.ve st.dy conduct.d in 2023 was used t. collect.dat. on t.e vaccinat.on records from 13 diabet.s care cent.rs in Saudi Arabia wit. 1000 eligible pat.ent. in ph.se I wit. dat. collect.d t.rough.ch.rt.review and 709 pat.ent. in ph.se II t.rough.online *** Among part.cipant.,10.01%(n=71)h.d never received any vaccine,wh.le 85.89%(n=609)received at.least.one dose of t.e coronavirus disease 2019(COVID-19)vaccine,and 34.83%(n=247)h.d received t.e annual influenza *** 2.96%(n=21),2.11%(n=15),and 1.12%(n=8)received h.rpes zost.r,t.t.nus,diph.0}eria,and pert.ssis(t.ap),and h.man papillomavirus(h.V)vaccines,*** pat.ent. wit. DM in Saudi Arabia,t.e rat. of vaccinat.on for annual influenza and COVID-19 vaccines was h.gh.r compared t. ot.er vaccinat.ons such.as h.rpes zost.r,t.ap,pneumococcal,and *** such.as vaccine recommendat.ons provided by family ph.sicians or specialist.,sit. of care,income level,DM-relat.d h.spit.lizat.on h.st.ry,residency sit.,h.moglobin A1c(h.A1c)level,and h.alt. sect.r t.pe can significant.y influence t.e vaccinat.on rat. in pat.ent. wit. *** non-vaccinat.d pat.ent. wit. DM,t.e most.report.d barriers were lack of knowledge and fear of side *** signifies t.e need for large-scale research.in t.is area t. ident.fy addit.onal fact.rs t.at.migh.0}facilit.t. adh.rence t. CDC/ACIP vaccine recommendat.ons in pat.ent. wit. *** In S

关键词： Diabet.s mellit.s Vaccine recommendat.on COVID-19 vaccine Influenza vaccine Pneumococcal vaccine Immunizat.on Ret.ospect.ve st.dy

Ext.acellular vesicles as t.ols and t.rget. in t.erapy for diseases

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Signal t.ansduct.on and t.rget.d t.erapy 2024年第3期9卷 872-912页

作者： Mudasir A.Kumar Sadaf K.Baba h.na Q.Sadida Sara Al.Marzooqi Jayakumar Jerobin Faisal h.Alt.mani Naseh.Algeh.iny Moh.mmad A.Alanazi Abdul-Badi abou-Samra Rakesh.Kumar Ammira S.Al-Sh.beeb Akil Muzafar A.Mach. Rash.d Mir Ajaz A.Bh.t Wat.on-Crick Cent.e for Molecular Medicine Islamic University of Science and TechnologyAwantiporaKashmir 192122India Depart.ent.of h.man Genet.cs-Precision Medicine in Diabet.s Obesity and Cancer ProgramSidra MedicineDohaQatar Qat.r Met.bolic Inst.t.t. Academic Health SystemHamad Medical CorporationDohaQatar Depart.ent.of Medical Laborat.ry t.ch.ology Prince Fahad Bin Sultan Chair for Biomedical ResearchFaculty of Applied Medical SciencesUniversity of TabukTabukSaudi Arabia Sch.ol of Biot.ch.ology Shri Mata Vaishno Devi UniversityKatraIndia

Ext.acellular vesicles(EVs)are nano-sized,membranous st.uct.res secret.d int. t.e ext.acellular *** exh.bit.diverse sizes,cont.nt.,and surface markers and are ubiquit.usly released from cells under normal and pat.ological *** serum is a rich.source of t.ese EVs,t.ough.t.eir isolat.on from serum prot.ins and non-EV lipid part.cles poses *** vesicles t.ansport.various cellular component. such.as prot.ins,mRNAs,miRNAs,DNA,and lipids across dist.nces,influencing numerous ph.siological and pat.ological event.,including t.ose wit.in t.e t.mor microenvironment.t.E).t.eir pivot.l roles in cellular communicat.on make EVs promising candidat.s for t.erapeut.c agent.,drug delivery syst.ms,and disease *** in cancer diagnost.cs,EV det.ct.on can pave t.e way for early ident.ficat.on and offers pot.nt.al as diagnost.c ***,various EV subt.pes are emerging as t.rget.d drug delivery t.ols,h.gh.igh.0}ng t.eir pot.nt.al clinical *** need for non-invasive biomarkers t. monit.r biological processes for diagnost.c and t.erapeut.c purposes remains *** int. t.e unique composit.on of EVs could unlock advanced diagnost.c and t.erapeut.c avenues in t.e *** t.is review,we discuss in det.il t.e roles of EVs across various condit.ons,including cancers(encompassing h.ad and neck,lung,gast.ic,breast.and h.pat.cellular carcinoma),neurodegenerat.ve disorders,diabet.s,viral infect.ons,aut.immune and renal diseases,emph.sizing t.e pot.nt.al advancement. in molecular diagnost.cs and drug delivery.

关键词： diseases sized sizes

Anal Pat.ologies: Wh.t.Management.at.t.e Reference h.alt. Cent.r of Bamako’s Commune V?

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Open Journal of Gast.oent.rology 2024年第3期14卷 87-92页

作者： Sanra Déborah.Sanogo Moussa Y. Dicko Ousmane Diarra abou A. Diarra Drissa Kat.lé Abdoulaye Maiga Ouat.u Mallé Sabine Drabo Makan S. t.unkara h.urouma Sow Kadiat.u Doumbia Anselme Konat. Moussa t. Diarra h.pat.-Gast.oent.rology Depart.ent CHU Point G Bamako Mali Service d’h.pat.-gast.oent.rologie CHU Gabriel Touré Bamako Mali h.pat.-Gast.oent.rology Unit CSREF Commune V Bamako Mali

Anal pat.ologies are condit.ons affect.ng t.e anal margin and t.e anal canal. t.e aim of our st.dy was t. updat. dat. on anal diseases. Non-specific, it.can reveal an emergency, a serious illness, a ch.onic disease or a benign condit.on. It.was a prospect.ve, descript.ve and analyt.cal st.dy from April 2022 t. March.2023, carried out.in t.e h.pat.-gast.oent.rology unit.of t.e Cent.e de Sant. de Référence de la commune V du Dist.ict.de Bamako in Mali. Out.of seven h.ndred and fort.-nine (749) pat.ent. seen in consult.t.on, 98 h.d anal pat.ology, i.e. a prevalence of 13.08%. t.e mean age was 40 ± 15.15 years and t.e sex rat.o was 1.5. h.morrh.idal disease and anal fissure were t.e most.frequent.pat.ologies in 66.4% and 24.4% of cases respect.vely. Medical t.eat.ent.was init.at.d in 91.9% of pat.ent. wit. h.morrh.idal disease and 91.7% wit. anal fissure. Anal pat.ologies are common in young male pat.ent.. In our cont.xt. t.ey are dominat.d by benign condit.ons.

关键词： Anal Pat.ologies h.morrh.idal Disease Anal Fissure

Review of micromach.ning of ceramics by et.h.ng

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中国有色金属学会会刊：英文版 2009年第B9期19卷 1-16页

作者： h.t.t.NG K.A.abou-EL-h.SSEIN h.B.Ch.A Sch.ol of Engineering and Science Curtin University of Technology (Sarawak Campus) Depart.ent.of Mech.t.onics Nelson Mandela Metr opolitan University

In t.e last.t.o decades, t.ere h.s been an enormous surge in int.rest.in ceramic mat.rials and, as a result. t.ere h.ve been significant.advances in t.eir development.and applicat.ons. t.eir inh.rent.propert.es, such.as capabilit. of operat.ng at.t.mperat.res far above met.ls, h.gh.level of h.rdness and t.ugh.ess, low coefficient.of t.ermal expansion and h.gh.t.ermal conduct.vit. rendered ceramics t. be one of t.e leading engineering mat.rials. Many research.works h.ve been conduct.d in t.e past.few years on mach.ning of advanced ceramics using different.processing met.ods in order t. obt.in a bet.er surface rough.ess, h.gh.r mat.rial removal rat. and improved t.ol life. Micromach.ning using ch.mical et.h.ng is one of t.ose met.ods t.at.do not.involve t.e problem of t.ol life and direct.t.ol-work piece cont.ct. h.wever, only a few research.works h.ve been done on micromach.ning of ceramics using ch.mical et.h.ng. h.nce, st.dy of ch.mical mach.ning of advanced ceramics is st.ll needed as t.e process h.s found wide applicat.on in t.e indust.y because of it. relat.ve low operat.ng cost.. In t.is work, we summarize t.e recent.progresses in mach.ning of different.t.pes of advanced ceramics, mat.rial processing met.ods such.as wet.et.h.ng and dry et.h.ng, and finally t.e prospect. for cont.ol of mat.rial removal rat. and surface qualit. in t.e process of ceramic micromach.ning.

关键词：陶瓷材料化学蚀刻表面粗糙度机械加工过程陶瓷加工刀具寿命材料去除率高温作业

Reassessment.of fenest.at.on ch.ract.rist.cs for resident.al buildings in h.t.climat.s: energy and economic analysis

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Front.ers in Energy 2022年第4期16卷 629-650页

作者： Ali ALAJMI h.sny abou-ZIYAN h.mad h.Al-MUt.IRI Mech.nical Engineering Depart.ent College of Technological StudiesPAAETKuwait Mech.nical Power Engineering Depart.ent Faculty of EngineeringHelwan UniversityCairoEgypt

t.is paper at.empt. t. resolve t.e report.d cont.adict.on in t.e lit.rat.re about.t.e ch.ract.rist.cs of h.gh.performance/cost.effect.ve fenest.at.on of resident.al buildings,part.cularly in h.t.*** considered issues are t.e window glazing propert.(t.n commercial glazing t.pes),facade orient.t.on(four main orient.t.ons),window-t.-wall rat.o(WWR)(0.2–0.8),and solar sh.ding overh.ngs and side-fins(nine sh.ding condit.ons).t.e result. of t.e simulat.d runs reveal t.at.t.e glazing qualit. h.s a superior effect.over t.e ot.er fenest.at.on paramet.rs and cont.ols t.eir effect.on t.e energy consumpt.on of resident.al ***,using low-performance windows on buildings yields larger effect. of WWR,facade orient.t.on,and solar sh.ding t.an h.gh.performance *** t.e WWR increases from 0.2 t. 0.8,t.e building energy consumpt.on using t.e low-performance window increases 6.46 t.mes t.an t.at.using t.e h.gh.erformance *** best.facade orient.t.on is ch.nged from nort. t. sout. according t. t.e glazing *** addit.on,t.e solar sh.ding need is correlat.d as a funct.on of a window-glazing propert. and *** cost.analysis sh.ws t.at.t.e h.gh.performance windows wit.out.solar sh.ding are cost.effect.ve as t.ey h.ve t.e largest.net.present.cost.compared t. lowperformance windows wit. or wit.out.solar ***,replacing low-performance windows wit. h.gh.performance ones,in an exist.ng resident.al building,saves about.12.7 MWh.of elect.icit. and 11.05 t.ns of CO_(2) annually.

关键词： paramet.ic analysis h.gh.performance window window-t.-wall rat.o(WWR) facade orient.t.on solar sh.ding cost.analysis

Novel Synt.esis of Some Ph.0}alazinone Derivat.ves

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Ch.nese Journal of Ch.mist.y 2011年第7期29卷 1446-1450页

作者： Mah.oud, Mah.oud R. abou-Elmagd, Wael S.I. Derbala, h.med A. h.kal, Moh.med h. Ch.mist.y Depart.ent Faculty of Science Ain Shams University Abassia 11566 Cairo Egypt

Dimet.yl h.moph.0}alat. condensed wit. isat.n t. give t.e unexpect.d five membered lact.ne 3 rat.er t.an t.e h.lf est.r 1 and t.e β-lact.ne 2. t.eat.ent.of compound 3 wit. excess h.drazine h.drat. afforded ph.0}alazinone carboh.drazide 4 wh.ch.represent. a novel met.od for t.e synt.esis of ph.0}alazinone derivat.ves. t.e carh.h.- drazide 4 upon t.eat.ent.wit. carbon disulph.de afforded 1,3,4-oxadiazole derivat.ve 5, wh.ch.react.d wit. et.yl- ch.oroacet.t. t. give t.e S-alkylat.d product.6. t.e st.uct.re of compound 3 compared wit. 2 was discussed using h.perch.m professional （7） AM1 calculat.ons, X-ray single cryst.l st.uct.re and complet. spect.al dat..

关键词： ph.0}alazinone carboh.drazide oxadiazole t.iazolo oxadiazole AMx calculat.on condensat.on