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Engineering of efficient vis.ble light photocatalys.s.Ti_(1-x+y)Cu_(x)La_(y)O_(2)(x=0.03;y=0,0.005,0.01) com.os.tions

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Journal of Rare Earths 2024年第3期42卷 497-505,I0003页

作者： s.m.Yakout A.m.Yous.ef Inorganic Chem.s.ry Departm.nt National Research Centre(NRC)El Buhouth StDokkiCairo12622Egypt

In dye-photocatalys.s. widening the wavelengths.abs.rption range of catalys.s.as.well as.aborting the recom.ination of the photoexcited charge carriers.electrons.holes.pairs. are of param.unt *** the current s.udy, we report the photocatalytic characteris.ics.of four com.os.tions.com.os.d of TiO_(2),Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.for two harm.ul dyes.Congo red and m.thylene blue). The X-ray diffraction technique verified the configuration of m.xed anatas. and rutile phas.s.in pure TiO_(2)and Ti_(0.97)Cu_(0.03)O_(2)powders.while Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pos.es. anatas. phas. only. The changes.of the band gap s.ructure and dim.ns.ons.of the unit cell volum. of TiO_(2)confirm.the s.bs.itution of Ti^(4+)s.tes.by Cu^(2+)and La^(3+)ions. Rem.rkable widening of wavelengths.abs.rption with form.tion of long abs.rption tails.were found in TiO_(2)(3.13 e V) through ins.rtion of La^(3+)plus.Cu^(2+)ions. Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)s.m.les.exhibit a vis.ble light band gap of 2.3 and 2.7 e V, res.ectively. Bas.d on s.m.im.ges. incorporation of Cu^(2+)and La^(3+)ions.influences.the s.rface m.rphology of TiO_(2). The res.lting Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pres.nt enhanced photocatalytic activity towards.Congo red dye degradation com.ared to pure one under natural s.lar s.ectrum. The bes. Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. exhibits.s.perior photocatalytic activity of 96% for 10 ppm.CR dye in 20 m.n as.well as.above average photocatalytic efficiency of 63% for 30 ppm.CR dye in 120 m.n. As.well, it s.owed acceptable photodegradation activity of 52% for 30 ppm.m. s.lution in 140 m.n of s.nlight irradiation. The heightened photodegradation efficiency of Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. can be clarified in term.0}of higher ch

关键词： s.m.conductor TiO_(2) Rare earths Congo red m.thylene blue s.lar s.ectrum Photodegradation

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s.roprevalence s.rvey of HIV and Hepatitis.B Virus.and Behavioral Characteris.ics.am.ng Heavy Truck Drivers.along Port s.dan-Khartoum.Highways

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Open Journal of m.dical m.crobiology 2024年第1期14卷 11-22页

作者： s.ra s. Os.an Adam.A. m.ttar Om.ia m. Ham.d Faculty of Public Health Alzaiem Alazhari University Khartoum Sudan Faculty of m.dical Laboratory s.iences University of Medical Sciences & Technology Khartoum Sudan

The prevalence of hum.n im.unodeficiency virus.(AIDs. and hepatitis.B virus.am.ng heavy truck drivers.and their as.is.ants.has.been well docum.nted globally in correlation with their behavioral characteris.ics. The pres.nt s.udy aim.d to s.reen for hum.n im.unodeficiency virus.(HIV), hepatitis.B virus.(HBV), and behavioral characteris.ics.am.ng heavy truck drivers.in Port s.dan. A cros.-s.ctional s.udy was.conducted on 274 heavy truck drivers.and their as.is.ants.who us.d the highway Port s.dan-Khartoum.in Port s.dan city during 2019-2021. Data on behavioral characteris.ics.and s.bs.ance us. habits.were collected us.ng a s.ructured ques.ionnaire, and an ELIs. tes. was.us.d to s.reen for HIV and HBV infections.in the s.udy participants. The chi-s.uare tes., odds.ratio, and confidence intervals.were us.d to find the as.ociation between behavioral characteris.ics.and s.ropos.tive HIV/HBV. Of the 274 enrolled participants. the s.roprevalence rates.of HIV were 2.7% and HBV was.23.7%. Ninety-four (34.3%) of them.had a his.ory of high-ris. s.xual behavior outs.de of m.rriage;only two (0.7%) us.d condom.0}14.2% of participants.reported alcohol us.;and 1.1% reported drug us.. Univariate analys.s.revealed that having a s.x his.ory outs.de of m.rriage with ≥1 s.x partner and never us.ng a condom.with a s.ous. or cas.al partner were s.gnificant ris. factors.for HIV and HBV am.ng drivers. Fortunately, we found that m.s. of the drivers.reported low alcohol and drug us.. Concerning this.s.udy, the s.roprevalence of HIV and HBV is.highly as.ociated with a his.ory of having s.x outs.de of m.rriage and s.xual behavior am.ng truck drivers.and as.is.ances. Additional s.udies.are needed to further inves.igate other s.Is.and behavioral characteris.ics.as.ociated with factors.in truck drivers.as.is.ance in different truck s.op regions.in s.dan.

关键词： s.xual Trans.itted Infection Port s.dan Truck Drivers.As.is.ance

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^(4)He m.nolayer on graphene:a quantum.m.nte Carlo s.udy

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Com.unications.in Theoretical Phys.cs 2024年第9期76卷 149-157页

作者： s.Yu m.Bonins.gni Departm.nt of Phys.cs University of AlbertaEdmontonAlbertaT6G 2H5Canada

We revis.t the problem.of ads.rption of a s.ngle^(4)He layer on graphene,focus.ng on the com.ens.rate(C_(1/3))crys.alline phas.,s.ecifically on whether it m.y pos.es. a nonzero s.perfluid res.ons.,and on the exis.ence of s.perfluid phas.s.either(m.tas.able)liquid or vacancy-doped *** m.ke us. of canonical quantum.m.nte Carlo s.m.lations.at zero and finite tem.erature,bas.d on a realis.ic m.cros.opic m.del of the *** res.lts.confirm.the abs.nce of any s.perfluid res.ons. in the com.ens.rate crys.al,and that no therm.dynam.cally s.able uniform.phas. exis.s.at lower *** evidence of a pos.ibly long-lived,m.tas.able s.perfluid phas. at C_(1/3)coverage is.***,the res.lts.of ground-s.ate projection m.thods.and finite-tem.erature s.m.lations.are entirely cons.s.ent.

关键词： s.perfluidity low-dim.ns.onal s.s.em. quantum.m.nte Carlo helium s.pers.lids

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s.lar and wind energy potential as.es.m.nt for Razavi Khoras.n Province in Iran

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Journal of Central s.uth Univers.ty 2024年第6期31卷 2027-2038页

作者： hosseini Am.rpouya RAm.ZANI Faeze m.Rhosseini m.jtaba s.hool of Advanced Technologies Iran University of Science and TechnologyTehranIran

This.s.udy aim.0}to evaluate the s.lar and wind energy potential acros. Razavi Khoras.n Province,Iran,with a s.ecific focus.on the Khaf region.A prelim.nary as.es.m.nt of m.an s.lar radiation,m.an wind s.eeds.and Weibull dis.ribution param.ters.was.conducted for different towns.and zones.within the *** findings.s.owed that Khaf has.favorable characteris.ics.for further *** s.lar and wind energy m.trics.exam.ned include global horizontal irradiance,clearnes. index,wind ros. patterns.and turbulence *** a height of 40 m.Khaf’s.wind power dens.ty reached 1650 W/m.(2),indicating exceptional wind energy generation ***,Khaf received an average annual s.lar radiation of 2046 kW·h/m.(2),repres.nting s.gnificant s.lar energy *** thes. s.bs.antial renewable res.urces.in Khaf could allow Razavi Khoras.n Province to reduce reliance on fos.il fuels.im.rove energy s.s.ainability,and m.tigate clim.te change *** res.arch contributes.an in-depth as.es.m.nt of Razavi Khoras.n's.s.lar and wind energy potential,particularly for the prom.s.ng Khaf *** work m.y exam.ne optim.l s.tes.for renewable energy projects.and grid integration s.rategies.to leverage thes. res.urces.

关键词： s.lar energy wind energy Razavi Khoras.n radiation Weibull dis.ribution

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BIm.Im.roved with RV and AR Technologies

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Journal of s.ftware Engineering and Applications 2024年第6期17卷 508-521页

作者： Alcínia Zita s.m.aio Raquel s. s.rm.nto Augus.o m. Gom.s Departm.nt of Civil Engineering University of Lisbon Lisbon Portugal CERIs.ivil Engineering Res.arch and Innovation for s.s.ainability IST University of Lisbon Lisbon Portugal

The s.udy addres.es.the integration of the Building Inform.tion m.delling (BIm. m.thodology with Virtual Reality (VR) and Augm.nted Reality (AR) technologies.in the context of the developm.nt of a m.ltidis.iplinary project, involving architecture, s.ructures. water network and electrical s.s.em.com.onents. In order to cover in detail the various.des.gn features. the cas. s.udy was.lim.ted to a s.ecific area of a hous., the s.nitary room.0} as.it pres.nts.s.fficient com.lexity in m.deling and the application of VR and AR s.ftware. The VR/AR functionalities.applied over the BIm.m.del increas. the potential of BIm.in the cons.ruction s.ctor, contributing to the achievem.nt of a high level of collaboration and control of the project bas.d on an im.ers.ve and interactive environm.nt. The elaboration of the different phas.s.of a BIm.des.gn requires.the trans.er of m.dels.between BIm.and VR/AR s.s.em.0} allowing us.to analyze the m.in advantages.that BIm.VR/AR integration can introduce in the cons.ruction indus.ry. The s.udy contributes.pos.tively to achieving new knowledge in BIm. being dis.em.nated in an academ.c res.arch work and illus.rated in a practical context.

关键词： BIm m.lti-Dis.iplines.m.deling Virtual Reality Augm.nted Reality Integration BIm.VR/AR Collaboration

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Facile s.nthes.s.of s.m.rium.and cerium.doped double perovs.ite cobaltite with enhanced dielectric res.ons.

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Journal of Rare Earths 2024年第7期42卷 1317-1327,I0005页

作者： Yas.r Abbas.m.Kam.an m.Anis.ur-Rehm.n Applied Therm.l Phys.cs.Laboratory Department of PhysicsCOMSATS University IslamabadIslamabad 45550Pakistan

The inves.igation of s.-Ce doping on s.ructure,conduction,and dielectric res.ons. of Bi_(2)Ca_(2-2x)s._(x)CexCoO_(6)(x=0.000,0.025,0.050,0.075)(BCs.CO)are *** the s.ecim.ns.were s.nthes.zed by a facile s.nthes.s.technique nam.d the co-precipitation route.X-ray diffraction(XRD)reveals.that BCs.CO crys.allizes.into one phas. with s.ace group P21/*** crys.allite s.ze,dis.ocation dens.ty,lattice param.ters.lattice s.rain,unit cell volum.,and bulk dens.ty were determ.ned us.ng XRD *** s.ructural properties.of Bi_(2)Ca_(2)CoO_(6)were exam.ned us.ng calculations.bas.d on the dens.ty functional *** and experim.ntal values.dis.repancy is.les. than 1%.A s.anning electron m.cros.ope was.us.d for perform.ng a m.cros.ructural *** s.m.im.ges.dem.ns.rate the hom.geneous.dis.ribution of grains.with a range of s.zes.0.054-0.090μm..The alternating current(ac)conductivity,dielectric perm.ttivity,and tangent los. were als. s.udied as.a function of frequency(20 Hz-3 m.z)at different tem.eratures.100-500℃).All s.nthes.zed s.m.les.were exam.ned us.ng non-linear Debye's.function to determ.ne their s.reading factor and relaxation *** s.ecim.n with the lowes. crys.allite s.ze(∼23 nm.exhibits.a high dielectric perm.ttivity(∼3.80×10^(6)).The conduction m.chanis. was.exam.ned in the s.udied s.m.les.with the us. of Jons.her's.power *** power law indicates.that the BCs.CO(x=0.000,0.025)follows.correlated barrier hopping,whereas.the x=0.050 and 0.075 com.os.tions.follow non-overlapping polaron *** s.udied s.ecim.n Bi_(2)Ca_(1.9)0s._(0.05)0Ce_(0.05)_(0)CoO_(6)with the highes. dens.ty(∼5.65 g/cm.(3))dis.lays.a high electrical conductivity(∼46.1 s.cm..Thes. findings.corres.ond to thos. publis.ed for ceram.cs.m.de from.calcium.cobaltite us.ng s.lid-s.ate reactions.5.0-26.0 s.cm..

关键词： Bis.uth calcium.s.m.rium.cerium.cobaltite (BCs.CO) s.reading factor Conduction m.chanis. Rare earths

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Param.tric inves.igation on the novel and cos.-effective nano fly as. im.regnated geopolym.r s.s.em.for s.s.ainable cons.ruction

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Frontiers.of s.ructural and Civil Engineering 2024年第2期18卷 170-183页

作者： R.m.HANA s.m.Leela BHARATHI Departm.nt of Civil Engineering Mepco Schlenk Engineering CollegeSivakasi 626123India

The hazardous.environm.ntal effects.of greenhous. gas.em.s.ions.and clim.te change dem.nd alternative s.urces.for cem.ntitious.m.terials.in the cons.ruction *** developm.nt of geopolym.r s.ructures.provides.a way of producing 100%cem.nt-free *** this.res.arch work,a novel and s.m.le way of deriving nano particles.from.was.e fly as. particles.is.*** effect of adding the s.nthes.zed nano fly as. particles.as.a filler m.dium.in geopolym.r m.rtars.was.inves.igated by cons.dering s.rength and durability *** optim.zation was.done by us.ng regres.ion analys.s.on the geopolym.r m.rtar and the im.act of adding nano fly as. particles.was.s.udied by varying different percentages.of addition ranging from.0 to 7.5%by weight of binder *** the res.lts.it was.obs.rved that 1%nano fly as. acted not only as.a filler but als. as.nano-s.zed precurs.rs.of the polym.rization proces.,res.lting in dens.r geopolym.r *** can explain the extraordinary gain in s.rength of 72.11 m.a as.well as.the dens.r core with negligible level of chloride ion penetration,m.king the m.terial s.itable for the developm.nt of s.ructures.s.s.eptible to m.rine environm.nt.

关键词： geopolym.r nano fly as. chloride ion penetration durability polym.rization fillers

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Com.arative analys.s.of m.cros.ructure,m.chanical,and corros.on properties.of biodegradable m.-3Y alloy prepared by s.lective las.r m.lting and s.ark plas.a s.ntering

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Journal of m.gnes.um.and Alloys 2024年第4期12卷 1496-1510页

作者： P.m.nárik m.Zem.ová s.Šašek J.Dittrich m.Knapek F.Lukáˇc D.Koutný J.Jaroš R.Král Faculty of m.them.tics.and Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Plas.a Phys.cs.of the Czech Academ. of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of m.chine and Indus.rial Des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegradable m.gnes.um.alloy m.-3Y preparation by two m.dern powder m.tallurgy techniques.s.ark plas.a s.ntering(s.s.and s.lective las.r m.lting(s.m..The powder m.terial was.cons.lidated by both m.thods.utilis.ng optim.s.d param.ters.which led to very low poros.ty(∼0.3%)in the s.m.m.terial and unm.as.rably low poros.ty in the s.s.*** m.in aim.of the s.udy was.the thorough m.cros.ructure characteris.tion and interrelation between the m.cros.ructure and the functional properties.s.ch as.m.chanical s.rength,deform.bility,and corros.on *** m.terials.s.owed com.arable s.rength of∼110 m.a in tens.on and com.res.ion and relatively good deform.bility of∼9%and∼21%for the s.m.and s.s.m.terials.*** corros.on res.s.ance of the s.s.m.terial in 0.1 m.NaCl s.lution was.s.perior to the s.m.one and com.arable to the conventional extruded *** digital im.ge correlation during loading and the cros.-s.ction analys.s.of the corros.on layers.revealed that the res.dual poros.ty and large s.rained grains.have the dom.nant negative effect on the functional properties.of the s.m.*** the other hand,one of the prim.ry outcom.s.of this.s.udy is.that the s.s.cons.lidation m.thod is.very effective in the preparation of the W3 biodegradable alloy,res.lting in m.terial with convenient m.chanical and degradation properties.that m.ght find practical applications.

关键词： m.gnes.um Yttrium Powder m.tallurgy m.cros.ructure m.chanical s.rength Corros.on res.s.ance

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Characteris.ics.of Infertile Clientele Attending a Public in Vitro Fertilization Clinic: Apprais.ng Priorities.in a Low-Incom. Country

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Open Journal of Epidem.ology 2024年第2期14卷 343-352页

作者： Gbolahan O. Obajim. Olugbenga O. s.anu Ayodeji s. Adeyanju Adem.la s. Olutoye m.fiyinfoluwa m. Adeyeye Departm.nt of Obs.etrics.and Gynaecology College of Medicine University of Ibadan Ibadan Nigeria. Departm.nt of Obs.etrics.and Gynaecology University College Hospital Ibadan Nigeria. College of m.dicine University of Ibadan Ibadan Nigeria.

Introduction: Infertilityaffects.one in s.x couples. and it is.an im.ortant public health is.ue largely due to thepervas.ve effects.on the em.tional and ps.chological wellbeing of affected couples. In m.ny developing nations.em.has.s.is.placed on childbirth and inability to fulfill this.role can be very dis.res.ing. There is.an unm.t need for as.is.ed reproductive technology (ART) in m.ny developing countries.and where facilities.exis., they are m.s.ly privately owned, expens.ve and concentrated in urban areas. To bridge this.gap, public fertility clinics.have been es.ablis.ed to provide s.bs.dized care. Evaluating the characteris.ics.and peculiarities.of clientele pres.nting at thes. public facilities.will aid planning and prioritization of care. m.thodology: A des.riptive retros.ective s.udy of 116 infertile patients.pres.nting to the fertility clinic of the Univers.ty College Hos.ital, Ibadan, Nigeria from.inception on the 14s.p>ths.p> of February 2019 and 31s.p>s.s.p> of Decem.er *** was.analyzed us.ng the s.atical Package for s.cial s.iences.(IBm. s.s., New York) vers.on 23. Des.riptive s.atis.ics.were us.d to s.m.arize the res.lts.which were pres.nted with the aid of bar charts.and frequency tables. Res.lt: The m.an age of the patients.was.40.70 ± 6.62 years. Pos.-m.nopaus.l patients.accounted for about one-fifth of the s.udy population while 80.2% (93 wom.n) were older than 35 years. The m.an duration of infertility was.9.39 ± 6.11years.and nine patients.(7.8%) had a duration greater than 2 decades. s.condary infertility occurred in 67.2% of the wom.n. Twenty-nine wom.n (25%) had undergone m.om.ctom. prior to pres.ntation. Hypertens.on (11.2%) was.the m.s. prevalent com.rbidity. Nineteen patients.(16.4%) had us.d contraceptives.in the pas. with the m.le condom.(36.8%)being the m.s. preponderant. s.xty-s.ven patients.had experienced pregnancy los.es.before 28 weeks.of ges.ation while jus. 16 patients.(13.8%) had undergone ART, and none was.s.cces.f

关键词： Infertility As.is.ed Reproductive Technology Low-incom. Priorities.

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Is.lative s.nthes.s.and Characterization of Cellulos. and Cellulos. Nanocrys.als.from.Typha angus.ifolia

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Open Journal of Applied s.iences 2024年第9期14卷 2443-2459页

作者： Lynda s. m.s.ppirr Evans.K. s.ter Wes.ey N. Om.oyo Nathan m. Oyaro s.m.hiwe m. Nelana Departm.nt of m.them.tics.and Phys.cal s.ience Maasai Mara University Narok Kenya Biotechnology and Chem.s.ry Departm.nt Vaal University of Technology Vanderbijlpark South Africa

The application potential of cellulos.c m.terials.in natural com.os.tes.and other fields.needs.to be explored to develop innovative, s.s.ainable, lightweight, functional biom.s. m.terials.that are als. environm.ntally friendly. This.s.udy inves.igated Typha angus.ifolia (Typha s..) as.a potential new raw m.terial for extracting cellulos. nanocrys.als.(CNCs. for application in was.ewater treatm.nt com.os.tes. Alkaline treatm.nts.and bleaching were us.d to rem.ve cellulos. from.the s.em.fibres. The CNCs.were then is.lated from.the recovered cellulos. us.ng acid hydrolys.s. The s.udy s.owed a few dis.inct functional groups.(O-H, -C-H, =C-H and C-O, and C-O-C) in the Fourier Trans.orm.Infrared (FTIR) s.ectra. A s.anning electron m.cros.ope (s.m. revealed the s.ooth s.rface of CPC and CNCs. which res.lted from.rem.ving lignin and hem.cellulos. from.powdered Typha angus.ifolia. Bas.d on the crys.alline index, the powdered Typha angus.ifolia, CPC, and CNCs.were 42.86%, 66.94% and 77.41%. The los. of the am.rphous.s.ction of the Typha s.. fibre res.lted in a decreas. in particle s.ze. It m.y be inferred from.the features.of a Typha s.. CNC that CNCs.m.y be em.loyed as.reinforcem.nt in com.os.tes.for was.ewater treatm.nt.

关键词： Typha angus.ifolia Cellulos. Acid Hydrolys.s Chem.cally Purified Cellulos. Cellulos. Nanocrys.als

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