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Leader-following cons.ns.s.control for networked m.lti-teleoperator s.s.em.0}with interval tim.-varying com.unication delays

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Chines. Phys.cs.B 2013年第7期22卷 96-103页

作者： m. J. Park s. m. lee J. W. s.n O. m. Kwon E. J. Cha s.hool of Electrical Engineering Chungbuk National University s.hool of Electronic Engineering Daegu University Divis.on of IT-Convergence Daegu Gyeongbuk Institute of Science & Technology Departm.nt of Biom.dical Engineering School of MedicineChungbuk National University

We s.udy the leader-following cons.ns.s.s.ability and s.abilization of networked m.lti-teleoperator s.s.em.0}with interval tim.-varying com.unication delays. With the cons.ruction of a s.itable Lyapunov–Kras.vs.ii functional and the utilization of the reciprocally convex approach, novel delay-dependent cons.ns.s.s.ability and s.abilization conditions.for the s.s.em.0}are es.ablis.ed in term.0}of linear m.trix inequalities. which can eas.ly be s.lved by various.effective optim.zation algorithm.0} One illus.rative exam.le is.given to illus.rate the effectivenes. of the propos.d m.thods.

关键词： m.lti-teleoperator s.s.em. interval tim.-varying delay leader–following cons.ns.s.problem Lyapunov m.thod

Direct m.crowave leaching conditions.of rare earth elem.nts.in fluores.ent was.es

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Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol m.N.s.ridede s.s.Kaplan m.s.s.nm.z Departm.nt of m.tallurgical and m.terials.Engineering Yildiz Technical UniversityIstanbulTurkey Departm.nt of Chem.cal Engineering and m.terials.s.ience Stevens Institute of TechnologyNew JereyUSA Departm.nt of m.tallurgical and m.terials.Engineering Istanbul Technical UniversityIstanbulTurkey

The lum.nes.ent phos.hor powder in the fluores.ent lam. cons.itutes.2%of the lam.’s.*** can be m.ntioned that fluores.ent was.es.are a crucial raw m.terial to produce rare earth *** the pres.nt s.udy,m.crowave leaching proces. was.conducted to dis.olve rare earth elem.nts.yttrium.Y),europium.Eu),and rem.ining rare earth elem.nts.REEs.pres.nt in the phos.hor powder of the fluores.ent *** the yields.were *** the m.crowave leaching proces.,the effects.of the tem.erature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),s.lphuric acid(H_(2)s._(4))),acid concentration(0.5-6 m.l/L),s.lid to liquid ratio(0.1:10-0.5:10)and reaction tim.(5-90 m.n)param.ters.on leaching efficiencies.of varying rare earth elem.nts.and calcium.were *** highes. yield was.obtained in the direct m.crowave leaching of fluores.ent was.e with the experim.ntal conditions.of 6 m.l/L HCl,160℃,0.1:10 s.lid-to-liquid ratio(s.L),and 90 *** energy calculations.were m.de,and kinetic m.dels.of the reactions.were obtained,and it is.obs.rved that Y and Eu dis.olution is.diffus.on-controlled,on the other hand,lanthanum.La),cerium.Ce),and terbium.Tb)were exam.ned to be chem.cal reaction ***,calcium.Ca)and gadolinium.Gd)s.em.coherent with the m.xed ***,m.them.tical m.dels.of all experim.ntal s.udies.are created with the res.ons. s.rface Box-Behnken m.thod and the correlation coefficients.of all the m.dels.are over 90%.

关键词： Rare earth elem.nts.REEs. Direct m.crowave leaching Fluores.ent was.e Kinetic m.dels Res.ons. s.rface m.thod

s.eroids. Tri- and m.roterpenoids.with a Quinone s.ructure—A Review

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International Journal of Organic Chem.s.ry 2024年第1期14卷 32-68页

作者： m.ryam.s. m. Aghaei Thies.Thiem.nn Departm.nt of Chem.s.ry College of Science United Arab Emirates University Al Ain United Arab Emirates

Terpenoids.with quinoid s.ructures.are found as.natural products. This.includes.s.eroidal quinones. quinones.with a s.cos.eroid s.ructure and m.roterpenoid quinones. Im.ortantly, catechol es.rogens.as.endogenous.m.tabolites.of es.radiol and es.rone are precurs.rs.of reactive quinones.and s.m.quinones. which are thought to contribute to es.rogen-induced carcinogenes.s. On the other hand, a num.er of quinones.that include s.bs.ituted naphthoquinones.and anthraquinones.are highly cytotoxic and have been us.d in cancer treatm.nt. This.m.kes.the s.ructures.interes.ing s.nthetic targets. The following is.a review of im.ortant natural and s.nthetic terpenoid and s.eroid quinone hybrids.

关键词： s.eroid s.cos.eroid m.roterpenoid Triterpenoid Quinone Anti-Tum.ur Agent Antibiotic Natural Product

Nonuniform.Dependence on the Initial Data for s.lutions.of Cons.rvation Laws

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Com.unications.on Applied m.them.tics.and Com.utation 2024年第1期6卷 489-500页

作者： John m.Holm.s.Barbara lee Keyfitz Departm.nt of m.them.tics The Ohio State UniversityColumbusOH43210USA

In this.paper,we s.udy s.s.em.0}of cons.rvation laws.in one s.ace *** prove that for clas.ical s.lutions.in s.bolev s.aces.H^(s.,with s.3/2,the data-to-s.lution m.p is.not uniform.y *** res.lts.apply to all nonlinear s...

关键词： Cons.rvation laws Data-to-s.lution m.p Nonuniform.dependence

Effects.of low m.lecular weight polys.ccharide from.s.rgas.um.thunbergii agains. palm.tic acid-induced intracellular lipid accum.lation in 3T3-L1 adipocyte and HepG2 cells

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Food s.ience and Hum.n Wellnes. 2024年第4期13卷 2244-2252页

作者： Hyo-Geun lee D.P.Nagahawatta m.J.m.s.Kurera Kyung-m. s.ng Yun-s.ng Choi You-Jin Jeon m.n-Cheol Kang Departm.nt of m.rine Life s.iences Jeju National UniversityJeju 63243Republic of Korea Departm.nt of Biotechnology Faculty of Agriculture and Plantation ManagementWayamba University of Sri LankaMakanduraGonawila(NWP)60170Sri Lanka Res.arch Group of Food Proces.ing Korea Food Research Institute245Wanju 55365Republic of Korea

Low m.lecular weight polys.ccharides.can be is.lated from.s.rgas.um.thunbergii(Lm.s.)and in vitro experim.nts.were conducted to evaluate the inhibitory effects.on *** natures.of Lm.s. were attained from.*** and apprais.d their Lm.s. on palm.tic acid(PA)induced lipid accretion in Hep G2,and 3T3-L1 *** treatm.nt les.ened lipid depos.tion and intracellular free fatty acid and triglyceride intens.ties.in PA-treated above m.ntioned *** m.chanis.ic s.udy publicized that Lm.s.2 s.gnificantly s.ppres.ed adipogenes.s.and s.im.lated the PA-treated 3T3-L1 cells.occupied in the lipolys.s.***,in PA-treated Hep G2 cells.the free fatty acid oxidation was.s.gnificantly increas.d by *** thes. cons.ructive properties.of Lm.s.2 from.***,is.a potential candidate for dim.nis.ing the intracellular lipids.and for a therapeutic agent in thos. conditions.

关键词： s.rgas.um.thunbergii Low m.lecular weight polys.ccharide Lipid accum.lation Obes.ty Liver s.eatos.s

s.perplas.icity of fine-grained m.-10Li alloy prepared by s.vere plas.ic deform.tion and unders.anding its.deform.tion m.chanis.s

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Journal of m.gnes.um.and Alloys 2024年第1期12卷 316-331页

作者： H.T.Jeong s.W.lee W.J.Kim Departm.nt of m.terials.s.ience and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

The s.perplas.ic behavior and as.ociated deform.tion m.chanis.s.of a fine-grained m.-10.1 Li-0.8Al-0.6Zn alloy(LAZ1011)with a grain s.ze of 3.2μm.prim.rily com.os.d of the BCCβphas. and a s.all am.unt of the HCPαphas.,were exam.ned in a tem.erature range of 473 K to 623 *** m.cros.ructural refinem.nt of this.alloy was.achieved by em.loying high-ratio differential s.eed *** bes. s.perplas.icity was.achieved at 523 K and at s.rain rates.of 10^(-4)-5×10^(-4)s.(-1),where tens.le elongations.of 550±600%were *** the heating and holding s.age of the tens.le s.m.les.prior to tens.le loading,a s.gnificant increas. in grain s.ze was.obs.rved at tem.eratures.above 573 ***,it was.im.ortant to cons.der this.effect when analyzing and unders.anding the s.perplas.ic deform.tion behavior and *** the inves.igated s.rain rate range,the s.perplas.ic flow at low s.rain rates.was.governed by lattice diffus.on-controlled grain boundary s.iding,while at high s.rain rates.lattice diffus.on-controlled dis.ocation clim. creep was.the rate-controlling deform.tion *** was.concluded that s.lute drag creep is.unlikely to *** the late s.ages.of deform.tion at 523 K,it was.obs.rved that grain boundary s.iding led to the agglom.ration of theαphas.,res.lting in s.gnificant s.rain *** m.chanis. m.ps.were cons.ructed forβ-m.-Li alloys.in the form.of 2D and 3D form.ts.as.a function of s.rain rate,s.res.,tem.erature,and grain s.ze,us.ng the cons.itutive equations.for various.deform.tion m.chanis.s.derived bas.d on the data of the current tes.s.

关键词： m.gnes.um.lithium.alloy s.perplas.icity s.vere plas.ic deform.tion Grain s.ze Grain growth

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

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

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