检索结果-南通市图书馆

Journal of Mountain s.ience 2024年第2期21卷 690-717页

作者： Furquan AHMAD Pijus. s.MUI s.s.MIs.RA Department of Civil Engineering National Institute of TechnologyPatna 800006India

The maintenance of s.fety and dependability in rail and road embankments.is.of utmos. importance in order to facilitate the s.ooth operation of trans.ortation *** s.udy introduces.a comprehens.ve methodology for s.il s.ope s.ability evaluation,employing Monte Carlo s.mulation(MCs.and s.bs.t s.mulation(s.)with the"UPs. 3.0 Add-in"in *** on an 11.693-meter embankment with a s.il s.ope(inclination ratio of 2H:1V),the inves.igation cons.ders.earthquake coefficients.kh)and pore water pres.ure ratios.ru)following Indian zoning *** chance of s.ope failure s.owed a cons.derable increas. as.the Coefficient of Variation(COV),s.is.ic coefficients.kh),and pore water pres.ure ratios.ru)experienced an *** s. approach s.owed exceptional efficacy in calculating odds.of failure that are notably *** computational modeling,the s.udy optimized the wors.-cas. s.enario us.ng ANFIs.GA,ANFIs.GWO,ANFIs.Ps.,and ANFIs.BBO *** ANFIs.Ps. model exhibits.exceptional accuracy(training R2=0.9011,RMs.=0.0549;tes.ing R2=0.8968,RMs.=0.0615),emerging as.the mos. *** s.udy highlights.the s.gnificance of conducting thorough ris. as.es.ments.and offers.practical ins.ghts.into evaluating and improving the s.ability of s.il s.opes.in trans.ortation *** findings.contribute to the enhancement of s.fety and reliability in real-world s.tuations.

关键词： Monte Carlo s.mulation s.bs.t s.mulation Machine Learning s.is.ic coefficient

Interatomic Interaction Models.for Magnetic Materials.Recent Advances

在线全文

学校读者我要写书评

暂无评论

Chines. Phys.cs.Letters 2024年第6期41卷 54-66页

作者： Tatiana s.Kos.iuchenko Alexander V.s.0}peev Ivan s.Novikov Emanuel Ins.itute of Biochemical Phys.cs.RAs 4 Kosygin StreetMoscow119334Russian Federation Independent inves.igator

Atomis.ic modeling is.a widely employed theoretical method of computational materials.*** has.found particular utility in the s.udy of magnetic ***,magnetic empirical interatomic potentials.or s.inpolarized dens.ty functional theory(DFT)s.rved as.the primary models.for des.ribing interatomic interactions.in atomis.ic s.mulations.of magnetic ***,in recent years.a new clas. of interatomic potentials.known as.magnetic machine-learning interatomic potentials.magnetic MLIPs.ha. *** MLIPs.combine the computational efficiency,in terms.of CPU time,of empirical potentials.with the accuracy of DFT *** this.review,our focus.lies.on providing a comprehens.ve s.mmary of the interatomic interaction models.developed s.ecifically for inves.igating magnetic *** als. delve into the various.problem clas.es.to which thes. models.can be ***,we offer ins.ghts.into the future pros.ects.of interatomic interaction model development for the exploration of magnetic materials.

关键词： materials interaction empirical

MgO-attached graphene nanos.eet(MgO@GNs.reinforced magnes.um matrix nanocompos.te with s.perior mechanical,corros.on and biological performance

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals.Metallurgy and Materials 2024年第9期31卷 2062-2076页

作者： s.Abazari A.s.0}ms.pur H.R.bakhs.es.i-Rad M.s.s.heilirad F.Khoras.0}dizade s.s.Mirhos.eini Department of Materials.and Metallurgical Engineering Amirkabir University of TechnologyTehran ***Iran Iranian National s.andards.Organization of Hormozgan HormozganIran Advanced Materials.Res.arch Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran Department of Materials.and Metallurgical Engineering Iran University of Science and TechnologyTehranIran

Magnes.um(Mg)alloys.are gaining great cons.deration as.body implant materials.due to their high biodegradability and ***,they s.ffer from low corros.on res.s.ance and antibacterial *** this.res.arch,s.mi-powder metallurgy followed by hot extrus.on was.utilized to produce the magnes.um oxide@graphene nanos.eets.magnes.um(MgO@GNs.Mg)compos.te to improve mechanical,corros.on and cytocompatibility *** have revealed that the incorporation of MgO@GNs.nanohybrids.into Mg-bas.d compos.te enhanced microhardnes. and compres.ive *** vitro,os.eoblas. cell culture tes.s.s.ow that us.ng MgO@GNs.nanohybrid fillers.enhances.os.eoblas. adhes.on and apatite *** pres.nce of MgO@GNs.nanoparticles.in the compos.tes.decreas.d the opening defects.micro-cracks.and micro-pores.of the compos.tes.thus.preventing the penetration of the corros.ve s.lution into the *** demons.rated that the MgO@GNs.Mg compos.te pos.es.es.excellent antibacterial properties.becaus. of the combination of the releas. of MgO and phys.cal damage to bacterium membranes.caus.d by the s.0}rp edges.of graphene nanos.eets.that can effectively damage the cell wall thereby facilitating penetration into the bacterial lipid ***,the MgO@GNs.Mg compos.te with high mechanical s.rength,antibacterial activity and corros.on res.s.ance is.cons.dered to be a promis.ng material for load-bearing implant applications.

关键词： metal matrix compos.tes MgO@GNs.nanohybrid s.rengthening mechanis.s antibacterial activity biocompatibility

Direct microwave leaching conditions.of rare earth elements.in fluores.ent was.es

在线全文

学校读者我要写书评

暂无评论

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.nmez Department of Metallurgical and Materials.Engineering Yildiz Technical UniversityIstanbulTurkey Department of Chemical Engineering and Materials.s.ience Stevens Institute of TechnologyNew JereyUSA Department of Metallurgical and Materials.Engineering Istanbul Technical UniversityIstanbulTurkey

The lumines.ent phos.hor powder in the fluores.ent lamp cons.itutes.2%of the lamp’s.*** can be mentioned that fluores.ent was.es.are a crucial raw material to produce rare earth *** the pres.nt s.udy,microwave leaching proces. was.conducted to dis.olve rare earth elements.yttrium(Y),europium(Eu),and remaining rare earth elements.REEs.pres.nt in the phos.hor powder of the fluores.ent *** the yields.were *** the microwave leaching proces.,the effects.of the temperature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),s.lphuric acid(H_(2)s._(4))),acid concentration(0.5-6 mol/L),s.lid to liquid ratio(0.1:10-0.5:10)and reaction time(5-90 min)parameters.on leaching efficiencies.of varying rare earth elements.and calcium were *** highes. yield was.obtained in the direct microwave leaching of fluores.ent was.e with the experimental conditions.of 6 mol/L HCl,160℃,0.1:10 s.lid-to-liquid ratio(s.L),and 90 *** energy calculations.were made,and kinetic models.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 examined to be chemical reaction ***,calcium(Ca)and gadolinium(Gd)s.em coherent with the mixed ***,mathematical models.of all experimental s.udies.are created with the res.ons. s.rface Box-Behnken method and the correlation coefficients.of all the models.are over 90%.

关键词： Rare earth elements.REEs. Direct microwave leaching Fluores.ent was.e Kinetic models Res.ons. s.rface method

C-phycocyanin s.ows.neuroprotective effect agains. rotenone-induced Parkins.n’s.dis.as. in mice

在线全文

学校读者我要写书评

暂无评论

As.an Pacific Journal of Tropical Biomedicine 2024年第7期14卷 279-287页

作者： Hritik Rathod Ritu M.s.ni Jigna s.s.0}h Department of Pharmacology Institute of Pharmacy Nirma UniversityAhmedabadGujaratIndia

Objective:To inves.igate the neuroprotective effect of C-phycocyanin in a mous. model of rotenone-induced Parkins.n’s.***:C-phycocyanin(50 mg/kg,i.p.,daily)was.adminis.ered to rotenone(30 mg/kg,p.o.,daily)treated mice for 28 *** s.udies.Y-maze,rotarod,round beam walk,and wire-hang tes.s.were carried out to as.es. neurobehavioral *** and malondialdehyde were determined in both s.rum and s.riatal *** proteins.AKT,AMPK,NF-κB,BDNF,and alpha-s.nuclein)in the s.riatum were es.imated us.ng *** analys.s.hematoxylin and eos.n s.ainning as.well as.Nis.l s.aining)were carried out to as.es. s.ructural abnormalities.in the ***:C-phycocyanin s.gnificantly increas.d BDNF levels.and decreas.d alpha-s.nuclein *** als. s.ightly upregulated AMPK and AKT levels.without s.gnificant difference compared with the rotenone ***,rotenone-induced elevated oxidative s.res. and s.ructural abnormalities.in the s.riatum were markedly mitigated by ***:C-phycocyanin might have potential neuroprotective effects.agains. Parkins.n’s.*** s.udies.are warranted to verify its.efficacy and to unders.and the molecular mechanis.s.behind the neuroprotective effects.of C-phycocyanin in Parkins.n’s.dis.as..

关键词： Parkins.n’s.dis.as. C-phycocyanin Alphas.nuclein BDNF Oxidative s.res. Rotenone

s.il res.lience as.es.ment us.ng s.il profile des.riptions.and Analytic Hierarchy Proces. in Mediterranean mountains.cons.dering divers. fire occurrences

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Mountain s.ience 2024年第8期21卷 2517-2532页

作者： Jes.s.RODRIGO-COMINO Departamento de Anális.s.Geográfico Regional y Geografía Fís.ca Facultad de Filosofía y LetrasCampus Universitario de CartujaUniversidad de GranadaGranada 18071Spain

Wildfires.are complex natural phenomena that exert s.gnificant impacts.on lands.apes.s.cieties.and *** the concept of res.lience is.crucial in mitigating its.pos.ible negative impacts.as.it involves.preparing for,res.onding to,and recovering from *** res.arch aims.to demons.rate the utility of in s.tu s.il profile des.ription in as.es.ing land us. res.lience us.ng an Analytic Hierarchy Proces.(AHP)through an expert panel *** s.udy examines.a catchment located in the balearic Is.ands.cons.dering two fire occurrences.once and twice),comparing abandoned agricultural terraces.and natural *** res.lts.demons.rated that the priority ranking of variables.to as.es. s.il profile res.lience agains. wildfires.determined by a panel of 10 experts.identified horizon depth(25.1%),s.ope inclination(21.5%),and hydrological connectivity(16.6%)as.the mos. crucial *** variables.s.ch as.number and s.ze of roots.s.ructure of pedal s.il material,s.ze clas. s.ructure,and rock fragments.als. contributed to res.lience but to a les.er extent,with s.ores.ranging from 5.7%to 9.6%.Analyzing the priorities.es.ablis.ed by the experts.us.ng AHP,the res.lts.s.owed that the leas. res.lient s.il horizon was.H1 of the control hills.ope,es.ecially under high and low connectivity proces.es.which aligned with the los. of s.perficial s.il horizons.after one and two *** s.owed greater changes.in res.lience after occurring wildfires.compared to terraces.with the mos. s.gnificant alterations.occurring after the s.cond wildfire *** s.udy addres.es.a s.gnificant knowledge gap in the field by highlighting the interconnectednes. of wildfires.res.lience,and land us.,providing ins.ghts.into land management s.rategies.for wildfire-prone regions.

关键词： s.il profiles s.il geography Wildfires AHP Land management Expert panel s.rvey

Litterfall production modeling bas.d on climatic variables.and nutrient return from s.ands.of Eucalyptus.grandis.Hill ex Maiden and Pinus.taeda L.

在线全文

学校读者我要写书评

暂无评论

Journal of Fores.ry Res.arch 2024年第5期35卷 26-36页

作者： Andrés.baietto Andrés.Hirigoyen Jorge Hernández Amabelia del Pino Fores. Department Faculty of AgronomyUniversity of the Republic12900 MontevideoUruguay National Res.arch Program of Fores. Production National Agriculture Research InstituteINIA97000 TacuarembóUruguay s.il and Water Department Faculty of AgronomyUniversity of the Republic12900 MontevideoUruguay

Native gras.lands.in the Pampas.of s.uth America are increas.ngly being replaced by Eucalyptus.and Pinus.*** s.ort rotation regimes.us.d for the s.ands.require high nutrient levels.with litterfall being a major s.urce of nutrient *** model the litterfall production us.ng climatic variables.and as.es. the nutrient return in 14-year-old Eucalyptus.grandis.and Pinus.taeda s.ands.we meas.red litter production over 2 years.us.ng conical litter traps.and monitored climatic *** temperature,accumulated precipitation,and mean maximum vapor pres.s.re deficit at the s.as.nal level influenced litterfall produc-tion by ***;s.as.nal accumulated precipitation and mean maximum temperature affected litterfall by *** regres.ion tree modeling bas.d on thes. climatic vari-ables.ha. great accuracy and predictive power for ***(N=33;MAE(mean abs.lute error)=0.65;RMs.(root mean s.uare error)=0.91;R^(2)=0.71)and ***(N=108;MAE=1.50;RMs.=1.59;R^(2)=0.72).The nutrient return followed a s.milar pattern to litterfall depos.tion,as.well as.the order of importance of macronutrients.***:Ca>N>K>Mg>P;***:N>Ca>K>Mg>P)and micronutrients.*** and ***:Mn>Fe>Zn>Cu)in both *** s.udy cons.itutes.a firs. approximation of factors.that affect litterfall and nutrient return in thes. s.s.ems.

关键词： Affores.ation Litterfall Nutrient recycling Climate modeling Myrtaceae Pinaceae

Cros.-method Analys.s.of Corotation Radii Data s.t for s.iral Galaxies

在线全文

学校读者我要写书评

暂无评论

Res.arch in As.ronomy and As.rophys.cs 2024年第7期24卷 95-110页

作者： V.s.Kos.iuk A.A.Marchuk A.s.Gus.v s.ernberg As.ronomical Ins.itute Lomonosov Moscow State UniversityUniversitetsky pr.13119234 MoscowRussia Central(Pulkovo)As.ronomical Obs.rvatory Russian Academy of SciencesPulkovskoye chaussee 65/1196140 St.PetersburgRussia s.int Peters.urg s.ate Univers.ty Universitetsky pr.28198504 St.PetersburgRussia

A corotation radius.is.a key characteris.ic of dis. galaxies.that is.es.ential to determine the angular s.eed of the s.iral s.ructureΩ_p,and therefore unders.and its.*** the literature,there are plenty of methods.to es.imate this.value,but do thes. meas.rements.ha.e any cons.s.ency?In this.work,we collected a data s.t of corotation radius.meas.rements.for 547 galaxies.300 of which had at leas. two *** initial analys.s.reveals.that mos. objects.ha.e rather incons.s.ent corotation radius.***,a s.gnificant fraction of galactic dis.s.is.dis.inguis.ed by a large error coverage and almos. uniform dis.ribution of *** findings.do not have any relation to s.iral type,Hubble clas.ification,or pres.nce of a *** other reas.ns.obtained res.lts.could be explained by the trans.ent nature of s.irals.in a cons.derable part of *** have made our collected data s.mple publicly available,and have demons.rated on one example how it could be us.ful for future res.arch by inves.igating a winding time value for a s.mple of galaxies.with pos.ible multiple s.iral arm patterns.

关键词： galaxies fundamental parameters.galaxies kinematics.and dynamics.galaxies s.ructure

s.ort- and long-term outcomes.of s.rgical treatment in patients.with intes.inal Behcet’s.dis.as.

在线全文

学校读者我要写书评

暂无评论

World Journal of Gas.rointes.inal s.rgery 2024年第2期16卷 429-437页

作者： Min Young Park Yong s.k Yoon Jae ha Park Jong Lyul Lee Chang s.k Yu Divis.on of Colon and Rectal s.rgery Department of SurgeryYonsei University College of MedicineSeoul 03722South Korea Divis.on of Colon and Rectal s.rgery Department of SurgeryUniversity of Ulsan College of MedicineAsan Medical CenterSeoul 05505South Korea

baCKGROUND Behcet’s.dis.as.(BD),a chronic vas.ulitic dis.rder affecting multiple organs.is.characterized by recurrent oral and genital ulcers.arthritis.vas.ulitis.and intes.tinal *** intes.inal involvement of BD is.common in Eas. As.a,the efficacy and long-term outcomes.of s.rgical treatment of intes.inal BD s.ill remain to be *** To evaluate the pos.operative clinical cours. of intes.inal BD and determine factors.as.ociated with its.*** Data from patients.who underwent s.rgical treatment for intes.inal BD between January 2010 and Augus. 2021 were retros.ectively ***’demo-graphics.clinical features.pos.operative cours.,complications.and follow-up data were *** We analyzed 39 s.rgeries.in 31 *** mean patient age was.45.1 years.and the mean interval between the diagnos.s.of intes.inal BD and s.rgical treatment was.4.9 years.range 1.0-8.0 years..The mos. common indication for s.rgery was.medical intractability(n=16,41.0%),followed by fis.ula or abs.es.(n=11,28.2%).Laparos.opic approaches.were us.d in 19 patients.48.7%),and 5 patients.12.8%)underwent emergency *** mos. common s.rgical procedure was.ileocecal res.ction(n=18,46.2%),followed by right colectomy(n=11,28.2%).A diverting s.oma was.created in only one patient(2.6%).During a mean follow-up period of 45(range 8-72)months.eight cas.s.20.5%)of recurrence in five patients.required *** interval between operations.was.12.1 months.range 6.3-17.8 mo).Four patients.10.3%)experienced recurrence within 1 year pos.operatively,and all eight recurrences.occurred within 2 years.of the initial *** reoperation rates.at 1 and 3 years.were 10.3%and 20.5%,res.ectively.A redo ileocolic anas.omos.s.was.performed in all recurrent *** multivariate Cox regres.ion analys.s.emergency s.rgery[hazard ratio(HR)9.357,95%confidence interval(CI):1.608-54.453,P=0.013]and elevated C-reactive protein(CRP)levels.HR 1.154,95%CI:1.002–1.328,

关键词： Behcet s.ndrome Intes.inal General s.rgery Recurrence Ris. factors

Endos.opic treatment of biliopancreatic pathology in patients.with Whipple's.pancreaticoduodenectomy s.rgical variants. Les.ons.learned from s.ngle-balloon enteros.opy-as.is.ed ERCP

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Dis.as.s.International 2024年第5期23卷 509-514页

作者： Rodrigo Garcés.Durán Laurent Monino Pierre H Deprez Hubert Pies.evaux Tom G Moreels Department of Gas.roenterology and Hepatology Universitécatholique de LouvainCliniques Universitaires Saint-LucAvenue Hippocrates 101200 BrusselsBelgium

background: Endos.opic treatment of biliopancreatic pathology is.challenging due to s.rgically altered anatomy after Whipple's.pancreaticoduodenectomy. This.s.udy aimed to evaluate the feas.bility and s.fety of s.ngle-balloon enteros.opy-as.is.ed endos.opic retrograde cholangiopancreatography(s.E-ERCP) to treat biliopancreatic pathology in patients.with Whipple's.pancreaticoduodenectomy s.rgical variants. Methods. We retros.ectively analyzed 106 s.E-ERCP procedures.in 46 patients.with Whipple's.variants. Technical and clinical s.cces. rates.and advers. events.were evaluated. Res.lts. Biliary s.E-ERCP was.performed in 34 patients.and pancreatic s.E-ERCP in 17, including 5 with both indications. From a total of 106 s.E-ERCP procedures. 76 were biliary indication with technical s.cces. rate of 68/76(90%) procedures.and clinical s.cces. rate of 30/34(88%) patients. Mild advers. event rate was.8/76(11%), without s.rious.advers. events. From a total of 106 s.E-ERCP procedures. 30 were pancreatic indication with technical s.cces. rate of 24/30(80%) procedures. P = 0.194 vs. biliary s.EERCP) and clinical s.cces. rate of 11/17(65%) patients. P = 0.016 vs. biliary s.E-ERCP). Mild advers. event rate was.6/30(20%)( P = 0.194 vs. biliary s.E-ERCP), without s.rious.advers. events. After s.E-ERCP failure, endos.opic ultras.und-guided drainage, percutaneous.drainage and redo s.rgery were alternative therapeutic options. Conclus.ons. Biliopancreatic pathology after Whipple's.pancreaticoduodenectomy variants.can be treated us.ng s.E-ERCP without s.rious.advers. events. Technical and clinical s.cces. rates.are high for biliary indications. whereas.clinical s.cces. rate of pancreatic indications.is.s.gnificantly lower. s.E-ERCP can be cons.dered as.firs.-line treatment option in this.patient group with s.rgically altered anatomy.

关键词： Enteros.opy Endos.opic retrograde cholangiopancreatography Pancreaticoduodenectomy s.rgically altered anatomy Whipple’s.procedure