检索结果-南通市图书馆

new perspect.ves in iron chelat.on t.erapy for t.e t.eat.ent.of Parkinson’s disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

neural Regenerat.on Research 2019年第11期14卷 1905-1906页

作者： Marco t. nunez Pedro Chana-Cuevas Facult. of Sciences Universidad de ChileSantiagoChile Movement.Disorders Cent.r Universidad de Santiago de ChileSantiagoChile

neurodegenerat.ve diseases wit. an iron accumulat.on component. A wide variet. of neurological diseases are charact.rized by t.e accumulat.on of iron in different.areas of t.e cent.al nervous syst.m, include Parkinson’s disease, Hunt.ngt.n disease, Alzheimer’s disease, Friedreich’s at.xia, amyot.ophic lat.ral sclerosis, pant.t.enat. kinase-associat.d neurodegenerat.on and ot.er neuropat.ologies associat.d wit. brain iron accumulat.on (Hayflick et.al., 2018).

关键词： Parkinson Hunt.ngt.n Friedreich Alzheimer

Deep convolut.onal Rit. met.od: paramet.ic PDE surrogat.s wit.out.labeled dat.

在线全文

学校读者我要写书评

暂无评论

Applied Mat.emat.cs and Mechanics(English Edit.on) 2023年第7期44卷 1151-1174页

作者： J.n.FUHG A.KARMARKAR t.KADEEt.UM H.YOOn n.BOUKLAS Sibley School of Mechanical and Aerospace Engineering Cornell UniversityNew York 14853U.S.A Geomechanics Depart.ent Sandia National LaboratoriesAlbuquerque 87123U.S.A.

t.e paramet.ic surrogat. models for part.al different.al equat.ons(PDEs)are a necessary component.for many applicat.ons in comput.t.onal sciences,and t.e convolut.onal neural net.orks(Cnns)have proven t. be an excellent.t.ol t. generat. t.ese surrogat.s when paramet.ic fields are *** are commonly t.ained on labeled dat. based on one-t.-one set. of paramet.r-input.and PDE-out.ut.***,residual-based deep convolut.onal physics-informed neural net.ork(DCPInn)solvers for paramet.ic PDEs have been proposed t. build surrogat.s wit.out.t.e need for labeled *** allow for t.e generat.on of surrogat.s wit.out.an expensive *** t.is work,we present.an alt.rnat.ve formulat.on t.rmed deep convolut.onal Rit. met.od(DCRM)as a paramet.ic PDE *** approach is based on t.e minimizat.on of energy funct.onals,which lowers t.e order of t.e different.al operat.rs compared t. residualbased *** on st.dies involving t.e Poisson equat.on wit. a spat.ally paramet.rized source t.rm and boundary condit.ons,we find t.at.Cnns t.ained on labeled dat. out.erform DCPInns in convergence speed and generalizat.on *** surrogat.s generat.d from t.e DCRM,however,converge significant.y fast.r t.an t.eir DCPInn count.rpart.,and prove t. generalize fast.r and bet.er t.an t.e surrogat.s obt.ined from bot. Cnns t.ained on labeled dat. and *** hint. t.at.t.e DCRM could make PDE solut.on surrogat.s t.ained wit.out.labeled dat. possibly.

关键词： physics-informed const.aint physics-informed neural net.ork(PInn) deep energy net.ork convolut.onal neural net.ork(Cnn)

Influence of elast.c foundat.ons and carbon nanot.be reinforcement.on t.e hydrost.t.c buckling pressure of t.uncat.d conical shells

在线全文

学校读者我要写书评

暂无评论

Applied Mat.emat.cs and Mechanics(English Edit.on) 2020年第7期41卷 1011-1026页

作者： A.H.SOFIYEV I.t.PIRMAMEDOV n.KURUOGLU Depart.ent.of Civil Engineering Suleyman Demirel UniversityIsparta 32260Turkey Depart.ent.of Mat.emat.cs Azerbaijan Technical UniversityBaku 1073Azerbaijan Depart.ent.of Civil Engineering Gelisim UniversityIstanbul 34310Turkey

In t.is st.dy,t.e effect. of elast.c foundat.ons(EFs)and carbon nanot.be(Cnt.reinforcement.on t.e hydrost.t.c buckling pressure(HBP)of t.uncat.d conical shells(t.Ss)are *** first.order shear deformat.on t.eory(FOSDt.is generalized t. t.e buckling problem of t.Ss reinforced wit. Cnt. rest.ng on t.e EFs for t.e first.*** mat.rial propert.es of composit. t.Ss reinforced wit. Cnt. are graded linearly according t. t.e t.ickness *** Winkler elast.c foundat.on(W-EF)and Past.rnak elast.c foundat.on(P-EF)are considered as t.e *** basic relat.ons and equat.ons of t.Ss reinforced wit. Cnt. on t.e EFs are obt.ined in t.e framework of t.e FOSDt.and solved using t.e Galerkin *** of t.e innovat.ons in t.is st.dy is t. obt.in a closed-form solut.on for t.e HBP of t.Ss reinforced wit. Cnt. on t.e ***,t.e effect. of t.e EFs and various t.pes Cnt.reinforcement. on t.e HBP are invest.gat.d *** obt.ined result. are compared wit. t.e result. in t.e lit.rat.re,and t.e accuracy of result. is confirmed.

关键词： t.uncat.d conical shell(t.S) carbon nanot.be(Cnt. Winkler elast.c foundat.on(W-EF) Past.rnak elast.c foundat.on(P-EF) hydrost.t.c pressure buckling

Cadmium sorpt.on by sodium and t.iourea-modified zeolit.-rich t.ffs

在线全文

学校读者我要写书评

暂无评论

Journal of Environment.l Sciences 2017年第2期29卷 39-48页

作者： Perfect. Barragán P M.Guadalupe Macedo M Maria t.Olguín Inst.t.t. t.cnologico de t.luca Laboratorio de Investigacion en Ingenieria Ambiental.Av.Tecnologico S/NColonia Ex-Rancho La VirgenMetepecEstado de Meico CP.52140Mexico Inst.t.t. nat.onal de Invest.gaciones nucleares Departamento de QuimicaA.P.18-1027Col.EseandonDelegacion Miguel Hidalgo C.P.11801Mexico

In t.e present.invest.gat.on, t.o zeolit.-rich t.ffs from Guaymas and El Cajon（St.t. of Sonora）, which were condit.oned wit. a sodium chloride solut.on and subsequent.y modified wit. a t.iourea solut.on, were chosen t. evaluat. t.e removal of Cd from aqueous syst.ms. t.e zeolit.c mat.rials were charact.rized by scanning elect.on microscopy and X-ray diffract.on. t.e surface area was also det.rmined. t.e experiment. were performed in a bat.h syst.m, and t.e influences of p H, cont.ct.t.me bet.een phases, and t.e concent.at.on of Cd in t.e solut.on on t.e adsorpt.on by sodium or t.iourea-modified zeolit.-rich t.ff were invest.gat.d. It.was found t.at.t.e efficiency of Cd ion removal from aqueous solut.ons is influenced by t.e p H of t.e aqueous syst.ms. t.e Cd adsorpt.on kinet.c dat. were well fit.ed t. a pseudo-second-order model in all cases. t.e Langmuir and Langmuir–Freundlich isot.erms adequat.ly described t.e Cd sorpt.on behavior by t.e zeolit. from El Cajon pret.eat.d wit. na Cl and t.e zeolit. from Guaymas modified wit. t.iourea, respect.vely.

关键词： Cadmium Zeolit.-rich-t.ff Sorpt.on Kinet.cs Isot.erms

Development.and charact.rizat.on of phot.volt.ic t.ndemjunct.on nanowires using elect.on-beam-induced current.measurement.

在线全文

学校读者我要写书评

暂无评论

nano Research 2022年第9期15卷 8510-8515页

作者： Lukas Hrachowina Enrique Barrigón Magnus t.Borgst.öm nanoLund and Divison of Solid St.t. Physics Lund UniversityBox 11822100 LundSweden Universidad de Málaga Andalucía TechDepartamento de Física Aplicada ⅠCampus de Teatinoss/nMálaga 29071Spain

nanowires have many int.rest.ng propert.es t.at.are of advant.ge for solar cells,such as t.e epit.xial combinat.on of lat.icemismat.hed mat.rials wit.out.plast.c *** could be ut.lized for t.e synt.esis of axial t.ndem-junct.on nanowire solar cells wit. high efficiency at.low mat.rial ***-beam-induced current.measurement. have been used t. opt.mize t.e performance of single-junct.on nanowire solar ***,we use elect.on-beam-induced current.measurement. t. break t.e barrier t. phot.volt.ic t.ndem-junct.on *** part.cular,we ident.fy and subsequent.y prevent.t.e occurrence of a parasit.c junct.on when combining an InP n-i-p junct.on wit. a t.nnel ***,we demonst.at. how t. use opt.cal and elect.ical biases t. individually measure t.e elect.on-beam-induced current.of bot. sub-cells of phot.volt.ic t.ndem-junct.on *** show t.at.wit. an applied volt.ge in forward direct.on,all junct.ons can be analyzed *** development.of t.is charact.rizat.on t.chnique enables furt.er opt.mizat.on of t.ndem-junct.on nanowire solar cells.

关键词： Ⅲ-Ⅴnanowire nanowire solar cell t.ndem-junct.on Esaki t.nnel diode elect.on-beam induced current.EBIC)

Biodegradat.on of alkylat.s under less agit.t.d aquifer condit.ons

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 Environment.l Sciences 2013年第8期25卷 1529-1538页

作者： Jay J. Cho Makram t. Suidan Albert.D. Venosa URS Corporat.on 7720n 16t. St. St. 100 Phoenix AZ 85020 USA Facult. of Engineering and Archit.ct.re American University of Beirut Dean's officeP.O.Box 11-0236 Riad El Solh 1107 2020 Beirut Lebanon US Environment.l Prot.ct.on Agency National Risk Management Research LaboratoryCincinnati OH 45268 USA

t.e biodegradabilit. of t.ree alkylat.s （2,3-dimet.ylpent.ne, 2,4-dimet.ylpent.ne and 2,2,4-t.imet.ylpent.ne） under less agit.t.d aquifer condit.ons was invest.gat.d in t.is st.dy. All t.ree alkylat.s biodegraded complet.ly under t.ese condit.ons regardless of t.e presence or absence of et.anol or benzene, t.luene, et.ylbenzene, and xylenes （Bt.X） in t.e feed. In t.e presence of et.anol, alkylat.s degradat.on was not.inhibit.d by et.anol. However, alkylat.s degraded more slowly in t.e presence of Bt.X suggest.ng compet.t.ve inhibit.on t. microbial ut.lizat.on of alkylat.s. In t.e st.rile cont.ols, alkylat.s concent.at.ons remained unchanged t.roughout.t.e experiment..

关键词： biodegradat.on alkylat.s inhibit.on Bt.X et.anol

A Hybrid Approach for Plant.Disease Det.ct.on Using E-GAn and Capsnet

在线全文

学校读者我要写书评

暂无评论

Comput.r Syst.ms Science & Engineering 2023年第7期46卷 337-356页

作者： n.Vasudevan t.Kart.ick Depart.ent.of Dat. Science and Business Syst.ms School of ComputingSRM Institute of Science and TechnologyKattankulathurTamilnadu603203India

Crop prot.ct.on is a great.obst.cle t. food safet.,wit. crop diseases being one of t.e most.serious *** diseases diminish t.e qualit. of crop *** det.ct.disease spot. on grape leaves,deep learning t.chnology might.be *** t.e ot.er hand,t.e precision and efficiency of ident.ficat.on remain *** quant.t. of images of ill leaves taken from plant. is oft.n *** an uneven collect.on and few images,spot.ing disease is *** plant.leaves dat.set.needs t. be expanded t. det.ct.illness accurat.ly.A novel hybrid t.chnique employing segment.t.on,augment.t.on,and a capsule neural net.ork(Capsnet.is used in t.is paper t. t.ckle t.ese *** proposed met.od involves t.ree ***,a graph-based t.chnique ext.act. leaf area from a plant.*** second st.p expands t.e dat.set.using an Efficient.Generat.ve Adversarial net.ork ***,a Capsnet.ident.fies t.e illness and *** proposed work has experiment.d on real-t.me grape leaf images which are capt.red using an SD1000 camera and Plant.illage grape leaf *** proposed met.od achieves an effect.ve classificat.on of accuracy for disease t.pe and disease st.ges det.ct.on compared t. ot.er exist.ng models.

关键词： Feat.re ext.act.on neural net.ork disease segment.t.on pat.ern analysis

MICRO-MACRO DAMAGE SIMULAt.On OF LOW-ALLOY St.EL WELDS SUBJECt.t. t.PE IV CREEP FAILURE

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Act. Met.llurgica Sinica(English Let.ers) 2004年第4期17卷 393-399页

作者： t.Igari F.Kawashima t.t.kiyoshi n.t.da nagasaki R&D Cent.r Mitsubishi Heavy Industries Ltd. Nagasaki 851-0392 JapanNagasaki R&D Center Mitsubishi Heavy Industries Ltd. Nagasaki 851-0392 JapanNagasaki R&D Center Mitsubishi Heavy Industries Ltd. Nagasaki 851-0392 JapanFaculty of Engineering Okayama University Okayama 700-8530 Japan

A simulat.on met.od for microscopic creep damage at.grain boundaries in t.e fine-grain heat.affect.d zone of low-alloy st.el welds involving high energy piping was proposed on t.e basis of t.e combinat.on of elast.c-creep FEM (finit. element.met.od) analysis and random fract.re resist.nce modeling of t.e mat.rials. t.e procedure t. det.rmine t.e init.at.on and growt.-driving forces of small defect. were briefly described. t.en, a simulat.on procedure combining t.e st.ess dist.ibut.on from elast.c-creep FEM and t.e random fract.re resist.nce model was proposed, and Ms procedure was applied t. t.e simulat.on of t.e microscopic damage progress in a welded joint.model t.st.and in act.al power piping. t.e result. in t.rms of t.e simulat.d number densit. of small defect. t.roughout.t.e wall t.ickness were in good agreement.wit. t.e observed result..

关键词： t.pe IV creep damage welding 2.25Cr-lMo st.el high-energy piping numerical simulat.on small defect

Kalman Filt.r and H_(∞)Filt.r Based Linear Quadrat.c Regulat.r for Furut. Pendulum

在线全文

学校读者我要写书评

暂无评论

Comput.r Syst.ms Science & Engineering 2022年第11期43卷 605-623页

作者： n.Arulmozhi t.Aruldoss Albert.Vict.rie Depart.ent.of Elect.onics and Inst.ument.t.on Engineering Government College of TechnologyCoimbatoreTamil NaduIndia Depart.ent.of Elect.ical and Elect.onics Engineering Anna UniversityRegional CampusCoimbatoreTamil NaduIndia

t.is paper deals wit. Furut. Pendulum(FP)or Rot.ry Invert.d Pendulum(RIP),which is an under-act.at.d non-minimum unst.ble non-linear *** process considered along wit. uncert.int.es which are unmodelled and analyses t.e performance of Linear Quadrat.c Regulat.r(LQR)wit. Kalman filt.r and H∞filt.r as t.o filt.r *** LQR is a t.chnique for developing pract.cal feedback,in addit.on t.e desired x shows t.e vect.r of desirable st.t.s and is used as t.e ext.rnal input.t. t.e closed-loop *** effect.veness of t.e t.o filt.rs in FP or RIP are measured and cont.ast.d wit. rise t.me,peak t.me,set.ling t.me and maximum peak overshoot.for t.me domain *** filt.rs are also t.st.d wit. gain margin,phase margin,disk st.bilit. margins for frequency domain performance and worst.case st.bilit. margins for performance due t. *** H-infinit. filt.r reduces t.e est.mat. error t. a minimum,making it.resilient.in t.e worst.case t.an t.e st.ndard Kalman ***,when t.eβrest.ict.on value lowers,t.e H∞filt.r becomes more *** worst.case gain performance is also focused for t.e t.o filt.r configurat.ons and t.st.d where H∞filt.r is found t. out.erform t.wards robust.st.bilit. and *** t.e swit.hover bet.een t.e t.o filt.rs is dependent.upon a user-specified co-efficient.t.at.gives t.e flexibilit. in t.e design of non-linear *** non-linear process is t.st.d for set.point.t.acking,dist.rbance reject.on,un-modelled noise dynamics and uncert.int.es,which records robust.performance t.wards st.bilit..

关键词： Furut. pendulum linear quadrat.c regulat.r kalman filt.r non-linear process t.o filt.r configurat.ons