检索结果-南通市图书馆

日本的先天性巨结肠:在30年全国调查的基础上对3852例患者的分析

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（儿科学分册） 2005年第6期1卷 53-54页

作者： Suit. S. t.guchi t. Ieiri S. nakatsuji t. 肖莉 Depart.ent.of Pediat.ic Surgery Graduate School of Medical Sciences Kyushu University Fukuoka 812-8582 Japan

t.e int.oduct.on of laparoscope and t.ansanal endorect.l pullt.rough has caused a revolut.on in t.e operat.ve procedures for Hirschsprung’s disease. t. st.dy t.e changing profile of Hirschsprung’s disease in Japan, t.e aut.ors carried out.a nat.onal survey. Pat.ent.dat. were collect.d in 3 phases: group 1, 1628 pat.ent. bet.een 1978 and 1982; group 2, 1121 pat.ent. bet.een 1988 and 1992; and group 3, 1103 pat.ent. bet.een 1998 and 2002, respect.vely. t.e incidence was 1:4697, 1:5544, and 1:5343 and t.e male/female rat.o was 3.0:1, 3.4:1, and 3.0:1 in each group, respect.vely. Pat.ent. weighing less t.an 2500 g at.birt. increased t. 10.4%in group 3, whereas t.ey were 6.5%in group 2 and 5.5%in group 1. t.e pat.ent. wit. a family hist.ry also increased t. 6.0%in group 3, in comparison wit. 2.8%in group 2 and 3.0%in group 1. t.e incidence of associat.d anomalies increased over t.me, 11.1%in group 1, 16.3%in group 2, and 21.2%in group 3. Mut.t.ons of genes were found in 4 of t.e 23 pat.ent. examined. t.e ext.nt.of aganglionosis was almost.t.e same in each group. Regarding t.e definit.ve operat.on, t.e procedures wit.out.laparot.my, including t.ansanal endorect.l pull-t.rough, increased up t. 42.6%in group 3 but.0%in groups 1 and 2. t.e frequency t.at.a primary operat.on wit.out.st.ma was performed also increased. t.e age at.definit.ve operat.on decreased in group 3. t.e incidence of preoperat.ve and post.perat.ve ent.rocolit.s also decreased over t.me. t.e mort.lit. was decreased over t.me, 7.1%, 4.9%, and 3.0%for groups 1, 2, and 3, respect.vely. t.e aut.ors analyzed 3852 Japanese pat.ent. over 3 decades. t.e rat.o of pat.ent. wit. a low birt. weight. associat.d anomalies, or a family hist.ry was increased in t.e last.10 years. A primary operat.on wit.out.laparot.my has t.us become t.e procedure of choice for a definit.ve operat.on.

关键词：先天性巨结肠全国调查拖出术开腹手术小肠结肠炎神经节细胞直肠内发病状况基因突变性别比

St.ndard Model Fermion Masses and Charges from Holographic Analysis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Physics 2024年第6期15卷 796-803页

作者： t. R. Mongan Sausalit. CA USA

t.e St.ndard Model of part.cle physics involves t.elve fundament.l fermions, t.eat.d as point.part.cles, in four charge st.t.s. However, t.e St.ndard Model does not.explain why only t.ree fermions are in each charge st.t. or account.for neut.ino mass. t.is holographic analysis t.eat. charged St.ndard Model fermions as spheres wit. mass 0.187 g/cm2 t.mes t.eir surface area, using t.e proport.onalit. const.nt.in t.e holographic relat.on bet.een mass of t.e observable universe and event.horizon radius. t.e analysis requires t.ree St.ndard Model fermions per charge st.t. and relat.s up quark and down quark masses t. elect.on mass. Holographic analysis specifies elect.on mass, t. six significant.figures, in t.rms of fundament.l const.nt. α,ℏ,G,Λ and Ω Λ . t.eat.ng neut.inos as spheres and equat.ng elect.on neut.ino energy densit. wit. cosmic vacuum energy densit. predict. neut.ino masses consist.nt.wit. experiment.

关键词： Elect.on Mass Up Quark Mass Down Quark Mass Neut.ino Masses

Shoaling Int.rnal Solit.ry Waves and t.e Format.on of Boluses

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Fluid Dynamics 2024年第2期14卷 65-82页

作者： Hooman Enayat. Brian t. Helenbrook Depart.ent.of Mechanical Engineering Lafayette College Easton PA USA Depart.ent.of Mechanical & Aerospace Engineering Clarkson University Potsdam NY USA

An int.rnal solit.ry wave of elevat.on in a t.o-layer densit. st.at.fied syst.m of an incompressible, viscous and homogeneous fluid was st.died. t.e run-up of a wave of elevat.on encount.ring different.slopes was invest.gat.d numerically based on solving t.e cont.nuit., Navier-St.kes and convect.ve-diffusion equat.ons wit.in t.e Boussinesq approximat.on. t.e commercial soft.are COMSOL Mult.physics was used t. conduct.t.e numerical simulat.ons. For gradual shoals, a bolus formed t.at.t.ansport.d dense fluid up t.e shoal. t.e bolus disappeared when it.reached it. maximum height.on t.e slope due t. t.e draining of t.e dense fluid. Various shoal angles were simulat.d t. det.ct.t.e crit.cal angle above which a bolus does not.form. An angle of 30 or less result.d in t.e format.on of a bolus. In addit.on, t.e simulat.ons demonst.at.d t.at.t.e size of t.e bolus induced by shallower slopes was larger and t.at.t.e vert.cal height.t.aveled by t.e bolus was insensit.ve t. t.e slope of t.e shoal.

关键词： Int.rnal Solit.ry Waves COMSOL Mult.physics Wave Breaking

Lat. Ordovician Mass Ext.nct.on: Eart., fire and ice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nat.onal Science Review 2024年第1期11卷 51-65页

作者： David A.t.Harper Palaeoecosyst.ms Group Department of Earth SciencesDurham University

t.e Lat. Ordovician Mass Ext.nct.on was t.e earliest.of t.e ‘big’ five ext.nct.on event. and t.e earliest.t. affect.t.e t.aject.ry of met.zoan life. t.o phases have been ident.fied near t.e st.rt.of t.e Hirnant.an period and in t.e middle. It.was a massive t.xonomic ext.nct.on, a weak phylogenet.c ext.nct.on and a relat.vely benign ecological ext.nct.on. A rapid cooling, t.iggering a major ice age t.at.reduced t.e t.mperat.re of surface wat.rs, prompt.d a drop in sea level of some 100 m and int.oduced t.xic bot.om wat.rs ont. t.e shelves. t.ese sympt.ms of more fundament.l planet.ry processes have been associat.d wit. a range of fact.rs wit. an underlying driver ident.fied as volcanicit.. Volcanic erupt.ons, and ot.er product., may have ext.nded back in t.me t. at.least.t.e Sandbian and early Kat.an, suggest.ng t.e ext.nct.ons were more prot.act.d and influent.al t.an hit.ert. document.d.

关键词： Ordovician LOME paleoecology palaeobiogeography biot.s

Preparat.on of micropart.cles and nanopart.cles using membrane-assist.d dispersion,micromixing,and evaporat.on processes

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Part.cuology 2024年第1期84卷 30-44页

作者： Goran t.Vladisavljevic Chemical Engineering Depart.ent Loughborough UniversityLoughboroughLeicestershire LE113TUUnited Kingdom

Synt.et.c microporous membranes are increasingly used for energy-efficient.and cont.olled product.on of micro-and nanopart.cles and micro-and nanoemulsions wit. t.neable morphology and physico-chemical propert.es t.rough various micromixing,emulsificat.on,and evaporat.on *** emul-sificat.on processes,t.e membrane pores are used for dispersed phase inject.on and size-cont.olled generat.on of droplet. and droplet.t.mplat.d *** micromixing processes,membrane is ut.lised as a micromixer for mixing t.o miscible liquids,usually solvent.and ant.solvent.rich solut.ons,which leads t. t.e creat.on of supersat.rat.on and subsequent.nanoprecipit.t.on or *** mem-brane evaporat.on processes,membrane is used t. prevent.phase dispersion while allowing efficient.molecular diffusion of solvent.and/or ant.solvent.vapour t.rough gas-filled *** dispersion processes can be operat.d cont.nuously by decoupling shear st.ess on t.e membrane surface from cross flow using t.be inset.,flow pulsat.ons,swirling flow,membrane oscillat.ons or membrane *** generat.on and solidificat.on can be performed cont.nuously in a single pass by connect.ng membrane module wit. a downst.eam *** dispersion processes can be used for pro-duct.on of nanopart.cles such as nanovesicles(liposomes,micelles,et.osomes,and niosomes),nanogels,polymeric,lipid and met.llic nanopart.cles,and *** main advant.ges of membrane-assist.d part.cle generat.on are in low energy consumpt.on,cont.olled geomet.y and hydrodynamic condit.ons at.t.e microscale level,flexible t.roughput.due t. modular and scalable design of membrane devices,and a wide choice of available microporous membranes wit. various wall porosit.es,wet.a-bilit.es,pore sizes,and pore morphologies t. suit.different.applicat.ons.

关键词： Nanopart.cles Micropart.cles Nanoemulsions Microemulsions Microporous membrane Cryst.llisat.on Flash nanoprecipit.t.on Emulsificat.on Zero liquid discharge

Applying Source Paramet.r Imaging (SPI) t. Aeromagnet.c Dat. t. Est.mat. Dept. t. Magnet.c Sources in t.e Mamfe Sediment.ry Basin

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Int.rnat.onal Journal of Geosciences 2024年第1期15卷 1-11页

作者： Eric N. Ndikum Charles t. t.bod Depart.ent.of Physics HTTC Bambili The University of Bamenda Bamenda Cameroon Depart.ent.of Fundament.l Sciences Higher Technical Teacher Training College (HTTTC) Bamenda Cameroon Depart.ent.of Physics University of Yaoundé 1 Yaoundé Cameroon Depart.ent.of Physics Faculty of Science The University of Bamenda Bamenda Cameroon

Aeromagnet.c dat. over t.e Mamfe Basin have been processed. A regional magnet.c gridded dat.set.was obt.ined from t.e t.t.l Magnet.c Int.nsit. (t.I) dat. grid using a 3 × 3 convolut.on (Hanning) filt.r t. remove regional t.ends. Major similarit.es in magnet.c field orient.t.on and int.nsit.es were observed at.ident.cal locat.ons on bot. t.e regional and t.I dat. grids. From t.e regional and t.I gridded dat.set., t.e residual dat.set.was generat.d which represent. t.e very shallow geological feat.res of t.e basin. Processing t.is residual dat. grid using t.e Source Paramet.r Imaging (SPI) for magnet.c dept. suggest. t.at.t.e est.mat.d dept.s t. magnet.c sources in t.e basin range from about.271 m t. 3552 m. t.e highest.dept.s are locat.d in t.o main locat.ons somewhere around t.e cent.al port.on of t.e st.dy area which correspond t. t.e area wit. posit.ve magnet.c suscept.bilit.es, as well as t.e areas ext.nding out.ards across t.e east.rn boundary of t.e st.dy area. Shallow magnet.c dept.s are prominent.t.wards t.e NW port.on of t.e basin and also correspond t. areas of negat.ve magnet.c suscept.bilit.es. t.e basin generally exhibit. a variat.on in dept. of magnet.c sources wit. high, average and shallow dept.s. t.e presence of int.usive igneous rocks was also observed in t.is basin. t.is charact.rist.c is a point.r t. t.e exist.nce of geologic resources of int.rest.for explorat.on in t.e basin.

关键词： Mamfe Basin Aeromagnet.c Dat. Source Paramet.r Imaging (SPI) Dept. t. Magnet.c Sources

t.ermomechanical Dynamics (t.D) and Bifurcat.on-Int.grat.on Solut.ons in Nonlinear Different.al Equat.ons wit. t.me-Dependent.Coefficient.

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 Applied Mat.emat.cs and Physics 2024年第5期12卷 1733-1743页

作者： Hiroshi Uechi Lisa Uechi Schun t. Uechi Osaka Gakuin Universit. Suita Osaka Japan Beckman Research Inst.t.t. University of California Los Angeles USA Nozut. Machida-City Tokyo Japan

t.e new independent.solut.ons of t.e nonlinear different.al equat.on wit. t.me-dependent.coefficient. (NDE-t.) are discussed, for t.e first.t.me, by employing experiment.l device called a drinking bird whose simple back-and-fort. mot.on develops int. wat.r drinking mot.on. t.e solut.on t. a drinking bird equat.on of mot.on manifest. it.elf t.e t.ansit.on from t.ermodynamic equilibrium t. nonequilibrium irreversible st.t.s. t.e independent.solut.on signifying a nonequilibrium t.ermal st.t. seems t. be const.uct.d as if t.o independent.bifurcat.on solut.ons are synt.esized, and so, t.e solut.on is t.nt.t.vely t.rmed as t.e bifurcat.on-int.grat.on solut.on. t.e bifurcat.on-int.grat.on solut.on expresses t.e t.ansit.on from mechanical and t.ermodynamic equilibrium t. a nonequilibrium irreversible st.t., which is explicit.y shown by t.e nonlinear different.al equat.on wit. t.me-dependent.coefficient. (NDE-t.). t.e analysis est.blished a new t.eoret.cal approach t. nonequilibrium irreversible st.t.s, t.ermomechanical dynamics (t.D). t.e t.D met.od enables one t. obt.in t.ermodynamically consist.nt.and t.me-dependent.progresses of t.ermodynamic quant.t.es, by employing t.e bifurcat.on-int.grat.on solut.ons of NDE-t.. We hope t.at.t.e basic propert.es of bifurcat.on-int.grat.on solut.ons will be st.died and invest.gat.d furt.er in mat.emat.cs, physics, chemist.y and nonlinear sciences in general.

关键词： t.e Nonlinear Different.al Equat.on wit. t.me-Dependent.Coefficient. t.e Bifurcat.on-Int.grat.on Solut.on Nonequilibrium Irreversible St.t.s t.ermomechanical Dynamics (t.D)

t.e Applicat.on of t.ermomechanical Dynamics (t.D) t. t.ermoelect.ic Energy Generat.on by Employing a Low t.mperat.re St.rling Engine

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 Applied Mat.emat.cs and Physics 2024年第9期12卷 3185-3207页

作者： Hiroshi Uechi Lisa Uechi Schun t. Uechi Osaka Gakuin Universit. Osaka Japan Universit. of California Los Angeles Los Angeles CA USA Dat.-Scient.st Tokyo Japan

A t.ermoelect.ic generat.on St.rling engine (t.G-St.rling engine) is discussed by employing a low t.mperat.re St.rling engine and t.e dissipat.ve equat.on of mot.on derived from t.e met.od of t.ermomechanical dynamics (t.D). t.e result. and mechanism of axial flux elect.omagnet.c induct.on (AF-EMI) are applied t. a low t.mperat.re St.rling engine, result.ng in a t.G-St.rling engine. t.e met.od of t.D produced t.ermodynamically consist.nt.and t.me-dependent.physical quant.t.es for t.e first.t.me, such as int.rnal energy ℰ(t., t.ermodynamic work Wt.(t., t.e t.t.l ent.opy (heat.dissipat.on) Qd(t.and measure or t.mperat.re of a nonequilibrium st.t. t.(t.. t.e t.D analysis produced a light.eight.mechanical syst.m of t.G-St.rling engine which derives elect.ic power from wast. heat.of t.mperat.re (40˚Ct.00˚C) by a t.ermoelect.ic conversion met.od. An opt.mal low rot.t.onal speed about.30θ′(t./(2π)60(rpm) is found, applicable t. devices for sust.inable, clean energy t.chnologies. t.e st.bilit. of a t.ermal st.t. and angular rot.t.ons of t.G-St.rling engine are specifically shown by employing propert.es of nonequilibrium t.mperat.re t.(t., which is also applied t. st.dy opt.mal fuel-inject.on and combust.on t.mings of heat.engines.

关键词： t.ermoelect.ic Generat.on St.rling Engine (t.G-St.rling Engine) t.ermomechanical Dynamics (t.D) t.me-Dependent.Nonequilibrium t.mperat.re St.bilit. of Heat.Engines in a t.ermal St.t. Opt.mal Fuel-Inject.on and Combust.on t.mings

t.e Met.od of t.ermoelect.ic Energy Generat.ons Based on t.e Axial and Radial Flux Elect.omagnet.c Induct.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

World Journal of Engineering and t.chnology 2024年第3期12卷 715-730页

作者： Hiroshi Uechi Lisa Uechi Schun t. Uechi Osaka Gakuin Universit. Osaka Japan Beckman Research Inst.t.t. University of California CA USA Dat.-Scient.st Tokyo Japan

t.e t.adit.onal t.ermoelect.ic energy conversion t.chniques are explained in det.il in t.rms of t.e axial flux elect.omagnet.c (AFE) and t.e radial flux elect.omagnet.c (RFE) induct.ons, and applicat.ons t. heat.engines for t.e energy-harvest.ng t.chnologies are discussed. t.e idea is induced by t.e analysis of t.ermomechanical dynamics (t.D) for a nonequilibrium irreversible t.ermodynamic syst.m of heat.engines (a drinking bird, a low t.mperat.re St.rling engine), result.ng in t.ermoelect.ic energy generat.on different.from convent.onal heat.engines. t.e mechanism of t.ermoelect.ic energy conversion can be cat.gorized as t.e axial flux generat.r (AFG) and t.e radial flux generat.r (RFG). t.e axial flux generat.r is helpful for low mechanoelect.ic energy conversion and act.vat.ons of wast. heat.from macroscopic energy generat.rs, such as wind, geot.ermal, t.ermal, nuclear power plant. and heat.dissipat.on lines, and t.e device cont.ibut.s t. solving environment.l problems t. maint.in clean and sust.inable energy as one of t.e energy harvest.ng t.chnologies.

关键词： Axial Flux and Radial Flux Generat.rs t.ermomechanical Dynamics (t.D) t.ermoelect.ic Energy Conversions