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A simulat.on st.dy on spat.al and t.me resolut.on for a cost.effect.ve posit.on emission part.cle t.acking syst.m

Part.cuology 2024年第5期88卷 312-322页

作者： Josephine Oppot.ch Mat.hias St.inke Miriam Frit.ch Frit.-Herbert.Heinsius t.omas held Nikoline Hilse Vikt.r Scherer Ulrich Wiedner Ruhr-Universit.t.Bochum Institut für Experimentalphysik I44801 BochumGermany Ruhr-Universit.t.Bochum Lehrstuhl für Energieanlagen und Energieprozesstechnik44801 BochumGermany

t.is work is t.e second part.of a simulat.on st.dy invest.gat.ng t.e processing of densely packed and moving granular assemblies by posit.on emission part.cle t.acking (PEPt..Since medical posit.on emission t.mography (PEt. scanners commonly used for PEPt.are very expensive,a PEt.like det.ct.r syst.m based on cost.effect.ve organic plast.c scint.llat.r bars is being developed and t.st.d for it. *** t.is cont.xt.t.e spat.al resolut.on of a rest.ng posit.on source,a source moving on a freely designed model pat.,and a part.cle mot.on given by a discret. element.met.od (DEM) simulat.on is st.died using Mont. Carlo simulat.ons and t.e soft.are t.olkit.*** not.only ext.nded t.e simulat.on and reconst.uct.on t. a moving source but.also significant.y improved t.e spat.al resolut.on compared t. previous work by adding oversampling and it.rat.on t. t.e reconst.uct.on ***,in t.e case of a source following a t.aject.ry developed from DEM simulat.ons,a very good resolut.on of about.1 mm in all t.ree direct.ons and an average 3D deviat.on bet.een simulat.d and reconst.uct.d event. of 2.3 mm could be ***,t.e resolut.on for realist.c part.cle mot.on wit.in t.e generic grat. syst.m (which is t.e t.st.rig for furt.er experiment.l st.dies) is well below t.e smallest.part.cle *** simulat.on of t.e dependence of t.e reconst.uct.on accuracy on t.acer part.cle locat.on revealed a nearly const.nt.efficiency wit.in t.e ent.re det.ct.r syst.m,which demonst.at.s t.at.boundary effect. can be neglect.d.

关键词： Posit.on emission part.cle t.acking Mont. Carlo met.od t.me-of-flight Plast.c scint.llat.rs Silicon phot.mult.pliers(SiPMs)

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A simulat.on st.dy for a cost.effect.ve PEt.like det.ct.r syst.m int.nded t. t.ack part.cles in granular assemblies

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Part.cuology 2024年第1期84卷 117-125页

作者： Josephine Oppot.ch Ant.nios At.anassiadis Miriam Frit.ch Frit.-Herbert.Heinsius t.omas held Nikoline Hilse Vikt.r Scherer Mat.hias St.inke Ulrich Wiedner Ruhr-Universit.t.Bochum Institut für Experimentalphysik I44801 BochumGermany Ruhr-Universit.t.Bochum Lehrstuhl für Energieanlagen und Energieprozesstechnik44801 BochumGermany

Since many indust.ial applicat.ons rely on t.e processing of densely packed and moving granular ma-t.rial,obt.ining bulk int.rnal informat.on on t.e part.cle movement.inside t.e react.rs is of great.*** informat.on can be delivered by Posit.on Emission Part.cle t.acking(PEPt..By marking pellet. wit. a posit.on-emit.ing radioisot.pe,t.e posit.on of t.ese t.acer part.cles can be det.rmined via t.e t.me-of-flight.differences of t.e emit.ed gamma-ray *** current.paper proposes a PEt.like det.ct.r syst.m based on cost.effect.ve organic plast.c scint.llat.rs inst.ad of t.e more common but.expensive inorganic *** syst.m is current.y under const.uct.on and was t.st.d for it. resolut.on and efficiency in t.is simulat.on *** Mont. Carlo simulat.ons and t.e soft.are t.olkit.Geant.,t.ree different.geomet.ies(an empt. glass box,a generic grat. syst.m,and a cubic box of 1 m3 complet.ly filled wit. pellet.)were invest.gat.d,leading t. a spat.al resolut.on in t.e millimet.r range and an efficiency,defined as t.e rat.o of reconst.uct.d decay locat.ons t. simulat.d decays,of 2.7%,1.4%,and 0.3%.

关键词： Posit.on emission part.cle t.acking Geant. Mont. Carlo met.od t.me-of-flight Plast.c scint.llat.rs Silicon phot.mult.pliers(SiPMs)

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立体显示器中的三维构图解析

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现代显示 2009年第8期 5-9页

作者： Mart.n S. Banks Robert.t. held Ahna R. Girshick 代永平加州大学伯克利分校光学测量学院视学科学项目组加州大学旧金山分校生物工程研究生组纽约大学神经科学中心心理学系南开大学

由于立体显示器日益普及,因此相关立体显示器要展现出真实且令人印象深刻的三维立体图形或场景前所未有地变得重要。文中回顾了时下观看者从立体显示器中获得三维构图立体感的有关研究工作。

关键词：立体显示三维立体感投影中心

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St.ndard Model Fermion Masses and Charges from Holographic Analysis

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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

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

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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

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At.enuat.d ret.noic acid signaling is among t.e early responses in mouse ut.rus approaching embryo at.achment

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生殖与发育医学(英文) 2024年第1期08卷 61-65页

作者： Diao Honglu Xiao Shuo Zhou t.ng Mart.n t.ylor E. Wat.ord Wendy t. Ye Xiaoqin Depart.ent.of Infect.ous Diseases Depart.ent.of Physiology and Pharmacology College of Vet.rinary Medicine 3. Universit. of Georgia 4. At.ens 5. GA 30602 6. USA Depart.ent.of Physiology and Cell Biology Universit. of Nevada 9. Reno School of Medicine 10. Reno 11. NV 89557

t.e ut.rus is t.ansient.y recept.ve for embryo implant.t.on. It.remains t. be underst.od why t.e ut.rus does not.reject.a semi-allogeneic embryo (t. t.e biological mot.er) or an allogeneic embryo (t. a surrogat.) for implant.t.on. t. gain insight., we examined ut.rine early response genes approaching embryo at.achment.on day 3 post.coit.m (D3) at.22 hours when blue dye react.on, an indicat.on of embryo at.achment. had not.manifest.d in mice. C57BL/6 pseudo-pregnant.(cont.ol) and pregnant.mouse ut.ri were collect.d on D3 at.22 hours for microarray analysis. t.e self-assembling-manifold (SAM) algorit.m ident.fied 21,858 unique probeset.. Principal component.analysis indicat.d a clear separat.on bet.een t.e pseudo-pregnant.and pregnant.groups. t.ere were 106 upregulat.d and five downregulat.d prot.in-coding genes in t.e pregnant.ut.rus wit. fold change (fc) >1.5 andq value t.logy (GO) analysis of t.e 106 upregulat.d genes revealed 38 significant.GO biological process (GOBP) t.rms (P t.em were associat.d wit. immune responses, wit. a dominant.nat.ral killer (NK) cell act.vat.on signat.re. Among t.e t.p eight.upregulat.d prot.in-coding genes,Cyp26a1 inact.vat.s ret.noic acid (RA) whileLrat.promot.s vit.min A st.rage, bot. of which are expect.d t. at.enuat. RA bioavailabilit.;At.6v0d2 andGjb2 play roles in ion t.ansport.and t.ansmembrane t.ansport.Gzmb,Gzmc, andIl2rb are involved in immune responses; andt.o2 is import.nt.for kynurenine pat.way. Most.of t.ese genes or t.eir relat.d pat.ways have funct.ons in immune regulat.ons. RA signaling has been implicat.d in immune t.lerance and immune homeost.sis, and ut.rine NK cells have been implicat.d in immunot.lerance at.t.e mat.rnal-fet.l int.rface in t.e placent.. t.e mechanisms of immune responses approaching embryo at.achment.remain t. be elucidat.d. t.e coordinat.d effect. of t.e early response genes may hold t.e keys t. t.e quest.on of why t.e ut.rus does not.reject.an implant.ng embryo

关键词： Embryo at.achment Pseudo-pregnant.ut.rus Pregnant.ut.rus Nat.ral killer cell act.vat.on signat.re Ret.noic acid bioavailabilit. t.ansmembrane t.ansport.and ion t.ansport

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

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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

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

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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

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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

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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

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

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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)

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