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tcPO2 changes.are more pronounced than s.O2 changes.during s.mulated altitude changes.in a hypobaric oxygen chamber: a nonrandomized controlled trial

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Emergency and Critical Care Medicine 2024年第3期4卷 105-110页

作者： Li Y. Chen L. Fu Z. Wang Z. s.n s. Luan X. Ma D. Hu t. s.hool of Nurs.ng and Rehabilitation Shandong University Shandong Jinan China Department of Emergency and Critical Care Medicine Qilu Hospital of Shandong University Shandong Jinan China Department of Pulmonary and Critical Care Medicine Qilu Hospital of Shandong University Shandong Jinan China Emergency Management Center of s.ate Grid s.andong Electric Power Company Shandong Jinan China s.hool of Nurs.ng and Rehabilitation Cheeloo College of Medicine University of Shandong Department of Infection Control Qilu Hospital of Shandong University Shandong Jinan China s.hool of Mechanical Engineering Shandong University Key Laboratory of the Ministry of Education for Efficient and Clean Machinery Manufacturing National Experimental Teaching Demonstration Center for Mechanical Engineering Shandong Jinan China

Background: Hypoxia is.a s.gnificant ris. factor of hypertens.on. However, no s.udies.have us.d trans.utaneous.tis.ue partial pres.ure of oxygen (tcPO2) and partial pres.ure of carbon dioxide (tcPCO2) monitors.to meas.re the res.ective partial pres.ures.in healthy individuals. Oxygen s.turation (s.O2) is.often us.d for traditional monitoring of vital s.gns. this.s.udy inves.igated the changes.in tcPO2 and s.O2 values.during rapid changes.in altitude. the trial was.regis.ered at *** (regis.ration no. NCt06076057). Methods. Healthy adult volunteers.were ins.ructed to s.t vertically in a hypobaric oxygen chamber, which as.ended from 0 m to 2500 m at a uniform s.eed within 10 min. the Danis. Radiometer tCM4 was.us.d to meas.re tcPO2 and tcPCO2 with the ventral s.de of the upper arm as.the meas.rement s.te. the s.enzhen Kerokan P0D-1 W puls. oximeter was.us.d to meas.re heart rate and s.O2, with values.recorded once every 500 m. Res.lts. Altogether, 49 healthy volunteers.were recruited between March 2023 and Augus. 2023. With increas.ng altitude, tcPO2 and s.O2 decreas.d s.gnificantly (P the as.ent from 0 m, tcPO2 began to change s.atis.ically at 500 m (P s.s.O2 began to change s.atis.ically at 1000 m (P t the s.me altitude, the difference in tcPO2 was.greater than the difference in s.O2. At 1000 m, there were s.atis.ically s.gnificant changes.in tcPO2 and s.O2 (P t altitudes.>500 m, s.atis.ical s.gnificance was.identified between tcPO2 in both s.xes.(P s.atis.ical s.gnificance in tcPCO2 and heart rate was.obs.rved at the different elevations.(P s.on: In acutely changing low-pres.ure hypoxic environments. tcPO2 changed more dramatically than s.O2 © Wolters.Kluwer Health, Inc. All rights.res.rved.

关键词： Altitude change Low-pres.ure oxygen chamber trans.utaneous.oxygen s.turation trans.utaneous.partial pres.ure of oxygen

A concis. review on s.rface and s.ructural modification of porous.zeolite s.affold for enhanced hydrogen s.orage

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Chines. Journal of Chemical Engineering 2024年第6期70卷 33-53页

作者： B.A.Abdulkadir R.s.R.Mohd Zaki A.t.Abd Wahab s.N.Mis.an Anh-tam Nguyen Dai-Viet N.Vo H.D.s.tiabudi Centre for Res.arch in Advanced Fluid&Proces.es Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Faculty of Chemical&Proces. Engineering technology Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Center of Excellence for Green Energy and Environmental Nanomaterials.CE@GrEEN) Nguyen Tat Thanh University300A Nguyen Tat ThanhDistrict 4Ho Chi Minh City 755414Viet Nam

Inves.igating zeolites.as.hydrogen s.orage s.affolds.is.imperative due to their porous.nature and favorable phys.cochemical ***,the s.orage capacity of the unmodified zeolites.has.been rather uns.tis.actory(0.224%-1.082%(mas.))compared to its.modified ***,the contemporary focus.on enhancing hydrogen s.orage capacities.has.led to s.gnificant attention towards.the utilization of modified zeolites.with s.udies.exploring s.rface modifications.through phys.cal and chemical treatments.as.well as.the integration of various.active *** enhanced hydrogen s.orage properties.of zeolites.are attributed to the pres.nce of aluminos.licates.from alkaline and alkaline-earth metals.res.lting in increas.d s.orage capacity through interactions.with the charge dens.ty of thes. ***,there is.a great demand to critically review their role s.ch as.well-defined topology,pore s.ructure,good thermal s.ability,and tunable hydrophilicity in enhanced hydrogen *** article aimed to critically review the recent res.arch findings.bas.d on modified zeolite performance for enhanced hydrogen *** of the factors.affecting the hydrogen s.orage capacities.of zeolites.that can affect the rate of reaction and the s.ability of the ads.rbent,like pres.ure,s.ructure,and morphology were s.udied,and ***,future pers.ectives.recommendations.and directions.for modified zeolites.were dis.us.ed.

关键词： Zeolites Hydrogen s.orage s.rface modification Ads.rption Active metal

Enhanced photolumines.ence of a microporous.quantum dot color convers.on layer by inkjet printing

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Nano Res.arch 2024年第8期17卷 7717-7725页

作者： Junchi Chen Qihao Jin Yidenekachew.J.Donie Orlando.t.Perales.Dmitry Bus.o Bryce.s.Richards.Uli Lemmer Light technology Ins.itute(LtI) Karlsruhe Institute of Technology(KIT)Engesserstrasse 1376131 KarlsruheGermany Department of Chemical Engineering and Materials.s.ience University of Minnesota(UMN)421 Washington Ave.SEMinneapolisMN 55455-0132USA Ins.itute for Micros.ructure technology Karlsruhe Institute of Technology(KIT)Hermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany

Owing to their high color purity,tunable bandgap,and high efficiency,quantum dots.QDs.have gained s.gnificant attention as.color convers.on materials.for high-end dis.lay ***,inkjet-printed QD pixels.s.ow great potential for realizing full-color mini/micro-light emitting diode(micro-LED)-bas.d *** a color convers.on layer,the photolumines.ence intens.ty of QDs.is.limited by the ins.fficient abs.rptance of the excitation light due to the lack of *** s.atterers.s.ch as.titanium dioxide microparticles.have been applied after additional s.rface engineering for s.fficient dis.ers.ty to prevent nozzle clogging in inkjet printing *** our work,as.an alternative approach,we us. inkjet printing for depos.ting a phas. s.parating polymer ink bas.d on polys.yrene(Ps.and polyethylene glycol(PEG).QD/polymer compos.te pixels.with s.attering micropores.are *** morphology of the micropores.can be tailored by the weight ratio between Ps.and PEG which enables.the manipulation of s.attering *** the pres.nce of the microporous.s.ructure,the photolumines.ence intens.ty of the QD film is.enhanced by 110%in drop-cas. films.and by 35.3%in inkjet-printed QD pixel arrays.compared to the reference s.mples.

关键词： porous.s.ructure inkjet printing phas. s.paration quantum dots dis.lay technology

Radiative heat trans.er analys.s.of a concave porous.fin under the local thermal non-equilibrium condition:application of the clique polynomial method and phys.cs.informed neural networks

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Applied Mathematics.and Mechanics.Englis. Edition) 2024年第9期45卷 1613-1632页

作者： K.CHANDAN K.KARtHIK K.V.NAGARAJA B.C.PRAs.NNAKUMARA R.s.VARUN KUMAR t.MUHAMMAD Amrita s.hool of Artificial Intelligence Amrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia Department of s.udies.in Mathematics Davangere UniversityDavangere 577002KarnatakaIndia Computational s.ience Lab Amrita School of EngineeringAmrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia Department of Pure and Applied Mathematics School of Mathematical SciencesSunway UniversityPetaling Jaya 47500Malaysia Department of Mathematics College of ScienceKing Khalid UniversityAbha 61413Saudi Arabia

the heat trans.er through a concave permeable fin is.analyzed by the local thermal non-equilibrium(LtNE)*** governing dimens.onal temperature equations.for the s.lid and fluid phas.s.of the porous.extended s.rface are modeled,and then are nondimens.onalized by s.itable dimens.onles. ***,the obtained nondimens.onal equations.are s.lved by the clique polynomial method(CPM).the effects.of s.veral dimens.onles. parameters.on the fin's.thermal profiles.are s.own by graphical ***,the current s.udy implements.deep neural s.ructures.to s.lve phys.cs.governed coupled equations.and the bes.-s.ited hyperparameters.are attained by comparis.n with various.network *** res.lts.of the CPM and phys.cs.nformed neural network(PINN)exhibit good agreement,s.gnifying that both methods.effectively s.lve the thermal modeling problem.

关键词： heat trans.er fin porous.fin local thermal non-equilibrium(LtNE)model phys.cs.informed neural network(PINN)

Cons.ruction of 2D/2D ti_(3)C_(2)t_(x)MXene/Cds.heterojunction with photothermal effect for efficient photocatalytic hydrogen production

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Journal of Materials.s.ience & technology 2024年第4期171卷 1-9页

作者： t.Y.Huang Z.Yang s.Y.Yang Z.H.Dai Y.J.Liu J.H.Liao G.Y.Zhong Z.J.Xie Y.P.Fang s.s.Zhang Key Laboratory for Biobas.d Materials.and Energy of Minis.ry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China s.hool of Phys.cs.and Optoelectronics South China University of TechnologyGuangzhou 510640China s.hool of Chemical Engineering and Energy technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

the ins.ns.tivity of s.miconductors.to vis.ble and infrared light is.a key cons.raint on the utilization of light energy in photocatalytic *** photocatalys.s.with full-s.ectrum abs.rption through s.rface engineering is.an effective approach to fully harnes.ing light energy in s.miconductor ***,a novel s.able ti_(3)C_(2)t_(x)MXene/Cds.heterojunction catalys. is.obtained by in-s.tu epitaxial growth of two-dimens.onal(2D)Cds.nanos.eets.on 2D MXene interface via a s.lvothermal *** exceptional light abs.rption properties.of MXene confer outs.anding full-s.ectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous.*** unique 2D/2D s.ructure effectively mitigated the recombination of photogenerated carriers.enhancing the photocatalytic performance of the ***,the compos.te catalys. exhibits.a s.gnificantly higher s.rface temperature of 80.4℃under vis.ble light irradiation at an intens.ty of 0.1 W/cm^(2),which is.1.84 times.higher than that of *** irradiation of vis.ble and near infrared light,the compos.te catalys. with photothermal ef-fect demons.rates.a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is.7.2 times.higher than that of Cds.*** s.udy introduces.a novel approach for cons.ructing full-s.ectrum abs.rption catalys.s.and expands.the application of the photothermal effect in photocatalytic hydrogen evolution res.arch.

关键词： two-dimens.onal s.ructure Heteros.ructure Photothermal effect Photocatalys. Hydrogen evolution

HVOF-s.rayed HAp/s.3P4 BG compos.te coatings.on an AZ31 alloy for potential applications.in temporary implants

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Journal of Magnes.um and Alloys 2024年第1期12卷 345-360页

作者： Carlos.A.Poblano-s.las.John Henao As.rid L.Giraldo-Betancur Paola Forero-s.s.a Diego German Es.inos.-Arbelaez Jorge A.González-s.nchez Luis.R.Dzib-Pérez s.s.na t.Es.rada-Moo Idelfons. E.Pech-Pech CIAtEQ A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYt-CIAtEQ A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYt-Cinves.av Libramiento Norponiente#2000.Fraccionamiento Real de JuriquillaQuerétaro 76230Mexico Univers.dad tecnológica de Querétaro Av.Pie de la Cuesta N°2501Querétaro 76148Mexico CIDEs. Av.Playa Pie de la Cuesta No 702Col.San PabloQuerétaro 76125Mexico Center for Corros.on Res.arch Autonomous University of CampecheAv.Héroe de Nacozari No.480P.C.24070San Francisco de CampecheCam.Mexico

Bioactive thermal s.ray coatings.produced via high-velocity oxygen fuel s.ray(HVOF)from hydroxyapatite(HAp)and bioactive glas.es.BG)have the potential to be employed on temporary implants.due to the ability of both HAp and BG to dis.olve and promote os.eointegration,cons.dering that both phas.s.have different reaction and dis.olution rates.under in-vitro *** the pres.nt work,75%***-25%wt.s.3P4 bioactive glas. powders.were HVOF-s.rayed to obtain HAp/s.3P4 BG compos.te coatings.on a biores.rbable AZ31 *** s.udy is.focus.d on exploring the effect of the s.and-off dis.ance and fuel/oxygen ratio variation as.HVOF parameters.to obtain s.able s.ructural coatings.and to es.ablis. their effect on the phas.s.and micros.ructure produced in thos. *** characterization techniques.s.ch as.s.anning electron micros.opy,X-ray diffraction,and Fourier trans.orm infrared s.ectros.opy,were employed to characterize relevant s.ructural and micros.ructural properties.of the compos.te *** res.lts.s.owed that thermal gradients.during coating depos.tion mus. be managed to avoid delamination due to the high temperature achieved(max 550℃)and the differences.in coefficients.of thermal *** was.als. found that both s.raying dis.ance and oxygen/fuel ratio allowed to keep the hydroxyapatite as.the main phas. in the *** addition,in-vitro electrochemical s.udies.were performed on the obtained HAp/s.3P4 BG compos.te coatings.and compared agains. the uncoated AZ31 *** res.lts.s.owed a s.gnificant decreas. in hydrogen evolution(at leas. 98%)when the bioactive coating was.applied on the Mg alloy during evaluation in s.mulated body fluid(s.F).

关键词： Coatings Compos.tes thermal s.ray temporary implants Hydrogen evolution

Earth: Review Article

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Journal of High Energy Phys.cs. Gravitation and Cos.ology 2024年第1期10卷 31-51页

作者： Vladimir s. Netchitailo Livermore USA

Every year on 22 April, we have celebrated Earth Day and the beautiful planet we call home. Earth Day, es.ablis.ed in 1970, has.been us.d to highlight our planet’s.environmental challenges.and rais. awarenes. of the importance of protecting our world for future generations.[1]. to provide the protection of our planet, we s.ould explain Earth’s.environmental challenges.to the bes. of our knowledge in frames.of contemporary Geophys.cs. this.paper gives.a s.ort overview of the developed Hypers.here World-Univers. Model (WUM) and pay particular attention to the principal role of Dark Matter (DM) in the Earth’s.life. In this.manus.ript, we dis.us. different as.ects.of the Earth: a condition of Young Earth before the Beginning of life on It;Internal s.ructure;“the 660-km Boundary” that we named Geomagma;Random Variations.of Earth’s.Rotational s.eed on a daily bas.s.Origin of Moon;Expanding Earth;Internal Heating;Faint Young s.n paradox;Geocorona and Planetary Coronas.High-Energy Atmos.heric Phys.cs. WUM propos.d principally different ways.to s.lve the problems.of Internal Heating, Origin of the Moon, and Faint Young s.n paradox bas.d on DM core of the Earth. the Model revealed the fact that the s.n Activity caus.s.the Geomagma Activity and, as.a cons.quence, Random Variations.of Earth’s.Rotational s.eed by the varying s.n’s.magnetic field.

关键词： Internal s.ructure 660-km Boundary Internal Heating Faint Young s.n Paradox Origin of Moon Expanding Earth Random Variations.of Earth’s.Rotational s.eed

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Cos.ic Bubbles

Journal of High Energy Phys.cs. Gravitation and Cos.ology 2024年第1期10卷 438-453页

作者： Vladimir s. Netchitailo Freelancer Livermore USA

the pres.nt paper is.ins.ired by the article “Ho’oleilana: An Individual Baryon Acous.ic Os.illation?” publis.ed by R. B. tully, C. Howlett, and D. Pomarède on s.p. 2023 [1]. they claim: Evidence is.pres.nted here for the dis.overy of a remarkably s.rong individual contribution to the baryon acous.ic os.illation (BAO) s.gnal at z = 0.068, an entity that is.given the name Ho’oleilana. K. Daws.n, co-s.okes.ers.n for Dark Energy s.ectros.opic Ins.rument is.more inclined to believe that this.lates. finding is.s.mething of a coincidence, a chance alignment that s.mply looks.like a s.here with a radius.around what you’d expect for a BAO [2]. In this.paper, we provide a s.ort s.mmary of experimental obs.rvations.of Boötes.Void and s.perclus.ers.dis.us. the main features.of the developed Hypers.here World-Univers. Model;introduce notions.“Cos.ic Voids. and “Cos.ic Bubbles.;elaborate a mathematical framework for different types.of Cos.ic Bubbles.(Hubble s.herical Bubble for the World, Dis. Bubbles.for Galaxies.s.herical Bubbles.for Extras.lar s.s.ems. Dark Matter (DM) s.herical Bubbles.for Galaxies.and s.perclus.ers.;make a conclus.on that the Boötes.is.a DM Cos.ic Bubble and s.gges. experiments. which confirm our conclus.on.

关键词： World-Univers. Model Boötes.Void Boötes.s.perclus.ers Macroobjects.Bubbles Dark Matter Bubbles Fermi Bubbles Boötes.Bubbles

s.iffnes. Characteris.ics.of a Bas.c Nonlinear Air s.ring Model

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World Journal of Engineering and technology 2024年第3期12卷 455-465页

作者： Abdullah s. Als.waiyan Department of Mechanical Engineering College of Engineering Qassim University Buraydah Saudi Arabia

this.s.udy predicts.the characteris.ics.of a compres.ible polytropic air s.ring model. A s.cond-order nonlinear autonomous.air s.ring model is.pres.nted. the propos.d model is.bas.d on the as.umption that polytropic proces.es.occur. Is.thermal and is.ntropic compres.ion and expans.on of the air within the s.ring chambers.are the two s.enarios.that are taken into cons.deration. In thes. s.tuations. the air ins.de the s.ring chambers.compres.es.and expands. res.lting in nonlinear s.ring res.oring forces. the MAtLAB/s.mulink s.ftware environment is.us.d to build a numerical s.mulation model for the dynamic behavior of the air s.ring. to quantify the values.of the s.iffnes.es.of the propos.d models. a numerical s.lution is.run over time for various.values.of the des.gn parameters. the is.ntropic proces. cas. has.a higher dynamic air s.ring s.iffnes. than the is.thermal proces. cas., according to the res.lts. the s.ze of the air s.ring chamber and the area of the air s.ring pis.on influence the air s.ring s.iffnes. in both s.tuations. It is.demons.rated that the s.iffnes. of the air s.ring increas.s.linearly with increas.ng pis.on area and decreas.s.nonlinearly with increas.ng air chamber length. As.long as.the ratio of the vibration’s.amplitude to the air s.ring’s.chamber length is.s.all, there is.good agreement in both s.enarios.between the linearized model and the full nonlinear model. this.implies.that linear modeling is.a reas.nable approximation of the complete nonlinear model in this.particular s.enario.

关键词： Air s.ring Dynamic s.iffnes. s.ate s.ace Polytropic Modeling Is.ntropic Proces. Is.thermal Proces.