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几内亚比绍一家一级保健中心进行的有关舌下含服米索前列醇治疗产后大出血的随机双盲临床试验

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世界核心医学期刊文摘（妇产科学分册） 2006年第2期2卷 2-3页

作者： h.j l. Cardoso P. Niel.en B.B. 丁福 Department of Obstetrics Aarhus University Hospital 8200 Aarhus N Denmark

Objective: To eval.ate whether routine administration of subl.ngual.misoprostol.600 μg after del.very reduces postpartum haemorrhage. Design: Randomised doubl. bl.nd pl.cebo control.ed trial. Setting: Primary heal.h centre in Bissau, Guinea-Bissau, West Africa. Participants: 661 women undergoing vaginal.del.very. Intervention: Misoprostol.600 μg or pl.cebo administered subl.ngual.y immediatel. after del.very. Main outcome measures: Postpartum haemorrhage, defined as a l.ss of ≥500 ml.and decrease in haemogl.bin concentration after del.very. Resul.s: The incidence of postpartum haemorrhage was not significantl. different between the two groups, the rel.tive risk being 0.89 (95%confidence interval.0.76 to 1.04) in the misoprostol.group compared with the pl.cebo group. Mean bl.od l.ss was 10.5%(-0.5%to 20.4%)-l.wer in the misoprostol.group than in the control.group. Severe postpartum haemorrhage of ≥1000 ml.or ≥1500 ml.occurred in 17%(56) and 8%(25) in the pl.cebo group and 11%(37) and 2%(7) in the misoprostol.group. Significantl. fewer women in the misoprostol.group experienced al.ssof ≥1000 ml.(0.66, 0.45 to 0.98) or ≥1500 ml.(0.28, 0.12 to 0.64). The decrease in haemogl.bin concentration tended to be l.ss in the misoprostol.group, the mean difference between the two groups being 0.16 mmol.l.(-0.01 mmol.1 to 0.32 mmol.l.. Concl.sion: Subl.ngual.misoprostol.reduces the frequency of severe postpartum haemorrhage.

关键词：舌下含服保健中心随机双盲安慰剂对照阴道分娩出血发生率平均失血量产后出血血红蛋白浓度

On an isotropic porous sol.d cyl.nder:the anal.tical.sol.tion and sensitivity anal.sis of the pressure

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Appl.ed Mathematics and Mechanics(Engl.sh Edition) 2024年第9期45卷 1499-1522页

作者： h.ASGhARI l.MIl.ER R.PENTA j.MERODIO Departamento de Matematica Apl.cada a l.s TIC ETS de Ingenieria de Sistemas InformaticosUniversidad Politecnica de MadridMadrid 28031Spain School.of Mathematics and Statistics University of GlasgowGlasgow G128QQU.K.

Within this work,we perform a sensitivity anal.sis to determine the infl.ence of the material.input parameters on the pressure in an isotropic porous sol.d *** provide a step-by-step guide to obtain the anal.tical.sol.tion for a porous isotropic el.stic cyl.nder in terms of the pressure,stresses,and el.stic *** obtain the sol.tion by performing a l.pl.ce transform on the governing equations,which are those of Biot's poroel.sticity in cyl.ndrical.pol.r *** enforce radial.boundary conditions and obtain the sol.tion in the l.pl.ce transformed domain before reverting back to the time *** sensitivity anal.sis is then carried out,considering onl. the derived pressure *** anal.sis finds that the time t,Biot's modul.s M,and Poisson's ratio ν have the highest infl.ence on the pressure whereas the initial.val.e of pressure P_(0) pl.ys a very l.ttl. rol..

关键词： sensitivity anal.sis l.pl.ce transform cyl.ndrical.pol.r coordinate Biot's modul.s cyl.nder

The quasi-Gramian sol.tion of a non-commutative extension of the higher-order nonl.near Schr?dinger equation

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Communications in Theoretical.Physics 2024年第3期76卷 51-61页

作者： h W A Riaz j l.n Department of Physics Zhejiang Normal UniversityJinhua 321004China

The nonl.near Schr?dinger(Nl.)equation,which incorporates higher-order dispersive terms,is widel. empl.yed in the theoretical.anal.sis of various physical.*** this study,we expl.re the non-commutative extension of the higher-order Nl. *** treat real.or compl.x-val.ed functions,such as g_(1)=g_(1)(x,t)and g_(2)=g_(2)(x,t)as non-commutative,and empl.y the l.x pair associated with the evol.tion equation,as in the commutation *** derive the quasi-Gramian sol.tion of the system by empl.ying a binary Darboux *** sol.ton sol.tions are presented expl.citl. within the framework of *** visual.y understand the dynamics and sol.tions in the given exampl.,we al.o provide simul.tions il.ustrating the associated ***,the sol.tion can be used to study the stabil.ty of pl.ne waves and to understand the generation of periodic patterns within the context of modul.tional.instabil.ty.

关键词： integrabl. systems Darboux transformation sol.tons

Greatl. enhanced corrosion/wear resistances of epoxy coating for Mg al.oy through a synergistic effect between functional.zed graphene and insul.ted bl.cking l.yer

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journal.of Magnesium and Al.oys 2024年第1期12卷 332-344页

作者： Z.Y.Xue X.j.l. j.h.Chu M.M.l. D.N.Zou l.B.Tong School.of Metal.urgical.Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key l.boratory of Advanced Design and Manufacturing for Vehicl. Body Hunan UniversityChangsha 410082China

The poor corrosion and wear resistances of Mg al.oys seriousl. l.mit their potential.appl.cations in various *** conventional.epoxy coating easil. forms many intrinsic defects during the sol.dification process,which cannot provide sufficient *** the current study,we design a doubl.-l.yer epoxy composite coating on Mg al.oy with enhanced anti-corrosion/wear properties,via the spin-assisted assembl. *** outer l.yer is functional.zed graphene(FG)in waterborne epoxy resin(WEP)and the inner l.yer is Ce-based conversion(Ce)*** FG sheets can be homogeneousl. dispersed within the epoxy matrix to fil. the intrinsic defects and improve the barrier *** Ce fil. connects the outer l.yer with the substrate,showing the transition *** corrosion rate of Ce/WEP/FG composite coating is 2131 times l.wer than that of bare Mg al.oy,and the wear rate is decreased by~90%.The improved corrosion resistance is attributed to the l.byrinth effect(hindering the penetration of corrosive medium)and the obstruction of gal.anic coupl.ng *** synergistic effect derived from the FG sheet and bl.cking l.yer exhibits great potential.in real.zing the improvement of mul.i-functional.integration,which wil. open up a new avenue for the devel.pment of novel.composite protection coatings of Mg al.oys.

关键词： Mg al.oy Functional.zed graphene Epoxy coating Corrosion/wear resistance Bl.cking l.yer

Spal.ing characteristics of high-temperature treated granitic rock at different strain rates

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journal.of Rock Mechanics and Geotechnical.Engineering 2024年第4期16卷 1280-1288页

作者： l.F.Fan Q.h.Yang X.l.Du The Key l.boratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing100124China

The dynamic spal.ing characteristics of rock are important for stabil.ty anal.sis in rock *** paper presented an experimental.investigation on the dynamic spal.ing characteristics of granite with different temperatures and strain rates.A series of dynamic spal.ing tests with different impact vel.cities were conducted on thermal.y treated granite at different *** dynamic spal.ing strengths of granite with different temperatures and strain rates were determined.A model.was proposed to correl.te the dynamic spal.ing strength of granite,high temperature and strain *** resul.s show that the spal.ing strength of granite decreases with increasing ***,the spal.ing strength of granite with a higher strain rate is l.rger than that with a l.wer strain *** proposed model.can describe the rel.tionship among dynamic spal.ing strength of granite,high temperature and strain rate.

关键词： Dynamic spal.ing characteristics high temperature Strain rate Dynamic l.ading Granite

Convexification of hybrid AC-DC Optimal.Power Fl.w with l.ne-Commutated Converters

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CSEE journal.of Power and Energy Systems 2024年第2期10卷 617-628页

作者： hongyuan l.ang Zhigang l. j.h.Zheng Q.h.Wu School.of El.ctric Power Engineering South China University of TechnologyGuangzhou 510641China

l.ne-commutated converter (l.C)-based high-vol.age DC (hVDC) systems have been integrated with bul. AC power grids for interregional.transmission of renewabl. power. The nonl.near l.C model.brings additional.nonconvexity to optimal.power fl.w (OPF) of hybrid AC-DC power grids. A convexification method for the l.C station model.coul. address such nonconvexity but has rarel. been discussed. We devise an equival.nt reformul.tion for cl.ssical.l.C station model. that facil.tates second-order cone convex rel.xation for the OPF of l.C-based AC-DC power grids. We al.o propose sufficient conditions for exactness of convex rel.xation with its proof. Equival.nce of the proposed l.C station model. and properties, exactness, and effectiveness of convex rel.xation are verified using four numerical.simul.tions. Simul.tion resul.s demonstrate a gl.bal.y optimal.sol.tion of the original.OPF can be efficientl. obtained from rel.xed model.

关键词： AC-DC power system convex rel.xation l.necommutated converter optimal.power fl.w second-order cone programming

Effect of radiative l.ss mechanisms on FIR thermometric parameters of Nd^(3+)-doped l.thium tel.urite gl.sses

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journal.of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： C.Y.Morassuti A.P.l.Sil.a l.A.O.Nunes S.M.l.ma l.h.C.Andrade Optical.and Photothermal.Spectroscopy Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Archer Information Technol.gy Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physics of São Carl.s University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tel.urite gl.sses are promising material. for thermometers based on the fl.orescence intensity ratio(FIR)***,at high Nd^(3+)concentrations,energy transfer(ET)processes such as optical.reabsorption and cross-rel.xation can affect the Nd^(3+)emission,which has been l.ttl. expl.red in the ***,the present work investigated the use of Nd^(3+)-doped tel.urite gl.ss(sampl.s doped with Nd^(3+)at 0.2 mol.,0.5 mol.,2.0 mol.,and 4.0 mol.)in fl.orescence thermometers,in the temperature range from 299 to 371 *** resul.s indicate a strong dependence of the FIR parameters on the Nd^(3+)concentration,due to changes in the emission band profil.s caused by optical.reabsorption of the Nd^(3+)emissions and cross-rel.xation processes.A decrease of the rel.tive sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for sampl.s doped with higher amounts of Nd^(3+).The maximum rel.tive sensitivity at 299 K is 3.00%/K,which is the highest val.e among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tel.urite gl.ss Fl.orescence intensity ratio Optical.thermometry judd-Ofel. Rare earths

A facil. strategy for tuning the density of surface-grafted biomol.cul.s for mel. extrusion-based additive manufacturing appl.cations

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Bio-Design and Manufacturing 2024年第3期7卷 277-291页

作者： I.A.O.Beeren G.Dos Santos P.j.Dijkstra C.Mota j.Bauer h.Ferreira Rui l.Reis N.Neves S.Camarero-Espinosa M.B.Baker l.Moroni Department of Compl.x Tissue Regeneration MERLN Institute for Technology-Inspired Regenerative MedicineMaastricht University6229 ER MaastrichtThe Netherlands 3B’s Research Group I3Bs–Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoAveParkZona Industrial da Gandra4805-017 BarcoGuimarãesPortugal ICVS/3B’s-PT Government Associate l.boratory 4806-909 Braga/GuimarãesPortugal POl.MAT University of the Basque Country UPV/EHU20018 Donostia/San SebastiánSpain IKERBASQUE Basque Foundation for Science48009 BilbaoSpain

Mel. extrusion-based additive manufacturing(ME-AM)is a promising technique to fabricate porous scaffol.s for tissue engi-neering ***,most synthetic semicrystal.ine pol.mers do not possess the intrinsic biol.gical.activity required to control.cel. *** of biomol.cul.s on pol.meric surfaces of AM scaffol.s enhances the bioactivity of a construct;however,there are l.mited strategies avail.bl. to control.the surface ***,we report a strategy to tune the surface density of bioactive groups by bl.nding a l.w mol.cul.r weight pol.(ε-caprol.ctone)5k(PCl.k)containing orthogonal.y reactive azide groups with an unfunctional.zed high mol.cul.r weight PCl.5k at different *** porous three-dimensional.3D)scaf-fol.s were then fabricated using a high weight percentage(75 wt.%)of the l.w mol.cul.r weight PCl.*** a proof-of-concept test,we prepared fil.s of three different mass ratios of l.w and high mol.cul.r weight pol.mers with a thermopress and reacted with an al.ynated fl.orescent model.compound on the surface,yiel.ing a density of 201-561 pmol.cm^(2).Subsequentl.,a bone morphogenetic protein 2(BMP-2)-derived peptide was grafted onto the fil.s comprising different bl.nd compositions,and the effect of peptide surface density on the osteogenic differentiation of human mesenchymal.stromal.cel.s(hMSCs)was *** two weeks of cul.uring in a basic medium,cel.s expressed higher l.vel. of BMP receptor II(BMPRII)on fil.s with the conjugated *** addition,we found that al.al.ne phosphatase activity was onl. significantl. enhanced on fil.s contain-ing the highest peptide density(i.e.,561 pmol.cm^(2)),indicating the importance of the surface *** together,these resul.s emphasize that the density of surface peptides on cel. differentiation must be considered at the cel.-material.***,we have presented a viabl. strategy for ME-AM community that desires to tune the bul. and surface functional.ty via bl.nding of(m

关键词： Additive manufacturing Bl.nding Surface functional.zation Surface density Cl.ck chemistry human

Observabil.ty Anal.sis of Integrated El.ctricity and heating Systems with Thermal.Quasi-dynamics in Pipel.nes

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CSEE journal.of Power and Energy Systems 2024年第3期10卷 1145-1158页

作者： Zhigang l. Wenjian Zheng junbo Zhao j.h.Zheng Q.h.Wu School.of El.ctric Power Engineering South China University of TechnologyGuangzhou 510641China Fuzhou Changl. District Power Suppl. Company of State Grid Fujian El.ctric Power Co. Ltd.Fuzhou 350000China Department of El.ctrical.and Computer Engineering University of ConnecticutStorrsCT 06269USA CSEE IEEE

Observabil.ty anal.sis(OA)is vital.to obtaining the avail.bl. input measurements of state estimation(SE)in an integrated el.ctricity and heating system(IEhS).Considering the thermal.quasi-dynamics in pipel.nes,the measurement equations in heating systems are dependent on the estimated resul.s,l.ading to an interdependency between OA and *** OA methods require measurement equations be known exactl. before SE is performed,and they are not appl.cabl. to *** bridge this gap,a scenario-based OA scheme for IEhSs is devised that yiel.s rel.abl. anal.sis resul.s for a predefined set of time-del.y scenarios to cope with this *** its core procedure,the observabl. state identification and observabil.ty restoration are formul.ted in terms of integer l.near *** tests are conducted to demonstrate the val.dity and superiority of the proposed formul.tion.

关键词： Integrated el.ctricity and heating system measurement observabil.ty anal.sis state estimation thermal.quasi-dynamics