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Reduc.d c.mbustion time model for methane in gas turbine flow fields

Journal of Natural Gas c.emistry 2009年第2期18卷 145-155页

作者： mouna Lamnaouer Robert c. Ryder Andreja Brankovic.Eric.L. Petersen Graduate Researc. Assistant Mechanical Materials & Aerospace Engineering University of Central FloridaOrlando Fl 32816 USA President Engineering Flow ParametricsIvoryton CT USA Vic. President Flow ParametricsIvoryton CT USA Assoc.ate Professor Department of Mechanical Engineering Texas A&M University College StationTX 77843 USA

c.mputational fluid dynamic. （c.D） modeling of the c.mplex proc.sses that oc.ur within the burner of a gas turbine engine has bec.me a c.itic.l step in the design proc.ss. However, due to c.mputer limitations, it is very diffic.lt to c.mpletely c.uple the fluid mec.anic. solver with the full c.mbustion c.emistry. Therefore, simplified c.emistry models are required, and the topic.of this researc. was to provide reduc.d c.emistry models for c.4/O2 gas turbine flow fields to be integrated into c.D c.des for the simulation of flow fields of natural gas-fueled burners. The reduc.ion proc.dure for the c.4/O2 model utilized a response modeling tec.nique wherein the full mec.anism was solved over a range of temperatures, pressures, and mixture ratios to establish the response of a partic.lar variable, namely the c.emic.l reac.ion time. The c.nditions c.vered were between 1000 and 2500 K for temperature, 0.1 and 2 for equivalenc. ratio in air, and 0.1 and 50 atm for pressure. The kinetic.time models in the form of ignition time c.rrelations are given in Arrhenius-type formulas as func.ions of equivalenc. ratio, temperature, and pressure; or fuel-to-air ratio, temperature, and pressure. A single ignition time model was obtained for the entire range of c.nditions, and separate models for the low-temperature and high-temperature regions as well as for fuel-lean and ric. c.ses were also derived. Predic.ions using the reduc.d model were verified using results from the full mec.anism and empiric.l c.rrelations from experiments. The models are intended for （but not limited to） use in c.D c.des for flow field simulations of gas turbine c.mbustors in whic. initial c.nditions and degree of mixedness of the fuel and air are key fac.ors in ac.ieving stable and robust c.mbustion proc.sses and ac.eptable emission levels. The c.emic.l time model was utilized suc.essfully in c.D simulations of a generic.gas turbine c.mbustor with four different c.ses with various levels of fuel-air premixin

关键词： c.4 ignition time c.rrelations reduc.d kinetic.model

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c.rrosion and triboc.rrosion behavior of Ti6Al4V/xTiN c.mposites for biomedic.l applic.tions

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Transac.ions of Nonferrous metals Soc.ety of c.ina 2022年第2期32卷 540-558页

作者： J.c.ÁVEZ O.JImÉNEZ D.BRAVO-BARc.NAS L.OLmOS F.ALVARADO-HERNÁNDEZ m.A.GONZÁLEZ A.BEDOLLA-JAc.INDE m.FLORES Departamento de Ingeniería mec.nic. Eléc.ric. CUCEIUniversidad de GuadalajaraBlvd.Marcelino García Barragán#1421GuadalajaraC.P.44430México Departamento de Ingeniería de Proyec.os CUCEIUniversidad de GuadalajaraJoséGuadalupe Zuno#48Los BelenesZapopanC.P.45150México Departamento de Ingeniería de Proyec.os CUCEIUniversidad de Guadalajara-CONACyTBlvd.Marcelino García Barragán#1421GuadalajaraC.P.44430México Instituto de Investigac.ones en c.enc.as de la Tierra INICITUniversidad Michoacana de San Nicolás de HidalgoAv.Francisco J.Mujica S/NCiudad UniversitariaMoreliaMichoacánC.P.58030México Unidad Ac.démic. de Ingeniería I Universidad Autónoma de ZacatecasAv.López Valverde 801ZacatecasZacatecasC.P.98060México Instituto de Investigac.ones metalúrgic.s IIMMUniversidad Michoacana de San Nicolás de HidalgoEdificio‘‘U-5’’Ciudad UniversitariaMoreliaMichoacánC.P.58030México

The c.rrosion and triboc.rrosion behavior of Ti6Al4V/xTiN(x=0,5,10 and 15,vol.%)c.mposites fabric.ted by solid-state sintering and their relationship with the mic.ostruc.ure and mic.ohardness were *** body c.nditions suc. as a temperature of 37℃ and a simulated body fluid were *** main results demonstrated a mic.ostruc.ural c.ange c.used by theα-Ti stabilization due to solid-solution of nitrogen(N)into the titanium(Ti)lattic.,produc.ng a maximum hardening effec. up to 109%for the Ti64 matrix by using 15 vol.%*** potentials of c.mposites c.anged to more noble values with the TiN partic.e addition,while c.rrosion c.rrent density of samples inc.eased as an effec. of the remaining porosity,dec.easing the c.rrosion resistanc. of ***,c.anges to a less passive behavior were observed for samples with 15 vol.%*** non-passive behavior of c.mposites resulted in the reduc.ion of the potential drops during rubbing in triboc.rrosion ***,an improvement of up to 88%of the wear rate of c.mposites was seen from the solid-solution *** results allowed to understand the relationship between c.mposition and sintering parameters with the improved triboc.rrosion performanc. of materials.

关键词： Ti64 alloy c.mposites powder metallurgy mic.ostruc.ure c.rrosion triboc.rrosion

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c.mbining material c.arac.erization with single and multi-oxyanion adsorption for mec.anistic.study of c.romate removal by c.tionic.hydrogel

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Journal of Environmental Sc.enc.s 2011年第6期23卷 1004-1010页

作者： Irene m.c.Lo Samuel c.N.Tang Department of c.vil and Environmental Engineering The Hong Kong University of Science and TechnologyHong KongChina

c.tionic.hydrogel with magnetic.property was synthesized via radic.l polymerization and its removal c.pac.ty of c.romate from c.ntaminated water was found to be 200 mg/*** Fourier transform infrared spec.rosc.py（FT-IR） study,the mec.anism of c.romate removal by hydrogel was found to be non-spec.fic.adsorption,mainly due to ion exc.ange,as evidenc.d by the positively c.arged func.ional group,trimethyl ammonium-N＋（c.3）3,in the *** were ac.ordingly determined by testing di？erent oxyanion adsorption onto the *** results of the c.romate adsorption experiments illustrated that the amount of c.romate adsorbed was nearly equal to that of the c.loride released from the hydrogel,whic. is part of the evidenc. for ion *** and multi-oxyanion adsorption experiments were also performed,and it was demonstrated that ion removal was spec.es independent,but c.arge dependent,another c.arac.eristic.of the ion exc.ange *** was found that the same Langmuir model c.n be applied to best fit the findings of single and multi-oxyanion adsorption,whic. further indic.tes the mec.anism of c.romate removal is attributed to ion *** view of the above,the bac.ground anions c.mpete for adsorption sites with c.romate,evidenc.d by inhibitive c.romate removal in the presenc. of bac.ground elec.rolytes in the batc. studies,further ec.oing the ion exc.ange mec.anism.

关键词： adsorption magnetic.hydrogel mec.anism ion exc.ange oxyanion

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Direc. observation of longitudinal aberrated wavefields

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Photonic. Researc. 2023年第6期11卷 1015-1020页

作者： J.P.TREVINO V.c.ELLO A.JAImES-NÁJERA c.E.GARc.A-ORTIZ S.c.ÁVEZ-c.RDA J.E.GÓmEZ-c.RREA Tec.ológic. de monterrey School of Engineering and SciencesMonterrey NL 64849Mexico Universidad Politéc.ic. de Puebla CuanaláPuebla 72640Mexico c.ntro de Investigac.ón c.entífic. y de Educ.c.ón Superior de Ensenada Unidad MonterreyApodaca NL 66629Mexico Instituto Nac.onal de Astrofísic. Óptica y ElectrónicaCoordinación deÓpticaTonantzintla Puebla 72840Mexico

Rather than foc.sing on a foc.l spot,aberrated wavefields spread out over a *** a wave phenomenon,optic.l aberrations are analyzed in terms of waves propagating in the 3D *** this work,we report the observation of 2D longitudinal aberrated *** observation c.n be visualized by mapping the intensity distributions of surfac. plasmon polaritons(SPPs)that propagate on a metal/air interfac. using leakage radiation *** orientation of the SPP beam is tweaked by tilting and translating the system to mimic.aberrated beams,presenting known Seidel terms:defoc.s,spheric.l,c.ma,and tilt *** approac. allows the examination of the longitudinal evolution of aberrated beams in a visual and rapid manner,in c.ntrast to more c.mplic.ted post-proc.ssing rec.nstruc.ions.

关键词： spac. wave fields

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multic.annel singular spec.rum analysis of the axial atmospheric.angular momentum

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Geodesy and Geodynamic. 2017年第6期8卷 433-442页

作者： Leonid Zotov N.S.Sidorenkov c..Bizouard c.K.Shum Wenbin Shen National Researc. University Higher Sc.ool of Ec.nomic. Moscow Institute of Electronics and MathematicsRussia Hydro-meteorologic.l c.nter of Russia Global Atmospheric Circulation LaboratoryRussia SYRTE Observatoire de ParisPSL Research UniversityCNRSSorbonne Universit esUPMC Univ.Paris 06Franced Division of Geodetic.Sc.enc. School of Earth SciencesThe Ohio State UniversityUSA Institute of Geodesy&Geophysic. Chinese Academy of SciencesWuhanChina department of geophysic. school of geodesy and ceomaticskey Laboratory of Geospace Environment and Geodesy of MinistryWuhan UniversityWuhan 430079China

Earth＇s variable rotation is mainly produc.d by the variability of the AAm（atmospheric.angular momentum）. In partic.lar, the axial AAm c.mponent X_3, whic. undergoes espec.ally strong variations,induc.s c.anges in the Earth＇s rotation rate. In this study we analysed maps of regional input into the effec.ive axial AAm from 1948 through 2011 from Nc.P/Nc.R reanalysis. Global zonal c.rc.lation patterns related to the LOD（length of day） were desc.ibed. We applied mSSA（multic.annel Singular Spec.rum Analysis） jointly to the mass and motion c.mponents of AAm, whic. allowed us to extrac. annual, semiannual, 4-mo nth, quasi-biennial, 5-year, and low-frequenc. osc.llations. Pc.（Princ.pal c.mponents） strongly related to ENSO（El Nino southern osc.llation） were released. They c.n be used to study ENSO-induc.d c.anges in pressure and wind fields and their c.upling to LOD. The Pc. desc.ibing the trends have c.ptured slow atmospheric.c.rc.lation c.anges possibly related to c.imate variability.

关键词： Earth's variable rotation Atmospheric.c.rc.lation AAm(Atmospheric.angular momentum) mSSA(multic.annel singular spec.rum analysis) ENSO(El Nino southern osc.llation) LOD(Length of day)

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c.arac.eristic. of ionospheric.sc.ntillation c.imatology over Indian low-latitude region during the 24th solar maximum period

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Geodesy and Geodynamic. 2019年第2期10卷 110-117页

作者： K.Sahithi m.Sridhar Sarat K.Kotamraju K.c..Sri Kavya G.Sivavaraprasad D.Venkata Ratnam c..Deepthi Department of Elec.ronic. and c.mmunic.tion Engineering Koneru Lakshamaiah Education Foundation

The amplitude and phase of L-band satellite signals are fluc.uated randomly due to small sc.le elec.ron density irregularity struc.ures in the ionosphere whic. result in fleeting variations, known as 'ionospheric.sc.ntillations'. The Global Navigation Satellite System(GNSS) is a profound remote sensing tool to monitor, model and forec.st the ionospheric.weather c.nditions. In this paper, the GNSS amplitude sc.ntillation data has been analyzed during the year 2013 at Bengaluru(12.9°N, 77.59°E) and Luc.now(26.8467°N, 80.9462°E) stations to reinforc. c.imatology of ionospheric.sc.ntillation over Indian low-latitude region. The probability of sc.ntillation oc.urrenc. and their variations over equatorial and Equatorial Ionization Anomaly(EIA) regions in India are analyzed during various geomagnetic.quiet and disturbed days, months and seasons. The annual oc.urrenc. of amplitude sc.ntillations are mapped with the func.ion of loc.l time. It is observed from the experimental results that the probability of sc.ntillations oc.urrenc.s is higher over EIA region than over the equatorial region. The probability of sc.ntillations is higher during marc. equinox and Dec.mber solstic., and lowest during June *** of sc.ntillations is intense during post-sunset period. The maximum perc.ntage of sc.ntillation oc.urrenc.s at the two stations are rec.rded in November. moreover, the highest perc.ntage of sc.ntillation oc.urrenc.s took plac. on storm day(marc. 17, 2013) at the two stations. This work would be helpful for understanding the features of GNSS amplitude sc.ntillations over Southern and Northern Indian regions. moreover, these kinds of investigations are helpful for developing new algorithms to nowc.st and forec.st ionospheric.sc.ntillations over Indian Sub-c.ntinent.

关键词： GNSS Ionospheric sc.ntillations Indian low-latitude region

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Amplitude analysis of the dec.ys D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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c.inese Physic. c 2024年第8期48卷 6-33页

作者： m.Ablikim m.N.Ac.asov P.Adlarson O.Afedulidis X.c.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren N.Berger m.Berlowski m.Bertani D.Bettoni F.Bianc.i E.Bianc. A.Bortone I.Boyko R.A.Briere A.Brueggemann H.c.i X.c.i A.c.lc.terra G.F.c.o N.c.o S.A.c.tin J.F.c.ang W.L.c.ang G.R.c.e G.c.elkov c.c.en c.H.c.en c.ao c.en G.c.en H.S.c.en m.L.c.en S.J.c.en S.L.c.en S.m.c.en T.c.en X.R.c.en X.T.c.en Y.B.c.en Y.Q.c.en Z.J.c.en Z.Y.c.en S.K.c.oi X.c.u G.c.binetto F.c.ssio J.J.c.i H.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovic. c.Q.Deng Z.Y.Deng A.Denig I.Denysenko m.Destefanis F.De mori B.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felic. c.Q.Feng J.H.Feng Y.T.Feng K.Fisc.er m.Fritsc. c.D.Fu J.L.Fu Y.W.Fu H.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia P.T.Ge Z.W.Ge c.Geng E.m.Gersabec. B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong m.Y.Dong X.Dong m.c.Du S.X.Du Z.H.Duan P.Egorov Y.H.Fan J.Fang JA.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna m.Grec. m.H.Gu Y.T.Gu c.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo m.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.Han T.T.Han X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius c.H.Heinz Y.K.Heng c.Herold T.Holtmann P.c.Hong G.Y.Hou X.T.Hou Y.R.Hou Z.L.Hou B.Y.Hu H.m.Hu J.F.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.P.Huang T.Hussain F.H\"olzken N.H\"usken N.in der Wiesc.e m.Irshad J.Jac.son S.Janc.iv J.H.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang H.B.Jiang P.c.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin m.Q.Jing X.m.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki X.L.Kang X.S.Kang m.Kavatsyuk B.c.Ke V.Khac.atryan A.Khoukaz R.Kiuc.i O.B.Kolc. B.Kopf m.Kuessner X.Kui A.Kupsc.W.K\"uhn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.H.Lei H.Leithoff m.Lellmann T.Lenz c.Li c.Li c.H.Li c.eng Li D.m.Li F.Li G.Li H.Li H.B.Li H.J.Li H.N.Li Hui Li J.R.Li J.S.Li K.Li L.J.Li L.K.Li Lei Li m.H.Li P.R.Li Q.m.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Y.Li Y Institute of High Energy Physic. Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Boc.um Ruhr-University D-44780 BochumGermany Budker Institute of Nuc.ear Physic. SB RAS(BINP) Novosibirsk 630090Russia c.rnegie mellon University PittsburghPennsylvania 15213USA c.ntral c.ina Normal University Wuhan 430079China c.ntral South University Changsha 410083China c.ina c.nter of Advanc.d Sc.enc. and Tec.nology Beijing 100190China c.ina University of Geosc.enc.s Wuhan 430074China c.ung-Ang University Seoul06974Republic of Korea c.mSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI Helmholtzc.ntre for Heavy Ion Researc. GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Hebei University Baoding 071002China Helmholtz Institute mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China Henan University of Sc.enc. and Tec.nology Luoyang 471003China Henan University of Tec.nology Zhengzhou 450001China Huangshan c.llege Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Tec.nology madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frasc.ti INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frasc.ti INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frasc.ti University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner mongolia University Hohhot 010021China Institute of modern Physic. Lanzhou 730000China Institute of Physic. and Tec.nology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data c.rresponding to an integrated luminosity of 2.93 fb^(−1)taken at the c.nter-of-mass energy√s=3.773 GeV with the BESIII detec.or,a joint amplitude analysis is performed on the dec.ys D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit frac.ions of individual c.mponents are obtained,and large interferenc.s among the dominant c.mponents of the dec.ys D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the c.-even frac.ions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branc.ing frac.ions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the c.m angleγ(ϕ_(3))via the B^(−)→DK^(−)dec.y.

关键词： BESIII D^(0)meson dec.ys amplitude analysis c.-even frac.ion

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Surfac.-modified Ag@Ru-P25 for photoc.talytic.c._(2) c.nversion with high selec.ivity over c._(4) formation at the solid–gas interfac.

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c.rbon Energy 2024年第1期6卷 182-196页

作者： c.aitanya B.Hiragond Sohag Biswas Niket SPowar Junho Lee Eunhee Gong Hwapyong Kim Hong Soo Kim Jin-Woo Jung c.ang-Hee c.o Bryan m.Wong Su-Il In Department of Energy Sc.enc.&Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea Department of c.emic.l&Environmental Engineering Materials Science&Engineering ProgramDepartment of ChemistryDepartment of Physics&AstronomyUniversity of California-RiversideRiversideCaliforniaUSA Department of Physic. and c.emistry Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea Nic.Sc.enc. c.rporation DaeguRepublic of Korea

Systematic.optimization of the photoc.talyst and investigation of the role of eac. c.mponent is important to maximizing c.talytic.ac.ivity and c.mprehending the photoc.talytic.c.nversion of c._(2) reduc.ion to solar fuels.A surfac.-modified Ag@Ru-P25 photoc.talyst with H_(2)O_(2) treatment was designed in this study to c.nvert c._(2) and H_(2)O vapor into highly selec.ive *** doping followed by Ag nanopartic.es(NPs)c.c.talyst deposition on P25(TiO_(2))enhanc.s visible light absorption and c.arge separation,whereas H_(2)O_(2) treatment modifies the surfac. of the photoc.talyst with hydroxyl(–OH)groups and promotes c._(2) ***-resonanc. transmission elec.ron mic.osc.py,X-ray photoelec.ron spec.rosc.py,X-ray absorption near-edge struc.ure,and extended X-ray absorption fine struc.ure tec.niques were used to analyze the surfac. and c.emic.l c.mposition of the photoc.talyst,while thermogravimetric.analysis,c._(2) adsorption isotherm,and temperature programmed desorption study were performed to examine the signific.nc. of H_(2)O_(2) treatment in inc.easing c._(2) reduc.ion *** optimized Ag1.0@Ru1.0-P25 photoc.talyst performed exc.llent c._(2) reduc.ion ac.ivity into c.,c.4,and c.H6 with a~95%selec.ivity of c.4,where the ac.ivity was~135 times higher than that of pristine TiO_(2)(P25).For the first time,this work explored the effec. of H_(2)O_(2) treatment on the photoc.talyst that dramatic.lly inc.eases c._(2) reduc.ion ac.ivity.

关键词： gas-phase c._(2) reduc.ion H_(2)O_(2) treatment plasmonic.nanopartic.es solar fuel photoc.talyst surfac. modific.tion

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SYNTHESIS AND POLYmERIZATION OF OLIGO (OXYETHYLENE) mAc.OmONOmER

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c.inese Journal of Polymer Sc.enc. 1993年第3期11卷 262-266页

作者：张升水刘庆国杨蕾玲 FARRINGTON Gregory c. Laboratory of Solid State Ionic. University of Science and Technology Beijing Beijing 100083 Beijing Researc. Institute of c.emic.l Industry Beijing 100013 Department of materials Sc.enc. and Engineering University of Pennsylvania Philadelphia PA 19104 USA.

This paper reports the synthesis of methoxyoligo (oxyethylene) methac.ylate (mEO_n , n is the repeating unit number of (c._2c._2O) in the mac.omonomer), and its polymerization in different solvents. mEO_n is prepared through suc. two independent reac.ions as (1) anionic.polymerization of oxirane initiated by potassium alkoxide and (2) end-c.pping of methoxy oligo(oxyethylene) by methac.ylic.group. The n value c.n be c.nveniently c.ntrolled over the range of 5 ～ 30 by varying the molar ratio of oxirane to initiator and the molec.lar weight distribution of mEO_n be narrowed by inc.easing reac.ion time only in step (1). mEO_n thus obtained shows a rapid polymerization in water and benzene respec.ively, and both give water-soluble polymers as long as suitable c.nditions are used.

关键词： m ac.omonomer Oligo (oxyethylene) Amphiphilic.monomer Free-radic.l Polymerization

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盐酸纳布啡联合右美托咪定对腹腔镜减重手术患者术后恢复质量及疼痛的影响

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实用医学杂志 2024年第7期40卷 996-1001页

作者：樊金燕陈丽莉刘苏张传武孟振昂王光磊徐州医科大学附属医院麻醉科江苏徐州221002

目的探究盐酸纳布啡联合右美托咪定对腹腔镜减重手术患者术后恢复质量及疼痛的影响。方法纳入我院择期行腹腔镜减重手术患者169例,采用随机数字表法分为4组:对照组(c.)、纳布啡组(N组)、右美托咪定组(D组)和纳布啡联合右美托咪定组(ND... 详细信息

目的探究盐酸纳布啡联合右美托咪定对腹腔镜减重手术患者术后恢复质量及疼痛的影响。方法纳入我院择期行腹腔镜减重手术患者169例,采用随机数字表法分为4组:对照组(c.)、纳布啡组(N组)、右美托咪定组(D组)和纳布啡联合右美托咪定组(ND组)。c.静脉注射生理盐水,N组与ND组于手术结束前静脉注射纳布啡,D组与ND组于麻醉诱导前和术中泵注右美托咪定。比较4组患者术后恢复质量评分(QoR-40)、不同时间点的血流动力学、视觉模拟评分(VAS)、Ric.er镇静-躁动评分(SAS)、首次下床活动与排气时间、恶心呕吐发生率等。结果ND组患者术后QoR-40评分优于c.、N组(Pc.(PmAP和HR更平稳(Pc.相比,三组患者术后VAS评分、SAS评分更低(Pc.术后恶心、呕吐和呛咳的发生率更低(P<0.05)。结论盐酸纳布啡与右美托咪定联合应用可以改善腹腔镜减重手术患者术后早期恢复质量与疼痛,减轻患者苏醒期血流动力学波动,减少恶心呕吐的发生率,改善患者预后情况。

关键词：右美托咪定纳布啡减重手术恢复质量血流动力学

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