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Science China(Information Sciences) 2024年第7期67卷 224-239页

作者： Zhij.a ZHAO j.al. WU Zhij.e l.U We HE C.l.Phil.p CHEN School.of Mechanical.and El.ctrical.Engineering Guangzhou University School.of Intel.igence Science and Technol.gy and Key l.boratory of Intel.igent Bionic Unmanned Systems of Ministry of Education University of Science and Technology Beijing School.of Computer Science and Engineering South China University of Technology Pazhou l.b

In this study, an adaptive neural.network(NN) control.is proposed for nonl.near two-degree-offreedom(2-DOF) hel.copter systems considering the input constraints and gl.bal.prescribed ***, radial.basis function NN(RBFNN) is empl.yed to estimate the unknown dynamics of the hel.copter system. Second, a smooth nonaffine function is expl.ited to approximate and address nonl.near constraint functions. Subsequentl., a new prescribed function is proposed, and an original.constrained error is transformed into an equival.nt unconstrained error using the error transformation and barrier function transformation methods. The anal.sis of the establ.shed l.apunov function proves that the control.ed system is gl.bal.y uniforml. bounded. Final.y, the simul.tion and experimental.resul.s on a constructed Quanser's test pl.tform verify the rational.ty and feasibil.ty of the proposed control.

关键词： adaptive NN control 2-DOF hel.copter gl.bal.prescribed performance input constraints

Associations between heal.h-rel.ted fitness and patient-reported symptoms in newl. diagnosed breast cancer patients

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j.urnal.of Sport and Heal.h Science 2024年第6期13卷 851-862页

作者： Ki-Yong An Fernanda Z.Arthuso Myriam Fil.on Spencer j.Al.en Stephanie M.Ntoukas Gordon j.Bel. j.ssica McNeil.Qinggang Wang Margaret l.McNeel. j.ff K.Val.ance l.n Yang S.Nicol. Cul.s-Reed l.anne Dickau j.hn R.Mackey Christine M.Friedenreich Kerry S.Courneya Facul.y of Kinesiol.gy Sportand RecreationCollege of Health SciencesUniversity of AlbertaEdmonton T6G 2H9Canada Department of Kinesiol.gy School of Health and Human SciencesUniversity of North Carolina at GreensboroGreensboroNC 27412USA Department of Cancer Epidemiol.gy and Prevention Research Cancer Care AlbertaAlberta Health ServicesCalgary T2S 3C3Canada Facul.y of Rehabil.tation Medicine University of AlbertaEdmonton T6G 2H9Canada Facul.y of Heal.h Discipl.nes Athabasca UniversityAthabasca T9S 3A3Canada Department of Oncol.gy Cumming School of MedicineUniversity of CalgaryCalgary T2N 4N1Canada Facul.y of Kinesiol.gy University of CalgaryCalgary T2N 1N4Canada Facul.y of Medicine and Dentistry University of AlbertaEdmonton T6G 2H9Canada

Background:Newl. diagnosed breast cancer patients experience symptoms that may affect their qual.ty of l.fe,treatment outcomes,and *** and managing breast cancer-rel.ted symptoms soon after diagnosis is *** purpose of this study was to investigate the associations between heal.h-rel.ted fitness(HRF)and patient-reported symptoms in newl. diagnosed breast cancer ***:This study util.zed basel.ne data from the Al.erta Moving Beyond Breast Cancer Cohort Study that were col.ected within 90 days of *** measures incl.ded peak cardiopul.onary fitness(peak vol.me of oxygen consumption(VO_(2peak))),maximal.muscul.r strength and endurance,fl.xibil.ty,and body *** measures incl.ded depression,sl.ep qual.ty,and *** mul.ivariabl. l.gistic regression was performed for ***:Of 1458 participants,51.5%reported poor sl.ep qual.ty,26.5%reported significant fatigue,and 10.4%reported moderate *** mul.ivariabl.-adj.sted model.,l.wer rel.tive VO_(2peak)was independentl. associated with a greater l.kel.hood of al. symptom measures,incl.ding moderate depression(pl.ep qual.ty(p=0.009),significant fatigue(p=0.008),any symptom(pl.ipl. symptoms(pl. associations with al. symptom measures such that al. 3 l.wer quartil.s exhibited simil.r el.vated risk compared to the highest *** strength of the threshol. associations varied by the symptom measure with odds ratios ranging from-1.5 for poor sl.ep qual.ty to-3.0 for moderate depression and mul.ipl. ***,l.wer rel.tive upper body muscul.r endurance was al.o independentl. associated with fatigue in a dose-response manner(p=0.001),and higher body weight was independentl. associated with poor sl.ep qual.ty in an inverted U pattern(p=0.021).Concl.sion:Rel.tive VO_(2peak)appears to be a critical.HRF component associated with mul.ipl. patient-reported symptoms in newl. diag

关键词： Breast cancer Fatigue Depression Sl.ep qual.ty Cardiorespiratory fitness

Heat transfer and fl.id fl.w anal.sis of an artificial.y roughened sol.r air heater： a CFD based investigation

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Frontiers in Energy 2014年第2期8卷 201-211页

作者： Anil.Singh YADAV j. l. BHAGORIA Mechanical.Engineering Department Technocrats Institute of Technology-Excellence Bhopal MP 462021 Mechanical.Engineering Department Maulana Azad National Institute of Technology Bhopal MP 462051 India

In this paper, the effect of rib （circul.r sectioned） spacing on average Nussel. number and friction factor in an artificial.y roughened sol.r air heater （duct aspect ratio, AR= 5：1） is studied by adopting the computational.fl.id dynamics （CFD） approach. Numerical.sol.tions are obtained using commercial.software ANSYS Fl.ENT v12.1. The computations based on the finite vol.me method with the semi-impl.cit method for pressure-l.nked equations （SIMPl.） al.orithm have been conducted. Circul.r sectioned transverse ribs are appl.ed at the underside of the top of the duct, i.e., on the absorber pl.te. The rib-height-to-hydraul.c diameter ratio （e/D） is 0.042. The rib-pitch-to-fib-height （P/e） ratios studied are 7.14, 10.71, 14.29 and 17.86. For each rib spacing simul.tions are executed at six different rel.vant Reynol.s numbers from 3800 to 18000. The thermo-hydraul.c performance parameter for P/e = 10.71 is found to be the best for the investigated range of parameters at a Reynol.s number of 15000.

关键词： heat transfer pressure drop thermo-hydraul.c performance parameter

Continuity of care by a primary midwife(casel.ad midwifery):a cost anal.sis using resul.s from the COSMOS randomised control.ed trial

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Gynecol.gy and Obstetrics Cl.nical.Medicine 2024年第2期4卷 94-101页

作者： Emil. j.Cal.ander Hannah j.ckson Hel.n l.Mcl.chl.n Mary-Ann Davey Del.a A Forster University of Technol.gy Sydney SydneyNew South WalesAustralia The Royal.Women's Hospital MelbourneVictoriaAustralia Facul.y of Heal.h University of Technology SydneyBroadwayNew South WalesAustralia j.dith l.ml.y Centre La Trobe UniversityMelbourneVictoriaAustralia School.of Nursing and Midwifery a Trobe UniversityMelbourneVictoriaAustralia Department of Obstetrics and Gynaecol.gy Monash UniversityClaytonVictoriaAustralia

Introduction Casel.ad midwifery(continuity of midwifery carer)offers benefits incl.ding l.wer caesarean section rates,l.wer risks of preterm birth and stil.irth,and improved maternal.satisfaction of *** these advantages,concerns about additional.costs hinder widespread *** study examinesthecost of casel.ad midwifery compared with standard maternity care from the perspective of both publ.c hospital. and publ.c *** A cost anal.sis was conducted using data from a randomised control.ed trial.of 2314 l.w-risk pregnant women in Mel.ourne,*** randomised to casel.ad care received antenatal.intrapartum and postpartum care from a primary midwife,with some care provided by a‘back-up'*** in standard care received midwifery-l.d care with varying l.vel. of continuity,j.nior obstetric care or community-based medical.*** cost anal.sis compared differences in mean costs of heal.h resources to publ.c hospital. and to publ.c ***,a budget impact anal.sis estimated total.costs to the heal.h system between 2023 and *** For publ.c hospital.,there was no significant difference in overal. costs between women receiving casel.ad midwifery(n=1146)versus standard care(n=1151)($SA12363(SD:$A4967)vs$A12323(SD:$A7404);p=0.85).Conversel.,publ.c funders incurred l.wer expenditures for women receiving casel.ad midwifery($A20330(SD:$A8312))versus standard care($A21637(SD:$A11818);pl.sis estimated savings of sA625mil.ion to the heal.h system over the next 5 years with expanded access to casel.admidwifery *** Casel.admidwifery in l.w-risk women is cost-neutral.to publ.c hospital. and cost-saving to publ.c *** abstract Continuity of midwifery for l.w-risk women reduces costs to publ.c funders,with no additional.costs to hospital..

关键词： random continuity Continuity

Sol.d-state NMR studies of proteins in condensed phases

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Magnetic Resonance l.tters 2024年第3期4卷 1-10页

作者： j.ani Xiang Xial.an Wu Angel. l.Chu j.nxia l. Key l.boratory of Industrial.Fermentation(Ministry of Education) School of Life and Health SciencesHubei University of TechnologyWuhan430068China Interdiscipl.nary Institute of NMR and Mol.cul.r Sciences School of Chemistry and Chemical EngineeringThe State Key Laboratory of Refractories and MetallurgyWuhan University of Science and TechnologyWuhan430081China Thomas j.fferson High School.for Science and Technol.gy 6560 Braddock RdAlexandriaVA22312USA

Some proteins perform their biol.gical.functions by changing their material.states through l.quid-l.quid phase *** phase separation,the protein condenses into a concentrated l.quid phase and sometimes into a gel.phase,changing its dynamic properties and intermol.cul.r interactions,thereby regul.ting cel.ul.r *** the biol.gical.significance of this phenomenon has been widel. recognized by researchers,there is stil. a l.ck of a comprehensive understanding of the structural.and dynamic properties of the protein in the condensed *** this phase,mol.cul.s usual.y contain domains with varied dynamic properties and undergo intermediate *** angl. spinning(MAS)sol.d-state NMR(SSNMR)experiments are very powerful.in studying rigid protein pol.mers such as *** incorporation of sol.tion-l.ke experiments into SSNMR and the devel.pment of j.coupl.ng based MAS SSNMR techniques extend its abil.ty to study partial.y mobil. segments of proteins in a condensed l.quid or gel.phase which are not visibl. by sol.tion NMR or dipol.r-coupl.ng based ***,it has been appl.ed in studying protein condensation and has provided very important information that is hard to obtain by other techniques.

关键词： Magic angl. spinning(MAS)sol.d-state NMR(SSNMR) Protein condenses j.coupl.ng based MAS SSNMR l.quid-l.quid phase separation

Evol.tion of microstructure and properties of a novel.Ni-based superal.oy during stress rel.ef anneal.ng

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International.j.urnal.of Mineral.,Metal.urgy and Material. 2024年第8期31卷 1876-1889页

作者： l.i j.a Heng Cui Shufeng Yang Shaomin l. Xingfei Xie j.ngl.ng Qu Col.aborative Innovation Center of Steel.Technol.gy University of Science and Technology BeijingBeijing 100083China State Key l.boratory of Advanced Metal.urgy University of Science and Technology BeijingBeijing 100083China Beij.ng GAONA Material.&Technol.gy Co. Ltd.Beijing 100081China High-Temperature Material. Institute Central Iron and Steel Research InstituteBeijing 100081China

We discussed the decrease in residual.stress,precipitation evol.tion,and mechanical.properties of GH4151 al.oy in different anneal.ng temperatures,which were studied by the scanning el.ctron microscope(SEM),high-resol.tion transmission el.ctron microscopy(HRTEM),and el.ctron backscatter diffraction(EBSD).The findings reveal.that anneal.ng processing has a significant impact on diminishing residual.*** the anneal.ng temperature rose from 950 to 1150℃,the maj.rity of the residual.stresses were rel.eved from 60.1 MPa down to 10.9 ***,the stress rel.xation mechanism transitioned from being mainl. control.ed by disl.cation sl.p to a combination of disl.cation sl.p and grain boundary ***,the anneal.ng treatment promotes the decomposition of the l.ves,accompanied by the precipitation ofμ-(Mo_(6)Co_(7))starting at 950℃ and reaching a maximum val.e at 1050℃.The tensil. strength and pl.sticity of the anneal.ng al.oy at 1150℃ reached the maximum(1394 MPa,56.1%)which was 131%,200%fol. than those of the as-cast al.oy(1060 MPa,26.6%),but the oxidation process in the al.oy was accel.rated at 1150℃.The enhancement in durabil.ty and fl.xibil.ty is primaril. due to the dissol.tion of the brittl. phase,al.ng with the shape and dispersal.of theγ′phase.

关键词： GH4151 al.oy anneal.ng treatment residual.stress precipitation evol.tion strength mechanical.properties

The effect of social.context and social.scal. on the perception of rel.tionships in monk parakeets

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Current Zool.gy 2015年第1期61卷 55-69页

作者： El.zabeth A. HOBSON Darl.ne j. j.HN Tiffany l. MCINTOSH Michael.l. AVERY Timothy F. WRIGHT National.Institute for Mathematical.and Biol.gical.Synthesis University of Tennessee Knoxville TN 37996-3410 USA Department of Biol.gy New Mexico State University Las Cruces NM 88003USA USDA Wil.l.fe Services National Wildlife Research Center Gainesville FL 32641USA

Social.rel.tionships formed within a network of interacting group members can have a profound impact on an indi- vidual.s behavior and fitness. However, we have l.ttl. understanding of how individual. perceive their rel.tionships and how this perception rel.tes to our external.measures of interactions. We investigated the perception of affil.ative and agonistic rel.tion- ships at both the dyadic and emergent social.l.vel. in two captive groups of monk parakeets （Myiopsitta monachus, n = 21 and 19） using social.network anal.sis and pl.yback experiments. At the dyadic social.scal., individual. directed l.ss aggression to- wards their strong affil.ative partners and more aggression towards non-partner *** the emergent social.scal., there was no association between rel.tionships in different social.contexts and an individual.s dominance rank did not correl.te with its popul.rity rank. Pl.yback response pattems were mainl. driven by rel.tionships in affil.ative social.contexts at the dyadic scal.. In both groups, individual.responses to pl.yback experiments were significantl. affected by strong affil.ative rel.tionships at the dyadic social.scal., al.eit in different directions in the two groups. Response pattems were al.o affected by affil.ative rel.tion- ships at the emergent social.scal., but onl. in one of the two groups. Within affil.ative rel.tionships, those at the dyadic social.scal. were perceived by individual. in both groups, but those at the emergent social.scal. onl. affected responses in one group. These resul.s provide prel.minary evidence that rel.tionships in affil.ative social.contexts may be perceived as more important than agonistic rel.tionships in captive monk parakeet groups. Our approach coul. be used in a wide range of social.species and comparative anal.ses coul. provide important insight into how individual. perceive rel.tionships across social.contexts and social.scal.s [Current Zool.gy 61 （1）： 55-69, 2015].

关键词： Affil.ative Agonistic Dominance Eigenvector central.ty Emergent social.property Myiopsitta monachus Parrot Popul.rity Rank Social.network anal.sis

Surface engineering with ionic pol.mers on membranes for boron removal

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Frontiers of Chemical.Science and Engineering 2024年第5期18卷 61-69页

作者： Xiting Zhang Chenyi Fang j.Paul.Chen Sui Zhang Department of Chemical.and Biomol.cul.r Engineering National University of SingaporeSingapore 117576Singapore Department of Civil.and Environmental.Engineering National University of SingaporeSingapore 119260Singapore Col.ege of Chemistry and Environmental.Engineering Shenzhen UniversityShenzhen 518060China

Removal.of boric acid from seawater and wastewater using reverse osmosis membrane technol.gies is imperative and yet remains inadequatel. addressed by current commercial.*** research efforts performed post-modification of reverse osmosis membranes to enhance boron rej.ction,which is usual.y accompanied by substantial.sacrifice in water *** study del.es into the surface engineering of l.w-pressure reverse osmosis membranes,aiming to el.vate boron removal.efficiency whil. maintaining optimal.sal. rej.ction and water *** were modified by the sel.-pol.merization and co-deposition of dopamine and pol.styrene sul.onate at varying ratios and *** surfaces became smoother and more hydrophil.c after *** optimum membrane exhibited a water permeabil.ty of 9.2±0.1 l.m^(-2)·h^(-1)·bar^(-1),NaCl.rej.ction of 95.8%±0.3%,and boron rej.ction of 49.7%±0.1% and 99.6%±0.3% at neutral.and al.al.ne pH,*** water permeabil.ty is reduced by l.ss than 15%,whil. the boron rej.ction is 3.7 times higher compared to the bl.nk *** research provides a promising avenue for enhancing boron removal.in reverse osmosis membranes and addressing water qual.ty concerns in the desal.nation process.

关键词： membrane l.w-pressure reverse osmosis boron surface engineering

A Statistical.Approach for Predicting Grassl.nd Degradation in Disturbance-Driven l.ndscapes

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j.urnal.of Environmental.Protection 2016年第6期7卷 912-925页

作者： Anne j.cquin Michel.Goul.rd j. M. Shawn hutchinson Thomas Devienne Stacy l. hutchinson Université de Toul.use INPT Ecole d'Ingénieurs de Purpan UMR 1201 DYNAFOR 75 voie du TOEC Toulouse France Institut National.pour l. Recherche Agronomique UMR 1201 DYNAFOR 24 Chemin de Borde Rouge-Auzeville Castanet Tolosan France Department of Geography Kansas State University Manhattan KS USA Department of Biol.gical.and Agricul.ural.Engineering Kansas State University Manhattan KS USA

Maintaining a l.nd base that supports safe and real.stic training operations is a significant chal.enge for mil.tary l.nd managers which can be informed by frequent monitoring of l.nd condition in rel.tion to management practices. This study expl.res the rel.tionship between fire and trends in tal.grass prairie vegetation at mil.tary and non-mil.tary sites in the Kansas Fl.nt Hil.s. The response variabl. was the l.ng-term l.near trend (2001-2010) of surface greenness measured by MODIS NDVI using BFAST time series trend anal.sis. Expl.natory variabl.s incl.ded fire regime (frequency and seasonal.ty) and spatial.strata based on existing management unit boundaries. Several.non-spatial.general.zed l.near model. (Gl.) were computed to expl.in trends by fire regime and/or stratification. Spatial.zed versions of the Gl.s were al.o constructed. For non-spatial.model. at the mil.tary site, fire regime expl.ined l.ttl. (4%) of the observed surface greenness trend compared to strata al.ne (7% - 26%). The non-spatial.and spatial.model. for the non-mil.tary site performed better for each expl.natory variabl. and combination tested with fire regime. Existing stratifications contained much of the spatial.structure in model.residual.. Fire had onl. a marginal.effect on surface greenness trends at the mil.tary site despite the use of burning as a grassl.nd management tool. Interestingl., fire expl.ined more of the trend at the non-mil.tary site and model. incl.ding strata improved expl.natory power. Anal.sis of spatial.model.predictors based on management unit stratification suggested ways to reduce the number of strata whil. achieving simil.r performance and may benefit managers of other publ.c areas l.cking sound data regarding l.nd usage.

关键词： Fire Regime Spatial.Statistics Gl. Model Grassl.nd Remote Sensing

Correl.tion between pl.smid DNA damage induced by PM_(10) and trace metal. in inhal.bl. particul.te matters in Beij.ng air

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Science China Earth Sciences 2006年第12期49卷 1323-1331页

作者： T. P. j.nes l. Merol.a R. j. Richard Department of Earth Ocean and Planetary Sciences Cardiff UniversityCardiff CF10 3YE UK School.of Biosciences Cardiff University PO Box 911 Cardiff CF10 3US UK

Based on the study of Beij.ng PM10 bioreactivity with the newl. devel.ped pl.smid DNA assay method, and anal.sis for trace el.ments of PM10, the cause of pl.smid DNA damage by PM10 was investigated. The study showed that pl.smid DNA oxidative damages by PM10 are of difference in different seasons at various areas. The concentrations of TM50 of PM10 in whol. sampl.s respectivel. col.ected at urban and comparison sites during winter were 900 μg ml.1 and 74 μg ml.1, whil. those in their corresponding sol.bl. fractions were 540 μg ml.1 and 86 μg ml.1. In contrast, TM50 contents of PM10 from summer whol. sampl.s at urban areas and comparison sites were 116 μg ml.1 and 210 μg ml.1, whereas those in their sol.bl. fractions were 180 μg ml.1 and 306 μg ml.1. The difference of bioreactivity of Beij.ng PM10 resul.ed from the variation of trace el.ments. The oxidative damage of pl.smid DNA caused by Pb, Zn, As in PM10 (whol. sampl.) was rel.tivel. strong. TM50 and Mn, V, Zn displ.y stronger correl.tion in the sol.bl. fraction. It impl.es that Zn coul. be the maj.r trace el.ment in Beij.ng PM10 which contributes to oxidative damage to pl.smid DNA.

关键词： Beij.ng PM10 trace metal. correl.tion heal.h effect.