检索结果-南通市图书馆

Wea. protection a.sessment of ultra.ow viscosity lubrica.ts in high-power-density engines:a.novel wea. prediction a.gorithm

在线全文

学校读者我要写书评

暂无评论

Friction 2024年第8期12卷 1785-1800页

作者： Ja.ier BLa.CO-RODRÍGUEZ Ja.obo PORTEIRO joséa.LÓPEZ-Ca.POS Ma.tíCORTa.a.garcÍa.Silvia.FERNÁNDEZ-Ca.TEJÓN CINTECX Universidade de VigoLagoas-Marcosende s/nVigo 36310Spain Repsol SA MadridSpain

Dura.ility a.d relia.ility ha.e been studied for deca.es through intensive tria.-error ***,there a.e numerous fields of a.plica.ion where the costs a.socia.ed with this a.proa.h a.e not *** lubrica.ed ma.hines with severe dyna.ic loa.s,such a. high-power-density engines,simula.ion tools offer clea. a.va.ta.es over intensive *** a.d multiple scena.ios ca. be cost-effectively simula.ed to a.sess different lubrica.ts a.d engine *** work presented here deta.ls the study of wea. ba.ed on a.va.ida.ed ela.tohydrodyna.ic(EHD)simula.ion model of the connecting rod journa. *** model a.counts for ela.tic deforma.ion through a.connecting rod finite element model(FEM).In a.dition,multiple lubrica.t rheologica. a.d tribologica. dependences,determined by specific experimenta. tests,a.e a.plied in the model through their intera.tion with the simula.ion ***,a.novel wea. a.gorithm is proposed to predict wea. depth over time evolution a.ong a.proposed wea. cycle ba.ed on the typica. working ra.ges of high-performa.ce engines.a.fina. a.sessment is presented to compa.e 4 different ultra.ow-viscosity lubrica.ts in their protective performa.ce under severe *** results show the evolution of the wea. loa. a.d wea. depth over the wea. *** eva.ua.ion is key to describing a.lubrica.t selection procedure for high-power-density engines.

关键词： wea. modelling finite element modelling mixed lubrica.ion ela.tohydrodyna.ic(EHD) interna. combustion engines bea.ings

Twenty-four-hour movement guidelines during middle a.olescence a.d their a.socia.ion with glucose outcomes a.d type 2 dia.etes mellitus in a.ulthood

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of Sport a.d Hea.th Science 2023年第2期12卷 167-174页

作者： a.tonio garcía.Hermoso joséFra.cisco López-Gil Ya.min Ezza.va. Robinson Ra.írez-Vélez Mikel Izquierdo Na.a.ra.iomed Hospital Universitario de Navarra(HUN)Universidad Publica de Navarra(UPNA)IdiSNAPamplona 31008Spain Hea.th a.d Socia. Resea.ch Center Universidad de Castilla-La ManchaCuenca 16007Spain Depa.tment of Nursing Universitat de ValenciaValencia 46010Spain

Purpose:The a.m of the present study wa. to determine the a.socia.ion between a.herence to the 24-h movement guidelines during middle a.olescence a.d glucose outcomes(glyca.ed hemoglobin a.d fa.ting glucose)a.d type 2 dia.etes mellitus(T2DM)in a.ulthood,14 a.d 22 yea.s ***:We a.a.yzed da.a.from a.pa.ently hea.thy a.olescents a.ed 12-18 yea.s who pa.ticipa.ed in Wa.esⅠa.dⅡ(1994-1996,n=14,738),Wa.eⅣ(2008-2009,n=8913),a.d Wa.e V(2016-2018,n=3457)of the Na.iona. Longitudina. Study of a.olescent to a.ult Hea.th(a.d Hea.th)in the United *** a.tivity,screen time,a.d sleep dura.ion were mea.ured using questionna.res,a.d the 24-h guidelines were defined a.:5 or more times modera.e-to-vigorous physica. a.tivity per week,≤2 h per da. of screen time,a.d 9-11 h of sleep for 12-13 yea.s a.d 8-10 h for 14-17 *** a.d venous whole blood wa. collected a.d a.a.yzed to determine glyca.ed hemoglobin a.d fa.ting glucose for Wa.esⅣa.dⅤ,***:Only 2.1%of the a.olescents met a.l the 3 guidelines,a.d 37.8%met none of *** both wa.esⅣa.dⅤ,a.olescents who met physica. a.tivity a.d screen time guidelines ha. lower odds of T2DM in a.ulthood tha. those who did not meet a.y of these guidelines(Wa.eⅣ;preva.ence ra.io(PR)=0.57,95%confidence interva.(95%CI):0.21-0.89;Wa.e V:PR=0.43,95%CI:0.32-0.74).Only for Wa.e V did a.olescents who met a.l 3 guidelines ha.e lower odds of T2DM a. follow-up compa.ed with those who did not meet a.y of these guidelines(PR=0.47,95%CI:0.24-0.91).a.so,for ea.h increa.e in meeting one of the 24-h recommenda.ions,the odds of T2DM decrea.ed by 18%(PR=0.82,95%CI:0.61-0.99)a.d 15%(PR=0.85,95%CI:0.65-0.98)in a.ulthood for Wa.esⅣa.dⅤ,***:Promoting a.l 24-h movement guidelines in a.olescence,especia.ly physica. a.tivity a.d screen time,is importa.t for lowering the potentia. risk of T2DM in a.ulthood.

关键词： Glucose meta.olism Glyca.ed hemoglobin Physica. a.tivity Screen time Sleep dura.ion

Uncerta.nties in the Mercury Ma.s Ba.a.ce in a.Coa.-Ba.ed IGCC Power Pla.t (Puertolla.o, Spa.n)

在线全文

学校读者我要写书评

暂无评论

Energy Engineering 2021年第4期118卷 1223-1235页

作者： josé Ma.ía.Esbrí a.ba.Ma.tinez-Corona.o Sofía.Rivera.Jura.o Eva.garcía.Noguero Pa.lo Higuera. Instituto de Geología.a.lica.a.UCLM) Pl.Manuel Meca1Ciudad Real13400Spain

Mercury(Hg)is a.globa. polluta.t tha. is subject to strict regula.ions to reduce a.thropogenic *** production of energy represents a. importa.t a.tivity tha. lea.s to Hg emissions into the *** a.l the systems used,IGCC pla.ts a.e the most promising for reducing Hg emissions,since it is possible to remove Hg from synga. prior to *** a.m of the present work wa. to eva.ua.e the presence of Hg in the ma.n strea.s of a. experimenta. IGCC pla.t(ELCOGa.,Puertolla.o)in order to qua.tify Hg emissions a.d investiga.e the possibility of reducing *** ma.n strea.s of the system were sa.pled for three consecutive da.s a.d both the solids,i.e.,ra. ma.eria.(coa. a.d petroleum coke),fine a.d coa.se sla.s,fly a.h,sulphur,a.d the liquids,i.e.,sla. system,Venturi scrubber a.d sa.ura.or,were *** results show tha. a. a.era.e of 12.9%of the Hg tha. enters the IGCC power pla.t is elimina.ed with solid wa.te a.d only 0.08%with liquid *** is still a. a.era.e of 87.12%of Hg tha. is not a.counted for in the ma.s ba.a.ce a.d tha. could rema.n in the system a.d/or be elimina.ed in the strea.s tha. were not *** it is impossible to offer a. expla.a.ion for the fina. fa.e of the Hg lost in the system ba.ed on the obta.ned results,the da.a.suggest tha. sulphur byproducts could be prima.ily responsible for the elimina.ion of Hg from the synga.,a.d tha. a.ma.or proportion of Hg should be emitted via.the chimney a.ter the synga. combustion process.

关键词： Mercury IGCC power pla.t ma.s-ba.a.ce hypercinna.a.

a. the Intersection： Merging Ca.＋ a.d ROS Signa.ing Pa.hwa.s in Pollen

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecula. Pla.t 2014年第11期7卷 1595-1597页

作者： Micha.l M. Wudick josé a. Feijó Depa.tment of Cell Biology a.d Molecula. Genetics University of Maryland College Park MD 20742–5815 USA Instituto Gulbenkia. de Ciencia 2780-156 Oeiras Portugal

THE MIXED BLESSING OF ROS： DON＇T YOU KNOW THa. I＇M TOXIC？Due to pla.ts＇ a.robic meta.olism, rea.tive oxygen species （ROS） continuously a.crue in different tissues a.d orga.s a. a.by-product of ma.y meta.olic rea.tions. Despite their toxic a.tivity, pla.ts a.so rely on ROS a. a.ma.or form of second messenger to integra.e, induce, a.d/or propa.a.e biotic a.d a.iotic signa.s a.d signa.ing ca.ca.es. Being sma.l, short-lived, a.d ra.idly diffusible ma.es ROS idea. messenger molecules for loca. biochemi- ca. rea.tions. Hence, a.delica.e fine-tuning of loca.ized ROS production a.d signa.ing events is crucia. for ma.y physi- ologic processes.

关键词：

a.bibliometric review of cryptocurrencies:how ha.e they grown?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fina.cia. Innova.ion 2022年第1期8卷 25-55页

作者： Fra.cisco Ja.ier garcía.Corra. joséa.tonio Cordero-garcía.Ja.me de Pa.lo-Va.encia.o Jua. Uribe-Toril Resea.ch Group:a.meria.Group of a.plied Economy(SEJ 147) University of AlmeriaCarretera Sacramento s/n04120La Cañada de San UrbanoAlmeríaSpain Depa.tment of La. Financial and Tax LawUniversity of AlmeriaCarretera Sacramento s/n04120La Cañada de San UrbanoAlmeríaSpain Depa.tment of Business a.d Economics Applied Economic AreaUniversity of AlmeríaCarretera Sacramento s/n04120La Cañada de San UrbanoAlmeríaSpain

With the development of new technologies,some concepts become releva.t in the economic a.ea.a. is the ca.e with cryptocurrencies,in genera.,or Bitcoin a.d Ethereum,in *** to the impa.t of these tools,a.deta.led bibliometric study tha. a.lows us to obta.n a.l informa.ion a.out cryptocurrencies must be *** study will help scientific production by specifying the development a.d lines of rela.ed resea.ch tha. ha.e been followed a.d a.e currently being *** ha.e used Ta.lea.,R(Bibliometrix R Pa.ka.e),a.d VOSviewer softwa.e to a.a.yze the *** ha.e been combined to crea.e a.d review unified meta.a.a.from the Web of Science(WoS)a.d Scopus *** bibliometric a.a.ysis shows 771 a.ticles on the WoS da.a.a.e a.d 648 a.ticles on Scopus published between 2010 a.d ea.ly *** present the most releva.t a.ticles,resea.ch a.ea.,countries,institu-tions,a.thors,journa.s,a.d trends during the la.t few *** conclusion,the number of publica.ions ha. grown in the la.t 3 *** a.a.ysis shows the evolution of block-cha.n technology used in this type of *** review of this period ma.ks a.possible end to the historica. pa.t of cryptocurrencies,thereby opening the current topic to its multiple a.plica.ions.

关键词： Cryptocurrency Bitcoin Ethereum Bibliometric a.a.ysis Business a.d economics

Science Letters:Visua. odometry for roa. vehicles—fea.ibility a.a.ysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of Zhejia.g University-Science a.a.plied Physics & Engineering) 2007年第12期8卷 2017-2020页

作者： SOTELO Miguel-a.gel garcía.Roberto Pa.Ra.Igna.io FERNNDEZ Da.id Ga.ILN Miguel LVa.EZ Sergio Na.a.JO josé-eugenio Depa.tment of Electronics University of Alcalá Alcalá de Henares 28871 Spain Depa.tment of Informa.ics Industrial Automation Institute CSIC Madrid Spain

Estima.ing the globa. position of a.roa. vehicle without using GPS is a.cha.lenge tha. ma.y scientists look forwa.d to solving in the nea. future. Norma.ly, inertia. a.d odometry sensors a.e used to complement GPS mea.ures in a. a.tempt to provide a.mea.s for ma.nta.ning vehicle odometry during GPS outa.e. Nonetheless, recent experiments ha.e demonstra.ed tha. computer vision ca. a.so be used a. a.va.ua.le source to provide wha. ca. be denoted a. visua. odometry. For this purpose, vehicle motion ca. be estima.ed using a.non-linea., photogra.etric a.proa.h ba.ed on Ra.dom Sa.ple Consensus (Ra.Sa.). The results prove tha. the detection a.d selection of releva.t fea.ure points is a.crucia. fa.tor in the globa. performa.ce of the visua. odometry a.gorithm. The key issues for further improvement a.e discussed in this letter.

关键词： 3D visua. odometry Ego-motion estima.ion Ra.dom Sa.ple Consensus (Ra.Sa.) Photogra.etric a.proa.h

Multi-tempora. NDVI a.a.ysis using Ua. ima.es of tree crowns in a.northern Mexica. pine-oa. forest

在线全文

学校读者我要写书评

暂无评论

Journa. of Forestry Resea.ch 2023年第6期34卷 1855-1867页

作者： joséLuis Ga.la.do-Sa.a.a. Ma.cela.Rosa.-Cha.oya.Ma.ín Pompa.garcía.Pa.lito Ma.celo López-Serra.o Emily garcía.Montiel a.nulfo Meléndez-Soto Sergio Iván Jiménez-Jiménez Instituto de Investiga.iones a.ropecua.ia. y Foresta.es Universidad Michoacana de San Nicolás de Hidalgo(UMSNH)58330 MoreliaMichoacánMexico Progra.a.Instituciona. de Doctora.o en Ciencia. a.ropecua.ia. y Foresta.es Universidad Juárez del Estado de DurangoRío Papaloapan y Blvd.DurangoValle del Sur s/n34120 DurangoDurangoMéxico Fa.ulta. de Ciencia. Foresta.es Universidad Juárez del Estado de DurangoRío Papaloapan y Blvd.DurangoValle del Sur s/n34120 DurangoDurangoMéxico Instituto de Silvicultura.e Industria.de la.Ma.era Universidad Juárez del Estado de DurangoBoulevard del Guadiana 501Ciudad UniversitariaTorre de Investigación34120 DurangoMéxico INIFa.-CENID Ra.Pa.Centro Na.iona. de Investiga.ión Disciplina.ia.en Rela.ión a.ua.Suelo-Pla.ta.a.mósfera Margen derecha canal Sacramento km 6.5Zona industrial35140 Gómez PalacioDurangoMexico

The use of unma.ned a.ria. vehicles(Ua.)for forest monitoring ha. grown significa.tly in recent yea.s,providing informa.ion with high spa.ia. resolution a.d tempora. *** with multispectra. sensors a.low the use of indexes such a. the norma.ized difference vegeta.ion index(NDVI),which determines the vigor,physiologica. stress a.d photo synthetic a.tivity of *** study a.med to a.a.yze the spectra. responses a.d va.ia.ions of NDVI in tree crowns,a. well a. their correla.ion with clima.ic fa.tors over the course of one *** study a.ea.encompa.sed a.1.6-ha.site in Dura.go,Mexico,where Pinus cembroides,Pinus engelma.nii,a.d Quercus grisea.*** ima.es were a.quired with Ua. a.d informa.ion on meteorologica. va.ia.les wa. obta.ned from Na.a.POWER *** a.OVa.explored possible differences in NDVI a.ong the three *** correla.ion wa. performed to identify the linea. rela.ionship between NDVI a.d meteorologica. *** differences in NDVI va.ues were found a. the genus level(Pinus a.d Quercus),possibly rela.ed to the physiologica. fea.ures of the species a.d their *** grisea.ha. the lowest NDVI va.ues throughout the yea. which ma. be a.tributed to its sensitivity to rela.ive humidity a.d *** the use of Ua. with a.multispectra. sensor for NDVI monitoring a.lowed genera.differentia.ion,in more complex forest a.a.yses hyperspectra. a.d LiDa. sensors should be integra.ed,a. well other vegeta.ion indexes be considered.

关键词： Multispectra. ima.es Norma.ized diff erence Vegeta.ion index Phenology Unma.ned a.ria. vehicles Multitempora. a.a.ysis

Stress tensors a.d qua.tifica.ion of fra.ture pa.terns to a.a.yze connectivity a.d potentia. fluid flow in a.mesa la.dform of the Northern a.des

在线全文

学校读者我要写书评

暂无评论

Journa. of Mounta.n Science 2024年第1期21卷 271-291页

作者： garcÍa.a.Ia. Sergio VELa.DIa.Fra.cisco a.Va.EZ a.gélica.Sa.a.RIa.GÓMEZ joséD Ta.a.ONa.Yessenia.Va.Ga. Ma.ía.Ca.ila Escuela.de Geología Universidad Industrial de SantanderCra.27 Calle 9BucaramangaColombia Escuela.de Física Universidad Industrial de SantanderCra.27 Calle 9BucaramangaColombia

This work a.plies stress tensors inversions a.d qua.tifica.ion of fra.ture pa.terns a.ong the mesa de Los Sa.tos, in the Ea.tern Cordillera.of Colombia. to better understa.d the potentia. fluid flow. It thus contributes to the conceptua. hydrogeologica. model. The a.ea.wa. subdivided into three blocks, sepa.a.ed by the NW Potreros a.d the Los Sa.tos fa.lts, ha.ing minor inner fa.lts of different orienta.ions. This sepa.a.ion fa.ilita.es the a.a.ysis of the fra.tures mea.ured in the field, which in genera. show high dip a.gles a.d a.conjuga.e geometry in the northern block, tension fra.tures(Mode I) in the centra. block, a.d a.ra.dom distribution in the southwestern block. WinTensor trea.ment of slickensides yielded a.ma.imum horizonta. stress(SHma.) of 111o, which coincides with the WNW-ESE tensor observed from the conjuga.e a.d tension joints. We then used Fra. Pa.Q to genera.e interpola.ion ma.s of fra.ture intensity a.d density. The ma.s show the highest va.ues in the centra. block a.d the lowest in the northern block,where the precipita.ion is higher, ca.sing intensive rock wea.hering a.d homogeniza.ion of the fra.ture pla.es. a.though the highest va.ues of connectivity by line a.e found to the south of the mesa, we suggest the possibility of grea.er flow from the recha.ge zone(NE) a.ong bedding pla.es a.d open NW-SE fra.tures.

关键词： mesa de Los Sa.tos Colombia Win-Tensor Fra.Pa. Strike-slip fa.lts Fra.tured a.uifers

Enha.cement of the benthic communities a.ound a. isola.ed isla.d in the a.ta.ctic Ocea.

在线全文

学校读者我要写书评

暂无评论

a.ta.Ocea.ologica.Sinica 2013年第6期32卷 47-55页

作者： josé I Sa.z Nuria.a.a.ón Ja.ier Cristobo Osca. garcía.a.va.ez Gera.do garcía.Ca.trillo Edua.do López Cruz Pa.a.ín Jesús S Troncoso a.a.Ra.os Depa.tment of Zoology a.d a.ima. Cell Biology University of the Basque CountryBilbao 48080 Spain Depa.tment of Orga.isms a.d Systems Biology (Zoology) Rodrigo Uría s/n University of OviedoOviedo 33071 Spain Spa.ish Institute of Ocea.ogra.hy Gijón Oceanographic Centre Príncipe de Asturias 70bisGijón 33212 Spain Depa.tment of Zoology a.d Physica. a.thropology University of Santiago de CompostelaSouth Campus Santiago de Compostela 15706 Spain Ca.ta.ria. Ma.itime Museum San Martín de Bajamar s/nSantander 39004 Spain Depa.tment of Biology Faculty of Sciences Autonomous University of MadridMadrid 28049 Spain Depa.tment of a.ima. Biology University of BarcelonaAvinguda Diagonal 645 Barcelona 08028 Spain Depa.tment of Ecology a.d a.ima. Biology Marine Sciences Faculty University of VigoVigo 36310 Spain Spa.ish Institute of Ocea.ogra.hy Subida a Radio Faro 50-52Vigo 36390 Spain

Insula. ma.ine biota. a.e often richer in fa.na. diversity tha. those from the open sea.in the sa.e geo- gra.hica. region. The existence of pa.ticula. isla.d effects were tested under pola. conditions by compa.- ing infa.na. benthic a.sembla.es on Peter I Isla.d with those of simila. la.itudes in the open ocea. a. the Bellingsha.sen Sea.a.d a.so from the coa.t of the a.ta.ctic Peninsula. Sa.pling wa. ca.ried out a.oa.d the R/V Hesperides during the expedition na.ed BENTa.T-2003 from 24 Ja.ua.y to 3 Ma.ch 2003. Benthic sa.ples were collected a. 18 sta.ions ra.ging from 90 to 2 044 m depth, using a. USNEL-type box corer （BC） dredge. Representa.ives of 32 higher ta.a.of invertebra.es were found. Univa.ia.e a.d multiva.ia.e a.a.yses revea.ed va.ious pa.terns in the da.a. First, significa.t differences in polycha.te a.unda.ce were detected between the sta.ions loca.ed in the open sea.a.d the rema.ning sites （isla.d plus ma.nla.d sites）. Biva.ve a.unda.ces were a.so distinct between isla.d a.d ma.nla.d sa.pling sites. Sediment columns ta.en from the isla.d sea.loor exhibited the highest ra.e of bioturba.ion by the infa.na. These findings confirm the model tha. isla.ds develop distinct a.sembla.es cha.a.terized by the enha.cement of the benthic commu- nities even in cold wa.ers. Severa. a.iotic fa.tors were mea.ured simulta.eously a. the sea.loor a.d a.ong the wa.er column to investiga.e fa.na. distribution pa.terns. Significa.t correla.ions were found between the benthic a.sembla.es a.d a.combina.ion of two environmenta. va.ia.les：＂isla.d effect＂（mea.ured a. a.ca.egorica. va.ia.le） a.d the redox sta.e of sediments. Richer a.d more complex benthic a.sembla.es were found in Peter I Isla.d＇s sea.bottom, wherea. the more depa.pera.e bottoms rema.ned in the open sea.

关键词： a.ta.ctica Bellingsha.sen Sea benthos Peter I Isla.d PRIMER