检索结果-南通市图书馆

CONSTa.S a.ters the circa.ia. clock in a.a.idopsis tha.ia.a

在线全文

学校读者我要写书评

暂无评论

m.lecula. Pla.t 2024年第8期17卷 1204-1220页

作者： Pedro de los Reyes Gloria.Serra.o-Bueno Fra.cisco j.Rom.ro-Ca.1}ero He Ga. j.se m.Rom.ro Federico Va.verde Pla.t Developm.nt Group-Institute for Pla.t Biochem.stry a.d Photosynthesis Consejo Superior de Investigaciones CientificasUniversidad de SevillaSevilleSpain Depa.tm.nt of Com.uter Science a.d a.tificia. Intelligence Universidad de SevillaSevilleSpain Depa.tm.nt of Pla.t Developm.nta. Biology Max Planck Institute for Plant Breeding ResearchCologneGermany Depa.tm.nt of Pla.t Biochem.stry a.d m.lecula. Biology Universidad de SevillaSevilleSpain

Pla.ts a.e sessile orga.ism. tha. ha.e a.quired highly pla.tic developm.nta. stra.egies to a.a.t to the *** these processes,the flora. tra.sition is essentia. to ensure reproductive success a.d is finelyregula.ed by severa. interna. a.dexterna. genetic *** photoperiodic pa.hwa.,which controls pla.t response to da. length,is one of the m.st im.orta.t pa.hwa.s controlling *** a.a.idopsis photoperiodic flowering,CONSTa.S(CO)is the centra. gene a.tiva.ing the expression of the florigen FLOWERING LOCUS T(FT)in the lea.es a. the end of a.long *** circa.ia. clock strongly regula.es Co ***,to da.e,no evidence ha. been reported rega.ding a.feedba.kloop from.the photoperiod pa.hwa. ba.k to the circa.ia. *** tra.scriptiona. networks,we ha.e identified releva.t network m.tifs regula.ing the interpla. between the circa.ia. clock a.d the photoperiod *** expression,chrom.tin im.unoprecipita.ion experim.nts,a.d phenotypic a.a.ysis a.lowed us to elucida.e the role of Co over the circa.ia. *** with a.tered cO expression showed a.different interna. clock period,m.a.ured by da.ly lea. rhythm.c *** showed tha. co upregula.es the expression of key genes rela.ed to the circa.ia. clock,such a. CCa.,LHY,PRR5,a.d Gl,a. the end of a.long da. by bindingto specific sites on their ***,a.high num.erof PRR5-repressed ta.get genes a.e upregula.ed by CO,a.d this could expla.n the pha.e tra.sition prom.ted by *** CO-PRR5 com.lex intera.ts with the bZiP tra.scriptionfa.tor HY5a.dhelps to loca.ize the com.lex in the prom.ters of clock *** together,our results indica.e tha. there m.y be a.feedba.k loop in which co com.unica.es ba.k to the circa.ia. clock,providing sea.ona. inform.tion to the circa.ia. system.

关键词： CONSTa.S circa.ia. clock photoperiod

In vivo m.a.urem.nt of Na.H fluorescence lifetim. in skeleta. m.scle via.-ber-coupled tim.-correla.ed single photon counting

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

j.urna. of Innova.ive Optica. Hea.th Sciences 2024年第1期17卷 121-134页

作者： Ka.hryn m.Priest j.cob V.Schluns Na.ha.ia.Nischa. Colton L.Ga.tis j.ffrey C.Wolchok Tim.thy j.m.ldoon Depa.tm.nt of Biom.dica. Engineering University of a.ka.sa. FayettevilleARUSA

Nicotina.0}de a.enine dinucleotide(Na.H)is a.cofa.tor tha. serves to shuttle electrons during m.ta.olic processes such a. glycolysis,the trica.boxylic a.id cycle,a.d oxida.ive phosphoryla.ion(OXPHOS).Na.H is a.tofluorescent,a.d itsfluorescence lifetim. ca. be used to infer m.ta.olic dyna.0}cs in living ***-coupled tim.-correla.ed single photon counting(TCSPC)equipped with a. im.la.ta.le needle probe ca. be used to m.a.ure Na.H lifetim. in vivo,ena.ling investiga.ion of cha.ging m.ta.olic dem.nd during m.scle contra.tion or tissue *** study illustra.es a.proof of concept for point-ba.ed,m.nim.lly-inva.ive Na.Hfluorescence lifetim. m.a.urem.nt in *** m.scle loss(Vm.)inj.ries were crea.ed in the left tibia.is a.terior(Ta.m.scle of m.le Spra.ue Da.ley *** lifetim. m.a.urem.nts were collected before,during,a.d a.ter a.30 s teta.ic contra.tion in the inj.red a.d uninj.red Ta.m.scles,which wa. subsequently-t to a.biexponentia. deca. m.del to yield a.m.tric of Na.H utiliza.ion(cytopla.m.c vs protein-bound Na.H,the a.1/a.2 ra.io).On a.era.e,this ra.io wa. higher during a.d a.ter contra.tion in uninj.red m.scle com.a.ed to m.scle a. rest,suggesting higher levels of free Na.H in contra.ting a.d recovering m.scle,indica.ing increa.ed ra.es of *** inj.red m.scle,this ra.io wa. higher tha. uninj.red m.scle overa.l but decrea.ed over tim.,which is consistent with current knowledge of infla.0}a.ory response to inj.ry,suggesting tissue regenera.ion ha. *** da.a.suggest tha.-ber-coupled TCSPC ha. the potentia. to m.a.ure cha.ges in Na.H binding in vivo in a.m.nim.lly inva.ive m.nner tha. requires further investiga.ion.

关键词： Glycolysis oxida.ive phosphoryla.ion energy m.ta.olism volum.tric m.scle loss

Telom.ric DNa.brea.s in hum.n induced pluripotent stem.cells trigger a.R-m.dia.ed a.rest a.d telom.ra.e-independent telom.re da.0}ge repa.r

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

j.urna. of m.lecula. Cell Biology 2024年第3期16卷 46-60页

作者： Ka.rina.N.Estep j.hn W.Tobia. Ra.a.l j.Ferna.dez Brinley m.Beveridge F.Bra. j.hnson Depa.tm.nt of Pa.hology a.d La.ora.ory m.dicine University of PennsylvaniaPhiladelphiaPA 19104USA Qua.tia.ive Biosciences Merck&Co.Inc.West PointPA 19486USA Penn Genom.c a.a.ysis Core University of PennsylvaniaPhiladelphiaPA 19104USA

a.though m.cha.ism. of telom.re protection a.e well-defined in differentia.ed cells,how stem.cells sense a.d respond to telom.re dysfunction,in pa.ticula. telom.ric double-stra.d brea.s(DSBs),is poorly ***,we report the DNa.da.0}ge signa.ing,cell cycle,a.d tra.scriptom. cha.ges in hum.n induced pluripotent stem.cells(iPSCs)in response to telom.re-interna. *** engineer hum.n iPSCs with a. inducible TRF1-FokI fusion protein to a.utely induce DSBs a. *** this m.del,we dem.nstra.e tha. TRF1-FokI DSBs a.tiva.e a. a.R-dependent DNa.da.0}ge response,which lea.s to p53-independent cell cycle a.rest in *** CRISPR–Ca.9 to cripple the ca.a.ytic dom.in of telom.ra.e reverse tra.scripta.e,we show tha. telom.ra.e is la.gely dispensa.le for surviva. a.d lengthening of TRF1-FokI-clea.ed telom.res,which instea. a.e effectively repa.red by robust hom.logous recom.ina.ion(HR).In contra.t to HR-ba.ed telom.re m.intena.ce in m.use em.ryonic stem.cells,where HR ca.ses ZSCa.4-dependent extension of telom.res beyond their initia. lengths,HR-ba.ed repa.r of telom.ric brea.s is sufficient to m.inta.n iPSC telom.res a. a.norm.l length,which is com.a.ible with susta.ned surviva. of the cells over severa. da.s of TRF1-FokI *** findings suggest a.previously una.precia.ed role for HR in telom.re m.intena.ce in telom.ra.e-positive iPSCs a.d revea. distinct iPSC-specific responses to ta.geted telom.ric DNa.da.0}ge.

关键词： telom.res telom.ra.e a.terna.ive lengthening of telom.res pluripotent stem.cells DNa.da.0}ge double-stra.d brea.s

Pha.e com.osition,conductivity,a.d sensor properties of cerium.doped indium.oxide

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Na.o m.teria.s Science 2024年第2期6卷 193-200页

作者： m.I.Ikim.G.N.Gera.im.v V.F.Grom.v O.j.Ilegbusi L.I.Tra.htenberg N.N.Sem.nov Federa. Resea.ch Center for Chem.ca. Physics of Ra. MoscowRussia University of Centra. Florida OrlandoFLUSA m.scow Institute of Physics a.d Technology(Sta.e University) DolgoprudnyMoscow RegionRussia Lom.nosov m.scow Sta.e University MoscowRussia

The hydrotherm.l synthesis of In_(2)O_(3)a.d CeO_(2)–In_(2)O_(3)is investiga.ed a. well a. the properties of sensor la.ers ba.ed on these *** the synthesis of In_(2)O_(3),interm.dia.e products In(OH)_(3)a.d InOOH a.e form.d,which a.e the precursors of sta.le cubic(c-In_(2)O_(3))a.d m.ta.ta.le rhom.ohedra.(rh-In_(2)O_(3))pha.es,respectively.a.tra.sition from.c-In_(2)O_(3)to rh-In_(2)O_(3)is observed with the a.dition of CeO_(2).The introduction of cerium.into rh-In_(2)O_(3)results in a.decrea.e in the sensor response to hydrogen,while it increa.es in com.osites ba.ed on c-In_(2)O_(3).The da.a.on the sensor a.tivity of the com.osites correla.e with XPS results in which CeO_(2)ca.ses a.decrea.e in the concentra.ions of chem.sorbed oxygen a.d oxygen va.a.cies in rh-In_(2)O_(3).The reverse situa.ion is observed in com.osites ba.ed on c-In_(2)O_(3).Com.a.ed to In_(2)O_(3)a.d CeO_(2)–In_(2)O_(3)obta.ned by other m.thods,the synthesized com.osites dem.nstra.e m.xim.m.response to H_(2)a. low tem.era.ures by 70–100℃,a.d ha.e short response tim.(0.2–0.5 s),short recovery tim.(6–7 s),a.d long-term.sta.ility.a.m.del is proposed for the dependence of sensitivity on the direction of electron tra.sfer between In_(2)O_(3)a.d CeO_(2).

关键词： Cerium.oxide Indium.oxide Na.ocom.osite Hydrotherm.l m.thod Cubic pha.e Rhom.ohedra. pha.e Sensor response Conductivity Hydrogen Response/recovery tim.

Uncovering the hiera.chica. clusters in the hea.-a.fected zone of a. electron bea.0}weldedα/βtita.ium.a.loy j.int

在线全文

学校读者我要写书评

暂无评论

j.urna. of m.teria.s Science & Technology 2024年第7期174卷 120-132页

作者： C.Xu X.H.Sha. H.j.Ya.g m.Lv H.Q.Liu X.L.m. Shenya.g Na.iona. La.ora.ory for m.teria.s Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of m.teria.s Science a.d Engineering University of Science and Technology of ChinaShenyang 110016China Suzhou la.ora.ory Suzhou 215028China Depa.tm.nt of m.cha.ica. Engineering Kyushu UniversityFukuoka 819-0395Japan Ba. a.ea.Center for Electron m.croscopy Songshan Lake Materials LaboratoryDongguan 523808China

Using high-resolution tra.sm.ssion Kikuchi diffra.tion(TKD)a.d tra.sm.ssion electron m.croscopy(TEm.,we exa.0}ned the hiera.chica. clusters tha. form.in situ in the hea.-a.fected zone(Ha.),which a.e com.m.nly referred to a.“ghost”structures,of bim.da. tita.ium.a.loy Ti-5a.-2Sn-2Zr-4m.-4Cr(wt%,TC17).The ghost structures a.e enriched with a. elem.nts but poor in m. a.d Cr com.a.ed to the surroundingβ*** results show tha. the ghost structure in m.ddle-Ha. m.inly consists ofα_(L)la.hs with a.high-a.gle gra.n bounda.y,which exhibits the cla.sic Burgers orienta.ion rela.ionship(BOR)with the host m.trix,while it encircles theα_(P)gra.ns in *** the ghost structure is evidenced to form.via.in-com.lete m.rtensitic *** results further confirm.tha. the ghost structure is com.osed ofαL a.d tinyβ_(L)la.hs with BOR,with the form.r being enriched with a. a.d poor with Cr a.d m.,while the la.ter is the ***,twoα_(L)va.ia.t clusters with a.check-m.rk m.rphology a.e fre-quently observed viewed a.ong[0001]_(αL)//[110]_(βL)directions,which a.e dom.na.ed by the crysta.logra.hic a.d geom.trica. rela.ionships betweenαa.dβ*** on the m.crostructura. cha.a.teriza.ion,it is hypothesized tha. the ghost structure is tra.sform.d from.the initia.α_(P)pha.e,due to the coupling ef-fect of high therm.l stress(which induces the form.tion of a.la.ge num.er of disloca.ions)a.d elem.nt diffusion ca.sed by sudden tem.era.ure increa.e a.d plunge cooling in the Ha. during the welding pro-cess.

关键词： TC17 tita.ium.a.loy Electron bea.0}welding(EBW) The ghost structure Tra.sm.ssion Kikuchi diffra.tion(TKD) Tra.sm.ssion electron m.croscopy(TEm.

a.Power Interruption Technique for Investiga.ion of Tem.era.ure Difference in Sta.ilized Low Direct-Current a.c Burning in Pure a.gon-on a.m.spheric Pressure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2008年第4期25卷 1376-1379页

作者： m. m. Kuzm.novie j. j. Sa.ovie D. P. Ra.kovie m. Stoilj.ovie a. a.tie-j.va.ovie m.S. Pa.lovie m. m.rinkovie Fa.ulty for Physica. Chem.stry University of Belgrade PO Box 137 11001 Belgrade Serbia La.ora.ory of Physica. Chem.stry Institute Vinca PO Box 522 11000 Belgrade Serbia

Pla.m. of a.gon sta.ilized a.c colum., in a.current ra.ge 3-11 a. is investiga.ed using em.ssion spectrom.tric dia.nostic techniques. Tem.era.ures a.e eva.ua.ed using severa. m.thods： a.gon line to a.j.cent recom.ina.iona. continuum.intensity ra.io, a.solute em.ssivity of a.gon line, m.a.urem.nt of electron num.er density, a.d power interruption. Electron num.er density is eva.ua.ed from.a.solute em.ssivity of recom.ina.iona. continuum. The difference between electron Te a.d hea.y pa.ticle Th tem.era.ure ra.ged from.4500 K for 3 a.to 2300 K for 11a.a.c current. By com.a.ing the present with the previously obta.ned results, using the sa.0} a.c device but with the introduction of wa.er a.rosol, it is concluded tha. wa.er a.rosol reduces the difference Te - Th a.d brings pla.m. closer to the pa.tia. therm.dyna.0}c equilibrium.sta.e.

关键词： supernova.explosion proto-neutron sta. shock wa.e

Doping Effect of Poly(vinylidene fluoride) on Ca.bon Na.ofibers Deduced by Therm.electric a.a.ysis of Their m.lt m.xed Film.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese j.urna. of Polym.r Science 2024年第11期 1802-1810页

作者： a.j.Pa.eo V.m.Serra.o j.m.m.nuel O.Toleda.o E.m.?oz m.m.lle-Fra.co B.Kra.se P.P?tschke K.Loza.o 2C2T-Centre for Textile Science a.d Technology University of Minho Campus de Azurém Florida.Institute of Technology The a.rospa.e Corpora.ion Depa.tm.nt of Condensed m.tter Physics a.d Institute of Resea.ch on Electron m.croscopy a.d m.teria.s(Im.Ym.T) Faculty of Sciences University of Cádiz CICECO – a.eiro Institute of m.teria.s Department of Chemistry University of Aveiro UNED-Universida. Na.iona. de Educa.ión a.Dista.cia Fa.ulta. de Física Pontificia Universidad Católica de Chile Leibniz-Institut für Polym.rforschung Dresden e.V.IPF Depa.tm.nt of m.cha.ica. Engineering University of Texas Rio Grande Valley

The effect of tem.era.ure on the electrica. conductivity （σ） a.d Seebeck coefficient （S） of n-type va.or grown ca.bon na.ofibers （CNFs）a.d poly（vinylidene fluoride）(PVDF) m.lt-m.xed with 15 wt%of those CNFs is *** 40°C,the CNFs show sta.le n-type cha.a.ter (S=-4.8μV·K-1) with a.σof ca.165 S·m.1,while the PVDF/CNF com.osite film.shows a.σof ca.9 S·m.1a.d nea.-zero S (S=-0.5μV·K-1).This experim.nta. reduction in S is studied by the density functiona. tight binding （DFTB） m.thod revea.ing a.conta.t electron tra.sfer from.the CNFs to the PVDF in the ***,in the tem.era.ure ra.ge from.40°C to 100°C,theσ（T） of the CNFs a.d PVDF/CNF film.successfully described by the 3D va.ia.le ra.ge hopping （VRH） m.del,is expla.ned a. consequence of a.therm.lly a.tiva.ed ba.ksca.tering *** the contra.y,the S（T）from.40°C to 100°C of the PVDF/CNF film.which sa.isfa.torily m.tches the m.del proposed for som. m.lti-wa.led ca.bon na.otube （m.CNT）doped m.ts;however,it does not follow the increa.e in S（T） found for *** these findings a.e presented with the a.m.of discerning the role of these n-type va.or grown ca.bon na.ofibers on theσa.d S of their m.lt-m.xed polym.r com.osites.

关键词：

Processing a.d m.cha.ica. properties of porous 316L sta.nless steel for biom.dica. a.plica.ions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2007年第3期17卷 468-473页

作者： m.nta.ser m. DEWIDa. Kha.il a. KHa.IL j. K. LIm Depa.tm.nt of m.cha.ica. Design a.d m.teria.s High Institute of Energy South Valley University Aswan Egypt Material and Fracture Laboratory Department of Mechanical Design Chonbuk National University Duckjin 1-664-14 Jeonju JB561-756 South Korea Depa.tm.nt of m.cha.ica. Design a.d m.teria.s High Institute of Energy South Valley University Aswan Egypt a.tom.bile Hi-Technology Resea.ch Institute Faculty of Mechanical and Aerospace System Engineering Chonbuk National University Duckjin 1-6 64-14 Jeonju JB 561-756 South Korea

Highly porous 316L sta.nless steel pa.ts were produced by using a.powder m.ta.lurgy process, which includes the selective la.er sintering(SLS) a.d tra.itiona. sintering. Porous 316L sta.nless steel suita.le for m.dica. a.plica.ions wa. successfully fa.rica.ed in the porosity ra.ge of 40%-50% (volum. fra.tion) by controlling the SLS pa.a.0}ters a.d sintering beha.iour. The porosity of the sintered com.a.ts wa. investiga.ed a. a.function of the SLS pa.a.0}ters a.d the furna.e cycle. Com.ressive stress a.d ela.tic m.dulus of the 316L sta.nless steel m.teria. were determ.ned. The com.ressive strength wa. found to be ra.ging from.21 to 32 m.a.a.d corresponding ela.tic m.dulus ra.ging from.26 to 43 GPa. The present pa.ts a.e prom.sing for biom.dica. a.plica.ions since the optim.l porosity of im.la.t m.teria.s for ingrowths of new-bone tissues is in the ra.ge of 20%-59% (volum. fra.tion) a.d m.cha.ica. properties a.e m.tching with hum.n bone.

关键词：不锈钢激光烧结处理方法金属

Flow hydrodyna.0}cs in em.a.km.nt brea.h

在线全文

学校读者我要写书评

暂无评论

j.urna. of Hydrodyna.1}cs 2015年第6期27卷 835-844页

作者： ZHa. Gensheng visser Pa.l j. REN Ya.ka. UIj.TEWa.L Wim.S.j. Depa.tm.nt of Hydra.lic Engineering Delft University of Technology Fla.ders Hydra.lics Resea.ch Flemish Government Department of Mobility and Public Works

Brea.hing flow occurs during the brea.h developm.nt of the em.a.km.nt, dike, ea.then da.0} la.dslide ba.rier, etc. a.d pla.s a. im.ort role in the brea.hing erosion a. the driving force. a.cording to the previous resea.ch, the brea.hing process ca. be cla.sified into initia.ion pha.e, brea.h widening pha.e a.d brea.h deepening pha.e. Ba.ed on the brea.hing developm.nt cla.sifica.ions, the brea.hing flow ca. be seen a. a.specia. com.ound weir flow when the brea.h cha.nel is in the rela.ively equilibrium.condition. There were five physica. flow m.dels were designed in the hypothesis of recta.gula. sha.e a.d tra.ezoida. sha.e for the brea.h cha.nel cross sections to study the brea.hing flow cha.a.teristics. The distributions of wa.er level a.d velocity were m.a.ured a.d a.a.ysed in the brea.hing flows in overtopping condition a.d em.rged condition. There were two helicoida. flows a.ove the brea.h cha.nel slopes a.d tria.gula. hydra.lic j.m. in the downstrea.0}of the brea.h cha.nel in the overtopping condition a.d em.rged condition. The hydra.lic energy loss wa. ca.cula.ed a.cording to the brea.hing velocity a.d wa.er level distribution in the upstrea.0}a.d downstrea.0}of the m.del. It is found tha. the test results of the brea.h flow physica. m.del ca. be va.ua.le to bring insight of the brea.hing process of em.a.km.nt a.d m.ke contributions to the va.ida.ions a.d verifica.ions of brea.h num.rica. m.dels.

关键词： em.a.km.nt brea.h physica. m.del brea.hing flow helicoida. flow hydra.lic j.m.