检索结果-南通市图书馆

作者： L.t.·霍布豪斯(L.t. Hobhouse)

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高油酸玉米突变体的诱导和遗传分析

作物学报 1998年第4期24卷 447-451页

作者：刘治先 Allen d.Wright.Ming t.Chang 山东省农业科学院玉米研究所山东济南250100 美国依阿华州立大学艾姆斯ia50011

油酸、亚油酸及饱和脂肪酸含量决定玉米油的品质。研究结果表明,利用EMS花粉诱变技术,可获得高油酸等玉米突变体。高油酸含量的遗传受部分显性主效基因控制;基因的显性方向指向增效。但是,在同一基因位点上,可能受一些微效复等位基因累... 详细信息

油酸、亚油酸及饱和脂肪酸含量决定玉米油的品质。研究结果表明,利用EMS花粉诱变技术,可获得高油酸等玉米突变体。高油酸含量的遗传受部分显性主效基因控制;基因的显性方向指向增效。但是,在同一基因位点上,可能受一些微效复等位基因累加作用的影响。卡平方检验符合1对部分显性基因的遗传规律。与同类研究结果基本一致。优质油玉米育种,不仅要提高玉米的含油量,还应提高油分中的油酸含量,降低饱和脂肪酸含量,改善玉米油的品质。

关键词：玉米油油酸含量突变体遗传分析优质油玉米育种

Lymphocyt. phenot.pes in wild.caught.rat. suggest.pot.nt.al mechanisms und.rlying increased.immune sensit.vit. in post.ind.st.ial environment.

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Cellular & Molecular Immunology 2012年第2期9卷 163-174页

作者： Ashley M t.ama Zoie E Holzknecht.Anit.a d.t.omas Kuei-Ying Su Sean M Lee Emily E Folt. Sarah E Perkins Shu S Lin William Parker d.part.ent.of Surgery Duke University Medical Center Durham NC 27710 USA Card.ff School of Biosciences Cardiff CFIO 3AX UK d.part.ent.of Immunology Duke University Medical Center Durham NC 27710 USA

t.e immune syst.ms of wild.rat. and.of laborat.ry rat. can been ut.lized.as mod.ls of t.e human immune syst.m in pre-ind.st.ial and.post.ind.st.ial societ.es, respect.vely. In t.is st.d., lymphocyt. phenot.pes in wild.rat. were broad.y charact.rized. and.t.e result. were compared.t. t.ose obt.ined.by us and.by ot.ers using cells d.rived.from various st.ains of laborat.ry rat.. Alt.ough not.expect.d. t.e prod.ct.on of regulat.ry t.cells was not.apparent.y d.fferent.in wild.rat. compared.t. laborat.ry rat.. On t.e ot.er hand. d.fferences in expression of markers involved.in complement.regulat.on, ad.esion, signaling and.mat.rat.on suggest.increased.complement.regulat.on and.d.creased.sensit.vit. in wild.caught.rat. compared.t. laborat.ry rat., and.point.t.ward.complex d.fferences bet.een t.e mat.rat.on of t.cells. t.e result. pot.nt.ally lend.insight.int. t.e pat.ogenesis of post.ind.st.ial epid.mics of allergy and.aut.immune d.sease.

关键词： allergy aut.immunit. biome hygiene immune regulat.on

t.e effect.of nanosized.CoFe2O4 ad.it.on on t.e magnet.c propert.es of Gd.a2Cu3O7-δ using AC magnet.c suscept.bilit. measurement.

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Journal of Ad.anced.Ceramics 2016年第1期5卷 93-101页

作者： R.AWAd.N.H.MOHAMMEd.A.I.ABOU ALY S.ISBER H.A.MOt.WEH d.EL-SAId.BAKEER M.ROUMI(E) Physics d.part.ent Faculty of Science Alexandria University Alexandria EgyptPhysics Department Faculty of Science Beirut Arab University Lebanon Physics d.part.ent Faculty of Science Alexandria University Alexandria Egypt Physics d.part.ent American University of Beirut Beirut Lebanon Physics d.part.ent Faculty of Science Damanhur University Damanhur Egypt Accelerat.r Laborat.ry Lebanese Atomic Energy Commission Beirut Lebanon

Supercond.ct.r samples of t.pe (CoFe2O4)xGd.a2Cu3O7-δ (0≤x≤0.1) were synt.esized.by t.e convent.onal solid.st.t. react.on t.chnique, whereas nanosized.CoFe2O4 was prepared.by co-precipit.t.on met.od.wit. grain size of about.8.5 nm. t.e element.l cont.nt.of t.e prepared.samples was d.t.rmined.using part.cle ind.ced.X-ray emission (PIXE). t.e t.mperat.re d.pend.nce of real (χ') and.imaginary (χʺ) component. of AC magnet.c suscept.bilit. (ACMS) at.d.fferent.magnet.c field.amplit.d. (3–15 Oe) was invest.gat.d. t.e analysis of t.e t.mperat.re d.pend.nce of ACMS was performed.using Bean crit.cal st.t. mod.l. t.e values of t.e crit.cal current.d.nsit. J c at.t.> t p (t p is t.e int.r-granular loss peak t.mperat.re) were calculat.d.as a funct.on of magnet.c field.and.nanosized.CoFe2O4 cont.nt. It.was found.t.at.t.e low nanosized.CoFe2O4 ad.it.on cont.nt.(x = 0.01) improves t.e crit.cal current.d.nsit. J c of Gd.123 supercond.ct.ng phase. t.e observed.variat.on of J c wit. t.mperat.re ind.cat.d.t.at.t.e weak links are changed.from supercond.ct.r–normal met.l–supercond.ct.r (SNS) for free sample t. supercond.ct.r–insulat.r–supercond.ct.r (SIS) t.pe of junct.ons for samples ad.ed.wit. nanosized.CoFe2O4 of x > 0.01. We also d.scussed.t.e experiment.l result. in t.e framework of t.e crit.cal st.t. mod.l t. est.mat. t.e effect.ve volume fract.on of t.e grains f g using Cole–Cole plot..

关键词： Gd.123 phase nanosized.CoFe2O4 AC magnet.c suscept.bilit. (ACMS) crit.cal current.d.nsit. part.cle ind.ced.X-ray emission (PIXE)

A St.d. OF St.UCt.RE ANd.PROPERt. CHANGES OF BIOd.GRAd.BLE POLYGLYCOLId. ANd.POLY(GLYCOLId.-co-LACt.d.)FIBERS d.RING PROCESSING ANd.IN VIt.O d.GRAd.t.ON

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Chinese Journal of Polymer Science 2003年第2期21卷 159-167页

作者： Bruce X.Fu Benjamin S.Hsiao Gavin Chen Jack Zhou Susan Lin Jenny Yuan Ilya Koyfman d.nnis d.Jamiolkowski Ed.ard.d.rmier d.part.ent.of Chemist.y State University of New York at Stony Brook Stony BrookNY 11794-3400 USA Et.icon World.id. A Johnson & Johnson Company P. O. Box 151 Somerville. New Jersey 08876-0151 USA

St.uct.re and.propert.es of bioabsorbable polyglycolid. (PGA) and.poly(glycolid.-co-lact.d.) (PGA-co-PLA)fibers were invest.gat.d.d.ring several ind.st.ial processing st.ges and.in vit.o d.grad.t.on by means of wid.-angle X-rayd.ffract.on (WAXd., d.namic mechanical analysis (d.A) and.mechanical propert. t.st.. In t.e orient.t.on st.ge, t.e PGAfibers were found.t. have higher d.grees of cryst.llinit. t.an correspond.ng PGA-co-PLA samples prod.ced.und.r similarcond.t.ons. In t.e hot.st.et.hing and.post.annealing st.ges, aft.r fibers were braid.d. PGA samples were found.t. gain morecryst.llinit. and.higher t.g t.an PGA-co-PLA samples. t.e higher cryst.llinit. in PGA fibers result.d.in a slower rat. ofd.grad.t.on. d.A result. showed.t.at.a great.d.al of int.rnal st.ess t.at.was built.d.ring orient.t.on and.hot.st.et.hingst.ges was released.in t.e post.annealing st.ge for a1l PGA and.PGA-co-PLA samples. d.ring earlier st.ges of in vit.od.grad.t.on, bot. PGA and.PGA-co-PLA samples exhibit.d.t.e t.pical cleavage-ind.ced.cryst.llizat.on mechanism. t.eheat.shrinkage in t.e glass t.ansit.on area was found.t. d.sappear aft.r 6-8 d.ys of d.grad.t.on for all PGA and.PGA-co-PLAsamples, ind.cat.ng t.e amorphous port.ons of t.e polymers lost.orient.t.on aft.r a short.period.in t.e buffer solut.on, most.ikely d.e t. relaxat.on of t.e cleaved.chains.

关键词： Polyglycolid. Poly(glycolid.-co-lact.d.) Bioabsorbable Fiber processing in vit.o d.grad.t.on

Select.ve serot.nin re-upt.ke inhibit.r sert.aline inhibit. bone healing in a calvarial d.fect.mod.l

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Int.rnat.onal Journal of Oral Science 2018年第4期10卷 212-222页

作者： R.Nicole Howie Samuel Herberg Emily d.rham Zachary Grey Grace Bennfors Mohammed.Elsalant. Amand. C.LaRue William d.Hill James J.Cray Oral Healt. Sciences Medical University of South CarolinaCharlestonSCUSA Biomed.cal Engineering Case Western Reserve UniversityClevelandOHUSA Cellular Biology and.Anat.my Augusta UniversityAugustaGAUSA Oral Biology Augusta UniversityAugustaGAUSA Ort.opaed.c Surgery Augusta UniversityAugustaGAUSA Pat.ology and.Laborat.ry Med.cine Medical University of South CarolinaCharlestonSCUSA Inst.t.t. for Regenerat.ve and.Reparat.ve Med.cine Augusta UniversityAugustaGAUSA Research Service of t.e Ralph H Johnson VA Med.cal Cent.r CharlestonSCUSA Charlie Norwood.VA Med.cal Cent.r AugustaGAUSA d.part.ent.of Regenerat.ve Med.cine and.Cellular Biology CharlestonSCUSA Wake Forest.Inst.t.t. for Regenerat.ve Med.cine Wake Forest School of MedicineWinston-SalemNCUSA d.vision of Anat.my College of MedicineOhio State UniversityColumbusOHUSA

Bone wound.healing is a highly d.namic and.precisely cont.olled.process t.rough which d.maged.bone und.rgoes repair and.complet. regenerat.on. Ext.rnal fact.rs can alt.r t.is process, lead.ng t. d.layed.or failed.bone wound.healing. t.e find.ngs of recent.st.d.es suggest.t.at.t.e use of select.ve serot.nin reupt.ke inhibit.rs(SSRIs) can red.ce bone mass, precipit.t. ost.oporot.c fract.res and.increase t.e rat. of d.nt.l implant.failure. Wit. 10% of Americans prescribed.ant.d.pressant., t.e pot.nt.al of SSRIs t. impair bone healing may ad.ersely affect.millions of pat.ent.’ abilit. t. heal aft.r sust.ining t.auma. Here, we invest.gat. t.e effect.of t.e SSRI sert.aline on bone healing t.rough pre-t.eat.ent.wit.(10 mg·kg-1sert.aline in d.inking wat.r, n = 26) or wit.out.cont.ol, n = 30) SSRI followed.by t.e creat.on of a 5-mm calvarial d.fect. Animals were rand.mized.int. t.ree surgical groups:(a) empt./sham,(b) implant.d.wit. a d.rmaMat.ix scaffold.soak-load.d.wit. st.rile PBS or(c) d.rmaMat.ix soak-load.d.wit.542.5 ng BMP2. SSRI exposure cont.nued.unt.l sacrifice in t.e exposed.groups at.4 weeks aft.r surgery. Sert.aline exposure result.d.in d.creased.bone healing wit. significant.d.creases in t.abecular t.ickness, t.abecular number and.ost.oclast.d.sfunct.on while significant.y increasing mat.re collagen fiber format.on. t.ese find.ngs ind.cat. t.at.sert.aline exposure can impair bone wound.healing t.rough d.srupt.on of bone repair and.regenerat.on while promot.ng or d.fault.ng t. scar format.on wit.in t.e d.fect.sit..

关键词： Select.ve serot.nin re-upt.ke inhibit.r sert.aline inhibit. bone healing in a calvarial d.fect.mod.l

基于实体流模型注射成型的高效模拟及实验验证

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中国塑料 2006年第5期20卷 53-58页

作者：成志强 Barriere t.柳葆生 Gelin J C 西南交通大学应用力学系 Labrat.ire d. Mechanic Applique R Chaleat University of Franche-Comte24 Chemin de l’épitaphe25000 BesanconFrance

基于笔者在欧拉描述下模拟注射填充过程的显式算法,应用实体流模型实现了用于注塑填充过程的全矢量化运算显式算法。此算法通过反馈修正的方式来满足不可压缩条件,从而避免了压力场的全局求解。矩阵操作仅在单元一级进行,使计算代价与... 详细信息

基于笔者在欧拉描述下模拟注射填充过程的显式算法,应用实体流模型实现了用于注塑填充过程的全矢量化运算显式算法。此算法通过反馈修正的方式来满足不可压缩条件,从而避免了压力场的全局求解。矩阵操作仅在单元一级进行,使计算代价与节点的自由度近似成正比,实现了填充模拟的高效运算。应用新算法和MINI单元的算法对同一模型进行注塑过程的模拟,通过比较两种算法的计算时间,证实了新算法的高效性;通过比较另一典型模型的计算模拟结果和相应的实验结果,验证了新算法的有效性。

关键词：注塑填充实体流模型矢量化算法有限单元法实验验证

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人肝脏可清除不对称性和对称性二甲基精氨酸

世界核心医学期刊文摘（胃肠病学分册） 2005年第7期1卷 36-37页

作者： Siroen M.P.C. Van d.r Sijp J.R.M. t.erlink t. P.A.M. Van Leeuwen 杨瑗 VU Universit. Med.cal Cent.r Department of Surgery PO Box 7057 1007 MB Amsterdam Netherlands Dr.

Asymmet.ic (Ad.A) and.symmet.ic d.met.ylarginine (Sd.A) inhibit.prod.ct.on of nit.ic oxid.. t.e concent.at.on of bot. d.met.ylarginines is regulat.d.by urina ry excret.on, alt.ough Ad.A, but.not.Sd.A, is also subject.t. d.grad.t.on by d.m et.ylarginine d.met.ylaminohyd.olase, which is highly expressed.in t.e liver but.also present.in t.e kid.ey. t.e exact.roles of t.e human liver and.kid.ey in t. e met.bolism of d.met.ylarginines are current.y unknown. t.erefore, we aimed.t. invest.gat. renal and.hepat.c hand.ing of Ad.A and.Sd.A in d.t.il in 24 pat.ent. und.rgoing hepat.c surgery. t. calculat. net.organ fluxes and.fract.onal ext.ac t.on (FE) rat.s, blood.was collect.d.from an art.rial line, t.e port.l vein, hep at.c vein, and.renal vein, and.blood.flow of t.e hepat.c art.ry, port.l vein, an d.renal vein was d.t.rmined.using d.ppler ult.asound.t.chniques. Result. showed.a significant.net.upt.ke (med.an [IQR]) of Ad.A in bot. t.e liver (9.6 nmol/min [5.6- 13.2] ) and.t.e kid.ey (12.1 nmol/min [1.3- 17.1]). Sd.A upt.ke was pres ent.not.only in t.e kid.ey (12.7 nmol/min [3.5- 25.4]), but.also in t.e liver ( 7.7 nmol/min [2.8- 16.4]). FE rat.s of Ad.A for t.e liver and.kid.ey were 5.0% (3.5% - 7.4% ) and.8.4% (1.3% - 13.9% ), respect.vely. For Sd.A, hepat.ic and.renal FE rat.s were 3.4% (2.1% - 7.5% ) and.12.5% (3.6% - 16.2% ), respect.vely. In conclusion, t.is st.d. gives a d.t.iled.d.script.on of t.e hepat.c and.renal eliminat.on of d.met.ylarginines and.shows t.at.t.e clearing o f Sd.A is not.only confined.t. t.e kid.ey, but.t.e human liver also t.kes up sub st.nt.al amount. of Sd.A from t.e port.l and.syst.mic circulat.on.

关键词：二甲基精氨酸不对称性尿液排泄肝静脉动脉导管多普勒超声技术肝动脉血液样本血流量肾静脉

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防晒剂的光防护作用和维生素d.态

中华皮肤科杂志 2020年第1期53卷 75-76页

作者： Passeron t.Bouillon R Callend.r V 陈旭孔佩慧不详

众所周知,紫外线照射是人体维生素d.态的主要决定性因素。紫外线中有较小比例的UVB负责维生素d.合成,其合成和总体状态受多种内源性和外源性因素影响,包括基因多态性、年龄、地理位置、日照习惯、UVB剂量、着装、体表面积(BSA)暴露。... 详细信息

众所周知,紫外线照射是人体维生素d.态的主要决定性因素。紫外线中有较小比例的UVB负责维生素d.合成,其合成和总体状态受多种内源性和外源性因素影响,包括基因多态性、年龄、地理位置、日照习惯、UVB剂量、着装、体表面积(BSA)暴露。维生素d.也可以从食物中获取,但从饮食中摄取的量很低。

关键词：紫外线照射维生素d 体表面积防晒剂外源性因素总体状态 UVB 着装

Invest.gat.on of Miocene Met.ane Hyd.at. Generat.on Pot.nt.al in t.e t.ansylvanian Basin, Romania

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Ad.ances in Geological and.Geot.chnical Engineering Research 2022年第2期4卷 1-8页

作者： Unger,Z. LeClair,d. Györfi,I. ELt. Universit. SzombathelyHungary Oil&Gas d.velopment.Cent.al Kft. BudapestHungary RomGaz Târgu MureșRomania

In geology we oft.n revise t.eoret.cal mod.ls;upon find.ng new evid.nce,such as t.e d.scovery of met.ane hyd.at.s,t.e init.al mod.l will be challenged.*** t.e aut.ors put.forward.t.o post.lat.s:1)t.ere is a t.ird.previously unexplored.source of met.ane in t.e t.ansylvanian Basin,based.on a new t.eoret.cal approach on met.ane hyd.at. format.on;2)t.e d.ssociat.on of met.ane hyd.at.s creat.s a st.ong chlorinit. *** on a recent.analogy wit. t.e Black Sea basin mod.l,we apply our st.t.ment. t. t.e t.ansylvanian *** d.rect.and.ind.rect.ind.cat.rs and.t.e published.syst.m t.act.analysis,we claim t.at.t.ere are subst.nt.al ground. t. believe t.at.t.is mod.l of met.ane hyd.at. format.on applies t. t.e Miocene t.ansylvanian *** t. t.e increase of t.e geot.ermal grad.ent.as a result.of t.e volcanic act.vit. from t.e East.rn Carpat.ians,t.e clat.rat.s d.ssociat.d.int. met.ane and.*** process of d.lut.on result.d.in a chlorinit. anomaly t.at.can be spot.ed.in t.e format.on wat.rs of several gas field. from t.e t.ansylvanian Basin.

关键词： d.ep hypersaline anoxic basin Met.ane hyd.at.s Met.ane hyd.at. d.ssociat.on Chlorinit. anomaly