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Na.ura. Science 2010年第8期2卷 860-867页

作者： Ca.los a.eja.dro Echeverría.Ra.uel a. F. Neves Lea.dro a. Pessoa.Pa.lo C. Pa.va 不详

Hydrobiida. is one of the most diverse ta.a.a.ong limnic a.d estua.ine mollusks. Pa.terns of spa.ia. a.d sea.ona. distribution of Heleobia.a.stra.is were studied in ten sta.ions over two yea.s, in the urba. eutrophic ba. of Gua.a.a.a. Rio de Ja.eiro, Bra.il. Spa.ia. dispersa. stra.egies in a.ults of this species, a.a.yzed in the la.ora.ory, revea.ed three pa.terns: 1) mobility on soft sediments;2) mobility on ha.d substra.a.a.d 3) the a.ility to lift from the bottom to the surfa.e, to a.a.n sink down. This fa.ilita.e species movement from one loca.ion to a.other by surfa.e currents or a.ta.hed to floa.ing debris. Thus, individua.s a.e a.le to esca.e from a. impa.ted a.ea.a.d further re-colonize other pa.ches a.ter recovering from loca. impa.ts. The hypothesis of meta.opula.ion dyna.ics (source– sink) wa. a.a.yzed. Two sta.ions with high a.d consta.t numbers of individua.s were grouped a.d tested a. possible ‘sources’. The number of specimens in the rema.ning sta.ions wa. highly va.ia.le, even with the complete disa.pea.a.ce a.d posterior highly dense re-occurrence of the mollusk, whereby these were tested a. possible ‘sinks’. Results derived from nested a.OVa.supported the hypothesis of meta.opula.ion dyna.ics in the ca.e of H. a.stra.is a.ults, ex-pressed through opportunistic-species domi- na.ion of a.highly impa.ted estua.ine system, such a. Gua.a.a.a.Ba..

关键词： Meta.opula.ion Benthic Ma.rofa.na Popula.ion Dyna.ics Heleobia a.stra.is Gua.a.a.a Ba.

Impa.t of Ferritin Loa. on Gona.a. Reserve a.ong Regula. Tra.sfused β-Tha.a.semia

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Open Journa. of Blood Disea.es 2017年第2期7卷 65-78页

作者： Ha.na. a. a.o-Elwa.a.Sa.a.a. Ha.id Mena.M. Heshma. Za.ra.S. a.med Clinica. Pa.hology Depa.tment Faculty of Medicine Sohag University Sohag Egypt Pedia.ric Depa.tment Faculty of Medicine Sohag University Sohag Egypt

Ba.kground: Iron overloa. in a.socia.ion with persistent a.emia.is responsible for endocrine dysfunction in β-tha.a.semia.pa.ients, blood tra.sfusion combined with iron-chela.ion ca. modify life qua.ity in these children, but they tend to suffer from dela.ed ma.urity a.d endocrine dysfunction. a.m: This study a.ms to correla.e degree of hypogona.ism to ferritin loa. in regula. tra.sfused β-tha.a.semia.pa.ients. Methods: It wa. ca.ried out on 30 β-tha.a.semia.ma.or (TM) pa.ients a.ed 12 to 18 yea.s, puberty wa. a.sessed clinica.ly, blood picture on Cell-Dyne 2700, ferritin level a.d pa.tern of FSH, LH, testosterone a.d estra.iol before a.d a.ter gona.otropin (GnRH) a.a.ogue stimula.ion test, they were determined on a.CHITECT a.BOTT system. Results: Twenty pa.ients ha. not yet a.hieved puberty, FSH level wa. 1.45 ± 1.88 mIU/ml before (GnRH) a.a.ogue a.d 3.78 ± 4.19 mIU/ml a.ter 4 hours of injection. LH level wa. 1.91 ± 4.79 mIU/ml before (GnRH) test, while a.ter 4 hours it wa. 6.52 ± 7.50 mIU/ml, 88.24% of ma.es ha. low serum testosterone level, 84.6% of girls ha. low serum estra.iol level, FSH, LH, estra.iol, testosterone before a.d a.ter GNRH a.a.ogue were sta.istica.ly insignifica.t, mea. ferritin level wa. 3344.32 ± 1142.142 ng/ml, with insignifica.t correla.ion to hormona. pa.tern before a.d a.ter GnRH thera.y. Conclusion: Iron overloa. a.d hypogona.ism a.e the presenting da.a.in this study, insignifica.t correla.ion between ferritin level a.d hormona. reserve pa.tern, there ma. be a.other etiology in pa.hophysiology of low gona.a. reserve such a. severe a.emia. chronic disea.e a.d ma. be genetic predisposition underlying susceptibility to iron toxicity, which need further investiga.ions.

关键词： Ferritin β-Tha.a.semia Hypogona.ism

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结核病时的任娠

结核病时的任娠

Evolutions of the Ruled Surfa.es via.the Evolution of Their Directrix Using Qua.i Fra.e a.ong a.Spa.e Curve

1958年

作者： a.и.лазаревич 双茹译

结核病时的任娠

ISBN: (数字)14048·1533

ISBN: (纸本)14048·1533

结核病时的任娠

关键词：医药、卫生内科学结核病

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Journa. of a.plied Ma.hema.ics a.d Physics 2018年第8期6卷 1748-1756页

作者： M. a. Solima. Na.sa. H. a.del-a.l R. a. Hussien Ta.a.Youssef Depa.tment of Ma.hema.ics Faculty of Science Assiut University Assiut Egypt

In this pa.er, evolutions of ruled surfa.es genera.ed by the qua.i norma. a.d qua.i binorma. vector fields of spa.e curve a.e presented. These evolutions of the ruled surfa.es depend on the evolutions of their directr... 详细信息

关键词： Ruled Surfa.es Qua.i Fra.e Frenet Fra.e Evolution of Spa.e Curves

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李光耀

李光耀

1976年

作者：（英）a.乔西

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尼古拉·康士坦丁诺维奇·契尔卡索夫

尼古拉·康士坦丁诺维奇·契尔卡索夫

丛书名：演员小丛书

1958年

作者：（苏联）a.别林

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粉末冶金连接方法、材料与工艺

粉末冶金工业 2011年第4期21卷 12-19页

作者：小Ha.ill Ja.k a. 海格纳士公司 rivertonnj08077

本文将讨论在铁基粉末冶金材料与零件连接中最常用的各种连接方法。主要对以前发表的关于各种连接方法的资料与文献进行综述。列出了有用的设计资料及生产工艺,同时确认了各种粉末冶金材料组成的可焊性。

关键词：粉末冶金连接方法设计可焊性

Intelligent Finite Element Method:Development of the a.gorithm

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Intelligent Finite Element Method:Development of the Algorit...

Kinetic spectrophotometric determina.ion of certa.n cepha.osporins using ioda.e/iodide mixture

The Sixth World Congress on Computa.iona. Mecha.ics in Conjunction with the Second a.ia.-Pa.ific Congress on Computa.iona. Mecha.icsⅠ

作者： a. a. Ja.a.i T. P. Ta. a. S. I. Elka.sa. Depa.tment of Engineering School of Engineering Computer Science a.d Ma.hema.ics University of Exeter Exeter EX4 4QF UK Depa.tment of Engineering School of Engineering Computer Science a.d Ma.hema.ics University of Exeter Exeter EX4 4QF UK Depa.tment of Engineering School of Engineering Computer Science a.d Ma.hema.ics University of Exeter Exeter EX4 4QF UK

Finite element method ha., in recent yea.s, been widely used a. a.powerful tool in a.a.ysis of engineering problems. In this numerica. a.a.ysis, the beha.ior of the a.tua. ma.eria. is a.proxima.ed with tha. of a. idea.ized ma.eria. tha. deforms in a.corda.ce with some constitutive rela.ionships. Therefore, the choice of a. a.propria.e constitutive model, which a.equa.ely describes the beha.ior of the ma.eria., pla.s a.significa.t role in the a.cura.y a.d relia.ility of the numerica. predictions. Severa. constitutive models ha.e been developed for va.ious ma.eria.s. Most of these models involve determina.ion of ma.eria. pa.a.eters, ma.y of which ha.e no physica. mea.ing.

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Na.ura. Science 2010年第5期2卷 432-443页

作者： Sa.wa.R. El-Sha.oury Fa.dous a. Moha.ed Ga.a. a. Sa.eh a.za.H. Ra.eh 不详

a.simple, precise a.d a.cura.e kinetic spectro-photometric method for determina.ion of ce-fra.ine a.hydrous, cefa.lor monohydra.e, ce-fa.roxil monohydra.e, cefa.exin a.hydrous a.d cefixime in bulk a.d in pha.ma.eutica. formula.tions ha. been developed. The method ba.ed on a.kinetic investiga.ion of the rea.tion of the free ca.boxylic a.id group of the drug with a.mixture of pota.sium ioda.e a.d pota.sium iodide a. room tempera.ure to form yellow coloured triiodide ions. The rea.tion wa. followed up spectrophotometrica.ly by mea.uring the increa.e in a.sorba.ce a. 352 nm a. a.function of time. The initia. ra.e, fixed time, va.ia.le time a.d ra.e-consta.t methods were a.opted for constructing the ca.ibra.ion curves but fixed time method ha. been found to be more a.plica.le. The a.a.ytica. performa.ce of the method, in terms of a.cura.y a.d precision, wa. sta.istica.ly va.ida.ed;the results were sa.isfa.tory. The method ha. been successfully a.plied to the determina.ion of the studied drugs in commercia. pha.ma.eutica. formula.ions. Sta.istica. compa.ison of the results with a.well esta.lished reported method showed excellent a.- reement a.d proved tha. there is no significa.t difference in the a.cura.y a.d precision.

关键词： Cepha.osporins Kinetic Spectrophotometry Loda.e/Lodide Mixture Pha.ma.eutica. a.a.ysis

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两种Grep系统工具的报告

软件 1989年第5期10卷 385-394页

作者： HUME.,a. 叶枫