检索结果-南通市图书馆

Prevention of Ca.bon Tetra.hloride （CCl4）-Induced Liver Da.a.e in Guinea.Pigs by Cyphostemma.digita.um

Journa. of Life Sciences 2012年第2期6卷 137-143页

作者： Moha.ed a. a.-Dua.s Ya.ya.S. a.-a.tha. a.dulba.et a.-Ma.ha. Mukhta. a. Sha.sa. Depa.tment of Chemistry Faculty of Science Ibb University Ibb 70270 Yemen Depa.tment of Biology Faculty of Science Ibb University Ibb 70270 Yemen Depa.tment of a.ima. Production Faculty of Agriculture lbb University Ibb 70270 Yemen

Cyphostemma.digita.um （Vita.ea.） is a.perennia., climbing, succulent undershrub with compound fleshy lea.es a.d tendrils. The pla.t is used ma.nly a. a.food fla.oring, but it is a.so a.ma.n constituent of tra.itiona. Yemeni soup （Ma.a.）. Besides tha., it ha. been described to be used a. a.medicina. pla.t. The a.m of this work wa. to study the hepa.oprotective effect of the a.ueous extra.t of C. digita.um a.a.nst CCl4-induced liver injury in Guinea.pigs. a.ima.s were divided into four groups. Group I, served a. norma. control. Group II received 2 mL CCl4/kg b.w. diluted with olive oil, a. 1：1 ra.io on da. 11. Group III （test group） wa. pre-trea.ed ora.ly with 100 mg/kg b.w. a.ueous lea.es extra.t of C. digita.um for 10 da.s followed by subcuta.eous injection of CC14 （2 mL/kg b.w.）, once on da. 11. Group IV were ora.ly given Liv-52 （100 mg/kg b.w.） once da.ly for 10 da.s followed by subcuta.eous injection of CC14. Our results show tha., the a.tivity of serum hepa.ic enzymes （a.a.ine a.inotra.fera.e （a.T）, a.pa.ta.e a.inotra.fera.e （a.T）, a.d a.ka.ine phospha.a.e （a.P）） were significa.tly eleva.ed in Guinea.pigs trea.ed with CCl4, while both the C. digita.um extra.t a.d Liv-52 reduced significa.tly these enzymes a.tivity. a.so, the levels of glucose, urea. cholesterol a.d triglycerides were decrea.ed when compa.ed with intoxica.ed control. Histopa.hologica. exa.ina.ion of intoxica.ed a.ima.s showed fa.ty cha.ges, infla.ma.ion a.d necrosis indica.ing liver da.a.e, while the a.ima.s received C. digita.um or Liv-52 showed less pa.hologica. effects or norma. liver when compa.ed to a.ima.s trea.ed with CC14 a.one. Biochemica. a.d histologica. results confirm the hepa.oprotective effect of a.ueous extra.t of C. digita.um.

关键词： Cyphostemma.digita.um extra.t CCl4 liver da.a.e Guinea.pig.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Spa.ia. a.d tempora. distribution of the ga.tropod Heleobia.a.stra.is in a. eutrophic estua.ine system suggests a.meta.opula.ion dyna.ics

引用

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.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

天然寡糖LSIMS测定的基质效应

引用

科学通报 1991年第23期36卷 1792-1796页

作者：蒋可 a. L. Burlinga.e 中国科学院生态环境研究中心北京100083 University of Ca.ifornia San Francisco

糖复合物(Glycoconjuga.es)作为信息的载体具有重要的生物学功能,糖链部分包含着惊人的信息量,分子结构在80年代日益受到重视。软电离质谱技术的参与,例如液态二次离子质谱(Liquid Seconda.y Ioniza.ion Ma.s Spectrometry, LSIMS),使... 详细信息

糖复合物(Glycoconjuga.es)作为信息的载体具有重要的生物学功能,糖链部分包含着惊人的信息量,分子结构在80年代日益受到重视。软电离质谱技术的参与,例如液态二次离子质谱(Liquid Seconda.y Ioniza.ion Ma.s Spectrometry, LSIMS),使得痕量的完整寡糖链直接测定成为现实,LSIMS和快原子轰击质谱(Fa.MS)

关键词：寡糖基质效应结构信息 LSIMS

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Eva.ua.ion of Opera.ing Doma.ns in Power Systems

引用

Energy a.d Power Engineering 2012年第4期4卷 274-282页

作者： M. a. El-Ka.y Y. a. a.turki M. S. a.-Sa.d SEC Cha.r in Power System Relia.ility a.d Security King Saud University Riyadh Saud Arabia

This pa.er presents the results of a.recent ma.or industry-supported study with the a.m to provide power system opera.ors with more mea.ingful a.d effective mea.s to quickly identify fea.ible opera.ing bounda.ies a. well a. more flexibility to select a.terna.e opera.ing scena.ios. In this rega.d, the pa.er outlines the ma.n theoretica. ba.is a.d computa.iona. fra.ework for the development of innova.ive computerized schemes ca.a.le of identifying a.d processing va.ious system integrity doma.ns. The novel fra.ework a.lows system opera.ors to determine – in a.fa.t a.d relia.le ma.ner – the most fa.ora.le opera.ing scena.ios which ma.nta.n system security, relia.ility a.d opera.ing performa.ce qua.ity. For demonstra.ion purposes, a.d without loss of genera.ity, a. empha.is is given to the dyna.ic system security problem where the Tra.sient Energy Function (TEF) method is used to define qua.tita.ive mea.ures of the level (degree) of system security for a.given opera.ing scena.io. Nonetheless, the fra.ework presented is a.plica.le quite a. well to other system performa.ce functions a.d criteria.tha. ma. be considered. a.demonstra.ive a.plica.ion is presented for a.9-bus benchma.k system, widely used in the litera.ure. In a.dition, a.pra.tica. a.plica.ion is a.so presented for the Sa.di Electricity Compa.y (SEC) power system where the opera.ing security doma.n wa. eva.ua.ed in the opera.ing pa.a.eter spa.e spa.ned by two ma.or interfa.e flows in the system.

关键词： Power Systems Dyna.ic Security Opera.ing Pa.a.eters Performa.ce Optimiza.ion

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Risk a.sessment a.d Biosa.ety Studies of Tra.sgenic Bt Rice （Oryza.sa.iva.L.）

引用

Journa. of a.ricultura. Science a.d Technology 2010年第4期4卷 1-9页

作者： N. Muha.ma. Ma.mood-ur-Ra.ma. a. a. Sha.id T. Husna.n a.d S. Ria.uddin Na.iona. Center of Excellence in Molecula. Biology （CEMB） 87-West Canal Bank Road University of the Punjab Lahore 53 700Pakistan

Tra.sgenic crops ha.ing a.ien genes from different sources a.e getting popula.ity. a.Rice （Oryza.sa.iva.L.） conta.ning gene from Ba.illus thuringiensis, a.soil ba.terium, wa. a.sessed to study the potentia. risks of tra.sgenic pla.ts on environment. The crop wa. found resista.t to ta.get insect pests. Rice va.iety Ba.ma.i-370 tra.sformed with two insecticida. genes, cryla. a.d cry2a. wa. grown under field conditions for severa. yea.s. Da.a.were collected a. different sta.es of the pla.t growth. Fa.e of Cry protein in soil, effect of Bt protein on non-ta.get insects, risks of vertica. a.d horizonta. gene flow were eva.ua.ed. No potentia. ha.a.d wa. found a. a.l levels. Bt protein wa. unsta.le a.d degra.ed significa.tly in soil within 30 da.s a.ter ha.vesting the crop. No ha.mful effects were found on non-ta.get insects （insects other tha. order lepidoptera.. Ma.imum gene flow of 0.02% wa. observed a. close spa.ing a.d no evidence of horizonta. gene tra.sfer to Rhizobium spp. wa. found. In conclusion, the tra.sgenic rice pla.ts tra.sformed with Bt genes ha.e no ha.mful effects on the environment.

关键词： Ba.illus thuringiensis tra.sgenic Bt rice (Oryza.sa.iva.L.) vertica. gene flow horizonta. gene tra.sfer non-ta.get insects genetica.ly modified crops.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

a.a.ytica. Method for Designing Gra.ing Compensa.ed Dispersion-Ma.a.ed Soliton Systems

引用

光学学报 2003年第S1期23卷 655-656页

作者： Y. H. C. Kwa. K. Na.keera. P. K. a. Wa. Photonics Resea.ch Centre a.d Depa.tment of Electronic a.d Informa.ion Engineering The Hong Kong Polytechnic University Hung Hom Hong KongPhotonics Research Centre and Department of Electronic and Information Engineering The Hong Kong Polytechnic University Hung Hom Hong KongPhotonics Research Centre and Department of Electronic and Information Engineering The Hong Kong Polytechnic University Hung Hom Hong Kong

We show a.useful a.a.ytica. method to design gra.ing compensa.ed dispersion-ma.a.ed systems. Our method is in good a.reement with the numerica. results even in the presence of group dela. ripples in the chirped fiber ... 详细信息

关键词： for in FWHM In of GDR a.a.ytica. Method for Designing Gra.ing Compensa.ed Dispersion-Ma.a.ed Soliton Systems

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

a.Compa.a.ive Study of Topica. a.a.lic a.id Crea. 20% a.d a.tive Lotion Conta.ning Triethyl Citra.e a.d Ethyl Linolea.e in the Trea.ment of Mild to Modera.e a.ne Vulga.is

引用

Journa. of Cosmetics, Derma.ologica. Sciences a.d a.plica.ions 2015年第3期5卷 223-230页

作者： Ha.der R. a.-Ha.a.y a.il a. Noa.mi Ihsa. a. a.-Turfy a.il Ibra.im Ra.a. Scientific Council of Derma.ology a.d Venereology-Ira.i Boa.d for Medica. Specia.iza.ions Baghdad Iraq Depa.tment of Derma.ology College of Medicine University of Baghdad Baghdad Iraq a.a. Boa.d for Derma.ology a.d Venereology Baghdad Teaching Hospital Medical City Baghdad Iraq Depa.tment of Derma.ology Baghdad Teaching Hospital Baghdad Iraq

Ba.kground: a.ne vulga.is is a.common disorder a.fecting 79% - 95% of the a.olescent popula.ion. The choice of trea.ment depends on the severity, pa.ients with mild to modera.e a.ne should receive topica. thera.y such a. a.ela.c a.id. Rising a.tibiotic drug resista.ce consequent to the widesprea. use of topica. a.tibiotics is ca.sing concern a.d effective non-a.tibiotic trea.ments a.e needed. Objective: To compa.e the effica.y a.d side effects of topica. a.ela.c a.id crea. 20% versus a.tive lotion conta.ning triethyl citra.e a.d ethyl linolea.e (TCEL) in trea.ment of mild to modera.e a.ne vulga.is. Pa.ients a.d Methods: This single, blinded, compa.a.ive, thera.eutic study wa. done in the Depa.tment of Derma.ology-Ba.hda. Tea.hing Hospita., Ba.hda., Ira.;from Ma. 2013-July 2014. Scoring of a.ne wa. ca.ried out a.d the pa.ients were exa.ined every 2 weeks for 10 weeks of trea.ment. One month a.ter stopping drugs, pa.ients were eva.ua.ed for drug complica.ions a.d disea.e recurrence. Sixty pa.ients fulfilling enrollment criteria.were included in this study. Pa.ients were divided into 2 groups: Group a.(30 pa.ients) trea.ed twice da.ly with TCEL lotion a.d Group B (30 pa.ients) trea.ed twice da.ly with topica. a.ela.c a.id crea. 20%. Results: Both topica. TCEL lotion a.d a.ela.c a.id crea. were sta.istica.ly a. effective thera.y for trea.ment of mild to modera.e a.ne vulga.is. TCEL lotion wa. more effective a.d a.t ea.lier tha. a.ela.c a.id crea. sta.ting from 4 weeks of thera.y till the end of trea.ment (a.ter 10 weeks) a.d even a.ter 4 weeks a.ter stopping the trea.ment (P-va.ue a. noted while the following side effects were reported;burning, pruritus a.d erythema. a.l these side effects disa.pea.ed a.ter 8 weeks from sta.ting trea.ment. a.ter one month of follow up there wa. no significa.t rela.se in both groups. Conclusion: The TCEL is non-a.tibiotic ba.ed, it ha. quicker onset of a.tion a.d observa.le improvement of

关键词： a.ne Vulga.is Infla.ma.ory a.nica.e a.ela.c a.id

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Solid-Conta.t Perchlora.e Sensor with Na.omola. Detection Limit Ba.ed on Coba.t Phtha.ocya.ine Ionophores Cova.ently a.ta.hed to Polya.ryla.ide

引用

a.erica. Journa. of a.a.ytica. Chemistry 2011年第7期2卷 820-831页

作者： Moha.ma. Nooredeen a.ba. a.del La.tief a. Ra.wa. Philippe Bühlma.n Ma.mud a. a.d El Gha.fa. 不详

Novel solid-conta.t perchlora.e sensors ba.ed on coba.t phtha.ocya.ine-C-monoca.boxylic a.id (I), a.d coba.t phtha.ocya.ine-C,C,C,C-tetra.a.boxylic a.id (II) a. free ionophores a.d cova.ently a.ta.hed to polya.ryla. mide (Pa.)—ionophores III a.d IV, respectively were prepa.ed. The a.l solid-sta.e sensors were constructed by the a.plica.ion of a.thin film of a.polymer cockta.l conta.ning a.phtha.ocya.ine ionophore a.d cetyltrimethyla.monium bromide (CTMa.) a. a.lipophilic ca.ionic a.ditive onto a.gold electrode precoa.ed with the conducting polymer poly (3,4-ethylenedioxythiophene) (PEDOT) a. a. ion a.d electron tra.sducer. The sensor with 10.3% of ionophore (III) cova.ently a.ta.hed to pla.ticizer-free poly (butyl metha.ryla.e-co-do- decyl metha.ryla.e) (PBDa. exhibited a.good selectivity for perchlora.e a.d discrimina.ed ma.y ions, in- cluding F–, Cl–, Br–, I–, SCN–, , S2– a.d . The cova.ent a.ta.hment of the ionophore to the polymer resulted in a.nea.-Nernstia. a.ionic slope of –62.3 mV/deca.e wherea. a.super-Nernstia. slope of –79.9 mV/ deca.e wa. obta.ned for the free ionophore. The sensor covered a.linea. concentra.ion ra.ge of 5 × 10–9 - 1 × 10–2 mol?L–1 with a.lower detection limit (LDL) of 1 × 10–9 mol?L–1 a.d ga.e a.sta.le response over a.pH ra.ge of 4 - 10.5. The a.l-solid sta.e sensors were utilized for the selective flow injection potentiometric determina.ion of perchlora.e in na.ura. wa.er a.d huma. urine sa.ples in the na.omola. concentra.ion ra.ge.

关键词： Ion-Selective Electrode Solid Conta.t Cova.ent Ionophore a.ta.hment Perchlora.e Flow-Injection a.a.ysis Urine

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

a.tibody Production for a.Ra.id Fluorescence Pola.iza.ion Immunoa.sa. of Estrone

引用

Biomedica. a.d Environmenta. Sciences 2014年第1期27卷 52-55页

作者： ZHa.G Xua. Wa.G Qia.g YU Zhong Sergei a. Eremin YU Chun Fa. LIU Jin SUN Yua. Ming LEI Hong Ta. Risk a.sessment Key La.ora.ory of a.ricultura. Product in Preserving Ministry of Agriculture/Guangdong Provincial Key Laboratory of Food Quality and SafetySouth China Agricultural University Depa.tment of Chemistry M.V. Lomonosov Moscow State University Environmenta. Science Progra. United International College

Estrone ha. been identified a. a.potentia. endocrine-disrupting chemica. （EDC）[1]. Estrone is usua.ly qua.tified by ga. chroma.ogra.hy-ma.s spectrometry （GC-MS）, GC-MS/MS, high performa.ce liquid chroma.ogra.hy （HPLC）, HPLC- MS, a.d HPLC-MS/MS, etc.[2-3]. Mea.while, severa. immunoa.sa.s ba.ed on ra.ioimmunoa.sa., enzyme linked immunosorbent a.sa. （ELISa. or chemiluminescence immunoa.sa. （CLIa. for determina.ion of estrone in rea. sa.ples ha.e been developed[2＇4]. a.though these methods a.e sensitive, they need multista.e sepa.a.ion a.d a.e thus time-consuming a.d la.orious. a.very promising wa. for the simplifica.ion of immunoa.sa.s for routine a.plica.ions is a.shift from heterogeneous methods （with sepa.a.ion） to homogeneous a.sa.s （without sepa.a.ion）[5]. Fluorescence pola.iza.ion immunoa.sa. （FPIa. is one of the homogeneous techniques tha. meets the requirements of a.simple, relia.le, fa.t, a.d cost-effective a.a.ysis[6]. Therefore, the present study is focused on the development of FPIa.in order to a.a.yze estrone ba.ed on a.tibody production.

关键词： FPIA a.tibody Production for a.Ra.id Fluorescence Pola.iza.ion Immunoa.sa. of Estrone

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：