检索结果-南通市图书馆

Hematotesticular barrier is altered from early stages of liver cirrhosis:Effect of insulin-like growth factor 1

World Journal of Gastroenterology 2004年第17期10卷 2529-2534页

作者： Inma Castilla-Cortázar Nieves diez María García-Fernández Juan Enrique Puche Fernando diez-Caballero Jorge Quiroga matías díaz-Sánchez Alberto Castilla Amelia díaz Casares Isabel Varela-Nieto Jesǘs Prieto Salvador González-Barón department of Human Physiology University of NavarraPamplonaNavarraSpain Department of Human physiologySchool of MedicineUniversity of MlagaMalagaSpain department of Human Physiology University of NavarraPamplonaNavarraSpain department of Human Physiology School of MedicineUniversity of MálagaMalagaSpain Instituto de Investigaciones Biomédicas "Alberto Sols" Consejo Superior de Investigaciones CientificasUniversidad Autónoma de Madrid (CSIC-UAM)MadridSpain Supported by the Spanish Program I+DSAF 99/0072 and SAF 2001/1672 department of Internal Medicine Hospital SierrallanaTollelavega and School of MedicineUniversity of the Basque Country-Vitoria-GasteizSpain Instituto de Investigaciones Biomedicas"Alberto Sols"Consejo Superior de Investigaciones Cientificas Universidad Autonoma de Madrid(CSIC-UAM) MadridSpain department of Internal Medicine Liver Unit University of Navarra PamplonaNavarraSpain

AIM:The pathogenesis of hypogonadism in liver cirrhosis is not well *** results from our laboratory showed that IGF-1 deficiency might play a pathogenetic role in hypogonadism of *** administration of IGF-1 for a short period of time reverted the testicular atrophy associated with advanced experimental cirrhosis. The aim of this study was to establish the historical progression of the described alterations in the testes, explore testicular morphology,histopathology,cellular proliferation,integrity of testicular barrier and hypophyso- gonadal axis in rats with no ascitic cirrhosis. METHOdS:Male Wistar rats with histologically-proven cirrhosis induced with carbon tetrachloride(CCI_4)for 11 wk, were allocated into two groups(n=12,each)to receive recombinant IGF-1(2 μg/100 gd,sc)for two weeks or *** rats receiving vehicle were used as control group(n=12). RESULTS:Compared to controls,rats with compensated cirrhosis showed a normal testicular size and weight and very few histopathological testicular abnormalities. However,these animals showed a significant diminution of cellular proliferation and a reduction of testicular transferrin *** addition,pituitary-gonadal axis was altered,with significant higher levels of FSH(Pd increased levels of LH in untreated cirrhotic ***,IGF-1 treatment normalized testicular transferrin expression and cellular proliferation and reduced serum levels of LH(P=ns vs controls,and Pd cirrhotic group). CONCLUSION:The testicular barrier is altered from an early stage of cirrhosis,shown by a reduction of transferrin expression in Sertoli cells,a diminished cellular proliferation and an altered gonadal *** treatment with IGF-1 could be also useful in this initial stage of testicular disorder associated with compensated cirrhosis.

关键词： Animals Atrophy Carbon Tetrachloride Estrogens Follicle Stimulating Hormone Hypogonadism Insulin-Like Growth Factor I Liver Cirrhosis Luteinizing Hormone Male Pituitary Gland Rats Rats, Wistar Research Support, Non-U.S. Gov't Sertoli Cells Testis Testosterone Transferrin

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

Some Specific Unboundedness Property in Smoothness Morrey Spaces. The Non-existence of Growth Envelopes in the Subcritical Case

引用

Acta mathematica Sinica,English Series 2016年第2期32卷 137-152页

作者： dorothee d.HAROSKE Susana d.MOURA Institute of mathematics Priedrich-Schiller-University Jena CMUC Department of MathematicsUniversity of Coimbra

Abstract We study smoothness spaces of Morrey type on Rn and characterise in detail those situa s,r n s n tions when such spaces of type Ap,q^s,r（Rn ） or A u^sp,q（R ） are not embedded into L∞（R^n）. We can show that in the so-called sub-critical, proper Morrey case their growth envelope function is always infinite which is a much stronger assertion. The same applies for the Morrey spaces Mu,p（Rn） with p 〈 u. This is the first result in this direction and essentially contributes to a better understanding of the structure of the above spaces.

关键词： Besov-type space Morrey space Besov-Morrey space Triebel-Lizorkin-Morrey space,growth envelope atomic decomposition

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

LI-RAdS中利于诊断良性的次要征象：在LR-5病灶中是否有作用

引用

国际医学放射学杂志 2022年第3期 365-366页

作者： R.Can F.Ver M.Ant d.S.Gag F.mat M.Mid 孔蒙娟

摘要目的肝脏影像报告与数据系统(LI-RAdS)是一套标准化的报告评价系统，用于解读肝细胞癌(HCC)高危人群的肝脏影像征象，其中LR-5等级提示肯定为HCC。在LI-

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

如何预测未来

引用

科技新时代（上半月） 2007年第8期 74-77页

作者： MICHAEL MOYER mat dARTFORO（图）

你该相信美国航空航天局宣布的事情d-57如果他们说某个计划会在某个时间实现，你真的会在那天获得计划实施的新闻消息吗？至少到目前为止，美国航空航天局的诚信记录是难以令人满意的.几乎每一次航天飞机的发射都会被推迟，延迟时间平... 详细信息

你该相信美国航空航天局宣布的事情d-57如果他们说某个计划会在某个时间实现，你真的会在那天获得计划实施的新闻消息吗？至少到目前为止，美国航空航天局的诚信记录是难以令人满意的.几乎每一次航天飞机的发射都会被推迟，延迟时间平均有两个星期之久.而依赖航天飞机进行建设的国际太空站——原计划只要5年时间和37次航天飞机任务就能完工——到目前为止已经花去了10年的时间，

关键词：美国航空航天局时间平均预测航天飞机国际太空站新闻消息发射

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

Hybrid and Reflective Insulation Assemblies for Buildings

引用

Journal of Power and Energy Engineering 2016年第7期4卷 23-31页

作者： david W. Yarbrough Khar San Teh Lim Chin Haw Elias Salleh Sohif mat M. Yusof Sulaiman R&d Services Inc. Cookeville TN USA San Miguel Yamamura Woven Products Air Keroh Malaysia Solar Energy Research Institute (SERI) Universiti Kebangsaan Bangi Malaysia

materials with a low thermal emittance surface have been used for many years to create reflective insulations that reduce the rate of heat flow across building envelopes. Reflective insulation technology is now being combined with other energy conserving technologies to optimize overall thermal performance. The basis for the performance of reflective insulations and radiant barriers will be discussed along with the combination of these materials with cellular plastic or mineral fiber insulations to form hybrid insulation assemblies. Calculations of thermal resistance for enclosed reflective air spaces and current field data from Southeast Asia will be presented. These data show that reductions in heat transfer across the building enclosure can be effectively reduced by the use of enclosed reflective air spaces and attic radiant barriers. Reflective technology increases the overall thermal resistance of the building enclosure when used to insulate poured concrete structures.

关键词： Reflective Insulation Radiant Barrier Hybrid Insulation Emittance Emissivity Aluminum Foil Metallic Films Attic Insulation

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

Unboundedness properties of smoothness Morrey spaces of regular distributions on domains

引用

Science China mathematics 2017年第12期60卷 2349-2376页

作者： HAROSKE dorothee d. MOURA Susana d. SCHNEIdER Cornelia SKRZYPCZAK Leszek Institute of mathematics Friedrich Schiller University Jena CMUC Department of Mathematics University of Coimbra mathematics department Friedrich-Alexander University Erlangen-Nremberg Faculty of mathematics and Computer Science Adam Mickiewicz University

We study unboundedness of smoothness Morrey spaces on bounded domains ? ? R^n in terms of growth envelopes. It turns out that in this situation the growth envelope function is finite—in contrast to the results obtained by Haroske et al.(2016) for corresponding spaces defined on R^n. A similar effect was already observed by Haroske et al.(2017), where classical Morrey spaces M_(u,p)(?) were investigated. We deal with all cases where the concept is reasonable and also include the tricky limiting cases. Our results can be reformulated in terms of optimal embeddings into the scale of Lorentz spaces L_(p,q)(?).

关键词： Morrey spaces Besov spaces Triebel-Lizorkin spaces growth envelopes atomic decompositions inequalities

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

Single photo and electroproduction of pions at EBAC@JLAB

引用

Chinese Physics C 2009年第12期33卷 1296-1301页

作者： B. Juli-díaz department d'Estructura i Constituents de la matèria and Institut de Ciències del Cosmos Universitat de Barcelona E-08028 Barcelona Spain Excited Baryon Analysis Center (EBAC) Thomas Jefferson National Accelerator Facility Newport News VA 23606 USA

Within the Excited Baryon Analysis Center we have performed a dynamical coupled-channels analysis of the available p（e,e＇π）N data in the region of W ≤ 1.6 GeV and Q2 ≤1.45 （GeV/c）2. The channels included are γ＊N, π＊N, ηN, and ηN which has π△, pN, and σN components. With the hadronic parameters of the model determined in our previous investigations of πN→ πN reaction, we have found that the available data in the considered W ≤ 1.6 GeV region can be fitted well by only adjusting the bare γ＊N → N＊ helicity amplitudes for the lowest N＊ states in P33, P11, S11 and d13 partial waves. The meson cloud effect, as required by the unitarity conditions, on the γ＊N → N＊ form factors are examined.

关键词： meson electroproduction helicity amplitudes

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

Prenatal bisphenol A exposure impairs the aversive and spatial memory reduces the level of NMdA receptor subunits in the hippocampus of male Sprague dawley rats

引用

Brain Science Advances 2022年第1期8卷 57-69页

作者： Norazirah mat Nayan Andrean Husin Siti Hamimah Sheikh Abd Kadir Che Badariah Abd Aziz Musalmah Mazlan Rosfaiizah Siran Centre for Neuroscience Research(NeuRon) Faculty of MedicineUniversiti Teknologi MARASungai Buloh 47000SelangorMalaysia Institute of Molecular Medicine Biotechnology(IMMB) Faculty of MedicineUniversiti Teknologi MARASungai Buloh 47000SelangorMalaysia Faculty of dentistry Universiti Teknologi MARASungai Buloh 47000SelangorMalaysia Neuroscience Research Group(NRG) Faculty of MedicineUniversiti Teknologi MARASungai Buloh 47000SelangorMalaysia Faculty of Medicine Universiti Sains MalaysiaKubang Kerian 15200Kota Bharu KelantanMalaysia

Memory impairment in children is an ongoing issue worldwide related to a learning disability. This neurobiological condition has been suggested to associate with bisphenol A (BPA) exposure during pregnancy. BPA is an inorganic compound used to produce polycarbonate plastics and epoxy resins. We conduct this study to investigate the effects of prenatal BPA exposure on the level of the N-methyl-d-aspartate (NMdA) receptor subunits, synaptic markers of the hippocampus and neurobehavioral outcomes in rats. The pregnant rats were given a daily dose of 5 mg/kg and 50 mg/kg of BPA with 0.5% Tween 80 orally from gestation day 2 until 21 (Gd21). The level of GluN2A, GluN2B, PSd-95 and synapsin I in the hippocampus and its neurobehaviour outcomes were quantified and evaluated in the male foetus and adolescent rat. Prenatal BPA exposure reduced GluN2A, GluN2B, synapsin I and PSd-95 (Postsynaptic density-95) in the male foetus and adolescent rat hippocampus compared to the control group. The prenatal BPA exposed rats demonstrated anxiety-related behaviour and impairment in aversive and spatial memory. The findings suggested that the impairment in neurobehavioral performance may inhibit the signalling pathway in the NMdA receptor subunits in the male foetus rat hippocampus leading to learning and memory deficits when reaching adolescence.

关键词： bisphenol A memory NMdA receptor subunits neurobehavioral

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

Notch Severity Effect on Hydrogen Embrittlement of Type 4340 Steel

引用

Journal of materials Science & Technology 1996年第1期12卷 51-56页

作者： Liu, S Zhu, ZY Ke, W Hardie, d UNIV NEWCASTLE UPON TYNE DEPT MECH MAT & MFG ENGNNEWCASTLE TYNE TE1 7RUTYNE & WEARENGLAND

Hydrogen embrittlement of Type 4340 steel has been investigated by straining round-notched specimens in 10(5) Pa hydrogen atmosphere at a constent cross-head spead of 1.4x10(-4) mm/s. The circumferentially notched specimens exhibited a significant embrittlement when their mechanical behaviour in hydrogen was compared with that in air. Although the effect of notch depth on fracture strength in air is negligible, an increase in the depth of notch increase susceptibility to embrittlement when testing in gaseous hydrogen. However, analysis of the effects is complicated by the facts that (i) the specimens show some degree of notch severity even when strained in air and (ii) the behaviour is complicated by the localised plastic deformation that may occur for relatively shallow notches. Such effects are eliminated at high stress concentration factors, so there is a systematic loss in fracture stress in hydrogen as the notch sensitivity increases from K-t=2.6 to 5.7 (where a 87% reduction of fracture stress occurs) but a relatively stable value is then reached even for very severe notching by fatigue pre-cracking. Whether or not the effect is due to increasing concentration of hydrogen in the triaxial stress region ahead of the notch, there is no doubt that increasing the stress concentration makes hydrogen more effective as an embrittlement agent.

关键词： Carbon steel

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

马来西亚低强度割胶制度

引用

世界热带农业信息 1990年第3期 1-5页

作者： Ahmad Zarin Haji mat Tasi 吴贵洲

本文综述了马来西亚低强度割胶制度的试验结果。两种有前途的割制是:大胶园采用s/2,d/4刺激割制和小胶园采用s/4,d/2,(t,t)刺激割制。为了提高其效应,必须在开割时就用药,每月施用乙烯丰。采用d/4割制,刀数减少,有助于解决大胶园熟练胶... 详细信息

本文综述了马来西亚低强度割胶制度的试验结果。两种有前途的割制是:大胶园采用s/2,d/4刺激割制和小胶园采用s/4,d/2,(t,t)刺激割制。为了提高其效应,必须在开割时就用药,每月施用乙烯丰。采用d/4割制,刀数减少,有助于解决大胶园熟练胶工不足的问题;采用四分之一割面轮割制,有助于克服小胶园普遍存在耗皮量高的毛病。

关键词：乙烯丰割胶制度马来西亚刺激割制低频割制新无性系割面割线低强度累计产量

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：