检索结果-南通市图书馆

Age and duration of intra-oceanic arc volcanism built on a suprasubduction zone type oceanic crust in southern Neotethys,se Anatolia

引用

Geoscience Frontiers 2013年第4期4卷 399-408页

作者： Fatih Karaoglan Osman Parlak Urs kltzli Friedrich Koller Tamer Rizaoglu Cukurova niversitesi.Jeoloji Mhendisligi Blm 01330 Balcali.Adana.Turkey University of Vienna.Centre for earth Sciences Kahramanmaras Stc Imam niversitesi Jeoloji Mhendisligi Blm46100 KahramanmarasTurkey

The southeastern Anatolia comprises numbers of tectono-magmatic]stratJgraphic units such as the metamorphic massifs, the ophiolites, the volcanic arc units and the granitoid rocks. All of them play important role for the late Cretaceous evolution of the southern Neotethys. The spatial and temporal relations of these units suggest the progressive development of coeval magmatism and thrusting during the late Cretaceous northward subduction/accretion. Our new U-Pb zircon data from the rhyolitic rocks of the wide-spread volcanic arc unit show ages of （83.1 ± 2.2）-（74.6 ± 4.4） Ma. Comparison of the ophiolites, the volcanic arc units and the granitoids suggest following late Cretaceous geological evolution. The ophiolites formed in a suprasubduction zone （SSZ） setting as a result of northward intra-oceanic subduction. A wide-spread island-arc tholeiitic volcanic unit developed on the top of the SSZ-type crust during 83 75 Ma. Related to regional plate convergence, northward under-thrusting of SSZ-type ophiolites and volcanic arc units was initiated beneath the Tauride platform （Malatya-Keban） and followed by the intrusion of I-type calc-alkaline volcanic arc granitoids during 84 82 Ma. New U-Pb ages from the arc-related volcanic-sedimentary unit and granitoids indicate that under-thrusting of ophiolites together with the arc-related units beneath the Malatya-Keban platform took place soon after the initiation of the volcanic arc on the top of the SSZ- type crust. Then the arc-related volcanic-sedimentary unit continued its development and lasted at - 75 Ma until the deposition of the late Campanian-Maastrichtian shallow marine limestone. The subduction trench eventually collided with the Bitlis-Pfitfirge massif giving rise to HP-LT meta- morphism of the Bitlis massif. Although the development of the volcanic arc units and the granitoids were coeval at the initial stage of the subduction/accretion both tectono-magmatic units were genetically different from each other.

关键词： Island-arcOphioliteGranitoidU-Pb geochronologySSZ settingse Anatolia

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

Reduced antioxidant level and increased oxidative damage in intact liver lobes during ischaemia-reperfusion

引用

World Journal of Gastroenterology 2006年第7期12卷 1086-1091页

作者： LászlóVáli Gabriella Taba kláraSzentmihályi HedvigFébel TímeaKurucz Zsolt Pallai PéterKupcsulik AnnaBlázovics Department of of Medicine Semmelweis UniversityBudapestHungary Chemical Research Center Hungarian Academy of Sciences Research Institute for Animal Breeding and Nutrition HerceghalomHungary Department of Surgery Semmelweis UniversityBudapestHungary

AIM： To determine whether increased blood flow of the liver can cause oxidative stress and hepatocyte damage, and to elaborate methods suitable for measuring the antioxidant defence during hepatic surgery on rat model.MeTHODS： In nembutal narcosis, the left lateral and the medial lobes of the liver were clipped for 45 rain to make the total blood supply flow through the other lobes. Total antioxidant status, glutathione peroxidase and superoxide dysmutase activity, as well as the concentrations of diene conjugates and free sulphydril groups, H-donating ability and reducing power of the liver samples were determined. Chemiluminescent intensity of the liver was also measured. Metal ions （Al, Ca, Cu, Fe, Mg, Mn, Zn） and P and S concentrations of the liver were determined with an inductively coupled plasma optical emission spectrometer and se content was measured by cathodic stripping voltammetry.ReSULTS： Glutathione peroxidase and superoxide dysmutase activities of the liver decreased significantly in the hyperemia group compared to those observed in the sham operated group. The level of total antioxidant status was also significantly lower in the hyperemia group. H-donating ability, reducing power and free sulphydril group concentration showed the same tendency. A significant correlation （P〈0.05） was found between the changes in non-specific antioxidant activities. This pointed to simultaneous activity of the antioxidant defence system. Al, Cu, Mn, Zn, and S were lower in the hyperemia group than in the sham operated group when the levels of Ca, Fe, Mg, se and P ions were higher during hyperemia.CONCLUSION： Oxidative stress is one of the main factors for the injury of intact liver lobes during ischaemia-reperfusion.

关键词： Free radicals Liver Oxidative stress Metal elements Redox-balance

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

单一指标不能预防经济灾害

引用

AMBIO－人类环境杂志 1999年第6期28卷 552-557页

作者： HokgerRootzén Claudia klüppelberg 程静 Department of Mathematical Statistics. Chalmers University of Technology SE-41396 Gothenburg Sweden Center for Mathematical Sciences Munich University of Technology D-80290 Munich Germany 中国科学院

数学和统计贯穿在世界金融市场每日的交易中。这就要求有一种新的方法来降低或防止风险,这种方法能提供重要的社会服务,但也能诱发有潜在巨额损失的特大赌博。文章讨论了一些可用作理解和防止突发灾难性金融风险的数学和统计方法。我们... 详细信息

数学和统计贯穿在世界金融市场每日的交易中。这就要求有一种新的方法来降低或防止风险,这种方法能提供重要的社会服务,但也能诱发有潜在巨额损失的特大赌博。文章讨论了一些可用作理解和防止突发灾难性金融风险的数学和统计方法。我们认为:对突发灾难性风险,均值不能意味任何事;单个的大型金融风险通常可以通过分散到不同的公司而加以更好的控制;风险的数字特征不能被归结到某一个单一指标中。我们还认为:在风险研究中,提高风险管理是大有潜力可挖的,因为风险研究中被当前作者所特别关注的极端评价理论,也许是个非常有用的工具。但改善不会自然生来,必须经历长期而艰辛的工作,在这个过程中,数学只是所有努力中的一部分。

关键词：金融市场经济灾害单一指标金融风险

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

不同的睡眠特征促成高血压的种族差异:芝加哥地区睡眠研究

引用

中华高血压杂志 2017年第6期25卷 598-598页

作者： Rasmussen-Torvik LJ De Chavez PJD Kershaw KN Montag se Knutson kl Kim KA Zee PC Carnethon MR 陈云叶鹏

已公认美国高血压的患病率存在种族差异。鉴于对各种族和民族间睡眠特征存在差异的理解，且已证实睡眠特征和高血压有关，该研究测试是否不同的睡眠特征会促成高血压的种族差异。方法：对芝加哥地区睡眠研究中纳入的无阻塞性睡眠呼吸暂... 详细信息

已公认美国高血压的患病率存在种族差异。鉴于对各种族和民族间睡眠特征存在差异的理解，且已证实睡眠特征和高血压有关，该研究测试是否不同的睡眠特征会促成高血压的种族差异。方法：对芝加哥地区睡眠研究中纳入的无阻塞性睡眠呼吸暂停的研究对象（154名非洲裔、128名欧洲裔、

关键词：睡眠特征种族差异高血压芝加哥阻塞性睡眠呼吸暂停患病率

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

mi R-122 negatively correlates with liver fibrosis as detected by histology and FibroScan

引用

World Journal of Gastroenterology 2015年第25期21卷 7814-7823页

作者： Tünde Halász Gábor Horváth Gabriella Pár klára Werling András Kiss Zsuzsa Schaff Gábor Lendvai second Department of Pathology Semmelweis University Department of Pathology Military Hospital Hepatology Center of Buda 1111 BudapestHungary First Department of Medicine University of Pécs second Department of Internal Medicine Semmelweis University MTA-se Tumor Progression Research Group Semmelweis University

AIM: To investigate whether expression of selected mi RNAs obtained from fibrotic liver biopsies correlate with fibrosis ***: Altogether, 52 patients were enrolled in the study representing various etiologic backgrounds of fibrosis: 24 cases with chronic hepatitis infections(types B, C), 19 with autoimmune liver diseases(autoimmune hepatitis, primary biliary cirrhosis, primary sclerosing cholangitis, overlapping syndrome cases), and 9 of mixed etiology(alcoholic and nonalcoholic steatosis, cryptogenic cases). severity of fibrosis was determined by both histologic staging using the MeTAVIR scoring system and noninvasive transient elastography. Following RNAisolation, expression levels of mi R-21, mi R-122, mi R-214, mi R-221, mi R-222, and mi R-224 were determined using Taq Man Micro RNA Assays applying mi R-140 as the reference. selection of mi RNAs was based on their characteristic up- or downregulation observed in hepatocellular carcinoma. Relative expression of mi RNAs was correlated with fibrosis stage and liver stiffness(LS) value measured by transient elastography, as well as with serum alanine aminotransferase(ALT) ***: The expression of individual mi RNAs showed deregulated patterns in stages F1-F4 as compared with stage F0, but only the reduced level of mi R-122 in stage F4 was statistically significant(P en analyzing mi RNA expression in relation to fibrosis, levels of mi R-122 and mi R-221 showed negative correlations with fibrosis stage, and mi R-122 was found to correlate negatively and mi R-224 positively with LS values(all P evels displayed a positive correlation with mi R-21(P egative correlations were observed in the fibrosis samples of mixed etiology between mi R-122 and fibrosis stage and LS values(P e samples of chronic viral hepatitis, between mi R-221 and fibrosis stage(P ereas mi R-21 showed positive correlation with ALT values in the samples of autoimmune live

关键词： expression FibroScan Liver fibrosis MeTAVIR microRNA miR-122

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

未控制高血压患者进行家庭血压监测与药剂师管理后的心血管事件及费用

引用

中华高血压杂志 2020年第11期28卷 1018-1018页

作者：赵狄(摘译) 刘莉(审校) Margolis kl Dehmer SP Sperl-Hillen J O’Connor PJ Asche se Bergdall AR Green BB Nyboer RA Pawloski PA Trower NK Maciosek MV 不详

未控制高血压是心血管病的主要病因。在16家初级保健诊所进行的整群随机试验结果表明:12个月的远程家庭血压监测与药剂师管理可较常规治疗24个月降压幅度更大。该文报道心血管事件(非致死性心肌梗死、非致死性脑卒中、心力衰竭住院、冠... 详细信息

未控制高血压是心血管病的主要病因。在16家初级保健诊所进行的整群随机试验结果表明:12个月的远程家庭血压监测与药剂师管理可较常规治疗24个月降压幅度更大。该文报道心血管事件(非致死性心肌梗死、非致死性脑卒中、心力衰竭住院、冠状动脉再血管化及心血管病死亡)与随访5年的花费。在远程干预组(TI组,n=228),10例患者发生15次心血管事件(5次心肌梗死、4次脑卒中、5次心力衰竭、1次心血管病死亡)。

关键词：心血管事件降压幅度家庭血压监测心血管病心力衰竭心肌梗死高血压患者保健诊所

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

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

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：