检索结果-南通市图书馆

The impact of crustal rheology on natural seismicity: Campi Flegrei caldera case study

Geoscience Frontiers 2019年第2期10卷 453-466页

作者： R.Castaldo L.D'Auria S.pepe G.Solaro V.De Novellis p.tizzani Istituto per il Rilevamento Elettromagnetico dell'Ambiente (IREA)-Consiglio Nazionale delle Ricerche (CNR) Instituto Volcanológico de Canarias (INVOLCAN) Instituto Tecnológico y de Energías Renovables (ITER)

We analyze the crustal rheology beneath the active resurgent Campi Flegrei caldera(CFc) in Southern Italy by modelling the 3 D brittle-ductile(B/D) transition, based on available thermal, geological and geophysical data. Firstly, the thermal field in the conductive physical regime is modeled using a finite element method; based on an optimization tool, this method is applied to evaluate the location and dimensions of the deep thermal source beneath the caldera. A horizontally-extended thermal anomaly located at about 5000 m depth below sea level is identified beneath pozzuoli Bay, a part of the CFc. The same isotherm is located at a depth of 20,000 m beyond the caldera. This indicates a higher horizontal temperature gradient in the caldera with respect to the surrounding area. Next, we utilize this thermal model to image the 3D rheological stratification of the shallow crust below the caldera with two different values of strain rates. Within the caldera, the B/D transitions with ε equal to 10^(-12) s^(-1) and 10^(-8) s^(-1) are located at 3000 m and 5000 m depths, respectively. Outside the caldera, the transition is very deep(15,000-20,000 m), seemingly uninfluenced by the thermal state of the CFc volcanism. Finally, we compare these results with the spatial distribution of earthquake hypocenters, Benioff strain release and b-value distribution to investigate the relationship between crustal rheology and seismicity characteristics. Our analysis reveals that the image of the B/D transition is in agreement with the distribution of earthquake hypocenters, constraining the potential seismogenic volume of the region. Our study demonstrates that knowledge of the rheological state of a volcanic system is an important element to interpret its dynamic, forecast future activity and improve evaluation of the associated seismic hazard.

关键词： Brittle-ductile transition Seismicity cut-off Geothermal measurements FE conductive thermal modelling Campi Flegrei caldera

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

Does kidney transplantation onto the external iliac artery affect the haemodynamic parameters of the cavernosal arteries？

引用

Asian Journal of Andrology 2012年第4期14卷 621-625页

作者： paolo Gontero Marco Oderda Claudia Filippini Francesco Fontana Elisa Lazzarich piero Stratta Ernesto Turello Alessandro tizzani Bruno Frea Department of Urotogy-l A.O.U.S. Giovanni Battista University of Turin Turin 10126 Italy Department of Anesthesiology A.O.U.S. Giovanni Battista University of Turin Turin 10126 Italy Department of Urology Vercelli Hospital Verceili 13100 Italy Department of Nephrology and Kidney Transplant University of Eastern Piedmont Maggiore della Carita Hospital Novara 28100 Italy Department of Urology University of Udine Udine 33100 Italy

Reduced cavernosal arterial inflow has been hypothesized to be the likely cause of erectile dysfunction after kidney transplants in recipients revascularized through end-to-end anastomosis to the internal lilac artery, suggesting that end-to-side anastomosis at the external iliac artery is preferable. The aim of this study was to prospectively evaluate the effect of the use of the external iliac artery on erectile function, hormone profiles and penile blood flow by evaluating changes in penile colour Doppler ultrasound parameters in a consecutive series of 22 recipients before and after end-to-side external lilac artery transplantation. The mean International Index of Erectile Function-Erectile Function （IIEF-EF） domain score decreased significantly 3 months after transplant （18.09±6.33 vs. 22.50±7.09, p=O.01）. The reduction in peak systolic velocity （pSV） was significant for the cavernous artery homolateral to the side of transplant （42.60±18.77 vs. 52.01±19.91, p=0.01）. The mean postoperative end diastolic velocity （EDV） did not differ significantly from the preoperative value （p=0.74）. No statistical differences were found in the serum levels of testosterone or prolactin. Kidney grafts anastomosed at the external lilac artery produced significant （p=0.01） reductions in arterial inflow at the homolateral cavernosal artery that remained above the normal threshold. Whether these haemodynamic changes can explain the worsening of postoperative erectile function remains to be proven.

关键词： cavernosal arteries Doppler erectile dysfunction external iliac artery kidney transplant

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

初级保健中原发性醛固酮增多症的患病率和临床表现

引用

中华高血压杂志 2017年第5期25卷 482-484页

作者： Monticone S Burrello J tizzani D Bertello C Viola A Buffolo F Gabetti L Mengozzi G Williams TA Rabbia F Veglio F Mulatero p 练桂丽叶鹏机构不详

原发性醛固酮增多症（primaryaldosteronism，pA）是一种异质性疾病，以高血压和相对自主于肾素血管紧张素系统产生过量醛固酮为特征。与心血管病风险相似的原发性高血压患者相比，pA患者发生心脑血管并发症的风险以及代谢综合征患病率... 详细信息

原发性醛固酮增多症（primaryaldosteronism，pA）是一种异质性疾病，以高血压和相对自主于肾素血管紧张素系统产生过量醛固酮为特征。与心血管病风险相似的原发性高血压患者相比，pA患者发生心脑血管并发症的风险以及代谢综合征患病率增加，提示正确诊断pA的重要性。

关键词：原发性醛固酮增多症患病率临床表现初级保健原发性高血压患者肾素血管紧张素系统心脑血管并发症异质性疾病

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

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

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：