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Experimental study on electrical conductivity of dunite at high temperature and pressure——The evidence of electrical conductivity of cold mantle in the Gaize-Lugu area

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Chinese Science Bulletin 2001年第24期46卷 2089-2092页

作者： WANG Duojun LI Heping LIU congqiang ZHAO Zhidan MO Xuanxue GUO Tieying SU Gengli DING Dongye Laboratory for Study on the Earth’s Interior and Geofluids Institute of GeochemistryChinese Academy of SciencesGuiyang 550002China Institute of Geochemistry Chinese Academy of SciencesGuiyang 550002China School of Earth Sciences and Land Resources China University of GeoscieneesBeijing 100083China

The electrical conductivities of the dunite from the Qinghai-Xizang (Tibetan) Plateau were measured with the impedance spectra method at 1.0-4.0 GPa and 643-1093 K. The experimental results indicated that activation enthalpies of the dunite are smaller than 0.9 eV, the conduction mechanism in dunite may be attributed to the mixed electrical conduction involving grain interiors and boundaries. On the basis of the results of this experiment, we can deduce that there exists cold mantle in the area of Gaize-Lugu in the Qinghai-Xizang (Tibetan) Plateau by reverse methods from the magnetotelluric sounding data (conductivity-depths profile) available for western Tibet. The result provides the present cold mantle viewpoint with strong proof on the basis of high temperature and pressure experiments.

关键词： high temperature and pressure dunite electrical con- ductivity conduction mechanism cold mantle.

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THE HAUSDORFF DIMENSION AND MEASURE IN GENERALIZED GEOMETRIC GRAPH DIRECTED conSTRUCTION

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数学物理学报（A辑） 1997年第S1期17卷 162-167页

作者：苏峰赵兴球湖北大学数学系湖北武汉

Abthors introduce the notation of generalized geometric constructions in Rm generated by a directed graph G and by a sequence of similarity ratios which are labelled with the edges of this graph. In this paper, it is ... 详细信息

关键词： Hausdorff dimension Hausdorff measure generalized graph dirceted con- struction

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Percutaneous panvascular intervention in an unusual case of extensive atherosclerotic disease

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World Journal of Cardiology 2012年第2期4卷 48-53页

作者： Rajesh Vijayvergiya Dheeraj Garg Saroj K Sinha Advanced Cardiac Centre Department of Cardiology Post Graduate Institute of Medical Education and Research Department of Gastroenterology Post Graduate Institute of Medical Education and Research

It is common to see patients with atherosclerotic coronary disease and peripheral arterial disease in routine clinical practice. One needs to have a comprehensive and integrated multi-speciality approach and panvascular revascularization in such patients. We report a 54-year-old diabetic hypertensive male with extensive atherosclerotic coronary and peripheral arterial disease, who presented with congestive heart failure, claudication of both lower limbs and mesenteric ischemia. He underwent successful percutaneous panvas- cular revascularization of coronary, renal, mesenteric, aorto-iliac and superficial femoral arteries. Long-term patency of all the stents was also documented.

关键词： Atherosclerosis Aorto-iliac bifurcation Coronary artery disease Chronic mesenteric ischemia con- trast induced nephropathy C-reactive protein Inferior mesenteric artery Peripheral arterial disease Stents

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