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Millennial-scale paleoceanography in Okinawa Trough during Late Quaternary period

Chinese Science Bulletin 1999年第18期44卷 1705-1709页

作者： F. Guichard G. Floch centre des faibles radioactivites FranceFrench Oceanographic Institute IFREMER France

Based on the analyses of foraminifer and accelerator mass spectrometer radiocarbon dating in DGKS9603 core from mid-Okinawa Trough close to bottom, oscillation curve, which expressed the relation between the surface water temperature and the depth, has been obtained by using foraminifer analysis and calculation of FP-12E transfer function. The whole core indicated seven cold phases and eight warm phases. Obvious expression of low

关键词： Okinawa Though Late Quaternary period paleoceanograph Heinrich Event.

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Paleoseismological Analysis Along the Astara Fault System(Talesh Mountain, North Iran)

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Acta Geologica Sinica(English Edition) 2017年第5期91卷 1553-1572页

作者： Amir BARZEGARI Manouchehr GHORASHI Hamid NAZARI Michel FONTUGNE Mohammad A. SHOKRI Mohsen POURKERMANI Department of geology North Tehran Branch Islamic Azad University Tehran Iran Research institute for earth sciences geological survey of Iran PO Box 13185 1494 Tehran Iran Center des faibles radioactivites (CNRS-CEA) Avenue de la Terrasse.F.91198 Gif-sur-Ycette CedexFrance Geologicalsurvey of Iran PO Box 13185 1494 Tehran Iran

The Astara Fault System（AFS） is located in the northwest Alborz, east of Talesh Mountain（TM） and west of the South Caspian Basin（SCB）. The AFS is one of the basement rock faults in Iran that is heavily involved in seismotectonic activity of the Talesh region, and to which subsidence of the SCB is attributed. There is little information available concerning previous AFS seismic activities and its properties. In order to elucidate the seismic behavior and activities of the AFS, we conducted a research study on paleoseismology of the fault. Based on paleoseismic evidence, two scenarios could be taken into consideration, one of which has three and another has four seismic events with magnitudes Mw in the range of 6.7 to 7.2. Evidence of these seismic events is within sedimentary succession as they have occurred during the past 3 ka（this age is determined based on the deposition rate of the region）. Six carbon samples were taken for C^14 age determination tests, the results of which clearly demonstrated that the EvIV（scenario A） and EvⅢ（scenario B） had occurred before 27,444 cal BP, while other events occurred in the time period between 27,444 cal BP and 3 ka ago. If we consider the occurrence of three or four seismic events（based on the two scenarios） to be between 27,444 cal BP and 3 ka ago, the average recurrence interval is 7,119 ± 1,017, but evidence for these events has been removed. If we assume EvI to be the youngest event（in both scenarios）, the minimum elapsed time is therefore 3 ka.

关键词： Paleoseismology morphotectonic active fault Astara fault system Iran

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Advancements,strategies,and prospects of solid oxide electrolysis cells(SOECs):Towards enhanced performance and large-scale sustainable hydrogen production

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Journal of Energy Chemistry 2024年第7期94卷 688-715页

作者： Amina Lahrichi Youness El Issmaeli Shankara S.Kalanur Bruno G.Pollet Green Hydrogen Lab(GH2Lab) Hydrogen Research Institute(HRI)Universitédu QuébecàTrois-Rivières(UQTR)3351 boulevard des ForgesTrois-RivièresQuébec G9A 5H7Canada

Solid oxide electrolysis cells(SOECs)represent a crucial stride toward sustainable hydrogen generation,and this review explores their current scientific challenges,significant advancements,and potential for large-scale hydrogen *** SOEC technology,the application of innovative fabrication tech-niques,doping strategies,and advanced materials has enhanced the performance and durability of these systems,although degradation challenges persist,implicating the prime focus for future *** we provide in-depth analysis of the recent developments in SOEC technology,including Oxygen-SOECs,Proton-SOECs,and ***,Hybrid-SOECs,with their mixed ionic conducting electrolytes,demonstrate superior efficiency and the concurrent production of hydrogen and *** with the capacity to harness waste heat,these advancements in SOEC technology present signif-icant promise for pilot-scale applications in *** review also highlights remarkable achieve-ments and potential reductions in capital expenditure for future SOEC systems,while elaborating on the micro and macro aspects of sOECs with an emphasis on ongoing research for optimization and *** concludes with the potential of SOEC technology to meet various industrial energy needs and its significant contribution considering the key research priorities to tackle the global energy demands,ful-fillment,and decarbonization efforts.

关键词： Solid oxide electrolysis cells Proton-SOECs Oxygen-SoECs Hybrid-SOECs Intermediate-high temperature electrolysers Hydrogenproduction

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铀系法测定钟乳石地质年龄可信度的讨论

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科学通报 1985年第6期30卷 453-455页

作者：沈冠军贵州省卫生防疫站法国 centre des faibles Radioactivités进修

铀系法的主要研究对象之一是钟乳石类碳酸盐。Rosholt等于1963年首次分析了八个钟乳石样品,发现230Th和231Pa普遍过剩,此现象被解释为体系形成后铀的迁移造成的。Cherdyndsev等在1965年报道了首批钟乳石的230Th/234U法年龄。他们用α谱... 详细信息

铀系法的主要研究对象之一是钟乳石类碳酸盐。Rosholt等于1963年首次分析了八个钟乳石样品,发现230Th和231Pa普遍过剩,此现象被解释为体系形成后铀的迁移造成的。Cherdyndsev等在1965年报道了首批钟乳石的230Th/234U法年龄。他们用α谱分别测铀和钍的薄源,通过β测量234Th,作化学回收的相对校正。尽管所得结果与地层研究吻合,但样品

关键词：钟乳石碳酸盐 Th 岩溶地貌碳化合物铀系法

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