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3篇 您的检索式:作者名="Jessica KELLEY"
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1Application of Avaatech X-ray fluorescence core-scanning in Sr/Ca analysis of speleothems显示文摘Application of X-ray fluorescence core-scanning(XRF-CS) on both marine and lake sediments has achieved remarkable results. However, its application has not been widely extended to the research on speleothems. In this study, we measure the Sr abundance and the Sr/Ca ratios of three stalagmites(two aragonite stalagmites, one calcite stalagmite) using the state-of-the-art fourth-generation Avaatech high-resolution XRF core scanner. Through comparisons among different scan paths and among different scan resolutions, as well as comparisons with inductively coupled plasma optical emission spectrometer(ICP-OES), Itrax XRF, and Artax XRF results, we confirm that the Avaatech XRF core scanner could precisely, quickly, and nondestructively analyze the high-resolution Sr abundance of speleothems. Furthermore, we combine the stalagmite δ^(18)O records to explore the paleoclimatic significance of the measured stalagmite Sr/Ca.Dong LI Liangcheng TAN Fei GUO Yanjun CAI Youbin SUN Gang XUE Xing CHENG Hong YAN Hai CHENG R.Lawrence EDWARDS Yongli GAO Jessica KELLEY 2019Science China Earth Sciences2019,62,6:7
2Avaatech XRF岩芯扫描分析方法在石笋Sr/Ca测试中的应用显示文摘XRF岩芯扫描分析方法在海洋和湖泊沉积环境变化方面的应用研究,已取得了显著的成果.然而,目前其应用还没有广泛拓展到洞穴石笋的研究中.在本文中,我们利用最先进的第四代Avaatech高分辨率XRF岩芯扫描仪测试了3根石笋(2根文石石笋, 1根方解石石笋)的Sr元素以及Sr/Ca比值.通过不同扫描路径之间和不同扫描分辨率之间的对比,以及与ICP-OES、Itrax XRF和Artax XRF结果的对比,证实了Avaatech XRF岩芯扫描仪可以准确、快速、无损地进行石笋高分辨率Sr元素的测试.此外,我们还结合石笋氧同位素记录,尝试解释了所测石笋Sr/Ca的古气候意义.李东 谭亮成 郭飞 蔡演军 孙有斌 薛刚 成星 晏宏 程海 R.Lawrence EDWARDS 高永利 Jessica KELLEY 2019中国科学:地球科学2019,49,6:6
3Electrocardiographic ST-segment Changes during Acute, Severe Isovolemic Hemodilution in Humans显示文摘Jacqueline M. Leung Richard B. Weiskopf John Feiner Harriet W. Hopf Scott Kelley Maurene Viele Jeremy Lieberman Jessica Watson Mariam Noorani Darwin Pastor Hooi Yeap Rachel Ho Pearl Toy 2000Anesthesiology2000,,4:1
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