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| 1 | Optically stimulated luminescence dating of aeolian sand in the Otindag dune field and Holocene climate change显示文摘The dune system in Otindag sand field of northern China is sensitive to climate change, where effective moisture and related vegetation cover play a controlling role for dune activity and stability. Therefore, aeolian deposits may be an archive of past environmental changes, possibly at the millennial scale, but previous studies on this topic have rarely been reported. In this study, thirty-five optically stimulated luminescence (OSL) ages of ten representative sand-paleosol profiles in Otindag sand field are ob-tained, and these ages provide a relatively complete and well-dated chronology for wet and dry varia-tions in Holocene. The results indicate that widespread dune mobilization occurred from 9.9 to 8.2 ka, suggesting a dry early Holocene climate. The dunes were mainly stabilized between 8.0 and 2.7 ka, implying a relatively wet climate, although there were short-term penetrations of dune activity during this wet period. After ~2.3 ka, the region became dry again, as inferred from widespread dune activity. The '8.2 ka' cold event and the Little Ice Age climatic deterioration are detected on the basis of the dune records and OSL ages. During the Medieval Warm Period and the Sui-Tang Warm Period (570-770 AD), climate in Otindag sand field was relatively humid and the vegetation was denser, and the sand dunes were stabilized again. These aeolian records may indicate climate changes at millennial time scale during Holocene, and these climatic changes may be the teleconnection to the climate changes elsewhere in the world. | Joseph MASON James SWINEHART Ronald GOBLE | 2008 | Science China Earth Sciences2008，51，6： | 18 |
| 2 | Limited change in dune mobility in response to a large decrease in wind power in semi-arid northern China since the 1970s显示文摘 | Joseph A. Mason James B. Swinehart Huayu Lu Xiaodong Miao Phueng Cha Yali Zhou | 2008 | Geomorphology2008，，3： | 1 |
| 3 | A randomized clinical trial of 5% topical minoxidil versus 2% topical minoxidil and placebo in the treatment of androgenetic alopecia in men显示文摘 | Elise A. Olsen Frank E. Dunlap Toni Funicella Judith A. Koperski James M. Swinehart Eduardo H. Tschen Ronald J. Trancik | 2002 | Journal of the American Academy of Dermatology2002，，3： | 1 |
| 4 | Evidence for Holocene environmental change from C/N ratios, and δ 13 C and δ 15 N values in Swan Lake sediments, western Sand Hills, Nebraska显示文摘 | Kamaleldin M. Hassan James B. Swinehart Roy F. Spalding | 1997 | Journal of Paleolimnology1997，，2： | 1 |
| 5 | A randomized clinical trial of 5% topical minoxidil versus 2% topical minoxidil and placebo in the treatment of androgenetic alopecia in men显示文摘 | Elise A. Olsen Frank E. Dunlap Toni Funicella Judith A. Koperski James M. Swinehart Eduardo H. Tschen Ronald J. Trancik | 2002 | Journal of the American Academy of Dermatology2002，，3： | 1 |
| 6 | 利用直接贯人法描述内布拉斯加州Sand Hills地区沙丘湖环境中含水层显示文摘直接贯入法(DP)是一种现行的快速描述地下浅部松散地层的方法,该方法结合了水文地质、岩土工程和地球物理手段。与传统的钻进技术和永久压力计技术相比,直接贯入法具有明显的优势,但需要在现场实时做出判断。在设计阶段如何选择实验次数、次序、位置及深度是成功和有效地开展野外研究的关键。然而,在文献中大量提供了多种基于水文地质、岩土工程和地球物理方法的直接贯入法的分析,而有关规划直接贯入现场应用的建议却很少。我们举例说明了用于评价有许多盐湖的内布拉斯加州Sand Hills内偏僻和不容易到达的区域含水层.盐湖界面的直接贯入法,这种方法结合了多种技术,包括含水层的电导率剖面测量、地下水采样、冲击试验和土壤取芯。除了有关水文地层和地下水盐度的基础数据之外,我们介绍了一种结合和优化直接贯入技术的方法,包括作业次序、深度限制、数据量和时序安排。本文中获得的数据和经验将有助于在其他沙丘湖环境中开展含水层描述的项目。 | VITALY A.ZLOTNIK MARK BURBACH JAMES SWINEHART 赵玉军(翻译) 叶成明(校对) | 2009 | 水文地质工程地质技术方法动态2009，，4： | 0 |
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