نتایج جستجو برای: late plateau

تعداد نتایج: 220055  

2017
Ming-Li Zhang Xiao-Qing Zeng Stewart C Sanderson Vyacheslav V Byalt Alexander P Sukhorukov

The Tianshan Mountains play a significant role in the Central Asian flora and vegetation. Lagochilus has a distribution concentration in Tianshan Mountains and Central Asia. To investigate generic spatiotemporal evolution, we sampled most Lagochilus species and sequenced six cpDNA locations (rps16, psbA-trnH, matK, trnL-trnF, psbB-psbH, psbK-psbI). We employed BEAST Bayesian inference for datin...

2001
Joseph M. Licciardi Peter U. Clark Edward J. Brook Kenneth L. Pierce Mark D. Kurz David Elmore Pankaj Sharma

Cosmogenic 3He and 10Be ages measured on surface boulders from the moraine sequence deposited by the northern outlet glacier of the Yellowstone ice cap indicate that the outlet glacier reached its terminal position at 16.5 6 0.4 3He ka and 16.2 6 0.3 10Be ka, respectively. Concordance of these ages supports the scaled production rates used for 3He (118.6 6 6.6 atoms · g21 · yr21) and 10Be (5.1 ...

Journal: :Biology letters 2016
Juntao Zhu Yangjian Zhang Wenfeng Wang

Climate warming strongly influences reproductive phenology of plants in alpine and Arctic ecosystems. Here, we focus on phenological shifts caused by experimental warming in a typical alpine meadow on the Tibetan Plateau. Under soil water stress caused by warming, most plants in the alpine meadow advanced or delayed their reproductive events to be aligned with the timing of peak rainfall. As a ...

2013
P. Jeffrey Brantingham Gao Xing David B. Madsen David Rhode Charles Perreault Jerome van der Woerd John W. Olsen Steven L. Kuhn

1Department of Anthropology, University of California Los Angeles, Los Angeles, California 2Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China 3Texas Archaeological Research Lab, University of Texas, Austin, Texas 4Desert Research Institute, Reno, NV 5Department of Anthropology, University of Missouri, Columbia, Missouri 6Institut de Physique...

2017
Haibin Yu Yili Zhang Zhaofeng Wang Linshan Liu Zhao Chen Wei Qi

Phylogeographical studies have suggested that several plant species on the Tibetan Plateau (TP) underwent recolonization during the Quaternary and may have had distinct range dynamics in response to the last glacial. To further test this hypothesis and locate the possible historical dispersal routes, we selected 20 plant species from different parts of the TP and modeled their geographical dist...

Journal: :Remote Sensing 2016
Kaishan Song Min Wang Jia Du Yue Yuan Jianhang Ma Ming Wang Guangyi Mu

Satellite remote sensing provides a powerful tool for assessing lake water surface temperature (LWST) variations, particularly for large water bodies that reside in remote areas. In this study, the MODIS land surface temperature (LST) product level 3 (MOD11A2) was used to investigate the spatiotemporal variation of LWST for 56 large lakes across the Tibetan Plateau and examine the factors affec...

2014
Junsheng Nie Thomas Stevens Yougui Song John W. King Rui Zhang Shunchuan Ji Lisha Gong Danielle Cares

The monsoon is a fundamental component of Earth's climate. The Pliocene warm period is characterized by long-term global cooling yet concurrent monsoon dynamics are poorly known. Here we present the first fully quantified and calibrated reconstructions of separate Pliocene air temperature and East Asian summer monsoon precipitation histories on the Chinese Loess Plateau through joint analysis o...

Journal: :The Journal of Cell Biology 1978
G L Forrest R R Klevecz

Tyrosyltubulin ligase (TTL) was found to be present in CHO and V79 Chinese hamster cells grown in tissue culture. The enzyme is soluble and requires potassium, magnesium, and ATP for maximum activity and requires tubulin as a substrate. TTL was analyzed through the cell cycle of V79 and CHO Chinese hamster cells. The enzyme showed two peaks of activity in V79 cells at 4 h and 7 h after mitotic ...

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