نتایج جستجو برای: while in wintertime

تعداد نتایج: 17006000  

2017
Yujiao Zhu Caiqing Yan Renyi Zhang Zifa Wang Mei Zheng Huiwang Gao Yang Gao Xiaohong Yao

This study is the first to use two identical Fast Mobility Particle Sizers for simultaneous measurement of particle number size distributions (PNSDs) at a street site and a rooftop site within 500 m distance in wintertime and springtime to investigate new particle formation (NPF) in Beijing. The collected datasets at 1 s time resolution allow deduction of the freshly emitted traffic particle si...

2015
STUART P. BISHOP FRANK O. BRYAN JUSTIN SMALL

Observational and model evidence has been mounting that mesoscale eddies play an important role in air– sea interaction in the vicinity of western boundary currents and can affect the jet stream storm track. What is less clear is the interplay between oceanic and atmospheric meridional heat transport in the vicinity of western boundary currents. It is first shown that variability in the North P...

1999
C. DAVID WHITEMAN XINDI BIAN

The diurnal variation of regional wind patterns in the complex terrain of the Grand Canyon area was investigated for wintertime fair weather days using a network of wind sensors on 10-m towers. Thermally driven alongslope and along-valley circulations were present at all sites within the region, but wind characteristics varied from site to site depending on nearby topography and exposure. Along...

2009
Mark W. Williams Peter Blanken

The importance of snow and related cryospheric processes as an ecological factor has been recognized since at least the beginning of the twentieth century. Even today, however, many observations remain anecdotal. The research to date on cold-lands ecosystems results in scientists being unable to evaluate to what extent changes in the cryosphere will be characterized by abrupt changes in local a...

Journal: :Proceedings of the Symposium on Global Environment 1999

Journal: :International journal of sport nutrition and exercise metabolism 2013
Pamela J Magee L Kirsty Pourshahidi Julie M W Wallace John Cleary Joe Conway Edward Harney Sharon M Madigan

BACKGROUND A high prevalence of vitamin D insufficiency/deficiency, which may impact on health and training ability, is evident among athletes worldwide. This observational study investigated the vitamin D status of elite Irish athletes and determined the effect of wintertime supplementation on status. METHODS Serum 25-hydroxyvitamin D [25(OH)D], calcium, and plasma parathyroid hormone were a...

2016
Yi-Hao Kang Ye-Hong Chen Qi-Cheng Wu Bi-Hua Huang Yan Xia Jie Song

We propose an effective and flexible scheme for reverse engineering of a Hamiltonian by designing the evolution operators to eliminate the terms of Hamiltonian which are hard to be realized in practice. Different from transitionless quantum driving (TQD), the present scheme is focus on only one or parts of moving states in a D-dimension (D ≥ 3) system. The numerical simulation shows that the pr...

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