Results 41 to 50 of about 6,521,077 (382)

Analysis on the Cause of Cold and Warm Transition in Beijing- Tianjin-Hebei during November-December 2022

Gaoyuan qixiang
During November-December of 2022， the climate of Beijing-Tianjin-Hebei （BTH） showed significant cold and warm transition， and the average air temperature difference between November and December was 10.6 °C， ranked first with 1971 and 1980 since 1961 ...
Xuxu GAO, Shaojing CHE, Haoyu DU
doaj   +1 more source

Real-time observational evidence of changing Asian dust morphology with the mixing of heavy anthropogenic pollution

Scientific Reports, 2017
Natural mineral dust and heavy anthropogenic pollution and its complex interactions cause significant environmental problems in East Asia. Due to restrictions of observing technique, real-time morphological change in Asian dust particles owing to coating
Xiaole Pan, Itsushi Uno, Zhe Wang, Tomoaki Nishizawa, Nobuo Sugimoto, Shigekazu Yamamoto, Hiroshi Kobayashi, Yele Sun, Pingqing Fu, Xiao Tang, Zifa Wang   +10 more
doaj   +1 more source

Size-resolved source apportionment of particulate matter in urban Beijing during haze and non-haze episodes [PDF]

Atmospheric Chemistry and Physics, 2016
Additional size-resolved chemical information is needed before the physicochemical characteristics and sources of airborne particles can be understood; however, this information remains unavailable in most regions of China due to lacking measurement ...
S. L. Tian, Y. P. Pan, Y. S. Wang
doaj   +1 more source

Enhanced air pollution via aerosol-boundary layer feedback in China

Scientific Reports, 2016
Severe air pollution episodes have been frequent in China during the recent years. While high emissions are the primary reason for increasing pollutant concentrations, the ultimate cause for the most severe pollution episodes has remained unclear.
T. Petäjä, T. Petäjä, L. Järvi, V. Kerminen, A. Ding, Jianning Sun, W. Nie, W. Nie, J. Kujansuu, A. Virkkula, A. Virkkula, Xiuqun Yang, C. Fu, S. Zilitinkevich, M. Kulmala   +14 more
semanticscholar   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source

Haze pollution under a high atmospheric oxidization capacity in summer in Beijing: insights into formation mechanism of atmospheric physicochemical processes [PDF]

Atmospheric Chemistry and Physics, 2020
Under a high atmospheric oxidization capacity, the synergistic effect of the physicochemical processes in the atmospheric boundary layer (ABL) caused summer haze pollution in Beijing.
D. Zhao, D. Zhao, G. Liu, G. Liu, J. Xin, J. Xin, J. Xin, J. Quan, Y. Wang, X. Wang, L. Dai, W. Gao, G. Tang, B. Hu, Y. Ma, X. Wu, L. Wang, Z. Liu, F. Wu   +18 more
doaj   +1 more source

The asymptotic equivalence of fixed heat flux and fixed temperature thermal boundary conditions for rapidly rotating convection

, 2015
The influence of fixed temperature and fixed heat flux thermal boundary conditions on rapidly rotating convection in the plane layer geometry is investigated for the case of stress-free mechanical boundary conditions. It is shown that whereas the leading
Calkins, Michael A., Driggs, Derek, Hale, Kevin, Julien, Keith, Marti, Philippe, Nieves, David   +5 more
core   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Impacts of additional HONO sources on O3 and PM2.5 chemical coupling and control strategies in the Beijing–Tianjin–Hebei region of China [PDF]

Tellus: Series B, Chemical and Physical Meteorology, 2015
The objective of this work is to examine the impacts of additional HONO sources on the chemical interaction between ozone (O3) and particulate matter with a diameter≤2.5 µm (PM2.5). Three additional HONO sources, i.e.
Ying Li, Junling An, Mizuo Kajino, Ismail Gultepe, Yong Chen, Tao Song, Jinyuan Xin   +6 more
doaj   +1 more source

On Reflection of Shock Waves from Boundary Layers [PDF]

, 1952
Measurements of the reflection characteristics of shock waves from a flat surface with a laminar and turbulent boundary layer are presented. The investigations were carried out at Mach numbers from about 1.3 to 1.5 and a Reynolds number of 0.9 x 10^4.
Dhawan, S., Liepmann, H. W., Roshko, A.
core   +1 more source