Zobrazeno 1 - 10
of 37 230
pro vyhledávání: '"S. CHENG"'
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 6, Pp 1306-1321 (2024)
The Reynolds number (Re) is an important parameter that can affect compressor performance. This study experimentally and numerically investigated the effect of Re variations on the efficiency and stall mechanisms for a three-stage axial flow compress
Externí odkaz:
https://doaj.org/article/82479d23a7cb433192388f2897207b5f
Publikováno v:
Mechanical Sciences, Vol 15, Pp 195-207 (2024)
A systematic improvement of the multi-robot formation control algorithm has been developed to address multi-robot formation instability. First, a static obstacle avoidance model based on spring force mapping is proposed, followed by an analysis of th
Externí odkaz:
https://doaj.org/article/964cf70a6499400a910d8af14cdc30b2
Autor:
Y. Zhang, J. Lin, J. Kim, H. Lee, J. Park, H. Hong, M. Van Roozendael, F. Hendrick, T. Wang, P. Wang, Q. He, K. Qin, Y. Choi, Y. Kanaya, J. Xu, P. Xie, X. Tian, S. Zhang, S. Wang, S. Cheng, X. Cheng, J. Ma, T. Wagner, R. Spurr, L. Chen, H. Kong, M. Liu
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 4643-4665 (2023)
Tropospheric vertical column densities (VCDs) of nitrogen dioxide (NO2) retrieved from sun-synchronous satellite instruments have provided abundant NO2 data for environmental studies, but such data are limited by retrieval uncertainties and insuffici
Externí odkaz:
https://doaj.org/article/b12be232832545228700d14aa21186f2
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 23, Pp 1755-1768 (2023)
The occurrence of forest fires can impact vegetation in the ecosystem, property, and human health but also indirectly affect the climate. The Joint UK Land Environment Simulator – INteractive Fire and Emissions algorithm for Natural envirOnments (J
Externí odkaz:
https://doaj.org/article/afc71e73cf904053b1f4b2a8298053b9
Autor:
Q. X. Guo, Z. C. Zheng, L. H. Wang, K. Wang, X. M. Wang, S. Cheng, W. He, G. H. Yu, H.-W. Lee, Y. Q. Guo, J. Teng, T. Zhu
Publikováno v:
APL Materials, Vol 11, Iss 11, Pp 111126-111126-8 (2023)
We demonstrate the spin–orbit torque (SOT) induced perpendicular magnetization switching in an annealed W/CoFeB/Zr/MgO multilayer with high thermal stability. It is found that the thermal stability factor can reach 79 after annealing at 540 °C. Wi
Externí odkaz:
https://doaj.org/article/30e613eb32224991b325b9ef4874dfc6
Publikováno v:
The Cryosphere, Vol 17, Pp 1735-1754 (2023)
Advanced data assimilation (DA) methods, widely used in geophysical and climate studies to merge observations with numerical models, can improve state estimates and consequent forecasts. We interface the deterministic ensemble Kalman filter (DEnKF) t
Externí odkaz:
https://doaj.org/article/8aeaaf717ff94658a2d95ee89789ec05
Autor:
S. Cheng, X. Cheng, J. Ma, X. Xu, W. Zhang, J. Lv, G. Bai, B. Chen, S. Ma, S. Ziegler, S. Donner, T. Wagner
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 3655-3677 (2023)
The tropospheric concentrations of nitrogen dioxide (NO2) and formaldehyde (HCHO) have high spatio-temporal variability, and in situ observations of these trace gases are still scarce, especially in remote background areas. We made four similar circl
Externí odkaz:
https://doaj.org/article/0a42e015d6f24baa808a7a0ce755850f
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 10045-10059 (2022)
This paper reveals the dynamic movement characteristics of thunderstorms using total lightning data obtained from very low- and low-frequency (VLF/LF) location measurements. Eight thunderstorms, which were evenly distributed in the morning, midday, a
Externí odkaz:
https://doaj.org/article/aa24fd2601cb48898f71253597dcf05c
Publikováno v:
International Journal of Infectious Diseases, Vol 130, Iss , Pp S61-S62 (2023)
Intro: COVID-19 vaccines against the earlier strains of SARS-CoV-2 are now available. However, breakthrough infections can still occur due to waning antibodies and immune escape by new variants. We assessed humoral immune responses to the mRNA (BNT16
Externí odkaz:
https://doaj.org/article/1fb89d6e7ff84475a29ff464ead18be1
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLIII-B2-2022, Pp 531-538 (2022)
Three-dimensional imaging demonstrates advantages over traditional methods and has already proven feasible for measuring antler growth. However, antlers' velvet-covered surface and irregular structure pose challenges in efficiently obtaining high-qua
Externí odkaz:
https://doaj.org/article/a4c67872a44d4cc883253131de3daf68