Results 101 to 110 of about 2,513,508 (291)

Deep Learning Model for Precipitation Nowcasting Based on Residual and Attention Mechanisms

Remote Sensing
Nowcasting is a critical technology for disaster prevention and mitigation, and the accuracy of radar echo extrapolation directly impacts forecasting performance.
Zhan Zhang, Qingping Song, Minzheng Duan, Hailei Liu, Juan Huo, Congzheng Han   +5 more
doaj   +1 more source

A consistent molecular hydrogen isotope chemistry scheme based on an independent bond approximation [PDF]

, 2009
The isotopic composition of molecular hydrogen (H₂) produced by photochemical oxidation of methane (CH₄) and Volatile Organic Compounds (VOCs) is a key quantity in the global isotope budget of (H<sub>2 ...
Sub Atmospheric physics and chemistry, M. C. Krol, G. Pieterse, T. Röckmann, Krol, M.C., Pieterse, G., Afd Marine and Atmospheric Research, Marine and Atmospheric Research, Röckmann, T.   +8 more
core   +3 more sources

β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations

Advanced Biology, Volume 9, Issue 3, March 2025.
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio, B. Spedicato, G. Corallo, A. Inguscio, M. Greco, D. Musarò, D. Vergara, A. F. Muro, G. De Sabbata, L. R. Soria, N. Brunetti Pierri, M. Maffia   +11 more
wiley   +1 more source

Charge Structure and Lightning Discharge in a Thunderstorm Over the Central Tibetan Plateau

Geophysical Research Letters
The evolution of charge structure involved in lightning discharge of a thunderstorm over the central Tibetan Plateau is investigated for the first time, based on the data from very high frequency interferometer, radar and sounding.
Dongxia Liu, Fengquan Li, Xiushu Qie, Zhuling Sun, Yu Wang, Shanfeng Yuan, Chunfa Sun, Kexin Zhu, Lei Wei, Huimin Lyu, Rubin Jiang   +10 more
doaj   +1 more source

A multi-location joint field observation of the stratosphere and troposphere over the Tibetan Plateau

Earth and Planetary Physics, 2019
The unique geographical location and high altitude of the Tibetan Plateau can greatly influence regional weather and climate. In particular, the Asian summer monsoon (ASM) anticyclone circulation system over the Tibetan Plateau is recognized to be a ...
JinQiang Zhang, Yi Liu, HongBin Chen, ZhaoNan Cai, ZhiXuan Bai, LingKun Ran, Tao Luo, Jing Yang, YiNan Wang, YueJian Xuan, YinBo Huang, XiaoQing Wu, JianChun Bian, DaRen Lu   +13 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

An Observational and Model Characterization of Vertical Structure of Wind Fields over Eastern United States: A Case Study of Sterling, Virginia

Advances in Meteorology, 2016
The performance of twenty GCMs that participated in the Coupled Model Intercomparison Phase 5 (CMIP5) is evaluated at Sterling, Virginia, by comparing model outputs with radiosonde observational dataset and reanalysis dataset.
Sium Gebremariam, Belay Demoz, Churchill Okonkwo, Ricardo K. Sakai   +3 more
doaj   +1 more source

A Theoretical Analysis for Improving Aerosol-Induced CO₂ Retrieval Uncertainties Over Land Based on TanSat Nadir Observations Under Clear Sky Conditions

Remote Sensing, 2019
Aerosols significantly affect carbon dioxide (CO2) retrieval accuracy and precision by modifying the light path. Hyperspectral measurements in the near infrared and shortwave infrared (NIR/SWIR) bands from the generation of new greenhouse gas satellites (
Xi Chen, Yi Liu, Dongxu Yang, Zhaonan Cai, Hongbin Chen, Maohua Wang   +5 more
doaj   +1 more source

Sources of uncertainties in modelling black carbon at the global scale [PDF]

, 2010
Our understanding of the global black carbon (BC) cycle is essentially qualitative due to uncertainties in our knowledge of its properties. This work investigates two source of uncertainties in modelling black carbon: those due to the use of different ...
J. Wilson, E. Vignati, M. Krol, Karl, M., Cavalli, F., Vignati, E, Cavalli, F, M. Karl, Marine and Atmospheric Research, P. Stier, Wilson, J., Stier, Philip, Vignati, E., F. Cavalli, Wilson, J, Sub Atmospheric physics and chemistry, Krol, M., Krol, M.C., Karl, M, Stier, P., Krol, M   +20 more
core   +3 more sources