NASA satellites have been providing forecasters with various types of imagery on Typhoon Amphan as it heads toward a landfall near the border of eastern India and Bangladesh on May 20.
NASA-NOAA's Suomi NPP satellite provided visible imagery of Amphan and NASA's Aqua satellite provided an infrared view of the storm's cloud top temperatures. Amphan was moving north through the Bay of Bengal and forecast to make landfall in northeastern India near Kolkata, which is just west of the border with Bangladesh.
From testing drugs to developing vaccines, the close study of the immune system is key to improving real-world health outcomes. T-cells are integral to this research, as these white blood cells help tailor the body's immune response to specific pathogens.
With lattice light-sheet microscopy (LLSM), scientists have been able to closely examine individual cells, such as T-cells, in 4D. But with limited data points, there wasn't an effective way to analyze the LLSM data.
DALLAS – May 20, 2020 – A new UT Southwestern study shows how an effective but largely abandoned treatment for Type 2 diabetes could be used again in combination with another drug to eliminate problematic side effects.
Buckling, the sudden loss of structural stability, is usually the stuff of engineering nightmares. Mechanical buckling means catastrophic failure for every structural system from rockets to soufflés. It's what caused the Deepwater Horizon oil spill in 2010, among numerous other disasters.
Fluctuations in the Pacific Walker circulation (PWC), a zonally-oriented overturning cell across the tropical Pacific, can cause widespread climatic and biogeochemical perturbations. It remains unknown how the PWC developed during the Cenozoic era, with its substantial changes in greenhouse gases and continental positions. Yan and colleagues examined the evolution of the PWC across the Cenozoic using a suite of coupled model simulations on tectonic timescales. During the Early Eocene (ca.
In recent years, topology has emerged as an important tool to classify and characterize properties of materials. It has been found that many materials exhibit a number of unusual topological properties, which are unaffected by deformations, e.g., stretching, compressing, or twisting. These topological properties include quantized Hall currents, large magnetoresistance, and surface excitations that are immune to disorder.
Organic field-effect transistors (OFETs) are the heart of plastic electronics. Doping has been proven to improve the performance of OFETs effectively. There are two major ways of doping OSCs.
The first strategy is bulk doping. Bulk doping involves the solution phase blending or vapor phase co-deposition of the dopants with the host OSCs. However, bulk doping introduces structural defects and energetic disorders in the host material, which reduces the mobility of the organic semiconductors.
The automatic operation and maintenance of optical network is important for ensuring information communication and network operation. The growing variety of services has forced operation and maintenance personnel to face tremendous operational pressure. A recent study has constructed a control architecture called intent defined optical networks (IDON) to cope with the issue.
H2O2 is an important commodity chemical and potential energy carrier, and is widely used for various environmental, medical and household applications. At present, about 99% H2O2 is produced from energy-intensive anthraquinone oxidation process. Its centralized production in this way produces highly concentrated H2O2 that often has to be distributed to and diluted at the site of use, bringing additional complexity and challenges. In addition, H2O2 can also be produced from the direct reaction between H2 and O2 in the presence of Pd-based catalysts.
Metal nanoclusters have been served as an emerging class of modular nanomaterials owing to their atomically precise structures, fascinating properties, and potential applications. The subject of cluster-based supramolecular assembly represents one of the most dynamic areas and has emerged recently as a new "growth point" in the nanocluster science. Such assemblies originate in different types of inter-cluster interactions such as chemical bonding, hydrogen bonding, electrostatic, van der Waals, π* * * π and C-H* * * π interactions.