Results 161 to 170 of about 391,025 (405)

Nonenzymatic Carboxylate Phosphorylation in Water

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
The phosphorylation of carboxylic acids to acyl phosphates is a recurring reaction in the core of microbial metabolism, a set of processes thought to date back to the origins of life. This study shows that carboxylate phosphorylation occurs in water without enzymes or adenosine triphosphate (ATP), enabled by diamidophosphate and nitrite.
Weiqiang Chen   +3 more
wiley   +1 more source

Modeling and analysis approaches for small‐signal stability assessment of power‐electronic‐dominated systems

open access: yesWIREs Energy and Environment, Volume 12, Issue 1, January/February 2023., 2023
Application of small‐signal analysis tools for power‐electronic‐dominated systems. Abstract The stability, operation, and control of power networks have been challenged due to the increased penetration of power electronic converters. New instability phenomena have appeared due to the interaction of the power converter controllers with other power ...
Marc Cheah‐Mane   +5 more
wiley   +1 more source

ASTP simulated lightning test report [PDF]

open access: yes
A simulated lightning test was conducted on the backup spacecraft for the Apollo Soyuz Test Project mission (CSM-119) to determine the susceptibility of the Apollo spacecraft to damage from the indirect effects of lightning.
Blount, R. L.   +3 more
core   +1 more source

Where Are the Lightning Hotspots on Earth

open access: yes, 2015
Previous total lightning climatology studies using Tropical Rainfall Measuring Mission (TRMM) Lightning Imaging Sensor (LIS) observations were reported at coarse resolution (0.5°) and employed significant spatial and temporal smoothing to account for ...
R. Albrecht   +4 more
semanticscholar   +1 more source

Transcranial direct current stimulation treatment reduces, while repetitive transcranial magnetic stimulation treatment increases electroencephalography spike rates with refractory occipital lobe epilepsy: A case study

open access: yesEpilepsia Open, EarlyView.
Abstract Objective Non‐invasive brain stimulation has been suggested as an alternative/supplementary treatment for focal, refractory epilepsy. However, there are only a few studies and even fewer that directly compared transcranial direct current stimulation (tDCS) to repetitive transcranial magnetic stimulation (rTMS).
Tine Tronrud   +4 more
wiley   +1 more source

Characterizing Drivers of Asia's Black Elephant Disaster Risks

open access: yesEarth's Future, Volume 10, Issue 12, December 2022., 2022
Abstract Asia has the fastest growing population and economy, but it is also the most disaster‐prone region in the world. Resilience to disaster impacts from natural hazards will be key to the long‐term sustainability of this rapidly growing region. The first step to building resilience is to identify the key threats that this region faces. We describe
Yolanda C. Lin   +7 more
wiley   +1 more source

Evidence for lightning on Venus [PDF]

open access: yes
Lightning is an interesting phenomenon both for atmospheric and ionospheric science. At the Earth lightning is generated in regions where there is strong convection. Lightning also requires the generation of large charge-separation electric fields.
Strangeway, R. J.
core   +1 more source

Future Changes in Tropical Cyclone Exposure and Impacts in Southeast Asia From CMIP6 Pseudo‐Global Warming Simulations

open access: yesEarth's Future, Volume 10, Issue 12, December 2022., 2022
Abstract In this Pseudo‐global Warming study, potential future changes in the Southeast Asia tropical cyclone (TC) exposure climatology are quantified. One hundred and seventeen landfalling TCs in the last 20 years are simulated with their current climate conditions and also with the Coupled Model Intercomparison Project Phase 6 (CMIP6) ensemble ...
Thao Linh Tran   +4 more
wiley   +1 more source

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