Results 11 to 20 of about 576 (96)

Correction of Parallax Shift Effect Based on Cloud Top Height for FY-4A LMI

open access: gold
The Lightning Mapping Imager (LMI) onboard the Fengyun-4A (FY-4A) satellite is the first independently developed satellite-borne lightning imager in China. It enables continuous lightning detection in China and surrounding areas, regardless of weather conditions.
Yuansheng Zhang   +4 more
openaire   +2 more sources

Improving prediction of short-duration heavy rainfall in Guangxi, China during the pre-summer rainy season based on Fengyun-4A lightning frequency and a machine learning algorithm

open access: yesFrontiers in Earth Science
IntroductionThis study investigated the relationships between short-duration heavy rainfall (SDHR) events and lightning activity over Guangxi, China, during the pre-summer rainy season from 2019 to 2023.MethodsThe analysis was conducted using the ...
Weixiang Huang   +6 more
doaj   +2 more sources

Comparison of Lightning Detection Between Fy-4a Lmi and Nlmn in Guizhou, China

open access: green, 2023
Ankun Wu   +3 more
openaire   +2 more sources

SARS‐CoV‐2 infection and venous thromboembolism after surgery: an international prospective cohort study

open access: yesAnaesthesia, Volume 77, Issue 1, Page 28-39, January 2022., 2022
Summary SARS‐CoV‐2 has been associated with an increased rate of venous thromboembolism in critically ill patients. Since surgical patients are already at higher risk of venous thromboembolism than general populations, this study aimed to determine if patients with peri‐operative or prior SARS‐CoV‐2 were at further increased risk of venous ...
COVIDSurg Collaborative   +16163 more
wiley   +1 more source

Repeating Earthquakes at the Edge of the Afterslip of the 2016 Ecuadorian MW7.8 Pedernales Earthquake

open access: yesJournal of Geophysical Research: Solid Earth, Volume 126, Issue 5, May 2021., 2021
Abstract Repeating earthquakes repeatedly rupture the same seismic asperity and are strongly linked to aseismic slip. Here, we study the repeating aftershocks of the April 16, 2016 MW 7.8 Pedernales earthquake in Ecuador, which generated a large amount of afterslip.
Caroline Chalumeau   +20 more
wiley   +1 more source

A Global LIS/OTD Climatology of Lightning Flash Extent Density

open access: yesJournal of Geophysical Research: Atmospheres, Volume 126, Issue 8, 27 April 2021., 2021
Abstract Previous lightning climatologies derived from Lightning Imaging Sensor (LIS) and Optical Transient Detector (OTD) total lightning measurements have quantified lightning frequency as a Flash Rate Density (FRD). This approach assumes that lightning flashes can be represented as points and quantifies the frequency of lightning centered in each ...
Michael Peterson   +2 more
wiley   +1 more source

Robust Tracking Control for Rendezvous in Near‐Circular Orbits

open access: yesMathematical Problems in Engineering, Volume 2013, Issue 1, 2013., 2013
This paper investigates a robust guaranteed cost tracking control problem for thrust‐limited spacecraft rendezvous in near‐circular orbits. Relative motion model is established based on the two‐body problem with noncircularity of the target orbit described as a parameter uncertainty.
Neng Wan   +3 more
wiley   +1 more source

Coevolution of phyllosilicate, carbon, sulfide, and apatite in Ryugu's parent body

open access: yesMeteoritics &Planetary Science, Volume 59, Issue 8, Page 2073-2096, August 2024.
Abstract We analyzed an asteroid Ryugu sample returned to Earth by JAXA's Hayabusa2 mission using nanoIR, SEM, and TEM microscopy. We identified multiple distinct carbon reservoirs within the phyllosilicate matrix and demonstrate infrared spectral affinities for some of the carbon to insoluble organic matter (IOM).
Zack Gainsforth   +31 more
wiley   +1 more source

Surface‐Guided Crystallization of Xanthine Derivatives for Optical Metamaterial Applications

open access: yesAdvanced Materials, Volume 36, Issue 8, February 22, 2024.
Millimeter sized extremely birefringent thin crystalline sheets formed from the small organic molecules theophylline and etophylline with controlled orientation are grown from solution via epitaxy with a quartz substrate. The films are then used to fabricate flat polarization‐dependent optical metamaterials.
Angelica Niazov‐Elkan   +11 more
wiley   +1 more source

Estimation of Biomass Burning Emissions in South and Southeast Asia Based on FY-4A Satellite Observations

open access: yesAtmosphere
In recent years, frequent open biomass burning (OBB) activities such as agricultural residue burning and forest fires have led to severe air pollution and carbon emissions across South and Southeast Asia (SSEA).
Yajun Wang, Yu Tian, Yusheng Shi
semanticscholar   +1 more source
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