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Evidence of a 4.33 billion year age for the Moon's South Pole-Aitken basin.
Nat Astron
October 2024
Department of Earth and Environmental Sciences, The University of Manchester, Manchester, UK.
The Moon's farside South Pole-Aitken (SPA) basin is the largest and oldest visible impact basin in the inner Solar System. Determining the timing of this catastrophic event is key to understanding the onset of the lunar basin-forming epoch, with implications for understanding the impact bombardment history of the inner Solar System. Despite this, the formation age of the SPA basin remains poorly constrained.
View Article and Find Full Text PDFDiverse and highly differentiated lava suite in Jezero crater, Mars: Constraints on intracrustal magmatism revealed by Mars 2020 PIXL.
Sci Adv
January 2025
School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA.
The Jezero crater floor features a suite of related, iron-rich lavas that were examined and sampled by the Mars 2020 rover Perseverance, and whose textures, minerals, and compositions were characterized by the Planetary Instrument for X-ray Lithochemistry (PIXL). This suite, known as the Máaz formation (fm), includes dark-toned basaltic/trachy-basaltic rocks with intergrown pyroxene, plagioclase feldspar, and altered olivine and overlying trachy-andesitic lava with reversely zoned plagioclase phenocrysts in a K-rich groundmass. Feldspar thermal disequilibrium textures indicate that they were carried from their crustal staging area.
View Article and Find Full Text PDFTemporal drivers of abundance and community structure of scyphozoan jellyfish in tropical coastal waters.
PeerJ
January 2025
Institute of Ocean and Earth Sciences, Universiti Malaya, Kuala Lumpur, Malaysia.
Population blooms of scyphozoan jellyfish in tropical shallow water regions can fuel localized fisheries but also negatively impact human welfare. However, there is a lack of baseline ecological data regarding the scyphozoans in the region, which could be used to manage a fast-growing fishery and mitigate potential impacts. Thus, this study aims to investigate the temporal factors driving the distribution of scyphozoan community along the environmental gradients under different monsoon seasons, rainfall periods, moon phases, and diel-tidal conditions in the Klang Strait located in the central region along the west coast of Peninsular Malaysia, where bloom events are increasing.
View Article and Find Full Text PDFRelation between magnetopause position and reconnection rate under quasi-steady solar wind dynamic pressure.
Earth Planets Space
December 2024
Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, SK Canada.
Unlabelled: The lunar environment heliospheric X-ray imager (LEXI) and solar wind-magnetosphere-ionosphere link explorer (SMILE) will observe the magnetopause motion in soft X-rays to understand dayside reconnection modes as a function of solar wind conditions after their respective launches in the near future. To support their successful science mission, we investigate the relationship between the magnetopause position and the dayside reconnection rate by utilizing super dual auroral radar network (SuperDARN) observations and widely used empirical models of magnetopause position (Shue et al. in J Geophys Res 103:17691-17700.
View Article and Find Full Text PDFQuality improvement initiative: use of the STOP-BANG score and monitoring to reduce adverse events in hospitalised patients at risk of obstructive sleep apnoea.
BMJ Open Qual
November 2024
Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.
Article Synopsis
- Obstructive sleep apnoea increases risks during sedation in hospitals, prompting the implementation of the STOP-BANG screening to ensure proper respiratory monitoring for patients receiving sedatives, narcotics, or anxiolytics.
- * The STOP-BANG measure was integrated into the admission process, requiring monitoring via pulse oximetry and capnography for patients scoring ≥3 who were prescribed sedatives or narcotics.
- * An analysis of over 250,000 patients showed that after implementing the protocol, mortality rates for those on sedatives decreased and monitoring was particularly beneficial for high-risk patients with STOP-BANG scores of 5 or more.
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