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Diverse 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 PDFGold Single Atom Doped Defective Nanoporous Copper Octahedrons for Electrocatalytic Reduction of Carbon Dioxide to Ethylene.
ACS Nano
January 2025
Songshan Lake Materials Laboratory (SLAB), Dongguan 523808, P. R. China.
Electrocatalytic CO reduction into high-value multicarbon products offers a sustainable approach to closing the anthropogenic carbon cycle and contributing to carbon neutrality, particularly when renewable electricity is used to power the reaction. However, the lack of efficient and durable electrocatalysts with high selectivity for multicarbons severely hinders the practical application of this promising technology. Herein, a nanoporous defective AuCu single-atom alloy (De-AuCu SAA) catalyst is developed through facile low-temperature thermal reduction in hydrogen and a subsequent dealloying process, which shows high selectivity toward ethylene (CH), with a Faradaic efficiency of 52% at the current density of 252 mA cm under a potential of -1.
View Article and Find Full Text PDFSimulation of a Reverse Electrodialysis-Absorption Refrigeration Integration System for the Efficient Recovery of Low-Grade Waste Heat.
Membranes (Basel)
December 2024
Sonyo Refrigeration (Dalian) Co., Ltd., Dalian 116699, China.
The absorption refrigeration system (ARS) stands as a remarkable device that is capable of efficiently harnessing low-grade thermal energy and converting it into cooling capacity. The reverse electrodialysis (RED) system harvests the salinity gradient energy embedded in two solutions of different concentrations into electricity. An innovative RED-ARS integration system is proposed that outputs cooling capacity and electric energy, driven by waste heat.
View Article and Find Full Text PDFDevelopment and Validation of LAMP Assays for Distinguishing MPXV Clades with Fluorescent and Colorimetric Readouts.
Biosensors (Basel)
January 2025
School of Biomedical Sciences and Engineering, Koç University, 34450 Istanbul, Turkey.
Human monkeypox (Mpox) is a zoonotic disease caused by the Monkeypox virus (MPXV). As of 14 August 2024, the World Health Organization (WHO) has declared it a global health emergency. For Mpox, this was the second public health emergency of global significance in the past two years.
View Article and Find Full Text PDFAstragaloside IV inhibits retinal pigment epithelial cell senescence and reduces IL-1β mRNA stability by targeting FTO-mediated mA methylation.
Phytomedicine
January 2025
School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China; Department of Ophthalmology, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou 324000, China. Electronic address:
Background: Resistance to senescence in retinal pigment epithelial (RPE) cells can delay the progression of age-related macular degeneration (AMD). However, the mechanisms underlying RPE cell senescence remain inadequately understood, and effective therapeutic strategies are lacking. While astragaloside IV (Ast) has demonstrated anti-aging properties, its specific effects on RPE cell senescence and potential mechanisms are not yet fully clarified.
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