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The development of non-noble metal catalysts for the optimization of conversion and storage devices is an important research topic. Hence, the microsphere MoO/MoC/C heterojunction composites, which play an important role in the oxygen reduction reaction (ORR) and the hydrogen evolution reaction (HER), were synthesized using the solvothermal-sintering method. The results revealed that the as-prepared composite exhibited better ORR and HER catalytic performances than those of MoO/MoC and Vulcan XC-72R (carbon black), and approaching that of commercial Pt/C. At the same time, it has a superior methanol tolerance and electrochemical stability than that of the commercial Pt/C. The excellent performance may be attributed to the synergistic effect of the MoO/MoC heterostructure, highly conductive Vulcan XC-72R, and oxygen vacancies (O). This research offers new insights into the design and synthesis of cost-effective, environmentally friendly heterojunction composite catalysts used as a high-performance cathode material in fuel cells and water splitting.
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http://dx.doi.org/10.1039/d3dt02537c | DOI Listing |
Physiol Rep
September 2025
School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada.
The present investigation sought to determine the cardiovascular responses to a commercially available KAATSU cuff system with rhythmic cuff inflation-deflation periods during leg exercise. Seventeen participants performed two-legged knee flexion/extension exercise at 25% of peak work rate (WR) with bilateral KAATSU cuffs applied to the proximal thigh (KAATSU) or work-rate matched control exercise (CTL). During KAATSU trials, the cuffs were set to Cycle Mode (repeated 30-s inflation; 5-s deflation) at progressively increasing cuff pressure (150-220 mmHg).
View Article and Find Full Text PDFMicrobes Environ
September 2025
Sustainable Process Engineering Center, Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya.
Nitrifying communities in activated sludge play a crucial role in biological nitrogen removal processes in municipal wastewater treatment plants. While extensive research has been conducted in temperate regions, limited information is available on nitrifiers in tropical regions. The present study investigated all currently known nitrifying communities in two full-scale municipal wastewater treatment plants in Malaysia operated under low-dissolved oxygen (DO) (0.
View Article and Find Full Text PDFJ Am Coll Cardiol
September 2025
Service de Médecine Intensive-Réanimation, Institut de Cardiologie, Assistance Publique-Hôpitaux de Paris (AP-HP), Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France; Sorbonne Université, INSERM, UMRS_1166-ICAN, Institute of Cardiometabolism and Nutrition, Paris, France.
Background: The hemodynamic effects of femoro-femoral venoarterial (VA) extracorporeal membrane oxygenation (ECMO) on pulmonary capillary wedge pressure (PCWP) remain poorly defined. High ECMO flow is believed to increase PCWP and the risk of pulmonary edema; yet, supporting in vivo physiological data are lacking.
Objectives: The purpose of this study was to evaluate the impact of incremental femoro-femoral VA-ECMO flow variations on PCWP, hemodynamic, and echocardiographic parameters in patients with cardiogenic shock during the early phase of VA-ECMO support, after stabilization.
Exp Gerontol
September 2025
Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA; Salk Institute for Biological Studies, La Jolla, CA, 92037, USA; Department of Molecular Biology, University of Utah, Salt Lake City, UT, USA; Department of Biochemistry, University of Utah, Salt Lake Ci
Aging is the greatest risk factor for cardiovascular diseases (CVD) and is characterized by inflammation, oxidative stress, and cellular senescence. Cellular senescence is a state of persistent cell cycle arrest triggered by stressors such as DNA damage and telomere attrition. Senescent endothelial cells (ECs) can impair vascular function and promote inflammation, thereby contributing to CVD progression.
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
Strategic Research Center for Smart Battery, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea. Electronic address:
Advancing impactful, economical, and durable Co-based bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) has been crucial in developing sustainable energy technologies. In this work, Co and CoN nanoparticles (NPs)-incorporated S, N-doped carbon catalysts (Co/CoN/SNC) were prepared via direct pyrolysis of the CoDATT complex, exhibiting high bifunctional electrocatalytic performance for ORR and OER. The complex precursor, CoDATT, was synthesized for the first time using diaminoterthiophene (DATT) and CoCl.
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