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The pulsatile brain, pulse pressure, cognition, and antihypertensive treatments in older adults: a functional NIRS study.
J Hum Hypertens
January 2025
Research Centre, Montreal Heart Institute, Montreal, QC, Canada.
Age-related arterial stiffness increases pulsatility that reaches the cerebral microcirculation, compromises cerebrovascular health and lead to cognitive decline. The presence of cardiovascular risk factors (CVRFs) such as high blood pressure can exacerbate this effect. Despite extensive research on the impact of antihypertensive treatments on reducing arterial stiffness, little is known about the impact of antihypertensive treatments on pulsatility in cerebral microcirculation.
View Article and Find Full Text PDFSuperconducting quantum computing optimization based on multi-objective deep reinforcement learning.
Sci Rep
January 2025
School of Physics, Xi'an Jiaotong University, No.28 Xianning West Road, Xi'an, 710049, Shaanxi, P. R. China.
Deep reinforcement learning is considered an effective technology in quantum optimization and can provide strategies for optimal control of complex quantum systems. More precise measurements require simulation control at multiple experimental stages. Based on this, we improved a multi-objective deep reinforcement learning method in mathematical convex optimization theory for multi-process quantum optimal control optimization.
View Article and Find Full Text PDFTransient pulsed discharge preparation of graphene aerogel supports asymmetric Cu cluster catalysts promote CO electroreduction.
Nat Commun
January 2025
School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081, China.
Designing asymmetrical structures is an effective strategy to optimize metallic catalysts for electrochemical carbon dioxide reduction reactions. Herein, we demonstrate a transient pulsed discharge method for instantaneously constructing graphene-aerogel supports asymmetric copper nanocluster catalysts. This process induces the convergence of copper atoms decomposed by copper chloride onto graphene originating from the intense current pulse and high temperature.
View Article and Find Full Text PDFIonic liquid-delaminated TiC MXene nanosheets for enhanced electrocatalytic oxidation of tryptophane in normal and breast cancer serum.
Mikrochim Acta
January 2025
Department of Chemistry, Faculty of Basic Sciences, Ayatollah Boroujerdi University, Boroujerd, Iran.
A cost-effective strategy is reported utilizing ionic liquid (IL), 1-hexyl-3-methylimidazolium bisulfate ([HMIM] HSO), to delaminate TiC MXene, thereby enhancing its efficiency in electrocatalyzing tryptophan (Trp) oxidation. The positively charged IL effectively intercalates within the negatively charged MXene layers, fostering structural stability through π-π stacking and electrostatic interactions. Consequently, the resulting IL-TiC composite not only maintained the inherent electronic conductivity of TiC but also significantly augmented its electrocatalytic prowess.
View Article and Find Full Text PDFPredictors of Mortality in Venoarterial Extracorporeal Membrane Oxygenation Regardless of Early Left Ventricular Unloading: A National Experience.
J Cardiothorac Vasc Anesth
January 2025
Department of Anesthesia, Cardiothoracic Surgery/Cardiac ICU Section, Heart Hospital, Hamad Medical Corporation, Doha, Qatar; Department of Critical Care Medicine, Beni Suef University, Egypt; Weill Cornell Medical College, Doha, Qatar.
Objective: The use of an intra-aortic balloon pump (IABP) has been suggested to unload the left ventricle while on venoarterial extracorporeal membrane oxygenation (VA-ECMO) for cardiogenic shock (CS), leading to possibly improved in-hospital mortality. However, the predictors of mortality on dual mechanical circulatory support have not yet been evaluated, especially in real-world clinical settings. Therefore, a case-control study was conducted to determine the rate of all-cause mortality associated with VA-ECMO use regardless of left ventricular (LV) unloading, and with early LV unloading in the setting of CS, and to identify the predictors of mortality associated with VA-ECMO, with concurrent early LV unloading.
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