Cardiology Department, St. Antonius Hospital, Nieuwegein, the Netherlands; Cardiology Department, Amsterdam UMC, Amsterdam, the Netherlands.
Published: August 2022
AI Article Synopsis
Article Abstract
Ultra-low temperature cryoablation (ULTC) is a novel ablation modality aiming to combine the effectiveness of surgical lesion delivery with percutaneous safety to improve outcomes in catheter ablations of atrial fibrillation, particularly in persistent AF (PsAF). In the Cryocure-2 study (NCT02839304) 78 patients (56.4% PsAF) received ULTC pulmonary vein isolation plus posterior wall ablation, and linear left and right atrial lesions as needed. The safety and acute success of ULTC appear consistent with current catheter ablation techniques and, together with Kaplan-Meier 85.9% 1-year freedom from AF observed in Cryocure-2 PsAF patients, warrant further evaluation in larger clinical trials, which are currently ongoing.
It is well known that metals and metal oxides with different crystal facets exhibit varying sensitivity in gas sensors, but this strategy is rarely used in metal-organic frameworks (MOFs). Herein, we proved for the first time that Cu metal-organic with high energy crystal facets (Cu-MOF-74-300) shows a much higher sensitivity than the low energy crystal facets (Cu-MOF-74-110), with a up to 2 times response more than Cu-MOF-74-110 and ultra-low limit of detection (LOD) of 68 ppb to toluene vapors. In addition, this strategy was further demonstrated on MOF-14 and HKUST-1, which are also Cu-centered and exhibit clear recognition effects on benzene and xylene, respectively.
Well-designed structures of the electrocatalyst provide excellent catalytic activity and high structural stability during the sulfur reduction reaction of Lithium-sulfur batteries (LSBs). In this study, a novel and efficient structure is developed to encapsulate bimetallic FeCo nanoalloy catalysts within N-doped carbon nanotube (NCNT) on carbon nanofibers (FeCo@NCNT/CNFs) using a combination of electrospinning and rapid-cooling techniques. The NCNT matrix with abundant sites not only serves as a high pathway for electron transport during the reaction, but its encapsulation structure also acts as armor to protect the FeCo nanoalloy.
A sustainable approach utilizing a low-temperature molten salt strategy is employed in this study to fabricate homogeneous and dense NiFe nitrate hydroxide needle-like arrays on a NiFe foam substrate. The electrode also achieves an ultra-low voltage of 1.77 V at 100 mA cm and maintains stability for more than 120 h at a current density of 100 mA cm, showing excellent overall water splitting (OWS) performance and stability.
The technology of powdered coal injection with recirculating flue gas and natural gas conditioning for reburning represents an advanced and innovative approach to enhancing the efficiency of coal powder reburning. By consuming excess oxygen in the recirculated flue gas, natural gas fosters an environment enriched with reducing agents, which stimulates the reactivity of reburning coal powder and augments its effectiveness in reducing nitrogen oxides (NO). This technology has been comprehensively investigated through experiments conducted in a segmented multi-reactor flow system, simulating conditions akin to those in industrial boilers.
State Key Laboratory of Precision Welding & Joining of Materials and Structures, Institute for Advanced Ceramics, Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150080, China.
Most thermal barrier coating materials exhibit transparent/semi-transparent properties at higher temperatures, causing the surface heat flow to directly heat the substrate with infrared radiation, which significantly reduces the thermal barrier effectiveness. Herein, composite ceramic materials composed of GdFeO diffusely dispersed within the GdTaO are produced. Specifically, the 0.
