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Preclinical Experience Using 4D Intracardiac Echocardiography to Guide Cardiac Electrophysiology Procedures.
J Cardiovasc Electrophysiol
December 2024
Division of Cardiovascular Medicine, Cardiac Electrophysiology Section, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Introduction: Intracardiac echocardiography (ICE) is an essential imaging modality for electrophysiology procedures, allowing intraprocedural monitoring, real-time catheter manipulation guidance, and visualization of complex anatomic structures. Four-dimentional (4D) ICE is the next stage in the evolution of the technology, permitting 360° rotation of the imaging plane, simultaneous multiplanar imaging, and volumetric acquisition, similar to transesophageal echocardiography (TEE). In this study, we report our experience with a novel 4D ICE catheter (NuVision, Biosense Webster) in structural electrophysiology procedures and difficult ventricular ablations in a swine preclinical model.
View Article and Find Full Text PDFTuning Fluorescence Properties of BIM Probes via Clay Integration: Targeting Rifampicin with improved selectivity.
Chem Asian J
December 2024
Birla Institute of Technology & Science Pilani - Hyderabad Campus, Chemistry department, Shameerpet, 500078, Hyderabad, INDIA.
The incorporation of photoactive organic dyes into layered inorganic materials enhances their optical and chemical properties, making them ideal for sensing applications. In this study, Bisindolyl methane (BIM)-based neutral probes were integrated with bentonite clay to explore their sensing capabilities. Probe 1 (unoxidized BIM) and Probe 2 (oxidized BIM) generally exhibited quenched luminescence in solution due to intramolecular rotations.
View Article and Find Full Text PDFHighly Selective Construction of Unique Cyclic [4]catenanes ( 841 ) Induced by Multiple Noncovalent Interactions.
Angew Chem Int Ed Engl
December 2024
Luoyang Normal University, College of Chemistry and Chemical Engineering, CHINA.
The synthesis of high-ordered mechanically interlocked supramolecular structures is an extremely challenging topic. Only two linear [4]catenanes have been reported so far and there is no defined strategy to obtain cyclic [4]catenane. Herein, two unprecedented cyclic [4]catenanes, 1 and 2, were prepared in high yields.
View Article and Find Full Text PDFTunneling and conformational preferences in racemic- and meso-2,4-pentanediol: A rotational spectroscopic and theoretical investigation.
J Chem Phys
December 2024
Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
The rotational spectra of a mixture of 2,4-pentanediol (PDL) isomers, comprising both the meso isomers [(2R, 4S) and (2S, 4R)] and the racemic isomers [(2R, 4R) and (2S, 4S)], were recorded using a chirped-pulse Fourier transform microwave spectrometer coupled to a supersonic jet expansion. The conformational landscapes of meso- and racemic-PDL were examined using the Conformer-Rotamer Ensemble Sampling Tool and high-level quantum chemical calculations, generating 26 and 25 conformers, respectively. Five sets of rotational transitions were observed and assigned, with two attributed to meso-PDL and the remaining three attributed to racemic-PDL.
View Article and Find Full Text PDFA multispectral camera in the VIS-NIR equipped with thermal imaging and environmental sensors for non invasive analysis in precision agriculture.
HardwareX
December 2024
Department of Computer Science, University of Verona, Italy.
Multispectral imaging (MSI) is a technique used to inspect materials properties in different domains, ranging from industrial to medical and cultural heritage and, recently, precision agriculture. Even though several MSI solutions are already commercially available, the research community is working to optimize multispectral cameras in terms of performance and cost. Systems for the agricultural field are usually very compact, combined with drones for large areas acquisition.
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