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Irregular Narrow QRS Tachycardia: What Is the Mechanism?
J Cardiovasc Electrophysiol
December 2024
Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan.
Long-term outcomes of extracardiac Gore-Tex conduits in Fontan patients.
Int J Cardiol Congenit Heart Dis
June 2024
Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
Background: Extracardiac conduit Fontan procedure (ECFP) employing a Gore-Tex conduit has been widely used for patients with single ventricle physiology; however, the long-term status of the conduit is unknown. We investigated the changes in a Gore-Tex conduit after ECFP and the factors associated with its narrowing.
Methods: We conducted a retrospective analysis of 86 patients who underwent ECFP between January 1995 and December 2008 and had cardiac computed tomography (CT) during the follow-up period.
Regioselective Copolymerization of Glucose-Derived Allopyranoside Epoxide with Cyclic Anhydrides: Developing Precise Sugar-Functionalized Polyesters with Unique Altrose Linkages.
J Am Chem Soc
December 2024
Polymer Synthesis Laboratory, Laboratory, Chemistry Program, KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
Uniform sugar-functionalized polyesters combine the benefits of sugar's structural diversity, biocompatibility, and biodegradability with precise postfunctionalization capabilities, making them a highly valuable class of materials with extensive application potential. However, the irregular placement of hydroxyl groups has limited the synthesis of these polyesters. Here, we present the first platform for uniform sugar-functionalized polyesters via regioselective ring-opening copolymerizations (ROCOPs) of allopyranoside anhydrosugar epoxide (, derived from d-glucose) with cyclic anhydrides, followed by complete selective deprotection.
View Article and Find Full Text PDFTime-decay patterns and irregular disturbance: contrasting roles of abundant and rare microbial communities in dynamic coastal seawater.
Appl Environ Microbiol
December 2024
Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao, China.
Unlabelled: Microbial communities in coastal seas experience strong environmental disturbances, yet their response patterns, especially regarding differently abundant subcommunities, remain poorly understood. Here, through 16S rRNA gene amplicon sequencing, we investigated the diversity, time-decay pattern, and assembly process of abundant, conditionally rare taxa (CRT) and rare microbial subcommunities in temperate coastal waters over 60 consecutive weeks. The abundant (50.
View Article and Find Full Text PDFA multi-task framework for breast cancer segmentation and classification in ultrasound imaging.
Comput Methods Programs Biomed
December 2024
Artificial Intelligence Center, Universidad de Oviedo, Gijón, 33204, Spain. Electronic address:
Background: Ultrasound (US) is a medical imaging modality that plays a crucial role in the early detection of breast cancer. The emergence of numerous deep learning systems has offered promising avenues for the segmentation and classification of breast cancer tumors in US images. However, challenges such as the absence of data standardization, the exclusion of non-tumor images during training, and the narrow view of single-task methodologies have hindered the practical applicability of these systems, often resulting in biased outcomes.
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