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Gel immersion in endoscopy: Exploring potential applications.
World J Gastroenterol
January 2025
Department of Internal Medicine, Asahikawa Medical University, Asahikawa 078-8510, Hokkaido, Japan.
The challenge of effectively eliminating air during gastrointestinal endoscopy using ultrasound techniques is apparent. This difficulty arises from the intricacies of removing concealed air within the folds of the gastrointestinal tract, resulting in artifacts and compromised visualization. In addition, the overlap of folds with lesions can obscure their depth and size, presenting challenges for an accurate assessment.
View Article and Find Full Text PDFAnalysis of the Behavioral Change and Utility Features of Electronic Activity Monitors.
Technologies (Basel)
December 2020
Department of Nutrition and Metabolism, School of Health Professions, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555, USA.
The aim of this study was to perform a content analysis of electronic activity monitors that also evaluates utility features, code behavior change techniques included in the monitoring systems, and align the results with intervention functions of the Behaviour Change Wheel program planning model to facilitate informed device selection. Devices were coded for the implemented behavior change techniques and device features. Three trained coders each wore a monitor for at least 1 week from December 2019-April 2020.
View Article and Find Full Text PDFWe report on the design and fabrication of a novel circular pillar array as an interfacial barrier for microfluidic microphysiological systems (MPS). Traditional barrier interfaces, such as porous membranes and microchannel arrays, present limitations due to inconsistent pore size, complex fabrication and device assembly, and lack of tunability using a scalable design. Our pillar array overcomes these limitations by providing precise control over pore size, porosity, and hydraulic resistance through simple modifications of pillar dimensions.
View Article and Find Full Text PDFPhotobioreactor design utilizing procedural three-dimensional modelling and ray tracing.
J R Soc Interface
January 2025
Faculty of Information Technology, University of Jyväskylä, Jyvaskyla, Finland.
The design of photobioreactors for microalgae cultivation aims to achieve an architecture that allows the most efficient photosynthetic growth. The availability of light at wavelengths that are important for photosynthesis is therefore particularly crucial for reactor design. While testing different reactor types in practice is expensive, simulations could effectively limit the range of material and reactor design options.
View Article and Find Full Text PDFIn the realm of 3D measurement, photometric stereo excels in capturing high-frequency details but suffers from accumulated errors that lead to low-frequency distortions in the reconstructed surface. Conversely, light field (LF) reconstruction provides satisfactory low-frequency geometry but sacrifices spatial resolution, impacting high-frequency detail quality. To tackle these challenges, we propose a photometric stereoscopic light field measurement (PSLFM) scheme that harnesses the strengths of both methods.
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