Background A simulation environment for magnetically-driven, active endoscopic capsules (Abu-Kheil Y, Seneviratne L, Dias J, A simulation environment for active endoscopic capsules. 2017 IEEE 30th international symposium on Computer Based Medical Systems (CBMS), Thessaloniki, pp 714-719, 2017), can perform four main operations: capsule tele- operation, tracking of a specific region of interest, haptic feedback for capsule navigation and virtual reality navigation.Methods The main operations of the simulation environment can be clinically evaluated. In this paper, we proposed a clinical evaluation for the main functions of the simulation environment. There main testing procedures for the navigation strategies are proposed; i) vision-based tele-operation, ii) vision/haptic-based navigation without head control, and iii) vision/haptic-based navigation with head control. The navigation ways can be compared with each other in terms of introduction time, visualization and procedure comfort. Human-subject studies are to be conducted in which 20 students and 12 expert gastroenterologists participated.
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http://dx.doi.org/10.1007/978-3-030-24230-5_4 | DOI Listing |
Bioinform Adv
December 2024
Structural and Computational Biology Group, Nutritional and Industrial Biochemistry Research Unit, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan 200005, Nigeria.
Motivation: Investigating novel drug-target interactions is crucial for expanding the chemical space of emerging therapeutic targets in human diseases. Herein, we explored the interactions of dipeptidyl peptidase-4 and protein tyrosine phosphatase 1B with selected terpenoids from African antidiabetic plants.
Results: Using molecular docking, molecular dynamics simulations, molecular mechanics with generalized Born and surface area solvation-free energy, and density functional theory analyses, the study revealed dipeptidyl peptidase-4 as a promising target.
Chem Sci
January 2025
Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering, Zhengzhou University Henan 450001 China
The exceptional oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performances of core-shell catalysts are well documented, yet their activity and durability origins have been interpreted only based on the static structures. Herein we employ a NiFe alloy coated with a nitrogen-doped graphene-based carbon shell (NiFe@NC) as a model system to elucidate the active structure and stability mechanism for the ORR and OER by combining constant potential computations, molecular dynamic simulations, and experiments. The results reveal that the synergistic effects between the alloy core and carbon shell facilitate the formation of Fe-N-C active sites and replenish metal sites when central metal atoms detach.
View Article and Find Full Text PDFIntroduction: Tuberculosis (TB) poses a significant threat to global health, with millions of new infections and approximately one million deaths annually. Various modeling efforts have emerged, offering tailored data-driven and physiologically-based solutions for novel and historical compounds. However, this diverse modeling panorama may lack consistency, limiting result comparability.
View Article and Find Full Text PDFJ Oral Microbiol
January 2025
Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, Shenzhen City, Guangdong, China.
Background And Objective: Oral bacteria can translocate to the intestine, and their colonization efficiency is influenced by the gastrointestinal tract pH. Understanding how oral bacteria resist acidic environments is crucial for elucidating their role in gut health and disease.
Methods: To investigate the mechanisms of acid resistance in oral bacteria, an in vitro gastrointestinal tract Dynamic pH Model was established.
Heliyon
January 2025
Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing, 100091, China.
Railway bridges with lower beam bottom clearances in windblown sand areas tend to accumulate sand particles on the sides of the beams, which seriously impacts railway safety. To investigate the effect of beam clearance height on wind-sand movement near the surface, and to determine the minimum clearance height for railway bridges in such areas, computational fluid dynamics using the Euler-Euler two-phase flow model was employed to simulate the wind-sand flow field beneath bridges with different heights. The results indicated that as clearance height increased, both the high-speed area above the bridge and acceleration area under the bridge increased, while the turbulence area on the leeward side remained unchanged.
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