Results 41 to 50 of about 43,857 (235)

Insight Into the Dynamics of the Rabinowitsch Fluid Through an Elliptic Duct: Peristalsis Analysis

open access: yesFrontiers in Physics, 2022
The current research is concerned with the mechanical characteristics of a Rabinowitsch fluid model that has been developed via an elliptic duct. If we study physiology or biomedicine, we will find that the Rabinowitsch fluid model in peristalsis is very
Sohail Nadeem   +3 more
doaj   +1 more source

Peristaltic Waves as Optimal Gaits in Metameric Bio-Inspired Robots

open access: yesFrontiers in Robotics and AI, 2018
Peristalsis, i.e., a motion pattern arising from the propagation of muscle contraction and expansion waves along the body, is a common locomotion strategy for limbless animals.
Daniele Agostinelli   +3 more
doaj   +1 more source

Mathematical Analysis of Mixed Convective Peristaltic Flow for Chemically Reactive Casson Nanofluid

open access: yesMathematics, 2023
Nanofluids are extremely beneficial to scientists because of their excellent heat transfer rates, which have numerous medical and industrial applications.
Humaira Yasmin, Zahid Nisar
doaj   +1 more source

The Vibrio type VI secretion system induces intestinal macrophage redistribution and enhanced intestinal motility

open access: yesmBio
Intestinal microbes, whether resident or transient, influence the physiology of their hosts, altering both the chemical and the physical characteristics of the gut. An example of the latter is the human pathogen Vibrio cholerae’s ability to induce strong
Julia S. Ngo   +6 more
doaj   +1 more source

The Effect of Biorelevant Hydrodynamic Conditions on Drug Dissolution from Extended-Release Tablets in the Dynamic Colon Model

open access: yesPharmaceutics, 2022
The in vitro release of theophylline from an extended-release dosage form was studied under different hydrodynamic conditions in a United States Pharmacopoeial (USP) dissolution system II and a bespoke in vitro tubular model of the human colon, the ...
Connor O’Farrell   +3 more
doaj   +1 more source

BIN1 and ALDH1B1 Deficiency in Colonic Smooth Muscle Drives Mitochondrial Dysfunction and Fibrosis in Slow‐Transit Constipation

open access: yesAdvanced Science, EarlyView.
Slow‐transit constipation (STC) is a disabling motility disorder with unclear smooth‐muscle mechanisms. Spatial proteomic analysis of STC patient colon reveals both the central pathogenic role of smooth muscle cells (SMCs) in STC and novel regulators of intestinal motility, BIN1 and ALDH1B1.
Jianbo Liu   +10 more
wiley   +1 more source

Transferable Deep Reinforcement Learning With Edge‐Contour‐Depth Fusion for Autonomous Wireless Capsule Endoscopy Navigation

open access: yesAdvanced Science, EarlyView.
This study presents an anatomical landmark‐guided DRL framework for autonomous wireless capsule endoscopy navigation. Using a lightweight edge‐contour‐depth fusion module, it achieves over 97% coverage across diverse gastric anatomies. To ensure reliability, a two‐stage sim‐to‐real pipeline with an adaptive dynamic programming controller mitigates ...
Haoxuan Wu   +16 more
wiley   +1 more source

Peristaltic transport of two-layered blood flow using Herschel–Bulkley Model

open access: yesCogent Engineering, 2018
The present article investigates the peristaltic transport of a Herschel–Bulkley fluid in an axisymmetric tube. The governing equations are solved using the long wavelength and small Reynolds number approximation.
C. Rajashekhar   +4 more
doaj   +1 more source

Analytical Solution of Electro-Osmotic Peristalsis of Fractional Jeffreys Fluid in a Micro-Channel

open access: yesMicromachines, 2017
The electro-osmotic peristaltic flow of a viscoelastic fluid through a cylindrical micro-channel is studied in this paper. The fractional Jeffreys constitutive model, including the relaxation time and retardation time, is utilized to describe the ...
Xiaoyi Guo, Haitao Qi
doaj   +1 more source

The Use of L-Menthol in Endoscopic Transpapillary Interventions. Prospective Randomized Dual-Center Study

open access: yesРоссийский журнал гастроэнтерологии, гепатологии, колопроктологии, 2023
Aim: to study the effect of L-menthol on duodenal peristalsis, the results of cannulation of the papilla, the effectiveness and safety of endoscopic retrograde transpapillary interventions (ERTI).Materials and methods. A prospective two-center randomized
M. A. Anishchenko   +8 more
doaj   +1 more source

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