Results 21 to 30 of about 1,288,747 (259)

Towards an intraoperative feedback system for laparoscopic access with the Veress needle

Current Directions in Biomedical Engineering, 2021
About 50 % of complications during laparoscopy occur when surgical access is created. The Veress needle and proposed technical alternatives do not provide reliable information to support the surgeons in guiding the needle, or the feedback is not clearly ...
Spiller Moritz, Esmaeili Nazila, Sühn Thomas, Boese Axel, Turial Salmai, Friebe Michael, Illanes Alfredo   +6 more
doaj   +1 more source

Measurement and Analysis of Inadequate Friction Mechanisms in Liquid-Buffered Mechanical Seals Utilizing Acoustic Emission Technique

Vibration, 2021
Mechanical seals play an important role in the reliability of a process. Currently, the condition monitoring of mechanical seals is restricted due to the limitations of the traditional monitoring methods, including classical vibration analysis.
Manuel Medina-Arenas, Fabian Sopp, Johannes Stolle, Matthias Schley, René Kamieth, Florian Wassermann   +5 more
doaj   +1 more source

Estimation of Fine and Oversize Particle Ratio in a Heterogeneous Compound with Acoustic Emissions

Sensors, 2018
The final phase of powder production typically involves a mixing process where all of the particles are combined and agglomerated with a binder to form a single compound.
Ejay Nsugbe, Cristobal Ruiz-Carcel, Andrew Starr, Ian Jennions   +3 more
doaj   +1 more source

Correlation analysis between ceramic insulator pollution and acoustic emissions

TecnoLógicas, 2015
Most of the studies related to insulator pollution are normally performed based on individual analysis among leakage current, relative humidity and equivalent salt deposit density (ESDD).
Benjamín Álvarez-Nasrallah, John E. Candelo-Becerra, Jose D. Soto-Ortiz, Julio Pombo-Acevedo, Omar Díaz-Aparicio   +4 more
doaj   +1 more source

A PVDF Receiver for Acoustic Monitoring of Microbubble-Mediated Ultrasound Brain Therapy

Sensors, 2023
The real-time monitoring of spectral characteristics of microbubble (MB) acoustic emissions permits the prediction of increases in blood–brain barrier (BBB) permeability and of tissue damage in MB-mediated focused ultrasound (FUS) brain therapy.
Yi Lin, Meaghan A. O’Reilly, Kullervo Hynynen   +2 more
doaj   +1 more source

Review of the Uses of Acoustic Emissions in Monitoring Cavitation Erosion and Crack Propagation

Foundations
Nowadays, hydropower plants are being used to compensate for the variable power produced by the new fluctuating renewable energy sources, such as wind and solar power, and to stabilise the grid.
Ismael Fernández-Osete, David Bermejo, Xavier Ayneto-Gubert, Xavier Escaler   +3 more
doaj   +1 more source

Soil moisture enhances the vibrations induced by moving earthworms, especially of detritivoresSoil moisture enhances the vibrations induced by moving earthworms, especially of detritivores [PDF]

Royal Society Open Science
Earthworms (Lumbricidae) are moisture-loving soil-dwellers that can be categorized into two feeding guilds with distinct behaviours: detritivores and geophages.
Renée Veenstra, Wouter Halfwerk, Mohamed Henriques, Jurgen van Hal, Matty P. Berg, Theunis Piersma   +5 more
doaj   +1 more source

Early Detection and Identification of Fatigue Damage in Thrust Ball Bearings by an Acoustic Emission Technique

Lubricants, 2020
As rolling bearings are widely used in various machines, there is a strong need to detect any problems as early as possible. Although vibration analysis is commonly used in the diagnosis of rolling bearings, it is possible that the failure of such ...
Alan Hase
doaj   +1 more source

An Edible Chitosan‐Based Acoustic Sensor for Sound‐Responsive Actuation in Edible Robots

Advanced Functional Materials, EarlyView.
This study introduces an edible acoustic sensor for robotic food and edible robotics. Built from a chitosan piezoelectric film between gold electrodes, the sensor enables acoustic communication through ON/OFF keying. Integrated into an edible robot with pneumatically actuated arms and neck, it responds to high‐frequency tones.
Valerio Francesco Annese, Bokeon Kwak, Gaia de Marzo, Giulia Coco, Valentina Antonaci, Leonardo Lamanna, Massimo De Vittorio, Dario Floreano, Mario Caironi   +8 more
wiley   +1 more source

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source