29 Works

A Coupled Fluid-structure Model of a Therapeutic Ultrasound Angioplasty Wire Waveguide

Graham Gavin, Finbar Dolan, M.S. Hashmi & Garrett McGuinness
Ultrasonic longitudinal displacements, delivered to the distal tips of small diameter wire waveguides, have been shown to be capable of disrupting complicated atherosclerotic plaques during vascular interventions. These ultrasonic displacements can disrupt plaques by direct contact ablation but also by pressure waves, associated cavitation and acoustic streaming developed in the surrounding blood and tissue cavities. The pressure waves developed within the arterial lumen appear to play a major role but are complex to predict as...

Ultrasonic Angioplasty: Assessing the Risk of Arterial Perforation

Mark Wylie, Garrett McGuinness & Graham Gavin

Development of a Numerical Model to Simulate Pressure Distributions in Ultrasound Angioplasty

Graham Gavin, Garrett McGuinness, Finbar Dolan & M.S. Hashmi

Development and Performance Characteristics of an Ultrasound Angioplasty Device

Graham Gavin, Garrett McGuinness & M.S. J Hashmi

Implications of the Hall Effect for Turbulent Molecular Clouds

Turlough Downes & Stephen O'Sullivan

A Novel Protocol for Inter-vehicular Video Transmission

Kevin O'Flynn, Hrishikesh Venkataraman & Gabriel-Miro Muntean

Efficient UWB Indoor Localisation Using a Ray-tracing Propagation Tool

Tam Huynh & Conor Brennan

Supplemental Material, sj-pdf-1-ojs-10.1177_23259671221125159 - Movement Variability and Loading Characteristics in Athletes With Athletic Groin Pain: Changes After Successful Return to Play and Compared With Uninjured Athletes

Samuel Baida, Enda King, Shane Gore, Chris Richter, Andrew Franklyn-Miller & Kieran Moran
Supplemental Material, sj-pdf-1-ojs-10.1177_23259671221125159 for Movement Variability and Loading Characteristics in Athletes With Athletic Groin Pain: Changes After Successful Return to Play and Compared With Uninjured Athletes by Samuel Baida, Enda King, Shane Gore, Chris Richter, Andrew Franklyn-Miller and Kieran Moran in Orthopaedic Journal of Sports Medicine

The neuroscience of trust violation: Differential activation of the default mode network in ability, benevolence and integrity breaches

Lisa van der Werff, DEIRDRE O'SHEA, Graham Healy, Finian Buckley, Colette Real, Michael Keane & Theo Lynn
Trust is widely regarded as being foundational in workplace relationships. The violation of interpersonal trust results in a range of negative affective, cognitive and behavioural consequences for the injured party. However, research has yet to isolate the specific neural areas and processes activated when different types of interpersonal trust are breached. Using electroencephalogram with 68 participants, we identified the effects of three distinct types of trust violations—ability violation, integrity violation and benevolence violations—on electrical brain...

Power Save-based Adaptive Multimedia Delivery Mechanism

David McMullin, Ramona Trestian & Gabriel-Miro Muntean

Lattices in Finite Real reflection Groups

Thomas Brady & Colum Watt

The neuroscience of trust violation: Differential activation of the default mode network in ability, benevolence and integrity breaches

Lisa van der Werff, DEIRDRE O'SHEA, Graham Healy, Finian Buckley, Colette Real, Michael Keane & Theo Lynn
Trust is widely regarded as being foundational in workplace relationships. The violation of interpersonal trust results in a range of negative affective, cognitive and behavioural consequences for the injured party. However, research has yet to isolate the specific neural areas and processes activated when different types of interpersonal trust are breached. Using electroencephalogram with 68 participants, we identified the effects of three distinct types of trust violations—ability violation, integrity violation and benevolence violations—on electrical brain...

A repeated cross‐sectional analysis of breastfeeding initiation rates in Ireland for two decades and 10 recommended priorities for improvement

Roy K. Philip, Aubree Worobetz, Helen Byrt, Irene Beirne, Raeghnya Zutshi, Tanya Cassidy & COLUM DUNNE
Despite a number of public health and policy‐based initiatives, Ireland's national breastfeeding rates are among the lowest globally. Regionally, the Mid‐West of Ireland has historically had low breastfeeding initiation rates, and parts of its major urban area such as Limerick City suffer the highest levels of economic deprivation in the country. In that context, this repeated cross‐sectional study analysed breastfeeding initiation trends in the Mid‐West of Ireland for two decades, from 2001 to 2020 inclusively....

Pressure Distribution around Spherical Distal Ball-tip in Ultrasound Angioplasty

Graham Gavin, Garrett McGuinness, Finbar Dolan & M.S. J Hashmi

High-power Low-frequency Ultrasound: a Review of Tissue Dissection and Ablation in Medicine and Surgery

Brendan O'Daly, Edmund Morris, Graham Gavin, John O'Byrne & Garrett McGuinness
High-power low-frequency ultrasound in the range 20–60 kHz has wide ranging clinical applications in surgical and medical instruments for biological tissue cutting, ablation or fragmentation, and removal. Despite widespread clinical application and common device operating characteristics, there is an incomplete understanding of the mechanism of tissue failure, removal and damage. The relative contribution of cavitation, direct mechanical impact and thermal effects to each process for specific tissue types remains unclear. Different and distinct mechanisms and...

A Project-Based-Learning Approach to Teaching Second-Order Differential Equations to Engineers

Michael Carr & Eabhnat Ni Fhloinn

Sensing Learner Interest Through Eye Tracking

Haolin Wei, Arthir-Nicolae Moldovan & Cristina Muntean

Numerical Modeling of Weakly Ionized Plasmas

Stephen O'Sullivan & Turlough Downes

Supplemental Material, sj-pdf-1-ojs-10.1177_23259671221125159 - Movement Variability and Loading Characteristics in Athletes With Athletic Groin Pain: Changes After Successful Return to Play and Compared With Uninjured Athletes

Samuel Baida, Enda King, Shane Gore, Chris Richter, Andrew Franklyn-Miller & Kieran Moran
Supplemental Material, sj-pdf-1-ojs-10.1177_23259671221125159 for Movement Variability and Loading Characteristics in Athletes With Athletic Groin Pain: Changes After Successful Return to Play and Compared With Uninjured Athletes by Samuel Baida, Enda King, Shane Gore, Chris Richter, Andrew Franklyn-Miller and Kieran Moran in Orthopaedic Journal of Sports Medicine

A Numerical Acoustic Fluid-structure Model of a Therapeutic Ultrasound Angioplasty Device

Graham Gavin, M.S. J Hashmi, Finbar Dolan & Garrett McGuinness

A Numerical Acoustic Fluid-structure Simulation of Therapeutic Ultrasound Angioplasty

Graham Gavin, Finbar Dolan, M.S J Hashmi & Garrett McGuinness
INTRODUCTION Therapeutic ultrasound angioplasty is the delivery of high amplitude ultrasonic displacements to the distal-tip of small diameter wire waveguides with the goal of disrupting atherosclerotic plaques. This is a minimally invasive procedure that may have potential' in the treatment of complicated chronic total occlusions. The disruption of plaque is due to direct contact ablation and also cavitation, pressure waves and acoustic streaming in the fluid surrounding the vibrating waveguide distal-tip [1]. Cavitation appears to...

Design Issues for Therapeutic Ultrasound Angioplasty Waveguides

Graham Gavin, Declan Noone & Garrett McGuinness
Therapeutic ultrasound angioplasty is a new minimally invasive cardiovascular procedure for disrupting atherosclerotic lesions. Mechanical energy is transmitted in the form of ultrasound waves via long, flexible wire waveguides navigated to the lesion site through the vascular system. The underpinning principle of this technology is that plaque may be disrupted through a combination of direct contact ablation, pressure waves, cavitation and acoustic streaming, which all depend on the amplitude and frequency of displacements at the...

An Acoustic Fluid-structure Simulation of a Theraputic Ultrasound Wire Waveguide Apparatus

Graham Gavin, M.S. Hashmi, Finbar Dolan & Garrett McGuinness

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