Search

Your search keyword '"Kevin Terry"' showing total 5 results
Start Over Author "Kevin Terry" Language english
5 results on '"Kevin Terry"'

1. Terrys in Spain and Latin-America: Exile and Rise of an Irish Merchant Family

Author

Beatriz García-Álvarez de la Villa and Kevin Terry

Subjects
History, Terry, Merchant, Exile, Genealogy, Irish Americans, Irish Spanish, History of Great Britain, DA1-995, Language and Literature
Abstract

This paper examines a Cork merchant family, Terry, with particular attention to the causes of their exile to Spain about 1700. Their significant sway in the civic and commercial affairs of Cork City at the beginning of the 17th century, and their downfall by the mid 17th century due to the impact on Catholic families of The Cromwellian Wars are detailed. After their exile to Spain, the success of this Irish family is linked to the recognition by the Spanish crown of their proofs of nobility, and the rights they gained to trade with the Indies. Their descendants quickly rose to influential positions in Spain and in South America where they moved to during the 18th century.

Published
2016

2. A study of membrane swelling and transport mechanisms in solvent resistant nanofiltration

Author

Cliff, Kevin Terry

Subjects
660.2842, PDMS, Nanofiltration, Membrane swelling, Dense membrane, Catalyst, Polymer slab
Abstract

Recently a large amount of interest has developed around separating out impurities of small size; pertinent examples are found within fuel and solvent processing. For such applications a leading candidate process is nanofiltration. This thesis focuses on SRNF (solvent resistant nanofiltration) composite membranes consisting of a dense polymer active layer bonded to a stronger, but ultimately more porous, support layer. The composite membranes that have been produced during the course of this work consist of a PDMS (polymdimethylsiloxane) active layer bonded to a commercially available support layer of PAN (polyacrylonitrile). To create the membrane a monomer was spread over the support layer and then polymerised to form the matrix which was responsible for separation. Commercially, either heat or radiation is often applied to cause polymerisation, however the membranes in the current work have been formed by the used of a homogeneous catalyst. This thesis investigates the transport and separation dynamics of the produced membranes for a series of fuel simulants composed of organometallics and poly-nuclear aromatic solutes dissolved in aromatic and alkane solvents. Membrane composition and the extent of polymer swelling were found to be the two key factors which had the greatest influence on solvent flux and solute rejection. By increasing catalyst concentration it was found that the dual effects of increased rejection and reduced flux occurred, with the converse also being true. The effective pore size of the membrane could also be controlled by varying the catalyst amount during manufacture as this directly affected the limit of crosslinking which formed. Polymer swelling was the most pronounced using solvents with a solubility parameter close to that of the polymer. The membrane transport mechanism was most accurately forecast by the solution diffusion model for flux predictions and the convection diffusion model for rejection predictions, however all the models tried were in close agreement. This was postulated to be due to the swelled polymer matrix which allows for both convective and diffusive transport to occur.

Published
2011

3. Amplitude effects of medio-lateral mechanical and visual perturbations on gait

Author

Jonathan B. Dingwell, Emily H. Sinitski, Kevin Terry, and Jason M. Wilken

Subjects
Male, medicine.medical_specialty, genetic structures, media_common.quotation_subject, Biomedical Engineering, Biophysics, Perturbation (astronomy), Walking, Article, Young Adult, Physical medicine and rehabilitation, Control theory, Feedback, Sensory, Perception, medicine, Pressure, Humans, Orthopedics and Sports Medicine, Gait, Postural Balance, Mathematics, Accidental Deaths, media_common, Extramural, Foot, Rehabilitation, Balance disorders, Amplitude, Visual Perception, Female, Cues
Abstract

Falls during walking are a major contributor to accidental deaths and injuries that can result in debilitating hospitalization costs, lost productivity, and diminished quality of life. To reduce these losses, we must develop a more profound understanding of the characteristic responses to perturbations similar to those encountered in daily life. This study addresses this issue by building on our earlier studies that examined mechanical and visual perturbations in the same environment by applying the same continuous pseudo-random perturbations at multiple (3 mechanical, 5 visual) amplitudes. Walking variability during mechanical perturbations increased significantly with amplitude for all subjects and differences as measured by variabilities of step width, COM position, and COM velocity. These parameters were the only ones sensitive to the presence of visual perturbations, but none of them changed significantly with perturbation amplitude. Additionally, visual perturbation effects were far less consistent across participants, with several who were essentially unaffected by visual perturbations at any level. The homogeneity of the mechanical perturbation effects demonstrates that human responses to mechanical perturbations are similar because they are driven by kinetics that require similar corrections that must be made in order to maintain balance. Conversely, responses to visual perturbations are driven by the perceived need to make corrections and this perception is not accurate enough to produce amplitude-related corrections, even for a single participant, nor is this perception consistent across individuals. This latter finding is likely to be relevant to future visual perturbation studies and the diagnosis and rehabilitation of gait and balance disorders.

Published
2012

Catalog

Books, media, physical & digital resources
See catalog results