Últimos itens adicionados do Acervo: University of Limerick

A University of Limerick é uma universidade pública na cidade de Limerick, Irlanda. Foi fundada em 1972.

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To write or not to write: a nurse's account of writing for publication

O'Halloran, Maeve; Doody, Owen
Fonte: Mark Allen Healthcare Publicador: Mark Allen Healthcare
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; Writing for publication is often seen as an arduous, daunting task reserved mainly for those in academia. This paper represents the first author’s experience over the past 2 years of working on writing papers for publication in the context of personal and academic development. The aim is to reflect on the first author’s journey towards publication with the intention of encouraging nursing staff to make their work visible and validate their practice through publication. This personal journey was made easier by the encouragement, help and support of the second author, a university lecturer acting as a mentor, advisor and critical friend. This paper is also intended to assure and give courage to those who have considered writing about their practice but are reluctant to do so.; ACCEPTED; peer-reviewed

The components of variance and the critical difference in specific markers of bone turnover in healthy adult males and postmenopausal women.

Carroll, P; Hunter, A; Barry, D; Barrett, E; Loughnane, M; Donnelly, R; Murphy, N; Jakeman, P.M
Fonte: National Institute of Health Sciences Publicador: National Institute of Health Sciences
Tipo: info:eu-repo/semantics/article; all_ul_research
Português
peer-reviewed; The study outlined here is part of an overall project, which aims to identify the optimum marker of bone resorption for both healthy young males and post-menopausal, non-osteoporotic women, and is as yet ongoing1. The purpose of this investigation was to quantify the components of variance in specific biochemical markers of bone turnover in healthy males and post-menopausal women i.e. total (CVS), analytical (CVA), within-subject biological (CVI) and betweensubject (CVG) variances. Using CVA and CVI for each individual, the individual critical difference (CDI) or least significant change (P<0.05) was calculated as previously described2. This value represents the minimal difference between two measurements of a biochemical marker that indicates a medically significant alteration of homeostasis (and is not due to normal biological and/or analytical variability alone). Given the CD of these markers the viability of using them in the assessment and/or monitoring of bone metabolism will be considered.; PUBLISHED; n/a

Acute effects of anaerobic exercise on bone turnover in healthy post-menopausal women.

Carroll, P; Murphy, N; Donnelly, R; Barry, D; Barrett, E; Jakeman, P.M; Loughnane, M
Fonte: National Institute of Health Sciences Publicador: National Institute of Health Sciences
Tipo: info:eu-repo/semantics/article; all_ul_research
Português
n/a; Skeletal tissue is in a constant state of flux, remodelling itself to changing physical demands via the bone multicellular unit (BMU). At any one time there are approximately 2m BMUs active on the mature skeleton that individually remodel over a time-course of about 3 months. Physical activity is a known prophylactic to many bone disorders and can perturb the remodelling process, either mechanically1 or metabolically2. Using specific biochemical markers for bone resorption and renewal, this study sought to investigate whether acute (9 days) changes in bone turnover could be observed following a discrete anaerobic exercise challenge.; PUBLISHED; peer-reviewed

Nathalie Melikian: her war of words

Coughlan, David
Fonte: University of Limerick Publicador: University of Limerick
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; no abstract available; PUBLISHED; peer-reviewed

Victims of crime with disabilities: hidden casualites in the 'vision of victim as everyman'

Kilcommins, Shane; Donnelly, Mary
Fonte: SAGE Publications Publicador: SAGE Publications
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed;  In recent decades, criminal justice systems are, at least partially, being reconstructed as they demonstrate an increased sensitivity to the needs and concerns of victims of crime. As part of this, a new cultural theme of the victim as ‘Everyman’ is emerging. However, these generalizing tendencies conceal the multiplicity of experiences of victimhood and of interactions with the criminal justice system. As a result, certain categories of victim are rendered invisible and unable to share in the benefits of the more inclusive approach. One such category is victims with disabilities, and in particular those with intellectual or psychosocial disabilities. The purpose of this article is to write victims with disabilities in Ireland into the victim story more generally. Against a background of greater recognition of victims in Irish law and policy, it demonstrates the variety of ways in which victims with disabilities do not fit more orthodox, ‘everyman’, conceptions of victimization. It identifies the range of ways in which the outsider status of victims of crime with disabilities continues to be maintained in criminal justice policy, the adversarial process, the language employed by the criminal law...

Fear and everyday life in rural Nepal

Pettigrew, Judith; Adhikari, Kamal
Fonte: Springer Publicador: Springer
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; This paper analyses fear in a village in central Nepal during the ‘People’s War’. Spanning the years from 1999 to 2008, the paper illustrates how the different phases of the insurgency and individual circumstances resulted in people’s rela- tionship with fear changing over time. By presenting a chronological analysis of fear, the authors draw attention to the interrelationship between fear, temporality and sociality and show that fear is always contextually situated, differently experienced through time and related to personal circumstances. Villagers had strongly developed coping strategies which they drew upon to support themselves and decrease their fear. Some people, however, suffered such a degree of structural violence that experiencing fear was seen as a privilege. Others denied their fear as part of their performance of manliness while others coped by ridiculing fear. Although a certain amount of suspicion and mistrust lingered, most people recovered from the impact of chronic fear. They fully returned to their field and forest work as well as their previous social activities following the peace agreement of 2006.; ACCEPTED; peer-reviewed

Reconfiguring state-accused relations in Ireland

Kilcommins, Shane; Vaughan, Barry
Fonte: Thomson Round Hall Publicador: Thomson Round Hall
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; no abstract available; PUBLISHED; peer-reviewed

An international review of legal provisions and supports for people with disabilities as victims of crime

Kilcommins, Shane; Edwards, Claire; O'Sullivan, Tina
Fonte: Irish Council for Civil Liberties:ICCL Publicador: Irish Council for Civil Liberties:ICCL
Tipo: info:eu-repo/semantics/report; all_ul_research
Português
non-peer-reviewed; People with disabilities who become victims of crime have derived some benefits from the broader inclusionary momentum in relation to victims in the legal field in Ireland. In addition, there have been some benefits from legislation specifically targeted at supporting people with disabilities. The requirements on public service providers imposed by the Disability Act 2005, for example, have led to improved access to courthouses and Garda stations, through wheelchair ramps, the introduction of induction loop systems (a system comprising of a loop of cable around a designated area, usually a room or a building, which generates a magnetic field picked up by a hearing aid), and the provision of information in accessible formats.; PUBLISHED; non-peer-reviewed

A motion analysis marker-based method of determining centre of pressure during two-legged hopping

Furlong, Laura-Anne M; Harrison, Andrew J.
Fonte: Elsevier Publicador: Elsevier
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed;                            The fixed position of force plates has led researchers to pursue alternative methods of determining centre of pressure (CoP) location. To date, errors reported using alternative methods to the force plate during dynamic tasks have been high. The aim of this study was to investigate the accuracy of a motion analysis marker-based system to determine CoP during a two-legged hopping task. Five markers were attached to the left and right feet of eight healthy adults (5 females, 3 males, age: 25.0±2.8 years, height: 1.75±0.07 m, mass: 71.3±11.3 kg). Multivariate forward stepwise and forced entry linear regression was used with data from five participants to determine CoP position during quiet standing and hopping at various frequencies. Maximum standard error of the estimate of CoP position was 12 mm in the anteroposterior direction and 8 mm in the mediolateral. Cross-validation was performed using the remaining 3 participants. Maximum root mean square difference between the force plate and marker method was 14 mm for mediolateral CoP and 20 mm for anteroposterior CoP during 1.5 Hz hopping. Differences reduced to a maximum of 7 mm (mediolateral) and 14 mm (anteroposterior) for the other frequencies. The smallest difference in calculated sagittal plane ankle moment and timing of maximum moment was during 3.0 Hz hopping...

The rise of the regulatory Irish state: a response to Colin Scott

Kilcommins, Shane; Vaughan, Barry
Fonte: First Law/Lonsdale Law Publishing Publicador: First Law/Lonsdale Law Publishing
Tipo: info:eu-repo/semantics/bookPart; all_ul_research; ul_published_reviewed
Português
peer-reviewed; no abstract available; ACCEPTED; peer-reviewed

Residual stress magnitudes and related properties in quenched aluminium alloys

Tanner, D.A; Robinson, J.S
Fonte: Maney Publishing Publicador: Maney Publishing
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; The surface and through thickness residual stress magnitudes present in heat treated high strength aluminium alloy components are frequently reported to exceed the uniaxial yield stress of small specimens of the same alloy measured immediately after quenching. In thick section plate and forgings, it is proposed that these high residual stress magnitudes are a consequence of hardening precipitation that occurs during quenching which allows a greater elastic stress to be supported. To investigate this theory, a Jominy end quench technique is used to determine the hardness of aluminium alloys 7010, 7175 and 5083 as a function of distance from the quenched end. Cooling curves have been measured for Jominy end quench specimens using deeply buried thermocouples and are compared with finite element model predictions. Tensile properties are also determined for small specimens quenched into cold and boiling water. Vickers hardness and X-ray diffraction residual stress measurements are undertaken on specimens of varying size acting as a comparison with the Jominy results. These results in combination with optical and electron microscopy data do suggest that low temperature rather than high temperature precipitation during the quench leads to increased as quenched mechanical strengths...

Synthesis of pentacene nanotubes by melt-assisted template wetting

Barrett, C; lacopino, D; O Carroll, D; DeMarzi, G; Tanner, D.A; Quinn, A.J; Redmond, G
Fonte: American Chemical Society Publicador: American Chemical Society
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; no abstract available; PUBLISHED; peer-reviewed

Reducing residual stress in 2014 aluminium alloy die forgings

Tanner, D.A; Robinson, J.S
Fonte: Elsevier Publicador: Elsevier
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; Closed die forgings manufactured from 2014 aluminium alloys have been subject to both standard and non-standard heat treatments in order to reduce the as-quenched residual stress magnitudes. Warm water (60 degrees C) and boiling water quenches are investigated. The influence of changing the surface finish of the forgings during boiling water quenching on the mechanical properties and residual stress has also been determined. In addition, high temperature (200 degrees C) and dual aging treatments have been evaluated in an attempt to combine low residual stresses with the required levels of mechanical properties. Residual stress magnitudes determined by the centre hole: drilling strain-gauge method are reported in addition to stress corrosion cracking, fracture toughness, fatigue and tensile mechanical property variations. The results indicate that boiling water quenching leads to very low residual stress but unsatisfactory mechanical properties. However, the same quenching regime applied to forgings with a black oxide coating results in low residual stress in combination with mechanical properties very close to those achieved by warm water quenching. (c) 2007 Elsevier Ltd. All rights reserved.; Accepted; peer-reviewed

TEM analysis of apatite surface layers observed on zinc based glass polyalkenoate cements

Towler, M.R; Wren, A.W.; Clarkin, O.M; Tanner, D.A
Fonte: Springer Publicador: Springer
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; Glass polyalkenoate cements (GPCs) are acid base cements formed by the reaction of an aqueous solution of polyalkenoic acid, usually polyacrylic acid (PAA) with an acid degradable aluminosilicate glass. The result of the reaction is cement consisting of reacted and unreacted glass particles embedded in a polysalt matrix. In addition to these conventional GPCs, aluminium free glass polyalkenoate cements based on zinc silicate glasses (Zn-GPCs) exhibit significant potential as bone cements for several reasons. Primarily, they are formulated without the inclusion of aluminium (Al) [1] in the glass phase and thus eliminate clinical complications arising from the release of the Al3+ ion from the cement in vivo. Such complications have, in the past, included aluminium induced encephalopathy [2-5] and defective mineralisation of cancellous bone [6]. Secondly, Zn-GPCs set without a significant evolution of heat, when compared with commercial bone cements such as Spineplex ® (Stryker, Limerick, Ireland). Finally, these materials can be tailored to release clinically beneficial ions into surrounding tissues [7]. In addition to Zn, these cements have been synthesized to contain strontium (Sr) [8, 9]. Both Sr and Zn inhibit osteoclastic turnover and promote osteoblastic turnover...

Study of mixed flowing gas exposure of copper

Reid, M; Punch, Jeff; Garfias-Mesias, L.F; Shannon, K; Belochapkine, S; Tanner, D.A
Fonte: Electrochemical Society Publicador: Electrochemical Society
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; This paper describes the results of copper coupons exposed to a class III mixed flowing gas environment (MFG) following the guidelines given by the Battelle Laboratory and the International Electrotechnical Commission for environmental testing. Corrosion products were studied in detail using scanning electron microscope, energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), focused ion beam (FIB), secondary ion mass spectroscopy (SIMS), and transmission electron microscope. The weight gain measured after each exposure was compared with the weight gain calculated from the cathodic reduction of the corrosion layers and cross sectioning using an FIB. The result shows a relatively good correlation between the measured and the calculated experimental values of weight gain. As expected, within the first week, the different corrosion layers thickened until they formed a thick layer that became the determining step for further growth. After several days of exposure the Cu coupons developed a complex multilayered structure consisting of cuprous oxide (Cu2S), cupric oxide (CuO), copper sulfide (Cu2S), covellite (CuS), and evidence of antlerite (3CuO SO3 2H(2)O). No Cl-containing corrosion products were identified using XRD. However...

Enhanced electrochemiluminescence and charge transport through films of metallopolymer-gold nanoparticle composites

Devadoss, A; Spehar-Déleze, A.M; Tanner, D.A; Bertoncello, P; Marthi, R; Keyes, T.E; Foster, R.J
Fonte: University of Limerick Publicador: University of Limerick
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; Water-soluble 4-(dimethylamino) pyridine (DMAP) stabilized gold nanoparticles (DMAP-AuNP) were synthesized by ligand exchange and phase transfer (toluene/water). The DMAP-AuNPs are positively charged with the core diameter of 4 +/- 1 nm. Metallopolymer-gold nanocomposites were prepared by mixing gold nanoparticles and [Ru(bpy)(2)PVP(10)](ClO(4))(2), in water at different mole ratios: bpy is 2,2'-bipyridyl and PVP is poly (4-vinylpyridine). The photoluminescence emission intensity of the metallopolymer decreases with increasing AuNP loading and approximately 57% of the emission intensity is quenched when the Au NP:Ru mole ratio is 14.8 x 10(-2). The rate or homogeneous charge transfer through thin layers of the nanocomposite deposited oil glassy carbon electrodes increases with increasing nanoparticle loading. The homogeneous charge transport diffusion coefficient, D(CT)., for the composite (AuNP:Ru mole ratio 13.2 x 10(-2)) is (2.8 +/- 0.8) X 10(-11) cm(-2) s(-1) and is approximately 3-fold higher than that found for the pure metallopolymer. Significantly, despite the ability of the metal nanoparticles to quench the ruthenium-based emission, the electrochemiluminescence of the nanocomposite with a AuNP:Ru mole ratio of 4.95 x 10(-2) is approximately three times more intense than the parent metallopolymer. This enhancement arises from the increased rate of charge transport that leads to it greater number of excited states per unit time while minimizing lie quenching effects. The implications of these findings for the design of electrochemiluminescent sensors are discussed.; PUBLISHED; peer-reviewed

Hydroxyapatite formation on metallurgical grade nanoporous silicon particles

Chadwick, E.G; Clarkin, O.M; Tanner, D.A
Fonte: Springer Publicador: Springer
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; Studies into bone-like apatite or hydroxyapatite (HA) growth on potential biomaterials when in contact with simulated body fluid (SBF) not only establish a general method for determining bioactivity but coincidently lead to the design of new bioactive materials in biomedical and tissue engineering fields. Previous studies of HA growth on porous silicon (PS) have examined electrochemically etched silicon substrates after immersion in a SBF. This study differs from previous work in that it focuses on characterising HA growth on chemically etched metallurgical grade nanoporous silicon particles. The PS used in this study is comprised of nanosponge particles with disordered pore structures with pore sizes ranging up to 10 nm on micron-sized particles. The silicon particles are analysed before and after immersion into SBF using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) analysis and X-ray photoelectron spectroscopy (XPS). Results indicate that a HA layer forms on the surface of the nanosponge particles. Experimental analysis indicates that the morphology and calcium-to-phosphorus ratio (Ca/P) verify the formation of crystalline HA on the nanoporous silicon particles.; accepted; peer-reviewed

Defocus image contrast in hexagonally-ordered mesoporous material

Nakahara, S; Tanner, D.A; Hudson, D.A; Magner, S; Redington, E; Hodnett, Benjamin K
Fonte: Royal Society of Chemistry Publicador: Royal Society of Chemistry
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; A transmission electron microscope was used to characterize a powder form of hexagonally-ordered mesoporous silica material. The structural symmetry built into this amorphous material allowed one to obtain three characteristic images, i.e. a hexagonal honey-comb structure and wide/narrow parallel lines. These images were found to originate primarily from phase contrast, which changed sensitively with defocusing. To further understand the contrast behaviour of these images, an analytical form of the defocus contrast theory was developed and applied to the simulation of the characteristic wide/narrow parallel line images. The simulation was found to be in good qualitative agreement with experiments, where changes in focus conditions and specimen thickness were predicted to alter the contrast in the resulting parallel-line type images.; PUBLISHED; peer-reviewed

Measurement and prediction of machining induced redistribution of residual stress in the aluminium alloy 7449

Robinson, J.S; Tanner, D.A; Truman, C.E; Wimpory, R.C
Fonte: Springer Publicador: Springer
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; The residual stress distributions in two 7449 aluminium alloy rectilinear blocks have been determined using neutron diffraction. Heat treatment included cold water immersion quenching and a period of precipitation hardening. Quenching induced very high magnitude residual stresses into the two blocks. One block was measured in this condition while the other was incrementally machined by milling to half thickness. Neutron diffraction measurements were made on the milled half thickness block at equivalent locations to the unmachined block. This permitted through thickness measurements from both blocks to be compared, revealing the redistribution of residual stresses induced by machining. A square cross section post in the centre of the machined face was left to act as a stress free reference sample. The distortions arising on the face opposite to that being milled were measured using a co-ordinate measuring machine. The residual stresses and distortion arising in the blocks have been compared to finite element analysis prediction and found to generally agree. Material removal only caused distortion and the residual stresses to redistribute; there was no stress relaxation evident.; Accepted; peer-reviewed

Oxidation induced void formation in TEM specimens of Al-Cu-Li alloy

Nakahara, S; Tanner, D.A; Khan, A.K; Robinson, J.S
Fonte: Maney Publishing Publicador: Maney Publishing
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
Português
peer-reviewed; A TEM study has revealed, for the first time, the presence of small (similar to 3 nm in diameter) voids attached to T(1) (Al(2)CuLi) precipitates present in an artificially aged Al-Cu-Li alloy (Al-2.90Cu-1.63Li-0.29Mg-0.28Ag-0.13Zr). These voids do not form from quenched in excess vacancies but are nucleated at the T(1) phase/alloy interface from excess vacancies generated during oxidation of the TEM sample. It is concluded that these voids result from the Kirkendall effect with rapid oxidation of the TEM metal surface occurring by molecular oxygen migration through a highly defective surface oxide layer.; accepted; peer-reviewed