Correlating the end-Triassic mass extinction and flood basalt volcanism at the 100 ka level

New high-precision U/Pb geochronology from volcanic ashes shows that the Triassic-Jurassic boundary and end-Triassic biological crisis from two independent marine stratigraphic sections correlate with the onset of terrestrial flood volcanism in the Central Atlantic Magmatic Province to <150 ka. This narrows the correlation between volcanism and mass extinction by an order of magnitude for any such catastrophe in Earth history. We also show that a concomitant drop and rise in sea level and negative delta C-13 spike in the very latest Triassic occurred locally in <290 ka. Such rapid sea-level fluctuations on a global scale require that global cooling and glaciation were closely associated with the end-Triassic extinction and potentially driven by Central Atlantic Magmatic Province volcanism.

End of life care standards for people with dementia

End of life care standards for people with dementiaThis project, funded under Call 1 of CARDI’s Grants Programme and led by Dr Suzanne Cahill, School of Social Work and Social Policy, Trinity College Dublin, highlights the need for guaranteed standards of care for older people with dementia at the end of their lives.The research recommends the introduction of standards as a matter of urgency because of the huge increases in the number of people affected, and the number likely to be affected in the future. It is estimated that the number of people with dementia in the Republic of Ireland will rise from 44,000 to 104,000 by 2036 and in Northern Ireland from 16,000 to 47,000 in 2051.The research draws attention to the importance of agreeing new standards in Ireland, North and South, by proposing guidelines to develop policies and practices that can reflect the best available throughout the world.Research Team:•������ Dr Suzanne Cahill, School of Social Work and Social Policy, Trinity College Dublin•������ Ms Daphne Doran, Quality Initiatives, Belfast•������ Dr Max Watson, University of Ulster and Northern Ireland HospiceResearch briefingFull report��

Medication use in patients with end of life dementia:Presentations

CARDI recently launched a new report (Friday 6 July 2012) which finds considerable uncertainty and variation in the medicines doctors say they would prescribe for patients with dementia at the end of life when presented with clinical scenarios. The all-Ireland research, led by a team at QUB, finds evidence that GPs and hospital physicians indicate they would continue with dementia medications and statins and actively prescribe antibiotics when there is limited evidence of benefits to patients with dementia at end of life.Links to presentations are below:Assessment of factors which influence decision-making regarding medication use in patients with dementia at the end of life: Prof Carmel HughesMedication use in patients with end of life dementia: Dr Shaun O'Keefe

CARDI Research Brief: Medication use in patients with dementia at the end of life

��Palliative care and medication use are important issues in dealing with end-of-life stage dementia. As research into palliative care for patients with advanced dementia has been limited to date, CARDI funded a project, led by Dr. Carole Parsons of Queen’s University Belfast, as part of its grants programme. This project aimed to evaluate the extent to which patient-related factors influenced clinical decision-making with regard to medication use in patients with endstagedementia. This research brief presents a summary of the findings from the full report, Assessment of factors which influence physician decisionmaking regarding medication use in patients with dementia at the end of life (Parsons, et al., 2012).Read the research brief here: Medication use in patients with dementia at the end of lifeRead the press release here

Guidance on starting end of life care conversations with people affected by dementia

Dementia UK, as a member of the Dying Matters coalition, contributed to a new leaflet that discusses how to begin conversations around end of life care for people with dementia. Aimed at GPs and families who have recently received a dementia diagnosis, this leaflet provides at-a-glance information about having this very necessary conversation and includes information about when to talk about it and tips about what to say. Download the leaflet

Desenvolupament d'edició geogràfica segons l'estàndard WFS-T sobre l'API de Google Maps

El present treball tractarà d'aprofitar Google Maps i les eines lliures disponibles, per construir unes llibreries Javascript d'ús obert que permetin afegir serveis de persistència als serveis de cartografia ja disponibles.

Estudi i avaluació de les funcionalitats de PostgreSQL

L'objectiu del projecte és fer un resum de les funcionalitats i la idoneïtat del sistema de gestió de base de dades PostgreSQL, per a facilitar la posible implantació en l'àmbit docent universitari.

An analysis of the components of pain, function, and health-related quality of life in patients with failed back surgery syndrome treated with spinal cord stimulation or conventional medical management

Objectives: Failed back surgery syndrome (FBSS) patients experience pain, functional disability, and reduced health-related quality of life (HRQoL) despite anatomically successful surgery. Examining sub-dimensions of health outcomes measures provides insight into patient well-being. Materials and Methods: The international multicenter PROCESS trial collected detailed HRQoL (EuroQol-5D; Short-Form 36) and function (Oswestry Disability Index) information on 100 FBSS patients. Results: At baseline, patients reported moderate-to-severe leg and back pain adversely affecting all dimensions of function and HRQoL. Compared with conventional medical management alone, patients also receiving spinal cord stimulation (SCS) reported superior pain relief, function, and HRQoL at six months on overall and most sub-component scores. The majority of these improvements with SCS were sustained at 24 months. Nonetheless, 36-40% of patients experienced ongoing marked disability (standing, lifting) and HRQoL problems (pain/discomfort). Conclusions: Longer-term patient management and research must focus on these refractory FBSS patients with persisting poor function and HRQoL outcomes.

Breast screening: why have I been called back? (English and translations)

This leaflet is used to support the Northern Ireland breast screening programme and explains the additional tests that may be offered at a breast assessment clinic following a mammogram that has shown a possible abnormality�

Bentho-planktonic evidence from the Austrian Alps for a decline in sea-surface carbonate production at the end of the Triassic

A high-resolution micropalaeontological study, combined with geochemical and sedimentological analyses was performed on the Tiefengraben, Schlossgraben and Eiberg sections (Austrian Alps) in order to characterize sea-surface carbonate production during the end-Triassic crisis. At the end-Rhaetian, the dominant calcareous nannofossil Prinsiosphaera triassica shows a decrease in abundance and size and this is correlated with a increase in delta O-18 and a gradual decline in delta C-13(carb) values. Simultaneously, benthic foraminiferal assemblages show a decrease in diversity and abundance of calcareous taxa and a dominance of infaunal agglutinated taxa. The smaller size of calcareous nannofossils disturbed the vertical export balance of the biological carbon pump towards the sea-bottom, resulting in changes in feeding strategies within the benthic foraminiferal assemblages from deposit feeders to detritus feeders and bacterial scavengers. These micropalaeontological data combined with geochemical proxies suggest that changes in seawater chemistry and/or cooling episodes might have occurred in the latest Triassic, leading to a marked decrease of carbonate production. This in turn culminated in the quasi-absence of calcareous nannofossils and benthic foraminifers in the latest Triassic. The aftermath (latest Triassic earliest Jurassic) was characterised by abundance peaks of ``disaster'' epifaunal agglutinated foraminifera Trochammina on the sea-floor. Central Atlantic Magmatic Province (CAMP) paroxysmal activity, superimposed on a major worldwide regressive phase, is assumed to be responsible for a deterioration in marine palaeoenvironments. CAMP sulfuric emissions might have been the trigger for cooling episodes and seawater acidification leading to disturbance of the surface carbonate production at the very end-Triassic.

The Intra-Alpine terrain: A Paleotethyan remnant in the Alpine Variscides

A Cordilleran type evolution is proposed for the Variscan orogen of middle Europe. This orogenesis is regarded as mainly evolving through terrain accretion and subsequent collapse of the overthickened crust. A major terrain accretion took place between late Devonian and early Carboniferous when the Intra-Alpine terrain collided with the Ligerian-Moldanubian active margin. This terrain is regarded as being a segment of the northern margin of Paleotethys. Oblique subduction of Paleotethys under the newly accreted terrain is responsible for the voluminous calc-alkaline magmatism in late Carboniferous. The Paleotethys subduction has generated a lateral displacement of the eastern part of the Intra-Alpine terrain inducing a duplication of its western end. The late Carboniferous closure of Paleotethys in middle Europe is not found eastward where this closure happened only in early-Triassic times, following the simultaneous opening of the Neotethys ocean and the Meliata back-arc. Palinspastic models of the western Tethyan realm are proposed from the Carboniferous to early Jurassic.

Dynamic responses of oxygen uptake at the onset and end of moderate and heavy exercise in trained subjects.

Inconsistencies about dynamic asymmetry between the on- and off-transient responses in VO2 are found in the literature. Therefore the purpose of this study was to examine VO2 on- and off-transients during moderate- and heavy-intensity cycling exercise in trained subjects. Ten men underwent an initial incremental test for the estimation of ventilatory threshold (VT) and, on different days, two bouts of square-wave exercise at moderate (<VT) and heavy (>VT) intensities. VO2 kinetics in exercise and recovery were better described by a single exponential model (<VT), or by a double exponential with two time delays (>VT). For moderate exercise, we found a symmetry of VO2 kinetics between the on- and off-transients (i.e., fundamental component), consistent with a system manifesting linear control dynamics. For heavy exercise, a slow component superimposed on the fundamental phase was expressed in both the exercise and recovery, with similar parameter estimates. But the on-transient values of the time constant were appreciably faster than the associated off-transient, and independent of the work rate imposed (<VT and >VT). Our results do not support a dynamically linear system model of VO2 during cycling exercise in the heavy-intensity domain.

Dynamic responses of O2 uptake at the onset and end of exercise in trained subjects.

Inconsistencies about dynamic asymmetry between the on- and off-transient responses in .VO2 are found in the literature. Therefore the purpose of this study was to examine .VO2on- and off-transients during moderate- and heavy-intensity cycling exercise in trained subjects. Ten men underwent an initial incremental test for the estimation of ventilatory threshold (VT) and, on different days, two bouts of square-wave exercise at moderate (<VT) and heavy (>VT) intensities. .VO2 kinetics in exercise and recovery were better described by a single exponential model (<VT) or by a double exponential with two time delays (>VT). For moderate exercise, we found a symmetry of .VO2 kinetics between the on- and off-transients (i.e., fundamental component), consistent with a system manifesting linear control dynamics. For heavy exercise, a slow component superimposed on the fundamental phase was expressed in both the exercise and recovery, with similar parameter estimates. But the on-transient values of the time constant were appreciably faster than the associated off-transient, and independent of the work rate imposed (<VT and >VT). Our results do not support a dynamically linear system model of .VO2 during cycling exercise in the heavy-intensity domain.