Ultrafast exciton dynamics in Type II ZnTe-ZnSe colloidal quantum dots.

Ultrafast transient absorption spectroscopy is used to investigate the exciton dynamics of Type II ZnTe-ZnSe core-shell colloidal quantum dots. Surface-trapping is shown to occur within a few picosecond for hot electrons and with a few 10s of picoseconds for electrons cooled to the band-edge, and is the dominant process in the decay of the band-edge bleach for well-stirred samples pumped at moderate powers. The surface-trapped electrons produce a broad photo-induced absorption that spectrally overlaps with the band-edge, distorting and partially cancelling out the bleach feature. At high pump powers and for unstirred samples, these surface-trapped electrons can survive sufficiently long within the pumped volume to accumulate under repeated excitation of the sample, resulting in the formation of an additional exciton decay channel.

Health workforce planning and service expansion during an economic crisis: A case study of the national breast screening programme in Ireland.

This article aims to estimate the workforce and resource implications of the proposed age extension of the national breast screening programme, under the economic constraints of reduced health budgets and staffing levels in the Irish health system. Using a mixed method design, a purposive sample of 20 participants were interviewed and data were analysed thematically (June-September 2012). Quantitative data (programme-level activity data, screening activity, staffing levels and screening plans) were used to model potential workload and resource requirements. The analysis indicates that over 90% operational efficiency was achieved throughout the first six months of 2012. Accounting for maternity leave (10%) and sick leave (3.5%), 16.1 additional radiographers (whole time equivalent) would be required for the workload created by the age extension of the screening programme, at 90% operational efficiency. The results suggest that service expansion is possible with relatively minimal additional radiography resources if the efficiency of the skill mix and the use of equipment are improved. Investing in the appropriate skill mix should not be limited to clinical groups but should also include administrative staff to manage and support the service. Workload modelling may contribute to improved health workforce planning and service efficiency.

Getting a handle on the general practice workforce in Ireland.

BACKGROUND: General practice makes a critical contribution to healthcare in Ireland. However, there is a weak understanding of the general practice workforce in Ireland. AIMS: The aim of this study is to estimate the number of general practitioners (GPs) and practice nurses in Ireland. METHODS: A variety of data sources was used to corroborate counts of general practitioners and practice nurses. Capture-recapture methods were used to estimate the hidden population of GPs not identified by the databases included. RESULTS: There are 2,954 general practitioners in Ireland, equivalent to 64.4 per 100,000 population. There are 1,700 practice nurses nationally, equivalent to 37.1 per 100,000 persons. There is substantial regional variation in the number of general practitioners and practice nurses per 100,000. To some extent, deficits in one discipline may be counterbalanced by a surplus in the other. CONCLUSIONS: In the absence of a centralised register, it is not possible to track the number of GPs or practice nurses working in Ireland at present. This is despite the fact that there are twice as many general practice visits per annum compared to hospital visits.

Calculating the costs of an 8-week, physiotherapy-led exercise intervention in deconditioned cancer survivors in the early survivorship period (the PEACH trial).

Strong evidence exists for rehabilitation programmes following a cancer diagnosis, although little is known about their cost. The effects of an 8-week, physiotherapy-led, structured group intervention during the early survivorship phase were evaluated. Significant changes in quality of life and fatigue, and promising changes in fitness were found. The overall cost for this programme was €196 per participant, including the salaries of the clinicians, overheads and equipment costs. The modest costs associated with this programme may support more routine 'cancer rehabilitation', although more robust analyses are required.

Autolysis of listeria monocytogenes.

Autolytic curves of five representative strains of Listeria monocytogenes are described. Of 24 strains so far examined, the majority are unstable in vitro.