Why is physical activity on prescription so important in health care?

Efst á síðunni er hægt að nálgast greinina í heild sinni með því að smella á hlekkin

New Insights for Detecting and Deriving Thermal Properties of Lava Flow Using Infrared Satellite during 2014–2015 Effusive Eruption at Holuhraun, Iceland

A new lava field was formed at Holuhraun in the Icelandic Highlands, north of Vatnajökull glacier, in 2014–2015. It was the largest effusive eruption in Iceland for 230 years, with an estimated lava bulk volume of ~1.44 km3 covering an area of ~84 km2. Satellite-based remote sensing is commonly used as preliminary assessment of large scale eruptions since it is relatively efficient for collecting and processing the data. Landsat-8 infrared datasets were used in this study, and we used dual-band technique to determine the subpixel temperature (Th) of the lava. We developed a new spectral index called the thermal eruption index (TEI) based on the shortwave infrared (SWIR) and thermal infrared (TIR) bands allowing us to differentiate thermal domain within the lava flow field. Lava surface roughness effects are accounted by using the Hurst coefficient (H) for deriving the radiant flux (Φrad) and the crust thickness (Δh). Here, we compare the results derived from satellite images with field measurements. The result from 2 December 2014 shows that a temperature estimate (1096 °C; occupying area of 3.05 m2) from a lava breakout has a close correspondence with a thermal camera measurement (1047 °C; occupying area of 4.52 m2). We also found that the crust thickness estimate in the lava channel during 6 September 2014 (~3.4–7.7 m) compares closely with the lava height measurement from the field (~2.6–6.6 m); meanwhile, the total radiant flux peak is underestimated (~8 GW) compared to other studies (~25 GW), although the trend shows good agreement with both field observation and other studies. This study provides new insights for monitoring future effusive eruption using infrared satellite imagesThe first author has been supported by the Indonesia Endowment Fund for Education (LPDP), Institute of Earth Science and Vinir Vatnajökuls during his Ph.D. project. Authors also would also like to thank anonymous reviewers for their constructive comments for the manuscript.Peer Reviewe

Implementation and feasibility of the stroke nursing guideline in the care of patients with stroke: a mixed methods study

To access publisher's full text version of this article, please click on the hyperlink in Additional Links field or click on the hyperlink at the top of the page marked FilesBACKGROUND: Nurses often have difficulties with using interdisciplinary stroke guidelines for patients with stroke as they do not focus sufficiently on nursing. Therefore, the Stroke Nursing Guideline (SNG) was developed and implemented. The aim of this study was to determine the implementation and feasibility of the SNG in terms of changes in documentation and use of the guideline in the care of stroke patients on Neurological and Rehabilitation wards, barriers and facilitators, and nurses' and auxiliary nurses' view of the implementation. METHODS: A sequential explorative mixed method design was used including pre-test post-test measures and post intervention focus groups interviews. For the quantitative part retrospective electronic record data of nursing care was collected from 78 patients and prospective measures with Barriers and Facilitators Assessment Instrument (BFAI) and Quality Indicator Tool (QIT) from 33 nursing staff including nurses and auxiliary nurses. In the qualitative part focus groups interviews were conducted with nursing staff on usefulness of the SNG and experiences with implementation. RESULTS: Improved nursing documentation was found for 23 items (N = 37), which was significant for nine items focusing mobility (p = 0.002, p = 0.024, p = 0.012), pain (p = 0.012), patient teaching (p = 0.001, p = 0.000) and discharge planning (p = 0.000, p = 0.002, p = 0.004). Improved guideline use was found for 20 QIT-items (N = 30), with significant improvement on six items focusing on mobility (p = 0.023), depression (p = 0.033, p = 0.025, p = 0.046, p = 0.046), discharge planning (p = 0.012). Facilitating characteristics for change were significantly less for two of four BFAI-subscales, namely Innovation (p = 0.019) and Context (p = 0.001), whereas no change was found for Professional and Patient subscales. The findings of the focus group interviews showed the SNG to be useful, improving and providing consistency in care. The implementation process was found to be successful as essential components of nursing rehabilitation were defined and integrated into daily care. CONCLUSION: Nursing staff found the SNG feasible and implementation successful. The SNG improved nursing care, with increased consistency and more rigorous functional exercises than before. The SNG provides nurses and auxiliary nurses with an important means for evidence based care for patients with stroke. Several challenges of implementing this complex nursing intervention surfaced which mandates ongoing attention.Icelandic Nursing Association Scientific Fund of Landspitali University Hospital, Reykjavik, Icelan

Icelandic community pharmacists' and pharmacy students' expectations of future role extensions and education requirements: a cross sectional survey.

Aim: To explore the expectations of Icelandic community pharmacists and final year pharmacy students on future role extensions and associated education needs. Methods: All community pharmacists across Iceland registered with the Pharmaceutical Society of Iceland (LFI) (n=136) and all fourth- and fifth-year pharmacy students enrolled at the Faculty of Pharmaceutical Sciences at the University of Iceland (n=69). An online cross-sectional questionnaire was designed, validated, piloted and analysed using descriptive statistics, logistic regression and content analysis. Results: The response rate was 27.9% (n=38) for community pharmacists and 33.3% (n=23) for fourth- and fifth-year pharmacy students respectively. Of these, 90.2% (n=55) saw the need for community pharmacists’ role extensions and most (n=60, 98.4%) were willing to accept additional education to make role extensions in Iceland possible. Logistic regression identified that students identified the need for pharmacists to be making prescribing recommendations to medical healthcare professionals (p=0.023); for example 'Pharmacists should use their knowledge to give advice and collaborate with physicians and other healthcare professionals about drug therapies'. Conclusion: Both community pharmacists and pharmacy students showed a strong willingness to extend their roles in the future. It will require government support to overcome perceived barriers and to develop further education programmes

Seasonal changes in sea ice conditions along the Northeast Passage in 2007 and 2012

Remote sensing data from passive microwave and satellite-based altimeters, associated with the data measured underway, were used to characterize seasonal and spatial changes in sea ice conditions along the Arctic Northeast Passage (NEP) and the high-latitude sea route (HSR) north of the island groups in the eastern Arctic Ocean in 2007 and 2012. In both years, summer Arctic sea ice extent reached minima since satellite records began in 1979. However, there were large differences in spatial distribution of sea ice between the two years. Sea ice conditions in the eastern sections of the sea routes were relatively slight in the 2007 summer, because of the remarkable decline of sea ice in the Pacific sector. A belt of sea ice that blocked sections from the western Laptev Sea to the eastern Kara Sea resulted in both sea routes not completely opening through the 2007 summer. The combination of a great storm in early August causing sea ice to be sheared from the Arctic pack ice and the thick ice surviving the winter delayed the summer opening of the eastern parts of the sea routes in 2012. However, the average open period, defined by 50% ice concentration for the entire NEP and HSR, reached 82 d and 55 d, respectively. Thus, 2012 was the most accessible year since the satellite era began in 1979. The distinct decrease in sea ice in the western parts of the HSR in the 2012 summer can be attributed to the thinning preconditions of sea ice prior to the melt season. The HSR opening can benefit Arctic shipping of deeper-draft vessels

Stroke survivors' experiences with rebuilding life in the community and exercising at home: A qualitative study.

To access publisher's full text version of this article, please click on the hyperlink in Additional Links field or click on the hyperlink at the top of the page marked DownloadAim: This study aimed to explore how stroke survivors deal with stroke-related impairments when rebuilding their lives in the community and their experiences of exercising at home. Design: An explorative and descriptive qualitative study. Methods: A purposive sample of ten stroke survivors residing at home was recruited to explore experiences of rebuilding their lives in the community and exercising at home. One focus group interview was conducted followed by semi-structured interviews. Data were analysed using thematic analysis. Results: Three main themes were identified: "Framing exercise within the context of everyday life" describes how stroke survivors integrate exercise in everyday activities with varying success and the social importance of exercising; "Managing the challenges of physical impairment" describes the taxing undertakings in daily living, loss of concentration and identity; "Long-term challenges of everyday life" describes how the stroke survivors manage depression and live with a sense of uncertainty. Keywords: home rehabilitation; qualitative research; rehabilitation; stroke patients; stroke rehabilitation.NordForsk programme on Health and Welfar

Tracking Holocene drift-ice limits on the northwest–southwest Iceland shelf: Comparing proxy data with observation and historical evidence

We detail variations in the weight percent (wt%) of quartz, a proxy for drift ice, in fifteen marine sediment cores from the northwest, west, and southwest Iceland shelf throughout the past 10 cal ka BP. We present the first map of iceberg distributions in Iceland waters between 1983 and 2011 and a new compilation of sea-ice records in the century from 850 to 1950 CE. The wt% of quartz, determined by quantitative X-ray diffraction (qXRD) analysis, is used to evaluate changes in the importation of drift ice. Small wt% of quartz were added to milled basalt (0% quartz), and to a mixture of non-clay and clay minerals; the qXRD method replicated 0 percent quartz, while measured 1&ndash;3 percent quartz always resulted in a &ldquo;presence&rdquo; estimate. The outer sites in the northwest sector lie close to the average position of the sea-ice margin between 1870 and 1920 CE; the southwest shelf sites lie south of this limit. Transects of cores along the H&uacute;nafl&oacute;i and Dj&uacute;p&aacute;ll troughs indicate that the traces of drift ice decrease rapidly landward from the outer sites. The cores from the west/southwest of Iceland have limited amounts of quartz, generally possibly limited incursions of drift ice.</p

Lava Flow Roughness on the 2014–2015 Lava Flow-Field at Holuhraun, Iceland, Derived from Airborne LiDAR and Photogrammetry

Publisher's version (útgefin grein)Roughness can be used to characterize the morphologies of a lava flow. It can be used to identify lava flow features, provide insight into eruption conditions, and link roughness pattern across a lava flow to emplacement conditions. In this study, we use both the topographic position index (TPI) and the one-dimensional Hurst exponent (H) to derive lava flow unit roughness on the 2014–2015 lava field at Holuhraun using both airborne LiDAR and photogrammetric datasets. The roughness assessment was acquired from four lava flow features: (1) spiny lava, (2) lava pond, (3) blocky surface, and (4) inflated channel. The TPI patterns on spiny lava and inflated channels show that the intermediate TPI values correspond to a small surficial slope indicating a flat and smooth surface. Lava pond is characterized by low to high TPI values and forms a wave-like pattern. Meanwhile, irregular transitions patterns from low to high TPI values indicate a rough surface that is found in blocky surface and flow margins. The surface roughness of these lava features falls within the H range of 0.30 ± 0.05 to 0.76 ± 0.04. The roughest surface is the blocky, and inflated lava flows appear to be the smoothest surface among these four lava units. In general, the Hurst exponent values in the 2014–2015 lava field at Holuhraun has a strong tendency in 0.5, both TPI and Hurst exponent successfully derive quantitative flow roughnessThe first author was supported by the Indonesia Endowment Fund for Education (LPDP) Grant No. 20160222025516, European Network of Observatories and Research Infrastructures for Volcanology (EUROVOLC), and Vinir Vatnajökuls during his Ph.D. project. LiDAR airborne datasets provided by The European Facility for Airborne Research (EUFAR) and airborne photogrammetry provided by Loftmyndir ehf.Peer Reviewe