47 research outputs found
Transition Properties of Low Lying States in Atomic Indium
We present here the results of our relativistic many-body calculations of
various properties of the first six low-lying excited states of indium. The
calculations were performed using the relativistic coupled-cluster method in
the framework of the singles, doubles and partial triples approximation. We
obtain a large lifetime ~10s for the [4p^6]5s^2 5p_{3/2} state, which had not
been known earlier. Our precise results could be used to shed light on the
reliability of the lifetime measurements of the excited states of atomic indium
that we have considered in the present work.Comment: 6 pages, 1 figure and 3 table
Reported reasons for not using a mosquito net when one is available: a review of the published literature
Background: A review of the barriers to mosquito net use in malaria-endemic countries has yet to be presented in the published literature despite considerable research interest in this area. This paper partly addresses this gap by reviewing one component of the evidence base; namely, published research pertaining to self-reported reasons for not using a mosquito net among net 'owning' individuals. It was anticipated that the review findings would potentially inform an intervention or range of interventions best suited to promoting greater net use amongst this group. Method. Studies were sought via a search of the Medline database. The key inclusion criteria were: that study participants could be identified as owning a mosquito net or having a mosquito net available for use; that these participants on one or more occasions were identified or self-reported as not using the mosquito net; and that reasons for not using the mosquito net were reported. Studies meeting these criteria were included irrespective of mosquito net type. Results: A total of 22 studies met the inclusion criteria. Discomfort, primarily due to heat, and perceived (low) mosquito density were the most widely identified reason for non-use. Social factors, such as sleeping elsewhere, or not sleeping at all, were also reported across studies as were technical factors related to mosquito net use (i.e. not being able to hang a mosquito net or finding it inconvenient to hang) and the temporary unavailability of a normally available mosquito net (primarily due to someone else using it). However, confidence in the reported findings was substantially undermined by a range of methodological limitations and a dearth of dedicated research investigation. Conclusions: The findings of this review should be considered highly tentative until such time as greater quantities of dedicated, well-designed and reported studies are available in the published literature. The current evidence-base is not sufficient in scope or quality to reliably inform mosquito net promoting interventions or campaigns targeted at individuals who own, but do not (reliably) use, mosquito nets
Mathematical modelling of lymphatic filariasis elimination programmes in India: Required duration of mass drug administration and post-treatment level of infection indicators
Background: India has made great progress towards the elimination of lymphatic filariasis. By 2015, most endemic districts had completed at least five annual rounds of mass drug administration (MDA). The next challenge is to determine when MDA can be stopped. We performed a simulation study with the individual-based model LYMFASIM to help clarify this. Methods: We used a model-variant for Indian settings. We considered different hypotheses on detectability of antigenaemia (Ag) in relation to underlying adult worm burden, choosing the most likely hypothesis by comparing the model predicted association between community-level microfilaraemia (Mf) and antigenaemia (Ag) prevalence levels to observed data (collated from literature). Next, we estimated how long MDA must be continued in order to achieve elimination in different transmission settings and what Mf and Ag prevalence may still remain 1 year after the last required MDA round. The robustness of key-outcomes was assessed in a sensitivity analysis. Results: Our model matched observed data qualitatively well when we assumed an Ag detection rate of 50 % for single worm infections, which increases with the number of adult worms (modelled by relating detection to the presence of female worms). The required duration of annual MDA increased with higher baseline endemicity and lower coverage (varying between 2 and 12 rounds), while the remaining residual infection 1 year after the last required treatment declined with transmission intensity. For low and high transmission settings, the median residual infection levels were 1.0 % and 0.4 % (Mf prevalence in the 5+ population), and 3.5 % and 2.0 % (Ag prevalence in 6-7 year-old children). Conclusion: To achieve elimination in high transmission settings, MDA must be continued longer and infection levels must be reduced to lower levels than in low-endemic communities. Although our simulations were for Indian settings, qualitatively similar patterns are also expected in other areas. This should be taken into account in decision algorithms to define whether MDA can be interrupted. Transmission assessment surveys should ideally be targeted to communities with the highest pre-control transmission levels, to minimize the risk of programme failure
Risk to human health related to the presence of perfluoroalkyl substances in food
Acknowledgements: The Panel wishes to thank the following for their support provided to this scientific output as Hearing experts: Klaus Abraham, Esben Budtz-JĂžrgensen, Tony Fletcher, Philippe Grandjean, Hans Mielke and Hans Rumke and EFSA staff members: Davide Arcella, Marco Binaglia, Petra Gergelova, Elena Rovesti and Marijke Schutte. The Panel wishes to acknowledge all European competent institutions, Member State bodies and other organisations that provided data for this scientific output. The Panel would also like to thank the following authors and co-authors for providing additional information in relation to their respective studies: Berit Granum, Margie M Peden-Adams, Thomas Webster.Peer reviewedPublisher PD
Reimagining malaria: five reasons to strengthen community engagement in the lead up to malaria elimination
Depression und Arbeitswelt
In der WHO-Charta von Ottawa aus dem Jahre 1986 steht zu lesen: >>Die Art und Weise, wie eine Gesellschaft die Arbeit und die Arbeitsbedingungen organisiert, sollte eine Quelle der Gesundheit und nicht der Krankheit sein.<< Diese Forderung ist in der spĂ€tmodernen Arbeitsgesellschaft nach wie vor nicht eingelöst. Und Erwerbsarbeit ist kein Lebensbereich wie jeder andere. Ăber das Einkommen sichert sie das materielle Auskommen der Gesellschaftsmitglieder und ermöglicht ihnen, sich sozial zu integrieren und zu partizipieren. Deshalb sind Arbeitsplatzunsicherheit (Sverke, Hellgren u. N Ă€ swall, 2006) und Arbeitslosigkeit (Paulu. Moser, 2009) kritische Lebensereignisse, die krĂ€nken undkrank machen.
Was die Arbeitsplatzunsicherheit betrifft, so ist es nicht allein die Sorge, den Arbeitsplatz zu verlieren, die belastet. Gleiches gilt fĂŒr die verbreitete Erfahrung, dass sich die Arbeitsbedingungen der Arbeitnehmer und Arbeitnehmerinnen auf Kosten ihrer psychischen Gesundheit gravierend verschlechtern. Deshalb muss es alarmieren, wenn Besch Ă€ ftigtenbefragungen gegenw Ă€ rtig darauf hinweisen, dass etwa jeder Zweite seine gesundheitlichen Probleme in einen ursĂ€chlichen Zusammenhang mit den Arbeitsbedingungen an seinem Arbeitsplatz bringt (Zok, 2010)