EFSA NDA Panel (EFSA Panel on Dietetic Products, Nutrition and Allergies), 2013 . Scientific opinion on Dietary Reference Values for fluoride

Following a request from the European Commission, the Panel on Dietetic Products, Nutrition and Allergies (NDA) derived Dietary Reference Values (DRVs) for fluoride, which are provided as Adequate Intake (AI) from all sources, including non-dietary sources. Fluoride is not an essential nutrient. Therefore, no Average Requirement for the performance of essential physiological functions can be defined. Nevertheless, the Panel considered that the setting of an AI is appropriate because of the beneficial effects of dietary fluoride on prevention of dental caries. The AI is based on epidemiological studies (performed before the 1970s) showing an inverse relationship between the fluoride concentration of water and caries prevalence. As the basis for defining the AI, estimates of mean fluoride intakes of children via diet and drinking water with fluoride concentrations at which the caries preventive effect approached its maximum whilst the risk of dental fluorosis approached its minimum were chosen. Except for one confirmatory longitudinal study in US children, more recent studies were not taken into account as they did not provide information on total dietary fluoride intake, were potentially confounded by the use of fluoride-containing dental hygiene products, and did not permit a conclusion to be drawn on a dose-response relationship between fluoride intake and caries risk. The AI of fluoride from all sources (including non-dietary sources) is 0.05 mg/kg body weight per day for both children and adults, including pregnant and lactating women. For pregnant and lactating women, the AI is based on the body weight before pregnancy and lactation. Reliable and representative data on the total fluoride intake of the European population are not available

Recent progress and perspectives of space electric propulsion systems based on smart nanomaterials

Miniaturized spacecraft built from advanced nanomaterials are poised for unmanned space exploration. In this review, the authors examine the integration of nanotechnology in electric propulsion systems and propose the concept of self-healing and adaptive thrusters

Financial sustainability within UK charities: community sport trusts and corporate social responsibility partnerships

The change in political leadership in the UK in 2010 has created financial uncertainty and instability for many third sector organisations. In a shifting funding landscape, it is clear that an over-reliance on Government funding is a risky strategy and that there is a need to diversify and seek out alternative sources of revenue. This article considers the impact of political change on the financial sustainability of community sports trusts associated with Premier League and Football League clubs in England. It explores sources of revenue through the analysis of financial statements, revealing that on average community sports trusts receive a significant proportion of income from grant funding whilst sponsorship income is relatively small. The article goes on to discuss the potential for community sports trusts to diversify revenue streams by developing social partnerships that address the corporate social responsibility (CSR) agendas of commercial organisations. It illustrates that although commercial sponsorship can provide benefits including the provision of additional funding that can enable financial stability, key issues include the balance of power, the impact on organisational flexibility, whether there is a need to restructure, and the development of long-term partnerships. Although the findings from this article are focused on a particular type of charity, given the importance of CSR partnership income for the charities sector they may also have broader implications for other charitable organisations