Adopting an ethical approach to migration health policy, practice and research

Migration health is affected by decision making at levels ranging from global to local, both within and beyond the health sector. These decisions impact seeking, entitlements, service delivery, policy making and knowledge production on migration health. It is key that ethical challenges faced by decision makers are recognised and addressed in research and data, clinical practice and policy making on migration health. An ethical approach can provide methods to identify ethical issues, frameworks for systematising information and suggesting ethically acceptable solutions, and guidance on procedural concerns and legitimate decision making processes. By unpacking dilemmas, conflicts of interests and values at stake, an ethical approach is relevant for all who make decisions about migration health policy and practice. Adopting an ethical approach to migration health benefits governments, organisations, policy makers, health workers, data managers, researchers and migrants themselves. First, it highlights the inherent normative questions and trade-offs at stake in migration health. Second, it assists decision makers in deciding what is the ethically justifiable thing to do through an ‘all things considered’ approach. Third, ethical frameworks and technical guidance set normative and practical standards for decision makers facing ethical questions – from ‘bedside rationing’ to collection of big data or in policy making – that can ensure that migrants’ interests are considered. Fourth, there is a need for greater transparency and accountability in decision making, as well as meaningful participation of migrant groups. An ethical approach connects to public health, economic and human rights arguments and highlights the urgent need to mainstream concerns for migrants in global and national health responses

Effects of five years of frequent N additions, with or without acidity, on the growth and below-ground dynamics of a young Sitka spruce stand growing on an acid peat: implications for sustainability

International audienceA field manipulation study was established to demonstrate effects of simulated wet N and S deposition on a young (planted 1986) stand of Sitka spruce growing on a predominantly organic soil in an area of low (8?10 kg N ha-1 yr-1) background N deposition in the Scottish borders. From 1996, treatments (six) were applied to the canopies of ten-tree plots in each of four blocks. N was provided as NH4NO3, either with H2SO4 (pH 2.5) at 48 or 96 kg N ha-1 yr-1 inputs or without, at 48 kg N ha-1 yr-1 along with wet (rain water) and dry controls (scaffolding) and a S treatment (Na2SO4). Positive responses (+ >20% over 5 years) with respect to stem area increment were measured in response to N inputs, irrespective of whether acid was included. The positive response to N was not dose related and was achieved against falling base cation concentrations in the foliage, particularly with respect to K. The results suggest young trees are able to buffer the low nutrient levels and produce new growth when there is sufficient N. Inputs of 96 kg N ha-1 yr-1, in addition to ambient N inputs, on this site exceeded tree demand resulting in elevated foliar N, N2O losses and measurable soil water N. These excessive N inputs did not reduce stem area growth. Keywords: acid, canopy application, nitrogen, acid organic soil, simulated wet deposition, soil water, sulphur, young Sitka spruc

Micro-fabricated caesium vapour cell with 5mm optical path length

Micro-fabricated vapour cells have applications in a number of emerging quantum technology based devices including miniaturized atomic magnetometers, atomic clocks and frequency references for laser systems. Increasing the cell optical path length (OPL) and smallest cell dimension is normally desirable to increase the signal to noise ratio (SNR) and minimize the de-polarization rate due to collisions between atomic or molecular species and the cell walls. This paper presents a fully wafer-level scalable fabrication process to manufacture vapour cells with dimensions approaching those of glass-blown cells. The fabrication process is described and spectroscopic measurements (optical absorption and magnetic resonance) are reported. A magnetic resonance linewidth of 350 Hz is demonstrated, this is the smallest linewidth reported to date for a micro-fabricated vapour cell