385 research outputs found

    Urban Family Planning in Low- and Middle-Income Countries: A Critical Scoping Review

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    Health agendas for low- and middle-income countries (LMICs) should embrace and afford greater priority to urban family planning to help achieve a number of the global Sustainable Development Goals. The urgency of doing so is heightened by emerging evidence of urban fertility stalls and reversals in some sub-Saharan African contexts as well as the significance of natural increase over migration in driving rapid urban growth. Moreover, there is new evidence from evaluations of large programmatic interventions focused on urban family planning that suggest ways to inform future programmes and policies that are adapted to local contexts. We present the key dimensions and challenges of urban growth in LMICs, offer a critical scoping review of recent research findings on urban family planning and fertility dynamics, and highlight priorities for future research

    A strong steric hindrance effect on ground state, excited state, and charge separated state properties of a CuI-diimine complex captured by X-ray transient absorption spectroscopy

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    Steady-state and transient structures of a copper diimine dye sensitizer on TiO2 nanoparticles undergoing photoinduced interfacial electron transfer are determined.</p

    A Rapid Assessment Scorecard to Identify Informal Settlements at Higher Maternal and Child Health Risk in Mumbai

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    The communities who live in urban informal settlements are diverse, as are their environmental conditions. Characteristics include inadequate access to safe water and sanitation, poor quality of housing, overcrowding, and insecure residential status. Interventions to improve health should be equity-driven and target those at higher risk, but it is not clear how to prioritise informal settlements for health action. In implementing a maternal and child health programme in Mumbai, India, we had conducted a detailed vulnerability assessment which, though important, was time-consuming and may have included collection of redundant information. Subsequent data collection allowed us to examine three issues: whether community environmental characteristics were associated with maternal and newborn healthcare and outcomes; whether it was possible to develop a triage scorecard to rank the health vulnerability of informal settlements based on a few rapidly observable characteristics; and whether the scorecard might be useful for future prioritisation. The City Initiative for Newborn Health documented births in 48 urban slum areas over 2Ā years. Information was collected on maternal and newborn care and mortality, and also on household and community environment. We selected three outcomesā€”less than three antenatal care visits, home delivery, and neonatal mortalityā€”and used logistic regression and classification and regression tree analysis to test their association with rapidly observable environmental characteristics. We developed a simple triage scorecard and tested its utility as a means of assessing maternal and newborn health risk. In analyses on a sample of 10,754 births, we found associations of health vulnerability with inadequate access to water, toilets, and electricity; non-durable housing; hazardous location; and rental tenancy. A simple scorecard based on these had limited sensitivity and positive predictive value, but relatively high specificity and negative predictive value. The scorecard needs further testing in a range of urban contexts, but we intend to use it to identify informal settlements in particular need of family health interventions in a subsequent program

    Does social capital travel? Influences on the life satisfaction of young people living in England and Spain

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    <p>Abstract</p> <p>Background</p> <p>This study used a social capital framework to examine the relationship between a set of potential protective ('health assets') factors and the wellbeing of 15 year adolescents living in Spain and England. The overall purpose of the study was to compare the consistency of these relationships between countries and to investigate their respective relative importance.</p> <p>Methods</p> <p>Data were drawn from the 2002, English and Spanish components of the WHO Health Behaviour in School-Aged Children (HBSC) survey A total of 3,591 respondents (1884, Spain; 1707, England) aged 15, drawn from random samples of students in 215 and 80 schools respectively were included in the study. A series of univariate, bivariate and multivariate (general linear modelling and decision tree) analyses were used to establish the relationships.</p> <p>Results</p> <p>Results showed that the wellbeing of Spanish and English adolescents is similar and good. Three measures of social capital and 2 measures of social support were found to be important factors in the general linear model. Namely, family autonomy and control; family and school sense of belonging; and social support at home and school. However, there were differences in how the sub components of social capital manifest themselves in each country--feelings of autonomy of control, were more important in England and social support factors in Spain.</p> <p>Conclusions</p> <p>There is some evidence to suggest that social capital (and its related concept of social support) do travel and are applicable to young people living in Spain and England. Given the different constellation of assets found in each country, it is not possible to define exactly the precise formula for applying social capital across cultures. This should more appropriately be defined at the programme planning stage.</p

    Raman vibrational dynamics of hydrated ions in the low-frequency spectral region

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    The hydration structure of ions in aqueous environments can have a significant influence on their chemical and biological properties. Due to its inherent dynamical character, determination of the hydration shell around dissolved ions has proved challenging, mainly so for cations such as sodium and potassium which form diffuse and dynamic hydrating structures. The low frequency polarized Raman spectrum, as retrieved by time resolved isotropic optical Kerr effect measurements, is sensitive to structural fluctuations and can reveal information about ion-water interactions through their Raman active vibrational modes. Here we study a series of mixtures of sodium, potassium and lithium hydroxide solutions by changing cation concentration pairwise (namely, sodium/potassium or sodium/lithium) while keeping constant the hydroxide concentration. The hydroxide-water hydrogen bond vibration, which produces a well-defined isotropic Raman mode, appears at higher frequencies from the cation-water Raman active vibrations. In addition to previously reported lithium-water low frequency vibrations, clear spectral features could be resolved from the concentration studies and assigned to sodium-water hydration shell vibrations. However, potassium related low frequency spectral features remain elusive. The same method was applied to mixtures of the same cations with a halide anion (chloride) in order to rule out any specific features related to the dissolved hydroxide anion. Comparison between halide and hydroxide measurements confirmed the presence of the cation modes and further revealed a low frequency spectral feature related to hydroxide induced changes in water polarizability

    Flood Risk Assessment for Urban Drainage System in a Changing Climate Using Artificial Neural Network

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    Changes in rainfall patterns due to climate change are expected to have negative impact on urban drainage systems, causing increase in flow volumes entering the system. In this paper, two emission scenarios for greenhouse concentration have been used, the high (A1FI) and the low (B1). Each scenario was selected for purpose of assessing the impacts on the drainage system. An artificial neural network downscaling technique was used to obtain local-scale future rainfall from three coarse-scale GCMs. An impact assessment was then carried out using the projected local rainfall and a risk assessment methodology to understand and quantify the potential hazard from surface flooding. The case study is a selected urban drainage catchment in northwestern England. The results show that there will be potential increase in the spilling volume from manholes and surcharge in sewers, which would cause a significant number of properties to be affected by flooding
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