Performance characteristics of 15 kVA homopolar inductor alternator for 400 Hz Brayton-cycle space-power system

Performance test of homopolar inductor alternator for Brayton cycle space power syste

Mothers' experiences of wellbeing and coping while living with rheumatoid arthritis : a qualitative study

Background: Rheumatoid arthritis (RA) can result in difficulties for mothers when undertaking daily care activities and increased psychological distress. However, few studies have examined how women with RA subjectively experience coping and wellbeing as part of their motherhood. Methods: Twenty mothers with a diagnosis of RA and a dependent child (18 years or younger) who were living in Australia took part in a semi-structured interview between June and November 2017. Purposive sampling was undertaken to include participants across degree of current RA severity, number and age of children, and having received a diagnosis before or after a first child to take account of variability across these experiences. A qualitative thematic analysis was conducted on the interview transcripts. Results: The following themes were identified: ‘Burden and complexity in the mothering role’, ‘Losing control: Women’s experiences of distress’, and ‘Adjusting and letting go: Women’s experiences of wellbeing’. Experiences of distress, including feelings of failure, were associated with accounts of a loss of control over mothering practices among women, regardless of child age. In contrast, accounts of adjusting mothering practices and relinquishing control were associated with reports of enhanced wellbeing. In addition, some mothers reported greater ease due to increased independence of older children. The absence of social support exacerbated burden and distress in the women’s accounts, while the availability of support alleviated burden and was associated with reports of wellbeing. Conclusion: Health professionals and services can provide support to mothers with RA by addressing feelings of failure, acknowledging strategies of adjustment and letting go, and encouraging access to social support

Maternal health service utilisation of adolescent women in sub-Saharan Africa : a systematic scoping review

Introduction: Sub-Saharan Africa has the highest rate of adolescent pregnancy in the world. While pregnancy during adolescence poses higher risks for the mother and the baby, the utilisation of maternity care to mitigate the effects is low. This review aimed to synthesise evidence on adolescent mothers’ utilisation of maternity care in Sub-Saharan Africa and identify the key determinant factors that influence adolescent mothers’ engagement with maternity care. Method: A systematic review of scholarly literature involving seven databases: ProQuest, PubMed, EMBASE/Elsevier, SCOPUS, PsycINFO, CINAHL and Infomit was conducted. Studies published in English between 1990 and 2017 that examined Sub-Saharan adolescent mothers’ experiences of utilising biomedical maternity care during pregnancy, delivery and the post-partum period were included. Results: From 296 relevant articles 27 were identified that represent the experience of adolescent mothers’ maternal health service utilisation in Sub-Saharan Africa. The review indicates that maternal health service utilisation in the majority of Sub-Saharan African countries is still low. There is also a wide discrepancy in the use of maternity care services by adolescent mothers across countries in Sub-Saharan Africa. Conclusions: The review reveals that a significant number of adolescents in Sub-Saharan Africa do not access and use maternity services during pregnancy. Several factors from individual to systemic levels contributed to low access and utilisation. This implies that interventions targeting the women, their partners, healthcare professionals, communities and the organisations (local to national) are necessary to improve adolescent mother’s engagement with maternity care in Sub-Saharan Africa

"I treat my daughters not like my mother treated me" : migrant and refugee women's constructions and experiences of menarche and menstruation

Menstruation is a material reality at some point in most women’s lives. Yet, the discursive meaning assigned to menstruating bodies and the way in which they are experienced is dependent on the sociocultural and historical spaces which they occupy (Lee and Sasser-Coen 1996, 13). Across cultural contexts, menarche is constructed as a symbolic transition from childhood to womanhood, a period of growth and change, often linked with sexual maturation (Lee 2009, 622). While menstrual activists, artists, poets, and women’s rights organizations are challenging negative representations and practices surrounding menstruation (Bobel 2010, 42), dominant discourses often still portray menstruation as something dirty and disgusting, and a bodily function to be silenced and concealed (Brantelid, Nilvér, and Alehagen 2014, 606; Mason et al. 2013, 4; see also Wood [Chapter 25] in this volume)

Evolutionary dynamics of group interactions on structured populations: a review

Interactions among living organisms, from bacteria colonies to human societies, are inherently more complex than interactions among particles and non-living matter. Group interactions are a particularly important and widespread class, representative of which is the public goods game. In addition, methods of statistical physics have proved valuable for studying pattern formation, equilibrium selection and self-organization in evolution- ary games. Here, we review recent advances in the study of evolutionary dynamics of group interactions on top of structured populations, including lattices, complex networks and coevolutionary models. We also compare these results with those obtained on well-mixed populations. The review particularly highlights that the study of the dynamics of group interactions, like several other important equilibrium and non-equilibrium dynamical processes in biological, economical and social sciences, benefits from the synergy between statistical physics, network science and evolutionary game theory

Postnatal care service utilisation in Ethiopia : reflecting on 20 years of demographic and health survey data

Background: Most maternal deaths in the world occur during the postpartum period, especially within the first two days following delivery. This makes postnatal care (PNC) critical to improving the chances of maternal and child survival. Over the past 20 years, the proportion of women receiving antenatal care (ANC) in Ethiopia has increased while the proportion of those receiving PNC has remained low. This study aimed to understand the trends, determinants and urban–rural variations of PNC service utilisation. Methods: This study draws on the Ethiopian Demographic and Health Survey (EDHS) data for the years 2000 (n = 4552), 2005 (n = 4467), 2011 (n = 4445) and 2016 (n = 4275) to estimate the trends and determinants of PNC service utilisation. Multivariate logistic regression models with adjustment for clustering and sampling weights were used to investigate the association between the independent factors, the study factors and PNC service utilisation. Results: Over the twenty-year period of the EDHS, the proportion of Ethiopian women who received PNC services increased from 5.6% (95% CI: 4.6–6.9%) in 2000 to 18.5% (95% CI: 16.4–20.7%) in 2016. Similarly, women who received PNC services in urban areas increased from 15.2% (95% CI: 23.6–30.7%) in 2000 to 47% (95% CI: 60.4–67.3%) in 2016. Women who were in the wealthy quintile, had ANC visits, delivered in a health facility, and delivered by caesarean section were most likely to have PNC. The present study also showed that whilst birth spacing was a significant factor among urban women, wealth index, ANC visits, and perception of health facility distance were significant factors among rural women. Conclusions: The study suggests low levels of utilisation of PNC among Ethiopian women from rural districts. Geographically targeted interventions with a focus on low-socioeconomic rural women, and those with no previous contacts with the health system during pregnancy, are needed to improve PNC in Ethiopi

Evaluation of Differences in Body Composition and Carcass Characteristics in Lambs Divergent in Residual Feed Intake

The objective of this study was to evaluate differences in growth performance, carcass characteristics and quality, and body composition in lambs selected for divergent residual feed intake (RFI). Mixed-breed 4-mo-old wether lambs (n = 65) were placed on a 47 d feeding trial in September, 2014 to obtain an estimate of individual intake. Residual feed intake, an efficiency measurement based upon the difference in actual and expected feed intake, wascalculated for each lamb. Wethers with an RFI of one standard deviation greater (HIGH; less efficient; n = 6) or lower (LOW; more efficient; n = 6) than the mean RFI (approximately 0) of the 65 wethers were used in the present study. Lambs were processed, and organ weights and carcass data were collected in December, 2014. Performance measures were not affected (P > 0.05) by RFI class. Back fat thickness (BF) and yield grade (YG) were greater (P < 0.03) in HIGH lamb carcasses, while rumen weight (P<0.005), total GIT and viscera weights (P<0.03), and lung and trachea weights (P<0.03) were greater in LOW lamb carcasses.Regression of lung weight on hot carcass weight (HCW) indicated that lighter carcasses had102 © Intermountain Journal of Sciences, Vol. 21, No. 1-4, December 2015 heavier lungs (P < 0.02, R2=0.45); this relationship was observed in both RFI classes (HIGH: P < 0.04; R2 = 0.68; LOW: P < 0.04; R2 = 0.68). In growing lambs, selection for RFI seems to affect fat deposition and visceral organ weights, although more research is necessary tounderstand the relationship between lung weight, RFI, and HCW