Towards an integrated conceptual framework for understanding intersecting gender inequities in academic scientific research career progression in higher education institutions in sub-Saharan Africa

The slow progression and under-representation of women in senior scientific career positions is a well-known and persistent global problem, especially among university-based academics, particularly in sub-Saharan Africa (SSA). To inform action for change, we need to go beyond numerical evidence of inequalities to understanding the underlying social, cultural and institutional drivers and processes producing gender inequities in science careers. This requires a theoretically rigorous gender analysis framework that is relevant to SSA and sufficiently accounts for variations among both women and men. Since no such framework is available, we conducted a literature review of emerging theories and empirical evidence on the dimensions of and reasons for the prevailing gender inequities in higher education institutions in SSA. Based on this, we propose an integrated conceptual framework, identify available empirical findings to support it and develop a preliminary explanation of observed inequities. Our findings demonstrate that women’s (lack of) progression in academic/scientific research careers is shaped by intersections between gender roles and social power relations of gender within the family, wider society and academic institutions themselves. We argue that this integrated model provides implications for theory, practice at institutional and policy level, and future research

LARGE-SCALE WIND-TUNNEL TESTS OF A CIRCULAR PLAN-FORM AIRCRAFT WITH A PERIPHERAL JET FOR LIFT, THRUST, AND CONTROL

Wind tunnel tests of circular planform aircraft with peripheral jet for lift, thrust, and contro

Microplastics and seafood: lower trophic organisms at highest risk of contamination

Microplastic debris is a prevalent global pollutant that poses a risk to marine organisms and ecological processes. It is also suspected to pose a risk to marine food security; however, these risks are currently poorly understood. In this review, we seek to understand the current knowledge pertaining to the contamination of commercially important fished and farmed marine organisms with microplastics, with the aim of answering the question “Does microplastic pollution pose a risk to marine food security?“. A semi-systematic review of studies investigating the number of microplastics found in commercially important organisms of different trophic levels suggests that microplastics do not biomagnify, and that organisms at lower trophic levels are more likely to contaminated by microplastic pollution than apex predators. We address the factors that influence microplastic consumption and retention by organisms. This research has implications for food safety and highlights the risks of microplastics to fisheries and aquaculture, and identifies current knowledge gaps within this research field

An intersectional gender analysis of familial and socio-cultural drivers of inequitable scientific career progression of researchers in Sub-Saharan Africa

Background Sub-Saharan Africa (SSA) suffers from a dearth of concrete information on the causes of women’s under-representation in scientific research workforce particularly at higher levels compared with the wealth of information that exists in the global north. The goal of this study was to illuminate familial and socio-cultural drivers that contribute to intersectional gender inequities in scientific career progression in SSA to inform strategies that could promote career equity for African scientific researchers. Methods This study was nested within the context of ‘Developing Excellence in Leadership, Training and Science in Africa’ (DELTAS Africa)—a health-based scientific research capacity strengthening initiative. It adopted an exploratory qualitative cross-sectional study design. In-depth interviews were conducted among 58 (32 Female and 26 Male) trainees/research fellows at various career stages, affiliated to three purposively selected African Research Consortia. The interviews were conducted between May and December 2018 in English. The data were analysed inductively based on emergent themes. Results The study participants were nationals of thirteen SSA countries. More female than male participants had young children. Four themes were identified. They illustrate women’s and men’s characterisation of the normative career pathway and progression requirements which calls for significant ‘time’ commitments (theme 1), and how social power relations of gender within the family and wider society shapes their participation in scientific research activities (theme 2). This culminates in researchers'' differential experiences of navigating between the ‘two different lives’—family and career, and the resultant implications for their career progression and personal well-being (theme 3). Women researchers made different and conscious trade-offs for navigating the ‘two different lives’ by utilising various metaphors such as the ‘biological clock and career clock’, the ‘glass ball and rubber ball’, and the concept of ‘sacrifice’ (theme 4). Conclusions This study is the first of its kind to demonstrate how intersectional gender analysis through use of qualitative research methods may provide novel insights into the hidden familial and socio-cultural drivers of gender inequitable scientific research career progression. It offers important policy and practice measures and approaches for fostering career equity for women and men scientists within research capacity strengthening initiatives in SSA

Enablers of gender equitable scientific career progression in Sub-Saharan Africa: Insights from the DELTAS Africa Initiative

Background: This paper present findings on current strategies utilised within selected Developing Excellence in Leadership, Training and Science in Africa’ (DELTAS Africa) consortia to promote gender equitable scientific career progression for researchers, as well as participants’ recommendations for change. Findings are drawn from a wider research study nested within this health-based scientific research capacity strengthening initiative that was aimed at gaining an in-depth understanding of the barriers and enablers of gender equitable scientific career progression for researchers in sub-Saharan Africa. Methods: We adopted an exploratory qualitative cross-sectional study design. The main method of data collection was in-depth interviews (IDIs) with trainees/research fellows at various career stages affiliated to three purposively selected DELTAS Africa Research Consortia. In addition, key informant interviews (KIIs) with consortia research leaders/directors, co-investigators, and management team were also conducted to corroborate information gathered from the IDIs, and to provide additional insights on the enabling factors/actions and policy processes that were currently in place or proposed to enhance gender equitable career progression. In total, fifty-eight IDIs (32 female and 26 male) and twenty KIIs (4 female and 16 male) were conducted. Interviews were carried out between May and December 2018 in English. Data were analysed inductively based on emergent themes, and aligned to the developed integrated conceptual framework. Results: Three overarching themes were identified. First: micro level efforts - individual coping mechanisms and familial level support. Second: Meso level efforts -existing enabling mechanisms at the institutional level. Third: proposed solutions for positive change towards enhancing gender equitable career progression at micro, meso and macro levels. Conclusions: These findings have implications for future research capacity strengthening programming, including DELTAS Africa II initiative (2021-2025); they provide valuable insights on potential strategies and actions aiming to narrow gender inequities in scientific career progression in the context of sub-Saharan African research institutions. Keywords: Researchers’ lived experiences; enabling mechanisms; gender equity; scientific career progression; Sub-Saharan Africa; DELTAS Africa; health research capacity strengthening

Institutional-level drivers of gender-inequitable scientific career progression in sub-Saharan Africa

BACKGROUND: This study sought to determine how institutional environments, including values, policies, and their implementation, shape inequities in scientific career progression for women and men, and their disadvantages in relation to their multiple social identities in sub-Saharan Africa (SSA). The findings are drawn from a wider research study that was aimed at gaining an in-depth understanding of the barriers and enablers of gender-equitable scientific career progression for researchers in SSA. This was nested within the context of the Developing Excellence in Leadership, Training and Science in Africa (DELTAS Africa) programme—a health-based scientific research capacity-strengthening initiative. METHODS: The study adopted an exploratory qualitative cross-sectional study design. In-depth interviews (IDIs) with trainees/research fellows at various career stages supported and/or affiliated to three purposively selected DELTAS Africa Research Consortia were the main method of data collection. In addition, key informant interviews (KIIs) with consortia research leaders/directors, co-investigators, and the consortia management team were also conducted to corroborate information gathered from the IDIs, and also to provide additional insights on the drivers of intersectional gender-inequitable career progression. In total, 58 IDIs (32 female and 26 male) and 20 KIIs (4 female and 16 male) were conducted. The interviews were carried out in English between May and December 2018. The data were analysed inductively based on emergent themes. RESULTS: Three interrelated themes were identified: first, characterization of the institutional environment as highly complex and competitive with regard to advancement opportunities and funding structure; second, inequitable access to support systems within institutions; third, informal rules—everyday experiences of negative practices and culture at the workplace, characterized by negative stereotypical attitudes, gender biases, sexual harassment, and bullying and intimidation. CONCLUSIONS: We contend that understanding and addressing the social power relations at the meso-institutional environment and macro-level contexts could benefit career progression of both female and male researchers by improving work culture and practices, resource allocation, and better rules and policies, thus fostering positive avenues for systemic and structural policy changes

Changes in microphytobenthos fluorescence over a tidal cycle: implications for sampling designs

Intertidal microphytobenthos (MPB) are important primary producers and provide food for herbivores in soft sediments and on rocky shores. Methods of measuring MPB biomass that do not depend on the time of collection relative to the time of day or tidal conditions are important in any studies that need to compare temporal or spatial variation, effects of abiotic factors or activity of grazers. Pulse amplitude modulated (PAM) fluorometry is often used to estimate biomass of MPB because it is a rapid, non-destructive method, but it is not known how measures of fluorescence are altered by changing conditions during a period of low tide. We investigated this experimentally using in situ changes in minimal fluorescence (F) on a rocky shore and on an estuarine mudflat around Sydney (Australia), during low tides. On rocky shores, the time when samples are taken during low tide had little direct influence on measures of fluorescence as long as the substratum is dry. Wetness from wave-splash, seepage from rock pools, run-off, rainfall, etc., had large consequences for any comparisons. On soft sediments, fluorescence was decreased if the sediment dried out, as happens during low-spring tides on particularly hot and dry days. Surface water affected the response of PAM and therefore measurements used to estimate MPB, emphasising the need for care to ensure that representative sampling is done during low tide

Detection and characterisation of microplastics and microfibres in fishmeal and soybean meal

Aquaculture is an increasingly important source of nutrition for global food security, which is reliant on animal- and plant-based feeds. Anthropogenic particles, including microplastics and semi-synthetic cellulosic fibres, are prolific marine pollutants that are readily consumed by marine organisms, including small pelagic fish commonly used in fishmeal. Conversely, there is no indication plants can accumulate anthropogenic microparticles. We explore whether aquaculture feed presents a route of contamination for farmed fish. Commercially-sourced aquaculture feedstocks, including fishmeals and soybean meal, were processed (KOH digestion and ZnCl2 density separation) and anthropogenic particles characterised using microscopy and spectroscopic methods. Both fishmeal and soybean meals contained anthropogenic particles, with concentrations ranging 1070–2000 particles kg−1. The prevalence of anthropogenic particles in plant-based feeds indicates that the majority of contamination occurs post-harvest. Based on our findings, farmed Atlantic salmon may be exposed to a minimum of 1788–3013 anthropogenic particles from aquaculture feed across their commercial lifespan

Impact of polyester and cotton microfibers on growth and sublethal biomarkers in juvenile mussels

Anthropogenic microfibres are a prevalent, persistent and globally distributed form of marine debris. Evidence of microfibre ingestion has been demonstrated in a range of organisms, including Mytilus spp. (mussels), but the extent of any impacts on these organisms are poorly understood. This study investigates, for the first time, the effect of exposing juvenile mussels to polyester and cotton microfibres at environmentally relevant concentrations (both current and predicted future scenarios) over a chronic timescale (94 days). Sublethal biomarkers included growth rate, respiration rate and clearance rate. Mussels were exposed to polyester (median length 149 µm) and cotton (median length 132 µm) microfibres in three treatments: polyester (~ 8 fibres L−1), polyester (~ 80 fibres L−1) and cotton (~ 80 fibres L−1). Mussels exposed to 80 polyester or cotton microfibres L−1 exhibited a decrease in growth rate of 35.6% (polyester) and 18.7% (cotton), with mussels exposed to ~ 80 polyester microfibres L−1 having a significantly lower growth rate than the control population (P < 0.05). This study demonstrates that polyester microfibres have the potential to adversely impact upon mussel growth rates in realistic future scenarios, which may have compounding effects throughout the marine ecosystem and implications for commercial viability

Status of the CRESST Dark Matter Search

The CRESST experiment aims for a detection of dark matter in the form of WIMPs. These particles are expected to scatter elastically off the nuclei of a target material, thereby depositing energy on the recoiling nucleus. CRESST uses scintillating CaWO4 crystals as such a target. The energy deposited by an interacting particle is primarily converted to phonons which are detected by transition edge sensors. In addition, a small fraction of the interaction energy is emitted from the crystals in the form of scintillation light which is measured in coincidence with the phonon signal by a separate cryogenic light detector for each target crystal. The ratio of light to phonon energy permits the discrimination between the nuclear recoils expected from WIMPs and events from radioactive backgrounds which primarily lead to electron recoils. CRESST has shown the success of this method in a commissioning run in 2007 and, since then, further investigated possibilities for an even better suppression of backgrounds. Here, we report on a new class of background events observed in the course of this work. The consequences of this observation are discussed and we present the current status of the experiment.Comment: Proceedings of the 13th International Workshop on Low Temperature Detectors, 4 pages, 3 figure