The health-related impacts and costs of violence against women and girls on survivors, households and communities in Ghana

Past research on violence in Ghana primarily discusses domestic violence and some types of sexual violence, but lacks a comprehensive analysis of violence against women and girls (VAWG) and its wider costs and impacts. Our study on the social costs of VAWG is a unique contribution, which aims to fill that gap. Through indepth interviews (IDIs) and focus group discussions (FGDs) with adult women and men, we explored the health impact of VAWG and the resulting social and economic consequences on survivors, their families and their communities. The research, which took place in the Eastern, Central, and Greater Accra regions of Ghana, points to several physical and mental health outcomes among survivors including physical injuries and disability, as well as impacts on mental health such as anxiety and suicidal ideation. Many VAWG survivors also experience stigma and social isolation. Our findings also reveal that survivors’ families can bear various social and economic costs. Lack of public and private service provision and shelters for survivors heighten these impacts. Without institutional support for survivors, families and communities absorb these costs of VAWG

Uncanny Objects and the Fear of the Familiar:Hiding from Akan Witches in New York City

This article examines the cosmology and secret practices of West African traditional priests in New York City in preventing the spread of witchcraft, an evil invisible spirit transmitted between female members of the Akan matrilineage. Explored is an uncanny dynamic as everyday habitus becomes increasingly strange in the world of a young Ghanaian woman in the Bronx, who has become petrified of insinuations of witchcraft from close family members. In trying to hide the young woman from infection by her fellow witches, Akan priests attempt to ‘capture’ her habits and everyday routines, calling upon the iconic magic of New York City in order to ‘misplace’ familiarity within the anonymity of Manhattan. In this process, the transmission of the witch’s spirit to the intended victim is disturbed as the victim’s life and things are moved. Nowhere to be found, the witch shifts her attention to other victims

The influence of rice husk ash addition on the properties of metakaolin-based geopolymers

This paper investigates the replacement of metakaolin (MK) with rice husk ash (RHA) in the production of alkali-activated binders or geopolymers. The influence of the RHA addition on compressive and flexural strength, as well as water absorption and apparent porosity were determined, in terms of the percentage of RHA in the mixture and molar ratios of the mixes. Fourier Transform Infrared (FTIR) spectroscopy and Energy Dispersive spectroscopy (EDS) were carried out to assess the changes in the microstructure of the geopolymer matrices with the RHA addition. Results have shown that RHA may be a supplementary precursor for geopolymers. The composition of the geopolymer matrices containing 0-40% RHA is very similar, which indicates that the additional Si provided by RHA is not incorporated to the geopolymer matrix. In addition, geopolymers with RHA content higher than 40% present a plastic behavior, characterized by extremely low strength and high deformation, which can be attributed to the formation of silica gel in formulations containing variable Si/Al ratio

Influence of slag composition on the stability of steel in alkali-activated cementitious materials

Among the minor elements found in metallurgical slags, sulfur and manganese can potentially influence the corrosion process of steel embedded in alkali-activated slag cements, as both are redox-sensitive. Particularly, it is possible that these could significantly influence the corrosion process of the steel. Two types of alkali-activated slag mortars were prepared in this study: 100% blast furnace slag and a modified slag blend (90% blast furnace slag? 10% silicomanganese slag), both activated with sodium silicate. These mortars were designed with the aim of determining the influence of varying the redox potential on the stability of steel passivation under exposure to alkaline and alkaline chloride-rich solutions. Both types of mortars presented highly negative corrosion potentials and high current density values in the presence of chloride. The steel bars extracted from mortar samples after exposure do not show evident pits or corrosion product layers, indicating that the presence of sulfides reduces the redox potential of the pore solution of slag mortars, but enables the steel to remain in an apparently passive state. The presence of a high amount of MnO in the slag does not significantly affect the corrosion process of steel under the conditions tested. Mass transport through the mortar to the metal is impeded with increasing exposure time; this is associated with refinement of the pore network as the slag continued to react while the samples were immersed

The effect of Al2O3 and SiO2 on setting and hardening of Na2O-Al2O3 -SiO2-H2O geopolymer systems

This study investigates the effect of Al2O3 and SiO2 on setting behaviour and early strength development characteristics of low-temperature cured Na2O-Al2 O3-SiO2-H2O systems. The study also explores associated mineral and micro-structural phase development. Geopolymer mixtures with varying amounts of SiO2 and Al2O3 but constant H2O/Na2O molar ratios prepared using alkali-activated metakaolin and cured at 40° up to 72 hrs were examined by XRD and SEM-EDAX techniques to characterise microstructures of these systems. It was revealed that the setting time of the geopolymer systems is mainly controlled by Al2O3 and that the setting time increased with increasing SiO2/Al2O3 ratio of the initial mixture. However, the amount of Si seems to play an important role in subsequent strength development. Increasing SiO2/Al2O3 molar ratios up to 3.4-3.8 is largely responsible for the high strength gains observed at later stages. A corresponding increase in Al2O3 (low SiO2/Al2O3) leads to products of low strengths, accompanied by microstructures with increased Na-Al-Si "massive" structures rather than the regular amorphous Na-Al-Si-containing matrix. The underlying chemistry of above changes is discussed with respect to basic dissolution-hydrolysis-condensation processes that occur in Na2O-Al2 O3-SiO2-H2O systems