Browsing by Author "Amoah, P.A."
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Item Assessment of Nuclear Moisture Density Gauges at a Secondary Standard Dosimetry Laboratory in Ghana during December 2015–December 2017(Iranian Journal of Medical Physics, 2020-01) Owusu-Banahene, J.; Appiah, P.; Adjei, D.N.; Gbekor, B.D.; Amoah, P.A.; Owusu-Manteaw, P.; Amoako, J.K.; Darko, E.O.; Asiedu, G.O.Introduction: Nuclear moisture density gauges are widely used in construction industry in different countries across the world, including Ghana, on a large scale. Like all irradiating devices, the nuclear gauges should be subjected to radiation safety assessment based on radiation protection and safety principles. Regarding this, the objective of this research was to investigate the radiation safety of the nuclear moisture density gauges to ensure the absence of any leakages from the radioactive source. Material and Methods: For the purpose of the study, a survey meter (RADOS-120) was used to measure and record the radiation dose once at a distance of 1 m from the surfaces of all sides of the nuclear moisture density gauge and very close distance from the surfaces of the device. Moreover, the device was examined using radiation contamination test and counts on a standard block. Results: A total of nine nuclear moisture density gauges manufactured by Troxler Electronics Inc. in the USA were evaluated within a period of 3 years. The minimum and maximum average dose rates were 0.49 and 66.67 μSv/h, respectively. The highest and lowest average dose rates were recorded in 2017 and 2016 on the devices with serial numbers of 38260 and 32839, respectively. Conclusion: The assessment of the nuclear moisture density gauges under study revealed no radiation contamination leakage. Furthermore, all the evaluated gauges were shown to function properly and were safe for the intended purposesItem Association between remembering difficulty and anxiety and depression among children in Ghana(Journal of Affective Disorders Reports, 2022) Dziwornu, E.; Dey, N.E.Y.; Ansah, K.O.; Arthur-Holmes, F.; Duah, H.O.; Amoah, P.A.; Agbadi, P.Item Socio-economic and technological aspects of mental health of older persons: the role of strong and weak ties in Ghana(Ageing & Society, 2022) Amoah, P.A.; Osei-Tutu, A.; Adjei, S.B.Research indicates that social capital can influence the extent to which socio-economic status (SES) and information and communications technology (ICT) affect mental health. This study uses empirical data to examine the veracity of this claim by examining the effect of SES and ICT use on the mental health of older persons in Ghana, as well as the moderating role of bonding (i.e. strong ties) and bridging (i.e. weak ties) social capital in these associations. Data were drawn from 409 older persons from four regions in Ghana as part of of a broader cross-sectional survey. Ordinal logistic regression analyses showed that SES and ICT use had positive associations with mental health after adjusting for other socio-demographic factors. Bridging social capital modified the association between SES and mental health positively. Bonding social capital also moderated the relations between ICT use affects mental health positively. We argue that the prevalent nature of resources embedded in strong ties and the diversity of support that emerges from weak ties for the difference in their influence observed in this study. Thus, while advances in socioeconomic and technological conditions can enhance older persons’ mental health, equal attention must be paid to the characteristics of their strong and weak ties, as they possess the resources to make socio-technological policies even more meaningful.