Purpose The objectives of this study were to assess the black soldier fly larvae (BSFL) composting potential and to analyse the quality of organic fertilizer produced for agricultural purposes. Methods The waste biodegradation was determined by varying waste feed treatment (2, 2.5, 3.0, 3.5, to 4 kg) and control treatment of (2 kg) of heterogeneous mixture of municipal organic solid waste from market, restaurant and households. Each of the setups received equal number of viable larvae (i.e. 2000) which were 5-6 days old. To analyse the nutrient concentration of the compost residues with BSFL, the substrate and final compost were evaluated based on the levels of NPK as well as the C:N ratio. To evaluate the toxic levels of the final compost in terms of heavy metals, the presence and levels of As, Cd, Fe, Pb and Ni were investigated. Results The analysis showed that there was high percentage increase of nitrogen, phosphorus and potassium levels, i.e. 41.2% (SD ± 0.71%), 32.4% (SE ± 0.2%) and 77.1% (SE ± 0.19%), respectively. It was found that the larvae degraded more than half of the total substrate within 2 weeks. The study showed a decrease in heavy metal concentrations after larvae composting. Conclusion The study revealed that the concentration of NPK increased significantly among the treatment groups. The study further revealed that some of the heavy metals under investigation had reduced to an acceptable level according to the standards of both local and international regulatory bodies.
Background: This study determined awareness and occupational exposures to needlestick injuries (NSIs) and its associated risk factors among healthcare workers (HCWs) in the Kumasi Metropolis, Ghana. Materials and Methods: A descriptive cross-sectional study was conducted among a total of 540 HCWs from three selected tertiary hospitals in the Kumasi Metropolis, Ghana. Data were collected using a structured questionnaire and analyzed. Results: All the study participants were aware of NSI and NSI-associated hepatitis B virus (HBV), hepatitis C virus, or human immunodeficiency virus (HIV) acquisition. Most of them (63.6%) were trained on the safety use of sharps devices and the majority of them preferred safety-engineered devices (79.8%). A greater proportion of the participants has had HBV vaccination (85.9%). The prevalence of NSIs was approximately 47%. NSIs were highly ranked to occur at patient's bedside (28.5%) and clinical laboratories (24.6%). Handling of needles/sharp objects before usage (27.7%) and during usage (34.0%) ranked the second and first cause of NSIs among health workers, respectively. Compared with those with less than 5 years working experience, having worked at the health facility between 5 and 10 years (prevalence rate ration [PRR] = 2.07 [1.39–3.11], p = 0.0004), 11–15 years (PRR = 4.32 [2.14–8.73], p < 0.0001), and >15 years (PRR = 5.73 [2.40–13.70], p < 0.0001) were associated with increased events of NSI. Conclusion: Despite the high awareness of NSIs and its perceived risk of infection acquisition, the prevalence of NSIs was high among HCWs. There is, therefore, the need for employers to enforce the universal precaution practices, provide regular training and education, and ensure adherence of HCWs to safety precaution of needle usage disease.
Background and Aims: Magnesium sulfate (MgSO 4 ) treatment is widely used for the prevention of eclamptic seizures. However, its effect on mediators of endothelial dysfunction (ED) and electrolytes remains unclear. We evaluated the effects of MgSO 4 treatment on mediators of ED and electrolytes. Methods:We recruited 100 women comprising 50 severe, 50 mild preeclampsia (PE) as cases and 50 normotensive pregnant women as controls from the Sampa Government Hospital, Ghana. We estimated for adrenomedullin (AM), calcitonin gene-related peptide (CGRP), soluble forms of intercellular adhesion molecule-1 (sICAM-1), Na + , K + , and Mg 2+ before MgSO 4 treatment, 24 h after MgSO 4 treatment, and 48 h after delivery. p < 0.05 were considered significant for statistical analyses.Results: Levels of AM, sICAM-1, and Na + decreased significantly at 24 h after MgSO 4 treatment and 48 h after delivery among PE women compared to the AM levels before treatment (p < 0.0001). The levels of CGRP and Mg 2+ increased significantly after 24 h of MgSO 4 treatment and 48 h after delivery among PE compared to the AM levels before treatment (p < 0.0001). The changes in AM, sICAM-1, CGRP, and Mg 2+ at 24 h after treatment and 48 h after delivery were significantly higher in severe compared to mild PE (p < 0.0001). AM levels reduced significantly by 14.7% in mild and 42.7% in severe PE after MgSO₄ treatment (p < 0.05). sICAM-1 levels reduced significantly by 20.9% in mild and 25% in severe PE after MgSO₄ treatment. After MgSO₄ treatment, there was significant increase of 42.1% and >100% in CGRP levels in mild and severe PE, respectively (p < 0.05). After MgSO₄ treatment, Mg²⁺ levels increased significantly by 67.0% and 63.8% in mild and severe PE, respectively (p < 0.05). Conclusion:MgSO₄ treatment reduces AM, sICAM-1, and sodium levels but improves magnesium and CGRP in severe than mild PE thus have more beneficial role in severe PE.
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