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This paper presents a combined experimental and computational result on the mechanical and thermal properties of calcined clay‐agrowaste char composites for sustainable building applications. The calcined clays were characterized for their structural, microstructural, mechanical, and thermal properties after they were mixed with 5 wt%, 10 wt%, 15 wt%, and 20 wt% of agrowaste char of varying sources (i.e., coconut, palm kernel, and acacia). Analytical and finite element analyses were used to predict and also confirm the experimentally determined results. The results show that increasing char fractions increases the thermal energy properties but reduces the mechanical properties. For the compressive strength results, it was noted that the palm kernel char composite recorded the highest compressive strength (∼4.60 MPa) followed by coconut char (∼4.23 MPa) and acacia char composites (∼4.14 MPa). The optical micrographs show uniform distribution of the char in the clay/cement matrix. The analytical and finite element analysis predictions show that the sample with microcracks recorded appreciable fracture toughness (∼38.2 MPa/mm −0.5 ) and slow rate of energy release during fracture. The implications of the results are discussed to elaborate on the role calcined clays and agrowaste chars plays on the thermal and mechanical properties for a sustainable building materials industry.

Drinking water contaminated by pathogenic micro-organisms increases the risk of infectious gastrointestinal disease which could potentially lead to acute kidney injury and even death, particularly amongst the young and the elderly. Earlier studies have shown a substantial reduction in the incidence of diarrheal disease over a period of one year using a polysulfone membrane water gravity-powered water filtration device. The current report is a continuation of these studies to assess the long-term effects of the innovative method on diarrheal incidence rates over a 4-year follow-up period. This follow-up study monitored the trend of self-reported diarrheal events in all households in the previously studied villages for 5 months, in the last half of each study year, using the same questionnaire utilized in the earlier study. Three villages that had no device yet installed served as controls. We computed monthly diarrheal incidence rates for all study years (standardized to per 100 person-months) and compared these to the pre-device incidence rate in 2018 and in the control group, using the Wilcoxon rank sum exact test. The average diarrheal incidence rates of 1.5 p100pm in 2019, 2.19 p100pm in 2021, and 0.54p100pm in 2022 were significantly different from an earlier study that reported 17.8 p100pm rates before the devices were installed in 2018, (all p-values < 0.05). Concomitantly, self-reported diarrheal infections were substantially higher in the “control villages” not yet having the filtration device installed (80.9, 77.6, and 21.5 per 100 pm). The consistent and large reduction in diarrhea incidence documents the long-term efficacy of the use of the membrane filtration device. This simple water purification method using gravity flow improves public health in remote regions with limited resources.

Background The burden of diarrhoea morbidity and mortality among children under 5 years is higher in developing countries than in developed regions. Residents of informal settlements in many developing lower‐and‐middle‐income countries (LMICs) have a relatively high prevalence of diarrhoea and diarrhoea‐related diseases. Mothers are the burden bearers during children's diarrhoea episodes. Therefore, maternal knowledge and management skills are important to minimise the effects of morbidity and mortality associated with diarrhoeal diseases. Methods This cross‐sectional study was conducted among mothers residing in an informal settlement to assess their knowledge of diarrhoea prevention and home‐based management practices. An interviewer‐based questionnaire was used to gather information, imported into Microsoft Excel (Microsoft) and exported to STATA software version 13.1 (Stata) for data analysis. We performed descriptive multivariable analysis to find out participants knowledge of diarrhoea prevention and home‐based management practices and associated factors. Results A total of 428 participants participated in this study, with the majority, 6 64.5% (276/428) having good knowledge of prevention and home‐based management of diarrhoea among children under 5 years. Multivariable logistic regression analysis, participants who were multiparous and completed tertiary were 4.01 [confidence interval (CI) = 3.23–7.15; p = <0.0001] and 2.02 (CI = 2.16–4.91; p = 0.005) times likely to have good knowledge. Participants who had attained tertiary education and earned monthly income above Gh¢ 4000 were 7.21 (CI = 5.24–16.5; p < 0.0001) and 12.4 (CI = 4.80–33.3; p < 0.0001) likely to have good practice of prevention and home‐based management of diarrhoea among children under 5 years. Conclusion These findings may serve as a basis for developing specific interventions to enhance good knowledge and good practice regarding home‐based management of diarrhoea among children under five. Practitioners can provide targeted education, empower mothers to implement proper preventive measures and timely interventions thereby reducing the impact and severity of diarrhoeal episodes in children under 5 years in urban informal settlements.

Objectives: This study was conducted to determine the source of medicines and medicine information of persons living with hypertension and diabetes in rural and urban Ghana and assessing if they are influenced by predisposing and enabling factors as defined by Andersen’s behavioural model. Methods: A population based cross sectional study was conducted in four (4) rural and four (4) urban districts in the Ashanti Region of Ghana. A multistage and proportional sampling method was used in enrolling participants aged 18 years and above. A pre-tested structured questionnaire was used to collect primary data from respondents. Data collected was exported to STATA for analysis. Descriptive analysis was performed. Chi-square tests/Fisher’s exact test and multinomial logistic regression models were used to establish association between variables. Results: A total of 336 self -reported persons with hypertension and diabetes were enrolled in the study with 199(59.23%) living in urban communities. The majority of participants with hypertension and diabetes living in the rural communities 77 (56.20%) were females contrasting with the male majority in urban communities 106 (53. 27%). In the rural communities, 49 (35.77%) of participants sourced medicines from the health centre while 45 (32.85%) and 35(25.55%) sourced medicines from the hospital and over the counter medicine shop (OTCMS) respectively. In the urban communities, 153 (76.88%) sourced medicines from the hospital while 33 (16.58%) sourced medicines from the pharmacy. The predisposing factor age (OR: 1.1, 95%CI 1.040-1.210) under OTCMS, age (OR 1.0, 95%CI: 1.002-1.066) under hospital and enabling factor socioeconomic status (OR: 0.3, 95%CI 0.085-0.855) under Hospital influenced participant’s source of medicine in the urban communities. The results also revealed that majority of participants in both rural 99 (72.26%), and urban 164 (82.41%) communities sourced medicine information mainly from public healthcare facilities, pre-disposing factors; age (OR 1.1 95%CI 1.032-1.270) under family member, age (OR 1.1, 95%CI 1.022-1.167) under friend health professional, age (OR 1.1, 95%CI 1.050-1.147) under nearest health institution, marital status (OR: 0.004, 95%CI 0.003-0.441) under friend health Professional were found to influence participants’ source of medicine information in the urban communities while in the rural communities the predisposing factor marital status (OR 10.6, 95%CI 1.044 -106.835), education (OR: 26.1, 95%CI 1.271-537.279) under friend health professional, age (OR 1.1, 95%CI 1.002-1.187), educational level (OR 30.6, 95%CI 1.718-546.668) under nearest health institution and enabling factor socio-economic status (OR 6.6, 95%CI 1.016 -43.510) under nearest health institution influenced one’s source of medicine information. Conclusions: Majority of inhabitants with hypertension and diabetes in both rural and urban communities, sourced medicines and medicine information from public health institutions though a larger proportion was recorded in the urban communities. More participants in the rural communities than in the urban communities sourced medicines and medicine information from community pharmacies. Participants’ source of medicine and medicine information was influenced by both predisposing and enabling factors.