Effect of rumen content to water ratio in biogas production

Biogas technology is widely used as a better alternative in the handling of waste in many societies in the world. This study was conducted to investigate the effect of rumen content to water ratio in biogas production. An experiment was carried out using 75 litre capacity locally made anaerobic digester. Rumen contents were formulated in three proportions designated as T1, T2 and T3. T1 contained 30kg of rumen contents and 30 litres of tap water; T2 contained 20kg of rumen contents and 40 litres of tap water; and T3 contained 40kg of rumen contents and 20 litres of tap water. Each proportion was duplicated and the whole experiment was triplicated for 20 days each. The pH, substrate, ambient temperatures and the biogas produced were recorded in two days’ interval up to the 20 days. The result obtained from the study showed that there were significant differences (P < 0.05) in the average pH and the biogas produced. The pH of T2 (6.97) was significantly higher than that of T1 (6.80) and T3 (6.81). The biogas produced by T3 was significantly higher than that of T1 and T2. T3 produced the highest average volume of 16.70m3 biogas per kilogram of rumen content and the highest percentage (56.4%) of methane. There were no significant differences (P > 0.05) in the average substrate and ambient temperatures, and the volume of CO2 produced. This study revealed that it is more efficient to produce biogas using 40kg of rumen contents and 20 litres of tap water than producing biogas with 30kg of rumen contents and 30 litres of tap water or 20kg of rumen contents and 40 litres of tap water.Keywords: biogas, pH, rumen, temperature, wate

A matching scheme for aquaculture; a graphing calculator approach

Graphing Calculator Technology possesses a lot of capabilities in solving a variety of scientific and non-scientific problems. Its programming abilities make it very flexible to use. Unfortunately, it has been underutilised. In this paper, we develop an application with the graphing calculator to handle the processes in a Matching Scheme for Assigning Fish Types to Ponds. The application gives an inclusion matrix which is used as the basis of the matching and finally gives summary of the assignment..Journal of Science and Technology (Ghana) Vol. 27 (2) 2007: pp. 99-10

Trends in the prevalence of female genital muti-lation and its effect on delivery outcomes in the kassena-nankana district of northern Ghana

Rational: Female genital mutilation (FGM) is prevalent in northern Ghana, as the practice is seen as a passage rite to women adulthood and thus undertaken just before marriage. Objectives: We determined the changes in trend of FGM in deliveries at the Navrongo War Memo-rial hospital, and compared the outcomes and FGM status.Design: Retrospective extraction and analysis of delivery data at the hospital from 1st January 1996 to 31st December 2003. Results: Of the 5071 deliveries, about 29% (1466/5071) were associated with FGM. The high-est prevalence (95% CI) of 61.5% (50.9, 71.2) was in women aged 40 years and above, and the lowest of 14.4% (11.7, 17.0) was in women below 20 years. The all-age prevalence of FGM showed a significant decline (p-value for linear trend < 0.01) from 35.2% in 1996 to 21.1% in 2003. About 6% (89/1466) of mothers with FGM had stillbirths compared with about 3% (123/3605) of mothers without FGM. Again FGM was associated with 8.2% (120/1466) caesarean section rate compared with 6.7% (241/3605) in mothers without FGM. Mean birth weight and frequency of low birth weights were not significantly associated with FGM status. Conclusion: Although there is a high rate of FGM among mothers in the district and is associated with a higher proportion of stillbirths and caesar-ean sections, practice has shown a significant de-cline in the district in recent years due to the pre-vailing campaigns and intervention studies. There is therefore the need to sustain the ongoing inter-vention efforts

Women's autonomy in healthcare decision-making and healthcare seeking behaviour for childhood illness in Ghana: Analysis of data from the 2014 Ghana Demographic and Health Survey.

IntroductionThe capacity of women to decide on their healthcare plays a key role in their health. In this study, we examined the association between women's healthcare decision-making capacity and their healthcare seeking behaviour for childhood illnesses in Ghana.Materials and methodsWe used data from the 2014 Ghana Demographic and Health Survey. A total sample of 2,900 women with children less than 5 years was used for the analysis. Data were processed and analysed using STATA version 14.0. Chi-square test of independence and binary logistic regression were carried out to generate the results. Statistical significance was pegged at 95% confidence intervals (CIs). We relied on the 'Strengthening the Reporting of Observational Studies in Epidemiology' (STROBE) statement in writing the manuscript.ResultsOut of the 2,900 women, approximately 25.7% could take healthcare decisions alone and 89.7% sought healthcare for childhood illnesses. Women who decided alone on personal healthcare had 30% reduced odds of seeking healthcare for childhood illnesses compared to those who did not decide alone [AOR = 0.70, CI = 0.51-0.97]. With age, women aged 45-49 had 69% reduced odds of seeking healthcare for childhood illnesses compared to those aged 25-29 [AOR = 0.31, CI = 0.14-0.70]. Women from the Northern and Upper West regions had 72% [AOR: 0.28, CI: 0.11-0.70] and 77% [AOR: 0.23, CI: 0.09-0.58] reduced odds of seeking healthcare for childhood illnesses respectively, compared to those from the Western region.ConclusionGhanaian women with autonomy in healthcare decision-making, those who were older and those from the Northern and Upper West regions were less likely to seek healthcare for childhood illness. To reduce childhood mortalities and morbidities in Ghana, we recommend educating women such as those who take healthcare decisions alone, older women and women from deprived regions like the Northern and Upper West regions on the need to seek healthcare for childhood illnesses

Roasting effects on phenolic content and free-radical scavenging activities of pulp preconditioned and fermented cocoa (Theobroma cacao) beans

Polyphenols are phytochemicals responsible for the astringency, bitterness, green flavours and antioxidant activities in Theobroma cacao beans. Polyphenols degradation in cocoa beans during roasting is crucial to the flavour outcome and it is influenced by factors such as temperature, time and pod storage. Antioxidants are compounds that help to inhibit oxidation reactions caused by free radicals such as singlet oxygen, superoxide, peroxyl radicals, hydroxyl radicals and peroxynitrite thereby preventing damage to the cells and tissues. Their mechanisms of action include scavenging reactive oxygen and decreasing localised oxygen concentration thereby reducing molecular oxygen’s oxidation potential, metabolising lipid peroxides to non-radical products and chelating metal ions to prevent generation of free radicals in humans. The study aimed at investigating changes in total polyphenols, anthocyanins, o-diphenols and antioxidant activity (free-radical scavenging activities) after roasting of pulp preconditioned and fermented cocoa beans using standard analytical methods. A 4×4 full factorial design with the principal experimental factors as pod storage time (0, 3, 7 and 10 days) and roasting duration (0, 15, 30 and 45 minutes) at 120oC were used to study the changes in the total polyphenols, anthocyanins, o-diphenols and % free-radical scavenging activities of the cocoa beans. Variable decrease in total polyphenols, odiphenols and anthocyanins were observed with increase in pre-conditioning (pod storage time) and roasting duration. However, variable trends were observed for the % free-radical scavenging activities. The total polyphenols, anthocyanins and o-diphenols in the cocoa beans after 45 minutes roasting decreased in the range 132.24 to 57.17 mg/g, 6.71 to 1.07 mg/kg and 15.94 to 8.25 mg/g respectively at all pod storage treatments. The total polyphenols of the fermented, dried and unstored (freshly harvested) cocoa beans was 132.25 mg/g which reduced to 122.14 mg/g (7.6% degradation), 116.721 mg/g (11.7% degradation) and 92.22 mg/g (30.3% degradation) after storage for 3, 7 and 10 days, respectively. The optimum decrease in the % freeradical scavenging activity was 7 days and above of pods storage. Increasing roasting time caused a continuous decrease in the % free-radical scavenging activity from 89.10% to 74.31% after 45 minutes for beans from the unstored (freshly harvested) pods. However, pod storage caused an increase in the % free radical scavenging activities during roasting. Pulp pre-conditioning (pod storage) and roasting duration could be used to reduce the astringency and bitterness caused by polyphenols, o-diphenols and anthocyanins in cocoa beans as well as increase the antioxidant activity imparted by cocoa.Key words: Cocoa, pod storage, roasting, polyphenols

Dental Phobia and Its Impact on the Quality of Life of a Ghanaian Adult Population

Aim: Dental phobia is a significant cause of avoidance of dental treatment, which could result in poor oral health. This study sought to determine the prevalence of dental phobia among a Ghanaian adult population and how this affects their quality of life.&nbsp;Materials and Methods: The study was a cross-sectional survey conducted among 329 patients attending the University of Ghana Dental School Clinic. Dental phobia was assessed with the Kleinknecht\u27s Dental Fear Survey (DFS),and Quality of Life measured with the Oral Health Impact Profile (OHIP). Data were analyzed using Stata 14 software and MS Excel. Descriptive statistics and measures of association between DFS and OHIP were done.Results: About 46% of the study population had some level of dental phobia, with 8% having a high level of fear. More males (54.2%) were found to have experienced dental phobia than females (45.8%). Common causes of dental phobia were injection (54.7%), x-ray (24.9%), the dental clinic environment (13.4%), and the sound and feel of the handpiece (0.9%).Conclusion: Dental phobia was common among the dental clinic attendants. While further research is required in the subject area, clinicians and stakeholders should not under-estimate its prevalence and potential effects. &nbsp

What has women's reproductive health decision-making capacity and other factors got to do with pregnancy termination in sub-Saharan Africa? evidence from 27 cross-sectional surveys.

INTRODUCTION:Pregnancy termination is one of the key issues that require urgent attention in achieving the third Sustainable Development Goal (SDG) of ensuring healthy lives and promoting well-being for all at all ages. The reproductive health decision-making (RHDM) capacity of women plays a key role in their reproductive health outcomes, including pregnancy termination. Based on this premise, we examined RHDM capacity and pregnancy termination among women of reproductive age in sub-Saharan Africa (SSA). MATERIALS AND METHODS:We pooled data from the women's files of the most recent Demographic and Health Surveys (DHS) of 27 countries in SSA, which are part of the DHS programme. The total sample was 240,489 women aged 15 to 49. We calculated the overall prevalence of pregnancy termination in the 27 countries as well as the prevalence in each individual country. We also examined the association between RHDM capacity, socio-demographic characteristics and pregnancy termination. RHDM was generated from two variables: decision-making on sexual intercourse and decision-making on condom use. Binary logistic regression analysis was conducted and presented as Crude Odds Ratios (COR) and Adjusted Odds Ratios (AOR) with their corresponding 95% confidence intervals (CI). Statistical significance was declared p<0.05. RESULTS:The prevalence of pregnancy termination ranged from 7.5% in Benin to 39.5% in Gabon with an average of 16.5%. Women who were capable of taking reproductive health decisions had higher odds of terminating a pregnancy than those who were incapable (AOR = 1.20, 95% CI = 1.17-1.24). We also found that women aged 45-49 (AOR = 5.54, 95% CI = 5.11-6.01), women with primary level of education (AOR = 1.14, 95% CI = 1.20-1.17), those cohabiting (AOR = 1.08, 95% CI = 1.04-1.11), those in the richest wealth quintile (AOR = 1.06, 95% CI = 1.02-1.11) and women employed in the services sector (AOR = 1.35, 95% CI = 1.27-1.44) were more likely to terminate pregnancies. Relatedly, women who did not intend to use contraceptive (AOR = 1.47, 95% CI = 1.39-1.56), those who knew only folkloric contraceptive method (AOR = 1.25, 95% CI = 1.18-1.32), women who watched television almost every day (AOR = 1.16, 95% CI = 1.20-1.24) and those who listened to radio almost every day (AOR = 1.11, 95% CI = 1.04-1.18) had higher odds of terminating a pregnancy. However, women with four or more children had the lowest odds (AOR = 0.5, 95% CI = 0.54-0.60) of terminating a pregnancy. CONCLUSION:We found that women who are capable of taking reproductive health decisions are more likely to terminate pregnancies. Our findings also suggest that age, level of education, contraceptive use and intention, place of residence, and parity are associated with pregnancy termination. Our findings call for the implementation of policies or the strengthening of existing ones to empower women about RHDM capacity. Such empowerment could have a positive impact on their uptake of safe abortions. Achieving this will not only accelerate progress towards the achievement of maternal health-related SDGs but would also immensely reduce the number of women who die as a result of pregnancy termination in SSA

"Even if the test result is negative, they should be able to tell us what is wrong with us": a qualitative study of patient expectations of rapid diagnostic tests for malaria.

BACKGROUND: The debate on rapid diagnostic tests (RDTs) for malaria has begun to shift from whether RDTs should be used, to how and under what circumstances their use can be optimized. This has increased the need for a better understanding of the complexities surrounding the role of RDTs in appropriate treatment of fever. Studies have focused on clinician practices, but few have sought to understand patient perspectives, beyond notions of acceptability. METHODS: This qualitative study aimed to explore patient and caregiver perceptions and experiences of RDTs following a trial to assess the introduction of the tests into routine clinical care at four health facilities in one district in Ghana. Six focus group discussions and one in-depth interview were carried out with those who had received an RDT with a negative test result. RESULTS: Patients had high expectations of RDTs. They welcomed the tests as aiding clinical diagnoses and as tools that could communicate their problem better than they could, verbally. However, respondents also believed the tests could identify any cause of illness, beyond malaria. Experiences of patients suggested that RDTs were adopted into an existing system where patients are both physically and intellectually removed from diagnostic processes and where clinicians retain authority that supersedes tests and their results. In this situation, patients did not feel able to articulate a demand for test-driven diagnosis. CONCLUSIONS: Improvements in communication between the health worker and patient, particularly to explain the capabilities of the test and management of RDT negative cases, may both manage patient expectations and promote patient demand for test-driven diagnoses