How do your gardens grow? Unearthing meanings in African American church gardens

This research sought to discover the kinds of meanings that were attributed to two rural African American church gardens, which were created through a university-community educational outreach project. Using Lefebvre’s (1991) spatial triad, the study first acknowledged that community gardens, like the ones of the study, can be regarded as sites with multiple and often contested meanings. Then drawing on a phenomenological perspective, the purpose was to find the lived meanings of the gardens for the individuals at the churches. Data was collected through the use of mobile interviewing methods. The adults at the sites took part in walking interviews, and the children carried out garden-themed activity focus groups. All participants were given the use of a digital camera, and photography-elicitation occurred during this time. Garden notes, which recorded specific details and significant observations, were also kept. As the gardens were rich in sensory experiences, ranging from animal sightings to expressions of spiritual wonder, opportunities for different kinds of meaning to arise were rife. Data was analyzed using Vagle’s (2018) wholeparts-whole approach, and themes were also explored to see what the two church gardens had in common and how they differed. Three key findings emerged about the lived nature of these church gardens. The first theme examined the genius loci, or spirit, of each site. Each garden had its own unique personality in relation to the natural setting, the material structures, and the human needs of those at the churches. Next, two shared themes were also discovered. One was regarding the way in which different garden skill-sets had evolved differently across three generations. The other joint theme concerned issues of garden sustainability. Both churches had reached a turning point where they were seeking to define a clearer role for their gardens. Participants explained some of their concerns regarding people, plants, and structures and shared how possible solutions to sustain the gardens might come about. While many studies have been conducted inside African American churches, few have explored gardens at such settings. This study contributes to the literature around rurally situated African American church gardens

Effect of Solvent Extraction Parameters on the Recovery of Oil From Spent Coffee Grounds for Biofuel Production

Spent coffee grounds (SCG) are a potentially valuable source of lipids for sustainable production of biofuels. However, there are several feedstock properties and solvent extraction parameters that can impact on the oil yield and quality, potentially reducing the possible environmental benefits of deriving oils from this waste stream. This study presents results of laboratory and pilot plant scale experimental investigations into lipid recovery from spent coffee, determining the effects of solvent extraction variables including duration, SCG-to-solvent ratio and SCG residual moisture. SCG samples from both the industrial production of instant coffee and retail coffee shops were characterized in terms of moisture content, particle size distribution and oil content to identify the impact of these variables on the efficiency of lipid recovery by solvent extraction. The dry weight oil content of the instant SCG samples ranged from 24.2 to 30.4% w/w, while the retail SCG samples contained considerably lower amounts of lipids with their oil content ranging between 13.4 and 14.8% w/w. The highest oil yields were found at an extraction duration of 8 h, while a moisture content of ~2% w/w led to increased yields relative to completely dry samples. A pattern of increasing acidity with decreasing extraction duration was observed, suggesting preferential extraction of free fatty acids (FFA), with the fatty acid (FA) profile of the oil found to be similar to lipids commonly utilized for biofuel production

Motivation and Performance of Librarians in Public Universities in Ghana

Motivation is of enormous importance with regard to enhancing performance in any organisation. This paper discusses motivation and performance of librarians in public universities in Ghana. The study examined motivation of librarians, the effect of motivation on performance, the views of librarians on motivation, the level of satisfaction of librarians and the effort the public university managements are making to motivate librarians. Through literature review, the concept of motivation and its effects on performance were discussed. Using a survey method, questionnaire were designed and distributed to seventy-two targeted librarians in six public universities in Ghana, out of this, sixty returned the duly completed questionnaire. The questionnaire sought to identify intrinsic and extrinsic factors which motivate librarians and how it affects their performance. The study revealed that the motivational level of librarians in public universities in Ghana is high and that the motivational level affects majority of librarians positively. The public university managements have made some efforts to motivate librarians but they need to do more to improve the current situation. The study concludes with some recommendations on how to improve motivational systems in place in public university libraries. The discussions in the paper provides some insights into intrinsic and extrinsic factors that motivate librarians in public universities in Ghana. The paper will therefore be of great value to managers in the public university libraries in Ghana and other developing countries in getting the best out of their staff if adequately motivated

Motivation and Performance of Librarians in Public Universities in Ghana

Motivation is of enormous importance with regard to enhancing performance in any organisation. This paper discusses motivation and performance of librarians in public universities in Ghana. The study examined motivation of librarians, the effect of motivation on performance, the views of librarians on motivation, the level of satisfaction of librarians and the effort the public university managements are making to motivate librarians. Through literature review, the concept of motivation and its effects on performance were discussed. Using a survey method, questionnaire were designed and distributed to seventy-two targeted librarians in six public universities in Ghana, out of this, sixty returned the duly completed questionnaire. The questionnaire sought to identify intrinsic and extrinsic factors which motivate librarians and how it affects their performance. The study revealed that the motivational level of librarians in public universities in Ghana is high and that the motivational level affects majority of librarians positively. The public university managements have made some efforts to motivate librarians but they need to do more to improve the current situation. The study concludes with some recommendations on how to improve motivational systems in place in public university libraries. The discussions in the paper provides some insights into intrinsic and extrinsic factors that motivate librarians in public universities in Ghana. The paper will therefore be of great value to managers in the public university libraries in Ghana and other developing countries in getting the best out of their staff if adequately motivated

An explorative study on the adoption and dis-adoption of improved rice varieties among farmers in the Northern region of Ghana

Rice consumption in Ghana has increased steadily over the years. To enhance rice productivity to meet demand, several high-performing rice varieties have been disseminated via numerous interventions to smallholders in Northern Ghana. Nevertheless, productivity is still low at farm gate compared to research stations, due to smallholder poor adoption of the varieties. Using primary data collected from 404 farmers, the study examines the adoption levels of the main rice varieties among farmers and investigates the reasons for their adoption and dis-adoption. The empirical results revealed that rice varieties namely, Agra, Sakai, Jasmine 85, and Afife were the most adopted in the study area. Also, the study finds that GR-18, Nerica, Digang, Tox, Mandee, and Faro-15 were the most dis-adopted rice varieties. The main reasons for which farmers adopted the improved rice varieties were availability of a ready market for the produce, crop resistance to pests and diseases, consumer higher demand for rice, advice by extension staff to cultivate, and encouragement from researchers to adopt. The reasons for the dis-adoption of improved rice varieties in the study area were high input requirements, lack of ready market for the varieties, and unfavorable climatic conditions. The findings of the study give direction as to the angle from which the adoption of improved rice varieties can be stepped up while dis-adoption is reduced. Research scientists should research into rice varieties that are more suitable for the soil and climatic conditions of the study area and continue to sensitize and motivate the farmers to adopt them, while government should step up its support for the research scientists as well as the extension officers to deliver on their mandate

Transesterification of high-acidity spent coffee ground oil and subsequent combustion and emissions characteristics in a compression-ignition engine

Lipids extracted from spent coffee grounds (SCG) are a potentially promising feedstock for biodiesel production if the relatively high free fatty acid (FFA) portion of the oil can be successfully converted into methyl esters, and the resulting biodiesel found to have acceptable combustion and emissions performance. This study presents experimental results obtained from transesterification of SCG-extracted oil with a FFA content of ∼30% w/w through a two-step process, followed by fuel characterization and combustion experiments with SCG-derived biodiesel, pure and blended with fossil diesel, and untreated SCG oil in a single cylinder research compression-ignition engine. The acid-catalyzed pretreatment reduced the FFA content of the oil below 1.5% w/w, with minor losses, and showed the methanol-to-FFA molar ratio to be more significant relative to the quantity of sulphuric acid used as a catalyst within the range of investigated conditions, while the subsequent base-catalyzed step converted ∼87% of the pretreated oil into biodiesel with a higher heating value (HHV) of 39.7 MJ/kg. The combustion and emission characteristics of pure and blended SCG biodiesel revealed similarities with those of commercial rapeseed and soya biodiesel samples tested. While ignition delay decreased with increasing SCG biodiesel content, the comparatively higher CO, total hydrocarbon (THC) and particulate emissions of the SCG biodiesel were attributed to higher fuel kinematic viscosity (KV). Combustion of the untreated SCG oil produced low in-cylinder peak pressure and peak heat release relative to other samples tested despite a longer ignition delay, suggesting that the oil physical properties were more important in determining combustion performance

Influence of solvent selection and extraction temperature on yield and composition of lipids extracted from spent coffee grounds

Spent coffee grounds (SCG) are a potentially sustainable source of C16-C18 triglycerides. This study investigates known solvent extraction technologies with a wide range of solvents for lipid extraction from SCGs, and determines the effect of solvent selection and process temperature on the extraction efficiency and composition of the obtained oil. A correlation between increasing solvent boiling point, and therefore process temperature, and improved oil extraction efficiency was observed in Soxhlet extractions with a wide range of solvents. Experiments at elevated temperatures (up to 200 °C) were performed through Accelerated Solvent Extraction (ASE) and temperature increase initially improved the oil extraction efficiency when non-polar solvents were used, before decreasing it at higher temperatures. Utilization of ethanol resulted in the highest oil extraction ratio by ASE (at 165 °C), suggesting that temperature increase is more beneficial to the extraction efficiency of polar solvents. In addition, analysis of the oils was carried out to evaluate the composition of the oils extracted from SCGs using different solvents and extraction parameters. The Nuclear Magnetic Resonance (NMR) results were in agreement with the values obtained from the titrimetric determination of the free fatty acid content (FFA) of the oils in terms of the comparative trends, and also tentatively suggest that some differences in the composition of the extracted oils might be related to the type of extraction solvent used

Exploring experiences and impact of the COVID-19 pandemic on young racially minoritised people in the United Kingdom: A Qualitative Study

Within high-income-countries, the COVID-19 pandemic has disproportionately impacted people from racially minoritised backgrounds. There has been significant research interrogating the disparate impact of the virus, and recently, interest in the long-term implications of the global crisis on young people’s mental health and wellbeing. However, less work explores the experiences of young people from racialised backgrounds as they navigate the pandemic, and the specific consequences this has for their mental health. Forty young people (age 16-25) from black, mixed and other minority backgrounds and living in London, participated in consecutive focus group discussions over a two-month period, to explore the impact of the pandemic on their lives and emotional wellbeing. Thematic analysis identified seven categories describing the impact of the pandemic, indicating: deepening of existing socioeconomic and emotional challenges; efforts to navigate racism and difference within the response; and survival strategies drawing on communal and individual resources. Young people also articulated visions for a future public health response which addressed gaps in current strategies. Findings point to the need to contextualise public health responses to the pandemic in line with the lived experiences of racialised young people. We specifically note the importance of long-term culturally and socio-politically relevant support interventions. Implications for policy and practice are discusse

Factors Affecting the Efficiency of Pressurized Solvent Extraction of Oil from Spent Coffee Grounds

Spent coffee grounds (SCG) are the main residues of the coffee beverage industry, and a potentially valuable source of energy-dense lipids. The present study investigates the effect of temperature, pressure and duration on the pressurized solvent extraction of lipids from dried SCG to evaluate their impact on oil extraction efficiency, composition and energy content. Solvent extraction trials at elevated temperatures performed by an Accelerated solvent extraction (ASE) unit revealed a beneficial effect of increased temperature on the crude lipid extracting efficiency of polar ethanol. Nuclear magnetic resonance (NMR) analysis showed that extraction temperature had a significant impact on the proportions of the ASE-extracted SCG oil constituents, with increasing temperature leading to lower concentration of triglycerides and higher levels of 1,2- and 1,3-diglycerides. Experiments performed in a closed pressurized vessel allowed individual selection of pressure and temperature and showed that pressure had a significant impact on oil extracting efficiency that largely depended on process temperature. There was no systematic effect of extraction temperature and pressure on the higher heating value (HHV) of SCG lipid samples, which ranged between 38.53 MJ/kg and 39.12 MJ/kg, while extraction pressure was found to have negligible effect on the free fatty acid (FFA) content of lipids extracted by pressure vessel experiments. Prolongation of pressurized extraction duration above 10 minutes was found to be counterproductive in terms of oil recovery, and consecutive short extraction static cycles with fresh solvent removed higher amounts of SCG oil relative to a single longer cycle

Assessing arthropod pests and disease occurrence in cassava (Manihot esculenta Crantz) and cowpea (Vigna unguiculata L. Walp) intercropping system in the Ashanti Region, Ghana

On-station trials were conducted at CSIR-Crops Research Institute’s research farms at Kwadaso and Ejura, Ashanti Region, Ghana, during 2010/2011 cropping season, to assess the pests and disease occurrence in cassava-cowpea intercrop farming systems and their effect on yield of produce. Three improved cassava varieties and a local variety were intercropped with an improved cowpea variety, and cowpea only constituted the treatments. Abundance of Bemisia tabaci was comparable between sole cassava and cassava-cowpea intercrop, but was significantly less on the sole cowpea. The incidence and severity of cassava mosaic disease was higher on the local variety than on the improved varieties. Root yield of cassava did not differ between sole and intercropped cassava with cowpea. However, Kwadaso had higher root yield than Ejura. Dry grain yield of cowpea was similar at Kwadaso and Ejura for both sole and intercrop scenarios. This baseline information will be useful on disease and pests incidence in sole crop and cassava-cowpea intercropping system