167 research outputs found

    Gift economy and well-being: A mode of economy playing out in recovery from Rwandan tragedies

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    Previous studies challenge the assumption that economic growth improves subjective well-being, and argue that economic growth is incompatible with not only nature conservation but also subjective well-being. To achieve SDGs, a mode of economy that sustains both subjective well-being and the natural environment needs to be investigated. This ethnographic study explored community-based economy systems in post-genocide Rwanda, and elaborated the process and mechanisms by which the contemporary gift economy facilitated subjective well-being in culture and natural landscape. Findings showed that subjective well-being can be achieved by applying alternative modes of economy (gift economy, sharing economy) and having access to direct sources of well-being (natural environment, social cohesion, cultural identity, and spirituality), when basic needs are satisfied by well-established infrastructure and social services. This study contributes to understanding why and how people can be happy without money, and illuminate a mode of economy that can benefit the sustainable development of local communities

    Improving mathematical communication and critical thinking in middle school students: Study of anchored instruction learning assisted by edpuzzle

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    Background: Mathematics learning often appears unattractive to students due to its monotonous, intimidating, and boring nature. Active engagement in learning mathematics requires students to effectively utilize their communication and critical thinking skills.Aim: This study aims to 1) analyze the critical thinking abilities of students in a learning context, 2) assess their written and oral mathematical communication abilities, 3) evaluate their critical thinking skills in problem-solving, and 4) explore the impact of the Anchored Instruction learning setting assisted by Edpuzzle on these competencies.Method: Employing a descriptive qualitative research design, this study involved 24 VII-H grade students from SMPN 8 Malang. Data were collected using observation sheets, worksheets, and test questions.Results: The study indicates significant improvements in students’ critical thinking and mathematical communication skills. Critical thinking, observed through increased and more sophisticated student participation, was categorized as high in 5 students, medium in 16, and low in 3. Similarly, in mathematical communication, 5 students excelled, 13 were above average, and 6 were below average. This progression exhibited the effectiveness of the Anchored Instruction learning setting assisted by Edpuzzle in enhancing these skills.Conclusion: The study concludes that the Anchored Instruction learning setting, supported by Edpuzzle, significantly enhances students' critical thinking and mathematical communication abilities. This approach has proven effective in engaging students more actively in the learning process and improving their problem-solving skills

    Relationship among the carotenoid content, dry matter content and sensory attributes of sweet potato

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    The sensory characteristics of biofortified sweet potato in Africa were explored over a wide range of carotenoid (0.4–72.5 μg/g fresh weight) and dry matter contents (26.8–39.4%). The logarithm of the total carotenoid content was correlated with the dry matter content (declining by 1.2% with each doubling of the carotenoid content) and a wide range of sensory characteristics that involve visual, odour, taste and textural characteristics. Multiple linear regression models were developed. The logarithmic relationship of colour to the carotenoid concentration means that those varieties with a relatively low carotenoid content may appear to be of similar intensity to those with a much higher and hence nutritionally beneficial carotenoid content

    Assessment of aflatoxin and fumonisin contamination levels in maize and mycotoxins awareness and risk factors in Rwanda

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    Mycotoxins are secondary metabolites of fungi that are toxic to humans and animals when consumed in contaminated food and feed. The Rwandan climate conditions like steady temperature and sufficient rainfall favor the growth of fungi leading to high probability of mycotoxins contamination. Mycotoxins get into maize throughout the value chain from the field to processed products. Maize is  promoted in Rwanda under the Crop Intensification Program (CIP), for nutrition and food security. The aim of the study was to evaluate mycotoxins (Aflatoxin and fumonisin) levels in maize and assess awareness and factors associated with mycotoxin contamination in Rwanda. Maize samples (227 kg) from season B 2019 were collected in 15 Districts in five provinces of Rwanda after an interview with a representative of the household or cooperative using a structured questionnaire. The samples were analyzed for aflatoxin and  fumonisin using Reveal Q+ and AccuScan Gold Reader. From the interview, most of the respondents were not aware about aflatoxin (59.7 %) and 99 % did not know the effect of mycotoxins on human health. The average of aflatoxin contamination in surveyed districts was 6.69±13 μg/kg. In general, 90.4 % of samples scored below the limit of aflatoxin level regulated in East Africa/Kenya regulation standards (10 μg/kg). The levels of aflatoxin ranged between 0 and 100.9 μg/kg. The means aflatoxin levels within districts ranged between 1.36±0.5 μg/kg and 13.75±25 μg/kg. Among 9.6 % of the samples containing aflatoxins above the EU and Kenyan regulations standard limit, 5.7 % were above the US standards of 20 μg/kg. Within clusters, the level of aflatoxin more than 10 μg/kg was 5 %, 7 % and 18 % for stores, household and market samples, respectively. From the study, as mechanical damage of grains, moisture content of grains and the temperature of the store house increased, Aflatoxin level also increased. Fumonisin analyzed in maize ranged from 0 to 2.3 μg/g and only one sample from market showed a slightly higher level of fumonisin than the EU and US limit of 2 μg/g. More effort for aflatoxin mitigation is needed at the market level. Farmers need to be aware and taught how they can improve their agricultural system and more knowledge on mycotoxin control is needed. The results point to appropriate measures to recommend for control ofmycotoxins in Rwanda and awareness creation. Key words: AccuScan, Aflatoxin, Fumonisin, Fungal, Maize, Mycotoxins, Reveal Q+, Rwand

    A survey of root knot nematodes and resistance to Meloidogyne incognita in sweet potato varieties from Kenyan fields

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    AbstractThe root knot nematode, Meloidogyne is one of the most economically damaging plant parasitic nematode groups, and are widely distributed in Kenyan agro-ecosystems. The aim of this study was to determine the diversity of Meloidogyne species in Kenyan sweet potato fields and identify sweet potato varieties that exhibit resistance to M. incognita. Meloidogyne species were collected from Nyanza, Western, Eastern and Central Provinces of Kenya. Mitochondrial DNA was used to differentiate Meloidogyne species. The most common species in all sampled regions was M. incognita. Meloidogyne hapla was recorded for the first time in Kenyan sweet potato growing areas (Mosocho, Matayos, Teso South, Manyatta, and Nzaui sub-counties), while M. enterolobii was observed in Kiharu, Matayos and Mosocho sub-counties and a novel Meloidogyne sp. was identified in Kiharu sub-county. Seventy-two sweet potato varieties collected from both agricultural fields and research stations in Kenya were evaluated for resistance to M. incognita under greenhouse conditions in two separate trials. Known susceptible (Beauregard) and resistant (Tanzania) sweet potato varieties were included as controls. Responses of sweet potato varieties to M. incognita infection was assessed by the number of eggs present and level of galling on a scale of 1–5, where 0 = 0 galls and 5 ≥ 100 galls. The reproduction index (RI) was used to classify the varieties as resistant or susceptible. There was a significant difference (P < 0.001) in the number of eggs, GI and RI among the varieties tested. Forty nine sweet potato varieties were considered very resistant and may be used in breeding programs to incorporate resistance against M. incognita into commercial cultivars of sweet potato or to use them in crop rotation programmes for management of RKN. The results on Meloidogyne species diversity in Kenyan sweet potato fields will also be useful in nematode management programs
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