Aims: This study examined the impact of early child care and development (ECCD) education on psychomotor, affective and cognitive domains of learning in elementary school students. Study Design: This descriptive study employed qualitative and quantitative methods. Place and Duration of Study: The study was conducted in five schools under Chukha Dzongkhag for a period of one year (2019-2020). Sample: This study involved a survey of teachers and observation of students in 5 schools of Chhukha district. Seventy three teachers were selected to fill out the questionnaire using homogenous sampling technique and 6 students were selected as participants for observation using simple random sampling technique. Methodology: Quantitative data were gathered through questionnaires, and documents and artifacts while qualitative data were gathered through observation for this descriptive study. The data collected from questionnaire, document and artifact and observation were triangulated to facilitate validation of data through cross verification and strengthen the findings of the study. Results: The results indicated positive impact of ECCD on elementary school students’ academic performance. In particular, the analysis revealed that ECCD education has the highest level of impact on students’ psychomotor performance, followed by affective and cognitive performance. Conclusion: In view of these findings, the researchers recommend the ECCD education programme developers and instructors to look for a balanced curriculum that ensure equal development of cognitive, affective, and psychomotor domains of learning.
Renewable energy is not only environmental friendly but also promotes sustainable development. Biogas being one of the abundantly used renewable resource, the enhancement and optimization of the yield of biogas can help in reduction of dependence on imported fuel. Biochemical methane potential (BMP) assessment of grass will determine the production of methane (CH4) from this substrate through the process of anaerobic digestion. After determining the parameters such as pH, Biochemical Oxygen Demand (BOD) and Total solids (TS) of three types of local grasses known as Basil, Bermuda and Napier, that affects the production of biogas, Napier grass resulted with the highest potential to produce CH4 gas. Batch and continuous reactor method under mesophilic condition was adopted. The composition of biogas from continuous reactor was obtained using a biogas analyzer (Biogas 5000 Geotech), from which 30.8% of CH4, 8% of CO2 and other inert gases were found. Also, methane to carbon dioxide (CH4: CO2) ratio of 3.81: 1 approximately (80% - 20%) was achieved. Moreover, the batch reactor method showed that 1L Napier grass silage would yield 0.81L of biogas. The concentration of CH4 gas from Napier grass in hydraulic retention time as short as 20 days was very significant. This study shows that Napier grass can be used as an alternative sustainable source of energy in the country which can improve resource constraints.
Conversion of Solid waste into energy is the most resourceful process to combat landfill saturation and environmental impression. Bhutan, with an exponential rise in the waste production, Waste to Energy (WTE) conversion is an alternative solution for municipal solid waste management (MSW). The study for MSW composition and its energy potential analysis for Memelakha (Thimphu) and Pekarshing (Phuntsholing) landfills was done to resolve the waste management challenges in the country. The standard number of samples from two dumpsites were used to analyze for the waste characterization (waste composition, proximate analysis, chemical analysis) and high heating value (HHV) of MSW. MSW of two landfills showed that the main elemental constituents were Carbon and Oxygen with 17.26% and 9.97% by mass respectively for Pekarshing and 16.52% (Carbon) and 11.07% (Oxygen) by mass for Memelakha landfill. Based on the physio-chemical analysis of MSW, the average calorific HHV of MSW obtained were 10.028 MJ/kg (26.04% of coal energy) for Pekarshing dumpsite and 9.6 MJ/kg (24.94% of coal energy) for Memelakha. The analysis showed that by the year 2050 Memelakha landfill has the potential to generate the power of 8.85 Megawatt (MW) and 1.44 Megawatt (MW) for Pekarshing. For (WTE) conversion, incineration, pyrolysis, and gasification technologies are found suitable based on the current composition MSW of Bhutan. Furthermore, in terms of energy efficiency and percentage of wastage, the gasification process was the most feasible method for WTE conversion at two locations with a waste volume reduction of 80 to 90 percent at the landfill.
With rapid urbanization and industrialization, Bhutan is developing at a fast pace due to which solid waste generation is increasing day by day and hence its management has become a great issue. One of the management issues that are faced in the management of landfills is the generation of toxic soup from landfills known as leachate which is one of the causes of water and soil pollution. The landfills in Bhutan lack a proper leachate management system and those that have leachate collection tanks are very uneconomical due to unreliable methods being used to determine the leachate generated amount. Leachate generation from municipal solid waste (MSW) landfills by various methods such as Standard, Rational, and Mass balance methods was determined, analyzed the results and ultimately developed a reliable method for determining the amount of leachate generated by a landfill known as “Fusion method”. The quantified leachate volume from the study area was 4565.98 m3 with the annual precipitation amount being 15156.09 m3 with the developed (fusion) method. Validation of the model was performed on data from Deir Al Balah landfill, Gaza strip, Palestine. The validated amount of leachate generation is about 123,833.08 m3 by the fusion method, while the actual amount of leachate generated was about 114,351 m3 from which the percentage difference between the fusion method and the actual amount of leachate generated was found to be only 8.29%, compared to other methods with % error ranged from 10-55 %.
Researchers, policymakers, and governments are increasingly interested in assessing the ecological health (EH) of lakes and streams. The EH of a lake can be expressed in terms of water quality, trophic state and biodiversity of riparian vegetation, macroinvertebrates and fishes. The ecological health index (EHI) of Renuka lake, Himachal Pradesh of India, was analyzed based on National Sanitation Foundation Water Quality Index (NSFWQI), Carlson’s Trophic State Index (TSI), Simpson Diversity Index (SDI), and Shannon-Weiner index (SWI). The results of NSFWQI and CTSI are found in the range of 40-59 and 49.9-58.9 respectively indicating that the water quality was poor to medium and not suitable for drinking purposes but can be used for secondary purposes such as agriculture, industry, and recreation etc. The trophic state of the lake is similarly in the eutrophic range, with an overall EHI of 1.81-2.47, indicating poor to medium trophic status. Apart from analyzed results, the EH category from mesotrophic to a eutrophic state of the lake is caused due to the cultural siltation/nutrient loading, religious practices, land tenurial issues, and uncontrolled tourist pressure followed by recreational activities on water bodies and lake vicinity. Accordingly, suitable restoration methods such as source control, desilting/dredging, and lake aquatic plantation are suggested to recover the ecological health of the lake back to a mesotrophic or oligotrophic state.
City sanitation plans are strategic planning processes for city wise sanitation sector development. Exponential increase in population and rapid economic development led to an increase in generation of municipal solid waste (MSW) which impacts the sanitation of a city. Also, emission of toxic gases from MSW dumpsites are the main threat to the environment and public health. In the present study, data regarding solid waste management has been collected and studied the current scenario of the municipal solid waste system of Gorakhpur city, Uttar Pradesh, India. MSW composition, physical and chemical analysis has been performed and Methane gases (CH4) generated from MSW of the city is quantified using LandGEM 3.02. Waste composition shows that city generates paper (6.33%), organic matter (56.1%), wood (1.36%), textile (3.73%), plastic (1.11%), Rubber (0.56%), glass (1.6%) and inert material (29.17%). With the same rate of MSW generation, CH4 emission will amount to 6.6X103 Mg/yr, 1.9x104 Mg/yr of CO2 and 4.33x101 Non methanic organic carbon (NMOC) by 2050. MSW analysis resulted in high moisture content of 35 -40% and organic matter of 56.1%. Based on the physio chemical analysis, suitable waste to energy option that could be adopted are biogas generation and vermi composting from the biodegradable component of MSW. Rest 36% of non-biodegradable part of MSW could be converted to Reduced Derived Fuel (RDF).
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