Browsing Research Articles [MEWES] by Title
Now showing items 207-226 of 476
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Impact of Antioxidant Additives on the Engine Performance and Exhaust Emissions Using Biodiesel made from Jatropha Oil of Eastern Africa Origin
(Journal of the South African Institution of Mechanical Engineering, 2016)Biodiesel’s chemical nature makes it more susceptible to oxidation in comparison to mineral diesel. Biodiesels are doped with antioxidants to increase oxidation stability for long term storage. However, it is quite ... -
Impact of antioxidant additives on the oxidation stability of biodiesel produced from Croton Megalocarpus oil
(Elsevier Ltd., 2011-06)The increase in crude petroleum prices, limited resources of fossil fuels and environmental concerns have led to the search of alternative fuels, which promise a harmonious correlation with sustainable development, energy ... -
Impact of climate change on groundwater recharge in the lake Manyara catchment, Tanzania
(Elsevier, 2021-12-15)Groundwater account for about 60 to 80% of water supply to the population of Tanzania's semi-arid regions for domestic and agriculture uses. Despite the importance of groundwater resource in semi-arid areas, limited ... -
Impacts of Emerging Agricultural Practices on Groundwater Quality in Kahe Catchment, Tanzania
(MDPI, 2019)This paper assesses the impacts of farmers’ intensive use of agrochemicals (fertilizers and pesticides) on groundwater quality in the Kahe catchment. Samples were collected during the wet and dry seasons of the year 2018 ... -
Impacts of Synthetic and Botanical Pesticides on Beneficial Insects
(Scientific Research Publishing, 2016-06-17)Sustainable methods to control insect pests that affect crop yield have become a great challenge to mainly smallholder farmers. Beneficial insects in agricultural fields play an important role in natural pest control and ... -
Impacts of Wood Fuel Uses on Forest Cover: The Case of Semiarid Areas in Northern Tanzania
(University of Dar es Salaam, 2021)Satellite images for the years 1987, 1997, 2002 and 2017, and questionnaire surveys were used to assess energy sources and demands as well as the impacts of wood fuel use to forest cover changes in Meru and Mwanga ... -
Improving biological treatment of textile wastewater
(IWA Publishing, 2022-01-01)Textile industries are among the primary contributors of water pollution. Treatment of textile wastewater is very important before discharging it to the environment. In the present study, laboratory-scale anaerobic batch ... -
In situ facile green synthesis of Ag–ZnO nanocomposites using Tetradenia riperia leaf extract and its antimicrobial efficacy on water disinfection
(Springer Nature Limited, 2022-09-13)In this work, Ag–ZnO nanocomposites were prepared by a green synthesis route using aqueous leaf extract of Tetradenia riperia and investigated for antibacterial activity against Escherichia coli and Staphylococcus aureus. ... -
In-situ synthesis of calcium/magnesium phosphate system for water de-fluoridation: Clay ceramic materials
(Elsevier, 2022-02-15)Clay ceramic water filters impregnated with silver colloids have been used to purify water in many parts of East Africa disregarding the removal of fluoride, which is a health-threatening ion in water supplies. This paper ... -
Indigenous knowledge on development and management of shallow dug wells of Dodoma Municipality in Tanzania
(Springer Nature Switzerland AG., 2018-04-19)Dodoma city, central Tanzania, seats in a semi-arid region of East Africa with limited rains and surface water resources. Consequently, the area largely depends on shallow and deep aquifers for its freshwater needs. Owing ... -
Industrial -Based GSM Water Leakage Detection, Monitoring and Controlling System in Promoting Sustainability: A Case of Kenyan Industries
(Transdisciplinary Journal of Engineering & Science, 2024-05-03)The current system for detecting and monitoring water leaks is manual and costly. Despite emerging new technological trends, many industries lack automated systems to detect, monitor, and control ... -
Influence of aging conditions on textural properties of water-glass-based silica aerogels prepared at ambient pressure
(Springer US, 2010-06-04)The experimental results of aging time and temperature on the textural properties of water-glass (sodium silicate)-based silica aerogels are reported and discussed. Aging of the hydrogel for different times and temperatures led ... -
Influence of farmers’ socio-economic characteristics on nutrient flow and implications for system sustainability in smallholdings: a review
(Frontiers in Soil Science, 2023-04-14)The rise in global human population, coupled with the effects of climate change, has increased the demand for arable land. Soil fertility has been the most affected, among other things. Many approaches to soil fertility ... -
The Influence of Fertilizers on the Behavior of Fluoride Fractions in the Alkaline Soil
(Elsevier, 2021-08-23)It has been established that fluoride bioavailability in the soil is defined by the form which it exists rather than the amount of total fluoride. In the soil, fluoride exist in different fractions such as water soluble ... -
The influence of gold mining on radioactivity of mining sites soil in Tanzania
(International Journal of Environmental Quality, 2022-02-17)The activity of 226Ra, 232Th and 40K in soil samples were measured by gamma spectrometry using high purity germanium detector. The study involved 40 samples from four divisions: 10 samples each were drawn from the control ... -
Influence of land use change on nitrate sources and pollutant enrichment in surface and groundwater of a growing urban area in Tanzania
(Springer Nature Switzerland AG., 2021-01-31)In the present study, 3-year (1997, 2008 and 2017) satellite images as well as different hydro-chemical parameters, nitrogen and oxygen isotopic composition of nitrate were used to examine the impacts of land use and land ... -
Influence of Macrophyte Types towards Agrochemical Phytoremediation in a Tropical Environment
(International Journal of Engineering Research and General Science, 2014-09)The presence of agrochemicals waste water from agricultural fields poses major environmental and human health problems which may be solved by phytoremediation technologies. Phytoremediation is the use of plants to remediate ... -
Influence of metal contaminants and antioxidant additives on storage stability of biodiesel produced from non-edible oils of Eastern Africa origin (Croton megalocarpus and Moringa oleifera oils)
(Elsevier Ltd., 2015-10-15)The effect of metal contents and antioxidant additives on the storage stability of biodiesel produced from less common non-edible oils of Eastern Africa origin (Croton megalocarpus and Moringa oleifera) were evaluated and ... -
Influence of phosphate fertilizers on the radioactivity of agricultural soils and tobacco plants in Kenya, Tanzania, and Uganda
(Springer Berlin Heidelberg, 2023-06-20)Three brands of NPK fertilizers that contain variable concentrations of natural radioactivity are commonly used in tobacco plantations in Kenya, Tanzania, and Uganda. Tobacco plants are known for hyper-accumulation of ... -
The influence of physical-chemical variables on the spatial and seasonal variation of Chlorophyll-a in coastal waters of Unguja, Zanzibar, Tanzania
(African Journals Online, 2018-12-11)Chlorophyll-a (Chl-a) concentrations were measured at four sites around Unguja, Zanzibar during the northeast (NE) and southeast (SE) monsoon seasons. Data for Chl-a, nitrate, phosphate, ammonia, dissolved ...
