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Urbanization And Urban Sprawl In The Post-Colonial Era Douala City, Cameroon, Sylvia Munisi
Urbanization And Urban Sprawl In The Post-Colonial Era Douala City, Cameroon, Sylvia Munisi
Tanzania Journal of Engineering and Technology (TJET)
The history of the port city of Douala spans pre-colonial period, colonial period of the Germans and French occupation, the post-colonial era and the contemporary situation with continuous occupancy of the coastal environment. This article looks at the relationship between the history of the city of Douala to the resulting urban situation focusing on governance structure as well as rapid urbanization. The findings show that governance structure allowing for a duality of modern political system and traditional cultural system of kingships and chiefdoms has an effect to the resulting urban sprawl. Moreover, rapid urbanization under this condition has an overall …
The Use Of Locally Available Materials Towards Urban Planning For Sustainable Construction: The Case Of Gondar-Ethiopia, Kidist Dereje
The Use Of Locally Available Materials Towards Urban Planning For Sustainable Construction: The Case Of Gondar-Ethiopia, Kidist Dereje
Tanzania Journal of Engineering and Technology (TJET)
The city of Gondar in northern Ethiopia has a rich history that is connected to urban planning and construction. From the era of the Fasiledes that built masonry castles, Italian colonialism that zoned the city on racial boundaries and the post-colonial planning that wanted a more global standard, Gondar has been subjected to different planning and construction methods. This evolution however, has brought about challenges related to the sustainability of the construction industry and the communities within the city. This paper analyses the relationship between urban planning and use of local construction materials to attain sustainable development of the city. …
Transport Mobility Analysis For Informal Settlements In Dar Es Salaam, Tanzania, Fatma Kassim Mohamed
Transport Mobility Analysis For Informal Settlements In Dar Es Salaam, Tanzania, Fatma Kassim Mohamed
Tanzania Journal of Engineering and Technology (TJET)
Dar es Salaam is one of the world’s fastest growing cities and is expected to be the third largest by 2100 with a population of 76 million. Dar es Salaam city is made of multiple neighbourhoods that are very diverse in terms of socio-economic status, gender, age and prevalent activities. One of the biggest challenges facing the city of Dar es Salaam is urban sprawl due to informal settlements that in turn leads to very long travel time and hinders equal mobility and accessibility of labour and goods. This study found that the current mobility vision for Dar es Salaam …
Investigating The Relationship Between History, Urbanization And Wealth Gap In Johannesburg, South Africa, Abdallah F. Kaamah
Investigating The Relationship Between History, Urbanization And Wealth Gap In Johannesburg, South Africa, Abdallah F. Kaamah
Tanzania Journal of Engineering and Technology (TJET)
The city of Johannesburg is the largest city in South Africa and named as one of the economic drivers of the country. However, the city has the widest wealth gap in the country. This article examines the relationship between historical occurrences, urbanization, and the resulted wealth disparity in Johannesburg and look at the mitigation measures. The findings point to the wealth disparity in the city as a multifaceted problem influenced by historical, urbanization, and political variables. Comprehensive and multifaceted policy initiatives are required to address the structural causes of inequality and the urgent needs of vulnerable populations to close the …
Antibacterial Activity And Phylogeny Of Griseofulvin Producing Aspergillus And Penicillium Species From Kunduchi Mangrove Sediments, Tanzania, Blandina A. Mavoa, Shaaban A. A. Kassuwi, Juma M. Hussein
Antibacterial Activity And Phylogeny Of Griseofulvin Producing Aspergillus And Penicillium Species From Kunduchi Mangrove Sediments, Tanzania, Blandina A. Mavoa, Shaaban A. A. Kassuwi, Juma M. Hussein
Tanzania Journal of Science
Marine fungi are an underrated reservoir of bioactive metabolites for drug discovery. This study focused on fungi isolated from Kunduchi mangrove sediments in Tanzania. In an attempt to investigate the antibacterial activities of marine fungi and uncover their bioactive compounds, ethyl acetate crude extracts of fungal isolates were screened for antibacterial activity against human pathogens (Bacillus subtilis, Staphylococcus aureus and Escherichia coli) followed by compounds identification by Gas Chromatography-Mass Spectrometry (GC/MS). A total of seven fungal isolates were obtained from sediments. Crude extracts from isolate 1 and isolate 2 exhibited significant antibacterial activities with a Minimum Inhibitory Concentration ˃ 3.13 …
Natural Bee Space And Comb Cell Dimensions Of Honey Bee Colonies In Mwinkantsi Village, Babati District, Tanzania, Theobald J Theobald, Richard A Kidabaga, Shibonage K Mashilingi
Natural Bee Space And Comb Cell Dimensions Of Honey Bee Colonies In Mwinkantsi Village, Babati District, Tanzania, Theobald J Theobald, Richard A Kidabaga, Shibonage K Mashilingi
Tanzania Journal of Science
The use of improved beehives in beekeeping is emphasized to facilitate easier colony manipulations. The improved beehives used in Tanzania are either imported or manufactured locally by adopting dimensions for European honey bees. However, the dimensions adopted are faulty to the dimensions of local honey bees, leading to problems such as cross-combing which hinder realization of the expected management advantages. This study assessed the characteristic natural bee space and comb cell dimensions of honey bee colonies occupied the traditional split log hives in Mwinkantsi village, Babati district. Results showed that honey bee colonies in Mwinkantsi village exhibited an overall bee …
Nesting Of An Alien Invasive House Crow Corvus Splendens In Verges Along Arterial Roads In Dar Es Salaam, Tanzania, Jasson R. John
Nesting Of An Alien Invasive House Crow Corvus Splendens In Verges Along Arterial Roads In Dar Es Salaam, Tanzania, Jasson R. John
Tanzania Journal of Science
In most cities where little of the original natural vegetation remains, road verges act as home to many urban wildlife. However, the use of road verges for alien avifauna such as House Crow (Corvus splendens) has not been fully documented. This study, conducted between June and July 2021 investigated nesting preferences of the House Crow with particular regards to different verge subdivisions of arterial roads and tree species in Dar es Salaam, Tanzania. Nests were searched in 1813 trees (=42 species) along a stretch of 20 km, and 159 trees (=15 species) were nested with C. splendens. Overall, a total …
An Age-Structured Model For The Effects Of Temperature And Rainfall On The Transmission Dynamics Of Malaria, Alanus Mapunda, Eunice Mureithi, Nyimvua Shaban
An Age-Structured Model For The Effects Of Temperature And Rainfall On The Transmission Dynamics Of Malaria, Alanus Mapunda, Eunice Mureithi, Nyimvua Shaban
Tanzania Journal of Science
This study has investigated the impact of temperature and rainfall on the transmission dynamics of malaria using an age-structured population model, with a class of pregnant women. The equilibrium solutions have been analyzed, and numerical simulations carried out. The results show that there are significantly high rates of malaria infections for the temperature and rainfall ranging between (23.53 0C − 39.80 0C) and (14.82 mm − 38.44 mm) respectively. The results have shown that, the most affected populations are children up to five years old and pregnant women, and that decreasing the rate of transplacental transmission increases the number of …
Advanced Principal Component Analysis Of Various Risk Factors Of Hepatitis B Prevalence In Nigeria., Nureni O. Adeboye, Olumide S. Adesina, Habeeb A. Afolabi, Timothy A. Ogunleye
Advanced Principal Component Analysis Of Various Risk Factors Of Hepatitis B Prevalence In Nigeria., Nureni O. Adeboye, Olumide S. Adesina, Habeeb A. Afolabi, Timothy A. Ogunleye
Tanzania Journal of Science
Hepatitis B virus (HBV) is an infectious disease globally estimated to have caused between 500,000 to 1.2 million deaths annually. HBV prevalence is still high in Nigeria. Thus, this research aimed to identify factors germane to the widespread of HBV infection in an apparent clinical survey. The methods of analysis used were frequency, percentage and Principal component analysis (PCA). This was achieved through hospital record extracts of consultant hepatologists and the dimensionality reduction of the acquired data while retaining essential factors that are germane to the prevalence of HBV infection. The findings revealed that out of seventeen components evaluated in …
Multi-Criteria Analysis Of Municipal Solid Wastes Treatment Scenarios: The Case Of Arusha City, Tanzania, Edwin N. Richard
Multi-Criteria Analysis Of Municipal Solid Wastes Treatment Scenarios: The Case Of Arusha City, Tanzania, Edwin N. Richard
Tanzania Journal of Science
Selection of the most effective municipal solid waste (MSW) treatment option is crucial for sustainable MSW management, but it remains a challenge in most cities of developing countries. More often, the decision-makers make the selection of the treatment options without economic (ECs), and environmental (ENCs) cost evaluations. Consequently, the selected technologies fail to suit the local conditions of the concerned areas and they become a high burden activity to manage. Therefore, this study aimed to use the multi-criteria analysis approach based on the ELECTRE method to analyse the most effective MSW treatment option in terms of ECs and ENCs costs …
Design, Fabrication And Performance Evaluation Of Parabolic And Enhanced Solar Box Cookers In Isimani, Tanzania, Margaret E Samiji, Nuru R Mlyuka
Design, Fabrication And Performance Evaluation Of Parabolic And Enhanced Solar Box Cookers In Isimani, Tanzania, Margaret E Samiji, Nuru R Mlyuka
Tanzania Journal of Science
Clean cooking energy is a global priority, especially in developing countries where firewood and charcoal remain the primary cooking fuels. Solar cooking is an attractive alternative in these countries since it is eco-friendly and utilises freely available solar radiation. Utilisation of solar cookers however is still very low mainly due to the perceived complexity and lack of confidence in the available solar cooker models. In this work, the enhanced box and parabolic solar cookers were designed, fabricated and tested taking into consideration standard solar cookers and local cooking requirements. The enhanced box solar cooker was designed with booster mirrors making …
Effect Of Alkali Treatment On The Chemical Composition And Dyeability Of Sisal Fibers, Cosmas F Kindole, Pendo N Bigambo
Effect Of Alkali Treatment On The Chemical Composition And Dyeability Of Sisal Fibers, Cosmas F Kindole, Pendo N Bigambo
Tanzania Journal of Science
Recently, natural fibers have gained significant attention from many researchers due to the global demand for natural products with low environmental impacts. Sisal (Agave Sisalana), is among the important natural fibers with substantial potential to flourish due to their outstanding properties, including high strength, good absorbency, and abundant availability. However, utilization of these fibers is yet to be fully explored, probably due to their stiff and coarse nature, which limits the overall applications of this sustainable fiber. This study, therefore, investigated the effect of alkali treatment on the chemical composition and dyeability of sisal fibers as a way of adding …
Isolation And Characterization Of Yeast From Sisal Boles For Bioethanol Production, Neema Msuya, Sospeter P Andrew, Abraham K Temu
Isolation And Characterization Of Yeast From Sisal Boles For Bioethanol Production, Neema Msuya, Sospeter P Andrew, Abraham K Temu
Tanzania Journal of Science
Sisal boles are part of the 98% sisal plant waste that is discarded. They have a high bio-diversity of microorganism species, including yeast that can be utilized for bioethanol production. The objective of the study was to isolate yeast cells from sisal boles juice for bioethanol production. Sisal boles for juice extraction were randomly collected from Ubena sisal estate, Pwani region. To preserve the targeted microorganisms cold juice pressing method was used. Pour plate method was used on Potato Dextrose Agar and four distinct colonies were formed and repeatedly sub-cultured to obtain four pure yeast isolates. The juice yield was …
Effects Of Operating Parameters On The Higher Heating Value Of Kitchen Waste During Hydrothermal Carbonization, Veronika Gerald Kimario, Mahir Mohammed Said
Effects Of Operating Parameters On The Higher Heating Value Of Kitchen Waste During Hydrothermal Carbonization, Veronika Gerald Kimario, Mahir Mohammed Said
Tanzania Journal of Science
Hydrothermal carbonization (HTC) is a promising waste to energy technology for conversion of organic wastes with high water contents. There have been relatively few studies focused on evaluating the HTC of solid waste (SW). The studies have provided valuable information regarding HTC feasibility and potential environmental benefits. However, they lack the data necessary to understand how carbonization product composition and reaction extent change with the variation of operating parameter. This study sought to characterize kitchen waste from a university restaurant, to assess the impact of operating parameters on hydro-char and evaluate its potential as a solid fuel. The methodology for …
The Occurrence And Variations Of Total Aflatoxins And Aflatoxin B1 In Different Types Of Chicken Feeds Marketed In Dar Es Salaam, Tanzania, Mambaga S. Muja, Regina P. Mtei, Kessy F. Kilulya
The Occurrence And Variations Of Total Aflatoxins And Aflatoxin B1 In Different Types Of Chicken Feeds Marketed In Dar Es Salaam, Tanzania, Mambaga S. Muja, Regina P. Mtei, Kessy F. Kilulya
Tanzania Journal of Science
This paper reports on the occurrence and variation of total aflatoxins (TAF) and aflatoxin B1 (AFB1) in different types of chicken feeds collected from various locations in Dar es Salaam. A total of 63 chicken feed samples based on cotton seed hulls, sunflower seed hulls, maize bran and mixed feeds were analysed using HPLC-FLD. It was revealed that all samples were contaminated with both TAF and AFB1, varying significantly with respect to their types. Specifically, 52.9% of the cotton seed hulls and 64.7% of maize bran samples exceeded the set tolerable limit of 5 ng g−1 for AFB1. All sunflower …
Assessment Of The Dose Coverage At The Ptv For Ebrt For Cervical Cancer Treatment Plan Using Aaa Varian Eclipse Tps At Ocean Road Cancer Institute, Tanzania, Kelvin G. Ngowi, Mwingereza J. Kumwenda, Khamis O. Amour
Assessment Of The Dose Coverage At The Ptv For Ebrt For Cervical Cancer Treatment Plan Using Aaa Varian Eclipse Tps At Ocean Road Cancer Institute, Tanzania, Kelvin G. Ngowi, Mwingereza J. Kumwenda, Khamis O. Amour
Tanzania Journal of Science
The implementation of the Eclipse treatment planning system software (Version 15.1) at Ocean Road Cancer Institute (ORCI), Tanzania has made the Anisotropic Analytical Algorithm (AAA) the necessary routine tool for dose calculations. However, the accuracy of the AAA algorithm in planning doses specifically for cervical cancer treatment is not well known. Therefore, this study investigated the accuracy of the AAA in dose calculation in terms of the dose coverage at the Plan Target Volume (PTV) for cervical cancer treatment at the ORCI. 50 treatment plans of adult patients with International Federation of Gynecology and Obstetrics (FIGO) stage IB-IIIB cervical cancer …
Exergy Analysis And Performance Testing Of A Gravitational Water Vortex Turbine Runner For Small Hydropower Plants: An Experimental Approach, Adam Faraji, Yusufu Abeid Chande Jande, Thomas Kivevele
Exergy Analysis And Performance Testing Of A Gravitational Water Vortex Turbine Runner For Small Hydropower Plants: An Experimental Approach, Adam Faraji, Yusufu Abeid Chande Jande, Thomas Kivevele
Tanzania Journal of Science
Gravitational water vortex power plants (GWVPPs) have recently gained popularity due to their low initial investment, simple design, ease of maintenance, and low head utilization. However, the technology suffers from poor performance issues caused by the non-optimized parameters of its crucial components, such as the runner. In this study, the performance of a runner (16° blade-hub angle, six blades, and a curved blade profile) for a GWVPP was experimentally examined. The study also employed an exergy analysis. The experimental results revealed that the efficiency of the GWVPP system was in the range of 9.84% to 25.35%, the torque was in …
Radiation Doses To Patients Undergoing Common X-Ray Examinations From Selected Hospitals In Dar Es Salaam And Zanzibar, Tanzania, Ali O. Masoud, Mwingereza J. Kumwenda, Salum K. Salum, Ahmad M. Jusabani
Radiation Doses To Patients Undergoing Common X-Ray Examinations From Selected Hospitals In Dar Es Salaam And Zanzibar, Tanzania, Ali O. Masoud, Mwingereza J. Kumwenda, Salum K. Salum, Ahmad M. Jusabani
Tanzania Journal of Science
This study involved 300 patients, comprising 113 females and 187 males, from six X-ray units. The study focused on evaluating the patient dose for common X-ray examinations at selected hospitals in Dar es Salaam and Zanzibar, Tanzania. The achieved results were compared with previous studies and Diagnostic Reference Levels (DRLs). Entrance surface air kerma (ESAK) was calculated for chest posteroanterior (PA), cervical spine anteroposterior/lateral (AP/Lat), abdomen anteroposterior (AP), and lumbar spine anteroposterior/lateral (AP/LAT) examinations. The study results revealed the following average ESAK values: chest posteroanterior (PA), 0.34 mGy; abdomen anteroposterior (AP), 1.92 mGy; lumbar spine anteroposterior (AP), 2.78 mGy; and …
Performance Of A Bipolar Output Voltage Dc-Dc Converter For Voltage Regulation For Solar Pv System Application, Stampinus M. Stephano, Jackson. J. Justo, Bakari M. M. Mwinyiwiwa
Performance Of A Bipolar Output Voltage Dc-Dc Converter For Voltage Regulation For Solar Pv System Application, Stampinus M. Stephano, Jackson. J. Justo, Bakari M. M. Mwinyiwiwa
Tanzania Journal of Science
A combined Single-Ended Primary-Inductor Converter (SEPIC) and Cuk DC-DC converter that provides a bipolar outputs voltage at the DC bus is widely used in applications especially solar photovoltaic (SPV) system. Maintaining constant output voltages at the DC bus under variable loads and input voltage from SPV is of great interest to many researchers. This paper presents a 400 W mathematical model of a combined SEPIC and Cuk DC-DC converter through state space averaging (SSA) in a continuous conduction mode (CCM). A nested voltage and current control loops are used to regulate voltage and increase the performance of the converter. These …
Concentrations Of Rare Earth And Valuable Elements In Mkuju Uranium Cores For Recovery, Joshua Ndalusanye, Mohamed Mazunga
Concentrations Of Rare Earth And Valuable Elements In Mkuju Uranium Cores For Recovery, Joshua Ndalusanye, Mohamed Mazunga
Tanzania Journal of Science
Rare earth elements and valuable elements within Mkuju uranium core samples were analysed using EDXRF. Mean elemental concentrations for selected elements including Al, P, K, Ti, V, Mn, Fe, Y, Mo, Ag, Ba, La, Ce, and U were determined as 96445.79 μg/g, 547.19 μg/g, 25296.88 μg/g, 5926.33 μg/g, 116.26 μg/g, 455.02 μg/g, 60.1 μg/g, 142.34 μg/g, 15.8 μg/g, 493.98 μg/g, 67.53 μg/g, 118.68 μg/g, and 128.37 μg/g respectively. The Rare Earth elements: Y, La and Ce and valuable elements: Mo, Ag and U have enrichment factor of EF >1.5 which indicates that, these elements were formed from rocks through geological …
Adsorptive Performance Of Composite Of Sugarcane Bagasse Fibres And Multiwalled Carbon Nanotubes For Simultaneous Removal Of Multi–Pollutants From Wastewaters, Joseph W Sengasu, Joseph Yn Philip, Kessy F Kilulya
Adsorptive Performance Of Composite Of Sugarcane Bagasse Fibres And Multiwalled Carbon Nanotubes For Simultaneous Removal Of Multi–Pollutants From Wastewaters, Joseph W Sengasu, Joseph Yn Philip, Kessy F Kilulya
Tanzania Journal of Science
This paper reports on the performance of the prepared Sugarcane Bagasse Fibres – Multiwalled Carbon Nanotubes (SBF–MWCNTs) composite for simultaneous removal of Crystal Violet (CV), Pb(II), Cr(III), Cd(II) and Co(II) from the effluent using a fixed bed method. Different composites of SBF–MWCNTs biosorbent were prepared from mixtures of varied ratios of SBF and MWCNTs at 25 °C. The SBF–MWCNTs materials were characterized by FT-IR spectroscopy and thermogravimetric analysis. Crystallinity index and swelling behaviour of the materials were also determined. Thomas model linear equation was applied in the assessment of pollutants adsorption performance at different conditions. With a column height of …
The Impact Of Land Use And Land Cover Change On Water Quality In Lake Victoria Catchment: A Case Study Of Nkangabile River At Nyegezi Bay, Tanzania, Charles A Mashafi, Makemie Mabula, Masumbuko Semba, Charles N Ezekiel
The Impact Of Land Use And Land Cover Change On Water Quality In Lake Victoria Catchment: A Case Study Of Nkangabile River At Nyegezi Bay, Tanzania, Charles A Mashafi, Makemie Mabula, Masumbuko Semba, Charles N Ezekiel
Tanzania Journal of Science
Understanding the trends and impacts of anthropogenic activities in the water basins and catchments is key to the effective management and conservation of aquatic environments. This study analyses the land use and land cover (LULC) changes in the Nkangabile catchment and their impacts on water quality in the Nyegezi Bay of Lake Victoria, Tanzanian side. GIS and Remote sensing techniques were used to analyze the multi-temporal changes in LULC that occurred in the past 30 years from 1983 to 2013, split into four epochs of 10-year intervals. The changes in LULC were analyzed using image differencing and cross-tabulation for pairwise …
Application Of Combined Geophysical And Archaeological Survey Techniques: A Case Study Of Singida Region, Tanzania, Makarius Peter Itambu, Eliah Mwamakimbula1, Nasra Yahaya, Jasmine Kilela
Application Of Combined Geophysical And Archaeological Survey Techniques: A Case Study Of Singida Region, Tanzania, Makarius Peter Itambu, Eliah Mwamakimbula1, Nasra Yahaya, Jasmine Kilela
Tanzania Journal of Science
The seismically active Singida region in central Tanzania lies at the edge of the East African Rift System (EARS) which is locally designated the Gregory Rift. The archaeological record of the region, especially in the eastern part of the Ikungi District, unlike that of northern Tanzania, is comparatively unknown, despite early archaeological expeditions hinting at its potential. Recent research in the eastern area suggests that it preserves a long record of hominin occupation spanning the Early to Late Stone Age. This interdisciplinary field work, carried out between August 2022 to August 2023, resulted in the discovery of a relatively deep …
Vegetation Invasion Influences Waterbird Assemblages And Aquatic Environmental Parameters In Urban Areas Of Dar Es Salaam, Tanzania, Daudi O. Damas, Jasson R. John
Vegetation Invasion Influences Waterbird Assemblages And Aquatic Environmental Parameters In Urban Areas Of Dar Es Salaam, Tanzania, Daudi O. Damas, Jasson R. John
Tanzania Journal of Science
Waste Stabilisation Ponds (WSPs) serve as refuge habitats for waterbirds in response to the decline of natural wetlands especially in urban settings. Various sewage treatment stages within WSPs attract waterbirds differently based on the specific characteristics of each stage. This study examines the influence of treatment stages on both vegetated and non-vegetated WSPs over a period of one year in Dar es Salaam, Tanzania. Bird surveys were periodically conducted at each treatment stage along with different environmental variables; dissolved oxygen, electrical conductivity, water turbidity, water temperature, pH, and invertebrate biomass. In non-vegetated WSPs, waterbird densities and invertebrate biomass were significantly …
Forest Management Optimization Scenarios For Climatic And Economic Benefits Generated From Tectona Grandis Plantation In Muheza, Tanzania, Omari S. Mgoo, Beatus J. Temu, Japhet N. Mwambusi, Shabani A. O. Chamshama
Forest Management Optimization Scenarios For Climatic And Economic Benefits Generated From Tectona Grandis Plantation In Muheza, Tanzania, Omari S. Mgoo, Beatus J. Temu, Japhet N. Mwambusi, Shabani A. O. Chamshama
Tanzania Journal of Science
Globally, multiple ecosystem services are increasingly becoming an important agenda in sustainable forest management. However, it is still unclear which forest management practices would lead to an optimal bundle of ecosystem services promoting sustainability. This study aimed to determine whether implementing thinning schedule and 30 years rotation age has implications on the provision of ecosystem services and economic benefits of Teak stands in Tanzania. Carbon quantification and cost-benefit analysis methods were used to study the climatic and economic benefits of wood production and carbon sequestration under five scenarios where three thinning schedules and 30 years rotation age were the baseline. …
Evaluation Of Therapeutic Efficacy Of Aloe Rabaiensis Leaf Against Salmonella Gallinarum Challenged In Kuroiler Chicks In Arusha, Tanzania, Mwanaisha S. Mkangara
Evaluation Of Therapeutic Efficacy Of Aloe Rabaiensis Leaf Against Salmonella Gallinarum Challenged In Kuroiler Chicks In Arusha, Tanzania, Mwanaisha S. Mkangara
Tanzania Journal of Science
Salmonella gallinarum, a bacterium causing fowl typhoid in gallinaceous birds, poses significant economic challenges to the chicken industry in Tanzania. This study investigated the potential of Aloe rabaiensis in managing S. gallinarum in Kuroiler chicks. The clinical signs, viable cell count, live weight, heterophils, lymphocytes, and monocyte counts were evaluated using ninety-four chicks grouped into T1, T2, T3 (challenged with S. gallinarum), and T4 (unchallenged with S. gallinarum). The findings revealed no statistically significant differences between the treated and control groups (P > 0.05) in viable cell count, live weight, mortality rate, heterophils, lymphocytes, and monocyte counts. However, there were clinical …
Analysis Of The Factors Affecting The Oil Recovery From Oilseeds In A Multistage Crosscurrent Leaching Process, Samuel V. Manyele
Analysis Of The Factors Affecting The Oil Recovery From Oilseeds In A Multistage Crosscurrent Leaching Process, Samuel V. Manyele
Tanzania Journal of Engineering and Technology (TJET)
The analysis of the total oil recovery from oilseeds in a multi-stage crosscurrent leaching process is presented. The model created using mass balance equations for three stages was used to analyze the factors affecting total oil recovery, To. The key performance factors (raw meal feed flow rate, solvent feed flow rate in each stage, solvent distribution factor for each stage, percent oil in the raw meal (Poil), solids to solution ratio in the underflow (N), solvent to solids ratio (SSR), solvent to oil ratio (SOR) and wash ratio (WR) were varied while assessing To. While SSRi and SORi ranged from …
Data Communication Over Power-Lines: A Review On Technical, And Applications Challenges, Abdi Abdalla
Data Communication Over Power-Lines: A Review On Technical, And Applications Challenges, Abdi Abdalla
Tanzania Journal of Engineering and Technology (TJET)
This paper presents a review study on the data communication over power-lines, commonly referred to as power-line carrier, power-line communication (PLC), mains communications, or power-line digital subscriber line (PDSL). This study examines the technical and application advantages and challenges associated with adopting PLC as a preferred alternative technology for wideband or broadband data communication. The broader coverage area of the PLC network gives it a distinct advantage over other communication network technologies. Additionally, implementing a communication system using the existing power-line network is more cost-effective and less time-consuming compared to constructing a new network from scratch. However, the primary challenge …
Development And Testing Of Small-Scale Flash Dryer For Maize Bran, Eden Ngowi
Development And Testing Of Small-Scale Flash Dryer For Maize Bran, Eden Ngowi
Tanzania Journal of Engineering and Technology (TJET)
Sun drying is the most common technique used to dry various food products due to its economic convenience. However, it is not effective owing to its unreliable nature leading to microbial deterioration and aflatoxin contamination of food. In Tanzania, about 1.3 million tonnes of maize bran are at risk of deterioration annually due to improper drying. The aim of this study was to design, fabricate and test an efficient small-scale flash dryer for maize bran. Using principles of material and energy balance, a small-scale flash dryer with a throughput of 500 kg of dry product per hour was designed resulting …
‘‘Domicilelessness’’ And Livelihoods In Urban Areas: Case Of Maasai In Dar Es Salaam, Tanzania, Ombeni Swai
‘‘Domicilelessness’’ And Livelihoods In Urban Areas: Case Of Maasai In Dar Es Salaam, Tanzania, Ombeni Swai
Tanzania Journal of Engineering and Technology (TJET)
The study aimed at demonstrating Maasai migration into Dar es Salaam urban areas and their challenges in accessing accommodation. Methodologically, the study deployed secondary data analysis following a descriptive research design. Furthermore, this study was conducted through both qualitative and quantitative research approaches. The study was conducted from 2018 to 2022 of which a random sample of 100 (N=100) was targeted. The data was analyzed using the Statistical Package for Social Sciences (SPSS Version 16). Findings: The Maasai means of accommodation are divided into four main categories: completed houses (6%), under-construction sites (39%), halfway constructed and abandoned structures (31%), and …