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Articles 571 - 600 of 952
Full-Text Articles in Entire DC Network
Land Use, Microclimate, And Surface Runoff Linkages: Space-Time Modeling From Rockel-Seli River Basin, Sierra Leone, C. Wilson, B. Liang, S. Wilson, Fenda A. Akiwumi
Land Use, Microclimate, And Surface Runoff Linkages: Space-Time Modeling From Rockel-Seli River Basin, Sierra Leone, C. Wilson, B. Liang, S. Wilson, Fenda A. Akiwumi
School of Geosciences Faculty and Staff Publications
This study mainly utilized the Soil and Water Assessment Tool (SWAT) together with SWAT-CUP, both free and open source software (FOSS), to construct a distributed hydrologic flow model for the Rokel-Seli River basin, Sierra Leone, in a bid to spatiotemporally evaluate the role of changes in land use/land cover (LULC) and microclimate on streamflow regimes. The model was informed by LULC data derived from three Landsat satellite images collected in 2002, 2010, and 2016. The LULC data was generated with the aid of several python libraries accessed through the FOSS Anaconda Navigator. LULC change analysis demonstrated that between 2002 and …
Urban Areas In Coastal Zones, Richard C. Dawson, M. Shah Alam Khan, Vivien Gornitz, Maria Fernanda Lemos, Larry Atkinson, Julie Pullen, Juan Camilo Osorio, Lindsay Usher, Cynthia Rosenzweig (Ed.), William Solecki (Ed.), Patricia Romero-Lankao (Ed.), Shagun Mehrotra (Ed.), Shobhakar Dhakal (Ed.), Somayya Ali Ibrahim (Ed.)
Urban Areas In Coastal Zones, Richard C. Dawson, M. Shah Alam Khan, Vivien Gornitz, Maria Fernanda Lemos, Larry Atkinson, Julie Pullen, Juan Camilo Osorio, Lindsay Usher, Cynthia Rosenzweig (Ed.), William Solecki (Ed.), Patricia Romero-Lankao (Ed.), Shagun Mehrotra (Ed.), Shobhakar Dhakal (Ed.), Somayya Ali Ibrahim (Ed.)
CCPO Publications
[First Paragraph] Coastal cities have been subjected to extreme weather events since the onset of urbanization. Climatic change, in particular sea level rise, coupled with rapid urban development are amplifying the challenge of managing risks to coastal cities. Moreover, urban expansion and changes and intensification in land use further pressure sensitive coastal environments through pollution and habitat loss.
Protected Area Planning And Management: Supporting Local Stakeholder Participation With An Asset-Based, Biocultural Approach, Nicole M. Wengerd
Protected Area Planning And Management: Supporting Local Stakeholder Participation With An Asset-Based, Biocultural Approach, Nicole M. Wengerd
Antioch University Dissertations & Theses
Given the uncertainties and risks of anthropogenic climate change, the urgency to conserve biodiversity has renewed urgency that has prompted a number of international forums, treaties, and agencies to advocate for the establishment of new and/or expansion of existing protected areas. One of the most broadly recognized efforts to expand the global protected area network can be found in the Aichi Biodiversity Targets, outlined in the Convention on Biological Diversity Strategic Plan for 2011-2020, adopted in 2010 by 196 countries. Target 11 calls for the expansion of terrestrail and inland water areas, as well as coastal marine areas. While the …
Prediction Of Rainfall In The Southern Highlands Of Tanzania, Pasvolo Mwinuka, Christian Uiso
Prediction Of Rainfall In The Southern Highlands Of Tanzania, Pasvolo Mwinuka, Christian Uiso
Tanzania Journal of Science
Previous studies on the variability of March to May (MAM) and October to December (OND) rainfall in East Africa have mainly covered the whole region without considering the local climate zones such as the Southern Highlands of Tanzania. Results from the regional studies have shown that the Indian Ocean Dipole (IOD) and Outgoing Longwave Radiation (OLR) have strong association with OND rainfall and weak one with MAM rainfall in East Africa. The present study was aimed at determining the potential predictors for the MAM and OND rainfall by considering IOD, El Ni o Southern Oscillation (ENSO), Quasi-biennial Oscillation (QBOu30 and …
Exploring Technological Strategies For Valorization Of Solid Sisal Waste: A Research Review, Amelia Kivaisi, Anthony Mshandete
Exploring Technological Strategies For Valorization Of Solid Sisal Waste: A Research Review, Amelia Kivaisi, Anthony Mshandete
Tanzania Journal of Science
The sisal industry in Tanzania generates large amounts of waste which is an un-tapped bioresource. Research was undertaken to establish appropriate technologies for its valorisation to mushrooms, biogas and biogas manure (BGM).Physical and biological pre-treatments achieved methane yield increments of 23-30% whereas co-digestion with fish waste achieved methane yield increments of 59-94%. Sisal fibre waste was demonstrated to be a novel biofilm-carrier for treating sisal pulp leachate. With a loading rate of 9.0 kgVS/m3/day, the packed-bed bioreactor was operated without process stress. Sisal decortication waste (SLDW) and sisal boles (SBW) were found to be suitable for oyster mushroom cultivation. With …
Design Of A Small Scale Wind Generator For Low Wind Speed Areas, Ra Msuya, Rrm Kainkwa, Mi Mgwatu
Design Of A Small Scale Wind Generator For Low Wind Speed Areas, Ra Msuya, Rrm Kainkwa, Mi Mgwatu
Tanzania Journal of Science
Most small scale level wind turbine generators are directly driven system, variable speed, and partially connected power electronic converter system. Choice of such system is to avoid costs associated with gearbox. However, due to low wind speed in most of the tropical countries, synchronous generators with smaller or medium speed Permanent Magnet (PM) generator design found to be important and given high performance efficiency. In order to be able to harvest wind energy in off-grid population efficiently, there was a need to design a synchronous generator that can be able to operate under low wind speed, directly connected to the …
Effect Of Natural Blue-Green Algal Cells Lysis On Freshwater Quality, Kessy Kilulya, Titus Msagati, Bhekie Mamba
Effect Of Natural Blue-Green Algal Cells Lysis On Freshwater Quality, Kessy Kilulya, Titus Msagati, Bhekie Mamba
Tanzania Journal of Science
Blue-green algae grow in freshwater bodies when they are provided with suitable factors such as nutrients and appropriate weather conditions. Their cell lysis occurs naturally when they encounter unfavourable conditions. This study reports on the types and amounts of fatty acids added into freshwater due to the algal cell lysis. The investigation on the amount of fatty acids released into water due to algal cells lysis was performed by placing samples in two compartments, one with no light allowing the algae cells to die while the other compartment was kept in favourable conditions enough to sustain the life of algae. …
Nuclear Analytical Techniques In Tanzania: A Review, Yusufu Koleleni
Nuclear Analytical Techniques In Tanzania: A Review, Yusufu Koleleni
Tanzania Journal of Science
It has been a tradition to perceive that Nuclear/Atomic radiations are only related to Nuclear/Atomic bombs, heavy ammunitions and consequently applications for human and non-peaceful destructions. In this paper the questions on how the Nuclear/Atomic radiations may be used for peaceful applications and specifically to Tanzanian situations are presented. Methods like Energy Dispersive X-Ray fluorescence (EDXRF), Particle Induced X-Ray Emission (PIXE), Electron probe Micro-Mass Analysis (EPMA), Neutron Activation Analysis (NAA) for investigations of different types of samples in geology; environmental, medical, biological and chemical are discussed.
Progression Magazine, 2017 Winter, Coastal Carolina University
Progression Magazine, 2017 Winter, Coastal Carolina University
Progression Magazine
Magazine of the College of Science at Coastal Carolina University.
Bacteria Mitigation In Sponge Mariculture, Jambiani Zanzibar, Claire Johnston
Bacteria Mitigation In Sponge Mariculture, Jambiani Zanzibar, Claire Johnston
Independent Study Project (ISP) Collection
The declining seaweed industry coupled with efforts by the NGO Marine Cultures have led to the establishment of sponge mariculture in Jambiani, Zanzibar. However, growing cyanobacteria levels have substantially increased sponge mortality rates. In order to determine successful cyanobacteria mitigation treatments, six populations of farm ropes, support lines, and sponges were (a) untreated, (b) manually cleaned or submerged in solutions of (c) 2% hydrogen peroxide, (d) 4% hydrogen peroxide, (e) 50 g/L salt, or (f) 70 g/L salt. No conclusions were drawn from rope treatments, no techniques were effective for support line treatments, and both concentrations of hydrogen peroxide were …
Accessibility And Usability Of Government Websites In Tanzania, Joel S. Mtebe, Aron W. Kondoro
Accessibility And Usability Of Government Websites In Tanzania, Joel S. Mtebe, Aron W. Kondoro
The African Journal of Information Systems
The government of Tanzania has been embracing information systems specifically websites in order to widen access to government services, lower administrative costs, and to increase public participation in decision making. As a result, almost every ministry, department, and agency (MDA) has developed a website of different kind. However, the majority of existing websites were developed without sufficiently considering user needs which indicates that they do have some usability and accessibility problems. This study used SortSite tool to evaluate accessibility and usability of government websites taking a sample of 22 websites. The report from the SortSite tool was then checked against …
Strategies For Environmental Education For Youths And Adults, Chumbe Island Coral Park, Zanzibar, Samantha Pfeffer
Strategies For Environmental Education For Youths And Adults, Chumbe Island Coral Park, Zanzibar, Samantha Pfeffer
Independent Study Project (ISP) Collection
Chumbe Island Coral Park (CHICOP) is a privately-owned business that strives to follow the best principles of ecotourism, conservation, and environmental education. Their environmental education initiative is award-winning and has affected thousands of students and community members in Zanzibar. This study looked at the environmental education techniques that CHICOP already has in place by observing two pre-visits, three island-visits and one-post visit, and determined where there was a need for enhanced and new techniques for teaching about the environment. Evidence of climate change on Chumbe Island was also recorded to aid in the educational tools and to create a database …
Ict Adoption And Use In Tanzania Smes, Cuthbert Msuya
Ict Adoption And Use In Tanzania Smes, Cuthbert Msuya
Tanzania Journal of Engineering and Technology (TJET)
The purpose of this paper was to establish the status of ICTs adoption and use in Tanzania SMEs. Previously, it was shown that there is a shortage of comprehensive, accurate and up to date data on many aspects of the SMEs sector including the level of ICT adoption and use. This has affected government efforts aimed at development of this important sector in the economic development of the country. Results show that: (i) By year 2014, adoption of ICTs in SMEs had grown from almost non-existence in year 2004 to 80.1% computer technology use, and over 56.6% for use of …
Forest Collaborative Meeting Agenda, Athens, Greece, Environment For Development (Efd) Initiative
Forest Collaborative Meeting Agenda, Athens, Greece, Environment For Development (Efd) Initiative
Forest Collaborative Research
Agenda for the 1st Forest Collaborative Workshop on 27 – 28 June 2017 at Athinais Hotel in Athens, Greece Leontius Hall.
Solid Waste Management In The Developing World: The Role Of Local Government In Kisumu, Kenya, Rachel Schlueter
Solid Waste Management In The Developing World: The Role Of Local Government In Kisumu, Kenya, Rachel Schlueter
Independent Study Project (ISP) Collection
As the world becomes more urbanized, more waste is being produced. According to United Nations projections in 2014, 66% of the world’s population will be living in cities by 2050 with the majority of growth occurring in African cities. Managing urban waste in lower-middle income countries, such as Kenya, poses a particular challenge as income levels rise, municipal capacities are stretched, and foreign loans complicate accountability. This project sought to assess the practical role of local government when managing solid waste in the context of long-term development strategies. The objectives of this study are to first establish the current role …
Utilization And Accessibility Of Securinega Virosa For Medical Use In Morogoro Municipality, Sasha Friedrich
Utilization And Accessibility Of Securinega Virosa For Medical Use In Morogoro Municipality, Sasha Friedrich
Independent Study Project (ISP) Collection
Approximately 80% of rural communities in Tanzania utilize the services of traditional healers. This is largely because modern medicine is often expensive, inaccessible, or has undesirable side effects. This study investigates use of traditional medicine in Morogoro Urban district where people do have access to hospitals. In particular, this study aims to assess the utilization and accessibility the plant species Securinega virosa for medicinal use by identifying and interviewing the actors involved in the supply chain from harvester to consumer. I conducted semi-structured interviews with eight traditional healers and one herbal medicine shopkeeper. I expected harvesters to express a decline …
Public Perception Of Leadership In The Municipal Solid Waste Sector, Allison Creeger
Public Perception Of Leadership In The Municipal Solid Waste Sector, Allison Creeger
Department of Environmental Studies: Undergraduate Student Theses
No abstract provided.
47th Annual Wku Student Research Conference, Student Research Council,
47th Annual Wku Student Research Conference, Student Research Council,
Student Research Conference Select Presentations
See document below for project abstracts
2017 Abstracts Student Research Conference, Student Research Conference
2017 Abstracts Student Research Conference, Student Research Conference
Student Research Conference Select Presentations
No abstract provided.
The Influence Of Values On The Intention And Usage Of Mobile Phone Technology:A Case Of Tanzanian Smes, Renatus Mushi, Almar Ennis, Deirdre Lillis, Said Jafari
The Influence Of Values On The Intention And Usage Of Mobile Phone Technology:A Case Of Tanzanian Smes, Renatus Mushi, Almar Ennis, Deirdre Lillis, Said Jafari
Conference papers
Mobile phone technology has been relied upon in performing a number of activities in the SMEs. In less developed regions, computing infrastructures are very poor thereby depending highly on mobile phones. The improvement of technology in the mobile phones has seen more applications and services being accessed through them. This gives SMEs, especially in developing countries, a preferable alternative to desktop computing technology. However, to maximise the usability of mobile phone technology in SMEs context, key factors which influence users’ perception on its acceptance need to be explained clearly. This study explains the factors influencing employees’ intentions and use of …
Spatially Continuous Dataset At Local Scale Of Taita Hills In Kenya And Mount Kilimanjaro In Tanzania, Sizah Mwalusepo, Estomih S. Massawe, Tino Johansson
Spatially Continuous Dataset At Local Scale Of Taita Hills In Kenya And Mount Kilimanjaro In Tanzania, Sizah Mwalusepo, Estomih S. Massawe, Tino Johansson
All Peer-Reviewed Publications
Climate change is a global concern, requiring local scale spatially continuous dataset and modeling of meteorological variables. This dataset article provided the interpolated temperature, rainfall and relative humidity dataset at local scale along Taita Hills and Mount Kilimanjaro altitudinal gradients in Kenya and Tanzania, respectively. The temperature and relative humidity were recorded hourly using automatic onset THHOBO data loggers and rainfall was recorded daily using GENERALR wireless rain gauges. Thin plate spline (TPS) was used to interpolate, with the degree of data smoothing determined by minimizing the generalized cross validation. The dataset provide information on the status of the current …
Levels Of Formaldehyde And Acetaldehyde In Selected Bottled Drinking Water Sold In Urban Areas In Tanzania, Esther H.J. Lugwisha, John A.M. Mahugija, Christopher Mwankuna
Levels Of Formaldehyde And Acetaldehyde In Selected Bottled Drinking Water Sold In Urban Areas In Tanzania, Esther H.J. Lugwisha, John A.M. Mahugija, Christopher Mwankuna
Tanzania Journal of Science
The levels of formaldehyde and acetaldehyde in bottled drinking water and the effect of storage time and storage conditions on their levels were determined. A total of 144 samples of six brands of bottled drinking water were purchased from Dar es Salaam, Iringa, Mwanza and Arusha regions in Tanzania. Analysis was performed using HPLC on the 1st day and after 14 and 42 days of storage in a refrigerator, at room temperature and exposure to sunlight. The levels of formaldehyde and acetaldehyde in the refrigerated samples ranged from 2.46 to 19.25 μg/L and from not detected (ND) to 58.70 μg/L, …
Petrographic And Geochemical Characteristics Of The Kiejo, Rungwe And Ngozi Volcanic Rocks, Southern Tanzania: Implication For Tectonic Activities And Magmatic Differentiation, Athanas S. Macheyeki
Petrographic And Geochemical Characteristics Of The Kiejo, Rungwe And Ngozi Volcanic Rocks, Southern Tanzania: Implication For Tectonic Activities And Magmatic Differentiation, Athanas S. Macheyeki
Tanzania Journal of Science
Rock samples were collected from the Kiejo, Rungwe and Ngozi volcanoes, southern Tanzania. Results show that, in the Ngozi and Rungwe volcanoes, magma cooled relatively fast. After large part of the magma had crystallized, nucleation of crystals at a relatively slow rate crystallized from interstitial fluids of the primary magma that had already crystallized fine grained minerals resulting into large grains of minerals. In the Kiejo volcano, both zoned and unzonned olivine crystals exist; unzoned crystals being primary and the zoned ones are secondary. Such observations also indicate that the magma responsible for these rocks had interstitial fluids that crystallized …
Performance Of Water Filters Towards The Removal Of Selected Pollutants In Arusha, Tanzania, Beatrice Kiagho, Revocatus Machunda, Askwar Hilonga, Karoli N. Njau
Performance Of Water Filters Towards The Removal Of Selected Pollutants In Arusha, Tanzania, Beatrice Kiagho, Revocatus Machunda, Askwar Hilonga, Karoli N. Njau
Tanzania Journal of Science
This paper presents the findings of a study carried out to investigate the efficiency of selected common water filters in the removal of Escherichia coli, organic matter and fluoride. Additionally, the Total Suspended Solids, Turbidity and colour were also considered for assessing the performance of the filters in ensuring safe water provision. The results showed that various filters performed differently at particular retention times. Removal of Escherichia coli, was found to be 100%, 75%, 96%, 96.5, 98.5%forbio-sand, slow sand, ceramic, bone char and membrane purifier respectively. Organic matter removal was found to be 47%, 43%, 53%, 43.4% for bio-sand, slow …
Spread Of Tylodelphys Mashonense (Digenea: Diplostomidae) By Grey Heron Ardea Cinerea And Great White Egret A. Alba In Lake Victoria, Tanzania, Fred D. Chibwana, Gamba Nkwengulila
Spread Of Tylodelphys Mashonense (Digenea: Diplostomidae) By Grey Heron Ardea Cinerea And Great White Egret A. Alba In Lake Victoria, Tanzania, Fred D. Chibwana, Gamba Nkwengulila
Tanzania Journal of Science
Despite the fact that Tylodelphys mashonense, parasites of the cranial cavity of the catfish Clarias gariepinus, are ubiquitous in freshwater systems, little is known on their spread. As such, we examined a total of 152 piscivorous birds, belonging to 6 species; 43 great cormorant Phalacrocorax carbo, 33 grey heron Ardea cinerea, 26 hamerkop Scopus umbretta, 22 great white egret Ardea alba, 15 marabou stork Leptoptilos crumeniferus and 13 pied kingfisher Ceryle rudis foraging in the Lake Victoria. Out of the six bird species only A. cinerea and A. alba were found infected by T. mashonense with prevalence of 42.4% and …
Assessment Of Dairy Wastewater Treatment And Its Potential For Biogas Production At Tanga Fresh Limited, Anna S. Nyaki, Karoli N. Njau
Assessment Of Dairy Wastewater Treatment And Its Potential For Biogas Production At Tanga Fresh Limited, Anna S. Nyaki, Karoli N. Njau
Tanzania Journal of Science
The extent of pollution of dairy wastewater treated in a septic tank and its potential for biogas production was investigated. Performance of the existing treatment system was assessed through characterization of both raw and treated effluents. From the analysis parameters like Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD5), Total Suspended Solids (TSS), alkalinity, turbidity, color and phosphorus disclosed inadequate system performance with treated effluent displaying higher values of organic matter than the allowed discharge limits according to the national standards. Optimal conditions for biogas production such as temperature, pH and type of inoculum were determined through batch experiments. The …
An Assessment Of Soil Erosion On Pemba Island Using The Universal Soil Loss Equation, Emily Gillispie
An Assessment Of Soil Erosion On Pemba Island Using The Universal Soil Loss Equation, Emily Gillispie
Independent Study Project (ISP) Collection
Healthy soil is necessary for maintaining agricultural productivity, which is the basis of the economy on Pemba Island, Tanzania. Soil erosion is a notable concern for subsidence-farming villages, as it reduces the agricultural potential of farmland through the loss of nutrients, organic matter, and depth of quality growing soil (Georhing, 2009). The island of Pemba is the perfect case study for soil erosion, as their economy is largely based in agriculture, and the combined hilly topography and monsoonal climate make it highly susceptible to soil erosion. Yet, Pemba’s main cash crops are clove and fruit trees, which have potential to …
The Use Versus Availability Of Wood Extraction At The Baga Ii Forest Reserve Border Adjacent To Kizanda Village In The West Usambara Mountains, Tanzania, Rebecca Halter
Independent Study Project (ISP) Collection
Tropical forests, especially in developing countries, continue to face serious threats of deforestation due to human pressures and poor management. These forests are at risk of disappearing and taking their water catchment and ecosystem services with them. Kizanda Villagers’ illegal woodfuel and polewood extraction poses a threat to the future health and existence of the Baga II Forest. This study, conducted from April 5th to April 19th, 2016, aimed to examine the use versus availability of tree species along the forest border. Twenty disturbance transects, each 4 meters wide, were conducted perpendicular to the Baga II forest border. The transects …
Residential Density, Parents’ Sexual Activity And Teenage Sexual Behavior In Yogyakarta, Luluk Rosida, Evi Martha, Besral Besral
Residential Density, Parents’ Sexual Activity And Teenage Sexual Behavior In Yogyakarta, Luluk Rosida, Evi Martha, Besral Besral
Kesmas
Pada daerah kumuh dan padat, orangtua sering terpaksa harus berbagi ruang tidur dengan anak-anaknya sehingga anak-anaknya sudah terpapar dengan aktivitas seksual sejak dini. Penelitian ini bertujuan mengetahui kepadatan hunian, aktivitas seksual orangtua, dan efeknya terhadap perilaku seksual remaja di Yogyakarta. Penelitian ini menggunakan desain potong lintang dengan mewawancarai 268 keluarga yang memiliki anak remaja yang dipilih secara acak di daerah kumuh perkotaan dan daerah pedesaan pada bulan Maret – Mei 2015. Analisis data dilakukan menggunakan uji kai kuadrat dan regresi-cox multivariat. Hasil penelitian ini menunjukkan bahwa orangtua yang tinggal di hunian padat memiliki risiko dua kali lebih besar untuk melakukan …
Detectable Viral Load In Late Pregnancy Among Women In The Rwanda Option B+ Pmtct Program: Enrollment Results From The Kabeho Study., Michelle M Gill, Heather J Hoffman, Emily A Bobrow, Placidie Mugwaneza, Dieudonne Ndatimana, Gilles F Ndayisaba, Cyprien Baribwira, Laura Guay, Anita Asiimwe
Detectable Viral Load In Late Pregnancy Among Women In The Rwanda Option B+ Pmtct Program: Enrollment Results From The Kabeho Study., Michelle M Gill, Heather J Hoffman, Emily A Bobrow, Placidie Mugwaneza, Dieudonne Ndatimana, Gilles F Ndayisaba, Cyprien Baribwira, Laura Guay, Anita Asiimwe
Epidemiology Faculty Publications
There are limited viral load (VL) data available from programs implementing "Option B+," lifelong antiretroviral treatment (ART) to all HIV-positive pregnant and postpartum women, in resource-limited settings. Extent of viral suppression from a prevention of mother-to-child transmission of HIV program in Rwanda was assessed among women enrolled in the Kigali Antiretroviral and Breastfeeding Assessment for the Elimination of HIV (Kabeho) Study. ARV drug resistance testing was conducted on women with VL>2000 copies/ml. In April 2013-January 2014, 608 pregnant or early postpartum HIV-positive women were enrolled in 14 facilities. Factors associated with detectable enrollment VL (>20 copies/ml) were examined …