Digital Commons Network^™

Ex-Post Livestock Diseases, And Pastoralists' Averting Decisions In Tanzania, Mazbahul Ahamad

Department of Agricultural Economics: Dissertations, Theses, and Student Research

Little is known about the factors affecting pastoralists’ livestock vaccination decisions. In this thesis, we use a novel survey-based dataset on pastoralists living in the Ruaha landscape in Tanzania, and employ several econometric approaches to identify the factors affecting pastoralists’ decision-making process about livestock vaccination when disease occurrence and severity, vaccination and healthcare access costs and other related variables are known. Results from binary choice models that account for excess zeros indicate that socially and economically active households are more likely to vaccinate their livestock. The results also identify positive marginal effects of illness incidence and having wage earners and …

Gene Expression Differences In Hybrids At Beginning Of Speciation Continuum, Long A. Nicholas

Biology Theses - Archive

The formation of new species results from reproductive isolation, or the barrier to successful mating between organisms of divergent populations. The degree of reproductive isolation can be measured by the reduction in fitness of hybrid offspring that can result from incompatibilities between the genotypes of each parent. In this study, genetic incompatibilities arising at the earliest stage of speciation are examined between intraspecific hybrids in which an effectively sterile hybrid phenotype termed “still” is observed at ~50% frequency in crosses between divergent populations of Tribolium castaneum. Timing and magnitude of gene expression regulation is examined at four stages of development, …

Acceptability And Feasibility Of Point-Of-Care Cd4 Testing On Hiv Continuum Of Care In Low And Middle Income Countries: A Systematic Review, Minh D. Pham, Paul A. Agius, Lorena Romero, Peter Mcglynn, David Anderson, Suzanne M. Crowe, Stanley Luchters

Population Health, East Africa

Background: CD4 testing is, and will remain an important part of HIV treatment and care in low and middle income countries (LMICs). We report the findings of a systematic review assessing acceptability and feasibility of POC CD4 testing in field settings.

Methods: Electronic databases were searched for studies published in English between 2005 and 2015 that describe POC CD4 platforms. Studies conducted in LMICs and under field conditions outside a laboratory environment were eligible. Qualitative and descriptive data analysis was used to present the findings.

Results: Twelve studies were included, 11 of which were conducted in sub-Saharan countries and used …

Teacher Preferences On Technology Use Using The Iteach Implementation Model: A Case Study In A Tanzanian Private School, Julia Keegan

All Theses And Dissertations

To advance both transformative school leadership skills and the use of ICT integration in this school, while aiming to enhance positive school change, this study used the iTEaCH (ICT-Technogogy-and-Collegiality) Implementation Model proposed by Choy (2013) to investigate, quantitatively, teacher perceptions of ICT use in a case study school in Tanzania. The iTEaCH Implementation Model provides focus on teachers’ choice of technology use, desire for technology use, pedagogy perceptions, and collegiality to identify gaps that might be used to inform teachers and school leaders of technology provision, professional development, and collegial support needs in the school.

Using a slightly modified version …

The Journal Of Conventional Weapons Destruction Issue 20.2 (2016), Cisr Jmu

The Journal of Conventional Weapons Destruction

Mobile Technologies in CWD

South and Central Asia

Field Notes

Research and Development

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, …

Naturally Occurring Mellein-Type 3,4-Dihydroisocoumarins And Related Lactones: Synthetic Approaches - A Review, Stephen Jm Mdachi

Tanzania Journal of Science

Mellein and its derivatives are the most common 3,4-dihydroisocoumarins and are known to exhibit an array of biological activities such as antibacterial, antifungal, antimalarial, antiallergic, antitumor, anti-inflammatory, antiulcer, pheromonal, plant growth-promoting and antileukemic activities. Other mellein derivatives are recognized phytotoxins, neurotoxins, hepatotoxins, nephrotoxins and teratogens. Consequently, considerable efforts have been directed at studying these natural products. While most of the reported studies have focused on the isolation, characterization and bioassay studies of melleins, a number of synthetic studies have also been reported. This paper focuses on synthetic approaches towards these biologically active and, thus, potentially useful natural products. The aim …

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 …

Identification Of Tanzanian Saprophytic Edible Mushrooms By Amplification And Sequencing Of Its/Lsu Regions Of Ribosomal Rna Operon, Ibrahim Juma, Anthony Manoni Mshandete, Donatha Damiani Tibuhwa, Amelia Kajumulo Kivaisi

Tanzania Journal of Science

In this study, ten wild saprophytic edible mushrooms samples, collected from Tanzania natural forests and planted trees, and their two domesticated forms were characterized by in-vitro/in-vivo amplification and sequencing of ITS/LSU regions. Mushroom genomic DNA was extracted by ZR Fungal/Bacterial DNA MniPrep Kit. ITS and LSU regions were amplified using ITS-4/ITS-5 and LR16/LROR primers, respectively and sequenced. The amplicons with messy sequences were cloned. For analyzing recombinant E. coli DH5α cells, colony PCR and sequencing were done using M13-F/M13-R primers. The studied mushrooms were identified as Amylosporus sp. IJ-2014, Polyporales sp., Polyporus tenuiculus, Pleurotus cystidiosus, Laetiporus sp. IJ-2014, Lentinus sajor-caju, …

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

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 …

Variation Of Small Mammal Populations Across Different Habitat Types In The Serengeti Ecosystem, Flora J Magige

Tanzania Journal of Science

This study investigated the abundance and diversity of small mammals in cultivated land (unprotected area) and wooded grassland in the Serengeti National Park (protected area) in the Serengeti ecosystem. Small mammal populations were sampled through capture-mark-recapture trapping techniques in March-April 2010. A total of 896 trap nights covering wet season, 9 species of rodents and 1 species of soricomorphs (shrew family) were captured. Overall, Multimammate rat Mastomys natalensis (Smith) was by far the most abundant rodent in cultivated land (28%) while inside the park, shrew Crocidura sp., was high in numbers (8%). A significantly higher abundance (trap success) of small …

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 …

Ligninolytic Enzymes Of The Fungus Isolated From Soil Contaminated With Cow Dung, Rose J. Masalu

Tanzania Journal of Science

Lignin is the complex polymer and very few microorganisms are able to degrade it. The study aimed at isolating lignin degrading fungi from soil contaminated with cow dung using ligninolytic screening media. The study was able to isolate one ligninolytic fungus by using lignin media. The strain was screened for  production of ligninolytic enzymes  using Rhemazol Brilliant blue R (RBBR) dye, 2,2-azino-bis (3- ethylbenzthiazoline)-6-sulfonate (ABTS) and guaiacol in a semi-solid medium. The isolate decolourized RBBR dye, ABTS and guaiacol in a semi solid media. The strain was further tested for lignin peroxidase (LiP), manganese peroxidase (MnP) and laccase (Lac) enzymatic …

Assessment Of Concentrations Of Trace And Toxic Heavy Metals In Soil And Vegetables Grown In The Vicinity Of Manyoni Uranium Depositin Tanzania, F.A. Kapile, In Makundi

Tanzania Journal of Science

This study reports on determination of concentrations of trace and toxic heavy metals in soil and vegetables grown near of Manyoni uranium deposit. Soil and vegetable samples were collected from five sites namely Mitoo Mbuga, farming area, Miyomboni, Tambukareli and near water pump. The concentrations of heavy metals in soil and edible vegetables samples were analyzed using Energy Dispersive X-ray Fluorescence Spectrometry (EDXRF).All vegetable samples were found to have higher concentrations (in μg/g) of trace elements such as Ni (67.3) in pea leaves, Cu (14.9) in pumpkin leaves, Fe (478.6), (200.5) and (337.1) in pea, pumpkin and spinach leaves respectively, …

Content-Analysis Of Social Networks And Mobile Phone Text Messages Among Hiv Patients In Tanzania, Soson Jong, Lisa M. Thompson

International Nursing Research Congress (INRC)

Session presented on Sunday, July 24, 2016:

Purpose: The study aimed to explore and understand HIV patients' social networks and support in relation to their use of mobile text messages (SMS). This study also presents HIV patients' perspectives on use of SMS for HIV care and management. Mobile technology has become a promising communication and educational platform for both health care providers and patients. Mobile phone messages have been used to provide reminders to patients about medication adherence, medical appointments, and to encourage physical activities. The mobile technology appears to have more potential to improve health service delivery where health …

‘Essential But Not Always Available When Needed’ – An Interview Study Of Physicians’ Experiences And Views Regarding Use Of Obstetric Ultrasound In Tanzania, Annika Åhman, Hussein Kidanto, Matilda Ngarina, Kristina Edvardsson, Rhonda Small, Ingrid Mogren

Faculty of Health Sciences, East Africa

Background The value of obstetric ultrasound in high-income countries has been extensively explored but evidence is still lacking regarding the role of obstetric ultrasound in low-income countries.

Objective We aimed to explore experiences and views among physicians working in obstetric care in Tanzania, on the role of obstetric ultrasound in relation to clinical management.

Design A qualitative study design was applied. Data were collected in 2015, through 16 individual interviews with physicians practicing in obstetric care at hospitals in an urban setting in Tanzania. Data were analyzed using qualitative content analysis.

Results Use of obstetric ultrasound in the management of …

The Rise, The Fall, And The Eventual Return Of Modern Piracy: Addressing An Age Old Problem With Modern Solutions, Jordan Wilson

Journal of Maritime Law and Commerce

No abstract provided.

Genotype × Environment Interactions For East African Orange-Fleshed Sweetpotato Clones Evaluated Across Varying Ecogeographic Conditions In Uganda, Silver Tumwegamire, Patrick R. Rubaihayo, Wolfgang J. Grüneberg, Don R. Labonte, Robert O.M. Mwanga, Regina Kapinga

Faculty Publications

African dry and starchy (DS) orange-fleshed sweetpotato [Ipomoea batatas (L.) Lam] (OFSP) cultivars, distinct from American moist or medium dry and sweet OFSP, have potential to fight vitamin A deficiency (VAD) in the world. This study assessed the genotype × environment (G × E) interactions in multienvironment trials (METs), the genetic correlations for total root yield (TYLD), biomass (BIOM), harvest index (HI), root dry matter (RDM), root starch (RST), root sucrose (RSU), root β-carotene, (RBC), root Fe (RFE), root Zn (RZN), root Ca (RCA), and root Mg (RMG) and the potential contributions of the cultivars to fight VAD and mineral …

Use Of Cycling Paths Along The Morogoro Brt Line, Ford Sanger

Independent Study Project (ISP) Collection

As the urban population continues to increase rapidly in Dar es Salaam it will become increasingly important to find sustainable means of urban transportation. With planned infrastructure improvements in the city to help alleviate traffic congestion, bicycles, which represent a largely underutilized form of urban transportation, have the potential to play a large role in the future of the city. Through background research, direct observations, community surveys, and interviews, both formal and informal, this study sought to understand the impact of the recent addition of bike lanes along the first phase of the Dar Bus Rapid Transit line. It was …

Productive Role In The Financial Performance Of The Banking: An Empirical Study In A Sample Of Iraqi Banks, Abdulsalam Lafta Saeed, Ali Abdulaziz Abbas

Journal of Economics and Administrative Sciences

The research aims to study the basic concepts of banking productivity and discuss different approaches to study what ends to identify the most important possible standards applied to measured within the Iraqi banking environment as well as research into the causes of low and high Iraqi banking productivity and identify possible treatments to curb those reasons as to ensure the rise. And in line with the research problem, which states what is the level of productivity and what are the causes of decline and the rise in private banking research sample individually. And what the Iraqi private banks and what …

Africa And The Rule Of Law, Makau Wa Mutua

Journal Articles

The rule of law is often seen as a panacea for ensuring a successful, fair and modern democracy which enables sustainable development. However, as Makau Mutua highlights, this is not the case. Using the example of African states, he describes how no African country has truly thrown off the shackles of colonial rule and emerged as a truly just nation state – even though many have the rule of law at the heart of their constitutions. This, he argues, is because the Western concept of the rule of law cannot be simply transplanted to Africa. The concept must be adapted …

Meaning And Meaning-Extension Of The Verb Kata In Kiswahili, Devet Goodness

Journal of Humanities and Social Sciences

This paper presents an analysis of the verb ‘kata’ in Kiswahili. It examines the semantic behavior of the verb ‘kata’. It pays attention to the semantic expansion of the verb ‘kata’ when it co-occurs with different nouns to create metaphorical meanings. In this paper, it is shown that the verb ‘kata’ is extremely productive and allows as many meanings as possible when it co-occurs with different nouns. The findings show that the semantic features of the verb kata change depending on the features of the objects, and whether they are in metaphorical or concrete contexts. It is found that the …

The Nature Of Conditional Sentences In Nyakyusa, Amani Lusekelo

Journal of Humanities and Social Sciences

The mechanisms utilized to introduce conditional construction in Nyakyusa are partly similar to the patterns available in some Bantu languages because its protasis is introduced by the word lıınga. The counterfactual marker angali introduces the apodosis of the counterfactual sentences, similar to Zulu and Swahili. The main difference is that Nyakyusa differentiates reality and unreality situations primarily through TAM formatives. For instance, realistic situations manifest in future and present tenses while unrealistic events are primarily indicated by remoteness in past tense.

Towards An Anglophone African Literature Praxis: A Case Of A Literary Linguistic Conundrum And The Teaching Of African Letters, Michael Andindilile

Journal of Humanities and Social Sciences

This article attempts to bring together various strands vital in the study and teaching of Anglophone African literature in an increasingly globalised world, which no longer has the luxury of ignoring the rich literatures from this unique continent often given an unwarranted bad name. It looks beyond the literary-linguistic conundrum to examine how the most can come out of the interpretation and teaching of Anglophone African literatures, primarily drawing on examples from Chinua Achebe’s oeuvre. It primarily argues that the increasingly transnational world has heightened the need to study and teach literatures from traditionally non-English contexts in the language, English, …

Facebooking The Tanzanian Elections: Citizen And Party Campaigners In The Social Media Ecosystem, Deodatus P. Shayo

Journal of Humanities and Social Sciences

The 2015 presidential election cycle in Tanzania featured social media networks in electoral campaigning. Citizen and party campaigners emerged and used Facebook, Twitter, YouTube, Instagram and WhatsApp mobile instant-messaging application to recruit and mobilise voters. This article attempts to examine the most recent explosion of citizen and party election campaigners on Facebook. The analysis focuses on their engagement with Facebook campaigns, and whether the use of this social media platform amplified the promotion of presidential candidates. The findings indicate that some presidential candidates were hardly visible on Facebook and could not get citizen and party campaign-initiated support. Some were actively …

A Comparative Study Of Headedness In Ruhaya Compounds, Emmanuel Ilonga Dr

Journal of Humanities and Social Sciences

This paper presents endocentric and exocentric compounds in Ruhaya, with specific focus on their lexical properties, position of headwords, semantic relation between headwords and modifiers, and the semantic classification of noun-noun compounds. It offers a comparison between Ruhaya and other Bantu languages on these aspects, and extends the comparison to Indo-European languages (English, Dutch and French). It was found that Ruhaya has left-headed compounds, and words from the same and different lexical categories can combine to make up compound words. In the case of headed compounds, there is a kind of semantic relations through which modifiers slightly change the meaning …

Constituent Order And Focus In Naro Language, Rose Letsholo,, Budzani Gabanamotse-Mogara

Journal of Humanities and Social Sciences

In Naro, the base word order is SOV (Visser, 2010). However, this language displays interesting variations in word order due to the fact that different constituents can occur in non-canonical positions, particularly the sentence initial position. It is in lieu of this that this paper investigates the following questions: (1) In Naro, what constituents can be fronted and which cannot? (2) What is the significance of the PGN marker in the order of the constituents in Naro sentences? (3) What is special about the sentence initial position given that different lexical constituents can occupy this position? Regarding question (1), we …

Containing Opportunism In Buyer-Seller Relationships: A Case Of Tour Operators And Accommodation Establishments In The Tanzania's Tourism Industry, Benjamin Moses Sakita

Business Management Review

This study draws on the transaction cost theory (TCA), relational contracting theory (RCT) and resource dependence theory (RDT). The author investigates the impact of interpersonal and inter-firm trust, prior relationship duration, and asymmetric buyer dependence on supplier opportunism in the tour operator-accommodation establishment relationship. Data analysed is from a survey involving 81 tour operators in Tanzania ' s tourism industry. The data corroborates predictions of RCT, TCA and RDT. Specifically, trust dissipates supplier opportunism. Moreover, the effect of asymmetric buyer dependence on supplier opportunism moves in a non-monotonic fashion over the range of relationship duration. The non-monotonic movement indicates that, …

Credit Availability For Tanzania's Small Businesses: A Gender Perspective, Josephat Lotto

Business Management Review

The purpose of this study was to examine whether firm and owners ' characteristics are driven by gender and whether gender is attributable to credit accessibility in small and locally-owned firms in Tanzania. The study uses data collected from 400 small businesses through questionnaires and interviews and analyses it using univariate and multivariate statistical tools The findings show that female owners are less educated, have less work experiences and their firms are relatively smaller and younger than in the case for males. Moreover, female-owned firms were more likely to be organised as sole proprietorship or partnerships. Also the findings indicate …