Dissertations / Theses on the topic 'Tanzania'

Thesis (PhD (Earth Sciences))--University of Stellenbosch, 2008.
Tanzanite, a blue/violet gemstone variety of zoisite (Ca2Al2O.AlOH[Si2O7][SiO4]) is only produced in NE Tanzania. The only known locality is an approximately 7km2 deposit in the Merelani area. It is one of the most sought after gemstones in the world with an industry sales value of between hundred and fifty and two hundred million dollars per year. At the current production rates and estimated resources the tanzanite deposit has a life expectancy of around 20 years. Despite the economical and scientific importance as well as the geological uniqueness of the deposit very little research has been conducted on the geology and petrology of the deposit and the characteristics of tanzanite. The primary aim of the research summarised in this dissertation was to gain an understanding of the geological conditions that led to the formation of this unique variety of zoisite. In order to achieve this, a variety of geological disciplines were addressed including the lithostratigraphic setting, the deformational history, the metamorphic history and conditions, the geochemical and isotopic composition, the mineral chemistry as well as the physical and optical properties of the tanzanite. Extensive field work was conducted over a seven year period, which included surface and underground mapping, surface trenching, surface and underground core drilling, structural measurements and an intensive sampling programme. Various analytical techniques were used in order to petrologically and mineralogically investigate both the deposit and tanzanite itself, including optical microscopy, XRF analyses, laser-ablation ICP-MS, quantitative chemical analyses by means of the electron microprobe, XRD analyses, back-scattered electron microscopy, isotope analyses, fluid-inclusion studies, Vis/UV/NIR spectroscopy, IR spectroscopy, and EPR studies. This study revealed an intricate and complex geological history for the formation of tanzanite. The deposition of carbon-rich layers, formed during the development of a sequence of shallow shelf sediments consisting primarily of various organic carbon (δ13C between –22,85 ‰ and –26,74 ‰) -rich mudstone horizons and limestone beds is seen as the first phase of the mineralisation process. These Archaean sediments were deposited in a back- or fore-arc spreading basin. The organic carbon-rich mudstone layers acted as the first phase of vanadium accumulation in the stratigraphic sequence, and are intercalated with a material with a volcanic origin (metabasites), which most likely contributed to the enrichment of amongst others V. Early diagenetic processes were followed by an extended metamorphic and deformation (D1) history, reaching upper granulite facies conditions (10 – 12 kbar and 850 oC to 1000 oC) at ca. 1000 Ma. The high-grade metamorphic history was followed by multiphase retrograde deformation events (D2 and D3) that developed as a result of crustal uplift. The D2 event probably occurred between 850 and 600 Ma at P-T conditions estimated at between 8 to 7 kbar and 700 to 650 oC. A third stage of deformation (D3) resulted in the formation of overprinting structures and occurred during the later stages of the Pan-African (550 – 500Ma) event during amphibolite/greenschist facies conditions (7 to 6 kbar and 600 to 520 oC). The deformational history of the deposit played a critical role in the mineralisation processes. Of the four main deformation events identified, three played a critical role in the mineralisation process. The first event led to the development of early structural features as defined by F1, S1 and L1. This was followed by a multiphase D2 event consisting of three different orders of folding (F2a, F2b and F2c) and the formation of boudinage. The association between tanzanite and boudins as well as the stacking and multiple duplication of the boudinaged ore-zone through isoclinal folding resulted in multiple “ore-shoots”. These ore-shoots follow the plunge of the F2c fold closures and results in mine-able features within the ore-body. The third deformation event led to complex structural overprinting of the earlier fabric as observed in S3 and L3 and resulted in the deformation of the F2 structures through crosscutting F3 folds. Calc-silicate layers developed in the stratigraphic sequence as a result of metamorphic and metasomatic interaction between calcium enriched (boudinaged calc-silicates) and depleted horizons (graphitic gneisses) during a skarn-forming episode. V-rich green grossular garnet (tsavorite) crystallised in tension zones within and in proximity to the boudins during prograde metamorphism. Tanzanite mineralisation occurred during the retrograde stages at ca. 585 ± 28 Ma with P-T conditions estimated at ca. 5 to 6 kbar and 650 ± 50 oC. Two distinctive tanzanite-forming processes are distinguished. The first involves the formation of tanzanite as a result of retrograde reaction of grossular garnet. The second process involves the migration of V and Ca -enriched fluids along brittle shear zones to tension sites where fluids reacted with wall rock during a drop in P-T conditions to precipitate tanzanite. Fluid inclusion and stable-isotope studies concluded that the ore-forming fluids were derived from the dehydration of the metasedimentary sequence and consisted of a mixture of H2O, CH4, H2S and N2. Mineralogical investigation of tanzanite indicated that trace concentrations of vanadium within its crystals structure causes its blue / violet colour. It was proved that the vanadium originated from the abundant organically derived graphite within the deposit. Spectroscopic and EPR analyses revealed the importance of the Ti4+ / Ti3+ ratio within the crystal structure of tanzanite with regard to its colour characteristics. The heating of tanzanite results in a couple valence exchange reaction Ti 3+ + V 4+ → Ti 4+ + V 3+ which causes an increase the blue / violet colour of tanzanite. The research conducted led to the development of a successful geological model for the tanzanite mining and treatment activities in the Merelani area of NE Tanzania. As such the research contributed to the establishment of a successful tanzanite mine, based on sound geological principles, which may act as a role model for other gemstone mines worldwide.

Thesis (MSc)--University of Stellenbosch, 2007.
ENGLISH ABSTRACT: The aim of the study is to ascertain whether geochemical exploration techniques can be used in the search for tanzanite deposits in the Merelani area, NE Tanzania. Previous studies have successfully demonstrated a partial extraction method (in situ soil leaching) in identifying prospective ultramafic bodies at the Rockland ruby mine in the Mangare area, Kenya, thereby demonstrating the usefulness of geochemical methods in gemstone exploration. In this study, a partial extraction as well as a whole-rock geochemical method was used to determine the applicability of these methods in prospecting for tanzanite mineralisation using different sampling media, such as soil, stream sediment and calcrete. It is possible that this geochemical approach may not be as effective as physical methods such as the separation and examination of heavy mineral suites. However, its viability needs to be evaluated due to the potential efficiency and relative logistic ease of the method. In essence the scientific method employed is to compare overburden (soils, stream sediments and calcrete) chemistry with known underlying geology, the latter having been established via diamond core drilling. A positive correlation would allow the prediction of overburden covered tanzanite mineralisation. Soil samples were collected from a trench dug perpendicular to regional lithological strike over both barren and tanzanite-bearing horizons. XRF trace element data for the soils was compared to the chemistry of the underlying lithologies. ICP-AE data derived from 1 molar HCL soil leachate (12 hour leach) and soil XRF data, from the same samples, was compared, using a mass balance index, to discern any hydromorphic dispersion of selected trace elements and to evaluate the leachate as a viable alternative to XRF analysis. In general, a good correlation exists between the soil and rock trace element data profiles over the length of the section. However, Ti- and Zr-normalised mass balance calculations show some down-hill drift, but this does not disrupt the overall pattern. The ICP-AE acid leach data show that hydromorphic dispersion is low, that the trace elements of interest (V, Cr, Ni and Cu) are hosted within non-soluble phases. Consequently, the leach technique is not a viable alternative to XRF analysis of the soils. XRF analysis of the soils was shown to be potentially useful in identifying new areas of mineralisation as the soils overlying a graphitic calc-silicate schist, that always occurs adjacent to the tanzanite mineralisation in the Merelani area, was found to be easily identifiable based on anomalous concentrations of V. An exploration concession was chosen for stream sediment sampling on the basis of the presence of large streams, of a few tsavorite mines indicating high prospectivity for tanzanite, and because of a variation in geology on the property. Tanzanite and tsavorite are cogenetic in the known tanzanite deposits. In this case the aim was to investigate the possible occurrence of tanzanite-like geochemical anomolies (i.e. the anomalous V observed in the soil chemistry investigation) could be detected in the vicinity of the tsavorite mines. Tsavorite, the gem variety of grossular garnet, also contains high concentrations of V. The samples were analysed by XRF whole-rock methods for trace element content. The data shows a number of clear positive V anomalies in the study area. The data also shows that each of the existing or abandoned mines in the area is marked by a positive V anomaly. This section of the study also demonstrated a relatively low degree of stream sediment dispersion of the trace elements of interest – most likely a function of the semi-arid climate. The fine fraction (<90μm), however was shown to be mobilised to a relatively larger degree than the coarse (180μm – 300μm) and medium (90μm - 180μm) fractions. As is predictable from the leachate analysis, factor analysis of the data shows that the trace elements are dominated by heavy mineral geochemistry and that a study in heavy mineral exploration might provide a cheaper and more viable option to those explored in this study. Calcrete samples were taken from an abandoned, 10m deep mine shaft, which was sunk through the calcrete to reach the tanzanite deposit. The shaft was sampled from the bottom, closest to the tanzanite mineralisation, to the surface to investigate the association between trace element geochemistry and proximity to the deposit. There was no vertical association between the trace element geochemistry of the calcrete and proximity to the tanzanite deposit. There was also no clear indication in the geochemistry of the calcrete of the existence of the tanzanite deposit beneath it. This further indicates the immobility of the elements of interest in this environment. This study has demonstrated that properly constrained soil and stream sediment geochemical studies may be of use in tanzanite exploration. However, it must be stressed that this is only the case if the geochemical signature of the lithological package associated with the mineralisation is unique and well known.
AFRIKAANSE OPSOMMING: Die doel van hierdie studie is om te bepaal of geochemiese eksplorasie tegnieke vir die soek na tanzaniet afsettings in die Merelani area, noord-oos Tanzanië, gebruik kan word. Voorige studies het gewys dat ‘n gedeeltelike ekstraksie metode (in situ grond looging) gebruik kon word om prospektiewe ultramafiese liggame by the Rockland rubyn myn in die Mangare area, Kenia te identifiseer. Hierby is gedemonstreer dat geochemiese eksplorasie metodes suksesvol in edelsteen eksplorasie toegepas kan word. In hierdie studie is ‘n gedeeltelike ekstrasksie en heel-rots geochemiese metodes gebruik om die toepaslikheid van hierdie metodes op tanzaniet eksplorasie te toets. Verskillende geologiese materiale is gemonster, naamlik grond, stroom sedimente en kalkreet. Dit is moontlik dat hierdie geochemiese benadering nie so effektief soos fisiese metodes soos swaar mineraal skeidings mag wees nie. Dit is nogtans belangrik om die toepaslikheid van hierdie metodes op tanzanite eksplorasie te toests, as gevolg van die potensiële effektiwiteit en relatiewe logistiese gemak van die metodes. Die essensie van die wetenskaplike metodiek wat in hierdie studie gebruik is, is om die geochemie van die grond, stroom sedimente en kalkreet te vergelyk met die geochemie van die onderliggende geologie wat deur middel van diamant boorwerk vasgestel is. ‘n Positiewe korrelasie sou dan dui op ‘n bedekte tanzaniet afsetting. Grond monsters is van ‘n sloot geneem wat loodreg op die strekking van die tanzaniet gemineraliseerde en ongemineraliseerde horisonne gegrawe is. XRF spoor element data van die gronde is vergelyk met die chemie van die onderliggende gesteentes. IGP-AE data wat bekom is deur die monsters met 1 molaar HCl te loog (12 uur loging) is vergelyk met XRF data van dieselfde monsters deur middel van ‘n massa balans indeks om te bepaal of daar enige hidromorfiese dispersie van sekere spoor elemente is en om die toepaslikheid van loging as ‘n alternatief tot die heel-rots metode te bepaal. In die algemeen is daar ‘n goeie korrelasie tussen die grond en rots spoor element data profiele oor die lengte van die seksie. Alhoewel, Ti- en Zr-genormaliseerde massa balans data profiele wys dat daar ‘n mate van afwaartse beweging van grond na die voet van die heuwel is, maar dat hierdie ‘n breuk in die algemene patroon vorm nie. Die IGP-AE data dui daarop dat die hidromorfiese verspreiding van spoor elemente laag is en dat die spoor elemente wat van belang is (V, Cr, Ni en Cu) in nie-oplosbare fases gesetel is. Gevolglik is die logings metode nie ‘n toepaslike alternatief tot die heel-rots XRF metode op gronde nie. XRF analises op die gronde het gewys dat die XRF metode moontlik nuttig kan wees om nuwe areas van tanzanite mineralisasie aan te dui, omdat die gronde wat ‘n grafietiese kalk-silikaat skis oorlê, wat altyd langs die tanzaniet draende horisonne voorkom, is op grond van anomale konsentrasies van V geïdentifiseer. ‘n Eksplorasie konsessie is op die basis van die teenwoordigheid van groot strome, ‘n paar tsavoriet myne wat aanduidend is van hoë prospektiwiteit vir tanzaniet is en as gevolg van ‘n variasie in geologie in die area vir stroom sediment monstering gekies. Tanzaniet en tsavoriet is kogeneties in bekende tanzaniet afsettings. In hierdie geval was die doel om te ondersoek of tanzanietagtige anomalieë (nl. die anomale konsentrasies van V wat in die ondersoek van die grond chemie opgemerk is) in die omgewing van die tsavoriet myne geïdentifiseer kan word. Tsavoriet, die edelsteen variëteit van grossulaar granaat, bevat hoë konsentrasies V. Die monsters is deur middel van die XRF heel-rots metode vir spoor elemente geanaliseer. Die data dui op ‘n paar monsters met hoë V konsentrasies in die ondersoek area. Hierdie studie het ook gedui op ‘n lae stroom sediment verspreiding van die spoor elemente van belang, heel waarskynlik is dit ‘n funksie van die semi-ariede klimaat. Die fyn fraksie (< 90μm) blyk tot ‘n groter mate as die growwer (90μm tot 180μm en 180μm - 300μm) fraksies gemobiliseer te word. Soos voorspel kan word deur die loogings analise het faktor analise gewys dat die spoor elemente deur swaar mineraal geochemie gedomineer word en dat ‘n studie op swaar minerale moontlik ‘n goedkoper en meer toepaslike eksploraise metode is as die wat in hierdie studie ondersoek is. Kalkreet monsters is van ‘n ongebruikte, 10m diep myn skag wat deur die kalkreet gesink is om by die tanzaniet gemineraliseerde horison uit te kom geneem. Monsters is van die bodem van die skag, naaste aan die tanzaniet mineralisasie, tot die oppervlak geneem om die assosiasie tussen die spoor element geochemie en afstand van die tanzaniet mineralisasie te ondersoek. Geen vertikale assosiasie tussen spoor element geochemie en die nabyheid tot die tanzaniet afsetting kon vasgestel word nie. Daar was geen duidelike aanduiding in die geochemie van die kalkreet op die onderliggende tanzanite afsetting nie. Hierdie is ‘n verdere annduiding op die nie-mobiele toestand van spoor elemente in hierdie omgewing. Hierdie studie het suksesvol gedemonstreer dat goed gedefinieerde grond en stroom sediment geochemiese studies moontlik in geochemiese eksplorasie vir tanzaniet bruikbaar kan wees. Dit is belangrik om in gedagte te hou dat dit slegs die geval is as die geochemie van die litologiese paket wat met die mineralisasie geassosieer is uniek en goed bekend is.

Access to suitable wheelchairs may seriously impact the ability of people with physical disabilities to integrate into regular community life. The overall aim of this study was to determine the extent to which the needs of users of wheelchairs manufactured locally in Tanzanian are met. The specific objectives of the study were to determine users' satisfaction with the wheelchairs manufactured in Tanzania, their satisfaction with services associated with the provision, repair and maintenance of these wheelchairs, and the extent to which these wheelchairs enabled them to carry out their daily activities. A quantitative descriptive cross-sectional study was carried out among 75 users of locally manufactured manual wheelchairs, aged 18-65 years and residing in Dar es Salaam, Arusha and the Kilimanjaro regions of Tanzania. Data was collected using a questionnaire consisting of demographic items and two existing instruments, the Functioning Everyday with a Wheelchair (FEW) and Quebec User Evaluation of Satisfaction with Assistive Technology (QUEST) 2.0. Data were analysed with the Statistical Package for the Social Sciences (SPSS) software program version 20.0. Descriptive analysis was performed using frequencies and proportions for categorical data or median and ranges for numerical data. The chi-square test was conducted to determine whether there were significant difference between gender and place of residence (rural/urban) and satisfaction with functional needs, wheelchair and activity and participation.

Le mode de vie et les moyens d’existence des Maasaï ont été marqués par différents changements mais le pastoralisme est resté le cœur de leur activité. La situation actuelle est différente. Les Maasaï ne sont plus en mesure de compter seulement sur le pastoralisme en tant qu’activité principale et certains ont même quitté le pastoralisme et opté pour d’autres activités.Parmi les forces qui exercent des changements dans le pastoralisme on trouve les politiques foncières et les mesures d’utilisation des sols, qui ont été mises en œuvre par les gouvernements (coloniaux et postcoloniaux) à différents moments. Kuney (1994) rapporte que 60% environ de la terre appartenant autrefois aux Maasaï a été placée sous une production agricole intensive. L’éducation et l’exposition à d’autres modes de vie (qui sont principalement des produits de la globalisation, de la culture technologique et de l’interaction avec d’autres sociétés) ont créé des glissements idéologiques les jeunes en regard de la pertinence, la logique, la durabilité et la faisabilité du pastoralisme comme activité source de revenus et moyen d’existence dans le contexte actuel
Maasai lifestyles and livelihoods have been undergoing various changes like other persons but pastoralism has remained their core livelihood activity. However, the current situation is different. They are no longer able to relay solemnly on pastoralism as their main livelihood activity and others have exited pastoralism and opted for other livelihoodAmong the forces exerting changes in pastoralism are policies on land tenure and land uses which were created and implemented by governments at different times. Kuney (1994) report that about 60% of the former Maasai grazing land in Tanzania has been put under intensive agricultural production. Attainment of education increased exposure to other livelihoods styles created ideological shifts especially among the youths with regard to relevance, rationale, sustainability, and feasibility of pastoralism as a livelihood activity in the current context

Syftet med denna uppsats är att utveckla en fördjupad förståelse för flickors relation till idrott i Moshi, Tanzania. Jag ville veta mer om hur en verksamhet arbetar för flickors möjligheter att utöva idrott. Jag ville också veta mer om hur verksamhetens personal och flickorna själva beskriver flickornas idrottande och dess betydelse för dem. Jag har valt kvalitativa metoder, såsom semistrukturerade intervjuer och en observation. För att uppnå studiens syfte genomfördes intervjuer med personal i en verksamhet. Jag har också gjort en gruppintervju med tjejer från ett netbollslag. Även en observation under en netbollsträning har gjorts. För bättre förståelse av ämnet har den insamlade datan analyserats genom tidigare rapporter och forskning samt teorin om social konstruktivism och begreppet självkänsla och empowerment. Utifrån resultatet i denna studie har det bekräftats att det finns vissa skillnader mellan flickor och pojkars idrottande i Moshi. Flickor möjligheter att utöva idrott är begränsad. Detta är kopplat till flera olika faktorer inom det tanzaniska samhället. Vidare framkommer det att möjligheter att utöva idrott finns. I skolor och andra organisationer får flickorna möjlighet att delta i idrott. Vidare har det bekräftats att idrotten har en positiv effekt på flera olika sätt. Idrottens betydelse har beskrivits med både positiva och negativa effekter för de flickor som deltar i idrottandet. Effekter som ökat självförtroende och empowerment är exempel på positiva effekter som idrotten medför. En annan positiv effekt som har beskrivits är vikten av idrott för sexualiteten. Exempel på negativ effekt är exkludering.
The aim of this essay is to develop an in-depth knowledge of girls’ relationship to sports in the city of Moshi, Tanzania. I would like to know more about how one organization are working for girls’ opportunities of practice sports. Also, I would like to know more about how staff and the girls from the organisation describe girls practice of sports and its meaning to them. I have chosen qualitative methods, such as semi-structured interviews and one observation. To achieve the aim, I have conduct interviews with staff at one organisation. I also have done one group interview with girls from a netball team. Also, one observation during one netball training has been done. For better understanding of the subject, the collected data have been analysed through previous researches and the theory of social constructivism and the concept self-esteem and empowerment. According to the results of this study, it has been confirmed that there´s some differences between girls´ and boys' sports in Moshi. Girls opportunities of practice sports are limited. This is linked to several different factors within Tanzanian society. Furthermore, it appears that opportunities of practice sports exist. In schools and other organisations, girls are given the opportunity to participate in sports. Furthermore, it has been confirmed that sport has a positive effect in many ways. The meaning of sports has been described with both positive and negative effects for girls who participate in sports. Positive effects such as increased self-esteem and empowerment are examples of described effects. Another positive effect which has been described is the importance of sport for the sexuality. Examples of a negative effect is exclusion.

In Tanzania, fiscal adjustment policies emphasized an increase in tax revenue and cuts in public spending to correct the fiscal deficit. However, adjustment policies restricted the impact of fiscal policies in correcting fiscal deficit because they led to a low GDP growth and narrowed the tax base. The government overlooked the need to have an alternative tax base that could compensate for the fall in GDP growth. In that respect, the main purpose of this study is to examine the impact of fiscal adjustment policies in correcting the fiscal deficit in Tanzania in different adjustment periods in the 1973-2000 period. The thesis adopts a country study approach to analyse the effect of changes in the tax structure on the fiscal position using the primary balance as a proxy. The study also uses time series econometric methods to examine the impact of economic policy regime changes on public spending and GDP growth and the implications for fiscal policy in Tanzania. The study finds that changes in macroeconomic conditions either temporarily expanded or narrowed the tax bases and influenced the correction of the fiscal deficit in different years. Fiscal adjustment policies were pro-cyclical, thus leading to low GDP growth. This limited the effect of changes in the tax structure in reducing the fiscal deficit. Lastly, policy regime changes led to public spending instability and a structural break in the GDP data series. This signified that economic policy reforms caused fundamental changes in the economy, with implications for macroeconomic and fiscal policies in Tanzania. In sum, the results suggest that pro-cyclical policies are harmful for countries pursuing fiscal adjustment policies to correct a fiscal deficit.

This dissertation describes an action research case study carried out at a sub-village school at Nyamakurukuru, Utete, Rufiji District, Tanzania. The study was a fully independent research activity funded and led by a female Irish environmental and community specialist who has fifteen years experience of working in rural Tanzania, five of which were in Rufiji District. The aim of the action research was to engage a community of villagers, teachers, students and district officers in a participatory process to adapt a module of a school curriculum to the local context, and teach it in order to describe one way in which contextualization, using local and indigenous knowledge and active discovery teaching-learning processes, can be done. The major research question, which I wished to answer for one specific case, was: Does integrating local environmental cultural knowledge into formal schooling contribute to curriculum relevance? If so, in what way? This document describes the background and context of the research, the motivation and the theoretical basis for the work, the methodology and methods, and the action research process itself. The results are interpreted and discussed in the light of current theoretical perspectives on education and environmental education. The main findings within the case are that: Contextualization improved relevance of education and thus its quality by: • breaking through traditional frames/barriers between teachers and students, students and elders and community and teachers, • allowing formal education to take place outside of the school, • necessitating a change in pedagogy1 to more learner-centered, discovery methods, • allowing indigenous knowledge to come into the classroom, • stimulating creativity and increased confidence, and • bringing local socio-political environmental issues into the classroom. This study provides a case example of how education processes, when engaging local cultural knowledge, can improve the relevance, and thus an aspect of the quality of teaching and learning in school-community contexts, while providing a conduit for integrating environmental education into the formal school curriculum. It provides insights into the key issue of relevance which currently faces educators of children in wetlands in Tanzania. Recommendations were made for the case studied and may be useful beyond the boundaries of the case: • Give more explicit government policy and strategic support for community involvement in educational content–epistemologies and pedagogies. • Weaken framing (hierarchical power positions) to encourage greater partnership between school, home and community to improve relevance. • Investigate the provision of education beyond schools. • Provide practical teacher and community training on use of learner-centered, discovery and active pedagogies. • Provide teacher and community education on biodiversity and the environment. • Provide relevant reference texts and research data on the ecology, biodiversity, vegetation, hydrology, agriculture, sociology, history and other relevant subjects. • Officially nurture a culture that learning should be enjoyable. • Allow the curriculum freedom, in these times of increasing risk for rural tropical wetland communities, to make the curriculum fit the local issues rather than vice versa. • Nurture critical analysis of the curriculum in local pedagogic discourse i.e., at the local contextualization level of the home, community and school.

The health system in Tanzania follows the pattern of government structures of leadership in the form of hierarchy. The national health care system has a pyramidal structure that prioritized primary care at affordable costs to majority of people. It consists of the Village Health Service, District Hospitals, Regional Hospitals, Consultant Hospitals. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/33768

Tanzania, officially known as the United Republic of Tanzania, is a mid-sized country in Eastern Africa bordering the Indian Ocean. It is home to a population of about 46.1 million people. Tanzania has a tropical climate, temperature range between 10°C and 32°C. Currently, With more than 10 bottled water companies, high supply competition in commercial cities and consumption of water bottles have significantly increased, moreover, majority of entrepreneurs in Tanzania own small shops and retail business, door to door and moving shops, the amount of plastic bags and plastic material waste have been a considerable threat toward environment protection. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/36270

This study addresses a core problem that was uncovered in records from coastal management monitoring initiatives on the eastern coast of Tanzania associated with the application and use of coastal monitoring indicators developed by external development partners for the coastal zone. These records suggest that local communities, who are key actors in participatory monitoring of coastal and marine resources, face many challenges associated with adapting and applying the said frameworks of indicators and monitoring plans. These indicators tend to be scientifically abstracted and methodologically reified; given prevailing contextual and socio‐cultural realities amongst them. The research project addresses the following key research question: How can processes of abstraction, conceptualisation, and representation of TEK contribute to the development of coastal management indicators that are less reified, more contextually and culturally congruent, and which may potentially be used by resource users in the wider social learning process of detecting trends, threats, changes and conditions of mangrove and fisheries resources? In response to the contextual problem and the research question, the study employs processes of abstraction and experiential learning techniques to unlock knowledge that local communities have, as an input for underlabouring existing scientific indicators on the Eastern coast of Tanzania. The research is constituted as critical realist case study research, involving two communities on the eastern coast of Tanzania, namely the Moa and the Boma communities (in Mkinga coastal district). Overall, the study involved 37 participants in a series of interviews, focus group discussions, and experiential learning processes using visualised data, and an experiential learning intervention workshop, and follow‐ups over a period of 3 years. The study worked with mangroves and fisheries to provide focus to the case study research and to allow for in‐depth engagement with the assumptions and processes associated with indicators development and use. Through the above mentioned data generation processes, critical realist analysis, and experiential learning processes involving abstraction and representation of traditional ecological knowledge held by mangrove restorers and fishers in the study areas, the study uncovers possible challenges of adapting and applying scientific indicators in participatory monitoring of a mangrove ecosystem. Using ampliative modes of inference for data analysis (induction, abduction and retroduction) and a critical realist scientific explanatory framework known as DRRREI(C) (Resolution, Re‐description, Retrodiction, Elimination, Identification, & Correction) the study suggests a new approach that may lead to the development of a framework of indicators that are less reified, more congruent to users (coastal communities), and likely to attract a wider context‐based social learning which favours epistemological access between scientific institutions (universities inclusive), and local communities. It attempts to establish an interface between knowledge that scientific institutions produce and the potential knowledge that exists in local contexts (traditional ecological knowledge), and seeks to widen and improve knowledge sharing and experiential learning practices that may potentially benefit coastal and marine resources in the study area. As mentioned above, the knowledge and abstraction processes related to the indicators development focussed on the mangrove ecosystem and associated fisheries, as engaged in the two participating communities in the eastern coast of Tanzania. The specific findings are therefore limited by the case boundaries, but the methodological process could be replicated and used elsewhere. The study’s contributions are theoretical and methodological, but also social and practice‐centred. The study brings into view the need to consider the contextual relevance of adapted knowledge, the capacity or ability of beneficiaries to adapt and apply scientific models, frameworks or tools, and the potential of local knowledge as an input for enhancing or improving monitoring of mangroves and mangrove‐based fisheries. Finally, the study comes up with a framework of indicators which is regarded by the coastal communities involved in the study as being less reified, more contextually and culturally congruent, and which may potentially be used in detecting environmental trends, threats, changes and conditions of mangrove and fisheries resources, and attract wider social learning processes.

In Karagwe district in northwest Tanzania, the non-governmental organisation Mavuno is working with water scarcity and drinking-water quality issues within the local community. Mavuno started a boarding school for girls in Chonyonyo village in the district in January 2016. The school is self-sufficient of water and relies on rainwater as a raw water source. The main objective of this study was to investigate water purification with a biosand filter, built of local materials at the Chonyonyo school. The filter performance was analysed by studying the reduction of indicator organisms in the filtered water. The knowledge obtained should be transferred to employees at Mavuno, allowing them to independently operate the biosand filter and analyse the water quality. The study was done as a Minor field study with support from SIDA, in collaboration with Swedish Engineers without borders and Mavuno. The study includes a literature review and a field study where a biosand filter was built and tested. After construction, the biosand filter was operated for 6 weeks during which water samples were collected and analysed. Water samples were collected from the influent raw rainwater and effluent filtered water. The microbial properties of the water samples were investigated by analysis of the indicator organisms total coliform bacteria, e.coli and enterococci. The analysis was performed with the QuantiTray-2000® and most probable number (MPN) method from IDEXX Laboratories. Additionally, temperature and pH was measured on all water samples. The water quality of the samples was compared to Swedish, Tanzanian and WHO guideline values. The water quality analysis showed that the raw water in the rainwater tank at Chonyonyo school did not have safe drinking-water quality with regards to the levels of total coliform bacteria and enterococci. The pH in the rainwater tank was high (mean value 10.1) and did not meet the Tanzanian standards for drinking-water, while it was satisfactory according to Swedish standards. The quality of the filtered water improved over time, which is believed to be linked to the ripening of the biolayer. During week 5-6 the levels of indicator organisms declined to a satisfactory level for drinking water according to Swedish guideline values for household scale water supply, but did not meet Tanzanian standards. This indicates that the ripening time for the biolayer was approximately 5 weeks. Power cuts interrupted three incubations of samples during week 5-6. If the concerned samples were excluded, the mean values of indicator organisms in the samples remain satisfactory. The pH in the filtered water decreased to an acceptable level (pH 9.5) according to Swedish, but not Tanzanian, standards for drinking-water. This study concluded that the biosand filter can reduce levels of indicator organisms in the filtered water. Employees at Mavuno were able to operate the biosand filter and laboratory equipment independently at the end of the field study. The biosand filter can be part of a drinking-water treatment chain but should be coupled with additional disinfection, safe storage and regular microbial analysis to ensure a continued safe drinking-water quality.
biosand filter, water purification, Tanzania, Karagwe

Partnership, the pre-eminent buzzword of the last two decades, is still very much the mantra in development cooperation discourse, at least in the North, as we begin the new millennium. This posthoc retrospective study is an insider's account of personal experience in participating and observing the development of Tanzania's Education Sector Development Program over a one-year period in 1998--1999. The study interrogates the workings of Donor-Government partnerships within this setting in an attempt to unravel the realities on the ground in their relationships and how the power asymmetry between these principal actors and their concomitant behaviour served to subvert the effectiveness and sustainability of the partnership.
This study in development anthropology is scaffolded by the epistemic orientation of postmodern theories. The approaches adopted for constructing and telling the stories that are narrated are borrowed from the interpretive anthropology of Clifford Geertz and the postmodern anthropology of James Clifford. Looking back and recollecting and reconstructing events required the generation of enabling memories, for which the memory-work method was adapted and used.
The study reveals that the hegemonic rituals that characterized development interventions in Tanzania bordered more on patronage than on partnership. Partnership was very much valued in principle by all parties but when the chips were down, it seemed ownership and trust, two key concepts undergirding partnership, were casualties in the complex dance of cooperation that the contending parties engaged in. They dealt with each other politely but suspicion and mistrust were mutual at the level of Donor-Government and in situ Centre-Periphery relationships.
A modest proposal is advanced for understanding the broader context of a Donor-Government relationship; it attempts to relate operational and policy horizontality to include a more vertical consultative process involving civil society at large, particularly affected communities, NGOs and the private sector as a means of engendering a more effective and sustainable partnership between donors and recipient1 countries.
1The normative perspective in particular on North-South relations rejects recipient as an appropriate descriptive term for a developing country receiving aid. For them, it connotes a superiority complex embedded in a language of welfarism. Throughout this thesis, I use recipient simply to convey a brutal reality: development assistance involves an element of charity and in the North-South relationship, generally, one party gives and the other receives , with the giver in a much stronger position to lay down conditions for the aid being offered.

The success of international business depends on effective negotiations. Such negotiations do no happen in a vacuum, but usually in a specific environment that includes; time, surrounding, place, culture and people. The business environmental setting includes legal and political pluralism, currency fluctuations, foreign exchange, foreign government controls, bureaucracy, instability, change, ideological and cultural differences, as well as the influence of external stakeholders. These business negotiations environments can influence the behaviour of negotiation in global firms, impacting firms internationally. The reasons to negotiate on an international level may include considerations such as: choice of venue, culture to observe; and the outcome of the negotiation process. The aim of this study was to determine the influence of the international marketing environment, awareness of negotiation skill, interest groups and negotiation atmosphere on behaviour of marketers in a global firm. The study assessed the impact of negotiation behaviour on business agreements based on trust and certainty and level of commitment. The purpose of the study was to gauge the impact of negotiations behaviour pertaining to failure of business negotiations in Tanzania. In addition, the study endeavoured to determine the impact of environmental variables on the negotiation behaviour of marketers. The questionnaires used in the study comprised seven variables with statements linked to a five-point Likert-type interval scale varying from “strongly agree” to “strongly disagree. Self-administered questionnaires were used for data collection from global firms’ marketers and their management representatives; 323 questionnaires were collected from respondents. This study contributed to the literature on negotiation behaviour in a global firm and the perceptions of such global marketers in Tanzania. Many international companies in Tanzania find it difficult to formulate and implement a comprehensive business strategy; therefore, this study intends to equip international business managers with the leadership skills required. Based on the findings of this study, the negotiators and government are expected to play a major role in business negotiations to promote effective trade agreements despite limitations of political influence in the negotiation process. Political stability in a country enhances foreign business which in turn improves negotiation behaviour. A just legal system, with clear and unambiguous business guidelines and policies would benefit and promote local businesses and government representatives and negotiators in respect of international business negotiation behaviour. Reasonable tax and interest rates and fair business policies should improve international trade negotiations and business practices. In order to conduct successful international negotiations aspects such as culture, language differences, customs and traditions are important and should enjoy high priority. Aspects such as these mentioned influence the conducting and atmosphere and outcome of negotiations. The study reveals that the use of specialists and interpreters are imperative to guarantee understanding and successful outcomes. According to the findings negotiators should possess good negotiating skills to be able to steer the negotiation process through the different phases of negotiation that requires different negotiating skills at each stage of negotiation. It is clear that to have successful win-win negotiation outcomes the leading negotiator should put together a good team, with expert knowledge of product or conditions and negotiating skill, as well as possessing the attributes mentioned in the previous paragraph. The negotiator should also be able to determine authority limits, patience and observe negotiation ethics. No team disagreements concerning the business/project matters should be aired in front of counterparts during negotiations and professional conduct must prevail at all times. The findings of the study indicated that awareness of the practice of offering concessions regarding government tariff laws and price discounts that is in line with traditions in Tanzania. Concessions should not be made until all issues have been discussed, to avoid granting unnecessary benefits during negotiation that might be interpreted as bribery. This study concluded that it is important that marketers meet the requirements of business practices by sharing clear guidelines and policies regarding business practices, as this will lead to fruitful decisions. It was also found that negotiation behaviour improves when negotiators are willing to share information and agree that all communication must be in writing; marketers are more comfortable when there is a clear understanding of matters agreed upon, the choice of trading partners and that all trading agreements are written and a contract signed by all the parties, including governments where necessary. Marketers’ intentions are derived from the common interests of both parties and the negotiations should always take place in avenue that is suitable to both parties, conducted in fairness and offers must be reasonable and attainable with a positive outcome as the ultimate aim for both parties. This study reveals that negotiators insist on the use an agent or agents and sub-contractors to ensure mutually beneficial strategic business partnerships. However, when the role of the interest groups is explained to all participants, negotiation behaviour improves. It can also be concluded that negotiators allow interest groups to participate as team leaders and their number should be equal to the number of foreign negotiators, to ensure that marketers feel more at ease and comfortable to participate. An atmosphere based on bargaining power exerts a positive influence on the level of commitment among negotiating partners; and can be a predictor of the range of agreement as well as shape limits and priorities among dimensions of rivalry. However, it is important for marketers to express willingness to accept the terms of their counterpart’s bargaining zone regardless of non-profitable quotas at stake; identify areas of bargaining from foreign traders even if they are not attractive enough for local traders and are comfortable with the counterparts’ bargaining zone regarding fixed rates on exporting and importing quotas between trading partners to build trust among negotiators. In conclusion, it was found that negotiation behaviour has a positive influence on the level of commitment of trading partners. A positive business relationship is created on trust and a high-level of commitment which should be of great satisfaction to negotiating parties for future prospective negotiations.

Insecticide-treated nets (ITN) are an effective tool to reduce the burden of malaria in Africa. To address questions concerning the sustained impact of ITN in the face of changing transmission intensity and spreading insecticide resistance a series of four entomological investigations was undertaken in Tanzania.
First, a longitudinal survey of vector populations at different altitudes was conducted in the Hai District, Kilimanjaro Region, Tanzania. Entomological parameters relevant to malaria transmission were measured. Vector densities and entomological inoculation rates decreased dramatically with increasing altitude. Seasonal variations in the host preference and resting behaviour of Anopheles arabiensismay influence malaria transmission and control.
Second, the insecticide susceptibility status of vector populations from agricultural sites in the Kilimanjaro Region was evaluated. Malaria vectors from six sites were highly susceptible to diagnostic concentrations of pyrethroid insecticides and DDT in susceptibility tests. Permethrin tolerance in populations of An. arabiensis from an irrigated rice-growing area was not directly related to agricultural use of insecticides. Synergist bioassays indicated the contribution of a metabolic oxidase-based mechanism to the observed resistance while the knockdown resistance (kdr) mechanism was not detected. Close monitoring of resistance development in this area is needed.
Third, the biological efficacy of ITN and the insecticide susceptibility status of mosquito populations from areas with long-term use of ITN were investigated. Data were compiled from national surveys and long-term ITN projects to examine trends in resistance development in Tanzania. Anopheles species were highly susceptible to ITN and diagnostic concentrations of pyrethroid insecticides, while 'nuisance-biting' Culex quinquefasciatus displayed low susceptibility to these compounds. Low efficacy of ITN against C. quinquefasciatus has implications for user acceptance of ITN.
Finally, a novel method for kdr genotyping was developed and evaluated. Sequence specific oligonucleotide probes (SSOP) were used to identify kdr mutations in Anopheles gambiae s.l. in a high-throughput enzyme-linked immunosorbent assay (ELISA) format. Evaluation of the method on field-collected specimens detected the leucine-phenylalanine kdr mutation in two individual An. arabiensis, raising implications for the geographic spread of kdr-based resistance. The novel SSOP-ELISA method is a useful tool for high-throughput screening allowing sensitive detection of insecticide resistance.

This study analyses how readers impute credibility to the Tanzanian investigative newspaper Raia Mwema which, as a matter of routine journalistic practice, uses a high number of anonymous sources. Against the backdrop of a strong theoretical position, espoused by media studies theorists in both Western media contexts and in Africa, in which this practice is deemed to diminish the credibility of both journalists and their stories, the study’s main purpose is to examine how readers make sense of this very prevalent practice in a country that has recently opened up to media plurality. It also investigates where they locate the source of credibility for this high-selling newspaper, if not in the traditional way through its named sources of information. The study surveys the frequency of appearance of anonymous sources in this newspaper for the period of one year from January 2011 to December 2011. Then the study considered how this practice is viewed and understood by the wider journalistic community in Tanzania as well as looking into how the journalists and owners of Raia Mwema make choices about attributing their journalism. Lastly, the study engaged with particular readers to understand what sense they make of this practice in the wider landscape of Tanzanian media and the post-repressive political situation. The study makes use of theories of the sociology of news production so as to understand the context in which Raia Mwema has routinised the practice of anonymous attribution and whether the journalistic community and newspaper readers find the practice credible. The study also employs reception analysis in order to understand to what extent Raia Mwema readers negotiate and make sense of the mainly political, and often critical, media messages they get from newspaper. In this way, it introduces the importance of the reader in the production of meaning and of assessment of credibility of journalism. The interviews – ranging from journalists working at the paper, through the wider journalistic community and taking in the readership of the paper – show that theoretical considerations of journalistic credibility must take into account the political, social and media context in which journalism is produced. Pronouncements on the overuse of anonymous sources, without understanding the way readers and journalists negotiate the complexities of an actual situation, do not tell us much about credibility and how readers understand the messages they are given. From this study, it is clear that in African countries embarking on opening media systems, credibility involves more factors than have been discussed in the literature and that readers and journalists are sophisticated consumers and producers of media messages in countries that place a host of obstacles in the way of investigative journalism and open political communication.

In Tanzania, fiscal adjustment policies emphasized an increase in tax revenue and cuts in public spending to correct the fiscal deficit. However, adjustment policies restricted the impact of fiscal policies in correcting fiscal deficit because they led to a low GDP growth and narrowed the tax base. The government overlooked the need to have an alternative tax base that could compensate for the fall in GDP growth. In that respect, the main purpose of this study is to examine the impact of fiscal adjustment policies in correcting the fiscal deficit in Tanzania in different adjustment periods in the 1973-2000 period. The thesis adopts a country study approach to analyse the effect of changes in the tax structure on the fiscal position using the primary balance as a proxy. The study also uses time series econometric methods to examine the impact of economic policy regime changes on public spending and GDP growth and the implications for fiscal policy in Tanzania. The study finds that changes in macroeconomic conditions either temporarily expanded or narrowed the tax bases and influenced the correction of the fiscal deficit in different years. Fiscal adjustment policies were pro-cyclical, thus leading to low GDP growth. This limited the effect of changes in the tax structure in reducing the fiscal deficit. Lastly, policy regime changes led to public spending instability and a structural break in the GDP data series. This signified that economic policy reforms caused fundamental changes in the economy, with implications for macroeconomic and fiscal policies in Tanzania. In sum, the results suggest that pro-cyclical policies are harmful for countries pursuing fiscal adjustment policies to correct a fiscal deficit.

Parrotfish are a critical component of the herbivore functional group on tropical coral reefs around the world because they mediate competition that occurs between algae and scleractinian corals. Also, because of their feeding technique, which consists of rasping at the substratum with their beak-like teeth, they play an important role in carbonate turnover and the clearing of reef surface area for the settlement of new sessile organisms. Because of these roles, parrotfishes are an important structuring component of coral reef communities. However, individual species can play different roles depending on their physiology, behaviour and ecology. Despite the possible ecological differences that may exist amongst species, specific roles of the fishes remain unclear as the group is most often studied at higher community levels. This thesis applied stable isotope analysis to differing levels of organisation within a parrotfish community to help elucidate their trophic ecology on coral reefs in Zanzibar. Firstly, blood and muscle tissues were compared to identify differences in their isotope signatures. In other organisms, blood turns over faster than muscle tissue so that muscle tissue represents the diet as integrated over a longer period of time. In most species of parrotfish the blood and muscle δ¹³C signatures were not found to be significantly different, but the δ¹⁵N signatures were significantly different between tissues. This indicated that the δ¹³C signature of both tissues would reveal similar dietary information. Conversely, differences in the δ¹⁵N signature indicated that the nitrogen relationship between tissues was more complicated. Secondly, spatial variability in parrotfish, coral, detritus and macroalgae isotope signatures was assessed at different scales. In macroalgae and coral tissues (zooxanthellae and polyp treated separately), the δ¹³C signatures were shown to differ with depth, presumably because of changes in photosynthetic processes related to depth-associated changes in light. While δ¹⁵N signatures were not affected by depth, all organisms showed enrichment at the Nyange reef, the closest reef to the capital of Zanzibar, Stone Town, presumably reflecting the effects of sewage outfall. These results show that processes that impact the δ¹⁵N signatures of primary producers (macroalgae and zooxanthellae) can be traced to higher trophic levels (coral polyps and fish). Lastly, δ¹³C and δ¹⁵N signatures were used to identify ontogenetic dietary changes in multiple species of parrotfish. Four of the species showed stages that varied from the diets that are normally assumed on the basis of their dentition and feeding technique. This indicates that functional roles based on taxonomy or morphology may fail to include possible ontogenetic dietary changes, and may also fail to elucidate the full impact a species could have on coral reef communities. The conclusions from these studies indicate that the species-specific ecological role of parrotfish in coral reef communities can be complex within and between species, and may differ amongst reefs. In light of the natural and anthropogenic pressures that affect coral reef systems, management decisions based on a more complete understanding of the role of these fish in coral reef communities will help decisions that maintain resilience in these fragile systems.

Le rift Est africain (REA) est une frontière de plaque en extension. Ce rift présente plusieurs stades d’extension, de l’initiation du rift en Tanzanie jusqu’à l’accrétion océanique en Afar. Le bassin de Manyara se situe le plus au sud de branche Est du REA. Il est caractérisé par la présence de volcanisme récent (< 1,5 Ma) et d’un essaim sismique dans la croûte inférieure (20 – 40 km). De par sa localisation et son contexte tectonique, le bassin de Manyara offre l’opportunité d’étudier le stade le plus précoce de l’initiation du rift. Le bassin de Manyara est composé de plusieurs types de laves hyperalcalines, les néphélinites magnésiennes (Mg# > 55) (Labait, Kwaraha), de calciocarbonatite (Kwaraha) et des néphélinites différenciées (Mg# < 35) (Hanang).Les néphélinites magnésiennes (Labait et Kwaraha) sont des laves primaires composées d’olivines et de clinopyroxènes (cpx). La modélisation géochimique des éléments en trace suggère que ces magmas primaires résultent d'un degré de fusion partielle ≤ 1 % à partir d'une péridotite à grenat et phlogopite. Ces magmas proviennent d’une profondeur > 120 km (présence de xénolites avec des conditions d’équilibre > 4 GPa). Les minéraux ont cristallisés à partir d’un magma pauvre en eau (0,1 et 0,5 pds % H2O). La calciocarbonatite et les néphélinites différenciés sont issues des néphélinites magnésiennes par cristallisation fractionnée et processus d’immiscibilité. Les néphélinites du Hanang sont riches en éléments alcalins (9,5 – 12,1 pds % Na2O+K2O) et en silice (44,2 – 46,7 pds% SiO2) et sont composés de cpx, grenat, néphéline, titanite et apatite. La zonation complexe dans les cpx (par exemple, changement brusque de Mg#, Nb/Ta, et H2O) implique une différenciation magmatique en système ouvert avec immiscibilité de liquide carbonaté et silicaté ainsi qu’un remplissage de la chambre magmatique avec des liquides primaires. La faible teneur en eau des cpx (3 – 25 ppm H2O) indique la présence d’un magma pauvre en eau (0,3 pds % H2O) lors de la cristallisation des cpx à des conditions crustales (340 – 640 MPa et 1050 – 1100 °C). L’étude des inclusions vitreuses dans les néphélines de Hanang permet de contraindre l'évolution magmatique tardive des néphélinites et le comportement des éléments volatils (CO2, H2O, S, F, Cl) lors du stockage et de la remontée du magma. Les inclusions vitreuses sont composées d’un verre trachytique, d’une phase carbonatée et d’une bulle de rétraction. Le verre trachytique contient du CO2 (0,43 pds % CO2, analyses SIMS), du soufre (0,21 à 0,92 pds% S), du chlore (0,28 – 0,84 pds % Cl) et très peu d’H2O (< 0,1 pds % H2O, analyses Raman). Le processus d’immiscibilité conduisant à la formation du carbonate se produit dans un système fermé pendant l'ascension rapide du magma, entre 200 – 500 MPa. La phase carbonatée est un carbonate anhydre et riche en Ca-Na-K-S (33 pds % CaO, 20 pds % Na2O, 3 pds % K2O, et 3 pds % S). Le liquide pré-immiscible a une composition phonolitique avec 6 ± 1,5 pds % CO2 à une pression de 700 MPa. Une étude préliminaire des inclusions par spectroscopie XANES et des roches par spectroscopie Mössbauer a permis de déterminer que les laves de Manyara se sont formées à conditions oxydantes (~ ∆FMQ +1,5).À l’initiation du rift, le volcanisme dans le bassin de Manyara est caractérisé par des magmas riches en CO2 et pauvres en H2O issus d’au moins 120 km de profondeur sous l'escarpement du rift. La présence de ces magmas riches en CO2 et la faible quantité de roches volcaniques émises à la surface peuvent indiquer que le piégeage et la percolation de ces magmas en profondeur est un déclencheur potentiel des essaims sismiques profonds
East African Rift (EAR) is the divergent plate boundary. EAR exposes different stages of extension, from early stage rifting in Tanzania to oceanic accretion in Afar (Ethiopia). Manyara basin is the southernmost rift system of the east branch of EAR with recent volcanism (< 1.5 Ma) and a seismic swarm in the lower crust (20 – 40 km). Due to its location and tectonic setting, the Manyara basin offers the opportunity to study the earliest stage of rift initiation. Manyara volcanism is composed of several types of hyper-alkaline lavas as Mg-nephelinites (Mg# > 55) (Labait, Kwaraha), calciocarbonatite (Kwaraha) and evolved nephelinites (Mg# < 35) (Hanang).Mg-nephelinites (Labait and Kwaraha) are primary lavas mainly composed of olivine and clinopyroxene (cpx). Geochemical modelling from trace elements suggests that these primary magmas result from a degree of partial melting < 1 % from a CO2-garnet-phlogopite-bearing peridotite. These magmas have an asthenospheric source at depth > 120 km (lava carries xenoliths with equilibrium conditions > 4 GPa). The minerals were crystallized from a magma with a low H2O content (0.1 and 0.5 wt% H2O). The calciocarbonatite and evolved nephelinites are derived from Mg-nephelinites by fractional crystallization and immiscibility processes. Hanang nephelinites are silica- and alkaline-rich lavas (44.2 – 46.7 wt % SiO2, 9.5 –12.1 wt % Na2O+K2O, respectively) composed by cpx, Ti-garnet, nepheline, apatite and titanite. Complex zonation of cpx (e.g. abrupt change of Mg#, Nb/Ta, and H2O) and trace element patterns of nephelinites record magmatic differentiation involving open system with carbonate-silicate immiscibility and primary melt replenishment. The low H2O content of cpx (3 – 25 ppm wt. H2O) indicates that at least 0.3 wt % H2O was present at depth during carbonate-rich nephelinite crystallization at 340 – 640 MPa and 1050 – 1100 °C. The study of hosted-nepheline melt inclusions from Hanang allows constraining the late magmatic evolution of nephelinites during storage and magma ascent. Melt inclusions are composed by a silicate trachytic glass, a carbonate phase and a shrinkage bubble. Trachytic glass contains high content in CO2 (0.43 wt %, SIMS analyses), sulfur (0.21 – 0.92 wt % S), chlorine (0.28 –0.84 wt % Cl) and H2O low content (< 0.1 wt %, Raman analyses). Immiscibility process leading to the formation of carbonate occurs in a closed system during rapid magma ascent between 200 – 500 MPa. The carbonate phase is a Ca-Na-K-S-rich and anhydrous carbonate (33 wt % CaO, 20 wt % Na2O, 3 wt % K2O, and 3 wt % S). The pre-immiscible liquid has a phonolitic composition with 6 ± 1.5 wt % CO2 at 700 MPa. A preliminary study of melt inclusions by XANES spectroscopy and whole rocks by Mössbauer spectroscopy was used to determine these Manyara lavas were formed at oxidizing conditions (~ ΔFMQ +1.5).The early stage rifting volcanism (Manyara Basin) is characterized by CO2-rich and H2O-poor magmas from at least 120 km below the rift escarpment. The presence of CO2-rich magmas and the small amount of volcanic rocks erupted at the surface may indicate that the storage and percolation of these magmas at depth is a potential trigger for deep seismic swarms

This study which focusses on a coastal Swahili society, examines the economic, political and social evolution of the Tangan Muslim community through the various phases of its history. The study pays specific attention to the role played by religious leaders, whether as competitors, or simply as madrasa teachers in a community with a tradition of Islamic scholarship. At the macro-level, the relationship between various Muslim organizations and the state also receives our scrutiny. This is done through analysis of the educational system and its structuring of the social order. Finally, we assess the views of the Tangan religious leadership regarding religion and society against a general discussion of intra-religious issues and political developments in the country, thereby achieving a better understanding of Islam in contemporary Tanzania.

Thesis (MTech (Construction Management))--Cape Peninsula University of Technology, 2005
Labour based technology (LBT) is a strategy popularised by intemationa I organisations such as International Labour Organisation (lLO), United Nations Development Progranune (UNDP) and Word Bank, to address poverty, unemployment and infrastructure provision especially in informal urban settlements. More emphasis has been placed on using the LBT approach in sub-Saharan countries where unprecedented urbanisation is taking place leading to the formation of informal settlements, high levels of unemployment as well as poverty. The LBT approach has been implemented in many developing countries including Dar es Salaam in Tanzania. However, there is little available evidence on the long-term impact of LBT on poverty alleviation and employment creation opportunities. This study examined whether the labour-based approach to delivering infrastructure in informal settlements had impacted poverty alleviation and created sustainable employment opportunities. The study had five main objectives namely (I) To explore the situation of infrastructure in Oar es salaam informal settlements; (2) To eXlmine LBT with respect to the nature and characteristics of the various forms used in practice to understand the advantages and disadvantages of each form; (3) To identify the nature of LBT approaches used to upgrade informal settlements; (4) To explore the extent to which LBT in infrastructure provision can contribute to creating employment and alleviating poverty; and (5) To examine the extent of private sector involvement and community participation in present LBT approach in the three settlements. Literature was reviewed on using LBT approach to deliver infrastructure in informal settlements and its impact on poverty alleviation and creation of sustainable employment opportunities. The residents within the Hanna Nassif, Mabatini and Tabata informal settlements in Oar es Salaam Tanzania, were interviewed who participated in infrastructure provision projects. Semi-structured interviews were held with the community based organisations (CBOs), and local government authorities in the respective settlements. The study suggests that the LBT approach to deliver infrastructure in informal settlements has the potential to create large-scale employment opportunities as well as alleviate poverty. However, the extent of the effectiveness of the LBT approach to create large-scale employment and alleviate poverty is dependant on several factors such as the type of the project; duration of the project; the level of the wages paid, and the measure of skills transferred

The Batemi are an agropastoral group who inhabit a semi-arid area in Northwestern Tanzania. The group lives a traditional subsistence lifestyle and are therefore dependent on the resources that surround them. This study: (1) investigates their use of woody vegetation; (2) studies the abundance and distribution of woody vegetation in the area; and (3) experiments with assigning use values to species and with employing these use values to identify conservation priorities. The Batemi utilize over 100 woody species, in 37 families' and 58 genera, from the environment surrounding their villages for construction, fuel, implements, services, food and medicine. Random sampling and systematic inventories in the valley showed that the most abundant species are Croton dictygamous and Acacia tortilis. Land cover in the area can be classed into three main vegetation types using a polythetic divisive program, TWINSPAN and these types are linked to three habitat types: hillside, plain and riverine. A landcover map for the area was produced from Landsat TM digital data. Based on density of woody vegetation, four categories were chosen for the final map product: thicket, woodland, wooded grassland, and grassland. To establish conservation priorities, use values are assigned based on importance of a use, number of species that can fulfill that use, and the rate of consumption. These values, when compared to abundance, provide a framework for considering conservation priorities. Based on various methods, Acacia mellifera and Haplocoelum folioosum are identified as two species that may require special attention.

Introduktion: På grund av extremt hög fattigdom har de orala hälsofrågorna haft låg prioritet i Tanzania. Vid en konferens 2004 i Nairobi om den orala hälsan i Afrika ställde sig Tanzania, tillsammans med andra Afrikanska länder, bakom det gemensamma beslutet att hållbara nationella program måste utvecklas för att främja oral hälsa. Detta beslut har varit en drivkraft till att delta i och utveckla nedanstående projekt avseende munhälsofrämjande insatser. Endast ett fåtal studier finns redovisade vad gäller prevalensen av karies, gingivit och dental fluoros bland barn i Tanzania.Syfte: Syftet var att kartlägga antal tänder samt förekomst av karies, gingivit, dental fluoros samt munhygienvanor bland barn i Nkinga English Medium School och Nkinga Public School i Nkinga, Tanzania.Metod: Studien är en epidemiologisk tvärsnittstudie och bestod av klinisk undersökning av 244 skolbarn på 2 olika skolor. Undersökningen avslutades med tre muntliga frågor om munhygienvanor. Resultat: I medeltal hade eleverna 1,1 karierade tandytor (ds/DS) och 62,3 % av eleverna var kariesfria. Medeltalet tandytor med gingivit uppgick till 46,2 % och för plack till 51,5 %. Åttiofem procent av eleverna hade ingen eller mildare grad av dental fluoros. Förekomsten av svårare grad av dental fluoros var 15 %. Nio av tio elever borstade tänderna och av dessa använde 74 % tandkräm.Slutsats: Tandhälsan hos skolbarnen i Nkinga var ur kariologisk synpunkt allmänt god medan förekomsten av gingivit och plack var relativt hög. Studien visade att en bättre förebyggande tandvård behövs i Nkinga för att förbättra tandhälsan och egenvårdsvanorna hos skolbarnen.                                              

Irony is a widely used device which plays a large role not only in conversation, but also has impacts on our daily thoughts. In literature, the device of irony has been used in the past and it is still being used by writers today so that readers can think deeply on the presented topic and understand the message and the intended concept. Wamitila (2008: 409) finds that irony is among the many devices which facilitate our conversations, mostly with its capability of indirectly revealing our hidden feelings, views and perspectives. According to Mbatiah (2001: 27) irony is a concept used in speech which can cause a painful realization. This article discusses the methodologies and different strategies applied in the use of irony within Kiswahili literature. The main argument within the article is that irony can cause the reader to indirectly recognize a deeper meaning within the text. The basic assertion in this article is to highlight how irony has played a large role within Kiswahili literature before independence, after independence, within the Arusha Declaration, and up until this time of globalization
Kejeli ni mbinu pana, ambayo huchukua nafasi kubwa na kutoa mchango wake si katika mazungumzo tu bali pia katika utoaji wa awazo yetu ya kila siku. Katika fasihi, mbinu ya kejeli imetumiwa na inaendelea kutumiwa na waandishi ili kuiwezesha hadhira/wasomaji wafikirie kwa undani suala linaloongelewa ili waweze kupata ujumbe uliokusudiwa kufikishwa kwao. Wamitila (2008: 409) anasema kuwa, kejeli ni mojawapo ya mbinu zinazotawala maongezi yetu hasa kutokana na uwezo wake wa kuficha hisia, maoni na mitazamo yetu sahihi. Kwa maoni ya Mbatiah (2001: 27), kejeli ni maneno yanayotumiwa katika matamshi kama hayo huwa ni ya kuchoma, kukata na kutia uchungu. Makala haya yanajadili kwa kina njia na mbinu mbalimbali zilizotumika katika kutumia kejeli katika fasihi ya Kiswahili. Mbinu inayoongoza makala ni ile inayoitambua kejeli katika hali ambapo kuna kinyume na Fulani katika usemi, hali au tukio. Suala la msingi katika makala haya ni kuonyesha jinsi mbinu ya kejeli ilivyooneshwa katika Kiswahili kuanzia kabla ya uhuru, baada ya uhuru, azimio la Arusha hadi wakati huu wa utandawazi kumeisaidia kwa kiasi gani jamii ya Kitanzania

Provision of an understanding of the complexes and implications associated with building performance measurement in relation to supporting the organizational objectives by Tanzania facility managers. The study involved the use of questionnaire sent to both public and private organizations and literature reviews in Tanzania with the aim of developing the process associated with the assessment of building performance and the way to improve its operational processes. The study observed that BPM practices are affected by managers control over the buildings facilites because there are no specific procedures that guide the formation of BPM process due to lack of Government attention to this growing industry. The other major finding of the study is that managers concentrate mostly on the financial performance instead of the operational performance of the building, which was contrary to the expectation of this study.

This is a study of the politics of public policy. It provides analysis of land policy and a study of policy making and of the Tanzanian state. Rather than deducing the state's agenda from its actions and the policies it produces, this thesis seeks to examine the interactions between the significant factions and personae of the Tanzanian political and administrative elites. This approach goes beyond identifying the divisions within the state between the Party leadership, the technocrats within the Government, and the Presidency. The thesis demonstrates how the ways in which conflicts are resolved, or deferred, and compromises are reached can lead to outcomes which do not necessarily constitute the sum of identifiable interests. In particular, a 'hidden level of government' is uncovered which consists of a technocratic elite which has, to a large extent, managed to depoliticise otherwise sensitive and controversial policy decisions and thus impose their stamp on policy outcomes. This approach to the analysis of rural land policies reveals the continuities in the state's approach to land issues. Since the colonial period, the objective of Tanzania's land policies has been to transform the countryside from the presumed inefficiencies of the 'traditional' modes of land use to fit the needs of a 'modern' and monetised economy. The modernising policies have provided the rationale for an authoritarian approach to land tenure and have been implemented by a centralised land administration. This thesis' historical analysis of the policies associated with the period of ujamaa and villagisation, and of the case studies of the 1983 Agricultural Policy and the 1995 National Land Policy, show that a modernising discourse and centralising administrative practices have remained at the centre of the policy agenda, despite dramatic changes in economic strategies and political institutions, and controversies over the future direction of land policies. The resulting land tenure regime relies on discretionary decision making by politicians and land officials and fails to provide workable procedures of checks and controls against malpractice. This study's detailed examination of the formulation of the National Land Policy reveals how a small elite of senior civil servants were able to hijack the policy making process and side-step political pressure for reform. They ignored, or appropriated selectively, the evidence and recommendations produced by comprehensive policy reviews, including the 1992 Presidential Commission of Inquiry, to maintain their direction of land policy while failing to address the evident shortcomings of the existing land policy regime.

This study addresses three distinct but interrelated areas in the micro insurance sector in Tanzania a) demand perspectives of micro insurance in the informal sector b) examining strengths and weakness of current risk coping strategies in the informal sector c) examining household’s characteristics that influence demand for micro insurance. The study analyses data from a primary survey and focus group discussion derived from informal sector households’ members of the VIBINDO society in three districts of Ilala, Kinondoni and Temeke in Dar es Salaam. The analysis involves three steps; first, household’s major risk exposures were analysed, secondly risk coping strategies which were in place were examined and thirdly, a probit regression analysis was conducted to establish the relationship between households’ characteristics and demand for micro insurance in the informal sector. There are three major findings from this study: Firstly, the results indicate that employment, marital status, use of financial services, education, risk exposure and insurance knowledge are significant determinants of micro-insurance demand. Insurance knowledge and trust of insurers were found to have a positive and significant impact on the demand for micro insurance. Contrary to expectations, the empirical analysis shows that income is a significant determinant with a negative impact on micro insurance demand. Secondly, the findings suggest that demand for micro insurance in the informal sector depends on the competitive advantage between formal insurance services and available informal techniques. Informal techniques have important informational advantages due to their close physical proximity and frequent, repeated interactions. This implies that some inferences can be drawn from the design and development of micro insurance. The analysis highlights different approaches to be taken by insurers in designing micro insurance products. Thirdly, there is evidence to suggest that pre-existing informal sharing networks affect demand for micro insurance. The low demand for micro insurance can be explained by available informal arrangements which are characterized by closely knit social networks and groups that provide security in exchange for loyalty to the group. Also, uncertainty avoidance culture is low within the households in Tanzania, hence households seem to be more tolerate to different situations. The findings recommend strategies for micro insurance expansion in the informal sector, which is therefore useful for the expansion of financial services.

Irony is a widely used device which plays a large role not only in conversation, but also has impacts on our daily thoughts. In literature, the device of irony has been used in the past and it is still being used by writers today so that readers can think deeply on the presented topic and understand the message and the intended concept. Wamitila (2008: 409) finds that irony is among the many devices which facilitate our conversations, mostly with its capability of indirectly revealing our hidden feelings, views and perspectives. According to Mbatiah (2001: 27) irony is a concept used in speech which can cause a painful realization. This article discusses the methodologies and different strategies applied in the use of irony within Kiswahili literature. The main argument within the article is that irony can cause the reader to indirectly recognize a deeper meaning within the text. The basic assertion in this article is to highlight how irony has played a large role within Kiswahili literature before independence, after independence, within the Arusha Declaration, and up until this time of globalization.
Kejeli ni mbinu pana, ambayo huchukua nafasi kubwa na kutoa mchango wake si katika mazungumzo tu bali pia katika utoaji wa awazo yetu ya kila siku. Katika fasihi, mbinu ya kejeli imetumiwa na inaendelea kutumiwa na waandishi ili kuiwezesha hadhira/wasomaji wafikirie kwa undani suala linaloongelewa ili waweze kupata ujumbe uliokusudiwa kufikishwa kwao. Wamitila (2008: 409) anasema kuwa, kejeli ni mojawapo ya mbinu zinazotawala maongezi yetu hasa kutokana na uwezo wake wa kuficha hisia, maoni na mitazamo yetu sahihi. Kwa maoni ya Mbatiah (2001: 27), kejeli ni maneno yanayotumiwa katika matamshi kama hayo huwa ni ya kuchoma, kukata na kutia uchungu. Makala haya yanajadili kwa kina njia na mbinu mbalimbali zilizotumika katika kutumia kejeli katika fasihi ya Kiswahili. Mbinu inayoongoza makala ni ile inayoitambua kejeli katika hali ambapo kuna kinyume na Fulani katika usemi, hali au tukio. Suala la msingi katika makala haya ni kuonyesha jinsi mbinu ya kejeli ilivyooneshwa katika Kiswahili kuanzia kabla ya uhuru, baada ya uhuru, azimio la Arusha hadi wakati huu wa utandawazi kumeisaidia kwa kiasi gani jamii ya Kitanzania.

Background: Current malaria control tools, long lasting insecticidal nets and indoor residual spraying have had a significant impact on malaria transmission in sub-Saharan Africa. However these tools will not be able to eradicate malaria and there is need for complementary tools if this goal is to be attained. This work focused on evaluating and recommending tools that can be used to complement current control tools with emphasis on outdoor and early evening transmission. The main tool evaluated in this thesis was a topical repellent to be used in the early evening. Other tools recommended were spatial repellents and permethrin- impregnated clothing. Methods: A repellent efficacy trial was conducted in the semi-field and field setting to evaluate the protection from early evening biting given by a topical repellent lotion containing 15% N.N-diethyl-m-toluamide (DEET). A cluster randomized, placebo controlled clinical trial, designed to assess the effect of 15% DEET against malaria transmitted in the early evening was then conducted in a village in rural Tanzania. A total of 940 households were recruited and randomized, with 462 households randomized to the intervention arm and 462 households randomized to the control arm. The feasibility of lotion repellent use was assessed using entry and exit questionnaires. Focus group discussions were conducted 3 years after a clinical trial to assess the community knowledge, attitude and practice towards a different set of repellents to those used during the clinical trial. A systematic review was then conducted to put the results of this trial in context with other repellent trials. An attempt was made to design a clinical trial taking into account the shortcomings of the current and other repellent trials reviewed. Findings: Topical repellents containing 15% DEET provided >80% protection against early evening biting over four hours. According to protocol analysis of the cluster randomized trial found no difference between the intervention and control arms after accounting for socio-economic status, education of household head and household construction materials (Wilcoxon rank sum z = 0.529, p = 0.596). The most important predictor of malaria in this study was age, with younger age categories significantly associated with greater malaria risk. Socio-economic status was not associated with malaria. Compliance to repellent use was reported to be 80% during the study. From the FGDs, it emerged that community knowledge was the major barrier to repellent use, followed closely with availability. The community preferred using long lasting insecticidal nets (LLINs) because of their cost effectiveness. However, the community preferred using repellents in the early evening before employing LLINs. Interpretation: This study demonstrates that topical repellents have no effect against early evening malaria transmission in this community. However, shortcomings in the design and implementation might have masked the treatment effect and better-designed studies are required to establish repellents effect in this setting. Topical repellents provided protection against early evening biting and were readily accepted and used in this community, indicating the potential of using repellents complimentary to LLINs in this setting. The short-term duration of effect of this repellent, required frequent reapplication and therefore impacted compliance, emphasizing that future studies should consider using longer lasting tools such as spatial repellents.

This thesis is made of three self-contained essays on the agricultural sector of Tanzania, each of them focusing on an aspect of direct policy relevance. In the first essay, I study whether an inverse relationship exists between cultivated area and physical productivity (yield per acre) for a set of important annual crops. I define size as the area of a plot on which a crop is grown, thus introducing a more disaggregated level of analysis than the common plot or crop levels of analysis. I control for the existing hypotheses in the literature potentially explaining this inverse relationship and propose to control for two new hypotheses which are only testable at this level of analysis. In the second essay, I look at output marketing for a set of important crops. I stress the links between the market failure theoretical narrative and empirical applications, and argue this has resulted in less attention being paid to the reasons why farmers may enter -or not- the market for a particular crop. I estimate participation and supply equations for a set of important crops and show that the rationale for entry differs across crops. This calls for a more flexible conception of `the market'. The first two essays use the Tanzanian National Panel Surveys to conduct econometric analysis. The third essay is based on primary data collected in 2016 in order to carry analysis of the Bambara nut, an underutilised crop. Because underutilised crops hardly feature in national datasets, primary data is needed to understand their socio-economic dynamics. Focusing on the Mtwara region of Tanzania, I study the importance of Bambara for local livelihoods using a mixed-methods study based on both quantitative and qualitative data. This study contributes to the growing interest on underutilised crops and their importance in designing more sustainable agricultural strategies.

A new genus and five new species of fossil cichlid fishes (Perciformes: Labroidei) are described from Mahenge, Tanzania. These cichlids represent the oldest confirmed fossils of the family, dating from the middle of the Eocene. The specimens share many lepidological characters, and, from comparison with other members of the family, are identified as being a monophyletic group. Therefore, they are described as belonging to a single genus, Mahengechromis gen. nov., named for the type locality. Detailed anatomical study of the well-preserved specimens allows five species to be identified, M. plethos, M. rotundus, M. brachycranium , M. ellipticus, and M. curvifrons spp. nov. These species are distinguished on the basis of osteological characters, including the shape of the frontal bones, hyomandibulae and opercular bones. The species are believed to be endemic to the type locality, which, along with monophyly of the species, indicates that these fishes formed a species flock. This suggests that the capacity for cichlids to form species flocks arose early in the family's history.
Previously published phylogenetic analyses of the family Cichlidae have included few characters that can be used to incorporate fossil material. Osteological features that may be useful for determining relationships are identified and used in a phylogenetic analysis of the family. The results of this analysis are compared with the results of previous analyses to determine the usefulness of the characters. This comparison indicates that most osteological characters are homoplastic among cichlids, although some of the characters may prove to be phylogenetically useful. Although phylogenetic analysis of osteologic characters does not result in a well-resolved phylogeny, the most parsimonious placement of the fossil cichlids from Mahenge is in a relatively basal position among the African lineages, as the sister group to the hemichromine cichlids from West Africa.
The biogeographic relationships of members of the Cichlidae are examined based on information from the fossil record and the interrelationships of the lineages within the family. Two suggestions have been made for the age of the family; either the cichlids originated in the Early Cretaceous or they evolved near the end of the Mesozoic. The later time of origin would have required a trans-Atlantic dispersal. Based on the distribution of Recent and fossil cichlids, the latter hypothesis is accepted. A reconstruction of the dispersal patterns and possible means of dispersal are evaluated.

Tropical African forests are thought to be declining due to human activity, resulting in serious threat to local communities and wildlife. The threatened status of populations of Juniperus procera and Olea africana was studied in Loliondo, Tanzania. Three hundred persons were interviewed in ten Maasai communities concerning tree utilization for fence and house construction, firewood, traditional medicine and gourd sterilization. By comparing the indices for 169 species, J. procera and O. africana usage was significantly higher than all other species (Kruskal-Wallis, chi2 = 15.3, DF = 2, p = 0.0005). Ninety-six percent of interviewees have witnessed local decline in J. procera and O. africana. In conjunction with interviews, ecological sampling was carried out in community forests to determine species status. The correlations of size class distributions are not typical of "healthy" plant populations. If current trends continue local extinction of J. procera and O. africana may occur.

Theatre for Development (TfD) is a process whereby the community uses theatre, especially African traditional theatre forms, to address their development issues. In Tanzania, TfD came as a result of many factors; poor communication approaches used by the state in addressing development in the late 1970s, the economic crisis of the 1970s, the implementation of IMF and World Bank pressure to adopt Structural Adjustment Programs (SAPs) among others. Liberal policies imposed mostly from Euro-America proposed non-governmental organizations (NGOs) to replace the state in addressing development, as they were perceived to be more democratic and less authoritative. Most of the supported activities of NGOs became those linked to development or that are in the position to bring about development in the fields of health, sanitation, education, gender, and democracy. Therefore, even theatre that was supported by donors was linked to or addressed ‘development’. In most cases, funding institutions have their own objectives, missions, and goals to fulfil. This paper tries to question the role of TfD in present Tanzania. It argues that, since most of the TfD projects have been funded by foreign donors and communities have no economic control of their own development concerns, it is clear that TfD is playing a double deal, community empowerment on the one hand and disempowerment on the other.

Female participation in all spheres of society is crucial in the development of a nation. One way of increasing this participation is through education in the formal system because it provides more opportunities in a modernizing society. This study presents the situation of women in education in the context of Tanzania, which has developed policies geared towards equality at all levels of society. Tanzanian educational policies have attempted to equalize opportunities for everyone regardless of race, gender and social class. A few of those policies have succeeded in reducing gender imbalances without however changing attitudes towards women's potential in the development of the nation. This study attempts to demonstrate that educational policies affect female participation in a positive manner but essentially in quantity. In the context of Tanzania, quality in education had not been a priority as much as the commitment to mass education. Therefore, female education has evolved at a lower quality than male education, thus affecting outcome in terms of opportunity. Quality education and opportunity for women will only be possible if the school, family, community and all societal institutions join in a comprehensive effort to break barriers which now prevent their full participation.