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2001

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Assessment Of Heavy Metal Pollution In The Lupa Gold Field, Sw Tanzania, S. R. Mnali Dec 2001

Assessment Of Heavy Metal Pollution In The Lupa Gold Field, Sw Tanzania, S. R. Mnali

Tanzania Journal of Science

The concentrations of AS, Cd, Cr, Cu, Hg and Pb were determined in water, stream sediments, soil, and mine tailings from Lupa Gold Field (LGF), SW Tanzania, in order to assess their pollution levels. As, Cd and Cr were determined by automated Graphite Furnace Absorption Spectrophotometry. Cu and Pb were analysed by Air-Acetylene Flame, while Hg was analysed by Cold Vapour Atomic Absorption Spectrophotometry. The mean concentrations obtained were: As: 0.44 ppb (water), 1.2 ppm (sediments), 0.44 ppm (soil) and 5.2 ppm (tailings); Cd: 0.03 ppb (water), 0.03 ppm (sediments), 0.03 ppm (soil) and 0.50 ppm (tailings); Cr: 1.4 ppb …

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Tectonic Setting And Uplift Analysis Of The Pangani Rift Basin In Northern Tanzania Using Apatite Fission Track Thermochronology, E. I. Mbede Dec 2001

Tectonic Setting And Uplift Analysis Of The Pangani Rift Basin In Northern Tanzania Using Apatite Fission Track Thermochronology, E. I. Mbede

Tanzania Journal of Science

Thirty four new Apatite Fission Track (AFT) ages and 32 track length distributions from samples of basement rocks flanking the Pangani rift, East African Rift System (EARS) are presented, in an attempt to elucidate the uplift and erosion of the rift flanks. The ages fall in the range of 207±15 to 48±4 Ma, spanning from Early Jurassic to Early Tertiary. These ages are much younger than the last termal event in the Mozambique belt that form the basement complex and are interpreted to represent the most recent tectonic events. Track length (TL) distributions suggest that uplift and erosion of the …

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Sources And Diagenetic Alteration Of Organic Matter In Coastal Waters At The Vicinity Of Dar Es Salaam, Tanzania, Ann Muzuka Dec 2001

Sources And Diagenetic Alteration Of Organic Matter In Coastal Waters At The Vicinity Of Dar Es Salaam, Tanzania, Ann Muzuka

Tanzania Journal of Science

The stable isotope compositions of organic carbon (OC) and nitrogen, contents of OC and nitrogen, and C/N ratios for four short cores, which were recovered from Msansani Bay (WO 57), off Msimbazi River (WO 76) and Dar es Salaam harbour (WO 62 and WO 74), are used to document temporal variation in the sources and diagenetic alteration of organic matter (OM). The δ15N and δ13C values at sites WO 57, WO 62 and WO 74 show a trend of down-core decrease to the base of the core, and such a down-core trend could be related to diagenetic loss of compounds …

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The Occurrence Of Digenean Larvae In Freshwater Snails At Mbezi-Temboni Pond, Dar Es Salaam, Esp Esp Kigadye, G. Nkwengulila Dec 2001

The Occurrence Of Digenean Larvae In Freshwater Snails At Mbezi-Temboni Pond, Dar Es Salaam, Esp Esp Kigadye, G. Nkwengulila

Tanzania Journal of Science

The abundance of digenean larvae in snails at a pond in Mbezi-Temboni, Dar es Salaam, was investigated from July 1996 to June 1997. A total of 2,112 snails belonging to three species, Bulinus globosus Morelet 1866, Bulinus forskalii Ehrenberg 1869, and Melanoides tuberculata Müller 1774 were examined, and 28 (1.3%) were found infected by four species of digenean trematodes. Trematodes were recovered only from Bulinus species; none of the examined M. tuberculata was infected. B. globosus was infected by Schistosoma haematobium Bilharz 1852 (1.14%), unidentified furcocercous cercariae (0.4%), and echinostome cercariae (0.76%). B. forskalii was infected by echinostome cercariae (0.25%) …

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Experimental Spat Collecting Of The Edible Oyster, Saccostrea Cucullata Born (Bivalvia) In The Kundichi Creek, Dar Es Salaam, Y. D. Mgaya Dec 2001

Experimental Spat Collecting Of The Edible Oyster, Saccostrea Cucullata Born (Bivalvia) In The Kundichi Creek, Dar Es Salaam, Y. D. Mgaya

Tanzania Journal of Science

A one year study was carried out at Kunduchi Creek, Dar es Salaam, to determine spat settlement using the three different substrates (clutches): coconut shells, asbestos and cockle shells, set at three different depths, 0.5 m, 1 m, and 1.5 m. The experiment was set up at three different sites within the creek. There were no significant differences among treatments (sites, depths, clutches). However, spat settlement exhibited seasonal differences, with peak spatfall recorded during the long rains (April to May). There were significant differences in the number of spat between the upper and lower surfaces of the substrates, with more …

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Development And Implementation Of Uniform Safety Standards For Inland Waterways Vessels And Non-Convention Craft In Africa : The Case Of The Southern African Development Community (Sadc), Tasiyana Wisdom Tengananwo Kamanga Dec 2001

Development And Implementation Of Uniform Safety Standards For Inland Waterways Vessels And Non-Convention Craft In Africa : The Case Of The Southern African Development Community (Sadc), Tasiyana Wisdom Tengananwo Kamanga

World Maritime University Dissertations

This dissertation focuses on the enhancement of maritime safety and environmental protection in the Southern African Development Community (SADC) through the development and implementation of uniform regional safety standards. The study looks at a multiplicity of issues to be considered to achieve the desired goal. A brief look is taken of the existing legislative framework and institutional arrangements in the region both in the dissertation and annexes. Initiatives being taken both at national level and regional level to address the problems will be analysed with emphasis on those taken at regional level. The study also looks at diverse issues of …

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The Emplacement Age Of Gabbroic Rocks And Associated Granitoids Of The Liganga-Msanyo Complex, South Eastern Tanzania, M. A. H. Maboko Dec 2001

The Emplacement Age Of Gabbroic Rocks And Associated Granitoids Of The Liganga-Msanyo Complex, South Eastern Tanzania, M. A. H. Maboko

Tanzania Journal of Science

The Msanyo Gabbro and the associated Mdando granitoids, which intrude Paleoproterozoic high-grade metamorphic rocks of the Ubendian Belt in southern Tanzania, yield imprecise Sm-Nd whole rock isochron ages of 1608±134 Ma (ε (Nd) = 2.1) and 1642±100 Ma (ε (Nd) = 1.6), respectively. These ages are indistinguishable at the 95% confidence level, indicating that the two rock suites were intruded at the same time. A more precise estimate of the time of emplacement is provided by a 5-point mineral isochron age of 1505±42 obtained from one of the gabbro samples. Calculated initial ε (Nd) values and mean crustal residence ages …

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The Daily Egyptian, November 19, 2001, Daily Egyptian Staff Nov 2001

The Daily Egyptian, November 19, 2001, Daily Egyptian Staff

November 2001

No abstract provided.

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Crossing Boundaries To Engage In Difficult Dialogues, Gertrude Edem, Joseph L. Mbele Oct 2001

Crossing Boundaries To Engage In Difficult Dialogues, Gertrude Edem, Joseph L. Mbele

Different Perspectives on Majority Rules: 6th Annual National Conference (2001)

We are two African scholars, from Nigeria and Tanzania, who have extensive experience in Canada and the United States. Issues such as race and color, which are so central to the lives of people in North America do not seem to matter to us as much. This often creates misunderstandings between us as Africans and the people of North America. In the United States, for example, we Africans find ourselves in a situation where there are categories ready made, such as "people of color" and we wonder whether those categories are supposed to apply to us. We wonder whether the …

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Mustang Daily, October 19, 2001 Oct 2001

Mustang Daily, October 19, 2001

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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October 9, 2001, The Daily Mississippian Oct 2001

October 9, 2001, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

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Mustang Daily, October 4, 2001 Oct 2001

Mustang Daily, October 4, 2001

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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Bard Free Press, Vol. 3, No. 2 (October 4, 2001), Bard College Oct 2001

Bard Free Press, Vol. 3, No. 2 (October 4, 2001), Bard College

Bard Free Press - All Issues (2000-2018)

No abstract provided.

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Cc: Connecticut College Magazine, Fall 2001, Connecticut College Oct 2001

Cc: Connecticut College Magazine, Fall 2001, Connecticut College

Alumni News/Connecticut College Magazine

No abstract provided.

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Islam: An Introduction And Bibliography, James A. Toronto, Cynthia Finlayson Oct 2001

Islam: An Introduction And Bibliography, James A. Toronto, Cynthia Finlayson

BYU Studies

Long before the events of September 11, 2001, BYU Studies began working on this special issue focusing on Islam. The authors and editors who worked on this issue have tried to capture the spirit of a religion that provides guidance to the lives of millions of people worldwide. The ever expanding influence of Islam extends to the prominent and often controversial role that Islam plays in contemporary politics. In addition, Muslim theology, scripture, art, science, and communal values have made significant contributions to world civilization. And in quiet yet significant ways, dialogue and contact between Latter-day Saints and Muslims have …

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Creating Spaces To Build Alternatives: The Growing Movement Against Water Privatization In Ghana, Sasha Wright Oct 2001

Creating Spaces To Build Alternatives: The Growing Movement Against Water Privatization In Ghana, Sasha Wright

African Diaspora ISPs

This paper examines the movement against water privatization. First I trace the development of social struggle in Ghana. I then outline the issues in the debate over water privatization. Finally I describe development in the movement against water privatization, and their significance.

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Focal Spot, Fall/Winter 2001 Oct 2001

Focal Spot, Fall/Winter 2001

Focal Spot All Issues

No abstract provided.

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Culture And Causality: Non-Western Systems Of Explanation, William M. O'Barr Oct 2001

Culture And Causality: Non-Western Systems Of Explanation, William M. O'Barr

Law and Contemporary Problems

The logic of some other systems of thought, explanation, and prediction are discussed, in order to find what can be learned about the sociocultural contexts and their functions in other cultures. The truths they may represent are about the human quest to understand causes and effects.

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Vol. 52, No. 1, September 18, 2001, University Of Michigan Law School Sep 2001

Vol. 52, No. 1, September 18, 2001, University Of Michigan Law School

Res Gestae

•'Til Tuesday •Human Spirit •In the Wake of the News •Apocalypse When •Never the Same Again •The Case for Rage and Retribution •Video Crop Anemic •The Insider •Crossword

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The Geochemistry Of Banded Iron Formations In The Sukumaland Greenstone Belt Of Geita, Northern Tanzania: Evidence For Mixing Of Hydrothermal And Clastic Sources Of The Chemical Elements, M A H Maboko Jul 2001

The Geochemistry Of Banded Iron Formations In The Sukumaland Greenstone Belt Of Geita, Northern Tanzania: Evidence For Mixing Of Hydrothermal And Clastic Sources Of The Chemical Elements, M A H Maboko

Tanzania Journal of Science

Major and trace element compositions of samples of Banded Iron Formations (BIF) from the Neoarchaean Sukumaland Greenstone Belt of Geita in northern Tanzania reveal that the BIF precipitated from hydrothermal solutions. Fe-Ti-Al-Mn systematics suggest that the hydrothermal deposits have been contaminated, by up to 20% by weight, with detrital material having a composition similar to modern deep-sea pelagic clays. SiO2 and Fe2O3 contents are 48.2 to 88.5% and 8.9 to 49.1% respectively. Al2O3 contents lie between 0.33 and 2.1% and show no correlation with either Fe2O3 or SiO2. Al2O3 is, however, positively correlated with Ti, Ga, Hf, Rb,Th, Zr and …

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Production Of Cell Wall Enzymes In Pepper Seedlings, Inoculated With Arbuscular Mycorrhiza Glomus Etunicatum, A C Odebode, A O Salami, O Osunubi Jul 2001

Production Of Cell Wall Enzymes In Pepper Seedlings, Inoculated With Arbuscular Mycorrhiza Glomus Etunicatum, A C Odebode, A O Salami, O Osunubi

Tanzania Journal of Science

Pepper seedlings inoculated with arbuscular mycorrhizal AM fungus, Glomus etunicatum, produced cellulase, polygal-acturonase and pectin methylestrase enzymes. The activities of the enzymes increased as the pepper seedlings matured in age, showing that the activity of the enzymes in the seedlings was age mediated. The pectinases showed higher activity than the cellulase enzyme which may indicate establishment of the mycorrhizal in the host. The significance of this finding is that there is an initial infectivity factor in (AM) fungi interactions with plant just like in other host-parasite interaction.

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Physicochemical Characteristics Of Some Locally Manufactured Edible Vegetable Oils Marketed In Dar Es Salaam, F N Ngassapa, O C Othman Jul 2001

Physicochemical Characteristics Of Some Locally Manufactured Edible Vegetable Oils Marketed In Dar Es Salaam, F N Ngassapa, O C Othman

Tanzania Journal of Science

The physicochemical properties (refractive index, saponification value, Free Fatty Acid (FFA) value, iodine value, acid value, peroxide value and tocopherol content) of seven edible vegetable oils manufactured in Tanzania, were assessed using standard procedures of the Association of Official Analytical Chemists (AOAC). Also determined were the levels of these properties with respect to shelf storage of the products. When compared with standard values recommended by the Codex Alimentarius Commission of FAO/WHO and with other published results, the locally produced vegetable oils were found to be of fair quality but of poor storage stability.

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Comparison Of Direct Return And Birth-Death Return Receivers, H N Kundaeli Jul 2001

Comparison Of Direct Return And Birth-Death Return Receivers, H N Kundaeli

Tanzania Journal of Science

The performance of frame synchronized communication systems is governed largely by the design chosen for the receiver. Some systems employ a structure in which the receiver returns directly to the sync phase when a valid marker is encountered while in the loss verify state. These have been greatly studied. In some systems, the return path in the loss verify phase is implemented as a birth-death process. These systems have not received much attention. In this report, a receiver which employs a birth-death like structure in the loss path is investigated. Expressions for the performance parameters are derived and compared with …

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Occurrence And Activity Budget Of The Leopard Tortoise, Geochelone Pardalis, In Northern Tanzania, J Kabigumila Jul 2001

Occurrence And Activity Budget Of The Leopard Tortoise, Geochelone Pardalis, In Northern Tanzania, J Kabigumila

Tanzania Journal of Science

Occurrence and activity budget of the leopard tortoise, Geochelone pardalis were studied in northern Tanzania between October 1993 and June 1996. Tortoises occurred most frequently in short grass (51.5%) and along roads and track verges (33.9%), but only occasionally in the bush undergrowth (6.7%) and shambas (3.6%). Walking (46.3%) and feeding (37.2%) were the most frequent activities. Resting was observed only occasionally (13.6%) while courtship (1.9%) and drinking (0.9%) were rarely recorded. Activity budget differed significantly between the age classes and habitats, but not between the sexes. Juveniles walked more frequently (59.3%) than other age classes. Walking was most frequent …

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Test Of The Additive-Dominance Model Of Grain Weight And Grain Uniformity Of Oat, Avena Sativa L, Genotypes, Sowm Reuben Jul 2001

Test Of The Additive-Dominance Model Of Grain Weight And Grain Uniformity Of Oat, Avena Sativa L, Genotypes, Sowm Reuben

Tanzania Journal of Science

An investigation of the genetic mechanisms controlling grain weights for the primary and secondary grains uniformity expressed in primary: secondary individual grain weight (P: S IGW) ratio and % tertiary grains produced was conducted using a backcross experiment'. Two oat, parental genotypes, I.L82-1657 (pistillate) and 10589 Cn (staminate) with different grain weight characteristics were hybridized to obtain 6 backcross generations viz. P1, P2, F1, B1, B2 and F2. The scaling test indicated that overall average, primary and secondary individual grain weights and % tertiary grain weight produced failed to satisfy the additive - dominance model and digenic interactions were detected …

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Production Of Biogas From Water Hyacinth: Effect Of Subtrate Concentration, Particle Size And Incubation Period, J H Y Katima Jul 2001

Production Of Biogas From Water Hyacinth: Effect Of Subtrate Concentration, Particle Size And Incubation Period, J H Y Katima

Tanzania Journal of Science

A study was conducted, at constant temperature, to determine the effect of substrate concentration, particle size and incubation time on biogas production from water hyacinth. Substrate concentration was varied between 5-30 g/l of water, particle size between <1 mm - 3 mm and incubation period between 1-6 days. The maximum methane prodction of 72.53% v/v at substrate concentration of 25 g/1 and particle size less than 1 mm for water hyacinth shoots was achieved after five days of incubation. However, for the whole water hyacinth plant, methane content was 65.67% v/v at the same conditions.

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Heavy Metals In Green Vegetables And Soils From Vegetable Gardens In Dar Es Salaam, Tanzania, O C Othman Jul 2001

Heavy Metals In Green Vegetables And Soils From Vegetable Gardens In Dar Es Salaam, Tanzania, O C Othman

Tanzania Journal of Science

Edible portions of five varieties of green vegetables, namely amaranth, chinese cabbage, cowpea leaves, leafy cabbage and pumpkin leaves, collected from several areas in Dar es Salaam, were analyzed for lead, cadmium, chromium, zinc, nickel and copper. Except for zinc, the levels of heavy metals in the vegetables grown at Tabata area were much higher than in the vegetables from Ukonga and Kiwalani. Amaranth and pumpkin leaves had more than 60% higher content of heavy metals, especially copper, chromium and lead, than the other vegetables. All vegetables from Tabata, Buguruni and Sinza had lead-levels higher then the FAO/WHO recommended permissible …

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Production Of Biogas From Water Hyacinth: Effect Of Substrate Loading In Semi-Batch & Batch Operations, J Katima Jun 2001

Production Of Biogas From Water Hyacinth: Effect Of Substrate Loading In Semi-Batch & Batch Operations, J Katima

Tanzania Journal of Engineering and Technology (TJET)

A study was carried out to establish the effect of substrate loading rate on the production of biogas from water hyacinth. The experiments revealed that the maximum methane yield in a batch process was 0.166 normal litre (NLVg Of volatile solids (VS) added at substrate concentration of 25 g dry mass'litre after five days of incubation. The maximum methane yield in a semi-batch process was 0.153 NWg VS added at 1.30 g VS'litre day and retention time Of 15 days.

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Baseflow Separation Based On Storage-Outflow Modelling Of Streamflow Recessions, With Application To Semi- Arid Catchments In Tanzania, S Mwakalila Jun 2001

Baseflow Separation Based On Storage-Outflow Modelling Of Streamflow Recessions, With Application To Semi- Arid Catchments In Tanzania, S Mwakalila

Tanzania Journal of Engineering and Technology (TJET)

Discharge in many rivers is Often fed by baseflow provided by drainage of the saturated zone in the shallow permeable soils. It is becoming clear that the outflow from this saturated zone is not linear proportional to storage as is commonly assumed in many algorithms. The objectives Of this study theretore, are first to explore the extent to which the assumption of linearity in storage-outflow relationships is valid and secondly to introduce an alternative approach to baseflow separation algorithms for estimating direct mnoff time series. Numerical analysis Of streamflow recessions from the semi-arid catchments of the Great Ruaha basin in …

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Recyclability Of Modified Ps-Aq Pulps At Around Kappa 30, Rwaichi Minja Jun 2001

Recyclability Of Modified Ps-Aq Pulps At Around Kappa 30, Rwaichi Minja

Tanzania Journal of Engineering and Technology (TJET)

Bleachable grade pulps prepared from Nonvegian softwood spruce chips while simulating possible alternatives of improving pulp yield by application Of polysulphide (PS) and anthraquinone (AQ) have been used in this study. The tests for recyclability were performed on hydrogen form pulps. The pulps considered were Iso- Thermal cooking (ITC) kraft pulp which was used as a reference pulp, conventional PS-AQ pulp, soda PS-AQ pulp and kraft PS-AQ pulp. The loss Of swelling ability (homification) Of the pulps, was determined by measurement of water retention value (W R V). The results showed that, PS-AQ pulps had similar or slightly better swelling …

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