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OALib Journal期刊

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Socio-Economic Characters and Activities of Support Zone Communities in Gashaka Gumti National Park  [PDF]
Zacharia Buba Yaduma, Joyrose Enebuse Adaeze, Mary Omowumi Oluwole, Bijida Zacharia
Open Access Library Journal (OALib Journal) , 2020, DOI: 10.4236/oalib.1106200
Abstract: The study was conducted at Gashaka Gumti National Park to determine socio-economic activities and their relationship with the forest. The Result obtained shows that, the age of the respondents was presented in Table 1. The pooled result indicated that there were 29.82%, for the age class of 36 - 45 years, 28.77%, for the age class of 26 - 35, 20.35%, for the age class of 15 - 25; 13.68%, for the age class of 46 - 55; and 7.37% for the age class of 56 years and above. The result on gender indicated that Males were 75.78%, while female was 24.21%, of the population. The result of marital status revealed that married respondents recorded 58.24%; singles had 29.82% while the widows recorded 11.93%. The results of the family size indicated that the family size of 10 - 14 recorded 37.54%; 5 - 9 family size had 22.46%; 15 - 19 recorded 20.70%; 1 - 4 had 11.23% while 20 and above recorded 8.07%. The result of occupation of the respondent indicated that farmers/grazers recorded 44.91%; business men/women were 18.59%; public servants recorded 14.74%, students were 12.98%, while house wives/widows recorded 8.77%. The educational qualification of the respondents revealed that non formal education recorded 37.89%, primary education recorded 21.40%, adult education, had 15.78%, and post primary education recorded 15.78% while tertiary education had 9.12%. The result of income level of the respondents revealed that N30,000 - N39,000 had 34.38%, N20,000 - N29,000 recorded 23.86%, N10,000 - N19,000, had 23.16%, N40,000 - N 49,000, had 10.88% and N50,000 and above recorded 7.72%. The research reviles that the greater are still in their early forties, but the level of education was lower among the population and which may be the result of the lower income among the population; of which it may have a negative impact on the survival of the forest and its biodiversity. Therefore, more income and better education may help in maintaining a balanced relationship between the population and its environs.
Quantifying Rooftop Rainwater Harvest Potential: Case of Mbeya University of Science and Technology in Mbeya Tanzania  [PDF]
Zacharia Katambara
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510098
Abstract:

The advantages that the rooftop rainwater harvesting system has as a source of water supply have been examined. The observed daily rainfall records of 10 years and the current total roof area of the facilities at Mbeya University of Science and Technology as the catchment area were used. Using a water balance model to determine the suitable water use that will cover 100% of the time, the model indicated that for the current roof area a water supply of 120 lts?per day can be met when a storage tank whose capacity is 13.5 m3 is installed. When values higher that 120 l/day are simulated a tank of higher capacity is required to meet the water demand. The study recommends on the necessity of installing rooftop rainwater harvesting system so as to increase the water supply reliability and reduction of cost. The selection of a suitable storage tank capacity should take into consideration the future development plans so as to reduce the construction cost of new storage tank.

Positioning Mbeya University of Science and Technology in Tanzania in the Systems of Innovation Perspective  [PDF]
Zacharia Katambara
Advances in Applied Sociology (AASoci) , 2014, DOI: 10.4236/aasoci.2014.41004
Abstract:


The chronological development of universities ranges from the state at which universities are considered to be knowledge accumulators followed by knowledge factories and finally the knowledge hubs. The various national systems of innovations are aligned with the knowledge hubs and it involves a substantial amount of research activities. The newly established Mbeya University of Science and Technology is recognised as a knowledge hub in some particular niches. However, there are a limited number of research activities conducted at the university and this study is an attempt to identify the reasons that limit research activities. Well-structured research questionnaires were designed and distributed to academic staff members and thereafter the respondents were analysed by using SPSS software package. The lack of knowledge, skills and funds as well as equipment was earmarked as the reason that hindered the research activities. Therefore, resources are required to improve the capabilities of the staff members and the study recommends on the need for deliberate efforts to improve the knowledge of the staff members with respect to research activities.


Developing a Web-based agricultural community information centre for rural farmers
Zacharia Letshela
South African Journal of Information Management , 2009, DOI: 10.4102/sajim.v1i2/3.51
Abstract: To follow
Estimation of Extreme Flows in Nkana River to Verify the Adequacy of Naming’ongo Bridge Waterway  [PDF]
Zacharia Katambara, Joseph J. Msambichaka, Joseph Mkisi
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.53040
Abstract:

The response by the government of Tanzania to food security and poverty alleviation in the Naming’ongo area in Mbozi District has been to develop Naming’ongo irrigation scheme as well as construct a bridge across River Nkana to connect the farms and other parts of the district to facilitate a reliable transportation of the produce to the market. The Australian Water Balance Model that was calibrated by using 10 years data from a nearby sub-catchment of Mbarali. The Naming’ongo Sub-catchment was delineated form a 30 m digital elevation model. The observed rainfall was obtained from Mbozi Meteorological station. The study approximated the peak flows in River Nkana for a return period of 50 years to be slightly above 560 m3/s. This was considered to be adequate for the proposed structure. The study recommends that when undertaking human activities such as deforestation and cultivation an account for soil and environmental conservation should be considered. While it is necessary to establish a monitoring system within the catchment, the designs of future hydraulic structures should incorporate stream flow measuring facilities.

Syngas Production and Losses Encountered in Gasification of Rice Husks  [PDF]
Ethel D. Kasembe, Zacharia M. Mganilwa, Zacharia M. Mganilwa, Geoffrey R. John, Cuthbert F. Mhilu
Journal of Power and Energy Engineering (JPEE) , 2015, DOI: 10.4236/jpee.2015.34057
Abstract:

This paper addresses the syngas production and evaluation losses in high temperature gasification process using coffee husks. A fast and inexpensive way to evaluate the losses in gasification processes is by the application mathematical models which allow to predict the values needed in full scale. Hence, the quantification of gasifier’s losses at temperatures ranges of 800 K - 1400 K at an equivalence ratios of 0.3, 0.35 and 0.4 at 1 bar are revealed by using exergy model incorporating a chemical equilibrium model. The model evaluated the product syngas compositions, syngas heating values and degree of irreversibility values (losses). The results from the model showed that the production of H2 increased from 9.9% to 18.9% and the formation of CO2 ranges from 7.2% to 12.3%. CO production is from 21.8% to 17.2%. The irreversibility values obtained were less than 27%. Hence, reduction of losses protracts biomass resources to be used in energy generation.

Abductor pollicis longus tendon division with swan neck thumb deformity
Balaji Zacharia,Kishore Puthezhath
Strategies in Trauma and Limb Reconstruction , 2012, DOI: 10.1007/s11751-012-0141-8
Abstract: Swan neck thumb deformity can be caused by osteoarthritis, rheumatoid arthritis, systemic lupus erythematosus, tendon transfers and paralytic diseases. Abductor pollicis longus is one of the major stabilizing tendon of the carpometacarpal joint of thumb. To the best of our knowledge, swan neck thumb deformity owing to division of abductor pollicis longus tendon is rare. In this article, we describe a case of isolated division of abductor pollicis longus tendon presenting with swan-neck deformity of thumb and discuss the mechanism, management and outcome. The patient was treated by repair of the divided tendon using palmaris longus tendon graft. At approximately 107 weeks following treatment, the patient was having full range of thumb movement and the deformity completely disappeared. We also describe the unusual mechanism whereby an isolated division of abductor pollicis longus tendon results in swan neck thumb deformity. Level of clinical evidence IV.
Searching for Neutrinos from WIMP Annihilations in the Galactic Stellar Disk
Zacharia Myers,Adi Nusser
Physics , 2008, DOI: 10.1111/j.1365-2966.2008.13366.x
Abstract: Weakly interacting massive particles (WIMPs) are a viable candidate for the relic abundance of dark matter (DM) produced in the early universe. So far WIMPs have eluded direct detection through interactions with baryonic matter. Neutrino emission from accumulated WIMP annihilations in the solar core has been proposed as a signature of DM, but has not yet been detected. These null results may be due to small scale DM density fluctuations in the halo with the density of our local region being lower than the average (around 0.3 GeV/cm^3 ). However, the accumulated neutrino signal from WIMP annihilations in the Galactic stellar disk would be insensitive to local density variations. Inside the disk, dark matter can be captured by stars causing an enhanced annihilation rate and therefore a potentially higher neutrino flux than what would be observed from elsewhere in the halo. We estimate a neutrino flux from the WIMP annihilations in the stellar disk to be enhanced by more than an order of magnitude compared to the neutrino fluxes from the halo. We offer a conservative estimate for this enhanced flux, based on the WIMP-nucleon cross-sections obtained from direct-detection experiments by assuming a density of around 0.3 GeV/cm^3 for the local DM. We also compare the detectability of these fluxes with a signal of diffuse high energy neutrinos produced in the Milky Way by the interaction of cosmic rays (CRs) with the interstellar medium (ISM). These comparative signals should be observable by large neutrino detectors.
A note on sheaves without self-extensions on the projective $n$-space
Dieter Happel,Dan Zacharia
Mathematics , 2012,
Abstract: Let ${\bf P}^n$ be the projective $n-$space over the complex numbers. In this note we show that an indecomposable rigid coherent sheaf on ${\bf P}^n$ has a trivial endomorphism algebra. This generalizes a result of Drezet for $n=2.$
Algebras of finite global dimension
Dieter Happel,Dan Zacharia
Mathematics , 2012,
Abstract: Let $\Lambda$ be a finite dimensional algebra over an algebraically closed field $k$. We survey some results on algebras of finite global dimension and address some open problems.
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