929 research outputs found

    Performance of Smallholder Agriculture Under Limited Mechanization and the Fast Track Land Reform Program in Zimbabwe

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    agricultural mechanization, fast track land reform, agricultural development, Stochastic Frontier model, technical efficiency, agribusiness management, Agricultural and Food Policy, Community/Rural/Urban Development, International Development, Land Economics/Use, Resource /Energy Economics and Policy,

    Efficiency Effects Zimbabwe’s Agricultural Mechanization and Fast Track Land Reform Programme: A Stochastic Frontier Approach

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    A development goal pursued by the Zimbabwean government even before the much-maligned fast track land reform programme (FTLRP) was expansion of agricultural production through agricultural mechanization. This goal has been pursued through the acquisition and use of tractors by arable crop farmers in communal and resettlement state land delineated during the period following the launch of the FTLRP. This research project investigated the combined impacts of mechanization and an unplanned land reform on agricultural productivity in the Bindura district of Zimbabwe. The existing land policy and the issue of technical efficiency in agricultural productivity are assumed to be the drivers of the programme. It is likely that these issues will be important considerations in determining the sustainability of the mechanization policy. A multistage sampling technique was used to randomly select 90 farmers in the study area and structured questionnaires were used to collect demographic, investment and production data which were subsequently fitted by means of the Stochastic Frontier Model. Results revealed that mechanization was an important factor in the performance of the farmers who participated in the programme. The results also suggest that availability of land and access to production resources are crucial to farm productivity. Despite these, overall production and productivity remain low and the hyperinflationary situation triggered by supply constraints are only beginning to slightly ease. As the national unity government grapples with the huge task to restore growth in the Zimbabwean economy, it is important that these issues are borne in mind.Technical Constraints, Market Access, Agricultural Development, Induced Innovation Model, The Stochastic Frontier model, The Productive Efficiency and Mandate of Extension, Farm Management,

    Epidemiological Studies of Malaria Parasite on HIV Patients Attending General Hospital Awo-Omamma, Oru East, Imo State

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    HIV and malaria are the two most prevalent and deadly diseases in the world.  Malaria and HIV accounted for about 255 million cases in 2017, with malaria having 86% of this distribution and HIV having 14% of the distribution. Given the overlap of their geographic distribution and resultant rates of coinfection, interactions between the two diseases pose major public health problems. This study was aimed at investigating the epidemiology of malaria – HIV co-infection in respect to sex and age and its association with CD4+ count and viral load. 230 HIV sero-positive participants and 100 HIV sero-negative participants (control) were employed for this study. 52 (22.6%) of the HIV infected participants tested positive for malaria while only 9(9.0%) of the non-HIV participants tested positive to malaria. The prevalence of malarial infection in HIV positive individuals was shown to be higher in females (23.9%) compared to the prevalence for males (18.5%). In respect to age, the age group of 30-39 showed the highest prevalence (35.3%) of co-infection. A high prevalence of 47.7% was recorded in participants with CD4+ below 200 cells/ÎŒl compared to the prevalence of 7.6% in participants with CD4+ greater than 200 cells/ÎŒl. A high prevalence (49.2%) was also detected in patients with viral load of above 10,000 copies/ÎŒl compared to that of those with viral load less than 10,000 copies/ÎŒl (12.6%). The findings in this work show a high prevalence of malaria in HIV patients in Awo-Omamma, Oru East, Imo state. This should be considered a great concern to public health. Thus, more effort should be put in research to curb this health issue.&nbsp

    A DEFESA DANÇADA DE BILL RICHMOND

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    Resumo: Este artigo explora a ascensão de Bill Richmond, que se tornou o primeiro prizefighter norte-americano e astro negro do esporte na Inglaterra Regencial. No intuito de ir além de explicaçÔes raciais e sociológicas para o sucesso de Richmond, investigo um legado inexplorado de lutas herdado de Angola que floresceu entre as comunidades escravizadas do Atlùntico Negro. Estas tradiçÔes de combate podem ajudar a contextualizar as tåticas de esquiva de Richmond, as quais foram centrais em seu sucesso e legado no boxe.Palavras-Chave: boxe, Bill Richmond, Inglaterra Regencial BILL RICHMOND'S DANCED DEFENSEAbstract: This article explores the rise of Bill Richmond, who became the first American prizefighter and black sports star in Regency England. It moves beyond racial and sociological explanations for the success of Richmond by investigating an unexplored combative legacy inherited from Angola that thrived among the enslaved communities in Black Atlantic. These combat traditions may help to contextualize Richmond's evasion skills, which were at the center of his success and boxing legacy.Keywords: boxing, Bill Richmond, Regency Englan

    The Impact of ICT on Career Counseling Services: A case Study of Nigerian Secondary Schools

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    Information and communication technologies (ICT) will need to be fully integrated into the delivery of careers services as the world is now in the global era. Such integration would not only have the potential to achieve more but would also increase the flexibility of services and enhance their quality. Career choice is an  important  decision  a  person  needs  to  make  in  his  life  time.  Unfortunately, many young people find it uneasy to make appropriate career choice. The  paper  focused  on  the  usage  of  career  counseling  services  in  selected public secondary schools in Nigeria. It sought to find out how students and teachers utilize  career  counseling  services,  students’  expectations  in  career  counseling services  and  how  school  principals  support  career  counseling  services.  Simple random  sampling  was  used  to  select  380  from 34  public  secondary  schools  from  the  sample  population.  Four-point Likert scale questionnaires were used to obtain data for the study. The findings revealed that the students use career counseling services to take career decision and aspiration, gather career information and select and take subjects that match their career interest. Secondary school teachers use career counseling services to guide students to make appropriate subject choice that match their career interest and help them with their career challenges and plans. This paper recommends that career counselors should integrate use of ICT, through the use of chat rooms, email and social networking. In other words several choice of career could be show to the students on DVD and CD Video. They should also be exposed to TV and radio Chat on Career choice.DOI: http://dx.doi.org/10.11591/ijere.v1i1.70

    The search for mitochondrial tRNALeu(UUR) A3243G mutation among type 2 diabetes mellitus patients in the Nigerian population

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    The study aimed to compare the incidence of the pathogenic point mutation A3243G in the gene tRNALeu(UUR) indicating sub-type 2 diabetes mellitus conducted within the Nigerian population with that reported in other populations. 112 patients diagnosed with type 2 diabetes (T2D) mellitus according to the World Health Organization criteria were selected based on family history and re-evaluated for associated disorders from the diabetic clinics in the Northern part of Nigeria. The mtDNA of these patients was extracted and the tRNALeu(UUR) gene screened for A3243G by PCR-RFLP method. Probands with maternal history were further investigated for other mutations using PCR-sequencing methods. None of the 112 patients were found to carry the A3243G mutation in the mitochondrial tRNALeu(UUR) gene in the homoplasmic or in the heteroplasmic form. However, C3254T was identified in two of our patients. This mutation was reported to be associated with gestational diabetes and linked with population from sub-Saharan Africa. The A3243G mutation in mitochondrial tRNALeu(UUR) is not a frequent cause of maternal diabetes in the Nigerian population contrary to other reported populations. However, further screening of an enlarged selected study group is necessary to fully determine the prevalence of this mutation in this population. This further search will help to fully appreciate the prevalence of maternal inheritance and diabetic deafness (MIDD) as extensively reported in other populations.Key words: Maternal diabetes, mitochondrial gene, maternal Inheritance and diabetic deafness, Nigeria, sub-Saharan Africa

    Uropathogens isolated from HIV-infected patients from Limpopo Province, South Africa

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    The primary aim of this study was to determine the prevalence and antibiotic susceptibility profiles of uropathogens isolated from HIV-infected patients in Limpopo Province, South Africa. One hundred and ninety-five urine samples were obtained from HIV-infected patients between June 2008 and May 2009 and the samples were investigated using standard and conventional microbiological methods. Urinary tract infections (UTIs) were detected in 95 samples. Enterobacter species (37.6%) was the most prevalent uropathogen. Other bacterial isolates included Escherichia coli and Klebsiella species, each constituting 17.9%, Citrobacter species (9.7%), Proteus species (7.4%) and others (11.6%). Resistance to trimethoprim/sulfamethoxazole (SXT) which is used for empiric therapy was above 35%. However, majority of the isolates were susceptible to amikacin, ciprofloxacin and most of the second generation cephalosporins as well as imipenem. Resistance of uropathogens to SXT in Limpopo Province is higher than the recommended IDSA setting and this requires the introduction of an alternative first-line therapy.Keywords: Antibiotic resistance, HIV, uropathogens, urinary tract infection

    Understanding reservoir heterogeneity using variography and data analysis: an example from coastal swamp deposits, Niger Delta Basin (Nigeria)

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    For efficient reservoir management and long-term field development strategies, most geologists and asset managers pay special attention to reservoir chance of success. To minimise this uncertainty, a good understanding of reservoir presence and adequacy is required for better ranking of infill opportunities and optimal well placement. This can be quite challenging due to insufficient data and complexities that are typically associated with areas with compounded tectonostratigraphic framework. For the present paper, data analysis and variography were used firstly to examine possible geological factors that determine directions in which reservoirs show minimum heterogeneity for both discrete and continuous properties; secondly, to determine the maximum range and degree of variability of key reservoir petrophysical properties from the variogram, and thirdly, to highlight possible geological controls on reservoir distribution trends as well as areas with optimal reservoir quality. Discrete properties evaluated were lithology and genetic units, while continuous properties examined were porosity and net-to-gross (NtG). From the variogram analysis, the sandy lithology shows minimum heterogeneity in east-west (E–W) and north-south (N–S) directions, for Upper Shoreface Sands (USF) and Fluvial/Tidal Channel Sands (FCX/TCS), respectively. Porosity and NtG both show the least heterogeneity in the E–W axis for reservoirs belonging to both Upper Shoreface and Fluvial Channel environments with porosity showing a slightly higher range than NtG. The vertical ranges for both continuous properties did not show a clear trend. The Sequential Indicator Simulation (SIS) and Object modelling algorithm were used for modelling the discrete properties, while Sequential Gaussian Simulation (SGS) was used for modelling of the continuous properties. Results from this exercise show that depositional environment, sediment provenance, topographical slope, sub-regional structural trends, shoreline orientation and longshore currents, could have significant impacts on reservoir spatial distribution and property trends. This understanding could be applied in reservoir prediction and for generating stochastic estimates of petrophysical properties for nearby exploration assets of similar depositional environments

    Using Selected Structural Indices to Pinpoint the Field Moisture Capacity of Some Coarse-Textured Agricultural Soils in Southeastern Nigeria

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    Over- or underestimation of field capacity (FC) of agricultural soils could misguide soil and water management and this might have negative agronomic and environmental impacts. The study sought to identify the moisture tension for reliably estimating in the laboratory the FC of some sandy soils with low-activity clay minerals and at different levels of structure development in Nsukka agroecological zone in southeastern Nigeria. Fifty-four samples of topand subsoils under contrasting vegetation cover at three locations in the zone were analyzed for texture, organicmatter contents, bulk density and total porosity. Saturated hydraulic conductivities (Ksat) of the samples were equallydetermined. Water-conducting and water-filled porosities at each of 0.06-, 0.10- and 0.33-bar tensions were implied from water retention data at the respective tensions. The soils were categorized based on their levels of structure development using a structural stability index [(organic matter: silt+clay) %] as follows: very low (< 4%), low (4-7.5%) and moderate to high (> 7.5%) stability soils. Series of simple correlation tests were run among the waterconducting porosities at the various tensions and the Ksat of the soils. In each case, the soil was assumed to have attained FC at that moisture tension which the associated water-conducting porosity showed significant positive correlation with the Ksat. Our results revealed that the 0.06-bar tension overestimated the FC of the soils. The 0.10-bar tension, the commonly used moisture tension for the purpose in the study area, proved suitable only for soils within the moderate to high structural stability category. From all indications, the 0.33-bar tension best corresponded to the FC of the less structurally developed soils in the other two categories. The level of soil structure development should therefore be considered before deciding the suitable moisture tension for the determination of FC of these and similar soils in other tropical locations
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