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Search Results: 1 - 10 of 145575 matches for " Buassa-bu-Tsumbu B "
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Nadir CD4+, religion, antiretroviral therapy, incidence of type 2 diabetes mellitus, and increasing rates of obesity among black Africans with HIV disease
Mandina Ndona M, Longo-Mbenza B, Wumba R, Tandu Umba B, Buassa-bu-Tsumbu B, Mbula Mambimbi M, Odio Wobin T, Mbungu Fuele S
International Journal of General Medicine , 2012, DOI: http://dx.doi.org/10.2147/IJGM.S32167
Abstract: dir CD4+, religion, antiretroviral therapy, incidence of type 2 diabetes mellitus, and increasing rates of obesity among black Africans with HIV disease Original Research (811) Total Article Views Authors: Mandina Ndona M, Longo-Mbenza B, Wumba R, Tandu Umba B, Buassa-bu-Tsumbu B, Mbula Mambimbi M, Odio Wobin T, Mbungu Fuele S Published Date November 2012 Volume 2012:5 Pages 983 - 990 DOI: http://dx.doi.org/10.2147/IJGM.S32167 Received: 24 March 2012 Accepted: 01 August 2012 Published: 23 November 2012 Madone Mandina Ndona,1 Benjamin Longo-Mbenza,2 Roger Wumba,3 Barthelemy Tandu Umba,4 Baudouin Buassa-bu-Tsumbu,5 Marcel Mbula Mambimbi,1 Thaddée Odio Wobin,1 Simon Mbungu Fuele6 1Department of Internal Medicine, University of Kinshasa, Kinshasa, Democratic Republic of Congo; 2Walter Sisulu University, Faculty of Health Sciences, Mthatha, Eastern Cape, South Africa; 3Tropical Medicine Department, Infectious and Parasitic Diseases, University Clinic of Kinshasa and University of Kinshasa, Kinshasa, Democratic Republic of Congo; 4Department of Gynecology, 5Department of Biochemistry, University of Kinshasa, Kinshasa, Democratic Republic of Congo; 6Biostatistics Unit of Lomo Medical Center and Heart of Africa Center of Cardiology, Kinshasa, Democratic Republic of Congo Background: The purpose of this study was to determine the cross-sectional association between some sociodemographic factors and antiretroviral therapy (ART), as well as the incidence and predictors of type 2 diabetes mellitus among Central Africans with human immunodeficiency virus (HIV) disease. Methods: This study had a cross-sectional design and was a prospective analysis of 102 patients with HIV disease (49 on ART versus 53 not on ART) in Kinshasa, Democratic Republic of Congo, between 2004 and 2008. A Cox regression model was used to assess for any relationship between type 2 diabetes and exposure to combination ART without protease inhibitors, after adjusting for known risk factors for type 2 diabetes, nadir CD4 and CD8 levels, viral load, marital status, and religion. Results: Unexpectedly elevated rates of smoking, excess alcohol intake, and ART-related total, abdominal, and peripheral obesity were observed in our study group of HIV patients. At the end of follow-up, five patients were diagnosed with type 2 diabetes (incidence rate 4.9%, 9.8 per 1000 person-years). Univariate risk factors for type 2 diabetes were male gender (relative risk [RR] 1.1, 95% confidence interval [CI] 1.01–1.4; P = 0.019), traditional religion versus new charismatic religion (RR 1.1, 95% CI 1.01–1.3; P = 0.046), exposure to ART (RR 1.1, 95% CI 1.002–1.3; P = 0.034), and single status (RR 6.2, 95% CI 1.5–15; P = 0.047). In multivariate analysis, strong significant independent predictors of type 2 diabetes were belonging to a traditional religion (HR 2.1, 95% CI 1.1–4.2; P = 0.036) and a relative increase in nadir CD4 cell count (beta coefficient 0.003; P < 0.0001). Conclusion: ART-related obesity and ty
Management & Marketing , 2012,
Abstract: As advertisements are broadcast on a daily basis, Romanian consumers are subject to an intensive media bombardment designed to influence them, trigger certain emotions, and make them develop an attitude to a particular brand or product. When designing the advertisement, great care must be taken so that it conveys positive feelings and emotions and fosters favourable attitudes to a brand. The object of the current research is to determine how consumers are able to assess the advertisement phenomenon in general and the TV commercials in particular. Based on a representative sample of 550 Romanian consumers from the urban population, the study highlights the Romanian consumers’ attitude to various types of advertisements, endorsers and creative strategies used to design and execute the advertisements. The managerial as well as the scientific implications are considered by means of the correlations made according to the respondents’ social and demographic characteristics.
Bülent A?bu?a
Pamukkale Journal of Sport Sciences , 2013,
Abstract: The purpose of this study is to determine the reliability and the validity of the Turkish version of the Constructivist Teaching Practices Inventory in Elementary Physical Education [CTPI-EPE] including Personal Relevance, Social Cooperation, and Games/Skills subscales. Participants consisted of 44 female, 66 male and totally 110 elementary school physical education school teachers in the central district of Denizli. In this study, the CTPI-EPE consisted of twenty-five items on a five-point rating scale.An examination of the factor loadings in Confirmatory factor analysis (CFA) revealed that 9 questionnaire items (4 in Games/Skills, 2 in Personal Relevance, and 3 in Social Cooperation) less than .40. Factor loadings, however, should be equal or larger than .40. Therefore, these items were removed. Finally, the CFA.results indicated therewere three factors represented in the data set. All indices [χ2/df = 1.513, CFI = .93, TLI = .91, RMSEA = .06; factor loadings (from .45 to .86)] represent an acceptable fit between the three-factor model and the data. Cronbach Alpha values were determined for whole scale 0.89, for Personal Relevance subscale 0.80, for Social Cooperation subscale 0.75, and for games/skills 0.81. Results of this study revealed that the Turkish version of the Constructivist Teaching Practices Inventory for Students fit the data well and demonstrated satisfactory psychometric properties. Given that reliability and validity analyses produced valid scores, this inventory is applicable to Turkish physical education teachers.
Growth and Leaf Area Index Simulation in Maize (Zea mays L.) Under Small-Scale Farm Conditions in a Sub-Saharan African Region  [PDF]
Jean-Claude Lukombo Lukeba, Roger Kizungu Vumilia, Kabwe C. K. Nkongolo, Mo?se Lufuluabo Mwabila, Mbungu Tsumbu
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.43075
Abstract: Different crop models including MAIZE Ceres, STICS and other approaches have been used to simulate leaf area index (LAI) in maize (Zea mays L.). These modeling tools require genotype-specific calibration procedures. Studies on modeling LAI dynamics under optimal growth conditions with yields close to the yield potential have remained scarce. In the present study, logistic and exponential approaches have been developed and evaluated for the simulation of LAI in maize in a savannah region of the DR-Congo. Data for the development and the evaluation of the model were collected manually by non-destructive method from small farmers’ field. The rate of expansion of the leaf surface and the rate of change of leaf senescence were also simulated. There were measurable variations among sites and varieties for the simulated height of maize plants. At all sites, the varieties with short plants were associated with expected superior performance based on simulation data. In general, the model underestimates the LAI based on observed values. LAI values for the genetically improved maize varieties (Salongo 2, MUS and AK) were greater than those of the unimproved local variety (Local). There were significant differences for K,
The effects of weathering demonstrated by maternal age on low birth weight outcome in babies
BU Ahmadu, B Mustapha, JI Bappariya, N Alfred, Z Joel
Ethiopian Journal of Health Sciences , 2013,
Abstract: BACKGROUND: Increasing age has been hypothesized with wear and tear (weathering) in mothers, which may result to low birthweight of their babies. The prevalence of low birthweight could be heightened if maternal weathering is associated with poor maternal socioeconomic variables. In this current study, we analyzed the effects of maternal weathering on babies’ birthweights. METHODS: One hundred and twenty four mother-baby pairs were selected using systematic random sampling method. Maternal age formed part of the demographic data that was obtained from the mothers’ case notes and from interviews held with them. Maternal socioeconomic variables were assessed using Oyedeji’s parameters and birthweights of babies were determined using bassinet weighing scale. Associations between maternal socioeconomic variables and birthweight of babies were assessed using univariate analysis. Differences in mean birthweight of babies according to their maternal age were evaluated using one-way analysis of variance ANOVA. RESULTS: Among the 124 babies, 66(53.2%) were males and 58(46.8%) females of whom the majority 104(83.9%, had normal birthweight. The mean birthweight of babies was 3.05±0.57 (95% CI, 2.95–3.15) kg, while the mean maternal age was 23.60 (5.2) 95% CI, (22.68–24.52) years. The difference between mean birthweight of babies and mean maternal age was not significant (F=1.35, p=0.255). Similarly, the association between birthweight, maternal education and occupation computed using univariate analysis was not significant (F=2.163, p=0.120) for education and (F=1.825, p=0.166) for occupation. CONCLUSION: In this study, maternal weathering was not found to be associated with LBW outcome. This implies that an increase in maternal age may not be significantly associated with LBW. However, there is need for further research on this subject from different centers using larger sample size in order to enhance the precision of the study. KEYWORDS: Mother-baby pairs, Maternal Weathering, Low birthweight, Maiduguri, Nigeria
Influence of catalyst (Yeast) on the Biomethanization of Selected Organic Waste Materials
BU Bagudo, SM Dangoggo, LG Hassan, B Garba
Nigerian Journal of Basic and Applied Sciences , 2010,
Abstract: Yeast catalyzed the rate of biomethanization of waste materials and rate at which it alter the reaction rate has been determined. It was observed that addition of yeast improved the quality and quantity of biogas generated and also fastened the acid and methane forming stages during biomethanization. The volumes of biogas in the catalyzed process was found to be 6550 cm3 for cow dung, 5640 cm3 for millet husk, 3240 cm3 for rice husk ,1000 cm3 for saw dust and 800 cm3 for the paper waste, as against 5430 cm3, 5230 cm3, 2110 cm3, 950 cm3 and 590 cm3 respectively for the uncatalyzed biomethanization process.
The nitrogen content management in the oxygen converter steelmaking
J. Kijac,R. Sladíková,B. Bu?ko,T. Borovsky
Metalurgija , 2012,
Abstract: The nitrogen belongs to elements which have significant impact in steel mechanical properties. The influences of individual elements on the properties of solution of nitrogen in the metal bath, on the process of nitrogen dissolution in connection with decarburisation process and also influences of some important factors on the possibilities of nitrogen regulation during the refining period were investigated in this work. The path for production of steel with regulated nitrogen content relies on the combination of knowledge of nitrogen thermodynamics, mechanism and kinetics of nitrogen sorption and desorption, together with possibilities of steel melt properties prediction and also with metallurgical actions leading to the control of required chemical composition.
Utilizing of the metallurgical slag for production of cementless concrete mixtures
D. Baricová,A. Pribulová,P. Demeter,B. Bu?ko
Metalurgija , 2012,
Abstract: In process of pig iron, steel and cast iron production besides main product, also secondary products are formed, that have character of secondary raw materials and industrial wastes. The most abundant secondary product originating in the metallurgical process is furnace slag. Total amount of accured slag, also its chemical, mineralogical, physical – chemical properties and similarity with natural stones predestinate its utilisation in different fields of industry. The contribution deals with production of cementless concrete mixtures, where the main parts were formed by blast furnace granulated slag grinded and different gravel slag from blast furnace, oxygen converter and electric arc furnace. As activators of solidification different kinds of water glass were tested.
Kinetics of the α-β phase transformation in seeded Si3N4 ceramics
Bu?evac D.,Bo?kovi? S.,Matovi? B.
Science of Sintering , 2008, DOI: 10.2298/sos0803263b
Abstract: The α-β phase transformation in Si3N4 was studied for seeded samples using an Y2O3-Al2O3 mixture as a sintering aid. The concentration of β-seeds varied from 0 to 5 wt.%. The results showed that α-β phase transformation followed the first-order reaction. The calculated activation energy for seeded samples was in the range from 348 to 378 KJ/mol, indicating boundary reaction as the rate limiting step.
Transport in T-shaped ballistic junction
M. Bek,B. R. Bu?ka,J. Wróbel
Physics , 2011,
Abstract: We present studies of ballistic transport in three terminal T-shaped junction in a linear and non-linear regime. The floating electrode acts as a scatterer and modifies the conductance in a direct channel (between source and drain electrode). In the low voltage limit, the conductance shows the Wigner threshold effect and the bend resistance. A specific shape of the Wigner singularities can be changed by applied voltage to the floating electrode as well as by a shift of the Fermi level. The system also exhibits filtering properties with current distribution between different modes propagating in the junction. Back action of current flowing in the direct channel on changes of the voltage in the floating electrode is considered in the non-linear regime.
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