Search Results - "Igumbor, E"

A systematic study of the stability, electronic and optical properties of beryllium and nitrogen co-doped graphene by Olaniyan, O., Maphasha, R.E., Madito, M.J., Khaleed, A.A., Igumbor, E., Manyala, N.

“…Ab-initio calculations within the framework of density functional theory (DFT) have been performed to study the stability, electronic and optical properties of…”
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Barrier height inhomogeneities on Pd/n-4H-SiC Schottky diodes in a wide temperature range by Gora, V.E., Auret, F.D., Danga, H.T., Tunhuma, S.M, Nyamhere, C., Igumbor, E., Chawanda, A

“…•Impact of palladium silicidation on barrier height inhomogeneity.•No correlation between electrically active defects and barrier inhomogeneities.•Limitation…”
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Rare Earth Interstitials in Ge: A Hybrid Density Functional Theory Study by Igumbor, E., Andrew, R. C., Meyer, W. E.

“…In this work, the results of density functional theory calculations for rare earth (Ce, Pr, Eu, and Er) interstitials in Ge are presented. We employed the…”
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Electronic properties and defect levels induced by group III substitution–interstitial complexes in Ge by Igumbor, E., Dongho-Nguimdo, G. M., Mapasha, R. E., Meyer, W. E.

“…In this report, we used the hybrid density functional theory to systematically investigate the formation of substitution–interstitial complex defects formed by…”
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Electronic properties of vacancies in bilayer graphane by Mapasha, R.E., Igumbor, E., Andriambelaza, N.F., Chetty, N.

“…We have performed the ab initio hybrid density functional theory (DFT) calculations to investigate the electronic structure of various neutral and charged…”
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Ab-initio study of the optical properties of beryllium-sulphur co-doped graphene by Olaniyan, O., Igumbor, E., Khaleed, A. A., Mirghni, A. A., Manyala, N.

“…Graphene is a carbon material with excellent properties, which makes it applicable in a myriad of applications. However, the range of the applications of…”
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Electrical characterisation of deep level defects created by bombarding the n-type 4H-SiC with 1.8 MeV protons by Omotoso, E., Paradzah, A.T., Janse van Rensburg, P.J., Legodi, M.J., Auret, F.D., Igumbor, E., Danga, H.T., Diale, M., Meyer, W.E.

“…We have characterised the deep level defects present before and after annealing the proton-irradiated Ni/nitrogen-doped 4H-SiC Schottky barrier diodes (SBDs)…”
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The influence of thermal annealing on the characteristics of Au/Ni Schottky contacts on n-type 4H-SiC by Omotoso, E., Auret, F. D., Igumbor, E., Tunhuma, S. M., Danga, H. T., Ngoepe, P. N. M., Taleatu, B. A., Meyer, W. E.

“…The effects of isochronal annealing on the electrical, morphological and structural characteristics of Au/Ni/4 H -SiC Schottky barrier diodes (SBDs) have been…”
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Electronic properties of B and Al doped graphane: A hybrid density functional study by Mapasha, R.E., Igumbor, E., Andriambelaza, N.F., Chetty, N.

“…Using a hybrid density functional theory approach parametrized by Heyd, Scuseria and Ernzerhof (HSE06 hybrid functional), we study the energetics, structural…”
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The effects of high-energy proton irradiation on the electrical characteristics of Au/Ni/4H-SiC Schottky barrier diodes by Omotoso, E., Meyer, W.E., van Rensburg, P.J. Janse, Igumbor, E., Tunhuma, S.M., Ngoepe, P.N.M., Danga, H.T., Auret, F.D.

“…Au/Ni (20:80) Schottky barrier diodes (SBDs) were resistively evaporated on nitrogen-doped n–type 4H-SiC. Current-voltage (I-V) and capacitance-voltage (C-V)…”
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Determination of capture barrier energy of the E-center in palladium Schottky barrier diodes of antimony-doped germanium by varying the pulse width by Omotoso, E, Paradzah, A T, Igumbor, E, Taleatu, B A, Meyer, W E, Auret, F D

“…The capture barrier energy of the E-center deep level defect introduced in Pd/Sb-doped Ge by alpha-particle irradiation has been studied. Palladium Schottky…”
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Ab‐initio study of germanium di-interstitial using a hybrid functional (HSE) by Igumbor, E., Ouma, C.N.M., Webb, G., Meyer, W.E.

“…In this work, we present ab‐initio calculation results of Ge di-interstitials (I2(Ge)) in the framework of the density functional theory (DFT) using the Heyd,…”
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Prediabetes and cardiovascular complications study (PACCS): international collaboration 4 years' summary and future direction by Nwose, E U, Richards, R S, Bwititi, P T, Igumbor, E O, Oshionwu, E J, Okolie, K, Onyia, I C, Pokhrel, A, Gyawali, P, Okuzor, J N, Oguoma, V M, Gardiner, F W, Wang, L

“…The prediabetes and cardiovascular complications studies proposes to develop a screening protocol for diabetes cardiovascular risk, and strategies for holistic…”
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Barriers in determining prevalence of type 2 diabetes mellitus among postpartum GDM: The research and retraining needs of healthcare professionals by Nwose, E.U., Mogbusiaghan, M., Bwititi, P.T., Adoh, G., Agofure, O., Igumbor, E.O.

“…A large percentage of gestational diabetes (GDM) are undiagnosed, and prevalence of postpartum type 2 diabetes (T2DM) is unknown, especially in developing…”
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Prevalence of Intestinal Parasitic and Bacterial Pathogens in Diarrhoeal and Non-diarroeal Human Stools from Vhembe District, South Africa by Samie, A., Guerrant, R.L., Barrett, L., Bessong, P.O., Igumbor, E.O., Obi, C.L.

“…In the present study, a cross-sectional survey of intestinal parasitic and bacterial infections in relation to diarrhoea in Vhembe district and the…”
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Development of public health program for type 1 diabetes in a university community: preliminary evaluation of behavioural change wheel by Nwose, Ezekiel Uba, Digban, K A, Anyasodor, A E, Bwititi, P T, Richards, R S, Igumbor, E O

“…Diabetes mellitus, including type 1 is a global public health problem among the young persons. While public health campaign and screening program is a…”
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Prevalence and temporal distribution of Schistosoma haematobium infections in the Vhembe district, Limpopo Province, South Africa by Samie, A, Nchachi, D J, Obi, CL, Igumbor, E O

“…The aim of the present study iwas to determine the trend, current prevalence and contributing risk factors of Schistosoma haematobium infections in the Vhembe…”
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Prevalence, Haemolytic and Haemagglutination Activities and Antibiotic Susceptibility Profiles of Campylobacter spp. Isolated from Human Diarrhoeal Stools in Vhembe District, South Africa by Samie, A., Ramalivhana, J., Igumbor, E.O., Obi, C.L.

“…Campylobacter species are increasingly being recognized as agents of gastroenteritis worldwide. However, data on the pathogenic characteristics of the organism…”
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Prevalence, Pathogenesis, Antibiotic Susceptibility Profiles, and In-vitro Activity of Selected Medicinal Plants Against Aeromonas Isolates from Stool Samples of Patients in the Venda Region of South Africa by Obi, C.L., Ramalivhana, J., Samie, A., Igumbor, E.O.

“…The prevalence, pathogenic indices, such as haemolytic and haemagglutinating activities, antibiograms, and in-vitro activities of local medicinal plants…”
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Enhancement of lithiation on a graphane monolayer through extended H vacancy pathways: An ab initio study by Kgalema, S.P., Diale, M., Igumbor, E., Mapasha, R.E.

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