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材料科学与工程（中英文B版） 2015年第5期5卷 231-242页

作者： Kabir o. oyedotun Marcus Adebola Eleruja Bolutife olofinjana olumide oluwole Akinwunmi olusoji o.ilori Ezekiel omotoso Emmanuel. Ajenifuja Adetokunbo T. Famojuro Eusebius I. obianjuwa Ezekiel oladele Bolarlnwa Ajay Department of Physics and Engineering Physics Obafemi Awolowo University lle-Ife 220005 Nigeria Department of Electronic and Electrical Engineering Obafemi Awolowo University Ile-Ife 220005 Nigeria Centre for Energy Research and Development Obafemi Awolowo University Ile-lfe 220005 Nigeria Department of Chemistry Obafemi Awolowo University Ile-Ife 220005 Nigeria

Prevalence and risk factors associated with drug resistant TB in South West,Nigeria

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Asian Pacific Journal of Tropical Medicine 2011年第2期4卷 148-151页

作者： olusoji Daniel Eltayeb osman Department of Community Medicine and Pry Care Olabisi Onabanjo University Teaching HospitalSagamu Ogun StateNigeria Damien Foundation Belgium(DFB) Ibadan Nigeria

objective:To determine the prevalence and risk factors associated with drug resistant tuberculosis(TB) in South West ***:A retrospective study conducted among pulmonary tuberculosis(PTB) patients from oyo and osun States in South West Nigeria who had their culture and drug susceptibility test performed at the institute of tropical medicine Antwerp, Belgium between 2007 and *** on the patient’s characteristics were retrieved from the TB treatment *** analysis was performed to assess the risk factors for drug resistant *** Level of significance was at Pong the 88 patients who had drug-susceptibility test result,there were 50 males and 38 *** the 88 patients,55(62.5%) had strains resistant to at least one or more *** proportion of TB cases with resistance to a single drug was 12.7%.The multi-drug resistant TB(MDR-TB) rate was 76.4%.The only significant factor for the development of drug resistance and MDR was the history of previous anti TB treatment(Pother factors such as age[oR 0.86(0.35-2.13);P=0.72]and gender[oR 1.24 (0.49-3.14);P=0.62]were not significantly associated with drug resistance ***:The study highlighted a high prevalence of MDR-TB among the study *** of previous TB treatment was associated with *** is an urgent need to conduct a national TB drug resistance survey to determine the actual burden and risk factors associated with drug resistance TB in the country.

关键词： Tuberculosis Risk factors Resistance MDR Nigeria

Conceptualisation of Cyberattack prediction with deep learning

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Cybersecurity 2018年第1期1卷 788-801页

作者： Ayei E.Ibor Florence A.oladeji olusoji B.okunoye obeten o.Ekabua Department of Computer Science University of CalabarCalabarNigeria Department of Computer Sciences University of LagosLagosNigeria

The state of the cyberspace portends uncertainty for the future Internet and its accelerated number of *** paradigms add more concerns with big data collected through device sensors divulging large amounts of information,which can be used for targeted *** a plethora of extant approaches,models and algorithms have provided the basis for cyberattack predictions,there is the need to consider new models and algorithms,which are based on data representations other than task-specific *** learning,which is underpinned by representation learning,has found widespread relevance in computer vision,speech recognition,natural language processing,audio recognition,and drug ***,its non-linear information processing architecture can be adapted towards learning the different data representations of network traffic to classify benign and malicious network *** this paper,we model cyberattack prediction as a classification ***,the deep learning architecture was co-opted into a new model using rectified linear units(ReLU)as the activation function in the hidden layers of a deep feed forward neural *** approach achieves a greedy layer-by-layer learning process that best represents the features useful for predicting cyberattacks in a dataset of benign and malign *** underlying algorithm of the model also performs feature selection,dimensionality reduction,and clustering at the initial stage,to generate a set of input vectors called *** model is evaluated using CICIDS2017 and UNSW_NB15 datasets on a Python environment test *** obtained from experimentation show that our model demonstrates superior performance over similar models.

关键词： Cyberattacks Prediction Deep learning Python Dimensionality reduction

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Preparation and Some Properties of Metal organic Chemical Vapour Deposited Al-Doped Zno Thin Films Using Single Solid Precursors

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Journal of Modern Physics 2018年第11期9卷 2073-2089页

作者： olumide oluwole Akinwunmi Johnson Ayodele o. ogundeji Adetokunbo Temitope Famojuro olakunle A. Akinwumi olusoji o. ilori olatomide G. Fadodun Ezekiel oladele Bolarinwa Ajayi Department of Physics and Engineering Physics Obafemi Awolowo University Ile-Ife Nigeria Department of Chemistry Obafemi Awolowo University Ile-Ife Nigeria Department of Electrical and Electronic Obafemi Awolowo University Ile-Ife Nigeria Centre for Energy Research and development Obafemi Awolowo University Ile-Ife Nigeria

Zinc oxide (Zno) and Aluminium doped Zno (AZo) thin films were deposited on soda lime glass by Metal organic Chemical Vapour deposition technique (MoCVD), using prepared compound mixtures of Zinc Acetate di-hydrate (Zn(CH3Coo)2⋅2H2o;ZAD) and Aluminium Acetyl-Acetonate (Al(C5H702)3;AAA) precursors at a temperature of 420°C. Effects of the varying mole percent concentrations of AAA precursor additives on the Al dopant concentrations in Zno were systematically studied. The observations were made via investigations carried out on the morphological, optical, electrical and compositional properties of the deposited thin films. The thin films morphology was found to be strongly dependent on the varying concentration of AAA in the precursor mixtures. The average optical transmittance of the thin films in the uv-visible region was over 85% except 5 mol.% Al. While the energy band gaps were found to be in range of 3.27 - 3.36 eV. There is a blue-shift of the energy band edge observed between 0 and 5 mol.% AAA, which may be due to Burstein-Moss’ band gap widening effect and an opposing band gap renormalization effect at 10 mol.% AAA along with an extra band gap stabilization effect (Roth’s effect) at 15 mol.% AAA in rather quasi-sinusoidal or anomalous behaviour. The optical transmittance and electrical conductivity of Zno were enhanced with addition of Al dopants. The RBS confirm the presence of Al, Zn and o, and evidence that Al dopants were successfully incorporated into the Zno.

关键词： Zno Thin Film Zno:Al MoCVD optical Properties AAA ZAD Electrical Properties FESEM UV-Vis optoelectronic Properties

Aetiology and Demographic Attributes of Common Pleural Collections in an African Population

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Surgical Science 2013年第7期4卷 332-338页

作者： Ezekiel o. ogunleye Martins o. Thomas olugbenga o. olusoji Cardiothoracic Surgery Unit Lagos University Teaching Hospital/College of Medicine of University of Lagos Idiaraba Surulere

Background: Fluids collect in the pleural space under different conditions and they are of different types. Detailed study of demographic attributes and aetiology of pleural collections has not been well reported in Africa. Aims and objectives: This study was conducted to determine the demographic attributes and aetiology of common pleural space fluid collections. Methods: The sample population consisted of referrals received via clinics, admission through the emergency centre and wards. We noted their biodata, hospital identification numbers, ages and gender and other relevant parameters. Data analysis was done with special interest in gender-based diseases like ovarian carcinoma prostatic carcinoma and the like. Results: There were 372 patients over a 55-month period. The M:F ratio was 1:1 approximately. The combined mean age was 37.8 ± 0.92 years at 95% confidence interval. Their distribution was negatively skewed and it was leptokurtic. The age bracket of 20 - 49 had 65.6% of cases. There was gender based disparity in ages. Discussion: Malignant effusions constituted majority of sample size and the right side was consistently affected more often than the left side. Conclusion: Advanced malignancies are the commonest causes of pleural effusion. There is ongoing epidemiologic transition of diseases as the burden of non-communicable diseases is now juxtaposed with that of communicable diseases in Africa.

关键词： Pleural Effusion/Collection Africa

Adult Cardiac-Related Deaths: A Reflection of Epidemiologic Transition of Diseases in the Developing World?

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World Journal of Cardiovascular Surgery 2012年第4期2卷 108-113页

作者： Martins oluwafemi Thomas Nicholas A. Awolola olugbenga o olusoji Department of Anatomic and Molecular Pathology Cardiothoracic Surgery Unit Lagos University Teaching Hospital/College of Medicine of University of Lagos Lagos Nigeria

Background: Epidemiologic transition of diseases is taking place globally. Therefore, it is necessary that more work is done to unravel the situation in respect to cardiac diseases in the developing world;Aim: The research was conducted to ascertain the cardiac causes of death in adults and by extension to further unravel the epidemiologic transition in relation to cardiac diseases in the developing world. Materials and Methods: This is an autopsy study of adult cardiac related causes of death in the year 2010 at the Lagos University Teaching Hospital in Nigeria, West Africa. It was conducted based in a 700-bedded hospital that has a catchment area of about 15 million people. Patients’ data (including bio-data, causes of death, etc.) were extracted from autopsy records for the year 2010. The data were entered and analysed with SPSS software. Results: There were 789 autopsies in the year and 99 of deaths were cardiac-related. There was male preponderance with a mean age of 54.2 ± 1.568 years. Hypertensive heart disease was the primary disease in 97.0% of cases in the studied sample. one 76 year old adult had myocardial infarction. There was no case of adult congenital heart disease. Intracerebral haemorrhage was the commonest cause of death. Discussion and Conclusion: Cardiovascular diseases constitute a growing threat to health among Africans. The developing countries are in stages II and III of omran epidemiologic transition of diseases. This presents a major challenge to a large proportion of the world population with additional problem of poverty and ignorance. A 4-point agenda is suggested to reduce incidence of cardiovascular diseases (and deaths) in the developing world.

关键词： Cardiac Deaths Disease Transition

Bradyarrythmias: A Study of Anthropometric, Demographic and Comorbidity Profiles in an African Population

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World Journal of Cardiovascular Surgery 2013年第7期3卷 209-214页

作者： Martins oluwafemi Thomas Ezekiel o. ogunleye olugbenga o. olusoji Augustin olugbemi o. o. ojo Cardiothoracic Surgery Unit Lagos University Teaching Hospital Lagos Nigeria College of Medicine of University of Lagos-Idiaraba Lagos Nigeria

Background: Bradyarrhythmias are a group of cardiac rhythm disorders that are characterized by bradycardia and they are cosmopolitan in distribution. Their demographic, anthropometric and comorbidity attributes are yet to be clearly established in Africa. Aims and objectives: This study was conducted to determine the anthropometric, demographic and comorbidity factors in an African population. Methods: We got data from two groups of patients—Group A were bradyarrhythmia patients who already had permanent pacemaker insertion (PPI). Group B were non-cardiac non-debilitated patients of similar age bracket. The sample population consisted of referrals received via clinics, admission through the emergency centres and wards. Their bio-data, hospital identification numbers, ages and gender and other relevant parameters were carefully documented. The ensuing data was analyzed with SPSS 21 statistical software. Results: There were 31 patients in group A (17 male and 14 female patients) and 36 in group B (22 male and 14 female patients). They were all above 20 years of age. Group A had a mean age of 65.8 ± 4.76 years while group B had a mean age of 62.2 ± 4.47 years. Body Mass Index (BMI ≥ 25 Kg·m-2), elevated BP, and diabetes mellitus were important clinical attributes of bradyarrhythmias in the studied group. Discussion and Conclusion: our study showed that the stated anthropometric, demographic and comorbidity parameters are important attributes for bradyarrhythmias in African population.

关键词： Bradyarrhythmias Anthropometry Demography Comorbidity

Spectrum of congenital heart diseases in an African population: A necropsy study

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World Journal of Cardiovascular Diseases 2013年第1期3卷 34-39页

作者： Mo Thomas olugbenga olusoji Nicholas Awolola Cardiothoracic Surgery Unit Department of Anatomic and Molecular Pathology Lagos University Teaching Hospital/College of Medicine of University of Lagos Idi-araba Lagos Nigeria

Background: The spectrum and incidence of congenital heart diseases amongst African population are not well defined in literature. There is the need to further elucidate the spectrum and epidemiology of congenital heart diseases amongst African. Aim: This study was conducted to highlight the spectrum and occurrence of congenital heart diseases in an African population. Methodology: All paediatric patients who were autopsied over a 98-month period were checked for occurrence of congenital heart diseases. Attempts were made to ascertain the primary disease and causes of death. We noted their bio-data, ages, sexes and causes of death. The results were analysed with SPSS version 17. The results formed the basis for discussion and recommendations. Results: There were 135 cardiac related deaths and 36 of them were in paediatric age brackets. The mean age was 4.7 + 1.08 months with a standard deviation of 6.27. M:F ratio was 1:1.1. The commonest anomaly was ventricular septal defect. There was a weak association with other congenital anomalies. The commonest cause of death was bronchopneumonia. Discussion and Recommendation: The disease pattern showed reasonable similarity with reports from other parts of the world. However, there is need for development of capacity for prenatal diagnosis of congenital heart diseases in Africa. This will widen the net of diagnosis and improve accuracy of incidence studies in Africa.

关键词： Congenital Heart Diseases Necropsy

Influence of Polyphenolic Contents on the Antioxidant Properties of Hibiscus sabdariffa Extract (HSE), Aged Garlic Extract (AGE) and Garlic Tablet (GT) in Vitro

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Food and Nutrition Sciences 2016年第6期7卷 417-428页

作者： Abiodun olusoji owoade Adewale Adetutu olubukola Sinbad olorunnisola Department of Biochemistry Ladoke Akintola University of Technology Ogbomosho Nigeria

This study compared the antioxidant properties of Hibiscus sabdariffa extract (HSE), commercial aged garlic extract (AGE, Kyolic) and garlic tablet (GT). The results indicate that HSE, AGE and GT are effective antioxidant as xanthine/xanthine oxidase generated superoxide ions are significantly inhibited in the presence of 20% (v/v) diethyl ether extract of HSE, AGE and GT by 100%, 66.39% and 18.61% respectively, while uric acid production is not affected byAGEand GT. However, at 2.5% and 5.0% (v/v) reaction volumes,HSEsignificantly inhibits uric acid production by 9.5% and 33.0% respectively, and this suggests that components ofHSEinhibit xanthine oxidase activity while AGE and GT scavenge superoxide. In addition, it is also found that the three extracts scavenge ABTS radical cations in dose-dependent manner. In all cell free assays, HSE is found to be more effective as an antioxidant when compared with AGE and GT under the same experimental conditions. Chromatographic and colorimetric analyses suggest thatHSEhas numerous different types of phenolic compounds with higher amount of phenolic compounds (14.9 mg/g) when compared withAGE(2.8 mg/g) and GT (3.6 mg/g) catechin equivalent respectively. Therefore, the effectiveness of antioxidant activities of these three extracts may be related to their phenolic content.

关键词： Hibiscus sabdariffa Aged Garlic Extract Antioxidants Phenolic Compounds

Nutritive Values and Antioxidant Activity of <i>Citrullus lanatus</i>Fruit Extract

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Food and Nutrition Sciences 2015年第11期6卷 1056-1064页

作者： Adewale Adetutu olubukola Sinbad olorunnisola olusoji Abiodun owoade Ladoke Akintola University of Technology Ogbomoso Nigeria

Citrullus lanatus (Watermelon) is a fruit cultivated and consumed in Africa for its essential nutrients which are very beneficial to the human body. The present study was designed to evaluate the nutritive contents, free radical scavenging activities and phytochemical components of C. lanatus fruit. The extract of the fruit was subjected to in vitro antioxidant assessment using 1,1-di-phenylpicryl-hydrazyl radical (DPPH) and hydrogen peroxide radical scavenging assays. The proximate and phytochemical analyses were conducted using standard procedures. The results of this study showed that C. lanatus fruit had very high moisture content and its crude protein, crude fat, crude fibre and ash content were all in traceable amounts. The sugar content was considerably high in comparison with other nutritive contents. Lycopene and β-carotene contents of C. lanatus fruit were estimated to be 4537.83 and 308.71 μg/100g respectively. The gross energy evaluation showed a value of 0.335 Kcal/g. The fruit extract exhibited significant (p 50 of 0.10 mg/ml) and hydrogen peroxide radicals scavenging activity (IC50 of 0.62 mg/ml) in comparison with the positive control butylated hydroxytoluene (BTH). This study therefore recommends that C. lanatus fruit could be an excellent source of antioxidants which may prevent diseases whose pathogenesis involves oxidative stress.

关键词： Citrullus lanatus Phytochemical Nutritive Contents Vitamins