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Development and Performance Evaluation of Palm Kernel Shells Fueled Stove Converting Waste to Energy  [PDF]
Basil Olufemi Akinnuli, Oluwaseun Oluwagbemiga Ojo, Olutosin Olufisayo Ilori
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1105032
Abstract:
Oil palm (Elaesis guineensis Jacq.) is an indigenous forest product of West Africa. The natural groves usually have palms that bear ordinary fruits. These fruits emerged hard-kernelled shell (dura) and thin-kernelled shell (tenera). These kernels were found useful as fuel by researcher due to its high calorific value. The existing fuels such as kerosene, gas, are out of reach to an average Nigerian due to its scarcity and high cost. Other means of fuels like charcoal, wood are not hygienic and also not easy to get due to high rate of deforestation, hence the development of kernel-fuel stove. This was possible after preliminary investigation of its calorific value which was found to be 16.9 MJ. The major components of the kernel-fueled stove are the: frame, blower, miner plate, pot carrier and burning chamber. The capacity of the stove is 22.4 kg of kernel shell; its performance evaluation was carried out by comparing the developed stove with other stoves fueled by sawdust, charcoal, gas, kerosene and electric cooker, and it was discovered it got the shortest time for boiling 3 liters of water in 2.30 minutes.
Sensitivity Analysis of Dengue Model with Saturated Incidence Rate  [PDF]
M. M. Ojo, B. Gbadamosi, Adebimpe Olukayode, Ogundokun R. Oluwaseun
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104413
Abstract:
Dengue is a flavivirus, transmitted to human through the bites of infected Aedes aegypti and A. albopictus mosquitoes. In this paper, we analyze a new system of ordinary differential equations which incorporates saturated incidence function, vector biting rate and control measures at both the aquatic and adult stages of the vector (mosquito). The stability of the system is analysed for the dengue-free equilibrium via the threshold parameter (reproduction number) which was obtained using the Next generation matrix techniques. Routh Hurwitz criterion along together with Descartes’ rule of signs change established the local asymptotically stability of the model whenever R0<1and unstable otherwise. Furthermore, the sensitivity analysis was carried out and the numerical simulation reveals that increasing the proportion of human antibody and putting into place a control strategy that minimize the vector biting rate are enough to reduce the infection of the disease in the population to its barest minimum.
Covering Space and Van Kampen theory methods of Fundamental Group
Gbenga Olayinka Ojo,Ajuebishi Patient Adetunji,Oluwaseun Gbenga Fadare,Fisayo Caleb Sangogboye
International Journal of Computer Science Issues , 2012,
Abstract: This paper examines two methods of computing fundamental group which are covering space method and the Van Kampen theory method. Van Kampen theory method is more analytical than the cover space method; the idea is used to solve a geometrical problem of global nature by first reducing it to homotopy theory problem which in turn reduces to an algebraic problem and solves as such. In 2001, H. Fausk et al [1] and Hu [2] showed the isomorphism between left and right adjoint theory and its application to homotopy categories, bearing in mind that homotopy group are higher dimension of fundamental group. In this paper detail explanations of fundamental group and homotopy group will be given. Various definitions and explanation of concepts, which are directly or indirectly related, will also be considered with illustration on how fundamental group can be calculated. This paper also reviews that in principle any space that can be broken up into pieces can have its fundamental group described by generators and relations via Van Kampens theorem
Reduction of Measuring Items- Contemporary Issue in Assessing Internal Consistency
Oluwaseun Gbenga Fadare,Hezekiah Oluleye Babatunde,Gbenga Olayinka Ojo,John Niyi Iyanda
International Journal of Computer Science Issues , 2011,
Abstract: This paper discusses principal component analysis (PCA) as an underlying factor reduction and as a complex, sequential variable reduction procedure in measuring and evaluating internal consistency of measuring instrument. This review paper provides theoretically and practical contemporary-issues on PCA and factor analysis, variable redundancy illustration, concepts of principal component, number of meaningful component to retain, and factor analysis extraction method in multivariate analysis. This paper collects in one review article information for researchers and practitioners in understanding the subject matter in further simplification of steps in multivariate analysis.
HIV/AIDS and family support systems: A situation analysis of people living with HIV/AIDS in Lagos State
A E Oluwagbemiga
SAHARA J (Journal of Social Aspects of HIV/AIDS Research Alliance) , 2007,
Abstract: Current statistics about the HIV/AIDS epidemic in Nigeria do not reveal the broader social and economic impacts of the disease on the family.The study therefore primarily aimed to address the socio-economic effects of HIV infection on individuals and their families.The study was carried out in Lagos State. In-depth interviews were employed to collect information from 188 people living with HIV/AIDS through support groups in the state, while four focus group discussions were conducted to elicit information from people affected by AIDS about the socio-economic impacts of HIV/AIDS on families in Nigeria. From the survey, among people living with HIV/AIDS, 66% of females and males were in the age group 21-40 years, while 10% were older people above 60 years of age. Findings revealed that as HIV/AIDS strikes at parents, grand parents are assuming responsibility for bringing up the children of the infected persons and the orphans of those killed by the virus. It was striking that some of the older caregivers could not meet the requirement of these children.They are often forced to work more than they would have, or borrow in order to cope with the needs of these extra mouths. Some of the infected people have sold their properties to enable them to cope with the economic effects of the virus, while their children have had to drop out of school, since they could not afford the school fees and other related expenses. It was suggested that PLWHA should be economically empowered with adequate medical treatment, in order to reduce the impact of the disease on the family.
Gender inequities in sexually transmitted infections: implications for HIV infection and control in Lagos State, Nigeria
Ezekiel Oluwagbemiga Adeyemi
Infectious Disease Reports , 2011, DOI: 10.4081/idr.2011.e7
Abstract: Beyond the statistics of sex-based differences in infection rates, there are profound differences in the underlying causes and consequences of HIV infections in male and female which need to be examined. The study therefore examines; the gender differences in the STI knowledge and gender-related potential risks of HIV heterosexual transmission. Quantitative and qualitative data were collected. A multi-stage random sampling procedure was employed in administration of 1358 questionnaires. For qualitative data, four focus group discussions (FGD) were conducted to collect information from stakeholders within the study population, while In-depth interview was employed to collect information from 188 people living with HIV/AIDS through support groups in the State. The data collected were subjected to basic demographic analytical techniques. Combination of univariate, bivariate, and multivariate analysis were employed. Information from focus group discussions and in-depth interviews were transcribed and organized under broad headings that depict different aspects of the discussions. Majority of the respondents interviewed did not inform their partners about their infection in the study area. It was also discovered that stigmatization did not allow some women to disclose their status to their sexual partners. Some of the HIV-positive patients interviewed agreed that they did not attend the health facilities to treat the STI’s before they were finally confirmed positive. The study hypothesis revealed that communication between partners about STI’s was associated with an increase in risk reduction behaviour. The paper concluded that there is need for more information and education on communication about STI’s between the sexual partners; to reduce the spread of sexually transmitted diseases within the nation.
Deviant Realization of Foreign Vowels in the Speech-Form of Yoruba-English Nigerian Bilinguals  [PDF]
Ojo George Adekunle
Open Journal of Modern Linguistics (OJML) , 2014, DOI: 10.4236/ojml.2014.45062
Abstract: This paper discusses deviant realization of borrowed phonemes from English into Yorùbá. It is not gainsaying that when a foreign phoneme enters into the syllable structure of English it changes its tongue position both horizontally and vertically. The reason for this change is not far-fetched. Since the majority of the foreign phonemes are absent in native languages, they tend to be substituted with the closest phonemes in the recipient language. This paper has been able to account for the various substitutions of foreign vowels that occur in the speech-form of Nigerians who code-mix English with Yorùbá in their daily conversations. This has been done through the analysis of corpus of data collected from the existing foreign words as spoken by Yoruba-English bilinguals. The result of analysis shows that two or more foreign phonemes become one native phoneme that is entirely different from the input when processed in the recipient language.
Antioxidant properties of methanolic extracts of mistletoes (Viscum album) from cocoa and cashew trees in Nigeria
AA Oluwaseun, O Ganiyu
African Journal of Biotechnology , 2008,
Abstract: Methanolic extracts of Viscum album leaves from two hosts (cocoa and cashew trees) were subjected to antioxidant assay. V. album from cocoa tree had higher total phenol content (182 mg/100 g) as against that of cashew tree (160 mg/100 g). The result of the study also revealed that the ferric reducing ability, free radical scavenging ability as well as the Fe2+ chelation of the extracts were all dosedependent (0 – 1.0 mg/ml). V. album from cocoa tree had significantly higher ferric reducing and free radical scavenging ability than that from cashew tree, while V. album from cashew tree had significant higher Fe2+ chelating ability than V. album from cocoa tree. Although both methanolic extracts showed promise as a good antioxidant source, the total phenol content and the antioxidant capacity pattern of the two extracts suggest host dependency while the possible antioxidant mechanism of action is by reducing ability, free radical scavenging ability and chelation of Fe2+, a major catalyst in lipid peroxidation.
The Place Of Human Dignity In Non-voluntary Euthanasia
Oluwaseun Adeola Adenugba
Lumina , 2010,
Abstract:
Cross Correlation Analysis of Mozambique’s 7.0 M Earthquake Using the Empirical Mode Decomposition  [PDF]
Enoch Oluwaseun Elemo
Open Access Library Journal (OALib Journal) , 2015, DOI: 10.4236/oalib.1101184
Abstract: Precise determinations of ionospheric anomaly variations associated with earthquakes require the elimination of other sources of ionospheric variabilities like ionospheric storms, geomagnetic perturbations or geophysical noise. However, revealing the seismo-ionospheric anomalies when the ionosphere is known to be a complex and nonlinear system is of utmost importance. To overcome this constraint, Hilbert-Huang transform (HHT), which is a far better technique for both nonlinear and non-stationary system like ionosphere, was applied together with the cross correlation coefficient method to a 7.0 magnitude earthquake that occurred in Mozambique on 23rd of February, 2006. Three Stations (two within the earthquake preparation zone) with hourly data of f0F2 for one month were used for the study. The results clearly revealed anomalies that are as a result of the earthquake. These were first noticed 10 days and another 3 days before the occurrence of this large earthquake.
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