Natural & Applied Sciences

Research Papers/Topics Natural & Applied Sciences

MELLIN TRANSFORM METHOD FOR THE VALUATION OF AMERICAN POWER PUT OPTION

Abstract American Power Put Option (APPO) is a financial contract with a nonlinear payoff that can be applied at any time on or before its expiration date and offers flexibility to investors. Analytical approximations and numerical techniques have been proposed for the valuation of Plain American Put Option (PAPO) but there is no known closed-form solution for the price of APPO. Mellin transform is a useful method for dealing with unstable mathematical systems. This study was designed to der...

EFFECTS OF LAMIVUDINE ON BIOCHEMICAL INDICES IN RATS

ABSTRACT Lamivudine (L(-)2 1 ,31 –dideoxy–3-thiacytidine) is an antiretroviral drug which exhibits tissue toxicity leading to peripheral neuropathy and parkinsonism. The exact mechanism of cytotoxicity and effects on target tissues are not well understood. This study was designed to elucidate the effects of lamivudine on biochemical indices in the liver, kidney and brain of rats. Female Wistar rats (180-200g) were randomly assigned into 5 groups of 6 rats each treated orally for 45 days ...

COMPUTATIONAL STUDY ON POLYMERS OF UNSUBSTITUTED AND SOME SUBSTITUTED PYRROLES

ABSTRACT Conjugated polymers which interact with biological systems have attracted interest due to their high conductivity, stability and electronic properties. Substituted polymers of 3-methyl pyrrole-4-carboxylic acid (MPCa ) have been synthesised and used as components of biosensor, while unsubstituted polypyrroles are not effective for such application. However the mechanism of interaction, nature, the relative importance of dynamic and static electron correlation of the polymers are not...

Prevalence of HIV and Malaria parasites co-infection in pregnant mothers and their babies post .delivery

Abstract Worsened perinatal outcomes and increased rates (If maternal morbidity are consequences of co-infection of HI V and Plasmodium falciparum in pregnant-women. This study was designed to ascertain the proportion of co-infection of both diseases in pregnant mothers and babies born to HIV-infected mothers. A total of 149 pregnant mothers and 30 babies of HIV-infected mothers were engaged in a longitudinal study for III months in the endemic area of Saki and Ibadan. Only babies born to HI...

CHARACTERISATION, PATHOGENICITY AND ANTIBIOTIC RESISTANCE OF MYCOPLASMAS INVOLVED IN VULVOVAGINITIS IN GOATS

ABSTRACT Vulvovaginitis is an inflammation of the vulva and vagina caused by bacteria, fungi, viruses, parasites and allergy. The condition results in reduction in mating ability, infertility, abortion and death of the affected animals with resultant economic loss to the livestock industry. Although mycoplasmas have been isolated from cases of vulvovaginitis, their role as sole causative agents and in the pathogenicity of the disease have not been investigated in goats in Nigeria. The aim of...

RESERVOIR CHARACTERISTICS AND PALAEO-DEPOSITIONAL ENVIRONMENT OF DUSKI FIELD, ONSHORE, NIGER- DELTA, NIGERIA

ABSTRACT  The Niger Delta is a prolific hydrocarbon producing belt in the southern Nigeria sedimentary basin on the continental margin of the Gulf of Guinea. This study used well log suites to delineate the hydrocarbon reservoirs, depositional environments and lithostratigraphy of the Duski Field, Onshore Niger Delta, Nigeria. A comprehensive interpretation of the three wells revealed five (5) reservoir units with low volume of shale and thickness variations between 24m and 60.20m. The aver...

Natural Radioactivity and Hazard Assessment of Imported Ceramic Tiles in Nigeria

ABSTRACT The natural radionuclides (226Ra, 232Th and 40K) content of ceramic wall and floor tiles commonly used in Nigeria have been determined by a gamma ray spectroscopy system using a high purity germanium detector. The activity concentrations of 226Ra, 232Th and 40K ranged from 52 ± 2 to 105 ± 3, 56 ± 1 to 115 ± 2 and 185 ± 9 to 893 ± 17 Bq kg-1 with mean values of 72 ± 14, 84 ± 18 and 629 ± 198 Bq kg-1, respectively for the wall tiles. For the floor tiles, the activity concentra...

MINERALOGICAL AND GEOCHEMICAL ASSESSMENT OF PARTICULATE MATTER (PM10) IN IBADAN METROPOLIS, NIGERIA

ABSTRACT Particulate Matter (PM) are suspended solid and liquid particles in the atmosphere, classified into coarse (PM10, 2.5 to 10µm) and fine (PM2.5 2.5 µm) and irregular in shape with very few being regular and fine (Fe>Al>Na>Mg>Si>Zn>Cu>Mo>Mn>Ba>Ti>Pb>Ni>La. The IA showed highest average concentration of all elements in the PM10 except Ba, which was highest in TA. The elemental composition agreed with the mineralogical data as revealed by the PCA. Factor 1 was loaded with Al, Si, Ca, ...

Trends and Policy Correlates of Agricultural Production and Agricultural Production Sustainability Outcomes in Ghana and Nigeria

ABSTRACT This paper analysed policy correlates of agricultural production and agricultural production sustainability outcomes in Ghana and Nigeria. It underscores the influence of political systems and international development agendas as correlates of agricultural production and agricultural production sustainability outcomes. This is to the extent of providing evidence policy on agricultural production and agricultural production sustainability outcomes. Ghana and Nigeria have comparable fa...

Seasonal Variations in antibody response to a Plasmodium falciparum recombinant circumsporozoite antigen in two villages in South Western Nigeria

ABSTRACT An Enzyme Linked Immunosorbent Assay (ELISA), employing a recombinant peptide capture antigen (R32tet32) was used to detect antibodies against the circumsporozoite protein (CSP) of the malaria parasite, Plasmodium falciparum in 169 serum samples from 16 subjects from two villages, Afefu (FA) and Tobalogbo (TB), in Igbo-Ora Community of Oyo State, over a period of 12 months. The maximum and mean Ab response for FA was higher than for TB samples (0.511 AU±0.170, 0.124±0.045U and 0.2...

ASSESSMENT OF GROUNDWATER CONTAMINATION BY PETROLEUM PRODUCTS IN BARUWA COMMUNITY LAGOS, NIGERIA

ABSTRACT Contamination of petroleum products in groundwater in Baruwa community, Lagos has been widely reported, as a result of ageing pipelines and vandalisation. Information on the types, nature of hydrocarbon and other contaminants that could assist in assessing the level of contamination is lacking. This study was therefore designed to assess the hydrogeochemical settings (delineate aquiferous units, quantify contaminated unit and define types of hydrocarbon present) in the groundwater r...

INTRA URBAN POPULATION MOBILITY IN THE OLD CORE OF IBADAN CITY

The interest of this thesis is in finding out whether or not there is any residential relocation in the old core of Ibadan city within the past five years (1968-1972): and if there is any, to find out the processes generating the movements. Consequently there are two main parts to the study. out the processes generating the movements. Consequently The first part sought for the pattern and volume of residential relocation. It looked at the direction and distance of the movements, using an acco...

HYDROCARBON GENERATIVE POTENTIAL OF CRETACEOUS SEDIMENTS OF KANADI-1 WELL, BORNU BASIN, NIGERIA

ABSTRACT The hydrocarbon potential and paleodepositional environment of Cretaceous sediments from the Borno Basin, Nigeria, were assessed by Rock-eval pyrolysis and biomarker geochemistry. The Total Organic Carbon (TOC), soluble organic matter (SOM) and genetic potential (GP) values ranged from 0.52 – 0.82wt%, 455.64 – 1003.04 ppm and 0.23 – 0.63 mg/g, respectively. These values suggested that the sediments were moderately rich in organic matter. The Hydrogen Index (HI) values (19 – 8...

Candidaemia or Candidasis: Controversy of Staphylococcus Sexually Transmitted Infections

ABSTRACT Herbal medications are becoming increasingly popular but a most-extraordinary claim by traditional/herbal medical practitioners relates to a Gram-positive bacterium, Staphylococcus, which has been depicted as a deadly sexually transmitted disease that manifest in the form of worms and other symptoms; with contributory roles including infertility, sexual dysfunction and impotency. They further boasted that they are the only ones that possessed the remedy (herbal) for the Staphylococcu...

Evaluation of Certain Preventive Measures to Malaria Infection

ABSTRACT This study provides information on the infectivity rate of Plasmodium falciparum on subjects attending University of Ilorin Teaching Hospital (UITH), Ilorin, Kwara State, Nigeria. Information on the use of certain preventive measures to control malaria transmission and also the need to keep a clean environment for more healthy living is given. A total of 200 subjects attending UITH were recruited into the study. Their blood samples were collected and analyzed microscopically for the ...


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