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Search Results: 1 - 10 of 119 matches for " Blessing Bolarinwa Fabeku "
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Trends in Vegetation Response to Drought in Sudano-Sahelian Part of Northern Nigeria  [PDF]
Blessing Bolarinwa Fabeku, Emmanuel C. Okogbue
Atmospheric and Climate Sciences (ACS) , 2014, DOI: 10.4236/acs.2014.44052
Abstract: This study was carried out to evaluate the drought occurrence and its implication on vegetation cover over the Sudano-Sahelian zone of the Northern part of Nigeria. Monthly mean Rainfall data for the period 40 years (1971-2010) were obtained from Nigeria Meteorological Agency (NIMET) for each of the meteorological stations present and functioning in this region for climatic analysis. Standardized Precipitation Index (SPI) was used to analyze drought occurrence on a time scale of five (5) months that cover the period of raining season over the study area. Also Satellite data over the selected part of the study area for three different epochs, 1986, 2000 and 2005 were used for vegetation response analysis. The SPI values were interpolated using Inverse Distance Weighted (IDW) interpolation technique in ArcGIS 9.3 to generate Drought Spatial Pattern Map for each selected modeled years. The vegetation response indicators used are land cover maps and Greenness Index (GI) maps. Land cover categories were classified into five levels: Dense Vegetation, less dense Vegetation, Settlement/built up, Bare Surface and Water body. The results based on the ground truth (rainfall) data show that many years of drought episode were experienced over the study area. On the other hand, the prime indicators (Land cover and GI maps) used in this study also depicts the changes that took place over the study area in response to this climatic anomaly (drought) and it could be noted that there was dramatic reduction in the occurrence towards the end of the last two decade, 1990-1999, which simply indicated improvement in rainfall even in 2000 and the later years.
Spatio-Temporal Variability in Land Surface Temperature and Its Relationship with Vegetation Types over Ibadan, South-Western Nigeria  [PDF]
Blessing Bolarinwa Fabeku, Ifeoluwa Adebowale Balogun, Suleiman Abdul-Azeez Adegboyega, Orimoloye Ipoola Faleyimu
Atmospheric and Climate Sciences (ACS) , 2018, DOI: 10.4236/acs.2018.83021
Abstract: Ibadan has experienced a rapid urbanization over the past few decades due to heavy influx of people from different parts of the country as a result of improved economy of the region. This development induced a great change in land use and land cover over the region which has become a major environmental concern recently. This study assessed Land Surface Temperature (LST) and its spatio-temporal relationship with land cover type over Ibadan. Land use/Land cover dynamics were assessed using index maps generated from Landsat Satellite data (TM, ETM+ and OLI) of Ibadan. The corrected thermal Infrared bands of the Landsat data were used to retrieve LST. The results revealed a notable increase in built-up areas from 5.64% of the total land cover area in 1984 to 14.05% in 2014. This change has caused increase in surface temperature of Ibadan from 3.56?C to 8.54?C between 1984 and 2014 respectively. The study recorded a continuous decrease in the vegetal part of Ibadan (from 43.28% in 1984 to 14.76 in 2014) which could be attributed to anthropogenic activities as the vegetated land area lost was been converted to other form of land use. The change was found to be positively correlated to the surface temperature intensity over the region with correlation coefficient, r value of 0.9251, 0.8256 and 0.7017 in 1984, 2000 and 2014 respectively. It is recommended that Policies should be considered for planting trees, new guidelines for urban landscape design and construction.
Termiticidal Activity of Parkia biglobosa (Jacq) Benth Seed Extracts on the Termite Coptotermes intermedius Silvestri (Isoptera: Rhinotermitidae)
Bolarinwa Olugbemi
Psyche , 2012, DOI: 10.1155/2012/869415
Abstract: The chemical and mineral composition of raw and boiled seeds of the African locust bean, Parkia biglobosa (Jacq) Benth, was determined while the termiticidal action of the aqueous, alcoholic, and acetone extracts of the bean seeds were investigated. Variations in the proximate and mineral composition of the raw and boiled seeds were obtained while heavy minerals such as cadmium, cobalt, lead, nickel, and copper had been leached out of the seed during the process of boiling. Extracts from the raw seeds exhibited varying degree of termiticidal activity, while extracts from the boiled seed had no effect on the workers of Coptotermes intermedius Silvestri. Alcoholic extracts were more active than the aqueous and acetone extracts. Termites die within 30 min, 40 min, and 110 min when exposed to concentration of 4 g mL−1 treatments of alcoholic, aqueous, and acetone extracts, respectively.
Chemical, Functional and Pasting Properties of Wheat (Triticumspp)-Walnut (Juglansregia) Flour  [PDF]
Blessing I. Offia-Olua
Food and Nutrition Sciences (FNS) , 2014, DOI: 10.4236/fns.2014.516172
Abstract:


Walnut (Juglansregia) seeds are edible rich source of several essential nutrients which can be processed into flour for several purposes. Composite flour blends (wheat/walnut flour) in the ratio of 100:0, 90:10, 80:20, 70:30, and 50:50 were produced and analyzed for proximate composition, functional properties and pasting properties using standard techniques. Proximate composition results indicated increased level of protein and fat (12.17% - 25.70% and 2.40% - 37.57%) respectively while carbohydrate decreased (63% - 19.4%) with increasing level of substitution with walnut flour. Functional analysis result indicated a decreasing level of bulk density and water absorption capacity (0.78% - 0.52% and 5.17% - 4.03%) respectively while swelling capacity increased (2.00% - 7.53%) with increasing level of walnut flour substitution. Pasting properties data indicated a decreasing level of pasting viscosity (92.69 - 42.30), trough (59.19 - 39.60) RVU, breakdown (33.55 - 2.92) RVU, final viscosity (252.09 - 95.51) RVU, setback (192.85 - 55.93) RVU with increasing level of walnut flour substitution. Results showed that supplementing wheat flour with walnut flour considerably improved the protein and fat content of the flour, hence they can find useful application for making of pastries like cakes and other snacks.


Effect of Heat Treatments on Corrosion of Welded Low-Carbon Steel in Acid and Salt Environments  [PDF]
Saliu Ojo Seidu, Bolarinwa Johnson Kutelu
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2013, DOI: 10.4236/jmmce.2013.13018
Abstract: Effect of heat treatment on the corrosion of welded low-carbon steel in 0.3 M and 0.5 M of hydrochloric acid and sodium chloride environments at ambient temperature (25oC) has been investigated. Arc welded low-carbon steel sample of known composition were subjected to the corrosion reagents for 21 days (504 hours). pH and weight loss values were taken at interval of 3 days. Thereafter, weight loss method was used to measure therate of corrosion attack on the heat treated samples at ambient temperature. Results obtained showed that at low concentration, the annealed sample exhibits better corrosion characteristic as compared to the normalized and quenched samples. However, at higher concentration the normalized sample exercised better service performance over the annealed and quenched samples. Thequenched sample was found to have relatively low corrosion performance over the annealed and normalized samples at both low and high concentrations of the media.
Roles of Subsidiaries to Parent and Motivations Justifying Their Presence in Developing Countries (DCs): Synthesis of Literature  [PDF]
Alexis Abodohoui, Bolarinwa Osunlalu, Nie Guihua
iBusiness (IB) , 2013, DOI: 10.4236/ib.2013.53B026
Abstract:

This paper reviews different policies and looks in some detail at the factors influencing the choice of development of subsidiaries in developing countries. It shows also that the subsidiaries play an important role to the MNC units. We review in this paper some of motives for international transfer, control, coordination, investment, and development of new capability. This research highlights the peculiarities in African business world and improves the strategies about the optimization of the investment in developing countries.

Effects of Additives on Some Selected Properties of Base Sand  [PDF]
Saliu Ojo Seidu, Bolarinwa Johnson Kutelu
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2014, DOI: 10.4236/jmmce.2014.25051
Abstract: In this study, effects of sawdust, coal dust and iron filling additives at varied proportions on some selected properties of moulding sand were investigated. Consequently, cylindrical specimens with different percentages of additives were prepared based on standard procedures. The prepared specimens were subjected to basic moulding sand testing including moisture content, bulk density, porosity, permeability, green compression strength and green shear strength using standard methods and equipment. From the obtained test results, all the experimental additives were found to improve the selected moulding properties of the base (silica) sand. Moulding sand specimen with sawdust additive revealed a relatively better compaction as compared to moulding sand specimens with coal dust and iron filling additives respectively. The moisture absorbing strength of the moulds was also found to increase with increasing percentage of sawdust. Addition of coal dust to the moulding sand was found to improve sand porosity and permeability which results in less casting defects, and due to improved moisture absorbing strength of sawdust, moulding sand specimens that contained sawdust were equally found to exhibit good compaction with maximum green compressive strength of 108.99 kPa. Also, the combination of 25% sawdust, coal dust and iron filling in the moulding sand was found to produce mould with optimum green shear strength value of 54.49 kPa.
Mapping of Flood Prone Areas in Surulere, Lagos, Nigeria: A GIS Approach  [PDF]
Chidinma Blessing Okoye, Vincent Nduka Ojeh
Journal of Geographic Information System (JGIS) , 2015, DOI: 10.4236/jgis.2015.72014
Abstract: Increase in the frequency of flooding incidents all over the world and indeed in Nigeria is a major cause for concern. The purpose of this research work is to identify the factors that lead to flooding; and using Geographic Information Systems, map the flood prone areas in Surulere. The causal factors of flooding in Surulere, such as high rainfall intensity and duration, land use patterns, human actions, urbanization, soil impermeability to mention but a few were identified. The pattern of rainfall in Surulere was analysed using 20 years rainfall data from The Nigerian Meteorological Agency. The land use/land cover map as well as the DEM of Surulere was generated in the ArcGis environment with ikonos imagery and 1:50,000 toposheet of Lagos S.E which covers Surulere. The Flood prone areas in Surulere were then mapped. Results show that majority of the land area of Surulere is prone to flooding. Flood mitigation such as early warning systems and flood forecasting, proper urban development, awareness and research should be implemented by the Lagos State Government.
Effect Of Nicotine Administration On Weight And Histology Of Some Vital Visceral Organs In Female Albino Rats
BO Iranloye, AF Bolarinwa
Nigerian Journal of Physiological Sciences , 2009,
Abstract: Summary: It has been emphasized that cigarette smoking is not always synonymous with nicotine administration but the toxic effect of cigarette has often been associated with the nicotine content in cigarette. Epidemiologic studies have clearly indicated that cigarette smoking have many deleterious effects on visceral tissues in women. However it is not certain whether this effect is produced entirely by nicotine as cigarettes contain other toxic substances. Using an animal model the direct effect of nicotine administration on viscera tissues in female albino rats was investigated. Twenty-four female rats with regular oestrous cycle in the same phase of the cycle were divided into two equal groups with each group receiving 0.5mg/kg nicotine and 0.9% normal saline S.C. daily respectively. Six rats from each group were killed by cervical dissociation after 30 and 60 days treatment. The ovary, uterus, brain, kidney, heart, adrenal, pituitary and the liver were removed weighed and histological study carried out. Weights of the ovary, kidney, pituitary and uterus were significantly reduced (P< 0.05) following nicotine treatment while weights of the heart and liver increased with 60days treatment with the appearance of cartilaginous cells in the heart and deposition of adipose around the portal vein in the liver. Necrosis, congestion, fibrosis, follicular and endometrial degeneration were observed in the brain, pituitary, kidney, ovary and uterus respectively. No significant difference between the weekly growth rates in nicotine treated (5.13 ± .29) and control (5.25 ± 0.18) animals. Nicotine has deleterious effects on some vital visceral organs with observations similar to those reported in women smokers.
Posterior Slope of Tibial Plateau in Adult Nigerian Subjects
Didia,Blessing C; Jaja,Blessing N. R;
International Journal of Morphology , 2009, DOI: 10.4067/S0717-95022009000100034
Abstract: normal values of the tibial slope are necessary for realignment of displaced fractures of the tibia crest, repair of cruciate ligaments and correction of knee deformities. true lateral radiographs of normal knees were obtained in 119 males and 93 female nigerian subjects. the tibial slope was then measured according to the anterior tibial cortex method. mean angle in sampled subjects was 12.3 ± 4.90 (range: 0-240). sex differences were statistically insignificant (p>0.05). this study provides reference values of tibial slope among indigenous adult nigerians. it also highlights on the clinical relevance of the angle and the need to establish normal ranges in other african populations.
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