Federal University of Technology, Akure
  • Akure, Ondo State, Nigeria
Recent publications
The concentration of heavy metals (Cd, Co, Cr, Pb and Ni) in topsoil samples around Obajana Cement Plc was determined to assess the impact of cement dust emitted from the factory environment. The analysis was carried out using Atomic Absorption Spectrophotometer. Samples of the topsoil were collected from the factory at various distance points. The control was collected from a sparsely populated area which is 15 km away from the factory. The pH of the soils ranges from 6.18 to 8.43 against a controlled pH of 6.11. The EC level decreases with increasing distances from the factory. The soils of all the studied sites have very low silt content and a high sand content. There was significant decrease in Cr, Cu and Cd with an increase in the distance from the cement factory. The concentrations of the metals at each point were below the WHO standard of the individual metal in the soil.
In the Ilorin metropolis, there are power challenges. Energy supplied by Power Holding Company of Nigeria is insufficient for the social, technological, and industrial requirements of the metropolis. Moreover, the huge municipal solid waste (MSW) produced daily that supposed to be converted to energy is only constituting a nuisance. In waste to energy (WTE) procedures, the heating value (HV) of the MSW generated is pertinent in the selection or design of an appropriate waste to energy (WTE) technology required for waste conversion. The HV determination using ultimate analysis is tedious, expensive, and requires specialized equipment. A proximate analysis method that is less tedious and cheaper was adopted to obtain the dependent variables for the modeling of the HV. The high heating value (HHV) of MSW components was determined using a bomb calorimeter, and proximate analysis was used to determine the typical values for fixed carbon (FC), volatile matter (VM), Ash, and moisture (MC) to be 32%, 37%, 13%, and 5% correspondingly. The typical HV was estimated to be 24 MJ/kg. The heating value obtained from the bomb calorimeter was modeled against the dependent variables from proximate analysis. The conventional ordinary least squares (OLS) estimator is popularly used to estimate the model parameters. However, the performance of the estimator suffers a setback when the predictor variables are correlated. Alternatively, the ridge estimator (RE) and the principal component regression estimator (PCE) can be adopted. In this study, we combined PCE and RE to form the r-k class estimator for effective modeling. The estimators’ performances are assessed using the mean squares error (MSE) criterion. The estimator with the smallest MSE is generally preferred. The result, the MSE of OLSE, ridge, PCE, and r-k are 581.84, 2.56, 523.69, and 0.239, respectively. The r-k class estimator outperforms other estimators considered in this study and is employed for the modeling. With a unit increase in the volatile matter and fixed carbon, heating values increased by about 21% and 36%, respectively. Also, the heating values decrease by about 0.2% and 40%, respectively, with a unit increase in Ash and Moisture.
Airborne magnetic and radiometry data sets over potential gold mineralisation associated with mesothermal alteration zones in the western Ilesha schist belt, Southwestern Nigeria, were interpreted. This was done to provide information on possible extent of geologic transformations that accompanied gold mineralisation in the area. Interpreted gamma spectrometric data were successfully used in delineating zones of hydrothermal alteration associated with potassium K enrichment as the target for gold deposits. The geological structural features that host the ore deposits were identified as lineament represented by lithological contacts and faults/fractures that were successfully exacted from the airborne magnetic data. The potassium deviation (KD) map was computed to enhance the potassium signature of rocks in the area of study. Thus, the KD map represents real potassium distribution across the study area emanated from hydrothermal alteration where hydrothermalised zones were displayed by high KD values. First vertical derivative (FVD) and total horizontal gradient (THG) maps were used to delineate lineaments. These lineaments were connected using the frequency rose diagram with two main lineament set,; major and minor lineaments observed. The 3D Euler deconvolution (EUD) method was also applied on the THG map to locate and evaluate depths to subsurface structures. The best 3D EUD solution for dykes and contacts modelled using the Structural Index of zero (S.I = 0) was used to estimate the depth to these anomaly sources at 300 to 700 m in the study area. The EUD results also revealed several subsurface structures which were hidden in the existing geological map of the study area. A prospective mineralisation map was produced from the synthesis of both magnetic lineaments and alteration zones maps derived for the study area, showing the areas of probable high mineral resources. Strong relationships were observed between the mapped hydrothermal altered zoneseologic structures and superimpose known gold mining pits.
This research investigates the effects of snail shell-based hydroxyapatite (HAp) reinforcements on the mechanical, wear, and selected physical properties of epoxy-based composites. The exploitation of these properties was aimed at assessing the suitability and efficiency of the developed bio-composites for adhesive biomedical applications. Snail shell wastes were sourced and processed to obtain (HAp) particles of ˂20 μm. The bio-derived hydroxyapatite-based epoxy composites were produced using the stir-cast method by mixing the hydroxyapatite with the epoxy resin and hardener before pouring into the moulds where they are allowed to cure. Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) of the snail shell hydroxyapatite particles were carried out while mechanical, wear, and physical properties of the developed composites were evaluated. SEM images of the fracture surfaces were also examined. The results showed that enhancements occurred from the addition of snail shell-derived HAp to epoxy resin in the developed composites. The results revealed that most of the properties gave their optimum values when 15 wt.% reinforcement was used. At this weight fraction, optimum values were obtained which include 43 MPa for maximum flexural strength, 40HS for hardness, 40 J for impact, 0.35 W/mK for thermal conductivity, and 0.07 for wear index.
Purpose: This study investigated physicochemical properties and antimicrobial performance of soaps formulated from natural ingredients with the intention to apply them as alternative deodorizing soaps in personal care products. Methods: Soaps were formulated with natural ingredients including lemon, aloe vera and honey. Foam stability and capac-ity tests as well as pH were determined for the soaps. Deodorizing effectiveness of the soaps was tested theoretically using minimum inhibitory concentration (MIC) test by screening them against pathogenic organisms causing body odour: bacteria (Staphylococcus aureus, Candida albican, Staphylococcus hominis, Strephotococcus mutant, Staphylococcus epidemidis) and fungi (Tinnea annum, Tinneapedis and Trycrophyton rubrum) using agar well diffusion method and poisoned food technique respectively while having Dettol soap and ketoconazole as controls. Results: The soaps had a maximum foam capacity of 150% and foam stability of 100% with pH values in the range of 9.3–9.8 and inhibited the growth of the tested organisms for up to 6days at 0.1g/ml concentration. Conclusion: The soaps are mildly alkaline, possess good foaming capacity and stability and have considerably significant antimicrobial properties that can impede the growth of the organisms.
Women’s empowerment is essential in improving maternal health. We analyse the geographical variability of women’s empowerment using data from the 2018 Nigeria Demographic and Health Survey. Eight indicators of empowerment were created using latent scores derived from factor analysis and used to assign the women into one of low, moderate or high category of empowerment. A geoadditive ordinal model was used to quantify the effects of demographic and geographical factors. The findings indicate that a determinant can have different effects on women’s empowerment indicator and women from majority of the northern states are less empowered based on all the indicators.
Background Soil-Transmitted Helminths are a group of parasites that cause gastrointestinal infections in humans and require the soil to develop into their infective forms. Ecological factors such as soil temperature, soil pH and rainfall patterns are, however, important determinants for the successful transmission of soil helminths as they play a major role in their abundance and survival in the soil. The study investigated the ecological factors influencing the transmission of soil-transmitted helminths in Ifedore district, Southwest Nigeria. Results Out of the one hundred and ninety-two (192) soil samples from the study area, one hundred and fifty-two 152 (79.2%) were positive for the presence of soil helminths’ larvae and ova. Higher occurrence of soil helminths was recorded during the rainy months ( n = 416) than during the months with no records of rainfall ( n = 290). Sandy soil had the highest number of soil helminths 285 (40.4%), while clay soil recorded the least 88 (12.5%). Soil temperature showed negative correlations with the occurrence of Ancylostoma duodenale ( r = − 0.53) and Strongyloides stercoralis larvae ( r = − 0.36), while soil conductivity showed positive correlations with the occurrence of Ascaris lumbricoides ( r = 0.28) and A. duodenale ( r = 0.34). Conclusion It is evident from the study that ecological factors played a significant role in the occurrence and abundance of soil-transmitted helminths. This research is important for predicting and monitoring soil-transmitted helminthiasis in endemic countries, and to devise effective control measures.
Background Green synthesis of nanoparticles with medicinal plants has inherent potential in the management of diabetes mellitus. This study synthesized Momordica charantia nanoparticles using silver nitrate to investigate the antidiabetic properties of this extract and the synthesized nanoparticles in vivo . Results The M. charantia nanoparticles used were synthesized biologically under ambient conditions from methanolic leaf extract of M. charantia using 1 mM concentration of aqueous silver nitrate and characterized using spectroscopic methods, FTIR and scanning electron microscopy . In vivo, the antidiabetic activity of M. charantia nanoparticle was assessed in streptozotocin-induced (65 mg/kg) rats. Rats were treated with M. charantia nanoparticle (50 mg/kg), aqueous leaf extract (100 mg/kg) metformin (100 mg/kg) and silver nitrate nanoparticle (10 mg/kg) for 21 days. Following treatment, rats were killed for biochemical analysis. Also, reverse transcript-polymerase chain reaction analyses of Takeda-G-protein-receptor-5, glucagon-like peptide-1, Insulin, superoxide dismutase, catalase and Nuclear factor-erythroid factor 2-related factor 2 (NRF2) - were carried out in the pancreas. A significant reduction in blood sugar levels was noted in rats treated with M. charantia nanoparticles. A reduction ( p < 0.05) of pancreas alanine transaminase, aspartate aminotransferase and alkaline phosphatase was observed when compared with diabetic untreated rats. M. charantia nanoparticles significantly increase the antioxidant enzymes in diabetic rats when compared with diabetic untreated rats. The decrease in the level of triglyceride, cholesterol and low-density lipoprotein was observed when compared with diabetic control rats and also a significant increase in the expression of Takeda-G-protein-receptor-5, glucagon-like peptide-1, insulin, superoxide dismutase, catalase and NFE2-related factor 2 genes was observed when compared with diabetic untreated rats. Conclusions Momordica charantia nanoparticles exhibited potential antidiabetic activity in the rat model of diabetes and thus may serve as a therapeutic agent that could be developed for medical applications in the future.
Background Food hygiene and safety is of utmost importance for public health, as it helps to protect the health of consumers from foodborne illnesses. Although, hundreds of plant species have been screened and tested for antimicrobial properties, the vast majority of these plants have not been adequately screened and evaluated. Considering the vast potentiality of plants as sources for antimicrobial drugs, the present research aimed to evaluate antioxidant, phytochemicals and determine the antibacterial activity of M. charantia (Linn) on pathogenic organism from Ready-to-eat food sold in Akure metropolis. Results Bacteria isolated from RTE food studied belong to the following genera; Staphylococcus, Streptococcus, Citrobacter, Pectobacterium, Klebsiella, Bacillus, Kocuria, Kluyveria, Serratia, Pantoea, Enterobacter and Salmonella . The antibiotic susceptibility pattern revealed that the Gram negative organisms were more susceptible to Gentamycin (30 µg) while Streptomycin (30 µg) was found to be more potent on Gram positive organisms. Water and ethanol extracts showed significant to moderate antibacterial activity toward all tested isolates except; Escherichia vulneris and Kluyveria intermedia which are both resistant to the aqueous extracts of M. charantia and the latter which was resistant to the ethanoic extract. The highest inhibitory activity was observed for Bacillus cereus with zone of inhibition of diameters 28 ± 0.29 l (mm), followed by Escherichia vulneris 25 ± 0.29 l (mm). DDPH% Inhibition has higher value in the water extract (69.21 ± 0.882 a ) while lower value was recorded in the ethanol extract (67.89 ± 0.155 b ). % Iron chelation has higher value in the ethanol extract (121.87 ± 0.882 a ) while lower value was recorded in the water extract (97.28 ± 0.155 b ). In all the concentration, vitamin C was higher in the ethanol extract than in the water extract. Conclusions The study revealed that all the Ready-to-eat food had a total bacterial count that are below potentially hazardous count although the presence of some microorganisms that are of health significance were observed. The study also confirmed that M. charantia (Linn) extracts had antibacterial effect against tested isolates from Ready-to-eat food sold in Akure metropolis. Based on the findings of this great research work, Mormordica charantia (Linn) possesses antioxidant activity that could prevent oxidative stress and degenerative diseases.
Abstract Background Chrysichthys nigrodigitatus (CN) and Oreochromis niloticus (ON) health status were investigated in Asejire Reservoir (AR) and Lagos Lagoon (LL), South-west Nigeria. Fish samples collected were separated into sexes. Growth pattern {length (cm); weight (g), Isometric index, condition factor (K)} were measured. Heavy metals (lead (Pb), iron (Fe), zinc (Zn), copper (Cu), and chromium (Cr) in ppm concentrations were determined in Lagos Lagoon and Asejire reservoir. Results Fish samples ranged at one male to one or two females. No significant difference in length and weight of O. niloticus between locations. Significant difference in weight occurred in C. nigrodigitatus between locations; highest condition factor was recorded in Asejire Reservoir O. niloticus, (ARON); lowest condition factor was observed in Asejire Reservoir C. nigrodigitatus (ARCN) as this indicated a negative allometric value, normal in Bagridae species. Male species possessed higher condition (K)—factor than female species within locations, between locations, between species, and within species, female C. nigrodigitatus having higher condition factor than male ARCN. Highest isometric value occurred in ARON and lowest in Lagos Lagoon C. nigrodigitatus (LLCN). Male ARON had highest isometric value, and O. niloticus species had higher isometric value (b ≤ 3) and positive allometric (b > 3); and C. nigrodigitatus has negative allometric (b
Background Odonata (dragonfly and damselfly) are particularly good indicators of freshwater ecosystem health. The constant disturbance of freshwater habitats can result in the reduction of Odonata species diversity. Changes in Odonata biodiversity are influenced by several human activities, such as agriculture, urbanization, input of pollutants in water and construction. This study was carried out to assess the abundance and diversity of Odonata, evaluate the physicochemical characteristics of water, and compare the community structure of Odonata at three selected sites along River Aponmu in Ipogun. Adult odonates were sampled and identified for 11 months using a sweep net, water samples were collected and some parameters were determined during the study period. Results A total of 906 specimens representing sixty-four (64) species and sixteen (16) genera in seven (7) families (Coenagrionidae, Lestidae, Platycnemididae, Chlorocyphidae, Calopterygidae, Libellulidae, and Gomphidae) were collected and identified. Of the 906 specimens, Libellulidae had the highest percentage composition (44%) with 395 individuals out of which Trithemis arteriosa (a pollution tolerant species) had the highest number of individuals (225) and Gomphidae had the lowest percentage composition (0.03%) with 1 individual. Most of the species collected are known for their tolerance to disturbed environments. They include Pseudagrion melanicterum , Paragomphus genei, and Orthetrum Julia . Aponmu area had the highest species diversity ( H ′ = 2.312) while Idi area had the least species diversity ( H ′ = 2.021). Alaasin area had the highest Simpson_ d value (0.8557) and the best taxa distribution (Evenness = 0.524; Equitability_ J = 0.7764) which makes the area more pristine than other sites while Aponmu area had the least distribution (Evenness = 0.3365; Equitability_ J = 0.6798). Analysis of variance (ANOVA) result of physicochemical parameters revealed that temperature (°C), pH, Dissolved Oxygen (mg/L), turbidity (NTU), Biochemical Oxygen Demand (mg/L), NO 3 (mg/L), and PO 4 (mg/L) did not show significant difference at the three sites while EC (µS/cm) and TDS (mg/L) which have moderately high mean values indicated significant difference at Aponmu area ( p < 0.05). T. arteriosa exhibited a weak negative correlation to both temperature and DO. Conclusions This study has provided information on Odonata assemblage at River Aponmu and infers based on the assemblage that the river may be somewhat polluted at the period the research was carried out. It is therefore recommended that efforts should therefore be taken to discourage water pollution in order to preserve the diversity of these insects and the water quality.
Background Honey is consumed for the derived benefits as sweetener, for healing wounds, skin burns, regulating blood sugar level, treatments of some ailments, etc. In Nigeria, adulteration of honey is a serious concern, and these adulterated or fake honeys have health implications. This research aims to compare and contrast the physicochemical qualities, functional health and medicinal values of honey samples from local honey parkers, supermarkets and beekeepers’ sales outlets in Southwest Nigeria. Results The darkness of the honey from the three sources was significantly different. The honey samples from the beekeepers have ash contents values of 0.25–1.0 in line with CAC and IHC, whereas 7(46.66%) and 2(13.33%) of honey samples from the supermarkets and local handlers/parkers, respectively, deviated from this standard values. The wound healing development after 8 days of topical treatment of incision wounds with honey from beekeepers shows a good development. 93.3% of the honeys sourced from the beekeepers, 58.06 and 66.05% of the honeys sourced from the supermarkets, and the local honey markets were found to be original. Conclusion The originality of honey for consumers’ satisfaction is dependent on the complimentary factors of physicochemical properties, functional health and medicinal values. These findings provide information for consumers’ awareness on categorization of honey as original/pure, adulterated and fake and the health implications.
Background Indiscriminate disposal of polyethylene materials has become a regular practice among developing nations of Africa, especially in Nigeria. This has resulted in environmental pollution; hence, this study investigates the microbial degradation of polyethylene obtained from a polyethylene dumpsite in South West, Nigeria, under static in vitro condition. Soil samples were analysed for mineral composition and physicochemical characteristics. The fungal isolates were screened for polyethylene degradation using minimal salt medium containing polyethylene as sole source of carbon and nitrogen for their ability to degrade polyethylene. Gravimetric analysis and Fourier-transform infrared spectroscopy (FTIR) were used to monitor the biodegradation of the polyethylene. Results Aspergillus flavus , A. nidulans , Penicillium chrysogenum , Mucor mucedo , Eurotium repens , A. fumigatus and Rhizopus stolonifer were enumerated. Mean microbial count ranged from 1.37 × 10 ⁷ to 8.2 × 10 ⁸ SFU/g. Individual weight loss was observed in the polyethylene strip cultured with P. chrysogenum (1%), E. repens (1%) and A. nidulans (2%). The changes observed in the FTIR spectra especially the polyethylene sample inoculated with A. nidulans confirm the significant role of fungi in polyethylene degradation. Hence, its usage in the treatment of polyethylene in the environment is a cheap eco-friendly alternative. Conclusion Aspergillus nidulans , E. repens and P. notatum play significant roles in the biodegradation of polyethylene which necessitates incorporating in polyethylene products waste management to foster a cleaner environment.
Background A lot of factors contribute to the breeding of Anopheles mosquitoes, especially vectors of malaria parasites. This indirectly contributes to the transmission of these parasites. The physicochemical parameters associated with the population of Anopheles larvae were studied for the period of twelve months in five selected communities in Akure North Local Government area of Ondo State. This study was carried out to understand the relationship between selected physicochemical parameters and the population of Anopheles larvae in the study area. Results Electrical conductivity was significantly correlated with the abundance of An. gambiae and An. funestus in the area ( r = 0.840 and 0.843, respectively). Abundance of Anopheles larvae follows a positive linear regression with electrical conductivity ( R ² = 0.691). The pH was not significantly different in all the communities ( P > 0.05); pH was negatively correlated with the abundance of An. gambiae and An. funestus larvae, r = − 0.530 and − 0.470, respectively. Anopheles larvae population decreases as pH increases ( R ² = 0.292). Total dissolved solid was positively correlated with the abundance of Anopheles larvae, though the correlation was weak ( r = 0.21). There was slightly increase in Anopheles larvae population as total dissolved solid increases ( R ² = 0.048). The abundance of Anopheles larvae increases as the dissolved oxygen, R ² = 0.552. Dissolved oxygen was not significantly correlated with Anopheles larvae population ( r = − 0.734 and − 0.789 , respectively), there was no significant difference across the study area ( P > 0.05). Temperature was significantly correlated with the abundance of Anopheles larvae ( r = 0.74). Anopheles larvae increase as the temperature increases ( R ² = 0.582). Conclusions The study revealed the important physicochemical parameters that influence the abundance of Anopheles larvae in the study area. Manipulation of these important parameters could help in reducing the population of the immature stages of this vector.
Hot working processes are notable processes for transforming as-cast or wrought metallic materials, including shape memory alloys (SMAs), into semi-finished or finished products for various industrial applications. It is expected that this processing aimed at improving the workability of the SMAs, should preserve their mechanical strength and functional characteristics – in particular, their shape memory characteristics. In conventional alloys, material properties have been tailored through careful control of the hot deformation process parameters. In the case of SMAs, analyses of information on hot deformation processing and the impact on flow behaviour, mechanical and shape memory features, has not been comprehensively covered in review literatures. This review attempts to fill this gap through a systematical analyses of hot deformation behaviour of NiTi, Cu-based and Fe-based SMAs. The observations indicated that plastic flow progressed by work hardening, softening and steady-state flow mechanisms, and dynamic recovery and dynamic recrystallization, dominated as deformation mechanisms. Their prevalence was largely shape memory alloy (SMA) type, composition, strain rate and deformation temperature, dependent. The strength, hardness and ductility of the SMAs generally improved after hot deformation processing; however, the transformation temperatures and shape memory properties, were found to decrease in most cases (albeit, the Cu based SMAs exhibited improved superelasticity).
The consumption of imported dairy products is high especially in developing countries including Nigeria where little or no milk is produced locally which makes the products expensive, out of reach to common consumers and also inconvenient for lactose intolerance and vegans. Soymilk, as plant-based milk was substituted for cow’s milk in parts and in whole for the production of yoghurt and the effect of substitution was evaluated on the minerals, vitamins, microbial, and sensory properties of the products using the established methods. Significant differences ( p < 0.05) exits among the yoghurt samples in the micronutrient contents. The soymilk substitution produced yoghurts with trace/macro mineral contents’ range of 0.14–28.50 mg/100 g and vitamin contents (ranged 0.02–0.43 mg/100 g) that were of comparable range of values with the yoghurt made with 100% cow’s milk (0.21–29.60 mg/100 g minerals and 0.05–0.58 mg/100 g vitamins). Generally, no significant difference ( p < 0.05) was observed in most of the sensory attributes evaluated (range 8.00–8.01) in the entire samples (except in the 100% soymilk yoghurt). The microbial analysis proved the safety of the entire products for consumption. These showed the positive effect of substituting soymilk for cow’s milk at all the levels used, thus, the lactose intolerance and vegans can find alternative to dairy yoghurt in the 100% soymilk substitution and enjoy the functional health benefits of yoghurt. Also, the total dependence on importation of dairy milk and cost of production of composited milk yoghurt could be reduced to improve the nation’s economy and make the product economically accessible to common man. Graphical abstract
The synthesis of cadmium sulfide (CdS) and zinc sulfide (ZnS) thin films materials was carried out in three electrode configurations on electrically conductive fluorine doped tin oxide (FTO) substrates. The materials were synthesized due to their wide range of applications in photovoltaic devices. Despite the potentials of the materials in heterojunction-based devices, little efforts have been made to place the materials side by side to be able to suggest the most environmentally friendly with good potentials for solar cell applications. In this paper, we synthesized and characterized the materials using electrodeposition (ED) technique for materials’ synthesis, X-Ray Diffractometer (XRD) for structural properties, Scanning Electron Microscopy (SEM) for morphological properties, Energy Dispersive X-ray (EDX) with X-Ray Fluorescence (XRF) for elemental composition and Ultraviolet Visible spectrophotometer (UV–vis) for optical properties. The XRD results show an increase in the crystallite sizes of the materials with increasing cathodic voltages from 10.30 to 15.20 nm; the SEM results show evenly distributed and adherent materials on the substrate; the EDX and XRF results show the qualitative and quantitative elements present; and the UV-vis results show a decrease in the energy band gap with increasing cathodic voltage of both CdS and ZnS thin films from 2.53 to 2.29 eV and 3.78–3.56 eV, respectively.
Human exposure to ionizing radiation in the environment is mainly due to naturally occurring radionuclides in the soils, building materials and rocks, but the level may vary depending on the anthropogenic activities prevalent in each location. Presently, in Nigeria, there are concerns due to environmental health implications of all sorts of mineral mining and processing spreading across the southwestern states of the country. This work determines the activity concentrations of naturally occurring radionuclide materials (NORMs) in the farmland soil with the aim of evaluating the radiation hazards. A total of 200 composite soil samples were taken from five states in the southwest of Nigeria, close to active mining sites at the root (0.2 m) and at deep planting zones (0.5 m) for analysis by gamma-ray spectrometry using NaI(Tl) detector. The activity concentrations of natural radionuclides in the composite soil samples were determined to vary in the order of ⁴⁰ K > ²³²Th > ²²⁶Ra/²³⁸U for all locations. In contrast to the other locations, Olode and Igbokoda had average radium equivalent activities (Raeq) to be 1.6 and 1.8 times, respectively, higher than the reference limit of 370 Bqkg⁻¹. The estimated excess life cancer risk values were lower than the 0.29 × 10⁻³ global average value for soil by United Nations on Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) and International Commission on Radiological Protection (ICRP). Negative and low skewness values of 0.61 and 1.20 were obtained for ⁴⁰ K in Itagunmodi, and also 0.47 and 0.66 for ²³²Th were obtained in Sagamu. The kurtosis analysis of the activity concentrations was low and negative for soil at Itagunmodi for ⁴⁰ K and ²²⁶Ra/²³⁸U; Olode for ⁴⁰ K and ²³²Th; and Igbokoda for ²²⁶Ra/²³⁸U and ²³²Th where mining activities are commonly practiced. The variation in the results has been attributed to different agriculture practices and artisanal mining operations in each location.
This study aims to see how supplementing broiler chickens with Ficus exasperata leaf powder (FELP) and vitamin C affects carcass characteristics, brain and meat oxidative enzymes and cholesterol levels in tropical conditions. Three hundred thirty-six-day-old chicks (comprising of 168 Cobb 500 breed chicks and 168 Arbor Acre breed chicks) of broiler chicks weighing 37.40 ± 0.45 g were assigned to 8 experimental diets of 7 replicates (6 birds/replicate; 42 birds/treatment). Diets 1 and 2 were not supplemented, while diets 3 and 4 had vitamin C (200 mg/kg of basal diet) supplementation. Then, diets 5 and 6 received 1 g FELP/kg of basal diet supplementation each while diets 7 and 8 had 1 g FELP/kg of basal diet + 200 mg of vitamin C. The breed and FELP affected (P < 0.05) the dressing percentage. The relative weights of the gizzard and heart were affected (P < 0.05) by the vitamin c and FELP, while the lung weight was affected by vitamin C. The proventriculus was affected by the breed, FELP and vitamin c. The brain catalase and glutathione peroxidase increased with vitamin c and FELP supplementation while catalase and glutathione peroxidases were higher in CO. Vitamin c and FELP reduced the meat lipid oxidation but increased the glutathione peroxidase and catalase. Conclusively, dietary supplementation with 200 mg/kg of vitamin C and 1% FELP could increase the brain’s antioxidant capacity and improve the meat quality of broiler chickens.
A succinct exploration of business sustainability via an e-commerce platform was examined in the study. Its myth and reality permeate its adoption, use, and acceptability within the context of our economic, social, and environmental assumptions were also validated. To achieve its aim, exploratory methodology, which compared benefits and challenges among the three main elements – business, users, and authority; in the application of the e-commerce platforms and channels in the country was examined. The result showed mixed outcomes. On one side, there are huge benefits to businesses in adopting e-commerce while on the other, challenges such as optimal patronage due to cultural trust gaps, user-confidence, poor connectivity, and government selective policy drive. Based on this outcome, it is concluded that; business sustainability via e-commerce in the country is relatively weak and can be improved upon if, end-users policy drive is taken into serious consideration.
Institution pages aggregate content on ResearchGate related to an institution. The members listed on this page have self-identified as being affiliated with this institution. Publications listed on this page were identified by our algorithms as relating to this institution. This page was not created or approved by the institution. If you represent an institution and have questions about these pages or wish to report inaccurate content, you can contact us here.
3,135 members
Olurotimi Akintunde Dahunsi
  • Department of Mechanical Engineering
Olusegun V. Oyetayo
  • Department of Microbiology
Ajayi Vincent
  • Department of Meteorology and Climate Science
Adekunle Anthony Ogunjinmi
  • Department of Ecotourism and Wildlife Management
Ukwenya Okoliko Victor
  • Department of Human Anatomy
Information
Address
Ilesa-Owo Expressway, 340001, Akure, Ondo State, Nigeria
Head of institution
Prof. J. A. Fuwape
Website
www.futa.edu.ng
Phone
+234 803 333 0057