Baoku I.G.,Crescent University |
Israel-Cookey C.,Rivers State University of Science And Technology |
Olajuwon B.I.,Abeokuta Federal University of Agriculture
Journal of Applied Fluid Mechanics | Year: 2012
The paper examines transient MHD Couette flow of an electrically conducting fluid in the presence of an applied transverse magnetic field and thermal radiation through a porous medium. The dimensionless governing equations of the flow are coupled non-linear partial differential equations and are solved by an efficient and unconditionally stable finite difference scheme of Crank-Nicolson type. The influence of the medium permeability is also assessed. The velocity and temperature profiles for the flow are studied for various interesting parameters of Prandtl number, Nahme number and Hartmann number, and are presented graphically. The results show that the thermal radiation has appreciable influence on the flow.
Jimoh W.A.,Crescent University |
Fagbenro O.A.,Federal University of Technology Akurre |
Adeparusi E.O.,Federal University of Technology Akurre
Electronic Journal of Environmental, Agricultural and Food Chemistry | Year: 2011
Raw, cooked and toasted meals from Sesame (Sesamum indicum) seeds were analysed for proximate, mineral and anti-nutrient composition and the changes accompanying chemical composition when processing sesame seedmeal were investigated. There was significant (P<0.05) variation in the crude protein, crude lipid, crude fibre and ash content of undeffated and defatted sesame seed meal. Defatting the dehulled samples of the sesame seed meal increased its protein contents. There was significant (P<0.05) increase in protein content of the cooked and toasted seed meal when compared with that of the raw sample. While magnesium, sodium and potassium were the most abundant macro minerals in sesame seedmeal, Iron was the most abundant micro mineral in sesame seed meal used. A significant (P<0.05) reduction was observed in the mineral composition with processing time. As was observed in the raw samples, copper was not detected in the sample cooked and toasted for 30 minutes. A reduction in mineral contents of the cooked samples was observed. Raw sesame seed meal contains the highest level of anti-nutrients with respect to Trypsin Inhibitor (TIA), lectin, tannin, phytin, saponin and oxalate. Cooking and toasting reduced anti-nutrient contents of sesame seedmeal at lower cooking and toasting time. TIA and lectin contents were removed at higher cooking time while only lectin content was completely eliminated at 30 minutes toasting time.
Alegbeleye W.O.,Abeokuta Federal University of Agriculture |
Obasa S.O.,Abeokuta Federal University of Agriculture |
Olude O.O.,Abeokuta Federal University of Agriculture |
Otubu K.,Abeokuta Federal University of Agriculture |
Jimoh W.,Crescent University
Aquaculture Research | Year: 2012
A preliminary feeding trial was conducted to evaluate the nutritive value of adult variegated grasshopper (Zonocerus variegatus) meal (VGM) as a replacement for fish meal in the diets of Clarias gariepinus fingerlings. Proximate analysis result showed that VGM had 61.50% crude protein, 6.87% crude lipid, 27.33 NFE and 9.35% chitin. Five isonitrogenous (30%) and isoenergetic (18.42MJkg -1) diets were formulated in which VGM progressively replaced fishmeal at five inclusion levels (0%, 25%, 50%, 75% and 100%). The best performance in terms of % weight gain was observed in the group of fish fed ED 1 (25% inclusion level) and was not significantly different (P>0.05) from the groups fed the control diet. Weight gain and specific growth rate were significantly lower (P<0.05) in the group fed ED 4 (100%VGM). Feed conversion ratio and protein efficiency ratio were numerically but not significantly different (P>0.05) among the different groups. The results indicate that apparent protein and lipid digestibility were high at all levels, although there were decreases with an increase in the inclusion levels. Carcass lipid decreased with an increase in the inclusion level of VGM. The VGM can replace fish meal up to 25% in the diets of C. gariepinus fingerlings without any adverse effect on growth and nutrient utilization. © 2011 Blackwell Publishing Ltd.
Wani P.A.,Crescent University |
Khan M.S.,Aligarh Muslim University
Bulletin of Environmental Contamination and Toxicology | Year: 2013
Pollution of the biosphere by heavy metals is a global threat that has accelerated dramatically since the beginning of industrial revolution. The aim of the study is to check the resistance of RL9 towards the metals and to observe the effect of Rhizobium species on growth, pigment content, protein and nickel uptake by lentil in the presence and absence of nickel. The multi metal tolerant and plant growth promoting Rhizobium strain RL9 was isolated from the nodules of lentil. The strain not only tolerated nickel but was also tolerant o cadmium, chromium, nickel, lead, zinc and copper. The strain tolerated nickel 500 μg/mL, cadmium 300 μg/mL, chromium 400 μg/mL, lead 1,400 μg/mL, zinc 1,000 μg/mL and copper 300 μg/mL, produced good amount of indole acetic acid and was also positive for siderophore, hydrogen cyanide and ammonia. The strain RL9 was further assessed with increasing concentrations of nickel when lentil was used as a test crop. The strain RL9 significantly increased growth, nodulation, chlorophyll, leghaemoglobin, nitrogen content, seed protein and seed yield compared to plants grown in the absence of bioinoculant but amended with nickel The strain RL9 decreased uptake of nickel in lentil compared to plants grown in the absence of bio-inoculant. Due to these intrinsic abilities strain RL9 could be utilized for growth promotion as well as for the remediation of nickel in nickel contaminated soil. © 2013 Springer Science+Business Media New York.
Wani P.A.,Crescent University |
Khan M.S.,Aligarh Muslim University
Pakistan Journal of Biological Sciences | Year: 2014
Heavy metal contamination has accelerated due to the rapid industrialization world wide. Accumulation of metals in excess can modify the structure of essential protein or can replace an essential element. Bradyrhizobium strains showed tolerance to cadmium, chromium, nickel, lead, zinc and copper. All the isolates showed maximum tolerance towards lead and zinc which was followed by nickel and chromium. These strains also showed tolerance towards most of the antibiotics. Bradyrhizobium strains were also tested for their Plant Growth Promoting (PGP) substances, all isolates produced good amount of indole acetic acid and were positive for ammonia but only three strains were positive for HCN and siderophore (RM1, RM2 and RM8), the rest isolates showed negative result. Based on the above intrinsic abilities of Bradyrhizobium species, these strains can be used for the growth promotion, as well for the detoxification of the heavy metals in metal polluted soils. © 2014 Asian Network for Scientific Information.