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Diversity and Distribution of Anomalures and Squirrels in Oban Hills of Nigeria
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Efficacy of three botanicals in cowpea field, Oyo state, Nigeria
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Page will reload when a filter is selected or excluded.- Natural Sciences 163 results 163
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- Saponins are ubiquitous phytochemicals widely reported to be present in many species of plants and animals. Some saponin containing plants, mainly legumes, have been used as animal feed, but others are toxic. In this review, the biochemical, physiological and pharmacological effects of saponins in humans and animals have been highlighted. Physiological and biochemical effects examined include the effects on biological membranes, gastrointestinal absorption, blood and liver cholesterol, enzymes and general body metabolism, reproductive, antioxidant and free-radical scavenging effect, smooth muscle activity and effects on ruminant digestion. Pharmacological effects of saponins such as anti-inflammatory, diuretic, hypoglycaemic, antidiabetic, antiulcer and anti-ageing effects are also examined. From the literature reviewed, it can be concluded that saponins, in general, are toxic when administered intravenously but possess a lot of therapeutic potentials especially as cytotoxic agents. 2 results 2
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- "Efficiency of water treatment system grossly depends on the attenuation capacity of the filter media. Under natural condition, this capacity depends on the effects of physical, chemical and biological factors of which past works revealed few observation on physical factors under an explicit and simple experimental designs. In this work, we examined the variation of volume flux rate and porosity on the attenuation of migration of bacteria in sand media as can be applicable to water treatment system. Movement of Escherichia coli through matrix of different porosities in trends was studied in down – flow column experiment under natural and intermittent transport. Porosity values range between 0.28 and 0.42 while volume flux rate range between 0.82 x 10-4 m/s and 195.93 m/s respectively. The plot of normalized concentration versus volume flux was best fitted with polynomial curve of second degree which shows that attenuation of migration was partially varies with volume flux and not linear as revealed in past works. However attenuation of bacteria migration depends on the porosity as a function of depth ‘ɸ(x)’. " 1 results 1
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