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47 results for “Umar A. Umar”
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Research ArticleOpen accessIn the author namesIsolation and Characterization of Chemical Constituents, Cytotoxicity, Antibacterial and Antioxidant Activity of the Compounds from Leptadenia hastata Roots Extract ByIsaac John Umaru, Hauwa A. UmaruThe aim of this work was to extract, isolate and characterise the chemical constituent from Leptadenia hastata roots. Fresh roots were washed and dried and was subjected to sequential maceration in polar and non-polar solvents. And introduced into rotary evaporator to concentrate the extract. Isolated compound was subjected to Thin Layer Chromatography and spectral analysis such as column and UV-Visible … …American Journal of Biochemistry and Biotechnology, Vol. 15, Issue 4 · 24 Dec 2019 · 7,959 accessesView PDFCite
Research ArticleOpen accessIn the author namesWNBLI - A Multifarious Liability Examination for Wireless Sensor NetworksTamilarasi B., UmaRani R.Wireless communications has completely revolutionized the living environment, just as personal computers forever altered the way of working in the 1980’s and the Internet dramatically changed the obtainment and accessing way of information in the 1990’s. Wireless sensor networks are evolving to a new level. The Failure liability is a very prominent problem in Wireless Sensor Network (WSN) research. Failure … …Journal of Computer Science, Vol. 14, Issue 6 · 8 May 2018 · 7,572 accessesView PDFCite
Research ArticleOpen accessIn the author namesAntifungal Potential of Leptadenia Hastata Against Some Pathogenic FungiIsaac John Umaru, Fasihuddin A. Badruddin, Henry Y. Wakawa et al.The objective of this study was to evaluate if the plant extract could provide antifungal potential against some pathogenic fungi. Extract of Dichloromethane solvents was used for disc diffusion assay. The inhibitory concentration of the extract was performed by broth dilution method and zone of inhibition was studied by disc diffusion method at the concentration of 25, 50, 100, 250, … …American Journal of Biochemistry and Biotechnology, Vol. 14, Issue 1 · 9 Mar 2018 · 10,158 accessesView PDFCite
Research ArticleOpen accessIn the author namesAMELIORATIVE EFFECT OF HIBISCUS SABDARIFFA LINN ON SUBCHRONIC CHLORPYRIFOS-INDUCED ALTERATIONS IN SEX AND THYROID HORMONES IN MALE WISTAR RATSShittu Muftau, Olatunji Omobolanle Aisha, Suleiman Folorunsho Ambali et al.Studies have shown that Chlorpyrifos (CPF), an Organophosphate (OP) insecticide alters both sex and thyroid hormones. Apart from inhibiting Acetylcholinesterase (AChE) activity, CPF has been shown to cause oxidative stress. The antioxidant potentials of many flavonoid-containing plants are increasingly being exploited in the therapy of many infectious and non-infectious diseases. Hibiscus Sabdariffa (HS) is one of the most widely used … …American Journal of Pharmacology and Toxicology, Vol. 9, Issue 1 · 20 Feb 2014 · 9,097 accessesView PDFCite
Research ArticleOpen accessIn the author namesTasks Scheduling using Ant Colony OptimizationA. P. Shanthi, G. Umarani Srikanth, V. Uma Maheswari, Arul SiromoneyProblem statement: Efficient scheduling of the tasks to heterogeneous processors for any application is critical in order to achieve high performance. Finding a feasible schedule for a given task set to a set of heterogeneous processors without exceeding the capacity of the processors, in general, is NP-Hard. Even if there are many conventional approaches available, people have been looking at … …Journal of Computer Science, Vol. 8, Issue 8 · 25 Jul 2012 · 7,668 accessesView PDFCite