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Search Results: 1 - 10 of 554455 matches for " A.K. Khamis "
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Volterra-Fredholm Integral Equation with Carleman Kernel in Position and Time
A.K. Khamis,M.A. Al-Ameen
Journal of Engineering and Applied Sciences , 2012,
Abstract: In this study, we introduce an efficient method to find and discuss an approximate solution of the integral equation of type Volterra-Fredholm in the space L2[a, b] x [0, T]. The kernel of Fredholm is considered in position and represented in a logarithmic form, while the kernel of Volterra is taken in time as a continuous function. Using a numerical method we obtain a linear system of Fredholm integral equations is position which will be solved.
Preliminary Studies on the Bioactivity of Secondary Metabolites from Aureobasidium pullulans and Emericela rugulosa
A.K. Onifade
Journal of Animal and Veterinary Advances , 2012,
Abstract: In the study of searching for bioactive fungal metabolites, crude extracts of Aureobasidium pullulans and Emericela rugulosa were screened in vitro against eleven human pathogens. The production medium changed from slightly basic (pH 7.21) to slightly acidic (pH 6.72) as fermentation progressed till the 12th day. The wet biomass of the fungal mycelia as well as the dry weights of the crude extracts increased while the amounts of glucose in the growth medium reduced with a corresponding increase in incubation period. Contact bioautographic assay showed that the extracts exhibited broad-spectrum antimicrobial potency. Activity against some human pathogenic organisms including Gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus), Gram-negative bacteria (Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Salmonella typhi) and fungal strains (Candida albicans, Trichophyton concentrum, T. mentagrophytes, T. rubrum and T. torulans) is discussed. Bioactivity of the extracts, as depicted by zones of inhibition in agar well diffusion assay, was found to increase as the fermentation days increased, irrespective of the fungal biosource of the metabolites. In most studies, A. pullulans grew faster and caused higher inhibition than E.rugulosa.
Treatment of Anoestrus Cows with Diluted Logul’s Iodine and Massage on Reproductive Organs-uncontrolled Case Study
A.K. Sarkar
Journal of Animal and Veterinary Advances , 2012,
Abstract: Study on the reproductive disorders was carried out on 20 cows in order to relieve cows from suffering of the diseases in a cheaper way, as the diseases were the main problem in the study areas. Massage on ovaries by Palpation method was successfully applied, Wash the uterus and intraveinous injection of 30c.c 10 times diluted logul’s Iodine at two weeks interval for treatment of affected cows suffering from anoestrus. Use of logule’s Iodine and palpative massage on ovaries, rupture of the mature follicles, was very effective and less expensive. It would be the profitable method for the farmers. In case of massages and Iodine treatment, the conception rate was high (81%).
Research Trends: Bioactive Metabolites of Fungal Origin
A.K. Onifade
Research Journal of Biological Sciences , 2012,
Abstract: The need to combat human, agronomic and veterinary diseases or pests has sustained research interests directed at finding new medications from under-exploited biodiversity. The adoption of bioassay techniques, which correlate with prevention, inhibition and reversal of diseases or elimination of pests in screening natural products for bioactive compounds, is critical to the discovery of new medications. This study focuses on the chemistry and biological activity of fungal secondary metabolites that connect academia with industry. It discusses the technical skills needed to find biologically active compounds from fungi.
Effect of Essential Oils from Five Ocimum sp. on the Pathogenicity of Pratylenchus brachyurus (Godfrey) in Tomato
A.K. Onifade
Agricultural Journal , 2013,
Abstract: The effect of the essences from hydrodistillation of five Ocimum sp. on Pratylenchus brachyurus was compared with carbofuran in in vitro and greenhouse trials. Nematotoxic concentrations of oil were linearly proportional, but varied from one plant to another. At 25-100 g mL 1, the oils of O. gratissimum and O. basillicum completely inhibited egg hatching and larval survival of nematodes after 24 h. 60.4% of nematode larvae were ruptured following a 22 h exposure to a binary combination of O. gratissimum and O. basillicum oils at 100 g mL 1. The undiluted broth obtained after the isolation of O. gratissimum oil induced 66.1% larval mortality and inhibited egg hatching by 62.8%. The essential oil of Ocimum forskolei exhibited a weaker toxicity; inactivating most of the nematodes at 100 g mL 1. Essential oils of O. canum and O tenuiflorum had no effect on the nematode even at 100 g mL 1. The nematicidally potent essential oils of O. gratissimum and O. basillicum were not phytotoxic to tomato plants at 6.25-100 g mL 1. A significant (p< 0.05) improvement in growth of potted tomato plants in the greenhouse was associated with the essential oils of O. gratissimum and O. basillicum. Plants receiving these treatments were taller and greener, developed fewer root galls and produced more fruits than plants treated with the essential oil of O. forskolei. Amending soil with a binary combination of O. gratissimum and O. basillicum oils at 100 g mL 1 was significantly more efficacious than either oil at 100 g mL 1 and compared with carbofuran treatment at 100 g mL 1. The observed differences in the nematicidal potential of the control plants are natural in terms of the overall chemical composition of the essential oils.
Study of Nicotine Poisoning in a Dog-A Case Report
A.K. Sarkar
Pakistan Journal of Biological Sciences , 2004,
Abstract: NOT AVAILABLE
East Greenland Caledonides: stratigraphy, structure and geochronology: Contents, Preface
Higgins A.K.
Geological Survey of Denmark and Greenland Bulletin , 2004,
Abstract:
Exploration history and place names of northern East Greenland, Map 5
Higgins, A.K.
Geological Survey of Denmark and Greenland Bulletin , 2010,
Abstract:
Exploration history and place names of northern East Greenland, Map 4
Higgins, A.K.
Geological Survey of Denmark and Greenland Bulletin , 2010,
Abstract:
Factors effecting water-vapor transport through fibers (a brief review)
Haghi A.K.
Theoretical and Applied Mechanics , 2003, DOI: 10.2298/tam0304277h
Abstract: This review is a brief account of R& D results generated from drying behavior of carpets. First of all, the mathematical rela-tions are reviewed and then, they are developed in detail, which may be used to describe the moisture sorption mechanisms of car-pet. The effect of important parameters during the drying pro-cess are discussed and the mathematical relations are formulated to illustrate the range of their applications. However, challenges remain to be overcome through innovations, R& D investigations and advanced engineering, especially in designing process control devices.
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