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Eltahir M.A.,Blue Nile University | Dafa-Alla A.F.A.,Garden City College
Proceedings - 2013 International Conference on Computer, Electrical and Electronics Engineering: 'Research Makes a Difference', ICCEEE 2013 | Year: 2013

The growth of the Internet is increasing rapidly and the use of websites and web-based systems has become very common. The main problem that faces any website admin or any web application system is data increase per-second, which is stored in different types and formats in server log files about users, their future needs and maintains the structure and content of website or web services according to their previous data. Web usage mining aims at discovering useful information or knowledge from usage data registered in log files, based on primary kinds of data used in the mining process. By using one of the web mining techniques, this paper uses a web usage mining technique to procure knowledge from web server log files where all user navigation history is registered. © 2013 IEEE.

Vinothina V.,Garden City College | Sridaran R.,Marwadi Education Foundations Group Of Institutions
International Journal of Applied Engineering Research | Year: 2014

Cloud computing has become an integral solution for providing a flexible, on-demand computing infrastructure for many categories of applications. The deadlineconstrained workflow application deserves a special mention. In the case of clouds, being one of the sensitive issues, resource allocation becomes much more complicated. This is because of the inherent possibility of multiple users trying to gain access to cloud resources at the same time. Hence efficient resources allocation is a daunting task for the service provider. This paper proposes two algorithms namely MCPFC and HADC, which aim at enhancing the efficiency of the process of resource allocation with minor variations in their approaches. The results of proposed algorithms on real world scientific applications have shown significant improvements in terms of resource utilization. © Research India Publications.

Aruna J.,Annamalai University | Aruna J.,Garden City College | Prakash M.,Annamalai University | Kumar B.S.,Annamalai University
Indian Journal of Agricultural Sciences | Year: 2013

Gamma rays, Ethyl Methane Sulphonate (EMS), diethyl sulphate (DES) were employed and M1, M2 and M3 generations were studied for the characters, viz. days to 50% flowering, plant height, number of branches, fruits per plant, fruit length, fruit girth, fruit weight and fruit yield per plant. A significant reduction in seed germination, shoot length and RL were observed with increase in concentration of mutagens. Among the mutagens gamma rays were found to bring more reduction for all the major traits studied. The mean performance showed significant increase in the number of branches, fruits per plant, fruit length and fruit yield per plant in M2 and M3 generations. Whereas, days to 50 per cent flowering and plant height showed a slight deviation from the control in the treated populations.

Azadirachtin-A (Aza-A), a tetranortriterpenoid, found in minuscule amounts in the Neem seed-kernels, has proved to be a potent biopesticide. Given the vast biodiversity of Azadirachta indica (Neem) in India, this study is an overview of four main aspects that corroborate with each other in identifying elite Neem chemotypes based on their Aza-A content. These biomarkers included mycofloral, tissue-cultural, ecomorphometrical and molecular analyses on accessions from five ecogeographically different regions in Andhra Pradesh, India, which high-lighted the characteristics of trees that yielded the highest Aza-A. In essence, extremely-arid-alkaline regions with maximum soil pH (8.05) yielded trees with the highest amount of this biopesticide. Likewise, both VAM and soil fungal diversity and frequency exhibited maximal values in their rhizosphere, whereas it exhibited the least values for percentage moisture and also for several micronutrients measured (P2O5, Zn, Fe and Cu). In vitro studies on seeds with high versus low Aza-A content gave sturdier seedlings in the former; with profusely coiled roots and fibirillar foliage in tissue-culture; in addition to these seeds being more viable. Furthermore, their cotyledons alone exhibited significant amount of Aza-A, as measured by HPLC. Besides this significant difference, the impact of growth factors culminated not only in the variations of several secondary metabolites, but also differences in DNA patterns from various parts of a single in vitro plant. Ecomorphometric analyses clearly indicated that at least eight parameters (seed diameter, soil pH, percentage moisture, K2O, P2O5, Zn, lower lobe serrations and upper-lobe-distance of leaves) were significantly related to the quantitative variations in Aza-A. Finally, PCR analyses exhibited a habitat-based molecular concordance of ISSR and FISSR profiles with Aza-A content among the Neem chemotypes. Their relatedness was based on dendrograms constructed by UPGMA algorithms using similarity-index-values. © 2011 Prof. H.S. Srivastava Foundation for Science and Society.

Prasad R.G.S.V.,Nano Research for Advanced Materials and Technologies | Phani A.R.,Nano Research for Advanced Materials and Technologies | Phani A.R.,Garden City College | Phani A.R.,Mazumdar Shaw Cancer Center | And 7 more authors.
Journal of Biomedical Nanotechnology | Year: 2015

In this work, the biocompatibility and antibacterial activities of novel SnO2 nanowire coatings prepared by electron-beam (E-Beam) evaporation process at low temperatures were studied. The nanowire coatings were characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and X-ray diffraction (XRD) methods. The results of in vitro cytotoxicity and cell proliferation assays suggested that the SnO2 nanowire coatings were nontoxic and promoted the proliferation of C2C12 and L929 cells (>90% viability). Cellular activities, cell adhesion, and lactate dehydrogenase activities were consistent with the superior biocompatibility of the nanowire materials. Notably, the nanowire coating showed potent antibacterial activity against six different bacterial strains. The antibacterial activity of the SnO2 material was attributed to the photocatalytic nature of SnO2. The antibacterial activity and biocompatibility of the newly developed SnO2 nanowire coatings may enable their use as coating materials for biomedical implants. Copyright © 2015 American Scientific Publishers. All rights reserved.

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