679 research outputs found

    Correlations in Scattered Phase Singular Beams

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    We discuss about the correlations present in the scattered phase singular beams and utilize them for obtaining the corresponding mode information. We experimentally generate the coherence vortices using the cross-correlation functions between the speckle patterns and validate them with the exact analytical expressions. We also explore their propagation characteristics by considering their geometry along with their divergence. We utilize the autocorrelation measurements of speckle patterns for obtaining the mode information. Further, we study the correlations present in scattered perfect optical vortices which lead to a new class of coherence functions, Bessel-Gauss coherence functions, and utilized for generating the non-diffracting random fields, i.e. propagation invariant fields. We utilized these correlation functions, which are order-dependent although the speckle patterns are order-independent, for encrypting the information which has higher advantage than normal random optical fields

    Evaluation of ethanolic and aqueous extract of Clitoria ternatea for antimicrobial activity

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    In the recent years, there has been an emerge and spread of infectious diseases and also developing resistance to the antibiotics, so there is a great concern to find potentially effective, safer natural alternative for the infectious diseases. The present study was focused on the antimicrobial activity of ethanol and aqueous extract of Clitoria ternatea root. The in-vitro antimicrobial study was carried out against bateriea viz. Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and fungus viz. Aspergilus niger, Candida albicans by the cup-plate method. The extracts of Clitoria ternatea roots were subjected to preliminary phytochemical screening for detection of chemical constituents present in them. Preliminary phytochemical screening study revealed the presence of alkaloids, glycosides, tannins, phenol and flavonoids. The highest potential was observed in the ethanol extract of Clitoria ternatea roots. This study suggested that solvent polarity determined the phenol and flavonoid content significantly, hence affecting the antimicrobial activity. This plant extract which proved to be potentially effective can be used as a natural alternative for preventives to control infectious diseases causing due to the tested microorganisms

    Evaluation of ethanolic and aqueous extract of Clitoria ternatea for antimicrobial activity

    Get PDF
    194-198In the recent years, there has been an emerge and spread of infectious diseases and also developing resistance to the antibiotics, so there is a great concern to find potentially effective, safer natural alternative for the infectious diseases. The present study was focused on the antimicrobial activity of ethanol and aqueous extract of Clitoria ternatea root. The in-vitro antimicrobial study was carried out against bateriea viz. Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and fungus viz. Aspergilus niger, Candida albicans by the cup-plate method. The extracts of Clitoria ternatea roots were subjected to preliminary phytochemical screening for detection of chemical constituents present in them. Preliminary phytochemical screening study revealed the presence of alkaloids, glycosides, tannins, phenol and flavonoids. The highest potential was observed in the ethanol extract of Clitoria ternatea roots. This study suggested that solvent polarity determined the phenol and flavonoid content significantly, hence affecting the antimicrobial activity. This plant extract which proved to be potentially effective can be used as a natural alternative for preventives to control infectious diseases causing due to the tested microorganisms
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