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We explored the application of three different aqueous solutions derived from Black Tea leaf extracts in the synthesis of Au and Ag nanoparticles. The plain tea leaf broth, as well as that containing the ethyl acetate extract of tea leaves, were found to be extremely efficient, leading to rapid formation of stable nanoparticles of various shapes: spheres,(More)
In this paper, we have demonstrated for the first time, the superb efficiency of aqueous extract of dried leaves of mahogany (Swietenia mahogani JACQ.) in the rapid synthesis of stable monometallic Au and Ag nanoparticles and also Au/Ag bimetallic alloy nanoparticles having spectacular morphologies. Our method was clean, nontoxic and environment friendly.(More)
In an attempt to find natural, environmentally benign, green-chemical agents for the synthesis of metal nanoparticles, we have demonstrated for the first time the excellent efficiency of ethanol and water extracts of a natural, non-toxic material, Indian propolis and two of its chemical constituents, pinocembrin and galangin in the rapid synthesis of stable(More)
A dramatic reduction in the excited-state intramolecular proton transfer (ESIPT) rate is observed for 3-hydroxyflavone (3-HF) within the nanoscopic polar domains of Aerosol-OT (AOT)/n-heptane reverse micelle solutions. It is attributed to the formation of intermolecularly hydrogen-bonded 3-HF:AOT complexes, which cause a significant disruption of(More)
A subacute toxicity study of acetamiprid was undertaken in 72 female Wistar rats randomly divided into four groups (18 each). Acetamiprid was administered orally at the dose rate of 0, 25, 100 and 200 mg/kg of body weight to rats of groups I, II, III and IV, respectively. Group I served as control. Calcium, phosphorous, sodium, potassium, chloride, zinc,(More)
AIM The study was undertaken to detect the clinical signs, postmortem lesions of embryonated duck plague (DP) infected eggs, and histopathological changes of chorioallantoic membrane (CAM) in non-descriptive ducks of West Bengal with special reference to standardize nested polymerase chain reaction (PCR). MATERIALS AND METHODS After postmortem of(More)
Flavonol 4'-chloro,3-hydroxyflavone (Cl-3HF) has been investigated in solvents of varying polarity and hydrogen-bonding capacity as well as in aqueous micelle solutions. Quantum chemical calculations indicate that although the Cl-atom at the 4'-position of the 2-phenyl ring weakly perturbs the electron distribution of the parent 3-hydroxyflavone, the(More)
BACKGROUND Many western literature on ancient exercise science were available. Unfortunately ancient Indian contribution in this area was ignored. AIM The aim of this approach was to search ancient Indian literature on science of exercise. METHOD The researcher reviewed thoroughly complete Caraka Samhita (nearly ten thousand prose and verse) and the(More)
Background: Brain wave pattern reveals mental state of an individual. Exercise may alter mental state, which could be observed by brain study Aim: The aim of this study was to examine brain wave pattern of the player and the non-player after acute aerobic exercise Methods: Two (one player and other non-player) young healthy males aged between 21-23 years(More)