The quenching of quinine fluorescence intensity in the presence of some anions in aqueous solution at ambient temperature has been investigated. The quenching is found to be collisional or dynamical in nature. This study reveals the order of two groups of quencher: NaI > NaBr > NaCl > NaF and K2Cr2O7 > KMnO4 >Na2SO4 > NaClO3. Increasing anion size in the both groups leads to an  increase in the...

Introduction Increase in alpha band is observed when blood perfusion in frontal area of head decreases. The present study evaluated some changes in the alpha band particularly, alpha-1 of frontal and central areas of the head, when several areas were exposed simultaneously to magnetic field. Materials and Methods Five points of head (F3, F4, Cz, T3, and T4) of twenty healthy male participants w...

the purpose of this study was to determine the intensity influence of perform one set half squat on vertical jump performance and muscle electrical activity in adolescent athletes. the subjects were 12 adolescent boys athletes. the subjects performed one set of dynamic half-squat using low and high intensities (li= low intensity with 40% 1rm, hi= high intensity with 80% 1rm), and a control (c) ...

Abstract The frequency and intensity of extreme weather climate events may change in response to shifts the mean variability climate, which pose high risks societies natural ecosystems. Gridded near-surface temperature, precipitation, number wet days from Climatic Research Unit dataset were analyzed for two 30 year periods explore changes temperature precipitation over global land areas recent ...

background: benign paroxysmal positional vertigo (bppv) is linked to vitamin d deficiency. this clinical trial aimed to determine the influence of vitamin d supplementation on intensity of bppv. methods: the study population was selected consecutively and the diagnosis of bppv was made by history and clinical examination and exclusion of other conditions. intensity of bpvv was assessed based on...

the areas of the world that have mediterranean style climate are found at about 35 degrees north and south of the equator, on the western sides of continents. the distinctive feature of this climate is the small amount of rain in the summer. overall, the climate has a moderate amount of rainfall and warm winters and hot summers and. the climate of the mediterranean region is conditioned by its ...

Increasing frequency and severity of flooding demands identification of flood hazard zones in Kalilangan, Bukidnon in response to the echoing need of better disaster preparedness via enhancing the understanding and awareness of the public on flood characteristics by integrating the use of two-dimensional hydrodynamic modeling and remote sensing. Flood simulation was carried out in a two-dimensi...