Surender Yadava

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This article examines the prevalence of age-related diseases in different socioeconomic and demographic groups. The study is based on a sample of 267 aged persons (> 60 years) collected through a survey entitled "Aging and Health Conditions in Rural Area-A Sample Survey, 1990" conducted in the rural areas of the Varanasi district of Uttar Pradesh, a(More)
Densities (ρ12) and viscosities (η12) of binary mixtures of alkylethanoates, + cyclohexane, benzene, 1,4-dimethylbenzene and 1,3,5-trimethylbenzene have been measured over the whole mole fractions range at atmospheric pressure and temperature 308.15 K. Deviations of experimental viscosities from the linear mixing rule (Δη) for binary mixtures of the esters(More)
Densities and ultrasound velocities for the binary mixtures of 1-bromobutane+benzene and 1,4-dimethylbenzene and of 1-bromopentane+cyclohexane and benzene have been measured at 308.15 K. Adiabatic compressibilities (beta(ad)), and Wada's constants (W) have also been evaluated as a function of composition. The ultrasound velocities decrease, attains a(More)
Phytotoxicity of parthenin, a sesquiterpene lactone, was evaluated against four weedy species (Amaranthus viridis, Cassia occidentalis, Echinochloa crus-galli, and Phalaris minor) through a series of experiments conducted under laboratory or greenhouse conditions to assess its herbicidal potential. Under laboratory conditions, parthenin (0.5Ð2 mm) severely(More)
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