June 2015

Analysis of cavitating flow through a venturi

A dynamical study of a bubbly flows in a transversal varying section duct (Venturi), is modeled by the use of the mass and momentum phases equations, which are coupled with the Rayleigh-Plesset equation of the bubbles dynamics. The effects of the throat dimension and the upstream void fraction on flow parameters are investigated. The numerical resolution of the previous equations set let us found that the...

Author(s): Mohammed ZAMOUM and Mohand KESSAL

June 2015

Effect of pre-harvest foliar spray of calcium and potassium on fruit quality of Pear cv. Pathernakh

Growing costs of fertilizers and increasing concern about ground water pollution has resulted indiscriminate or excessive soil fertilization problem that may be solved by more efficient fertilizer application technologies. The availability of new promising oriental pear or Japanese pear [Pyrus pyrifolia (Burm) Nakai] cultivar like ‘Patharnakh’, pave an opportunity for extending its cultivation under tarai...

Author(s): B. Prasad, D. C. Dimri and L. Bora

June 2015

Genetic divergence in some bivoltine silkworm (Bombyx mori L.) breeds

Twenty-eight genotypes of bivoltine silkworm (Bombyx mori L.) were studied for genetic divergence using Mahalanobis D2 statistic. Based on fifteen important metric traits, D2 values were obtained and the genotypes were grouped into five clusters using Tocher’s method. The clustering pattern indicated a mixed trend. The silkworm genotypes originating/evolved from different geographical regions fell in the same...

Author(s): A. Maqbool, H. U. Dar, M. Ahmad, G. N. Malik, G. Zaffar and S. A. Mir

June 2015

Larval stage of trematodes obtained from brackish water snails in the central and east coast of the gulf of Thailand

Brackish water snail is one of the important intermediate hosts of trematode infections. This kind of snail along the Gulf of Thailand were examined for cercariae, the larval stage of trematodes. The aim of this study was to investigate cercarial infections in brackish water snails in the central and eastern side of the Gulf of Thailand. Snails were collected from 45 sampling sites (20 central areas, 25 eastern areas),...

Author(s): Suluck Namchote, Supatta Sritongtae, Siriphon Butnin, Paporn Wongwain and Duangduen Krailas