Showing papers by "Government College published in 1973"

Uranium contents in minerals by fission track method

Abstract: Uranium concentration in feldspar, pyroxene and carbonate groups of minerals has been studied by using the induced fission track technique. Fractions of homogeneously and heterogeneously distributed uranium have been estimated by differential counting. The suitability of studied minerals for fission track geochronology is discussed.

Neuroendocrine control of metabolism of a pulmonate snail, Ariophanta Sp.

Abstract: Controle neuroendocrinien du metabolisme d'unAriophanta Sp., mollusque pulmone. Les resultats indiquent la presence de deux facteurs hyperglycemiques dans le systeme nerveux central, l'un pour le glucose et l'autre pour les autres sucres. Les ganglions cerebraux contiennent un facteur hypoglycemique tres actif et des facteurs qui sont responsables du catabolisme des proteines.

Effect of Glucose Loading on the Blood Glucose Level and Histology of the Principal Islets in Channa Punctatus

Abstract: Glucose was administered to a fresh water teleost, Channa punctatus. Three groups of 40 fish each were injected intramuscularly with 1/2, 1 and 2 g/kg body weight glucose. Blood glucose level of the experimental fish was assayed according to Nelson (1944) at predetermined intervals, ranging from 0 to 120 hr post-injection. The principal islets were removed at autopsy and fixed for histological examination. A group of 20 fish injected with plain distilled water served as controls.A dose dependent hyperglycemic response was obtained after the glucose loading in Channa punctatus. The peak values were recorded within one hr of the injection. The beta cells in the principal islets were degranulated as a consequence of the glucose injection. The degenerative changes in the beta cells, which included loss of specific granules, pycnosis of nuclei and vacuolization, occurred in synchrony with the fluctuations in the glycemic level. The histological changes in the beta cells were interpreted to be resulting from an increased demand for insulin to metabolize the excess glucose, thereby indicating the role of these cells in the blood glucose homeostasis in this fish.

TSC curves in (ZnO-MgO): Fe, O photoconductor: existence of negative and oscillatory characters

Abstract: Three peculiar features associated with thermally stimulated current (TSC) curves for different cooling schedules in a (ZnO-MgO):Fe, O photoconductor have been observed. The first and most important is the development of exceptionally high currents, up to 5 μA,atTr = 40°C. Such currents are uncommon in such large band-gap photoconductors, suggesting that the system is thus an efficient photoconducting material. Secondly, results on negative TSC followed by a positive one (a study in support of the earlier work manifesting the existence of negative TSC [4]) are reported. The third feature is the oscillatory behaviour of the current at higher temperatures. An attempt has been made to give a plausible explanation of these phenomena.

Comparative effects of aureomycin, B-complex and yeast on the survival rate of common carp,Cyprinus carpio L. from three days to 25 days of life

Abstract: Common carp spawn from 3-day to 25-day old was treated with aureomycin, B-complex, yeast. aureomycincum B-complex, aureomycincum yeast and B-complexcum yeast. Survival during first 25 days of life was found to be enhanced significantly by treatments with yeast B-complexcum yeast and aureomycincum Yeast.

Dispersion Relation in Warm Electron-Ion Plasma

Abstract: Alternative method for solving the dispersion relation in isotropic electron-ion plasma is studied. The phase and group velocities for fast and slow plasma modes are discussed in detail.

On the torsional damped vibrations of an elastic half-space under impulsive body force

Abstract: The aim of the present paper is to study displacement due to an impulsive torsional body force, within a Semi-infinite isotropic elastic solid body in the presence of viscous damping as well as solid damping. Certain numerical results of the displacement of the stress-free solid have also been given in graphical form.

Succinic dehydrogenase activity during starvation of a terrestrial pulmonateAriophanta sp.

Abstract: Nachweis, dass die Dehydrogenase-Aktivitat im Hepatopankreas, Fuss und Schlundring bei der Lugenschneckeariophanta sp. eine ausgesprochene Enzymanpassung an die veranderten Stoffwechselbedingungen wahrend langfristiger Hungerperioden zeigt und damit auf einen Uberlebensmechanismus hinweist.