Showing papers by "Annamalai University published in 1972"

Effect of splenectomy on the immune response in the lizard, Calotes versicolor.

Abstract: Nach Entfernung der Milz kann die EidechseCalotes versicolor nicht mehr gegen Immunizierung mit Schafserythrozyten reagieren. Wenn die Milz aber nur teilweise entfernt wird, ist noch eine vollig normale Reaktion vorhanden.

Ecological aspects of plankton production

Abstract: The study was carried out in the neritic and estuarine waters of Porto Novo, Coromandel Coast, Bay of Bengal, India during the period January, 1960 to December, 1967 The average displacement volume of plankton usually varied between 2 and 4 c2/m2 During summer, with a season of high plankton productivity, the average plankton displacement volume rose to 8 c2/m3 Generally speaking, the average zooplankton density (standing crop) was usually between 80,000 and 100,000 organisms/m3, of which copepods alone comprised usually between 70,000 and 90,000 organisms/m3 The average copepod density per sample varied from 30,000 to 50,000 organisms/m3 However, in the summer months, the copepod density was usually not less than 100,000 organisms/m3; in some years this was even higher (from 125,000 to 170,000 organisms/m3) Copepods comprised between 80 and 95% of the zooplankton population The maximum non-copepod population in the zooplankton seldom reached 30%, was ofter below 25%, and usually less than 20% During the period March to October (in some years as early as February, and in some years up to November), either an increasing or a steady trend of plankton production was evident It would appear that salinity and rainfall determine the occurrence and distribution of plankton in Porto Novo

Immunological competence in the newly hatched lizard, Calotes versicolor.

Abstract: SummaryStudies are reported on the ability of the hatchling of the lizard Calotes versicolor to engage in immunological reactions. The experiments demonstrate that even within the first 24 hr after hatching the lizard is able to mount an immune reaction against sheep red blood cells, in a manner not readily distinguished from adult animals.

A Tauberian Theorem for the Generalised Abel Method of Summability-I

Abstract: This method was introduced independently by A. Amir Jakimovski ([2], p. 374) and C.T. Rajagopal ([8], p. 93). It was discussed in detail by D. Borwein [4]. In the sequence to function transformation method (A α ) if we put α = 0, we get the familiar Abel method (A 0 ) or {A).

Distribution of the maximum of the number of impulses at any instant in a type II counter in a given interval of time

Abstract: Here we have considered a type II counter in which the inter-arrival times of particles are independent identically distributed random variables following a given distribution. Each particle is assumed to give rise to an impulse and the state of the counter at an instant is defined by the number of impulses present at that instant. Two variations of the model are taken into account depending upon whether the system starts initially with an impulse or not. We have obtained integral equations for the distribution of the maximum of the number of impulses at any instant in a given interval of time for the two models considered. Special cases where the inter-arrival times and the duration of the impulses follow the exponential distribution have also been dealt with.

Physiology of Resistance to a Bacterial Disease in Sorghum

Abstract: Changes in carbohydrate metabolism of host plants infected with parasites have been extensively studied in recent years (Wood 1955, Yarwood and Jacobson, Allen 1959, Kiraly and Farkas 1959, Daly et al. 1962Shaw 1963)...