Incidental heavy landings of mackerel, at Arangamkuppam near Madras

During the period 1988-'92, an annual average of 14,340 t of the mackerel, Rastrelliger kanagurta were landed along the Tamil Nadu coast. Out of the total mackerel landed during the period, 44% was obtained in 1902. Peak mackerel catches alng the east coast occurs in March-April period [Mar. Fish. Infor. Sew., T&E Sen, No. 63, 1985). In this connection it was interesting to observe an incidental heavy landings of the mackerel outside the fishing season recorded on 22-6-'92 at Aramgamkuppam landing centre bordering the Pulicat Lake of Chengalpet District

FOURIER ANALYSIS ON FINITE ABELIAN GROUPS

This article reveals the basic techniques of fourier analysis on a finite abelian group .It may be used as to derive theorems in graph theory.The definition of fourier transform depend on the choice of Isomorphism but it is independent of this choice upto automorphism of R. Fourier transformation has been a rich source for applications in combinatories

METRICES GENERATED FORM THE SEMI- METRIC ON FUZZY MATRICES

This article deals with Fuzzy matrix theory is a mathematical theory developed by Dr.W.B .Vasantha kandasamy , florentin smarandache ,k.ilantheral and others.The basic concept of the theory is that the mathematical matrices can be applied to social and natural situations to predict likely outcomes.The mathematics in fuzzy matrix theory is very simple and can be used to analyze a broad range of data

A STUDY ON COHOMOLOGY GROUPS

In this chapter we shall apply the theory of derived functors to the important special case where the cochain complex, sequence of abelian, n – cochain, cyclic, Rham cohomology. This will lead cohomology group Hn(X, G). In developing the theory we shall attempt to deduce as much as possible form general properties of derived functors. Thus or example we shall give a proof of the fact that Hn(X, G)

APPLICATION OF AIR POLLUTION TOLERANCE INDEX IN ASSESSING THE AIR QUALITY

Objective: The rapid growth of urban population both natural and through migration, has put heavy pressure on air quality of an urban area through increase in industrial sectors. The increase in vehicular movement and industrial activities results in significant increase in air pollution. Air quality has been worsened in the major metropolitan cities of India and there are various studies evolving to control and mitigate this problem. One of the studies among several, is on the use of plant as both monitoring and assessment tool. Evaluating the application of Air pollution tolerance index is to assess the ambient air quality and for development of green belt.Methods: A literature search has been done on Scopus scientific database to review the existing knowledge. A variety of search keywords are used related to air pollution tolerance index study. There are total of 63 studies has been published related to Air pollution tolerance index and they were classified based on study area and other parameter.Results: The review has found several pathways to link the air pollution and plant. There are scientific evidence that plants can bio accumulate the air pollutant. The recommendation and suggestions have been provided to carry out further research works based on the limitation found in existing knowledge.Conclusion: These research findings provide an understanding or view about identification of tolerant species and sensitive species in any study area so that these species can be used for a green belt development to prevent the air pollution problems.Â

Landing of giant devil rays at Chennai Fisheries Harbour

Three numbers of giant devil rays, Manta birostris (Fig. 1), locally called as “kombu thirukkai” along with the lesser devil ray, Mobula diabolus (Fig. 2) were landed by mechanised gillnet at Chennai Fisheries Harbour on 04-06-201

On a whale shark Rhiniodon typus (Smith) landed at Pudumanaikuppam, Madras

The article provides the landing details of a single large whale shark, Rhiniodon typus at Pudumanaikuppam landing centre, Madras district, Tamilnadu state during March 1987. The organisms was discarded into the sea as there were no buyers for it