Narayana Pillai, V; Dr.Murthy, A V S(Cochin University of Science And Technology, 1982)
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Abstract:
The present study is aimed at observing the variations, in
space and time, of see of the important hydrographic parameters such
as sea water temperature, salinity and Resolved oxygen within the
coastal waters along the south-west coast of Indiametween Ratnagiri
(17°OO*N,73°20'E) and cape comorin ( 8°10'N,77°30*E). Specific data
relating to the process of upwelling and sinking was collected mainly
to evaluate the extent and intensity of the vertical mixing processes
active in the area under study. The study also attempted possible correlations between the observed parameters and the occurrence and migrations of some of the major pelagic fishery resources such as sardine,mackerel and anchovy in the area under study
Description:
School of marine sciences, Cochin University of Science And Technology
Measurements of dc conductivity and dielectric constant show that deuteration causes an upward shift of the high temperature phase transition point from 186.5 to 191°C and a downward shift of the low temperature transition point from 10 to -1.5°C in LiNH4SO4. Mechanisms of phase transitions and of electrical transport in the crystal are discussed.
Mohanan, P; Pravinkumar,P A; K G Nair(Indian Journal of Radio & Space Physics, 1982)
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Abstract:
A simple technique for obtaining identical E- and H-plane patterns from E-plane sectoral feed horn is presented. Halfpower
beam width and gain of the antenna are also improved considerably. Experimental results for a number of horns with
flanges of various parameters are also presented. This system may find practical application in radar and space communication
systems
Balakrishna Warrier, K; Dr.Purushothaman, C(Cochin University of Science and Technology, January , 1982)
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Abstract:
The present thesis deals with the theoretical investigations on the effect of anisotropy on various properties of magnetically doped superconductors described by fihiba — Rusinov
model.Chapter 1 is introductory. It contains a brief account of the current status of theory of superconductivity. In’ chapter 2 we give the formulation of the problem. Chapter 2.1 gives the BCS theory. The effect of magnetic impurities in superconductors as described by A8 theory is given in chapter 2.2A and that described by SR model is discussed in chapter 2.28. Chapter 2.2c deals with Kondo effect. In chapter 2.3 the anisotropy problem is reviewed. Our calculations, results and discussions are given in chapter 3. Chapter 3.1 deals with Josephson tunnel effect. In chapter 3.2 the thermodynamic critical field H62 is described. Chtpter 3.3 deals with the density of states. The ultrasonic attenuation coefficient and ufitlear spin relaxation are given in chapter 3.4 and 3.5 respectively. In chapter 3.6 we give the upper critical field calculations and chapter 3.7 deals with the response function. The Kondo effect is given in chapter 3.8. In chapter 4 we give the sumary of our results
Description:
Department of Physics, Cochin
University of science and Technology
Peter, K J; Dr.Kurian, C V(Cochin University of Science And Technology, January , 1982)
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Abstract:
Though several scientific expeditions surveyed
tha Indian ocean. their findings on larval fishes
were fragmentory and incomplete. During the
International Indian ocean expedition (1960-1965)
zooplankton samples were collected from vast area at
the lndian ocean adopting standard procedures by
participating vessels. These planktons provided an opportunity for a general study of the
zooplanltton as well as their anotomy. abundance and
distribution.. Realising the imortance of the
analysis and classification of fish larvae at the
family level being one of the most important
information required then for the Indian Ocean region
the fish larval portion sorted out from the above
zooplankton samples was allocated to the author by the
UNESCO consultative committee for the Indian Ocean
Biological centre. In spite of the emhasis laid on
The study of the family scombridae. owing to the
paucity of the scombridae material in tne collection.
much could not be done about it.However the record
and description of the very early stages of morakel larvae made in 1967 as part of this study was the first of its kind. The present study on the distribution aspects o fish larva of such large area in the Indian ocean is also unique and first of its kind