| URI: | http://dyuthi.cusat.ac.in/purl/1080 |
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| Subhash N 1982.pdf | (125.7Kb) |
| URI: | http://dyuthi.cusat.ac.in/purl/1121 |
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| Saseendran Pillai P R 1982.PDF | (202.1Kb) |
| 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 |
| URI: | http://dyuthi.cusat.ac.in/purl/3566 |
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| Dyuthi-T1523.pdf | (2.763Mb) |
| 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 |
| Description: | National institute of oceanography |
| URI: | http://dyuthi.cusat.ac.in/purl/3500 |
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| Dyuthi-T1481.pdf | (10.51Mb) |
| Abstract: | The subsequent chapters of the Thesis deal with the toxic effects of mercury, copper, zinc und~1ead on these bivalve molluecs, their accumulation and distribution among various organs of the animals and also the motel retention winstica by the three species. Static biousauy tests have been conducted in these studies. It was found that the concentrations of the various metals studied in these organism are well below the permitted level given far ease ahellfienes (crab and ehrimgi and that these maliuscs are very good integrators ef trace metals from their environment and may be used as an indicator organism sf metal pallutaute. The present investigutionsemphaeie the need for a clean coastal water and gives a serious warning regarding the possiblc route of heavy metals in ta human body thraugh marine food chain. |
| Description: | School Of Marine Sciences Cochin University Of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3613 |
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| Dyuthi-T1571.pdf | (6.258Mb) |
| Abstract: | Perhaps the most characteristic feature of our timesis that economic development has become the goal and ambition of people. The needs which this desire creates are immense they are of course urgent everywhere and they cannot be postponded. Consequently there was a frantic search for formulae of rapid economic development. It was claimed that agrarian reform is the indispensable condition for the development of productive forces and industrialization of the state.A key element in the land reform policy is the provision for ownership of land .Measures taken include redistribution of large estates ,assistance to tenants or labourers to acquire holdings and settlement schemes to establish new farming units on reclaimed or developed lands.In this thesis an attempt is made to evaluate the impact of these reforms on the agrarian structure in general and the scheduled caste in particular. |
| Description: | Department of applied economics, Cochin University of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3505 |
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| Dyuthi-T1636.pdf | (3.681Mb) |
| Abstract: | The overall focus of the thesis involves the International trade and cochin port a historical and statistical analysis 1881-1980.Analysing the trend of exports and imports through cochin port during the course of the last hundred years .This analysis has brought to light some very pertinent facts which , in our opinion,deserve serious consideration of the policy makers,the partise involved in trade and those who are interested in the development of the cochin port.Our study is restricted to twelve commodities -ten commodities of exports and two commodities of imports.The study reveals that the commodities that were exported from cochin are subjected to fluctuations -some mild and others wild. The projections only indicate the potential and unless we are very cautious the chance will be taken away by our competitors .With reference to the development of the port in particular and the states economy in general we would like to make a suggestion .This suggestion relates to declaring cochin as a free port .This will go a long way in the develppment of the port and the state's economy.The sooner it is done the better for the port and the state. |
| Description: | Department of Applied Economics, Cochin University of Science and Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3135 |
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| Dyuthi-T1109.pdf | (10.13Mb) |
| Abstract: | An attempt is made by the researcher to establish a theory of discrete functions in the complex plane. Classical analysis q-basic theory, monodiffric theory, preholomorphic theory and q-analytic theory have been utilised to develop concepts like differentiation, integration and special functions. |
| Description: | Department of Mathematics and Statistics, Cochin University of Science & Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3345 |
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| Dyuthi-T1327.pdf | (4.010Mb) |
| Abstract: | In the present study, fifteen typee of diseases occurring in twenty one species of finfishes end shellfishes are documented and the causes studied. All these are being reported from India for the first time which adds considerably to our existinq knowledge on the subject.In fact, the candidate's studies embodied in this Thesis has also an applied significance aimed at the proper management_of finfish and shellfish aquaculture systems in this country.The thesis is presented in seven main chapters. |
| Description: | Central Marine Fisheries Research Institute |
| URI: | http://dyuthi.cusat.ac.in/purl/3650 |
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| Dyuthi-T1624.pdf | (10.22Mb) |
| Abstract: | The main purpose of the study is to examine the economic aspects of the korai mat weaving industry. |
| Description: | Department of Applied Economics,Cochin University Of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3759 |
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| Dyuthi-T1721.pdf | (3.845Mb) |
| Abstract: | The major objective of the thesis is essentially to evolve and apply certain computational procedures to evaluate the structure and properties of some simple polyatomic molecules making use of spectroscopic data available from the literature. It must be said that though there is dwindling interest in recent times in such analyses, there exists tremendous scope and utility for attempting such calculations as the precision and reliability of'experimental techniques in spectroscopy have increased vastly due to enormous sophistication of the instruments used for these measurements. In the present thesis an attempt is made to extract maximum amount of information regarding the geometrical structure and interatmic forces of simple molecules from the experimental data on microwave and infrared spectra of these molecules |
| Description: | Department of physics, Cochin University of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3305 |
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| Dyuthi-T1279.pdf | (4.772Mb) |
| Abstract: | Antennas play an important role in determining the characteristics of any electronic system which depends on free space as the propagation medium. Basically, an antenna can be considered as the connecting link between free space and the transmitter or receiver. For radar and navigational purposes the directional properties of an antenna is its most basic requirement as it determines the distribution of radiated energy. Hence the study of directional properties of antennas has got special significance and several useful applications. |
| Description: | Department of Physics, Cochin University of Science and Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3641 |
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| Dyuthi-T1630.pdf | (14.99Mb) |
| Abstract: | The thesis is proposed to study the occurrence and distribution of chitinoclasts in water, sediment and fauna as related to site characteristics such as temperature, salinity, depth of water, pH, etc. Since no information is available on the chitinolytic properties of coastal strains, it is also proposed to study the chitinolytic activity of the bacterial isolates in relation to various environmental conditions. It is also planned to work out the taxonomy of some of the representative isolates and certain kinetic properties of their chitinases. It is expected that the results of the study would yield a comprehensive information-on the chitinoclastic bacteria in the southern coastal zone of west coast of India. |
| Description: | Department Of Marine Sciences,Cochin University Of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3482 |
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| Dyuthi-T1428.pdf | (7.069Mb) |
| Abstract: | The main purpose of the Study is to outline the main distributional features of the species of the calonoid copepod family seolecithricidae in the Indian Ocean Expedition collections and to distinguish and describe their niches. In the present thesis 27 species belonging to 7 genera were identified of which 2 were new records from the Indian Ocean and one was described as a new species. In addition to the general treatment of the taxonomy, zoogeography and species diversity in relation to various environmental parameters are also attempted |
| Description: | National institute of Oceanography |
| URI: | http://dyuthi.cusat.ac.in/purl/3168 |
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| Dyuthi-T1142.pdf | (13.58Mb) |
| Abstract: | The thesis documents a comprehensive systematic account of Vembenad lake fishes and to study the effect of physico-chemical parameters on the distribution and abundance of fishes in the lake. This study is expected to advance the knowledge on the biological aspects of two commercially important fishes of the lake which are very desirable for brackish water fish farming. Additionally, the results of the studies on the ecology as habitat, occurrence, season and abundance of all the recorded fishes of the lake end the commercially important fish species of the lake are also incorporated. A general appraisal on the detrimental factors which are adversely affecting the fisheries resources of the lake are presented and some measures of conservation are also suggested. The results of the present study are helpful in formulating suitable schemes for management of parts of the Vembenad lake for capture and culture fisheries |
| Description: | School of Marine Science, Cochin University of Science and Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3185 |
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| Dyuthi-T1159.pdf | (23.56Mb) |
| Abstract: | Lipids constitute a significant portion of the biomass of earth and lipolytic enzymes play a very important role in lipid turn over. Apart from their biological significance, lipolytic enzymes are also very important in the fields of nutrition, food technology, medicine and preparative and analytical lipid biochemistry. Recent developments in the study of proteins and enzymes have largely benefited the study of lipolytic enzymes, that some of these enzymes were isolated in pure form. Even today there is a continuous search for new and potent sources of these lipolytic enzymes. The zest for elucidating the structure and mechanism of action of the enzymes obtained in pure form for biochemist still remains unabated. The literature shows no record of such an effort for the study of lipases from marine sources. The fact that many fishes like oil sardine, mackerel, cat fish, seer etc. contains large amounts of lipid shows the possibility of the existence of lipases in significant amounts necessitating their exhaustive study. Such a study will, not only provide alternate sources for lipase but also will provide methods to curb lipolysis and the resultant rancidity and off flavor development in fish and fishery products. |
| Description: | School of marine sciences, Central institute of fisheries technology, Cochin University of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3459 |
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| Dyuthi-T1468.pdf | (2.648Mb) |
| Abstract: | Thc tea industry in lndia is going through a period of crisis. The crisis in brought about mainly by cost caculation and declining or stagnant prices. The impact of the present crisis is felt most by the owners of tea plantations in Kcrala . The present study assumes significance due to the fact that the critic which already affected Keralas tea industry is now threatening to extend to other tea-growing areas in south India. Today, ensuring a favourablc price to the producers via-a-via possibilities or reducing the cost of production through increase in productivity of land and labour are the main considerations. The main purpose of the study is to analyse the factors behind the crisis as well as exploring immediate and long-term measures for the sustained growth of the industry. |
| Description: | School of Management Studies, Cochin University of Science & Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3339 |
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| Dyuthi-T1324.pdf | (18.87Mb) |
| Abstract: | The thesis deals with certain quantum field systems exhibiting spontaneous symmetry breaking and their response to temperature. These models find application in diverse branches such as particle physics, solid state physics and non~linear optics. The nature of phase transition that these systems may undergo is also investigated. The thesis contains seven chapters. The first chapter is introductory and gives a brief account of the various phenomena associated with spontaneous symmetry breaking. The chapter closes with anote on the effect of temperature on quantum field systems. In chapter 2, the spontaneous symmetry breaking phenomena are reviewed in more detail. Chapter 3, deals with the formulation of ordinary and generalised sine-Gordon field theories on a lattice and the study of the nature of phase transition occurring in these systems. In chapter 4, the effect of temperature on these models is studied, using the effective potential method. Chapter 5 is a continuation of this study for another model, viz, the m6 model. The nature of phase transition is also studied. Chapters 5 and 6 constitute a report of the investigations on the behaviour of coupling constants under thermal excitation D1 $4 theory, scalar electrodynamics, abelian and non-abelian gauge theories |
| Description: | Department of physics, Cochin University of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3330 |
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| Dyuthi-T1297.pdf | (6.255Mb) |
| Abstract: | Scientific studies on the materials management systems and practices actually followed in various organizations in India are rather limited. This is particularly true with respect to service industries. In this context ,the present study on the “materials management in state transport undertakings in India, with special reference to kerala state road corporation” assumes particular significance . This study, examines critically, the prevailing set up, procedures and practices of materials management in the Kerala state road transport corporation and compares them with the prevailing practices in other similar state transport undertakings. It indicates several areas for improvement with respect to the organization, materials planning, purchasing, store keeping and other aspects. It also seeks to develop a comprehensive inventory control system for KSRTC. |
| Description: | School of management studies, Cochin University of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3349 |
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| Dyuthi-T1307.pdf | (21.63Mb) |
| Abstract: | Of the several physical processes occurring in the sea, vertical motions have special significance because of their marked effects on the oceanic environment. upwelling is the process in the sea whereby subsurface layers move up towards the surface. The reverse process of surface water sinking to subsurface depths is called sinking. Upwelling is a very conspicuous feature along the west coasts of continents and equatorial regions, though upwelling also occurs along certain east coasts of continents and other regions, The Thesis is an outcome of some investigations carried out by the author on upwelling and sinking off the west and east coasts of India. The aim of the study is to find out the actual period and duration of upwelling and sinking, their driving mechanism, various associated features and the factors that affect these processes. It is achieved by analysing the temperature and density fields off the west and east coasts of India, and further conclusions are drawn from the divergence field of surface currents, wind stress and sea level variations. |
| Description: | School of marine sciences, Cochin University of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3320 |
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| Dyuthi-T1291.pdf | (9.364Mb) |
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