Thresiamma,T K; Dr.Wazir, Hasan Abdi(Cochin University of Science and Technology, 1985)
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Abstract:
The object of this thesis is to formulate a basic commutative difference operator theory for
functions defined on a basic sequence, and a bibasic commutative difference operator theory for functions defined on a bibasic sequence of points, which can be applied to the solution of basic and bibasic difference equations. in this thesis a brief survey of the work done in this field in the classical case, as well as a review of the development of q~difference equations, q—analytic function theory, bibasic analytic function theory, bianalytic function theory, discrete pseudoanalytic function theory and finally a summary of results of this thesis
Description:
Department of Mathematics and
Statistics, Cochin University of Science & Technology
Deepthi, C P; Dr.Krishnamoorthy,A(Cochin University of Science and Technology, May 3, 2013)
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Abstract:
In everyday life different flows of customers to avail some service facility or other at some service station are experienced. In some of these situations, congestion of items arriving for service, because an item cannot be serviced Immediately on arrival, is unavoidable. A queuing system can be described as customers arriving for service, waiting for service if it is not immediate, and if having waited for service, leaving the system after being served. Examples Include shoppers waiting in front of checkout stands in a supermarket, Programs waiting to be processed by a digital computer, ships in the harbor Waiting to be unloaded, persons waiting at railway booking office etc. A queuing system is specified completely by the following characteristics: input or arrival pattern, service pattern, number of service channels, System capacity, queue discipline and number of service stages. The ultimate objective of solving queuing models is to determine the characteristics that measure the performance of the system
Description:
Department
of Mathematics, Cochin University of Science and Technology
Chandrasekharan,N S; Dr.Leelakrishnan, P(Cochin University of Science And Technology, December , 1982)
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Abstract:
This is a study in labour law.. Dismissal of workmen in private lndustrial sector is the area of this study. Confined within the framework of the Industrial Disputes act 1947, the study is an analytical assessment of the decisions of the supreme Court of India. on dismissal in industrial
employment. Few attempts were made in the past to analyse on identical lines the problems in this area. Hence what is| written in this thesis is ones own. Dismissal carries a stigma. the dismissed employee may find it difficult to get alternative employment especially in a land of severe unemployment. The need for law with built in safeguards against arbitrary dismissal cannot be overemphasized. From this perspective the study examines to what extent the industrial disputes act 1947 provides protection and how far the protection is adequate.
Description:
School of legal studies, Cochin University of Science And Technology
Hashim, M; Dr.Pillai,N G K(Cochin University of Science and Technology, May , 2012)
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Abstract:
This thesis Entitled distribution ,diversity and biology of deep-sea fishes the indian Eez.Fishing rights and responsibilities it entails in the deep-sea sector has been a vexed issue since the mid-nineties and various stakeholders have different opinion on the modalities of harnessing the marine fisheries wealth, especially from the oceanic and deeper waters. The exploitation and utilization of these esources requires technology development and upgradation in harvest and post-harvest areas; besides shore infrastructure for berthing, handling, storing and processing facilities. At present, although deep-sea fishes don’t have any ready market in our country it can be converted into value added products.
Many problems have so far confronted the deep-sea fishing sector not allowing it to reach its full potential. Hence, there should be a sound deep-sea fishing policy revolving round the upgradation of the capabilities of small scale fishermen, who have the inherent skills but do not have adequate support to develop themselves and to acquire vessels having the capability to operate in farther and deeper waters. Prospects for the commercial exploitation and utilization of deep-sea fishes were analyzed using SWOL analysis.
Nifty, John; Dr. Mohamed Hatha, A.A(Cochin University of Science & Technology, April , 2014)
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Abstract:
The thesis deals with the prevalence and distribution of motile aeromonads in selected ornamental fishes. The presence of motile aeromonads in ornamental fishes and associated carriage water is well documented. Though aeromonads are a part of autochthonous flora of natural waters, disease outbreak occurs as a result of
environmental stress on the cultured species and virulence of the pathogens.
While ornamental aquaculture in many parts of the world is highly organized and
practiced scientifically, it is highly unorganized in India. The culture ponds/tanks
are often maintained in very poor manner and the fishes are subjected to high
degree of stress during transportation from the production facility to retail
vendors. The situation is no better at retail outlets, where fishes are maintained in
crowded condition without proper aeration or food. All these could result in high
prevalence of diseases caused by motile aeromonads. No systematic study has been carried out to understand the prevalence of motile aeromonads in ornamental fishes and carriage water . It also gives an account of the production of extracellular virulence factors and the antibiogram of the different species of motile aeromonads isolated. The growth characteristics and virulence potential of a representative strain of Aeromonas hydrophila is also studied. The nucleotide sequencing of the strain was carried out and sequences deposited in Genbank. Survival and immune response of Cyprinus carpio under different stress conditions and on probiotic treatment with Bacillus NL110, when challenged with A. hydrophila is also dealt within this thesis.
Sheeba,P; Sarala Devi,K(National Institute of Oceanography, 2000)
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Abstract:
The study revealed stress and localized impact of industrial waste on the biota, predominance of stress tolerant species and low diversity in the vicinity of the effluent discharge point. These studies on impact of environmental parameters on the distribution of macrobenthos thus indicate the quantum of endurance warranted by the infauna to tide over the wide range of environmental stress. Low diversity and lower number of benthic fauna near discharge site can be attributed to the stress caused by cumulative toxic effects of effluents. The results of the physico-chemical parameters highlight the effects of pollution. The results of the study indicated the changes due to the large-scale movements of the estuarine water under the influence of tide, monsoon and land runoff coupled with its heterogenous nature owing to the effluent discharge from the industries
Luckose, C K; Dr.Chandrasekharan Pillai, N(Cochin University of Science and Technology, September , 1992)
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Abstract:
When we consider Kerala and Karnataka States according
to their levels of decentralisation. Kerala is at the beginning
of the scale of decentralisation whereas Kamataka has moved far
ahead along this scale. Therefore I in order to conduct a comparative
study of the SUbject under analysis t Kamataka has been selected
owing to the fact that it is in an advanced stage in the experience
of district planning compared to Kerala , Karnataka could successfully
implement district planning and it is me of the pioneering states
in this regard. But Kerala has not gained much experience in
the field of decentralised district planning till now. Furthermore
Kerala and Kamataka states are selected for the present study
due to operational reasons I besides the author I s familiarity with
the socia-economic conditions of these states. Thus. an analysis
of the district planning experience of Kamataka will provide
constructive and valuable information. which will be of great
importance to Kerala State, which is now aspiring to introduce
ful.I-f'Iedge district planning by constituting elected District Coancils
in every district of Kerala. Moreover. the findings and policy
implications of the present study will be of immense help to
planners, politicians. administrators, academicians and people
at large.
Description:
School of Management Studies, Cochin University of Science & Technology
Manjula,K; Jose,T Payyappilly(Department of Applied Economics, 2002)
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Abstract:
The basic objective of the present study has been to observe the process and pattern of employment diversification among the rural women workers in Ernakulam district. The evidences are that the women workers in the rural areas of the state are being increasingly diversified into the tertiary sector. The clear cut evidence for the fact that in Kerala non-agricultural employment of rural women is increasing with more and more of them getting diversified into the tertiary sector. The women get more self esteem and recognition in terms of the work being done by them. In the urban areas of the state as a poverty eradicating measure the Kerala government has already introduced a new scheme under the banner of Kudumbasree. Another fact noticed in the study that the sectoral shift of women workers has posed a grave problem to the agricultural sector. The reluctance of workers to do manual jobs on land and the prevalence of high wages among the agricultural labours has left many a cultivable area fallow or has induced farmers to shift to less labour –intensive crops. The situation is expected to worsen in future as even the high wages fail to attract the young generation to this sector. To conclude the study has fulfilled all its objectives, viz; highlighting the rural employment structure in Kerala, examining the process, pattern, determinants and consequences of diversification among rural women workers in the sample villages. Being the first of its kind at the micro level in the state it contributes to the available literature in the area enriching the database that is crucially lacking for devising projects at the village and block-level. There exists ample scope for future research of similar nature in an urban background where the secondary data-sources are hinding towards a reversal of trends from non-agriculture to agriculture.
Rapheal,P F; Prathapachandra Kurup, M R(Department of applied chemistry, 2006)
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Abstract:
The study deals with the diversity in structural and spectural characteristics of some transition metal complexes derived from aldehyde based thiosemicarbazone ligands thiosemicarbazones are a family of compounds with beneficial biological activity viz., anticancer,antitumour, antifungal, antibacterial, antimalarial, antifilarial, antiviral and anti-HIV activities. Many thiosemicarbazone ligands and their complexes have been prepared and screened for their antimicrobial activity against various types of fungi and bacteria. The results prove that the compounds exhibit antimicrobial properties and it is important to note that in some cases metal chelates show more inhibitory effects than the parent ligands. The increased lipophilicity of these complexes seems to be responsible for their enhanced biological potency. Adverse biological activities of thiosemicarbazones have been widely studied in rats and in other species. The parameters measured show that copper complexes caused considerable oxidative stress and zinc zinc complexes behaved as antioxidants. It has applications on analytical field also. Some thiosemicarbazones produce highly colored complexes with metal ions. This thesis aims to synthesis some novel thiosemicarbazone ligands and their transition metal complexes together with their physico-chemical characterization.
Leeju, P; Dr.Mohammed Yusuff,K K(Cochin University of Science & Technology, April , 2011)
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Abstract:
In this thesis we report the synthsis and characterisation of new transition metal complexes of Pd(II),Cu(II),Ru(II) and Ir(III) of Schiff bases derived from quinoxaline-2-carboxaldehyde/3-hydroxyquinoxaline-2-carboxaldehyde and 5-aminoindazole.6-aminoindazole or 8-aminoquinoline.The complexes have been characterised by spectral and analytical data.Pd(II) and Cu(II) form square planar complexes and Ru(III) and Ir(III) form ctahedral complexes with these Schiff bases.The DNA binding properties of theses synthesised complexes have been studied by various methods including electronic absoption spectroscopy,cyclic voltammetry,different pulse voltammetry and circular dichroism spectra were used.Gel electrophoresis experiments were also performed to investigate the DNA cleavage of theses complexes.Furthermore Ru(III) and Ir(III) complexes find application as oxidation and hydogenation catalsts. The studies on catalytic activities has been presented.The metal complexes presented in this thesis assure significance as they contribute to the development of new DNA binding agents and antibacterial and anticancer drugs.
Description:
Dept.of Applied Chemistry,Cochin University of Science and Technology
Satheesan,K P; Sebastian,V D(Department of Law, Faculty of Law, 2002)
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Abstract:
The object of every law is to render justice. But sometimes the strict implementation of low may result in injustice. Under such circumstances equity will step in to prevent the injustice. Estoppel is one such concept evolved by equity for rendering justice even deviating from strict legal principles. This study is an analysis of the essence of the principle of estoppel, its scope, circumstances and application. The related principles known as estoppel by record, estoppel by deed, estoppel by representation, promissory estoppel, estoppel against public authority is also considered. Estoppel, originated from the sense of justice, equity and good consciousness has since developed through various judicial pronouncements. Further section 115 of the Evidence Act has statutorily recognized and laid down the principles of estoppel. But Section 115 of the Evidence Act or any other statute does not cover the modern development of estoppel in the form of promissory estoppel.
Susmitha, P Mallaya; Dr.Varkey, A M(Cochin University of Science and Technology, September 15, 2007)
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Abstract:
This is a study in international trade law. Documentary credits are the
most common method of payment for goods in international trade. In India also
these instruments are used both in national and international trade. The law
governing these transactions remains haphazard. This study identifies the
deficiencies in the regulatory framework for documentary credits in India. It
primarily focuses on those areas which exhibits a lack of equality and justice in
its operation. An attempt has also been made to identify the rights and duties of
parties involved in the transaction. The reasons for the increase of fraudulent
activities associated with the documents executed in the documentary credit
transactions are also examined. How far the law in India is sufficient to ensure
fair business practice in international trade financing is also examined.
Methodology adopted for the study is analytical. The statutory provisions, rules
and case laws under these provisions have been examined. An empirical study
by personal interview with the bankers is also made to ascertain the practice of
bankers in India.
Description:
School of
Legal Studies, Cochin University of Science and Technology
Aysha, V; Dr.Kannan, B(Cochin University Of Science And Technology, June 30, 2013)
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Abstract:
The work is intended to study the following important aspects of
document image processing and develop new methods. (1) Segmentation ofdocument images using adaptive interval valued neuro-fuzzy method.
(2) Improving the segmentation procedure using Simulated Annealing
technique. (3) Development of optimized compression algorithms using
Genetic Algorithm and parallel Genetic Algorithm (4) Feature extraction of
document images (5) Development of IV fuzzy rules.
This work also helps for feature extraction and foreground and
background identification. The proposed work incorporates Evolutionary and
hybrid methods for segmentation and compression of document images. A
study of different neural networks used in image processing, the study of
developments in the area of fuzzy logic etc is carried out in this work
Description:
Dept of Computer Applications
Cochin University of Science and Technology
Remya, Robinson; Dr. Paulose, C S(Cochin University of Science and Technology, April , 2007)
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Abstract:
In the present study a detailed investigation on the alterations of dopamine
and its receptors in the brain regions of streptozotocin induced diabetic and insulin
induced hypoglycaemic rats were carried out. Glutamate receptor, NMDARI gene
expression in the hypoglycaemic and hyperglycaemic brain was also studied. EEG
recording in hypoglycaemic and hyperglycaemic will be carried out to measure brain
activity. in vitro studies on glucose uptake and insulin secretion, with and without
specific antagonists were carried out to confirm the specific receptor subtypes - DA
D1, DA D2 and NMDA involved in the functional regulation during hyperglycaemic
and hypoglycaemic brain damage. The molecular studies on the brain damage
through dopaminergic and glutamergic receptors will elucidate the therapeutic role in
the corrective measures of the damage to the brain during hypoglycaemia and
hyperglycaemia. This has importance in the management of diabetes and antidiabetic
treatment for better intellectual functioning of the individual.
Description:
Department of
Biotechnology, Cochin University of Science and Technology
Akash,George K; Dr. Paulose, C S(Cochin University of Science and Technology, September 15, 2006)
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Abstract:
Neuronal dopamine and serotonin receptors are widely distributed in the central and the peripheral nervous systems at different levels. Dopaminergic and serotonergic systems have crucial role in aldehyde dehydrogenase regulation Stimulation of autonomic nervous system during ethanol treatment is suggested to be an important factor in regulating the ALDH function. The ALDH enzyme activity was increased in plasma, cerebral cortex, and liver but decreased in cerebellum. The ALDH enzyme affinity was decreased in plasma, brainstem and liver and increased in cerebral cortex and cerebellum. Dopamine and serotonin content decreased in liver and brain regions - cerebral cortex, corpus striatum of ethanol treated rats with an increased HVA/DA, 5-HIAA/5-HT tumover rate. Dopamine content decreased in brainstem with an increased HVA/DA turnover rate and serotonin content decreased with an increased 5-HIAA/5-HT turnover rate in the brainstem of ethanol treated rats compared to control. Serotonin content increased in hypothalamus with a decreased 5-HIAA/5—HT turnover rate where as dopamine content decreased in hypothalamus with an increased HVA/DA tumover rate of ethanol treated rats compared to control.alterations of DA D2 and 5-HTQA receptor function and gene expression in the cerebellum, hypothalamus, corpus striatum, cerebral cortex play an important role in the sympathetic regulation of ALDH enzyme in ethanol addiction. There is a serotonergic and dopaminergic functional regulation of ALDH activity in the brain regions and liver of ethanol treated rats. Gene expression studies of DA D2 and 5'HT2A studies confirm these observations. Perfusion studies using DA, 5-HT and glucose showed ALDH regulatory function. Brain activity measeurement using EEG showed a prominentfrontal brain wave difference. This will have immense clinical significance in the management of ethanol addiction.
Description:
Department of Biotechnology, Cochin University of Science and Technology
Santhosh, Thomas K; Dr. Paulose, C S(Cochin University of Science & Technology, March , 2006)
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Abstract:
The present study deals with the differential regulation of Dopamine content in
pancreas and functional regulation of Dopamine D2 receptor in brain regions such as
hypothalamus, brain stem, cerebral cortex and corpus striatum play an important role
during pancreatic islets cell proliferation and insulin secretion. Though may reports are
there implicating the functional interaction between DA receptor and pancreatic islets cell
insulin secretion, the involvement of specific DA D2 receptors and changes in second
messenger system during insulin secretion and pancreatic islets cell proliferation were not
given emphasis. Down regulation of DA content in brain regions and pancreatic islets
were observed during pancreatic regeneration. Up regulation of DA content in plasma
and adrenals down regulated sympathetic activity in pancreas which cause an increase in
insulin secretion and pancreatic islets cell proliferation during pancreatic regeneration.
There was a differential regulation of DA D2 receptor in brain regions. The pancreatic
islets DA D2 receptors were lip regulated during pancreatic regeneration. DA D2 receptor
activation at specific concentration has accounted for increased pancreatic islets cell
proliferation. In vitro experiments have proved the differential regulation of DA on
insulin synthesis and pancreatic islets cell proliferation. Inhibitory effect of DA on cAMP
and stimulatory effect of DA on IP3 through DA D2 receptors were observed in in vitro
cell culture system. These effects are correlating with the DA, cAMP and IP3 content
during pancreatic regeneration and islets cell proliferation. Up regulation of intracellular Ca2+ was also observed at 10-8 M DA, a specific concentration of DA which showed
maximum increase of IP3 content in pancreatic islets through DA D2 receptor activation
in in vitro culture. These in vitro data was highly correlating with the changes in DA,
cAMP and IP3 content in pancreas during pancreatic regeneration and insulin secretion.
Thus we conclude that there is a differential functional regulation of DA and DA D2
receptors in brain and pancreas during pancreatic regeneration. In vitro studies confirmed a concentration depend functional regulation of DA through DA D2 receptors on
pancreatic islets cell proliferation and insulin secretion mediated through increased
cAMP, IP3 and intracellular Ca2+ level. This will have immense clinical significance in
the management in diabetes mellitus.
Description:
Department of Biotechnology, Cochin University of Science and Technology
Eswar Shankar,P N; Paulose,C S(DEPARTMENT OF BIOTECHNOLOGY, March , 2003)
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Abstract:
Diabetes Mellitus is a metabolic disorder associated with insulin deficiency, which not.only affects the carbohydrate metabolism but also is associated with various central and peripheral complications. Chronic hyperglycemia during diabetes mellitus is a major initiator of diabetic microvascular complications like retinopathy, neuropathy, The central nervous system (CNS) neurotransmitters play
an important role in the regulation of glucose homeostasis. These neurotransmitters mediate rapid intracellular communications not only within the central nervous system but also in the peripheral tissues. They exert their function through receptors present in both neuronal and non neuronal cell surface that trigger second messenger signaling pathways. Dopamine is a neurotransmitter that has been implicated in various central neuronal degenerative disorders like Parkinson's disease and behavioral diseases like Schizophrenia. Dopamine is synthesised from tyrosine, stored in vesicles in axon terminals and released when the neuron is depolarised. Dopamine interacts with specific membrane receptors to produce its effect. Dopamine plays an important role both centrally and peripherally. The recent identification of five dopamine receptor subtypes provides a basis for understanding dopamine's central and peripheral actions . Dopamine receptors are classified into two major groups : DA D1 like and DA D2 like. Dopamine D1 like receptors consists of DA D1 and DA D5 receptors . Dopamine D2 like receptors consists of DA D2, DA D3 and DA D4 receptors. Stimulation of the DA D1 receptor gives rise to increased production of cAMP. Dopamine D2 receptors inhibit cAMP production, but activate the inositol phosphate second messenger system . Impairment of central dopamine neurotransmission causes muscle rigidity, hormonal regulation , thought disorder and cocaine addiction. Peripheral dopamine receptors mediate changes in blood flow, glomerular filtration rate, sodium excretion and catecholamine release. The dopamine D2 receptors increased in the corpus striatum and cerebral cortex but decreased in the hypothalamus and brain stem indicating their involvement in regulating insulin secretion. Dopamine D2 receptor which has a stimulatory effecton insulin secretion decreased in the pancreatic islets during diabetes. Our in vitro studies confirmed the stimulatory role of dopamine D2 receptors in stimulation of glucose induced insulin secretion. A detailed study at the molecular level on the mechanisms involved in the role of dopamine in insulin secretion, its functional modification could lead to therapeutic interventions that will have immense clinical importance.
Roshni, Baby Thomas; Dr. Paulose, C S(Cochin University of Science And Technology, March 20, 2014)
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Abstract:
In the present work we studied the potential of Bacopa monnieri and Bacoside
A treatment to enhance the antioxidant system and support the neuronal survival
in the hypoglycemic neonatal brain. For achieving the aim, DAD1 and DAD2
receptors functional regulation, gene expression of growth factors, neuronal
survival and apoptotic factors during insulin induced hypoglycemic neonatal brain
in rats were studied.
Description:
Department of Biotechnology
Cochin University of Science and Technology
Jes,Paul; Dr. Paulose, C S(Cochin University of Science and Technology, February , 2011)
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Abstract:
In the present study, the effects of 5-HT, GABA and Bone Marrow Cells
infused intranigrally to substantia nigra individually and in combinations on
unilateral rotenone infused Parkinsonism induced rats. Scatchard analysis of DA,
DA D1 and D2 receptors in the corpus striatum, cerebral cortex, cerebellum, brain
stem and hippocampus showed a significant increase in the Brain regions of
rotenone infused rat compared to control. Real Time PCR amplification of DA D1,
D2, Bax and ubiquitin carboxy-terminal hydrolase were up regulated in the brain
regions of rotenone infused rats compared to control. Gene expression studies of
-Synuclien, cGMP and Cyclic AMP response element-binding protein showed a
significant down regulation in Rotenone infused rats compared to control.
Behavioural studies were carried out to confirm the biochemical and molecular
studies.Our study demonstrated that BMC administration alone cannot reverse the
above said molecular changes occurring in PD rat. 5-HT and GABA acting
through their specific receptors in combination with bone marrow cells play a
crucial role in the functional recovery of PD rats. 5-HT, GABA and Bone marrow
cells treated PD rats showed significant reversal to control in DA receptor binding
and gene expression. 5-HT and GABA have co-mitogenic property. Proliferation
and differentiation of cells re-establishing the connections in Parkinson's disease facilitates the functional recovery. Thus, it is evident that 5-HT and GABA along
with BMC to rotenone infused rats renders protection against oxidative, related
motor and cognitive deficits which makes them clinically significant for cellbased
therapy. The BMC transformed to neurons when co-transplanted
with 5-HT and GABA which was confirmed with PKH2GL and nestin.
These newly formed neurons have functional significance in the therapeutic
recovery of Parkinson’s disease.
Description:
Department
of Biotechnology, Cochin University of Science and Technology
Sindhu, K P; Dr. Rajitha Kumar, S(Cochin University Of Science And Technology, September , 2013)
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Abstract:
Unfortunately, in India it is a fact that most of the investors are not
interested in mutual funds. Those who are investing, they are investing
only very small amounts. But what is important to be noted here is that when compared to other financial instruments, investments in mutual
funds are safer and also yields more returns on the investment portfolio.
Moreover as an investment avenue mutual fund is available for those
investors who are not willing to take any exposure directly in the security
market. It also helps such investors to build their wealth over a period of
time. At the retail level, investors are unique and are highly
heterogeneous, and the mutual fund schemes' selection will also differ
depends on their expectations. Hence, investors’ expectation is a very
important factor in this regard that needs to be analysed by all the
investment houses. Hence, the factors that drive the investment decisions
of individual investors to meet their expectations by investing money in
mutual funds need an in-depth analysis. These driving forces include the
preference of investors on mutual fund compared to various available
avenues of financial investments, risk attitude of investors, influence of
characteristics of instruments of mutual funds on investors, the
investment specific attitudes of investors, and influence of qualities of
fund management on investors. The success of any mutual fund, a
popular means of investment, depends on how effectively an Asset
Management Company has been able to understand the level of influence
of these factors on the decision of investors to invest in mutual funds.
For a substantial growth in the mutual fund market, there must be a high
level precision in the design and marketing of the products of mutual
funds taking into account these driving forces by the Asset Management
Companies. Therefore, there is a need to conduct a detailed study on
investments in mutual funds in this direction. A review of available
literature also revealed that no detailed study on mutual funds has so far
been attempted in this direction; hence the present study on Driving
Forces of Investment Decisions in Mutual Funds is undertaken.
Description:
School Of Management Studies
Cochin University Of Science And Technology
Leena,P; Dr.Babu, C A(Department of Atmospheric Science, 2000)
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Abstract:
The objective of the study is to examine the dynamic and thermodynamic structure and the variations that occur in the surface layer during the pre-monsoon, onset and post-monsoon periods over the Indian region. The variations caused during the occurrence of micro and mesoscale systems, structure and variation in the marine boundary layer over the Indian region is also investigated. The drag coefficient computed indirectly also shows variation during various seasons. The thermodynamic structure of the atmosphere shows variation during the various seasons. The onset monsoon causes lowering of the Lifting Condensation Levels. The outcome of the study is expected to provide a better understanding of the structure and variations in the boundary layer over India, which is useful for many applications especially for numerical modeling studies.
Hamza, Varikoden; Dr.Babu, C A(Department of Atmospheric Science, May , 2006)
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Abstract:
Atmospheric Boundary layer (ABL) is the layer just above the earth surface and is influenced by the surface forcing within a short period of an hour or less. In this thesis, characteristics of the boundary layer over ocean, coastal and inland areas of the atmosphere, especially over the monsoon regime are thoroughly studied. The study of the coastal zone is important due to its high vulnerability mainly due to sea breeze circulation and associated changes in the atmospheric boundary layer. The major scientific problems addressed in this thesis are diurnal and seasonal variation of coastal meteorological properties, the characteristic difference in the ABL during active and weak monsoons, features of ABL over marine environment and the variation of the boundary layer structure over an inland station.
The thesis describes the various features in the ABL associated with the active and weak monsoons and, the surface boundary layer properties associated with the active and weak epochs. The study provides knowledge on MABL and can be used as the estimated values of boundary layer parameters over the marine atmosphere and to know the values and variabilities of the ABL parameters such as surface wind, surface friction, drag coefficient, wind stress and wind stress curl.
Joseph, P V; Jacob,Chacko(Department of Chemical Oceanography, 2002)
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Abstract:
The proposed study is an attempt to quantify and study the seasonal and spatial variations in the distribution of Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb among the various geochemical phases in the surficial sediments of Chitrapuzha river. The study also estimates the concentration of heavy metals in dissolved, particulate and sediments and their variation in seasonal and spatial distribution. Chitrapuzha River originates as a small stream from the upper reaches of high ranges in the eastern boundary of Kerala, passes through the valley and finally joints in the Cochin backwaters. Numerous industrial units located along the banks of the river discharge treated and untreated effluents into the water. These are long standing local complaints about water pollution causing fish mortality and serious damage to agricultural crops resulting in extensive unemployment in the area. The river is thus of considerable social and economic importance.
Sabu,P; Dr.Revichandran,C(Cochin University of Science & Technology, January , 2009)
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Abstract:
The present study
examines the importance of low saline waters and resulting barrier layer
in the dynamics of the ASWP using observational data.The oceanic general circulation models (OGCM) are very useful for
exploring the processes responsible for the ASWP and their variability.
The circulation and thermohaline structure stimulated by an OGCM
changes a lot when the resolution is increased from mesoscale to macro
scale. For a reasonable simulation of the ASWP, we must include the
mesoscale turbulence in numerical models. Especially the SEAS is an
eddy prominent region with a horizontal dimension of 100 to 500 km and
vertical extent of hundred meters. These eddies may have an important
role on the evolution of ASWP, which has not been explored so far.Most of the earlier studies in the SEAS showed that the heat buildup
in the mixed layer during the pre-monsoon (March-May) is primarily
driven by the surface heat flux through the ocean-atmosphere interface,
while the 3-dimensional heat budget of the ML physical processes that are
responsible for the formation of the ASWP are unknown. With this
background the present thesis also examines the relative importance of
mixed layer processes that lead to the formation of warm pool in the
SEAS.
Philip, Thomas; Dr.Meera Bai,M(Cochin University of Science and Technology, May , 1996)
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Abstract:
The following objectives have been formulated for
the study.
To assess the procurement and marketing practices of
Non—Timber Forest Produce by tribes and Tribal
Co-operative Societies and examine the role of
co—operatives in liberating the tribes from the clutches
of private traders.
To study the relative efficiency of marketing channels.
To analyse the inter—difference between tribes and
regions in the collection and marketing of Non—Timber
Forest produce.
To examine the forward linkage of tribal co-operative
societies with the Ayurvedic Medicinal Manufacturing
Units of the state.
To examine the impact of marketing on employment and
income of tribes and
To examine the extent of involvement of tribes in Tribal
Co-operative Societies in policy formulation and
implementation.
Description:
Department of Applied Economics.
Cochin University of Science and Technology
Haseena, V A; Dr.Meera Bai,M(Cochin University of Science and Technology, September 9, 2006)
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Abstract:
This thesis Entitled Dynamics of deforestation and Socio-Economic profile of tribal women flok in kerala -A study of Attappady. The study was based on both primary and secondary data. Primary data
were collected through a sample survey conducted in three panchayaths .The thesis is organized in eight chapters. The first chapter provides the background to the study. Second chapter reviews the literature. Third chapter provides the profile of the study area and general conditions. Fourth chapter
consists of the life cycle structure of the tribal woman. Fifth chapter covers the socio-economic conditions of the tribal women in the study area. Sixth chapter consists of relationship between tribal women and forest and the degradation of the forest. Seventh chapter provides the documentation of the development programmes implemented in Attappady and their importance to the tribals. Last chapter consists of summary and conclusions of the study, suggestions and recommendations of the study.
Description:
Department of Applied Economics, Cochin University of Science and Technology
Jayaraj,K A; Saramma,U Pananpunnayil(National institute of oceanography, 2006)
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Abstract:
In this study dynamics of infaunal benthic community of the continental shelf of north-eastern Arabian sea. The benthic (under water sea) organisms play an important role in the marine food chain. It can be concluded that seasonal differences in the benthic community was observed in lower depths and absent in deeper depths. Increased richness and diversity during pre-monsoon may be related to the increased primary production which inturn influenced by the increased nutrient input due to winter convection. No single ecological factor could be considered as a master factor. In general the area supports moderately high benthic production and diversified community.
Sanathanan,Velluva; Muraleedharan,P K; Mary,Joseph(Kerala Forest Research Institute& Department of Applied Economics, 1999)
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Abstract:
The present study on the dynamics of land use in recently settled forest areas. In the course of events, tribals lost their land; the demographic structure of Attappady changed; the cropping pattern got diversified; traditional techniques of production were ruined; new crops and new techniques of cultivation came to stay; and the entire cost and return structure of production underwent radical change. Migration to Attappady is essentially a continuation of the Malabar migration process from Travancore, through, some people from Tamil Nadu also had migrated to this region earlier. The demographic structure, along with land structure, has changed in favour of the settlers within a short span of time. Lack of security of ownership has acted as a strong reason for wanton exploitation of land resources. The major influencing factors on crop choices among settlers were labour endowment, date of settlement and education. Attappady is an unique ecosystem in Kerala characterized by many interdependables. The latest hand of environmental degradation is a grave danger especially on sloppy terrains,which are under cultivation of tapioca and dry annual crops like groundnuts, cotton, grams etc. Soil erosion as a result of the unplanned cultivation of these crops has resulted in dramatic decline in soil fertility and hence low crop productivity. This calls for a watershed management approach for the sustainable development of the region. A progressive agrarian transformation is warranted to maintain the homegarden as a sustainable production system in ecological and socio-economic terms.
Babu, V; Dr.Muraleedharan Nair, S(Cochin University Of Science And Technology, June , 2001)
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Abstract:
The tremendous growth in industrial production and the consequent
improving in the standards of living have provoked worldwide discussion on
environmental quality. The question of abusive use of pesticides for crop protection
and vector control programmes is only one aspect of this entire complex. Inspite of
this, tendentious publications such as Rachel Carson’s Silent spring have brought
crop protection into the foreground of environmental discussions. The persistence
and high stability of organochlorine pesticides are regarded as problematic and the
accumulation of pesticides residues and its metabolites in the different
compartments of the environment is one of the major concerns. Because of their
persistence in the aquatic environment and biomagnifications in food chain, the
continuous use of pesticides will have wider implications not only in aquatic
environmental quality but also on human health. The residual levels of these
persistent chemicals exceed their permissible limits, and get partitioned among the
constituent phases of the aquatic systems. Crop protection is only part of the
agricultural economy and in agriculture itself has led to the most fundamental
changes in the human environment. So, in all areas of life one must weigh the
desired advantages against possible disadvantages.
The proposed thesis is based on the investigations on the distributions of
organochlorine and organophosphorus pesticides in the waters and sediments of
Kuttanad backwaters. Kuttanad, a unique agricultural area, which forms the
southern part of the Vembanad lake, is a deltaic formation of four river systems
entering the southern part of the Cochin estuary. No systematic study has ever been
done to assess the ecotoxicological impact of these diverse chemicals and their
metabolites in Kuttanad area. So, a detailed systematic and rigorous investigation
on the distributions of these persistent chemicals is carried out.
The thesis is divided into 7 Chapters
Description:
Department of Chemical
Oceanography, School of Marine Sciences, Cochin University of Science and
Technology
Sujatha, C H; Dr.Jacob, Chacko(Cochin University of Science and Technology, July , 1992)
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Abstract:
Industrial pollutants, consisting of heavy metals, petroleum residues, petrochemicals, and a wide spectrum of pesticides, enter the marine environment on a massive scale and pose a very serious threat to all forms of aquatic life. Although, earlier, efforts were directed towards the identification of pollutants and their major sources, because of a growing apprehension about the potential harm that pesticides can inflict upon various aquatic fauna and flora, research on fundamental and applied aspects of pesticides in the aquatic environment has mushroomed to a point where it has become difficult to even keep track of the current advances and developments. The Cochin Estuarine System (CES), adjoining the Greater Cochin area, receives considerable amounts of domestic sewage, urban wastes, agricultural runoff as well as effluent from the
industrial units spread all along its shores. Since preliminary investigations revealed that the most prominent of organic pollutants discharged to these estuarine waters were the pesticides, the present study was designed to analyse the temporal and spatial distribution profile of some of the more toxic, persistent pesticides ——— organochlorines such as DDT and their metabolites; HCH-isomers; a cyclodiene compound," Endosulfan and a widely distributed, easily degradable,
organophosphorus compound, Malathion, besides investigating their sorptional and toxicological characteristics.
Although, there were indications of widespread contamination of various regions of the CBS with DDT, HCH-isomers etc., due to inadequacies of the monitoring programmes and due to a glaring void of baseline data the causative factors could not identified authentically. Therefore, seasonal and spatial distributions of some of the more commonly used pesticides in the CES were monitored systematically, (employing Gas Chromatographic techniques) and the results are analysed.
Description:
Chemical
Oceanography Division, School of Marine Sciences, Cochin University
of Science and Technology