Bindu Bhaskaran, A B; Dr.Mohammed Salih,K Y(Cochin University Of Science And Technology, March 14, 2011)
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Abstract:
Fishes are one of the most important members of the aquatic food chain, and
through them some toxicants may reach human beings as well. The selection of
organisms for toxicity test is mainly based on certain criteria like its ecological
status, position within the food chain, suitability for laboratory studies, genetically
stable, uniform populations and adequate background data on the organism
(Buikema et al., 1982). The species selected for the present study Etroplus
maculatus satisfy most of the above protocols. Rechten (1980) opined it as a
laboratory favorite of fish researchers. However, there are difficulties in the rise of
fishes for pollution assessment impact. Most important of these is our limited
understanding of the mechanism of toxicity. The interpretation of the significance or specificity of a measured biological response could there for become difficult.
Not withstanding these limitations, attempts have been made to the normal
haematology and to analyze the impact of heavy metal at realistic levels to the
experimental media, on the haematology, and enzymatic activity and histology of
Etroplus maculatus
Description:
Dept. of Marine Biology, Microbiology and Biochemistry
Cochin University of Science and Technology
Annies, Joseph; Dr.Rosamma,Philip(Cochin University of Science and Technology, July , 2008)
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Abstract:
This thesis Entitled Haematological responses of penaeus monodon to environmental alterations and pathogenic invasion. Thesis concluded from the present study that stress is accompanied by
alterations in haemolymph metabolic variables and immune responses that influences the susceptibility of P. monodon to infection. Acute salinity variations were proved to be a stress condition that enhances the susceptibility of P. monodon to V. harveyi and WSSV infection. Ambient Cu at 0.1 mg 1" and ambient Zn at 1.0 mg 1" proved immunostimulatory in increasing the immunocompetence of P. monodon to WSSV infection and higher concentrations of Cu and Zn proved immunosuppressive.
Haemolymph total protein, total carbohydrates and total lipids showed the highest relation with immune responses. THC, PO, ACP and ALP that greatly correlated with the survival rate proposed as reliable biomarkers of health in P. monodon. The study highlights the need for proper management practices and regular health monitoring to be adopted to avoid mass mortality in shrimp culture ponds.
Description:
Department of Marine Biology, Microbiology and Biochemistry,
School of Ocean Science and T echnology,
Cochin University of Science and Technology
Selven,S; Dr.Rosamma,Philip(Cochin University of Science and Technology, May , 2008)
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Abstract:
Aquaculture has developed to become one of the fastest growing food producing sectors in the world.Today India is one among the major shrimp producing countries in the world.There are extensive and intensive shrimp culture practices. In
extensive shrimp culture, shrimps are stocked at low densities (< 25 PLs m'2)in large ponds or tidal enclosures in which little or no management is exercised or possible. Farmers depend almost entirely on natural conditions in extensive cultures. Intensive shrimp culture is carried out in
high densities (>200 PLs m'2). Much of the world shrimp production still comes from extensive culture.There is a growing demand for fish and marine products for human and animal consumption. This demand has led to rapid growth of
aquaculture, which some times has been accompanied by ecological impacts and economic loss due to diseases. The expansion of shrimp culture always accompanies local environmental degradation and
occurrence of diseases.Disease out breaks is recognised as a significant constraint to aquaculture production. Environmental factors, water quality, pollution due to effluent discharge and pathogenic invasion due to vertical
and horizontal transmission are the main causes of shrimp disease out breaks. Nutritional imbalance, toxicant and other pollutants also account for the onset of diseases.
pathogens include viruses, bacteria, fungi and parasites.Viruses are the most economically significant pathogens of the cultured shrimps world wide. Disease control in shrimp aquaculture should focus first on preventive measures for eliminating disease promoting factors.ln order to design prophylactic and proactive measures against shrimp diseases, it is mandatory to understand the immune make up of the cultivable species,
its optimum culture conditions and the physico chemical parameters of the rearing environment. It has been proven beyond doubt that disease is an end result of complex interaction of environment, pathogen and the host animal. The aquatic environment is abounded with infectious microbes.The transmission of disease in this environment is extremely easy,
especially under dense, culture conditions. Therefore, a better understanding of the immune responses of the cultured animal in relation to its environmental alterations and microbial invasions is essential indevising strategic measures against aquaculture loss due to diseases. This study accentuate the importance of
proper and regular health monitoring in shrimps employing the most appropriate haematological biomarkers for application of suitable prophylactic measures in order to avoid serious health hazards in shrimp culture systems.
Suresh, K; Dr.Mohandas, A(Cochin University of Science And Technology, January , 1988)
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Abstract:
It is well known that under certain conditions, populations of oysters
and clams are susceptible to destructive epizootics caused by pathogenic
micro-organisms. It has also been shown that exposure of mammals to certain
heavy metals causes increased susceptibility to and severity of microbial
infections (Koller, 1980). Consequently, pollutants that affect haemocyte
viability or interfere with internal defence functions of the haemocytes which
are considered as the major means of defence in moliuscs against invading
foreign organisms and pathogens (Cheng, 1981) may have profound effect on
long term survival of molluscan populations. All these justify the significance
of the present study in the context of the current status on molluscan
culture programme, and how the data on molluscan haematological studies
.could be taken as the reliable criteria for pollution monitoring studies.
Description:
School of Marine Sciences, Cochin University of Science and Technology
Neil, Scholastin Correya; Dr.Rosamma,Philip(Cochin University of Science And Technology, October , 2012)
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Abstract:
The marine environment is indubitably the largest contiguous habitat on
Earth. Because of its vast volume and area, the influence of the world ocean on
global climate is profound and plays an important role in human welfare and
destiny. The marine environment encompasses several habitats, from the sea
surface layer down through the bulk water column, which extends >10,000 meters
depth, and further down to the habitats on and under the sea floor. Compared to
surface habitats, which have relatively high kinetic energy, deep-ocean circulation
is very sluggish. By comparison, life in the deep sea is characterized by a relatively
constant physical and chemical environment. Deep water occupying the world
ocean basin is a potential natural resource based on its properties such as low
temperature, high pressure and relatively unexplored properties. So, a judicious
assessment of the marine resources and its management are essential to ensure
sustainable development of the country’s ocean resources.
Marine sediments are complex environments that are affected by both
physiological and biological factors, water movements and burrowing animals.
They encompass a large extent of aggregates falling from the surface waters. In
aquatic ecosystems, the flux of organic matter to the bottom sediments depend on
primary productivity at the ocean surface and water depth. Over 50% of the earth’s
surface is covered by deep-sea sediments that are primarily formed through the
continual deposition of particles from the productive pelagic waters (Vetriani et al.,
1999). These aggregates are regarded as ‘hot spots’ of microbial activity in the
ocean (Simon et al., 2002). This represents a good nutritional substrate for
heterotrophic bacteria and favours bacterial growth
Description:
School of Marine Sciences, Cochin University of Science And Technology
Santhi, Thirumani S; Dr.Chandrika, V(Cochin University of Science And Technology, June , 1992)
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Abstract:
The principal interest of the present investigation was to determine
seasonal and vertical variation of chemoorganotrophic utilisation of glucose
and sodium—acetate by the natural bacterial population in the aquaculture
pond of Narakkal, Cochin using techniques which allow maintenance of
the in situ gaseous concentrations during incubation. In addition salinity,
dissolved oxygen, temperature, hydrogen—ion—.concentration, primary production,
plant pigments and total bacterial concentration were determined
seasonally and vertically because of their possible relationship to chemoorganotrophy.
Hamsakutty, V; Dr.Mathew, K T(Cochin University of Science and Technology, March , 2007)
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Abstract:
In this thesis, the author proposes a new geometry DR antenna-the Hexagonal Dielectric Resonator Antenna(HDRA)-capable of multiple frequency operation on a single feed of excitation.This avoids the conventional use of miniaturizes the structure.The properties of the HDRA on microstrip as well as coaxial feeding have been studied.The analysis of radiation characteristics indicates a gain comparable with other shapes.The antenna is capable of providing efficiency around 98%.The simulation using HFSS also yields results in conformity with the experimental results.Mode analysis is carried out and the modes are identified.The determination of the reflection characteristics through theoretical analysis using FDTD validates the multifrequency operation of the antenna,The antenna finds application in DCT,PCS and WLAN bands.
Description:
Department of
Electronics, Cochin University of Science and Technology
Vimalkumar, T V; Dr.Vijayakumar, K P(Cochin University of Science & Technology, August , 2011)
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Abstract:
In the present work we report the preparation details studies on ZnO thin films. ZnO
thin films are prepared using cost effective deposition technique viz., Chemical Spray
Pyrolysis (CSP). The method is very effective for large area preparation of the ZnO thin
film. A new post-deposition process could also be developed to avoid the adsorption of
oxygen that usually occurs after the spraying process i.e., while cooling. Studies were done
by changing the various deposition parameters for optimizing the properties of ZnO thin
film. Moreover, different methods of doping using various elements are also tried to
enhance the conductivity and transparency of the film to make these suitable for various
optoelectronic applications.
Description:
Department of Physics,
Cochin University of Science and Technology
Anekutty, Joseph; Dr.Madhusoodana,Kurup B(Cochin University of Science and Technology, August , 2002)
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Abstract:
This thesis entitled “Histological ,Histochemical and biochemical characterisation of male morphotypes of macrobrachium rosenbergii(De Man). The giant fresh water prawn Macrobrachium rosenbergii (de Man) is emerging as a prime candidate species in fresh water aquaculture as a global basis and therefore, receiving much attention in recent years.the present work was aimed at to study the histological variations, if any, in the reproductive system viz. testes, vas deferens including androgenic gland, hepatopancreas and the neurosecretory system viz. eye stalk, brain and thoracic ganglion among the male morphotypes and their transitional stages of M.rosenbergii from growouts. This study was also aimed at to bring out the histochemical variations, if any, in the reproductive system comprising of testes, vas deferens including androgenic gland and the hepatopancreas among the male morphotypes and their transitional stages collected from growouts. Biochemical characterisation of various male morphotyes and their transitional stages have also been attempted in order to find out biochemical evidence, if any, in the morphotypic transformation.Histological study of the testes of three male morphotypes viz., SM, SOC and SBC and their 'transitional stages viz., WOC, tSOC, WBC and OBC have been carried out with a view to unravel the structural and functional differences of the testes, if any, of these morphotypes. Studies on the lipid components viz., cholesterol, phospholipid and triglyceride In the muscle tissue and hepatopancreas have been carried out.
Description:
School of Marine Science, Department of Industrial Fisheries, Cochin University of Science and Technology
Chacko, Jose P; Dr.Jose, Payyappilly T(Cochin University of Science and Technology, November 16, 1999)
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Abstract:
The present thesis critically analyzes the micro level issues that influence the rural household energy behavior in Kerala. The aim of the study is to examine the energy consumption pattern at the household level in rural Kerala and to assess the variations in rural household energy consumption pattern across geo-climatic and socio-economic clusters. The researcher assess the attitudes of the rural households towards energy sources, uses and devices. The study tries to identify the factors influencing the adoption of energy conservation practices and shift to the improved energy
Description:
Depatment of Applied Economics, Cochin University of Science and Technology
Rajini,K M; Dr.Sankaranarayanan, K C(Cochin University of Science and Technology., October , 2009)
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Abstract:
The study is entitled “HUMAN RESOURCES DEVELOPMENT
IN HIGHER EDUCATION IN KERALA”. The concept “Human
Resource Development” is of high value in business and industry
and has been used and applied since years. In industry and
business the ‘human’ element is considred as a resource and hence
its development and protection is very essential and inevitable. Of all
the factors of production, human resource is the only factor having
rational faculty and therefore, it must be handled with utmost care.
Right recruitment, right training and right induction followed by
faultless monitoring and welfare measures are but decisive factors in
business and industiy. Altogether there is a constant attention up on
human factor there. But this is not a practice at all in education. So
far there has not been any such measure of care and close watch
and performance analysis of human resource on education front.
This may be the main reason for lack of accountability in the sphere
of education. The present study reveals the importance of
introducing HRD practices in higher educational institutions in
Kerala. In order to promise human capital formation through
education, it is basic requirement. The higher educational
institutions must follow the method of industry and commerce
because education can be treated as an industry in service sector.
There also we can follow the methods of right recruitment, right
training and promotion, delegation, performance analysis and
accountability checking of human resource. HRD is a powerful idea
of transformation of human being into highly productive and
contributing factor The HRD of students is the sum total of HRD of
teachers. Reminding the primordial usage ‘Yatha Raja Thadha Praja’
the quality of faculty resembles in students. The quality of
administrative staff in colleges also affects the quality of higher
education. Hence, it is high time to introduce the managerial method
of HRD with all its paraphernalia in higher educational institutions
so as to assure proper human capital formation in higher education
in India.
Description:
Department of Applied Economics,
Cochin University of Science and Technology
Rajini,K M; Dr.Sankaranarayanan, K C(Cochin University of Science and Technology, October , 2009)
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Abstract:
The study is entitled “HUMAN RESOURCES DEVELOPMENT IN HIGHER EDUCATION IN KERALA”. The concept “Human Resource Development” is of high value in business and industry and has been used and applied since years. In industry and business the 'human' element is considred as a resource and hence its development and protection is very essential and inevitable. Of all the factors of production, human resource is the only factor having rational faculty and therefore, it must be handled with utmost care. Right recruitment, right training and right induction followed by faultless monitoring and welfare measures are but decisive factors in business and industry. Altogether there is a constant attention up on human factor there. But this is not a practice at all in education. So far there has not been any such measure of care and close watch and performance analysis of human resource on education front. This may be the main reason for lack of accountability in the sphere of education. The present study reveals the importance of introducing HRD practices in higher educational institutions in Kerala. In order to promise human capital formation through education, it is basic requirement. The higher educational institutions must follow the method of industry and commerce because education can be treated as an industry in service sector. There also we can follow the methods of right recruitment, right training and promotion, delegation, performance analysis and accountability checking of human resource. HRD is a powerful idea of transformation of human being into highly productive and contributing factor The HRD of students is the sum total of HRD of teachers. Reminding the primordial usage 'Yatha Raja Thadha Praja’ the quality of faculty resembles in students. The quality of administrative staff in colleges also affects the quality of higher education. Hence, it is high time to introduce the managerial method of HRD with all its paraphernalia in higher educational institutions so as to assure proper human capital formation in higher education in India.
Description:
Department of Applied Economics,
Cochin University of Science and Technology
Krishna Kumar,N; Sadasivan Nair,G(SCHOOL OF LEGAL STUDIES, 2004)
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Abstract:
Human rights are the basic rights of every individual against the state or any other public authority as a member of the human family irrespective of any other consideration. Thus every individual of the society has the inherent right to be treated with dignity in all situations including arrest and keeping in custody by the police. Rights of an individual in police custody are protected basically by the Indian Constitution and by various other laws like Code of Criminal Procedure, Evidence Act, Indian Penal Code and Protection of Human Rights Act. The term `custody' is defined neither in procedural nor in substantive laws. The word custody means protective care. The expression `police custody' as used in sec. 27 of Evidence Act does not necessarily mean formal arrest. In India with special reference to Kerala and evolution and development of the concept of human rights and various kinds of human rights violations in police custody in different stages of history. Human rights activists and various voluntary organisations reveals that there are so many factors contributing towards the causes of violations of human rights by police. Sociological causes like ambivalent outlook of the society with respect to the use of third degree methods by the police, economic causes like meager salary and inadequate living conditions, rampant corruption in police service, unnecessary political interference in the crime investigation, work load of police personnel without any time limit and periodic holidays, unnecessary pressure from superior police officers and the general public for speedy detection causing great mental strain to the investigating officers, defective system of recruitment and training, imperfect system of investigation and lack of public co-operation are some of the factors identified in the field survey towards the causes of violations of human rights in police custody.