Santhosh,S; Mathew,P T(Cochin University of Science and Technology, October , 2006)
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Abstract:
The present study examined the antiulcer effect of glucosamine on mucosal antioxidant defense system in ibuprofen-induced peptic ulcer in male albino rats. The results of the present study indicate that the pre-oral administration of chitosan and glucosamine maintain near to the normal status the activities of the mucosal antioxidant enzymes and the level of GSH (Glutathione), which protect mucosa against oxidative damage by decreasing the lipid peroxidation and strengthening the mucosal barrier, and which are the first line of defense against exogenous ulcerogenic agents. In this study indicate that the oral pre-treatment of chitosan and glucosamine can prevent ibuprofen-induced peptic ulcer in rats.This study can be concluded that co-administration of chitsosan and glucosamine can effectively prevent the isonized and rifampicin induced hepatotoxicity in rats.Comparatively, chitosan was found to have better results than glucosamine in alleviating the hepatic disorders
Babu,C A; Dr.Viswanadham,D V; Dr.Ram Mohan,H S(Cochin University of Science and Technology, January , 1989)
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Abstract:
The main aim of the study is to give a clear picture of various meteorological factors affecting the dispersal of pollutants. One such important developing metropolis, namely Madras, is chosen for the present study. The study throws light into the occurrence of inversions, isothermals and lapse conditions and the vertical and horizontal extent of mixing of pollutants. The thesis also aims to study the wind climatology and atmospheric stability .The study gives a insight to the spatial distribution of sulphudioxide concentration using the Gaussian plume model, which accounts for various industrial sources. The researcher suggests optimum locations for industries and various steps to reduce air pollution.
Description:
School of Marine Sciences, Cochin University of
Science and Technology
Saramma, A V; Dr. Babu, Philip(Cochin University of Science and Technology, December , 1992)
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Abstract:
This thesis Entitled Studies on amylolytic bacteria in cochin backwaters.This thesis presents a detailed account of the disribution of amylolytic bacteria in water. sediment. fishes ( Etroplus suratensis and Liza parsia) • prawns ( Penaeus indicus and Metapenaeus dobsoni) and clams ( Sunetta scripta and Meretrix casta) from Cochin backwaters. genera-wise distribution of amylolytic bacteria, ability of selected strains to grow and produce amylase at various physico-chemical conditions. Regulation of amylase synthesis anrt characters of amylases producer by these halophilic bacteria.Amylolytic bacteria are distributed widely in water. sediment. fishes. prawns and clams of Cochin back waters. 53% of the total isolates tested were capable of producing amylase. Maximum number of arnylolytic bacteria were present in Metapenaeus dobsoni. In general, the gut region of aquatic animals harboured more amylolytic bacteria than the gill or surface. These bacteria may help in the digestion of starch present in their food.Presence of ions in the medium was found to be essential for growth and amylase production. It was found that this ionic requirement is not highly specific. Sorlium chloride could be replaced by potassium chloride. or magnesium chloride to some extent I without affecting growth and amylase production. The important function of these ions may be to maintain the osmotic balance between the cells and their environment.All the isolates showed the ability to grow and produce amylase using raw-starches from cassava. plantain and potato .This property suggests their role in the rdegradation of native starches in the environment
Description:
School of Marine Sciences, Cochin
University of Science and Technology
Kuruvila, Mathew; Dr.Kurian, C V(Cochin University of Science And Technology, April , 1978)
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Abstract:
The present study was undertaken with a view to understanding some aspects of the morphology, bionomics and physiology of the sea anemone A.nigrescens. This species was selected for the study since it is abundantly available along the coast throughout the year and can successfully reared in the laboratory without much effort. The present study deals with the following aspects of A.nigrescens. description of the species, habitat, food and feeding, digestion, studies on salinity tolerance, studies on oxygen consumption, studies on tolerance to desiccation, asexual reproduction and regeneration.
Description:
School of marine sciences, Cochin University of Science And Technology
Pradeep,R; Dr.Lakshmanaperumalsamy, P(Cochin University Of Science And Technology, July 28, 1986)
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Abstract:
Microbiological studies on the incidence, behaviour,
activity and ecological implications of marine micro~organisms,
particularly microbial pathogens in coastal waters and
estuaries exhibit the increasing concern and awareness
of environmental impacts on health and wealth. Marine
microbiologists have been active in investigating on the
distribution, kinds of organisms and their activity in the
environment. However, informations on the effect of environment
on the ecology or on the distribution (spatial/temporal) of
microbial comunity and competition among groups inhabiting
the ecosystem are sparE§L Estuarine environment are complex
with respect to diversity of habitats, variation in physicochemical
parameters and contamination by terrestrial bacterial
species.
Being the organisms of‘public health significance,
ecological studies on total coliforms, faecal coliforms,
faecal streptococci, §. ggli and X. parahaemolyticus have great
relevance as studies of these types would provide a wealth
of information to environmentalists and to fishery industry.
In order to evalé%e the status, role and significance of
potentially hazardous bacterial species in natural environment
it is necessary to monitor the ecology of such organisms
systematically in relation to physico-chemical parameters
Description:
Division Of Marine Biology. Microbiology And Biochemistry
School Of Marine Sciences
Cochin University Of Science And Technology
Vijayakumar, S; Dr.George, M K(Cochin University of Science and Technology, May , 1992)
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Abstract:
The thesis deals with the results of an investigation on the "BIOCHEMICAL GENETICS OF MUGIL CEPHALUS" from Cochin, Madras and Orissa. It is presented under the following major headings: Introduction, Review of Literature, Materials and Methods, Results, Discussions, Conclusions, Recommendations, Summary and References.The introduction gives a brief account of historical and modern back ground on the stock concept in fisheries research and management, followed by the importance and potential role of biochemical genetics in the identification of natural units of fisheries management.
In the review of literature published reports relevant to biochemical genetics with special reference to that of general proteins and enzyme systems of fish populations were considered. A detailed account of the source of experimental specimens, mode of collection, transportation, sample extraction, gel preparation/gel electrophoresis, buffer systems, staining procedures of proteins/enzymes, standardization of experiments, interpretation of electrophoretic data using basic formulae etc. are given in the materials and methods section. Four important conclusions were drawn on the basis of the results of the present investigation. Three recommendations were also made on the basis of evaluation
of the results.
Shaju S.S.; Dr. B. Meenakumari; Dr. Muhamed Ashraf, P(Cochin University of Science and Technology, March , 2015)
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Abstract:
In situ methods used for water quality assessment have both physical
and time constraints. Just a limited number of sampling points can be
performed due to this, making it difficult to capture the range and variability
of coastal processes and constituents. In addition, the mixing between fresh
and oceanic water creates complex physical, chemical and biological
environment that are difficult to understand, causing the existing measurement
methodologies to have significant logistical, technical, and economic
challenges and constraints.
Remote sensing of ocean colour makes it possible to acquire
information on the distribution of chlorophyll and other constituents over large
areas of the oceans in short periods. There are many potential applications of
ocean colour data. Satellite-derived products are a key data source to study the
distribution pattern of organisms and nutrients (Guillaud et al. 2008) and
fishery research (Pillai and Nair 2010; Solanki et al. 2001. Also, the study of
spatial and temporal variability of phytoplankton blooms, red tide
identification or harmful algal blooms monitoring (Sarangi et al. 2001; Sarangi
et al. 2004; Sarangi et al. 2005; Bhagirathan et al., 2014), river plume or
upwelling assessments (Doxaran et al. 2002; Sravanthi et al. 2013), global
productivity analyses (Platt et al. 1988; Sathyendranath et al. 1995;
IOCCG2006) and oil spill detection (Maianti et al. 2014). For remote sensing
to be accurate in the complex coastal waters, it has to be validated with the in situ measured values. In this thesis an attempt to study, measure and validate
the complex waters with the help of satellite data has been done.
Monitoring of coastal ecosystem health of Arabian Sea in a synoptic way
requires an intense, extensive and continuous monitoring of the water quality
indicators. Phytoplankton determined from chl-a concentration, is considered as
an indicator of the state of the coastal ecosystems. Currently, satellite sensors
provide the most effective means for frequent, synoptic, water-quality
observations over large areas and represent a potential tool to effectively assess
chl-a concentration over coastal and oceanic waters; however, algorithms
designed to estimate chl-a at global scales have been shown to be less accurate
in Case 2 waters, due to the presence of water constituents other than
phytoplankton which do not co-vary with the phytoplankton. The constituents of
Arabian Sea coastal waters are region-specific because of the inherent
variability of these optically-active substances affected by factors such as
riverine input (e.g. suspended matter type and grain size, CDOM) and
phytoplankton composition associated with seasonal changes.
John Chellappan, N; Dr.Varghese, Oommen P(Cochin University Of Science And Technology, February 27, 1989)
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Abstract:
The study was undertaken with the aim to study
the variation of different components in the drip/liquid
and meat sampled at different stages of processing.
The fresiand the frozen oyster meat were canned in Tin
and in Aluminium cans. Various media like brine, oil,
tomato sauce and wine were used. Observations were made
physically and chemically for the drip/liquids and the
meat at different stages of processing. The chemical
analysis were made for certain nutritional and mineral
components
Description:
Department of Marine Sciences,Cochin University Of Science And Technology
Sriramachandra Murty, V(Cochin University of Science and Technology, August , 1995)
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Abstract:
This thesis Entitled Studies on certain exploited marine Finfish Resources of india.Marine fish catch forecasting is short term or long term basis for purposes of explation and management. Among the short term forecasts, two approaches need serious consideration in India: 1. to improve the methods of understanding the influence of environmental characteristics on the abundance or availability of fish in different areas in different periods and to make the forecasts of the same, 2. to make analysis of time series catch data (ARIMA models) to make forecasts of catch in the next year or in a particular period during next year. There is some evidence of suitability of these approaches to Indian marine fisheries but attempts aiming at comprehensive studies should be made. In the area of long term forecasts, considerable work is done in India on single species assessments but in the context of multi species, multigear nature of Indian marine fisheries, assessments of all species together in a mixed fishery are urgently required for effective managements of fisheries.
Description:
School of Marine Scxience, Cochin University of Science and Technology
Ivy,Thomas; Dr.Chandramohan, D(Cochin University Of Science And Technology, April 21, 1982)
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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