Jitha, G; Dr.Ammini, Joseph(Cochin University of Science and Technology, October , 2005)
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Abstract:
The microalgae gained importance as food and feed as well as source of fine
chemicals since the l960’s. Spirulina became the trend setter due to its easily
culturable properties as well as nutritional composition. A rapid expansion of
microalgal industry occurred in the Asia-Pacific region as microalgae came to
stay as a health food supplement.
Microalgae have been an integral component of oxidation ponds usually
incorporated with wastewater treatment. Over the last few decades, efforts
have been made to apply intensive microalgal cultures to perform biological
tertiary treatment of secondary effluents. Given the limited number of species
still available for commercial exploitation, it is imperative to isolate and
cultivate those photosynthetic organisms with high growth rate and biomass
accumulation, which could play the dual role of cleaning the wastewater and
also providing useful biomass. This has been the objective of this study ie.
0 To develop pure cultures of local isolates of Cyanobacteria for
extraction of biochemicals of commercial value
0 To couple biomass production with effluent treatment
Description:
School of Environmental Studies, Cochin University of Science And Technology
Anas, A; Bright Singh, I S(Centre for Fish Disease Diagnosis and Management, School of Environmental Studies, 2005)
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Abstract:
Present work is aimed at development of an appropriate microbial technology for protection of larvae of macrobrachium rosenbergii from disease and to increase survival rate in hatcheries. Application of immunostimulants to activate the immune system of cultured animals against pathogen is the widely accepted alternative to antibiotics in aquaculture. The most important immunostimulant is glucan. Therefore a research programme entitled as extraction of glucan from Acremonium diospyri and its application in macrobrachium rosenbergii larval rearing system along with bacterians as microspheres. The main objectives of the study are development of aquaculture grade glucan from acremonium diospyri, microencapsulated drug delivery system for the larvae of M. rosenbergii and microencapsulated glucan with bacterian preparation for the enhanced production of M. rosenbergii in larval rearing system. Based on the results of field trials microencapsulated glucan with bacterin preparation, it is concluded that the microencapsulated preparation at a concentration of 25g per million larvae once in seven days will enhance the production and quality seed of M. rosenbergii.
Joy, C M; Dr.Balakrishnan, K P(Cochin University of Science and Technology, April , 1989)
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Abstract:
The thesis entitled Growth Response of Phytoplankton Exposed to Industrial Effluents in River Periyar. The present investigation has been conducted in two phases: field observation and algal assays. The monthly distribution of hydrographic features is represented graphically. The sampling year has been divided into three seasons: monsoon (June to September), postmonsoon (October to January) and premonsoon (February to May). The data were analysed using Student's t-test to find whether there was any significant difference between surface and bottom samples. The spatial variation of the variables was assessed by Page's L (trend) test (Ray Meddis, 1975). The standard procedure for algal toxicity test (Ward and Parrish, 1982) was followed throughout the study. Statistical analysis (Page's L (trend) test) showed that there was no significant difference in Secchi disc transparency between the stations. The field observations as well as the laboratory assays confirm that the rate of discharge in river Periyar during premonsoon is insufficient to effect dilution of wastewater received in the industrial zone.
Description:
School of Environmental Studies,
Cochin University of Science
and Technology.
Geetha, T; Dr. Balagopalan, M(Cochin University of Science and Technology, January 8, 2008)
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Abstract:
Impact of teak and eucalypt monoculture on soils in the highlands of kerala .The thesis is arranged under nine chapters. The first chapter introduces the topic, reviews the literature pertaining to the study and presents the aims and objectives of the study. The second chapter briefly describes the study location. experimental design and sampling methodology. The third chapter deals with physical properties of plantation soils. The fourth and fifth chapters cover the chemical properties and macro- and micro nutrient status in plantation soils. The organic matter fractions in plantation soils are described in sixth chapter. First part of the seventh chapter presents the results of factor analysis and the second part deals with fertility index of plantations. All these chapters are self-contained with separate introduction, materials and methods and results and discussions. A general discussion of the results is included in the eighth chapter. The ninth chapter includes conclusions and summary A study that traces the variation in physical and chemical properties and nutrient status of teak soils with age of plantations, till the end of a rotation period is thus highly pertinent. Such a study, with an adjacent natural forest as a reference stand will not only generate information that will help us to understand the pattern of variation in soil properties, but will also aid us in formulating better management strategies. The data generated by such a study will be more useful if accompanied by information on soil changes following a short rotation plantation crop. As Eucalypt, a short rotation crop is the second major
plantation crop in Kerala, it was chosen for the study.
Description:
Soil Science discipline, SNPFM Division
Kerala Forest Research Institute
Peechi
Bijumon, K B; Dr.Ouseph, P P(Cochin University Of Science And Technology, July 4, 2005)
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Abstract:
Assessment water’ quality nowa-days in global scenario implies the need for a
reference point against which monitoring can be measured and weighed. Aquatic
ecosystenis as part of the natural environment are balanced both witliin tlicinselves and
with other environmental compartments and this equilibrium is subject to natural
variations and evolutions as well as variations caused by human intervention. The
present assessnient is to identify. and possibly quantify, anthropogenic influences over
time against a “natural baseline situation. Water pollution problems have only recently
been taken seriously in retrospect. Once damage occurred, it becomes immeasurable,
and control action cannot be initiated
Description:
School of Environmental Studies,Cochin University of Science &
Technology