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
Abdul Khader, K M; Dr.Mohandas, A(Cochin University of Science & Technology, 1999)
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Abstract:
Instead of developing easily degradable, and low-priced insecticides, we are
going after highly sophisticated chemicals. Here, an attempt is being made to develop
safer formulations of insecticides of botanical origin.
Different parts of the plants were chosen based on their use in countryside and
villages The dried plant materials were extracted with petroleum ether, and were
applied on Tribolium castaneum. The results were statistically analysed.
The active principles from Croton tigilium and Leea sambucina, the most
potential plants, were isolated using Column Chromatography, TLC, and Hydrolysis.
The isolated principles were analysed spectroscopically ( UV-Vis., IR, NMR,
and MS ) to identify their chemical nature. The active principles from Leea and
Croton were identified as a cholisterate derivative and a phorbol derivative
respectively.
In order to ascertain the environmental combatibility of the principles,
degradation by soil bacteria was studied.
The isolated principles were made into three type of formulations using
stabilizers .The formulations were applied on Snake gourd semilooper, Pulse beetle,
and mosquito larvae. Also the biocidal activity of the formulations was studied.
Both Leea derivative and Croton derivative could be formulated effectively
and were effective against a variety of pests. They are eco-friendly, as there is no
artificial chemicals involved.
Description:
School of Environmental Studies,
Cochin University of Science And Technology
Aneesh Kumar, K.V.; Dr.Meenakumari,B; Dr Remesan, M. P(Cochin University of Science And Technology, November , 2013)
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Abstract:
The main objectives of the present study have been
studies on the operational performance of tuna longline in
Lakshadweep Sea
studies on the efficiency of hooks in the longline operation
studies on the efficiency of baits in the longline operation
studies on bycatch in longline operation
studies on predation on the longline catch and the hook loss
encountered during the fishing operation
Description:
Fishing Technology Division
Central Institute of Fisheries Technology
CIFT Junction, P. O. Matsyapuri
(Indian Council of Agricultural Research)
Sunitha, Poulose; Dr.Bright Singh, I S(Cochin University of Science And Technology, February , 2013)
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Abstract:
Marine yeast have been regarded as safe and showing a beneficial
impact on biotechnological process. It provides better nutritional and
dietary values indicating their potential application as feed supplements in
aquaculture. Brown et al. (1996) evaluated all the marine yeasts
characterised with high protein content, carbohydrate, good amino acid
composition and high levels of saturated fats. However, there is paucity of
information on marine yeasts as feed supplements and no feed formulation
has been found either in literature or in market supplemented with them.
This statement supported by Zhenming et al. (2006) reported still a lack of
feed composed of single cell protein (SCP) from marine yeasts with high
content of protein and other nutrients. Recent research has shown that
marine yeasts also have highly potential uses in food, feed, medical and
biofuel industries as well as marine biotechnology (Chi et al., 2009; 2010).
Sajeevan et al. (2006; 2009a) and Sarlin and Philip (2011) demonstrates
that the marine yeasts Candida sake served as a high quality, inexpensive
nutrient source and it had proven immunostimulatory properties for
cultured shrimps. This strain has been made part of the culture collection of
National Centre for Aquatic Animal Health, Cochin University of Science
and Technology as Candida MCCF 101. Over the years marine yeasts have
been gaining increased attention in animal feed industry due to their
nutritional value and immune boosting property.Therefore, the present study was undertaken, and focused on the
nutritional quality, optimization of large scale production and evaluation of
its protective effect on Koi carp from Aeromonas infection
Description:
National Centre for Aquatic Animal Health
School of Environmental Studies
Cochin University of Science and Technology