Conference papers (Engg)

Permanent URI for this collection

http://localhost:4000/handle/123456789/251

Browse

Now showing 1 - 20 of 28

Advances in elelctronics and measurments in fishery technological investigstions
(CUSAT, Cochin (India), 1995) Sivadas, T.K.
Fishery technology is a multidisciplinary subject warranting integrated approach for its development coordinating a variety of biological and technological disciplines. The complex and hostile nature of the environment where the fishing technological investigations are carried out further necessitates the evaluation of the operational features of the dynamic systems as well as estimation of the physical, chemical, biological and mateorological values of the sea related to fishery resources. The recent developments in microelectronics and space exploration have made revolutionary changes in acoustic fish detection methods, precise navigation, safety in the sea and satellite remote sensing techniques for fishery forecasting. The efforts made in CIFT show the scope and utility of a series of electronic instruments for monitoring the performance of fishing gears, fishing crafts, water quality and the marine environmental parameters. The instruments developed in CIFT using fully indigenous technology are aimed at to make scientific studies on the multidiscplinary nature of the marine environment in relation to the fishing efforts so as to achieve sustainable exploitation of the resources and self reliance in the technology. The paper gives an account of the recent advancements in electronics along with the specific contributions made indigenously.
Calibrations of hydro-acoustic instruments onboard FORV Sagar Sampada
(FORV Sagar Sampada, (Department of Ocean Development, New Delhi), 1996) Natarajan, S.; Kasim, M.; Gopakumar, G.; Ravindranathan, V.; Ramakrishnan, A.
Calibration is carried out to keep up the precition of the instrument by determinig their caliber. Calibration of hydro-acoustic equipment onboard FORV Sagar Sampada was carried out periodically and the performence record weree maintained. Deviation and the defficiencies were noted down for applying correction while interpriting the output of the instruments.
Conservation of energy in fish drying
(Society of Fisheries Technologists (India), 2010) Joshi, P.N.
The total fish production in India is 6.4 million t of which about 3,4 million t is from inland and 3.0 million t from marine sources (Ayyappan and Diwan, 2007). Fish are an extremely perishable foodstuff. Spoilage occurs as the result of the action of enzymes (autolysis) and bacteria present in the fish, and also chemical oxidation of the fat which causes rancidity.
A cost effective method for medium size vessels for deep sea fishing
(Society of Fisheries Technologists (India), 1998) Nasser, M.; Pillai, S.A.
Capability of medium size vessels, presently operating not far from the shore, to be employed these vesels for deepsea fishing by erecting an operating base at sea is discussed. The concept is introduced and an outline of the engineering aspects is discussed.
Design and fabrication of a tilting kettle for fish processing industries
(Society of Fisheries Technologists (India), 1982) Joshi, P.N.
An electrically heated stainless steel jacketed kettle of 80 litter capacity working at a steem pressure of 1.06 kg f cm -2 has been designed and fabricated for cooking fish and prawn in the fish processing industry. The equipment which is provided with tilting arrangement and operetional controls aloows cooking at a constant temperature under highgienic conditons . The details of the disign, construction and operation are discribed the cost of equipment is about Rs.8000. The economics of operation are also presented.
Design of semi - commercial plant for the production of shark liver oil
(Society of Fisheries Technologists (India), 1982) Chakraborty, P.K.
The design of a 1000 kg day-1 capacity shark liver oil plant is described. Process including refining operations, complete specifications and functions of individual equipment are described. A process flow sheet and equipment layout are also indicated.
Development of a fish pump
(Society of Fisheries Technologists (India), 1982) Namboodiri, K.S.
Pump fishing techniques can be applied to all shoaling fish or in a fish shoal which is created by some attraction method. The normal centrifugalpumps and reciprocating pumps have moving parts inside the pump and which works on the principle of pressure difference created by compressed air-water mixture. The accessories required for installation on boat are also described.
Development of an aquatic weed harvester
(Society of Fisheries Technologists (India), 1982) Namboodiri, K.S.; Velu, M.
A machine for removing floating and submerged vegetation from large water spread is descrided. The harvester consists of a moving rake installed on a floating platform. The platform is constructed by bloting together five separate steel tanks.
Electronic instruments for application in fish processing
(Society of Fisheries Technologists (India), 1998) Vijayabharathy, K.; Sivadasan, T.K.
Working principles and salient features of sensors and electronic instruments, Water activity meter and Gel strenght tester, developed in CIFT for applications in fish processing are described. A brief description of other related instruments with particular reference to the improvements and additional features incorporated is also presented.
Electronic instruments for investigations in riverine and reservoir fisheries
(Society of Fisheries Technologists (India), 2001) Ramakrishnan, K.
Electronic instruments play a vital role in collection of data for investigations in riverine and reservoir fisheries . The data collected will help to make realistic estimation of the resources and better understanding of related problems . The paper discusses the measurements made with electronic instruments developed by the Central Institute of Fisheries Technology, viz ., water current meter, depth meter, speed log . sedimentation monitor, turbidity meter and imported instruments such as echo sounder and global positioning system in rivers and reservoirs . Such data can be incorporated in geographical information system for better planning, management and harvesting of resources .
Electronic instruments for testing and standardisation of fishing crafts
(Society of Fisheries Technologists (India), 1982) Sivadas, T.K.; Ramakrishnan, K.; Vijayabharathi, K.
Electronic instruments have been developed indigenously for monitoring the performance of fishing craft to estimate their suitability to different types of gear and load conditions. Three types of instruments are reported namely, bollard pull monitor, speed and distance log and warp load meters. The bollard pull monitor monitors the bollard pull of boats during the bollard pull tests which is the standard test for assessing the capacity of the engine at different r.p.m. The instrument senses bollard pull by means of its load cell and displays the bollard pull in tonnes in a meter kept at a convenient place connected by a two-core cable. A potentiometric recorder to which the signals are fed from the instrument, not only makes permanent records of the bollard pull in graphical from, but also reveals the nature of the power developed clearly. The speed and distance log indicates the speed of motion of the vessel and the total distance travelled. This instrument is needed for assessing the dynamic performanceof the craft. The data from the meter can be fed to recorder for permanent records and precise analysis. Two types of warpload meters are reported namely, portablewarp load meter for use in smaller boats up to 1000 kg and ship-installed warp load meter for permanent installation in large vessels for measurements upto 5 tonnes. The former can be used in all types of boats with in the measurement range much easily without disturbing the routine fishing operations. The design and facilities for feeding the signals to recorders for precise data analysis. All the instruments are fully indigenous and have been relesed for commercialisation. Some typeical data obtained from theinstruments during the static and dynamic tests are also presented.
Electronic wire telemetering instruments for the engineering studies of otter trawls
(Society of Fisheries Technologists (India), 1982) Sivadas, T.K.; Vijayabharathi, K.; Ramakrishnan, K.
The paper reports with telemetering instruments for the measurements of depth of operation, angele of attack of otter boards, tilt of otter boards, under water tension for the measurements of the resistance to motion of the different part of the net during operation, mesh size variation and water flow around and inside the net.
A fryer for battered and breaded fishery products
(Society of Fisheries Technologists (India), 1998) Joshi, P.N.
A frying battered and breaded seafood products was developed. It consist of a stainless steel vessel designed to minimise the quantity of oil and obtain maximum heating efficiency and is provided with an internal heating system with temperature control. The equipment can be used to deep fry about 200 cutlets and similar products per hour. The fryer could be used advantageously by small scale caterers and fast food restaurant operators.
Fuel efficient hearth for boiling clams
(Society of Fisheries Technologists (India), 1987) Pillai, S.A.; Balachandran, K.K.
a simple and fuel efficient hearth was designed for boiling clams for recovery of meat. Experiments were conducted to study the efficiency of hearth using different fuels and compared with the conventional hearths and fuel used. The new hearth prevents much of the radiation loss of heat taking place in the conventional hearths which have an open area of about 70% on the circumference. The new hearth also allows for controlled burning of fuel by controlled admission of air using a hand blower. Any type of solid fuel can be used. Paddy husk has been found to be the most efficient and cheapest fuel for use in the new hearth.
Fuel saving in fishing by improving the propeller design
(society of Fisheries Technologists (India), 1998) Nasar, M.
Increase in the number of motorised fishing vessels coupled with ever increasing fuel cost has resulted in a decrease in earning per unit of fishing fleet. fuel consumption of medium size trawlers operating from Cochin and Mangalore and the outcome of measures adopted to reduce it are analysed. By redesigning the propellers of these vessels an average fuel saving of 205 can be achieved. A general account of the principles for redesigning is given.
Hydro-meteorological data acquisition system
(Society of Fisheries Technologists (India), 2001) Vijayabharathi, K.; Ramakrishnan, K.
Technical features of a composite equipment, developed at Central Institute of Fisheries Technology (Cochin), for the measurement of 9 parameters related to air, water, soil and environment, are described in this paper.. The system consists of 16 sensors installed at different locations within a limited area to sense the respective parameter and electronic console unit for display and memory module for storage of data. PC based post-processing and analysis of the stored data is possible.
An indigenous electronic instrument for measuring water activity in dry fish products
(Society of Fisheries Technologists (India), 2001) Vijayabharathi, K.
An electronic instrument was developed in Central Institute of Fisheries Technology using indigenous technology for measuring water activity (a w.) in dry fish samples . The measurement of a,, is important in many phases of food processing . It influences flavour, microbial activity, moisture level . hydration, texture and nutritive value of foods . The salient features of the instrument are quick and accurate measurement, easy operation, digital display of data . low power requirement and portability. Hygroscopic materials for measurement of Equilibrium Relative Humidity (ERH) and semiconductor diode for measurement of temperature of the atmosphere above the food sample were incorporated in the sensor part .
Indigenous electronic instruments for assessing quality of fishery products
(Society of Fisheries Technologists (India), 2002) Vijayabharathi, K.; Ramakrishnan, K.
Electronic Instruments play a vital role in evaluating the quality of fishery producta and thereby ensuring food safety. Instruments are used for quantitative evaluation of physical parameters of fishery products. A brief account of indigenous electronic instruments developed by Central Institute of Fisheries Technology (Cochin) for measuring important parameters such as temperature, a w gel strength, brine concentration, and those related to dehydration of fish using solar energy are presented in this paper.
Indigenous instrumentation for collection of field data
(Society of Fisheries Technologists (India), 1998) Sivadas, T.K.; Ramakrishnan, K.; Vijayabharathi, K.
Technology developed in Central Institute of Fisheries Technology to meet the instrumentation needs in fisheries and agriculture are highlighted. Standardisation of sensors with associated electronics in modular approach has resulted in high flexibility in the selection of different combination for specific aplications. Controls and systems have been developed for operation in single or multichannel format with automatic or manual mode using memory or computer.
Instrumentation for behaviour studies of marine animals
(Society of Fisheries Technologists (India), 1998) Sivadas, T.K.; Vijayabharathi, K.; Ramakrishnan, K.
Principles, salient features and applications of electronic instruments developed for behaviour studies of sedentary animals and fish in the laboratory under simulated conditions are discussed. Fish activity recorder senses the vibrations produced in water as a measure of activity of fishes kept in an experimental tank. The signals picked by a sensor kept in water are processed to indicate both qualitative and quantitative information regarding the activity. Cirri beatings are sensed by a sensor whose antenna is made to float on water above the cirri of the animal. The sensor kept on the upper shell of the animal picks up the oyster shell movements. The basic information on the responses of the animals to simulated conditions can be extrapolated to field conditions along with environmenttal data gathered by other means for better fishry forecasting and ecological studies.

Browse

Browsing Conference papers (Engg) by Title

Results Per Page

Sort Options