92 research outputs found

    Exhaust emission analysis on engine using biodiesel produced from broiler slaughter waste

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    In this work, exhaust gas emission analysis was conducted for standard diesel, pure biodiesel, diesel (90%)+biodiesel (10%)-B10, diesel(80%)+biodiesel(20%)-B20, diesel(70%)+biodiesel(30%)-B30. Here the biodiesel used is produced from the broiler chicken waste. ┬аExperiments are carried out using single-cylinder, 4-stroke, direct injected, water-cooled diesel engine at five loads between no load and a full load of 1500 rpm. Emission characteristics of the engine fueled with biodiesel and its blends with diesel were compared to standard diesel fuel as the baseline fuel. Overall, biodiesel blends, as compared to diesel, reduce NO, CO, CO2 and HC emissions, at full loads. It is also shown that biodiesel and its ┬аblends having less EGT than diesel fuels

    Bivalve resources and its exploitation in Malabar

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    The Malabar region of Kerala (Kozhikode, Kannur, Mahe, Kasargod) has significant bivalve resources contributing to subsistence fisheries of the local population. Clams and oysters form the major resources in the estuaries and backwaters. The clams, Meretrix casta, Meretrix meretrix, Villorita cyprinoides, Paphia malabarica and the edible oyster, Crassostrea madrasensis form the major exploited bivalve resources of commercial significance

    Biology of Mactra violacea (Gmelin 1791) from Kerala, south-west coast of India

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    The surf clam Mactra violacea (commonly known as violet trough shell), is distributed all along the sandy beaches of north Kerala. It occurs in the surf zone, upto 75-100 m depth. It is a large clam (upto 80 mm) with high meat content and nutritive value which is collected and consumed by the local people. The biology of the surf clam was studied to understand its growth, edibility and potential for mariculture

    Site selection for Mussel Culture

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    In India, most of the bivalves produced are fished from the natural stocks. At present green mussels are cultivated mainly in the states of Kerala and Karnataka., Production o f bivalves by mariciilture in India is very little compared to the rest o f the world. The major source for collection o f the seeds of the bivalves is through wild collection or through laying of clutch material as in edible oysters

    Bivalve resources of Moorad Estuary, north Kerala

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    A bivalve resource survey of Moorad estuary in Badagara District of north Kerala was carried out during February 2004 to assess the bivalve species, their distribution and potential stock. Sampling sites were fixed within five main zones of the Moorad estuary based on the clam fishery activities and local enquiries. The bivalve distribution in a unit area was taken by demarking the area of clam bed with a quadrant. Observations on the area of clam bed, water clarity, depth and temperature were recorded at each site. Surface and bottom water samples were collected and hydrographic parameters like salinity, temperature, pH and dissolved oxygen content, productivity, nitrate, phosphate and silicate were recorded. Sediment samples were collected to analyse the grain size and organic content of the clam beds. All samples were analysed within 24 h except sediment samples. Average density of bivalve per square metre area was analysed and the potential stock was estimated for each bivalve species in the estuary

    Mussel culture in backwaters of Kasaragod district, Kerala

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    Mussel culture is increasingly getting Popular in Padanna and Cheruvattur Panchayats In Hosdurg Taluk of Kasaragod district in Kerala, By virtue of the popularisation efforts made by the CMFR Institute. Initially this low cost technology Of farming was transferred to five groups with 15 To 21 farmers at Cheruvattur and Vallyaparamba, Mostly women groups

    Fishery and biology of Meretrix casta (Chemnitz) in the Moorad estuary, Kerala

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    Meretrix casta forms an important fishery in the Moorad estuary. The average annual landing for the period 2000-2004 was 426t, the average catch per effort was 573 kg and total effort was 3182. Clams ranging from 28 to 32 mm size contributed to the fishery. M casta is a continuous breeder with two peaks in March-April and August-September. The precentage edibility ranged between 8 and 16. The standing stock biomass in the Moorad estuary was estimated at 2073 t with an average density of 1096 numbers per sq. m. The present status and management options for this important fishery are discussed
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