Cage Farming of Cobia Rachycentron canadum

Cobia has gained popularity as a good candidate for mariculture due to its rapid growth and white meat of versatile use. It is considered as one of the most promising candidates for warm-water marine fish aquaculture in the world. Being the only member of the family Rachycentridae, it is found in the warm, temperate to tropical waters of the West and East Atlantic, throughout the Caribbean and in the Indo-Pacific off India, Australia and Japan. To date, research and development of cobia aquaculture has been initiated in over 23 countries and territories

प्रजाति विविधीकरण – तटीय जलकृषि में स्थिरता सुनिश्चित करने का उपाय

कृपया पूरा लेखा पढ

Transmission Line Fault Monitoring and Identification System by Using Internet of Things

The fault location detection has been a goal of power system engineers, since the creation of distribution and transmission systems. Quick fault detection can help protect the equipment by allowing the disconnection of faulted lines before any significant damage of the equipment. The accurate fault location can help utility personnel remove persistent of the faults and locate the areas where the faults regularly occur, thus reducing the occurrence of fault and minimize the time of power outages. As a result, while the fault location detection schemes have been developed in the past, a variety of algorithms continue to be developed to perform this task more accurately and more effectively. The detection and location of faults on power transmission lines is essential to the protection and maintenance of a power system. Most methods of fault detection and location relate to the measurements of electrical quantities provided by current and voltage transformers. These transformers can be expensive and require physical contact with the monitored high voltage equipment

Necropsy findings and observations on marine mammals stranded in Gulf of Mannar coast

A dead female dolphin was washed ashore on 19 April 2016 at Singhivalaikuchu, near Vedhalai, Ramanathapuram district, Tamil Nadu along the coast of Gulf of Mannar (N.09.260700; E.79.084858). Based on morphological features and teeth pattern, the specimen was identified as Indo-pacific bottlenose dolphin, Tursiops aduncus. A total of 26 morphometric parameters were recorded

Farming of Silver Pompano Trachinotus blochii in coastal aquaculture ponds

The Central Marine Fisheries Research Institute has initiated aquaculture research on pompano from 2008 and the first successful broodstock development, induced breeding and larval production was achieved in 2011. Following the successful seed production of silver pompano, demonstration of farming in brackishwater ponds was initiated by the CMFRI to popularize among the farmers about its suitability for aquaculture. The first farming demonstration from the hatchery produced seed was carried out in a coastal aquaculture pond at Anthervedi Village, East Godavari District, Andhra Pradesh. It has been proven that silver pompano can be cultured in the brackishwater shrimp culture ponds as an alternative species with high survival rate, appreciable FCR and meat quality. These fishes have attained an average weight of 450 grams in 240 days (8 months). Based on the experience gained on the brackishwater farming of silver pompano, the practices to be adopted for pompano farming are narrated

समुद्रि अलंकारी मछलियों का टिकाऊ व्यवसाय का विकास

कृपया पूरा लेखा पढ

Reversible melting and equilibrium phase formation of (Bi,Pb)2Sr2Ca2Cu3O10+d

The decomposition and the reformation of the (Bi,Pb)2Sr2Ca2Cu3O10+d (?Bi,Pb(2223)?) phase have been investigated in-situ by means of High-Temperature Neutron Diffraction, both in sintered bulk samples and in Ag-sheathed monofilamentary tapes. Several decomposition experiments were performed at various temperatures and under various annealing atmospheres, under flowing gas as well as in sealed tubes, in order to study the appropriate conditions for Bi,Pb(2223) formation from the melt. The Bi,Pb(2223) phase was found to melt incongruently into (Ca,Sr)2CuO3, (Sr,Ca)14Cu24O41 and a Pb,Bi-rich liquid phase. Phase reformation after melting was successfully obtained both in bulk samples and Ag-sheathed tapes. The possibility of crystallising the Bi,Pb(2223) phase from the melt was found to be extremely sensitive to the temperature and strongly dependent on the Pb losses. The study of the mass losses due to Pb evaporation was complemented by thermogravimetric analysis which proved that Pb losses are responsible for moving away from equilibrium and therefore hinder the reformation of the Bi,Pb(2223) phase from the melt. Thanks to the full pattern profile refinement, a quantitative phase analysis was carried out as a function of time and temperature and the role of the secondary phases was investigated. Lattice distortions and/or transitions were found to occur at high temperature in Bi,Pb(2223), Bi,Pb(2212), (Ca,Sr)2CuO3 and (Sr,Ca)14Cu24O41, due to cation diffusion and stoichiometry changes. The results indicate that it is possible to form the Bi,Pb(2223) phase from a liquid close to equilibrium conditions, like Bi(2212) and Bi(2201), and open new unexplored perspectives for high-quality Ag-sheathed Bi,Pb(2223) tape processing.Comment: 45 pages (including references,figures and captions), 13 figures Submitted to Supercond. Sci. Techno

Fishery resources of spiny lobsters in the Andaman Island, India

The Andaman and Nicobar (A&N) Islands is the largest archipelago in the Bay of Bengal. In spite of availability of diverse lobster resources, there is no organised lobster fishing in the Islands. The main objective of the study was to collect baseline data on the lobster resources of the Andaman Island. Periodic field surveys were carried out at 33 landing centres in the Andaman and data were collected by direct observation and questionnaires. Mechanised and non-mechanised fishing crafts are engaged in lobster fishing in the Island. Lobsters are manually caught by spears, gillnet, shoreseine and handpicking. Six commercially important species of spiny lobsters, Panulirus penicillatus, P. versicolor, P. homarus, P. ornatus, P. polyphagus and P. longipes are present in the island. Among them, P. penicillatus dominated the landings throughout the study period (1999-2000), with maximum catch in January, followed by P. versicolor. The total lobster landings in Andaman during the study period were estimated as 3.16 tonnes with maximum landings in south Andaman (Port Blair)

सिल्वर पोम्पानो (ट्रकिनोटस ब्लोची) - तडीय तालाब में पालन के लिए एक संभावित प्रजाति

Silver pompano Trachinotus blochii a potential species for coastal pond farmin