A new method to measure the chiral condensate in lattice QCD using Wilson fermions

Parity and flavor symmetry is not broken in QCD. Using this fact, we propose a new method to measure the chiral condensate in lattice QCD using Wilson fermions with an operator that breaks parity and flavor in addition to the chiral symmetry.Comment: 9 pages, LaTeX, no figure

Artemia culture and Cyst production

As environmental factors play an important role in the mode of reproduction of brine shrimp, an understanding of the same is necessary to achieve optimum production of biomass and cysts under natural as well as controlled environmental conditions

Observations on experimental artificial reef constructed at Tuticorin

An experimental artificial reef was constructed in the break-water of Tuticopn Harbour during July-August, 1989 at a depth of 6 m using discarded lorry tyres. A total number of 23 modules, consisting of 69 tyres and fabricated in lhree different designs, were used for the reef construction. The reef occupied a bottom area of approximately SO sq.m. with a height of 0.8 to 1 m. Within a period of one month from the time of construction, autotrophic community dominated by red algae and heterotrophic community dominated by cirri pedes, in addition to colonization by various groups of invertebrate organisms, were observed on the reef structure. The inhabitation by fish was observed during the third month. The behaviour of fish and shellfish" in the artificial reef was observed by SCUBA diving

जलकृषि जैवप्रौद्योगिकी में ब्रैन श्रिंप संपदाओं का उपयोग

कृपया पूरा लेखा पढ

Creation of artificial habitat for spiny lobsters in the sea off Vellapatti, Gulf of Mannar

An experimental artificial habitat for spiny lobsters was created in the sea off Vellapatti, a fishing village near Tuticorin in the Gulf of Mannar during June 1997. A total of 49 modules fabricated out of 147 stoneware pipes were used to create the artificial habitat which covered a floor area of approximately 1000 sq. m. Inhabitation of lobsters in the artificial habitat was recordedfor the first time three months after the installation of the modules. Both Panulirus ornatus and P.homarus were encountered in bottom set gill net catches operated in the vicinity of the artificial habitat

Artificial reef and its role in marine fisheries development

Floating bamboo bundles and piles of stones kept on the sea bottom have long been used by traditional fishermen as fish gathering devices in various parts of the world. These objects provide living space, shelter for protection from the predators thus functioning as (i) a habitat for organisms. The attached algae and other sessile organisms serve as food especially for young ones. Thus the area where such objects are placed function as (ii) a feeding ground. These objects also act as a suitable substratum for attachment of eggs in some cases thus functioning as (iii) a spawning ground. Based on these principles artificial reefs are constructed in different parts of the world either to create a new fishing ground or to improve the production potential of the existing grounds

On the deep sea prawn resources off Tuticorin

The prawn resources along Tuticorin coast are exploited mainly by three types of gears viz. prawn gill net and thallumadi in the artisanal sector and trawl net in the mechanised sector

On the fishery of the spiny lobster off Tharuvaikulam, Gulf of Mannar

Tharuvaikulam is a fishing village near Tuticorin on the southeast coast of Tamil Nadu. Fishing by bottom-set gill nets is carried out off Tharuvaikulam almost round the year. Normally, the swimming crab Portunus pelagicus dominates the catches. But at times lobsters are also encountered in the catches in good numbers. Two species of lobsters namely, Panidirus omatus and P. homarus constitute the lobster fishery off Tharuvaikulam coast

The spiny lobster resources in the trawling grounds off Tuticorin

There are six species of spiny lobsters ofcommercial importance in Indian waters, out of which only three species namely Panulirus polyphagus, P.omatus and P. homarus contribute significantly to the commercial fishery along certain parts of the Indian coasts