Import substitution of combination wire rope. Part 2. Production and standardisation of 17 mm dia combination wire rope.

The prototype combination wire rope (Cift-CWR 1) developed for deep sea trawling was further studied for improvement, optimisation of efficiency and standardization. A series of improved prototype combination wire ropes (Cift-CWR 2 to 6) were twisted and evaluated their mechanical properties and reported in this paper with recommendations for a standard 17mm dia combination wire rope of 6S (7C+8+1 Scr) + 6 Crs(6+1+1 Crc) construction

Application of remote sensing in fisheries. In: Winter School on Impact of Climate Change on Indian Marine Fisheries held at CMFRI, Cochin 18.1.2008 to 7.2.2008

Satellite oceanic remote sensing is now playing a very important role in India for fishery forecasting, research and management by providing synoptic oceanic measurements. These can be used for evaluating environmental effects, which ultimately affects the abundance and availability of fish populations. Indian seas, which have a coastline of 8118 km, an EEZ area of 2.02 million sq. km and a shelf area of 0.53 million sq. km (Anon, 2002), have multi species composition. It is a well known fact that changes in ocean conditions greatly influence the natural fluctuations of fish stocks. Hence the information on variations in ocean conditions is necessary to understand the influence they cause on fish stocks and their distribution. This knowledge will immensely help in formulating the best fishery management strategies and developing efficient harvesting methods for fishery resources

Import substitution of combination wire rope. Part 1. Design, production and evaluation of a prototype combination wire rope

Model combination wire ropes with different covering materials were prepared and worked out specification for the prototype. A table model hand operated wire rope twisting machine was also developed for this. Prototype combination wire rope was twisted in collaboration with M/s South India Wire Ropes Ltd., Alwaye. Specification details, properties and field performance of the prototype studied are reported

Spiny lobsters and their fishing techniques

Scores of publications on spiny lobsters and their fishing techniques are available from various parts of the world. A variety of fishing gears which vary in design and operation are employed for exploiting lobsters. A review of the work carried out on spiny lobsters with special reference to their distribution, fishing gear, fishing methods, baits and crafts in India, Sri Lanka, United States, Australia, South Africa, United Kingdom, Ireland and Portugal based on selected literature are considered and discussed

Tensile strength properties of polyethylene netting twines under exposure to out-door and artificial UV radiation

Photodegradation of three types of polyethylene twines namely, polyethylene fibrillated tape twine, polyethylene flat tape twine and polyethylene monofilament twines were studied by exposing them to sunlight and artificial UV radiation. The percentage residual strength varied in the samples, the monofilament with the highest residual strength followed by fibrillated tape twine and flat tape twine. A plot of the difference between the breaking strengths of the fibrillated tape twine and the mono filament twines against any given period of exposure exhibited a linear relationshi

The hydrogen peroxide-sensitive proteome of the chloroplast in vitro and in vivo

Muthuramalingam M, Matros A, Scheibe R, Mock H-P, Dietz K-J. The hydrogen peroxide-sensitive proteome of the chloroplast in vitro and in vivo. Frontiers in Plant Science. 2013;4:54-1-54-14.Hydrogen peroxide (H2O2) evolves during cellular metabolism and accumulates under various stresses causing serious redox imbalances. Many proteomics studies aiming to identify proteins sensitive to H2O2 used concentrations that were above the physiological range. Here the chloroplast proteins were subjected to partial oxidation by exogenous addition of H2O2 equivalent to 10% of available protein thiols which allowed for the identification of the primary targets of oxidation. The chosen redox proteomic approach employed differential labeling of non-oxidized and oxidized thiols using sequential alkylation with N-ethylmaleimide and biotin maleimide. The in vitro identified proteins are involved in carbohydrate metabolism, photosynthesis, redox homeostasis, and nitrogen assimilation. By using methyl viologen that induces oxidative stress in vivo, mostly the same primary targets of oxidation were identified and several oxidation sites were annotated. Ribulose-1,5-bisphosphate (RubisCO) was a primary oxidation target. Due to its high abundance, RubisCO is suggested to act as a chloroplast redox buffer to maintain a suitable redox state, even in the presence of increased reactive oxygen species release. 2-cysteine peroxiredoxins (2-Cys Prx) undergo redox-dependent modifications and play important roles in antioxidant defense and signaling. The identification of 2-Cys Prx was expected based on its high affinity to H2O2 and is considered as a proof of concept for the approach. Targets of Trx, such as phosphoribulokinase, glyceraldehyde-3-phosphate dehydrogenase, transketolase, and sedoheptulose-1,7-bisphosphatase have at least one regulatory disulfide bridge which supports the conclusion that the identified proteins undergo reversible thiol oxidation. In conclusion, the presented approach enabled the identification of early targets of H2O2 oxidation within the cellular proteome under physiological experimental conditions

Development of lobster traps: preliminary experiments with three new designs of rectangular, Australian pot and ink-well traps

Result of experimental lobster fishing with three new designs, namely rectangular, Australian pot and ink-well traps at Muttam, Kadiapatnam, Colachal, Enayam and Vizhinjam, south-west coast of India during 1979-80 are reported. Preliminary studies show that Australian pot and rectangular traps as more efficient to the ink-well type

Development of an efficient trap for lobster fishing

A modified trap was developed for fishing spiny lobsters. Experimental fishing was conducted using this trap along with traditional trap (as control) to assess the comparative efficiency. Design details and comparative efficiency of the modified trap is reported in this paper. From the analysis of variance, the difference in average catches between the modified trap and the control is found to be highly significant establishing the high efficiency of new trap

Compatibility of biocontrol agents and N fixing organisms with post emergence pre-mix herbicide-bispyribac sodium + metamifop 14 % SE

he experiments were conducted in vitro in the Agricultural Microbiology laboratory at College of Agricul-ture, Vellayani, Thiruvananthapuram, Kerala, India to evaluate the compatibility of biocontrol agents Pseudomonas fluorescens and Tricoderma viride and N fixing organisms Azospirillum lipoferum and Azotobacter chroococcum to bispyribac sodium + metamifop 14 % SE, a new broad spectrum post emergence pre-mix herbicide mixture used for weed control in rice. The experiments were conducted in completely randomized block design with seven different concentrations of herbicide viz., 100, 120, 140, 160, 180, 200 and 220 ?L L-1 corresponding to field doses of 50, 60, 70, 80 90, 100 and 110 g ha-1 and a control (0 ?L L-1). All the tested concentrations of the herbicide mixture were highly compatible with P. fluorescens, A. lipoferum and A. chroococcum. The radial colony diameter of T. viride was significantly influenced by different concentrations of the herbicide. The field dose of bisspyribac sodium + met-amifop up to 90 g ha-1 (180 ?L L-1) is harmless to T. viride, since it recorded a growth inhibition of only 22.96 per cent but higher doses (100 and 110 g ha-1) which recorded a growth inhibition of 31.48 and 37.04 per cent respectively were slightly harmful to the antagonistic fungus. The compatibility results revealed the possibility of using bispyribac sodium + metamifop for weed control at recommended doses (70, 80 or 90 g ha-1) under bio intensive disease management programme involving P. fluorescens / T. viride and nutrient management programme involving A. liopferum / A chroococcum

Short communication: The effect of depth of operation and soaking time on catch rates in the experimental tuna longline fisheries in Lakshadweep Sea, India

Most of the marine fish landings from the Indian waters are from the fishing operations in the coastal shelf area, especially from the shallower region ranging from 5 to 100 m depth. Heavy demand for seafood in domestic and international markets underlines the need for increasing the marine fish production. Catch trends indicated that the production from the coastal fisheries is almost stagnant and point towards the need for harvesting unexploited or under exploited oceanic fish resources. Present fleet size of the distant water fishing vessels is very less in spite of India’s vast EEZ of 2.02 million sq km and two Islands groups, viz., Andaman, Nicobar and Lakshadweep. ... Experimental longline operations were initiated in the Lakshadweep Sea to tap the unexploited oceanic tuna fishes. This paper discusses the effect of depth of operation and soaking time on the overall catching performance and species selectivity in the longlines operated