MEASURING THE PROCESS EFFICIENCY OF CONTROLLED WELDING PROCESSES

This The process efficiency in Seem and Arc Welding is a crucial input to Mathematical models of the process and requires the use of an accurate welding calorimeter. In this paper we compare a liquid nitrogen calorimeter with an insulated box calorimeter for measuring the process efficiency of Fronius CMT, Lincoln STT and Rapid Arc, Kemppi FastRoot and standard pulsed GMAW. All the controlled dip transfer processes had a process efficiency of around 85% when measured with the liquid nitrogen calorimeter

Body mass index and risk of pancreatic cancer in a Chinese population

10.1371/journal.pone.0085149PLoS ONE91-POLN

Ecology of mangroves in Mandovi and Zuari estuaries and the interconnecting Cumbarjua canal of Goa

47-53Mangroves are absent in the mouth regions (6 to 7 km long) of both the estuaries. On either bank they have sandy beaches or rocky shores. These zones have high wave action, high salinity and low temperature. The adjoining reaches of estuaries are the zones of mangrove vegetation, extending from the lower part of the middle reaches right up to the upper reaches of these estuaries. Cumbarjua canal is also included in this zone where the wave action is weak, the sandy beaches are replaced by mudflats and the estuarine water is slightly warmer, with lower salinity and higher oxygen. The mangrove flora of these estuaries includes 31 species of 29 genera belonging to 19 families of angiosperms. Succession of species, association, dominance and other aspects of vegetation like density, adaptation and height have also been discussed

Arsenic content in certain marine brown algae and mangroves from Goa coast

283-285Arsenic has been estimated in 7 species each of brown algae and mangroves, including different parts of Sargassum cinereun. Arsenic is more concentrated in brown algae [concentration/factor(CF) range 1.5 - 7 x 10(3)] as compared to mangroves (CF < 1). In brown algae organic As is accounted for about 75-90% of total, but in S. cinereum and Sphacelaria furcigera about 50-60% inorganic As is noted. Basal thallus and reproductive organs of S. cinereum have higher concentration of total and organic As than active photosynthetic portions. However, holdfast accumulates lesser As but its organic As is high (80%). Arsenic in younger leaves of mangroves is marginally more (0.23 mg.kg-1 dry wt.) than that of mature and yellow leaves (0.16 mg. kg-1)

Study of mangrove environment of Maharashtra coast using remote sensing data

90-93Analysis of remote sensing data indicate approximately 210 km2 of the mangrove area along the Maharashtra coast. The dominant species along the coast are Rhizophora mucronata, Avicennia officinalis, A. marina, Sonneratia alba, S. apetala, while Excoecaria agallocha and Acanthus ilicifolius are very common. However, Kandelia candal, Bruguiera gymnorhiza, Ceriops tagal, Lumnitzera racemosa are restricted to few localities. Relatively, luxurient formations and more number of species, occur in Ratnagiri and Raigad districts. Scrubby and scanty vegetation dominated by Avicennia marina, along the Bombay coast, could be attributed to constantly increasing anthropogenic pressures

Biochemical changes in mangrove foliage during growth and decomposition

104-106Biochemical changes during 5 developmental stages of mangrove foliage and subsequent decomposition resulting into detritus have been studied, taking into consideration the nutritional value of foliage. Carbohydrate and lipid decrease during growth and decomposition of the two species (Rhizophora mucronata and Avicennia officinalis). Protein values, on the other hand show a gradual increase probably as a result of microbial colonization and thus enhancing the nutritional value of detritus. C:N ratio in general shows a downward trend in different stages of mangrove foliage