25 research outputs found
Agglomeration behaviour of steel plants solid waste and its effect on sintering performance
Recycling has been the fascinating topic among the researchers for all times. The present study shows the recycling of steel plant's solid wastes as blast furnace flue dust and sludge towards agglomeration and their use in the production of sinter. These wastes consist of metal oxides and coke fines as a valuable material with some alkali oxides. Using these wastes as it is in the form of fines exacerbate the further processing. Pellets of these wastes are prepared with three types of binders as molasses, dextrin and bentonite. The result reveals that properties as compressive strength, shatter strength, are better in the case of bentonite binder having the productivity of the disc pelletizer machine as 75. After that, these macro pellets used for sintering with iron ore and other ingredients in pot type, down draft laboratory grade sintering machine, which shows very high productivity and good mechanical properties of the sinter as well. The microstructural analysis reveals the presence of re-oxidized hematite and a little bit of a magnetite phase with some slag phases, which confirmed later by XRD analysis. Results also show the decrease in coke rate, i.e. coke consumption to produce sinter and at the same time, this process is highly eco-friendly
Molecular Scanning and Morpho-Physiological Dissection of Component Mechanism in Lens Species in Response to Aluminium Stress.
Aluminium (Al) stress was imposed on 285 lentil genotypes at seedling stage under hydroponics to study its effects on morpho-physiological traits where resistant cultigens and wilds showed minimum reduction in root and shoot length and maximum root re-growth (RRG) after staining. Molecular assortment based on 46 simple sequence repeat (SSR) markers clustered the genotypes into 11 groups, where wilds were separated from the cultigens. Genetic diversity and polymorphism information content (PIC) varied between 0.148-0.775 and 0.140-0.739, respectively. Breeding lines which were found to be most resistant (L-7903, L-4602); sensitive cultivars (BM-4, L-4147) and wilds ILWL-185 (resistant), ILWL-436 (sensitive) were grouped into different clusters. These genotypes were also separated on the basis of population structure and Jaccard's similarity index and analysed to study Al resistance mechanism through determination of different attributes like localization of Al and callose, lipid peroxidation, secretion of organic acids and production of antioxidant enzymes. In contrast to sensitive genotypes, in resistant ones most of the Al was localized in the epidermal cells, where its movement to apoplastic region was restricted due to release of citrate and malate. Under acidic field conditions, resistant genotypes produced maximum seed yield/plant as compared to sensitive genotypes at two different locations i.e. Imphal, Manipur, India and Basar, Arunanchal Pradesh, India during 2012-13, 2013-14 and 2014-15. These findings suggest that Al stress adaptation in lentil is through exclusion mechanism and hybridization between the contrasting genotypes from distinct clusters can help in development of resistant varieties
Seed yield of lentil genotypes grown under low pH condition at Imphal, Manipur, India (pH 4.8) and Basar, Arunachal Pradesh, India (pH 5.1) during 2012â13, 2013â14 and 2014â15.
<p>Data shown are mean ± SEm. Bars that do not share common letters are significantly different by Duncanâs post hoc test at P<0.05.</p
Model based population structure plot with K = 3, using Structure with 46 SSR markers.
<p>Colour codes: red = population I (wild accessions), green = population II (cultigens) and blue = population III (âILLâ series of cultigens).</p
Staining of root tips of Al resistant and sensitive lentil genotypes showing morin staining fluorescence images under control, 74ÎŒM and 148 ÎŒM Al concentrations.
<p>Bar in each figure represents 1 mm.</p
Root tip of lentil seedling showing callose accumulation under control, 74ÎŒM and 148 ÎŒM Al concentrations.
<p>Bar in each figure represents 1 mm.</p
Correlation between genetic similarity measured by mean genetic distance (MGD) and root re-growth (RRG) (cm) in 285 lentil genotypes.
<p>Six contrasting genotypes selected for further evaluation for physiological parameters are marked.</p