INTERNATIONAL RESEARCH JOURNAL OF SCIENCE AND ENGINEERING

31-40

Authors: Verma SR, Chaudhari PR, Singh RK and Wate SR

The impacts on water environment are inherent part of any major developmental projects in two ways: one is stress on water resources (continuous withdrawal of large quantities of water) and the other is pollution impacts through discharge of effluents. Thes e impacts may be on either or both surface and groundwater resources in the project area depending on the specific situation. In the present study, an environmental aspect of tailings ponds of Bolani iron ore mines Orissa, India was studied. The quantity and characteristics of tailings are among the most important determinants of water quality at mine sites. The slime from the tailing pond showed 59% of material of inferior grade (50% Fe content) and 41% of material with higher grade Fe content (above 56% Fe). The tailing pond water was slightly alkaline with negligible nutrient content and the metals like Cu, Cr, Mn & Fe at trace concentration. The potential hazard of ground water pollution due to seepage from tailings pond was studied by Variably Saturated 2-D Flow and Transport Model (VS2DT) and it was found that the pond seepage of iron from tailings pond to groundwater would be negligible even after 3 years. Therefore groundwater would not be adversely affected. .

47-54

Authors: Bhajbhuje MN

Fungal metabolites are known organic compounds produced by diverse group of fungal organisms in infested host tissues as well as in nutrient growth medium, of them primary metabolites induce growth stimulating response while secondary metabolites appear to create disturbances in normal cell metabolism, growth and karyokinesis in mitotic cell cycle of metabolically active meristematic cells causing cytological abnormalities. The metabolites produced in growth nutrient medium at different growth intervals by Alternaria alternata (Fr.) Keissler, a serious causal pathogen of leaf spot of Trigonella foenum-graceum L, were isolated, confirmed their chemical nature and evaluated for their cytological effects on metabolically active cells of meristematic zone of roots for cultivars, Kasuri and Kranti. An increase in per cent seed germination and seedling emergence without any abnormalities over control were recorded with five days old metabolites treated seeds. The seed germination rate and seedling emergence declined while percent abnormalities increased with metabolites of longer duration. The metabolites from five day old culture filtrate served as growth promoter while metabolites of longer duration as growth inhibitor. The meristematic cells of the root from treated seeds were reported to multiply abnormally due to appearance of many abnormalities such as Anaphase Bridge, laggards, diagonal metaphase and mis-orientation of mitotic spindles. The metabolites responded uniformly in both the cultivars with the parameters undertaken. The U.V. absorption spectrum TLC and phytochemicals tests for isolated toxins confirmed phenolic in nature.

63-68

Authors: Mishra AK and Hasan S

Physico-chemical parameters of river Libri of Koshi zone, Purnia were investigated during March 2009 to February 2010. The result revealed well defined seasonal variation. Relatively high temperature, high value of dissolved oxygen and highest production range of alkalinity were observed which are favorable factors for the production of air breathing fishes. On the basis of studied parameters the river water appears to be of moderate trophic level and hard types. On the whole river is getting pollute due to intense human activities and influence infusion of foreign materials from the surroundings. These materials mainly comprise of decomposable organic matters of plants and animals, terrestrial washing and effluents. A large number of dead bodies are burnt on the bank of the river areas using fire wood and thus formed ashes containing huge quantity of minerals and half burnt flesh content are scattered into the river. This causes nuisance in the river water environment and raises a number of water pollution problems. Thus this water neither can be used for irrigation for crop fields nor for bathing can cattle drinking purposes.