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Mishra, P. P.
- Co-Rich Lithiophorite in Manganese Ores of the Bonai-Keonjhar Belt, Orissa
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Authors
Affiliations
1 Regional Research Laboratory, Bhubaneswar, IN
2 Department of Geology, Utkal University, IN
1 Regional Research Laboratory, Bhubaneswar, IN
2 Department of Geology, Utkal University, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 66, No 4 (2005), Pagination: 407-411Abstract
Co-Rich Lithiophonte is reported for the first time from low-grade Mn ores of the Bonai-Keonjhar belt (Jamda-Koira valley), Orissa. It occurs in two distinct Litho-Host associations, (i) lateritic zone capping Mn-ore horizon and (ii) shear zone-controlled siliceous manganese ore. It mostly appears as thinly banded and as Vug-Filled linings, in close association with cryptomelane. It occurs as Micron-Sized acicular to pea-shaped crystallites in the first litho association and as coarse, radiating crystals showing Zig-Saw pattern arrangement in the second association Co content is low (CoO 0 14 0 8%) in the Fine-Grained variety whereas in the Coarse-Grained variety it ranges up to 2% (CoO 0 14 2 00%). Appreciable quantity of Ni (N10 0 15-1 5%) is observed along with Co only in Coarse-Grained variety. The mechanism of Co-Entry into the two varieties of supergene lithiophorite through adsorption has been discussed Report of Co in terrestrial Mn-ore has opened up new potential in this part of Orissa.Keywords
Lithiophorite (cobaltian), Manganese Ores, Bonai Keonjhar Belt, Orissa.- Bounded Oscillation and Convergence of Solutions in a Neutral Differential Equation with Oscillating Coefficients
Abstract Views :173 |
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Authors
Affiliations
1 Department of Mathematics, Veer Surendra Sai University of Technology, Burla, Dist-Sambalpur, 768018, Orissa, IN
2 Department of Mathematics, Silicon Institute of Technology, Bhubaneswar, Orissa, IN
3 Department of Computer Science, K.I.S.T, Bhubaneswar, Orissa, IN
1 Department of Mathematics, Veer Surendra Sai University of Technology, Burla, Dist-Sambalpur, 768018, Orissa, IN
2 Department of Mathematics, Silicon Institute of Technology, Bhubaneswar, Orissa, IN
3 Department of Computer Science, K.I.S.T, Bhubaneswar, Orissa, IN
Source
The Journal of the Indian Mathematical Society, Vol 76, No 1-4 (2009), Pagination: 141-150Abstract
In this paper sufficient conditions are obtained so that every bounded solution of
(y(t)-p(t)y(t-τ))' + Q(t)G(y(t-σ)) = f(t)
oscillates or tends to zero as t→1, where the coefficient functions Q(t), and f(t) are assumed to be oscillatory. It is known that such assumptions on coefficient functions are very rare in literature. Different ranges for p(t) are considered including the case when p(t) changes sign. The results hold for all types of the non-linear function G and also hold when f(t)≡0.