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Singh, D. R.
- Influence of Density of Emulsion Explosives on its Velocity of Detonation and Fragmentation of Blasted Muckpile
Abstract Views :261 |
PDF Views:125
Authors
Affiliations
1 Department of Mining Engineering, Indian Institute of Technology (ISM), Dhanbad-826 004, IN
2 Sarpi Colliery, Bankola Area, Eastern Coalfield Limited, District Barddhaman 713 363, IN
3 Gulf Oil Corporation Limited, Kolkata 700 107, IN
1 Department of Mining Engineering, Indian Institute of Technology (ISM), Dhanbad-826 004, IN
2 Sarpi Colliery, Bankola Area, Eastern Coalfield Limited, District Barddhaman 713 363, IN
3 Gulf Oil Corporation Limited, Kolkata 700 107, IN
Source
Current Science, Vol 112, No 03 (2017), Pagination: 602-608Abstract
Opencast mining accounts for about 86% of the produced coal in India. Most of the opencast mines in the country use bulk emulsion explosives. The total consumption of explosives in India is around 550,000 tonnes annually. It has been shown that detonation velocities vary with the density of the emulsion explosive. Here we describe experiments that have been conducted to understand the influence of velocity of detonation of emulsion explosives on fragmentation of blasted muckpile over a range of densities. The density of explosives was varied from 0.6 to 1.1 g/cc which resulted in the variation of detonation velocity from 3262 to 4624 m/s.Keywords
Blasted Muckpile, Detonation Velocity, Emulsion Explosives Density, Opencast Mines.Full Text
- Asymbiotic Seed Germination and In Vitro Seedling Development of Paphiopedilum villosum (Lindl.) Stein, a Valuable and Vulnerable Lady’s Slipper Orchid from India
Abstract Views :607 |
PDF Views:83
Authors
Affiliations
1 ICAR-National Research Center for Orchids, Pakyong, Sikkim 737 106, IN
1 ICAR-National Research Center for Orchids, Pakyong, Sikkim 737 106, IN
Source
Current Science, Vol 114, No 02 (2018), Pagination: 266-269Abstract
Orchids of Paphiopedilum genera, commonly known as lady’s slipper orchids, are popular as potted plants. Nearly 131 species have been reported worldwide, among which 9 are found in the states of North East India. Paphiopedilum villosum (Lindl.) is one such species which is listed under vulnerable category in the latest version of the IUCN Red Data Book. Its area of occupancy (AOO) is limited to only 56 sq. km in the world and its population trend has reduced significantly in recent decades. The species is protected under Schedule VI of the Wildlife Protection Act of India. Utilization of only cultivated specimens in the trade and long-term community-based conservation to protect the habitat and species has been recommended by IUCN.Full Text
References
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- Why Nudging Farmers for Volunteer Adoption of Soil and Water Conservation Technologies in Rainfed Areas of India is Challenging?
Abstract Views :209 |
PDF Views:90
Authors
Affiliations
1 ICAR-Indian Institute of Soil and Water Conservation, Research Centre, Koraput 763 002, IN
2 ICAR-Indian Agricultural Research Insti-tute, Pusa Campus, New Delhi 110 012, IN
3 ICAR-Indian Institute of Soil and Water Conservation, 218 Kaulagarh Road, Dehradun 248 195, IN
1 ICAR-Indian Institute of Soil and Water Conservation, Research Centre, Koraput 763 002, IN
2 ICAR-Indian Agricultural Research Insti-tute, Pusa Campus, New Delhi 110 012, IN
3 ICAR-Indian Institute of Soil and Water Conservation, 218 Kaulagarh Road, Dehradun 248 195, IN
Source
Current Science, Vol 121, No 12 (2021), Pagination: 1533-1535Abstract
No Abstract.Keywords
No Keywords.Full Text
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