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Pandey, Jitendra
- The Skewed N : P Stoichiometry Resulting from Changing Atmospheric Deposition Chemistry Drives the Pattern of Ecological Nutrient Limitation in the Ganges
Abstract Views :265 |
PDF Views:96
Authors
Affiliations
1 Environmental Science Division, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221 005, IN
2 Department of Botany, Mahatma Gandhi Kashividyapith University, Varanasi 221 002, IN
1 Environmental Science Division, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221 005, IN
2 Department of Botany, Mahatma Gandhi Kashividyapith University, Varanasi 221 002, IN
Source
Current Science, Vol 107, No 6 (2014), Pagination: 956-958Abstract
No Abstract.Full Text
- Consequences of Western Disturbance-Triggered Cooling on the Flowering of Tree Species in the Himalayan Terai Region
Abstract Views :249 |
PDF Views:80
Authors
Affiliations
1 Plant Diversity, Systematics and Herbarium Division, CSIR-National Botanical Research Institute, Lucknow 226 001, IN
2 Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221 005, IN
1 Plant Diversity, Systematics and Herbarium Division, CSIR-National Botanical Research Institute, Lucknow 226 001, IN
2 Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221 005, IN
Source
Current Science, Vol 109, No 10 (2015), Pagination: 1781-1782Abstract
No Abstract.Full Text
- Environmental and Socio-Economic Impacts of Fire in Jharia Coalfield, Jharkhand, India:An Appraisal
Abstract Views :841 |
PDF Views:143
Authors
Affiliations
1 Mine Fire Division, CSIR-Central Institute of Mining and Fuel Research, Dhanbad 826 015, IN
2 Department of Mining Engineering, Indian School of Mines, Dhanbad 826 001, IN
3 Ministry of Science and Technology, Government of India, Anusandhan Bhawan, New Delhi 110 001, IN
1 Mine Fire Division, CSIR-Central Institute of Mining and Fuel Research, Dhanbad 826 015, IN
2 Department of Mining Engineering, Indian School of Mines, Dhanbad 826 001, IN
3 Ministry of Science and Technology, Government of India, Anusandhan Bhawan, New Delhi 110 001, IN
Source
Current Science, Vol 110, No 9 (2016), Pagination: 1639-1650Abstract
Phenomenon of coal mine fire has a long history on international magnitude in the destruction of valuable natural resources. It dominantly contributes towards adverse impact on environment. Societal influence in terms of health and life hazard is one of the key factors in mine fire areas. This paper focused on socio-economic and environmental impacts of fire in Jharia coalfield (JCF), Jharkhand, India. Issue related to mine fire in various legislations (Mines Act 1952, Coal Mine Regulation 1957, etc.) has been discussed with a view to overcome such situations. A few mitigative measures and proper management of coal mine fire has also been suggested.Keywords
Coalfields, Coal Mine Fire, Safety and Environment, Subsidence.Full Text
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- The Exclusion Zone of Narora Atomic Power Station - A Control Hothouse
Abstract Views :262 |
PDF Views:85
Authors
Affiliations
1 Botanical Survey of India, Central Regional Centre, 10, Chatham Lines, Allahabad 211 002, IN
2 Narora Atomic Power Station, Narora, Bulandshahr 202 389, IN
1 Botanical Survey of India, Central Regional Centre, 10, Chatham Lines, Allahabad 211 002, IN
2 Narora Atomic Power Station, Narora, Bulandshahr 202 389, IN
Source
Current Science, Vol 111, No 1 (2016), Pagination: 11-12Abstract
A nation's development and prosperity goes hand in hand with its capacity to generate renewable sources of energy through power generation, which is crucial to balance the depleting natural resources. However, regions with Nuclear Atomic Power Station (NAPS) are often perceived to be infiltrated with toxic emissions percolating in their water reservoirs and atmosphere, which may be detrimental for all life forms in the vicinity. A botanical trip was conducted to NAPS at Narora (Figure 1) while carrying out survey and plant collection of the Upper Ganga Ramsar Site in Uttar Pradesh, India. This riverine Ramsar Site extends along 85 km stretch of the River Ganga beginning at Brij Ghat in Ghaziabad district and ending at Narora in Bulandshahr district, passing through the Budaun and Moradabad districts.Full Text
- Anthropogenic Drivers Shift Diatom Dominance–Diversity Relationships and Transparent Exopolymeric Particles Production in River Ganga:Implication for Natural Cleaning of River Water
Abstract Views :233 |
PDF Views:74
Authors
Affiliations
1 Department of Botany, Mahatma Gandhi Kashi Vidyapith, Varanasi 221 002, IN
2 Environmental Science Division, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221 005, IN
3 Department of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi 221 005, IN
1 Department of Botany, Mahatma Gandhi Kashi Vidyapith, Varanasi 221 002, IN
2 Environmental Science Division, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221 005, IN
3 Department of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi 221 005, IN
Source
Current Science, Vol 113, No 05 (2017), Pagination: 959-964Abstract
We studied the relationships among diatom biodiversity,transparent exopolymeric particles (TEP) and water quality at the confluences of four tributaries of River Ganga (Yamuna, Assi, Varuna and Gomti)during low flow. Diatom abundance changed with concurrent shifts in water chemistry with dominance–diversity curves markedly skewed from a log-normal pattern. Canonical correspondence analysis segregated chloride-loving and calcifilous species from N- and P-favoured taxa. Despite pollution-induced reduction of diatom diversity, TEP production continued to rise plausibly due to dominance transference of TEP producers. However, with further increase in nutrient pollution, TEP declined. Since TEP enhances sedimentation removal of carbon, nutrients and heavy metals, the present study confirms one of the fundamental mechanisms that underline the self-purification capacity of River Ganga and has relevance from a biodiversity/river conservation perspective.Keywords
Anthropogenic Drivers, Carbon Sequestration, Diatoms, Transparent Exopolymeric Particles.Full Text
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- Challenges and Knowledge Gaps in Ecological Sciences
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Authors
Affiliations
1 Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
1 Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
Source
Current Science, Vol 114, No 01 (2018), Pagination: 19-21Abstract
As a science, the subject of ecology is relatively young, although India’s ecological concerns are ischolar_mained deep in our civilization as evidenced in Vedic literature. In the modern context, the subject has grown enormously and many potential areas have been identified. However, there are still a number of challenges and knowledge gaps. A symposium was organized to address these issues which was attended by about 250 delegates from all over the country.Full Text
- Point Source-Driven Seasonal Hypoxia Signals Habitat Fragmentation and Ecosystem Change in River Ganga
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PDF Views:88
Authors
Affiliations
1 Ganga River Ecology Research Laboratory, Environmental Science Division, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
2 Department of Botany, Mahatma Gandhi Kashividyapith University, Varanasi 221 002, IN
1 Ganga River Ecology Research Laboratory, Environmental Science Division, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
2 Department of Botany, Mahatma Gandhi Kashividyapith University, Varanasi 221 002, IN
Source
Current Science, Vol 117, No 12 (2019), Pagination: 1947-1949Abstract
The development of dissolved oxygen deficit (DOD; hypoxia) has been reported to expand over 2.45 × 105 km2 area of the ocean from over 400 different areas worldwide1. Although cultural eutrophication has greatly accelerated DOD in estuaries and semi-enclosed seas2,3, it is not a common phenomenon in large rivers4. Hydrological continuum reinforces oxygenation, and therefore, development of hypoxia (dissolved oxygen (DO) < 2.0 mg l–1) is less critical in large rivers. River ecosystems usually respond to gradual changes in a smooth manner. However, smooth and continuous changes can be interrupted by sudden abrupt switches to a mosaic of alternative states leading to loss of resilience5. Such shifts are most often driven externally, for instance, point source flushing, but they can trigger internal feedbacks leading the system to behave chaostically even in the absence of external forcing6.Full Text
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- Specific blasting technique for tunnelling in hot zones
Abstract Views :172 |
PDF Views:73
Authors
Affiliations
1 CSIR-Central Institute of Mining and Fuel Research, Barwa Road, Dhanbad 826 001, IN
1 CSIR-Central Institute of Mining and Fuel Research, Barwa Road, Dhanbad 826 001, IN
Source
Current Science, Vol 121, No 9 (2021), Pagination: 1227-1234Abstract
Encountering hot zones while excavating tunnels for hydropower projects in the Himalaya, India, is a challenge for civil engineers. Blasting within the hot rock mass can pose serious threats due to possibility of temperature-induced unintended detonation of explosives. Moreover, the paucity of a suitable rock-blasting method for these hot zones sometimes compels engineers to realign the tunnel. Such a realignment is costly and time-consuming. A temperature of 50–98°C was encountered while excavating the rock mass for head race tunnel of Karchham–Wangtoo Hydro-Electric Project, Himachal Pradesh, India. The Directorate General of Mine Safety, India, suggests that blast-holes with temperature greater than 80°C must not be charged and blasted. Similarly, the use of electric or non-electric detonators is discouraged above 70°C because of premature detonation. Hence excavation works were suspended for tunnel construction. A unique drill and blast method has been adopted for blasting the hot strata in the tunnel. The technique described in this study can be easily followed in similar situations for tunnel-rock excavationKeywords
Excavation sequence, geothermal energy, hot zone, quenching, tunnel blastingFull Text
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