Refine your search
Co-Authors
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Choudhary, A. K.
- Rb-Sr Dating of Sambalpur Granodiorite, Western Orissa
Abstract Views :205 |
PDF Views:151
Authors
Affiliations
1 Department of Physics, Samastipur College, Samastipur, Bihar, IN
2 Department of Earth Sciences, Sambalpur University, Orissa, IN
3 Department of Geology, Calcutta University, Calcutta, W.B., IN
4 National Geophysical Research Institute, Hyderabad, A.P., IN
1 Department of Physics, Samastipur College, Samastipur, Bihar, IN
2 Department of Earth Sciences, Sambalpur University, Orissa, IN
3 Department of Geology, Calcutta University, Calcutta, W.B., IN
4 National Geophysical Research Institute, Hyderabad, A.P., IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 47, No 4 (1996), Pagination: 503-506Abstract
The wholerock Rb-Sr isochron age of 2380 ± 44 Ma (Sr<SUB>i</SUB> = 0.70492 ± 14) obtained for the Sambalpur granodiorite indicates an Early Proterozoic granitic activity in this region younger than Singhbhum Granite (ca. 3.3 to 3.1 Ga). Comparable Rb-Sr ages have also been reported for different granites from Mandhya Pradesh.Full Text
- Crustal Accretion and Metamorphism of Mesoarchean Granulites in Palghat-Cauvery Shear Zone, Southern India
Abstract Views :228 |
PDF Views:0
Authors
Affiliations
1 Institute Instrumentation Centre, Indian Institute of Technology Roorkee, Roorkee - 247 667, IN
2 Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee - 247 667, IN
1 Institute Instrumentation Centre, Indian Institute of Technology Roorkee, Roorkee - 247 667, IN
2 Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee - 247 667, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 77, No 3 (2011), Pagination: 227-238Abstract
This work provides unequivocal evidence of the existence of Mesoarchean granulite facies metamorphic event in the Palghat-Cauvery Shear Zone (PCSZ) of South India. Charnockite samples from two prominent hills at Kollaimalai (KM) and Pachchaimalai (PM) as well as from two quarries within the Bhavani Shear Zone (BSZ) have been analyzed for their Sm-Nd and Rb-Sr ages to investigate the existence or otherwise of the Archean granulite facies events within the PCSZ. The Rb-Sr whole-rock isochron ages for massive charnockites from both the hills appear to be contemporaneous at 2.9 Ga with the initial Sr isotopic ratios of 0.7012 and 0.7014, respectively. However, the Rb-Sr data for whole-rock samples of basic granulites from one of the quarries within the BSZ indicate open system behavior, while the charnockites from the other quarry have insufficient spread in 87Rb/86Sr ratios and do not yield any isochron. The Sm-Nd data, on the other hand, do not distinguish between the massive charnockite and the lowland charnockite and yield Depleted Mantle model ages in the range 2.98±0.3 Ga for all of them. The εT CHUR for all of these rocks are highly positive. Both the Sr isotopic ratios and positive εT CHUR values for these rocks strongly suggest a mantle source for all of them. An upper age limit of ∼3.28 Ga may be assigned to the crustal accretion of the protolith of all these rocks on the basis of their Nd model ages. The Rb-Sr isochron ages of 2.9 Ga for the two massifs could be the age of granulite facies metamorphism. Thus, the metamorphism in the KM and PM Hills took place within ∼100 Ma of crustal accretion of these rocks and probably was part of the same geological event of crust formation and metamorphism. The open system behavior with respect to Rb-Sr isotopes in the basic granulite from Bhavani is possibly due to the migration of Sr isotopes, triggered during the later shearing of these rocks.Keywords
Rb-Sr and Sm-Nd Geochronology, Granulite Facies Metamorphism, Southern Granulite Terrain.
- Biomass and Secondary Production of Earthworm Drawida willsi (Michaelsen) from a Tropical Agroecosystem in Ranchi, Jharkhand
Abstract Views :118 |
PDF Views:0
Authors
Affiliations
1 Department of Zoology, J. N. College, Dhurwa, Ranchi-834 004, Jharkhand, IN
2 Department of Zoology, K. C. B. College, Bero, Jharkhand, IN
3 Department of Zoology, Ranchi College, Ranchi-834 008, Jharkhand, IN
1 Department of Zoology, J. N. College, Dhurwa, Ranchi-834 004, Jharkhand, IN
2 Department of Zoology, K. C. B. College, Bero, Jharkhand, IN
3 Department of Zoology, Ranchi College, Ranchi-834 008, Jharkhand, IN
Source
Nature Environment and Pollution Technology, Vol 12, No 1 (2013), Pagination: 179-182Abstract
Biomass variation, secondary production and turn-over of the earthworm Drawida willsi (Michaelsen) was assessed from a tropical agroecosystem site at Ranchi for 18 months. The total biomass ranged between 0.88 ± 0.33 and 29.55 ± 3.15 g dry weight m-2. Secondary production of 53.37 g dry weight m-2 yr-1 was obtained which in terms of calorific value amounts to 246.57 kcal m-2 yr-1. Biomass turnover value was 4.99.Keywords
Drawida willsi, Secondary Production, Agroecosystem.Full Text
- In vitro Shoot Proliferation for Rapid and Mass Production of Quality Planting Materials of Bambusa nutans in the Climatic Conditions of Bihar, India
Abstract Views :752 |
PDF Views:394
Authors
Affiliations
1 Plant Tissue Culture Research - cum - Production Laboratory, Dept. of Botany & Biotechnology, TNB College campus, T. M. Bhagalpur University, Bhagalpur - 812007, Bihar, IN
1 Plant Tissue Culture Research - cum - Production Laboratory, Dept. of Botany & Biotechnology, TNB College campus, T. M. Bhagalpur University, Bhagalpur - 812007, Bihar, IN
Source
Indian Journal of Energy, Vol 5, No 2 (2016), Pagination: 1-11Abstract
Objective: Bambusa nutans is a commercially important bamboo. The current study was undertaken for mass production of B. nutans in the agroclimatic conditions of Bihar.
Methods/Statistical analysis: Axillary shoot proliferation through tissue culture techniques was employed for this study. The aforesaid technique is the only method for the rapid and mass propagation of Bambusa nutans. Bamboo germplasm grown in TNB College campus was used as the source of explant. The various sizes of explants were selected to find out the most suitable for culture in the climate of Bihar. In each treatment of hormone, experiments were designed in triplicate and standard deviations were calculated. Hormone free cultures were used as control.
Findings: Out of various PGRs used for shoot proliferation, BAP (cytokinin) was found to be the most effective. With the increase in the concentrations of BAP, there was corresponding increase in the number of microshoots. Maximum initiation was observed when BAP was used in the concentration of 3mg/l. For most of the species of bamboos, NAA has been reported effective for ischolar_maining, however, we observed IBA comparatively more efficient auxin. The present findings (bud breakage, shoot multiplication, in vitro ischolar_maining and hardening procedures) will be helpful for rapid and mass production of Bambusa nutans in Bihar. This is the first in vitro culture report of bamboo in the climatic conditions of Bihar.
Applications/Improvements: The result obtained from this study has now set a defined protocol for rapid propagation of Bambusa nutans for the state of Bihar, which can help to promote economic upliftment of rural people.
Keywords
In vitro, Shoot Proliferation, Bambusa nutans, Mass Propagation, Bihar.Full Text
References
- J Geilis, J Oprins. The strategic role in biotechnology in mass scale production of woody bamboos. In: Sustainable agriculture for food, energy and industry, N. El Bassam, R.K. Bheland B.Prochnow (Eds.),London: James and James. 1998; 165-171.
- B Patel, B Gami, N Patel, V Baria, One step pre- hardening of Bambusa balcooa Roxb. Journal of phytology, 2015,7,2-4.
- KD. Mudoi, SP Saikia, M Borthakur. Effect of nodal positions, seasonal variations, shoot clump and growth regulators on micro propagation of commercially important bamboo, Bambusa nutans Wall ex. Munro. African Journal of Biotechnology, 2014, 13(9), 1961-1972.
- Y Mishra, PK Patel, S Yadav, F Shirin, SA Ansari. A micro propagation system for cloning of Bambusa tulda Roxb. Science Direct, 2008, 115, 315-318.
- I D Arya, S Arya. In vitro shoot proliferation and Somatic Embryogenesis: Means of Rapid Bamboo multiplication. 10th world bamboo congress, Korea, 2015
- BM Kavitha, S Kiran. An efficient technique for in vitro propagation of Dendrocalamus brandisii Kurz using Nodal segment. Global Journal of Microbiology and Biotechnology, 2014, 2(1), 1-10.
- P Sharma, KP Sarma. In vitro propagation of Bambusa nutans in commercial scale in Assam, India. Journal of environmental research development. 2014, 9(2), 349-352.
- P Sharma and KP Sarma. In vitro Propagation of Bambusa pallida in commercial scale in Assam, India. Journal of environmental research development.2014, 8(4), 896-900.
- P Sharma, KP Sarma. In vitro Propagation of Bambusa balcooa in commercial scale in Assam, India. International conference on Advances in Biotechnology and Pharmaceutical sciences, Bangkok, 2011, 249-251.
- R L Banik, Islam SAMN, Hadiuzzaman S, In vitro regeneration of multiple shoots in three Bamboo species. Plant Cell Tissue and Organ Culture.1993, 3(2), 101-106.
- P Sharma, KP Sarma. In vitro propagation of Bambusa tulda: An important plant for better environment. Journal of environmental research and development.2013; 7(3), 1216-1221.
- RS Singh, S Dalal, R Singh, AK Dhawan, RK Kalia, Factors influencing in vitro bud break, shoot multiplication and plantlet regeneration of Dendrocalamus hamiltonii Arn. ex Munro. Indian Journal of Plant Physiology.2012, 17(1), 9-21.
- J Brar, A Shafi, P Sood, M Anand, A Sood. In-vitro propagation, biochemical studies and assessment of clonal fidelity through molecular markers in Bambusa balcooa, Journal of tropical forest science, 2014, 26(1), 115-124
- A Sood, PS Ahuja, OP Sharma, S Godbole. In vitro protocols and field performance of elites of an important bamboo Dendrocalamus hamiltonii Nees et Arn. Ex. Munro. Plant Cell Tiss Organ. Culture. 2002; 71, 55-63.
- VM Jimenez, J Castillo, E Tavares, E Guevara, M Montie. In vitro propagation of the neotropical giant bamboo, Guadua angustifolia Kunth, through axillary shoot proliferation. Plant Cell Tissue Organ Culture.2006, 86 (3), 389-395.
- D Negi, S Saxena. Micropropagation of Bambusa balcooa Roxb. through axillary shoot proliferation, In vitro Cellular & Development Biology-Plant. 2011, 47 (5), 604-610.
- ID Arya, B Kaur, S Arya. Rapid and mass propagation of economically important Bamboo Dendrocalamus hamiltonii. Indian Journal of Energy., 2012, 1(1), 11-15
- Islam SAMN, MM Rahman. Micro-cloning in commercially important six bamboo species for mass propagation and at large scale cultivation. Plant Tissue Culture Biotechnology. 2005, 15,104-110.
- KD Mudoi, SP Saikia, A Goswami, A Gogoi, D Bora, M Borthakur. Micro propagation of Important Bamboos: A review. African Journal of Biotechnology, 2013, 12(20), 2774-2780.
- M Kaur, S Kapruwan, M Bakshi. Rapid in vitro propagation of the solid bamboo, Dendrocalamus strictus Nees, through axillary shoot proliferation. Biotechnology International, 2014, 7(3), 59-61.
- CS Lin, Chang WC. Micro propagation of Bambusa edulis though nodal explants of field grown culms and flowering of regenerated plantlets. Plant cell reports, 1998, 17(1), 616-620.
- RK Agnihotri, Nandi S. In vitro shoot cut: A high frequency multiplication and ischolar_maining method in the bamboo Dendrocalamus hamiltonii, Biotech, 2009, 8(2), 259-263.
- R Yasodha, P Sumathi, Mallinga, K Gurumurthi. Genetic enhancement and mass production of quality propagules of Bambusa nutans and Dendrocalamus membranaceous, Indian Forester, 1997, 123(4), 303-306.
- C Lin, C Liang, H Hsaio, M Lin, W Chang, In vitro flowering of green and albino Dendrocalamus latiflorus, New Forests.2007, 34, 177-186.
- S Arya, S Sharma, R Kaur, ID Arya. Direct regeneration of shoots from immature inflorescences in Dendrocalamus asper (edible bamboo) leading to mass propagation. The Journal of the American Bamboo Society, 2008, 21(1), 879-882.
- A Ndiaye, M Diallo, D Niang, Gassama - dia Y. In vitro regeneration of adult trees of Bambusa vulgaris, African Journal of Biotechnology.2006,5,1245-1248,
- J Aitken – Christie, T Kozai, M Lila Smith. Automation and environmental control in plant tissue organ culture. Springer Science+Buisness Media Dordrecht.1995, 493-516.