Enter records

ID: 63202
Title: Isolation of fungi from various habitats and their possible bioremediation
Author: Farazimah Yakop, Hussein Taha and Pooja Shivanand
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (5) 733-740 (2019)
Subject: Isolation of fungi from various habitats and their possible bioremediation
Keywords: Bioremediation, fungi, habitats, hydrocarbon degradation.
Abstract: Fungi are the most diverse and adaptable group of living organisms. The literature highlights that colonization density and fungal diversity can be affected by factors such as salinity, pH, temperature, altitude and availability of nutrients. The present article discusses isolation and characterization of fungi from different ecosystems like forests, mangroves and coastal areas. Fungal interaction with ecosystems is reported to play an important role in the biodiversity, survivability, propagation and productivity of plants. Fungi have established a beneficial association with numerous hosts and have the capability to degrade environmental pollutants such as hydrocarbons and by-products. Hence, fungi and fungal products like extracellular hydrolytic and lignin-degrading enzymes, and surfactants offer eco-friendly and cost-effective strategies to address pollution, especially with respect to bioremediation of oil spills and polyaromatic hydrocarbons.
Location: T E 15 New Biology building
Literature cited 1: Simões, M. F. et al., Soil and rhizosphere associated fungi in gray mangroves (Avicennia marina) from the Red Sea – a metagenomic approach. Genomic. Proteomic. Bioinformat., 2015, 13, 310–320. Behera, B. C., Mishra, R. R. and Thatoi, H. N., Diversity of soil fungi from mangroves of Mahanadi delta, Orissa, India. J. Microbiol. Biotechnol. Res., 2012, 2, 375–378.
Literature cited 2: Madavasamy, S. and Panneerselvam, A., Diversity of mycoflora in mangrove soil at Karankadu, Ramanathapuram (dt), east coast of Tamil Nadu, India. Int. J. Curr. Microbiol. Appl. Sci., 2013, 2, 50–61. Khalil, A. M. A., El-Sheikh, H. H. and Sultan, M. H., Distribution of fungi in mangrove soil of coastal areas at Nabq and Ras Mohammed protectorates. Int. J. Curr. Microbiol. Appl. Sci., 2013, 2, 264–274.

ID: 63201
Title: Soilless farming – the next generation green revolution
Author: Bikram Pradhan and Bandita Deo
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (5) 728-732 (2019)
Subject: Soilless farming – the next generation green revolution
Keywords: Hydroponics, land conservation, nutrient, soilless culture.
Abstract: In recent years, due to a rapid increase in world population, many challenges have come to limelight. One of these challenges is the reduction in per capita land available for soil-based farming, which leads to other agricultural and environmental issues. Under these critical circumstances, it became necessary to develop advanced technologies and techniques to withstand the current situation. Although several works were carried out on cultivation of plants in soil and in vitro, few of these are concentrated on soilless cultures. Soilless agriculture is a new promising method for improving cultivation of different cash crops. Besides reservation and restoration of cultivation lands, soilless farming, especially close-loop system, has various advantages: it utilizes recycled fixed amount of water, saves 85–90% of irrigation water, can be implemented in areas unfavorable for ordinary farming, almost zero environmental pollution, better yield than conventional cultivation. In the present study, various techniques of soilless farming are elaborated and a basic design of eco-friendly soilless farming unit is proposed.
Location: T E 15 New Biology building
Literature cited 1: Chaplin-Kramer, R. et al., Spatial patterns of agricultural expansion determine impacts on biodiversity and carbon storage. Proc. Natl. Acad. Sci., 2015, 112, 7402–7407. Foley, J. A. et al., Solutions for a cultivated planet. Analysis. Nature, 2011, 478, 337–342.
Literature cited 2: Killebrew, K. and Wolff, H., Environmental Impacts of Agricultural Technologies, Evans School of Public Affairs, University of Washington, 2014. Lambin, E. F. et al., Estimating the world’s potentially available cropland using a bottom-up approach. Glob. Environ. Change, 2013, 23, 892–901.

ID: 63200
Title: Ecosystem services approach for revitalizing agriculture in India
Author: M. Manjula, L. Venkatachalam, P. Mukhopadhyay and Lalit Kumar
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (5) 723-727 (2019)
Subject: Ecosystem services approach for revitalizing agriculture in India
Keywords: Agro-ecosystems, evergreen revolution, payment for ecosystem services, pro-environmental agricultural production.
Abstract: Agricultural landscapes referred to as ‘agro-ecosystems’ provide both marketable and non-marketable ecosystem services. The ability of agro-ecosystems to provide ecosystem services is limited by the nature of production systems and production method. Promotion of input-intensive production systems results in short-term productivity gains along with long-term ecological and environmental losses. India’s agriculture suffers from various ecological problems such as soil pollution, overexploitation of groundwater and loss of biodiversity. Policy measures aimed at improving agriculture should shift from a purely ‘productivity enhancement’ objective towards promotion of ecologically sustainable pro-environmental agricultural production (PAP) practices to realize the goal of ‘productivity in perpetuity’. This article examines the feasibility of ‘nudges and incentives’ in payment for ecosystem services/agri-environmental schemes (PES/AES) type schemes in India which could be a possible policy solution. It could nudge farmers to PAP practices and would be fiscally feasible even for individual states to adopt in a federal system of governance.
Location: T E 15 New Biology building
Literature cited 1: Tilman, D. et al., Forecasting agriculturally driven global environmental change. Science, 2001, 292(5515), 281–284. Ploeg, Van der and de Groot, R. S., The TEEB Valuation Database – a Searchable Database of 1310 Estimates of Monetary Values of Ecosystem Services. Foundation for Sustainable Development, Wageningen, The Netherlands, 2010.
Literature cited 2: Power, A. G., Ecosystem services and agriculture: tradeoffs and synergies. Philos. Trans. R. Soc. London, Ser. B, 2010, 365, 2959–2971. Swinton, S., Lupi, F., Robertson, G. P. and Landis, D., Ecosystem services from agriculture: looking beyond the usual suspects. Am. J. Agric. Econ., 2006, 88(5), 1160–1166.

ID: 63199
Title: Solar module installation in India: concerns, options and roadmap
Author: Amlan J. Pal
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (5) 714-722 (2019)
Subject: Solar module installation in India: concerns, options and roadmap
Keywords: Module manufacturing, road map in the Indian context, thin-film technology, solar cell materials.
Abstract: This article discusses the concerns, choices and tentative avenues towards the success of module installation for solar power production in India. Renewable energies, especially solar modules, have played a vital role in India’s recent success in the generation of electricity. Several initiatives have accordingly been taken to implement a sustainable model of development. To achieve those targets, it is necessary to deploy the time-tested and dependable crystalline silicon solar modules initially. To attain self-reliance and economic sustainability ($/W), India should also look beyond silicon solar cell modules by setting up foundries favourable for thin-film technologies as well. With already established thin-film materials like copper indium gallium selenide and cadmium telluride, development of advanced solar energy material, such as copper zinc tin sulphide and hybrid halide perovskites is therefore of unquestionable importance. On a short-term frame, contribution from these thin-film modules may not look very significant. These non-silicon modules should now supplement silicon technology to accomplish the present requirement and gradually phase out silicon modules in the long run.
Location: T E 15 New Biology building
Literature cited 1: Electricity and Elections in India; http://www.thecitizen.in/index. php/NewsDetail/index/8/10114/Electricity-And-Elections-In-India Energy in India; https://en.wikipedia.org/wiki/Energy_in_India
Literature cited 2: Electricity sector in India; https://en.wikipedia.org/wiki/Electricity_sector_in_India Power for all; http://powermin.nic.in/en/content/power-al

ID: 63198
Title: Evidence for underwater current activity on the upper slope of the carbonate platform off western India using multibeam bathymetry
Author: B.Chakraborty, V.Purachandra Rao, Tejas Salkar, Vasudev P.Mahale and John Kurien
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (5) 711-713 (2019)
Subject: Evidence for underwater current activity on the upper slope of the carbonate platform off western India using multibeam bathymetry
Keywords: evidence, Underwater current activity, carbonate platform, western I ndia, Multibeam bathymetry
Abstract: The carbonate platform examined in this study is on the outer continental shelf of the northwestern margin of India at water depths between 60 and 90 m It is located off the Narmada and Tapi rivers, which debouch abundant terrigenous sediments and freshwater onto the coast. Despite abundant terrigenous material expected on the platform, it comprises <10% terrigenous sediments but abundant carbonate sediments. There may be strong surface or underwater currents preventing deposition of terrigenous material but no evidence for the same has been reported.
Location: T E 15 New Biology building
Literature cited 1: Nair, R. R., Proc. Indian Acad. Sci. Sect. B, 1971, 73, 148–154. Nair, R. R., Indian J. Mar. Sci., 1975, 4, 25–29
Literature cited 2: Nair, R. R. and Pylee, A., Bull. Natl. Inst. Sci., India, 1968, 38, 411–420. Nair, R. R. and Hashimi, N. H., Mar. Geol., 1981, 41, 309–319.

ID: 63197
Title: DiatomBase – Principal online catalogue of diatoms
Author: Surajit Roy and Jai Prakash Keshri
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (5) 703-703 (2019)
Subject: DiatomBase – Principal online catalogue of diatoms
Keywords: DiatomBase, catalogue of diatoms
Abstract: Diatoms are the most ubiquitous and species-rich lineages of siliceous microalgae (phylum: Bacillariophyta) that play an important role in the ecosystem by contributing about 20% of the oxygen we breathe. Due to their morphology and various uses, they have attracted the attention of researchers the world over. Efforts have been made over one and half century to catalogue diatoms. However, most of the catalogues have limited impact due to area of distribution covered. The multi-volume set of catalogues of Mills and Van Landingham are, however, a widely cited resource due to their coverage. Tempère also enlisted diatom genera in Le Diatomiste.
Location: T E 15 New Biology building
Literature cited 1: Trèguer, P., Nelson, D. M., van Bennekom, A. J., DeMaster, D. J., Leynaert, A. and Quèguiner, B., Science, 1995, 268, 375– 379. Habirshaw, F., Catalogue of the Diatomaceous with Reference to the Various Published Descriptions and Figures, Edison Electric pen process, New York, USA, 1877, p. 272.
Literature cited 2: Peragallo, M., Le Catalogue Géneral des Diatomées, Clermont-Ferrand, France, 1897, vol. 1, i–xviii, 1471; 1903, vol. 2, pp. 472–973. Chase, H. H., Index Diatomacearum Linden, Michigan, USA, 1907, p. 662.

ID: 63196
Title: Modulation in activity profiles in insecticide-resistant population of tobacco caterpillar, Spodoptera litura (Fabricius)
Author: P. Sreelakshmi, Thomas Biju Mathew , K. Umamaheswaran and A. Josephrajkumar
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (4) 664-669 (2019)
Subject: Modulation in activity profiles in insecticide-resistant population of tobacco caterpillar, Spodoptera litura (Fabricius)
Keywords: Detoxification enzymes, insecticide resistance, Spodoptera litura, synergists.
Abstract: Activity spectrum of detoxification enzymes was systematically assessed in tobacco caterpillar, Spodoptera litura collected from four locations in Kerala, India, to decipher the mechanism of insecticide resistance. Using the susceptible check ICAR-NBAIR strain, specific activity profiles of acetylcholine esterase (AChE) were found to be 16.16-, 10.71- and 4.88-fold higher in the Kovilnada, Palappur and Kanjikuzhi populations respectively. Specific activities of mixed function oxidase (MFO) were also found to be 19.24-, 17.11-6.08-fold higher in the same populations respectively, indicating the predominance of AChE and MFO towards imparting resistance. Carboxylesterase (CarE) and glutathion-S-transferase (GST) specific activity profiles were 3.62- and 3.37-fold higher in the Kovilnada population, followed by 2.89- and 2.98-fold higher in the Palappur population and as 2.10- and 1.15-fold higher in the Kanjikuzhi population, indicating their partial role in resistance development. Suppression of specific activities in synergism bioassays with AChE in chlorpyriphos + TPP treatment (9.32-fold), GST in chlorpyriphos + DEM (4.78-fold) and CarE in quinalphos + TPP (5.15-fold) highlighted the involvement of multiple detoxification enzymes conferring resistance to organophosphates. Reduced activity of MFO in case of lambda-cyhalothrin + PBO (5.35-fold), CarE in case of cypermethrin + TPP (7.36-fold) and 3.60-fold reduction in MFO in case of cypermethrin + PBO highlighted the role of esterases and MFOs towards resistance development against synthetic pyrethroids.
Location: T E 15 New Biology building
Literature cited 1: Brattsten, L. B., Potential role of plant allelochemicals in the development of insecticide resistance. In Novel Aspects of Insect Plant Interactions (eds Barbosa, P. and Letourneau, D. K.), Wiley, New York, 1986, pp. 313–348. Arthropod pesticide resistance database, 2017; http://www.pesticideresistance.com (accessed on 16 May 2017).
Literature cited 2: Dhir, B. C., Mohapatra, H. K. and Senapati, B., Assessment of crop loss in groundnut due to tobacco caterpillar, Spodoptera litura (F.). Indian J. Plant Prot., 1992, 20, 215–217. Qin, H., Ye, Z., Huang, S., Ding, J. and Luo, R., The correlations of the different host plant with preference level, life duration and survival rate of Spodoptera litura Fabricius. Chin. J. Eco.-Agric.,2004, 12, 40–42. (Original not seen. Cited by Ahmad, M., Sayyed, A. H., Crickmore, N. and Saleem, M. A.). Pest Manage. Sci.,2007, 63, 1002–1010).

ID: 63195
Title: Estimation of regional groundwater discharge and baseflow contribution in northern stretch of the Yamuna River system of Delhi
Author: Aryaman Jain and Shashank Shekhar
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (4) 660-664 (2019)
Subject: Estimation of regional groundwater discharge and baseflow contribution in northern stretch of the Yamuna River system of Delhi
Keywords: Baseflow, flownets, floodplain, regional groundwater discharge, river system
Abstract: Urban agglomerations in India of late have started facing drinking and domestic water scarcity. The city state of Delhi has witnessed accelerated urbanization and an exponential growth in population. In this context, it is desired to locate sustainable groundwater resources in Delhi. This communication examines the northern stretch of the Yamuna floodplain system in Delhi with respect to source sustainability. An aquifer can sustain extensive exploitation only if it is replenished regularly. Though the river floodplain system gets recharged by monsoon flooding, the recharged water may not sustain the source aquifer until the end of summer. Thus before exploitation all floodplains have to be examined vis-à-vis regional groundwater dynamics. In this context it was found that the floodplain system in the northern stretch of River Yamuna receives considerable regional groundwater flow. Some of this also contributes to river flow. The present study has estimated regional groundwater flow in this aquifer stretch of the Yamuna river system as 10,513,460 m3 /yr (~11 MCM/yr). Besides, the yearly baseflow contribution to the Yamuna in the study area has been estimated as 518,472 m3 /yr (~0.5 MCM/yr).
Location: T E 15 New Biology building
Literature cited 1: Shekhar, S., An approximate projection of availability of the fresh groundwater resources in the South West district of NCT Delhi, India: a case study. Hydrogeol. J., 2006, 14(7), 1330–1338. Chatterjee, R., Gupta, B. K., Mohiddin, S. K., Singh, P. N., Shekhar, S. and Purohit, R., Dynamic groundwater resources of National Capital Territory, Delhi: assessment, development and management options. Environ. Earth Sci., 2009, 59(3), 669–686
Literature cited 2: Sarkar, A., Ali, S., Kumar, S., Shekhar, S. and Rao, S. V. N.,Groundwater environment in Delhi, India. In Groundwater Environment in Asian Cities: Concepts, Methods and Case Studies, Butterworth-Heinemann, Elsevier, B.V., 2016, pp. 77–108. Shekhar, S. and Prasad, R. K., The groundwater in Yamuna flood plain of Delhi (India) and the management options. Hydrogeol. J., 2009, 17, 1557–1560.

ID: 63194
Title: Determination of the critical span for a large-caving above a mined-out area
Author: Haiying Fengyu Ren , Yunfeng Zhao and Sitong Ren
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (4) 654-660 (2019)
Subject: Determination of the critical span for a large-caving above a mined-out area
Keywords: Arch theory, critical span, large caving, mined out area, subsidence.
Abstract: An analytical model presented here was developed to determine the critical span for a large caving that developed above the mined-out area in Xiaowanggou Iron Mine. The model development is based on field observations measurements, examination of the characteristics of overlying rock masses, research on caving process and application of simple loading conditions in the gravitational field. Key input parameters were determined and utilized to predict the critical span for a large caving. The difference between the predicted and measured values is less than ±3%. Results from the analytical model and field measurements have demonstrated that the proposed model can be used to predict the timing and crater location of large-caving and it forms the theoretical basis for mitigation of risk associated with a large caving in a safe and economical manner.
Location: T E 15 New Biology building
Literature cited 1: Li, Q. W., Ren, F. Y., Hou, J. G. and Li, J., Regularity of roof-fall in the southern worked-out zone of Xishimen Iron Ore Mine. China Min. Mag., 2001, 3, 44–46. Zhou, Z. H., Ren, F. Y., Yuan, G. Q. and Ma, W. F., Application of induced caving technique in goaf treatment. Met. Mine., 2005, 12, 73–74.
Literature cited 2: Ren, F. Y., Li, H. Y., Ren, M. L., Liang, B. D. and Hu, F. Y., Technique of induced caving on adjacent mined-out areas in Shujigou Iron Mine. China Min. Mag., 2012, 1, 378–380. Ren, F. Y., Han, Z. Y., Zhao, E. P. and Wang, W. J., Induced caving technique and its application in Beiminghe Iron Mine. Min. Res. Develop., 2007, 1, 17–19.

ID: 63193
Title: Pesticides use and its effect on soil bacteria and fungal populations, microbial biomass carbon and enzymatic activity
Author: Sanjay Arora, Sumitra Arora, Divya Sahni, M. Sehgal , D. S. Srivastava and A. Singh
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (4) 643-649 (2019)
Subject: Pesticides use and its effect on soil bacteria and fungal populations, microbial biomass carbon and enzymatic activity
Keywords: Dehydrogenase, fungal population, microbial biomass C, pesticides, soil bacteria.
Abstract: The indiscriminate use of chemical pesticides disturbs the soil environment, thereby affecting flora and fauna including soil microflora, and also the physicochemical properties of the soil, viz. pH, salinity, alkalinity, leading to poor soil fertility. With the application of pesticides, possibilities exist that these chemicals may exert certain effects on non-target soil microorganisms. The soil microbial biomass plays an important role in the soil ecosystem, where they fulfill a crucial role in nutrient cycling and decomposition. A series of field experiments were conducted at farmer’s field at Sitapur, UP with different modules of integrated pest management (IPM) including use of safe formulations. The impact of application of these pesticides on the soil properties including soil microbial populations, microbial biomass carbon and enzymatic activity was assessed. It was observed that soil microbial biomass C content and dehydrogenase activity was influenced by IPM interventions.
Location: T E 15 New Biology building
Literature cited 1: Srinivasan, G., Panel for reduced use of chemical pesticides. Hindu Business Line, 5 November 1997. Dhaliwal, G. S. and Pathak, M. D., Pesticides in the developing world: a boon in ban. In Pesticides: their Ecological Impact in Developing Countries (eds Dhaliwal, G. S. and Singh, B.), Commonwealth Publishers, New Delhi, 1993
Literature cited 2: Sharma, M. C., Biopesticides: potential for Indian agriculture. In Biotechnological Strategies in Agro-Processing (eds Marwaha, S. S. and Arora, J. K.), Asia Tech, New Delhi, 2003, pp. 105– 112. Kalia, A. and Gosal, S. K., Effect of pesticide application on soil microorganisms. Arch. Agro. Soil Sci., 2011, 57(6), 569–596.

ID: 63192
Title: Predicting the invasion potential of indigenous restricted mango fruit borer, Citripestis eutraphera (Lepidoptera: Pyralidae) in India based on MaxEnt modelling
Author: Jaipal Singh Choudhary Santosh S. Mali , Babasaheb B. Fand and Bikash Das
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (4) 636-642 (2019)
Subject: Predicting the invasion potential of indigenous restricted mango fruit borer, Citripestis eutraphera (Lepidoptera: Pyralidae) in India based on MaxEnt modelling
Keywords: Climate change, mango, invasive pest, species distribution models.
Abstract: The mango fruit borer, Citripestis eutraphera (Meyrick), originally confined to the Andaman Islands, is a recent invasion in mainland India. With changes in climatic conditions, the pest is likely to spread in other major mango-growing regions of the country and can pose serious threats to mango production. In this backdrop, the present study examines the impact of climate change to develop spatio-temporal distribution of invasive C. eutraphera in India using the maximum entropy (MaxEnt) modelling approach. Integration of point data on current occurrence of pest and corresponding bioclimatic variables in MaxEnt were used to define the potential distribution in India and mapped using spatial analysis tool in ArcGIS. The model framework performed well as indicated by high area under the curve (0.97) value. Jackknife test for estimating predictive power of the variables indicated that ‘isothermality’ and ‘temperature seasonality’ significantly affected C. eutraphera distribution. It was found that mango-growing pockets in the southwestern parts of Gujarat, as well as parts of Kerala and Tamil Nadu were moderately to highly suitable for C. eutraphera distribution in 2050 and 2070. The results of this study could be an important guide for selecting monitoring and surveillance sites and designing integrated pest management policies in the context of climate change against this invasive pest of mango.
Location: T E 15 New Biology building
Literature cited 1: Bradley, B. A., Blumenthal, D. M., Wilcove, D. S. and Ziska, L. H., Predicting plant invasions in an era of global change. Trends Ecol. Evol., 2010, 25(5), 310–318. Pimentel, D., In Biological Invasions: Economic and Environmental Costs of Alien Plant, Animal, and Microbe Species, CRC Press, Boca Raton, Florida, USA, 2011, 2nd edn, p. 463.
Literature cited 2: Mack, R. N., Simberloff, D., Lonsdale, W. M., Evans, H., Clout, M. and Bazzae, F. A., Biotic invasions: causes, epidemiology, global consequences, and control. Ecol. Appl., 2000, 10(10), 689–710. Soumya, B. R., Verghese, A., Kamala Jayanthi, P. D. and Jalali, S. K., Need to strengthen quarantine between Andaman and Nicobar Islands and mainland India. Curr. Sci., 2016, 111(11), 1753–1756.

ID: 63191
Title: Estimating elastic impedance from seismic inversion method: a study from Nova Scotia field, Canada
Author: S. P. Maurya
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (4) 628-635 (2019)
Subject: Estimating elastic impedance from seismic inversion method: a study from Nova Scotia field, Canada
Keywords: Elastic impedance, gas formation, modelbased inversion, overpressure zone.
Abstract: In the present study, elastic impedance (EI) inversion is performed to estimate subsurface elastic properties in inter-well regions. These elastic properties are helpful to discriminate gas-bearing formation from gas free formation, as well as overpressure zone. Seismic reflection data from the Penobscot Scotia shelf, Canada are used for the analysis which is performed in two steps. First, the method is tested with noise-free synthetic data, as well as with addition of 5%, 10%, 20% and 30% Gaussian noise. The analysis shows that efficacy of EI inversion decreases by 3.4% with addition of 30% noise in the data compared to noise-free data. In the second step, EI inversion is applied to the real data and variation of EI is estimated for near- and far-angle stack gathers. The analysis demonstrates that the inverted results follow the well-log curve satisfactorily. The results also show higher resolution images for the far-stack data compared to the near stack data. Incidentally, it is noticed that the area of study does not contain any major gas or overpressure zones. As of now, the analysis has been performed for small datasets of the region. Robustness of the method needs to be tested with more data from other parts of the region as well.
Location: T E 15 New Biology building
Literature cited 1: Maurya, S. P. and Sarkar, P., Comparison of post stacks seismic inversion methods: a case study from Blackfoot Field, Canada. IJSER, 2016, 7(8), 1091–1101. Maurya, S. P. and Singh, K. H., LP and ML sparse spike inversion to characterize reservoir: a case study. In 77th EAGE Conference and Exhibition, Madrid, Spain, 2015; doi:10.3997/2214-4609. 201412822.
Literature cited 2: Maurya, S. P. and Singh, K. H., Band limited impedance inversion of Blackfoot field, Alberta, Canada. J. Geophys., 2017, 38(1), 57–61. Maurya, S. P., Singh, K. H. and Singh, N. P., Qualitative and quantitative comparison of geostatistical techniques of porosity prediction from the seismic and logging data: a case study from the Blackfoot Field, Alberta, Canada. Mar. Geophys. Res., 2018, pp. 1–21; http://doi.org/10.1007/s11001-018-9355-6.

ID: 63190
Title: Finite element-based simulation and analysis of dragline bucket in static and dynamic loading condition
Author: Shah Fateh Azam and Piyush Rai
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (4) 612-619 (2019)
Subject: Finite element-based simulation and analysis of dragline bucket in static and dynamic loading condition
Keywords: Dragline bucket, loading conditions, static and dynamic.
Abstract: Draglines are bulky and expensive machines widely utilized in opencast mines for overburden stripping. Due to tedious working conditions, a variety of fatigue failures in dragline components are common. Bucket is one of the main components of dragline, and it is a source of external load on the machinery than its interaction through broken rock material directly. Hence, dragline buckets are the most vulnerable components of wear, tear and related failures. This article analyses the von Mises stresses using the finite element method (FEM) under the static and dynamic loading conditions. In this study, the three-dimensional solid bucket models were developed in AUTO CAD and were investigated for stress, deformation, and safety factor on the dragline bucket under static and dynamic loading conditions using the ANSYS 18 software. FEM outcomes have been highlighted from teeth, the arc of anchors and hitch elements have a maximum value of stress and a minimum value of safety factor under various loading conditions. The purpose of this study was to prognosticate the bucket failure, the strength of bucket teeth and identify the sensitive areas of the dragline bucket.
Location: T E 15 New Biology building
Literature cited 1: Azam, S. F. and Rai, P., Modelling of dragline bucket for determination of stress. ASME J., 2018, 78, 392–402. Golbasi, O. and Demirel, N., Investigation of stress in an earthmover bucket using finite element analysis: A generic model for draglines. J. S. Afr. Inst. Min. Metall., 2015, 115(7), 623–628.
Literature cited 2: Abo-Elnor, M., Hamilton, R. and Boyle, J. T., Simulation of soil–blade interaction for sandy soil using advanced 3D finite element analysis. Soil Till. Res., 2004, 75(1), 61–73. Costello, M. and Kyle, J., A method for calculating static conditions of a dragline excavation system using dynamic simulation. Math. Comput. Model., 2004, 40(3–4).

ID: 63189
Title: Adsorption of Orange-G dye by the dried powdered biomass of Chlorella vulgaris Beijerinck
Author: Sunil Kumar, Amrik Singh Ahluwalia and Mayank Uday Charaya
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (4) 604-611 (2019)
Subject: Adsorption of Orange-G dye by the dried powdered biomass of Chlorella vulgaris Beijerinck
Keywords: Adsorption, Chlorella vulgaris, dyes, infrared spectrum.
Abstract: Decolourization potential of microalgal biomass of an unicellular green alga (Chlorella vulgaris) was studied using different concentrations of Orange-G dye. Several parameters were also optimized for better removal of the tested dye from its aqueous solution. Langmuir and Freundlich models were tested for equilibrium studies and experimental data of the present study are better explained by the Freundlich model. FTIR data showed that five functional groups were probably involved in the adsorption of the dye. The biosorption process using algae (including C. vulgaris) offers an excellent biosystem for the remediation of final discharge of textile effluents.
Location: T E 15 New Biology building
Literature cited 1: Ramachandra, T. V., Rajasekar Murthy, C. and Ahalya, N., Restoration of Lakes and Wetlands, Allied Publishers, India, 2002, p. 426. Singh, U. B., Ahluwalia, A. S., Jindal, R. and Sharma, C., Water quality assessment of some freshwater bodies supporting vegetation in and around Chandigarh (India), using multivariate statistical methods. Water Qual. Exp. Health, 2013, 5, 149–16
Literature cited 2: Mohan, S. V., Rao, C. N., Prasad, K. K. and Karthikeyan, J.,Treatment of simulated Reactive Yellow 22 (azo) dye effluents using Spirogyra species. Waste Manage., 2002, 22, 575–582. Dotto, G. L., Lima, E. C. and Pinto, L. A., Biosorption of food dyes onto Spirulina pletensis nanoparticles: equilibrium isotherm and thermodynamic analysis. Bioresour. Technol., 2012, 103, 123–130.

ID: 63188
Title: Introgression of semi-dwarf gene in Kalanamak rice using marker-assisted selection breeding
Author: Deepti Srivastava, Md Shamim, Anurag Mishra, Prashant Yadav, Deepak Kumar, Pramila Pandey, Nawaz A. Khan and Kapildeo N. Singh
Editor: S.K.Satheesh
Year: 2019
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 116 (4) 597-603 (2019)
Subject: Introgression of semi-dwarf gene in Kalanamak rice using marker-assisted selection breeding
Keywords: Aromatic rice, grain quality, lodging resistance, semi-dwarf gene.
Abstract: Kalanamak is an important aromatic rice variety in India. Tall stature of Kalanamak causes lodging due to which its yield and other characters severely declines. Introgression of the semi-dwarfing gene (sd1) from CSR10 was performed with the help of marker assisted breeding. Backcross-derived plants were characterized for semi-dwarf nature. Improved Kalanamak lines were analysed for the sd1 gene and to check the presence of aroma, sensory analysis test and amplification with betaine aldehyde dehydrogenase (badh 2) derived primer was performed. Improved versions of Kalanamak rice lines were either on par or superior in terms of yield, grain type and cooking quality with reduced height implicating the potentiality of marker-assisted backcross breeding for improvement of this rice variety.
Location: T E 15 New Biology building
Literature cited 1: Singh, R. K., Singh, U. S., Khush, G. S., Rohilla, R., Singh, J. P., Singh, G. and Shekhar, K. H., Small and medium grained aromatic rices of India. Aromatic Rice Science, Enfield Publishers Inc, USA, and Oxford and IBH Publishing Co, New Delhi, 2005, pp. 155–177. Spiemeyer, W., Ellis, M. H. and Chandler, P. M., Semidwarf (sd-1), ‘green revolution’ rice, contains a defective gibberellin 20-oxidase gene. Proc. Natl. Acad., USA, 2002, 99, 9043–9048.
Literature cited 2: Lin, Y. R. et al., Mapping of quantitative trait loci for plant height and heading date in two inter-sub specific crosses of rice and comparison across Oryza genus. Bot. Stud., 2011, 52, 1–14. Acquino, R. C. and Jennings, P. R. Inheritance and significance of dwarfism in indica rice variety. Crop Sci., 1966, 6, 551–554.