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ID: 62799
Title: Al2O3-coated Fe3O4/grapheme/TiO2 hybrid nanocomposite mixture as anode material for lithium-ion batteries
Author: K.Sarvanakumar, J.Samson Issac and R.Rajesh
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (2) 177-183 (2022)
Subject: Al2O3-coated Fe3O4/grapheme/TiO2 hybrid nanocomposite mixture as anode material for lithium-ion batteries
Keywords: Electric vehicles, graphite anode, hybrid nanocomposite, lithium-ion batteries, microwave-assisted hydrothermal process.
Abstract: Lithium-ion batteries are efficient energy storage devices in electric vehicles (EVs). Graphite is used in these batteries as an anode material because of its high stability and good conductivity. However, the need for stability, safety and reversibility is increasing rapidly in commercial EVs. In this study, a Fe3O4/TiO2/grapheme hybrid nanocomposite coated with Al2O3 has been developed using the microwave-assisted hydrothermal process with graphite as the anode material for lithium-ion batteries. This combination of nano-materials increases the stability of the anode, electrical conductivity and electrochemical performance. The Fe3O4/grapheme/TiO2 nanocomposite results in a reversible capacity of 920 m Ahg-1 after analyzing it in 160 cycles at a current density of 100 m Ahg-1. The nano-composite provides excellent long-term cycle stability of 650 m Ah g-1 after 160 cycles. This shows an ultra-high high-rate capability of 75 mAh g-1 at 150°C.The grapheme and Fe3O4 /grapheme /TiO2 hybrid nanocomposite mixture coated with Al2O3 exhibits good nonlinear cumulative effects, stability, high reversibility, and increased ultrahigh rate capability.
Location: T E 15 New Biology building
Literature cited 1: Zheng, M., Li, L. Gu, P., Lin, Z., Xue, H. and Pang, H., A glassy carbon electrode modified with ordered nanoporous CO3O4 for non-enzymatic sensing of glucose. Microchim. Acta, 2017, 184(3), 943-949. Wang, X., Wei, X. And Dai, H., Estimation of state of health of lithium-ion batteries based on charge transfer resistance considering different temperature and state of charge. J, energy Storage, 2019, 21, 618-631.
Literature cited 2: Zhang, J. et al., MOF-derived transition metal oxide encapsulated in carbon layer as stable lithium-ion battery anodes. J. Alloys Compd, 2019, 797, 83-91. Shen, L., Che, Q., Li, H. and Zhang, X., Mesoporous NiCO2O4 nanowire arrays grown on carbon textiles as binder-free flexible electrodes for energy storage. Adv. Funct. Mater., 2014, 24(18), 2630-2637.

ID: 62798
Title: A comprehensive analysis of health risk due to natural outdoor gamma radiation in southeast Haryana, India
Author: Sandeep Singh Duhan, Pradeep Khyalia and Jitender Singh Laura
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (2) 169-176 (2022)
Subject: A comprehensive analysis of health risk due to natural outdoor gamma radiation in southeast Haryana, India
Keywords: Annual effective dose, cancer risk, cosmic rays, Gamma radiation, heavy metals
Abstract: A systematic study of background radiation in southeast Haryana, India, i.e., the Jhajjar, Sonipat and Rohtak districts, was initiated to establish reliable baseline data on the background radiation level of eh region. Worldwide many areas have been found with high background gamma radiation, leading to several types of disorders in human beings. So, the present study was carried out as a precautionary step. There are two natural sources of ionizing radiation-cosmic and terrestrial. Isotopes of heavy elements and their decay products present in the Earth’s crust are the major sources of terrestrial radiation. A radiation survey meter was used for the analysis of gamma radiation. In total, 50 locations were chosen for the survey. Gamma radiations showed variation from 82 to 184 nSv/h, with the mean value of 131.64±5.56 nSv/h. An independent t-test at a significance level of 5% was applied for comparison. Annual effective dose and excess lifetime cancer risk were computed to determine the number of cancer tests due to outdoor radiation.
Location: T E 15 New Biology building
Literature cited 1: Sonkawade, R.G., Kant, K., Muralithatr,S., Kumar,R. and Ramola,R.C., Natural radioactivity in common building construction and radiation shielding materials. Atmosp.Environ.,2008, 42(9), 2254-2259. Zakaly, H.M., Uosif, M.A., Madkour, H., Tammam, M., Issa,S., Elsaman, R., and El-Taher, A., Assessment of natural radionuclides and heavy metal concentrations in marine sediments in view of tourism activities in Hurghada City, Northern Res Sea,Egypt.J.Phys.Sci., 2019, 30 (3), 21-47.
Literature cited 2: Mahur,A.K., Kumar, R., Sonkawade, R.G., Sengupta, D. and Rajendra, P., Measurement of natural radioactivity and radon exhalation rate from rock samples of Jaduguda Uranium Mines and its radiological implications. Nucl. Instrum. Methods Phys. Res. B, 2008, 266, 1591-1597. Pashazadesh, A.M., Aghajanai, M., Nabipour, I. And Assadi, M., Annual effective dose from environmental gamma radiation in Bushehr city. J. Environ. Health Sci. Eng., 2014, 12(1), 1-4.

ID: 62797
Title: Epigenetic changes in eusocial insects which affect age and longevity
Author: Srdana Dordievski, Tatjana V.Celie, Elvira L. Vukasinovic, Danijela Kojieand Jelena Purac.
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (2) 154-159 (2022)
Subject: Epigenetic changes in eusocial insects which affect age and longevity
Keywords: DNA Methylation, histone modification, in-vertebrates, non-coding RNA
Abstract: Ageing is a complex process common to all living organisms, influenced by different environmental and genetic factors which are difficult to understand. Epigenetic modifications such as DNA methylation, histone post translational modification and non-coding RNA affect ageing. Eusocial insects provide an ideal platform for analysing the impact of epigenetic changes on ageing due to their phenotypic plasticity. This study summarizes most of the data published so far on epigenetic changes during ageing in eusocial insects.
Location: T E 15 New Biology building
Literature cited 1: Moskalev, A.A., Aliper, A.M., Smit-McBride, Z., Buzdin, A. and Zhavoronkov, A., Genetics and epigenetics and aging and longevity. Cell Cycle, 2014, 13, 1063-1077. Pal, S. and Tyler, J.K., Epigenetics and aging.Sci.Adv. 2016, 2, 1-19.
Literature cited 2: Kozeretska, I.A., Serga, S.V. Koliada, A.K.and Vasiserman, A.M. Eopigenetics of aging and longevity. Cell cycle, 2014, 13, 1063-1077. Vaiserman, A.M., Lushchak, O.V., and Koliada, A.K., Epigenetics, A.M.of longevity in social insects.Epigenet.Aging Longev, 2018, 4, 271-289.

ID: 62796
Title: Saccogyna darjeelingensis (Saccogynaceae: Marchantiophyta) –a new species from Eastern Himalaya, India with a generic record for Indian Bryoflora
Author: Monalisa Dey, Shuvadeep Majumdar
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (2) 145-147 (2022)
Subject: Saccogyna darjeelingensis (Saccogynaceae: Marchantiophyta) –a new species from Eastern Himalaya, India with a generic record for Indian Bryoflora
Keywords: Saccogyna darjeelingensis, Marchantiophyta, Eastern Himalaya, India, Indian Bryoflora
Abstract: Soderstorm et al. Have listed three species of the genus Saccogyna Dumort, belonging to the monogeneric family Saccogynaceae, viz. Saccogyna subacuta steph. And Saccogyna viticulosa (L) Dumort. However, Grolle and later Blackstack recognized only one species (S. viticulosa) under the genus Saccogyna. Grolle and kept S.Subacuta under a synonym of Saccogynidium caldense (Angstr).Grolle and kept S.subacuta under doubtful taxon as the type specimens of S.subacuta examined and present in Stephani’s herbarium(G) did not belong to Saccogyna but a member of Southbaceae. Grolle’s concept of only one taxon is followed here.
Location: T E 15 New Biology building
Literature cited 1: Soderstorm, L. et al.Phytokeys, 2016, 59, 1-828. Grolle, R.JHattori Bot.Lab.1960,23, 41-67.
Literature cited 2: Blackstock, T.H.J.Bryol.2020, 42(2), 382-385. Stephani, F., Species Hepaticarum VI, Geneve & Bale: Georg et Cie, Lyon, meme Maison, 1917-1924.

ID: 62795
Title: Barren Island Volcano: recent field findings
Author: Goutham Krishna Teja Gunda, A.Sridhar, Mamta Chauhan, Mijanur Ansary, Prakash Chauhan, R.Sudhakar Goud, G.Udaya Laxmi, S.Balaji
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (2) 143-144 (2022)
Subject: Barren Island Volcano: recent field findings
Keywords: Barren Island, Volcano
Abstract: Barren island Volcano (BIV), the only active stratovolcano in South Asia, is part of the Neogene Inner Volcanic Arc (NIVA) situated in the Indian territory at ~135 km to the northeast of port Blair, the capital of Andaman & Nicobar (A&N) Islands. BIV is an uninhabitated stratovolcano with an elevation of ~350 m amsl and is located on seismically active subduction zones wherein the Indian Plate subducts beneath the Burmese Plate along the Andaman Trench. The currently exposed BIV cone with multiple ridges is just the upper part of the volcano, whereas almost 90% of it is submerged in water, as revealed by recent bathymetry.
Location: T E 15 New Biology building
Literature cited 1: Sheth, H.C., Ray J.S., Kumar, A., Bhutani, R. and Awasthi, N.J. Volcanol. Geotherm. Res., 2011, 202, 73-82. Sheth, H., J. Volcanol. Geotherm. Res., 2014, 289, 64-80.
Literature cited 2: Gunda, G.K. et al., Curr. Sci., 2021, 121 (4), 529-538. Gunda, G.K.T., Ray, P.K.C., Chauhan, M., Chauhan, P. and Balaji, S.J. Earth Syst.Sci., 2021, 130 162): doi: 10.1007/s12040-021-01624-z.

ID: 62794
Title: Overcoming the barriers of utilization of mica waste as a potassic fertilizer
Author: Khusboo Rani and Abhinash Das
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (2) 141-142 (2022)
Subject: Overcoming the barriers of utilization of mica waste as a potassic fertilizer
Keywords: Potassic fertilizer, Utilization of mica
Abstract: Mica waste generated after cleaning and processing mica ore contains about 8-10% potassium (K). Its potential as an alternative to costly potassic fertilizers is currently being exploited, especially in India, where the entire demand for K fertilizers is met through import. Suitable modifications of mica waste by chemical and biological means may prove to be an agricultural resource. However, it’s practical utilization is obstructed by certain challenges, as discussed here, which need to be addressed in order to reduce Indi’s dependency on imports of K fertilizes and take a step forward towards a self-reliant India.
Location: T E 15 New Biology building
Literature cited 1: IBM, Indian Minerals Yearbook 2018 (Part-III: Mineral Reviews), Minor Minerals 30.16 Mica (Final Release), Ministry of Mines Indian Bureau of Mines, Government of India, Indira Bhavan, Civil Lines, Nagpur,2019, pp.1-5,7th edn. Basak, B.B., Nat.Resour.Res. 2019, 28, 953-965.
Literature cited 2: Pramanik, P., Kalita, C., Borah, K.and Kalita, P., Agroecol.Sustain.Food Syst., 2021, 4, 732-774. Ahmad, A., Chattopadhyay, N., Mandal, J., Mandal, N. and Ghosh, M.J., Indian Soc.SoilSci, 2020, 68(4), 431-442.

ID: 62793
Title: Rainwater management for sustainable production of citrus in central India
Author: Pravukalyan Panigrahi
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (1) 100-104 (2022)
Subject: Rainwater management for sustainable production of citrus in central India
Keywords: Citrus, rainwater harvesting, micro-irrigation, water productivity, yield
Abstract: A study was conducted involving (i) continuous trench (CT), (ii) CT with rainwater harvesting tank (RWHT) and basin irrigation (DRI) to identify a suitable rainwater management strategy for citrus orchards in central India. CT with RWHT and DRI was found most suitable under which fruit production, net profit and economic water productivity were enhanced by 3.19, .98 and 2.30 times respectively, compared with rainfed treatment. The energy use efficiency improved by 87% with a 49% increase in suitability yield index in CT with RWHT and DRI than the rainfed treatment.
Location: T E 15 New Biology building
Literature cited 1: Ghosh, S.P., Citrus Fruits, Indian Council for Agricultural Research, New Delhi, 2007. Panigrahi, P., Srivastava, A.K. and Huchche, A.D., Influence of in situ soil and water conservation measures on performance of Nagpur mandarin. J. Agric. Eng. 9ISAE), 2009, 46 (3), 37-40.
Literature cited 2: Mohanty, S., Sonkar, R.K. and Marathe, R.A., Effect of mulching on Nagpur mandarin cultivation in drought prone region of central India. Indian J. Soil Conserv., 2002, 30 (3), 286-289. Panigrahi, P. and Srivastava, A.K., Integrated use of water and nutrients trough drip irrigation in Nagpur mandarin. J. Agric. Eng. (ISAE), 2011, 48 (3), 44-51.

ID: 62792
Title: Introduction of Bambusa tulda Roxb.along with shifting cultivation as a sustainable bioresource in Northeast India
Author: Pangwan M.Konyak
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (1) 97-100 (2022)
Subject: Introduction of Bambusa tulda Roxb.along with shifting cultivation as a sustainable bioresource in Northeast India
Keywords: Bambusa tulda Roxb, bamboo products, shifting cultivation, soil erosion, sustainable bioresource
Abstract: Bambusa tulda Roxb (synonym Dendrocalamus tulda), commonly known as Bengal bamboo or Indian timber bamboo, is a tropical species found in Northeast (NE) India of length up to 25 m (80 ft) having a thick hollow stem and clump. The length, strength, rapid growth and availability in huge clusters make the species an excellent choice for many domestic and commercial purposes. It has considerable usage in handicrafts and construction. The tender shoots are also being harvested by many tribals of NE India as a food delicacy. The present study focuses on introducing this bamboo along with shifting cultivation as a counter-measure to soil erosion. The bamboo species can be cultivated either along the edge of a field during crop cultivation or inside the field after crop harvest to avoid competition. Either way, the bamboo species can grow in abundance and prevent soil erosion, besides providing several bamboo products which can be a sustainable bioresource. Vegetative method of bamboo propagation involves cutting the premature side stem along with its cluster. The traditional practice also includes cutting down and burning the bamboo to enrich the soil with phosphate before chilli cultivation.
Location: T E 15 New Biology building
Literature cited 1: Walling, M. and Puro, N., Bamboo diversity and utilization in Mokokchung District, Nagaland.Int.J.Agric.Environ.Res. 2018, 4(9), 14-25. Naithani, H.B., Contribution to the taxonomic studies of Indian bamboos. Ph.D. thesis, H.N.B. Garhwal University, Srinagar, Garhwal, 1993.
Literature cited 2: Ram, N., Singh, L. and Kumar, P., Bamboo plantation diversity and its economic role in North Bihar, India. Nat. Sci, 2010, 8(11), 111-115. Lobovikov, M., Paudel, S., Piazza, M, and Wu, H.R., World bamboo resources: a thematic study prepared in the frame work of the global forest resources assessment .Food and agriculture Organization of the United Nations, Rome, Italy, 2007.

ID: 62791
Title: Identification of smectites by IR and LIBS instruments of SuperCam Suite on board Mars 2020 Perseverence rover: comments on the Non-retrieval of First Drill Core
Author: Subham Sarkar, Narayan Bose,Satadru Bhattacharya and Subhash Bhandari
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (1) 93-96 (2022)
Subject: Identification of smectites by IR and LIBS instruments of SuperCam Suite on board Mars 2020 Perseverence rover: comments on the Non-retrieval of First Drill Core
Keywords: Biosignature, drill core, Jezero crater, rover, smectites, spectroscopic analysis.
Abstract: Preliminary investigation on the Infrared spectrometer on onboard Mars 2020 Perseverance rover show the presence of Fe-/Mg-smectite minerals near the first drilling site, Roubion. Laser-Induced Breakdown Spectrometer data show characteristics emission peaks for O, H and the major constituent elements of smectites, viz. Si, Fe, Mg. etc. These minerals suggest aqueous alteration of the basaltic flour of the Jezero crater. The mechanically weak nature of this basalt weathering layer holds clues to the non-retrieval of the first drill core. Water confinement capacity and high porosity-permeability make the smectite-rich rock units a good host for preserving macro-and microscopic biosignatures.
Location: T E 15 New Biology building
Literature cited 1: Farley, K. A .et al. Mars 2020 mission overview. Space Sci.Rev. 2020, 216, 1-41. Schon, S.C., Head, J.W. and Fassett, C. I, an overfilled lacustrine system and progradational delta in Jezero crater, Mars: implications for Noachian climate.Planet.Spce Sxci., 2012, 67(1), 28-45.
Literature cited 2: Goudge, T.A., Mustard ,J.F., Head, J.W., Fassett, C.I. and Wiseman, S.M., Assessing the mineralogy of the watershed and fan deposits of the Jezero crater paleolake system,Mars.J.Geophys.Res.-Planets,2015, 120(4), 775-808. Horgan, B.H., Anderson, R.B., Dromart, G., Amador, E.S. and Rice, M.S., The mineral diversity of Jezero crater: evidence for possible lacustrine carbonates on Mars.Icarus, 2020, 339,113526.

ID: 62790
Title: Effect of post-anthesis high temperature on seed longevity and vigour in wheat (Triticum aestivum L.)
Author: Archana Sanyal, Monika A.Joshi and Bhoopal Singh Tomar
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (1) 87-91 (2022)
Subject: Effect of post-anthesis high temperature on seed longevity and vigour in wheat (Triticum aestivum L.)
Keywords: Climate change, high temperature, post-anthesis, seed quality, vigour, wheat
Abstract: The effect of post-anthesis high temperature on seed quality was studied in for promising genotypes (T2003R, R902, R958 and R965) of wheat (Triticum aestivum L) under a controlled environment ( 30°/25°C day/night temperature from 81 days after sowing to harvest maturity).Seed mass, density, seed membrane development, ability to germinate, subsequent seed longevity and seedling vigour declined in the seeds harvested from high temperature after post-anthesis, resulting in early maturation and poor desiccation tolerance at harvest maturity. Genotype R 965 showed greater resilience to damage compared to the other genotypes.
Location: T E 15 New Biology building
Literature cited 1: IPCC, Climate change 2014: impacts, adaptation, and vulenerability.Part A: Global and sectoral aspects. In contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, UK, 2014. IPCC, Climate change 2013: the physical science basis. In Contribution of Working Group1 to the Fifth Assessment Report of the Intergovernmental Panel on Climate Climate Change, Cambridge University Press, Cambridge, UK, 2013.
Literature cited 2: http://www.fao.org/faosataten/#data/QC (accessed on 10 September 2021). Rezaei, E.E., Webber, H, Gaiser, T., Naab, J.and Ewert, F., Heat stress in cereals: mechanisms and modelling.Eur.J.Agron, 2015, 1 (64), 98-113.

ID: 62789
Title: Seasonal activity of Spodoptera frugiperda (J.E.Smith) in maize agroecosystem of South India
Author: Palam Pradeep, Sharanabasappa S.Deshmukh, H.G.Sannathimmappa, C.M. Kalleshwaraswamy and Dnyaneshwar M. Firake
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (1) 81-86 (2022)
Subject: Seasonal activity of Spodoptera frugiperda (J.E.Smith) in maize agroecosystem of South India
Keywords: Damage rating, fall armyworm, maize crop, pheromone trap catches, population fluctuation
Abstract: The fall armyworm (FAW), Spodoptera frugiperda (J.E.Smith), was first detected in India in 2018 and seriously threatened the maize crop. In South India, we studied the population dynamics of FAW moths and the damage caused by the larvae in maize fields from 2019 to 2020.In the kharif season, the highest male moth catches occurred in July while in rabi season, the highest catches occurred in November. It was found that the early whorl stage (EV-V6) of maize crop was susceptible to FAW due to its high larval load, whereas the late whorl stage (V7-VT) of the crop showed greater leaf damage in both years.
Location: T E 15 New Biology building
Literature cited 1: Sharanabasappa, D. et al., First report of the fall armyworm, Spodoptera frugiperda (J.E.Smith) (Lepidoptera: Noctuidae), an alien invasive pest on maize in India. Pest Manage.Hortic.Ecosyst. 2018, 24, 23-29. Firake, D.M. and Behere, G.T., Natural mortality of invasive fall armyworm, Spodoptera frugiperda (J.E.Smith) (Lepidoptera: Noctuidae) in maize agroecosystems of northeast India.Biol.Contol, 2020, 18, 1-11.
Literature cited 2: Prasanna, B.M. et al., Fall armyworm in Asia: A Guide for Integrated Pest Management ,International Maize and Wheat Improvement Center,Mexico,2021, 1st edn. Montezano, D.G. et al., Host plants of Spodoptera frugiperda (Lepidoptera: Noctuidae) in the Americas. Afr. Entomol., 2018, 26, 286-300.

ID: 62788
Title: Modelling freshwater plume in the Bay of Bengal with artificial neural networks
Author: Dhanya Sumangala, Apurva Joshi and Hari Warrior
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (1) 73-80 (2022)
Subject: Modelling freshwater plume in the Bay of Bengal with artificial neural networks
Keywords: Artificial neural networks, Bay of Bengal, freshwater plume, ocean modelling, multiple linear regression
Abstract: In spite of advanced modelling techniques, the current prediction of ocean parameters along the ocean costs remains a formidable challenge. The traditional methods of using mass and momentum equations to solve the physics of flow have helped us understand the oceans better, but their accuracy remains a problem. This article examines the ability of Delft3D to study freshwater plumes along the northern Bay of Bengal (BoB).Whereas the near shelf is primarily driven by tides and local winds, the far shelf is primarily driven by tides and local winds, the far shelf is primarily driven by tides and local winds, the far shelf is influenced by the freshwater-driven density circulation and monsoonal ocean currents. The prediction of far shelf water is well represented by employing an artificial neural network. By tuning the parameters properly, we can better predict the freshwater currents in the BoB with a correlation of 0.957 and 0.986 for u and v velocities respectively.
Location: T E 15 New Biology building
Literature cited 1: Burchard, H., Petersen, O. and Rippeth, T.P., Comparing the performance of the Mellor-Yamada and k-e two-equation turbulence models. J. Geophys. Res., 1998, 103(C5), 10543-10554. Burchard, H. and Petersen, O., Models of turbulence in the marine environment –a comparative study of two-equation turbulence models.J.Mar.Syst., 1999, 21 (1-4), 29-53.
Literature cited 2: Rao, R. and Sivakumar, R., Seasonal variability of sea surface salinity and salt budget of the mixed layer of the North Indian Ocean.J.Geophys.Res., 2003, 108(C1), 9-14. Charhate, S.B., Deo, M.C. and Sanilkumar,V., soft and hard computing approaches for real-time prediction of currents in a tide-dominated coastal area.J. Eng.Marit. Environ.,2007, 221, 121-130.

ID: 62787
Title: Rarity analysis of an endangered tropical tree species of the Western Ghats, India
Author: K.Subin P.A.Jose, and A.S. Vivek
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (1) 67-72 (2022)
Subject: Rarity analysis of an endangered tropical tree species of the Western Ghats, India
Keywords: Atuna indica, endangered species, phenologial changes, rarity analysis, reproductive biology
Abstract: The rarity of Atuna indica, an endemic and endangered tropical tree species of the Western Ghats, India has been analysed in this study. The phenology, floral biology, including pollen-ovule ratio, pollinators, fruit development and biotic interactions in natural dynamics were studied. Extreme reduction in the number of flowering individuals, microhabitat conditions, low fruit set, seed infestation and fruit predation were identified as the factors leading to rarity of the species in situ.
Location: T E 15 New Biology building
Literature cited 1: Ramasubbu, Rand Felix, I.D., Reproductive biology of Elaeocarpus blascoi Weibel, an endemic and endangered tree species of Palni Hills, Western Ghats, India. Curr.Sci. 2016, 110(2), 234-240. Kasi, K. S and Ramasubbu,R., Phonological patterns, frit predation, and seed dispersal in two endangered trees (Elaeocarpus spp.) of southern Western Ghats, India.J. Asia-Pac.Biodivers.,2021, 14, 275-282.
Literature cited 2: Dompreh, D., Michael, D.S., and Christopher, C.W., Reproductive biology of the critically endangered tropical tree. Tlbotiella gentii, South.For:J.For.Sci. 2015, 77(2), 153-163; doi:10.2989/20702620.2014.1001674. Evans, M.E., K. Eric. S.M. and Doria, R.G., Reproductive biology of three sympatric endangered plants endemic to Florida scrub.Biol.Conserv. 2003, 111, 235-246.

ID: 62786
Title: Green synthesis, Characterization and applications of TiO2 nanoparticles using aqueous extract of Erythrina variegate leaves
Author: Jayaram Mari Selvi, Mariappan Mugugalakshmi, Ponnusamy Sami, Mariappanm Gnanaprakash and R.Thanalakshmi
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (1) 59-66 (2022)
Subject: Green synthesis, Characterization and applications of TiO2 nanoparticles using aqueous extract of Erythrina variegate leaves
Keywords: Antibacterial activity, Erythrina variegate, Green synthesis, nanoparticles, photocatalytic efficacy, titanium dioxide
Abstract: Green synthesis is a simple, non-toxic-economical and eco-friendly approach for the synthesis of nanoparticles (NPs). The implementation of new technologies has led to the new area of nano revolution which unfolds the role of plants in bio-and green synthesis of nanomaterials. The plant extracts employed are neem, lemon, grass, aloe vera, Indian gooseberry, etc., focusing on the green chemistry principles. In the present work, NPs of titanium dioxide (TiO2) were synthesized using an aqueous extract of Erythrina variegate leaves as a capping agent. The leaf extract was utilized as a reducing agent for the conversion of metal precursors into metal-oxide NPs. E.variegata-mediated TiO2 NPs were characterized by UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction (XRD), energy-dispersive XC-ray spectroscopy and morphological studies were conducted by scanning electron microscopy. The UV-Vis absorption spectrum showed an absorption band at 317.6 nm, which supports the formation of TiO2 NPs. The optical band-gap energy was determined to be 2.35 eV. Further characterization by XRD supported the crystalinity and purity of the synthesized TiO2 NPs. These NPs may have effective dye degradation ability. The green-synthesized TiO2 NPs exhibited interesting photocatalytic efficacy on methylene blue dye under UV irradiation (using a multi-lamp photo reactor) and anti-bacterial activity against pathogenic organisms like Streptococcus, Staphylococcus, Escherichia coli and Pseudomonas aeruginosa.
Location: T E 15 New Biology building
Literature cited 1: He, J., Kunitake, T. and Nakao, A., Facile in situ synthesis of noble metal nanoparticles in porous cellulose fibers. Chem, Mater. 2003, 15, 4401-4406. Cai, J., Kimura, S., Wada, M. and Kuga, S. and Nanoporous cellulose as metal nanoparticles support. Biomacromolecues, 2009, 0, 87-94.
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ID: 62785
Title: Stable and upgraded horizontal datum for India
Author: Sujata Dhar, Nagarajan Balasubramanian, Onkar Dikshit and Harald Schuh
Editor: S.K.Satheesh
Year: 2022
Publisher: Current Science Association and Indian Academy of Sciences.
Source: ENVIS, CES & EWRG, CES
Reference: Current Science Vol. 123 (1) 43-51 (2022)
Subject: Stable and upgraded horizontal datum for India
Keywords: Geodetic survey, horizontal datum, reference frame, tectonic plate, three-dimensional positioning.
Abstract: A precise datum is significant as a starting or reference point for a multitude of activities like floodplain maps, property boundaries, civil surveys, precise agriculture, crustal deformation and climate studies, and works requiring consistent coordinates. A large nation like India, with almost its own tectonic plate, must have a well-defined network of horizontal datum for determining accurate and reliable 3D positioning for every user, anywhere and anytime. This article discusses the significance, methodology of realization and transformation, applications and static/dynamic coordinates for paving the way for a National Horizontal Datum in India.
Location: T E 15 New Biology building
Literature cited 1: DMA, Geodesy for the Layman.DMA Technical Report80-003, The defense Mapping Aency, 1983, pp.29-39. Lee, Y.J., Lee H.K. and Jung, G.H., Realization of New Korean Horizontal Geodetic Datum: GPS observation and network adjustment. In Proceedings of the Korean Institute of Navigation and Port Research Conference,Seoul,Korea,2006, pp.529-534.
Literature cited 2: Natioanl Research Council, Precise Geodetic Infrastructure: National Requirements for a shared Resource, National Academies Press, Washington, DC, USA, 2010. Schweiger, V., Lije, M. and Sarb, R., GNSS CORS-reference frames and services. In Proceedings of the Seventh FIG Regional Conference, Hanoi, Vietnam, October 2009.