Enter records

ID: 61267
Title: Evaluation of Genetic Diversity in Bamboo species through SDS-PAGE protein analysis.
Author: M.S.Bhandari, R.Kaushal, R.L.Banik and S.K.Tewari.
Editor: Kunal Satyarthi
Year: 2015
Publisher: Indian Council of Forestry Research & Education.
Source: Centre for Ecological Sciences
Reference: The Indian Forester Vol. 141 (8) 826-831 (2015)
Subject: The Indian Forester.
Keywords: Bamboo, Genetic diversity, Electrophoretic pattern, UPGMA and Jaccard ' s similarity coefficient.
Abstract: Bamboos serve as multipurpose forest grass species. The success of bamboo as commercially important forage species depends on the identification of genetically divergent materials of the plant and developing superior planting stock for the farmers. The phylogeny plays a crucial role in the evolution of species and superior germplasm. Twenty-two species of bamboo were evaluated for genetic diversity characterization through SDS-PAGE analysis. Based on electrophoretic pattern, banding pattern was established for 22 species. Also, on genetic diversity analysis, 22 species of bamboo were grouped into four clusters. Cluster IIBb had maximum of species (9), cluster IIBa and cluster IIAb had four species each, whereas, Cluster IIAa and cluster IA had maximum of two and three species respectively. UPGMA (Unweighed Paired Group Mean Cluster Analysis) inferred that among Bambusa genera; species B.bambusa, B.multiplex, B.Vulgaris, B.balcooa, B.tulda, B.nutans, B.polymorpha, B.nutans and B.pallida and among Dendrocalamus species D.hamiltonii, D.giganteus, D.membraneceous and D.longipathus were genetically similar having Jaccard ' s similarity coefficient ranged from 0.80-1.00.
Location: T E 15 New Biology Building.
Literature cited 1: Allard R.W .and Kaher A.L. (1971).Allozymes polymorphism in plant population.Stadler Symposium, 3:9-24. Boonsermuk S., Vongvjitra R.and Suebka A. (1992). Isozyme study of Dendrocalamus asper.Bamboo abstracts.INBAR Bamboo Information Centre China, Abstract 920006.
Literature cited 2: Crawford D.J. (1990).Enzyme electrophoresis and plant systematic. In: Isozymes in plant biology (Soltis DE, Soltis PS (eds).Dioscorides Press, Oregon,pp 146-164. Custodio H.M., Engle L.M. and Laude R.P. (1994).Genetic diversity of seed proteins in populations of mungbean, Vigna radiate (L.) Wilczek from the Philippines. Philippines J.Crop Sci., 19 (1):2

ID: 61266
Title: Growth performance of timber species under forest plantations in different agro-climatic zone of Jharkhand, India.
Author: Madan Prasad Singh and Sanjay Singh.
Editor: Kunal Satyarthi
Year: 2015
Publisher: Indian Council of Forestry Research & Education.
Source: Centre for Ecological Sciences
Reference: The Indian Forester Vol. 141 (8) 819-825 (2015)
Subject: The Indian Forester.
Keywords: Forest plantations, Growth performance, Timber species, Agro-climatic zones, Jharkhand.
Abstract: Forest department in Jharkhand undertook large scale plantations in the forest lands. Trees planted on forest lands for primarily environmental benefits are being managed per the needs of local people who have rights in those forests. These plantations have enhanced the forest cover by 942 km2 between 2001 and 2011. These plantations created all cover the state provided an excellent opportunity to evaluate the growth performance of timber species in field conditions. This paper presents the growth performance of timber species under plantation forestry in different agroclimatic conditions (subzones or regions) in the state of Jharkhand. The scientific understanding of growth performance of these species would help the entrepreneurs and forest department in exploring the different combination of species for economic viability as well as ecological benefits. There is nearly 2.5 million ha fallow agricultural land area available for tree planting under private forestry in Jharkhand. However, among other support systems for tree cultivation on such lands, the choice of species and management practices are important component for tree growers.
Location: T E 15 New Biology Building.
Literature cited 1: Mahari A. (2005), Growth and Suitability of some tree species selected for planting in adverse environments in Eritrea and Ethiopia. Faculty Natural Resource and Agricultural Sciences.Dept.of Crop Productions Ecology, Swedish University of Agricultural Services, Uppsola. Amanulla Mohamed B.K., Jaya Kumar M.N. and Torvi R.K. (2004).Growth and productivity of acacia hybrids on degraded forest land and other wastelands in Western Ghats region of Karnataka, Indian Forester, 130 (5) : 537-580.
Literature cited 2: Khan B.M., Mirdha M.A.U., Hussain M.K.and Hooda S.M.S. (2006).Growth of Albizia procera Seedlings Under Influence of Microbial Inoculant (Effective Microorganisms).Indian Forester, 130 (5): 537-580. Gill A.S., Ajit (2004).Classification of multipurpose tree species on the basis of their growth attributes under tree/crop inrterface in semi-arid conditions: A clustering approach Indian Forester, 130 (2):173-180.

ID: 61265
Title: Status and impact of protected cultivation in Himachal Pradesh.
Author: R.S.Spehia
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 108 (12) 2254-2257 (2015)
Subject: Current Science.
Keywords: Employment generation, Himachal Pradesh, protected cultivation.
Abstract: The state of Himachal Pradesh is almost wholly mountainous with the altitude ranging from 350 to 6975 m above the mean sea level with its economy largely dependent on agriculture. Further, the state is constrained with small land holdings (avg. size 1.04 ha), as majority of the farmers belong to the marginal and small category (87 %). The use of polyhouses has played a vital role not only in overcoming the vagaries of nature, but also has triggered diversification to vegetable crops of high value. In the present study, productivity of cash crops especially vegetables, employment generation, analysis of income and socio-economic status of small and marginal farmers were assessed, in addition to the saving in inputs, if any, through adoption of precision farming techniques. Considering that only 223.18 ha of area had been brought under protected cultivation, a significant increase in productivity was observed. It also created 4.95 lakh man days of employment (at farmers ' and service provider ' s level), thereby giving additional income to the farmers and their families. The thrust on protected cultivation of vegetables in addition to use of better varieties, better management practices, etc. have played a significant role in the productivity enhancement of cash crops in Himachal Pradesh.
Location: T E 15 New Biology Building.
Literature cited 1: http:// himachalpr.gov.in/Index.aspx?Data =31 http://hpagriculture.com/
Literature cited 2: http://hpagrisnet.gov.in/hpagris/Horticulture/Default.aspx?SiteID =5 & PageId=1033 http://admis.hp.nic.in/himachal/economics/REPORTS/BrieFacts-2013_14_A 1 b.pdf.

ID: 61264
Title: Imperata grasslands: carbon source or sink?
Author: Karabi Pathak, Arun Jyoti Nath and Ashesh Kumar Das.
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 108 (12) 2250-2253 (2015)
Subject: Current Science.
Keywords: Carbon budget, climate change mitigation, Imperata grasslands, soil organic carbon, soil respiration.
Abstract: Imperata grasslands, among the oldest forms of managed village landuse, provide rural people with subsistence and monitory benefits. Yet, little is known about their role in global carbon (C) budget under the scenario of changing climate. The present study was carried out in managed Imperata grasslands in Cachar district, Assam, North East India. The study was designed to understand whether Imperata grasslands are C source or sink, because they are managed through annual fire practice. We studied (i) organic carbon accumulation rate in the soil ,(ii) C input from aboveground biomass (CIAB), (iii) C input from below ground biomass (CIBB) and (iv) Soil CO2 efflux/soil respiration (Rs) on monthly intervals from October 2013 to September 2014 following standard methods. Later monthly data were merged into four distinct seasons, viz. autumn, winter, summer and rainy season to have a clear vision of seasonal influence on C source/sink status. The study showed highest (2.52 g C m-2 month-1) soil organic carbon accumulation during summer season. Highest values for CIAB (14.31 g C m-2 month-1), CIBB (30.98 g C m-2 month-1) and Rs (31.85 g C m-2 month-1) were observed during rainy, autumn and summer season respectively. C budget analysis with respect to seasons showed Imperata grasslands act as C source during winter and summer, whereas they serve as sink during winter and summer, whereas they serve as sink during autumn and rainy seasons. However, annual C budget (across all the months) showed Imperata grasslands as a net sink of 38.45 g C m-2 year-1 (0.40 Mg C ha-1 year-1). Further research is needed to develop better management systems to enhance sink capacity of Imperata grasslands.
Location: T E 15 New Biology Building.
Literature cited 1: Batjes, N.H., Total carbon and nitrogen in the soils of the world. Eur.J.Soil Sci., 1996, 47, 151-163. Lal, R., Soil carbon sequestration to mitigate climate change.Geoderma, 2004, 123, 1-22.
Literature cited 2: Ogle, S.M., Conant, R.T. and Paustian, K., Deriving grassland management factors for a carbon accounting method developed by the Intergovernmental Panel on Climate Change.Environ.Manage., 2004, 33, 474-484. World Resources 2000-2001: People and Ecosystems: The Fraying Web of Life, World Resources Institute, Washington DC, USA.

ID: 61263
Title: Morphological trait variations in the west Himalayan (India) populations of Arabidopsis thaliana along altitudinal gradients.
Author: Akanksha Singh, Antariksh Tyagi, Abhinandan ManiTripathi, Sadashiv M.Gokhale, Nandita Singh and Sribash Roy.
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 108 (12) 2213-2222 (2015)
Subject: Current Science.
Keywords: Altitudinal gradients, Arabidopsis thaliana, genomic resources, morphological traits.
Abstract: Morphological trait variations in four populations of Arabidopsis thaliana that grow along altitudinal gradients (~ 700 to ~3500 m amsl) are described. A total of 38 traits were analysed from each of the four populations. Most of the quantitative traits were significantly correlated with each other among the four populations, but biomass-related traits were negatively correlated with altitude. There was significant correlation between geographical distance and mean pairwise distance of phenotypic traits among the populations. Overall our data suggest there is significant variation in phenotypic traits of the four populations along altitudinal gradients.
Location: T E 15 New Biology Building.
Literature cited 1: Dean, C., Advantages of Arabidopsis in cloning plant genes.Philos.Trans.R.Soc.London, Ser.B, 1993,342, 189-195. Meinke, D.W., Cherry, J.M.., Dean, C., Rounsley, S.D. and Koornneef, M., Arabidopsis thaliana: a model plant for genome analysis. Science, 1998, 282, 679-682
Literature cited 2: Meyerowitz, E.M. and Somerville, C.R. (eds), Arabidopsis, Cold Spring Harbor Laboratory Press, NY, 1994. Pyke, K., Arabidopsis-its use in the genetic and molecular analysis of plant morphogenesis. New Phytol., 1994, 128, 19-37.

ID: 61262
Title: Assessment of water yield and evapotranspiration over 1985 to 2010 in the Gomti River basin in India using the SWAT model.
Author: N.S.Abeysingha, Man Singh, V.K.Sehgal, Manoj Khanna, Himanshu Pathak, Priyantha Jayakody and Raghavan Srinivasan
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 108 (12) 2202-2212 (2015)
Subject: Current Science.
Keywords: Irrigation, rainfall, modeling, streamflow, water use.
Abstract: Soil and Water Assessment Tool (SWAT) was used to assess the water yield and evapotranspiration for the Gomti River basin, India for over a period of 25 years (1985-2010). Streamflow calibration and validation of results showed satisfactory performance (NSE: 0.68-0.51; RSR: 0.56-0.68; ?PBIAS?: 2.5-24.3) of the model. The water yield was higher in the midstream sub-basins whereas evapotranspiration per unit area decreased from upstream to the downstream. Both evapotranspiation and water yield at upstream and midstream sub-basins increased from 1985 to2010, whereas water yield at downstream decreased from 1985 to 2010.We found that the spatial and temporal patterns of evapotranspiration and water yield were closely linked to climatic conditions and irrigation in the basin. The long-term trends in water yield point to a drying tendency of downstream sub-basin covering the districts of Jaunpur and Varanasi.
Location: T E 15 New Biology Building.
Literature cited 1: Raut, A.K., Bansal, A.K., Verma, V.K. and Marr, A.J., Gis-based decision support system for conjunctive irrigation management in India. In 11th International River-symposium, Brisbane, Australia, 1-4 September 2008. Dutta, V.D., Srivastava, R.K., Yunus, M., Ahmed, S.,Pathak, V.V., Rai, L.,and Prasad, N., Restoration plan of Gomti River with designated best use classification of surface water quality based on river expedition, monitoring and quality assessment. Earth Sci.India., 2011, 4 (III), 80-104; http://www.earthscienceindia.info/(accessed on 25 July2013).
Literature cited 2: Rost, S., Gerten, D., Bondeau, A., Lucht, W., Rohwer, J. and Schaphoff, S., Agricultural green and blue water consumption and its influence on the global water system. Water Resour.Res. 2008, 44, WO9405; doi: 10.1029/2007WR006331. Liu, J., Zehnder, A.J.B. and Yang, H., Global consumptive water use for crop production: The importance of green water and virtual water. Water Resour.Res. 2009, 45, WO5428; doi: 10.1029/2007WR006051.

ID: 61261
Title: Recent trends in wind-wave climate for the Indian Ocean.
Author: Nitika Gupta, Prasad K.Bhaskaran and Mihir K.Dash
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 108 (12) 2191-2201 (2015)
Subject: Current Science.
Keywords: Climate, Indian Ocean, maximum wave height, maximum wind speed, satellite observations.
Abstract: Surface gravity waves play an important role in ocean engineering studies and their influence on the dynamics of the coastal zone is critical. Proper knowledge on wind-wave climatology is an area of immense interest to engineers and climate modelers. Climate change has influenced weather patterns over global oceans and at present is a matter of serious concern, as it can have long-term repercussions. There is a need to understand the recent trends in variability of wind-waves for planning operations. To improve climate projections the Intergovernmental Panel on Climate Change report highlights the need and importance for wind-wave climate study. With this motivation, we study the variability of recent trends in maximum wind speed (MWS) and maximum significant wave height (MSWH) exclusively based on altimeter data for the Indian Ocean basin. We use daily data of MWS and MSWH from eight satellite missions covering a period of 21 years (1992-2012) .The findings indicate that regions in the Southern Ocean (between 45 ? S and 55 ? S) experienced the largest variability in wind-wave climate. Higher MSWH resulting from increased MWS have practical implications on swell generation field that eventually cross the hemisphere influencing wind-waves elsewhere. The study also reveals the impact of wind-wave activity for the Indian Ocean basin in the past decade.
Location: T E 15 New Biology Building.
Literature cited 1: Gulev, S.K., Grigorieva, V.,Sterl, A. and Woolf, D., Assessment of the reliability of wave observations from voluntary observing ships: Insights from the validation of a global wind wave climatology based on voluntary observing shipdata.J.Geophys.Res.Oceans, 2003, 108 (C7), 3236; doi: 10.1029/2002JC001437. Hemer, M.A.,Church, J.A. and Hunter, J.R., Variability and trends in the directional wave climate of the Southern Hemisphere.Int.J.Climatol., 2010, 30, 475-491.
Literature cited 2: Young, I.R., Zieger, S., and Babanin, A.V., Global trends in wind speed and wave height. Science, 2011, 332, 451-455. Gower, J.F.R., GEOS-3 Ocean wave measurements in Northeast Pacific.Trans.Am.Geophys.Union, 1976, 57 (12), 944.

ID: 61260
Title: Fifty years of tiger pheromone research.
Author: R.L.Brahmachary and Mousmi Poddar-Sarkar.
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 108 (12) 2178-2185 (2015)
Subject: Current Science.
Keywords: Lipid, mammalian pheromone, tiger, volatiles.
Abstract: The results of our 50 years of tiger pheromone research have been summed up in the larger context of research in this field. In order to understand the perspective, tiger behaviour, such as that of territory and home range, the possible sources of tiger pheromone as revealed through observation, the chemistry of putative pheromones and the expression of ' self ' and ' non-self ' by individuals, the fixatives of pheromones and the possible mechanism of stamping of individuality in the pheromonal potpourri have been discussed. The implications of some of the putative pheromone molecules in genomics have been indicated. Our present limitations in understanding the essence of the problem and some future probable guidelines have also been discussed.
Location: T E 15 New Biology Building.
Literature cited 1: Thapar, V., Tiger: The Ultimate Guide, Oxford University Press, 2006. Locke, A., Tigers of Trengganu, Museum Press, London, 1954.
Literature cited 2: Adamson, J., Born Free, Collins, London, 1960. Adamson, G., My pride and Joy, Collins, London, 1986.

ID: 61259
Title: Species diversity-primary productivity relationships in a nitrogen amendment experiment in grasslands at Varanasi, India.
Author: R.Sagar, Punita Verma, Hariom Verma, Dharmendra K.Singh, Preeti Verma.
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 108 (12) 2163-2166 (2015)
Subject: Current Science.
Keywords: Species diversity, primary productivity relationships, nitrogen amendment experiment, Grasslands, Varanasi, India.
Abstract: The accelerated loss of biodiversity due to the land use and global climate changes has proved detrimental to ecosystem functioning (i.e. litter decomposition, nutrient cycling, energy storage and flux, ecosystem services, etc). It has attracted intensive experiments during the past four decades, because primary productivity (P) as a measure of ecosystem functioning may or may not be closely coupled with species diversity (D). Nevertheless, relationships between the above have been attributed to changes in the size and composition of competitive plant functional groups under varied resource availability and diverse ecological incidents.
Location: T E 15 New Biology Building.
Literature cited 1: Grime, J.P., J.Environ.Manage, 1973, 1, 151-167. Ruijven, J.V. and Berendse, F., Proc.Natl.Acad.Sci.USA, 2005, 102, 695-700.
Literature cited 2: Isbell, F. et al., Nature, 2011, 477, 199-202. Isbell, F. et al., Proc.Natl.Acad.Sci.USA, 2013, 110, 11911-11916.

ID: 61258
Title: Biodegradable ropes from seaweed extracts
Author: Ipsita Herlekar
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 108 (12) 2140-2140 (2015)
Subject: Current Science.
Keywords: Biodegradable ropes, seaweed extracts.
Abstract: A research team from the CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat has developed a biodegradable material made of seaweed extracts to replace synthetic ropes that are used in seaweed farming and other applications. Seaweeds are cultivated along the coasts using low-technology methods. Seaweed seedlings are tied to ropes strung on a wooden frame. These frames are then left submerged in shallow sea water. Fuelled by the energy gained from photosynthesis using sunlight and the nutrients that the tides bring in, the seedlings are ready to be harvested in 6-8 weeks.
Location: T E 15 New Biology Building.
Literature cited 1: Chaudhary, J.P., Chejara, D.R., Eswaran, K., Meena, R. and Ghosh, P.K., RSC Adv., 2015, 5, 19426.
Literature cited 2: None

ID: 61257
Title: A perspective of alkaline Lonar Lake, Maharashtra, India with reference to its hydrochemistry.
Author: D.V.Reddy, T.Madhav, P.Chandrakala and P.Nagabhushanam.
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 109 (5) 965-975 (2015)
Subject: Current Science.
Keywords: alkaline Lake, hydrochemistry, Lonar crater, stable isotopes.
Abstract: The inland Lonar Lake, encompassing a circular area of about 1 sq.km is situated in Buldhana district, Maharashtra state, India. The Lake is part of the Lonar crater believed to have formed due to meteoric impact. It is third largest natural salt-water lake in the world. The lake water is not only saline, but also highly alkaline. In recent years, it is believed that the alkalinity and salinity of the lake water is being diluted with increased lake water level due to external inputs like seepage of water into the lake from nearby surface reservoirs. Studies on hydrochemical and isotopic signatures of lake water, and also lake water levels were carried out for one year to understand the lake dynamics. The generated data were compared with those available in the literature. This comparison showed that the water level and hydrochemistry of lake water are controlled by the local rainfall and evaporation, and that there are no other external water inputs to the lake.
Location: T E 15 New Biology Building.
Literature cited 1: Orlebar, A., Account of the Lake Lonar.Trans.Bombay Geogr.Soc, 1839, 1, 9-43. Blanford, W.T., Note on the route on the Pooba to Nagpur via Ahmednagar, Jalna, Lonar, Yeotmal, Mangali and Hingumghat.Rec.Geol.Sur.India, 1868, 1, 60-65.
Literature cited 2: La Touche, T.H.D and Christie, W.A.K., The geology of the Lonar Lake and note on the Lonar soda deposit.Rec.Geol.Surv.India, 1911, 14 (4), 266-285. Nandy, N.C. and Deo, V.B., Origin of Lonar Lake and its Alkalinity, Tata Iron and Steel Company, Jamshedpur, 1961, vol.8, 144-155.

ID: 61256
Title: Vegetation and climatic variability in southeastern Madhya Pradesh, India since Mid-Holocene, based on pollen records.
Author: M.S.Chauhan
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 109 (5) 956-965 (2015)
Subject: Current Science.
Keywords: Climate, pollen analysis, sediment core, vegetation.
Abstract: Pollen analysis of 1.75 m deep sediment core from Tula-Jalda (Amarkanatak) in Anuppur district, Madhya Pradesh shows that around 4500-3600 cal years BP, this region supported open mixed tropical deciduous forests comprising chiefly Madhuca indica followed by Terminalia, Mitragyna parvifolia, Haldina cordifolia, Emblica officinalis and Acacia, under a warm and relatively less humid climate. The retrieval of Cerealia and other cultural pants, viz. Artemisia, Cheno/Am and Caryophyllaceae signifies that the region was under cereal-based agricultural practice. The open mixed deciduous forests got enriched and dense around 3600-2761 cal years BP with the expansion of trees that already existed coupled with invasion of Symplocos, Diospyros, Lannea coromandelica and Radermachera with the inception of a warm and moderately humid climate in response to increased monsoon precipitation. Around 2761-2200 cal years BP, much expansion of the forests took place owing to initiation of a warm and more humid climate, attributed to intensification of the southwest monsoon. The modern Sal (Shorea robusta) forests were established around 2200 cal years BP, as clearly deciphered by the steady presence of S. robusta along with close allies such as M.indica, Termanalia, H.cordifolia, E.officinalis, etc. This change in the vegetation scenario implies that a warm and relatively more humid climate prevailed with timely arrival of the more active southwest monsoon.
Location: T E 15 New Biology Building.
Literature cited 1: Vishnu-Mittre, Studies of the vegetation history from the swamps in the Nilgiris.1.The Nilgiri peat deposits. In Proceedings of 50th Indian Science Congress, Calcutta, 15-17 January 1963, vol.3, pp. 394-395. Vishnu-Mittre and Gupta, H.P., A living fossil plant community in south Indian hill. Curr. Sci., 1968, 37, 671-672.
Literature cited 2: Vishnu-Mittre and Gupta, H.P., The origin of Shola forest in the Nilgiris, south Indian hill. Palaeobotanist, 1971, 19 (1), 110-114. Gupta, H.P. and Bera, S.K., Silent valley, a correlation between pollen spectra and vegetation.Palaeobotanist, 1996, 43 (2), 139-144.

ID: 61255
Title: Spectrophotometric determination of molybdenum with Syzygium jambolanum Dc leaf extracts.
Author: J.R.Mudakavi and K.Puttanna
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 109 (5) 949-953 (2015)
Subject: Current Science.
Keywords: Green chemistry, molybdenum, plant extract, spectrophotometry, Syzygium jambolanum
Abstract: A new spectrophotometric method for the determination of molybdenum in industrial materials has been developed using the leaf extract of Syzygium jambolanum DC based on the reaction of Mo (Vi) at pH 7.0 to produce an orange-yellow complex with an absorption maximum at 426 nm. The molar absorptivity of the complex is 4.27 x 104 l mol-1 cm-1 and the absorbance, is linear in the range 0.05-0.8 ppm. Sandell sensitivity coefficient was found to be 2.25 x 10-3 ?g/cm2.The method is ten times more sensitive than the aqueous thiocyanate system. It has been applied successfully in micronutrient fertilizer, artificial freshwater and sea-water analyses.
Location: T E 15 New Biology Building.
Literature cited 1: Koel, M.and Kaljurand, M., Application of the principles of green chemistry in analytical chemistry. Pure Appl.Chem, 2006, 78, 1993-2002. Wang, J., Real-time electrochemical monitoring: toward green analytical chemistry.Acc.Chem.Res, 2002, 35, 811-816
Literature cited 2: Tobiszewski, M., Mechlinska, A.and Namiesnik, J., Green analytical chemistry-theory and practice.Chem.Soc.Rev, 2010, 39, 2869-2878. De la Guardia, M.and Garrigues, S. (eds), Challenges in Green Analytical Chemistry, The Royal Society of Chemistry, UK, 2011, p.330.

ID: 61254
Title: Agent-based modeling of biofilm formation and inhibition in Escherichia coli, furanones.
Author: Anusha Modwal and Shrisha Rao.
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 109 (5) 930-937 (2015)
Subject: Current Science.
Keywords: Agent-based modeling, biofilm, Escherichia coli, furanones.
Abstract: Biofilm formation by bacteria such as Escherichia coli is a serious challenge faced in the treatment of infections. Biofilms provide a protected environment for the pathogens where they persist despite environmental adversities and treatments, and cause chronic infections. Furanones, both naturally occurring and synthetic, have been found to inhibit biofilm formation. An agent-based model of the behaviour of E.coli with regard to formation and inhibition of biofilms is described here. Analytical tools used in this article allow us to find the optimal range of inhibitor concentration for gram-negative bacteria. This is made possible by appropriate mathematical analysis, reducing the need for laborious experimental verification. The results are seen to be consistent with published experimental data on biofilm thickness of E.coli when acted upon by furanones. Our model permits the estimation of concentration of inhibitors needed to properly curb biofilms. This in turn has therapeutic implications, in that it may help formulate strategies to prevent the formation and growth of biofilms, especially in the context of devices placed inside the body, like catheters and implants.
Location: T E 15 New Biology Building.
Literature cited 1: Chole, R.A., Olomu, O. and Wang, E.W., Bacterial biofilm infections in otology, Rec.Adv.Otolaryngol, 2009, 8, 21-29. Jacom, E.B., Becker, I.Shapira, Y.and Levine, K., Bacterial linguistic communication and social intelligence. Trends Microbiol., 2004, 12 (8), 366-372.
Literature cited 2: Costerton, J., Stewart, P. and Greenberg, E., Bacterial biofilms: a common cause of persistent infections. Science, 1999, 284, 1318-1322. Roberts, M.E. and Stewart, P.S., Modelling protection from antimicrobial agents in biofilms through the formation of persister cells. Microbiology, 2005, 151, 75-80.

ID: 61253
Title: Initial set of oceanographic data from Bay of Bengal using an underwater glider as mobile sensor mode.
Author: Shijo Zacharia, R.Seshasayanan, V. Gowthaman, S. Muthukumaravel, Tata Sudhakar and M.A.Atmananad.
Editor: R. Srinivasan.
Year: 2015
Publisher: Current Science Association and Indian Academy of Sciences.
Source: Centre for Ecological Sciences
Reference: Current Science Vol. 109 (5) 918-929 (2015)
Subject: Current Science.
Keywords: Mobile sensor node, oceanographic data, underwater glider, underwater acoustics.
Abstract: Underwater gliders measure high-resolution spatio-temporal oceanographic data. However, glider operations have not been carried out in the Indian Ocean region so far. In September 2013, the National Institute of Ocean Technology, Chennai introduced a mobile sensor node, the underwater glider ' Barathi ' for observation in the Bay of Bengal (BoB). Here we report ballasting procedure of the glider operated in highly variable density waters of BoB. The temperature and conductivity data collected are strongly correlated with commercially available instrument with coefficient of determination R2 > 0.97. We report results from a long-duration (127 days) mission in 2014. The variation of temperature, salinity, density, sound velocity, mixed layer depth, sonic layer depth and lower cutoff frequency of surface duct along 13? N lat. and between 80.76?E and 86.28? E long. are also presented. The results show a trace of the East Indian Costal Current. The glider operations demonstrate a new in situ observation platform in BoB.
Location: T E 15 New Biology Building.
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