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Water quality assessment of Malad Creek, Mumbai, India: an impact of sewage and tidal water(Water Science and Technology)
(Veena K. Saradar Ritesh Vijay R. A. Sohony,62,9,2037-2043,Year : 2010)
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The aim of the study was to carry out water quality assessment and to identify sources responsible for deterioration of quality in the Malad creek, Mumbai, India. Creek receives sewage and wastewater from various drains and partially treated effluent from Malad and Versova treatment facilities. To assess the water quality, sampling locations were identified in the creek based on discharges of wastewater and sewage. Identified locations were traced in physical space by a global positioning system. Samples were collected during low and high tides and analyzed for physical, chemical and bacteriological parameters such as pH, Turbidity, DO, BOD, NH3-N, PO4 and FC and compared with SW-II Standards. Parameters were also analyzed statistically and correlated to determine the relationship amongst the parameters using SPSS software. The idea was to determine the probable causes contributing to the pollution in the creek. Various options were suggested for improvement in the creek quality based on water quality assessment.
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Remote sensing of turbidity and phosphate in creeks and coast of Mumbai: An effect of organic matter(Transactions in GIS)
(Deepty R. Satapathy, Ritesh Vijay, S. R. Kamble, R. A. Sohony,14,6,811-832,Year : 2010)
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Geospatial approaches to monitoring and mapping water quality over a wide range of temporal and spatial scales have the potential to save field and laboratory efforts. The present study depicts the estimation of water quality parameters, namely turbidity and phosphate, through regression analysis using the reflectance derived from remote sensing data on the west coast of Mumbai, India. The predetermined coastal water samples were collected using the global positioning system (GPS) and were measured concurrently with satellite imagery acquisition. To study the influence of wastewater, the linear correlations were established between water quality parameters and reflectance of visible bands for either set of imagery for the study area, which was divided into three zones: creek water, shore?line water and coastal water. Turbidity and phosphate have the correlation coefficients in the range 0.75–0.94 and 0.78–0.98, respectively, for the study area. Negative correlation was observed for creek water owing to high organic content caused by the discharges of domestic wastewater from treatment facilities and non?point sources. Based on the least square method, equations are formulated to estimate turbidity and phosphate, to map the spatial variation on the GIS platform from simulated points. The applicability of satellite imagery for water quality pattern on the coast is verified for efficient planning and management.
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Water quality simulation of sewage impacts in west coast of Mumbai, India(Water Science and Technology)
(Ritesh Vijay, Puja Khobragade R. A. Sohony,165,1-3,559-571,Year : 2010)
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Most coastal cities use the ocean as a site of waste disposal where pollutant loading degrades the quality of coastal waters. Presently, the west coast of Mumbai receives partially treated effluent from wastewater treatment facilities through ocean outfalls and discharges into creeks as well as wastewater/sewage from various open drains and nallahs which affect the water quality of creek and coastal water. Therefore, the objective of this paper is to simulate and assess the hydrodynamic behaviour and water quality due to impact of sewage and wastewater discharges from the west coast of Mumbai. Hydrodynamics and water quality were simulated based on present conditions and validated by using measured tide, current data and observed DO, BOD and FC. Observed and simulated results indicated non compliance to standards in Malad, Mahim creeks and the impact zones of ocean outfalls. The developed model could be used for generating various conditions of hydrodynamics and water quality considering the improvement in wastewater collection systems, treatment levels and proper disposal for proper planning and management of creeks and coastal environment.
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Hydrodynamic assessment of sewage impact on water quality of Malad Creek, Mumbai, India(Environmental Monitoring and Assessment)
(Ritesh Vijay, V. K. Sardar, S. S. Dhage, P. S. Kelkar, A. Gupta,165,1-3,559-571,Year : 2010)
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The rapid population growth and uncontrolled development in the coastal zone have led to major pollution impacts on creeks, estuarine, and coastal environment. Water quality models are valuable tools to understand the environmental processes for prediction of pollution impacts and evaluate future trends for management. Presently, the Malad creek in west coast of Mumbai receives wastewater and sewage from open drains and partially treated sewage from Malad and Versova treatment plants. The objective of the paper is to assess the environmental quality and estimate the extent of improvement in different parts of the creek by enhancing the collection efficiency and adequate treatment of sewage as well as disposal through ocean outfall. A hydrodynamic and water quality simulation has been carried out for the present condition in the creek and calibrated and validated with two different season data for better representation of the system. Calibrated model has been used to generate future scenarios based on various options. Among scenarios, option of treated effluent diverted to propose outfall and improvement in collection of unorganized flow through sewerage up to 40% and 60% are found most significant for biochemical oxygen demand reduction and increase in dissolved oxygen. Fecal coliform reduction is also found drastically but still very high against standard. To improve the environmental quality of the creek, still upper stretch requires more dilution and flushing due to narrow width and contribution of heavy pollution from open drains.
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Development of Noise simulation model for stationary and mobile sources: a GIS based approach(Environmental Monitoring and Assessment)
(Asheesh Sharma, Ritesh Vijay, Veena Sardar, Rajiv Sohony, Apurba Gupta,15,3,189-197,Year : 2010)
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In the rapidly urbanizing country like India, the transportation sector is growing rapidly, which lead to overcrowded roads producing air and noise pollution. Noise of a particular region is influenced by the volume of traffic on the highway, in addition to other causative factors like existing infrastructure and industrial setup etc. In the present paper, a geographical information system (GIS)-based noise simulation model has been developed to generate noise levels in Versova region of Mumbai, India. The study area comprises effect of infrastructure, road network, traffic volume, and various mechanical components like sewage pumping station and wastewater treatment facility. Various meteorological parameters and effect of land use and land cover on noise attenuation are also considered in the model. In this way, commutative noise prediction for point as well as mobile sources has been presented in the study. GIS-based noise simulation has been calibrated with observed noise levels during day and night time with correlation of 0.84 and 0.74, respectively. KeywordsNoise-Simulation-GIS-Point and mobile source
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Adaptability of membrane filtration systems under different treatment options for textile wastewater management in an industrial cluster(Desalination and Water Treatment)
(Manikavasagam Karthik, Pravin Manekar, Tapas Nandy,24,1-3,90-201,Year : 2010)
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Textile manufacturing requires extensive quantity of raw materials such as dyes, salts and water in the process with resultant discharge of these in the wastewaters generated. Indiscriminate disposal of textile effluents in a town located in South of India has severely damaged the ground and surface waters in the area. Current emphasis on protecting the water bodies in the town through tough regulatory compliances following zero discharge has laid the industries as well as regulatory agencies in dilemma. This has resulted in implementation of various treatment options to meet the regulatory norms and water recovery. Recent developments in membrane and advanced oxidation techniques have resulted in having alternatives for the treatment of textile effluent in the cluster. The paper addresses to the case study undertaken in the textile cluster to study operational textile effluent treatment plants employing a combination of unit operations and processes (UO&P) technologies to comply with zero effluent liquid discharge norms. The paper discusses various costs involved in different UO&P options of different technologies are presented here to highlight a sustainable wastewater management with resource recovery.
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Production and single-step purification of Brugia malayi abundant larval transcript (ALT-2) using hydrophobic interaction chromatograph(J. Ind. Microbiol. Biotechnol.)
(Bhuvanesh, S., Arunkumar, C., Kaliraj, P., Ramalingam, S.,37,,1053-1059,Year : 2010)
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Abundant larval transcript (ALT), a novel filarial protein, has been shown to have great potential as a vaccine in the prevention of human lymphatic filariasis. In this study, we report a method for the production of recombinant ALT-2 protein, expressed in the cytoplasm of bacterium Escherichia coli in soluble form and purification in a single step using hydrophobic interaction chromatography (HIC). Fermentation was done by continuous fed-batch methodology with dissolved oxygen (DO)-controlled feed addition. The culture was induced with 1 mM isopropyl-?-D-thiogalactopyranoside (IPTG). Up to 9 g/l dry cell weight (DCW) of biomass was obtained from 1.6 l of Luria–Bertani (LB) broth in a bench-scale reactor. Around 200 mg/l of purified ALT-2 with a yield of about 60% was obtained. This is almost a 2.5-fold increase in final protein yield compared to purification using immobilized metal affinity chromatography (IMAC).
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Efficient hydrogen supply through catalytic dehydrogenation of methylcyclohexane over Pt/metal oxide catalysts(International journal of hydrogen energy)
(AA Shukla, PV Gosavi, JV Pande, VP Kumar, KVR Chary, RB Biniwale,35 (9), ,,4020-4026,Year : 2010)
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No information is available
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In situ nitrogen enriched carbon for carbon dioxide capture(Carbon)
(JA Thote, KS Iyer, R Chatti, NK Labhsetwar, RB Biniwale, SS Rayalu,48 (2),,, 396-402,Year : 2010)
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No information is available
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Development of noise simulation model for stationary and mobile sources: A GIS-based approach(Environmental modeling & assessment )
(A Sharma, R Vijay, VK Sardar, RA Sohony, A Gupta,15 (3), ,,189-197,Year : 2010)
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No information is available
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Copper oxide incorporated mesoporous alumina for defluoridation of drinking water(Microporous and Mesoporous Materials )
(A Bansiwal, P Pillewan, RB Biniwale, SS Rayalu,129 1, ,,54-61,Year : 2010)
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No information is available
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Pure phase LaFeO 3 perovskite with improved surface area synthesized using different routes and its characterization(Materials Chemistry and Physics )
(PV Gosavi, RB Biniwale,119 1,,, 324-329,Year : 2010)
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No information is available
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NutriL-GIS: A Tool for Assessment of Agricultural Runoff and Nutrient Pollution in a Watershed(National Environmental Engineering Research Institute (NEERI). India)
(A Sharma, A Sargaonkar, B Rathi, S Kothe,,,,Year : 2010)
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No information is available
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Synthesis of highly antibacterial nanocrystalline trivalent silver polydiguanide(Journal of the American Chemical Society)
(Sukdeb Pal, Eun Jeong Yoon, Yu Kyung Tak, Eung Chil Choi, Joon Myong Song,Vol(131),Issue(44),Pages(16147-16155),,,Year : 2009)
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Highly monodispersed nanoparticles of a trivalent silver polydiguanide complex are synthesized by oxidation of the monovalent silver, followed by stabilization of the oxidized higher-valent metal through complexation with a polydiguanide ligand in a reverse microemulsion at room temperature. The synthesized nanoparticles have excellent photostability and displayed superior antibacterial activity toward Gram-positive and Gram-negative prokaryotes of clinical interest in vitro compared to silver sulfadiazine.
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An IMEA-PDA microchip for on-chip electrochemiluminescence detection
(Ji Yoen Kim, Sukdeb Pal, Min Jung Kim, Yu Kyung Tak, Ho Taik Kwon, Joon Myon Song,Pages(254-254),,,Year : 2009)
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This paper reports the design, fabrication and testing of a microchip wherein interdigitated microelectrode arrays (IMEA) were integrated with bipolar semiconductor photodiode array (PDA) chip to fabricate a highly compact embodiment for on-chip handling of solutions and electrochemiluminescence (ECL) detection. A 12? 12 micro array of photodiodes, each coupled withan interdigitated microelectrode array (IMEA), an array of current amplifiers, and a photodiode element-addressing circuit were integrated into a single 2? 2 cm2IC chip. Each photodiode had dimensions of 300? 300?m2 and the photodiode-to-photodiode distance was 100?m2. The chip was successfully applied to the on-chip quantification of electro chemiluminescing probelabeled single stranded oligonucleotides.
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Identification of ?-ray irradiated medicinal herbs by pulsed photostimulated luminescence, thermoluminescence, and electron spin resonance spectroscopy
(Won-Young Kim, Sukdeb Pal, Byeong Keun Kim, Min Jung Kim, Hyeon A Ki, Kyeong-Hee Lee, Woo Suk Kang, In Ho Kang, Shin Jung Kang, Joon Myon Song,Pages(253-253),,,Year : 2009)
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Dried herbal samples consisting of root, rhizome, cortex, fruit, peel, flower, spike, ramulus, folium, and whole plant of 20 different medicinal herbs were investigated using pulsed photostimulated luminescence (PPSL), thermoluminescence (TL), and electron spin resonance spectroscopy (ESR) to identify ?-ray irradiation treatment. Samples were irradiated at 0-59 kGy using a 60Co irradiator. PPSL measurement was applied as a rapid screening method. control samples of 19 different herbs had photon counts less than the lower and upper threshold values (700counts 60s-1). The photon counts of non-irradiated clematidis radix radix and irradiated evodia and gardenia fruits were between the lower and upper threshold values (700-5,000 counts 60s-1).
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Effects of ?-Ray Irradiation on Armeniacae Semen: A Three-Way Investigation Using GC-MS, HPLC, and Electron Spin Resonance
(KIM Min Jung, TAK Yu Kyung, KlM Won Young, PAL Sukdeb, KIM Byeong Keun, WOO Suk Kang, KANG InHo, KANG Shin Jung, SONG Joon Myong,Pages(226-226),,,Year : 2009)
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No information is available
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Identification of ?-Ray Irradiated Medicinal Herbs by Pulsed Photostimulated Luminescence, Thermoluminescence, and Electron Spin resonance Spectroscopy
(KlM WonYoung, PAL Sukdeb, KIM Min Jung, KI HyeonA, KIM Byeong Keun, KANG Woo Suk, LEE KyeongHee, KANG InHo, KANG Shin Jung, SONG Joon Myon,Pages(229-229),,,Year : 2009)
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Identification of ?-Ray Irradiated Medicinal Herbs by Pulsed Photostimulated Luminescence, Thermoluminescence, and Electron Spin resonance
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DNA Mutation Detection in Microfluidic Devices Using Poly (Nisopropyl) acrylamide As Pseudostationary Phase
(Yu Kyung Tak, Sukdeb Pal, Joon Myong Song,Pages(186-186),,,Year : 2009)
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Purpose: Recently, capillary electrochromatography (CEC) and mirochip electrochromatography (Microchip CEC) have gained attention due to the wide range of applications based on the use of open tubular capillaries. In this work, the use of phase-separated poly (N-isopropyl) acrylamide (PNIPAM) as a pseudostationary phase for CEC and microchip CEC is demonstrated for the detection of single nucleotide polymorphisms (SNPs). Methods: A typical cross channel microfluidic system was fabricated using an elastomeric material-poly (dimethylsiloxane)(PDMS). A master containing the network of the channels was created using photolithography. PDMS cast against the master yielded a polymeric replica. Conformal contact between the oxygen plasma oxidized surfaces of the PDMS replica and a flat PDMS slab formed the miniaturized capillary electrophoresis system
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Nanocrystalline silver supported on activated carbon matrix from hydrosol: antibacterial mechanism under prolonged incubation conditions(Journal of nanoscience and nanotechnology
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(Sukdeb Pal, Yu Kyung Tak, J Joardar, Wook Kim, Jong Eun Lee, Myun Soo Han, Joon Myong Song,Vol(9),Issue(3),Pages(2092-2103),,,Year : 2009)
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Nanocrystalline silver-supported activated carbon (AC) was fabricated by directly loading silver nanoparticles into the porous AC matrix from a preformed nanosilver hydrosol. Silver-AC composites were also synthesized using a conventional thermal impregnation method. While XRD calculation indicated the presence of Ag crystallites in nanometer range, silver nanoparticle hydrosol-treated AC having the finest crystallite size CS (Escherichia coli. The kinetics of bacterial inactivation, in presence of hydroxyl radical (OH) scavengers, and superoxide anion radical (O? 2) inducer suggest the contribution of the reactive oxygen species (ROS) to antibacterial effect. However, these ROS scavengers did not show any inhibition of bactericidal activity after ?1 h, suggesting that generated ROS are responsible for E. coli inactivation only during the initial 1 h of the incubation time.
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