Pune, India
Pune, India

Time filter

Source Type

Mirza Z.A.,Tata Institute of Fundamental Research | Sanap R.V.,Indian Institute of Ecology and Environment | Bhosale H.,Fergusson College
PLoS ONE | Year: 2014

The theraphosid spider genera Heterophrictus Pocock, 1900 and Neoheterophrictus Siliwal & Raven, 2012 are rediagnosed in this paper and a new genus, Sahydroaraneus gen. nov. is described from Southern Western Ghats. Four new species (two each of Heterophrictus and Neoheterophrictus) and one of Sahydroaraneus gen. nov. are described from the Western Ghats. Plesiophrictus mahabaleshwari Tikader, 1977 is removed from the synonymy of Heterophrictus milleti Pocock, 1900 and is treated as a junior synonym of Heterophrictus blatteri (Gravely, 1935). Plesiophrictus bhori Gravely, 1915 is transferred to the genus Neoheterophrictus, Neoheterophrictus bhori (Gravely, 1915) new combination. The genus, Sahydroaraneus gen. nov., resembles tarantula belonging to the genus, Neoheterophrictus but differs with respect to structure of tibial apophysis and spermathecae. Detailed ultra-structure of setae type of the Indian Eumenophorinae is presented for the first time along with notes on their biogeography. Common elements among Africa, Madagascar and India like the Eumenophorinae and several other mygalomorph spiders advocate mygalomorphae as an important group for evolutionary investigation due to their inability for long distance dispersal rendering the members restrictive in distribution. © 2014 Mirza et al.

Mate M.S.,Maulana Azad National Institute of Technology | Pathade G.,Fergusson College
World Journal of Microbiology and Biotechnology | Year: 2012

Synthetic dyes are extensively used in textile dyeing, paper, printing, colour photography, pharmaceutics, cosmetics and other industries. Among these, azodyes represents the largest and most versatile class of synthetic dyes. As high as 50% of the dyes are released into the environment during manufacture and usage. Traditional methods of treatment are found to be expensive and have operational problems. Biological decolourization has been investigated as a method to transform, degrade or mineralize azo dyes. In the present studies bacteria from soil from dye waste area, dye waste, sewage and dung were subjected to acclimatization with C. I. Reactive Red 195 an azo dye, in the basal nutrient media. The most promising bacterial isolate was used for further dye degradation studies. The 16s rRNA gene sequencing and biochemical characteristics revealed the isolated organism as Enterococcus faecalis strain YZ66. The strain showed 99. 5% decolourization of the selected dye (Reactive Red 195-50 mg/l) within one and half hour in static anoxic condition. The optimum pH and temperature for the decolourization was 5. 0 and 40°C respectively. The biodegradation was monitored by UV-Vis, FTIR, TLC and HPLC. The final products were characterized by Gas chromatography and Mass Spectrophotometry. Toxicity study demonstrated no toxicity of the biodegradation product. The results suggest that the isolated organism E. faecalis strain YZ 66 can be used as a useful tool to treat waste water containing reactive dyes. © 2011 Springer Science+Business Media B.V.

Sahasrabudhe M.,Maulana Azad National Institute of Technology | Pathade G.,Fergusson College
Indian Journal of Experimental Biology | Year: 2012

Azo dye Reactive Red 195 was selected for decolourization and degradation studies by Georgenia sp.CC-NMPT-T3. Optimization of parameters for dye decolourization was studied under static anoxic condition. Under optimized condition decolourization of Reactive Red 195 by Georgenia sp.CC-NMPT-T3 was found to be 95.93% at 50 mg/L within five hours in static anoxic condition. The optimum pH and temperature for the decolourization was 7.0 and 40 °C respectively. The biodegradation was monitored by UV-Vis, and TLC and HPLC. Toxicity study demonstrated no toxicity of the biodegraded product. The results suggest that the isolated organism Georgenia sp.CC-NMPT-T3 as a useful tool to treat wastewater containing reactive dyes.

Nigam P.,CSIR - National Chemical Laboratory | Waghmode S.,Garware College | Louis M.,Fergusson College | Wangnoo S.,Fergusson College | And 2 more authors.
Journal of Materials Chemistry B | Year: 2014

Pancreatic cancer is considered to be the deadliest of all cancers due to its poor prognosis and resistance to conventional therapies. In this study, the potential of hyaluronic acid functionalized and green fluorescent graphene quantum dot (GQD)-labeled human serum albumin nanoparticles for pancreatic cancer specific drug delivery and bioimaging was explored. GQDs with tunable fluorescence properties and biocompatibility have attracted much more interest in recent years as compared to their metal semiconductor counterparts. We adopted lawsone (2-hydroxy-1,4-naphthoquinone) as a novel reducing agent for the synthesis of quantum dots and, in addition to excellent fluorescence of the synthesized GQDs, a good quantum yield of ∼14% was also obtained. Gemcitabine, the most preferred drug for pancreatic cancer treatment, was encapsulated in albumin nanoparticles, and it was observed that our nanoformulation significantly enhanced the bioavailability and sustained release property of the drug to pancreatic cancer cells in vitro. Moreover, the GQD-mediated bioimaging was excellent and enhanced the efficacy of our system as a drug delivery vehicle. © the Partner Organisations 2014.

Yengantiwar A.,Fergusson College | Sharma R.,Fergusson College | Game O.,CSIR - National Chemical Laboratory | Banpurkar A.,University of Pune
Current Applied Physics | Year: 2011

Aligned ZnO films of nanorods arrays were grown on Indium doped Tin oxide (ITO) glass substrate for the Dye Sensitized Solar Cells (DSSCs) applications. Two-step approach was employed for the deposition, which offers advantages such as excellent surface adhesion, large area deposition, high reproducibility and yield. Structural characterization using X-ray diffraction (XRD) shows a preferred c-axis (002) oriented growth. Scanning Electron Microscopy (SEM) images reveals uniformly distributed hexagonal ZnO nanorods with average diameter varying from 80 to 250 nm. Average growth rate of the films was estimated using Surface Profilometer which was found to be ∼1 μm/h. Optical characterizations were carried out using Photo-spectrometer and Raman spectroscopy. The DSSCs using these ZnO films of nanorods array as photo-electrodes show conversion efficiency ranging from 0.24 to -0.71 %, the maximum efficiency was obtained for films deposited for time duration 8 h. © 2010 Elsevier B.V. All rights reserved.

Mude S.N.,Fergusson College | Kundal P.,Rashtrasant Tukadoji Maharaj Nagpur University
Journal of the Geological Society of India | Year: 2012

The Neogene-Quaternary sediments well exposed in the Porbandar Basin are characterized by coralline algae. The limestone, calc-arenites and marls are the dominant lithology of this sequence. The present paper documents ten species of coralline algae. Among these, the nongeniculate coralline algae are represented by four species and geniculate coralline algae include six species. The sediments yielding this algal flora range in age from the Lower Miocene to Late Holocene. © Geol. Soc. India.

Kitture R.,Fergusson College | Koppikar S.J.,Bharati Vidyapeeth Deemed University | Kaul-Ghanekar R.,Bharati Vidyapeeth Deemed University | Kale S.N.,Indian Defence Institute of Advanced Technology
Journal of Physics and Chemistry of Solids | Year: 2011

Polydispersed ZnO nanoparticles (ZnO1000 and ZnO600) with two different windows of particle size distributions (∼120 and 30 nm) were synthesized using citrate gel route and different annealing treatments (1000 and 600 °C, respectively). Photocatalytic efficiency of these samples was compared with TiO 2 in its commercial form-P25, on two dyes, Methylene blue (MB) and Methyl orange (MO). The X-ray diffraction data showed wrutzite ZnO and anatase and rutile phases of P25. UVvisible absorbance spectra of ZnO1000 showed broad absorption range from UV-to-visible (from 382 to 700 nm), as against sharp absorption peaks in UV range for both ZnO600 and P25. The microstructural morphology as seen through scanning electron micrographs showed ZnO1000 with tetrapod-like structures while the ZnO600 showed almost spherical morphologies. Upon subjecting these catalysts to dye solutions in sunlight it was found that both the dyes were completely decolorised within 20 min by ZnO1000, as against partial decolorisation by ZnO600 and P25 (53% and 78% for MO and 77% and 88% for MB samples). The effect of catalyst loading (from 125 mg to 1 g) on decolorisation showed that ZnO1000 had good efficiency for all concentrations which was followed by P25 and then by ZnO600. Small perturbations are attributed to the competition between sunlight scattering-induced, reduced irradiation field and the exposed surface area offered by catalyst, which work as active sites for decolorisation. The reusability of the catalysts when studied on fresh dye samples (4 trials), the decolorisation efficiency decreased merely from 99.2% to 99.12% for ZnO1000 as compared to ZnO600 (53.3% to 19.94%) and P25 (78.3% to 31.42%), indicating the efficient reusability of ZnO1000. The effective half life of the catalysts, in terms of number of reuses, were calculated and found to be ∼3 for both ZnO600 and P25 and was >3000 for ZnO1000, which justifies its extremely high reuse. The byproduct analysis (compared with standards prescribed by World Health Organisation (WHO) and Central Pollution Control Board of India (CPCB)) showed cleavage of the chromophore and of other bonds with opening of benzene rings, indicating degradation of the dyes in concurrence with decolorisation, in the stipulated time. Further, cytotoxicity studies performed on SiHa cell lines showed non-toxicity of the byproducts with ZnO1000 as compared to ZnO600 and P25. © 2010 Elsevier Ltd.

Thakur H.V.,Indian Defence Institute of Advanced Technology | Nalawade S.M.,Indian Defence Institute of Advanced Technology | Gupta S.,Indian Defence Institute of Advanced Technology | Kitture R.,Fergusson College | Kale S.N.,Indian Defence Institute of Advanced Technology
Applied Physics Letters | Year: 2011

We report a magnetic field sensor having advantages of both photonic crystal fiber and optofluidics, combining them on a single platform by infiltrating small amount of Fe3O4 magnetic optofluid/nanofluid in cladding holes of polarization-maintaining photonic crystal fiber. We demonstrated that magnetic field of few mT can be easily and very well detected with higher sensitivity of 242 pm/mT. The change in the birefringence values has been correlated to the response of nanofluid to applied field. © 2011 American Institute of Physics.

Qasim W.,Fergusson College | Mane A.V.,Fergusson College
Water Resources and Industry | Year: 2013

Food and milk processing industries consume large quantities of water. The food industrial effluents in general are characterized by high Biological Oxygen Demand and Chemical Oxygen Demand along with fats, oil-grease and many other recoverable nutrients like Nitrogen, Phosphorous and Potassium. In the present investigation thorough treatment studies were carried out on diary, sweet-snacks and ice-cream industrial effluents using alum, electrocoagulation and powdered activated charcoal as adsorbent. Characterization of the effluents was also carried out to check the pollution potential of these effluents. More emphasis was given on the representative water parameters mainly pH, Electrical Conductivity, Total Dissolved Solids, Chemical Oxygen Demand, Turbidity and Hardness. The electrocoagluation was performed with aluminum electrodes at different time intervals in order to check the variations in effluent parameters. Present studies revealed that electrocoagluation and adsorption have better ability to reduce the water parameters. © 2013 The Authors.

Kulkarni S.,Fergusson College
2015 International Conference on Pervasive Computing: Advance Communication Technology and Application for Society, ICPC 2015 | Year: 2015

For secure communication we always use different security algorithms e.g. Caesar cipher, modified Caesar cipher, IDEA, AES, RSA algorithm etc. and in data structures using C we have Linked list, stack, queue, tree and graph. In graph we have graph traversal i.e. BFS (Breadth First Search) or DFS (Depth First Search). This paper presents the new technique for security which is combination of Caesar Cipher and graph traversal, Binary search tree together then security will be much higher than only using Caesar cipher or graph traversal or binary search tree. © 2015 IEEE.

Loading Fergusson College collaborators
Loading Fergusson College collaborators