Kolhapur, India
Kolhapur, India

Shivaji University , established in 1962, is in Kolhapur, Maharashtra, India. It is spread over a sprawling campus of 853 acres . The university is named after the great Chhatrapati Shivaji Maharaj, founder of the Maratha Empire. It was inaugurated on 18 November 1962 by Sarvepalli Radhakrishnan, the then president of India. Yashwantrao Chavan and Balasaheb Desai took the lead in establishing this university. Kolhapur, Sangli, and Satara come under its jurisdiction with 279 affiliated colleges and recognised institutes. One of the major objectives behind its foundation was to cater to the regional needs of South Maharashtra. Wikipedia.

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A few points of scientific importance regarding the XRD data interpretation of the recently reported novel ZnAg3SbO4 are raised in this comment. The formation of AgCl (along with some impurities originating from Zn and/or Sb) rather than ZnAg3SbO4 is proved after comparison of the reported XRD pattern in the original paper and the simulated XRD pattern of AgCl in this comment. This journal is © the Partner Organisations 2014.

Bhalekar S.B.,Shivaji University
Pramana - Journal of Physics | Year: 2013

In this paper we analyse stability of nonlinear fractional order delay differential equations of the form Dα y(t) = a f (y(t - τ) - by(t), where Dα is a Caputo fractional derivative of order 0 < α 1. We describe stability regions using critical curves. To explain the proposed c Indian Academy of Sciences theory, we discuss fractional order logistic equation with delay. © Indian Academy of Sciences.

Sathe T.V.,Shivaji University
International Journal of Pharma and Bio Sciences | Year: 2014

Kolhapur region of Maharashtra, India provides very rich biodiversity due to high rainfall (700-6000 mm), temperature range 8° - 41°C, several types of water bodies and decaying organic matters of both plant and animal origin. The environment of Kolhapur thus, is very conducive for sand fly populations. The sand flies suck the blood of humans, domestic and wild animals and transmit diseases like Leishmaniasis (kalaazar), three day fever, yellow fever, oroya fever etc. in different parts of the world. Therefore, ecology and control measures of Phlebotomus sand flies (Diptera: Psychodidae) have been studied from Kolhapur, India. A total of 15 species of the genus Phlebotomus and Sergentomyia belonging to 9 sub genera have been reported. The seasonal abundance and life cycles in P. (E.) argentipes, P. (E.) glaucus and P. (I.) tubifer have been reported at 27±1°C, 70-80% R.H. and 12 hr photoperiod in the laboratory. They completed their life cycles from egg to adult within 25 days, 45 days and 52 days respectively. All above 3 species were very abundant in monsoon season than in winter and summer. Sergentomyia (S.) smithi, S.(N.) chalarni, S.(N.) malbarica, S.(G.) poonaensis and P.(E.) glaucus were mostly found in plains and in relatively less rainfall area. While, P.(I.) tubifer, S. (G.) indica, S.(N.) dhandai, S.(N.) chakravarti, S.(N.) hodssoni and S.(N.) iyengari were found mostly in forests and heavy rain areas. Hence, Kolhapur region is supposed to be a high risk area for sand fly borne diseases. Therefore, preventive and curative control measures are given in the text.

Shinde S.S.,Shivaji University | Rajpure K.Y.,Shivaji University
Journal of Alloys and Compounds | Year: 2012

We report study on the fabrication and characterization of an ultraviolet (UV) photodetectors based on N-doped ZnO films. The N-doped ZnO films with 10 at% N doping are spray deposited on to alumina substrates. The photoconductive UV detector based on N-doped ZnO thin films, having a metal-semiconductor-metal (MSM) configuration are fabricated using Al as a contact metal. The dependence of I-V characteristic under dark and illumination, spectral and transient photoresponse of the detector are investigated. The linear current-voltage (I-V) characteristics under forward bias exhibit ohmic metal-semiconductor contact. The UV photoconductive effect is observed showing fast response with switching on/off UV light illumination. The neutralization of photogenerated holes by negatively charged oxygen ion plays a key role in the photoconductive characteristics of N-doped ZnO polycrystalline films. © 2012 Elsevier B.V. All rights reserved.

Inamdar S.I.,Shivaji University | Rajpure K.Y.,Shivaji University
Journal of Alloys and Compounds | Year: 2014

Zinc oxide (ZnO) based metal-semiconductor-metal (MSM) ultraviolet photodetectors at different substrate temperatures were fabricated on glass substrates by economical chemical spray pyrolysis technique and its UV photoresponsivity was measured at room temperature. The samples were characterized with respect to their structural, morphological, and optical properties using various methods such as X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectroscopy, transmittance, reflectance etc. The synthesized ZnO thin films were c-axis oriented with hexagonal crystal structure as confirmed from XRD. All deposited films were specular and show high transmittance (∼85%) in visible region with steep fall off at 375 nm. The photoconductive MSM UV photodetector showed relatively high photocurrent (1.3 mA) and fast switching. ZnO thin films exhibited relatively high photoresponsivity (788 A/W) with cut of wavelength ∼375 nm signifying their application as UV detector. © 2014 Elsevier B.V. All rights reserved.

Jagtap U.B.,Shivaji University | Bapat V.A.,Shivaji University
Journal of Ethnopharmacology | Year: 2010

The genus Artocarpus (Moraceae) comprises about 50 species of evergreen and deciduous trees. Economically, the genus is of appreciable importance as a source of edible fruit, yield fairly good timber and is widely used in folk medicines. The aim of the present review is to present comprehensive information of the chemical constituents, biological and pharmacological research on Artocarpus which will be presented and critically evaluated. The close connection between traditional and modern sources for ethnopharmacological uses of Artocarpus species, especially for treatment against inflammation, malarial fever, diarrhoea, diabetes and tapeworm infection. Artocarpus species are rich in phenolic compounds including flavonoids, stilbenoids, arylbenzofurons and Jacalin, a lectin. The extracts and metabolites of Artocarpus particularly those from leaves, bark, stem and fruit possess several useful bioactive compounds and recently additional data are available on exploitation of these compounds in the various biological activities including antibacterial, antitubercular, antiviral, antifungal, antiplatelet, antiarthritic, tyrosinase inhibitory and cytotoxicity. Several pharmacological studies of the natural products from Artocarpus have conclusively established their mode of action in treatment of various diseases and other health benefits. Jacalin, a lectin present in seeds of this plant has a wide range of activities. Strong interdisciplinary programmes that incorporate conventional and new technologies will be critical for the future development of Artocarpus as a promising source of medicinal products. In the present review, attempts on the important findings have been made on identification; synthesis and bioactivity of metabolites present in Artocarpus which have been highlighted along with the current trends in research on Artocarpus. © 2010 Elsevier Ireland Ltd.

Jagtap U.B.,Shivaji University | Bapat V.A.,Shivaji University
Industrial Crops and Products | Year: 2013

A novel approach for the green synthesis of silver nanoparticles (AgNPs) from aqueous solution of silver nitrate (AgNO3) by using Artocarpus heterophyllus Lam. seed powder extract (ASPE), as a reducing agent has been reported in the present work. The seed contains Jacalin, a lectin which is a single major protein representing more than 50% of the proteins from the jackfruit crude seed extract having several biological activities. The reaction of ASPE and AgNO3 was carried out in an autoclave at 15psi, 121°C for 5min and the biosynthesis of the AgNPs in solution was monitored by measuring the UV-vis spectroscopy. The morphology and crystalline phase of the NPs were determined using transmission electron microscopy (TEM), selected area electron diffraction (SAED), scanning electron microscopy (SEM) with X-ray energy dispersive spectrophotometer (EDAX) and Fourier transform infrared spectroscopy (FTIR). The AgNPs synthesized were generally found to be irregular in shapes with an average size 10.78nm. The FTIR spectra indicated the role of amino acids, amides group I in the synthetic process. The AgNPs thus obtained showed highly potent antibacterial activity toward Gram-positive (Bacillus cereus, Bacillus subtilis and Staphyloccocus aureus) and Gram-negative (Pseudomonas aeruginosa) microorganisms. The results confirmed that the ASPE is a very good eco friendly and nontoxic source for the synthesis of AgNPs as compared to the conventional chemical/physical methods. Therefore, A. heterophyllus seed provides future opportunities in nanomedicine by tagging nanoparticles with jacalin. © 2013 Elsevier B.V.

Kabra A.N.,Shivaji University | Khandare R.V.,Shivaji University | Govindwar S.P.,Shivaji University
Water Research | Year: 2013

The objective of the present work was to develop a plant-bacterial synergistic system for efficient treatment of the textile effluents. Decolorization of the dye Scarlet RR and a dye mixture was studied under in vitro conditions using Glandularia pulchella (Sweet) Tronc., Pseudomonas monteilii ANK and their consortium. Four reactors viz. soil, bacteria, plant and consortium were developed that were subjected for treatment of textile effluents and dye mixture. Under in vitro conditions G. pulchella and P. monteilii showed decolorization of the dye Scarlet RR (SRR) by 97 and 84%, within 72 and 96 h respectively, while their consortium showed 100% decolorization of the dye within 48 h. In case of dye mixture G. pulchella, P. monteilii and consortium-PG showed an ADMI removal of 78, 67 and 92% respectively within 96 h. During decolorization of SRR G. pulchella showed induction in the activities of enzymes lignin peroxidase and DCIP reductase while P. monteilii showed induction of laccase, DCIP reductase and tyrosinase, indicating their involvement in the dye metabolism. High Performance Liquid Chromatography (HPLC), Fourier Transform Infra Red Spectroscopy (FTIR) and High Performance Thin Layer Chromatography (HPTLC) confirmed the biotransformation of SRR and dye mixture into different metabolites. Soil, bacteria, plant and consortium reactors performed an ADMI removal of 42, 46, 62 and 93% in the first decolorization cycle while it showed an average ADMI removal of 21, 27, 59 and 93% in the next three (second, third and fourth) decolorization cycles respectively for the dye mixture within 24 h. Consortium reactor showed an average ADMI removal of 95% within 48 and 60 h for textile effluents A and B respectively for three decolorization cycles, while it showed an average TOC, COD and BOD removal of 74, 70 and 70%, 66, 72 and 67%, and 70, 70 and 66% for three decolorization cycles of the dye mixture (second, third and fourth decolorization cycles), effluent A and effluent B respectively. Degradation of the textile effluents and dye mixture into different metabolites by the consortium reactor was confirmed using HPLC and FTIR. Phytotoxicity studies revealed the non-toxic nature of the metabolites of degradation of dye mixture, effluents A and B by consortium reactor. The developed consortial reactor system performed efficient treatment of the dye mixture and textile effluents, and can be used for treating large amounts of textile effluents when implemented as a constructed wetland by proper engineering approach. © 2012 Elsevier Ltd.

Tagetes patula is an annual flowering plant belonging to family Asteraceae. The present study deals with in vitro decolorization and remediation of a textile dye Reactive Blue 160 by T. patula. There was considerable (∼90%) decolorization of the dye within 4. d of incubation, as confirmed by UV-vis, HPLC and FTIR analysis. The enzymes responsible for the remediation were lignin peroxidase, tyrosinase, laccase and NADH-DCIP reductase which were found in root tissues of the plantlets. GC-MS analysis of the products revealed formation of six metabolites such as sodium benzenesulfonate, 6-chloro 1,3,5-triazine-2,4-diamine, disodium benzene-1,4-disulfonate, sodium 3-amino-4-hydroxybenzenesulfonate, 1-phenylmethanediamine and sodium 4-amino-3-carboxybenzenesulfonate after phytoremediation of Reactive Blue 160. Based on the FTIR and GC-MS results, the possible pathway for the biodegradation of Reactive Blue 160 has been traced. The non-toxic nature of the degraded products was confirmed by performing cytogenotoxicity tests on root tip cells of growing Allium cepa. © 2013 Elsevier Ltd.

Bhalekar S.,Shivaji University
Signal, Image and Video Processing | Year: 2012

Chaotic dynamics of the fractional order Uçar system involving time delay is studied. Modified Adams-Bashforth-Moulton method is used for numerical simulations. Effect of fractional order and delay on chaotic behavior of the system is studied. The two-scroll attractor is observed in the system for the range of fractional order 0. 5 < α ≤ 1. For the range 0. 2 ≤ α ≤ 0. 5, same system shows one-scroll attractor. © 2012 Springer-Verlag London Limited.

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