Tumkur, India
Tumkur, India

Tumkur University was established in 2004 in Tumkur, Karnataka, India. It was carved out of Bangalore University to accommodate the needs of the students from Tumkur district. Established under the Karnataka State Universities Act, 2000, as a multi-faculty university, it has 12 postgraduate departments, 2 constituent colleges and 94 affiliated colleges. It has established 29 research centres to promote advanced multi-disciplinary research and academic collaborations. In 2012, the University was recognized under section 12 of the UGC Act, 1956. In the same year, the National Assessment and Accreditation Council , an inter-university council of the UGC, accredited the University with "B" Grade in the three-grade rating scale. Wikipedia.

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Vidya Y.S.,LBSGFGC | Anantharaju K.S.,East-West Center | Nagabhushana H.,Tumkur University | Sharma S.C.,Chhattisgarh Swami Vivekananda Technical University
Journal of Alloys and Compounds | Year: 2014

Eco-friendly, cost effective and bio template route was used for the preparation of cubic Gd2O3:Eu3+ nanophosphors using Euphorbia tirucalli (E. tirucalli) plant latex as fuel. As - formed Gd2O3:Eu3+ (7 mol%, 1-7 ml), calcined Gd2O3:Eu3+ (7 mol%, 1-7 ml) and Gd2O3:Eu3+ (1-11 mol%, 7 ml) samples were characterized using XRD, SEM and UV-Vis absorption spectrophotometer. With increase in latex concentration, the nanophosphor gets transformed from nano plates to rose - like nanoflowers with size varying from 20 to 30 nm. X-ray diffraction pattern of as - formed product shows hexagonal Gd (OH)3: Eu3+ phase and it converts to pure cubic phase of Gd2O3:Eu3+ on calcination at 600 °C for 3 h. Rietveld refinement of Gd2O3:Eu3+ (7 mol%, 7 ml) revealed the presence of cations in the 8b (0.25, 0.25, 0. 25) and 24d positions (-0.0287, 0.00, 0. 25) and the anions in the 48e positions (0.39, 0.15, 0. 37) with space group Ia-3(206). The photoluminescence intensities of transitions between different J levels depend on the symmetry of the local environment of Eu3+ ion activators and the high ratio of intensity of (5D0 → 7F2) and (5D0 → 7F1) provides the conclusion that Eu3+ ion occupies sites with a low symmetry and without an inversion centre. The chromaticity and the CIE coordinates were very close to the standard red color region. The absorption observed in the excitation spectra shows the suitability of the nanophosphor obtained in this study for getting excited in UV, NUV and visible regions for variety of display applications. Further, the Gd2O3:Eu3+ (7 mol%, 1-7 ml) samples were experimented towards the photocatalytic behavior on Congo red (CR) and correlated with emission of PL intensity. The decolorization of dye was found to decreased from 83 to 54% with increase in the plant latex concentration. © 2014 Elsevier B.V. All rights reserved.

Bennadi D.,Tumkur University
International Journal of Pharmacy and Pharmaceutical Sciences | Year: 2013

Objective: The rational use of drugs or medicines is an essential aspect of achieving good and effective health care delivery and this is an essential goal of the WHO. 1Since drug therapy is a very important aspect of healthcare management, it follows that if drugs are misused or abused, this may have considerable effect on the overall outcome of the health of the individual members of a community and by extension, the whole community with attendant socio-economic implications. Hence the study conducted to estimate the prevalence of self-medication among patients visiting the outpatient department of Sree Siddhartha Dental College and Hospital, Tumkur. Methodology: This questionnaire based study was conducted among patients visiting to Siddhartha Dental College, Tumkur. Results: The prevalence of self medication was 96.46% among dental patients. Study showed, 96% of graduates practiced self medication and common in town area. Analgesics were commonly used for self medication. Common reasons for self medications were time constraints, previous experience of treating a similar illness. Conclusion: Health professionals have to spend some extra time in educating patients regarding the same. Improved knowledge and understanding about self-medication may result in rationale use and thus limit emerging microbial resistance issues.

Shivananda M.K.,Tumkur University | Shet Prakash M.,Tumkur University
Journal of Chemical and Pharmaceutical Research | Year: 2011

Cinchonic acids are the useful synthons for the preparation of quinoline derivatives. They were prepared by employing Pfitzinger reaction starting from isatins and 2-acetylfuran. 3- Aryloxymethyl-4-amino-5-mercapto-1,2,4-triazoles on reacting with cinchonic acids in the presence of phosphorus oxychloride yielded 2-(2-furyl)-4-(3-aryloxymethyl-1,2,4-triazolo[3,4- b]-1,3,4-thiadiazol-6-yl)quinolines. The structures of these compounds were confirmed on the basis of elemental analysis and spectral data. These compounds were screened for their antibacterial activities against gram-positive and gram-negative bacteria.

Shivananda M.K.,Tumkur University | Shivarama Holla B.,Sdm Institute Of Technology
Journal of Chemical and Pharmaceutical Research | Year: 2011

3-Aryl-2-methyl-quinazolin-4-ones 1 were treated with nitrofurfural diacetate 2 in presence of piperidine and drops of concentrated sulphuric acid to obtain 3-aryl-2-[(5-nitro-2- furfuryl)vinyl]quinazolin-4-ones 3 in fairly good yields. The structures of these compounds were confirmed on the basis of elemental analyses, IR, NMR and mass spectral data. These compounds were also tested for their antifungal activities.

Suresh D.,Tumkur University | Nagabhushana H.,Tumkur University | Sharma S.C.,Chattisgarh Swami Vivekanand Technical University
Materials Letters | Year: 2015

The study reports a facile green method for the effective reduction of graphene oxide (GO) using Cloves (Syzygium aromaticum) extract by a reflux method at 100°C for 30 min. Formation of a few layered reduced graphene oxide (rGO) was confirmed by XRD, TEM and UV-visible studies. Carcinogenic dye degradation and antioxidant properties of the rGO were evaluated. Methylene blue (MB) and Malachite green (MG) dyes were found to be eliminated completely within 20 min in dark condition in the presence of 20 mg rGO. The prepared rGO was found to have IC50 value of 1337 μg/ml towards quenching of DPPH free radicals. The investigation describes an environment friendly and cost effective method for the green reduction of GO to attain multifunctional rGO. © 2014 Elsevier B.V. All rights reserved.

Jogaiah S.,University of Mysore | Jogaiah S.,Yamaguchi University | Govind S.R.,Tumkur University | Tran L.-S.P.,Yamaguchi University | Tran L.-S.P.,RIKEN
Critical Reviews in Biotechnology | Year: 2013

Economically important crops, such as maize, wheat, rice, barley, and other food crops are affected by even small changes in water potential at important growth stages. Developing a comprehensive understanding of host response to drought requires a global view of the complex mechanisms involved. Research on drought tolerance has generally been conducted using discipline-specific approaches. However, plant stress response is complex and interlinked to a point where discipline-specific approaches do not give a complete global analysis of all the interlinked mechanisms. Systems biology perspective is needed to understand genome-scale networks required for building long-lasting drought resistance. Network maps have been constructed by integrating multiple functional genomics data with both model plants, such as Arabidopsis thaliana, Lotus japonicus, and Medicago truncatula, and various food crops, such as rice and soybean. Useful functional genomics data have been obtained from genome-wide comparative transcriptome and proteome analyses of drought responses from different crops. This integrative approach used by many groups has led to identification of commonly regulated signaling pathways and genes following exposure to drought. Combination of functional genomics and systems biology is very useful for comparative analysis of other food crops and has the ability to develop stable food systems worldwide. In addition, studying desiccation tolerance in resurrection plants will unravel how combination of molecular genetic and metabolic processes interacts to produce a resurrection phenotype. Systems biology-based approaches have helped in understanding how these individual factors and mechanisms (biochemical, molecular, and metabolic) "interact" spatially and temporally. Signaling network maps of such interactions are needed that can be used to design better engineering strategies for improving drought tolerance of important crop species. © 2013 Informa Healthcare USA, Inc.

Ramesh T.N.,Tumkur University
Particuology | Year: 2012

The diffusion of ammonia vapors into a solution of aluminum nitrate or ferric nitrate results in the precipitation of their respective hydroxides and oxyhydroxides. Polymorphic phase formation of aluminum hydroxide is controlled by the rate of crystallization. The PXRD patterns of products obtained via vapor phase diffusion revealed that poorly ordered aluminum hydroxide is formed during the initial stages of crystallization. After 8 days, the formation of the bayerite phase of aluminum hydroxide was observed. Upon prolonged exposure to ammonia vapors, bayerite was transformed into gibbsite. The infrared spectrum of the product confirmed the presence of different polytypic phases of aluminum hydroxide. The results demonstrated that the crystal structure of metal hydroxides is controlled by the rate of crystallization, nature of the metal ion, site selectivity and specificity and preparative conditions. © 2011 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

Sampath Kumar B.T.,Tumkur University | Vinay Kumar D.,Kuvempu University
Journal of Informetrics | Year: 2013

Study investigates the availability, persistence and half life of URL citations cited in two Indian LIS journals articles published between 2002 and 2010. This study also investigates how researchers can resurrect lapsed URL citations cited in research articles, using Wayback machine. A total of 1290 URLs cited in 472 research articles published in Indian LIS journals spanning a period of 9 years (2002-2010) were extracted. Study found that only 18.91% (1290 out of 6820) of URLs cited in these journal articles. 39.84% of URL citations were not accessible and remaining 60.15% of URL citations were still accessible. The HTTP 404 error message-" page not found" was the overwhelming message encountered and represented 54.86% of all HTTP error messages. However 51.06% URLs were recovered from HTTP 404 error message. Study also noticed that the half-life of URL citations was increased from 6.33 years to 13.85 years after recovering missing URLs from Wayback machine. © 2012 Elsevier Ltd.

Ramesh T.N.,Tumkur University
Inorganic Chemistry Communications | Year: 2011

Cobalt hydroxysalt exists in Co(OH)(NO 3), Co 2(OH) 3(NO 3), Co 3(OH) 4(NO 3) 2 and Co 7(OH) 12(NO 3) 2 compositions. Co 2(OH) 3(NO 3) has been prepared by varying the experimental conditions. The X-ray powder diffraction patterns of Co 2(OH) 3(NO 3) obtained by different methods exhibit significant changes in their peak positions and the relative intensities. Careful analysis of the X-ray powder diffraction patterns of Co 2(OH) 3(NO 3) samples reveals that it can crystallize in different polytypic modifications. The thermal decomposition studies show that the Co 2(OH) 3(NO 3) of 3R 2 polytype has better structural stability compared to Co 2(OH) 3(NO 3) of 1H polytype. © 2010 Elsevier B.V. All rights reserved.

Vyasanakere J.P.,Tumkur University | Shenoy V.B.,Indian Institute of Science
Physical Review B - Condensed Matter and Materials Physics | Year: 2015

Fermi gases with generalized Rashba spin-orbit coupling induced by a synthetic gauge field have the potential of realizing many interesting states, such as rashbon condensates and topological phases. Here, we address the key open problem of the fluctuation theory of such systems and demonstrate that beyond-Gaussian effects are essential to capture the finite temperature physics of such systems. We obtain their phase diagram by constructing an approximate non-Gaussian theory. We conclusively establish that spin-orbit coupling can enhance the exponentially small transition temperature (Tc) of a weakly attracting superfluid to the order of the Fermi temperature, paving a pathway towards high Tc superfluids. © 2015 American Physical Society.

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