Thakare S.R.,Science College |
Karade N.N.,Rashtrasant Tukadoji Maharaj Nagpur University
Journal of Molecular Catalysis A: Chemical | Year: 2012
Well faceted CuO nanoparticles were synthesized by thermal-assisted green strategy at reflux temperature in a short period of time. A possible growth mechanism of such highly faceted nanostructures based on typical biomolecule-crystal interactions in aqueous solution is tentatively proposed. The large surface area (223.36 m 2/g) and rich exposed active sites are expected to endow such nanostructures with excellent performances in catalysis as demonstrated here for remarkable catalytic activity with respect to the N-arylation of indoles. Nanoparticles were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Both the activity and selectivity of the N-arylation reactions could be tuned by varying the concentration of CuO nanoparticles. Nanoparticles catalyst were recycled and reused for further catalytic reactions with minimal loss in activity. A variety of indole derivatives afforded corresponding N-arylation product with excellent yields (up to 98%). © 2012 Elsevier B.V. All rights reserved.
Thakare S.R.,Science College |
Wankhade A.V.,Visvesvaraya National Institute of Technology
Catalysis Communications | Year: 2015
A novel visible light driven photocatalyst of Ag2ZrO3 was prepared by solid-state reaction technique for the first time and the photocatalytic properties were investigated. Reactive powder of the photocatalyst was obtained by heating a 1:2 molar mixture of zirconyl oxychloride and silver nitrate at 900 °C up to 24 h and characterized by XRD, SEM, TEM, EDAX, and UV-visible diffuse reflectance spectroscopy. The photocatalytic degradation of aqueous methylene blue dye with Ag2ZrO3 as catalyst was investigated under visible light irradiation. The photocatalyst is superior over the known photocatalyst and has high stability and reusability. © 2014 Elsevier B.V. All rights reserved.
Rahangdale S.S.,Science College
Journal of Chemical and Pharmaceutical Research | Year: 2013
A copolymer was synthesized from o-cresol and adipamide using formaldehyde as a cross linking agent at 130 ± 2 °C in 2M HCl medium. The resin was characterized by elemental analysis, FTIR and NMR spectra. The morphology of the synthesized resin was studied by optical photograph and scanning electron microscopy (SEM). The o-CAF resin was tested for its inhibitory action against pathogenic bacteria and fungi. The resin show potent inhibitory action against bacteria such as Escherichia coli, Klebseilla, Staphylococcus aureus and Pseudomonas aeruginosa and fungi viz. Aspergillus flavus, Aspergillus niger, Pencillium species, Candida albicans, Cryptococcus neoformans and Mucor species. The total cation exchange capacity was measured and effect of pH and metal ion concentration on ion-exchange capacity were studied. The study was carried out over a wide pH range and in media of various ionic strengths. The copolymer resin is soluble in DMF, DMSO, THF, conc. H2SO4.
Basu B.,NRS Medical College and Hospital |
Sinha S.K.,Durham University |
Basu T.,Science College |
Mahapatra T.K.S.,RG Kar Medical College and Hospital
Pediatric Pulmonology | Year: 2015
Objective: Prediction of mortality among newborns on mechanical ventilation is difficult. Our aim was to develop a scoring system for predicting mortality among such neonates. Methods: This multi centre prospective study was performed to develop and validate a scoring system among two equal cohorts of ventilated newborns in India. Mechanical ventilator was used in pressure-limited time-cycled mode. Arterial blood gas, initial pulmonary pressures, septicemia screen along with other basic parameters were recorded in a pre-structured proforma. Blood samples were analyzed for malondialdehyde to determine the possible role and predictive validity of free radical injury. Multiple logistic regression analysis was done to find out independent predictors of mortality for the variables those were significantly associated with outcome after univariate analysis. Results: On univariate analysis, birth-weight, oxygenation-index, septicaemia, malondialdehyde level, and inotropic support were significantly associated with mortality. However, after multiple regression analysis gestational-age, pH and FiO2 lost their significance as predictors. According to cut-off values of ROC-curve, a scoring system ranging from 0 to 20 and four mortality risk groups were developed. Area under ROC-curve was 0.94, compared to 0.90 for both APACHE-III and CRIB-scores; and 0.92 for PRISM-score. Conclusions: Birth-weight, oxygenation-index, malondialdehyde level, inotropic support, and septicemia are independent mortality predictors of neonatal ventilation. Increase in malondialdehyde level is associated with higher mortality rate, indicating possible role of free radical injury. © 2014 Wiley Periodicals, Inc.
News Article | February 22, 2017
NEW YORK, Feb. 22, 2017 (GLOBE NEWSWIRE) -- Dr. Sharon Metcalfe, Interim Director of Nursing at Western Carolina University, has been selected to join the Education Board at the American Health Council. She will be sharing her knowledge and expertise on Nursing Education and Clinical / Didactic Testing. A photo accompanying this announcement is available at http://www.globenewswire.com/NewsRoom/AttachmentNg/0ead4c6b-51d4-40e9-90ea-cb328bbfeb1a With over a decade of experience in the field of Nursing Education, Dr. Metcalfe offers valuable insight in her role as the Interim Director of Nursing at Western Carolina University. Located in Cullowhee, North Carolina, Western Carolina University is a public regional institution of higher education that is committed to offering quality education at an affordable rate. Ranked as one of the top fifteen public regional institutions in the South, WCU give prospective students an opportunity to choose from more than a hundred and fifteen majors and concentrations ranging from Biology, Computer Information Systems, Spanish, Business Administration and much more. As the Interim Director of Nursing at Western Carolina University, Dr. Metcalfe’s day-to-day responsibilities include oversight of programs and forty facilities, management of scholarships, the university budget, and community groups. Prior to her role as the Interim Director, Dr. Metcalfe gained leadership experience as the Dean of Nursing for at Lees-McRae College and Mayland Community College. In the clinical setting, Dr. Metcalfe has served as the Director of Pediatrics (Denver, Colorado Children's Hospital), Director of Neonatal Services at Rose Medical Center (Denver, Colorado), and Nursing Administrator of Pediatrics, Critical Care, Intensive Care, and Neonatal Intensive Care at Wake Forest Medical Center-Baptist Hospital (Winston-Salem, North Carolina). In 1997, Dr. Metcalfe earned her Doctorate of Education in Adult and Community College Education from the North Carolina State University. She went on to complete a Bachelor of Science in Nursing degree and receive certification as a Registered Nurse from the University of Colorado. Dr. Metcalfe maintains affiliations with the North Carolina Nurses Association and Sigma Theta Tao. She serves on the Board of Directors for the Mountain Area Health Education Minority and Underrepresented Students Council, and the Board of Directors for the Social Services division of Asheville, North Carolina. Dr. Metcalfe’s desire to pursue Nursing Education developed through a natural progression. Looking back, she attributes her success to her supportive husband Lee and her loving son Trevor. Due to her commitment and dedication to the field of Nursing Education, Dr. Metcalfe has been awarded the 2016 Health Science College Award, 2006 100 Best Nurses Award, and 2005 Native American Teacher of the Year. Among her many accomplishments, Dr. Metcalfe has published three significant articles on mentoring, social determinants and educational barriers for diverse students, and the nature of cultural competency. In her free time, she enjoys traveling to Europe. As a certified Parent Child Interventionist, Dr. Metcalfe volunteers her time being a high risk parenting educator for the Department of Social Work conducting seminars for foster parents that struggle with difficult children during the fall of each year. Considering her future, Dr. Metcalfe hopes for continual growth in research, and education by teaching a RN to BSN program.
Gawande S.,Science College |
Thakare S.R.,Government Institute of Science
ChemCatChem | Year: 2012
Herein we report on the synthesis of a ternary polymer composite of graphene, carbon nitride, and poly(3-hexylthiophene) (G-g-C 3N 4-P 3HT) by a solvothermal method. The prepared polymer composite catalysts are characterized by TEM, XRD, FTIR spectroscopy, and photoluminescence techniques for their morphology, structure and photocatalytic efficiency. Graphene-loaded polymer composites of carbon nitride (g-C 3N 4) and poly(3-hexylthiophene) act as efficient photocatalysts for waste water treatment. Methylene blue is used as the model pollutant and the rate of its photocatalytic degradation with G-g-C 3N 4-P 3HT is three times higher than that achieved with a g-C 3N 4-P 3HT composite. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Gawande S.,Government Institute of Science |
Thakare S.R.,Government Institute of Science |
Thakare S.R.,Science College
Indian Journal of Chemistry - Section A Inorganic, Physical, Theoretical and Analytical Chemistry | Year: 2013
A one-pot synthesis of CdS-reduced graphene oxide (RGO) composite via sonochemical reduction of graphite oxide and simultaneous CdS formation is reported. The composite is characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction spectroscopy and UV-vis absorption spectroscopy and its photocatalytic performance is evaluated for the degradation of methylene blue. Results show that in the composite the RGO nanosheets are densely decorated by CdS nanoparticles, displaying a good combination between RGO and CdS. The CdS-RGO composite exhibits enhanced photocatalytic performance for the dye degradation with a maximum removal rate of 96% under visible light irradiation due to increased light absorption intensity as well as the reduced electron-hole pair recombination in CdS.
Pardeshi S.P.,Science College |
Patil S.S.,Science College |
Bobade V.D.,Science College
Synthetic Communications | Year: 2010
A mixture of N-chlorosuccinimide and 1,8-diazabicyclo[5.4.0]undec-7-ene oxidatively cyclizes structurally diverse acyl hydrazone, thereby providing an efficient and convenient method for the synthesis of various 2,5-disubstituted 1,3,4-oxadiazoles. The salient features of this method are mild reaction conditions, short reaction time, excellent yields, and simple workup procedure. Copyright © 2010 Taylor and Francis Group, LLC.
Chattopadhyay J.,Science College
Turkish Journal of Zoology | Year: 2011
Histomorphological study of the larval (final instar) osmeterium gland in Graphium agamemnon agamemnon Linnaeus shows that each fully protruded Y-shaped osmeterium is composed of 2 elongated hollow tubular arms, which arise from a basal peduncle. The surface of the osmeterium has irregular folds, and papillae arise from some cells. There is an oval opening (gland pore, structurally less complicated than in other evolved species) in the proximal second seventh of the segment on each tubular arm on its posterior face. Histologically, 2 main types of secretory cells can be observed (excluding the muscle fiber cells and supporting cells): i) ellipsoid gland cells within the gland pore region and ii) tubular arm cells extending from the upper part of the ovoid gland pore region to the distal part of the tubular arms. The defensive efficacy of the osmeterial secretion in larvae was also examined, both in the laboratory and field, and was observed to be very complicated. © TÜBİTAK.
Khasare S.B.,Science College
Pramana - Journal of Physics | Year: 2014
Author uses the condition in terms of contact point radial distribution function G(σ, λ(ηc, α)) containing the self-consistent function λ(ηc, α) and condition of continuity at σ/2 = contact point, to determine equation of state, (EoS). Different EoSs in terms of built-in parameter, m, can be obtained with a suitable choice of λ(ηc, α) and the present EoSs have less r.m.s. deviation than Barker-Henderson BH2 for LJ fluids, and results are much closer to molecular dynamics (MD) simulations than expectations and reproduce the existing simulation data and present EoS for LJ potential, with the help of a set of minimum single-scaled parameter, a0(ηc , α) for a given reduced temperature, T∗ = (1/β∈) = 1.4, 2, 3, 4, 5, 6. It has been found that parameter α = 1.059128388 can be used to fix up the critical temperature parameter Tc = 1. 3120(7) to that of a computer simulation result. © Indian Academy of Sciences