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Rajkumar P.,Priyadarshini Engineering College
International Journal of Applied Engineering Research | Year: 2015

The oxidation of pentaamminecobalt (III) complexes of α-hydroxy acids by Perdisulphuric acid(PDS) in micellar medium yielding nearly 100% of carbonyl compounds and 100% Co(II) are ultimate products. In this reaction the rate of oxidation shows first order kinetics each in [Co(III)] and [PDS]. The unbound α-hydroxy acids yield about 100% of carbonyl compounds in presence of micelles. The rate of oxidation of Co(III) complexes of both bound and unbound α-hydroxy acids are enhanced more in the presence of cationic micelle of Cetyl trimethylammonium bromide (CTAB), when compared to the anionic micelle of Sodium laurylsulphate (NaLS) and non-ionic micelle of TRITON-X 100. The 1 mole of cobalt(III) complexes of α-hydroxy acids reacts with nearly 0.5 mole of Perdisulphuric acid, similarly 1 mole of α-hydroxy acids reacts with nearly 1 mole of Perdisulphuric acid. The appropriate methodology has been inducted. © Research India Publications.


Kumaresan A.S.,Priyadarshini Engineering College
International Journal of Applied Engineering Research | Year: 2015

Heart disease diagnosis leads to wrong treatment and wrong results even by experienced doctors. The patients need to undergo more number of tests which is expensive and time consuming. The objective of this paper is to predict and diagnose the heart disease more precisely and effectively. This paper uses the concept of similarity search in image database to search the matching image of the patient with the available database which contains history of images of old patients. The retrieved image is used for further treatment as per concept of case based reasoning and also based on the heart rate available in the database which helps to diagnosis the heart diseases. © Research India Publications.


Natarajan P.,Priyadarshini Engineering College | Velraj R.,Anna University | Seeniraj R.V.,Rajalakshmi Engineering College
Indian Chemical Engineer | Year: 2015

An experiment was conducted to acquire a set of systematic data on the solids circulation rate and solids holdup in the riser of liquid–solid circulating fluidized bed (lsCFB) to study the effect of solids feed pipe diameter. In the experiment, five kinds of solids feed pipes with inner diameter 9, 12, 22, 25 and 30 mm were provided. The result indicates that onset transitional liquid velocity, onset solids holdup, average solids holdup and solids circulation increase with increase in solids feed pipe diameter. The results substantiate that the solids feed pipe diameter plays an important role on the hydrodynamics of lsCFB in addition to operating liquid velocities (primary and auxiliary), size and density of solids, solids inventory and liquid viscosity. Based on the experimental data, correlations were proposed for predicting the maximum solids circulation rate, solids circulation rate and solids holdup, which could reproduce almost all experimental data with an accuracy of ±8%, ±13% and ±8%, respectively. © 2015 Indian Institute of Chemical Engineers.


Siddiqui N.-J.,Government Science College | Idrees M.,Government Science College | Khati N.T.,Priyadarshini Engineering College
South African Journal of Chemistry | Year: 2013

ABSTRACT The synthesis of novel derivatives of pyrazole-3-carboxylate (3-5) from methyl 4-(benzofuran-2-yl)-24-dioxobutanoate (1) is reported. Synthesis of substituted 134-oxadiazoles (7-11) and 5-amino pyrazole-4-carboxylate (12) derivatives starting from the 5-(benzofuran-2-yl)-1-phenyl-1H-pyrazole-3- carbohydrazide (6) are also described. Twelve new compounds were synthesized and their identities have been established on the basis of elemental and spectroscopic analysis such as IR 1H NMR 13C NMR Mass Spectra. The compounds were also screened for their antibacterial and antifungal activities against Gram-positive Gramnegative bacteria and a fungus.


Siddiqui N.-J.,Government Science College | Idrees M.,Government Science College | Khati N.T.,Priyadarshini Engineering College
Bulletin of the Chemical Society of Ethiopia | Year: 2013

Starting from 2-acetylbenzofuran derivatives 1a-d, methyl/ethyl 4-substituted/unsubstituted benzofuran-2-yl)-2,4-dioxobutanoate 2a-d and 3a-d have been synthesized by Claisen's condensation reaction with diethyloxalate. The transesterified product, 1,3-diketoester 2a-d on condensation with phenyl hydrazine undergo cyclization to afford the corresponding methyl 5-(substituted/unsubstituted benzofuran-2-yl)-1-phenyl- 1H-pyrazole-3- carboxylate 4a-d, which upon further condensation with hydrazine hydrate yielded 5- (substituted/unsubstituted benzofuran-2-yl)-1-phenyl-1H-pyrazole-3- carbohydrazide 5a-d. The structures of the newly synthesized compounds 2a-d, 3a-d, 4a-d and 5a-d were characterized by their elemental analysis and spectral studies such as IR, 1H NMR, 13C NMR and MS. All the synthesized compounds were screened for their antimicrobial activity. Most of the synthesized compounds showed high sensitivity against the selected bacteria and fungi at various concentrations. © 2013 Chemical Society of Ethiopia.

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