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Amet, India

Kannappan J.,Apicore Pharmaceuticals Pvt. Ltd. | Kannappan J.,Amet University | Jain N.,M. S. University of Baroda | Bedekar A.V.,M. S. University of Baroda
Tetrahedron Asymmetry

A series of exo N-((1R,2R,4R)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-yl)benzamides were prepared from (R)-isobornyl amine and screened as chiral solvating agents to discriminate the isomers of 1,1′-binaphthyl-2,2′-diyl hydrogenphosphates by 31P NMR analysis. A linear relationship between the experimental and calculated enantiomeric purity was established indicating the potential use of the system to determine the ee for samples of this acid of unknown enantiomeric purity. The amides were also screened for chiral discrimination of some α-substituted acids by 19F NMR analysis. © 2015 Elsevier Ltd. Source

An organic marine dye compound (7-bromo-6-chloro-3-[3-[(2R, 3S)- 3-hydroxy-2-piperidyl]-2-oxopropyl]-4(3H)-quinazolinone) was synthesized. The characteristics of this dye is soluble in water. The organic compound was made into a crystal by slow evaporation technique. The grown crystals were characterized by single crystal x-ray diffraction (XRD) analysis, FTIR studies and UV-visible transmittance studies and the NLO activity of the grown crystal has been checked by second harmonic generation (SHG) test. Source

Julius P.,Amet University
Biosciences Biotechnology Research Asia

Oil and gas production from the reservoirs are often accompanied by huge amount of water production which is the major problem faced in petroleum industry worldwide. Polymer gels have been successfully used for many years to control water production. Most methods involve crosslinking of partially hydrolyzed polyacrylamide- PHPA using organic or metallic crosslinkers. These polymer gels are formed in-situ under the reservoir condition which blocks the water producing zones thereby reducing the water production. This paper attempts to for the selection of suitable polymer and crosslinker concentration for Gandhar field in Cambay basin using gel study and core flooding analysis. Polymer is made gel using organic crosslinkers at stable reservoir temperature 90°C. Source

Umasankari J.,Annamalai University | Vanitha M.C.,Amet University | Sekar C.,Annamalai University
International Journal of Pharma and Bio Sciences

This study investigated the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) and methicillin sensitive Staphylococcus aureus in infected diabetic foot ulcers of 100 patients. Pus samples were collected and they were cultured by using appropriated methods. The S. aureus was the most common pathogen among the Gram-positive bacteria isolated from ulcers. Of the 65 Staphylococcus aureus isolated, 50 (76.92%) were found to be Methicillin resistant (MRSA) and 15 (23.07%) were Methicillin sensitive (MSSA). Methicillin resistance Staphylococcus aureus were tested for vancomycin resistance. It was concluded that patients with diabetes for long duration (more than 10-15 yrs) with high blood sugar level (350-450mg/dl) were predominantly affected and the foot ulcers were significantly higher in males (80%). The Methicillin resistance Staphylococcus aureus (MRSA) was sensitive to vancomycin and imipenem antibiotics and the minimum inhibitory concentration (MIC) of vancomycin for MRSA is 0.01μg concentration and MIC of methicillin for MSSA is 60 μg concentration. Source

Subramanian D.P.,Amet University
International Journal of Engineering and Technology

This paper presents a design of a Single Input Fuzzy Logic Controller (SFLC) based Static VAR Compensator (SVC) for Dynamic performance enhancement of power systems. The SFLC uses only one input which is the signed distance and has the advantage of reduced number of rules. Improvement of dynamic response by the controller is illustrated in a bifurcation perspective. Bifurcation diagrams of steady state as well as periodic solutions are constructed using continuation method. From the bifurcation diagrams, the existence of various bifurcation points such as, unstable Hopf bifurcation (UHB), stable Hopf bifurcation (SHB), saddle node bifurcation (SNB) and period doubling bifurcation (PDB) are identified. With the use of tools of nonlinear dynamics, voltage collapse points, and chaotic solutions due to period doublings are unearthed. The effectiveness of the SFL controller over the conventional controller for SVC in delaying the incidence of Hopf bifurcation (HBF), SNB and hence increasing the loadability limit is illustrated for the test system. Source

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