Speciation of Cobalt(II) complexes with succinic acid and L-glutamine in Tetra Butyl Ammonium Bromide – water mixtures

Speciation of cobalt(II) complexes with L-glutamine (Gln) and succinic acid (Suc) in varying concentrations (0.0-3.0%, w/v) of TBAB-water mixtures with pH-meter   has been made at an ionic strength of 0.16 mol dm-3 and temperature 303 K using a Control Dynamics-APX 175E/C pH meter. Various models for the species of these ligards are refined by using the computer programs SCPHD and MINIQUAD75.  The active forms of the Cobalt(II) are ML, ML2 and MLH for succinic acid and ML and ML2H for L-glutamine. The trend in the variation of protonation constants with dielectric constant is explained on the basis of electrostatic and non-electrostatic forces. The species distribution with pH at different solvent composition and the plausible equilibria for the formation of the species are also presented

A MODIFIED C-DUMP CONVERTER FOR PMSM MACHINE USED IN A FLYWHEEL ENERGY STORAGE SYSTEM

This paper presents a modified C-dump converter for permanent magnetic synchronous (PMSM) machine used in the flywheel energy storage system. The converter can realize the energy bidirectional flowing and has the capability to recover the energy extracted from the turnoff phase of the PMSM machine. The principle of operation, modeling, and control strategy of the system has been investigated in the paper. Simulation and experimental results of the proposed system are also presented and discussed

Process for the preparation of Dofetilide intermediates

N-methyl-2-(4-nitrophenyl)ethanamine of Formula-1 or its salt and 1-(2-chloroethoxy)-4-nitrobenzene are the key intermediates in the preparation of N-[4-(2-{[2-(4-methane sulfonamidophenoxy)ethyl] (methyl)amino}ethyl)phenyl]methanesulfonamide, is also known as Dofetilide. Current invention provides a process for the preparation of N-methyl-2-(4-nitrophenyl)ethanamine of Formula-1 or its salt and 1-(2-chloroethoxy)-4-nitrobenzene of formula-2. Formula-1 Formula-2

Scope of Nanotechnology in Radiation Treatment Planning

AbstractIn this paper an attempt has been made to study some of the elements of mathematical modeling in solid tumor growth. We present simple deterministic mathematical models used to describe tumor growth. Radiation therapy can be made very effective through the use of nanoscale particles such as gold nanoparticles, carbon nanotubes and magnetic nanoparticles. Development of a model using all the necessary biological assumption has been illustrated through an example. A large number of drug delivery systems have been developed over the years to overcome the challenges in cancer treatment and hence improve the right balance between effectiveness and toxicity. Finally we present various aspects of our methods and their results .The results demonstrate that the use of nanoscale particles in radiation treatment planning holds a lot of potential to improve the efficiency of the treatment

Synthesis and antimicrobial activity of novel 3,10-di-3-methyl-5-[(<i>E</i>)-2-aryl-1-ethenyl]-4-isoxazolyl-4,9-diaryl,2,3,4,9,10,11-hexahydro[1,3] oxazino[6′,5′:3,4]naphtho[1,2-<i>e</i>][1,3]oxazines

412-418Synthesis of novel bis-(isoxazolyl-1,3-oxazine)naphthalenes have been accomplished by utilizing Betti base as synthon. The key synthon, Betti base has been synthesized by reaction of isoxazole amine, aromatic aldehyde and 2,3-dihydoxy naphthalene in ethanol. The bis-(isoxazolyl-1,3-oxazine)naphthalenes have been screened for their antimicrobial activity