University of Rajasthan

About: University of Rajasthan is a education organization based out in Jaipur, India. It is known for research contribution in the topics: Chemical shift & Derivative (chemistry). The organization has 15058 authors who have published 15733 publications receiving 117400 citations. The organization is also known as: Rajasthan University.

Kinetic Studies of Bulk Ge22Se78−xBix (x=0, 4 and 8) Semiconducting Glasses

Abstract: Results of phase transformations, enthalpy released and specific heat of Ge22Se78–xBix(x=0, 4 and 8) chalcogenide glasses, using differential scanning calorimetry (DSC), under non-isothermal condition have been reported and discussed. The glass transition temperature, T g, is found to increase with an average coordination number and heating rates. Following Gibbs—Dimarzio equation, the calculated values of T g (i.e. 462.7, 469.7 and 484.4 K) and the experimental values (i.e. 463.1, 467.3 and 484.5 K) increase with Bi concentration. Both values of T g, at a heating rate of 5 K min–1, are found to be in good agreement. The glass transition activation energy increases i.e. 102±2, 109±3 and 115±8 kJ mol–1 with Bi concentration. The demand for thermal stability has been ensured through the temperature difference T c–T g and the enthalpy released during the crystallization process. Below T g, specific heat has been observed to be temperature independent but highly compositional dependent. The growth k...

Modulational instability of ion-acoustic waves in electron–positron–ion plasmas

Abstract: The stability of modulation of ion-acoustic waves in a collisionless electron–positron–ion plasma with warm adiabatic ions is studied. Using the Krylov–Bogoliubov–Mitropolosky (KBM) perturbation technique a nonlinear Schrodinger equation governing the slow modulation of the wave amplitude is derived for the system. It is found that for given set of parameters having finite ion temperature ratio (T i /T e ) the waves are unstable for the values of k lying in the range k min

Synthetic, magnetic, spectral, antimicrobial and antifertility studies of dioxomolybdenum(VI) unsymmetrical imine complexes having a N ∩ N donor system

Abstract: Unsymmetrical imine molybdenum(VI) complexes of the type [MoO2(L1)(L2)] formed by the interaction of dioxobis(2,4-pentanedionato)molybdenum(VI) in a 1:1:1 molar ratio with different imines derived from the reactions of sulphagunanidine, sulphamethazine, sulphapyridine and sulphadiazine with various aromatic aldehydes and ketones, have been prepared and the products characterized by elemental analysis, molar conductance, magnetic measurements and spectral studies. The complexes have also been tested in vitro. The antifertility screening data indicate the antiandrogenic nature of the complexes. The spectral studies suggest that all the ligands behave in a bidentate fashion, coordinating through the azomethine nitrogen (>C=N−) and other functional group NH as (N ∩ N) donors. Studies also reveal that the ligands react with dioxobis(2,4-pentanedionato)molybdenum(VI) to give diamagnetic mononuclear molybdenum(VI) complexes.