MAGNETIC FIELD, PRESSURE AND TEMPERATURE DEPENDENT OPTICAL PROPERTIES IN A GaAs 9.0 P 1.0 QUANTUM DOT

Simultaneous effects of magnetic field, pressure and temperature on the exciton binding energies are found in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot. Numerical calculations are carried out taking into consideration of spatial confinement effect. The cylindrical system is taken in the present problem with the strain effects. The electronic properties and the optical properties are found with the combined effects of magnetic field strength, hydrostatic pressure and temperature values. The exciton binding energies and the nonlinear optical properties are carried out taking into consideration of geometrical confinement and the external perturbations.Compact density approach is employed to obtain the nonlinear optical properties. The optical rectification coefficient is obtained with the photon energy in the presence of pressure, temperature and external magnetic field strength. Pressure and temperature dependence on nonlinear optical susceptibilities of generation of second and third order harmonics as a function of incident photon energy are brought out in the influence of magnetic field strength. The result shows that the electronic and nonlinear optical properties are significantly modified by the applications of external perturbations in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot

A quasi experimental study to evaluate the effectiveness of bibliotherapy on self esteem among adolescents in selected schools at Pudukkottai

A quasi experimental study to evaluate the effectiveness of bibliotherapy on self- esteem among adolescents at selected schools in pudukkottai was undertaken by Ms.G.Unaisy Vinolin in partial fulfillment of the requirements for the degree of Master of Science in Nursing at Karpaga vinayaga college of nursing under Dr. M.G.R Medical University, Chennai

ATTITUDE OF PLUS TWO STUDENTS TOWARDS PUBLIC EXAMINATION IN RELATION TO PARENTAL PRESSURE

This study examines the attitude of plus two students towards public examination and its relationship with parental pressure. The sample of the study comprised of 386 plus two students from Tirunelveli district. The authors employed survey method for collecting the data and they were analysed using descriptive and inferential statistical techniques. It was found that there is a significant relation between the attitude of students towards +2 public examination and parental pressure