Dependence of new environmental nano organic semiconductor nickel-(II)-tetraphenyl-21H,23H-porphyrin films on substrate type for energy storage applications.

Characterization of organic nickel-(II)-tetraphenyl-21H,23H-porphyrin films as a function of substrate type was performed for energy storage applications and consequently environmental enhancement. Nickel-(II)-tetraphenyl-21H,23H-porphyrin films show an amorphous phase. They have a crystallite size of 8-11 nm. Strain caused a shift of different humps' positions. The measured transmittance has high values within the range of 85-91%, and the absorption coefficient values were included within the high-absorption region. Both optical gap and fundamental gap, refractive index, carrier-concentration-to-effective-mass ratio and lattice dielectric constant were calculated, and they were found to be increased, except refractive index and lattice dielectric constant. The obtained data indicated that nickel-(II)-tetraphenyl-21H,23H-porphyrin films are a candidate for energy storage applications.

Problem based learning in medical education.

Problem based learning, originally introduced in the Medical School at Mc-Master University in Canada in the late 1960s, and is now being used as a learning method in many medical schools in the United Kingdom and worldwide. Problem based learning have been adapted in many medical colleges of Nepal be used either as the mainstay of an entire curriculum or for the delivery of individual courses. Institution of Medicine, Tribhuvan University in 1980, BP Koirala Institute of Health Sciences at Dharan in 1999, KUSMS with the great support of faculties from Harvard University in 2001, Patan Academy of Health Sciences (PAHS), and lately all the affiliated medical colleges of Kathmandu University have adapted Problem based learning.