Electroluminescence of CdS nanoparticles-polyvinyl carbazole composites

157-160In the present study thin films of CdS nanoparticle-polyvinyl carbazole (PVK) composite have been prepared using chemical method. The absorption spectra and electroluminescence of the films doped with different concentrations of CdS nanoparticle have been measured. The absorption of pure PVK film starts at 290 nm wavelength in which a peak appears at 270 nm, indicating that the optical energy gap of PVK film is 4.26 eV. The absorption onset of CdS-PVK thin films is obtained at 300 nm, which gives the band gap of CdS nanoparticles as 4.13 eV. It is observed that the current varies linearly, whereas EL intensity varies non-linearly with increasing voltage. At a particular frequency, the emission starts at a particular threshold voltage and then it increases rapidly with increasing voltage. At a particular frequency and voltage, the EL intensity of the composite increases with concentration of CdS nanoparticles in PVK polymer and attains saturation at 5% CdS concentration. It is shown that the EL of CdS-PVK composites can be explained on the basis of electron acceleration-collision mechanism

A STUDY OF THE IMPACT OF THREE DAY TRAINING PROGRAMME ON KNOWLEDGE REGARDING BIOMEDICAL WASTE AMONG PARAMEDICAL STAFF OF DISTRICT HOSPITAL ETAWAH (UP)

Introduction: Biomedical waste by definition means “Any waste which is generated during the process of diagnosis, treatment or immunization of human or animal or in research activities pertaining there to in the production or testing of biological”Objectives:•    The level of awareness about various aspect of Bio Medical Waste management among the paramedical staff.•    To study the impact of three day training programme on knowledge of Bio Medical Waste management. Material & Methods: The present study  is a Cross sectional Study carried out to assess the impact of three day training programme on knowledge of Paramedical staff posted at District Hospital, Etawah. The change in knowledge was assessed using pre- test and post- test questionnaire.Result: A total of 72 paramedical staff participated in the study. Majority of the participants were unaware about the hazards associated with the improper handing f Biomedical wastes. The knowledge about the different color codes used for the segregation of biomedical waste was also very low. Similarly, the awareness about the vehicle used for the transportation of biomedical waste was also poor.Conclusion: The present study concludes that there is an urgent need for regular training for paramedical staff posted at District Hospital and other government hospital located in small District & town as awareness about the Biomedical waste among them is very low