boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

in this thesis,spin dependend transport and electron transport through of ng/sg(graphene/ superconductor graphen) are studied in the junction of ng/fgt/sg. due to andreev reflection conductance increases in the presence of superconductor graphene.also, by applying a voltage gate on a superconductor, fermi level shifts and the conductance is independent of ferromagnatic substrate. also, the cond...

The plan of family physician is considered as a key solution for many problems of the health delivery system. Today, these services are offered in the form of electronic health records. It seems that the implementation of this project is encountered potential challenges. Considering that health care workers are EHR users, attention to their views is effective in the success of implementation of...

Background and Aim: Surveillance has defined the systematic collection, continuous, analysis and interpretation of health-related information required for the planning, implementation, and assessment of public health performance. This study was aimed to determine the standard structure and components of COVID-19 surveillance and comparison with the Iranian present surveillance system to identif...