A novel coronavirus (COVID-19) was detected in China at the final of 2019 and has since caused a worldwide pandemic. This virus is transferred by airborne, sneezing, speaking. Because COVID-19 highly infectious through airborne contamination, high infection risk medium environment serious problem for both healthcare workers patients.

Bird dropping in terminology of stone deterioration pattern is a sub branch of deposit decay, means accumulation of exogenic materials, on stone surface, dropping has a main role in deterioration of buildings and stone monuments. Birds not only to build the nests and noisy cause to bother, but also due to transfer of variety disease into human, especially when it drops any place and then this d...

background and objective: needle stick injuries (nsis) are a common potential risk for healthcare workers. the aim of this study was to evaluate preventive interventions against needle stick injury incidents among hcws.   methods: seven hospitals in the iranian chaharmahal-va-bakhtiari province were surveyed between march 2008 to march 2013. data of the needle stick injuries of healthcare worke...

background: nowadays medical equipment plays an important role in the treatment and in the medical education. using outdated preventive maintenance (pm) system may cause problems in the cutting edge medical equipment, nervous system disease’s equipment (in diagnosis and treatment) which are crucial for every medical center. based on above facts we focused on nervous system treat units’ equipmen...

Purpose – The purpose of this paper is to develop a model that incorporates the effect of rejection cost on optimal maintenance planning decisions. Such a model will help in further modelling the interrelationships between preventive maintenance and quality control policy. Design/methodology/approach – In this paper a model is developed for obtaining optimal preventive maintenance interval base...

To evaluate the effect of a cyclooxygenase 2 inhibitor, celecoxib (CEL), on bladder cancer inhibition in a rat model, when used as preventive versus as curative treatment. The study comprised 52 male Wistar rats, divided in 5 groups, during a 20-week protocol: control: vehicle, carcinogen: 0.05% of N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN), CEL: 10  mg/kg/day of the selective COX-2 inhibitor...

1 Department of International Health, Boston University School of Public Health, Boston, Massachusetts, United States of America, 2 African Malaria Network Trust, Dar es Salaam, Tanzania, 3 Sustainability Science Program, John F. Kennedy School of Government, Harvard University, Cambridge, Massachusetts, United States of America, 4 Harvard Initiative for Global Health, Harvard University, Cambr...