in this study, effective criteria on process of tourism areas selection were collected due to macro planning of capable areas to tourism sample regions in khorasan razavi province. then, their priority was carried out based on delphi method. after determining the relative weights and criteria priorities, the map of capable areas to planning tourism sample regions was obtained at the province le...

background: in the recent years, using health technologies to diagnose and treat diseases has had a considerable and accelerated growth. the proper use of these technologies may considerably help in the diagnosis and treatment of different diseases. on the other hand, unlimited and unrestricted entry of these technologies may result in induced demand by service providers. the aim of this study ...

this experiment was conducted to determine the effect of using l-threonine and reducing dietary levels of crude protein (cp) on egg production criteria in layers. three hundred of hy-line w36 laying hens were used in this experiment. this experiment consisted of three experimental treatments with five replications in each. experimental treatments included 3 diets with different levels of cp whi...