The purpose of this research was analyzing factors affecting non-participation of stakeholders in rangeland management projects. The research method was descriptive-correlative design in ranches of Piranshahr rangelands in western Azerbaijan province, Iran. All ranches that studied (Zioke Yurd, Ziuke Mirgah Chaku, Khargedashan Yurd and Gardeh Bon), are utilized in common use manner. Simple rand...

root resorption (rr) is defined as the loss of dental hard tissues because of clastic activity inside or outside of tooth the root. in the permanent dentition, rr is a pathologic event; if untreated, it might result in the premature loss of the affected tooth. several hypotheses have been suggested as the mechanisms of root resorption such as absence of the remnants of hertwig's epithelial root...