grain yield loss in rice (oryza sativa l.) caused by blast disease, magnaporthe grisea (hebert) barr, is a major concern of rice growers worldwide. blast is considered as the most injurious disease of rice in iran, resulting in severe loss especially to susceptible rice cultivars. in order to assess yield loss caused by blast pathogen and develop an appropriate model, different disease onsets a...

Job tasks that involve exposure to work-related musculoskeletal disorder (WMSD) risk factors may impact both the risk of injury and production downtime. Common WMSD risks factors associated with mining tasks include forceful exertions, awkward postures, repetitive motion, jolting and jarring, forceful gripping, contact stress, and whole body and segmental vibration. Mining environments that exp...

This paper explores the hazard classification method of blasting vibration on nearby buildings. The ratio self-vibration frequency f 0 protected buildings to main and actual measured peak velocity permissible safety regulations are used as two indicators method, index calculation formula was proposed, classified into four levels according index. An open pit mine project for monitoring, collecte...