gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

Nowadays, using rail vehicles like metro is necessary for transportation in megacities and metropolises. In this descriptive-analytical study, whole body vibration was evaluated by two methods including basic evaluation and the recommended dose of vibration proposed based on ISO 2631-1 standard. In the present study measurements were performed over 13000 seconds in usual daily working hours by ...

learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...