One of the important factors affecting on the erosion is lithological characteristics in the watershed. Due to the characteristics of the watershed can be considered reaction of rock to the process of weathering and erosion in the study. In the research of erosion and soil conservation investigate the lithological characteristics of the study area is very important. According to the study area ...

  “Acoustic Neuronoma” is a benign neoplasm situated in a critical place, so that one can say its behaviour looks like malignant tissues. Three frequent clinical symptoms are associated with tumor with different sensitivity and priority, including vertigo and imbalance, tinnitus and hearing loss. Presence of one or all of these symptoms does not make the definite diagnosis and differntial diagn...

seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...