abstract in the current decade the third world's countries are using of development rural tourism approach to improve indexes of development. in iran due to multiplicity of rural area using of this strategy is important. analysis the condition of host area for achieving positive tourism impacts is necessary. in this paper, the challenges and opportunities on developing rural tourism is distingu...

objective: various practical methods have been used for pregnancy diagnosis in sheep. methods of pregnancy diagnosis depending on visualization of the conceptus or determination of its secretory products in the maternal blood or in the milk are the most accurate and specific methods for pregnancy. in 1980, b-mode ultrasonography was introduced in the veterinary field and used for pregnancy diag...

Joints, which are usually located in the abutments of dams, play a vital role seismic stability evaluation arch dams. This paper presents comprehensive numerical investigation influence uplift pressure joints on response an dam, with focus interaction between dam and rock wedges. For this study, Bakhtiari having one wedge at each abutment, was chosen as case three distinct finite element models...