A novel flexure-based biaxial compression/shear apparatus has been designed, built, and utilized to conduct tribological studies of interfaces relevant to MEMS. Aspects of our new apparatus are detailed and its capabilities are demonstrated by an investigation of two interfaces for MEMS applications. Tribological tests may be performed with normal and tangential forces in the μN to N range and ...

Nowadays, soil reinforcement using polymer elements have been investigated by a number of researchers in order to increase the load capacity of soils. Reinforcing soils using fibers is a method of soil improvement, which offers a homogenous mixture in combination with soils, regarding their tensile strength. This combination maintains pressure loading capacity and properties in mutual resistant...

objective: the objective of this study is to evaluate verbal and mathematical skills among young children. method: the population of this study is composed of 5 and 6 years old children from nursary schools of the welfare organization in east of tehran. an 10 test on 218 children, was administrated and 120 individuals were selected as the subjects for the present study. the 10 of these subjects...