background : visceral leishmaniasis (kala-azar) is an endemic disease in some areas of iran. a cross- sectional study was conducted for sero-epidemiological survey of visceral leishmaniasis (vl) in baft district from kerman province, southeast of iran. methods: blood samples  were  collected  from children  up to 12 years old and 10% of adult population from baft villages with a multi-stage ran...

Resumo An experimental and numerical investigation was conducted into the factors that interfere in the shear strength of the concrete-concrete interface in structures composed of double lattice panels subjected to direct shear stress. The experimental program consisted of testing 26 direct shear models with varying widths of concrete fi lling of 7 cm, 9 cm and 13 cm, with smooth and rough inte...

In the course of development world civil construction, soil is a building material that can function as foundation structure. Clay type soft with fine grain characteristics. The has shrinkage property where when exposed to water it will expand according amount absorbed, but dry shrink its original dimensions non-directional compaction. consistency clay does not support safety supports. construc...

shear modulus and damping ratio are important input parameters in dynamic analysis. a series of resonant column tests was carried out on pure clays and sand-clay mixtures prepared at different densities to investigate the effects of aggregate content, confining stress, void ratio and clay plasticity on the maximum shear modulus and minimum damping ratio. test results revealed an increase in the...

This paper considers an inverse problem of shear stiffness imaging in a linear isotropic two-dimensional acoustic media, where the targeted parameter is the shear modulus μ. For given single component displacement data, the mathematical model to recover the shear modulus appears to be a first-order partial differential equation while a much simpler algebraic model, called the direct inversion, ...