With the majority of United States Department Agriculture-Natural Resources Conservation Service (USDA-NRCS)-sponsored earthen dams exceeding their planned service life, seepage is a concern since it common failure mechanism among as whole. Seepage occurs when water penetrates hydraulic barrier to create open pathways, channels, or piping leading internal erosion stability issues due increased ...

The article is devoted to the dynamic problems of studying strain state earth dams under impacts. A method developed for solving wave determine stress-strain structures, in particular, dams. Based on use finite difference method, an algorithm and calculation formulas were that have second-order accuracy time coordinates. advantage implementation complex nonlinear deformation models, taking into...

Large dams, especially concrete dams, have been designed against earthquakes since the construction of Hoover dam in the 1930s. The design criteria and methods of analysis used in those times are outdated today and the actual seismic safety of these structures is not known in view of today’s requirements. Earthquake action was usually taken into account pseudostatically, through an inertia forc...

The design of dams requires comprehensive studies to ensure the safety and feasibility these important engineering projects, as any possible failure case may lead considerable losses in human life properties. Specifically, analyses should be performed evaluate seepage, slope stability, soil liquefaction large earth dams. In this study, numerical modeling, based on finite element methods, was us...

Considering the fact that only pores can transport water, in homogeneous control volume are conceptualized as a three-dimensional orthogonal network of line elements, which is contrast to continuum hypothesis traditional numerical approaches. The related flow velocity, hydraulic conductivity and continuity equation equivalent model formulated based on principle balance. Subsequently, unified fo...

The interaction between three anthracycline antibiotics of second generation (9-deoxydoxorubicin, 9-DAM, 4-demethoxydaunorubicin, 4-DDM, 4'-deoxydoxorubicin, 4'-DAM) and DNA in the nucleosomal structure was investigated using fluorescence and circular dichroism techniques. The thermodynamic parameters of the binding process were obtained at different ionic strength and temperature conditions, t...