Step fixings of vertical trench walls to prevent ground failure

Deep Cut-Off Walls constructed under Dams with Trench Cutters

Up to now, the BAUER Trench Cutter Cut-Off Wall (COW) technology has been developed for more than 20 years for use on large dams. The special task of a COW is to mitigate seepage and therefore COW's are utilized either on dam rehabilitation projects or on new dams as well. Seepage mitigation, for the long-term stability and the safety of dykes and dams, is a major issue to the designers. Cut-of...

High-Performance Shuffle Motor Fabricated by Vertical Trench Isolation Technology

Shuffle motors are electrostatic stepper micromotors that employ a built-in mechanical leverage to produce large output forces as well as high resolution displacements. These motors can generally move only over predefined paths that served as driving electrodes. Here, we present the design, modeling and experimental characterization of a novel shuffle motor that moves over an unpatterned, elect...

The survey of primary education course pattern to prevent from academic failure of dentistry students of Tehran Azad Dentistry University

Abstract BACKGROUND & AIM: According to the commonness of academic Failure and its well-known side- effects .the question that arises is how the primary education course should be to prevent the academic failure. Therefore this study performed on the different position managers of  Tehran Azad dental university to answer to this guest ion in year 2018 Materials and  Methods: This descriptive st...

Failure to prevent perinatal HIV infection.

Behavior of Vertical Boundary Elements in Steel Plate Shear Walls

The AISC Seismic Provisions and CSA S-16 Standard require a minimum moment of inertia for the vertical boundary elements (VBEs) in steel plate shear walls (SPSWs) to avoid undesirable VBE behaviors. The equation limiting VBE flexibility has been derived from a flexibility factor, ωt, developed in plate girder theory and the limit on VBE flexibility has been empirically specified based on previo...