We describe the preparation of a compound whose molecules consist of two metal sandwich stands carrying tentacles with affinity to metal surfaces and holding an axle that carries a dipolar or a nonpolar rotator. The dipolar rotor exists as three pairs of enantiomers, rapidly interconverting at room temperature. When mounted on a gold surface, each molecule represents a chiral altitudinal rotor,...

This paper describes a method for creating object surfaces from binary-segmented data that are free from aliasing and terracing artifacts. In this method, a net of linked surface nodes is created over the surface of the binary object. The positions of the nodes are adjusted iteratively to reduce energy in the surface net while satisfying the constraint that each element in the surface net must ...

A 1:20 scaled three-bladed horizontal-axis tidal turbine is positioned in the wake flows of two wall-mounted obstacles: a square cylinder and combination cube front cylinder. The turbine's induction effects are examined with upstream flow measurements without operating at its optimal regime. In (at 0.07D hub extremity, D diameter), mean axial vertical velocities modified by whatever complexity ...

An experimental study carried out to observe the flexural capacity of reinforced concrete beams strengthened with Near Surface Mounted (NSM) steel bars is presented. The test was on nine beams. All tested were subjected two-point monotonic loads. ratio longitudinal reinforcement (1%, 1.4%, and 2.4%) NSM (1D16 2D16) used as variables. It found from result that significantly increase However, fai...

In this chapter we describe the design, development and application of the Helix Metamorphic Shield (HMS). The HMS: (1) continuously shifts the program’s attack surface in both the spatial and temporal dimensions, and (2), reduces the program’s attack surface by applying novel evolutionary algorithms to automatically repair vulnerabilities. The symbiotic interplay between shifting and reducing ...