The rotational speed of an overcrowded alkene-based molecular rotary motor, having an integrated 4,5-diazafluorenyl coordination motif, can be regulated allosterically via the binding of metal ions. DFT calculations have been used to predict the relative speed of rotation of three different (i.e., zinc, palladium, and platinum) metal dichloride complexes. The photochemical and thermal isomeriza...

Abstract To solve the problem that test environment is not equivalent to actual use in step-by-step method of fuze reserve chemical power supply, this paper proposes a source with an adjustable combination overload and rotational speed by building platform realize synchronization speed. In method, compressed air rotary table were used generate flight tool, then centrifugal force controlled load...

In the cholesteric (Ch) phase, director rotates when temperature gradient is applied along its helical axis, which is called Lehmann rotation [1]. However, this phenomenon is poorly reproducible; the experimental verification for the Lehmann rotation isn !Gt enough yet. In this situation, recently, it was found the texture on the droplet formed by the Ch phase (Ch droplet) rotates under the tem...

Horizontal directional drilling (HDD) is widely used in soil and rock engineering. In a variety of conditions, it is necessary to estimate the torque required for performing the reaming operation. Nevertheless, there is not presently a convenient method to accomplish this task. In this paper, to overcome this difficulty based on the basic concepts of rock engineering systems (RES), a model for ...

Background It has previously been shown that isotonic strength training can improve driver performance among golfers, though few studies have investigated effects of strength training on swing kinematics together with driver performance. In this study we investigated whether isokinetic rotational training could improve driver performance and swing kinematic variables amongst elite golfers. Me...

Friction stir welding is an innovative process for similar and dissimilar joining of the materials effectively. FSW simply modified grain structure also improved strength joints any type alloying elements. This experimental study planned to carry out such as aluminium alloys 5083 7068. Three different types tools are involved find ultimate tensile Vickers hardness. The tool straight cylindrical...