Flexible protected 1,3,4-trihydroxy-2-butanone is synthesized in high enantiomeric excesses by using asymmetric homo- and cross- acyloin coupling of aliphatic aldehydes catalyzed by benzaldehyde lyase.

Flexible inhibitors are generally used in solid rocket motors (SRMs) as a means to control the burning of propellant. Vortices generated by the flow of propellant around the flexible inhibitors have been identified as a driving source of instabilities that can lead to thrust oscillations in launch vehicles. Potential coupling between the SRM thrust oscillations and structural vibration modes is...

A new type of non-pneumatic tire with a flexible spoke structure is proposed to solve traditional pneumatic defects, such as easy bursting, the requirement real-time maintenance keep pressure, and complex manufacturing process. The thermal mechanical coupling characteristics are studied in detail obtain steady-state temperature field distribution pattern under different operating conditions. un...

Abstract This paper investigates the nonlinear dynamics of a flexible tyre coupling via computer modelling and simulation. The research mainly focused on identifying basins attraction coexisting solutions formulated phenomenological model. On basis derived mathematical model, by assuming ranges variability control parameters, areas in which chaotic clutch movement takes place are determined. To...

Abstract The total electric field around the DC line is composed of both ion flow produced by coronae and electrostatic conductor charge. Under effect field, disconnected pole will generate a coupling voltage. Therefore, based on voltage, this paper proposes an adaptive reclosing scheme for flexible grid to prevent power supply interruption caused temporary fault. First, voltage (DPCV) under an...