In the article, three types of proximity sensors that might be used in bicycle rangefinder to measure distance between and an overtaking car are compared. The influence various factors on accuracy measurements obtained using ultrasonic, infrared laser is tested, among others, light conditions, surface type colour, rain, pollination vibrations.

The ability to noninvasively detect regional dynamic myocardial damage related to action potentials and mechanical properties affected by heart disease is of great clinical importance. Though there are invaluable clinical tools for diagnosis of a broad range of cardiac conditions, such myocardial properties cannot be evaluated. We have previously shown that pulsive vibration occurs on the myoca...

A novel and efficient ultrasonic assisted-reflux synergistic extraction (UARSE) method for extracting camptothecin (CPT) and betulinic acid (BA) from Camptotheca acuminata Decne. fruits has been developed in this study. The advantages of the ultrasonic and reflux extraction methods have been combined in the UARSE method and used to extract CPT and BA for the first time. The parameters influenci...

Abstract Ultrasonic-assisted grinding (UAG) is the state-of-the-art process for machining of brittle-hard materials. In comparison to conventional processes, main advantages lie in reduction tool wear and forces. Such a vibration system based on resonant actuator power supply unit generating alternating current. Both units are interconnected by contactless energy transfer (CET) system. This con...

Ultrasonication has been used to accelerate chemical reactions. It would be ideal if ultrasonication-assisted chemical reactions could be monitored by suitable detection tools such as mass spectrometry in real time. It would be helpful to clarify reaction intermediates/products and to have a better understanding of reaction mechanism. In this work, we developed a system for ultrasonication-assi...

Parity and time invariance violating (P,T -odd) nuclear forces produce P,T -odd nuclear moments, for example, the nuclear Schiff moment. In turn, this moment can induce electric dipole moments (EDMs) in atoms. We estimate the contribution to the Schiff moment from the soft collective octupole vibrations existing in many heavy nuclei. Two possible mechanisms are considered, mixing of the ground ...