In order to solve the problem of limited driving speed of piezoelectric actuators when the piezoelectric components are small and the driving frequency is low.This paper proposes a bi-directional piezoelectric stick-slip actuator, which mainly utilizes the combination of flexible drive foot and lever amplification mechanism to realize the displacem
In order to memorize sentences we use both processes of language comprehension during encoding and processes of language production during maintenance.While the former processes are easily testable via controlled presentation of the input, the latter are more difficult to assess directly as language production is typically initiated and controlled
Xylitol is a promising phase change material for thermal energy storage at low and medium temperatures, but its supercooling and low crystallization rate can hinder its performance in actual systems.This problem can be overcome with the application of external stimuli that promotes the nucleation and subsequent crystallization of the supercooled xy
Coriolus is the dried fruiting body of Coriolus versicolor (L.ex Fr.) Quel.C.versicolor (CV) is a worldwide-distributed fungus, which is common and widely used in primitive forests in the northern hemisphere.Polysaccharide, as the main active ingredient in CV, has a variety of biological activities, such as promoting immune function, antivirus, ant
Carotid blowout syndrome is a rare condition where blood extravagates from the carotid artery due to vessel damage.Frequently, this is an emergency that needs to be treated by endovascular stent deployment.Rarely, these stents erode through the blood vessel wall and extrude into the airway or oropharynx.Here, we present the case of a 48-year-old ma