Bottom pivot bearing acts as the supporting and rotating component of the important water Balloons Foil Bouquets conservancy structure.The wear in the turning and closing operation is directly related to the normal operation and reliability of the gate.To directly monitor the wear of the bearing under severe deep water working conditions, a novel t

Objective: By analyzing bacteriostasis and efficacy, the possibility of Artemisia argyi extract to be a plant extract preservative is clarified.It provides a message for the development of natural non-irritating plant extract preservative.Methods: Water and ethanol extracts of A.argyi were prepared.The content of its main active components was dete

Tolerance is defined as an interaction in which viruses accumulate to some degree without causing significant loss of vigor or fitness to their hosts.Tolerance can be described as a stable equilibrium between the virus and its host, an interaction in which each partner not only accommodate trade-offs for survival but also receive some benefits (e.g

While reconfigurable intelligent surface (RIS) technology has been shown to provide numerous benefits to wireless systems, in the hands of an adversary such technology can also be used to disrupt communication links.This paper describes and analyzes an RIS-based attack on Gift Card multi-antenna wireless systems that operate in time-division duplex