Numerical and Experimental Identification of Seven-Wire Strand Tensions Using Scale Energy Entropy Spectra of Ultrasonic Guided Waves

Accurate identification of tension in multiwire strands is a key issue to ensure structural safety and durability of prestressed concrete structures, cable-stayed bridges, and hoist elevators.This paper proposes a method to identify strand tensions based on scale energy entropy spectra of ultrasonic guided waves (UGWs).A numerical method was first

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Design of High-Power Red VCSEL on a Removable Substrate

In this work, the architecture Dryer Knob of a high-power InAlGaP/InGaP vertical-cavity surface-emitting laser (VCSEL) with an emission wavelength of 680 nm was studied.The design of quantum well, including the well thickness, indium composition, and barrier aluminum composition targeting the emission wavelength, was elaborately optimized.Moreover,

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Equipment and methods for poultry euthanasia by a single operator

Summary: Euthanasia of large poultry can be particularly challenging due to the difficulty of manual cervical dislocation of large older birds.Euthanasia is intended to swiftly render the animal unconscious and rapidly lead to death using humane methods.Euthanasia by a single operator can be challenging when euthanizing mature broiler breeders and

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Survey on health literacy and related factors among firefighters of emergency management departments in Southwest China

Abstract Objective Although health literacy (HL) has emerged as a critical public health concern, research on HL in emergency management departments is limited.This study aimed to investigate the awareness of Cocktail Sticks HL and associated factors among firefighters of emergency management departments in southwest China to provide a basis for ca

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