Marine flexible pipe/cables, such as umbilicals, flexible pipes and cryogenic hoses, are widely adopted in ocean engineering.The reinforcing armor layer in these pipe/cables is the main component for bearing loads, which is a typical multi-layer helically wound slender structure with different winding angles for different devices.There has been no

Abstract We investigate positivity properties in quantum field theory (QFT).We provide evidence, and in some case proofs, that many building blocks of scattering amplitudes, and in some cases the full amplitudes, satisfy an infinite number of positivity conditions: the functions, as well as all their signed derivatives, are non-negative in a specif

As an increasing trend in tourism, many customers have been showing great interest in it, relying on credible and trustworthy sources of information.The purpose of this study is to examine the impact of different advertisement Tie Down Straps characteristics such as persuasive argument quality and source credibility on the visit intention of a tour

In this study, AISI 304, AISI 430 stainless steel AISI type 1050 steel butt welding has been applied and its effects on the microstructure and mechanical properties of these materials were investigated application.The combined stiffness of the specimen, tensile strength, and are compared with each other microstructural features have been examined.F