When Does Sexual Signal Exploitation Lead to Signal Loss?

Evolutionary loss of traits is common over evolutionary time and occurs in diverse taxa.Sexual signals and other non-signal traits should differ in their likelihood of becoming lost because they experience different selection pressures contributing to their diminution or persistence.In particular, conspicuous sexual signals are often exploited by n

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A New Filling Material for Cold Sleeve

The aim of this paper Car Sunshade is to review material properties of a new filling material for cold sleeve.The first experimental measurements were performed on samples to determine required material properties.Then the structural analysis was performed for a pressurized pipe with insufficiently welded root and installed cold sleeve.The case of

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