This work focused on determining the factors that are of key importance in the oxygen barrier properties of low-density polyethylene (LDPE).It has been shown that, depending on the type and amount of the low-molecular-weight compound (tetracosane, paraffin wax, paraffin oil) introduced into the LDPE matrix, it can contribute to the improvement or d
In this article, the relevance of the 53-264817 study of gears with a complex non-involute profile of the tooth flanks is justified.For the subsequent study of non-involute gearings, the task of mathematical modeling of the profile of a gear-cutting rolling tool for machining of noninvolute gear wheels is solved.As a profile of the tooth flank of a
Abstract Background To describe the recent diagnostic and treatment options for the most predominant form of primary vitreoretinal lymphoma (PVRL), namely diffuse large B cell lymphoma.This is mainly based on the experience at the Mayo Clinic as well as a partial review of the literature.MYD88 L265P mutation is seen in about 80% of cases; therefore
This study mainly focuses on the structural design, acoustic performance prediction, and experimental validation of a novel composite sound absorber that is similar to the feather surface structure of barn owls.The composite sound absorber is composed of an ultra-light nanofibrous membrane backed with a substrate porous materials layer (NMSPM).A th