Helmet is a product that is generally used when riding a motorcycle, the function of the helmet is to protect body parts especially the head when accident while driving.Many of helmet product still have deficiency both in terms of form of function, in this case helmet products still have any problems in their function.The shape of the helmet that i
Perfect vortices, whose ring profile is independent of the topological charge, play a key role in telecommunications and particle micro-manipulation.In this work, we report the compact generation of Flip Lever a new kind of double-ring perfect vortices, called double-ring perfect vector beams, by exploiting dual-functional silicon metaoptics.In par
Abstract Electromagnetic methods for non-destructive evaluation (NDE) are presented, with which sheet metal components can be identified and their material properties can be characterized.The latter is possible with 3MA, the Micromagnetic Multiparametric Microstructure and stress Analyser.This is a combination of several micromagnetic NDE methods t
The world is facing the global challenges of insecurity, poverty and climate change, which can impede food availability, production and nutritional security.Due to these factors, the production and availability of crop species such as legumes, pulses and cereals are declining, while some are gradually becoming extinct, which affects consumption.To
BackgroundPrisons are high-risk settings for the transmission of communicable disease.Robust surveillance systems are required to identify and control outbreaks.Wastewater surveillance for SARS-CoV-2 was introduced in four prisons in Wales in March 2022.We investigated its contribution to the COVID-19 surveillance programme.MethodsWe evaluated pris