Abstract This work CD Receiver proposes a battery-free wireless burglar alarm system based on LoRa backscattering.The system consists of multiple wireless nodes that send an alert when its sensor is triggered.The primary goal is to significantly reduce the power consumption of these wireless nodes, eliminating the need for battery replacements and
Medicine in the second half of the nineteenth century takes on some characteristics of modernity.These characteristics are worthy of our attention because they help us to understand better some of the current problems of hygiene and public health.One of the topics that was most discussed in the scientific-academic milieu of the second half of the n
Reattachment of amputated parts of the body (Replantation) has become a reality since the first arm replant was carried out six decades ago.Failures were not uncommon in the beginning, leading on to the analysis of the problem and refinements in technique.Improvements in sutures, instrumentation and better microscopes further helped the surgeons to