Since creation of universe there has been radiation around us and this rate is getting higher with the development of technology. Thus radiation shielding becomes important subject for researcher. Besides normal people especially radiation workers in nuclear facilities need extra protection from radiation. This is vital if we think about any kind of nuclear leakage or nuclear attack, fabric becomes very important. For this purpose, cotton-polyester type of fabric has been coated by barite and gamma ray attenuation efficient has been obtained. The fabric was coated in different rate of barite (0%, 40%, 50% and 60%) in order to test effect of barite rate on the fabric. The measurement has been performed for gamma ray energy of 511, 662, and 835 keV using gamma spectrometer system with NaI(Tl) detector. It was found that the attenuation coefficient has increased with the barite coating rate on fabric.

The use of rapidly developing technology in the modern world for the purposes of human needs facilitates social life. Today, the increasing demand for health systems with the developing technology has made technology an indispensable part of the health sector. Mobile health applications are widely used in health services to support health outcomes, improve public health, promote a healthy life in society, and reduce chronic diseases. Many digital applications that have become widespread in the health sector both provide convenience for health professionals in the health management process and provide instant access to data for health service recipients. In this study, information is given about the most popular mobile health applications in Turkey and in the leading countries in the field of mobile health: England, the United States, Canada, Australia, Denmark, Switzerland, the Netherlands, Finland, France, and Germany. Comparisons of applications were made, and areas of mobile health applications that were lacking were emphasized.