In radioactive source surveying protocols, a number of task-inherent features degrade the quality of collected gamma ray spectra, including: limited dwell times, a fluctuating background, a large distance to the source, weak source activity, and the low sensitivity of mobile detectors.Thus, collected gamma ray spectra are expected to be sparse and
Background Euthanasia is one of the most intriguing ethical, medical and law issues that marked whole XX century and beginning of the XXI century, sharply dividing scientific and unscientific public to its supporters and opponents.It also appears as one of the points where all three major religions (Catholic, Orthodox, and Islamic) have the same La
The terrestrial Judith River Formation of northern Montana was deposited over an approximately 4 Myr interval during the Campanian (Late Cretaceous).Despite having been prospected and collected continuously by palaeontologists for over a century, few relatively complete dinosaur skeletons have been recovered from this unit to date.Here we describe
The classification of hidden dangers in urban gas pipelines plays a vital role in the smooth operation of urban gas pipelines and in solving the problem of hidden safety dangers in urban gas pipelines.In recent years, the number and Lacrosse - Sticks - Complete proportion of polyethylene (PE) pipelines in urban gas pipelines are increasing day by d