Abstract: A muographic observation instrument is constructed with a ground unit in which six gaseous detectors are attached to six detector sockets arranged to be parallel to a flat surface with a certain distance between them, and a pair out of ten radiation shields is placed between each detector socket mounted the shield sockets. Since the gaseous detectors have smaller spatial resolution compared to a usual scintillator detector, the thickness of lead plates used for eliminating the noise caused by electromagnetic shower from the horizontal direction can be made ? smaller, and therefore the weight of the whole device is decreased substantially. Furthermore, since only the gaseous detectors and radiation shields have to be mounted to the sockets of the ground unit, the installation of the device is simple.

Abstract: A muographic observation instrument is constructed with a ground unit in which six gaseous detectors are attached to six detector sockets arranged to be parallel to a flat surface with a certain distance between them, and a pair out of ten radiation shields is placed between each detector socket mounted the shield sockets. Since the gaseous detectors have smaller spatial resolution compared to a usual scintillator detector, the thickness of lead plates used for eliminating the noise caused by electromagnetic shower from the horizontal direction can be made ? smaller, and therefore the weight of the whole device is decreased substantially. Furthermore, since only the gaseous detectors and radiation shields have to be mounted to the sockets of the ground unit, the installation of the device is simple.

Abstract: The invention relates to elastic padded, washable, antiseptic articles for personal use, particularly for therapeutic equipment, pillows, protective garments and similar objects. According to the invention idea, an antistatic slip of max. 20 kg/m.sup.3 specific weight is filled with regularly cut, but irregularly arranged, static open cellular polyeter type pieces of polyurathane foam, the material of which is antiseptic.The invention includes the production, characterized in that in the course of preparing the polyurathane foam, 0.4-1.6 weight % enzymatic decomposition-inhibiting additive is added to the polyol component. The block of foam is split up, then cut to pieces with rotary and/or swinging knives, and the static pieces are blown from the knives into the slip to be filled.