Abstract: There is provided a synthetic resin leather having excellent durability against wrinkling and favorable texture without impairing flexibility of a synthetic resin layer when seated. A synthetic resin leather which is used as a skin material for a seat or chair, including: a base cloth layer formed of a knit fabric; and a synthetic resin layer which has flexibility and is joined to one surface of the base cloth layer, wherein the knit fabric is made of filament yarn having a thickness of 111 to 444 dtex and a surface side of the knit fabric is adhered to a back surface side of the synthetic resin layer.

Abstract: Provided is a synthetic resin leather having high flexibility and favorable strength, wear resistance with respect to repeated rubbing, and chemical resistance with respect to contact with a human body. A surface treatment agent including a mixture of a polycarbonate urethane and an ester urethane crosslinked with a carbodiimide is applied to a surface side of a film 1 constituted primarily of vinyl chloride resin, in order to form a surface treatment layer 1a having excellent flexibility, wear resistance and oleic acid resistance.

Abstract: A radiation detecting apparatus includes a pair of substrates disposed face to face in such a manner that a plurality of grooves provided in one of the facing surfaces at a predetermined interval face a plurality of grooves provided in the other of the facing surfaces at the predetermined interval. Radiation shielding plates are inserted at both ends thereof into a facing pair of grooves to be held by both of the substrates, scintillators are mounted on a corresponding one of the radiation shielding plates, and photodetectors are fixed to either one of the facing surfaces of the substrates between adjacent grooves so that a plurality of facing pairs of photodetectors are juxtaposed.

Abstract: A radiation-image photographing apparatus comprises a radiation source, a radiation detector disposed in opposition to the radiation source for detecting radiation through an object to be examined and to generate an electrical signal proportional to the amount of incident radiation, a scanning device for changing the relative, positional relationship between the radiation source and the radiation detector, an analog-to-digital converter for converting the output signal from the radiation detector to a digital quantity, a memory for storing the digital signal, an arithmetic unit, and a display unit.

Abstract: An automatic cyto-screening device calculates, from image signals obtained by scanning stained cells, the nuclear area of the cells and the nuclear area/cytoplasmic area ratio, and determines, from the calculated areas, which belong to a normal region, which belong to an abnormal region and an uncertain region in which normal and abnormal cells are present in the mixed state; these three regions are prescribed in advance, depending on the nuclear and cytoplasmic areas. The device also determines, according to the grey histogram of the nuclear density, whether cells which have been determined to belong to the uncertain region are normal or abnormal.

Abstract: A transducer included in an ultrasonic source is a concave ultrasonic transducer made of a piezoelectric material. The concave ultrasonic transducer is shaped into such body of revolution that a section of the transducer forms a revolutionary arc surface consisting of two arcs. Owing to the shape, an ultrasonic source similar to a conventional ring type source is constructed.