Abstract: The present invention relates to novel pyrimidine derivatives of the formulae (I-1) and (I-2) and pharmaceutically acceptable salts thereof which possess an excellent anti-secretory activity, pharmaceutical compositions containing same as an active ingredient, their novel intermediates, and processes for the preparation thereof: ##STR1## wherein: R.sub.4 and R.sub.5, which may be the same or different, are independently hydrogen or a C.sub.1 -C.sub.3 alkyl group, or jointly form a cyclopentyl or cyclohexyl ring;A is a group of formula(II): ##STR2## wherein R.sub.1 and R.sub.2 are, independently of each other, hydrogen or a C.sub.1 -C.sub.3 alkyl group, and R.sub.3 is hydrogen, a C.sub.1 -C.sub.3 alkyl group or a halogen; andB is 1-(substituted)-1,2,3,4-tetrahydroisoquinolin-2-yl of formula (III-1) or 7-(substituted)-4,5,6,7-tetrahydrothieno?2,3-c!pyridin-6-yl of formula (III-2) ##STR3## wherein R.sub.6 is hydrogen or a C.sub.1 -C.sub.3 alkyl group.

Abstract: A quinazoline derivative represented by formula(I) or a pharmaceutically acceptable salt thereof is useful for the treatment of peptic ulcer, wherein: ##STR1## R.sub.1 and R.sub.2 are each hydrogen or a C.sub.1 -C.sub.4 alkyl group; R.sub.3 is hydrogen or a halogen;R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9, which may be the same or different, are each hydrogen, a C.sub.1 -C.sub.4 alkyl group, a cyclopropyl group, or a C.sub.1 -C.sub.4 alkyl group substituted with a halogen; andR.sub.10 is a methoxy group.

Abstract: The detector comprises a disc-like reel table adapted to support a tape reel thereon, the reel table having a reflective underneath surface and an array of concentric spaced-apart cutouts uniformly disposed on the reflective surface along a common imaginary circle whose center coincides with a rotational axis of the tape reel, each of the cutouts having a light scattering surface capable of reducing the intensity of a light beam incident thereupon to an appreciable level. A light emitter is located in an opposing relationship with respect to the reel table for projecting the light beam toward the reflective underneath surface and the light scattering surface of the reel table. Positioned adjacent to the light emitter is a light receiver for receiving the light beam reflected back from the reel table to produce a pulse signal when the intensity of the received light beam varies over time in a pulse pattern.

Abstract: The present invention relates to a lid locking device for a video cassette having upper and lower cases and a lid mounted on the cases for movement between an open position and a closed position. The lid locking device comprises a lid lock having a pivot for mounting the lid lock within the upper and lower cases for pivotal movement between a lid locking position and a lid releasing position. The device further comprises a rounded groove in the upper side of a spring support member of the lid lock, a square projection on the lid lock comprising a convex portion, and a convex portion of the cassette at a point corresponding to the square projection.