Abstract: The source region and gate electrode of a field effect transistor including a drain region and a gate electrode in addition to the source region are connected by a first ferroelectric capacitor. The drain region and gate electrode are connected by a second ferroelectric capacitor. A ferroelectric memory device suitable for high integration is provided.

Abstract: A polishing apparatus comprises a first surface plate for supporting a polishing object, a driving mechanism for rotating the first surface plate, a second surface plate arranged so as to oppose to the first surface plate, an abrasive cloth stuck to the second surface plate, a vibration detector attached to the first surface plate or the second surface plate for detecting vibration in polishing, a controlling portion for controlling polishing operation of the first surface plate and the second surface plate, and signal analyzing unit for analyzing vibration intensity detected by the a vibration detector through frequency analysis, integrating the vibration intensity relative to time, and transmitting a polishing stop signal to stop polishing operation of the first surface plate and the second surface plate to the controlling portion when variation in a resultant integral value relative to time is less than a first reference value or when the resultant integral value is less than a second reference value.

Abstract: A slurry contains MnO.sub.2 or other manganese oxide as a primary component of abrasive particles. Further, a polishing process using such a manganese oxide abrasive and a fabrication process of a semiconductor device using such a polishing process are disclosed.

Abstract: A slurry contains MnO.sub.2 or other manganese oxide as a primary component of abrasive particles. Further, a polishing process using such a manganese oxide abrasive and a fabrication process of a semiconductor device using such a polishing process are disclosed.

Abstract: The present invention provides naphthyridinium derivatives which are effective, for example, in diagnosis of diabetes, diabetic complications, dialysis-related complications, aging, diseases accompanied by aging, etc. and also provides an antibody prepared from said derivative as a hapten. The naphthyridinium derivatives of the present invention are compounds represented by the general formula (I): ##STR1## wherein R and R' may be the same or different and are alkyl groups optionally substituted with at least one amino group, at least one protected amino group, at least one carboxyl group, or combinations thereof, and their pharmaceutically accepted salts. It is possible to conduct the diagnosis of diabetes, diabetic complications, dialysis-related complications, aging, diseases accompanied by aging, etc. using a compound of the present invention as an indicator.

Abstract: The present invention relates to an agricultural and horticultural composition inducing resistance in plants against salt- and water-stresses which comprises as an active ingredient an effective amount of at least one cyclic dipeptide of the following formula (I) or an agriculturally or horticulturally acceptable salt thereof; ##STR1## wherein each of R.sub.1 and R.sub.2, which may be the same or different, is a hydrogen atom or lower alkyl group, or R.sub.1 and R.sub.2 are joined to form pyrrolidine ring which may optionally have hydroxy group, and R.sub.3 is a hydrogen atom or hydroxy group.

Abstract: The glycocyamidine derivatives of the present invention are represented by the following formula (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, is hydrogen or a lower alkyl group, preferably a straight or branched alkyl group having 1 to 3 carbon atoms, such as methyl, ethyl, propyl or isopropyl, and R represents hydrogen or an acetyl group,which are useful as test reagents for diagnosis of renal failure.

Abstract: The glycocyamidine derivatives of the present invention are represented by the following formula (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, is hydrogen or a lower alkyl group, preferably a straight or branched alkyl group having 1 to 3 carbon atoms, such as methyl, ethyl, propyl or isopropyl, and R represents hydrogen or an acetyl group.which are useful as test reagents for diagnosis of renal failure.

Abstract: The present invention is concerned with novel acylindole derivatives of the formula (I) and platelet-aggregation inhibiting agents containing them as an active ingredient. ##STR1## In the formula (I), either R.sub.1 and R.sub.2 is hydrogen, an alkyl group having 1 to 5 carbon atoms, an alkyl group substituted by at least one hydroxy group and having 1 to 5 carbon atoms, or a group of the formula ##STR2## in which R.sub.3 is an alkyl group having 1 to 5 carbon atoms, and --OR.sub.2 is a substituent at the ortho or para position.The compounds of the invention are useful as preventive medicine or remedy for various diseases or symptoms caused by platelet-aggregation, as well as inhibitors of platelet-aggregation on vascular walls during or after an operation.

Abstract: Pharmaceutical compositions containing an oxaluric acid derivative of the formula: ##STR1## wherein each of R.sub.1 and R.sub.2, which may be the same or different, is hydrogen; an alkyl group or a cycloalkyl group; or R.sub.1 and R.sub.2 are joined to form a heterocyclic ring with the nitrogen atom to which they are both attached; and R.sub.3 is hydrogen or an alkyl group. These compounds have excellent hypoglycemic effects with low toxcicity and safety.

Abstract: Pharmaceutical compositions containing imidazolidinetrione derivatives or pharmaceutically acceptable salts thereof having hypoglycemic and hypolipidemic effects. The compositions comprise as an active ingredient at least one imidazolidinetrione derivative of the formula: ##STR1## wherein each of R.sub.1 and R.sub.2, which may be the same or different, is hydrogen, an alkyl group, a cycloalkyl group or ##STR2## and each of R.sub.3 and R.sub.4, which may be the same or different, is hydrogen, halogen, a nitro group, a lower alkyl group or a lower alkoxy group.

Abstract: The present invention relates to novel hydantoin derivatives represented by the general formula (I) and pharmaceutical compositions containing them as an active ingredient. ##STR1## In the formula (I), X is hydrogen or a group having the formula --OR.sub.4, and each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, is hydrogen, an alkyl group or a cycloalkyl group.Hydantoin derivatives and pharmaceutically acceptable salts thereof of the present invention have excellent hypoglycemic, hypolipidemic and diuretic effects, as well as low toxicity and great safety. Therefore, the compounds of the present invention are not only useful as antidiabetics but also as drugs for hyperlipidemia.