Abstract: Based upon a running condition of an engine, the air-fuel ratio of the fuel mixture supplied to the engine is controlled by open loop control to a target air-fuel ratio. The engine includes a mechanism which adsorbs evaporated fuel from a fuel tank, and a purge conduit which supplies a purge gas which is a mixture of this adsorbed fuel and air to the engine in a predetermined running condition. The purge flow rate is changed according to change in the target air-fuel ratio by controlling the flow rate through the purge conduit according to the proportion between the target air-fuel ratio and a predetermined value. By doing this, deviations in the air-fuel ratio precipitated by purging are eliminated, and the accuracy of air-fuel ratio control is enhanced.

Abstract: A digital recording apparatus has a transporter and processor. (1). Long play mode: The transporter rotates heads and transports a recording medium at each first speed. The processor converts a first input signal supplied at a normal transfer speed with A/D conversion at a first sampling frequency to generate a first data of a quantization levels, converts the first data to a second data of a quantization levels with a first clock frequency and processes the second data which is supplied to the heads so as to be recorded in the medium. (2). High recording mode: The transporter rotates the heads and transports the medium at each second speed which is N times faster than the first.

Abstract: A servo circuit for a capstan motor has an element for recording a position detecting signal on a medium transported by the capstan motor, a magnetic head for reproducing the position detecting signal, a position detecting circuit for detecting a position error signal, a pulse generator for a pulse signal, a velocity detecting circuit for a velocity error signal, a phase comparator for comparing the phase of a clock signal and pulse signal and for outputting a phase error signal, a switch for selectively outputting the position error signal or the phase error signal, and a velocity control element for controlling the capstan motor by a velocity control signal.

Abstract: A chemiluminescence method for assaying compounds containing primary amino groups using 1-cyano-2-substituted benz(f)- or naphth(f)-isoindole fluorescers is disclosed. The 1-cyano-2-substituted benz(f)- or naphth(f)-isoindole (CBI or CNI) is formed by reacting a compound containing a primary amino group with naphthalene-2-3-dicarboxaldehyde or anthracene-2,3-dicarboxaldehyde in the presence of cyanide ion. The reaction product of hydrogen peroxide with an oxalate ester is then combined with the CBI or CNI to form an analyte which exhibits chemiluminescence. A detector is used to measure the chemiluminescence emission from the chemiluminescence derivatized analytes. Compounds containing primary amino groups which may be assayed according to the present invention include primary amines, amino acids, peptides and catecholamines. The method can also be adapted to the analysis of trace amounts of cyanide ion and hydrogen peroxide.

Abstract: Disclosed herein novel compounds, 2-substituted-4-thiazolidones having anti-peptic ulcer activity, and methods for producing the same.

Abstract: Derivatives of 2-substituted-phenylthiazole having the formula (I) ##STR1## wherein R.sup.1 represents a lower alkyl group of 1 to 3 carbon atoms, R.sup.2 represents a hydrogen atom or a lower alkyl group of 1 to 3 carbon atoms and n denotes an integer of 1 to 3, with the proviso that when R.sup.2 represents a hydrogen atom the positions 3, 4 and 5 of benzene ring thereof are not simultaneously occupied by methoxy group, posses anti-peptic ulcer activity.

Abstract: Disclosed herein novel compounds, 2-substituted-4-thiazolidones having anti-peptic ulcer activity, and methods for producing the same.

Abstract: Disclosed are novel high polymeric substances having saccharide side chains, suitable as a high polymeric material having several functions for medical treatments and a process for preparing thereof.

Abstract: Compounds of 2-substituted-phenyl-5-alkylthiazolidine-4-one having the formula (I) ##STR1## wherein R.sup.1 and R.sup.2 represent respectively a lower alkyl group of 1 to 3 carbon atoms and n denotes an integer of 1 to 3 possess anti-peptic ulcer activity.

Abstract: Compounds of 2-substituted-phenyl-1,3-perhydrothiazine-4-one having the formula (I) ##STR1## wherein R represents a lower alkyl group of 1 to 3 carbon atoms and n denotes an integer of 1 to 3 possess anti-peptic ulcer activity.

Abstract: 2-(3,4,5-trimethoxyphenyl)-4,5-disubstituted thiazoles, each of which has an anti-peptic ulcer activity, and methods for producing the same are disclosed herein.

Abstract: In a noise reduction system including a compressor and an expander having a complementary frequency response characteristic to the frequency response characteristic of the compressor, the compressor includes a high frequency emphasis variable frequency filter and a low frequency emphasis variable gain filter which are connected in a series circuit between input and output terminals and which respectively vary their parameters in response to the respective high and low frequency components of the compressor output. The expander includes a high frequency de-emphasis variable frequency filter and a low frequency de-emphasis variable gain filter which are connected in a series circuit between input and output terminals and which respectively vary their parameters in response to the respective high and low frequency components of the expander input.

Abstract: Disclosed are novel high polymeric substances having saccharide side chains, suitable as a high polymeric material having several functions for medical treatments and a method for producing thereof.

Abstract: Pharmaceutical compositions and a method for treating dermatophytes are based upon the antidermatophytic activity of o-methoxycinnamaldehyde.