Abstract: Tricyclic compounds represented by the following formula: ##STR1## wherein X represents --CH.dbd.CH--, --CH.sub.2 O--, or --O--;R.sup.1 represents a lower alkyl group,R.sup.2 represents a hydrogen atom or a lower alkyl group; andn represents an integer of from 1 to 5, pharmacologically acceptable salts thereof, and a method for preparing the same. The present compounds have anti-allergic and anti-histaminic activities and reduced side effects, and are useful as anti-allergic agents and anti-histaminic agents.

Abstract: Novel polycyclic compounds represented by the following formula: A--(CH.sub.2).sub.n --COOR.sup.1, wherein R.sup.1 represents a hydrogen atom or a lower alkyl group; n represents an integer of from 0 to 5; and A is a group represented by the following formula: ##STR1## wherein X represents a hydrogen atom or a halogen atom; and Y represents a methylene group, an oxygen atom, or a sulfur atom, or A is a group represented by the following formula: ##STR2## and pharmacologically acceptable salts thereof are disclosed. Also disclosed are a method for preparing the same, a pharmaceutical composition comprising the same, an antiallergic agent and an agent for bronchial asthma comprising the same, and a method for treatment of an allergic disease or bronchial asthma comprising the step of administering the same.

Abstract: A method for the treatment of pollakiurea in a subject in need thereof, comprising the step of administering to said subject an effective antipollakiurea amount of a propiophenone of the formula (I) ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each independently represents hydrogen, halogen, lower alkyl- or halogeno-lower-alkyl, lower-alkoxy, or cycloalkyl having 3-8 carbon atoms, two of which R.sub.1, R.sub.2, and R.sub.3 groups may combine to form methylenedioxy or ethyleneoxy, R.sub.4 represents hydrogen or a lower-alkyl, and A represents pyrrolidinyl-, piperidinyl-, morpholinyl-, or azepinyl or a pharmaceutically-acceptable acid addition salt thereof, is disclosed.

Abstract: An intake system for an automotive engine having cylinders, primary intake ports communicated with the cylinders, and secondary intake ports communicated with the cylinders. Each of the primary and secondary intake ports is communicated with a corresponding cylinder at a common intake valve. A primary intake manifold communicated with the primary intake ports and a secondary intake manifold communicated with the secondary intake ports are provided. A control valve is provided in each branch of the secondary intake manifold for controlling a counter flow of induced mixture. A vacuum operated actuator opens the control valve in dependency on an increase of engine speed and load on the engine.

Abstract: An intake system for an automotive engine having cylinders, primary intake ports communicated with the cylinders, secondary intake ports communicated with the cylinders. Each of the primary and secondary intake ports is communicated with a corresponding cylinder at a common intake valve. A primary intake manifold communicated with the primary intake ports and a secondary intake manifold communicated with the secondary intake ports are provided.A first valve is provided in each branch of the secondary intake manifold for preventing a counter flow of inducted mixture. A bypass is provided at a position downstream of the first valve for communicating the primary intake manifold with the adjacent secondary intake manifold, and a second valve is provided to be operated to open the bypass when load on the engine exceeds a predetermined partial load.

Abstract: A system for controlling the ignition timing of an engine has a probe provided on the wall of a cylinder of the engine opposite the piston in the cylinder. A capacitance-to-voltage converting circuit is provided for measuring the crank angle of the engine by the capacitance between the probe and the top of the piston and for producing an output dependent on the crank angle, and a second circuit is provided for measuring the velocity of flame propagation in the cylinder by detecting the ionization current flowing between the probe and the cylinder and for producing an output when the velocity is very high. An ignition timing control circuit is responsive to output of the converting circuit and second circuit for retarding the ignition timing so as to prevent the knocking of the engine.