Abstract: A lighting device includes a first light source portion, a light guide that includes a light guide body with an elongated shape, guides light incident from the first light source portion in a longitudinal direction of the elongated shape, and emits a first light including the guided light to illuminate an illuminated object, and a second light source portion that emits a second light to illuminate the illuminated object. The second light source portion is provided independently of the first light source portion and the light guide.

Abstract: Thiourea derivatives represented by the formula (I) ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a lower alkyl group, or R.sub.1 or R.sub.2 taken together represent a group having the formula --(CH.sub.2).sub.m --in which m is 4 or 5, R.sub.3 represents a lower alkyl group or a cycloalkyl group or a group having the formula--(CH.sub.2).sub.l --R.sub.4 in which R.sub.4 is a phenyl, naphthyl, pyridyl, furyl or thienyl group optionally having 1-3 substituents selected from the group consisting of lower alkyl, lower alkoxy, phenoxy, lower alkylthio, hydroxy, halogen, nitro, cyano and trifluoromethyl, and l represents an integer of 0 to 2 and n represents an integer of 1 to 5 or a physiologically acceptable salt thereof.The compounds of the invention are useful as a therapeutic agent for peptic ulcers which is also effective on prevention of the recurrence after discontinuation of the administration due to the antimicrobial activity against Helicobacter pyroli.

Abstract: Novel phenoxypropylamine derivative having the formula (I) ##STR1## wherein R.sub.1 and R.sub.2 represent a hydrogen atom, a hydroxy group, a lower alkyl group or a lower alkoxy group, and R.sub.3 and R.sub.4 represent a lower alkyl group, or R.sub.3 and R.sub.4 taken together represent a group having the formula (CH.sub.2).sub.m wherein m represents 4 or 5, and n represents an integer of from 2 to 6 or a pharmaceutically acceptable salt thereof.The compounds are useful as a 5-lipoxygenase inhibitor and an antiulcer agent.

Abstract: An exhaust gas purification system for internal combustion engines having at least two cylinders of which the port of each exhaust valve communicates with a port passage provided in the cylinder head, and a pair of the adjacent port passages communicate with a common port passage forming a siamese port passage therewith. A secondary air intake passage having a check valve communicates with the port passages for introducing secondary air by exhaust pulsation. In order to enhance the exhaust pulsation effect, the exhaust pipe connected to the opening of the common port passage has a constant cross section of a fixed diameter. Heat insulation is provided along the siamese port passage and a portion of the exhaust pipe for good oxidation of the unburned constituents. The total volume of the exhaust passage through the siamese port passage and the heat insulated exhaust pipe portion is equal to the displacement volume of the corresponding cylinders for introduction of a sufficient amount of the secondary air.