Abstract: Irregular cross-sectional filaments made from a polyester and yarns and fabrics comprising the filaments, the cross-sectional profile of which filaments has a triangular part (A) and a flat projection part (B) connected to an angular portion of the triangular part and extending therefrom in a flat form, and satisfies the requirements (1) and (2): 0.7≦(L1/L2)≦3.0  (1) and 3.0≦(h2/h1)≦10.

Abstract: Irregular cross-sectional polyester filaments (which may be thick and thin type filaments) containing a polyester and having a cross-sectional profile which has

Abstract: A non-crimping polyester monofilament having an excellent resistance to abrasion and satisfactory mechanical strength and modulus has a intrinsic viscosity distribution such that the farther the location of a part of the monofilament from the longitudinal axis of the monofilament, the lower the intrinsic viscosity of a portion of polyester resin located in the part of the monofilament, wherein a peripheral part of the monofilament formed from a portion of the polyester resin having a lowest average intrinsic viscosity of 0.6 to 1.1 and concentrically surrounds a center part of the monofilament formed from another portion of the polyester resin having a highest average intrinsic viscosity, and the intrinsic viscosities the polyester resin portions for the peripheral and center parts of the monofilament is controlled by controlling the heat history of each of the portions of the polyester resin in a melt spinneret for producing the monofilament.

Abstract: A hydrouracil compound of the formula: ##STR1## or a pharmaceutically acceptable acid addition salt thereof, wherein A represents --CH.dbd.CH--CH.sub.2 -- or --CH.sub.2 CH.sub.2 --, and R represents hydrogen or methyl. Such compounds are useful as analgesics.

Abstract: A polycondensation product of a germanium trihydroxide compound of the formula: ##STR1## wherein W is hydrogen, alkyl, halogen, alkoxycarbonyl, carboxy, aryl, cycloalkyl which may be substituted, cycloalkenyl, heteroaryl or a group of the formula: (R.sup.1)(R.sup.2)N-- wherein R.sup.1 and R.sup.2 are each lower alkyl or R.sup.1 and R.sup.2 together with the adjacent nitrogen atom form a group of the formula: ##STR2## wherein R.sup.3 is hydrogen, lower alkyl, phenyl which may be substituted, aralkyl, acyl, acylamino or heteroaryl, and X is --N.dbd., --CH.dbd. or ##STR3## A is a bond, alkylene, alkenylene, --CO--Y--, --CONH--Y--, --O--Y--, --S--Y-- or ##STR4## (Y is alkylene); and R is alkyl. Such compounds are useful as agents for treating immune diseases.

Abstract: An imidazopyridine-spiro-piperi dine compound of the formula: ##STR1## or a pharmaceutically acceptable acid addition salt thereof, wherein X represents hydrogen, halogen or lower alkoxy, Y represents >N-- or >C.dbd.CH--, R.sup.1 and R.sup.2 both represent hydrogen or combinedly form a single bond, Alk represents lower alkylene, and R.sup.3 and R.sup.4 both represent hydrogen or combinedly form a single bond. Such compounds are useful as psychotropics.