Abstract: Heterocyclic compound represented by the formula I wherein represents or the like; R1 represents hydrogen atom, C1–C6 alkyl or benzyloxy; R2 represents methyl or nil; R3 represents hydrogen atom, C1–C6 alkyl, C2–C6 alkenyl, C3–C8 cycloalkyl or —CH2R5 [wherein R5 represents phenyl (which may be substituted with C1–C6 alkyl, halogen atom or cyano)] or thienyl; R4 represents C1–C6 alkyl, C2–C6 alkenyl, C3–C8 cycloalkyl or —CH2R6 [wherein R6 represents phenyl (which may be substituted with C1–C6 alkyl, halogen atom or cyano), naphtyl or thienyl]; or R3 is coupled with R4.

Abstract: Heterocyclic compound represented by the formula I wherein represents or the like; R1 represents hydrogen atom, C1-C6 alkyl or benzyloxy; R2 represents methyl or nil; R3 represents hydrogen atom, C1-C6 alkyl, C2-C6 alkenyl, C3-C8 cycloalkyl or —CH2R5 [wherein R5 represents phenyl (which may be substituted with C1-C6 alkyl, halogen atom or cyano)] or thienyl; R4 represents C1-C6 alkyl, C2-C6 alkenyl, C3-C8 cycloalkyl or —CH2R6 [wherein R6 represents phenyl (which may be substituted with C1-C6alkyl, halogen atom or cyano), naphtyl or thienyl]; or R3 is coupled with R4.

Abstract: Azaindolizinon derivatives or pharmaceutically acceptable salts thereof represented by the formula I: wherein R1 represents hydrogen atom, halogen atom or C1-C6 alkyl, R2 represents hydrogen atom, C1-C6 alkyl, C1-C6alkoxy, hydroxy, halogen atom, amino, acetylamino, benzylamino, trifluoromethyl or —O—(CH2)n—R5 (R5 represents vinyl, C3-C8 cycloalkyl or phenyl, n being 0 or 1), R3 and R4 respectively represent C1-C6 alkyl or —CH(R7)—R6 (wherein R6 represents vinyl, ethynyl, phenyl (which may be substituted with C1-C6 alkyl, C1-C6 alkoxy, hydroxy, one or two halogen atoms, di C1-C6 alkylamino, cyano, nitro, carboxy or phenyl), phenethyl, pyridyl, thienyl or furyl and R7 represents hydrogen atom or C1-C6 alkyl) or R3 is coupled with R4 to form indan or dihydrophenalene.

Abstract: In the capillary tube 22, the cross section of the outer surface is substantially square, and the cross section of the insertion hole 23 is substantially square. Sides La, Lb of the outer surface have high dimensional accuracy and the insertion hole 23 is made to allow two optical fibers 5, 6 to be inserted while adjoining each other and arranged in order therein. The phases of the outer surface and the insertion hole 23 are relatively offset with each other, so that angles &thgr;a, &thgr;b which the sides 23a, 23b of the insertion hole 23 form with flat surfaces 22a, 22b of the outer surface are acute angles of substantially 45°±0.5°. Consequently, the flat surface 22a becomes substantially parallel to the center line M that connects the centers of the cores 5a, 6a of the two optical fibers 5, 6 inserted in the insertion hole 23, and the flat surface 22b becomes substantially perpendicular to the center line M.

Abstract: An optical fiber splice device in which an optical fiber can be connected to a branch line side thereof as the need arises such as in the case where new subscribers join after a multiple optical fiber is connected to a trunk line side thereof. The device includes a plurality of glass capillary tubes, a body equipped with the plurality of glass capillary tubes in a middle portion thereof and a cover glass covering and protecting at least the region where the plurality of glass capillary tubes are provided. The ends of optical fibers of the trunk and branch lines are inserted in the glass capillary tubes to be spliced therein. The optical fiber ends has the coatings thereof removed. The body includes a mount portion in the middle thereof where the plurality of capillary tubes are provided in parallel, and first and second fixing portions on both sides of the mount portion for guiding and fixing the optical fibers to the glass capillary tubes.

Abstract: Each of a plurality of sinker elements on a needle bed having a plurality of knitting needles of a hand-operated knitting machine has a vertically extending, endwise open slot formed at its forward end. For casting on, an end segment of a knitting yarn is successively passed through the respective slots of the sinker elements to twist the end segment with another segment of the yarn forming a first row. Needle loops in the first row are drawn from between the twisted yarn segments, thereby providing a knit article with a closed edge which will not be loosened by a pull at the edge of the article.

Abstract: A small table-top hand operated weaving apparatus on is disclosed upon which various patterned fabrics can be woven by extremely simplified operations thereof. In the disclosed apparatus, each heald member is mounted for movement along an inclined path with let-off and take-up rollers located on the same side relative to the path of the healds so that the warp yarns turn their direction at an angle, such as a right angle, at the healds. The heald members are automatically positioned selectively to either of the two end positions of their paths in accordance with a heald selection program by a manual reciprocating movement of a heald selection carriage movable transversely along the apparatus in order to form a desired shed with the warp yarns.