Abstract: A riding vehicle includes: a main body supporting a wheel and on which a steering stay and a seat stay are erected at an interval in a traveling direction; a handle provided on the steering stay; a pedestal portion fixed to an upper end of the seat stay; a seat rotatably connected to the pedestal portion, and configured to switch between a riding state where the seat stands upright to cover the pedestal portion from above so as to be in an arrangement suitable for riding and a cart state where the seat is inclined in a traveling direction away from the steering stay to open an upper portion of the pedestal portion so as to be in an arrangement suitable for conveyance movement with baggage placed thereon; and a stopper interposed between the pedestal portion and the seat and regulating the seat in the riding and cart states.

Abstract: A riding vehicle includes: a main body supporting a wheel and on which a steering stay and a seat stay are erected at an interval in a traveling direction; a handle provided on the steering stay; a pedestal portion fixed to an upper end of the seat stay; a seat rotatably connected to the pedestal portion, and configured to switch between a riding state where the seat stands upright to cover the pedestal portion from above so as to be in an arrangement suitable for riding and a cart state where the seat is inclined in a traveling direction away from the steering stay to open an upper portion of the pedestal portion so as to be in an arrangement suitable for conveyance movement with baggage placed thereon; and a stopper interposed between the pedestal portion and the seat and regulating the seat in the riding and cart states.

Abstract: A roof rail includes a support member configured to be assembled on a roof of a vehicle, a first cover made from synthetic resin material, the first cover including a lengthwise-direction first end portion which is fixed to the support member and a lengthwise-direction second end portion which is supported by the support member to be expandable and contractible in a vehicle front/rear direction, and a second cover made from synthetic resin material, the second cover being supported by the support member to be expandable and contractible in the vehicle front/rear direction, the second cover including a lengthwise-direction end portion which is assembled to the lengthwise-direction second end portion of the first cover, wherein an outer surface of the lengthwise-direction second end portion of the first cover and an outer surface of the lengthwise-direction end portion of the second cover are coplanar with each other.

Abstract: A roof rail includes a support member configured to be assembled on a roof of a vehicle, a first cover made from synthetic resin material, the first cover including a lengthwise-direction first end portion which is fixed to the support member and a lengthwise-direction second end portion which is supported by the support member to be expandable and contractible in a vehicle front/rear direction, and a second cover made from synthetic resin material, the second cover being supported by the support member to be expandable and contractible in the vehicle front/rear direction, the second cover including a lengthwise-direction end portion which is assembled to the lengthwise-direction second end portion of the first cover, wherein an outer surface of the lengthwise-direction second end portion of the first cover and an outer surface of the lengthwise-direction end portion of the second cover are coplanar with each other.

Abstract: There are disclosed, a polyether ketone having a primary particle size of 50 ?m or less; and a method of producing a polyether ketone by a desalting polycondensation, which contains a step of conducting a polymerization reaction under a condition of deposition of the polymer. The polyether ketone obtained by the present invention has small particle size, high molecular weight and sufficiently small content of impurities such as alkali metal components.

Abstract: There are disclosed, a polyether ketone having a primary particle size of 50 ?m or less; and a method of producing a polyether ketone by a desalting polycondensation, which contains a step of conducting a polymerization reaction under a condition of deposition of the polymer. The polyether ketone obtained by the present invention has small particle size, high molecular weight and sufficiently small content of impurities such as alkali metal components.

Abstract: A method for producing an organic compound having Q, the method including a step of reacting a compound represented by general formula (2) with an organic starting material having at least one halogen atom bonded to a carbon atom having four &sgr; bonds so as to replace the halogen atom in the organic starting material with Q:

Abstract: An optical information recording medium comprising a transparent substrate and a recording layer formed thereon, wherein the recording layer contains an extended porphyrin compound represented by the following general formula (1): 1

Abstract: Provided is an optical recording medium in which per-pits in a ROM area have a depth of 250 nm or more and 350 nm or less; pre-grooves between the pre-pits have a depth of 30 nm or more and 170 nm or less; wobbling tracks have an amplitude of 25 nm or more and 110 nm or less; the product of the depth of the pre-grooves between the pits and the wobble amplitude of the track is 3100 or more; and pre-grooves in a RAM area have a depth of 130 nm or more and 250 nm or less. The optical recording medium is a hybrid disk having such good signal characteristics as satisfying the Orange Book standards.

Abstract: An optical recording medium has a recording layer, a reflective layer and a protective layer, all of which are arranged on a substrate. The recording layer contains a porphyrin compound represented by the following formula (1): ##STR1## wherein R.sub.1 to R.sub.8 independently represent a hydrogen atom, an alkyl group, an alkoxy group, an alkylcarbonyl group, an alkoxycarbonyl group, an alkylthio group or a halogen atom, R.sub.9 to R.sub.12 independently represent a hydrogen atom or an alkyl group, and X.sup.- represents an anion.

Abstract: There is provided with an optical recording medium comprising at least a dye-containing recording layer and a reflective layer laminated on a transparent substrate in this order which has a reflectance of 65% or higher, measured through the substrate, to a light beam having a selected wavelength (.lambda.1) of from 770 to 830 nm and has a reflectance of 15% or higher to a light beam having a selected wavelength (.lambda.2) of from 630 to 690 nm and which is recordable and reproducible with a laser beam having the wavelength of .lambda.1 and being reproducible with a laser beam having the wavelength of .lambda.2. In addition, the recording layer has a dye A having the absorption maximum at the wavelength shorter than 630 nm mixed with a dye B having the absorption maximum at the wavelength of from 630 to 900 nm. Alternatively, an interference layer is provided along with the recording and reflective layers.

Abstract: A single crystal growing method for producing a high-quality and large-diameter single crystal of a compound semiconductor with a good yield, is disclosed.A volatile element 2 is first put into a reservoir portion 1A of a quartz ampule 1. Further, a crucible 4 made of pBN, which contains a raw material 3A of a compound semiconductor, is placed in the quartz ampule 1, the vacuum sealing of which is then performed. While a vapor pressure controlling operation is performed, a furnace temperature distribution is controlled in such a manner that a vertical first temperature gradient .alpha. .degree. C./cm) in the vicinity of an outside wall of the quartz ampule corresponding to a raw melt 3B is smaller than a vertical second temperature gradient (.beta. .degree. C./cm) in a range above the top end of the crucible 4 and simultaneously, the temperature is gradually lowered. Furthermore, .alpha. ranges from 51/D.sup.2 to 102/D.sup.2 .degree. C./cm, and preferably ranges from 58/D.sup.2 to 83/D.sup.2 .degree. C.

Abstract: A process is disclosed which prepares a low pressure mercury vapor discharge lamp having a bulb and an end plate connected to the bottom of the bulb. The steps involve the application of an adhesive on one surface of the end plate, and the subsequent insertion of an exhaust tube into the end plate in such a way that an enlarged diameter portion of the exhust tube has an adhesive formed on this portion. As a result of the location and the structure of the steps, it is possible to provide a single step method of heating which functions to perform the essential bonding of all parts.

Abstract: A low pressure mercury vapor discharge lamp forms an electric discharge path by the use of a bulb placed on an end plate and the bulb is formed by a process which results in the connecting outer side surfaces of juxtaposed glass tubes through communication holes formed in the outer side surfaces respectively. The process involves placing the juxtaposed glass tubes so that their outer surfaces are opposed in a contacting state. A portion of each of the glass tubes is heated in order to form a communication hole through the utilization of a burner inserted through an open end into the interior of each of the glass tubes in order to cause fusion of that particular portion in each tube to thereby form the communication hole by wind pressure.

Abstract: Both legs (1a, 1b) of a U-shaped bulb are brought into a mutually contacting state or are opposed to each other with a space of gap (31) and end parts (1a', 1b') of the legs are directly put on an end plate (10) so as to form an electric discharge path in the U-shaped bulb. Since the legs (1a, 1b) are in contact with each other within limit of elastic deformation of a connecting part (2a) of the bulb (1), breakage of the bulb is avoidable even when an external force is applied to the bulb so as to bring the legs (1a, 1b) closer.