Abstract: A game system is provided that is capable of imparting a novel game sensation to the user by operating together with a means that selects at least one option from among several options. In a game system, with which a lottery game in which at least one option is selected from a plurality of options, and a chain game in which the progression of the game changes on the basis of the game result of the first game are executed, in the chain game, region data is generated for arranging, in a plurality of game progression regions, a plurality of selectable regions that are linked to the plurality of options; and the region data is updated so as to set certain game progression regions as being acquired regions, on the basis of the options selected in the lottery game.

Abstract: A game system is provided that is capable of imparting a novel game sensation to the user by operating together with a means that selects at least one option from among several options. In a game system, with which a lottery game in which at least one option is selected from a plurality of options, and a chain game in which the progression of the game changes on the basis of the game result of the first game are executed, in the chain game, region data is generated for arranging, in a plurality of game progression regions, a plurality of selectable regions that are linked to the plurality of options; and the region data is updated so as to set certain game progression regions as being acquired regions, on the basis of the options selected in the lottery game.

Abstract: A desk-top centrifuge is provided which includes a switching element disposed between a dc power supply and a motor and a controlling circuit. The controlling circuit receives a voltage of power regenerated by the motor to provide a pulse width-controlled on-off signal to the drive switching element to control speed of the motor. The controlling circuit increases an on-duration in which the on-off signal is at an on-level at a given rate to turns the motor slowly. The centrifuge has a safety guard system made up of a door switch and a door lock switch which are installed in series between the dc power supply and the motor and work to establish electric communication between the dc power supply and the motor when the door is closed and locked.

Abstract: A desk-top centrifuge is provided which includes a switching element disposed between a dc power supply and a motor and a controlling circuit. The controlling circuit receives a voltage of power regenerated by the motor to provide a pulse width-controlled on-off signal to the drive switching element to control speed of the motor. The controlling circuit increases an on-duration in which the on-off signal is at an on-level at a given rate to turns the motor slowly. The centrifuge has a safety guard system made up of a door switch and a door lock switch which are installed in series between the dc power supply and the motor and work to establish electric communication between the dc power supply and the motor when the door is closed and locked.

Abstract: A ball balancer for minimizing a dynamic unbalance of a moving part of a rotating machine such as a centrifuge is provided. The ball balancer includes a rotary balancer casing having disposed therein balls. The rotary balancer casing is mounted on the moving part coaxially with an axis of rotation thereof and has formed therein an inner side wall which is so curved that the balls are lifted away from the bottom of the balancer casing along the inner side wall by the centrifugal force and biased toward the opposite side of an unbalanced mass of the moving part when the rotational speed of the moving part exceeds a resonant speed that is a rotational speed of the moving part when matched with a natural frequency of the moving part, thereby counterbalancing the unbalanced mass of the moving part. In an alternative form, the balls include a first group having a large diameter and a second group having a small diameter. The large-diameter balls and the small-diameter balls are arranged alternately.

Abstract: A compound having glutamate receptor inhibitor activity represented by the formula: ##STR1## where R represents a hydrogen atom or a group of the formula: ##STR2## m and n each represents an integer of 3 or 4 and p represents an integer of 0 or 1, or a salt thereof is provided. The compounds are useful for an insecticide.

Abstract: An antigen containing 3-methoxy-4-hydroxyphenylethylene glycol and represented by formula (I): ##STR1## (wherein R-NH is the residue of a polypeptide carrier R-NH.sub.2), and a method of producing an antibody to 3-methoxy-4-hydroxyphenylethylene glycol, characterized in that the method comprises immunizing an animal by using the antigen containing 3-methoxy-4-hydroxyphenylethylene glycol. The MHPG antigen of the present invention is capable of producing an MHPG antibody of high specificity. This antibody enables a precise determination of MHPG in specimens such as body fluid.

Abstract: A process for preparing hydrochloride of 3-acetoxy-2,3-dihydro-5-[2-(dimethylamino)ethyl]-2-(p-methoxyphenyl)-1,5-b enzothiazepin-4(5H)-one which comprises reacting 3-hydroxy-2,3-dihydro-5-[2-(dimethylamino)ethyl]-2-(p-methoxyphenyl)-1,5-b enzothiazepin-4(5H)-one which acetyl chloride in acetic acid or a mixed solvent of acetic acid and acetic anhydride. According to the process, hydrochloride of 3-acetoxy-2,3-dihydro-5-[2-(dimethylamino)ethyl]-2-(p-methoxyphenyl)-1,5-b enzothiazepin-4(5H)-one is readily obtained in one step.

Abstract: An apparatus and method for blow molding large hollow bodies, such as automotive fuel tanks and the like, is disclosed. A fluidized plastic material injection head is located above a given portion of rails. A plurality of mold carriers are disposed on the rails through wheels, each mold carrier carrying thereon mold halves. A clamping device is mounted on each mold carrier to clamp the mold halves together. A hydraulic press device is located near the injection head and presses the mold halves against each other to achieve a tight coupling of them when operated.

Abstract: A novel glutamate receptor inhibitor obtained from Joro spider venom glands, and its manufacturing method.

Abstract: An antigen consisting essentially of a catecholamine and a protein of polypeptide, wherein the protein or polypeptide is bonded to the phenyl nucleus of the catecholamine.