Abstract:
An antibacterial drug having potent antibacterial activities upon various bacteria including resistant strains and high safety is disclosed, which comprises as an active ingredient, quinolone derivatives represented by the following formula (I), its salts or hydrates thereof: wherein R1 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, R2 represents a halogenomethoxyl group or an alkoxyl group, R3 represents an alkyl group, an alkenyl group, a halogenoalkyl group, a cyclic alkyl group, a heteroaryl group, an alkoxyl group or an alkylamino group, and R4 represents a hydrogen atom, a phenyl group, an acetoxymethyl group, a pivaloyloxymethyl group, an ethoxycarbonyl group, a choline group, a dimethylaminoethyl group, a 5-indanyl group, a phthalidinyl group, a 5-alkyl-2-oxo-1,3-dioxol-4-ylmethyl group, 3-acetoxy-2-oxobutyl group, an alkyl group, an alkoxylmethyl group or a phenylalkyl group. These substituents may further have additional substituents.
Abstract:
A foldable and simplified water tank characterized by a cylindrical shape and a side wall formed by a sheet made from synthetic resin, and the stiffness of said sheet, measured in accordance with the measuring method prescribed in Japan Industrial Standard L-1096 is from 100 to 1000. The water tank can be made to stand up by itself by only pouring water into it.
Abstract:
An optical fiber testing apparatus for testing an optical fiber as to presence and location of a fault such as breakage by inputting a pulsed coherent light beam to the optical fiber and synthesizing a return light beam reflected back from the optical fiber with a reference light beam having a frequency deviated from the pulsed light beam by a predetermined amount, wherein the synthesized waveform is detected through optical heterodyning. The electric signal obtained from the heterodyning detection is detected by an envelope detector, of which dynamic range is effectively virtually broadened by using correcting data prepared previously. The optical fiber test can be accomplished through a single measurement without involving expensiveness of hardware.
Abstract:
A method and a container for long-term storage in a state in which harmful insects do not propagate, in a case in which grains such as unpolished rice or the like are filled and stored. An inner bag (10) made of a flexible material is accommodated in an outer bag (12) which has high-strength. After grains are filled in the inner bag, the inner bag (10) is filled with carbon dioxide gas and is closed. The grains are stored in a state in which harmful insects are exterminated. It is preferable from the standpoint of the insecticidal effect that the inner portion of the inner bag (10) is able to maintain a carbon dioxide gas concentration of 40% or more for 7 days or more. Because the inner bag has the property of a CO.sub.2 permeation amount of less than or equal to 6300 cc/m.sup.2 .multidot.24 hr 1 atm, an oxygen-deficient state can be maintained.
Abstract:
A highly electrically conductive composite filament of sheath-core type, comprising core and sheath layers of an electrically non-conductive thermoplastic polymer and a middle layer of electrically conductive thermoplastic polymer containing carbon black between the core and sheath wherein said sheath partially surrounds the outer periphery of said middle layer.
Abstract:
In a radio communication system, a transmitting section of a substation comprises a controlling circuit (21) for controlling a carrier frequency of a local oscillator (24) in response to a frequency deviation signal. A burst generating circuit (26) generates a burst in response to the input signal, a burst control signal, and a local oscillation signal of the carrier frequency. The transmitting section further comprises a holding circuit (34) responsive to a frequency control signal and the burst control signal. During presence of the burst control signal, the holding circuit holds the frequency control signal received before a beginning of the burst control signal to keep the carrier frequency of the local oscillation signal invariable until an end of the burst control signal. Otherwise, the frequency control signal passes through the holding circuit as it stands. Consequently, the carrier frequency of the local oscillation signal is controlled only during absence of the input signal and is kept invariable during presence of the input signal.
Abstract:
The disc brake for a motor vehicle contains a caliper bracket to be secured to a vehicle body on the outer side of a disc rotor with respect to the vehicle body, a caliper body supported by the caliper bracket to be slidable in the axial direction of the disc rotor and a pair of friction pads disposed to oppose each other through the disc rotor. The caliper bracket contains a bracket main body and a connecting arm which are disposed respectively on the outer side and on the inner side of the disc rotor with respect to the vehicle body, as well as, a pair of caliper supporting arms, which connect the bracket main body with the connecting arm at their disc turning-in side end portions and at their disc turning-out side end portions, respectively. The bracket main body and the connecting arm have torque receiving portions at least on the disc turning-out side respectively to receive braking torques from the respective friction pads; the bracket main body has a disc turning-out side fixing portion, where the caliper bracket is secured to the vehicle body, located outer than the disc turning-out side torque receiving portion toward the disc turning-out side and substantially on the peripheral edge of the disc rotor.
Abstract:
This invention relates to a method for preparing a water soluble lacquer, which comprises dissolving polyethylene oxide having a molecular weight of at least 2,500,000 in water to form a polyethylene oxide aqueous solution, adding acid to said solution in such a manner as to adjust the pH of the solution in the range of from 3.0 to 5.0, heating the resultant solution at a temperature of not lower than 95.degree. C., cooling the solution and removing the remaining acid with an ion exchange resin.
Abstract:
This invention provides a quinolone derivative which exerts strong antibacterial action upon various bacteria and has high safety, and it relates to a compound having a structure of formula (I), its salts and hydrates thereof: {R1 and R2: hydrogen, alkyl; n: 1 to 4; Q: following structure (Ia): [R3: alkyl, alkenyl, halogenoalkyl, cyclic alkyl, aryl, heteroaryl, alkoxyl, alkylamino; R4: hydrogen, alkylthio; R5: hydrogen, amino, hydroxyl, thiol, halogenomethyl, alkyl, alkenyl, alkynyl, alkoxyl; X1: halogen, hydrogen, A1: nitrogen, structure of formula (II): (X2: hydrogen, amino, halogen, cyano, halogenomethyl, halogenomethyl, alkyl, alkenyl, alkynyl, alkoxyl; R4 and R3 or X2 and R3 may together form a cyclic structure; Y: hydrogen, various ester forming groups]}.