摘要:
An apparatus for measuring the ratio of alcohol contained in mixed fuel which flows through a fuel pipe to the engine. The fuel pipe is made of a high frequency signal permeable material such as rubber, teflon or nylon, for example. A microwave chamber is provided outside the fuel pipe, enclosing a part of the fuel pipe. The microwave chamber comprises a pair of wave guides opposed to each other with the fuel pipe interposed between them. One of the wave guides is provided with an antenna section for transmitting microwaves received from a microwave generator. The other wave guide is provided with a receiving antenna section for receiving the microwaves permeating through the fuel pipe through which the mixed fuel is flowing. The microwaves passing through the fuel pipe are attenuated according to the amount of alcohol in the fuel. The microwaves received by the antenna section are detected by a detector and converted to DC voltage signals which correspond to the strengths of the microwaves received and thus the amount of alcohol in the fuel.
摘要:
An antenna system for use in an automotive vehicle comprises a housing mounted on a body of the automotive vehicle and having at least a portion of an upper surface thereof made of a dielectric material which transmits radio waves, at least one planar antenna disposed rotatably within the housing to receive radio waves transmitted through the portion of the upper surface of the housing made of the dielectric material, and driving means for driving the planar antenna to effect scanning of a radio wave receiving direction to search for the radio wave receiving direction of higher sensitivity. The housing protects the antenna system and maintains the fine appearance of the automotive vehicle. Further, the housing has a shape like that of an air spoiler, which makes it possible to maintain the satisfactory aerodynamic characteristic of the automotive vehicle.
摘要:
A portable receiving antenna system for providing communication with a transmitting station carried by a geostationary satellite. The system includes a portable case, a flat plate antenna arranged to cover an opening of the portable case, and an adjustable support arranged within the portable case to support the flat plate antenna at an incident angle capable of receiving electromagnetic waves from the transmitting station. The flat plate antenna is in the form of a micro strip line slot array antenna including a dielectric layer, a metallic earth film formed with a plurality of spaced slots and secured to the surface of the dielectric layer in such a manner that the slots are arranged to receive the electromagnetic waves from the transmitting station, and a feeder line circuit secured to the rear surface of the dielectric layer. Preferably, an azimuth compass and a converter are mounted within the portable case, the converter being connected to an output terminal of the feeder line circuit.
摘要:
At least one microstrip antenna comprising a radiating conductor and a grounding conductor arranged on both sides of a dielectric substrate is mounted on a roof surface of an automobile. One or more feeders are each connected to a feeding position of the radiating conductor to excite the antenna in a higher-order mode.
摘要:
A side-looking array antenna system is disclosed in which the inclination angle of the antenna main beam is determined depending on the intervals of a plurality of antenna elements forming an array. A switch is provided to selectively connect one of the ports of an antenna feeder to a signal source or the like. The switch is used to select one of the ports of the antenna feeder as an excitation port, thereby reversing the direction of inclination of the antenna main beam. The antenna main beam can thus be directed in either of the two directions by the operation of the switch. Also, by using this antenna system, a Doppler radar vehicle speedometer with small calculation error, automotive radar and the like may be simply configured.
摘要:
A two-frequency planar antenna incorporates a resonant antenna and a slot antenna which are arranged in a superposed manner on the same dielectric substrate so as to be operable independently without interfering with each other. The two-frequency planar antenna includes a front conductor plate arranged on one surface of a dielectric substrate to serve as a radiation conductor plate of a resonant antenna and a slotted conductor of a slot antenna, a back conductor plate arranged on the other surface of the dielectric substrate to serve as a grounding conductor of the resonant antenna and a reflector of the slot antenna, and a slot antenna feed line embedded in the dielectric substrate. The slot antenna feed line is arranged along an axis where an electric field in an excitation mode of the resonant antenna is reduced to zero and at least one slot is formed in the front conductor plate along the feed line.
摘要:
A metal halide lamp having a luminous tube formed of translucent alumina as translucent ceramic in which additives of halides are sealingly included to emit at least red, blue and green light components, wherein an energy rate of a red light component is set to 55% to 75% and an energy ratio of a blue light component is set to 15% to 25%.
摘要:
Phenylacetic acid derivatives of the formula: ##STR1## wherein R.sup.1 is hydrogen or ##STR2## wherein R.sup.5 is an alkyl group of 1-6 carbon atoms or an aryl group; R.sup.2 and R.sup.3 are independently hydrogen or an alkyl group of 1-4 carbon atoms; R.sup.4 is hydrogen or an alkyl group of 1-4 carbon atoms, have been found to possess immunomodulating activity.
摘要:
Compounds of the formula (I): ##STR1## and pharmaceutically acceptable salts thereof wherein R.sup.1 and R.sup.2 are the same or different and each is hydrogen, hydroxy, halo, alkoxy of 1 to 4 carbon atoms or aralkyloxy of 1 to 4 carbon atoms and X and Y are each hydrogen or nicotinoyl are useful as anti-edema agents, anti-inflammatories, analgesics, anti-pyretics, anti-allergenics and anti-thrombosis agents.
摘要:
Novel 2-amino-4-nicotinoylamino-6-halogenophenyl-s-triazines and acid addition salts thereof, possessing strong anti-inflammatory action when the phenyl group is mono- or di-halogen substituted. The compounds are formulated into pharmaceutical compositions in bulk or dosage form, and are administered to humans and animals having inflammatory conditions or disorders until the same are reduced or overcome. The novel compounds are prepared by various procedures such as reacting a benzoguanamine which is halogen-substituted with an active derivative of nicotinic acid, and recovering the 2-amino-4-nicotinoylamino-6-halogenophenyl-s-triazines thus formed.