摘要:
Nitrogen oxides in exhaust gases are catalytically reduced in the presence of oxygen and ammonia at 200.degree. to 600.degree. C. over a catalyst of at least one catalyst component selected from the group consisting of compounds of metals of Groups 1B, 5A, 6A, 7A and 8 of the periodic table, and lanthanides and tin which is supported on a specific carrier comprising a main component of calcium silicate.
摘要:
An overhead cable includes an outermost surface formed by twisting together a plurality of segment strands. A plurality of spiral grooves form recesses having substantially rectangular cross-sections and are provided at intervals in a circumferential direction of either the outer surface of the segment strands or the outer surface regions of boundary portions where twisted segment strands adjoin each other. Thin segment strands and at least one thick segment strand form the outermost layer. A recessed portion is provided at one side surface among two surfaces of the segment strands forming the outermost layer, a projecting portion is provided at the other side surface, and the strands are twisted together so that the recessed portions and the projecting portions mate. The recessed and projecting portions formed at the two side surfaces of the segment strands mate with each other to form recess-projection mating portions, and the lengths of the contact of the recessed and projecting surfaces at the recess-projection mating portions is configured to be no more than 10% of the length of the recess-projection mating portions.
摘要:
A phase-locked loop circuit provides a phase comparator which receives input signals through a first input terminal, a loop filter which receives a first output and a second output of the phase comparator, and a voltage-controlled oscillator which produces output signals of an oscillation frequency proportional to the first output and the second output of the loop filter. The signals corresponding to the output signals produced by the voltage-controlled oscillator are supplied to a second input terminal of the phase comparator so that the phase of the signals supplied to the first input terminal of the phase comparator is compared with the phase of the signals supplied to the second input terminal. In the present invention, the loop filter comprises a first capacitor connected to the output terminal of the loop filter, second and third capacitors, each having a terminal connected to the output terminal of the loop filter, and a charging circuit for electrically charging the first, second, and third capacitors. The charging circuit is connected in parallel with the second capacitor. A discharging circuit for discharging the first, second, and third capacitors is connected in parallel with the third capacitor.
摘要:
There is provided an optical fiber ribbon capable of realizing, in an optical cable, sure reliability, a reduction in size and weight, higher density, and a further improvement in workability, a method of manufacturing the same, and an optical cable using such an optical fiber ribbon. An optical fiber ribbon 10 includes four single-core coated optical fibers 11 arranged in parallel on a same plane; and coupling parts 12 arranged at intervals in a length direction and a width direction, each coupling only adjacent two of the single-core coated optical fibers 11, wherein an interval P of the coupling parts 12 coupling the same two single-core coated optical fibers is not less than 20 mm nor more than 90 mm and a length Q of each of the coupling parts 12 is not less than 1 mm nor more than 10 mm.
摘要:
There is provided an optical fiber ribbon capable of realizing, in an optical cable, sure reliability, a reduction in size and weight, higher density, and a further improvement in workability, a method of manufacturing the same, and an optical cable using such an optical fiber ribbon. An optical fiber ribbon 10 includes four single-core coated optical fibers 11 arranged in parallel on a same plane; and coupling parts 12 arranged at intervals in a length direction and a width direction, each coupling only adjacent two of the single-core coated optical fibers 11, wherein an interval P of the coupling parts 12 coupling the same two single-core coated optical fibers is not less than 20 mm nor more than 90 mm and a length Q of each of the coupling parts 12 is not less than 1 mm nor more than 10 mm.
摘要:
In an optical fiber drawing device of the present invention, as an operational parameters corresponding to the real drawing speed in the duration from the moment of starting the operation of the optical fiber drawing device till the moment of reaching the target drawing speed are extracted from operational parameters stored in a operational parameter storage unit and applied to the optical fiber drawing device. The operational parameters include a base preform feeding speed, a target variation of real drawing speed, a gain multiplied by the speed element related with the variation of the real drawing speed, an operation cycle, a drawing furnace temperature, a coating resin pressure to coat the optical fiber, and flow of cooling gaseous helium, etc. The optical fiber drawing device of the present invention capable of a stable drawing control that does not generate hunting or overshoot or the like, while reducing the start-up fiber length (or speed increasing time) in the unsteady state (transient state) operation of the optical fiber drawing device.
摘要:
A transmission configured to change a gear position by rotation of a shift drum operative in association with an operation of a change pedal, including a potentiometer configured to detect a rotational angle of the shift drum; and a determiner configured to determine a gear position based on whether or not a value of a signal output from the potentiometer falls within a determination band having a predetermined range.
摘要:
In an optical fiber drawing device of the present invention, as an operational parameters corresponding to the real drawing speed in the duration from the moment of starting the operation of the optical fiber drawing device till the moment of reaching the target drawing speed are extracted from operational parameters stored in a operational parameter storage unit and applied to the optical fiber drawing device. The operational parameters include a base preform feeding speed, a target variation of real drawing speed, a gain multiplied by the speed element related with the variation of the real drawing speed, an operation cycle, a drawing furnace temperature, a coating resin pressure to coat the optical fiber, and flow of cooling gaseous helium, etc. The optical fiber drawing device of the present invention capable of a stable drawing control that does not generate hunting or overshoot or the like, while reducing the start-up fiber length (or speed increasing time) in the unsteady state (transient state) operation of the optical fiber drawing device.
摘要:
A signal address arithmetic circuit is used for performing address arithmetic required for executing such analog signal algorithms as adaptive predicative coding, adaptive bit allocation in predictive coding, adaptive transform coding, etc. The address arithmetic circuit is constructed of two counters, three registers, two selectors, a shift circuit an adder and AND gate circuits. The first selector selects either one of the first counter, the second counter or a first register, and its output is applied to one input terminal of the adder. The second selector selects either one of the second counter or the third register and its output is directly applied to the other input of the adder. The output of the adder and the content of the second register for each bit are applied to the AND gate circuits and its output is set in the third register, the content thereof being used for memory addressing. According to the type of processing algorithms and corresponding addressing modes, the arithmetic circuit performs the resetting or incrementing of the two counters, controlling the selection operation of the two selection circuits, controlling the number of shifts of the shift circuit, and resetting the third register.
摘要:
A transmission configured to change a gear position by rotation of a shift drum operative in association with an operation of a change pedal, including a potentiometer configured to detect a rotational angle of the shift drum; and a determiner configured to determine a gear position based on whether or not a value of a signal output from the potentiometer falls within a determination band having a predetermined range.