摘要:
A process for preparing cyclopent-2-en-1-one derivatives of the formula ##STR1## wherein R.sub.1 is a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, andR.sub.2 is a hydrogen atom or a substituent which is not substantially brominated under the treating conditions, which comprises treating a cyclopentanone derivative of the formula ##STR2## wherein R.sub.1 and R.sub.2 are the same as defined above, with pyridinium hydrobromide perbromide.
摘要:
A plasma control method for an exhaust gas treating apparatus includes providing an exhaust gas treating apparatus having a plasma discharge space, a coil disposed on an outer circumference of the plasma discharge space, an upper electrode, and a lower electrode; generating plasma in the plasma discharge space; controlling the state of the plasma generated in the plasma discharge space by generating a magnetic field in the plasma discharge space between the upper electrode and the lower electrode; and cooling the reaction tube using a water cooled jacket disposed around the reaction tube. The magnetic field is generated by applying a current to the coil.
摘要:
According to one embodiment, there is provided a protection relay. The protection relay includes an input circuit that detects a state of an external device according to whether or not an external input voltage is larger than a preset threshold voltage. The input circuit includes switching unit that is made conductive by a divided voltage obtained by voltage-dividing resistors that divide the external input voltage when the external input voltage is higher than or equal to the threshold voltage, and a photocoupler that is operated by a constant current of a constant current output circuit supplying a constant current and outputs an operation signal to the operation unit when the switching unit is made conductive.
摘要:
To reduce the tendency of glossiness to vary according to the ink ejection quantity, a printing device includes a color ink head for ejecting color ink to a medium, a clear ink head for ejecting transparent clear ink to the medium, and a controller for controlling ejection of the clear ink so that the clear ink is ejected to a region in which an ejection quantity of the color ink per unit area of the medium is less than a predetermined quantity, and the clear ink is not ejected to a region in which the ejection quantity of the color ink per unit area of the medium is greater than the predetermined quantity.
摘要:
To make it possible to easily provide printed matter with varying degrees of gloss, a printing device includes a head for ejecting a photo-curing ink to a medium, a photo-irradiation device for radiating light to the photo-curing ink ejected on the medium and curing the photo-curing ink, and a controller for causing an ejection and curing operation to be performed for ejecting the photo-curing ink and subsequently radiating the light to cure the photo-curing ink, the controller being configured so that when an image having a first degree of gloss is formed, the image is formed by a first number of ejection and curing operations, and when an image having a second degree of gloss lower than the first degree of gloss is formed, the image is formed by a second number of ejection and curing operations greater than the first number.
摘要:
A heat pump type hot-water supply device including a hot water storage tank and a hot water circulation circuit is provided with a bactericidal component generator, such as a discharge device for generating a streamer discharge, in order to prevent development of bacteria, such as Legionella, at low cost. The bactericidal component generator generates, at a temperature lower than or equal to that of hot water in a hot water circulation circuit, a bactericidal component so as to bring about an effect on the hot water.
摘要:
Disclosed is a dust collector (30) that is disposed in an air passageway (15) to which water droplets (21a) are supplied, and that includes a dust collecting electrode portion (31b) which electrically attracts dust charged in the air. The dust collecting electrode portion (31b) is made of a plate-like member having a mesh-like structure with a plurality of pores, thereby reducing an interfacial tension between the water droplets (21a) adhering on the surface of the dust collecting electrode portion (31b) and the dust collecting electrode portion (31b). Thus, water droplets are prevented from increasing in size on the surface of a dust collecting electrode, and a decrease in the dust collection capability due to adhesion of dust or the like is reduced.
摘要:
A semiconductor laser device includes: an electrically insulating film on the top face of a laser chip; and a metal film, on the electrically insulating film. The electrically insulating film and/or the metal film has, in plan, a polygonal shape with five or more apexes, each of the apexes having an interior angle less than 180 degrees. Stress due to a change of temperature during operation is reduced, resulting in a semiconductor laser device having a longer life and higher reliability.
摘要:
[Problem] To provide an articulated vehicle which permits steering control not only suited for traveling on general roadways but also suited for work at construction sites.[Solution] An articulated construction vehicle is provided with an articulated, self-propelled body 1, body-articulating hydraulic cylinders 2 for articulating the self-propelled body, a pilot-operated directional control valve 5 for controlling a flow of pressure oil to the body-articulating hydraulic cylinders 2, and a steering-wheel-operated control device 6 for outputting a pilot signal to corresponding one of signal-receiving ports of a directional control valve 7 by rotational operation of a steering wheel 7A. The articulated construction vehicle is also provided with a lever-operated, electrical control device 10 for outputting an electrical signal by tilt operation of a lever 11A, a controller 11 for being inputted with the electrical signal from the control device 10 to output an electrical signal concerning the operation of the lever 11A, a signal conversion means for converting the electrical signal into a pilot signal and outputting the pilot signal to corresponding one of the signal-receiving ports of the directional control valve 5 to switch the control valve 5, and a selection means of an operation system that operation of the directional control valve 5 by the rotational operation of the steering wheel 7A and operation of the directional control valve 5 by the tilt-operation of the lever 11A can be selectively performed.
摘要:
A system is provided that sets reference points or lines in a layout region and arranges a layout element in the layout region using the positions of the reference points or lines as reference positions. The system includes: a unit storing reference position information defining positions of the reference points or lines and attribute information defining an attribute of the layout element such that the reference position information and the layout element attribute information are associated; a unit acquiring the layout element; a unit acquiring the layout element attribute information; a unit searching the reference position information corresponding to the acquired layout element attribute information; and a unit arranging the acquired layout element by using the positions of the reference points or lines as the reference positions, based on the searched reference position information.