摘要:
A process for producing a polyether polyol which can form low viscosity rigid foamed synthetic resins excellent in strength, dimensional stability and flame retardancy, can give a low viscosity polyol system solution containing water instead of HFCs as a blowing agent with good miscibility with isocyanate compounds and can form good rigid foamed synthetic resins by spraying, which polyether polyol is produced by reacting a phenol component (molar ratio 1) selected from phenol and phenol derivatives having a hydrogen atom at one or more ortho-positions to the phenolic hydroxyl group, an aldehyde component (molar ratio 0.3 to 0.9) selected from formaldehyde and acetoaldehyde and an alkanolamine component (molar ratio 1.5 to 3.5) selected from monoethanolamine, diethanolamine and 1-amino-2-propanol and then adding an alkylene oxide to the resulting reaction product.
摘要:
An input apparatus includes: a touch sensor 11; a piezoelectric element 13; a piezoelectric element drive unit 15; a control unit 17 configured to detect a pressure load on the touch sensor 11 based on an output signal of the piezoelectric element 13 and, when the pressure load satisfies a standard to provide a tactile sensation, to control the piezoelectric element drive unit 15 to drive the piezoelectric element 13 such that the tactile sensation is provided to a pressing object; a connection switchover unit 14 configured to selectively connect the piezoelectric element 13 to the control unit 17 or the piezoelectric element drive unit 15; and a discharge circuit 16 configured to discharge electric charge in the piezoelectric element 13. When the pressure load satisfies the standard, the control unit 17 controls the connection switchover unit 14 to connect the piezoelectric element 13 to the piezoelectric element drive unit 15 such that the piezoelectric element 13 is driven, and then controls the discharge circuit 16 to discharge the electric charge in the piezoelectric element 13.
摘要:
To provide a method for producing a rigid polyurethane foam, whereby it is possible to reduce the density without causing deterioration in dimensional stability, and a rigid polyurethane foam.A method for producing a rigid polyurethane foam, which comprises a step of reacting a polyol having a hydroxyl value of from 200 to 800 mgKOH/g with a polyisocyanate compound in the presence of an amino-modified silicone, a catalyst, a blowing agent and a surfactant.
摘要:
A first energy transfer circuit transfers the energy that stores in the transformer while the first switching element is ON, to the output side through an output winding of the transformer during the subsequent OFF period. A second switching element and the output winding of the second energy transfer circuit are connected in a circuit loop that runs through an input terminal, an output terminal, the load, the other output terminal and the other input terminal and transfers energy from the input side to the output side via the output winding when the second switching element is ON. The control circuit controls the ON period and the ON timing of the first switching element and the second switching element. A stable output voltage relative to a wide range of input voltages is obtained and, at the same time, a power factor correction is achieved.
摘要:
A sinusitis treatment device includes: a flexible first elongated body to be guided into an accessory; an imaging unit which is provided on the first elongated long body, for obtaining an image on the front side of a distal end of the first elongated body; a flexible second elongated body having a lumen in which the first elongated body is inserted; an expansive body which is provided on the second elongated body and which has an effective expansive section capable of radial expansive deformation within a natural ostium located between a nasal cavity and an accessory nasal cavity to push open a stenosed part of the natural ostium; and a positioning unit which is provided on the second elongated body, for positioning the effective expansive section of the second elongated long body moved along the first elongated body relative to the first elongated body.
摘要:
To provide a process capable of producing a light-weight rigid open-cell foam by a spraying method using mainly or solely water as a blowing agent, wherein a polyol system liquid is excellent in storage stability even when the blowing agent is used in a large amount, and the foam is excellent in dimensional stability without sagging and capable of forming a uniform thermal insulation layer having an excellent appearance for the purpose of constructing a whole constructions.
摘要:
To provide a method for producing a rigid polyurethane foam, whereby it is possible to reduce the density without causing deterioration in dimensional stability, and a rigid polyurethane foam.A method for producing a rigid polyurethane foam, which comprises a step of reacting a polyol having a hydroxyl value of from 200 to 800 mgKOH/g with a polyisocyanate compound in the presence of an amino-modified silicone, a catalyst, a blowing agent and a surfactant.
摘要:
A communication terminal and a communication system able to adaptively update sizes and positions of screens in accordance with the situation without operation by a user, and a display method of the communication terminal, which perform processing of individual packets in a linked manner under the control of a display image control portion 306 based on an address of a transmitting side. Based on a sound pressure (volume) of audio information (VoIP) from the same transmitting side address, the terminal etc. calculate the screen sizes for mapping of packets of the video information from the same transmitting side address and corrects the top/bottom of the same screen or displays an instructed animated character based on top/bottom information, instruction information, etc. described in the packets of the control information from the same transmitting side address.
摘要:
A switching power supply unit of the present invention a timing generating circuit (121) which receives a first control signal formed by a rectifier-transistor driving circuit (104), forms a second control signal based on the first control signal, and supplies the second control signal to a control electrode of the rectifier transistor (113).The first control signal is synchronized with the switching operation of a half-bridge circuit (102), and the second control signal exceeds a threshold voltage of a rectifier transistor (113) at a timing substantially equal to the timing that one edge of the first control signal is generated and falls below the threshold voltage of the rectifier transistor (113) at a timing earlier by predetermined time than the timing that the other edge of the first control signal is generated.
摘要:
A rectifying circuit having a pair of input terminals at which voltage having an AC waveform appears, a plurality of first rectifying elements 41, a plurality of second rectifying elements 42, a first wiring pattern 71 for connecting one of the paired input terminals to the plurality of first rectifying elements 41, and a second wiring pattern 72 for connecting the other of the paired input terminals to the plurality of second rectifying elements 42. In the rectifying circuit, the plurality of first rectifying elements 41 and the plurality of second rectifying elements 42 are laid out so that at least two boundaries between the first and second rectifying elements adjacent to each other are present. With such a layout of the rectifying elements, current flow paths between one of the input terminals and the plurality of first rectifying elements 41 and current flow paths between the other of the input terminals and the plurality of second rectifying elements 42, are closely disposed. Therefore, AC resistance Rac in the first wiring pattern 71 and the second wiring pattern 72 is effectively reduced.