摘要:
A polyoxyalkylene monoalkyl ether which gives, in gel permeation chromatography, a chromatogram which satisfies a relation expressed by an equation: S1/S0≦0.15, wherein S1 represents the area under a portion of the chromatogram from the start of elution to the earliest elution time when the intensity of the refractive index has a value of L/3, L representing the shortest distance between the greatest maximum point of the intensity of the refractive index and the base line and S0 represents the area under a portion of the chromatogram from the start of elution to an elution time when the intensity of the refractive index has the greatest maximum value; a process for producing the above ether comprising adjusting the content of water in a reactor, which is used in addition polymerization of alkylene oxides with addition to a monohydric alcohol, so as to satisfy an equation: Wi×(Cf−Ci)/V≦10, wherein the content of water in the reactor is obtained by placing a solvent having a content of water Ci (ppm) in an amount Wi (g) in the reactor having an inner volume V (ml), stirring the solvent to clean the reactor, removing the solvent from the reactor and obtaining a content of water Cf (ppm) in the removed solvent; a polymerizable derivative of the above ether; a polymer of this derivative, and a dispersant comprising this polymer. A high purity polyoxyalkylene monoalkyl ether can be obtained and the dispersant comprising the polymer derived from this ether have an excellent dispersing property.
摘要:
An operational remote controller integrates a joystick for bending a bending portion of an inserted portion in an endoscope. A bending lever stands on the joystick. For every automatically returning of the bending lever to a neutral position, a CPU of the operational remote controller detects the neutral position and sets an insensitive band within a predetermined range of the neutral position. Thus, the insensitive band can be set within a relatively narrow range irrespective of variation of neutral positions. The CPU supplies positional information of the bending lever to a control circuit for controlling a motor drive circuit. The control circuit controls a motor drive circuit based on the supplied positional information, and the motor drive circuit drives a motor to bend the bending portion of the inserted portion.
摘要:
In a method for manufacturing a semiconductor device having a first insulation film, a second insulation film formed over the first insulation film, an inlayed interconnection layer formed in the second insulation film, and an organic film provided on the inlayed interconnection layer and the second insulation film, the organic film having a dielectric constant lower than the second insulation film, the organic film is grown inside a vacuum chamber.
摘要:
In a semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium; a semiconductor disk comprising a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be prolonged.
摘要:
A method for manufacturing a semiconductor device which ensures the reliability of the connection between a metal wiring of the device to a MOS transistor of the device and which enables the metal wiring to be connected to an electrode of a capacitor of the device without any deteriorating a metal oxide dielectric film of the capacitor is provided. In the method, a transistor having a source/drain region and a gate electrode is formed on a semiconductor substrate. Then, a capacitor is formed on the substrate and has an upper capacitor electrode, a lower capacitor electrode, and a metallic oxide dielectric film disposed between the upper capacitor electrode and the lower capacitor electrode. An insulating film is formed over the capacitor such that the insulating film covers the capacitor, and a transistor contact hole is formed through the insulating film for providing an electrical connection to the transistor while the capacitor is covered via the insulating film and not exposed to an atmosphere when the first contact hole is formed. Also, a capacitor contact hole is formed through the insulating film for providing an electrical connection to the capacitor after the transistor contact hole is formed. A device manufactured by the above method is also provided.
摘要:
In a method of manufacturing a semiconductor device, a CMOS section composed of an N-channel MOS transistor and a P-channel MOS transistor and a memory section composed of at least a transfer gate MOS transistor is formed on a substrate. A plurality of conductive plugs is formed to penetrate a laminate insulating film to the MOS transistors. The laminate insulating film is composed of a first insulating film and a second insulating film. A capacitor section is formed on the laminate insulating film and the capacitor section is composed of an upper electrode, a dielectric film and a lower electrode. A third insulating film is formed on the laminate insulating film and the capacitor section. A wiring pattern is formed on the third insulating film to partially penetrate the second insulating film connect to the plurality of conductive plugs. A wiring pattern may be disposed in the laminate insulating film to connect at least two of the plurality of conductive plugs.
摘要:
The present invention provides a production method and an apparatus for double curve formed products for producing double curve formed products easily at low cost, stabilizing an accuracy in configurational dimension of the double curve formed product and improving an accuracy in assembly thereof, the production apparatus being of a simple construction apparatus. Around an inner die in which an end portion of a treatment product is engaged, an outer die in which the other end portion of the treatment product is engaged is rotated relative to each other at predetermined angles. At this time, a side face of the treatment product is curved so that it is successively folded back. By a deformation reaction caused at this time, the side face of this curved portion is pressed against a processing curved surface of the inner die such that the side face is deformed along the processing curved surface. Another side face of the treatment product is pressed against a processing curved surface of the outer die such that it is deformed along the processing curved surface. As a result, in the treatment product, one curved surface is formed along the processing curved surface of the outer die and the other curved surface which is continuous from the one curved surface which is folded back is formed along the processing curved surface of the inner die.
摘要:
An emulsion ink for stencil printing is provided, which affords a printed image having a high density and a constant quality, without being influenced by kinds of printing paper used, and by the presence or absence of projections and depressions on the surface of printing paper used, has a superior drying property of ink and does not cause any exudation, seeping-through and offsetting, which emulsion ink for stencil printing comprises an oil phase and an aqueous phase to form a Water-in-oil(W/O) type emulsion ink, wherein a extender pigment is contained in the oil phase of the emulsion ink.
摘要:
An apparatus for surface treatment of polishing cloth includes a rotary cloth mounting section on which a polishing cloth is to be attached, and a rotary surface treatment tool made of an inorganic material other than metal and having at least a protrusion with an irregular surface portion on the surface thereof. The surface treatment tool and the cloth mounting section is rotated and a position of a rotation axis of a first rotating unit is different from that of a rotation axis of a second rotating unit. The rotating surface treatment tool is pressed against the cloth mounting section with a predetermined pressure while the surface treatment and cloth mounting sections are rotated.
摘要:
First and second substrates are provided with a projection of a high melting point conductive material and an aperture filled at the bottom plane with a low melting point conductive material, respectively. The projection of the first substrate is plunged into the low melting point conductive material which is molten in the aperture by heating, so that the projection and the low melting point conductive material are bonded mechanically and electrically by cooling.