Abstract:
An elastic boundary wave device includes a first medium with piezoelectricity, an electrode exciting an elastic wave and provided on the first medium, a second medium made of a different material from the first medium and provided on the first medium to cover the electrode, and a sound absorbing portion provided on the second medium.
Abstract:
A method of asbestos detoxification in which an asbestos-containing waste material in any form is made harmless while preventing asbestos particles or dust from flying or scattering. The asbestos content can be easily reduced in a short time to 0.1 wt. % or lower, which is prescribed by the Ministry of Health, Labor, and Welfare. The waste can be perfectly made harmless. Also provided is an aqueous solution for asbestos detoxification which is for use in the method. The method of asbestos detoxification comprises: bringing an asbestos-containing waste material into contact with an aqueous treating solution containing at least one fluoride ion source selected from the group consisting of the fluorides of alkali metals, alkaline earth metals, and ammonia and hydrofluoric acid and further containing at least one mineral acid selected from the group consisting of hydrochloric acid, sulfuric acid, and nitric acid so that the aqueous treating solution has a pH of 1 or lower; and allowing the resultant mixture to stand or stirring it while adding the mineral acid so as to keep the pH of the aqueous treating solution at 1 or lower. Thus, the asbestos in the asbestos-containing waste material is made harmless.
Abstract:
An image sensing device comprises a pixel array, a plurality of column amplification units each including a setting unit, and a plurality of reference signal supply units, wherein a first reference signal and a second reference signal are common to a plurality of columns in the pixel array, each of the plurality of column amplification units amplifies a difference between the first reference signal and the second reference signal to output the amplified difference, or amplifies each of the first reference signal and the second reference signal to output the amplified first reference signal and the amplified second reference signal, and the setting unit sets, in the column amplification unit, an amplification factor which is determined in accordance with a signal output from each of the plurality of column amplification units so as to reduce variations of the amplification factor between the plurality of column amplification units.
Abstract:
An elastic wave device including a piezoelectric substrate, comb-like electrodes formed on the piezoelectric substrate, and a dielectric layer formed on the piezoelectric substrate. The dielectric layer formed on the piezoelectric substrate covers the comb-like electrodes and the thickness of the dielectric layer formed on the piezoelectric substrate is larger than the sum of the thickness of the comb-like electrodes and the thickness of the dielectric layer formed on the comb-like electrodes.
Abstract:
An acoustic wave device includes an acoustic wave element provided on a substrate, a wiring that is provided on the substrate and is electrically connected to the acoustic wave element, a sealing portion that is provided on the substrate so as to cover the acoustic wave element and the wiring, and an insulating layer that is provided on a whole area between the substrate and the sealing portion and between the wiring and the sealing portion.
Abstract:
A filter includes a parallel resonator having first comb electrodes provided on a piezoelectric substrate and a first dielectric film that covers the first comb electrodes, and a series resonator having second comb electrodes provided on the piezoelectric substrate and a second dielectric film covers the second comb electrodes and is made of a material identical to that of the first dielectric film. The first dielectric film has a different thickness from that of the second dielectric film.
Abstract:
An image forming apparatus includes a processing unit which performs an image recording process for recording an image on a recording medium based on image data; a movement mechanism which moves the processing unit; a first control section which controls the image recording process performed by the processing unit; and a second control section which acquires a state of progress of the image recording process and controls the movement mechanism so as to move the processing unit to a position according to the progress state.
Abstract:
A write power determining method for an optical disk drive determines optimum write power information of an optical disk during the high-speed rotation of the disk. A push-pull signal amplitude is obtained at two positions in a radial direction of an optical disk before writing. A linearization value of optimum write power associated with radial positions over the whole writing area of the disk is determined on the basis of the obtained push-pull signal amplitude. The determined result is adopted as optimum write power information associated with the radial positions of the disk.
Abstract:
There is provided a resonant circuit includes a resonator, an inductor connected in parallel with the resonator, and a capacitor connected in parallel with the resonator. There are also provided a filter and an antenna duplexer having the above-described resonant circuit.