摘要:
An AC-DC converter which allows an input current of an input AC power source to have harmonic currents of reduced levels and which supplies a stabilized output DC voltage to a load is realized by a simple circuit configuration. The converter has: a converter circuit consisting of a choke coil which receives a rectified voltage from a rectifying circuit, a switch element, and a diode; a smoothing capacitor which smooths the output voltage of the converter circuit and supplies the smoothed voltage to a load; and a control circuit consisting of a current detection circuit, a voltage detection circuit, and a pulse-width control circuit. In order to stabilize the output voltage, the switch element is turned on and off so that the peak value of the input current of the converter circuit is limited in a DC-like manner, thereby allowing the input current to have a trapezoidal waveform.
摘要:
A surface treatment chemical for aluminum or its alloy consisting essentially of 10-1000 parts by weight of one or more ions of metals selected from the group consisting of scandium, yttrium, lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium, 10-500 parts by weight of zirconium ion, 10-500 parts by weight of phosphate ion and 1-50 parts by weight of effective fluorine ion. A surface treatment bath for aluminum or its alloy consisting essentially of 10-1000 ppm of one or more ions of metals selected from the group consisting of scandium, yttrium, lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, yttterbium and lutetium, 10-500 ppm of zirconium ion, 10-500 ppm of phosphate ion and 1-50 ppm of effective fluorine ion, and having a pH of 1.8-4.0.
摘要:
Chromium free cleaning compositions for cleaning aluminum and aluminum alloy surfaces comprisingA. from 0.2-4 g/l ferric ion andB. sufficient sulfuric and/or nitric acid to produce a pH of 2 or less.The invention also relates to compositions containing from 0.001-0.5 g/l of fluoride ions.
摘要:
In chromium-free aqueous acidic washing solutions for cleaning the surfaces of aluminum and aluminum-alloy particles, so as to remove therefrom smut and lubricating oil left on the surfaces thereof after metal forming operations, which solutions contain from 0.2 to 4 g/l ferric ion and sufficient sulfuric and/or nitric acid to impart a pH of 2 or less to the solutionh (and which optionally may also contain fluoride ions up to a concentration of 0.5 g/l) there is provided a method of controlling the effectiveness of the washing solution in which the ferric ion concentration therein is monitored, conveniently by the oxidation-reduction potential of the washing solution, as shown in FIG. 3, and is controlled within the desired limits by adding when appropriate suitable amounts of oxidant capable of oxidizing ferrous ions to ferric ions and, separately or in conjunction therewith, a replenisher containing a source of iron ions.
摘要:
There is provided an information processing apparatus for calculating an evaluation value representing quality of a moving image. A second acquisition unit is configured to acquire position information representing a position of a chart image in each frame image of the input moving image. A cutout unit is configured to cut out, from each frame image of the input moving image, a partial image including the chart image based on the position information and generate a converted moving image having the cutout partial image as a frame image. A conversion unit is configured to frequency-convert the converted moving image at least in a temporal direction. A calculation unit is configured to calculate the evaluation value based on a frequency component value obtained by the conversion unit.
摘要:
A medical equipment management apparatus for managing a medical equipment provided in a medical facility connected to the apparatus through a network. The apparatus comprises a reception unit, a storage unit, a prediction unit, a determination unit, and an informing unit. The reception unit is configured to receive a parameter data regarding the medical equipment more than once. The storage unit is configured to store the parameter data, and the prediction unit is configured to calculate an expectancy of the parameter data to be received in the future based on the stored parameter data. Further, the determination unit is configured to determine a level of the expectancy, and the informing unit is configured to give a notice to the medical facility through the network according to the determined level.
摘要:
A reading apparatus and method for reading data from a digital versatile disc includes a specification section configured to specify a predetermined position of content. A controller generates information indicating a predetermined portion from a position specified by the specification section. A storage section reads the predetermined portion from the digital versatile disc on the basis of the information generated by the generation section and stores the predetermined portion on a storage medium. A reading controller controls reading of data from the storage medium and the digital versatile disc.
摘要:
A lubricating oil composition for a power transmission system, which is excellent in both of low-temperature viscosity property and shear stability, is provided. The viscosity modifier of a lubricating oil for a power transmission system according to the present invention comprises an ethylene/α-olefin copolymer (B) having the properties: (B1) an ethylene content in the range of 70 to 85% by mol, (B2) an intrinsic viscosity [η] in the range of 0.2 to 1.0 dl/g, (B3) Mw/Mn not more than 2.4, and (B4) a melting point, as measured by DSC, not higher than 60° C., or no melting point observed.
摘要:
An illuminator emits light obliquely to an end of an adhesive film. A CCD camera is provided in a direction perpendicular to the adhesive film to capture an image of the light reflected irregularly from the end of the adhesive film. A black plate is provided on a back side of the adhesive film. In the image obtained by the CCD camera, therefore, only the end of the adhesive film is displayed whitely in a line shape. A position of the adhesive film is determined based on a line corresponding to the end of the adhesive film. Since the light reflected from the end of the adhesive film is utilized, the position of the adhesive film can be determined accurately irrespective of a color of the adhesive film, a color of a base film to which the adhesive film is joined, and a depth of each color.
摘要:
A test fluid measurement device includes an output acquisition unit for acquiring an output value from a urinary sugar sensor, when a reference fluid, set to a specified density, is applied to the urinary sugar sensor. By using this output value to set a reference value, a reference value setting unit calibrates the sensitivity of the urinary sugar sensor. During sensitivity calibration, an output value judgment unit determines according to an output value that is already acquired by the output acquisition unit whether or not the output value that is newly acquired by the output acquisition unit is suitable to be set as the reference value. After an output value is determined not to be suitable as the reference value setting, a reference fluid detection unit detects when more reference fluid from which another output value is to be acquired by the output acquisition unit has been additionally applied.