Abstract: A master unit includes a synchronization signal source that generates a synchronization signal and a synchronization signal distribution adjustment circuit that adjusts a distribution timing of the synchronization signal to each of slave units. The synchronization signal distribution adjustment circuit includes a period measurement circuit that measures a period of the synchronization signal output from the synchronization signal source, a time difference measurement circuit that measures a time difference between a time point of the synchronization signal issued from the master unit to the slave units and a time point of the synchronization signal returned from the slave units to the master unit, and a delay circuit that delays the issuing time point of the synchronization signal to be transmitted from the master unit to the slave units based on the period of the synchronization signal and the time difference.
Abstract: An X-ray imaging apparatus includes a moving unit for changing an irradiation position which is a position of a subject to be irradiated with X-rays by moving at least one of an imaging unit for emitting X-rays to a subject and a top board, and a control unit for performing control for displaying on a first display unit a two-dimensional virtual plane image which is a two-dimensional image in which an image indicating the skin dose for each of a plurality of irradiation positions and a scale image indicating at least one of the distance and the angle with respect to a reference position are superimposed on a virtual plane.
Abstract: For an automatic adjustment of a detector voltage, a measurement of a standard sample is performed, in which a reflection voltage generator under the control of an autotuning controller applies, to a reflector, voltages which are different from those applied in a normal measurement and do not cause temporal conversion of ions. Ions having the same m/z simultaneously ejected from an ejector are dispersed in the temporal direction and reach a detector. Therefore, a plurality of low peaks corresponding to individual ions are observed on a profile spectrum. A peak-value data acquirer determines a wave-height value of each peak. A wave-height-value list creator creates a list of wave-height values. A detector voltage determiner searches for a detector voltage at which the median of the wave-height values in the wave-height-value list falls within a reference range.
April 26, 2018
Date of Patent:
October 19, 2021
Tomoyuki Oshiro, Daisuke Okumura, Yuta Miyazaki, Hiroaki Kozawa
Abstract: A transfer electrode unit (240) is configured by coaxially arranging a plurality of loop electrodes (241A, 241B, 241C), and guides ions to an orthogonal acceleration region (242C) by allowing the ions to pass through an inner side of the plurality of electrodes (241A, 241B, 241C) each of which is applied with a voltage. A voltage having a higher absolute value than the voltage applied to the plurality of electrodes (241A, 241B, 241C) is applied to a flight tube (246), and the ions accelerated in the orthogonal acceleration region (242C) are introduced to a flight space formed in the flight tube (246). A shield portion (241F) is provided between the transfer electrode unit (240) and the flight tube (246), and suppresses that an electric field derived from the voltage applied to the flight tube (246) enters the transfer electrode unit (240).
Abstract: The image reconstruction processing method estimates, in a substance information estimation process, substance information from a reconstructed image for every image update in an image update process, and uses the estimated substance information to update images based on succeeding calculations by successive approximation formulae of a successive approximation method. Since the substance information is estimated, the present methodology can be applied regardless of whether the constituent substance of an imaging sample is known. Further, because the substance information is estimated (updated) from the reconstructed image for every image update in the image update process, reliable substance information can be estimated by avoiding the problem of continuously using the substance information estimated at a point of time where a repeat count (iteration count) by successive approximation formulae is low and at a point of time where the repeat count is high.
Abstract: A microorganism identification method utilizing mass spectrometry is provided. More specifically, a method for identifying a phylotype of Cutibacterium acnes utilizing mass spectrometry is provided. The method includes a) a step for reading out a m/z value of a peak derived from a marker protein on a mass spectrum which is obtained by mass spectrometry of a sample containing microorganisms; and b) a step for judging whether the sample contains Cutibacterium acnes (C. acnes) based on the m/z value.
Abstract: A gas chromatograph includes a display unit, indicators, and a display control unit. The gas chromatograph is provided with a plurality of units having the same function, and the indicators are each associated with any of the plurality of units. When the error has occurred in any of the plurality of units in the gas chromatograph, processing of the display control unit displays an error notification screen on a display screen of a display unit, and in addition, operates an indicator associated with the unit in which the error has occurred. Therefore, a user can recognize in which of the plurality of units the error has occurred.
Abstract: A composition formula of each precursor ion located on a measured mass spectrum is estimated from the m/z value of the precursor ion (S11). A composition formula of each product ion located on a measured MS/MS spectrum is estimated from the m/z value of the product ion (S11). For each product-ion peak, the assignment of the peak is determined by verifying consistency between the composition formula of the product ion and the composition formula of each of the precursor ions (S13-S14). Based on the assignment result, the MS/MS spectrum data are separated and an MS/MS spectrum for each precursor ion is created (S15-S16). In this manner, MS/MS spectra which respectively correspond to a plurality of compounds can be created from an MS/MS spectrum in which the product ions originating from those compounds are mixed, and those compounds can be identified.
Abstract: To provide a cell treatment container, including: a first member having a flow path in which a cell suspension including a liquid and cells dispersed in the liquid flows through, the flow path formed on a surface of the first member; a second member arranged to face the surface of the first member; and a damming formed in one or both of the first member and the second member, in which the damming is provided with a protrusion part protruding from the first member into the flow path to form a gap for allowing the liquid in the cell suspension to pass through the gap and for damming up the cells in the cell suspension, and a pillar extending from the protrusion part at a first end and being joined to the second member at a second end.
Abstract: A liquid delivery device includes a liquid delivery pump that sucks a mobile phase, which is liquid, from a mobile phase container containing the mobile phase through a suction pipe whose end is immersed in the mobile phase in the mobile phase container, and feeds the mobile phase, and at least one dissolved substance removal filter that is provided at a position upstream of the liquid delivery pump on a path through which the mobile phase flows and is filled with a filler having the property of adsorbing a dissolved substance in the mobile phase.
Abstract: Provided is a material testing machine capable of giving an appropriate testing force to a testing piece. The material testing machine performs a three-point bending test on a testing piece and includes a support mechanism that supports the testing piece, an indenter that is connected to an ultrasonic oscillator and gives ultrasonic vibration to the testing piece by abutting against the testing piece, and a load mechanism that presses the indenter to the testing piece supported by the support mechanism. The support mechanism includes: a spherical seat that has a lower member equipped with a spherical-surface-shaped concave portion or convex portion, and an upper member equipped with a spherical-surface-shaped concave portion or convex portion having a shape corresponding to the concave portion or convex portion in the lower member; a holding portion; and a first movable member.
Abstract: A rotary anode driving device includes a DC power supply, an inverter circuit which is connected to the DC power supply and includes a plurality of switching elements and, the inverter circuit generates an AC voltage from a DC voltage of the DC power supply, and outputs the AC voltage to a stator coil which generates a rotating magnetic field of an X-ray tube; a pulse width modulation (PWM) waveform generator configured to generate an AC voltage of two phases or three phases as the AC voltage from the DC voltage by performing PWM control of the switching elements of the inverter circuit; and a capacitor connected in series to an input side of a stator coil of at least one phase of the stator coil, the capacitor having an electrostatic capacitance constituting a series resonant circuit with the stator coil to which the capacitor is connected.
Abstract: An X-ray imaging apparatus capable of covering outer peripheral portions of a fixed and moving supporting columns by a cover even when an SID is set to be large in a configuration in which an imaging system is rotated about an axis extending in a horizontal direction. The supporting column mechanism is provided with a fixed supporting column and a moving supporting column. A fixed cover is arranged at the outer peripheral portion of the fixed supporting column. A moving cover which moves together with the moving supporting column is arranged. An intermediate cover movable in the same direction as the moving cover is arranged between the fixed cover and the moving cover. Between the fixed supporting column and the moving cover, a constant force spring as an energizing member for energizing the intermediate cover to the side of the fixed cover is arranged.
August 6, 2019
Date of Patent:
October 12, 2021
Tomomi Watari, Koji Yoshida, Yoshihiro Atsumi
Abstract: A gas chromatograph device (100) includes a calculator (2) configured to acquire information on conduits (36) between a branch unit (33) and detectors (34) and information that identifies types of the detectors connected to the conduits, the calculator being configured to calculate at least one of gas flow rates in the conduits, gas linear velocities in the conduits, or a pressure in the branch unit based on the acquired information.
Abstract: The other end of an individual sample supply channel one end of which is connected to a gas buffer container the inside of which is empty is connected to one sub-port of a valve that selects one of standard samples to be supplied to an ESI probe. During analysis, the standard sample stored in one of liquid sample containers is selected by switching a connection state of the valve. The standard sample supplied by being pushed by a gas sent to the liquid sample containers through liquid supply gas branch channels is sent to the ESI probe through a sample supply main channel. At the time of finishing analysis, when the valve is switched such that the sub-port and a main port are communicatively connected, a nitrogen gas is sent to the sample supply main channel, and the remaining liquid is discharged.
Abstract: An image processor (13) of an X-ray imaging apparatus (100) is configured to be switchable to a full period image composition mode in which a composite image (M) is generated by superimposing images in an entirety of an image generation period and a partial period image composition mode in which the composite image is generated by superimposing the images in a part of the image generation period.
April 9, 2018
Date of Patent:
October 5, 2021
Michel Dargis, Takanori Yoshida, Keiichi Tanno
Abstract: An accessory for an infrared spectrophotometer is provided in which both an infrared spectrum and a Raman spectrum at the same measurement position of a sample can be easily acquired. By incorporating an infrared optical system and an excitation light source into the accessory for an infrared spectrophotometer, infrared light from an infrared light source of the infrared spectrophotometer and excitation light from the excitation light source provided for the accessory are guided to the same measurement position P in the sample S. A total reflection spectrum is acquired by detecting the totally reflected light from the sample S irradiated with the infrared light by an infrared detector of the infrared spectrophotometer. Raman scattered light from the sample S irradiated with the excitation light is detected by a Raman detector provided in the accessory.
Abstract: An X-ray spectrometer includes: an excitation source that irradiates a predetermined irradiation region on a surface of a sample with an excitation ray generating a characteristic X-ray; a flat plate analyzing crystal facing the irradiation region; a slit provided between the irradiation region and the analyzing crystal, the slit being parallel to a predetermined crystal plane of the analyzing crystal; a linear sensor including linear detection elements having a length in a direction parallel to the slit are arranged in a direction perpendicular to the slit; and an energy calibration unit that measures two characteristic X-rays in which energy is known by irradiating a surface of a standard sample generating the two characteristic X-rays with the excitation ray from the excitation source, and calibrates the energy of the characteristic X-ray detected by each detection element of the X-ray linear sensor based on the measured energies of the two characteristic X-rays.
Abstract: In a method for analyzing a microorganism using a matrix assisted laser desorption/ionization mass spectrometer, a matrix-and-additive mixture solution prepared by mixing one or both of an alkylphosphonic acid and a surfactant with a matrix substance is used for matrix assisted laser desorption/ionization. Either an alkylphosphonic acid or a surfactant, or both of them are used as matrix additives and are mixed with the matrix substance beforehand to prepare a matrix-and-additive mixture solution. After a solution which contains a microorganism to be analyzed has been dropped onto a sample plate, the matrix-and-additive mixture solution is dropped onto that solution and dried to form a mixed crystal which contains both the constituents of the microorganism and the matrix substance. This crystal is used as a sample for MALDI-MS analysis. The sensitivity of analysis is thereby improved, without increasing the amount of time and labor required for sample preparation.