摘要:
The problem to be solved by the present invention is to provide a method for treating a polypeptide including a cysteine residue for enhancing the sensitivity of detection thereof in mass spectrometry using charged particles. A mass spectrometry method for a polypeptide including a cysteine residue is provided which includes treating the polypeptide including a cysteine residue with a cyanation agent, treating the cyanated polypeptide with a base, and then desorption ionizing the base-treated polypeptides using charged particles for mass spectrometry.
摘要:
A more effective noise reduction method is provided. In the method, when mass spectrum information having a spatial distribution is processed, the whole data is taken as three-dimensional data (positional information is stored in an xy plane, and spectral information is stored along a z-axis direction), and three-dimensional wavelet noise reduction is performed by applying preferable basis functions to a spectral direction and a peak distribution direction (in-plane direction).
摘要:
Target molecules in a sample can be detected at an improved sensitivity by means of a mass spectrometer. A sample with or without a matrix is placed on a substrate and irradiated with a converged and pulsed primary beam selected from an ion beam, a neutral particle beam or a laser beam. Secondary ions and neutral molecules are emitted along with protons from the irradiated point of the sample as an electric field is applied between the substrate and an extraction electrode disposed above the substrate. A proton-control electrode is arranged in axial symmetry with the trajectory of the primary beam. A voltage is applied thereto so that the generated electric field decelerates the flying protons to raise their adhering efficiency to the flying neutral molecules.
摘要:
The invention also provides for an apparatus for feeding molten resin, wherein the apparatus includes holding units each having a respective holding portion that is opened and closed to hold a molten resin that is discharged from an extrusion port of a die head of an extruder and is cut by a cutter while moving on a track, in which, after the respective holding portion transfers the molten resin from the extrusion port to a female mold, a side of the respective holding portion is opened and the molten resin is fed down to the female mold in a compression-molding machine, wherein a plurality of longitudinal grooves extending up and down are formed in an inner circumferential surface of the respective holding portion that holds the molten resin.
摘要:
Provided is a method that achieves both of soft ionization and high ionization efficiency of a substance to be analyzed at each measurement site without impairing a two-dimensional distribution state of the substance to be analyzed in desorption ionization mass spectrometry of a substance to be measured. By applying, to a substance to be analyzed, an ionization assisting reagent including an organic acid including a functional group represented by —(CF2)COOH and having a boiling point of 150° C. or more, and a polyhydric alcohol having a melting point of 20° C. or less and a boiling point of 150° C. or more at normal pressure, the organic acid, which is a component of the ionization assisting reagent, effectively donates a proton to the substance to be analyzed, thereby improving ionization efficiency, and the polyhydric alcohol, which is a component of the ionization assisting reagent, inhibits fragmentation.
摘要:
[Problem] To realize a predetermined “aseptic level of the containers” without introducing a container sterilizing machine and to reduce the burden for adjusting the temperature of the preform.[Means for Solution] A metal mold for molding, wherein a space width (t2) of at least the body portion in the space width for forming a thickness of from the body portion to the bottom portion of the preform is set to lie in a range of 1.18 to 2.11 times as great as a space width (t1) for forming a thickness of an upper end portion of the mouth portion of the preform. At the time of the compression molding, the preform is taken out in the state of a high temperature from a compression-molding machine 31 and is fed to a bottle-producing unit C while maintaining the state of a high temperature. Further, the inner surfaces of a clean box I in which the units are placed and the outer surfaces of the units are sterilized, and the interior of the clean box I maintains a positive-pressure state with the filtered clean air. The bottle-producing unit C and a filling/sealing unit D are neighboring and directly coupled to each other in the same clean box, and are partitioned by a WBZ 54.
摘要:
A method for obtaining information on a mass of an object by time-of-flight mass spectrometry. This method includes placing colloidal metal particles for promoting ionization of the object inside the object at a depth ranging from 0.1 nm to 100 nm in opposition to a primary beam for the ionization; irradiating the object with the primary beam selected from the group of ions, neutral particles, and electrons, which can be focused, pulsed, and are capable of scanning, and laser beams, which can be focused, pulsed, and are capable of scanning to ionize a constituent of the object and to allow the ionized constituent to fly out of the object; and obtaining information on the mass of the flying constituent of the object by time-of-flight mass spectrometry.
摘要:
An information obtaining method for obtaining information about a mass of a component of an analyte using a time of flight mass spectrometer and obtaining information about a distribution state of the component based on the obtained information about the mass includes the step of: (1) adding a self-reactive substance to the analyte on a base to facilitate ionization of the component; (2) irradiating the analyte with a primary beam in the presence of the self-reactive substance, thereby ionizing the components and allowing resulting ions to fly; (3) obtaining information about mass of the flying ions using the time of flight mass spectrometer; and (4) obtaining information about the distribution state of the component on the base based on the information about the mass.
摘要:
Provided is an organic electroluminescence element which is driven with a reduced drive voltage without deteriorating emission luminance and has a high power efficiency. The organic electroluminescence element having at least one light emitting layer is characterized in that two or more types of light emitting dopants having different emission colors are included in at least one light emitting layer, the concentration of all the light emitting dopants included in the light emitting layer is 5 Vol % or more, and the concentration of the light emitting dopant giving a main emission color among the light emitting dopants in the light emitting layer is 2 Vol % or less.
摘要:
[Problems] To provide an apparatus for feeding resin capable of extinguishing angular traces formed at both end portions of the cutter mark or of preventing the angular traces from extending up to the side wall of the body portion of the preform at the time of forming a preform.[Means for Solution] An apparatus for feeding molten resin to a compression-molding machine, including a holding unit 17 that rotates on a track, the holding unit 17 having a pair of holders 22 and 23 capable of holding and releasing the molten resin. When the molten resin is cut by a cutter, a linear cutter mark 29 is formed on the cut surface of the resin in a direction at right angles with the direction in which the molten resin is cut. Protruded portions 32 and 33 are formed on the inner circumferential surfaces of the holders 22 and 23 to deform the end portions of the cutter mark 29 toward the inside of the cutter mark when the molten resin is held by the pair of holders 22 and 23.