Abstract: A small bowel endoscopic system of an ileus tube type using a monolithic composite optical fiber that can be applied with an ileus tube employed to administer a contrast agent or the like to a patient suffering from ileus and which is an integral assembly of a large-diameter optical fiber with a core/cladding structure intended for laser light transmission and a multi-core image fiber section surrounding that optical fiber to enable image transmission.

Abstract: A particle radiation monitoring apparatus according to one aspect of the present invention includes a detecting unit to detect radioactive ray information of braking radiation from electrons undergoing action of particle beams incident on an irradiation body in accordance with a positional relation with the irradiation body and a calculating unit to calculate information on behaviors of the particle beams in the irradiation body from the radioactive ray information of the braking radiation corresponding to the positional relation that is detected by the detecting unit.

Abstract: The present invention relates to a metal collecting material formed of an organic polymer fiber base material into which a functional group having a metal adsorbing function is introduced, in which the metal collecting material has a nonwoven fabric form, an opening diameter of 10 to 300 ?m, an aperture ratio of 10 to 50%, a thickness of 10 to 500 ?m, and a weight per area of 5 to 25 g/m2, and a fiber diameter of the organic polymer fiber is 5 to 50 ?m.

Abstract: A rare earth metal extractant containing, as the extractant component, dialkyldiglycol amide acid which is excellent in breaking down light rare earth elements is reacted in diglycolic acid (X mol) and an esterification agent (Y mol) at a reaction temperature of 70° C. or more and for a reaction time of one hour or more such that the mol ratio of Y/X is 2.5 or more, and is subjected to vacuum concentration. Subsequently, a reaction intermediate product is obtained by removing unreacted products and reaction residue, and an aprotic polar solvent is added as the reaction solvent. Then, the reaction intermediate product is reacted with dialkyl amine (Z mol) such that the mol ratio of Z/X is 0.9 or more and the aprotic polar solvent is removed. As a consequence, a rare earth metal extractant is efficiently synthesized at a low cost and at a high yield without having to use expensive diglycolic acid anhydride and harmful dichloromethane.

Abstract: A neutron detector without 3He gas, provided with a translucent type plate neutron scintillator having the structure capable to emit fluorescence from double-sides; the neutron scintillator is composed of ZnS fluorescent substance and a neutron converter which contains 6Li or 10B, and arranged at an angle of 45 degrees from the neutrons which are incident in parallel all together, inside of a cylindrical detector housing with the circular or square section where the specular reflector with the reflectance of 90% or more is arranged internally, and the fluorescence emitted when the neutron enters the scintillator is detected by two photo multipliers arranged on both sides, and signals output from these two photo multipliers are processed to be taken out as a neutron signal.

Abstract: Isotope identification imaging of nuclear fuel material or explosives concealed in a drum or container in which nuclear reactor fuel or radioactive waste are sealed is realized while ensuring high precision, high reliability, and safety. A sample 31 is irradiated with laser Compton photon beams 21 and 22 generated by a collision between an electron beam 12 and polarized laser light 16 and 20. An isotope in the sample is identified using nuclear resonance fluorescence, and the spatial distribution thereof is imaged. In so doing, a nuclear level of an isotope whose emission direction of nuclear resonance fluorescence is dependent on the planes of polarization of the incident LCS photon beams is used.

Abstract: An image capturing apparatus for capturing the image of the physical object and displaying the captured image is provided for combining and displaying in real time the shape-distorted graded scale with the captured image, the apparatus comprising a graded scale generating part for generating the graded scale to be used for indicating the dimension of the physical object in the captured image; a data storing part for storing the data for correction to be used in order to correct the graded scale shape by adding the distortion to the generated graded scale in the similar degree to the distortion caused by the distortion aberration; a graded scale shape correcting part for generating the shape-distorted graded scale by correcting the graded scale shape according to the data for correction; and an image combining part for combining the generated shape-distorted graded scale with the captured image, and displays the captured image combined with the shape-distorted graded scale.

Abstract: A detection apparatus for fine particles in a fluid includes: a flow cell which passes the fluid therein; an X-ray source which irradiates a side face of the flow cell with X-rays; an X-ray detector that detects the intensity of transmission X-rays that the X-rays which have been emitted from the X-ray source have been attenuated by due to the fine particles in the fluid; a fluorescent X-ray detector which detects fluorescent X-rays that are emitted by the fine particles in the fluid due to the X-rays which have been emitted from the X-ray source; and a data processing device which discriminates between fine particles and air bubbles in the fluid based on the fluctuation amount from each reference variable of the intensity of the transmission X-rays and the intensity of the fluorescent X-rays, and calculates the number and the particle diameter of the fine particles.

Abstract: A self-powered gamma detector which can hold the influence of neutron rays to the minimum, and can measure the dose of gamma rays accurately under a high neutron environment in the reactor is disclosed. The self-powered gamma detector has a columnar emitter member; a collector member arranged in surroundings of the emitter member through an insulating member, and the strength of gamma rays is measured by detecting the value of a current which flows between the emitter member and an MI cable connected with the emitter member, and the collector member. Especially, the emitter member consists of pure tungsten (W), whose inevitable impurities is in 0.03 percent by weight or less.

Abstract: A graft chain containing an N-vinylimidazole derivative is introduced into a polymer substrate by radiation graft polymerization to obtain an alkyl substituted imidazolium salt by a reaction with an alkyl halide, so that an anion exchange membrane with high alkaline durability, in which a nucleophilic substitution reaction and an elimination reaction are inhibited, is obtained.

Abstract: Disclosed is a method for rapidly separating radioactive copper from nickel that contains radioactive copper and radioactive cobalt, which comprises dissolving nickel that contains radioactive copper and radioactive cobalt in an acid solution and leading it to pass through a chelating-ion exchange resin-filled column to thereby make nickel, radioactive copper and radioactive cobalt held by the chelating-ion exchange resin, and then leading an acid solution to pass through the chelating-ion exchange resin-filled column to elute nickel and radioactive cobalt, and thereafter leading an acid solution having a higher concentration than that of the previous acid solution to pass through the chelating-ion exchange resin-filled column after nickel and radioactive elution therefrom to thereby elute radioactive copper.

Abstract: A method of preparing a gel from carboxymethyl cellulose alkali metal salt, which is an anionic cellulose derivative, by using acid or acid solution. To increase the strength and the elasticity of a gel, a water-insoluble metal compound or organic reinforcement is added when mixing. The obtained gel is one of environmentally friendly type gels because the raw material is derived from plant.

Abstract: [Problem] To provide a scintillator plate capable of improving the accuracy of radiation detection, and expanding the surface area for practical use while suppressing manufacturing costs, and also provide a radiation measuring apparatus, a radiation imaging apparatus, and a scintillator plate manufacturing method. [Solution] A scintillator plate (1) includes a scintillator (2) that generates scintillation light when excited by incident radiation. The scintillator plate (1) includes a scintillator layer (22) covered with scintillator powder (21) having an average particle diameter equal to or greater than the range of the radiation within the scintillator (2) when the radiation to be measured is either alpha rays, electron beams, or ion beams.

Abstract: An optical hydrogen gas detecting membrane is prepared by sequentially depositing a platinum oxide layer and a catalytic metal layer on a transparent substrate, such as quartz glass, by vapor deposition such as the sputtering method. Palladium or platinum is used as the catalytic metal layer.

Abstract: Gel for radiation dosimeter including a gel part (A) and a gel part (B) that become cloudy when exposed to a fixed dose or more, wherein said gel part (A) exposed to more than a specified dose above the fixed dose maintains a cloudy state regardless of the decrease in external temperature; and said gel part (B) exposed to less than the specified dose above the fixed dose changes gradually from a cloudy state into a transparent state according to the decrease in external temperature.

Abstract: Provided are a polymer electrolyte membrane exhibiting a relatively high ion conductivity, and a method for producing the polymer electrolyte membrane. The polymer electrolyte membrane of the present invention is an ion-conducting polymer electrolyte membrane including a polymer. The polymer includes a hydrophobic main chain and side chains bonded to the main chain. Each of the side chains includes a hydrophobic main chain portion and a plurality of side chain portions bonded to the main chain portion. Each of the side chain portions includes a hydrophobic first portion bonded to the main chain portion, and a second portion bonded to the first portion. The second portion includes an ion-conducting group.

Abstract: An image sensor and an image sensing method can obtain image signals with a high S/N ratio in a high-speed image pickup operation. Signal charges are input to input transfer stage 31 of CCD memory 30. Final transfer stage 32 is formed so as to be connected to the input transfer stage 31 and able to transfer signal charges to the input transfer stage 31. In an accumulation mode, read gate 42 and drain gate 40 are not turned on and the next transfer operation of the CCD memory 30 is conducted. The accumulated signal charges are transferred on a stage by stage basis and the signal charges obtained at the first image pickup timing are transferred again straightly to the input transfer stage 31. In this state, the signal charges obtained newly at photoelectric conversion section 20 at the next image pickup timing are injected into the input transfer stage 31 by way of input gate 21.

Abstract: To cover a wide wavelength bandwidth, a spectroscopic apparatus uses three varied line spacing concave diffraction gratings G1 to G3, the corresponding energy ranges for G1, G2, and G3 being 50 to 200, 155 to 350, and 300 to 2200 eV, respectively. In the respective wavelength ranges, the diffraction conditions are satisfied. To provide a high throughput and a high resolution in the respective wavelength regions, the incident angles ?1 to ?3 for G1 to G3 measured from the normal line of the diffraction grating are specified to be ?1<?2<?3. Presupposing the normal lines of all diffraction gratings are superposed upon a common normal line, in order to meet ?1<?2<?3, the center positions ?1 to ?3 for G1 to G3 are set on the normal line (as ?1<?2<?3). From G1 to G3, one diffraction grating can be selected.

Abstract: With respect to the anionic polymer ion-exchange material used in an alkaline fuel cell, an electrodialysis apparatus, water treatment industry, catalyst industry, and the like, there are provided an anionic polymer ion-exchange material having both excellent ionic conductivity and excellent mechanical strength, as compared to the materials conventionally used, and a method for producing the same. An anionic polymer ion-exchange material having a polymer base material mainly made of an amide resin having both an aromatic structure and an aliphatic chain in the principal chain thereof, wherein the polymer base material has an anionic monomer graft-polymerized on the aliphatic chain in the principal chain of the amide resin, wherein the anionic monomer has an aromatic structure and a quaternary ammonium structure.

Abstract: An apparatus with which areas near surfaces in a water environment that are contaminated by radioisotopes are decontaminated by non-thermal laser peeling without suffering re-melting, re-diffusing and re-contaminating. The apparatus includes a piping structure with which a substance to be irradiated that has been deposited on outer and inner surfaces of a nuclear reactor pressure vessel, and a nuclear reactor container tank, and the internal nuclear reactor structures all having been contaminated with radioisotopes, can be removed in the water environment. The piping structure, to secure a region in a water environment that is gas pressurized to discharge the water and filled with the gas to not interfere with laser irradiation, has a semi-hermetically closed, incomplete water seal that is half-open with a siphon provided downward, a mechanical structure that withstands water pressure in a radial direction, and an extendable bellows-like tube to enable the piping structure to tilt.