9 results about "Radiolysis" patented technology

To provide a radionuclide complex solution of high concentration and high chemical stability which can be used as a medicine for diagnosis and / or treatment.SOLUTION: Provided is a pharmaceutical composition comprising: (a) a complex formed by: (ai) a radionuclide; and (aii) a gastrin releasing peptide receptor peptide antagonist binding moiety linked to a chelating agent; (b) at least two stabilizers against radiolysis; and (c) optionally a surfactant.SELECTED DRAWING: None

The application discloses a heavy atom enhanced calix cyanine dye radioactivity detection colorimetric sensor, the dye is prepared by introducing heavy atoms in the calix cyanine dye skeleton, and the radiation sensitivity is significantly improved; the dye reacts with hydroxyl radicals generated by water radiolysis under the action of radiation, conjugate structure is destroyed, and color change from green to yellow is generated; the application comprises a colorimetric test strip prepared from the dye, and a detection system integrated with a smartphone image recognition function, the test strip comprises a base material and an additive; the additive comprises a copolymer, and preparation reaction monomers of the copolymer comprise N,N-diethylaminoethyl acrylate and 3-methylpent-2-ene dimethyl acid; the application has the advantages of high sensitivity, low cost, simple operation, portability and the like, can be used for rapid, visual and quantitative detection of radionuclides in water solution, urine and the like samples, and has important application value in the field of nuclear medicine radiation safety monitoring.

The invention provides an experimental device for measuring radiolysis gas yield and recording radiolysis bubble behaviors and an experimental method thereof, and belongs to the technical field of flow measurement. The problem that in the prior art, radiolysis gas yield cannot be measured while radiolysis bubble behaviors cannot be recorded is solved. The device comprises an electron accelerator, a quartz glass container, a gas chromatograph, a helium purging device, a high-speed camera, a light supplementing lamp, a reflecting mirror and a data acquisition system, the electron accelerator and the quartz glass container are connected with the data acquisition system, and the two ends of the quartz glass container are connected with the gas chromatograph and the helium purging device respectively. Reflecting mirrors are arranged on the two sides of the quartz glass container, a light supplementing lamp is arranged below the reflecting mirror close to the helium purging device, a high-speed camera is arranged below the other reflecting mirror, and the high-speed camera is connected with a data acquisition system. The device is mainly used for measuring the yield of radiolysis gas and the behavior of radiolysis bubbles.

To provide an organic compound decomposition device that can efficiently decompose organic compounds while reducing the cost, energy consumption, and CO2 emissions associated with the decomposition process. [Solution] The organic compound decomposition apparatus S according to the present invention is characterized by comprising: a radiation source 1 that generates radiation; a radiolysis vessel 2 that uses radiation from the radiation source 1 to decompose an organic compound to be processed and obtain decomposition products with reduced molecular weight; a heat recovery unit 41 that recovers the heat generated from the radiation source 1; and a heat supply unit 42 that supplies the recovered generated heat to the radiolysis vessel 2 or a processing vessel 31 that heats and processes one or more of the organic compound and the decomposition products.

The invention discloses a high polymer material radiolysis micromolecule product detection method which comprises the following steps: S1, filling a high polymer material into a solid phase microextraction device to form a negative pressure state; s2, performing gamma ray irradiation on the solid-phase microextraction device; s3, solid-phase microextraction fibers in the solid-phase microextraction device are taken out, and radiolysis micromolecule products adsorbed on the solid-phase microextraction fibers are analyzed through a gas chromatography-mass spectrometer; and S4, analyzing and determining the chemical structure of the radiolysis small molecule product, establishing a quantitative working curve between the peak area and the concentration of the standard product by combining the standard product, and calculating to obtain the content of the radiolysis small molecule product of the high polymer material under the radiation dose. According to the invention, solid-phase microextraction is combined with gas chromatography-mass spectrometry to analyze small molecular substances after high polymer materials such as rubber, resin and the like are irradiated, so that the ray irradiation resistance of the high polymer materials is evaluated; by combining qualitative and quantitative analysis methods, the content of micromolecular products of the high polymer material under different radiation doses can be obtained.

This invention provides a simulation method for the generation of organic iodine based on the Kolbe electrolysis reaction, belonging to the field of spent fuel reprocessing technology. This method introduces iodine into the Kolbe electrolysis reaction and compares the intrinsic ability of different forms of iodine to react with alkyl radicals to generate organic iodine. Compared with traditional simulation experiments under irradiation conditions, the method of this invention can conveniently obtain alkyl radicals through electrochemical reactions, eliminates the interference of water radiolysis products in the irradiation environment, and provides a clear understanding of the organic iodine conversion capabilities of different forms of iodine; moreover, it does not require specific irradiation equipment and shielding measures, facilitating real-time control and sampling analysis of the reaction, and has better simplicity and operability.

The invention discloses a medicine molecule modified by thioimine and application of the medicine molecule. The pharmaceutical molecule has a structure as shown in formula (I) or a pharmaceutically acceptable salt thereof: A-B (I); wherein the structure of the group A is shown in the specification; the group B is an anti-cancer drug group, and S in the group A is connected with amino in the group B through a sulfur imine bond. According to the compound, the cytotoxicity of the anti-cancer drug is shielded through the A group, the cytotoxicity of the anti-cancer drug can be reduced, when the compound enters a tumor tissue, a sulfur imine bond is induced to break, activate and release the anti-cancer drug through radiation, the anti-tumor activity of the original anti-cancer drug is recovered, and particularly, the high radiolysis yield of 240 nM / Gy or above can be achieved. Therefore, the compound can be used as a radiotherapy response drug for treating cancers, can enhance the treatment effects of chemotherapy and radiotherapy, and has the advantages of improving the biological safety and the like.

The invention relates to the technical field of ionizing radiation and metal extraction, in particular to a method for leaching and recycling ternary lithium battery waste through ionizing radiation. The method comprises the following steps: immersing a ternary lithium battery material to be extracted into a dilute sulfuric acid solution, carrying out radiolysis reaction through irradiation by utilizing strong penetrating power of high-energy rays, and reducing high-valence metal by utilizing hydration electrons generated by water decomposition through irradiation, so as to realize extraction of the ternary lithium battery material in a non-oxidizing dilute acid solution. And lithium, cobalt, nickel and manganese in the ternary lithium battery waste are efficiently leached out. The method disclosed by the invention has the advantages of mildness, energy conservation, greenness, high efficiency, environmental protection and low cost, does not depend on oxygen, does not need heating, does not need other additional catalysts and reducing agents, and can efficiently react at room temperature.

The invention discloses a cyanine dye radioactivity detection colorimetric sensor based on heavy atom enhancement, the cyanine dye is prepared by introducing heavy atoms into a cyanine dye skeleton, and the radiation sensitivity of the cyanine dye is obviously improved; the dye reacts with hydroxyl radicals generated by water radiolysis under the radiation effect, a conjugated structure is damaged, and the color change from green to yellow is generated; the dye comprises a colorimetric test strip prepared from the dye and a detection system integrated with an intelligent mobile phone image recognition function, and the test strip comprises a base material and an additive; the additive comprises a copolymer, and preparation reaction monomers of the copolymer comprise acrylic acid N, N-diethylaminoethyl ester and 3-methylpentyl-2-enedioic acid dimethyl ester; the method has the advantages of being high in sensitivity, low in cost, easy and convenient to operate, convenient to carry and the like, can be used for rapidly, visually and quantitatively detecting radionuclides in samples such as water solutions and urine, and has important application value in the field of nuclear medicine radiation safety monitoring.