12 results about "Radiation degradation" patented technology

To provide an antenna module capable of overcoming radiation space limitations and a wireless module including the same.SOLUTION: An antenna module 100 is composed of a first radiating portion 110, a second radiating portion 120, a first coupling radiating portion 130, and a second coupling radiating portion 140, and can direct the radiation direction of a signal to a space where radiation is possible using a coupling antenna. This makes it possible to overcome radiation degradation in a space where radiation space is limited.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of catalyst preparation and irradiation degradation, and particularly relates to a composite catalyst, a preparation method thereof and application of the composite catalyst in irradiation degradation of coal chemical sewage. Specifically, the compound composite catalyst containing the four metals of La, Co, Bi and Ti is successfully prepared, tests prove that the compound composite catalyst can be used as an electron beam irradiation catalyst to improve the degradation effect on high-concentration organic compounds, refractory and long-chain high-molecular organic matters and the like, and organic pollutants can be thoroughly degraded to reach the emission standard; the economic efficiency is good, and the risk of newly adding hazardous wastes and salinity is avoided, so that the method has good practical application value.

An optical system includes a bulk material including a fluorine (F)-containing optical material. The bulk material is exposed to an environment at a pressure ranging from atmospheric to vacuum when the bulk material is under extreme ultra-violet (EUV), vacuum ultra-violet (VUV), deep ultra-violet (DUV) and / or UV radiation. The environment includes at least one type of gas or vapor. The at least one type of gas or vapor includes polar molecules.

The optical system includes a bulk material, including an optical material containing fluorine (F). When the bulk material is exposed to extreme ultraviolet (EUV), vacuum ultraviolet (VUV), deep ultraviolet (DUV), and / or UV radiation, the bulk material is exposed to an environment at a pressure ranging from atmospheric pressure to a vacuum. The environment includes at least one type of gas or vapor. The at least one type of gas or vapor includes polar molecules.

The application discloses a first-level optical remote sensing image target detection simulation data set construction method and system, and the method comprises the following steps: S1, according to a preset application requirement, screening images and labels from an existing optical remote sensing target detection data set to construct a new optical remote sensing image target detection data set; S2, performing radiation degradation on the new optical remote sensing image target detection data set to obtain a radiation-degraded image data set; S3, performing geometric degradation on the radiation-degraded image data set to add geometric distortion of first-level remote sensing images to the data set to obtain a geometric-degraded image data set; S4, performing additive degradation on the geometric-degraded image data set to superimpose interference signals to obtain a degraded data set; and S5, re-labeling the degraded data set to obtain the first-level optical remote sensing image target detection simulation data set.

To provide an inorganic oxide flake excellent in radiation degradation resistance.SOLUTION: An inorganic oxide flake excellent in radiation degradation resistance includes SiO2, Al2O3, CaO, and Fe2O3 as principal constituents, where i) a total of SiO2 and Al2O3 is 40 mass% or more and 70 mass% or less, ii) Al2O3 / (SiO2+Al2O3) (a mass ratio) is in a range of 0.15 to 0.40, iii) Fe2O3 is 16 mass% or more and 25 mass% or less, and iv) CaO is 5 mass% or more and 30 mass% or less, in the inorganic oxide flake by oxide conversion.SELECTED DRAWING: None

The performance of F-containing optical materials can degrade rapidly in the extreme ultraviolet (EUV), VUV, deep ultraviolet (DUV) and / or UV spectral ranges as a result of radiation degradation, leading to reduced optical performance and lifetime of optical applications and / or systems.SOLUTION: The optical system comprises a bulk material comprising an optical material comprising fluorine (F). When a bulk material is under extreme ultraviolet (EUV), vacuum ultraviolet (VUV), deep ultraviolet (DUV) and / or UV radiation, the bulk material is exposed to an environment with a pressure ranging from atmospheric pressure to vacuum. The environment includes at least one type of gas or vapor. At least one type of gas or vapor comprises polar molecules.SELECTED DRAWING: Figure 1

The invention provides an ionizing radiation degradation preparation method of high-biological-activity polygonatum sibiricum oligosaccharide, and belongs to the field of preparation of main functional components of traditional Chinese medicinal materials. The preparation method comprises the following steps: weighing a proper amount of rhizoma polygonati, cleaning, slicing, freeze-drying, crushing, sieving, filling in a PE (Poly Ethylene) bag, carrying out electron beam radiation extraction, and selecting a dose rate of 20kGy / pass and a radiation absorbed dose of 0-320kGy. The method comprises the following steps: irradiating polygonatum sibiricum, adding water with a solid-to-liquid ratio of 1: 10-1: 30 into irradiated polygonatum sibiricum powder, carrying out reflux extraction for 1-5 times at 70-110 DEG C for 1-3 hours each time, carrying out separation and purification on extracted polygonatum sibiricum crude polysaccharide by using a DEAE-52 chromatographic column, and carrying out concentration, alcohol precipitation, centrifugation, freeze drying and drying to obtain the polygonatum sibiricum refined polysaccharide. And then taking a proper amount of polygonatum sibiricum polysaccharide, bagging, performing plastic packaging, and performing radiation degradation on the polygonatum sibiricum polysaccharide by using an electron accelerator. And after radiation, passing through an ultrafiltration system, and carrying out rotary evaporation, alcohol precipitation, centrifugation and freeze drying to obtain the polygonatum sibiricum oligosaccharide. By means of the process, the polygonatum sibiricum oligosaccharide with high biological activity can be prepared in an environment-friendly and efficient mode.

The radiation degradation-resistant phenylsilicone rubber composite provided by the present invention is composed of the following components by weight: 100 parts phenylsilicone rubber premix, 1-3 parts processing aid, 20-30 parts radiation-resistant additive, and 0.5-2 parts peroxide crosslinker. The manufacturing method specifically follows the following steps: First, the following components are weighed out by weight: 100 parts phenylsilicone rubber premix, 1-3 parts processing aid, 20-30 parts radiation-resistant additive, and 0.5-2 parts peroxide crosslinker. Next, the phenylsilicone rubber premix, processing aid, and radiation-resistant additive are first mixed in an open roll mill and then passed through a first thin pass to obtain a masterbatch rubber. The masterbatch rubber and peroxide crosslinker are then second mixed in an open roll mill and then passed through a second thin pass to obtain a final mixed rubber. Finally, the final mixed rubber is vulcanized to obtain a radiation degradation-resistant phenylsilicone rubber composite. The present invention solves the problem of the deterioration of mechanical properties of rubber after radiation exposure, which is a problem encountered in the prior art.

The present invention relates to chitosan, and specifically relates to a chitosan solution resistant to radiation degradation and its radiation sterilization method, belonging to the technical field of biomaterial processing. The present invention discloses a chitosan solution resistant to radiation degradation, which is characterized in that, by mass percentage, the chitosan solution contains the following components: chitosan 0.5% - 2%; glacial acetic acid 0.25% - 1%; glycerol 4% - 6%; n-butanol 3% - 4%; propylene glycol 0.6% - 1%; the balance is water; by adding glycerol, n-butanol and propylene glycol to the chitosan solution, the present invention can reduce the degradation of chitosan during the irradiation of the chitosan solution, improve the stability of the chitosan solution, and at the same time improve the antibacterial effect of the chitosan solution film-forming.

The invention provides a method for preparing polygonatum polysaccharide gel tea through ionizing radiation, and belongs to the technical field of health-care food and functional beverages. After rhizoma polygonati is crushed and sieved, ionizing radiation extraction is performed to obtain rhizoma polygonati crude polysaccharide. Separating and purifying to obtain polygonatum sibiricum polysaccharide, and carrying out radiation degradation by selecting a dosage rate of 20 kGy / pass and a total radiation absorption dosage of 80-320 kGy to obtain polygonatum sibiricum oligosaccharide for later use. Crushing green tea, sieving, adding water, refluxing and collecting filtrate; clarifying the green tea filtrate by using a ceramic membrane, concentrating and drying to obtain green tea powder for later use; the preparation method comprises the following steps: respectively adding water into polyvinyl alcohol (PVA) and sodium carboxymethyl starch (CMS) and stirring; after the polyvinyl alcohol is completely dissolved, adding the completely dissolved sodium carboxymethyl starch solution into the polyvinyl alcohol, and uniformly stirring; and pouring the uniformly stirred hydrogel into a mold, adding the dried green tea and the dried polygonatum kingianum oligosaccharide, carrying out rapid circulation freeze-drying shaping, and packaging to obtain a finished product. Through the process, the sustainable slow-release polygonatum sibiricum polysaccharide gel tea can be obtained.

This invention discloses a method for constructing and modeling degradation of multi-source data for cross-medium imaging under complex sea conditions, belonging to the field of underwater optical imaging. Addressing the difficulty of existing technologies in uniformly describing geometric distortion caused by sea surface fluctuations and radiation degradation resulting from water absorption and scattering, this invention integrates multi-source data from real-sea observations, controlled laboratory tests, and auxiliary references. It constructs a wave interface function and establishes a refractive distortion displacement field based on Snell's law, while simultaneously building a water radiation degradation model to form a unified degradation expression. Furthermore, it expands the sample space through physically guided data enhancement, generating a dataset with multi-dimensional degradation labels. This invention achieves joint modeling of geometric and radiation degradation in cross-medium imaging, providing a high-fidelity, high-generalization data foundation for image restoration model training.