Sacrificial concrete for core catcher and preparation method thereof

    公开(公告)号:US11538596B1

    公开(公告)日:2022-12-27

    申请号:US17501313

    申请日:2021-10-14

    Abstract: A sacrificial concrete for a core catcher and a preparation method thereof are provided. The sacrificial concrete includes raw materials in parts by weight as follows: cement, 575˜625 parts; a quartz sand, 1200˜1300 parts; a hematite ore, 700˜800 parts; water, 200˜220 parts; a water reducing agent, 7˜10 parts; and strontium oxide, 0˜10 parts. The process of the preparation method is simple, and the sacrificial concrete with excellent performances of fluidity, strength and high-temperature resistance can be prepared by the known mixing technology. The sacrificial concrete can reduce releasing of radioactive substances 89Sr and 90Sr, so as to improve safety of nuclear power plants in case of a severe accident. Moreover, the sacrificial concrete can be used not only in a core catcher of current third generation nuclear power plant, but also in a core catcher of future fourth generation nuclear power plant, and has widespread engineering application value.

    Apparatus and method for generating electricity and producing carbon and heat via biomass fixed bed gasification

    公开(公告)号:US11485919B2

    公开(公告)日:2022-11-01

    申请号:US16484075

    申请日:2018-08-28

    Abstract: A method and apparatus for generating electricity and producing carbon and heat via biomass fixed bed gasification, said method and apparatus utilising medium calorific value combustible gas to satisfy high-temperature high-pressure boiler heat requirements, and increasing overall electricity generation efficiency. The method and apparatus have low nitrogen oxides amounts, satisfy environmental protection requirements, and do not require denitrification treatment. The method comprises the following steps: feeding a biomass raw material into a gasification apparatus to prepare a medium calorific value biomass combustible gas, and performing gasification on the biomass raw material at 700-850° C. under the effect of an air/water vapour pre-mixed gasification agent to produce a combustible gas, the calorific value of the combustible gas being 1600-1800 kcal, the temperature being 200-300° C.; directly feeding the combustible gas into an environmentally friendly combustion chamber for combustion, and then into a high-temperature high-pressure boiler, the gas combusting within the high-temperature high-pressure boiler to produce high-temperature high-pressure steam, which drives a steam turbine to generate electricity; utilising steam waste heat discharged by the steam turbine; using boiler tail gas to heat air by means of an air preheater, the hot air being respectively fed into the combustion chamber and the gasification apparatus by means of an air blower, and utilising the waste heat.

    URBAN TUNNEL VARIABLE LANE DIVIDING LINE CONTROL METHOD

    公开(公告)号:US20220292957A1

    公开(公告)日:2022-09-15

    申请号:US17296923

    申请日:2020-06-15

    Abstract: An urban tunnel variable lane dividing line control method, comprising: setting a distance between adjacent infrared detection apparatuses, and arranging a number n of infrared detection apparatuses side by side directly above the center of a lane of an urban tunnel; when a certain infrared detection apparatus in the urban tunnel detects a passing vehicle signal, extending the travelling direction, and if a number a of adjacent infrared detection apparatuses further along the travelling direction do not detect a passing vehicle signal within a time t, determining that the vehicle is a very slow vehicle, and changing a number m of LED indication lights which are fully illuminated to be illuminated at intervals. The urban tunnel variable lane dividing line control method can determine whether a very slow vehicle is present in a lane, and adjust a display state of a lane dividing line in an urban tunnel in real time, thereby increasing urban tunnel traffic efficiency, and preventing very slow vehicles from affecting urban tunnel traffic capacity.

    Bamboo strip shaping device and method

    公开(公告)号:US11318635B2

    公开(公告)日:2022-05-03

    申请号:US16833036

    申请日:2020-03-27

    Abstract: Disclosed is a bamboo strip shaping method, which includes the following steps: S01: cutting a bamboo tube, and removing inner joints, outer joints and bamboo outer skin; S02: trisecting or quartering the bamboo tube in a longitudinal direction to obtain curved bamboo strips; S03: placing the curved bamboo strips in a bamboo strip shaping device for processing; S04: subjecting the curved bamboo strips to steam treatment and heating softening treatment; S05: pressing and shaping the curved bamboo strips to obtain flattened bamboo strips, and drying for a first time under a maintained pressure; S06: wetting bamboo outer skin surfaces and bamboo inner skin surfaces of the flattened bamboo strips, and drying for a second time; and S07: wetting the bamboo outer skin surfaces and the bamboo inner skin surfaces of the flattened bamboo strips, and drying for a third time.

    Method for Identifying Genetic Relatedness of Liriodendron Hybrids

    公开(公告)号:US20210032708A1

    公开(公告)日:2021-02-04

    申请号:US17042937

    申请日:2018-10-31

    Abstract: A method for identifying the genetic relatedness of Liriodendron hybrids is provided, including: 1) extracting DNA of Liriodendron hybrid leaves; 2) performing PCR detection; and 3) identifying the genetic relatedness of Liriodendron spp. according to the size of PCR products amplified with different primers. A special kit for the method for identifying the genetic relatedness of Liriodendron hybrids is further provided, including a primer pair 18.2 and a primer pair 700. Moreover, an application of a special kit for identification of the genetic relatedness of Liriodendron hybrids is provided.

    Biflavone-zinc complex, preparation method and application thereof

    公开(公告)号:US10815254B2

    公开(公告)日:2020-10-27

    申请号:US16487842

    申请日:2018-02-13

    Abstract: The present invention discloses a biflavone-zinc complex, a preparation method and application thereof. In the present invention, using the amentoflavone as the ligand and the zinc ion as the central ion, the amentoflavone-zinc complex is obtained by reaction, and the structure of the complex is characterized by infrared spectroscopy, UV-vis absorption spectroscopy and high resolution mass spectrometry. Meanwhile, the antitumor and antioxidant activities of the amentoflavone-zinc complex are studied in the present invention. MTT method shows that the amentoflavone-zinc complex has better antitumor activity, and the antitumor activity thereof is stronger than that of the amentoflavone. Pyrogallol auto-oxidation method and ABTS method show that the antioxidative activity of the amentoflavone-zinc complex is stronger than that of the amentoflavone itself. The formation of the flavonoid-zinc complex enhances the antitumor and anti-oxidation activities of the amentoflavone, and is expected to be used in the development of drugs.

    Biflavone-copper complex, preparation method and application thereof

    公开(公告)号:US10815252B2

    公开(公告)日:2020-10-27

    申请号:US16487845

    申请日:2018-02-13

    Abstract: A biflavone-copper complex, a preparation method and application thereof are disclosed. The biflavone-copper complex has the following structural formula: wherein, X is NO3− or Cl−. A method of preparing the biflavone-copper complex includes the following steps: dissolving a copper salt in an alcohol and then adding into a biflavone alcoholic solution, controlling pH to 5-7; under heating and stirring, performing a reaction for 2-5 h to form a precipitate; filtering the precipitate, washing the precipitate with alcohol and water, recrystallizing the precipitate using dimethyl sulfoxide as a solvent, and drying the precipitate to obtain the biflavone-copper complex. The biflavone-copper complex is used for preparing an antitumor drug and/or an antioxidant drug.

    BIFLAVONE-ZINC COMPLEX, PREPARATION METHOD AND APPLICATION THEREOF

    公开(公告)号:US20200247825A1

    公开(公告)日:2020-08-06

    申请号:US16487842

    申请日:2018-02-13

    Abstract: The present invention discloses a biflavone-zinc complex, a preparation method and application thereof. In the present invention, using the amentoflavone as the ligand and the zinc ion as the central ion, the amentoflavone-zinc complex is obtained by reaction, and the structure of the complex is characterized by infrared spectroscopy, UV-vis absorption spectroscopy and high resolution mass spectrometry. Meanwhile, the antitumor and antioxidant activities of the amentoflavone-zinc complex are studied in the present invention. MTT method shows that the amentoflavone-zinc complex has better antitumor activity, and the antitumor activity thereof is stronger than that of the amentoflavone. Pyrogallol auto-oxidation method and ABTS method show that the antioxidative activity of the amentoflavone-zinc complex is stronger than that of the amentoflavone itself. The formation of the flavonoid-zinc complex enhances the antitumor and anti-oxidation activities of the amentoflavone, and is expected to be used in the development of drugs.

    BIFLAVONE-IRON COMPLEX, PREPARATION METHOD AND APPLICATION THEREOF

    公开(公告)号:US20200239506A1

    公开(公告)日:2020-07-30

    申请号:US16487848

    申请日:2018-02-13

    Abstract: A method for preparing a biflavone-iron complex, includes using the amentoflavone as the ligand and the ferric ion as the central ion, the amentoflavone-iron complex is obtained by reaction, and the structure of the complex is characterized by infrared spectroscopy, UV-vis absorption spectroscopy and high resolution mass spectrometry. Meanwhile, the antitumor and antioxidant activities of the amentoflavone-iron complex are studied in the present invention. MTT method shows that the amentoflavone-iron complex has a relatively good antitumor activity, and the antitumor activity thereof is stronger than that of the amentoflavone. Pyrogallol auto-oxidation method and ABTS method show that the antioxidative activity of the amentoflavone-iron complex is stronger than that of the amentoflavone itself.

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