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    Intelligent decision-making method and system for maintaining urban underground sewer network
    12.
    发明公开
    Intelligent decision-making method and system for maintaining urban underground sewer network 审中-公开

    公开(公告)号：US20230195979A1

    公开(公告)日：2023-06-22

    申请号：US18110370

    申请日：2023-02-16

    Applicant: Zhengzhou University

    Inventor： Hongyuan Fang ,  Danyang Di ,  Bin Sun ,  Jinping Zhang ,  Bin Li ,  Haobang Hu ,  Cheng Li ,  Chaoyang Zhang

    IPC: G06F30/28

    CPC classification number: G06F30/28

    Abstract: An intelligent decision-making method for maintaining urban underground sewer network includes steps of: analyzing with a sewer network functional defect three-dimensional instantaneous hydraulic model; calibrating parameters by finite element fitting analysis and full-scale test, and verifying accuracy of the sewer network functional defect three-dimensional instantaneous hydraulic model; combining node water level iteration method, Preissmann slit method, Godunov finite volume method and unstructured grid to rebuild a surface-subsurface one-two-dimensional coupled connection model; using R language, dynamic library linking technology, and long-short-term memory neural network method of multi-source data samples for engineering secondary development of the surface-subsurface one-two-dimensional coupled connection model, and obtaining urban sewer network functional defect conditions with waterlogging result labels; and establishing a multi-objective planning intelligent decision-making model for sewer network maintenance and a solving method thereof. The present invention provides intelligent, accurate and scientific management for urban sewer network.

    High-throughout continuous casting and rolling Al—Mg—Mn alloy plate for ships and the preparation process thereof
    13.
    发明授权
    High-throughout continuous casting and rolling Al—Mg—Mn alloy plate for ships and the preparation process thereof 有权

    公开(公告)号：US11674202B2

    公开(公告)日：2023-06-13

    申请号：US17873596

    申请日：2022-07-26

    Applicant: ZHENGZHOU UNIVERSITY

    Inventor： Shaokang Guan ,  Guangxi Lu ,  Cong Xu

    IPC: C22C21/06

    CPC classification number: C22C21/06

    Abstract: The invention discloses a high-throughout continuous casting and rolling Al—Mg—Mn alloy plate for ships and the preparation process thereof. The chemical components of the Al—Mg—Mn alloy in percentage by mass percentage are: Mg: 0.80-2.80%, Mn: 0.00-1.40%, Zr: 0.10-0.50%, Cr: 0.15-0.35%, Sr: 0.00-0.10%, Er: 0.00-0.60%, Si: 0.10-0.40%, Cu: 0.01-0.10%, Ti: 0.01-0.05%, Fe: 0.00-0.40% and the rest is Al. The preparation processes mainly include smelting and melt treatment, continuous casting, continuous rolling and cold rolling. The invention solves the problems of easy segregation, low strength and toughness and poor formability in the preparation of high-throughout continuous casting and rolling Al—Mg—Mn plates for ships.

    Method Of Carbothermic Process Of Magnesium Production And Co-Production Of Calcium Carbide
    14.
    发明申请
    Method Of Carbothermic Process Of Magnesium Production And Co-Production Of Calcium Carbide 有权

    公开(公告)号：US20230049604A1

    公开(公告)日：2023-02-16

    申请号：US17786462

    申请日：2020-12-17

    Applicant: Zhengzhou University

    Inventor： Shaojun Zhang

    IPC: C22B26/22

    Abstract: This invention relates to a method of carbothermic process of magnesium production and co-production of calcium carbide, which is particularly suitable for carbothermic process of magnesium production with a mixture of magnesium oxide and calcium oxide as a raw material and carbon as a reducing agent. A mixed powder containing magnesium oxide, calcium oxide and a carbon reducing agent is prepared. The mixed powder is processed into a pelletized furnace feed material, which is placed into a reactor equipped with a heat source. With an absolute pressure P in the reactor being set within the range of 1000 Pa≤P≤atmospheric pressure or to a slightly positive pressure and a reaction temperature T within the range of 11 lg2P+71 lgP+1210° C.

    Method for preparing large size Beta-type Ammonium tetramolybdate monocrystal particle
    15.
    发明申请
    Method for preparing large size Beta-type Ammonium tetramolybdate monocrystal particle 有权

    公开(公告)号：US20220403545A1

    公开(公告)日：2022-12-22

    申请号：US17834238

    申请日：2022-06-07

    Applicant: ZHENGZHOU UNIVERSITY

    Inventor： Xiaochao WU ,  Qingkui LI ,  Jing ZHANG ,  Kaijun YANG ,  Chengduo WANG ,  Jilin HE

    IPC: C30B7/08 ,  C30B33/02

    Abstract: A method for preparing large size beta-type ammonium tetramolybdate monocrystal particle includes industrial ammonium molybdate, ammonia, de-ionized water are used to prepare ammonium molybdate solution with concentration of 0.2˜0.6 g/ml; pH is adjusted to 5˜7, temperature is adjusted to the first temperature of 70˜90° C. to obtain the first ammonium molybdate solution; beta-type ammonium tetramolybdate crystal seed is put into crystallization container, and the first ammonium molybdate solution is poured in the crystallization container, to form crystallization system; the crystallization system stands still at room temperature, naturally cooling, the beta-type ammonium tetramolybdate crystal seed grows into large size beta-type ammonium tetramolybdate monocrystal particle. A beta-type ammonium tetramolybdate crystal seed is obtained by constant-temperature crystallization at 70˜90° C. The obtained beta-type ammonium tetramolybdate crystal seed is put stewing in the first ammonium molybdate solution and is naturally cooling to produce large size beta-type ammonium tetramolybdate monocrystal particle forms.

    Method of preparing ITO ceramic target with controllable grain size
    16.
    发明授权
    Method of preparing ITO ceramic target with controllable grain size 有权

    公开(公告)号：US11486034B2

    公开(公告)日：2022-11-01

    申请号：US15930912

    申请日：2020-05-13

    Applicant: Zhengzhou University

    Inventor： Jilin He ,  Benshuang Sun ,  Yongchun Shu ,  Yang Liu ,  Jie Chen ,  Xueyun Zeng

    IPC: C23C14/34 ,  C04B35/457 ,  C04B35/626 ,  C04B35/638 ,  C04B35/634 ,  C04B35/636 ,  C04B35/64 ,  C04B111/00

    Abstract: A method of preparing an ITO ceramic target includes that: In2O3 powder with mass fraction of 90˜97 and SnO2 powder with mass fraction of 10˜3 are ball-milled and mixed with deionized water, diluent, binder and polymer material by a sand mill to obtain an ITO ceramic slurry with a solid content between 70˜80% and a viscosity between 120˜300 mpa·s, with an average particle size D50 of the mixed powder controlled at 100˜300 nm; the ITO ceramic slurry is shaped by a pressure grouting to obtain an ITO ceramic green body with a relative density of 58˜62%; the ITO ceramic green body is put into a degreasing and sintering integrated furnace, and under a degreasing temperature of 700˜800° C., the ITO ceramic target is degreased in an atmospheric oxygen atmosphere for the time set to 12˜36 hours; the temperature increases from the degreasing temperature to the first sintering temperature of 1,600˜1,650° C.

    Method, Equipment and Readable Medium for Evaluating Structural Strength of Fiber and Nanosized Materials Reinforced Concrete
    17.
    发明申请
    Method, Equipment and Readable Medium for Evaluating Structural Strength of Fiber and Nanosized Materials Reinforced Concrete 有权

    公开(公告)号：US20220268737A1

    公开(公告)日：2022-08-25

    申请号：US17564808

    申请日：2021-12-29

    Applicant: Zhengzhou University of Aeronautics Ltd.

    Inventor： Han Li ,  Ke Shi ,  Qiaoyan Guan ,  Qian Zhu ,  Xiaopeng Xie

    IPC: G01N29/06 ,  G10K11/24 ,  G01N29/07 ,  G01N33/38

    Abstract: A method, an equipment, and a computer readable medium for evaluating structural strength of fiber and nanosized materials reinforced concrete are provided. The method includes: obtaining a sound velocity of a fiber and nanosized materials reinforced concrete test block; deriving a structural compressive strength of the fiber and nanosized materials reinforced concrete test block according to the sound velocity and a relation between fiber and nanosized materials reinforced concrete structural compressive strength and fiber and nanosized materials reinforced concrete sound velocity; determining strengths of various parts of the fiber and nanosized materials reinforced concrete test block based on measured parameters and recorded design parameters of the test fiber and nanosized materials reinforced concrete, and evaluating deviations of the strengths of the respective parts from the structural compressive strength. The partial design strengths and the deviations from the structural compressive strength may be evaluated and corrective measures may be given.

    TEST DEVICE OF UNIVERSAL NAIL/SCREW HOLDING POWER
    20.
    发明申请
    TEST DEVICE OF UNIVERSAL NAIL/SCREW HOLDING POWER 审中-公开

    公开(公告)号：US20190003926A1

    公开(公告)日：2019-01-03

    申请号：US15807452

    申请日：2017-11-08

    Applicant: NANJING FORESTRY UNIVERSITY ,  ZHENGZHOU UNIVERSITY

    Inventor： ZELI QUE ,  XIAOLIN YANG ,  QICHENG TENG ,  HONGYI LU ,  FEIBIN WANG ,  ZHERUI LI ,  WEIZHEN CAI

    IPC: G01M99/00 ,  G01N3/08

    Abstract: A test device of universal nail/screw holding power is provided. The device is capable of penetrating a nail/screw into a test piece at any angle and positioning the test piece on which a nail/screw is penetrated at any angle to test the nail/screw holding power. The device includes a base, two opposite supporting plates, two coaxial disks, an upper bearing plate, a lower bearing plate, a side bearing plate, a through groove, a trapezoid slot, and a plurality of trapezoid bolts on the same circumference. When the disk is turned, at least one trapezoid bolt is stretch into the trapezoid slot; when the at least one trapezoid bolt engages with the trapezoid slot and then is tightened up, the at least one trapezoid bolt and the trapezoid slot cooperatively limit the turn of the disk.

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