公开(公告)号：US20170268127A1

公开(公告)日：2017-09-21

申请号：US15517165

申请日：2015-10-09

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guang Chen ,  YINGBO PENG ,  GONG ZHENG ,  ZHIXIANG QI ,  MINZHI WANG ,  PEI LI

IPC: C30B29/52 ,  C22C14/00 ,  C30B33/02 ,  C30B35/00 ,  C30B13/00 ,  C30B11/00

Abstract: A TiAl intermetallic compound single crystal material and a preparation method therefor are disclosed. The alloy composition of the material comprises TiaAlbNbc(C, Si)d, wherein 43≦b≦49, 2≦c≦10, a+b+c=100, and 0≦d≦1 (at. %).

公开(公告)号：US20250155600A1

公开(公告)日：2025-05-15

申请号：US19007493

申请日：2025-01-01

Applicant: Nanjing University of Science and Technology

Inventor： Leixiang BIAN ,  Yuntao ZHANG ,  Yong HE ,  Zhan XU ,  Jie HU ,  Zijun HUANG

IPC: G01V3/10

Abstract: The embodiments of the present application provide a target detection device and method, the target detection device comprises: a signal source, a signal transmission module, a signal output module, a bearing portion and a processing module, the signal transmission module is supplied with a step excitation waveform current, the signal transmission module is induced and generates a first magnetic field, a target to be detected is induced and generates a second magnetic field in the first magnetic field, when the signal source is turned off, the signal output module outputs a voltage signal comprising an oscillating voltage signal for detection in a geomagnetic anomaly detection mode and an attenuated voltage signal for detection in an electromagnetic induction time domain detection mode; the processing module is connected to the signal output module, and is used to process the voltage signal and detect the target based on the first signal feature.

公开(公告)号：US12281405B2

公开(公告)日：2025-04-22

申请号：US17418144

申请日：2020-09-02

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Weiqing Han ,  Ruiqian Liu ,  Siqi Liu ,  Kajia Wei ,  Wei Li ,  Lu Wang ,  Lianjun Wang ,  Xiaodong Liu ,  Jiansheng Li ,  Xiuyun Sun ,  Jinyou Shen

IPC: C25D9/04 ,  C02F1/461 ,  C25D5/56 ,  G01N27/30

Abstract: The present invention relates to the technical field of electrocatalytic electrode preparation, and discloses a lead dioxide-carbon nanotube adsorptive electrochemical submicroelectrode, a preparation method, and use thereof. The electrochemical submicroelectrode according to the present invention comprises multiple layers of orderly arranged spherical lead dioxide submicroholes communicating with each other, where the carbon nanotubes are partially or completely inserted (in the form of twigs) in the lead dioxide hole and in the wall of the hole. The combined effect of adsorption and catalysis inside the submicroreactor effectively solves the problems of low catalytic efficiency and diffusion control associated with the conventional flat lead dioxide electrode, thus greatly improving the electrochemical catalytic performance of the electrode.

公开(公告)号：US20250078516A1

公开(公告)日：2025-03-06

申请号：US18681766

申请日：2023-04-20

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yong QI ,  Xin ZENG ,  Yuan ZHUANG

IPC: G06V20/54 ,  G06V10/75 ,  G06V10/80 ,  G06V20/70 ,  G08G1/017

Abstract: The present disclosure discloses a method and a system for detecting an abnormal traffic behavior. The method of the present disclosure includes: retaining an abnormal static target vehicle in a traffic surveillance video in a background through background modeling; performing abnormal target detection, and obtaining a cropped picture of an abnormal target vehicle and a cropped video clip through cropping; performing anomaly start time estimation, inputting the cropped picture and the cropped video clip to a network model combining twin cross-correlation with pseudo three-dimensional (P3D)-Attention, labeling a classification label on the cropped video clip, and determining a video frame when abnormal behavior occurs; and determining whether a to-be-matched vehicle is an abnormal target vehicle, and determining a start time and an end time of abnormal traffic behavior with reference to the video frame that is obtained when the abnormal behavior occurs.

公开(公告)号：US20240428361A1

公开(公告)日：2024-12-26

申请号：US18681976

申请日：2023-03-11

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yong QI ,  Borong LUAN ,  Zhuping ZHOU ,  Liu HE

IPC: G06Q50/40 ,  G06Q10/0631

Abstract: The present disclosure provides a coordinated and optimized dispatching method for electric buses and belongs to the technical field of smart buses. The present disclosure allows for comprehensive optimization of an electric bus dispatching strategy in time and space dimensions, establishment of a bi-level programming model for bus dispatching with consideration of a bus capacity, a transfer problem, and characteristics of electric buses, and solving of the model by a genetic algorithm. The present disclosure enables generation of a dispatching strategy for electric buses encompassing time and space aspects. The dispatching strategy is closer to an actual passenger flow situation and has better actual benefits.

公开(公告)号：US20240410065A1

公开(公告)日：2024-12-12

申请号：US18494215

申请日：2023-10-25

Applicant: Nanjing University of Science and Technology

Inventor： Dong LIU ,  Kai DENG ,  Hao FENG ,  Ying ZHANG ,  Qiang LI

IPC: C25B11/02 ,  C25B1/04

Abstract: The present invention discloses a rose petal effect-based biomimetic electrode and a membrane-less water electrolysis reactor utilizing the same, belongs to the technical field of catalytic technology for water electrolysis. The electrode has a surface exhibiting a microscopically alternating hydrophilic-hydrophobic periodic structure. The hydrophilic parts ensure good contact between the catalyst and the electrolyte solution, thereby guaranteeing the electrode's catalytic performance. The hydrophobic parts allow the gas generated at the electrode surface to be discharged through internal porous channels, preventing the formation of visible bubbles on the electrode surface and thereby fundamentally avoiding issues caused by bubble formation. The membrane-less water electrolysis reactor utilizing the electrode can eliminate bubble formation on the electrode surface, thereby avoiding problems related to bubble covering catalytic sites, bubble resistance, and gas mixing. Additionally, it reduces electrolyte resistance loss, making the performance of the membrane-less water electrolysis reactor approach that of membrane electrode reactors.

公开(公告)号：US20240224041A1

公开(公告)日：2024-07-04

申请号：US18577181

申请日：2023-02-23

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yong QI ,  Yangwei SUN

IPC: H04W12/121 ,  G06N20/00 ,  H04L12/40

CPC classification number: H04W12/121 ,  G06N20/00 ,  H04L12/40 ,  H04L2012/40215

Abstract: The present disclosure belongs to the technical field of security of the Internet of vehicles, and discloses an intrusion detection method and device for an in-vehicle controller area network. The method of the present disclosure includes: digitizing and normalizing collected original data, obtaining preprocessed data, and dividing the preprocessed data into a training set and a test set; conducting feature selection on the preprocessed data through a particle swarm optimization (PSO)-light gradient boosting machine (GBM) bidirectional feature selection method; and classifying test set data subjected to the feature selection with a stacking integrated model, and obtaining an intrusion detection result. The present disclosure is configured to efficiently and accurately detect intrusion information appearing in the in-vehicle controller area network, and prevent security incidents of the Internet of vehicles caused by intrusion into the in-vehicle controller area network.

公开(公告)号：US11960034B2

公开(公告)日：2024-04-16

申请号：US18296382

申请日：2023-04-06

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Dexin Ren ,  Mingwu Ren

IPC: G01S7/497 ,  G01S17/86 ,  G06T7/33 ,  G06T7/80

CPC classification number: G01S7/497 ,  G01S17/86 ,  G06T7/33 ,  G06T7/80 ,  G06T2207/10028 ,  G06T2207/20164 ,  G06T2207/30244

Abstract: The disclosure is a three-dimensional towered checkerboard for multi-sensor calibration, and a LiDAR and camera joint calibration method based on the checkerboard. The joint calibration method includes: establishing a modeling coordinate system taking the three-dimensional towered checkerboard as a basis, and generating a point cloud of the three-dimensional towered checkerboard; denoising a three-dimensional point cloud obtained by LiDAR, and obtaining an actual point cloud of the three-dimensional towered checkerboard under a LiDAR coordinate system; determining a transformation relationship between the LiDAR coordinate system and the modeling coordinate system; generating a corner point set of two-dimensional checkerboards under the modeling coordinate system in sequence according to actual positions of corners of the two-dimensional checkerboards, and transforming into the LiDAR coordinate system; obtaining a corner point set of the two-dimensional checkerboards on a photo; and calculating a transformation relationship between the camera coordinate system and the LiDAR coordinate system.

公开(公告)号：US11643674B2

公开(公告)日：2023-05-09

申请号：US17252168

申请日：2019-07-17

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Mingjie Jin ,  Xiangxue Chen ,  Xinchuan Yuan

IPC: C12P19/14

CPC classification number: C12P19/14 ,  C12P2201/00 ,  C12P2203/00

Abstract: Disclosed are methods for the pre-treatment of lignocellulose by adding an alkali or acid reagent(s) during the densification thereof, and for the biotransformation thereof. In the method, an alkali reagent(s) or acid reagent(s) is added to a lignocellulosic raw material for a densification pre-treatment to form an alkali- or acid-containing densified lignocellulose with a compressed compact shape, thereby achieving the pre-treatment. The acid or alkali in the pre-treated lignocellulose can further pre-treat the lignocellulosic raw material in a mild manner during the subsequent transportation and storage processes. If a subsequent pre-treatment is needed, then the severity thereof is reduced substantially; in addition, the uniform mixing of the acid or alkali with the lignocellulose and a large density of the raw material promote a high efficiency and a high loading capacity of the subsequent pre-treatment of the densified lignocellulose. The method is simple and efficient. The resulting lignocellulosic raw material has a large density, will not easily degrade or rot due to the inclusion of an acid or alkali, which is conducive to transportation and storage, and a high equipment utilization rate during the subsequent treatment is achieved.

公开(公告)号：US20230126706A1

公开(公告)日：2023-04-27

申请号：US18048824

申请日：2022-10-21

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Peng ZHU ,  Jun WANG

IPC: G06F16/27 ,  G06F17/10

Abstract: The present invention provides an information traceability method and system based on a blockchain. The method includes: receiving a traceability request, where the traceability request includes a type label, a time label, and a content label; accessing information path data pre-stored in the blockchain based on the type label to obtain target path data, where the target path data is single-source path data or multi-source path data; determining a corresponding primary data set based on the time label, where the target path data includes a plurality of primary data sets; determining a corresponding secondary data set based on the content label, where the primary data set includes at least one secondary data set; and extracting path information from the secondary data set, and obtaining at least one information source based on the path information. In the technical solution of the present invention, an information source can be quickly located based on different labels in the traceability request during information traceability, which reduces a volume of data traversed during searching for the information source, saves a time for searching for the information source, and has relatively high efficiency.