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公开(公告)号：US20230360418A1
公开(公告)日：2023-11-09
申请号：US17414551
申请日：2021-05-28
Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Zechao LI , Jinhui TANG , Huang LI
IPC: G06V30/146 , G06V30/148 , G06V20/62 , G06V30/18
CPC classification number: G06V30/1463 , G06V30/153 , G06V20/62 , G06V30/1801
Abstract: The present disclosure discloses a character offset detection method and system. The method includes: acquiring a text image; performing character separation based on the text image to obtain a character text region; calculating a center point of each rectangular box in the character text region to obtain a center point set; determining an optimal fitted curve based on the center point set; and analyzing character offset based on the optimal fitted curve to obtain an offset result. The present disclosure realizes detection of the character offset based on curve fitting, so that the accuracy of detection is improved.
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公开(公告)号：US11762879B2
公开(公告)日：2023-09-19
申请号：US18048824
申请日：2022-10-21
Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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.
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23.发明申请公开(公告)号：US20220217170A1
公开(公告)日：2022-07-07
申请号：US17506607
申请日：2021-10-20
Applicant: Nanjing University of Science and Technology
Abstract: An intrusion detection method and system for Internet of Vehicles based on Spark and combined deep learning are provided. The method includes the following steps: S1: setting up Spark distributed cluster; S2: initializing the Spark distributed cluster, constructing a convolutional neural network (CNN) and long short-term memory (LSTM) combined deep learning algorithm model, initializing parameters, and uploading collected data to a Hadoop distributed file system (HDFS); S3: reading the data from the HDFS for processing, and inputting the data to the CNN-LSTM combined deep learning algorithm model, for recognizing the data; and S4: dividing the data into multiple resilient distributed datasets (RDDs) for batch training with a preset number of iterations.
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公开(公告)号：US20210325654A1
公开(公告)日：2021-10-21
申请号：US17294322
申请日：2019-07-05
Applicant: Nanjing University of Science and Technology
Inventor： Qian CHEN , Chao ZUO , Yao FAN , Jiasong SUN , Jiaji LI , Shijie FENG , Yuzhen ZHANG
Abstract: The patent discloses a differential phase contrast (DPC) quantitative phase microscopy method based on the optimal illumination pattern design. Firstly, the optimal illumination pattern corresponding to the isotropic phase transfer function of DPC quantitative phase imaging is derived, which is determined as a semi-annular illumination pattern with the illumination numerical aperture NAill equal to the numerical aperture NAobj of the objective lens. The illumination intensity distribution varies with the cosine of the illumination angle, and it can be expressed as S(θ)=cos(θ). This patent effectively compensates for the frequency loss of phase transfer, not only the high-frequency responses of PTF are enhanced, but also the transfer responses of low-frequency phase information is significantly improved. As a result, the optimal illumination scheme ensures the correctness and achieves high resolution phase reconstruction, while the number of illuminations is reduced to a minimum of two, which greatly increases the imaging speed, allowing for real-time dynamic, high-correctness, high-resolution phase imaging results.
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公开(公告)号：US10737952B2
公开(公告)日：2020-08-11
申请号：US16155212
申请日：2018-10-09
Inventor： Dongqiang Zhu , Bingyu Wang , Chenhui Wei
Abstract: The present invention discloses a method for initiating a graphene oxide (GO) through reduction by a reductant to controllably release organic compounds, comprising the following steps: (1) mixing GO and a buffer solution; (2) further mixing with a sewage containing organic contaminants; (3) conducting solid-liquid separation, mixing the solid phase and the pure, introducing and N2; (4) further adding the reductant; (5) conducting sequential batch kinetics experiment. The present invention utilizes the size effect and polarity control of GO to selectively adsorb aromatic organic contaminants in sewage and fully transfer the selectively adsorbed organic contaminants from a large amount of sewage to a small amount of pure water by initiating using the reductant, and no extraction of the organic phase is required, the time for purification is reduced, and the energy consumption for purification is also reduced.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20200209604A1
公开(公告)日：2020-07-02
申请号：US16633037
申请日：2018-02-26
Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Qian CHEN , Chao Zuo , Jiasong SUN , Shijie FENG , Yuzhen ZHANG , Guohua GU
Abstract: The invention discloses a programmable annular LED illumination-based high efficiency quantitative phase microscopy imaging method, the proposed method comprising the following steps: the derivation of system optical transfer function in a partially coherent illumination imaging system; the derivation of phase transfer function with the weak object approximation under the illumination of tilted axially symmetric coherent point illumination source; the extension of illumination from an axially symmetric coherence point source to a discrete annular point source, and the optical transfer function can be treated as an incoherent superposition of each pair of tilted axially symmetric coherent point sources. The acquisition of raw intensity dataset; the implementation of deconvolution for quantitative phase reconstruction. The invention derives the system phase transfer function under the tilted axially symmetric point light source in the case of partially coherent illumination, and promotes the optical phase transfer function of the discrete annular point light source. The programmability characteristic of LED array enables the annular illumination aperture to be flexibly adjustable, being applicable to different microscopic objects with different numerical apertures, and improving the compatibility and flexibility of the system.
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公开(公告)号：US10570531B2
公开(公告)日：2020-02-25
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
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. %).
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公开(公告)号：US12246977B2
公开(公告)日：2025-03-11
申请号：US17883032
申请日：2022-08-08
Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY , ZHENRUN ENVIRONMENTAL SCIENCE AND TECHNOLOGY CO., LTD.
Inventor： Jinyou Shen , Hebing Zhang , Jing Wang , Junfeng He , Xinbai Jiang , Hong Wang , Cheng Hou , Xiaodong Liu
IPC: C02F3/30 , C02F1/52 , C02F3/12 , C02F3/34 , C02F101/16 , C02F101/20 , C02F101/34 , C02F101/38 , C02F103/34
Abstract: The present invention relates to the technical field of wastewater treatment, and discloses a bioaugmentation treatment process for lithium battery producing wastewater. The method comprises the following steps: 1) introducing wastewater into a hydrolytic acidification tank, and adding Enterobacter sp. NJUST50 and activated sludge to the hydrolytic acidification tank for hydrolytic acidification treatment; 2) introducing the effluent into an anoxic tank, and adding Enterobacter sp. NJUST50 and anaerobic activated sludge for anoxic treatment; 3) introducing the effluent into an aerobic tank, and adding Enterobacter sp. NJUST50 and aerobic activated sludge for aerobic treatment; 4) introducing the effluent into an anoxic filter tank, and adding Enterobacter sp. NJUST50 and anaerobic activated sludge to the filter tank for treatment; and 5) introducing the effluent into a biological aerated filter tank, and adding a sludge mixture of Enterobacter sp. NJUST50 with aerobic activated sludge to the filter tank for treatment.
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29.发明授权公开(公告)号：US12221356B2
公开(公告)日：2025-02-11
申请号：US17638437
申请日：2020-07-31
Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Wenchao Zhang , Chunpei Yu , Junhong Chen , Zilong Zheng , Yajie Chen , Jiaxin Wang , Bin Hu , Jiahai Ye , Zhichun Qin , Guirong Tian
Abstract: Provided is a method for preparing copper azide and cuprous azide encapsulated by conductive metal-organic framework. The method uses a conductive copper-containing metal-organic framework material as a precursor, and completes the azidation of the precursor by means of a liquid-solid electrochemical azidation reaction. Copper azide and cuprous azide nanocrystals are highly uniformly embedded within a conductive framework, which may effectively avoid the agglomeration of copper azide and cuprous azide, and reduce static charge generated by friction, displacement, and the like. Meanwhile, the conductive framework may promote the effective transfer of charge, avoid the accumulation of static charge, and improve the electrostatic safety. In addition, the liquid-solid electrochemical azidation reaction has advantages such as being safe and efficient, having a short reaction time and having strong operability, and the preparation process is compatible with a MEMS process, which is beneficial for the application of copper azide and cuprous azide materials in micro devices.
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30.发明授权公开(公告)号：US12190495B2
公开(公告)日：2025-01-07
申请号：US18681461
申请日：2023-09-22
Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Zhishan Gao , Jianqiu Ma , Qun Yuan , Yifeng Sun , Xiao Huo , Shumin Wang , Jiale Zhang , Xiaoxin Fan
Abstract: The present disclosure discloses a microscopic non-destructive measurement method of a microstructure linewidth based on a translation difference, based on a conventional microscopic imaging method, a high-precision displacement platform is used to move a to-be-measured sample, one microscopic image of the sample is acquired before and after the displacement separately, subtraction is performed on the two image to obtain a differential image, a light intensity distribution function of the differential image is derived, data fitting is performed on the differential image, and a high-precision sample linewidth measurement result is obtained by using the characteristic of a high differential pulse positioning resolution. The linewidth measurement method of the present disclosure retains the advantages of intuitiveness, quickness, and non-destructive measurement of the microscopic imaging method, breaks through the microscopic imaging diffraction limit, and reducing the impact of uneven illumination and imaging system noise, thereby improving the linewidth measurement accuracy
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