公开(公告)号：US20210144278A1

公开(公告)日：2021-05-13

申请号：US16618376

申请日：2018-01-18

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Jun LI ,  Miao LEI ,  Xiaofang DAI ,  Shangyuan WANG ,  Ting ZHONG ,  Chuangxue LIANG ,  Chen WANG ,  Ping XIE ,  Ruiqiang WANG

IPC: H04N5/225 ,  G02B5/30 ,  G06F17/16

Abstract: A compressed sensing based object imaging system and an imaging method thereof. The object imaging system comprises a light source generation unit (11), a filter unit (12), an image generation unit (13), an image acquisition unit (14), and an image reconstruction unit (15). The light source generation unit (11) generates experimental laser; the filter unit (12) filters high frequency scattered light and forms parallel light; the image generation unit (13) generates an experimental image in which an object image (16) and a specific measurement matrix (17) are superimposed; the image acquisition unit (14) performs compression sampling on the generated experimental image; and the image reconstruction unit (15) reconstructs sampling data to restore the object image (16). The imaging method comprises: establishing a sample database comprising the specific target object image (16); training sample images to obtain the specific measurement matrix (17); and simultaneously completing image sampling, image compression and image recognition in an all-optical system. The system and the method can greatly reduce the data volume recorded in image recognition and image matching, thus improving the real-time performance of the system, and providing a possibility of concurrent processing by machine vision and artificial intelligence.

公开(公告)号：US10899628B2

公开(公告)日：2021-01-26

申请号：US16094939

申请日：2018-03-15

Applicant: South China Normal University

Inventor： Ruqiang Huang ,  Qian Wang ,  Guanghua Wang ,  Jinghui Wang ,  Linlin Gao ,  Jingwen Zhang

IPC: C01F17/282 ,  G01N31/00

Abstract: The disclosure discloses cerium sulfate chelated sulfur dioxide, a preparation method and a use thereof. The cerium sulfate chelated sulfur dioxide has a molecular formula of Ce[SO4][SO2].2H2O. It is a white crystal and the preparation method thereof may comprise the following steps: adding anhydrous cerium sulfate to dilute sulfuric acid with stirring for dissolvation; adding a solvent followed by refluxing at 45-50° C. for 2.0-2.5 h; heating the reaction product to remove the solvent, cooling to 20° C. or lower, and adding dilute sulfuric acid to allow precipitation of all crystals; cooling down the product followed by suction filtration, washing the obtained crystals by the solvent, so that crude cerium sulfate chelated sulfur dioxide can be obtained. The solubility of the cerium sulfate chelated sulfur dioxide of the disclosure has been significantly improved compared to the anhydrous cerium sulfate. The obtained solution is colorless and transparent, so that the cerium sulfate chelated sulfur dioxide can be used as a better titrant with wide application and supreme performance.

公开(公告)号：US20190318695A1

公开(公告)日：2019-10-17

申请号：US16469892

申请日：2017-11-08

Applicant: SOUTH CHINA NORMAL UNIVERSITY ,  SHENZHEN GUOHUA OPTOELECTRONICS CO., LTD. ,  ACADEMY OF SHENZHEN GUOHUA OPTOELECTRONICS

Inventor： Guofu ZHOU ,  Li WANG ,  Pengfei BAI ,  Zichuan YI

IPC: G09G3/34 ,  G09G3/20

Abstract: A device and method for eliminating an image border of electrophoretic electronic paper includes the following steps: S1, acquiring gray-scale driving waveform information and gray-scale position information, wherein the driving waveform information comprises a level value and a duration corresponding thereof; S2, outputting regulation waveform information based on an termination level value of a first gray scale, a level duration and a starting level value of a second gray scale, wherein the regulation waveform information comprises a level value, an embedding time and an embedding position of a waveform; and S3, modifying the gray-scale driving waveform information based on the regulation waveform information, and controlling an output of a drive electrode based on the modified gray-scale driving waveform information. By using the device and method, an impact of the fringe electric field on movement of electronic paper micro-capsules is eliminated, thus effectively reducing border ghosting.

公开(公告)号：US09779672B2

公开(公告)日：2017-10-03

申请号：US15123970

申请日：2014-03-06

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Shenzhen Guohua Optoelectronics Institute

Inventor： Guofu Zhou ,  Fahong Li ,  Robert Andrew Hayes

IPC: G02B1/06 ,  G09G3/34 ,  G02B26/00

CPC classification number: G09G3/348 ,  G02B26/005 ,  G09G3/2007

Abstract: An oil puncture controlled starting system for an EFD apparatus and manufacturing method therefor, wherein the EFD display structure comprises a base arranged below a lower electrode, and the base is provided with a step, such that a first liquid has a first thickness outside the step and a second thickness on the step, which is less than the first thickness, such a thickness difference renders the first liquid on the step to be punctured by a second liquid firstly when a lower voltage is applied between a upper electrode and the lower electrode, and the first liquid is pushed by the second liquid to move from a first area to a second area.

公开(公告)号：US20150340551A1

公开(公告)日：2015-11-26

申请号：US14130624

申请日：2012-12-26

Applicant: South China Normal University

Inventor： Ting Mei ,  Naiyin Wang ,  Hao Li ,  Lei Wan

IPC: H01L33/06 ,  H01S5/343 ,  H01S5/042 ,  H01L33/14

CPC classification number: H01L33/06 ,  H01L33/14 ,  H01L33/145 ,  H01S5/0421 ,  H01S5/2009 ,  H01S5/3054 ,  H01S5/34333 ,  H01S5/34346 ,  H01S2301/17

Abstract: The present invention discloses an epiaxial structure for semiconductor light-emitting device, comprising an electron injection region, a hole injection region, a multi-quantum well active region, a potential barrier layer for blocking carriers, and one or more band edge shaping layers. The doping type and/or doping concentration of said band edge shaping layers are different from those of the adjacent layers. It may trim the band edge shape of the semiconductor energy band through the local built-in electric field formed as a result of adjusting the doping type, doping concentration and/or layer thickness thereof, such that the carriers in the multi-quantum well active region are distributed uniformly, the overall Auger recombination is decreased, and the effective potential barrier height of the potential barrier layer for blocking carriers is increased to reduce the drain current formed by carriers overflowing out of the multi-quantum well active region, thereby improving internal quantum efficiency. The present invention further discloses a semiconductor light-emitting device that employs said epiaxial structure, which similarly achieves the effects of reduced Auger recombination and/or decreased drain current through the trimming of the band edge shape of the energy band structure by the local built-in electric field, thereby improving internal quantum efficiency of the device.

Abstract translation: 本发明公开了一种半导体发光器件的双轴结构，包括电子注入区，空穴注入区，多量子阱有源区，用于阻挡载流子的势垒层和一个或多个带边成形层。 所述带边缘成形层的掺杂类型和/或掺杂浓度与相邻层的掺杂类型和/或掺杂浓度不同。 其可以通过调整掺杂类型，掺杂浓度和/或层厚度而形成的局部内置电场来修整半导体能带的带边缘形状，使得多量子阱活性中的载流子 区域均匀分布，整个俄歇复合减小，阻挡载流子的势垒层的有效势垒高度增加，以减少由多量子阱有源区溢出的载流子形成的漏极电流，从而改善内部 量子效率。 本发明还公开了采用所述的双轴结构的半导体发光器件，其类似地实现了通过局部内置结构的能带结构的带边缘形状的修整来减小俄歇复合和/或降低的漏极电流的效果， 在电场中，从而提高器件的内部量子效率。

公开(公告)号：US12176573B2

公开(公告)日：2024-12-24

申请号：US17605430

申请日：2020-10-14

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Weishan Li ,  Yucheng Wen ,  Huiyang Chen ,  Jiawei Chen ,  Yitong Lu ,  Yanxia Che

IPC: H01M50/426 ,  H01M4/131 ,  H01M4/133 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0525 ,  H01M50/449

Abstract: Provided is a method for preparing a battery separator coating material, the method comprising: dissolving PVDF and a covalent organic backbone material in an organic solvent and stirring same until uniform. The mass ratio of the PVDF to the covalent organic backbone material to N-methylpyrrolidone is 20:(70-85):(5-10). When the material is applied to preparation of a lithium ion battery separator, the problem of metal dissolution when a transition metal oxide is used as a positive electrode material can be effectively solved. The prepared separator can effectively adsorb metal ions and prevent the metal ions from being deposited on a negative electrode during charging and discharging processes, such that the cycle performance of a transition metal oxide positive electrode material is improved.

公开(公告)号：US20240409986A1

公开(公告)日：2024-12-12

申请号：US18268964

申请日：2022-05-06

Applicant: South China Normal University

Inventor： Xiaoming ZHOU ,  Menglu HU

IPC: C12Q1/6844 ,  C12N9/22 ,  C12N15/11

Abstract: The present invention discloses a nucleic acid detection kit and a detection method based on photo-controlled CRISPR-Cas, wherein the kit comprises silent guide RNA and Cas protein; the silent guide RNA is formed by annealing hybridization of silent nucleotide and guide RNA; the guide RNA, designed according to a target nucleic acid sequence, includes two regions, i.e. a repetitive region and a spacer region; the silent nucleotide is completely complementarily paired with a the of the guide RNA, or is completely paired with a the of the guide RNA; the bases of the silent nucleotide are linked by PC linker; and the Cas protein is Cas12 protein or Cas13 protein. Although this method separates the nucleic acid amplification from the CRISPR-Cas detection in time, it can allow them to be completed in the same closed reaction tube, thereby avoiding the transfer process of uncapped reagent, ensuring that the detection is not affected by aerosol pollution while ensuring high detection sensitivity.

公开(公告)号：US20240023886A1

公开(公告)日：2024-01-25

申请号：US18480906

申请日：2023-10-04

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Han ZHANG ,  Weiwei ZHU ,  Songbin YE ,  Baoxian YU

IPC: A61B5/00 ,  G16H50/20 ,  G06N20/20 ,  A61B5/11

CPC classification number: A61B5/4818 ,  G16H50/20 ,  G06N20/20 ,  A61B5/1102 ,  A61B5/7203 ,  A61B5/7267

Abstract: A noninvasive method and system for sleep apnea detection. The noninvasive method for sleep apnea detection comprises: collecting vital sign signals of a sleeping user; performing structured processing on the vital sign signals of the sleeping user to remove invalid signals to obtain a set of valid vital sign signals; extracting multi-dimensional morphological features from a sleep respiratory signal and performing feature training on multiple initial models of a classifier by means of the multi-dimensional morphological features to obtain a sleep breathing detection model; and inputting the set of valid vital sign signals into the sleep breathing detection model and performing signal processing to obtain probability data of the sleeping user experiencing sleep apnea; inputting the set of valid vital sign signals into a sleep breathing detection model and performing signal processing to obtain predicted probability of the sleeping user suffering from sleep apnea.

公开(公告)号：US20230397612A1

公开(公告)日：2023-12-14

申请号：US18096538

申请日：2023-01-12

Applicant: South China Normal University

Inventor： Sichun ZHENG ,  Yiguang LIN ,  Huijun JI

IPC: A01N63/60 ,  C12N15/113 ,  A01P7/04 ,  A01N25/30 ,  A01N25/06

CPC classification number: A01N63/60 ,  C12N15/113 ,  A01P7/04 ,  A01N25/30 ,  A01N25/06 ,  C12N2310/141 ,  C12N2330/51

Abstract: A miRNA, derivative and use thereof are disclosed. The miRNA comprises a nucleic acid sequence as shown in SEQ ID NO. 1 or a nucleic acid sequence obtained by modifying, substituting, deleting or adding at least one base to the nucleic acid sequence as shown in SEQ ID NO. 1. According to the disclosure, the used miRNA is derived from Glycine max, is safe to human beings and has no effect on a rice plant; and the derivative of the miRNA obtained by modification also retains the effects and characteristics of the miRNA, can be used as a novel insecticide for safely and effectively preventing and controlling brown planthopper, can be directly used on a transgenic plant, and has a practical application value for brown planthopper prevention and control.

公开(公告)号：US11215811B2

公开(公告)日：2022-01-04

申请号：US16478185

申请日：2017-11-15

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu Zhou ,  Rui Zhou ,  Hongwei Jiang ,  Yuanyuan Guo

IPC: G02B26/00 ,  B05C11/10 ,  G02B1/06 ,  G09G3/34 ,  H01L21/67

Abstract: Disclosed is a drying-wetting separated filling method and a filling apparatus for an electrowetting display device. The filling method comprises filling a non-polar solution into pixel grids on a lower substrate of an electrowetting display device in air, and filling a polar solution to immediately cover the non-polar solution filled after filling the non-polar solution into the pixel grids. Compared with filling the non-polar solution into the polar solution, directly filling the non-polar solution in air has better filling uniformity, easier operation and control. With the method, the fillings of the polar solution and the non-polar solution are easy, having a higher filling efficiency, and no air bubble residue.