Patents by Inventor Junli Li
Junli Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240125743Abstract: A method for determining tobacco-specific nitrosamines (TSNAs) in cigarette smoke using one-step clean-up coupled with LC-MS/MS is provided, including the following steps: collecting a particulate matter of mainstream cigarette smoke with a Cambridge filter pad, mixing the particulate matter of mainstream cigarette smoke, an internal standards solution and water in a 50 mL plastic centrifuge tube, and vortexing the resulting mixture at room temperature to allow extraction; transferring an extraction solution after filtration to a new centrifuge tube, adding dichloromethane, and vortexing the resulting mixture; centrifuging to collect a dichloromethane extraction solution in a lower layer to another centrifuge tube, and placing the centrifuge tube in a water bath to remove dichloromethane; dissolving the resulting extraction solution in water, and transferring the resulting solution to an autosampler vial for LC-MS/MS analysis.Type: ApplicationFiled: November 20, 2023Publication date: April 18, 2024Applicant: Yunnan Academy Of Tobacco Agricultural SciencesInventors: Yong LI, Tao PANG, Junli SHI, Zhongbang SONG, Ge BAI, He XIE, Xingxiang WU, Niannian HU, Suxing TUO, Yunhui DAI
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Publication number: 20240085385Abstract: A method for determining tobacco-specific nitrosamines (TSNAs) in tobacco using one-step clean-up coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) is provided, including the following steps: destemming flue-cured tobacco or sun-cured tobacco, drying, milling, and passing through a sieve; mixing the resulting tobacco, an internal standards solution and water in a plastic centrifuge tube, and vortexing the resulting mixture at room temperature to allow extraction; transferring an extraction solution after filtration to a new centrifuge tube, adding dichloromethane, and vortexing the resulting mixture; centrifuging to collect a dichloromethane extraction solution in a lower layer to another centrifuge tube, and placing the centrifuge tube in a water bath to remove dichloromethane; dissolving the resulting extraction solution in water, and transferring the resulting solution to an autosampler vial for LC-MS/MS analysis.Type: ApplicationFiled: November 17, 2023Publication date: March 14, 2024Applicant: Yunnan Academy Of Tobacco Agricultural SciencesInventors: Yong LI, Tao PANG, Junli SHI, Zhongbang SONG, Ge BAI, He XIE, Xingxiang WU, Niannian HU, Suxing TUO, Yunhui DAI
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Publication number: 20240027371Abstract: Embodiments of the present application provide a detection method. The detection method includes: acquiring information of at least two first positions through which a particle passes before penetrating an object under detection, and information of at least two second positions through which the particle passes after penetrating the object under detection, wherein the object under detection is a metal product; reconstructing, based on the information of the at least two first positions, a first track before the particle penetrates the object under detection; reconstructing, based on the information of the at least two second positions, a second track after the particle penetrates the object under detection; processing the first track and the second track to obtain feature information of the object under detection; and determining, according to the feature information and preset feature information of an object of a target type, a detection result of the object under detection.Type: ApplicationFiled: November 25, 2021Publication date: January 25, 2024Inventors: Zhi ZENG, Jianmin LI, Ming RUAN, Yanli DENG, Guoping ZHU, Junli LI
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Publication number: 20230300887Abstract: A terminal (UE 200) receives a temporary identifier and offset information in an initial access channel when using a second frequency band different from a first frequency band allocated for mobile communication. Also, the terminal (UE 200) converts the received temporary identifier into an identifier for communication in the second frequency band based on the offset information.Type: ApplicationFiled: July 30, 2020Publication date: September 21, 2023Applicant: NTT DOCOMO, INC.Inventors: Daisuke Kurita, Shinya Kumagai, Hiroki Harada, Jing Wang, Xiaolin Hou, Liu Liu, Junli Li, Yong Li
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Publication number: 20230213666Abstract: Provided is a device of detecting a ray dose adaptable for coupling with a terminal, including: a housing, a scintillator and a light shielding layer. The housing has an accommodating space and a window, the accommodating space is in communication with the window; the scintillator is configured to receive a ray and convert a received ray into a visible light, the scintillator is located in the accommodating space, the scintillator covers the window, an outer surface of the scintillator includes a first outer surface and a second outer surface, and the first outer surface is adapted to a camera of the terminal; and the light shielding layer is configured to shield a visible light in an external environment from illuminating on the scintillator, the light shielding layer is arranged on the second outer surface of the scintillator.Type: ApplicationFiled: December 23, 2022Publication date: July 6, 2023Inventors: Jianmin LI, Guoping ZHU, Ming RUAN, Kun ZHAO, Yanli DENG, Junli LI, Qitian MIAO
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Patent number: 11619599Abstract: The present disclosure provides a substance identification device and a substance identification method. The substance identification device comprises: a classifier establishing unit configured to establish a classifier based on scattering density values reconstructed for a plurality of known sample materials, wherein the classifier comprises a plurality of feature regions corresponding to a plurality of characteristic parameters for the plurality of known sample materials, respectively; and an identification unit for a material to be tested, configured to match the characteristic parameter of the material to be tested with the classifier, and to identify a type of the material to be tested by obtaining a feature region corresponding to the characteristic parameter of the material to be tested.Type: GrantFiled: July 22, 2020Date of Patent: April 4, 2023Assignees: Tsinghua University, Nuctech Company LimitedInventors: Zhi Zeng, Xingyu Pan, Xuewu Wang, Junli Li, Ming Zeng, Jianmin Li, Ziran Zhao, Jianping Cheng, Hao Ma, Hui Zhang, Hao Yu, Bicheng Liu
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Publication number: 20230007689Abstract: A frame transmission method, includes: sending, by a first communication end to a second communication end, a first RTS on an unlicensed channel, wherein the first RTS carries a licensed frequency band source indication; receiving, according to the licensed frequency band source indication, an assist-clear to send (A-CTS) that is sent by the second communication end in a retreat state on the licensed channel; and sending, according to the A-CTS, a first clear-request to send (C-RTS) on the unlicensed channel, wherein the first C-RTS is configured for instructing a third communication end to exit the retreat state entered based on the first RTS.Type: ApplicationFiled: November 29, 2019Publication date: January 5, 2023Applicants: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Yajun ZHU, Wei HONG, Junli LI, Yong LI
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Publication number: 20220417978Abstract: A method for transmitting transmission block configuration parameter is provided. The method includes: sending first downlink control information (DCI) for scheduling a multi-transmission time interval transmission block, where the first DCI includes a preset indicator indicating that a configuration parameter that determines a transmission block size (TBS) of a retransmission TB scheduled by means of the first DCI is from the first DCI or second DCI, and the second DCI is DCI for scheduling a new transmission TB corresponding to the retransmission TB.Type: ApplicationFiled: November 28, 2019Publication date: December 29, 2022Applicants: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Yajun ZHU, Wei HONG, Junli LI, Yong LI
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Publication number: 20220294568Abstract: Disclosed is a hybrid automatic repeat request (HARD) feedback enhancement method. The method comprises: sending downlink control information comprising first indication information to a terminal, the first indication information being used for indicating the number of downlink transport blocks received by the terminal on a sub-frame after the current sub-frame and a sub-carrier after the current sub-carrier within the current HARO feedback window.Type: ApplicationFiled: August 7, 2019Publication date: September 15, 2022Applicants: Beijing Xiaomi Mobile Software Co., Ltd., Beijing University of Posts and TelecommunicationsInventors: Yajun ZHU, Wei HONG, Junli LI, Yong LI
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Publication number: 20220286233Abstract: A data transmission method includes: sending, by a network device, a fixed-length downlink control information (DCI), wherein the fixed-length DCI comprises a detection parameter corresponding to a variable-length DCI.Type: ApplicationFiled: July 30, 2019Publication date: September 8, 2022Applicants: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Yajun ZHU, Wei HONG, Junli LI, Yong LI
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Publication number: 20220078851Abstract: A random access method and a device thereof are provided. The method includes that a base station receives a random access preamble and sends a Random Access Response (RAR) according to the random access preamble, where the RAR indicates at least two time-frequency units, and the at least two time-frequency units are time-frequency units having different time domains on an unlicensed channel. Further, the base station receives a first random access message 3 (MSG3) sent on a first time-frequency unit by a first terminal and sends a first random access message 4 (MSG4) to the first terminal, where the first time-frequency unit is any one of the at least two time-frequency units, where the first MSG3 includes a terminal identifier of the first terminal, where the first MSG4 carries a terminal identifier of the first terminal and a first Cell-Radio Network Temporary Identifier allocated to the first terminal.Type: ApplicationFiled: January 18, 2019Publication date: March 10, 2022Applicants: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Wei HONG, Yajun ZHU, Junli LI, Yong LI
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Publication number: 20210395484Abstract: Provided are a process for preparing a flame retardant, a flame retardant obtained by the process and use of the flame retardant in a polymer composition.Type: ApplicationFiled: November 14, 2018Publication date: December 23, 2021Inventors: Gary WOODWARD, Junli LI, Yong YANG
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Patent number: 10939892Abstract: There are disclosed a collimator, a radiation emitting assembly and an inspection apparatus. The collimator is configured to collimate radiation from a radiation emitter. One of the collimator and the radiation emitter is provided with a protrusion portion and the other is provided with a recess portion such that the protrusion portion is capable of being placed within the recess portion and the radiation emitter and the collimator are allowed to be arranged close to and connected with each other, and that the radiation passes through passages in the protrusion portion and the recess portion from the radiation emitter to the collimator.Type: GrantFiled: November 30, 2017Date of Patent: March 9, 2021Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Guoping Zhu, Qitian Miao, Junli Li, Xiaoli Zhang
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Publication number: 20210025836Abstract: The present disclosure provides a substance identification device and a substance identification method. The substance identification device comprises: a classifier establishing unit configured to establish a classifier based on scattering density values reconstructed for a plurality of known sample materials, wherein the classifier comprises a plurality of feature regions corresponding to a plurality of characteristic parameters for the plurality of known sample materials, respectively; and an identification unit for a material to be tested, configured to match the characteristic parameter of the material to be tested with the classifier, and to identify a type of the material to be tested by obtaining a feature region corresponding to the characteristic parameter of the material to be tested.Type: ApplicationFiled: July 22, 2020Publication date: January 28, 2021Inventors: Zhi ZENG, Xingyu PAN, Xuewu WANG, Junli LI, Ming ZENG, Jianmin LI, Ziran ZHAO, Jianping CHENG, Hao MA, Hui ZHANG, Hao YU, Bicheng LIU
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Patent number: 10620336Abstract: The present disclosure relates to a method, a device and a system for inspecting a moving object based on cosmic rays, pertaining to the field of radiation imaging and safety inspection techniques. The method includes: detecting whether a speed of the inspected moving object is within a preset range; recording a motion trajectory of the moving object with a monitoring device; acquiring information about charged particles in the cosmic rays with a position sensitive detector, the information about charged particles including track information of the charged particles; determining the moving object by matching positions of the motion trajectory and the track information; reconstructing the track of the charged particles according to the information about the charged particles; and recognizing the material inside the moving object based on the track reconstruction.Type: GrantFiled: January 20, 2017Date of Patent: April 14, 2020Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Kejun Kang, Jianping Cheng, Zhiqiang Chen, Ziran Zhao, Junli Li, Xuewu Wang, Zhi Zeng, Qingjun Zhang, Jianping Gu, Xi Yi, Bicheng Liu, Guangming Xu, Yongqiang Wang
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Patent number: 10613247Abstract: The present application relates to a method, apparatus and system for inspecting an object based on a cosmic ray, pertaining to the technical field of radiometric imaging and safety inspection. The method includes: recording a movement trajectory of an inspected object by using a monitoring device; acquiring information of charged particles in the cosmic ray by using a position-sensitive detector, the information of charged particles comprising trajectory information of the charged particles; performing position coincidence for the movement trajectory and the trajectory information to determine the object; performing trajectory remodeling for the charged particles according to the information of charged particles; and identifying a material inside the moving object according to the trajectory remodeling.Type: GrantFiled: January 20, 2017Date of Patent: April 7, 2020Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Kejun Kang, Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Junli Li, Xuewu Wang, Yaohong Liu, Zhi Zeng, Jianping Gu, Song Liang, Bicheng Liu, Guangming Xu, Yongqiang Wang
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Patent number: 10580964Abstract: The present invention relates to a memory device including a substrate and a lower electrode, buffer layer, seed layer, Magnetic Tunnel Junction (MTJ), capping layer, synthetic antiferromagnetic layer, and upper electrode formed on the substrate.Type: GrantFiled: September 18, 2017Date of Patent: March 3, 2020Assignee: Industry-University Cooperation Foundation Hanyang UniversityInventors: Jea Gun Park, Du Yeong Lee, Song Hwa Hong, Jin Young Choi, Seung Eun Lee, Junli Li
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Patent number: 10446288Abstract: The present invention provides a ray beam guiding device for guiding a ray beam in a ray inspection apparatus. The ray beam guiding device is provided in a housing of the ray inspection apparatus, and two ends of the ray beam guiding device are connected to a front collimator and a rear collimator, respectively. The ray beam guiding device comprises a plurality of guiding walls and a guiding cavity surrounded by the guiding walls. The guiding wall is formed of a first material which is capable of absorbing rays or the first material is coated on an inside of the guiding wall, and the guiding cavity has a central axis extending in a direction from the rear collimator to the front collimator, and the ray beam guiding device further comprises at least one fin plate provided in the guiding cavity of the ray beam guiding device. The at least one fin plate is configured for blocking and/or absorbing scattered rays.Type: GrantFiled: July 12, 2016Date of Patent: October 15, 2019Assignees: Nuctech Company Limited, Nuctech Jiangsu Company LimitedInventors: Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Wanlong Wu, Junli Li, Ming Ruan, Guangwei Ding
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Publication number: 20180308602Abstract: The present invention provides a ray beam guiding device for guiding a ray beam in a ray inspection apparatus. The ray beam guiding device is provided in a housing of the ray inspection apparatus, and two ends of the ray beam guiding device are connected to a front collimator and a rear collimator, respectively. The ray beam guiding device comprises a plurality of guiding walls and a guiding cavity surrounded by the guiding walls. The guiding wall is formed of a first material which is capable of absorbing rays or the first material is coated on an inside of the guiding wall, and the guiding cavity has a central axis extending in a direction from the rear collimator to the front collimator, and the ray beam guiding device further comprises at least one fin plate provided in the guiding cavity of the ray beam guiding device. The at least one fin plate is configured for blocking and/or absorbing scattered rays.Type: ApplicationFiled: July 12, 2016Publication date: October 25, 2018Inventors: Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Wanlong Wu, Junli Li, Ming Ruan, Guangwei Ding
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Patent number: 10031261Abstract: The disclosure provides a method for measuring X-ray energy of an accelerator in an inspection system. the method comprises: building a database comprising correspondence between half-value layer (HVL) and energy under a predetermined condition; measuring HVL for X-rays of the accelerator in the inspection system on line under the same predetermined condition; and comparing the measured HVL with the HVLs in the database comprising correspondence between HVL and energy to determine the X-ray energy of the accelerator. The method is applicable to a large-scale container/vehicle inspection system for measurement of X-ray energy/HVL of the accelerator so as to acquire source state of the inspection system in real time.Type: GrantFiled: December 18, 2015Date of Patent: July 24, 2018Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Yanli Deng, Qitian Miao, Junli Li, Guoping Zhu, Weiqiang Guan, Yuxin Hu, Shenjin Ming, Ming Huang