Patents by Inventor Xian Zhang

Xian Zhang 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).

  • Publication number: 20220373155
    Abstract: The present invention relates to a lamp for a vehicle and a vehicle. The lamp includes a housing and a light source arranged in the housing, an opening of the housing being divisible into one or more light emitting regions to correspondingly realize a predetermined light function, wherein the at least one light emitting region is provided with a light distribution element for the light source, the light distribution element having a first light distribution portion and a second light distribution portion, the first light distribution portion being configured to cause light of the light source to leave the light emitting region within a first angular range, and the second light distribution portion being configured to cause light of the light source to leave the light emitting region within a second angular range that is different from the first angular range.
    Type: Application
    Filed: November 6, 2020
    Publication date: November 24, 2022
    Applicant: VALEO VISION
    Inventors: Zhujun WANG, Xian ZHANG, Kang YE
  • Publication number: 20220360079
    Abstract: Disclosed is an optimal power flow acquiring method for regional distribution network of small hydropower groups based on deep learning, which specifically includes the following steps: generating required data sets by adopting continuous power flow and power flow equation calculation methods; the data set is randomly divided into training data (80 percent) and test data (20 percent); training the built convolutional neural network model with training data to learn the mapping relationship between load and generator output power; inputting test data, and directly obtaining PG and QG from the trained convolutional neural network; and solving residual variables Vi and ?i with traditional power flow solver. The application can accelerate the solving speed of the optimal power flow problem with higher prediction accuracy.
    Type: Application
    Filed: April 24, 2022
    Publication date: November 10, 2022
    Applicant: GUANGXI UNIVERSITY
    Inventors: Xiaoqing BAI, Biyun CHEN, Yujing JIA, Bin LI, Peijie LI, Yun ZHU, Ge ZHANG, Yunyi LI, Tianyi DIAO, Guang LIU, Danlei CHEN, Shangfu WEI, Xian TANG, Liqin ZHENG, Xinwen WANG, Songyang ZHU, Zonglong WENG, Qinghua SHANG, Rui WANG, Puming WANG, Xiaoqing SHI
  • Patent number: 11490387
    Abstract: Example communication methods and apparatus that are applied to discrete narrowband communication information are described. One example communication method includes sending first indication information to a terminal by a network device. The first indication information includes a frequency channel number of a start sub-band in all discrete sub-bands of a serving cell in which the terminal is currently located, a bitmap representing whether each sub-band in a frequency band belongs to the serving cell, and a frequency spacing between sub-bands in the frequency band. The frequency band is a frequency band to which all the discrete sub-bands of the serving cell belong. The network device sends second indication information to the terminal, wherein the second indication information is used to indicate a sub-band available to the terminal in all the discrete sub-bands of the serving cell.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: November 1, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Nizhong Lin, Lingli Pang, Xian Zhang, Zhang Zhang, Xinzheng Wang, Xinyou Ma
  • Publication number: 20220323506
    Abstract: In various aspects and embodiments the invention provides a method of treating multiple sclerosis in a subject in need thereof, the method comprising administering to the subject an effective amount of an oligodendrocyte-derived extracellular vesicle.
    Type: Application
    Filed: June 3, 2020
    Publication date: October 13, 2022
    Inventors: Abdolmohamad ROSTAMI, Giacomo CASELLA, Bogoljub CIRIC, Guang-Xian ZHANG
  • Publication number: 20220301054
    Abstract: The invention relates to a block bidding method and system for promoting clean energy consumption based on the power trading platform. The block bidding method includes the following steps: dividing the time slots for clean energy units to participate in power trading; predicting the typical monthly power generation curve of clean energy units; decomposing the signed annual power contract of clean energy units into months; determining the monthly trading declaration curve of clean energy units; determining the monthly trading declaration curve of clean energy units; determining the time-slot declaration price of clean energy units; realizing the trading clearing by the power trading platform in accordance with the principle of “high-low matching”.
    Type: Application
    Filed: April 28, 2021
    Publication date: September 22, 2022
    Inventors: Lei WANG, Kai XIE, Yali ZHANG, Wujun DONG, Honghai TANG, Ning YANG, Hao TAN, Liang XU, Nan KANG, Peiyu XI, Haining WANG, Shijie JI, Qingbo WANG, Chuncheng GAO, Yin FANG, Shuhong SHI, Mingzhu YUAN, Qian ZHANG, Wentao LV, Jingwei LV, Wanli HU, Ziyang BAI, Junliang LV, Jincheng ZHANG, Xian ZHAO, Xin CHANG, Shulu WAN, Shoubao LI, Ruixiao LI, Ying XUE, Xuan YIN
  • Publication number: 20220298902
    Abstract: The present disclosure relates to the technical field of oil-gas field development, and discloses a shale oil fracturing synchronous energizing simulation experimental device and method. The shale oil fracturing synchronous energizing simulation experimental device comprises a liquid supply system, a confining pressure loading system, a fracturing system, an energizing system and a recovery system, wherein the liquid supply system is used for storing fluid and can inject the fluid into the fracturing system; the fracturing system can bear a test piece, receive the fluid injected by the liquid supply system and serve as seepage space of the fluid; the confining pressure loading system is used for providing simulated confining pressure for the test piece; the energizing system is used for simulating an energizing effect on a test piece after fracturing liquid is injected; and the recovery system is used for collecting discharged liquid and separating and metering the discharged liquid.
    Type: Application
    Filed: March 11, 2022
    Publication date: September 22, 2022
    Applicant: China University of Petroleum (East China)
    Inventors: Sen Wang, Qihong Feng, Yichun Wang, Xianmin Zhang, Jiyuan Zhang, Xian Shi
  • Publication number: 20220292112
    Abstract: In an approach to improve asynchronous replication in database clusters embodiments retain committed transactions during database cluster replication. Embodiments build and run asynchronous replication logic using database nodes running as one or more standalone nodes, wherein the asynchronous replication logic is responsible for data replication from a primary database node to one or more secondary database nodes. Embodiments register a replication reader to a sender node to replicate journal logs and replay the journal logs on the one or more secondary database nodes. Further, embodiments monitor replication lag metrics from the sender node and notify a replication source and a replication target of a generated replication plan, wherein the cluster controller instructs the replication source and the replication target to be ready to initiate the replication plan. Additionally, embodiments adjust a replication plan to allow the asynchronous replication logic to catch up and complete uncommitted transactions.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 15, 2022
    Inventors: Xiao Yi Tian, Guoxiang Zhang, XIAN WEI ZHANG, XiangXing Shi, Peng Hui Jiang, Zhang Li
  • Patent number: 11423792
    Abstract: An aerial system includes a body, a lift mechanism coupled to the body, a processing system, and at least one camera. The aerial system also includes a first motor configured to rotate the at least one camera about a first axis and a second motor configured to rotate the at least one camera about a second axis. The processing system is configured to determine a direction of travel of the aerial system and to cause the first motor and the second motor to automatically orient the at least one camera about the first axis and the second axis such that the at least one camera automatically faces the direction of travel of the aerial system.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: August 23, 2022
    Assignee: Hangzhou Zero Zero Technology Co., Ltd.
    Inventors: Lei Zhang, Xian Su, Zhaozhe Wang, Wei Sun, Tong Zhang, Mengqiu Wang
  • Patent number: 11409285
    Abstract: A method and system for navigating traffic for an autonomously controllable vehicle operates by detecting at least one target vehicle within a traffic environment with at least one sensor disposed on a primary vehicle. The system obtains information with a plurality of sensors disposed on the primary vehicle of the traffic environment and the at least target vehicle and predicts a maneuver of the at least one target vehicle with a controller disposed on the primary vehicle for a future time based on the information obtained relating to the traffic environment and the at least one target vehicle. The system further generates a recommended path for the primary vehicle with the controller that avoids conflicts with a future position of the at least one target vehicle based on predicted maneuvers of the at least one target vehicle.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: August 9, 2022
    Assignee: Continental Automotive Systems, Inc.
    Inventor: Xian Zhang
  • Publication number: 20220246470
    Abstract: The present invention relates to a method of forming contact holes of a CMOS device and a method of making a CMOS device. Because a carbon cap layer or a carbon rich layer is formed on a etching stop layer, when etching reaches the etching stop layer with less depth, great polymer protecting the etching stop layer from etching will be formed in the etching stop layer. As such, when etching reaches the contact holes with more depth, the contact holes with less depth may be protected from over-etching until etching the contact holes with more depth is finished. Over-etching may be avoided, and meanwhile the contact holes with more depth may be fully etched to avoid from under-etching.
    Type: Application
    Filed: January 25, 2022
    Publication date: August 4, 2022
    Applicant: SiEn (QingDao) Integrated Circuits Co., Ltd.
    Inventors: Min-Hwa CHI, Zhaosheng MENG, Xian ZHANG
  • Publication number: 20220239598
    Abstract: A distributed sender driven Admission Control System (ACS) is described herein, leveraging Weighted-Fair Quality of Service (QoS) queues, found in standard NICs and switches, to guarantee RPC level latency service level objectives (SLOs) by a judicious selection of QoS weights and traffic-mix across QoS queues. ACS installs cluster-wide RPC latency SLOs by mapping LS RPCs to higher weight QoS queues, and coping with overloads by adaptively apportioning LS RPCs amongst QoS queues based on measured completion times for each queue. When the network demand spikes unexpectedly to predetermined threshold percentage of provisioned capacity, ACS achieves a latency SLO that is significantly lower than the state-of-art congestion control at the 99.9th-p and admits significantly more RPCs meeting SLO target when RPC sizes are not aligned with priorities.
    Type: Application
    Filed: January 20, 2022
    Publication date: July 28, 2022
    Inventors: Gautam Kumar, Yiwen Zhang, Nandita Dukkipati, Xian Wu, Amin Vahdat
  • Patent number: 11373523
    Abstract: A method for vehicle detection based on single-axis geomagnetic sensor is disclosed. The method includes the following: arranging two geomagnetic sensors in tandem at a fixed distance in the same lane, and acquiring, by the two geomagnetic sensors, data when a vehicle passes by; performing data cleansing and denoising on the data acquired by the geomagnetic sensors; detecting, by the geomagnetic sensors, the vehicle by using an state machine algorithm based on a fixed threshold, and extracting moments when the vehicle enters and leaves detection ranges of the sensors; and collecting statistics on traffic flow in a predetermined period of time, and calculating the velocity and length of the vehicle. The presently disclosed method and apparatus can be independently used to obtain vehicle parameters at important traffic sections or intersections, or can be used in combination with other traffic detection devices to obtain more comprehensive traffic information.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: June 28, 2022
    Assignee: Nanjing University of Science and Technology
    Inventors: Yong Qi, Xian Lv, PengZhen Du, WeiBin Zhang
  • Patent number: 11203742
    Abstract: The disclosure relates to a sucrose phosphorylase mutant with improved enzyme activity, and construction method thereof and use thereof, and belongs to the technical field of genetic engineering. The amino acid sequence of the mutant of the disclosure is as shown in SEQ ID NO: 1. The mutant of the disclosure is based on sucrose phosphorylase derived from Leuconostoc mesenteroides, and subjected to site-directed mutagenesis to improve the enzyme activity of sucrose phosphorylase. The mutant is expressed in Corynebacterium glutamicum and used as a whole cell catalyst to produce 2-O-?-D-glycerol glucoside. At a 5 L fermentation tank level, a large quantity of 2-O-?-D-glycerol glucoside can be produced efficiently in a short time, which is conducive to expanding the prospect of industrial application of sucrose phosphorylase for the production of 2-O-?-D-glycerol glucoside and realizing its large-scale industrial application.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: December 21, 2021
    Assignee: Jiangnan University
    Inventors: Zhiming Rao, Peifeng Duan, Jianing Zhang, Xian Zhang, Taowei Yang, Meijuan Xu, Minglong Shao, Yu Liu, Ziwei Wang, Yan Chen, Qi Chen
  • Publication number: 20210385819
    Abstract: Methods for determining a self-driving technology-based resource and communications are provided. One example method includes that a server determines a first time-frequency resource and a first location of the first vehicle; determines a first area range in which the first vehicle is located; when a second vehicle exists in the first area range, and a second time-frequency resource of the second vehicle is the same as the first time-frequency resource, determines, from time-frequency resources in the first area range, a third time-frequency resource including an idle time-frequency resource; and the server sends the third time-frequency resource to the first vehicle, and the first vehicle performs laser signal transmission by using the third time-frequency resource.
    Type: Application
    Filed: August 20, 2021
    Publication date: December 9, 2021
    Inventors: Pin JIANG, Yujia LI, Xian ZHANG
  • Patent number: 11098287
    Abstract: The disclosure discloses 17?-hydroxysteroid dehydrogenase mutants and application thereof, and belongs to the technical field of biology. The disclosure provides 17?-hydroxysteroid dehydrogenase mutants V107A, T155N, H164Y and V107A/T155N/H164Y with high specific enzyme activities, and the specific enzyme activities of the 17?-hydroxysteroid dehydrogenase mutants V107A, T155N, H164Y and V107A/T155N/H164Y are as high as 1.85, 1.93, 2.06 and 5.15 U/mg, respectively, which are 1.11, 1.16, 1.24 and 3.10 times larger than that of wild-type 17?-hydroxysteroid dehydrogenase (1.66 U/mg).
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: August 24, 2021
    Assignee: JIANGNAN UNIVERSITY
    Inventors: Zhiming Rao, Minglong Shao, Yetong Wang, Yuling Wu, Taowei Yang, Xian Zhang, Meijuan Xu
  • Patent number: 11060076
    Abstract: The present invention discloses a method for producing a 1,2-amino alcohol compound by utilizing whole-cell transformation, and belongs to the technical field of gene engineering and microorganism engineering. According to the present invention, engineered Escherichia coli co-expresses epoxide hydrolase, alcohol dehydrogenase, ?-transaminase and glutamate dehydrogenase, is capable of realizing whole-cell catalysis of an epoxide in one step to synthesize a 1,2-amino alcohol compound, and meanwhile, can realize regeneration of coenzyme NADP+ and an amino doner L-Glu; alcohol dehydrogenase expressed by the engineered Escherichia coli is RBS optimized alcohol dehydrogenase, and such RBS optimization can control the expression quantity of alcohol dehydrogenase, so that the catalysis rate of alcohol dehydrogenase and transaminase can achieve an optimum ratio, to eliminate influence caused by a rate-limiting step in a catalyzing course.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: July 13, 2021
    Assignee: JIANGNAN UNIVERSITY
    Inventors: Zhiming Rao, Song Liu, Renjie Gao, Xian Zhang, Taowei Yang, Meijuan Xu
  • Publication number: 20210156695
    Abstract: Systems and methods for navigating a user to a destination are provided. An exemplary indoor navigation method uses a terminal device. The method includes capturing, by the terminal device, image data of an indoor scene, and determining a current position of the user based on the captured image data. The method also includes determining a navigation path and a navigation sign for navigating the user from the current position to the destination, and rendering, by the terminal device, a three-dimensional representation of the indoor scene with the navigation sign placed therein based on the image data and the navigation path. The navigation sign signals the navigation path in the three-dimensional representation. The method further includes displaying, on the terminal device, the three-dimensional representation to the user.
    Type: Application
    Filed: February 5, 2021
    Publication date: May 27, 2021
    Applicant: BEIJING DIDI INFINITY TECHNOLOGY AND DEVELOPMENT CO., LTD.
    Inventors: Jun Zhang, Bin Xu, Ronghao Li, Xiaoqiang Teng, Chao Liu, Chong Deng, Gengxin Gu, Huanqing Zhou, Qi Zhou, Yue Liu, Pengfei Xu, Runbo Hu, Hongxia Zhang, Yingfeng Zhang, Guanghui Zhao, Bin Du, Hua Chai, Xian Zhang
  • Patent number: 11001825
    Abstract: The present disclosure discloses a thermophilic L-asparaginase mutant and screening and fermentation methods thereof, and belongs to the field of gene engineering, enzyme engineering and fermentation engineering. In Bacillus subtilis 168, a Pyrococcus yayanosii CH1-derived L-asparaginase encoding gene is used as a template, and a mutation library is constructed by an error-prone PCR (epPCR) technology. A mutant strain with improved specific enzyme activity is screened through a high-flux screening method of synchronous cell disruption and enzyme activity measurement. Mutated residues included in a positive mutant are analyzed to construct a composite mutant strain S17G/A90S/R156S/K272A with improved specific enzyme activity and specific enzyme activity of 3108 U/mg. An expression quantity of the composite mutant strain in the Bacillus subtilis 168 is increased through measures of a strong promoter P43 and RBS optimization.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: May 11, 2021
    Assignee: Jiangnan University
    Inventors: Zhiming Rao, Xu Li, Xian Zhang, Shuqin Xu, Jingyi Hu, Meijuan Xu, Taowei Yang
  • Patent number: 11001871
    Abstract: The present disclosure discloses a method for producing 9?-hydroxy androstane-4-alkene-3,17-diketone by enzymatic conversion, and belongs to the fields of gene engineering and enzyme engineering. According to the present disclosure, oxidation subunit KshA, reduction subunit KshB and unknown active subunit KshC of 3-ketosteroid-9?-hydroxylase sourcing from Mycobacterium sp. Strain VKM Ac-1817D are successfully expressed in E. coli BL21, and KshC is identified as an oxidation subunit, the enzyme activity of which is far higher than that of KshA. BL21/pET-28a(+)-fdh constructed in the laboratory is used for expressing formate dehydrogenase (FDH), and by using crude enzyme liquid of KSH (KshB+KshC) and FDH engineering bacteria as a biocatalyst and a steroidal compound (AD) as a substrate, optimum reaction temperature is determined as 30° C. and optimum pH is determined as 7.0. In optimum conditions, AD is converted to produce a product 9-OH-AD, and within 20 hours, the output of 9-OH-AD is 4.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: May 11, 2021
    Assignee: Jiangnan University
    Inventors: Zhiming Rao, Zongyan Sha, Xian Zhang, Taowei Yang, Meijuan Xu
  • Publication number: 20210130797
    Abstract: The disclosure relates to a sucrose phosphorylase mutant with improved enzyme activity, and construction method thereof and use thereof, and belongs to the technical field of genetic engineering. The amino acid sequence of the mutant of the disclosure is as shown in SEQ ID NO: 1. The mutant of the disclosure is based on sucrose phosphorylase derived from Leuconostoc mesenteroides, and subjected to site-directed mutagenesis to improve the enzyme activity of sucrose phosphorylase. The mutant is expressed in Corynebacterium glutamicum and used as a whole cell catalyst to produce 2-O-?-D-glycerol glucoside. At a 5L fermentation tank level, a large quantity of 2-O-?-D-glycerol glucoside can be produced efficiently in a short time, which is conducive to expanding the prospect of industrial application of sucrose phosphorylase for the production of 2-O-?-D-glycerol glucoside and realizing its large-scale industrial application.
    Type: Application
    Filed: June 8, 2020
    Publication date: May 6, 2021
    Inventors: Zhiming Rao, Peifeng Duan, Jianing Zhang, Xian Zhang, Taowei Yang, Meijuan Xu, Minglong Shao, Yu Liu, Ziwei Wang, Yan Chen, Qi Chen