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  1. Article ; Online: Virtual coupling of permanent magnetic maglev trains

    Zhenyu Guo / Zhongqi Li

    IET Intelligent Transport Systems, Vol 17, Iss 12, Pp 2505-

    An improved cooperative tracking and collision avoidance control protocol

    2023  Volume 2518

    Abstract: Abstract In the cooperative tracking task of multiple permanent magnetic maglev trains, system uncertainty, external disturbances, and collision avoidance control are issues that must be considered. Therefore, the cooperative tracking and collision ... ...

    Abstract Abstract In the cooperative tracking task of multiple permanent magnetic maglev trains, system uncertainty, external disturbances, and collision avoidance control are issues that must be considered. Therefore, the cooperative tracking and collision avoidance control for train virtual coupling with external disturbances are studied. First, according to the idea of multi‐agent consensus control and active disturbance rejection control, a cooperative tracking controller based on a novel nonlinear extended state observer (NESO) is designed. Second, a collision avoidance control method based on an improved artificial potential field (APF) is designed. Finally, an improved cooperative tracking and collision avoidance control protocol is proposed, and the stability proof is given. Compared with the conventional protocol, the proposed protocol can achieve smooth coupling and high‐precision cruise while ensuring safe collision avoidance. It has the advantages of higher tracking accuracy and stronger anti‐interference performance.
    Keywords collision avoidance ; distributed control ; interference suppression ; rail traffic control ; active disturbance rejection control ; artificial potential field ; Transportation engineering ; TA1001-1280 ; Electronic computers. Computer science ; QA75.5-76.95
    Subject code 629
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher Wiley
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article: A Deep Learning Model Combining Multimodal Factors to Predict the Overall Survival of Transarterial Chemoembolization.

    Sun, Zhongqi / Li, Xin / Liang, Hongwei / Shi, Zhongxing / Ren, Hongjia

    Journal of hepatocellular carcinoma

    2024  Volume 11, Page(s) 385–397

    Abstract: Background: To develop and validate an overall survival (OS) prediction model for transarterial chemoembolization (TACE).: Methods: In this retrospective study, 301 patients with hepatocellular carcinoma (HCC) who received TACE from 2012 to 2015 were ...

    Abstract Background: To develop and validate an overall survival (OS) prediction model for transarterial chemoembolization (TACE).
    Methods: In this retrospective study, 301 patients with hepatocellular carcinoma (HCC) who received TACE from 2012 to 2015 were collected. The residual network was used to extract prognostic information from CT images, which was then combined with the clinical factors adjusted by COX regression to predict survival using a modified deep learning model (DLOP
    Results: In the validation cohort, DLOP
    Conclusion: The deep learning model can effectively predict the patients' overall survival of TACE.
    Language English
    Publishing date 2024-02-26
    Publishing country New Zealand
    Document type Journal Article
    ZDB-ID 2780784-8
    ISSN 2253-5969
    ISSN 2253-5969
    DOI 10.2147/JHC.S443660
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  3. Article ; Online: Coupling coefficient calculation and optimization of positive rectangular series coils in wireless power transfer systems

    Yang Leng / Derong Luo / Zhongqi Li / Fei Yu

    Heliyon, Vol 9, Iss 10, Pp e21121- (2023)

    2023  

    Abstract: In wireless power transfer (WPT) systems using magnetic coupling resonance, when there is a registration deviation between the transmitting and receiving coils, there will be significant fluctuations in the coupling coefficient, output power, and ... ...

    Abstract In wireless power transfer (WPT) systems using magnetic coupling resonance, when there is a registration deviation between the transmitting and receiving coils, there will be significant fluctuations in the coupling coefficient, output power, and transmission efficiency, which will seriously affect the stability of the WPT system. The coupling coefficient is related to the length and width of the rectangular coil, number of turns, mutual geometric position, and space magnetic medium, making it difficult to maintain a constant value when the coil is offset. A single-emitter two-receiver positive-series rectangular coils structure and a method of calculating the structure are proposed. Then an optimization method for mutual inductance was proposed, and the structural parameters that met the design requirements were obtained using the proposed optimization method. The calculation formula for coupling coefficient was verified through simulation and experiments. The results showed that when the offset distance of the receiving coil along the Y-axis (driving direction) and X-axis reaches half of the length of the transmitting coil and 10 cm, the coupling coefficient, transmission efficiency, and output power remain almost unchanged.
    Keywords Wireless power transfer (WPT) ; Coupling coefficient ; Coil misalignment ; Positive series ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
    Subject code 600 ; 535
    Language English
    Publishing date 2023-10-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
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  4. Article ; Online: Distributed Cooperative Tracking Control Strategy for Virtual Coupling Trains

    Zhongqi Li / Lingyu Zhong / Hui Yang / Liang Zhou

    Processes, Vol 11, Iss 12, p

    An Event-Triggered Model Predictive Control Approach

    2023  Volume 3293

    Abstract: Virtual coupling (VC) technology has received much attention because of its significant advantages in enhancing the railway transport capacity; it achieves efficient train coupling operation through advanced communication technology. However, due to the ... ...

    Abstract Virtual coupling (VC) technology has received much attention because of its significant advantages in enhancing the railway transport capacity; it achieves efficient train coupling operation through advanced communication technology. However, due to the uncertainty of the operating environment, a stable and effective control system is the key enabler for realization. In this paper, an event-triggered distributed model predictive control (ET-DMPC) method is proposed for the cooperative tracking control of virtual coupling trains (VCTS), considering resource limitations and multiple constraints. Firstly, a distributed model predictive control (DMPC) framework is designed. Based on the established VCTS dynamics model of the dual-leader communication topology, a distributed optimization objective function and safety constraints containing state information of the neighboring train system are constructed. Secondly, due to the limitations of communication and computational resources, the event triggering (ET) mechanism is further introduced, and an ET-DMPC method suitable for VCTS is proposed. The trigger condition of each unit train is designed on the premise of guaranteeing system stability, under which the system can guarantee the input-state stability (ISS), and the recursive feasibility of the system is proven via theoretical analysis. Finally, the VCTS composed of four CRH380A unit trains is used as the control object for simulation experiments, and through two sets of experimental simulation analysis, the effectiveness of the proposed method is verified.
    Keywords virtual coupling train ; dual leader topology ; collaborative tracking ; distributed model predictive control ; event trigger conditions ; stability ; Chemical technology ; TP1-1185 ; Chemistry ; QD1-999
    Subject code 629
    Language English
    Publishing date 2023-11-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article: Melatonin Modulates Tomato Root Morphology by Regulating Key Genes and Endogenous Hormones.

    Tian, Qiang / Wang, Guangzheng / Dou, Jianhua / Niu, Yu / Li, Ruirui / An, Wangwang / Tang, Zhongqi / Yu, Jihua

    Plants (Basel, Switzerland)

    2024  Volume 13, Issue 3

    Abstract: Melatonin plays a vital role in plant growth and development. In this study, we treated hydroponically grown tomato roots with various concentrations of exogenous melatonin (0, 10, 30, and 50 μmol· ... ...

    Abstract Melatonin plays a vital role in plant growth and development. In this study, we treated hydroponically grown tomato roots with various concentrations of exogenous melatonin (0, 10, 30, and 50 μmol·L
    Language English
    Publishing date 2024-01-27
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704341-1
    ISSN 2223-7747
    ISSN 2223-7747
    DOI 10.3390/plants13030383
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  6. Article ; Online: Microalgae as future food: Rich nutrients, safety, production costs and environmental effects.

    Gao, Le / Qin, Yujia / Zhou, Xu / Jin, Wenbiao / He, Zhongqi / Li, Xuan / Wang, Qilin

    The Science of the total environment

    2024  Volume 927, Page(s) 172167

    Abstract: The improvement of food security and nutrition has attracted wide attention, and microalgae as the most promising food source are being further explored. This paper comprehensively introduces basic and functional nutrients rich in microalgae by ... ...

    Abstract The improvement of food security and nutrition has attracted wide attention, and microalgae as the most promising food source are being further explored. This paper comprehensively introduces basic and functional nutrients rich in microalgae by elaborated tables incorporating a wide variety of studies and summarizes factors influencing their accumulation effects. Subsequently, multiple comparisons of nutrients were conducted, indicating that microalgae have a high protein content. Moreover, controllable production costs and environmental friendliness prompt microalgae into the list that contains more promising and reliable future food. However, microalgae and -based foods approved and sold are limited strictly, showing that safety is a key factor affecting dietary consideration. Notably, sensory profiles and ingredient clarity play an important role in improving the acceptance of microalgae-based foods. Finally, based on the bottleneck in the microalgae food industry, suggestions for its future development were discussed.
    MeSH term(s) Microalgae ; Food Safety ; Nutrients/analysis ; Nutritive Value
    Language English
    Publishing date 2024-04-04
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.172167
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
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  7. Article: Coupling coefficient calculation and optimization of positive rectangular series coils in wireless power transfer systems.

    Leng, Yang / Luo, Derong / Li, Zhongqi / Yu, Fei

    Heliyon

    2023  Volume 9, Issue 10, Page(s) e21121

    Abstract: In wireless power transfer (WPT) systems using magnetic coupling resonance, when there is a registration deviation between the transmitting and receiving coils, there will be significant fluctuations in the coupling coefficient, output power, and ... ...

    Abstract In wireless power transfer (WPT) systems using magnetic coupling resonance, when there is a registration deviation between the transmitting and receiving coils, there will be significant fluctuations in the coupling coefficient, output power, and transmission efficiency, which will seriously affect the stability of the WPT system. The coupling coefficient is related to the length and width of the rectangular coil, number of turns, mutual geometric position, and space magnetic medium, making it difficult to maintain a constant value when the coil is offset. A single-emitter two-receiver positive-series rectangular coils structure and a method of calculating the structure are proposed. Then an optimization method for mutual inductance was proposed, and the structural parameters that met the design requirements were obtained using the proposed optimization method. The calculation formula for coupling coefficient was verified through simulation and experiments. The results showed that when the offset distance of the receiving coil along the
    Language English
    Publishing date 2023-10-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e21121
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  8. Article ; Online: Alcohol degradation, learning, and memory-enhancing effect of Acetobacter pasteurianus BP2201 in Caenorhabditis elegans model.

    Wen, Xin / Yang, Huazhong / Li, Zhongqi / Chu, Weihua

    Journal of applied microbiology

    2023  Volume 134, Issue 11

    Abstract: Aims: This study aimed to investigate the probiotic effects of Acetobacter pasteurianus BP2201, isolated from brewing mass, for the treatment of alcohol-induced learning and memory ability impairments in a Caenorhabditis elegans model.: Methods and ... ...

    Abstract Aims: This study aimed to investigate the probiotic effects of Acetobacter pasteurianus BP2201, isolated from brewing mass, for the treatment of alcohol-induced learning and memory ability impairments in a Caenorhabditis elegans model.
    Methods and results: Acetobacter pasteurianus BP2201 was examined for probiotic properties, including acid and bile salt resistance, ethanol degradation, antioxidant efficacy, hemolytic activity, and susceptibility to antibiotics. The strain displayed robust acid and bile salt tolerance, efficient ethanol degradation, potent antioxidant activity, and susceptibility to specific antibiotics. Additionally, in the C. elegans model, administering A. pasteurianus BP2201 significantly improved alcohol-induced learning and memory impairments.
    Conclusions: Acetobacter pasteurianus BP2201 proves to be a promising candidate strain for the treatment of learning and memory impairments induced by alcohol intake.
    MeSH term(s) Animals ; Caenorhabditis elegans ; Acetic Acid/metabolism ; Acetobacter/metabolism ; Antioxidants/metabolism ; Ethanol/metabolism ; Anti-Bacterial Agents/pharmacology
    Chemical Substances Acetic Acid (Q40Q9N063P) ; Antioxidants ; Ethanol (3K9958V90M) ; Anti-Bacterial Agents
    Language English
    Publishing date 2023-11-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 1358023-1
    ISSN 1365-2672 ; 1364-5072
    ISSN (online) 1365-2672
    ISSN 1364-5072
    DOI 10.1093/jambio/lxad253
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 259: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  9. Article ; Online: Correction: Li et al. m

    Li, Guohui / Deng, Liang / Huang, Nan / Cui, Zhongqi / Wu, Qi / Ma, Ji / Pan, Qiuhui / Sun, Fenyong

    Genes

    2023  Volume 14, Issue 8

    Abstract: In the original publication [ ... ]. ...

    Abstract In the original publication [...].
    Language English
    Publishing date 2023-08-01
    Publishing country Switzerland
    Document type Published Erratum
    ZDB-ID 2527218-4
    ISSN 2073-4425 ; 2073-4425
    ISSN (online) 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes14081575
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Predictive Model for Concentration Distribution of Explosive Dispersal

    Xing Chen / Zhongqi Wang / En Yang / Jianping Li

    ACS Omega, Vol 6, Iss 3, Pp 2085-

    2021  Volume 2099

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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