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  1. Article ; Online: Simultaneous removal of urea nitrogen and inorganic nitrogen from high-salinity wastewater by Halomonas sp. H36

    Li, Yujing / Zhang, Linghua / Liu, Weifeng / Zhou, Zepeng

    Environ Sci Pollut Res. 2023 Jan., v. 30, no. 2 p.2544-2554

    2023  

    Abstract: To treat high-salt urea wastewater by microbial hydrolysis, it is necessary to overcome the dual problems of incomplete removal of nitrogen (N) from mixed strains and inhibition of microbial activity by high salt (NaCl) concentrations. In this paper, the ...

    Abstract To treat high-salt urea wastewater by microbial hydrolysis, it is necessary to overcome the dual problems of incomplete removal of nitrogen (N) from mixed strains and inhibition of microbial activity by high salt (NaCl) concentrations. In this paper, the mechanism of NaCl tolerance of Halomonas sp. H36 was investigated. Using molecular biology and enzymatic methods, it was proven that the strain’s N-removal enzymes (urease; ammonia monooxygenase, AMO; nitrite reductase, NIR; nitrate reductase, NAR) played a key role in the removal of N, and the N-removal pathway was clarified. For the strain used to treat simulated ship domestic sewage, the urea nitrogen (CO(NH₂)₂-N)-removal rate was 88.52%, the ammonia nitrogen (NH₄⁺-N)-removal rate was 91.16%, the total nitrogen (TN)-removal rate was 90.25%, and nitrite nitrogen (NO₂⁻-N) and nitrate nitrogen (NO₃⁻-N) did not accumulate. It was proven for the first time that Halomonas sp. H36 has the function of simultaneous urea hydrolysis-nitrification–denitrification with urea as the initial substrate and can simultaneously remove urea nitrogen and inorganic nitrogen from high-salt urea wastewater.
    Keywords Halomonas ; ammonia monooxygenase ; ammonium nitrogen ; hydrolysis ; microbial activity ; molecular biology ; nitrate nitrogen ; nitrate reductase ; nitrite nitrogen ; nitrite reductase ; nitrogen ; salt tolerance ; sewage ; total nitrogen ; urea ; urea nitrogen ; urease ; wastewater
    Language English
    Dates of publication 2023-01
    Size p. 2544-2554.
    Publishing place Springer Berlin Heidelberg
    Document type Article ; Online
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-022-22018-8
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    In stock of ZB MED Bonn / Germany

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  2. Article ; Online: Simultaneous removal of urea nitrogen and inorganic nitrogen from high-salinity wastewater by Halomonas sp. H36.

    Li, Yujing / Zhang, Linghua / Liu, Weifeng / Zhou, Zepeng

    Environmental science and pollution research international

    2022  Volume 30, Issue 2, Page(s) 2544–2554

    Abstract: To treat high-salt urea wastewater by microbial hydrolysis, it is necessary to overcome the dual problems of incomplete removal of nitrogen (N) from mixed strains and inhibition of microbial activity by high salt (NaCl) concentrations. In this paper, the ...

    Abstract To treat high-salt urea wastewater by microbial hydrolysis, it is necessary to overcome the dual problems of incomplete removal of nitrogen (N) from mixed strains and inhibition of microbial activity by high salt (NaCl) concentrations. In this paper, the mechanism of NaCl tolerance of Halomonas sp. H36 was investigated. Using molecular biology and enzymatic methods, it was proven that the strain's N-removal enzymes (urease; ammonia monooxygenase, AMO; nitrite reductase, NIR; nitrate reductase, NAR) played a key role in the removal of N, and the N-removal pathway was clarified. For the strain used to treat simulated ship domestic sewage, the urea nitrogen (CO(NH
    MeSH term(s) Wastewater ; Denitrification ; Halomonas ; Nitrogen/metabolism ; Sodium Chloride/metabolism ; Salinity ; Heterotrophic Processes ; Nitrification ; Bioreactors
    Chemical Substances Wastewater ; Nitrogen (N762921K75) ; Sodium Chloride (451W47IQ8X)
    Language English
    Publishing date 2022-08-06
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-022-22018-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  3. Article ; Online: An interval-estimation-based anti-disturbance sliding mode control strategy for rigid satellite with prescribed performance.

    Zhou, Zepeng / Zhu, Fanglai / Xu, Dezhi / Gao, Zhifeng

    ISA transactions

    2020  Volume 105, Page(s) 63–76

    Abstract: This paper investigates an anti-disturbance sliding mode control strategy for a rigid satellite system with external disturbance under the prescribed performance constraints. An interval observer is firstly introduced to generate the interval estimation ... ...

    Abstract This paper investigates an anti-disturbance sliding mode control strategy for a rigid satellite system with external disturbance under the prescribed performance constraints. An interval observer is firstly introduced to generate the interval estimation of the attitude angular velocity. Then a finite time identical disturbance reconstruction strategy is developed by using the interval estimation. Based on the novel performance function and error transformation constraints, the attitude tracking error is converted into a new error system that guarantees the desired transient and steady-state responses for the tracking error. Then, by introducing the reconstructed disturbance, a finite time anti-disturbance controller is constructed with the backstepping method. The stability of the strategy is guaranteed by the Lyapunov stability method. Finally, simulation results demonstrate the effectiveness of the proposed approach.
    Language English
    Publishing date 2020-06-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2012746-7
    ISSN 1879-2022 ; 0019-0578
    ISSN (online) 1879-2022
    ISSN 0019-0578
    DOI 10.1016/j.isatra.2020.05.048
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Advances in Simple, Rapid, and Contamination-Free Instantaneous Nucleic Acid Devices for Pathogen Detection.

    Wang, Yue / Wang, Chengming / Zhou, Zepeng / Si, Jiajia / Li, Song / Zeng, Yezhan / Deng, Yan / Chen, Zhu

    Biosensors

    2023  Volume 13, Issue 7

    Abstract: Pathogenic pathogens invade the human body through various pathways, causing damage to host cells, tissues, and their functions, ultimately leading to the development of diseases and posing a threat to human health. The rapid and accurate detection of ... ...

    Abstract Pathogenic pathogens invade the human body through various pathways, causing damage to host cells, tissues, and their functions, ultimately leading to the development of diseases and posing a threat to human health. The rapid and accurate detection of pathogenic pathogens in humans is crucial and pressing. Nucleic acid detection offers advantages such as higher sensitivity, accuracy, and specificity compared to antibody and antigen detection methods. However, conventional nucleic acid testing is time-consuming, labor-intensive, and requires sophisticated equipment and specialized medical personnel. Therefore, this review focuses on advanced nucleic acid testing systems that aim to address the issues of testing time, portability, degree of automation, and cross-contamination. These systems include extraction-free rapid nucleic acid testing, fully automated extraction, amplification, and detection, as well as fully enclosed testing and commercial nucleic acid testing equipment. Additionally, the biochemical methods used for extraction, amplification, and detection in nucleic acid testing are briefly described. We hope that this review will inspire further research and the development of more suitable extraction-free reagents and fully automated testing devices for rapid, point-of-care diagnostics.
    MeSH term(s) Humans ; Nucleic Acids ; Nucleic Acid Amplification Techniques/methods ; Point-of-Care Systems
    Chemical Substances Nucleic Acids
    Language English
    Publishing date 2023-07-14
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2662125-3
    ISSN 2079-6374 ; 2079-6374
    ISSN (online) 2079-6374
    ISSN 2079-6374
    DOI 10.3390/bios13070732
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  5. Article ; Online: Distributed fault detection and estimation in cyber-physical systems subject to actuator faults.

    Xu, Dezhi / Zhu, Fanglai / Zhou, Zepeng / Yan, Xinggang

    ISA transactions

    2019  Volume 104, Page(s) 162–174

    Abstract: The fault detection and estimation problems for the physical layer network in the cyber-physical systems with unknown external disturbances are investigated in this study. Both bias fault and loss of efficiency scenarios are considered for the actuators. ...

    Abstract The fault detection and estimation problems for the physical layer network in the cyber-physical systems with unknown external disturbances are investigated in this study. Both bias fault and loss of efficiency scenarios are considered for the actuators. Based on the adaptive threshold method and sliding mode observer approach, a distributed fault detection observer (DFDO) is constructed for each physical layer node to detect the occurrence of actuator faults. Then a relative global estimation error system is defined for the distributed fault estimation observer (DFEO). Compared with the existing results, the proposed DFEO can provide the estimation for not only the actuator bias faults but also the actuators' efficiency factors under the impact of exogenous disturbance with two gain dynamic update processes. Finally, the feasibility and effectiveness of the given DFDO and the DFEO are examined by Lyapunov stability method and the simulation results.
    Language English
    Publishing date 2019-12-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2012746-7
    ISSN 1879-2022 ; 0019-0578
    ISSN (online) 1879-2022
    ISSN 0019-0578
    DOI 10.1016/j.isatra.2019.12.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Flexible Liquid Crystal Polymer Technologies from Microwave to Terahertz Frequencies.

    Zhou, Zepeng / Li, Wenqing / Qian, Jun / Liu, Weihong / Wang, Yiming / Zhang, Xijian / Guo, Qinglei / Yashchyshyn, Yevhen / Wang, Qingpu / Shi, Yanpeng / Zhang, Yifei

    Molecules (Basel, Switzerland)

    2022  Volume 27, Issue 4

    Abstract: With the emergence of fifth-generation (5G) cellular networks, millimeter-wave (mmW) and terahertz (THz) frequencies have attracted ever-growing interest for advanced wireless applications. The traditional printed circuit board materials have become ... ...

    Abstract With the emergence of fifth-generation (5G) cellular networks, millimeter-wave (mmW) and terahertz (THz) frequencies have attracted ever-growing interest for advanced wireless applications. The traditional printed circuit board materials have become uncompetitive at such high frequencies due to their high dielectric loss and large water absorption rates. As a promising high-frequency alternative, liquid crystal polymers (LCPs) have been widely investigated for use in circuit devices, chip integration, and module packaging over the last decade due to their low loss tangent up to 1.8 THz and good hermeticity. The previous review articles have summarized the chemical properties of LCP films, flexible LCP antennas, and LCP-based antenna-in-package and system-in-package technologies for 5G applications, although these articles did not discuss synthetic LCP technologies. In addition to wireless applications, the attractive mechanical, chemical, and thermal properties of LCP films enable interesting applications in micro-electro-mechanical systems (MEMS), biomedical electronics, and microfluidics, which have not been summarized to date. Here, a comprehensive review of flexible LCP technologies covering electric circuits, antennas, integration and packaging technologies, front-end modules, MEMS, biomedical devices, and microfluidics from microwave to THz frequencies is presented for the first time, which gives a broad introduction for those outside or just entering the field and provides perspective and breadth for those who are well established in the field.
    Language English
    Publishing date 2022-02-16
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules27041336
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