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    Wyświetlanie 1-4 z 4
    Tytuł:
    Application of a ring coupled double-Duffing oscillator to a scheme for identifying the coulter signal with a low SNR
    Autorzy:
    Zhao, Zhijie
    Liu, Runcong
    Wang, Xiaodong
    Powiązania:
    https://bibliotekanauki.pl/articles/2200898.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    simulated Coulter signal
    pulsed signal identification
    ring coupled double-Duffing oscillator
    chaotic-transient synchronous mutation
    continuous synchronous mutation
    Opis:
    In order to use chaotic oscillators to identify Coulter signals with a low SNR (SNR⩽0), a Gaussian pulse signal is used to simulate the Coulter signal, and we study the continuous synchronous mutation (CSM) phenomenon of a chaotic ring coupled double-Duffing (RCDD) oscillator to identify the signals. The maximum difference between the two state variables in the oscillator can be used to determine the anti-noise ability of the oscillator and construct a function to identify pulse amplitudes. A Simulink model is constructed to verify that the proposed method can be used to identify pulse amplitudes with a low SNR, which provides an approach for developing a technology of measuring Coulter signals with the low SNR.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2023, 61, 2; 379--393
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Consensus Committee of experts on Kawasaki Disease and Chinese Journal of Contemporary Pediatrics – the expert consensuses on intravenous immunoglobulin, aspirin, and glucocorticoid
    Autorzy:
    Shuying, Ren
    Fangming, Deng
    Zhongdong, Du
    Xiaodong, Yang
    Lijian, Xie
    Hong, Wang
    Fuyong, Jiao
    Powiązania:
    https://bibliotekanauki.pl/articles/40519598.pdf
    Data publikacji:
    2024-03-30
    Wydawca:
    Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
    Tematy:
    aspirin
    children
    glucocorticoid
    intravenous immunoglobulin
    Kawasaki disease
    Opis:
    Introduction and aim. Kawasaki disease (KD) is an acute vasculitis with unknown etiology, usually occurring in children under 5 years old. This article will summarize the three consensuses formulated in China about KD. Material and methods. English databases for consensus search include UpToDate, BMJ Clinical Evidence, National Guideline Clearinghouse, Joanna Briggs Institute Library, Cochrane Library, and PubMed, etc.; Chinese databases include China Biomedical Literature Service, China Knowledge Network, Wanfang database, etc. All literature searches ended on February 28, 2022. Analysis of the literature. KD is a common acquired heart disease in children and can lead to severe complications such as coronary injury. However, intravenous immunoglobulin (IVIG) combined with oral aspirin (Asp) is currently recognized as the most effective treatment in KD acute stage and the first-line treatment to prevent cardiovascular complications. Glucocorticoid (GC) is mainly used for KD patients with a high risk of coronary artery aneurysm (CAA), no immunoglobulin response, and confirmed CAA. There are already consensus guidelines on diagnosing and treating KD in different countries. This article summarizes the relevant expert consensus on aspirin, glucocorticoids and IVIG for the treatment of Kawasaki disease in China. Conclusion. Still, there are inconsistent opinions in the literature on the mechanism, optimal timing, and dosage of medication for KD.
    Źródło:
    European Journal of Clinical and Experimental Medicine; 2024, 22, 1; 179-187
    2544-2406
    2544-1361
    Pojawia się w:
    European Journal of Clinical and Experimental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Separation and physicochemical properties of residual carbon in gasification slag
    Autorzy:
    Fan, Xiaoting
    Fan, Panpan
    Liu, Xiaodong
    Ren, Zhenyang
    Bao, Weiren
    Wang, Jiancheng
    Dong, Lianping
    Fan, Minqiang
    Powiązania:
    https://bibliotekanauki.pl/articles/2175447.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    waste treatment
    gasification slag
    physical properties
    chemical properties
    structural features
    reaction kinetics
    Opis:
    Gasification slag is the solid waste produced in the coal gasification process, and its treatment and disposal problems are becoming more and more serious. In this study, the gasification slag produced in a chemical base in northern China and its residual carbon obtained by gravity separation of water medium were taken as the research objects, and their physicochemical properties were analyzed comprehensively. The residual carbon products, ash-rich products and high-ash products were obtained from the gasification slag after gravity separation. Under the optimal structure, the ignition loss of residual carbon products was reduced from 79.80% to 16.84%, and the yield was 11.64%. The high content of amorphous carbon and developed pores in the residual carbon provide the possibility of manufacturing high value-added materials. Raman spectrum showed that the residual carbon had lower aromaticity, higher content of small and medium aromatic ring structures, lower structural stability and easier combustion. Thermogravimetric combustion kinetics showed that the average combustion rate of residual carbon was 0.325(dm/dt)mean/%•min−1, the comprehensive combustion characteristic index was 1.41•10−9%2•min−2•°C−3. It has excellent performance and can be used as a raw material for mixed combustion in a circulating fluidized bed. The analysis of physical and chemical properties of residual carbon is of great significance for follow-up exploration of the resource utilization and high-value utilization of the residual carbon.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2022, 58, 6; art. no. 154928
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on peripheral clamping of large-aperture laser transport mirror
    Autorzy:
    Cao, Tingfen
    Liu, Bowu
    Wang, Hui
    Ni, Wei
    Zhang, Jinli
    Chen, Xiaojuan
    Li, Yingang
    Zhou, Hai
    Jiang, Xiaodong
    Hu, Dongxia
    Zhu, Qihua
    Powiązania:
    https://bibliotekanauki.pl/articles/27310087.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    transport mirror
    peripheral clamping
    surface distortion
    assembly structure
    Opis:
    This article introduces the study of peripheral clamping for large-aperture laser mirrors in high power laser facilities. Some multi-point clamping schemes were experimentally tested, the results of the experiments show that these schemes cannot meet the technical requirements, and in the simulation analysis, we explain the reason for this phenomenon. It is concluded that the additional bending moment caused by the non-ideal process factors in the multi-point clamping is the main cause for the surface distortion. Based on the above conclusions, we carried out research on minor-point clamping. Experimental verification of the minor-point clamping were done, the results show that the minor-point clamping can meet the requirements of technical indicators in whole process. This work can provide a reference for the design of the large-aperture transport mirror clamping structure, which may be used in huge laser devices and telescopes.
    Źródło:
    Optica Applicata; 2023, 53, 2; 227--238
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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