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  1. Article ; Online: Optical properties of particle dispersed coatings with gradient distribution.

    Zhai, Jinan / Zhang, Shangyu / Zheng, Chong / Liu, Linhua

    Applied optics

    2024  Volume 63, Issue 3, Page(s) 681–691

    Abstract: Particle dispersed coatings with gradient distributions, resulting from either gravity or artificial control, are frequently encountered in practical applications. However, most current studies investigating the optical properties of coatings use the ... ...

    Abstract Particle dispersed coatings with gradient distributions, resulting from either gravity or artificial control, are frequently encountered in practical applications. However, most current studies investigating the optical properties of coatings use the uniform model (uniform single layer assumption), overlooking the gradient distribution effects. Given the pervasiveness of gradient distributions and the widespread use of the uniform model, it is imperative to evaluate applicability conditions of the uniform model in practical applications. In this work, we comprehensively investigate the quantitative performance of the uniform model in predicting the infrared optical properties of coatings with gradient distributions of particle volume fraction using the superposition T-matrix method. The results show that the gradient distribution of particle volume fraction has a limited impact on the emissivity properties of
    Language English
    Publishing date 2024-01-31
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4522
    ISSN (online) 1539-4522
    DOI 10.1364/AO.510957
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Extinction by plasmonic nanoparticles in dispersive and dissipative media.

    Zhang, Shangyu / Dong, Jian / Zhang, Wenjie / Luo, Minggang / Liu, Linhua

    Optics letters

    2023  Volume 47, Issue 21, Page(s) 5577–5580

    Abstract: Extinction of small metallic spheres has been well understood through the classical Mie theory when the host medium is dispersive and transparent. However, the role of host dissipation on the particulate extinction remains a competition between the ... ...

    Abstract Extinction of small metallic spheres has been well understood through the classical Mie theory when the host medium is dispersive and transparent. However, the role of host dissipation on the particulate extinction remains a competition between the enhancing and reducing effects on the localized surface plasmonic resonance (LSPR). Here, using a generalized Mie theory, we elaborate on the specific influence mechanisms of host dissipation on the extinction efficiency factors of a plasmonic nanosphere. To this end, we isolate the dissipative effects by comparing the dispersive and dissipative host with its dissipationless counterpart. As a result, we identify the damping effects of host dissipation on the LSPR including the resonance widening and amplitude reducing. The resonance positions are shifted by host dissipation, which cannot be predicted by the classical Fröhlich condition. Finally, we demonstrate that a wideband extinction enhancement due to host dissipation can be realized away from the positions of the LSPR.
    Language English
    Publishing date 2023-05-23
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4794
    ISSN (online) 1539-4794
    DOI 10.1364/OL.474771
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Extinction and attenuation by voids in absorbing host media.

    Zhang, Shangyu / Zhai, Jinan / Dong, Jian / Zhang, Wenjie / Liu, Linhua

    Optics express

    2023  Volume 31, Issue 20, Page(s) 32214–32226

    Abstract: Extinction and attenuation by particles in an absorbing host have suffered a long-lasting controversy, which has impeded the physical insights on the radiative transfer in the voids dispersed composite. In this paper, we outline the existing extinction ... ...

    Abstract Extinction and attenuation by particles in an absorbing host have suffered a long-lasting controversy, which has impeded the physical insights on the radiative transfer in the voids dispersed composite. In this paper, we outline the existing extinction definitions, including an equivalence theorem neglecting the host absorption, the near-field analytical definition neglecting the far-field effects, and the operational way which simulates the actual detector readings. It is shown that, under the independent scattering approximation, the generalized operational definition is equivalent to a recent effective medium method according to the rigorous theory of multiple scattering. Using this generalized extinction, we show the important influences of the host absorption on the void extinction. Specifically, at the void resonance, the extinction cross sections of the small voids can be positive, zero, and even negative, which is regulated quantitively by host absorption. Considering the voids in SiC or Ag, the intriguing properties are verified through the attenuation coefficient calculated by the Maxwell-Garnett effective medium theory. In contrast, the equivalent theorem cannot describe any void resonance structures in the absorbing media. Also, the near-field definition fails to generate negative extinction and cannot thus describe the diminished total absorption by the voids. Our results might provide a better understanding of complex scattering theory in absorbing media.
    Language English
    Publishing date 2023-10-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.500474
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Scattering of guided waves propagating through pipe bends based on normal mode expansion.

    Wu, Wenjun / Dong, Hao / Zhang, Shangyu

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 12488

    Abstract: The scattering of guided waves propagating through pipe bends is studied by means of normal mode expansion. First, the bi-orthogonality relationship for normal modes in pipe bends is derived, based on which the displacement and stress fields at the ... ...

    Abstract The scattering of guided waves propagating through pipe bends is studied by means of normal mode expansion. First, the bi-orthogonality relationship for normal modes in pipe bends is derived, based on which the displacement and stress fields at the interfaces between the straight and curved parts are expanded with the normal modes in both parts. Then, based on the displacement and stress field continuity principle, the scattering problem is regarded as an eigenproblem of a transfer matrix, the solution of which gives the mode conversions at the interfaces. A case study is presented of the low-frequency longitudinal mode incident on a pipe bend, and it is found that the dominant mode conversions are L(0,1) reflection and mode conversion from L(0,1) to F(1,1). Finite element simulations and experiments are also conducted. L(0,1) bend reflection and mode-converted F(1,1) are clearly observed, which agrees well with the theoretical predictions.
    Language English
    Publishing date 2022-07-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-16708-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Semi-online parameter identification methodology for maritime power lithium batteries

    Tang, Ruoli / Zhang, Shihan / Zhang, Shangyu / Lai, Jingang / Zhang, Yan

    Applied Energy. 2023 June, v. 339 p.120992-

    2023  

    Abstract: Due to the special working environment of power lithium battery (P-LiB) on all-electric ships, the high-efficiency battery management system (BMS) is required. In this study, a novel semi-online parameter identification methodology integrated with large- ... ...

    Abstract Due to the special working environment of power lithium battery (P-LiB) on all-electric ships, the high-efficiency battery management system (BMS) is required. In this study, a novel semi-online parameter identification methodology integrated with large-scale global optimization algorithm is developed, in order to ensure the high-quality performance of subsequent BMS functions like the equalization control and state-of-charge estimation. Firstly, the P-LiB parameter identification model is established based on the first-order Thevenin equivalent circuit. Then, the evolution strategy of identification model is developed for dynamically updating the model along with the entire charging/discharging process of P-LiB. Considering that the model complexity increases exponentially with dimensionality, the AMCCDE algorithm developed in our previous work is employed to optimize the dynamic model repeatedly. Moreover, the semi-online operation mechanism for AMCCDE is proposed, in which the multiple context vectors are used to exchange information and inherit the optimal solution between each two adjacent semi-online cycles, and the identification solutions can be dynamically corrected and output at the end of each cycle. Finally, the developed semi-online identification methodology is verified using the USTC-DST and USTC-UDDS datasets. Experimental results show that the developed methodology can well balance the identification accuracy and timeliness, and dynamically output the accurate identification solutions in real-time.
    Keywords algorithms ; data collection ; dynamic models ; energy ; evolution ; lithium ; lithium batteries ; management systems ; Parameter identification ; Semi-online identification ; Lithium battery ; Large scale global optimization ; All-electric ship
    Language English
    Dates of publication 2023-06
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 2000772-3
    ISSN 0306-2619
    ISSN 0306-2619
    DOI 10.1016/j.apenergy.2023.120992
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: A case of unexpected death due to primary angiitis of the central nervous system.

    Yang, Li / Zheng, Zhe / Zeng, Yujie / Zhang, Shangyu / Jin, Pengyue / Li, Yongguo / Li, Jianbo / Tang, Renkuan

    Forensic science, medicine, and pathology

    2023  

    Abstract: Primary angiitis of the central nervous system (PACNS) is a rare and fatal cerebral vasculitis mainly involving the arteriole of the pia mater, cerebral cortex, and spinal cord. It has an insidious onset atypical symptoms. In this paper, we reported an ... ...

    Abstract Primary angiitis of the central nervous system (PACNS) is a rare and fatal cerebral vasculitis mainly involving the arteriole of the pia mater, cerebral cortex, and spinal cord. It has an insidious onset atypical symptoms. In this paper, we reported an unexpected death due to cerebral hemorrhage caused by PACNS. According to the typical clinical manifestations (headache, dizziness, weakness of the limbs, temporary blurred vision, etc.) and pathological examination (wide degeneration and fibrinoid necrosis of blood vessel walls with inflammatory cell infiltration), as well as hematoxylin-eosin staining, immunohistochemistry for CD15 + and gram staining, we finally determined that the patient died due to cerebral vascular rupture and hemorrhage caused by PACNS. This case illustrates the value and key points of autopsy in evaluating sudden deaths.
    Language English
    Publishing date 2023-05-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2195904-3
    ISSN 1556-2891 ; 1547-769X
    ISSN (online) 1556-2891
    ISSN 1547-769X
    DOI 10.1007/s12024-023-00631-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Book ; Online: Extinction by plasmonic nanoparticles in dispersive and dissipative media

    Zhang, Shangyu / Dong, Jian / Zhang, Wenjie / Luo, Minggang / Liu, Linhua

    2022  

    Abstract: Extinction of small metallic spheres has been well understood through the classical Mie theory when the host medium is dispersive and transparent. However, the role of host dissipation on the particulate extinction remains a competition between the ... ...

    Abstract Extinction of small metallic spheres has been well understood through the classical Mie theory when the host medium is dispersive and transparent. However, the role of host dissipation on the particulate extinction remains a competition between the enhancing and reducing effects on the localized surface plasmonic resonance (LSPR). Here, using a generalized Mie theory, we elaborate on the specific influence mechanisms of host dissipation on the extinction efficiency factors of a plasmonic nanosphere. To this end, we isolate the dissipative effects by comparing the dispersive and dissipative host with its transparent counterpart. As a result, we identify the damping effects of host dissipation on the LSPR including the resonance widening and amplitude reducing. The resonance positions are shifted by host dissipation, which cannot be predicted by the classical Fr\"ohlich condition. Finally, we demonstrate that a wide-band extinction enhancement due to host dissipation can be realized away from the positions of LSPR.

    Comment: 5 pages, 3 figures
    Keywords Physics - Optics ; Condensed Matter - Materials Science ; Physics - Classical Physics
    Subject code 530 ; 535
    Publishing date 2022-09-02
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Multi-Sensor Passive Localization Using Direct Position Determination with Time-Varying Delay.

    Zhang, Shangyu / Huang, Zhen / Feng, Xuefeng / He, Jiazhi / Shi, Lei

    Sensors (Basel, Switzerland)

    2019  Volume 19, Issue 7

    Abstract: This paper focuses on passive emitter localization using moving sensors. The increase in observation time is beneficial to improve the localization accuracy, but it could cause deterioration of the relative motion between the emitter and the sensors, ... ...

    Abstract This paper focuses on passive emitter localization using moving sensors. The increase in observation time is beneficial to improve the localization accuracy, but it could cause deterioration of the relative motion between the emitter and the sensors, especially the nonlinear motion. The common localization algorithms typically have two steps: (1) parameter estimation and (2) position determination, where the parameters are assumed to be constant, and it is not applicable for long observation times. We proposed the time-varying delay-based direct position determination (DPD-TVD) method, regarding the variation in the propagation time delay during the observation time. Using one step, the proposed algorithm can obtain the emitter's position directly from the received signals by calculating the cost function corresponding to the map grid. By better adapting to highly dynamic scenarios, the proposed algorithm can achieve better localization accuracy than that of constant parameters using one-step or two-step procedures, which is demonstrated by the simulation results.
    Language English
    Publishing date 2019-03-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s19071541
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Suppression strategy of short-term and long-term environmental disturbances for maritime photovoltaic system

    Tang, Ruoli / Lin, Qiao / Zhou, Jinxiang / Zhang, Shangyu / Lai, Jingang / Li, Xin / Dong, Zhengcheng

    Applied energy. 2020 Feb. 01, v. 259

    2020  

    Abstract: The maritime photovoltaic system is easily affected by the special environmental disturbances from the ship and the sea, e.g., the partial and dynamic shadings when moved with a ship, the corrosion of photovoltaic module when continuously worked in high ... ...

    Abstract The maritime photovoltaic system is easily affected by the special environmental disturbances from the ship and the sea, e.g., the partial and dynamic shadings when moved with a ship, the corrosion of photovoltaic module when continuously worked in high salinity oceanic environment. In this study, the optimal configuration of photovoltaic array installed on large ocean-going ship is developed, and a novel offline/online hybrid maximum power point tracking method is presented to suppress the short-term disturbance caused by the partial and dynamic shadings. Then, in order to dynamically track the corrosion of photovoltaic module and suppress the long-term disturbance, the dynamic knowledge-base with time-window is developed. Finally, the proposed methodology is verified by simulation experiments. Experimental results show that in the proposed configuration, location of the maximum power point is closely related to the area and degree of the shading, but is irrelevant to the distribution. Moreover, according to the experimental results, the operation data in the nearest 3 months to 1 year can be collected and employed to train the offline model, in order to obtain the best control performance. With the proposed configuration and control methodology, the environmental disturbances can be efficiently suppressed, the evaluated system can also obtain efficient and robust control performance under complex maritime environment.
    Keywords control methods ; corrosion ; marine environment ; models ; salinity ; shade ; solar collectors
    Language English
    Dates of publication 2020-0201
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2000772-3
    ISSN 0306-2619
    ISSN 0306-2619
    DOI 10.1016/j.apenergy.2019.114183
    Database NAL-Catalogue (AGRICOLA)

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  10. Article: DNA Methylation Regulator-Meditated Modification Patterns Define the Distinct Tumor Microenvironment in Lung Adenocarcinoma.

    Yuan, Didi / Wei, Zehong / Wang, Yicheng / Cheng, Fang / Zeng, Yujie / Yang, Li / Zhang, Shangyu / Li, Jianbo / Tang, Renkuan

    Frontiers in oncology

    2021  Volume 11, Page(s) 734873

    Abstract: Background: Epigenetic changes of lung adenocarcinoma (LUAD) have been reported to be a relevant factor in tumorigenesis and cancer progression. However, the molecular mechanisms responsible for DNA methylation patterns in the tumor immune-infiltrating ... ...

    Abstract Background: Epigenetic changes of lung adenocarcinoma (LUAD) have been reported to be a relevant factor in tumorigenesis and cancer progression. However, the molecular mechanisms responsible for DNA methylation patterns in the tumor immune-infiltrating microenvironment and in cancer immunotherapy remain unclear.
    Methods: We conducted a global analysis of the DNA methylation modification pattern (DMP) and immune cell-infiltrating characteristics of LUAD patients based on 21 DNA methylation regulators. A DNA methylation score (DMS) system was constructed to quantify the DMP model in each patient and estimate their potential benefit from immunotherapy.
    Results: Two DNA methylation modification patterns able to distinctly characterize the immune microenvironment characterization were identified among 513 LUAD samples. A lower DMS, characterized by increased CTLA-4/PD-1/L1 gene expression, greater methylation modifications, and tumor mutation burden, characterized a noninflamed phenotype with worse survival. A higher DMS, characterized by decreased methylation modification, a greater stromal-relevant response, and immune hyperactivation, characterized an inflamed phenotype with better prognosis. Moreover, a lower DMS indicated an increased mutation load and exhibited a poor immunotherapeutic response in the anti-CTLA-4/PD-1/PD-L1 cohort.
    Conclusion: Evaluating the DNA methylation modification pattern of LUAD patients could enhance our understanding of the features of tumor microenvironment characterization and may promote more favorable immunotherapy strategies.
    Language English
    Publishing date 2021-09-06
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2649216-7
    ISSN 2234-943X
    ISSN 2234-943X
    DOI 10.3389/fonc.2021.734873
    Database MEDical Literature Analysis and Retrieval System OnLINE

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