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  1. Artikel ; Online: RIS-aided dynamically adaptive wide field-of-view receiver for visible light communication in industrial internet of things.

    Ye, Zi-Wei / Zhang, Yan-Yu / Wang, Chao / Fan, Peng-Hui / Zhu, Yi-Jun

    Optics express

    2023  Band 31, Heft 21, Seite(n) 34748–34763

    Abstract: In the current visible light communication (VLC) system, a condenser lens is generally used in the front of receiver to achieve a higher data rate, making an extremely narrow field-of-view for the receiver. With the spread of Industrial Internet of ... ...

    Abstract In the current visible light communication (VLC) system, a condenser lens is generally used in the front of receiver to achieve a higher data rate, making an extremely narrow field-of-view for the receiver. With the spread of Industrial Internet of Things (IIoT), the communication between mobile terminals is urgently required. A wide-range detecting method for VLC system in IIoT scenario is asked. In this paper, a novel self-adaptive wide-FoV receiver involving reconfigurable intelligent surfaces (RIS) is proposed. The effective detecting range of the receiver can be expanded by dynamically adjusting the incident light directions with the assistance of RIS. Based on the maximum arrived flux criterion, the mathematical model is established and the optimized RIS parameter tuning algorithm is presented. The feasibility and validity of the method are verified by simulation. The results show that the tolerable transceiver offset can be increased to 2∼4 times as the conventional receiver.
    Sprache Englisch
    Erscheinungsdatum 2023-10-19
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.500805
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Tetrahydrocurcumin induces G2/M cell cycle arrest and apoptosis involving p38 MAPK activation in human breast cancer cells.

    Kang, Ning / Wang, Miao-Miao / Wang, Ying-Hui / Zhang, Zhe-Nan / Cao, Hong-Rui / Lv, Yuan-Hao / Yang, Yang / Fan, Peng-Hui / Qiu, Feng / Gao, Xiu-Mei

    Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association

    2014  Band 67, Seite(n) 193–200

    Abstract: Curcumin (CUR) is a major naturally-occurring polyphenol of Curcuma species, which is commonly used as a yellow coloring and flavoring agent in foods. In recent years, it has been reported that CUR exhibits significant anti-tumor activity in vivo. ... ...

    Abstract Curcumin (CUR) is a major naturally-occurring polyphenol of Curcuma species, which is commonly used as a yellow coloring and flavoring agent in foods. In recent years, it has been reported that CUR exhibits significant anti-tumor activity in vivo. However, the pharmacokinetic features of CUR have indicated poor oral bioavailability, which may be related to its extensive metabolism. The CUR metabolites might be responsible for the antitumor pharmacological effects in vivo. Tetrahydrocurcumin (THC) is one of the major metabolites of CUR. In the present study, we examined the efficacy and associated mechanism of action of THC in human breast cancer MCF-7 cells for the first time. Here, THC exhibited significant cell growth inhibition by inducing MCF-7 cells to undergo mitochondrial apoptosis and G2/M arrest. Moreover, co-treatment of MCF-7 cells with THC and p38 MAPK inhibitor, SB203580, effectively reversed the dissipation in mitochondrial membrane potential (Δψm), and blocked THC-mediated Bax up-regulation, Bcl-2 down-regulation, caspase-3 activation as well as p21 up-regulation, suggesting p38 MAPK might mediate THC-induced apoptosis and G2/M arrest. Taken together, these results indicate THC might be an active antitumor form of CUR in vivo, and it might be selected as a potentially effective agent for treatment of human breast cancer.
    Mesh-Begriff(e) Apoptosis/drug effects ; Breast Neoplasms/enzymology ; Breast Neoplasms/pathology ; Cell Division/drug effects ; Curcumin/analogs & derivatives ; Curcumin/pharmacology ; Enzyme Activation ; G2 Phase/drug effects ; Humans ; MCF-7 Cells ; p38 Mitogen-Activated Protein Kinases/metabolism
    Chemische Substanzen tetrahydrocurcumin (00U0645U03) ; p38 Mitogen-Activated Protein Kinases (EC 2.7.11.24) ; Curcumin (IT942ZTH98)
    Sprache Englisch
    Erscheinungsdatum 2014-05
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 782617-5
    ISSN 1873-6351 ; 0278-6915
    ISSN (online) 1873-6351
    ISSN 0278-6915
    DOI 10.1016/j.fct.2014.02.024
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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