Risultati della ricerca - Yuxin Zheng

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  1. 1

    Primary thyroid squamous cell carcinoma with severe respiratory stenosis and endotracheal invasion: a case report with literature review di Xueliang Liu, Shang Ma, Yuxin Zheng, Zeming Xu, Hui Hao, Hongyan Ma, Qian Xu

    Pubblicazione 2025-07-01

    IntroductionPrimary squamous cell carcinoma of the thyroid (PSCCT) is a rare and highly aggressive malignant tumor with a poor prognosis. Although surgery, chemotherapy and other treatment methods have been reported, the current treatment modality has not reached a consensus. This study discusses th...

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  2. 2

    Enhancing Both TM- and TE-Polarized Light Extraction Efficiency of AlGaN-Based Deep Ultraviolet Light-Emitting Diode via Air Cavity Extractor With Vertical Sidewall di Yonghui Zhang, Yuxin Zheng, Ruilin Meng, Ce Sun, Kangkai Tian, Chong Geng, Zi-Hui Zhang, Guoxu Liu, Wengang Bi

    Pubblicazione 2018-01-01

    In this work, we investigate the effect of sidewall angle, height and space of an air cavity extractor (AC-Extractor) on the polarization-dependent light extraction efficiency (LEE) for AlGaN-based deep-ultraviolet light-emitting diodes (DUV LEDs) using three-dimensional finite difference time-domai...

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  3. 3

    The Effect of Sapphire Substrates on Omni-Directional Reflector Design for Flip-Chip Near-Ultraviolet Light-Emitting Diodes di Yonghui Zhang, Ji Zhang, Yuxin Zheng, Ce Sun, Kangkai Tian, Chunshang Chu, Zi-Hui Zhang, Jay Guoxu Liu, Wengang Bi

    Pubblicazione 2019-01-01

    In this paper, we investigate the effect of omni-directional reflectors (ODRs) on the light extraction efficiency (LEE) for flip-chip near-ultraviolet light-emitting diodes (LEDs) on patterned (PSS) and flat sapphire substrate (FSS) using three-dimensional finite-difference time-domain method. Diffe...

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  4. 4

    Prehospital blood pressure lowering in patients with ultra-acute presumed stroke: A systematic review and meta-analysis. di Yuyang Liu, Yaheng Tan, Jun Wan, Yangchun Xiao, Qiwen Chen, Yuxin Zheng, Chengli Tian, Xinyue Wang, Wenhao Xu, Xueying Yu, Dianxiang Lu

    Pubblicazione 2025-01-01

    <h4>Objective</h4>High blood pressure frequently occurs in the setting of acute stroke and is associated with worse prognoses. However, it is still uncertain whether initiating blood pressure-lowering therapy in the prehospital phase after stroke onset can enhance outcomes for patients w...

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