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Copyright of Journal of Southern Yangtze University: Humanities & Social Sciences Edition is the property of Jiangnan Daxue and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

目的 分析血管迷走性晕厥患者的临床特点，探讨其晕厥前是否有晕厥先兆的影响因素。 方法 回顾性纳入2017年1月—2022年6月首都医科大学附属北京天坛医院诊治的血管迷走性晕厥患者为研究对象。采集其一般资料、直立倾斜试验结果及血流动力学指标，采用多因素logistic回归分析探讨患者发生晕厥先兆的影响因素。 结果 研究共纳入血管迷走性晕厥患者1211例。根据其发生晕厥前是否有先兆症状进行分组，其中无先兆组582例（48.06%），有先兆组629例（51.94%）。有先兆组患者的年龄（t=6.006，P

Copyright of National Palace Museum Research Quarterly is the property of National Palace Museum and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Contemporary Pediatrics is the property of Xiangya Medical Periodical Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Xi'an Jiaotong University is the property of Editorial Office of Journal of Xi'an Jiaotong University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Xi'an Jiaotong University is the property of Editorial Office of Journal of Xi'an Jiaotong University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

相比于柔性直流输电（VSC-HVDC）送出方案，送端采用不控整流器（diode rectifier，DR）的DR-HVDC方案具有损耗低、体积小和成本低的优点，是未来海上风电送出技术的重要发展方向之一。为了解决黑启动和海上交流电压调控问题，现有的DR-HVDC拓扑主要采用海上平台装设储能、系统增加交流联络线路、送端换流站并联VSC三种方案。以深远海海上风电送出为背景，对上述三种DR-HVDC拓扑方案进行了经济性分析，并与VSC-HVDC方案进行比较。采用了全寿命周期成本分析（life cycle cost analysis, LCCA）方法，建立了上述四种送出方案的经济性分析模型，并对各方案的离岸距离、装机容量、上网电价以及有效工作时长等因素进行单一变量分析。结果表明，相比于VSC-HVDC，DRHVDC送出方案的换流站成本、运行损耗和维护成本均显著降低。同时，随着海上风电容量和输送距离的增加，采用送端并联VSC和送端储能的DR-HVDC方案的经济性优势更加明显。因此，DR-HVDC送出方案在海上风电并网中具有广阔的应用前景。

针对无线光通信（WOC）技术高频谱效率以及低误码率的需求，文章提出了一种脉冲幅度调制（PAM）与脉冲位置调制（PPM）联合的调制方法，在传统调制技术的基础上充分利用无线通信带宽资源提高了传输速率。系统采用空域映射（SM）方式将不同幅度脉冲映射至特定激光器，并通过映射关系完成多链路分层传输。与传统单调制方式相比，联合调制技术通过编码机制的协调配合，利用脉冲的幅度以及所在时隙位置的变化来传递信息。实验测试证明，采用联合调制分层传输技术，通过同时发送和检测每个数据脉冲的时隙位置及幅度信息，不仅提升了系统频谱效率和传输速率，误码性能也得到了有效改善，实验结果为后续应用研究提供了一种新的技术途径。

Organic-inorganic hybrid luminescent materials are highly favored in the luminescence anti-counterfeiting field due to their tunable structural and luminescent properties. This study investigates Sb(III) doped Bi(III)-based zerodimensional organic-inorganic hybrid metal halides, demonstrating the transformation from kinetic products (compound 1) to thermodynamic products (compound 2) by various crystal growth methods. X-ray powder diffraction and fluorescence spectroscopy were employed to characterize their phase and optical properties, revealing distinct differences between the two compounds. Compound 2 exhibits fluorescence quenching when exposed to distilled water and possesses robust hydrophobic properties, allowing for stable long-term storage in aqueous environments. Leveraging the exceptional color-changing properties of compound 2, a simple water-writable fluorescent anticounterfeiting board/paper was fabricated. This experiment exemplifies the principle that “structure determines properties” and embodies the educational philosophy of “learning through application”. The experimental design and implementation aim to cultivate students' innovative thinking and enhance their abilities to analyze and solve practical issues. [ABSTRACT FROM AUTHOR]

Objective: To explore the changing trajectory of psychological distress in young and middle-aged patients during peridialysis period. Methods: Totally 122 patients in the peridialysis period were investigated with the Self-Designed General Data Questionnaire, Distress Screening Scale（DSS）,Connor-Davidson Resilience Scale（CD-RISC）,Social Support Revalued Scale（SSRS） and Self-Perceived Burden Scale（SPBS） at the time of diagnosis, initial dialysis, and dialysis for 1 month,2 months and 3 months, respectively. The growth mix model was used to identify trajectory categories. Results: The time main effect of scores of DSS, CD-RISC and SPBS in peridialysis patients was statistically significant（Ps ＜0.05）,the scores of DSS and SPBS were the highest at the initial dialysis and the lowest at 3 months of dialysis. The CD-RISC scores were the lowest at the first dialysis and the highest at 3 months of dialysis. The trajectory of psychological distress was divided into 3 types, namely continuous high level（26.20%）,high level decline（40.72%）,and medium-low level decline（33.08%）.Conclusion: The psychological distress of young and middle-aged peridialysis patients shows different trajectories from diagnosis to regular dialysis. Clinical staff should pay more attention to the psychological status of the first-time dialysis patients. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Network & Information Security is the property of Beijing Xintong Media Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Chemical Engineering (China) / Huaxue Gongcheng is the property of Hualu Engineering Science & Technology Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Stroke is the property of Chinese Journal of Stroke Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Oilfield Chemistry is the property of Sichuan University, Oilfield Chemistry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)