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目前SPP（表面等离子激元）技术应用面临的主要困难依然是SPP传播中的高损耗问题,SPP波导亚波长约束与传播距离的矛盾和SPP传播中的强烈衰减是当前表面等离子研究的关键问题。文章采用非对称介质波导结构设计了一种加载玻璃的SPP传播优化器件,应用的SPP激发模型与Kretschmann结构类似,实现了无需牺牲波导亚波长尺寸来提高SPP传播距离。FDTD（有限差分时域）方法分析结果表明:改进的波导结构能够显著增加SPP传播距离,提高电场强度,SPP传播距离提高了近20倍。对比不同厚度的薄膜层可以看出,薄膜最薄时,局域化效果最好;改进的结构显著增加了SPP耦合效果。这种加载玻璃的SPP传播优化器件为SPP在新型光子器件、宽带通信系统、微小光子回路和光电子集成等方面的应用提供了关键器件。

Copyright of Journal of Functional Materials / Gongneng Cailiao is the property of Chongqing Functional Materials 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 National University of Defense Technology / Guofang Keji Daxue Xuebao is the property of NUDT 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 Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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 Technology of Water Treatment is the property of Technology of Water Treatment 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 China Brewing is the property of China Brewing 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.)

Objective To evaluate the clinical effect of ultrasound-guided intercostal nerve pulsed radiofrequency on the treatment of postherpetic neuralgia in the upper thoracic segment after herpes zoster infection. Methods A total of 67 patients with postherpetic neuralgia in the intercostal nerve of the thoracic region (segments 1, 2, and 3) and back region were included in this study. The patients were randomly assigned into an experimental group and a control group based on the type of treatment method. The experimental group consisted of 34 participants, including 15 males and 19 females, with an average age of (50.6±11.5) years. Pulsed radiofrequency procedure was performed on the intercostal nerves of segments 1, 2, and 3 under the ultrasound guidance for the subjects in the experimental group. The control group comprised 33 subjects, including 16 males and 17 females, with an average age of (51.5±12.7) years. Intercostal nerve block procedure was performed on segments 1, 2, and 3 under the ultrasound guidance for the patients in the control group. The visual analog scale (VAS) pain scores and Pain DETECT scale scores were compared before the treatment and 1, 3, 6, and 12 months after the treatment for the two groups. The recurrence rate of symptoms within 1 year after the treatment was determined and compared between the two groups. Results Complete follow-up was achieved in the 67 patients after the treatment, and the study subjects did not present with adverse reactions. The VAS pain scores and Pain DETECT scale scores at 1, 3, 6, and 12 months after the treatment were significantly better in the experimental group than in the control group (P < 0.05). The VAS pain scores and Pain DETECT scale scores at 1, 3, 6, and 12 months after the treatment were significantly improved compared with the pre-treatment scores for the two groups (P < 0.05). The recurrence rate of symptoms within 1 year after the treatment was significantly lower in the experimental group than in the control group (P < 0.05). These results showed that pulsed radiofrequency method was more effective for the treatment of postherpetic neuralgia in the upper thoracic segment after herpes zoster infection and had less adverse effects compared with the intercostal nerve block approach. Conclusion Ultrasound-guided intercostal nerve pulsed radiofrequency treatment is effective and safe for the treatment of postherpetic neuralgia in the upper thoracic segment after herpes zoster. [ABSTRACT FROM AUTHOR]

Copyright of Food & Fermentation Industries is the property of Food & Fermentation Industries 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 Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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 Journal Of Sichuan University (Natural Sciences Division) / Sichuan Daxue Xuebao-Ziran Kexueban is the property of Editorial Department of Journal of Sichuan University Natural Science Edition 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 Engineering Management & Technology Discussion is the property of Omniscient Pte. 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 Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue is the property of Beijing Research Institute of Mining & Metallurgy Technology Group 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.)

Objective To systematically review the clinical efficacy of Lingjiao Gouteng decoction combined with conventional antihypertensive drugs in the treatment of essential hypertension. Methods Through China Knowledge Network, Wanfang Medical Database, VIP, China Biomedical Literature Service System, PubMed, Cochrane Library, Web of Science and other databases were searched and included in the literature of clinical randomized controlled trials on the clinical efficacy of Lingjiao Gouteng Decoction combined with conventional antihypertensive drugs in the treatment of essential hypertension from the establishment of the database to December 2022.After screening the literature, the researchers extracted the relevant information, used Cochrane system review method to analyze the risk of literature bias and evaluate the quality, and used RevMan 5.3 software for meta-analysis. Results A total of nine articles were included, and 1 052 patients were included in the study (525 cases in the experimental group and 527 cases in the control group) .Meta-analysis showed that the treatment of patients with treatment group total effective [relative risk=1.22, 95%CI (1.16,1.29), P＜0.000 01], systolic blood pressure [mean square deviation (MD) =-9.00, 95%CI (-10.22,-7.77), P＜0.000 01],diastolic blood pressure [MD=-5.56, 95%CI (-6.37,-4.75), P＜0.000 01] were higher than the control group. Conclusion Lingjiao Gouteng Decoction combined with conventional antihypertensive drugs can improve the clinical efficacy of the treatment of essential hypertension, and the antihypertensive effect is obvious. [ABSTRACT FROM AUTHOR]

The synthesis of 4-phenyl buty-2-ketone from ethyl acetoacetate and benzyl chloride is a classical organic chemistry experiment, but the yield is only 20%-30% in practical teaching. This paper records the process of teachers guiding students to separate the byproduct in the experiment, determines it as 2,2-dibenzyl-3-oxybutyrate, analyzes the causes of the byproduct, and inspires the students to innovate the experimental method to increase the yield to 57.5%. This teaching practice not only guides students with regard to experimental innovation but also improves the scientific research literacy of students. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Ground Improvement is the property of Journal of Ground Improvement 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 Chinese Journal of Ophthalmology & Otorhinolaryngology is the property of Eye & ENT Hospital of Fudan 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 Sichuan University (Natural Sciences Division) / Sichuan Daxue Xuebao-Ziran Kexueban is the property of Editorial Department of Journal of Sichuan University Natural Science Edition 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 Sichuan University (Natural Sciences Division) / Sichuan Daxue Xuebao-Ziran Kexueban is the property of Editorial Department of Journal of Sichuan University Natural Science Edition 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 Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao is the property of Journal of Agricultural Resources & Environment Editorial Board 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 Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic 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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Field experiments were conducted to study the service function value of rice field ecosystems with different planting patterns. Using Y - OL（70% chemical fertilizer + 30% cow manure-rice-Lolium multiflorum Lamk.）, Y-OV（70% chemical fertilizer + 30% cow manure-rice-Vicia villosa Rothvar）, and Y-ON（70% chemical fertilizer +30% cow manure-rice-winter fallow）, three rotation treatments were conducted, and conventional fertilization and tillage mode C-ON（100% chemical fertilizer-rice-winter fallow）were used as the control. The functional value evaluation method and equivalent factor method were combined to estimate the service function value of the rice field ecosystem. Results showed that the service function values of the rice field ecosystem services in the Y-OL and Y-OV treatments were 169 669 yuan·hm-2 and 168 405 yuan·hm-2, respectively; the Y-ON and C-ON treatments yielded 99 247 yuan·hm-2 and 72 717 yuan·hm-2, respectively. The processing value of the Y-OL and Y-OV functions was significantly higher than that of Y-ON and C-ON, and the total value of the Y-ON processing service function was significantly higher than that of the C-ON processing（P<0.05）. Among them, the economic values of agricultural products, gas regulation, waste absorption, water purification, soil organic matter accumulation, nutrient recycling, biodiversity, and aesthetic landscapes of optimized fertilization and rotation were significantly higher than those of the conventional fertilization method（P<0.05）. In the optimized fertilization rotation, the water purification and nutrient cycle values of the rice-Vicia villosa Rothvar rotation were significantly higher than those of the rice-Lolium multiflorum Lamk. rotation（P<0.05）. In summary, 70% chemical fertilizer + 30% cow manure-rice-Lolium multiflorum Lamk and 70% chemical fertilizer + 30% cow manurerice-Vicia villosa Rothvar could effectively improve the functional service value of the rice field ecosystem, with the 70% chemical fertilizer+ 30% cow manure-rice-Vicia villosa Rothvar demonstrating a better effect. [ABSTRACT FROM AUTHOR]

Copyright of Journal Of Sichuan University (Natural Sciences Division) / Sichuan Daxue Xuebao-Ziran Kexueban is the property of Editorial Department of Journal of Sichuan University Natural Science Edition 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 Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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 Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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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