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【目的】探讨经下腔静脉(IVC)肝内穿刺介入操作, 包括肝静脉造影、第二肝门重建术(RSHH)和直接肝内门腔 分流术(DIPS)的临床应用。【方法】回顾性分析11 例经IVC 肝内穿刺介入操作, 评价临床疗效。【结果】11 例成功行经IVC 内穿刺操作, ①经IVC 肝内穿刺肝静脉造影及第二肝门重建术:其中7 例行第二肝门重建术, 术后门脉高压症状明显改善5 例, 轻度改善2 例;1 例IVC 阻塞症状轻度改善;4 例消化道出血患者中, 3 例术后8 个月～ 3 年均再无发生, 1 例术后1 个月再 发急性出血;另2 例只行肝静脉造影;②直接肝内门腔分流术:共2 例, 术后门脉高压症状均明显改善, 分别于术后2 年及4 年 内未发生消化道出血。【结论】①经IVC 肝内穿刺肝静脉造影可准确评价肝静脉和门静脉系统血流动力学状况;②经IVC 途 径的第二肝门重建术穿刺安全, 成功率高。重建通道效果明确, 术后狭窄少;③DIPS 优点是穿刺安全简便, 分流效果好。保护 正常肝静脉, 减少胆道损伤, 术后狭窄少。

【目的】探讨化学髓核溶解术的一种新的穿刺方法,用于治疗破裂型腰椎间盘突出症。【方法】采用经背后入路 直接穿刺椎间盘脱出部位,用 600 单位的胶原酶溶解脱出的椎间盘组织治疗破裂脱出型腰椎间盘突出症。本组治疗 43 例临 床确诊为破裂脱出型腰椎间盘突出症, 并随访半年至2 年。【结果】采用本穿刺方法治疗43 例腰椎间盘脱出患者, 治愈27 例, 治愈率为63%,有效 11 例,有效率为 88%, 无椎间盘变窄和退行性变等并发症出现。【结论】经背后入路直接穿刺脱出的椎间 盘组织行胶原酶溶解术是一种操作简单、安全 、有效的新方法, 可减少并发症的发生。

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 Feed Industry is the property of Liaoning Provincial Institute of Agricultural Mechanization 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.)

High-quality rural tourism is a catalyst for bridging the urban-rural cultural divide, elevating the living standards of farmers, and propelling rural revitalization. Understanding the spatiotemporal dynamics of this development is crucial for its advancement. In this study, an evaluation index for high-quality rural tourism development is established, employing the entropy method to score it in the Yangtze River Economic Belt from 2010 to 2021. Regional disparities are analyzed using the Theil index. The findings are as follows: Rural tourism quality in the Yangtze River Economic Belt steadily improved, with a slight decline during the epidemic. While the green ecological dimension decreased, other indicators showed an upward trend. Clear regional differences exist, with the lower reaches > upper reaches > middle reaches. Overall disparities in rural tourism development have gradually narrowed. Overall disparities in the Yangtze River Economic Belt continue to decrease, with regional trends exerting a more pronounced impact. Differences in the upper, middle, and lower reaches and their influence on overall disparities demonstrate differentiation. In light of these findings, policy recommendations include enhancing urban infrastructure, promoting green development, and deepening rural economic integration. These actions aim to sustain the positive trajectory of rural tourism and foster its continued growth. [ABSTRACT FROM AUTHOR]

"The Picture of a Thousand Miles of Rivers and Mountains" stands as one of China's ten great masterpieces, symbolizing not only the evolution of green landscape painting but also encapsulating a microcosm of ancient Chinese civilization. Handed down through centuries, this painting continues to radiate vibrancy and color, intricately intertwined with its materials, pigments, and binding agents. This article adopts a chemical perspective to meticulously analyze the pigments and binding agents employed in "The Picture of a Thousand Miles of Rivers and Mountains", personifying them as "Brother Graphite", "Aunt Ochre", "Brothers Green and Blue", "Miss Agate", and "Uncle Gelatin", elucidating their distinctive personalities and characteristics. Furthermore, it delves into their chemical components and physical properties, unveiling the magnificent secret behind the creation of "The Picture of a Thousand Miles of Rivers and Mountains" by these remarkable pigments. By provoking contemplation on the amalgamation of classical art and modern technology, this article strives to foster the convergence of art appreciation and technological innovation. [ABSTRACT FROM AUTHOR]

Copyright of Nonferrous Metals (Mineral Processing Section) 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.)

Copyright of Nonferrous Metals (Mineral Processing Section) 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.)

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.)

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.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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 Traditional Chinese Drug Research & Clinical Pharmacology is the property of Traditional Chinese Drug Research & Clinical Pharmacology 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.)

为了优化脂肪酰乙醇胺的制备工艺，以油酸甲酯和乙醇胺为原料，采用无溶剂法制备油酰乙醇胺，采用单因素实验优化了反应条件。然后以10种脂肪酸甲酯为原料，考察了该反应方法的普适性，并对制备得到的10种脂肪酰乙醇胺的结构进行了表征。结果表明：制备油酰乙醇胺的最佳工艺条件为无溶剂、油酸甲酯与乙醇胺物质的量比1∶ 5、反应温度100 ℃、反应时间15 h，在此条件下油酰乙醇胺产率为76.52%；在最佳工艺条件下考察了反应底物的普适性，得到10种脂肪酰乙醇胺目标化合物，其产率在53%~87%之间，并通过核磁氢谱、碳谱以及高分辨质谱确证了目标化合物的结构。该方法反应条件绿色无污染，分离纯化成本低，操作简易，且可以获得克级以上的高纯度脂肪酰乙醇胺，可为以后开展脂肪酰乙醇胺生物活性研究提供足够的样品。 In order to optimize the process of preparation of fatty acid ethanolamine, with methyl oleate and ethanolamine as raw materials, n-oleoyl ethanolamine was prepared by solvent free method, and the reaction conditions were optimized by single factor experiment. Then 10 fatty acid methyl esters were used as raw materials, the universality of the method was investigated, and the structures of 10 fatty acid ethanolamines were characterized. The results showed that the optimal process conditions of preparation of n-oleoyl ethanolamine were obtained as follows:solvent free, molar ratio of methyl oleate to ethanolamine 1∶ 5, reaction temperature 100 ℃ and reaction time 15 h. Under these conditions, the yield of n-oleoyl ethanolamine was 76.52%. Under the optimal conditions, the universality of the substrate was investigated, and the yields of the 10 fatty acid ethanolamines(target compounds) were 53%-87%. The structures of the target compounds were further confirmed by 1H NMR, 13C NMR and high resolution mass spectrometry. The method has the advantages of no pollution, low cost, simple operation, and can obtain high-purity fatty acid ethanolamine above gram level, which can provide sufficient samples for the biological activity research of fatty acid ethanolamine in the future.

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research 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 Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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 Hainan Medical University is the property of Journal of Hainan Medical College 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 explore the imaging characteristics and clinical application value of infrared thermal imaging in a rat model of slow femoral venous blood flow. Methods Twelve Sprague-Dawley rats were randomly divided into two groups: the epinephrine group (model group) and the saline group (control group). The model group received 1 mg/mL epinephrine injections, while the control group received an equal volume of saline, administered twice. Two hours after the first injection, the rats were made to swim in ice water for 5 minutes. Infrared thermal imaging was used to measure the temperature of both sides of the femoral triangle region before and after modeling. Blood samples were collected from the abdominal aorta to test coagulation indicators and IL-6 levels, and the right femoral vein was subjected to pathological examination. Results In the model group, activated partial thromboplastin time (APTT) (P＜0.01) and thrombin time (TT) (P＜0.01) were significantly shorter than those in the control group, and IL-6 levels were higher (P=0.02). Histological examination of femoral vein sections showed normal vascular morphology with no clear inflammation or thrombosis. The highest pre-modeling temperature in the femoral triangle region of the model group was (35.34±0.47) ℃, and post-modeling was (36.57±0.94) ℃, showing a statistically significant difference (P＜0.01). The post-modeling highest temperature in the model group was higher than that in the saline group (P＜0.01). Conclusion Infrared thermal imaging of the rat model of slow femoral venous blood flow shows relatively high temperatures. With its non-invasive and radiation-free advantages, infrared thermal imaging can serve as an auxiliary diagnostic tool for slow blood flow conditions. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Oncology Prevention & Treatment is the property of Editorial Department of Chinese Journal of Oncology Prevention & Treatment 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.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department 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 Natural Disasters 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 Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications 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 Geomechanics is the property of Journal of Geomechanics 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 Silk is the property of Zhejiang Sci-Tech University Magazines 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 Research of Soil & Water Conservation is the property of Institute of Soil & Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources 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.)

The purpose of this study is to explore the boiling heat transfer performance of microchannel flow under the combination of two enhanced technologies of pin electrodes and phase separation structure. Therefore, a parallel bidirectional microchannel heat sink was proposed to realize the gas-phase separation by switching high and low pressure for the downstream and countercurrent microchannels. Ethanol was taken as an experimental working fluid, while the modified polyvinylidene fluoride (PVDF) was as a gas-liquid phase separation tool. Then the flow boiling experiment was carried out under the conditions of inlet supercooling at 10 °C and effective heat flux range of 48.08 -87.29 kW/m², where other experimental conditions remained the same. Furthermore, the heat transfer enhancement factor of saturated boiling heat transfer coefficient (Fht) was introduced to investigate the boiling heat transfer mechanism in the microchannel under the combination of the number of pores in different phase separation structures (4-hole PSS-1, 6-hole PSS-2, 10-hole PSS-3) (Phase Separation Structure, PSS) and different electric field strengths (200, 400 and 600 V). The results show that the heat transfer performance of the microchannel under the action of the single-phase separation structure and the pin electrodes was effectively improved under the same working conditions, compared with the ordinary microchannel (0 V without electric field and 0-hole PSS-0 without phase separation structure). The number of opening holes shared a strong correlation with the enhanced heat transfer of the phase separation structure. The maximum Fht of the phase separation structure was 1.14 at a heat flux of 80 kW/m², with an increase in the number of opening holes. There was the strengthening effect of the electric field on small or confined bubbles, with small lengths and diameters. An outstanding strengthening was found under the condition of low and medium heat flux, such as the maximum Fht under pin electrodes was 1.20 at a heat flux of 65 kW/m². The heat transfer performance of the microchannel was further improved under the combined role of phase separation structure and pin electrodes, in which the maximum Fht was 1.29. In addition, the electric field was introduced to improve the strengthening effect of the phase separation structure at low heat flux density. The phase separation structure also effectively enhanced the strengthening effect of the electric field at high heat flux density, indicating the synergistic effect. In addition, the comparison was made on the effects of phase separation structure and electric field enhancement on the heat transfer of micro-channel boiling under the condition of mass flow rate (86.11 and 172.11 kg/(m²·s) of the two groups. The results show that the strengthening effect of phase separation during the boiling heat transfer of the microchannel was weakened at the high mass flow rate, compared with the low one. The strengthening effect of the electric field was enhanced, according to the influence of fluid flow rate. And there was little difference in the enhanced effect of boiling heat transfer under the two mass flow rates. The finding can provide a strong reference for the phase separation structure combined with the electric field. [ABSTRACT FROM AUTHOR]

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 Zhengzhou University (Natural Science Edition) is the property of Journal of Zhengzhou University (Natural Science Edition) 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 Zhengzhou University (Natural Science Edition) is the property of Journal of Zhengzhou University (Natural Science Edition) 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 Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction 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 Tropical Medicine is the property of China Tropical Medicine 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 Rehabilitation Medicine is the property of China Association of Rehabilitation Medicine, China-Japan Friendship Hospital 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 Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment 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.)

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Copyright of China Journal of Oral & Maxillofacial Surgery is the property of Shanghai Jiao Tong University, College of Stomatology 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 Hubei Open Vocational College is the property of Journal of Hubei Open Vocational College 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.)