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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.)

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Copyright of Laser Technology 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 Journal of Laser Biology / Acta Laser Biology Sinica is the property of Acta Laser Biology Sinica 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 Urban Mass Transit is the property of Urban Mass Transit 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.)

In order to explore the mental workload levels of pilots at different stages of airfield traffic pattern, search for electrocardiogram indicators that represent mental workload, a six degree of freedom simulation flight experiment on pentagonal flight tasks for pilots was conducted, the mental workload levels during the flight process was measured, data on various electrocardiogram (ECG) indicators of pilots at different flight stages was collected, and factor analysis was used to construct a pilot mental load model to analyze and verify the characteristics of changes in the mental workload of pilots at different flight stages. The results indicate that compared to heart rate indicators, heart rate variability indicators have higher reliability and validity in measuring pilot mental workload. The mental workload during takeoff and ascent stages is at a relatively low level and shows a decreasing trend. The cognitive load level during the cruise phase is low and the trend of change is smooth. The mental workload level during the approach and landing phase is the highest. In addition, unexpected events can significantly affect the mental workload, causing a significant increase in the pilot􀆳s mental load. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences 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 Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences 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 Chinese Potato Journal is the property of Northeast Agricultural 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 Chinese Potato Journal is the property of Northeast Agricultural 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 Shenyang Pharmaceutical University is the property of Shenyang Pharmaceutical 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 Railway Signalling & Communication Engineering is the property of Railway Signalling & Communication Engineering 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 Explosives & Propellants is the property of Chinese Journal of Explosives & Propellants 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 Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology 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 Smart Rail Transit is the property of Smart Rail Transit 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 Plastics / Zhongguo Suliao is the property of Journal Office of CHINA PLASTICS 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 Railway Construction Technology is the property of Railway Construction Technology 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 Power Generation Technology is the property of Power Generation Technology 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 Chemistry & Industry of Forest Products is the property of Chemistry & Industry of Forest Products 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 Advanced Textile Technology 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 Sichuan Mental Health is the property of Sichuan Mental Health Center 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 Hydrogeology & Engineering Geology / Shuiwendizhi Gongchengdizhi is the property of Hydrogeology & Engineering Geology 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 Chinese Institute of Food Science & Technology is the property of Journal of Chinese Institute of Food Science & Technology Periodical 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 Engineering Science Research & Application 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 Engineering Science Research & Application 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 Engineering Science Research & Application 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.)

目的 将二维超声、微血管成像技术、超声造影颈动脉斑块相关的声像图特征及临床卒中的危险因 素纳入Logistic回归，明确对缺血性卒中最有影响的斑块特征及危险因素，明确超声联合诊断效能。 方法 选择2016年8月-2017年10月在首都医科大学附属北京天坛医院超声科行颈动脉超声检查显 示存在颈动脉斑块的患者92例，共105个斑块，依据临床诊断是否发生缺血性卒中症状分为症状组和 非症状组。记录斑块声像图特征及患者临床资料。将单因素分析有差异的危险因素纳入Logistic回归 分析，并绘制受试者工作特征（receiver operating characteristic，ROC）曲线。 结果 单因素分析显示，吸烟指数、血清总胆固醇、低密度脂蛋白、载脂蛋白B、超声造影（contrastenhanced ultrasonography，CEUS）增强程度、CEUS显示斑块表面形态、超微血管成像（superb microvascular imaging，SMI）显示新生血管、SMI显示斑块表面形态、钙化结节位置在症状组和非症状 组的差异有统计学意义。Logistic回归显示，CEUS高增强[比值比（odds ratio，OR）9.610，95%可信区 间（confidence interval，CI）2.734～33.779，P＜0.001]、SMI 显示斑块表面不规则（OR 4.483，95%CI 1.323～15.189，P =0.016）、表面钙化结节（OR 7.206，95%CI 1.609～32.265，P =0.010）是预测缺血 性卒中的易损斑块特征。上述征象ROC曲线下面积、预测缺血性卒中的灵敏度、特异度分别为0.723、 75.8%、67.4%；0.657、50.1%、76.1%；0.679、40.7%、82.6%。多模态超声联合诊断预测缺血性卒中曲 线下面积、灵敏度、特异度分别为0.837、90.5%、62.0%。 结论 CEUS高增强、SMI显示斑块表面不规则、表面钙化结节提示颈动脉粥样硬化斑块易损，是预 测缺血性卒中的独立危险因素。超声联合诊断对预测缺血性卒中准确性显著提高。 Abstract: Objective To investigate the valuable characteristics of vulnerable carotid plaques in predicting ischemic stroke by multimode ultrasound, and evaluate the diagnostic value of multimode ultrasound. Methods A total of 92 patients who underwent carotid ultrasound examination at department of ultrasound of Beijing Tiantan hospital, capital medical university from August 2016 to October 2017 were included in this study. The multimode ultrasound included routine two-dimensional ultrasound, contrast-enhanced ultrasonography (CEUS) and superb microvascular imaging (SMI). A total of 105 plaques were diagnosed, and all patients were divided into symptomatic group and nonsymptomatic group according to clinical symptoms. The ultrasonographic characteristics of plaques and the patients’ clinical data were included in univariate analysis, and the statistically significant factors were then included in Logistic regression analysis. The receiver operating characteristic (ROC) curve was plotted to test the sensitivity and specificity of predictive diagnosis. Results Univariate analysis showed that smoking index, serum total cholesterol, low density lipoprotein, apolipoprotein B, signal enhancement on CEUS, neovascularization on SMI, plaque surface morphology on CEUS and SMI, calcified nodule location were statistically significant. The Logistic regression analysis showed that high enhancement on CEUS [odds ratio (OR) 9.610, 95% confidence interval (CI) 2.734-33.779, P

China’s silk industry has a long history and advanced technology, but it gradually declined in modern times. With the establishment of the People’s Republic of China in 1949, silk production gradually increased, and until the reform and opening up in 1978, it achieved great development in science and technology. Science and technology awards provide material and spiritual rewards for scientific discoveries and technological inventions. The state science and technology awards are one type of science and technology awards. They are currently the highest awards for science and technology in China. They have officially resumed awards since the reform and opening up in 1978. Currently, there are five awards. The silk award in the state science and technology awards represents the highest level of China’s silk technology and is also a witness to the development of silk technology since the reform and opening up. According to the statistics of this paper, the silk industry won 54 awards, with focus on the three awards of the State Natural Science Award, the State Technological Invention Award and the State Scientific and Technological Progress Award. In this paper, the issue of the State Science and Technology Awards was divided into three time stages: 1979–1985, 1986–1999, and 2000–2020, and 54 silk award-winning achievements were divided into two parts: sericulture and industry. The regional distribution, transfer of research and development subjects, and the growth and decline of award-winning industries were analyzed, and the characteristics, laws and trends were further summarized to provide historical reference for future silk technology innovation. Five conclusions were drawn. First, the number and proportion of the State Science and Technology Awards for silk decreased but the quality increased, which was in line with the reform trend of China’s science and technology award system. Second, the largest number of silk awards in the Yangtze River Delta region shows that its silk research was in a leading position in China and had the characteristics of complementary sericulture and industry. The award-winning projects in other eight regions with relatively advanced silk technology were either sericulture or industry. Third, based on the type of the first contributor with the largest contribution and a leading role for statistics, the award-winning research institutions regarding sericulture had always been dominated by scientific research institutes in the three stages, while the award-winning research institutions in the silk industry had experienced a transfer from enterprises to universities. This shows that the current scientific research capabilities of silk enterprises have not been fully utilized. In the future, silk enterprises should strengthen scientific research innovation and conduct more cooperation. Fourth, silkworm varieties received the most awards in sericulture, followed by silkworm diseases and silkworm medicines, mulberry trees, and comprehensive utilization of silk resources. The focus of scientific research changed from silkworm diseases and silkworm medicines to silkworm varieties in the three stages, and the main objective changed from increasing production to improving quality. The industry received the most awards for machinery and equipment, followed by dyeing and finishing, silk weaving, and silk reeling. The focus of scientific research changed from machinery and equipment to dyeing and finishing in the three stages, and the main objective changed from both production scale and product quality to mainly improving production quality. Fifth, the accumulation of scientific research results and the improvement of the level of science and technology provide the possibility for sericulture and industry to break barriers and realize the extension of the industrial chain. In the future, the silk industry may achieve subversive development in genetic engineering and biomaterials. [ABSTRACT FROM AUTHOR]

Copyright of Food & Machinery is the property of Food & Machinery 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 Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical Journal 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 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.)

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Copyright of Chinese Potato Journal is the property of Northeast Agricultural 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 Chinese Journal of Arteriosclerosis is the property of Chinese Journal of Arteriosclerosis 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.)