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Copyright of Journal of Clinical Pediatric Surgery is the property of Journal of Clinical Pediatric Surgery 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.)

Objectives To investigate the risk factors of delayed gastric emptying (DGE) after laparoscopic pancreaticoduodenectomy (LPD), and summarize the nursing measures of prevention and treatment for DGE, so as to provide reference basis for clinical nursing work in the future. Methods Between April 2018 and December 2019, clinicopathological data of 163 patients underwent LPD were retrospectively collected, including general information, laboratory data, operative data and postoperative outcomes. All patients were divided into 2 groups according to whether delayed gastric emptying occurred after operation, then risk factors of delayed gastric emptying following LPD were analyzed. Results The results shown that the diabetes (P=0. 017), degree of weight loss (P

A displacement sensor with smaller volume and lower cost is needed for magnetic suspension control system. A transverse flux displacement sensor based on eddy current sensors is studied. The sensor analysis is based on its working principle. The parameters of excitation coil and induction coil are designed by particle swarm optimization, and the design process of the transverse flux sensor is simplified. The developed displacement sensor has a sensitivity of 7.2 V/mm, a linearity of 1.7%, and a detection range of ±0.5 mm. The sensor is applied in a magnetic levitation permanent magnet synchronous motor system. When the motor speed is 20 000 r/min, the high‑speed magnetic levitation rotor still maintains stable operation. The transverse flux displacement sensors developed in this paper can meet the requirements of magnetic suspension motor displacement detection and suspension control, and achieve the control effect of similar products. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology 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 Aeronautical Materials is the property of Editorial Board of Journal of Aeronautical Materials 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.)

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 Inorganic Chemicals Industry is the property of Editorial Office of Inorganic Chemicals Industry 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 Inorganic Chemicals Industry is the property of Editorial Office of Inorganic Chemicals Industry 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 Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology 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 Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology 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 Rolling Stock (1002-7602) is the property of Rolling Stock 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.)

Based on the GlobeLand30 data in 2000, 2010 and 2020, the artificial surface expansion of South Asian countries during 2000-2010 and 2010-2020 was analyzed by using the spatial scanning statistics, landscape expansion index as well as Lorenz curve. By combining the spatial distribution pattern of the artificial surface with evolution process, we investigated the spatio-temporal variation and spatial structure of artificial surface in South Asia. Results showed that: 1) The overall artificial surface area of South Asia continues to expand, with the expansion rate increasing from 0. 42% in 2000-2010 to 2. 59% in 2010-2020. 2) India has seen the largest increase in artificial surface area over the past 20 years, with Bhutan expanding at the fastest rate. In the process of artificial surface expansion in South Asia, there are significant spatial hot spots, and the spatial hot spots migrate at different time periods. 3) In western Pakistan, central Sri Lanka, northwestern Bangladesh, and eastern and southern India, enclave type patches have increased, and the artificial surface shows the characteristics of scattered and disordered diffusion expansion. The new patch types in northern India, eastern Sri Lanka and southeastern Bangladesh shift from enclave type to infilling and edge-expansion type, showing a pattern of change from diffusion to dense aggregation type. 4) The expansion of artificial surface in South Asian countries differs greatly on the scales of cities, which leads to obvious imbalances in the expansion of artificial surface. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Aesthetic & Plastic Surgery is the property of Chinese Journal of Aesthetic & Plastic Surgery 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 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.)

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 Journal of Remote Sensing is the property of Editorial Office of Journal of Remote Sensing & Science Publishing Co. 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 Transactions of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher 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 Engineering Science / Gongcheng Kexue Yu Jishu is the property of Advanced Engineering Science 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 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.)

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 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.)

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 China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher 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 Precious Metals / Guijinshu is the property of Precious Metals 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.)

Straw mulching has been the essential component of conservation tillage to prevent wind-water erosion and degradation of soil, while improving soil fertility and drought resistance. However, a low cleaning rate of straw often occurs in the current passive straw cutting/cleaning for the seed belt in Northeast China. In an active straw cleaner, there is excessive soil disturbance with the mixed burial of straw and soil damage to the moisture, thereby reducing the emergence rate in no-tillage maize seeding. In this study, an active rotating collective straw-cleaner was designed to solve the existing problems in straw mulching for no-tillage agriculture. The straw-cleaner was mainly composed of the spring teeth of straw cleaning, frame of spring teeth, drive motor, adjustment rod of height and inclined angle, adjustment plate of deflection angle, and curtain component. Six spring teeth were included in a straw-cleaner, where the tooth pitch of spring teeth was 60 mm, and the angle to the ground was 45°. The spring teeth were installed on the same rotating plane through the mounting frame. Specifically, the maximum gyration radius of the spring tooth was 200 mm, while the forward inclination angle was 20°, and the adjustment range of the slip angle was 20°-60°. The motor drove the spring tooth during the seeding. The spring tooth first penetrated to the soil from the side of the seeding belt, and then threw the straw to the other side along the tangent direction to the curtain component. A quadratic regression rotation orthogonal test was carried out to determine the optimal parameter combination, where the unit forward speed, the rotate speed, and penetration length of spring tooth were selected as determinants with the cleaning rate of straw as the performance index. A regression model was established for the test indicators and influencing factors of straw cleaning. A soil-bin test showed that the cleaning rate of straw was significantly reduced with the increase of forward speed in the initial stage, but the effect of forward speed on the straw cleaning was weakening with the increase in penetration length of the spring tooth. The forward speed contributed to the further improvement of the cleaning rate till greater than a critical value. The cleaning rate of straw increased first and then decreased as the penetration length of the spring teeth increased. The step distance of a single spring tooth decreased, whereas, the cleaning rate of straw showed a significant increase in the initial stage when the rotate speed of the spring tooth increased. However, the rotate speed of the spring tooth showed a relatively weak effect, even to limit the further improvement of cleaning rate, as the penetration length increased. An optimal combination of parameters was achieved for the best performance of the device in the Design-Expert 10.0.7, where the unit forward speed was 1.4 m/s, the rotate speed was 400 r/min, and the penetration length of the spring tooth was 19 mm. Field experiments demonstrated that the cleaning rate of straw for the 20 cm wide belts was 98.3%, and the working power was 605 W under the optimal combination of parameters, indicating a high agronomic requirement of no-tillage maize seeding in Northeast China. This finding can provide insightful technical support to the straw cleaning device for no-tillage machines. [ABSTRACT FROM AUTHOR]

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 Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal 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 Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal 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.)