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Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality 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.)

Objective To explore the simulation of needle puncture with banana model in the teaching of straight buttonhole technique. Methods The banana model was used to replace the buttonhole of human arteriovenous fistula, 16G steel needle was used for escharectomy and 16G blunt needle was used for puncture. The clinical teaching and training efficacy was evaluated. Results There were 120 nurses attended the training of straight buttonhole technique. After the operation practice, 98. 33% of the nurses have reached the personal goal of this study, and the satisfaction of model demonstration was high(100. 00%). Conclusion Simulation of needle puncture with banana model can assist teaching effectively, help nurses understand the technical essentials, and get better teaching effect. (目的 探讨香蕉模拟穿刺模型应用于动静脉内瘘直行式扣眼穿刺教学中的应用效果。方法 以香蕉代替人体动静脉内瘘模拟扣眼穿刺对120名护士进行教学培训, 评价教学效果。结果 本组护士扣眼穿刺培训的课程评价得分为(53. 9±0. 81)分, 99. 17%的护士对本次教学练习的有效性给予了肯定, 98. 33%的护士认为达到了本次学习的个人目标, 本次动静脉内瘘扣眼穿刺教学的满意度为100. 00%。结论 香蕉模拟穿刺模型能够有效地辅助教学, 帮助护士理解技术要领, 获得较好的教学效果。)

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 South China University of Technology (Natural Science Edition) is the property of South China 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.)

为了降低译码算法复杂度、提高信道传送质量,提出一种改进型低密度奇偶校验译码算法。该算法是以多径瑞利衰落信道仿真模型作为高速移动环境下的信道模型,采用有理函数逼近的思想,降低每次循环时校验节点的运算量,从而降低信道译码算法复杂度。在MATLAB环境下对该算法进行了仿真验证,结果表明,相对于对数似然比置信传播译码算法,改进后的低密度奇偶校验译码算法具有较好的译码性能,更能有效降低译码的复杂度。因此改进译码算法应用在高速移动环境中,可以提高信道传输的质量和效率。

A pneumatic seed metering device is required for the high speed and intelligent variable operation in recent years. However, the existing complicated transmission and pneumatic system and mechanical structure cannot fully meet the largescale production of pneumatic supply with the high stability, due mainly to the pressure loss caused by a curved pipe. In this study, the invention problem problem-solving theory (TRIZ) and axiomatic theory design (AD) methods were applied to carry out the innovative design of a pneumatic seeding device for rapeseed. Firstly, the seeding maturity prediction and evolution were used to clarify the development stage, evolution path, and potential of seed metering using TRIZ technology. The existing seeding technology was in a recession recovery period, while the evolution of the technology system was in line with the Scurve evolutionary law and evolutionary model. The future seed metering device was preferred for the integration in the simple, microscopic, controllable, and automated evolutionary path. Secondly, the design process model was established using the integration of TRIZ and AD. TRIZ tools were introduced in the process of mapping functional to structural domains. Among them, the "conflict resolution principles" was adopted to solve the contradiction and conflicts of the transmission and pneumatic systems in the existing seed metering device. The invention principles were selected to optimize the structural parameters. Finally, the motor was utilized to directly drive the seeding disk and the built-in air chamber of the fan. The original design matrix was developed using independent design axioms and the minimum entropy. An innovative system was designed to integrate the motor- fan with the pneumatic seed metering device for rape. The trial production and processing were performed on two technical implementation schemes. The motor fan was determined to arrange on the same side after optimization, particularly for the better airtightness and structural stability. The integrated motor drive was used to simplify the transmission, whereas, the integrated fan was to eliminate the gas transmission pipe, in order to reduce the wind pressure loss. As such, the improved transmission and pneumatic system were required only a small space without the additional power. The test results show that the integrated seed metering device was fully meetmet the requirements of single seed metering. A better performance was achieved in the qualified index is more than 90%, even reached reaching up to 99.82%, when the absolute value of suction negative pressure was 1.0-2.0 kPa and the working speed was less than 7 km/h. The required pressure for the qualified index of 90% was lower than before. The innovative design of the pneumatic seed metering device was integrated the power and pneumatic sources, which was were in the line with the technological system evolution path, individual start and stop of the seeding unit without any influence on the rows. More importantly, the mechanical structure and transmission were better matched for the development trend of intelligent variables. This finding can provide an innovative design idea and references for the design of a pneumatic seed device. [ABSTRACT FROM AUTHOR]

Seed metering can be widely used to deliver the seeds or fertilizers from the hopper at selected rates during planting. However, it is still lacking in the quantitative and comprehensive analysis of the current technology of seed metering devices. In this study, a metrological analysis was systematically conducted on the existing literature on seed metering technology, in order to visualize the research trend, in terms of scientific research productivity, influence, and development power. The development of seeding technology was also summarized from the hot topics in recent years. The agricultural products were introduced from the domestic and foreign advanced agricultural machinery enterprises using frontier seed arrangement technology. Finally, the development trend was proposed from the industrialization application at present. The results showed that the seed metering technology was developed in a high-speed steady state. Much more scientific research output and influence in China were close to that in the United States. The high-impact journals included the Biosystems Engineering, Computers and Electronics in Agriculture, Journal of Agricultural Machinery, and Journal of Agricultural Engineering. High-impact scholars and institutions were focused on the seed metering technology for the typical crops in different regions. As such, the seed metering technology was advanced to upgrade the mechanization level. The development trend of seed metering technology was gradually changed from single-topic research on the realization of functions into the in-depth exploration of vertical subdivision topics, such as mechanism optimization, mechanism analysis, and virtual simulation. The current research hotspots of seed metering technology were focused mainly on high-speed simultaneous seeding, seeding uniformity, DEM-CFD coupling simulation, control, and monitoring system. In addition, the high efficiency and performance equipment can be expected to be further developed in the application of seed metering technology, particularly for the new products of seed metering in the running stage. Emerging technologies, interdisciplinary integration, and innovative thinking can be applied to develop with high speed, performance, precise, digital, and intelligent aspects. This review can provide a strong reference to grasp the research status, development trend, and innovation of seeding machines. [ABSTRACT FROM AUTHOR]

Copyright of Journal of South China University of Technology (Natural Science Edition) is the property of South China 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 Chengdu University (Social Science) is the property of Journal of Chengdu University (Social 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 Clinical Hepatology / Linchuang Gandanbing Zazhi is the property of Journal of Clinical Hepatology 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.)

Laminaria japonica polysaccharide is a kind of green and safe plant feed additive, which does not produce toxic and side effects on body, and has antibacterial, antioxidant and other regulatory effects. Laminaria japonica polysaccharide can improve the intestinal health of pigs and has a positive impact on pig production. The article mainly reviews the effects of Laminaria japonica polysaccharides on pig intestinal morphology, intestinal flora balance, antioxidant activity, tight junction protein expression, immune function, and nutrient digestion and absorption capacity. In order to provide a reference for the application of Laminaria japonica polysaccharide in swine production. [ABSTRACT FROM AUTHOR]

Copyright of Acta Prataculturae Sinica is the property of Acta Prataculturae 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 Acta Prataculturae Sinica is the property of Acta Prataculturae 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 Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality 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 Food Safety & Quality is the property of Journal of Food Safety & Quality 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 Food Safety & Quality is the property of Journal of Food Safety & Quality 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 Food Research & Development is the property of Food Research & Development 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 Food Research & Development is the property of Food Research & Development 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 Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University 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 Food Research & Development is the property of Food Research & Development 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.)