Search

遗传算法（GA）是无人艇路径规划系统中的一种有效方法，为了克服该算法易陷入局部最优早熟和收敛速度慢等缺陷，在不增加算法复杂度的前提下，基于数据驱动线性动态交叉策略提出了一种能够在最短时间内自适应动态调整控制参数的改进遗传算法（LCPGA）。与传统的遗传算法相比，LCPGA增加了种群多样性，能更有效地避免陷入局部最优，并提高了路径规划的精度、稳健性和收敛速度。仿真实验和无人艇现场试验验证了该算法具有更优良的性能，该算法可为无人艇路径规划提供一定的应用价值。

By using acrylamide (AM), sodium oxyalgae (OSA) and polydopamine-modified polypyrrole (PDA-PPy) as raw materials, a multifunctional hydrogel PAM/OSA/PDA-PPy (PODY) with adhesion, self-healing and conductivity was prepared. The aldehyde group of OSA reacts with the amino group of AM to form imine bond. Because PDA-PPy carries a large number of catechol groups and conductive groups, it endows hydrogels with good adhesion and conductivity. At the same time, more hydrogen bonds are created inside the hydrogel. The structures of OSA, PDA-PPy and PODY hydrogels were analyzed by Fourier transform infrared spectroscopy, hydrogen nuclear magnetic resonance spectroscopy (1H-NMR) and scanning electron microscopy. Their mechanical properties, adhesion properties, self-healing properties and electrical conductivity were characterized by universal electronic testing machine, rotary rheometer and four-probe tester. Results show that the elongation at break of PODY hydrogel is up to 928%, and the tensile strength is up to 194 kPa. The maximum adhesion strength of the hydrogel on pig skin, glass and plastic is 9.0, 17.6 kPa and 22.8 kPa, respectively, and good adhesion strength is still maintained after three cycles of adhesion. PODY hydrogel can form a stable three-dimensional network and has good self-healing performance. The maximum conductivity of PODY hydrogel is 0.248 S/m. It lays a good foundation for its application in the field of wearable sensing. [ABSTRACT FROM AUTHOR]

Copyright of Micronanoelectronic Technology is the property of Micronanoelectronic 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 Micronanoelectronic Technology is the property of Micronanoelectronic 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 Coatings & Protection / Tuceng yu Fanghu is the property of Coating & Protection 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 Mechanics is the property of Chinese Journal of Applied Mechanics 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 Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation 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 East China University of Science & Technology is the property of Journal of East China University of Science & 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.)

Microbial fermented feed has the advantages of high nutritional value, palatability, high utilization rate and less anti-nutrient factor, which provides a feasible technical scheme for the end 'antibiotic replacement' of animal husbandry feed. In recent years, the development and application of microbial fermented feed has gradually become a research hotspot in the new era of 'no antibiotics'. Microbial fermented feed can improve the immunity and antioxidant properties of animal body, improve intestinal health and promote growth and development. In the paper, the types, advantages and application status of microbial fermented feed in cattle breeding were reviewed in order to provide reference for the research and development of microbial fermented feed. [ABSTRACT FROM AUTHOR]

Copyright of Large Electric Machine & Hydraulic Turbine is the property of Large Electric Machine & Hydraulic Turbine 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 Science Technology & Engineering is the property of Chinese Society of Technology Economics 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 Medical Equipment Journal is the property of Chinese Medical Equipment Journal 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 Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & 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 Journal of Signal Processing is the property of Journal of Signal Processing 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 Engineering 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 Earth Sciences & Environment is the property of Journal of Earth Sciences & Environment 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 探讨给予冠心病搭桥手术患者进行复合式保温护理的效果。方法 选取 2016 年 5 月至 2019 年 5 月在该 院行冠心病搭桥手术患者 196例, 采取随机数字表法将其分为对照组和观察组, 各 98 例。给予对照组常规护理, 观察组在常规护 理基础上, 行复合式保温护理。对比2组不同时间点体温情况、术后观察指标[凝血酶原时间、机械通气时间、重症监护病房 (ICU) 滞留时间]、心血管不良事件发生率。结果 体外循环结束 (t0) 时, 2 组体温比较, 差异无统计学意义 (P >0.05) 。出手术室 后 (t1) 、术后 1 h(t2) 、术后 2 h(t3) , 观察组体温高于对照组;术后 5 h(t4) , 观察组体温低于对照组, 差异均有统计学意义 (P<0.05) ; 观察组凝血酶原时间、机械通气时间、ICU 滞留时间及心血管不良事件发生率均低于对照组, 差异有统计学意义 (P<0.05) 。结论 冠心病搭桥手术患者实施复合式保温护理可降低术后体温变化幅度, 降低心血管不良事件发生率, 有效促进患者预后。 [ABSTRACT FROM AUTHOR]

Objective To discover the potential compounds with lipid-lowering、effect in Chinese medicinal based on PPAR-LXRa-ABCAl pathway by using pharmacophore and molecular docking technology. Methods Firstly, PPARγ and LXRα were selected as search keywords, and the efficacy-identifying models of their agonists were built respectively. The optimal pharmacophore models of PPARγ and LXRα were obtained after validation and evaluation. Traditional Chinese medicine database (TCMD) was selected according to the optimal pharmacophore models. The primary screening compounds were retained based on the Lipinski five rules and Fitvalue. Finally, molecular docking was employed to refine the outcomes of pharmacophore model and analyze the binding mode of protein-ligand. The compounds with higher docking scores and amino acids were retained. Results In this study, the optimal model of PPARγ agonists was built, which contains one hydrogen bond acceptor, one hydrophobic group and two aromatic rings ; The optimal model of LXRα agonists contains two hydrogen bond acceptors,one hydrophobic group and two aromatic rings. Meanwhile, the crystal structure of PPARγ and LXRα built by molecular docking method was used in molecular docking study. According to the pharmacophore and outcomes of Lipinski five rules, there were 22 and 180 compounds obtained respectively. Based on the screening standard of docking studies,the artabotrycinol and hinoki flavone were identified as potential agonists of PPARγ while anomalamide (artemisia annua) and trichosanatine (trichosanthes rosthornii) were identified as potential agonists of LXRα. These potential compounds could play a key role by acting on the corresponding target in PPARγ-LXRα-ABCAl pathway respectively. Conclusion This study provides an efficient method for screening potential agonists of PPARγ and LXRα in TCMD and potential compounds that increase the expression of ABCA1,which could serve as the candidate compounds in the development of new drugs for hyperlipidemia. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan 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.)

目的了解和评价手术室护理人员对手术室职业危险因素的认知现状，为手术室护理人员健康管理及 职业暴露防护提供一定的参考。方法将100 位手术室护理人员分为干预组和对照组。对照组直接进行手术室危险因 素问卷调查。干预组在进行相关知识培训、考核后进行调查。采用综合评价法对手术室护理人员危险因素认知现状进行 评价，并结合评价结果对各项因素进行分析。结果干预组、对照组综合评分指数（GI）分别为10.326 和16.553，干预组 GI 高于对照组。评价过程及权重计算结果合理。干预组与对照组对麻醉药物、带菌患者、特殊患者的知晓情况比较，差 异无统计学意义（P>0.05），对其他调查项目的知晓情况比较差异均具有统计学意义（P<0.05）。结论通过有效的知识 培训可改善手术室护理人员对职业危险因素的认知程度。 [ABSTRACT FROM AUTHOR]