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未认知与不确定性是深空探测任务的基本特征. 本文基于战略导向的体系化基础研究, 建立了一种面向科学价值最大化的探测场景和以可靠性为核心技术基础的深空探测自主运行可信性技术体系. 分析研究了深空探测场景下的可靠性概念; 面向精确感知、最优计算、准确决策、快精准执行的目标要素, 提出了深空探测自主运行的可信性体系框架以及“需求－认知－工程”总体技术架构; 针对自主运行可信性的关键技术难点, 开展了可靠性导向的多物理场、强耦合白盒建模, 复杂网络故障传播机制分析, COTS元器件深空探测应用的高可靠保证, 以及“模型+数据+知识”一体的融合机制分析等研究. 对该技术体系的关键技术验证策略及其最小系统在卫星星座中的应用进行了验证, 结果表明, 所提出的技术体系具有较高的工程价值.

This paper summarized the management of clinical teaching for nursing students in the Department of Cardiothoracic Surgery under the COVID-19 epidemic. By revising a teaching plan for nursing students, new teaching methods such as Wechat platform-based lecture, questionnaire survey, online Conference by Tencent APP were adopted. Course lectures focused on the COVID-19 prevention, common diseases in the Department of Cardiothoracic Surgery, common types of surgery and postoperative nursing. Multiple approaches were provided to improve the nursing students’ awareness on cardiothoracic diseases and key issues of postoperative nursing, and improve the quality of clinical teaching. (总结新型冠状病毒肺炎疫情下心胸外科实习护士临床带教管理策略。通过修订实习护士的培训内容, 新增企业微信授课、调查问卷、腾讯会议等教学方法, 重点讲解新型冠状病毒肺炎疫情下防护知识、心胸外科常见疾病、常见手术方式及术后护理, 提高实习护士对心胸外科疾病的认识, 帮助掌握术后护理常规, 关注实习护士的心理状况, 提升护理教学质量。)

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 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.)

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Copyright of Foundry Technology (1000-8365) is the property of Foundry 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 Chinese Journal of Cancer Biotherapy is the property of Editorial Office of Chinese Journal of Cancer Biotherapy 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 Journal of Chongqing University of Posts & Telecommunications (Natural Science Edition) is the property of Chongqing University of Posts & Telecommunications 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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The well-set immune barrier plays an important role in promoting body health and improving poultry production performance. It is generally accepted that intestinal flora is involved in stimulating the development of the immune system, which in turn shape a well-set immune barrier for the host. While pathogenic bacteria in the gastrointestinal tract of poultry are proliferating due to the prohibition of feeding antibiotics in the postantibiotic era. This is bound to disturb the intestinal flora and break the immune barrier, and the production performance of poultry will be negatively affected resultantly. Hence, it is of great significance to clarify the interaction between intestinal flora and immune function in poultry to guide poultry healthy and efficient breeding. In the present study, the research progress about the regulation of intestinal flora on the immune function in poultry were arranged, which aimed to provide the theoretical reference for the healthy and efficient breeding of poultry. [ABSTRACT FROM AUTHOR]

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【Objective】The study was conducted to clarify the genetic structure characteristics, genetic diversity level and molecular variation of different geographical populations of Conopomorpha sinensis Bradely, with an aim to provide scientific evidence for the study of its origin and evolution and provide reference information for the control of this pest in different regions.【Method】Using the C. sinensis from 5 production areas in southern China as materials, using GBS (Genotyping-by-sequencing) technology was used for samples genotyping, then SNP locus was identified with SAMTOOLS software, and phylogenetic tree was constructed according to SNP genotyping results. Finally, principal component analysis was performed.【Result】Sequencing of C. sinensis from 5 regions was conducted by GBS technology. A total of 27.39 Gb of highquality effective data were obtained, with an average of 5.48 Gb per sample. A total of 11 767 high-quality single nucleotide polymorphism (SNPs) loci were obtained. Phylogenetic tree analysis showed that the genetic relationship of Luzhou population was far from that of other populations. The results of principal component analysis showed that C. sinensis was divided into 2 groups in 5 regions, and the Luzhou population was significantly different from the other 4 populations. Both principal component analysis and phylogenetic tree analysis revealed that there were obvious differences in genetic level among C. sinensis from different geographical origins. The results of genetic diversity analysis showed that the observed heterozygosity was 0.2099-0.2531, the expected heterozygosity was 0.1937-0.2203, π was 0.2495-0.2748, indicating that the genetic diversity level of C. sinensis population was low. The results of AMOVA analysis showed that the genetic variation between populations (0.87%) was smaller than that within populations (99.13%), indicating that the variation mainly came from within populations rather than between populations.【Conclusion】The genetic diversity level of C. sinensis in different geographical populations was low, while the genetic differentiation degree of Luzhou population in Sichuan was high, and its genetic relationship was distant with other populations. [ABSTRACT FROM AUTHOR]

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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.)

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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.)

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近年来, 职业健康风险评估方法的联合应用备受重视。 首先介绍了风险评估法联合应用的验证方式, 其次分 析了联合风险评估法在不同职业病危害因素中的应用现状和作用, 接着阐述了风险评估法平行应用的互补、拼接和 评价 3 种方式, 最后探讨了职业健康风险评估方法与其他方法联合应用的可能性。 未来研究将朝着多学科交叉融 合、基于大数据和人工智能的方向发展, 应用场景将不断优化和扩展, 但风险评估方法的准确性和可靠性等问题仍 需进一步解决 [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Soil & Water Conservation (1009-2242) is the property of Institute of Soil & Water Conservation 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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