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电力巡检无人机提供大量的巡检图像，但由于电力设备故障稀少，其中只有少量的设备缺陷故障图像可供使用。为了提高设备缺陷故障识别精度并减少训练过拟合问题，首先介绍了基于迁移学习的小样本电力巡检图像处理方法，通过图像裁剪、翻转、旋转等数据增强技术对小样本图像进行扩充，同时采用生成对抗网络（GAN）来扩充基础样本；并使用迁移学习技术，将基于大规模图像数据的预训练深度卷积模型进行定制，调整该神经网络模型的输入层和最后两层参数，并对超参进行调优。实验结果表明，巡检设备故障（如导线断股和绝缘子串脱落等）准确匹配度近95%，证明了小样本学习和迁移学习在输电线路巡检图像处理中具有可行性。

【目的】研究布托啡诺在临床使用剂量范围内通过抑制ABCB1的转运功能增加白血病耐药细胞的化 疗药物敏感性。【方法】采用HL60及其ABCB1过表达的耐药细胞株HL60/VCR、K562及其ABCB1过表达的耐药 细胞株K562/ADR 均在培养环境中加入含胎牛血清的DMEM 或RPMI-1640的培养液中进行培养。采用MTT法 检测布托啡诺的细胞毒性，通过流式细胞仪检测阿霉素（DOX）在HL60/VCR细胞内的累积程度；加入布托啡诺 培养72 h后用免疫荧光观察ABCB1在细胞膜表面的形态和分布变化以及采用Western Blotting检测ABCB1的表达 水平。【结果】布托啡诺能将K562/ADR细胞的阿霉素的抵抗倍数由48.1倍下降到9.6倍，长春新碱（VCR）的抵抗倍 数由108.4倍下降到20.7倍，HL60/VCR的DOX的抵抗倍数由37.8倍下降到7.6倍，长春新碱抵抗倍数由23.4下降 到4.8倍，差异均有统计学意义。ABCB1的表达水平及其在细胞膜上的定位没有变化。【结论】布托啡诺明显降低 阿霉素和长春新碱在ABCB1过表达的白血病耐药细胞株中的IC50，有效增加阿霉素在HL60/VCR细胞内的累积水 平。布托啡诺不改变HL60/VCR和K562/ADR细胞ABCB1的表达水平和ABCB1在细胞膜表面的形态和定位。

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 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 China Rural Water & Hydropower is the property of China Rural Water & Hydropower 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 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.)

At present, in the research of Chinese text emotion analysis, the method based on semantic rules and emotion dictionary usually needs to set the emotional threshold manually. However, the method based on deep learning can’t fully extract emotional features because it fails to use language knowledge such as semantic rules and emotional dictionary. As to shortcomings of two methods, a text emotion analysis method combining language knowledge and deep learning was proposed. Firstly, the key emotional segments in the text were extracted according to the semantic rules. Secondly, more explicit emotion words were extracted from the key emotional segments according to the emotional dictionary to construct the emotion set. Thirdly, the deep level features were extracted from the original text, key emotional segments and emotional set by using the deep learning model. Finally, the features were weighted and fused, and the classifier was used to judge the emotional polarity. The experimental results show that compared with the deep learning model without language knowledge, this method has significantly improved the ability of emotional polarity classification. [ABSTRACT FROM AUTHOR]

Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower 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 make the rapid and large-scale propagation of fast-growing varieties of Pinus elliottii, the induction and proliferation of embryogenic callus were studied. The immature zygotic embryos (with endosperm) of ten P. elliottii families were used to systematically study the effects of different factors on the induction efficiency of embryogenic callus, including genotype, the developmental stage of zygotic embryos, basic medium, types and concentrations of plant growth regulator ( PGR) . At the same time, the proliferation conditions of embryogenic callus were discussed. The esults were as follows: The genotype, the developmental stage of zygotic embryos, basic medium and types and concentrations of plant growth regulator (PGR) all had different degrees of influence on the induction of embryogenic callus. Embryogenic callus were induced in all ten genotypes, of which the induction rate of Genotype 2 was the highest, reaching 25.37%; In the stage of zygotic embryo development, the induction rate of cones at the multiple embryo stage was the highest; Among the four basic media, the induction effect on DCR basic medium was the best; The induction rate of 2,4-D 2.0 mg L+KT 2.5 mg L-1 was the highest, reached 27.78%. The proliferation of embryogenie callus for P. elliottii was achieved on DCR medium, supplemented with 2,4-D (0.5 mg L-1), KT (1.0 mg - L-1), CH (500 mg L) and Gin (300 mg L-1). This study laid a foundation for further developing mature embryo induction and plant regeneration of fast-growing varieties of P. elliottii. [ABSTRACT FROM AUTHOR]