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边缘智能是人工智能（AI）技术与边缘计算的结合，能满足行业数字化在实时业务、数据优化和应用智能等方面的关键需求。文章开创性地提出了边缘智能2.0的概念，以此为基础设计并搭建了基于开源框架的工业互联网平台，并引入了云网融合、云边协同与边边协作的理念，达到云、网、边、端4位一体的协同。将边缘智能应用到表面贴装技术（SMT）生产线，通过数据建模与分析和优化制程参数，以实现制造企业的降本减存与提质增效。

光正交频分复用（O-OFDM）技术是目前正在研究的热点技术之一。O-OFDM技术应用在光网络中可以有效地提高系统抵抗色散及偏振模色散等效应的能力,从而改善网络的性能。文章阐述了O-OFDM技术的原理,介绍了将O-OFDM技术应用在光骨干传输网中及光接入网中的研究现状,并对该技术的发展趋势以及应用前景做出了展望。

【目的】改进体外成肌细胞培养方法。【方法】取20 只小鼠分4 组, 取股骨肌用肌块法进行成肌细胞原代培养, 并重复利用肌块6 次。对培养的成肌细胞进行生长状态观察及免疫的组化鉴定。【结果】重复6 次使用肌块培养的成肌细胞 生长、分化良好;一次差速贴壁纯化后, 经免疫组化方法鉴定, 96 %以上的细胞呈肌细胞特异抗体阳性反应。【结论】重复肌块

【目的】建立Duchenne 型肌营养不良鼠(mdx 鼠)的骨髓移植模型, 摸索有效的放疗剂量。【方法】用体外培养的 不同数量的C57BL/6 雄鼠的骨髓细胞、骨髓基质细胞、骨髓悬浮细胞, 用不同方法移植给不同剂量放疗后的mdx 鼠, 观察受 体鼠的存活率及存活时间, 并对死亡鼠作GVHD(移植物抗宿主病)的病理学检测。【结果】16 只mdx 鼠移植前3 d 12 Gy γ 射线照射, 在移植后7 d 内全部死亡, 且注射细胞数较多者, 存活时间相对较长;8 只经6 Gy γ射线照射的mdx 鼠, 移植后60 d , 存活4 只, 其中1 例经腹腔注射骨髓细胞、1 例肌肉局部注射骨髓细胞, 移植后7 d 内死亡;而8 Gy γ射线照射的14 只mdx 鼠, 移植后60 d 10 例存活, 4 例死亡。【结论】本实验条件下, 移植前8 Gy γ射线放疗较合理, 在有效剂量放疗破坏受体骨髓 造血系统后, 静脉注射移植同种鼠的骨髓细胞、基质细胞、悬浮细胞, mdx 鼠存活率较高, 且移植细胞数量以1 ×107 个/ 只鼠为 佳。

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Relations between crystal type, particle size and mechanical sensitivities of dihydroxylammonium 5,5’-bistetrazole-1,1’-diolate (HATO) made by different production methods were analysized. Results showed that impact sensitivities of HATO flake-like is higher, but friction sensitivity of HATO with different morphology and particle size is similar on statistics.HATO by milling process possesses higher impact sensitivity and lower friction sensitivity than before. HATO mixture with ETPE has higher impact sensitivity and higher friction sensitivity than pure HATO. Graphite lowers HATO’s impact sensitivity and friction sensitivity significantly.Loading density, gap between impact columns, and explosive’s friction factor influence production of “hot spot”,thus influence explosive’s impact sensitivity. Evaluating mechanical sensitivities with current equipments is limited, and novel equipment should be designed to evaluate explosive’s real mechanical sensitivities. [ABSTRACT FROM AUTHOR]

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