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A correlative workflow combining cryo-electron microscopy and cryo-electron tomography with secondary ion mass spectrometry generates spatially registered chemical maps from the same vitrified sample, ...

National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

本文系统阐述基于OPC UA（统一架构）的跨平台设备互联互通与数据采集方案。从工业现场设备通信的多样性和复杂性出发，分析OPC UA的技术优势和应用价值。重点介绍OPC UA的信息建模、通信机制、安全机制和跨平台实现等核心技术，并结合实际工业应用案例，展示OPC UA如何打破设备通信壁垒，实现生产数据的无缝采集和集成。 现代智能工厂中，生产现场部署了来自不同厂家、不同年代和不同通信协议的设备，包括 ...