If metal detectors are required at courthouses, isn’t it that much more important to have them at all schools? We owe our children a duty to protect them, even the demented ones before they ...

Your home’s first line of defense against fires and smoke are its smoke detectors. These devices pick up on smoke in the air and alert you to its presence. The idea is that the alarm will ...

MIAMI - Starting Tuesday, students at Miami-Dade public schools could be randomly searched using metal detectors. The school district sent letters to parents about the searches, saying they would ...

Australian cricketers Travis Head, Marnus Labuschagne, Mitchell Marsh, Pat Cummins, Usman Khawaja and Josh Hazlewood went through a funny lie detector test. During the test, all the cricketers ...

电子背散射衍射分析技术（EBSD）是一种在扫描电子显微镜（SEM）上应用的重要材料表征技术，它通过分析从样品表面反射回来的高能电子产生的衍射花样来获取晶体微区的取向和结构信息。 自20世纪90年代以来，EBSD技术已经得到了显著发展，并在材料科学领域中 ...

失效模式的分析对于材料科学家和工程师至关重要，因为它有助于理解材料在实际应用中的性能和潜在风险。以下是对失效模式、微观组织分析、EBSD技术及其在失效分析中应用的概述： 失效模式 疲劳断裂：由循环应力引起的断裂。 应力腐蚀开裂：在腐蚀性环境 ...

The world's most sensitive detector of its kind has found no sign of dark matter. New results from the LUX-ZEPLIN detector, announced today at the TeV Particle Astrophysics conference in Chicago ...