快速的明场/暗场成像 样品放入后15分钟内，即可获得高质量的明场（BF）和环形暗场（ADF）STEM图像。TESCAN TENSOR 配备了创新的用户界面 ExploreTM，避免扫描透射电子显微镜繁琐的调试和校准，简化了用户体验。启动数据采集和分析步骤后，ExploreTM 会自动收集样品的低倍率概览图像，通常大小约为 1x1 毫米或 2x2 毫米。...
We have also obtained the carbon nanotube (CNT) BF-STEM image and it is recognized 0.34nm carbon lattice fringes. On the other hand, DF-STEM can obtain the Z-contrast image. DF-STEM detection system in S-5500 can control the detection angle of the scattered electrons in the sample using...
The research study reported here was conducted to investigate the implementation of integrated STEM lessons within courses that have a single subject science focus. The purpose also included development of a pedagogical theory. This technology-based teaching was conceptualized by school administrators and ...
- 《Stem Cells》 被引量: 171发表: 2009年 Gastric carcinogenesis Cancer Stem CellCarcinogenesisOncogenesisTumorigenesisGastric cancer is the second most common cancer worldwide and the second most common cause of cancer-... I Gomceli,B Demiriz,M Tez - 《World Journal of Gastroenterology》 被引...
STEM课程旨在激发学生的好奇心,点燃创造力,培养他们应对现实世界挑战的技能。通过具有实践性项目驱动探究,学生们在有趣且适合年龄的活动中探索科学、技术、工程和数学,培养了学生的批判性思维、团队合作能力以及对周围世界的深刻理解。课程设置将学生的好奇心...
STEM代表科学(Science)、技术(Technology)、工程(Engineering)和数学(Mathematics)相关学科。由于其独特的人才培养模式和高就业潜力,近几年STEM在全球范围内备受推崇。 STEM教育是美国教育的一个重要特色,它不仅在高等教育中显著体现,还在全美K-12...
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Most of the current stem cell-relevant databases focus on a single level of regulation (mRNA expression) from limited stem cell types; thus, a unifying resource would be of great value to compile the multiple levels of research data available. Here we present a database for this purpose, ...
Brain stemListeria monocytogenesMagnetic resonance imagingRhomboencephalitisListerial rhomboencephalitis is a rare, devastating treatable disease. A previously well... S Workman,M Theal - Canadian Journal of Infectious Diseases 被引量: 3发表: 2016年 Listerial Rhomboencephalitis: Not Just for the Weake...
Hematopoietic stem cells: the paradigmatic tissue-specific stem cell. The recent prospective isolation of a wide variety of somatically derived stem cells has affirmed the notion that homeostatic maintenance of most tissues a... D Bryder,DJ Rossi,IL Weissman - 《American Journal of Pathology》 被...