期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
激光斜向照射圆柱状细丝产生的光环现象
1
作者 关国业 黄家坚 林方 《应用物理》 2017年第2期43-53,共11页
将一根圆柱状细铜丝垂直于地面放置,当激光沿细丝所在平面斜向下照射铜丝时,在地面上可观察到一个明亮清晰的光环。本文从理论与实验两个方面分析了激光束入射不透明光滑细铜丝时,在空间中产生的三维锥状光场,得到光环由激光反射与衍射... 将一根圆柱状细铜丝垂直于地面放置,当激光沿细丝所在平面斜向下照射铜丝时,在地面上可观察到一个明亮清晰的光环。本文从理论与实验两个方面分析了激光束入射不透明光滑细铜丝时,在空间中产生的三维锥状光场,得到光环由激光反射与衍射共同形成的结论,并讨论了系统参量对光环形态的影响。此外,本文还对不同结构、粗糙程度与透明度的多种细丝产生的光环形态进行了探究。 展开更多
关键词 光环 细丝 锥状光场 反射 衍射
下载PDF
CShaperApp:Segmenting and analyzing cellular morphologies of the developing Caenorhabditis elegans embryo
2
作者 Jianfeng Cao Lihan Hu +4 位作者 guoye guan Zelin Li Zhongying Zhao Chao Tang Hong Yan 《Quantitative Biology》 CAS CSCD 2024年第3期329-334,共6页
Caenorhabditis elegans has been widely used as a model organism in developmental biology due to its invariant development.In this study,we developed a desktop software CShaperApp to segment fluorescence-labeled images... Caenorhabditis elegans has been widely used as a model organism in developmental biology due to its invariant development.In this study,we developed a desktop software CShaperApp to segment fluorescence-labeled images of cell membranes and analyze cellular morphologies interactively during C.elegans embryogenesis.Based on the previously proposed framework CShaper,CShaperApp empowers biologists to automatically and efficiently extract quantitative cellular morphological data with either an existing deep learning model or a fine-tuned one adapted to their in-house dataset.Experimental results show that it takes about 30 min to process a three-dimensional time-lapse(4D)dataset,which consists of 150 image stacks at a~1.5-min interval and covers C.elegans embryogenesis from the 4-cell to 350-cell stages.The robustness of CShaperApp is also validated with the datasets from different laboratories.Furthermore,modularized implementation increases the flexibility in multi-task applications and promotes its flexibility for future enhancements.As cell morphology over development has emerged as a focus of interest in developmental biology,CShaperApp is anticipated to pave the way for those studies by accelerating the high-throughput generation of systems-level quantitative data collection.The software can be freely downloaded from the website of Github(cao13jf/CShaperApp)and is executable on Windows,macOS,and Linux operating systems. 展开更多
关键词 C.elegans embryogenesis cellular morphology cellular segmentation deep learning desktop software
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部