A computational framework for tracking grain boundaries in 3D image data: Quantifying boundary curvatures and velocities in polycrystalline materials

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身处病痛和绝望,对儿子的牵挂是他心中最柔软的角落,这份情感最终化作了《牺牲》中近乎宿命的悲戚。影片结尾,小男孩为他和父亲一同栽下的那株枯树浇水,仰头问出全片的最后一句台词:“太初有道。为什么呢,爸爸?”而在片尾的献词中,塔可夫斯基写下祝福:“献给我的儿子安德留什卡,愿他充满信心和希望。”这是一个父亲对儿子的期许,也是一个流亡者留给世界的温柔,被永远定格在银幕之上,也被记录在《殉道学》的文字中。

If you’re looking for an instant camera that offers the most old-fashioned, instant-film experience, the Polaroid Flip is the camera for you. It resembles vintage instant cameras like the Polaroid 600 more than any other camera on our list, thanks to its classic, retro-inspired design and flip-up lid. Its square I-Type film prints and iconic white frame give photos an authentically vintage look, while modern touches like Bluetooth, USB-C charging, and a beginner-friendly companion app add greater convenience and creative control.

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Guar gum, a plant colloid, costs less than agar and is better suited for growing thermophilic bacteria, but is also more difficult to handle, being more viscous and less transparent. The bacterial polysaccharide xanthan is cheaper as well but forms weaker jellies that, as with carrageenan, might result in puncturing its surface. Other colloids, like alginate (from brown seaweed) and gellan gum (from a bacterium), don’t set solely based on temperature and require additives for gelation. These additives might interfere with microbial growth and make the preparation of those jellies less handy than agar plates.,推荐阅读im钱包官方下载获取更多信息

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