传统煮鸡蛋的方法有两种：在 100 摄氏度的沸水中硬煮，但这会导致蛋黄完全凝固；通过真空低温烹调，在 60 到 70 摄氏度下慢慢炖煮一小时，但这会让蛋白不够熟。科学家现在报告了一种被称为“周期性烹饪”的新方法。它不仅让每一颗煮鸡蛋都能达到完美的均匀熟度，还能提升其营养成分。科学家利用计算流体动力学软件模拟出了这种全新的煮蛋过程：将鸡蛋在 100 摄氏度的沸水和 30 摄氏度的冷水中交替浸泡，每两分钟转移一次，总共持续 32 分钟。在这段时间里，蛋白逐渐变得细腻而富有弹性，蛋黄则保持了奶油般的柔软质感。经过处理后蛋黄中的多酚含量显著增加，这是一种被认为对健康非常有益的微量营养素。 Guardian：Scientists crack what they say is the perfect way to boil an egg 科技日报：如何煮出熟度均匀的鸡蛋？
传统煮鸡蛋的方法有两种：在 100 摄氏度的沸水中硬煮，但这会导致蛋黄完全凝固；通过真空低温烹调，在 60 到 70 摄氏度下慢慢炖煮一小时，但这会让蛋白不够熟。科学家现在报告了一种被称为“周期性烹饪”的新方法。它不仅让每一颗煮鸡蛋都能达到完美的均匀熟度，还能提升其营养成分。科学家利用计算流体动力学软件模拟出了这种全新的煮蛋过程：将鸡蛋在 100 摄氏度的沸水和 30 摄氏度的冷水中交替浸泡，每两分钟转移一次，总共持续 32 分钟。在这段时间里，蛋白逐渐变得细腻而富有弹性，蛋黄则保持了奶油般的柔软质感。经过处理后蛋黄中的多酚含量显著增加，这是一种被认为对健康非常有益的微量营养素。 Guardian：Scientists crack what they say is the perfect way to boil an egg 科技日报：如何煮出熟度均匀的鸡蛋？
BY Solidot 纯净版
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Secure video calling is in high demand. As an alternative to Zoom, many people are using end-to-end encrypted apps such as WhatsApp, FaceTime or Signal to speak to friends and family face-to-face since coronavirus lockdowns started to take place across the world. There’s another option—secure communications app Telegram just added video calling to its feature set, available on both iOS and Android. The new feature is also super secure—like Signal and WhatsApp and unlike Zoom (yet), video calls will be end-to-end encrypted.
What is Telegram?
Telegram’s stand out feature is its encryption scheme that keeps messages and media secure in transit. The scheme is known as MTProto and is based on 256-bit AES encryption, RSA encryption, and Diffie-Hellman key exchange. The result of this complicated and technical-sounding jargon? A messaging service that claims to keep your data safe.Why do we say claims? When dealing with security, you always want to leave room for scrutiny, and a few cryptography experts have criticized the system. Overall, any level of encryption is better than none, but a level of discretion should always be observed with any online connected system, even Telegram.
