Notice: file_put_contents(): Write of 8130 bytes failed with errno=28 No space left on device in /var/www/group-telegram/post.php on line 50
Solidot | Telegram Webview: solidot/25804 -
Telegram Group & Telegram Channel
人类远古近亲在 150 万年前相遇

2024-12-02 15:28 by 布兰尼肯夫人

大约 150 万年前,两个古老的物种在肯尼亚的一个湖边相遇。他们在泥里的脚印被时间冻结,直到 2021 年才被发现。对这些印痕的分析表明,它们属于直立人,现代人类的祖先,以及更远的近亲波伊塞傍人。两人在几小时或几天内穿过了湖区,留下了不同古人类物种在同一地方共存的第一个直接记录。脚印保存了这些人的细节,包括足弓的高度、脚趾的形状和行走方式。利用基于 3D X 射线的成像技术,研究人员研究了脚的运动是如何塑造它留下的痕迹的。他们将古人类脚印的足弓深度和脚趾角度与人类脚印进行了比较。分析表明,这些孤立的脚印属于直立人个体,直立人被认为是第一个像现代人一样直立行走和奔跑的人类物种。这一物种的脚比较平,大脚趾的位置也在不断变化。与人类的大脚趾相比,它们的大脚趾的活动范围更大,右脚可以向外倾斜 19 度,左脚可以向外倾斜近 16 度,而人类的大脚趾向外伸展约 10 度。

https://www.science.org/doi/10.1126/science.ado5275
https://www.ebiotrade.com/newsf/2024-11/20241129074700480.htm

#科学



group-telegram.com/solidot/25804
Create:
Last Update:

人类远古近亲在 150 万年前相遇

2024-12-02 15:28 by 布兰尼肯夫人

大约 150 万年前,两个古老的物种在肯尼亚的一个湖边相遇。他们在泥里的脚印被时间冻结,直到 2021 年才被发现。对这些印痕的分析表明,它们属于直立人,现代人类的祖先,以及更远的近亲波伊塞傍人。两人在几小时或几天内穿过了湖区,留下了不同古人类物种在同一地方共存的第一个直接记录。脚印保存了这些人的细节,包括足弓的高度、脚趾的形状和行走方式。利用基于 3D X 射线的成像技术,研究人员研究了脚的运动是如何塑造它留下的痕迹的。他们将古人类脚印的足弓深度和脚趾角度与人类脚印进行了比较。分析表明,这些孤立的脚印属于直立人个体,直立人被认为是第一个像现代人一样直立行走和奔跑的人类物种。这一物种的脚比较平,大脚趾的位置也在不断变化。与人类的大脚趾相比,它们的大脚趾的活动范围更大,右脚可以向外倾斜 19 度,左脚可以向外倾斜近 16 度,而人类的大脚趾向外伸展约 10 度。

https://www.science.org/doi/10.1126/science.ado5275
https://www.ebiotrade.com/newsf/2024-11/20241129074700480.htm

#科学

BY Solidot


Warning: Undefined variable $i in /var/www/group-telegram/post.php on line 260

Share with your friend now:
group-telegram.com/solidot/25804

View MORE
Open in Telegram


Telegram | DID YOU KNOW?

Date: |

But Telegram says people want to keep their chat history when they get a new phone, and they like having a data backup that will sync their chats across multiple devices. And that is why they let people choose whether they want their messages to be encrypted or not. When not turned on, though, chats are stored on Telegram's services, which are scattered throughout the world. But it has "disclosed 0 bytes of user data to third parties, including governments," Telegram states on its website. Under the Sebi Act, the regulator has the power to carry out search and seizure of books, registers, documents including electronics and digital devices from any person associated with the securities market. "There is a significant risk of insider threat or hacking of Telegram systems that could expose all of these chats to the Russian government," said Eva Galperin with the Electronic Frontier Foundation, which has called for Telegram to improve its privacy practices. Ukrainian forces successfully attacked Russian vehicles in the capital city of Kyiv thanks to a public tip made through the encrypted messaging app Telegram, Ukraine's top law-enforcement agency said on Tuesday. In February 2014, the Ukrainian people ousted pro-Russian president Viktor Yanukovych, prompting Russia to invade and annex the Crimean peninsula. By the start of April, Pavel Durov had given his notice, with TechCrunch saying at the time that the CEO had resisted pressure to suppress pages criticizing the Russian government.
from es


Telegram Solidot
FROM American