関連する実験動画

Updated: Jul 27, 2025

Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains
06:18

Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains

Published on: November 30, 2021

3.9K

この絶滅したヒトは 最初の墓穴掘り手であり 芸術家だったのでしょうか?

Ann Gibbons

    Science (New York, N.Y.)
    |June 8, 2023
    PubMed
    まとめ

    新しいホモ・ナレディの化石が発見され 人類学者は興奮しています しかし,意図的な埋葬とこれらのヒト類に関連した芸術の主張は,懐疑的である.

    さらに関連する動画

    Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts07:56

    Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

    Published on: January 29, 2018

    17.6K
    Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping09:41

    Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

    Published on: April 21, 2023

    1.7K

    関連する概念動画

    Bone Markings01:26

    Bone Markings

    Bones have various surface features that help form joints and attach to other soft tissues. Depending on the function, bone markings are categorized into articulating projections, processes for attachment, depressions, and openings.
    Articulating Projections
    Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
    5.5K
    Stone Masonry01:29

    Stone Masonry

    Stone masonry is a construction technique that uses individual stones to build structures and can be categorized into two main types: rubble and ashlar. Rubble masonry uses uneven, naturally shaped stones such as river rocks or fragments from quarries. This method often requires the mason to select and possibly shape each stone to fit the designated space, ensuring a proper build, even with irregular stone sizes and shapes. Ashlar masonry, on the other hand, employs uniformly cut stones that...
    135
    Quarrying of Stone01:15

    Quarrying of Stone

    Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
    One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the...
    146
    Necrosis01:16

    Necrosis

    Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
    Morphological Manifestations of Necrosis
    Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
    4.6K
    Gravitation01:16

    Gravitation

    In the years before Newton, a general belief prevailed that different laws governed objects in the sky than objects on Earth. When Kepler wrote down the three laws of planetary motion, explaining in detail the geometrical properties of the planetary orbits around the Sun, there was no immediate idea to discern their connection with more fundamental laws. It was Isaac Newton who, in 1665–66, figured out the connection between planetary motion, the motion of the moon around the Earth, and...
    6.5K
    Bone Remodeling01:40

    Bone Remodeling

    Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
    38.4K