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相关概念视频

X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...
Deep Sea Microbial Ecology01:18

Deep Sea Microbial Ecology

The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches extending beyond...

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相关实验视频

Updated: Jul 11, 2026

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
06:04

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

探测深层大陆地的结构.

J Oliver

    Science (New York, N.Y.)
    |May 14, 1982
    PubMed
    概括

    探索地球深层大陆地,主要由古老的,变形的结晶岩石组成,是地球科学的关键前沿. 像地震反射分析和深度钻探这样的技术对于了解这个鲜为人知的地区至关重要.

    科学领域:

    • 地质地质地质地质地质地
    • 地质物理学 地质物理学
    • 地球科学 地球科学 地球科学

    背景情况:

    • 大陆地厚约40公里,主要由古老的,变形的晶状岩石组成.
    • 这种深层地的部分仍未得到充分探索,在现代地球科学中代表着一个重要的前沿.
    • 工业开发的技术为深层大陆地的科学探索提供了潜力.

    研究的目的:

    • 突出探索深层大陆地的重要性.
    • 引入地震反射分析和深度钻探作为主要的勘探方法.
    • 讨论这些方法在推进基本地质理解方面的潜力.

    主要方法:

    • 地震反射分析,由大陆反射分析联盟 (COCORP) 使用.
    • 在大陆地的晶状岩石中进行深度钻探.
    • 利用行业开发的技术进行科学地质研究.

    主要成果:

    • 地震分析提供了在深层地中广泛的薄皮推进的证据.
    • 这种推进与海洋盆地和大陆边缘动态的关闭有关.
    • 深度钻探,虽然在美国的利用较少,但在其他地方正在进行科学目的.

    结论:

    更多相关视频

    Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
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    Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt

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    Atom Probe Tomography Analysis of Exsolved Mineral Phases
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    Atom Probe Tomography Analysis of Exsolved Mineral Phases

    Published on: October 25, 2019

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    Simulation of the Planetary Interior Differentiation Processes in the Laboratory
    06:04

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    Published on: November 15, 2013

    Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
    07:58

    Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt

    Published on: August 7, 2017

    Atom Probe Tomography Analysis of Exsolved Mineral Phases
    08:14

    Atom Probe Tomography Analysis of Exsolved Mineral Phases

    Published on: October 25, 2019

    • 探索深层大陆地对于推进地球科学至关重要.
    • 地震反射和深度钻探是这项勘探的重要技术.
    • 大规模的科学努力 ("大科学") 将在基础地质学中变得越来越重要.