概括
美国一艘最新升级的研究潜水艇现在可以探索全球99%的海底. 这一重大进展增强了科学研究的深海勘探能力.
科学领域:
- 海洋学
- 海洋生物学
- 地质学
背景情况:
- 美国的研究潜艇进行了5000万美元的升级.
- 这次升级旨在显著提高其运营深度和能力.
相关概念视频
01:00The Water Cycle
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The Earth’s hydrosphere includes all of the areas where the storage and movement of water occurs. Since water is the basis of all living processes, the cycling of water is extremely important to ecosystem dynamics.
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03:06Alkali Metals
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Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
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01:25Aquaporins
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Aquaporins or AQPs are a family of integral membrane proteins whose primary function is to transport water, while some called aquaglyceroporins also transport glycerol. In addition, aquaporins have also been suspected to be involved in transporting volatile substances, such as carbon dioxide and ammonia, across membranes. Such AQPs that act as gas channels are often highly expressed in cells involved in the gaseous exchange, such as red blood cells, epithelial cells, and pulmonary capillaries.
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01:12Buoyancy
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01:25Eddy Currents
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Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
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01:11Buoyancy and Stability for Submerged and Floating Bodies
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