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大気汚染の影響を測定する

Robert Mendelsohn1, Seung Min Kim2

  • 1Yale School of the Environment, New Haven, CT, USA.

Science (New York, N.Y.)
|November 23, 2023
PubMed
まとめ

石炭火力発電所による大気汚染の減少は 予想以上に死亡率の減少をもたらしました この研究は,よりクリーンなエネルギー源が公衆衛生に与える 重要な恩恵を強調しています.

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Measurement of Air Content in Concrete01:23

Measurement of Air Content in Concrete

Air content measurement in concrete is critical for ensuring structural integrity and durability of concrete structures, especially in environments prone to severe weather conditions. Accurate air content analysis optimizes concrete's resistance to freeze-thaw cycles and enhances its workability and strength. Several methods are standardized under ASTM guidelines to measure the air content in fresh concrete, each suitable for different concrete types and conditions.
The pressure method,...
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