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関連する概念動画

Radiation: Applications01:17

Radiation: Applications

1.7K
The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
1.7K
Properties of Enantiomers and Optical Activity02:24

Properties of Enantiomers and Optical Activity

21.5K
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
21.5K
Heating and Cooling Curves02:44

Heating and Cooling Curves

27.3K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
27.3K
Biological Effects of Radiation02:59

Biological Effects of Radiation

17.7K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
17.7K
Absorption of Radiation01:05

Absorption of Radiation

1.2K
The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
1.2K
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

6.9K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
6.9K

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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
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アプリケーション駆動型昼間放射冷却：光学特性から機能的カスタマイズまで

Yan Dong1, Zeyu Yang1, Ziming Cheng2

  • 1Department of Thermal Energy and Power Engineering, Yantai University, Yantai 264000, China.

ACS applied materials & interfaces
|January 23, 2026
PubMed
まとめ
この要約は機械生成です。

受動的昼間放射冷却（PDRC）は、エネルギー効率の有望なソリューションを提供します。このレビューでは、普及のためのPDRC材料、用途、課題を詳述します。

キーワード:
機能的製造放射冷却放射伝達実用化太陽エネルギー

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Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model
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Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
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Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
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科学分野:

  • 材料科学
  • 熱力学
  • 持続可能なエネルギー

背景:

  • 受動的昼間放射冷却（PDRC）は、エネルギー入力なしで冷却するための新興技術です。
  • PDRCは、建物のエネルギー効率、再生可能エネルギーシステム、熱管理において可能性を示しています。
  • 現在の研究では、PDRC材料設計と実世界のアプリケーションの需要との間の包括的な関連性が欠けています。

研究 の 目的:

  • PDRC技術の最近の進歩に関する包括的な概要を提供すること。
  • PDRC材料とその多様な用途の性能要件を体系的にレビューすること。
  • 限界を分析し、PDRCの開発戦略を提案すること。

主な方法:

  • PDRCの基本原理についての議論。
  • さまざまなPDRC材料の体系的なレビュー。
  • アプリケーション固有の要件（美的、耐久性、コスト、多機能性）の検討。
  • 建物、農業、エネルギー生成におけるPDRCアプリケーションの分析。

主要な成果:

  • PDRC材料は、さまざまな用途で特定の熱光学および製造可能性の基準を満たす必要があります。
  • 主な要件には、美的統合、環境耐久性、経済的実行可能性、および多機能性があります。
  • PDRCは、建物のエネルギー消費、熱管理、農業、食品保存、エネルギー生成においてその可能性を示しています。

結論:

  • PDRC技術は、実験室での研究から実用的な開発へと大きく進歩しました。
  • PDRCの大規模な採用には、材料設計、特定のアプリケーションのニーズ、および現在の制限に対処することが重要です。
  • このレビューは、将来のPDRCの研究開発に貴重な洞察を提供します。