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関連する概念動画

Temperature Dependent Deformation01:12

Temperature Dependent Deformation

191
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
191
Hydration of Cement01:24

Hydration of Cement

380
Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
380
Dehydration of Aldols to Enones: Acid-Catalyzed Aldol Condensation00:43

Dehydration of Aldols to Enones: Acid-Catalyzed Aldol Condensation

2.4K
As shown in Figure 1, under acidic conditions, the β-hydroxy ketone undergoes dehydration via an E1 elimination reaction to form an enone.
2.4K
Aqueous Solutions and Heats of Hydration02:42

Aqueous Solutions and Heats of Hydration

15.0K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
15.0K
Specific Gravity of Aggregate01:19

Specific Gravity of Aggregate

381
Aggregates typically contain pores, which can be either permeable or impermeable. Considering the pores in the aggregates, the specific gravity of aggregates is defined in three different forms, namely, bulk or gross specific gravity, apparent specific gravity, and absolute specific gravity.
Bulk or gross specific gravity is calculated by taking the ratio of the mass of aggregates in the saturated surface-dry state to the total volume that includes both the solids and the voids within the...
381
Constant Pressure Calorimetry03:02

Constant Pressure Calorimetry

86.3K
Calorimetry is a technique used to measure the amount of heat involved in a chemical or physical process or to measure the heat transferred to or from a substance. The heat is exchanged with a calibrated and insulated device called the calorimeter. Calorimetry experiments are based on the assumption that there is no heat exchange between the insulated calorimeter and the external environment. The well-insulated calorimeters prevent the transfer of heat between the calorimeter and its external...
86.3K

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関連する実験動画

Updated: Sep 10, 2025

High-pressure, High-temperature Deformation Experiment Using the New Generation Griggs-type Apparatus
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High-pressure, High-temperature Deformation Experiment Using the New Generation Griggs-type Apparatus

Published on: April 3, 2018

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高圧実験におけるアンチゴライト変形と脱水の結合

Lisa Eberhard1, Mattia Luca Mazzucchelli2, Stefan Markus Schmalholz2

  • 1Department of Earth Sciences, Utrecht University, Utrecht, The Netherlands.

Contributions to mineralogy and petrology. Beitrage zur Mineralogie und Petrologie
|August 27, 2025
PubMed
まとめ
この要約は機械生成です。

温度や組成ではなく 変形がスブドクションゾーンで アンチゴライトの脱水を引き起こします ストレスの濃度は局所的にアンチゴライトの内部エネルギーを増加させ,液体の放出を可能にし,地球化学的および地球物理的プロセスに影響を与えます.

キーワード:
変形するグリグスの実験水力 - 機械 - 化学 HMC カップリング機械作業の速度反応運動蛇口の脱水

さらに関連する動画

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction
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Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction

Published on: May 20, 2018

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Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions
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Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

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関連する実験動画

Last Updated: Sep 10, 2025

High-pressure, High-temperature Deformation Experiment Using the New Generation Griggs-type Apparatus
12:30

High-pressure, High-temperature Deformation Experiment Using the New Generation Griggs-type Apparatus

Published on: April 3, 2018

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Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction
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Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction

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Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions
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Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

Published on: June 13, 2015

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科学分野:

  • 地化学
  • 地理学
  • 鉱物物理学

背景:

  • アンチゴライトの脱水は,地球化学的および地球物理的プロセスに影響を与える,潜水地帯における重要な反応である.
  • アンチゴライトの脱水の原因を理解することは,潜水地帯のダイナミクスをモデル化するために不可欠です.

研究 の 目的:

  • アンチゴライト脱水の原因を調べる
  • アンチゴライトから流体が放出される化学的,物理的なパラメータを特定する.
  • アンチゴライト脱水における変形の役割を決定する.

主な方法:

  • アンチゴライト・サーペンチナイトの水立と同軸のグリッグス実験
  • 高圧と高温での実験 (1.5 GPa, 620 670 °C)
  • ランプロダクトの分析と数値シミュレーションは,反応運動と機械的な作業速度を組み合わせます.

主要な成果:

  • アンチゴライトの脱水は,変形したサンプルに限定された.
  • ナノサイズのオリヴィンとオルトピロキセンは 斜めの脱水帯で形成されます
  • 変形による脱水は数値シミュレーションによって支持された.
  • ストレスの濃度は局所的にアンチゴライトの内部エネルギーを増加させ,脱水を可能にします.

結論:

  • 変形は,鉱物学的または化学的な異質性または温度グラデーションではなく,アンチゴライト脱水の主な要因です.
  • アンチゴライト脱水を理解するには,結合された機械的および化学的プロセスが不可欠です.
  • この研究は,サブダクションゾーンにおける変形誘発のアンチゴライト脱水のためのメカニズム的枠組みを提供します.