Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Protein-protein Interfaces02:04

Protein-protein Interfaces

14.8K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.8K
Reinforcement01:23

Reinforcement

952
Positive and negative reinforcement are key concepts in operant conditioning, a learning process where the consequences of a behavior affect the likelihood of that behavior being repeated.
Positive reinforcement occurs when a behavior is followed by the presentation of a rewarding stimulus, increasing the frequency of that behavior. For example:
952
Corrosion of Reinforcement01:27

Corrosion of Reinforcement

590
The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
590
Reinforcement Schedules01:24

Reinforcement Schedules

527
Positive reinforcement is a powerful method for teaching new behaviors to both animals and humans. B.F. Skinner demonstrated this with his experiments using rats in a Skinner box. When a rat pressed a lever, it received a food pellet. This immediate reward encouraged the rat to repeat the behavior. This method, where a reward follows every instance of the behavior, is known as continuous reinforcement. It is highly effective for establishing new behaviors quickly.
Once a behavior is learned,...
527
Reinforcements in Concrete01:25

Reinforcements in Concrete

484
Reinforced concrete is a composite material used extensively in construction, combining the compressive strength of concrete with the tensile strength of steel. This synergy is essential as concrete, while excellent at resisting compression, is weak under tension. Steel bars, or rebars, are embedded in the concrete to handle these tensile forces. The choice of steel is strategic; it shares a similar coefficient of thermal expansion with concrete, which ensures uniformity in response to...
484
Fiber Reinforced Concrete01:22

Fiber Reinforced Concrete

423
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
423

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Noble metal intercalation effects on the dehydrogenation of MgH<sub>2</sub>/γ-graphdiyne heterojunctions.

Physical chemistry chemical physics : PCCP·2026
Same author

Materials process informatics-assisted precise particle size control of metal-organic frameworks.

Chemical science·2026
Same author

Sonochemical boron incorporation enhances activity and durability of ruthenium oxide for acidic water oxidation.

Nature communications·2026
Same author

Localized hetero-ion modulation engineering of nickel-based catalysts for electrochemical urea oxidation.

Chemical science·2026
Same author

Modulating Ni-O-V Bridges in NiV-Layered Double Hydroxides Microspheres for Robust Electrocatalytic Coupling of 1,5-Pentanediol Oxidation and Nitrate Reduction.

Angewandte Chemie (International ed. in English)·2026
Same author

Data- and Theory-Guided Design of Dual-Role V-Doped RuO<sub>2</sub> for High-Performance Acidic Oxygen Evolution.

Angewandte Chemie (International ed. in English)·2026

関連する実験動画

Updated: Feb 13, 2026

Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures
10:00

Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures

Published on: August 31, 2017

16.0K

構造強化型LiMnO2キャソードにおけるインターフェース介在のヤーン=テラー効果

Hanghui Liu1,2, Tao Shen1, Xiaohui Zhu3

  • 1School of Materials Science and Engineering,Nanjing University of Science and Technology, Nanjing, 210094, China.

Journal of the American Chemical Society
|February 11, 2026
PubMed
まとめ
この要約は機械生成です。

Jahn-Tellerの歪みを抑制することによって,リチウム・マンガネスに富んだ酸化カトドを安定させるための新しいインターフェイス軌道順序戦略を開発しました. このアプローチは,コバルトフリーバッテリーアプリケーションのサイクル安定性を大幅に高めます.

さらに関連する動画

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
08:03

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight

Published on: May 31, 2022

5.7K
CRISPR-Mediated Reorganization of Chromatin Loop Structure
09:20

CRISPR-Mediated Reorganization of Chromatin Loop Structure

Published on: September 14, 2018

13.1K

関連する実験動画

Last Updated: Feb 13, 2026

Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures
10:00

Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures

Published on: August 31, 2017

16.0K
Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
08:03

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight

Published on: May 31, 2022

5.7K
CRISPR-Mediated Reorganization of Chromatin Loop Structure
09:20

CRISPR-Mediated Reorganization of Chromatin Loop Structure

Published on: September 14, 2018

13.1K

科学分野:

  • マテリアルサイエンス 材料科学
  • 電気化学 電気化学について
  • 固体化学 固体化学

背景:

  • リチウム・マンガネスに富んだ酸化物は,コバルトフリーで有望なカトド材料である.
  • Mn3+イオンの協力的なヤーン=テラー (CJT) 歪みは,その電気化学的性能を制限する.
  • 現在の緩和戦略は,不安定性の電子的起源を完全に解決していません.

研究 の 目的:

  • CJTの歪みを根底から抑制するために,新しいインターフェイス軌道オーダーリングパラダイムを導入する.
  • ノンコリネアヤーン=テラー (JT) オーダー (SLNC-LMO) によるスピネル層のLiMnO2ヘテロ構造の設計と特徴付け.
  • カソドの安定性と性能を向上させるためのこの戦略の有効性を実証する.

主な方法:

  • 非コリネア JT オーダーリングによるスピネル層のLiMnO2ヘテロ構造の構築.
  • 原子解像度のイメージングで,八面体構造を分析する.
  • 電子構造と軌道相互作用を調査するための密度関数理論 (DFT) 計算.
  • 性能を評価するための電気化学サイクル試験.

主要な成果:

  • 原子解像度画像は,SLNC-LMOヘテロ構造におけるほぼ直角のMnO6八面体を確認した.
  • DFTの計算により,SLNC-LMOの軌道の幾何学的な挫折が明らかになり,egの軌道の分裂エネルギーは0.24 eVに減少した (コリネアアナログの1.12 eVに対して).
  • SLNC-LMOカトドは,500サイクル後に100%の容量を保持し,例外的なサイクル安定性を示しました.

結論:

  • インターフェイス軌道順序は,軌道幾何学的な挫折を誘発することによって,CJTの歪みを効果的に抑制します.
  • SLNC-LMOのヘテロ構造は,コリネアアナログと比較して優れた電気化学的安定性を示しています.
  • この研究は,Jahn-Teller活性電極材料の安定化のための実行可能な設計原理としてインターフェイス軌道工学を確立します.