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関連する概念動画

Conduct Disorder01:28

Conduct Disorder

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Conduct disorder is a complex mental health diagnosis characterized by a repetitive and persistent pattern of behavior that violates societal norms, the rights of others, or age-appropriate rules. The diagnostic criteria for conduct disorder require the presence of at least three problematic behaviors within the past 12 months, with at least one occurring in the past six months. These behaviors are grouped into four categories: aggression toward people and animals; destruction of property;...
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Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
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The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
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関連する実験動画

Updated: Feb 12, 2026

Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method EFM
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量子化されたマジョラーナ伝導

Hao Zhang1, Chun-Xiao Liu2, Sasa Gazibegovic3

  • 1QuTech and Kavli Institute of NanoScience, Delft University of Technology, 2600 GA Delft, The Netherlands.

Nature
|March 29, 2018
PubMed
まとめ

研究者は2e2/hの量子伝導率高原を観測し,トポロジカル量子コンピューティングのマイオラナゼロモードを確認した. この発見は以前の実験の限界を克服し 将来の編み物実験をサポートします

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関連する実験動画

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科学分野:

  • 凝縮物質物理学
  • 量子コンピューティング
  • 材料科学

背景:

  • トポロジカル・量子コンピューティングの 準粒子は有望です
  • トンネリングスペクトロスコピーは,差電導度におけるゼロバイアスのピークを介して,マジョラーナゼロモードを識別する.
  • ゼロバイアスのピークを2e2/hに定量化することは,マジョラーナ対称性によって予測されるが,めったに観測されない.

研究 の 目的:

  • 実験的にマイオラナゼロモードの存在を 量子導電性で検証する
  • 様々な実験パラメータに対してゼロバイアスのピークの強さを調査する.

主な方法:

  • インジウムアンチモナイド半導体ナノワイヤーを使用し,アルミニウム超伝導シェルでコーティングされています.
  • ゼロバイアスの伝導性のピークを観察するために電気輸送測定を行う.
  • 導電性のピークの高さ,磁場とトンネル結合の安定性,そして温度依存性を分析する.

主要な成果:

  • ゼロバイアスの導電性では2e2/hで量子導電性高原が観測された.
  • 磁場とトンネル結合の変動にもかかわらずピークの高さは一定でした.
  • 量子化されたピークは 電気と磁場と温度変動に対して 頑丈であることが示されました

結論:

  • 観測された量子導電性高原は,マイオラナのゼロモードの存在を強く支持する.
  • この発見は理論的な予測を検証し,以前の実験的な課題を克服しました.
  • この結果は,トポロジカル量子コンピューティングの発展に 基礎を築いた.