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関連する概念動画

Calculation of Electric Flux01:25

Calculation of Electric Flux

Consider the electric field of an oppositely charged, parallel-plate system and an imaginary box between those plates. Let the bottom face of the box be ABCD, and the top face be FGHK. The electric field between the plates is uniform and points from the positive plate toward the negative plate. The calculation of this field's flux through the box's various faces shows that the net flux through the box is zero. Why does the flux cancel out here?
Electrical Current01:10

Electrical Current

Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836). An ampere is the...
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
The Delta-to-Delta Circuit01:17

The Delta-to-Delta Circuit

In a delta-delta configuration, the source and the load are connected in a delta manner, forming a closed loop that divides the network into three distinct phases. This configuration makes the phase voltages identical to line voltages. Assuming the sources are in positive sequence, the phase voltages can be expressed directly without having a neutral wire.
Control of Power Flow01:30

Control of Power Flow

There are several methods to control power flow in power systems:
Power System Three-Phase Short Circuits01:21

Power System Three-Phase Short Circuits

Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...

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関連する実験動画

Updated: Jul 5, 2026

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1
09:00

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1

Published on: April 16, 2018

人工イオンチャネルは,修正電流の振る舞いを示しています.

C Goto1, M Yamamura, A Satake

  • 1CREST, Japan Science and Technology Corporation (JST), Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0101, Japan.

Journal of the American Chemical Society
|December 6, 2001
PubMed
まとめ
この要約は機械生成です。

研究者らは,電圧依存整合を示す新しい人工イオンチャネル (3および4) を開発した. これらの合成チャネルは,生体模倣チャネル設計の重要なステップである,適用電圧に基づいてイオンフローの方向を制御する可能性を示しています.

さらに関連する動画

Interactive and Visualized Online Experimentation System for Engineering Education and Research
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Interactive and Visualized Online Experimentation System for Engineering Education and Research

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High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
05:11

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

関連する実験動画

Last Updated: Jul 5, 2026

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1
09:00

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1

Published on: April 16, 2018

Interactive and Visualized Online Experimentation System for Engineering Education and Research
08:35

Interactive and Visualized Online Experimentation System for Engineering Education and Research

Published on: November 24, 2021

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
05:11

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

科学分野:

  • 超分子化学 超分子化学
  • マテリアルサイエンス 材料科学
  • バイオミメティックエンジニアリング

背景:

  • 人工イオンチャネルは,生物学的輸送を理解し,合成システムを開発するために不可欠です.
  • 自然界にある電圧依存のイオンチャネルは,細胞機能に不可欠な性質である補正を示す.
  • 制御された補正による合成チャネルの設計は,超分子化学における重要な課題です.

研究 の 目的:

  • 新しい電圧依存の人工イオンチャネル (化合物3と4) を合成する.
  • これらの合成分子のイオンチャネル特性,特に整形を調査する.
  • 端末ヘッドグループ電荷と電圧誘発の整合が,整正を達成する上で果たす役割を調査する.

主な方法:

  • 2つのコリック酸誘導体 (3および4) の合成で,それぞれ異なるヒドロフィール端末群 (カルボキシル酸,リン酸) がある.
  • 合成されたチャネルを平面二層脂質膜に組み込む.
  • 単一イオンチャネル特性の測定は,平面二層脂質膜法を使用して,異なるpHと適用電圧下で測定されます.

主要な成果:

  • 合成された人工イオンチャネル3と4は,電流-電圧プロットで明確な補正特性を示した.
  • 修正方向は,電圧の適用方法 (正または負のシフトの組み込み) によって制御可能でした.
  • 組み込み中の電圧によって誘発される端末ヘッドグループ電荷のベクトル整列は,電圧依存矯正に不可欠であると特定されました.

結論:

  • 電圧依存整合を示す新しい人工イオンチャネルが成功裏に合成されました.
  • この研究は,機能的な人工イオンチャネルを設計するために,端末群の方向と負荷を制御することの重要性を強調しています.
  • これらの発見は,調節可能な性質を持つ洗練された合成イオン輸送システムの開発に寄与します.