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

Diffusion01:12

Diffusion

Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
Diffusion01:21

Diffusion

Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...
Facilitated Diffusion01:16

Facilitated Diffusion

The plasma membrane, a critical structure in cellular biology, houses an array of transporters, or carrier proteins, interspersed within its lipid bilayer. These proteins play a crucial role in solute transport through facilitated diffusion, a form of passive diffusion that uses transporters to move the molecules across the membrane.
In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...
Protein Diffusion in the Membrane01:24

Protein Diffusion in the Membrane

Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
Passive Diffusion: Overview and Kinetics01:17

Passive Diffusion: Overview and Kinetics

Passive diffusion is a critical process that allows small lipophilic drugs to cross the cell membrane along a concentration gradient. This mechanism's efficiency depends on four primary factors: the membrane's surface area, the drug's lipid-water partition coefficient, the concentration gradient, and the membrane's thickness.
When administered orally, drugs establish a substantial concentration gradient between the gastrointestinal (GI) lumen and the bloodstream, expediting their diffusion into...
Fungal Phylum Microsporidia01:28

Fungal Phylum Microsporidia

Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...

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

Peer influence on West Point cadets' Civil War allegiances.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Bridging the empathy perception gap fosters social connection.

Nature human behaviour·2025
Same author

Welfare optimization for resource allocation with peer effects.

PNAS nexus·2025
Same author

Using large language models to categorize strategic situations and decipher motivations behind human behaviors.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

A Linear Mn<sub>3</sub> Molecular Cluster as a Bifunctional Electrocatalyst for Overall Water Splitting.

Inorganic chemistry·2025
Same author

Children's arithmetic skills do not transfer between applied and academic mathematics.

Nature·2025
Same journal

A native sulfur deposit in Gale crater, Mars.

Science (New York, N.Y.)·2026
Same journal

Coordinated demise of harmful algal blooms.

Science (New York, N.Y.)·2026
Same journal

Genetic effects put into context.

Science (New York, N.Y.)·2026
Same journal

Bacteria share proteins to survive antibiotics.

Science (New York, N.Y.)·2026
Same journal

Impacts shaped Earth's first continents.

Science (New York, N.Y.)·2026
Same journal

Erratum for the Report "Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity" by C. Jia <i>et al</i>.

Science (New York, N.Y.)·2026
関連記事をすべて見る

関連する実験動画

Updated: May 9, 2026

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
15:10

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

Published on: October 9, 2014

マイクロファイナンスの普及

Abhijit Banerjee1, Arun G Chandrasekhar, Esther Duflo

  • 1Department of Economics, Massachusetts Institute of Technology, Cambridge, MA 02142, USA. banerjee@mit.edu

Science (New York, N.Y.)
|July 27, 2013
PubMed
まとめ
この要約は機械生成です。

効果的な初期参加者,またはインジェクションポイントの選択は,口コミの拡散を通じて新しい製品の採用を大幅に促進します. 中心的度合いは,ソーシャルネットワークにおける村レベルの参加の成功を正確に予測します.

さらに関連する動画

Rapid Fabrication of Custom Microfluidic Devices for Research and Educational Applications
05:33

Rapid Fabrication of Custom Microfluidic Devices for Research and Educational Applications

Published on: November 20, 2019

関連する実験動画

Last Updated: May 9, 2026

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
15:10

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

Published on: October 9, 2014

Rapid Fabrication of Custom Microfluidic Devices for Research and Educational Applications
05:33

Rapid Fabrication of Custom Microfluidic Devices for Research and Educational Applications

Published on: November 20, 2019

科学分野:

  • 社会科学 社会科学とは
  • 経済学 経済学
  • ネットワーク分析 ネットワーク分析

背景:

  • 新しい製品やサービスの普及を理解することは,市場への浸透に不可欠です.
  • 口コミコミュニケーションは,ソーシャルネットワークの影響を受け,採用に重要な役割を果たしています.
  • 最適な初期採用者 (注射点) を特定することで,拡散を加速することができます.

研究 の 目的:

  • 口コミの拡散をモデル化し,注射点選択の影響を評価する.
  • 情報の流れと,ソーシャルネットワークにおける直接的な影響力を区別する.
  • 情報拡散における参加者と非参加者の役割を評価する.

主な方法:

  • 口コミの拡散モデルを開発した.
  • このモデルをソーシャルネットワークのデータと,インドの村でマイクロファイナンスの融資プログラムへの参加に適用した.
  • 注射点の有効性のための2つの新しい措置を提案し,利用しました.
  • 参加の予測因子としての注射点の中心性を分析した.

主要な成果:

  • 参加者は,情報のある非参加者よりも7倍も情報を共有する傾向があります.
  • 非参加者からの情報は,参加者全体の約3分の1を占めています.
  • 情報のある家庭の参加は,情報のある友人の参加によって直接に影響されない.
  • 注入点の中心性は,村レベルでの参加の強い予測因子です.

結論:

  • 最初の注射点の選択は,新製品の拡散の成功に大きく影響します.
  • 参加者と非参加者の両者の情報共有は不可欠ですが,参加者はより活発です.
  • ネットワークの中央性の測定は,採用を最大化するために効果的な注入点を特定するための信頼できる方法を提供します.