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関連する概念動画

Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

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Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
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Stratified Sampling Method01:16

Stratified Sampling Method

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Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
To choose a stratified sample, divide the population into groups called strata and then take a...
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Organic Compounds03:02

Organic Compounds

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All living things are formed mostly of carbon compounds called organic compounds. The category of organic compounds includes both natural and synthetic compounds that contain carbon. Although a single, precise definition has yet to be identified by the chemistry community, most agree that a defining trait of organic molecules is the presence of carbon as the principal element, bonded to hydrogen and other carbon atoms. However, some carbon-containing compounds such as carbonates, cyanides, and...
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Bonding in Metals02:32

Bonding in Metals

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Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
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Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
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Alkali Metals03:06

Alkali Metals

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Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
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多変量層メタル・オーガニック・フレームワーク:ドメイン・ビルディング・ブロックを用いた多様化

Tian-Yi Luo, Chong Liu, Xing Yee Gan

    Journal of the American Chemical Society
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    まとめ

    ドメインビルディングブロック (DBB) は,多様で複雑な金属有機フレームワーク (MOF) を可能にします. このアプローチにより,多変量MOFと調節可能な性質を持つ層化されたMOF (sMOF) が生成され,リンク器交換などの課題を克服します.

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    科学分野:

    • 材料科学
    • 化学について
    • ナノテクノロジー

    背景:

    • メタル・オーガニック・フレームワーク (MOF) は,調節可能な多孔性と機能性を提供します.
    • 現在のMOF合成は 構造的な多様性と複雑性が限られていることが多い.
    • MOF内の組成の異質性を制御することは依然として大きな課題です.

    研究 の 目的:

    • MOF設計のためのドメインビルディングブロック (DBB) を導入します.
    • マルチ変数型および層型MOF (sMOF) を作成するための戦略を策定する.
    • リンカー交換効果を調査し,SMOFにおける緩和戦略を提案する.

    主な方法:

    • DBBのアプローチの概念化と適用
    • UiO-67のsMOF粒子を同心的なDBBで合成する.
    • sMOF構造の合成後の改変と特徴付け
    • sMOF-ナノ粒子複合材料の準備

    主要な成果:

    • DBB を通して,小さな分子構成要素が,多変量MOF の巨大なライブラリを生成することを実証した.
    • 複数の同心型DBBを持つUiO-67sMOFを成功裏に構築した.
    • DBBの完全性に対するリンク交換の有害な影響を特定し,効果的な緩和戦略を提案した.
    • SMOF内の個々の層を選択的に取り扱って操作する能力を示しました.
    • 合成アプローチの汎用性を強調する 製造されたsMOF-ナノ粒子複合材料

    結論:

    • DBBのアプローチは,MOFの多様性と複雑性を高めるための強力な戦略です.
    • UiO-67sMOFは,制御されたDBB配列と組成で精密に設計することができます.
    • 個々の層の合成後の改変は実行可能であり,カスタマイズされた機能性を可能にします.
    • 開発された方法は,高度なMOF材料と複合材料を作成するための多用途の経路を提供します.