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  3. 研究分野
  5. 化学 科学
  7. 物理化学
  9. 反応の触媒とメカニズム
  11. コメントへの返信 "一般的な化学反応中の分子移動性の強化"
  1. ホーム
  3. 研究分野
  5. 化学 科学
  7. 物理化学
  9. 反応の触媒とメカニズム
  11. コメントへの返信 "一般的な化学反応中の分子移動性の強化"

関連する実験動画

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
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Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method

Published on: July 19, 2019

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コメントへの返信 "一般的な化学反応中の分子移動性の強化"

Huan Wang1, Myeonggon Park1,2, Ruoyu Dong1

  • 1Center for Soft and Living Matter, Institute for Basic Science, Ulsan 44919, South Korea.

Science (New York, N.Y.)
|January 15, 2021

PubMed で要約を見る

まとめ
この要約は機械生成です。

磁場グラデーションの配列は 科学的な測定に不可欠です 私たちの研究は ランダム化と線形グラデーションの両方が一貫した結果をもたらし 前の研究の不一致を解決することを確認しています

科学分野:

  • 物理学
  • 磁気共鳴画像検査

背景:

  • 磁場グラデーションの測定の不一致が報告されています.
  • 以前の研究では線形グラデーションが用いられ,対照実験ではランダム化グラデーションが用いられました.

研究 の 目的:

  • 磁場グラデーション測定に関する矛盾した発見を調和させる.
  • 異なるグラデントタイプを用いた測定技術の一貫性を検証する.

主な方法:

  • ランダム化磁場グラデント配列を用いた制御実験の複製.
  • 線形磁場グラデント配列を用いた測定を行う.
  • 実験室での両方の方法から得られたデータの比較分析.

主要な成果:

  • 実験室での測定は ランダム化と 線形磁場グラデーションの 連続性を示しました
  • この結果は,正確な測定のための両方のグラデント方法の有効性を支持しています.

結論:

  • ランダム化磁場グラデント配列の使用が検証されています.
  • この研究は,シーケンスタイプに関係なく,磁場グラデント測定の信頼性を確認し,実験の不一致を解決します.

さらに関連する動画

Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
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Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments

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Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
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Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

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関連する実験動画

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
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Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method

Published on: July 19, 2019

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Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
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Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments

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Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
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Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

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関連する概念動画

Predicting Reaction Outcomes02:24

Predicting Reaction Outcomes

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Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
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Reaction Mechanisms03:06

Reaction Mechanisms

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Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
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Energy Transfer in Chemical Reactions01:16

Energy Transfer in Chemical Reactions

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Chemical reactions require sufficient energy to cause the matter to collide with enough precision and force that old chemical bonds can be broken and new ones formed. In general, kinetic energy is the form of energy powering any type of matter in motion. Imagine a person building a brick wall. The energy it takes to lift and place one brick on top of another is the kinetic energy—the energy matter possesses because of its motion. Once the wall is in place, it stores potential energy.
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Factors Influencing the Rate of Chemical Reactions01:22

Factors Influencing the Rate of Chemical Reactions

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A variety of factors influence the rate of chemical reactions. For a chemical reaction to happen, atoms must collide with enough energy to overcome the repulsion between their electrons. This energy is called activation energy. Factors influencing the rate of reaction either lower the activation energy or increase the likelihood of a successful collision.
Concentration and Pressure:
The more particles present within a given space, the more likely those particles are to bump into one another....
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Chemical Reactions02:26

Chemical Reactions

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A balanced chemical equation provides the information of chemical formulas of the reactants and products involved in the chemical change. A reaction’s stoichiometry helps predict how much of the reactant is needed to produce the desired amount of product, or in some cases, how much product will be formed from a specific amount of the reactant.
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in...
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Chemical Reactions01:19

Chemical Reactions

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A chemical reaction is a process by which the bonds in the atoms of substances are rearranged to generate new substances. Matter cannot be created or destroyed in a chemical reaction—the same type and number of atoms that make up the reactants are still present in the products. Merely, the rearrangement of chemical bonds produces new compounds.
Chemical Reactions Rearrange Atoms into New Substances
A chemical reaction takes starting materials—the reactants—and changes them...
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