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関連する概念動画

Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

75.5K
Oxidation–Reduction Reactions
75.5K
Block Diagram Reduction01:22

Block Diagram Reduction

552
The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
552
Oxymercuration-Reduction of Alkenes02:36

Oxymercuration-Reduction of Alkenes

9.3K
Oxymercuration–reduction of alkenes is one of the major reactions converting alkenes to alcohols. It involves the hydration of alkenes with mercuric acetate in a mixture of tetrahydrofuran and water, forming an organomercury adduct. This is followed by a demercuration step in which the adduct is reduced to an alcohol using sodium borohydride.
9.3K
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

1.1K
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
1.1K
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

852
Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
852
Phase I Reactions: Reductive Reactions01:27

Phase I Reactions: Reductive Reactions

586
Phase I biotransformation reductive reactions are chemical processes that modify drugs by introducing or revealing polar functional groups via reduction. Enzymes called reductases catalyze these reactions, playing a pivotal role in drug metabolism by transforming lipophilic drugs into more polar, water-soluble metabolites for easy excretion. An essential type of reductive reaction is the carbonyl group reduction, where aldehydes and ketones are reduced to alcohols. An example is the...
586

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関連する実験動画

Updated: Jan 28, 2026

High Resolution 3D Imaging of Ex-Vivo Biological Samples by Micro CT
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光子計数CTにおける冗長サンプリングと自己較正を用いたリングアーチファクト低減

Scott S Hsieh, James Day, Xinchen Deng

    IEEE transactions on medical imaging
    |January 26, 2026
    PubMed
    まとめ

    検出器の自己較正は、2つの冗長な測定値を用いた動的較正により、光子計数CT(PCCT)におけるリングアーチファクトを大幅に低減します。この方法は、高度なCTシステムにおける画質向上のための有望なソリューションを提供します。

    キーワード:
    光子計数検出器CTアーチファクト画像再構成自己較正冗長サンプリング

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