相关实验视频

Updated: May 13, 2026

Excitation-Scanning Hyperspectral Imaging Microscopy to Efficiently Discriminate Fluorescence Signals
07:34

Excitation-Scanning Hyperspectral Imaging Microscopy to Efficiently Discriminate Fluorescence Signals

Published on: August 22, 2019

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通过高光谱成像和计算机视觉增强口腔健康诊断:临床数据集研究

Paul Römer1, Jean-Jacques Ponciano2, Katharina Kloster1

  • 1Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg University Mainz, Augustusplatz 2, Mainz, 55131, Germany, 49 1747978980.

JMIR medical informatics
|September 11, 2025
PubMed
概括

这项研究引入了口腔组织内镜超谱成像 (HSI) 的新数据集,使深度学习模型能够准确区分组织类型. 这一进步支持非侵入性诊断和口腔疾病的早期检测.

关键词:
人工智能的人工智能是人工智能.深度学习是一种深度学习.牙科 牙科 牙科 牙科这就是EHSI的意义.内镜 HSI 的内镜 HSI超光谱成像 超光谱成像缺血缺血症是因为缺血.医学成像数据集 医学成像数据集非侵入性诊断是一种非侵入性诊断.口腔健康诊断 口腔健康诊断口腔粘膜 perfusion 是一种口腔粘膜 perfusion 的方法.口腔病理学 口腔病理学口腔状细胞癌的癌症.频谱分析是一种分析.组织分类组织分类.

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Hydroboration-Oxidation of Alkenes03:08

Hydroboration-Oxidation of Alkenes

In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
Preparation of Alcohols via Addition Reactions02:15

Preparation of Alcohols via Addition Reactions

Overview
The acid-catalyzed addition of water to the double bond of alkenes is a large-scale industrial method used to synthesize low-molecular-weight alcohols. An acidic atmosphere is required to allow the hydrogen in the water molecule to act as an electrophile and attack the double bond in an alkene. The addition of a proton to the double bond creates a carbocation intermediate. The proton preferentially bonds to the less substituted end of the double bond to create a more stable carbocation...
Acid-Catalyzed Dehydration of Alcohols to Alkenes02:35

Acid-Catalyzed Dehydration of Alcohols to Alkenes

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Oxidation of Alcohols02:37

Oxidation of Alcohols

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Preparation of Aldehydes and Ketones from Alcohols, Alkenes, and Alkynes01:33

Preparation of Aldehydes and Ketones from Alcohols, Alkenes, and Alkynes

Aldehydes and ketones are prepared from alcohols, alkenes, and alkynes via different reaction pathways. Alcohols are the most commonly used substrates for synthesizing aldehydes and ketones. The conversion of alcohol to aldehyde, which involves the oxidation process, depends on the class of the alcohol used and the strength of the oxidizing agent. For instance, primary alcohol will form an aldehyde when treated with a weak oxidizing agent; however, it gets over-oxidized to a carboxylic acid in...
Reactions of Aldehydes and Ketones: Baeyer–Villiger Oxidation01:22

Reactions of Aldehydes and Ketones: Baeyer–Villiger Oxidation

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