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相关概念视频

Olfaction01:25

Olfaction

48.1K
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
48.1K
Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

12.3K
Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
The olfactory...
12.3K
Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

11.2K
The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
11.2K
Autoxidation of Ethers to Peroxides and Hydroperoxides02:23

Autoxidation of Ethers to Peroxides and Hydroperoxides

9.4K
Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.
9.4K

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相关实验视频

Updated: Jan 16, 2026

Real-time In Vitro Monitoring of Odorant Receptor Activation by an Odorant in the Vapor Phase
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Real-time In Vitro Monitoring of Odorant Receptor Activation by an Odorant in the Vapor Phase

Published on: April 23, 2019

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基于气味的个人认证.

Wataru Tanaka1, Chaiyanut Jirayupat1,2, Haruka Honda1

  • 1Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan. wtanaka@g.ecc.u-tokyo.ac.jp.

Chemical communications (Cambridge, England)
|October 1, 2025
PubMed
概括

人类气味提供了一种安全的生物识别身份验证方法,与指纹或面部扫描不同. 这种基于化学的识别本身很难伪造,为先进的个人安全铺平了道路.

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Olfactory Context Dependent Memory: Direct Presentation of Odorants
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Olfactory Context Dependent Memory: Direct Presentation of Odorants

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A Free-breathing fMRI Method to Study Human Olfactory Function
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A Free-breathing fMRI Method to Study Human Olfactory Function

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Real-time In Vitro Monitoring of Odorant Receptor Activation by an Odorant in the Vapor Phase

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Olfactory Context Dependent Memory: Direct Presentation of Odorants
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Olfactory Context Dependent Memory: Direct Presentation of Odorants

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A Free-breathing fMRI Method to Study Human Olfactory Function
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科学领域:

  • 生物识别信息 生物识别信息
  • 分析化学 分析化学
  • 人类识别 人类识别

背景情况:

  • 传统的生物识别技术,如指纹和面部识别,由于潜在的盗窃和重复,面临安全挑战.
  • 人类气味的独特化学特征,特别是挥发性有机化合物 (VOC),提供了更安全,更难伪造的替代品.
  • 对安全和用户友好的身份验证方法的日益增长的需求需要探索新的生物识别模式.

研究的目的:

  • 提供基于人类气味的个人认证的全面审查.
  • 探索皮肤和呼吸气味在非侵入性个人识别方面的潜力.
  • 检查实施基于气味的认证系统的可行性.

主要方法:

  • 关于人类气味成分和起源的科学文献的综述.
  • 测量技术的分析,包括狗嗅觉,气色谱-质谱 (GC-MS) 和气体传感器阵列.
  • 讨论基于气味的生物识别系统的挑战和解决方案.

主要成果:

  • 人类的气味特征,特别是来自皮肤和呼吸的气味特征是独一无二的,可以非侵入性地收集.
  • 测量和分析气味VOC存在各种技术,每个都有特定的优势.
  • 在系统实施方面仍然存在重大挑战,但正在开发潜在的解决方案.

结论:

  • 基于人类气味的认证是一种有希望的,安全的,非侵入性的生物识别技术.
  • 需要进一步的研究和开发来克服实施挑战.
  • 气味生物识别为传统的识别方法提供了强大的替代方案.