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関連する概念動画

Range00:59

Range

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The range is one of the measures of variation. It can be defined as the difference between a dataset's highest and lowest values. For example, in the study of seven 16-ounce soda cans, the filled volume of soda was measured, thus producing the following amount (in ounces) of soda:
15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5
Measurements of the amount of soda in a 16-ounce can vary since different subjects record these measurements or since the exact amount - 16 ounces of liquid, was not...
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Variation: Normal Distribution, Range, and Standard Deviation02:32

Variation: Normal Distribution, Range, and Standard Deviation

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In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
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The Sense of Self: Reflected Self-Appraisal and Social Comparison02:57

The Sense of Self: Reflected Self-Appraisal and Social Comparison

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According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
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¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

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The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
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Introduction to Special Senses01:26

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Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
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Protein Complex Assembly02:41

Protein Complex Assembly

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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
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関連する実験動画

Updated: Feb 7, 2026

Rapid Assembly of Multi-Gene Constructs using Modular Golden Gate Cloning
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ドナー-カルボラン-アクセプター集合体によって可能になった長距離定量的マルチVOC蛍光センシング

Zhaojin Wang1, Hui He1, Jiahui Li1

  • 1Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China.

Analytical chemistry
|February 6, 2026
PubMed
まとめ

新しい小分子センサーは、複数の揮発性有機化合物（VOC）に対して定量的な蛍光センシングを提供します。Cb-NAセンサーは、現在の技術の限界を克服し、さまざまなVOCに対して高い感度と識別能力を示します。

キーワード:
蛍光センサー揮発性有機化合物カルボラン集合体長距離センシング

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関連する実験動画

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科学分野:

  • 材料科学
  • 化学センシング
  • 分析化学

背景:

  • 定量的な蛍光（QF）を用いた複数の揮発性有機化合物（VOC）に対する単一センサーの開発は極めて重要です。
  • 既存のポリマーベースのセンサーは限界に直面しており、小分子センサーの開発は依然として困難です。

研究 の 目的:

  • 集合誘起発光と空間電荷移動（TSCT）の可能性を持つ新規小分子センサーを開発し、マルチVOCセンシングに適用すること。
  • これらのセンサーのさまざまなVOCの検出と識別における性能を評価すること。

主な方法:

  • 3つのドナー-カルボラン-アクセプターセンサー（Cb-FL、Cb-NE、Cb-NA）の合成。
  • センサーを結晶中の中心対称二量体およびフィルム中の集合体に組み立てること。
  • フィルムベースのセンサーで複数のVOCに対する定量的な蛍光（QF）応答をテストすること。

主要な成果:

  • Cb-NAフィルムは、トルエンやアミン類を含む7つの異なる分析物に対して、発光オフ応答を示しました。
  • QF感度は3桁（178 mg/m³-88.93 g/m³）にわたって維持されました。
  • Cb-NAは、速い応答/回復時間（16-60秒/8-15秒）と低い検出限界（178-209 mg/m³）を達成しました。

結論:

  • Cb-NAセンサーは、解離した単一分子におけるTSCTを効果的に利用し、独立した発光消光を実現します。
  • このメカニズムにより、長距離のQF感度と複数のVOCの識別が可能になります。
  • 開発された小分子センサーは、高度なマルチVOC検出アプリケーションに有望です。