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Updated: Feb 1, 2026

PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS
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PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS

Published on: December 27, 2013

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通过自然和磁性循环二极化光谱仪监测维生素B12的从基离型转换为基离型

Ewa Machalska1,2, Giuseppe Mazzeo1, Aleksandra J Wierzba3

  • 1Department of Molecular and Translational Medicine, Università di Brescia, Via Europa 11, 25123 Brescia, Italy.

Analytical chemistry
|January 30, 2026
PubMed
概括

这项研究引入了一种联合磁性和电子圆形二元化 (MCD/ECD) 方法,用于分析包括维生素B12在内的可巴胺 (Cbls). 这种方法可以快速而灵敏地区分不同的Cbl形式,这对于理解它们的生物作用至关重要.

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A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay

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相关概念视频

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Ions as Acids and Bases

Salts with Acidic Ions
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
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Vitamins

Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced...
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Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
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Lewis Acids and Bases

In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
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