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相关概念视频

Coagulation01:06

Coagulation

334
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
334
Colloidal precipitates01:09

Colloidal precipitates

629
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
629
Ion Exchange01:17

Ion Exchange

625
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
625
Factors Affecting Solubility04:01

Factors Affecting Solubility

33.6K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
33.6K
Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

1.9K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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Updated: Jul 25, 2025

Preparation of Neuronal Co-cultures with Single Cell Precision
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使用聚离子合溶液作为灌的增强爆米花.

Daniel G Wong1, Alexander Shiang2, Adam Ostergar2

  • 1Division of Urological Surgery, Department of Surgery, Washington University in St Louis School of Medicine, 4960 Children's Place, Campus Box 8242, St. Louis, MO, 63110, USA. d.g.wong@wustl.edu.

Urolithiasis
|June 23, 2023
PubMed
概括
此摘要是机器生成的。

同时用酸盐或EDTA等多离子溶液进行灌,可显著增强激光石灰管石头的切除效果. 这种方法有望通过减少剩余的石头质量来改善内镜石头去除.

关键词:
化 化 化酸的使用方法艾迪塔 (EDTA) 是一个叫做EDTA的语言.石质三症是一种精神病.

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科学领域:

  • 泌尿器科 泌尿器科 泌尿器科 泌尿器科
  • 生物化学 生物化学
  • 医疗工程 医疗工程

背景情况:

  • 多阳离子化合物可以结合二价和溶解氧酸盐石头.
  • 在激光石术期间优化石头切除率对于有效的石头切除至关重要.

研究的目的:

  • 为了评估在激光石化术期间用聚离子合溶液灌对石材剥离效率的影响.
  • 在爆米花模型中,比较酸盐和乙烯基二胺四酸 (EDTA) 与化和六甲酸盐的有效性.

主要方法:

  • 使用尿管望远镜和电纤维激光器使用的爆米花模型被采用.
  • 贝戈石被用激光灌处理,使用异溶液:0.9%的NaCl,酸,六甲和EDTA.
  • 剩余的石头碎片>1毫米被权衡以确定废弃效率.

主要成果:

  • 用0.9%的NaCl灌导致剩余的石质量为27.8%.
  • 与NaCl.Cl.相比,酸盐和EDTA灌使剩余的石质分别减少了37% (17.5%) 和64.7% (9.8%),相比之下,酸盐和EDTA灌使剩余的石质减少了37% (17.5%) 和64.7% (9.8%).
  • EDTA在石头剥离疗效方面表现出了最显著的改善.

结论:

  • 同时用酸或EDTA灌,在体外爆米花模型中协同增强激光石灰管疗效.
  • 这些发现表明,可以改善内镜石头去除的结果.
  • 需要对不同类型的石头和临床应用中的安全性进行进一步的研究.