相关实验视频

Updated: Jan 20, 2026

Conformity: Normative, Informational Influence
01:20

Conformity: Normative, Informational Influence

47.9K

概括

研究人员合成了新的非离子硫化聚,用于研究水中的螺旋线转变. 这些水溶性多提供了一个模型系统,避免带电组干扰和相位分离以进行更清晰的构造分析.

相关概念视频

Conformity01:20

Conformity

Conformity is the change in a person’s behavior to go along with the group, even if that person does not agree with the group.
47.9K
Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
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Differential Scanning Calorimetry — A Method for Assessing the Thermal Stability and Conformation of Protein Antigen08:13

Differential Scanning Calorimetry — A Method for Assessing the Thermal Stability and Conformation of Protein Antigen

Differential scanning calorimetry measures the thermal transition temperature(s) and total heat energy required to denature a protein. Results obtained are used to assess the thermal stability of protein antigens in vaccine...
40.2K
RNA Stability01:53

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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Long-Term Cryopreservation of Cyanobacterial Strains Using Glycerol or Dimethyl Sulfoxide02:35

Long-Term Cryopreservation of Cyanobacterial Strains Using Glycerol or Dimethyl Sulfoxide

Source: Lea-Smith, D. J., et al. Generation of Marked and Markerless Mutants in Model Cyanobacterial Species. J. Vis. Exp. (2016)This video demonstrates the cryopreservation of cyanobacterial strains by combining concentrated cell suspensions with glycerol or DMSO and storing them at low temperatures, enabling long-term maintenance of viable cultures for photosynthesis and genetic...
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Intraosseous Needle Placement09:51

Intraosseous Needle Placement

Source: Julianna Jung, MD, FACEP, Associate Professor of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA
For unstable patients requiring urgent administration of medications, fluids, or blood products, establishing vascular access quickly is essential. However, there are many factors that can complicate placement of a peripheral intravenous cannula (PIV), and it is extremely common for PIV attempts to fail. PIV placement may be technically challenging in...
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