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相关概念视频

Cognitive Dissonance01:38

Cognitive Dissonance

36.8K
Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
36.8K
Self-Presentation: Self-Monitoring and Self-Handicapping02:05

Self-Presentation: Self-Monitoring and Self-Handicapping

43.4K
People can go to great lengths to protect their self-image and present themselves in ways that they want others to see them. Sociologist Erving Goffman presented the idea that a person is like an actor on a stage. Calling his theory dramaturgy, Goffman believed that we use “impression management” to present ourselves to others as we hope to be perceived. Each situation is a new scene, and individuals perform different roles depending on who is present (Goffman, 1959). Think about...
43.4K
Frustration and Conflict: Avoidance-Avoidance, Double-Approach Avoidance01:14

Frustration and Conflict: Avoidance-Avoidance, Double-Approach Avoidance

555
Avoidance-avoidance conflict refers to a psychological situation where a person must choose between two or more unpleasant alternatives. These conflicts are particularly stressful because neither option is desirable. This dilemma is often expressed in sayings like "caught between a rock and a hard place" or "between the devil and the deep blue sea." For instance, individuals who fear dental procedures may find themselves torn between enduring a painful toothache or facing the...
555
Groupthink01:34

Groupthink

48.9K
When in group settings, we are often influenced by the thoughts, feelings, and behaviors around us. Groupthink is another phenomenon of conformity where modification of the opinions of members in a group aligns with what they believe is the group consensus (Janis, 1972). In such situations, the group often takes action that individuals would not perform outside the group setting because groups make more extreme decisions than individuals do. Moreover, groupthink can hinder opposing trains of...
48.9K
Hypothesis: Accept or Fail to Reject?01:17

Hypothesis: Accept or Fail to Reject?

29.3K
The outcome of any hypothesis testing leads to rejecting or not rejecting the null hypothesis. This decision is taken based on the analysis of the data, an appropriate test statistic, an appropriate confidence level, the critical values, and P-values. However, when the evidence suggests that the null hypothesis cannot be rejected, is it right to say, 'Accept' the null hypothesis?
There are two ways to indicate that the null hypothesis is not rejected. 'Accept' the null...
29.3K
Framing Effects03:26

Framing Effects

7.8K
Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in...
7.8K

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Deserts, Rivers, Pools, and Billabongs: Water Features of the Nitrogenase Proteins, and their Functions.

Chembiochem : a European journal of chemical biology·2025
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The mechanism of nitrogenase: formation and release of the second NH<sub>3</sub> and completion of the cycle.

Dalton transactions (Cambridge, England : 2003)·2025
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Understanding non-reducible N<sub>2</sub> in the mechanism of Mo-nitrogenase.

Dalton transactions (Cambridge, England : 2003)·2025
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The mechanism of Mo-nitrogenase: from N<sub>2</sub> capture to first release of NH<sub>3</sub>.

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The activating capture of N<sub>2</sub> at the active site of Mo-nitrogenase.

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What triggers the coupling of proton transfer and electron transfer at the active site of nitrogenase?

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相关实验视频

Updated: Jan 10, 2026

Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making
11:51

Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making

Published on: March 2, 2011

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S 2B 是不是 2B?

Ian Dance1

  • 1School of Chemistry, UNSW Sydney, NSW 2052, Australia. i.dance@unsw.edu.au.

Dalton transactions (Cambridge, England : 2003)
|November 27, 2025
PubMed
概括

这种酶是化酶.

科学领域:

  • 生物化学 生物化学
  • 酶学 是一种酶学.
  • 计算化学计算化学

背景情况:

  • 酶酶复合物催化了的固定.
  • 铁-辅因子 (FeMo-co) 是酶活性的核心.
  • 关于S2B原子在催化过程中的FeMo-co中的作用,存在一个关键的辩论.

研究的目的:

  • 解决有关酶催化过程中S2B原子在FeMo-co中的位置的机制困境.
  • 评估破坏性与保守性酶机制的证据.

主要方法:

  • 现有实验数据的审查和综合.
  • 对酶机制的计算调查的分析.

主要成果:

  • 实验数据表明,S2B原子可能被移位以允许基质结合.
  • 计算研究提出了一个S2B保留和必不可少的机制.
  • 提出的破坏性和保守性机制之间存在冲突.

结论:

  • 在酶研究中,S2B原子在FeMo-co中的作用仍然是一个关键问题.
  • 需要进一步的研究,以确定S2B是否在酶的功能过程中被取代或保留.

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