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関連する概念動画

The Sense of Self: Reflected Self-Appraisal and Social Comparison02:57

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

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...
Self-Evaluation Maintenance Model01:29

Self-Evaluation Maintenance Model

The Self-Evaluation Maintenance (SEM) model offers a psychological framework to understand how individuals’ self-esteem is influenced by the achievements of others, particularly those with whom they share close personal bonds. The SEM model operates when personal rather than social identity guides individuals. Central to this model is the notion that individuals have an inherent desire to preserve a favorable self-image, which is continuously shaped by interpersonal comparisons and...
Sources of Self-Esteem III: Social Comparison01:27

Sources of Self-Esteem III: Social Comparison

Social comparison plays a fundamental role in the evaluation of personal success and self-worth. Rather than assessing our achievements in isolation, we interpret their significance relative to personal goals and critically in comparison to the performance of others. A grade of B in a mathematics exam might elicit pride if one's expectation was a C, yet result in disappointment if an A was anticipated or if peers achieved superior results. These comparative evaluations illustrate how both...
Protecting Self-Esteem01:27

Protecting Self-Esteem

Self-esteem, a central component of psychological well-being, is actively maintained through various cognitive and behavioral strategies. Individuals employ specific mechanisms to preserve a positive self-concept and mitigate threats to their self-worth, particularly in contexts involving social evaluation or personal feedback. Four primary techniques are commonly used to sustain self-esteem.Manipulating AppraisalsOne prominent strategy involves manipulating appraisals from others. Individuals...
Self-Serving Bias01:29

Self-Serving Bias

Self-serving bias is a cognitive phenomenon in which individuals attribute positive outcomes to internal factors such as their abilities, intelligence, or effort while attributing negative outcomes to external circumstances. This cognitive distortion helps maintain self-esteem but can also impede objective self-assessment.Theoretical Explanations of Self-Serving BiasTwo primary theories explain the self-serving bias: the cognitive explanation and the motivational explanation.The cognitive...
Increasing Function01:18

Increasing Function

An increasing function exhibits a rise in output values as input values increase. This behavior is depicted graphically as a curve or line that slopes upward from left to right. Such a function satisfies the condition that if x1 < x2, then f(x1) < f(x2), indicating that the function values grow with increasing inputs. This concept is fundamental in understanding growth trends across various domains, such as population dynamics, financial investments, or resource consumption.The average...

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Updated: Jul 5, 2026

Digital PCR-based Competitive Index for High-throughput Analysis of Fitness in Salmonella
07:11

Digital PCR-based Competitive Index for High-throughput Analysis of Fitness in Salmonella

Published on: May 13, 2019

自己複製ペプチドで指数関数的な成長に近づいている.

Roy Issac1, Jean Chmielewski

  • 1Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA.

Journal of the American Chemical Society
|June 13, 2002
PubMed
まとめ

研究者は,コイル・コイルの安定性を制御することによって,高効率の自己複製ペプチドを開発しました. この画期的な発見は,酵素のような効率を達成することによって,生命の研究と技術的なアプリケーションの分子起源を前進させます.

科学分野:

  • バイオケミストリー バイオケミストリー
  • 生命の起源 研究 研究 生命の起源
  • ペプチド化学 ペプチド化学

背景:

  • 自己複製ペプチド系は,技術の発展と生命の起源の理解の可能性を秘めている.
  • 自己複製化合物の高効率を達成することは,大きな課題でした.

研究 の 目的:

  • 高効率の自己複製ペプチドシステムを開発する.
  • ペプチドの自己複製効率におけるコイル・コイル安定性の役割を調査する.

主な方法:

  • ペプチド配列におけるコイル・コイル安定性の調節.
  • 自己複製のための最適な長さを決定するためにペプチドの体系的な縮小.
  • 触媒効率と背景反応速度の評価.

主要な成果:

  • コイル・コイルの安定性を調節する戦略により,驚くべき自己複製効率が得られました.
  • ペプチドを巻き巻きの形成に必要な最小限まで短縮することで,背景反応が最小限に抑えられました.
  • 最適化されたシステムは,自然酵素に近い触媒効率を示した.

結論:

  • 回転回転の安定性は,効率的なペプチド自己複製のための重要な要因です.

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Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion

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Digital PCR-based Competitive Index for High-throughput Analysis of Fitness in Salmonella
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Digital PCR-based Competitive Index for High-throughput Analysis of Fitness in Salmonella

Published on: May 13, 2019

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach
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Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach

Published on: July 3, 2020

Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion
09:23

Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion

Published on: April 2, 2020

  • この研究は,高度に効率的な人工自己複製システムへの道筋を提供します.
  • この発見は,生命の分子起源に関する根本的な疑問に寄与しています.