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Transformation01:26

Transformation

Microbial communities are dynamic environments where cell lysis releases free DNA into the surroundings. Other cells can take up this extracellular DNA through a process known as transformation.When a cell incorporates this foreign DNA into its genome, resulting in genetic modification, the process is known as transformation. Cells capable of this process are termed competent. Competence can be natural, as observed in certain bacteria and archaea, or artificially induced in the...
The First Law of Thermodynamics01:13

The First Law of Thermodynamics

The first law of thermodynamics deals with the total amount of energy in the universe. It states that this total amount of energy is constant. In other words, there has always been, and always will be, exactly the same amount of energy in the universe. Energy exists in many different forms. According to the first law of thermodynamics, energy may transfer from place to place or transform into different forms, but it cannot be created or destroyed. The transfers and transformations of energy...
Forced Transdifferentiation01:28

Forced Transdifferentiation

Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial transdifferentiation occurs...
Information Processing Approach01:30

Information Processing Approach

The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is also...
Transformations of Functions III01:20

Transformations of Functions III

Transformations modify the graphical representation of a function without changing its fundamental form. One common transformation is reflection, which flips the graph across a designated axis. When the vertical coordinates of all points are multiplied by the negative one, the entire graph is mirrored over the horizontal axis. This transformation reverses the vertical orientation of peaks and troughs, akin to signal inversion in electrical systems, where a waveform is flipped, but the timing of...
Social Foundations of Self IV: Self in Digital Communication01:30

Social Foundations of Self IV: Self in Digital Communication

Since the early 2000s, computer-mediated communication (CMC) has grown rapidly, playing a crucial role in self-development. A key distinction between CMC and real-life interactions is the lack of a physically present partner. This absence makes non-verbal cues such as facial expressions, body language, and paralinguistic signals unavailable in CMC platforms like email, instant messaging, or social media. The lack of these cues can create ambiguity and complicate how feedback is interpreted.The...

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相关实验视频

Updated: Jul 12, 2026

Morphology-Based Distinction Between Healthy and Pathological Cells Utilizing Fourier Transforms and Self-Organizing Maps
08:59

Morphology-Based Distinction Between Healthy and Pathological Cells Utilizing Fourier Transforms and Self-Organizing Maps

Published on: October 28, 2018

自我组织,转型和信息化.

H T Odum

    Science (New York, N.Y.)
    |November 25, 1988
    PubMed
    概括

    生态系统使用脉冲能量流,引入变形来测量能量类型. 这种新的能源指标为从经济到环境政策的各种应用提供了基于科学的价值体系.

    科学领域:

    • 生态生态学 生态生态学
    • 系统科学 系统科学
    • 能源学 能源学

    背景情况:

    • 生态系统和自我组织系统表现出能量使用模式,其特点是脉冲的生产和消费.
    • 生态食物链能源学为重新定义工作和能源测量提供了洞察力.
    • 提出了一个新的量,变形,以区分和缩放不同类型的能量.

    研究的目的:

    • 引入和定义变形性作为能量缩放的新科学量.
    • 在理解包括信息在内的普遍层次结构中探索变形的应用.
    • 建立一个以科学为基础的价值体系,利用转型为社会和经济应用.

    主要方法:

    • 对生态食物链能量学的分析.
    • 变形的定义和量化 (一种类型的能量需要另一个类型的单位).
    • 计算整个生物圈的太阳转变,从太阳阳照射到信息.

    主要成果:

    • 变形提供了适用于通用层次结构的能量缩放因子.
    • 生物圈中的太阳变换范围从1 (太阳辐射) 到万亿 (共享信息).
    • 将资源贡献乘以它们的变换率,就产生了科学基础的价值.

    更多相关视频

    Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors
    10:44

    Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors

    Published on: January 31, 2025

    相关实验视频

    Last Updated: Jul 12, 2026

    Morphology-Based Distinction Between Healthy and Pathological Cells Utilizing Fourier Transforms and Self-Organizing Maps
    08:59

    Morphology-Based Distinction Between Healthy and Pathological Cells Utilizing Fourier Transforms and Self-Organizing Maps

    Published on: October 28, 2018

    Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors
    10:44

    Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors

    Published on: January 31, 2025

    结论:

    • 转型为量化和比较各种能源形式提供了一种新的方法.
    • 变形度量可用于建立基于科学的价值体系.
    • 这种价值体系对人类服务,环境缓解,贸易,政策和经济活力产生影响.