相关实验视频
Updated: Jul 10, 2026
12:02
Molecular Evolution of the Tre Recombinase
Published on: May 29, 2008
概括
这篇论文纠正了1950年关于红外敏感膜光导性的研究中的错误. 这些修正阐明了光导和半导体行为的理论.
科学领域:
- 固态物理 固态物理
- 半导体科学 半导体科学
- 光电学是指光电子产品.
背景情况:
- 最初的研究涉及到红外敏感半导体薄膜中的光导理论.
- 发表在"科学"杂志上 (1950,111),第685页.
研究的目的:
- 为原始出版物提供关键纠正.
- 确保准确地代表了关于光导性的科学发现.
主要方法:
- 文本分析和纠正特定的参考文献和术语.
- 在原始文本中识别错误的数字和描述词.
主要成果:
- 在第685页上,纠正了从 (10) 或 (5) 到 (1) 或 (2) 的图形引用.
- 从第687页删除"固定","正"和"电子"的术语.
结论:
- 修正后的文本为光导学提供了一个更准确的理论框架.
- 确保精确了解红外敏感半导体膜的行为.
相关概念视频
01:43Proofreading
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01:43Proofreading
Synthesis of new DNA molecules starts when DNA polymerase links nucleotides together in a sequence that is complementary to the template DNA strand. DNA polymerase has a higher affinity for the correct base to ensure fidelity in DNA replication. The DNA polymerase furthermore proofreads during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.Errors during Replication Are Corrected by the DNA Polymerase EnzymeGenomic DNA is synthesized in...
01:44Termination of Translation
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01:44Termination of Translation
The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the site where the peptide bond is formed - and a large, internal, water-filled tube through which the nascent polypeptide moves. This latter structure is called the Peptide Exit Tunnel, and it begins at the PTC and spans the body of the large ribosomal subunit. During translation, as the nascent polypeptide chain is synthesized, it passes through...
01:31Proofreading
Synthesis of new DNA molecules is carried out by the enzyme DNA polymerase, which adds nucleotides on the daughter strand complementary to the template DNA strand. DNA polymerase has a higher affinity to add the correct base and ensures fidelity during DNA replication. Furthermore, it exhibits proofreading activity during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.
Errors During Replication are Corrected by the DNA Polymerase Enzyme
Errors During Replication are Corrected by the DNA Polymerase Enzyme
01:15Variance
The deviations show how spread out the data are about the mean. A positive deviation occurs when the data value exceeds the mean, whereas a negative deviation occurs when the data value is less than the mean. If the deviations are added, the sum is always zero. So one cannot simply add the deviations to get the data spread. By squaring the deviations, the numbers are made positive; thus, their sum will also be positive.The standard deviation measures the spread in the same units as the data.