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Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
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Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
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The actual hypothesis testing begins by considering two hypotheses. They are termed  the null hypothesis and the alternative hypothesis. These hypotheses contain opposing viewpoints.
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Electric generators induce an emf by rotating a coil in a magnetic field. A simple alternator is an AC generator that creates electrical energy that varies sinusoidally with time. A simple alternator consists of a conducting loop that is placed inside a uniform magnetic field. The loop is connected to split rings connected to the external circuit with the help of brushes.
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Alternative Method of Removing Otoliths from Sturgeon
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甲酸:一种不敏感的RDX替代品

Amanda F Baxter1, Igor Martin1, Karl O Christe1

  • 1Loker Hydrocarbon Research Institute and Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States.

Journal of the American Chemical Society
|October 24, 2018
PubMed
概括

研究人员用含的酸盐合成了五种酸盐. 盐表现出类似RDX的性能,敏感度明显降低,这表明它是一种更安全的能量替代材料.

科学领域:

  • 材料科学
  • 化学学
  • 能量材料

背景情况:

  • 开发具有更高安全性质的新能源材料至关重要.
  • 酸盐是一种具有潜在能源应用的化合物.
  • 对含的阳离子的研究可以影响盐的特性.

研究的目的:

  • 合成和描述五种含有的酸盐的新型盐.
  • 评估这些新能源材料的性能和灵敏度.
  • 找出像RDX这样的现有能量材料的替代品.

主要方法:

  • 合成了五种酸盐.
  • 使用多核NMR,IR,拉曼光谱和单晶X射线分析进行表征.
  • 通过差异性热分析和灵敏度测试 (摩擦和冲击) 评估热稳定性.
  • 使用高斯-4复合法进行热化学计算.
  • 使用Chapman-Jouguet热力学爆炸理论进行性能预测.

主要成果:

  • 成功制备和全面描述了五种酸盐.
  • 甲基盐, [CH ((NH2) 2) + [C ((NO2) 3) ],其性能与RDX (研究部门的爆炸物,环甲基丁胺) 相当.

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  • 与RDX相比,这种形式盐对冲击和摩擦的敏感性明显较低.
  • 结论:

    • 酸盐是一种有前途的能量材料.
    • 它的高性能和降低的敏感性使其成为RDX的潜在替代品.
    • 对这种化合物的进一步研究可能会导致更安全的能量配方.