Hiatal-Hernia
发表于 2025-3-26 23:22:03
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恩惠
发表于 2025-3-27 01:40:07
More Advanced Theories of NMR,The two quite separate theoretical models of NMR, first set out in section 1.8 and elaborated in chapter 2, must be further extended to permit the description and explanation of several more complex NMR experiments.
Resign
发表于 2025-3-27 07:13:38
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不足的东西
发表于 2025-3-27 11:07:47
The NMR Spectrometer,t, (b) a radio-frequency source and detector and (c) data handling/ display facilities. These instrument parts are all interdependent, and it is impossible to discuss them in strictly ordered isolation. Detailed instrumental capabilities are also scrutinised in later chapters where appropriate.
接触
发表于 2025-3-27 16:18:54
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乱砍
发表于 2025-3-27 19:36:14
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蔑视
发表于 2025-3-28 00:51:39
Fluorine-19 NMR Spectra, over all, around 800 ppm, although most resonances of carbon-fluorine environments occur within a 300 ppm scan. Strong coupling to other nuclei results in long range effects and these (like all coupling effects) influence both the fluorine-19 spectrum and that of the other nucleus. Since .=½ the coupling patterns are easily deduced.
合法
发表于 2025-3-28 04:28:59
NMR Spectra from Other Nuclei,h abundance and sensitivity, such as fluorine-19 and phosphorus-31. Nitrogen NMR and oxygen NMR studies owe part of their extensiveness to the central chemical and biochemical importance of these elements: there are certainly easier NMR elements which have not attracted as much attention.
FLIT
发表于 2025-3-28 08:42:02
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柱廊
发表于 2025-3-28 12:39:08
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