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handiest    
handy的最高级

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Handy \Hand"y\ (h[a^]nd"[y^]), a. [Compar. {Handier}
(-[i^]*[~e]r); superl. {Handiest}.] [OE. hendi, AS. hendig
(in comp.), fr. hand hand; akin to D. handig, Goth. handugs
clever, wise.]
1. Performed by the hand. [Obs.]
[1913 Webster]

To draw up and come to handy strokes. --Milton.
[1913 Webster]

2. Skillful in using the hand; dexterous; ready; adroit.
"Each is handy in his way." --Dryden.
[1913 Webster]

3. Ready to the hand; near; also, suited to the use of the
hand; convenient; valuable for reference or use; as, my
tools are handy; a handy volume.
[1913 Webster]

4. (Naut.) Easily managed; obedient to the helm; -- said of a
vessel.
[1913 Webster]


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  • 4. 7: NMR Spectroscopy - Chemistry LibreTexts
    Peak Intensity Mainly useful for proton NMR, the size of the peaks in the NMR spectra can give information concerning the number of nuclei that gave rise to that peak This is done by measuring the peak’s area using integration
  • Chapter 6. NMR Spectroscopy (Chapter 6 Campbell White).
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    As the water content is increased, the water proton peak is shifted to down-field because the water is involved in the more hydrogen bonding The linear relation between water content and chemical shift difference was used to assess the water content in organic solvent
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    As you know "D2O" will not show a signal in proton NMR Something else must be generating this signal In the footnote of the solvent chart it reads "When the exchange rate between H2O and HDO is slow on the NMR timescale the water peak appears as two peaks"
  • Magnetism - Questions and Answers in MRI
    The size and shape of a peak at a given spectral position is variable and depends on five major factors: (1) the concentration of nuclei giving rise to a particular line; (2) the T1 and T2 relaxation times of the metabolite, also affected by the TR and TE of the MRS sequence; (3) magnetic inhomogeneity across the sample, controlled by shimming
  • Learning Guide for Chapter 5 - NMR Spectroscopy
    What does the integration tell us on an NMR spectrum? Why does the area under a curve increase when there are more H's in a peak? Identify the sets of equivalent H's in the following compound





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