Examlex
Following the accidental release of a batch of phones that failed screening control, a manufacturer of mobile phones replaces all such phones at no cost to the user-even taking care of shipping and delivery. Which step in the control process does this example represent?
Chemical Shift
In nuclear magnetic resonance (NMR) spectroscopy, chemical shift is the relative change in the frequency of nuclear magnetic resonance of a nucleus compared to a reference standard.
Aromatic Protons
Hydrogen atoms attached to the carbon atoms of an aromatic ring, characterized by distinct NMR signals.
Magnetic Field
A region around a magnetic material or a moving electric charge within which the force of magnetism acts.
Nuclear Magnetic Resonance
A spectroscopic technique that exploits the magnetic properties of certain atomic nuclei to determine the physical and chemical properties of atoms or the molecules in which they are contained.
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