Qing Ni

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During the three decades 1980-2010, magic angle spinning (MAS) NMR developed into the method of choice to examine many chemical, physical, and biological problems. In particular, a variety of dipolar recoupling methods to measure distances and torsion angles can now constrain molecular structures to high resolution. However, applications are often limited(More)
In this paper, we describe the design and experimental results from the rebuild of a 250 GHz gyrotron used for Dynamic Nuclear Polarization enhanced Nuclear Magnetic Resonance spectroscopy on a 380 MHz spectrometer. Tuning bandwidth of approximately 2 GHz is easily achieved at a fixed magnetic field of 9.24 T and a beam current of 95 mA producing an average(More)
Serial neuroimaging studies in Alexander's disease were obtained on an African-American girl who died at 4z\x years of age. She presented with macrocephaly, psychomotor retardation, spasticity, a seizure disorder, and hydrocephalus. A thorough metabolic evaluation of defined leukodystrophies, including Krabbe's disease, adrenoleukodystrophy, metachromatic(More)
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