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)
In this paper, we studied some new technologies and solutions for remote digital home control system. Although many solutions for remote digital home control system are being developed, few can be applied to real life because of different standard protocol. Each organization emphasizes on different area. Thus, we present a web server based remote control(More)
Virtual community performs more and more important role for online users. Many tools for virtual community design, implementation and management have been developed, such as Virtual Reality (VR). On the other hand, few popular technologies have received frequent usage because of cost and time consuming. In this study, a platform for building virtual(More)
The Google Company released Google Earth (GE), a stand-alone program that combines three major Google services (satellite maps, local yellow pages, and a vast database of statistics) into a single interface which allows zoom to street-level details anywhere in the world. However, GE can only provide high quality geographic information service for limited(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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