Award Data

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72904-Aerosol particles have important impacts on visibility, acid deposition, climate, and human health, although large uncertainties remain on their quantification. A significant part of the anthropogenic aerosol is generated from energy-related activities, and organic compounds are known to account for a large part of ambient aerosol mass in many locations. However, the measurement of the com ...

72080-Nitrogen dioxide emissions are regulated by a national ambient air quality standard under the 1970 Clean Air Act. The prevalent means of detection, a chemiluminescence-based monitor (the so-called NOx box), often provides inaccurate readings for nitrogen dioxide in the presence of other nitrogen-containing trace atmospheric species. This project will build an uncomplicated, inexpensive, an ...

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72743-In the past, power converter/inverter designs (such as those used in electric or hybrid electric vehicles) tended to be application-specific engineering projects, which limited their utility because the low-volume production of specialized power conversion equipment significantly increased design risk and development cost. On the other hand, todays power electronics technologies lend themse ...

40255 November 6, 1996 Radiation Monitoring Devices, Inc. Silicon avalanche photodiodes (APD) have been studied extensively as a photodetector candidate for the electromagnetic calorimeter readout of the compact muon solenoid (CMS) detector at the Large Hadron Collider. The present detectors under consideration do not provide satisfactory combination of ...

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72199-Proton Emission Tomography (PET) is a powerful imaging tool that can provide diagnosis for symptoms of diseases such as Alzheimer¿s, cancer, head trauma, and stroke. The performance of current clinical PET systems is limited by available detector technology. An urgent need exists to improve the PET instrumentation in order to exploit the full potential of this promising technique. This p ...

72619-Gamma ray spectrometers are an important element of nuclear and elementary particle physics experiments. However, the performance of the detection systems used in these experiments is often limited by the properties of presently available detectors. This project will investigate a new design for cadmium zinc telluride (CZT) detectors that promises to provide high energy resolution and high ...

72085-Proton Emission Technology (PET) is a powerful imaging tool that can provide diagnosis for symptoms of diseases such as Alzheimer¿s, cancer, head trauma, and stroke. However, the performance of current clinical PET systems is limited by available detector technology, and improved PET instrumentation will be needed to exploit the full potential of this promising technique. This project wil ...