400 research outputs found
Environmental impacts of gamma versus X-ray irradiation sterilization
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Herbicide Evaluation in Arkansas Cotton, 1999
Herbicidal weed control is economically important for production of cotton. Field experiments are conducted annually in Arkansas to evaluate the activity of developmental and commercial herbicides for selective control of weeds in cotton. These experiments serve both industry and Arkansas agriculture by providing information on the selectivity of herbicides still in the developmental stage and by comparing the activity of these new herbicides with that of recommended herbicides
A Comparison of Fundamental Noise in Kinetic Inductance Detectors and Transition Edge Sensors for Millimeter-wave Applications
Kinetic inductance detectors (KIDs) show promise as a competitive technology
for astronomical observations over a wide range of wavelengths. We are
interested in comparing the fundamental limitations to the sensitivity of KIDs
with that of transition edge sensors (TESs) at millimeter wavelengths,
specifically over the wavelengths required for studies of the Cosmic Microwave
Background (CMB). We calculate the total fundamental noise arising from optical
and thermal excitations in TESs and KIDs for a variety of bath temperatures and
optical loading scenarios for applications at millimeter wavelengths. Special
consideration is given to the case of ground-based observations of 100 GHz
radiation with a 100 mK bath temperature, conditions consistent with the
planned second module of the QUBIC telescope, a CMB instrument. Under these
conditions, a titanium nitride KID with optimized critical temperature pays a
few percent noise penalty compared to a typical optimized TES.Comment: 6 pages, 2 figures, Proceedings of 15th International Workshop on Low
Temperature Detectors (LTD-15, Pasadena, California, June 2013), To be
published in the Journal of Low Temperature Physics (JLTP
A Thermal Imaging Instrument with Uncooled Detectors
In this work, we performed an instrument concept study for sustainable thermal imaging over land with uncooled detectors. We evaluated two different uncooled detector technologies uncooled microbolometers and thermopiles. We have also evaluated materials for use in in a uncooled thermopile detector concept
Emergency preparedness: prepared for disaster
Discusses the need for law enforcement personnel to be trained to handle any type of disaster in order to protect the community and citizens
Herbicide Evaluation in Arkansas Cotton 2000
Herbicidal weed control is economically important for production of cotton. Field experiments are conducted annually in Arkansas to evaluate the activity of developmental and commercial herbicides for selective control of weeds in cotton. These experiments serve both industry and Arkansas agriculture by providing information on the selectivity of herbicides still in the developmental stage and by comparing the activity of these new herbicides with that of recommended herbicides
Nanostructured Vanadium Oxide Uncooled Bolometers and Method of Fabrication
The present invention relates to uncooled microbolometers which can be integrated in future thermal instruments engaged in land imaging on future observatories. The present invention includes: (1) developing and characterizing a microstructured VOx thin film, and, (2) fabricating an uncooled microbolometer array over the 8-14 micron spectral band
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