Abstract:
Methods for detecting parasites, such as Cryptosporidium parvum, in turbid and non-turbid samples by solubilizing molecular markers or antigens of the parasite. The molecular markers are solubilized by incubating a sample containing the parasite with a solubilization buffer and detecting the solubilized antigens by electrochemiluminescence. The solubilization buffer contains one or more detergents alone or in combination with one or more denaturing agents in a buffered solution. The methods are an improvement over existing immunofluorescence assays for C. parvum because the methods described herein are quantitative, reproducible, have high sensitivity, are not labor-intensive, require only minimal sample processing, and avoid being adversely affected by sample turbidity. In addition, by using a electrochemiluminescence assay, microscopy is not required.
Abstract:
Vehicle-mounted UWB systems and/or methods for detecting mines and other explosive devices are provided. In certain exemplary embodiments, a system for detecting non-buried mines and/or improvised explosive devices is provided. Distance measuring equipment may be configured to track movement of the system. Substantially forward-looking bistatic antenna transceivers may be capable of collecting range-magnitude radar data over two channels. A first transceiver may capture radar data for a first area, and a second transceiver may capture radar data for a second area. A processor may be configured to: derive range resolution data and cross-range resolution data from the range-magnitude radar data; focus the range resolution data and the cross-range resolution data, based at least on the distance data and an antenna beamwidth pattern associated with the antenna transceivers; and, “and” data for portions of the first area and the second area that overlap.
Abstract:
A system, method, and/or apparatus for remote measurement of terrestrial biomass contained in vegetative elements, such as large tree boles or trunks present in an area of interest, are provided. The method includes providing an airborne VHF radar system in combination with a LiDAR system, overflying the area of interest while directing energy toward the area of interest, using the VHF radar system to collect backscatter data from the trees as a function of incidence angle and frequency, and determining a magnitude of the biomass from the backscatter data and data from the laser radar system for each radar resolution cell. A biomass map is generated showing the magnitude of the biomass of the vegetative elements as a function of location on the map by using each resolution cell as a unique location thereon. In certain preferred embodiments, a single frequency is used with a linear array antenna.
Abstract:
Vehicle-mounted UWB systems and/or methods for detecting mines and other explosive devices are provided. In certain exemplary embodiments, a system for detecting non-buried mines and/or improvised explosive devices is provided. Distance measuring equipment may be configured to track movement of the system. Substantially forward-looking bistatic antenna transceivers may be capable of collecting range-magnitude radar data over two channels. A first transceiver may capture radar data for a first area, and a second transceiver may capture radar data for a second area. A processor may be configured to: derive range resolution data and cross-range resolution data from the range-magnitude radar data; focus the range resolution data and the cross-range resolution data, based at least on the distance data and an antenna beamwidth pattern associated with the antenna transceivers; and, “and” data for portions of the first area and the second area that overlap.
Abstract:
Method and apparatus for remote measurement of terrestrial biomass contained in vegetative elements, such as large tree boles or trunks present in an area of interest. The method includes providing an airborne radar system, overflying the area of interest while directing radar energy having a frequency of under 400 MHz, and preferably between 80 and 120 MHz, toward the area of interest, using the radar system to collect backscatter data from the radar energy as a function of incidence angle and frequency, and using an inversion algorithm to determine a magnitude of the biomass from the backscatter data for each radar resolution cell. A biomass map is generated showing the magnitude of the biomass of the vegetative elements as a function of location on the map by using each resolution cell as a unique location thereon.