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The problem addressed in this project is the need to monitor oxides of nitrogen(NOx, ie NO and NO2) levels in the combustion gases of stationary sources suchas power plants in order to facilitate on-line control of the scrubbers that willbe used to remove those pollutants. Since the measurements are in the parts permillion range, simpler and less expensive instruments than those currently used,su ...

Infrared tunable diode laser spectrometers provide a highly effective means of measuring trace concentrations, with either remote sensing or with advective sampling. It is often desirable to measure more than one trace gas at a time. This is especially true when gas emissions are strongly correlated, such as in combustion emissions where measuring both the CO2 concentration and another minor con ...

Developments in on-site spent solvent recovery have implications for reducedenvironmental pollution in the dry cleaning, furniture and paint manufacturingindustries as well as in a range of commercial services. Effluents from solventrecovery operations include fugitive emissions, vent stack gases and water/solvent mixtures. At present, the scale of solvent-recovery operations incertain industrie ...

The use of enzyme-linked immunosorbent assay (ELISA) to detect contaminants such as solvents, fuels, and pesticides in soil and water samples is now well established. Although ELISA and related methods can facilitate analysis of samples, several washing and separation steps are involved that require 30 to 120 minutes per sample to reach equilibrium. Recently, near infrared fluorescence immunoassa ...

The U.S. Department of Education has identified the need for more effective tools and technologies for increasing student reading skills. In response to this need, American Research Corporation of Virginia proposes the development and evaluation of interactive multimedia for reading instruction targeted for children in grades K through 2. Interactive multimedia is the integration of text, graphic ...

The U.S. Department of Education has identified the need for new technologies for enhancing career placement and career maintenance skills of individuals with disabilities. In response to this need, American Research Corporation of Virginia proposes the development and evaluation of interactive multimedia for diffusion of job matching and searching strategies to adolescents with disabilities in g ...

The U.S. Department of Education has identified the need for technologies to increase parents' skills in nurturing young children's learning and development. In response to this need, American Research Corporation of Virginia proposes the development and evaluation of interactive multimedia for enhancing parenting skills of adolescents and adults with children aged 2-4 years. Interactive multimed ...

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