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Macroscopic and microscopic in-situ observation of particles and gas bubbles are used to get precise impressions of the hydrodynamical characteristics of a biologically active suspension. Moreover, values of in-situ velocities and particle densities can be gained by using these methods. The suspended anaerobic sludge revealed an extensive fibrous structure(More)
Passive remote sensing with a Fourier transform infrared (FTIR) spectrometer allows the detection and identification of pollutant clouds in the atmosphere. In this work, the measurement technique and a data analysis method that does not require a previously measured background spectrum are described. Recent experimental results obtained with a new high(More)
Proceedings of SPIE Vol. 5235 and is made available as an electronic preprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or(More)
Foodborne illness presents a public health challenge in USA. There is an urgent need for the federal government and food industries to expand efforts to prevent any food contamination that potentially could be harmful to human health. The Food Safety Laboratory (FSL), ARS, USDA, is one of the leading laboratories for the development of optoelec-tronic(More)
1 INTRODUCTION The detection of chemical pollutants at sea is a difficult task when compared with oil spill survey. Mineral oil is mostly floating on the sea surface and therefore easily detectable aboard a ship or with remote sensing. An identification of oil-like chemicals on the sea surface with optical methods is often hampered because of their(More)
New methods for measurement of odorous gases, especially for aerosol-bound chemical compounds, have been developed in the Department of Measurement Technology (Technical University of Hamburg Harburg--MT-TUHH). Odorous compounds in the waste gases produced by the food industry were analysed based on high-volume aerosol sampling techniques, enrichment on(More)
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