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Samer, M., M. Fiedler, H. - J. Muller, M. Glaser, C. Ammon, W. Berg, P. Sanftleben, and R. Brunsch, "Winter Measurements of Air Exchange Rates Using Tracer Gas Technique And Quantification of Gaseous Emissions From A Naturally Ventilated Dairy Barn", Applied Engineering in Agriculture, 2011. Abstract

Measuring the ventilation rates and then quantifying the gaseous emissions from naturally ventilated barns is a particularly difficult task and associated with large uncertainties; where no accurate, reliable, and online method is available for ventilation rate measurements. Therefore, the objective of this study was to develop further the tracer gas technique (TG) for ventilation rate measurements through winter seasons. Fifteen field experiments were carried out to study the ventilation rates in a naturally ventilated dairy barn located in North Germany through three consecutive winter seasons.

Hawary, D. L., M. A. Motaleb, H. Farag, O. W. Guirguis, and M. Z. Elsabee, "Water-soluble Derivatives of Chitosan as A Target Delivery System of 99mtc to some Organs in Vivo for Nuclear Imaging And Biodistribution", J. Radioanal. Nucl. Chem., vol. 290, issue 3, pp. 557-567, 2011. AbstractCU-PDF.pdf

Carboxymethyl chitosan, (CMC), and N-laurylcarboxymethyl chitosan (LCMC), have been prepared as water soluble derivatives of chitosan. These biodegradable chitosan derivatives were characterized and investigated for nuclear imaging and body distribution. They were labeled with 99mTc to use them as targeted delivery to some organs in vivo for nuclear imaging and to follow their biodistribution within the body. The factors controlling the labeling efficiency have been investigated.