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12 results on '"Dahdah L"'

3. Incidence and natural history of challenge-proven cowʼs milk allergy in European children – EuroPrevall birth cohort

Author

Schoemaker, A. A., Sprikkelman, A. B., Grimshaw, K. E., Roberts, G., Grabenhenrich, L., Rosenfeld, L., Siegert, S., Dubakiene, R., Rudzeviciene, O., Reche, M., Fiandor, A., Papadopoulos, N. G., Malamitsi-Puchner, A., Fiocchi, A., Dahdah, L., Sigurdardottir, S. Th., Clausen, M., Stańczyk-Przyłuska, A., Zeman, K., Mills, E. N. C., McBride, D., Keil, T., and Beyer, K.

Published
2015
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4. The EuroPrevall birth cohort study on food allergy: baseline characteristics of 12,000 newborns and their families from nine European countries

Author

McBride, D., Keil, T., Grabenhenrich, L., Dubakiene, R., Drasutiene, G., Fiocchi, A., Dahdah, L., Sprikkelman, A. B., Schoemaker, A. A., Roberts, G., Grimshaw, K., Kowalski, M. L., Stanczyk-Przyluska, A., Sigurdardottir, S., Clausen, M., Papadopoulos, N. G., Mitsias, D., Rosenfeld, L., Reche, M., Pascual, C., Reich, A., Hourihane, J., Wahn, U., Mills, E. N. C., Mackie, A., and Beyer, K.

Published
2012
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6. Transfer of bacteria via vapor in solar desalination units.

Author

Ayoub, G. M., Dahdah, L., and Alameddine, I.

Subjects
SALINE water conversion, SOLAR stills, CONTAMINATION of drinking water, SOLAR ultraviolet radiation, ESCHERICHIA coli, MICROBIAL contamination, WATER pollution
Abstract

Microbial contamination of drinking water is a major public health threat worldwide. Some studies have reported unusual findings of microbiological contamination in distilled water produced from solar stills. Not knowing the exact reason for this presence, they attributed it to possible cross contamination. In the complete absence of literature on the transfer of bacteria in solar stills, this research was conducted to investigate whether bacteria in water subjected to low temperature solar desalination finds its way into the effluent as a result of cross contamination or transfer through water vapor. This study looked at how the type of bacteria and the water temperature affected transfer in the absence of solar UV radiation. Simulated distillation experiments performed in darkness were conducted by spiking a pure culture of Escherichia coli or Enterococcus faecalis in tap water and heating it to low temperature ranges similar to those reached in solar stills under real sunlight. Results show that the two types of bacteria tested in the study were transferred with the vapor in a solar still when not exposed to solar UV radiation and that transfer at the 40–45˚C range is significantly higher than transfer at other temperature ranges. Moreover, transfer is independent of bacterial type; however E. faecalis transfer rates are higher than E. coli at the 40–45 and 50–55˚C ranges. While solar desalination can effectively inactivate bacteria in water, there exists a mode of transfer of bacteria in the humid medium of the solar still to the distillate that takes place under suboptimal weather conditions. [ABSTRACT FROM AUTHOR]

Published
2015
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