Zobrazeno 1 - 10
of 523
pro vyhledávání: '"W. Michaelis"'
Publikováno v:
Biogeosciences, Vol 12, Iss 6, Pp 1683-1696 (2015)
Coastal zones are important source regions for a variety of trace gases, including halocarbons and sulfur-bearing species. While salt marshes, macroalgae and phytoplankton communities have been intensively studied, little is known about trace gas flu
Externí odkaz:
https://doaj.org/article/9d733c9671f54cf3ae3880cde87d1b21
Publikováno v:
Biogeosciences, Vol 12, Iss 6, Pp 1697-1711 (2015)
In this study we report fluxes of chloromethane (CH3Cl), bromomethane (CH3Br), iodomethane (CH3I), and bromoform (CHBr3) from two sampling campaigns (summer and spring) in the seagrass dominated subtropical lagoon Ria Formosa, Portugal. Dynamic flux
Externí odkaz:
https://doaj.org/article/8bae06b616da4e5fa31f9456bb88343a
Publikováno v:
Atmospheric Measurement Techniques, Vol 4, Iss 10, Pp 2073-2086 (2011)
The isotopic composition of volatile organic compounds (VOCs) can provide valuable information on their sources and fate not deducible from mixing ratios alone. In particular the reported carbon stable isotope ratios of chloromethane and bromomethane
Externí odkaz:
https://doaj.org/article/b8ce00cb2d67473d846e08f0c800223d
Autor:
Marion Friedrich, Ovidiu D. Gordan, Derck Schlettwein, Dietrich R. T. Zahn, Roland Kröger, W. Michaelis, Thorsten U. Kampen
Publikováno v:
Journal of Materials Research. 19:2008-2013
Thin films of perfluorinated vanadyl phthalocyanine F16PcVO were prepared by physical vapor deposition in high vacuum on KBr and fused silica substrates. The absorption spectra in the visible region show that the films on different substrates have di
Publikováno v:
Journal of Materials Research. 19:2040-2048
Thin films of the perfluorinated phthalocyanines F16PcVO and F16PcCu were grown on insulator substrates by physical vapor deposition under high vacuum conditions to study their growth and electrical properties, analyzing them as possible candidates f
Publikováno v:
Applied Surface Science. 234:138-143
Inverse photoemission spectroscopy (IPES) was employed to study the density of unoccupied electronic states of fluorinated and non-fluorinated cooper phthalocyanine layers deposited onto hydrogen passivated Si(1 1 1) substrates. For the non-fluorinat
Die Auswirkungen der Gen- und Biotechnologie auf die menschliche Gesellschaft und Umwelt ist eines der aktuellen Themen unserer Zeit. Über die Zukunft der Genmedizin wird meist heftig, oft aber nur vordergründig diskutiert. Das vorliegende Werk bie
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 68:603-612
Semisolid phospholipid preparations have been well known for several years and are still investigated as drug carrier systems, e.g. for potential cancer therapy. They may be applied parenterally as semisolid vesicular phospholipid gels suitable as im
Publikováno v:
Geophysical Research Letters. 23:1929-1932
Raman lidar measurements of ozone, water vapor, and cirrus optical properties over northern Germany (53.4°N, 10.4deg;E) in autumn 1995 are presented. In contrast to smooth ozone profiles with values of 50 to 100 ppbv in a cloud-free and dry upper tr