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Akademický článek

Air–sea gas exchange at wind speeds up to 85 m s−1

Autor: K. E. Krall, A. W. Smith, N. Takagaki, B. Jähne

Publikováno v: Ocean Science, Vol 15, Pp 1783-1799 (2019)

Gas transfer velocities were measured in two high-speed wind-wave tanks (Kyoto University and the SUSTAIN facility, RSMAS, University of Miami) using fresh water, simulated seawater and seawater for wind speeds between 7 and 85 m s−1. Using a m

Externí odkaz: https://doaj.org/article/0c625101dd45434fb8b7a8acfd0c3174

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Akademický článek

Measurements of air–sea gas transfer velocities in the Baltic Sea

Autor: L. Nagel, K. E. Krall, B. Jähne

Publikováno v: Ocean Science, Vol 15, Pp 235-247 (2019)

Heat transfer velocities measured during three different campaigns in the Baltic Sea using the active controlled flux technique (ACFT) with wind speeds ranging from 5.3 to 14.8 m s−1 are presented. Careful scaling of the heat transfer velocitie

Externí odkaz: https://doaj.org/article/4e9f2fc1cb9d406dbb4960cada4dab12

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Akademický článek

Measuring air–sea gas-exchange velocities in a large-scale annular wind–wave tank

Autor: E. Mesarchaki, C. Kräuter, K. E. Krall, M. Bopp, F. Helleis, J. Williams, B. Jähne

Publikováno v: Ocean Science, Vol 11, Iss 1, Pp 121-138 (2015)

In this study we present gas-exchange measurements conducted in a large-scale wind–wave tank. Fourteen chemical species spanning a wide range of solubility (dimensionless solubility, α = 0.4 to 5470) and diffusivity (Schmidt number in water, Scw =

Externí odkaz: https://doaj.org/article/69de987aad02431aa299d4df65926fa5

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Akademický článek

Comparative heat and gas exchange measurements in the Heidelberg Aeolotron, a large annular wind-wave tank

Autor: L. Nagel, K. E. Krall, B. Jähne

Publikováno v: Ocean Science, Vol 11, Iss 1, Pp 111-120 (2015)

A comparative study of simultaneous heat and gas exchange measurements was performed in the large annular Heidelberg Air–Sea Interaction Facility, the Aeolotron, under homogeneous water surface conditions. The use of two gas tracers, N2O and C2HF5,

Externí odkaz: https://doaj.org/article/c06ef37b81ce4c4c9789408ae0efd737

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Akademický článek

First laboratory study of air–sea gas exchange at hurricane wind speeds

Autor: K. E. Krall, B. Jähne

Publikováno v: Ocean Science, Vol 10, Iss 2, Pp 257-265 (2014)

In a pilot study conducted in October and November 2011, air–sea gas transfer velocities of the two sparingly soluble trace gases hexafluorobenzene and 1,4-difluorobenzene were measured in the unique high-speed wind-wave tank at Kyoto University, J

Externí odkaz: https://doaj.org/article/d465dd5b5030482ab11ec76430ec3ec5

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Akademický článek

Intercontinental transport of nitrogen oxide pollution plumes

Autor: M. Wenig, N. Spichtinger, A. Stohl, G. Held, S. Beirle, T. Wagner, B. Jähne, U. Platt

Publikováno v: Atmospheric Chemistry and Physics, Vol 3, Iss 2, Pp 387-393 (2003)

We describe the first satellite observation of intercontinental transport of nitrogen oxides emitted by power plants, verified by simulations with a particle tracer model. The analysis of such episodes shows that anthropogenic NOx plumes may influenc

Externí odkaz: https://doaj.org/article/319ea327be7d47fb8025471f5ad14cba

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Akademický článek

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Measuring air–sea gas exchange velocities in a large scale annular wind-wave tank

Autor: E. Mesarchaki, C. Kräuter, K. E. Krall, M. Bopp, F. Helleis, J. Williams, B. Jähne

Publikováno v: Ocean Science, 11 . pp. 121-138.

In this study we present gas exchange measurements conducted in a large scale wind-wave tank. Fourteen chemical species spanning a wide range of solubility (dimensionless solubility, α = 0.4 to 5470) and diffusivity (Schmidt number in water, Scw = 5

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7808a203e5923fa74dccc4c99d59a29e
https://doi.org/10.5194/osd-11-1643-2014

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Structural and Functional Evidence for Xylem‐Mediated Water Transport and High Transpiration in Agrobacterium tumefaciens ‐Induced Tumors of Ricinus communis *

Autor: Uli Schurr, B. Jähne, Cornelia I. Ullrich, Dominik Schmundt, Bettina Schuberth, Roni Aloni, Katja S. Pradel

Publikováno v: Botanica Acta. 109:405-411

Tumors induced by the wild-type strain C58 of Agrobacterium tumefaciens in hypocotyls of Ricinus communis L. were investigated structurally and functionally with respect to xylem differentiation, cuticle and stomata development, water pathway and tra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9521dbddad52e8b427680dfad6069bb3
https://doi.org/10.1111/j.1438-8677.1996.tb00590.x

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In situ microscopy for on-line characterization of cell-populations in bioreactors, including cell-concentration measurements by depth from focus

Autor: C. Bittner, G. Wehnert, K. Schneider, B. Jähne, Thomas Scheper, T. Scholz, H. Suhr, P. Geissler

Publikováno v: Biotechnology and Bioengineering. 47:106-116

A new technique is presented which allows the use of a front-end sensor head for in situ and on-line characterization of cell concentration and cell size during fermentation. An epifluorescence microscope is mounted in a port of a bioreactor viewing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::03d582c15d6a5ef1ee2955a03da40849
https://doi.org/10.1002/bit.260470113

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