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2013

Einwirkungen auf das Bauwerk Offshore-Windenergieanlage

Faber, P. D.-I. T. ., & Klinke, L. . (2013). Einwirkungen auf das Bauwerk Offshore-Windenergieanlage. Bauingenieur, 5.
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Faber, Torsten
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2013

Journal Article

Prof. Dr.-Ing. Torsten Faber

L. Klinke

WETI
Generalized class invariants with "Thetanullwerte"

Uzunkol, O. . (2013). Generalized class invariants with "Thetanullwerte". Turkish Journal of Mathematics, 37, 165–181. http://doi.org/10.3906/mat-1106-4
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Uzunkol, Osmanbey

Fachbereich

Fachbereich 3: Information und Kommunikation
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2013

Journal Article

Osmanbey Uzunkol
Phylogenetic analysis and antibiotic activity of bacteria isolated from the surface of two co-occurring macroalgae from the Baltic Sea

Goecke, F. R., Labes, A. ., Wiese, J. ., & Imhoff, J. F. (2013). Phylogenetic analysis and antibiotic activity of bacteria isolated from the surface of two co-occurring macroalgae from the Baltic Sea. European Journal of Phycology, 48, 47–60. Abgerufen von http://oceanrep.geomar.de/19592/

Abstract

Bacteria associated with Fucus vesiculosus and Delesseria sanguinea, two macroalgae from the Kiel Fjord were investigated seasonally over two years by cultivation-based methods. A total of 166 bacterial strains were isolated from the macroalgae, affiliated to seven classes of bacteria (Actinobacteria, Bacilli, Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria, Cytophagia and Flavobacteria). According to 16S rRNA gene sequence similarities they were arranged in 82 phylotypes of\ensuremath>99.0\% sequence identity. Assuming that chemical factors rule the bacteriamacroalga and bacteriabacteria interactions on algal surfaces, we tested the antibiotic activity of the bacterial isolates not only against a panel of four standard test organisms (Bacillus subtilis, Candida glabrata, Escherichia coli and Staphylococcus lentus) but also four macroalga-associated microorganisms: Algicola bacteriolytica and Pseudoalteromonas elyakovii (macroalgal pathogens), and Bacillus algicola and Formosa algae (strains associated with algal surfaces). Organic extracts of more than 51\% of the isolates from the two macroalgae inhibited the growth of at least one of the tested microorganisms. As much as 46\% and 45\% of the isolates derived from F. vesiculosus and D. sanguinea, respectively, showed antimicrobial activity against the set of macroalga-associated bacteria, compared with 13 and 19\% against a standard set of microorganisms. High antibacterial activity against macroalgal pathogens and bacterial competitors support the assumption that complex chemical interactions shape the relationships of bacteria associated with macroalgae and suggest that these bacteria are a rich source of antimicrobial metabolites.
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2013

Journal Article

Franz Goecke

Antje Labes

Jutta Wiese

Johannes Imhoff

antimicrobial activities

bacterial cultures

chemical associations

Delesseria

epiphytic bacteria

Fucus

Kiel

macroalgabacteria associations
A decision support framework for metrics selection in goal-based measurement programs: GQM-DSFMS

Gencel, C. ., Petersen, K. ., Mughal, A. A., & Iqbal, M. I. (2013). A decision support framework for metrics selection in goal-based measurement programs: GQM-DSFMS. Journal of Systems and Software, 86, 3091–3108.
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Petersen, Kai

Abteilung/Einrichtung

FLAIR - Flensburg Artificial Intelligence Research
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2013

Journal Article

Cigdem Gencel

Kai Petersen

Aftab Mughal

Muhammad Iqbal
Improving software security with static automated code analysis in an industry setting

Baca, D. ., Carlsson, B. ., Petersen, K. ., & Lundberg, L. . (2013). Improving software security with static automated code analysis in an industry setting. Software: Practice and Experience, 43, 259–279.
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Petersen, Kai

Abteilung/Einrichtung

FLAIR - Flensburg Artificial Intelligence Research
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2013

Journal Article

Dejan Baca

Bengt Carlsson

Kai Petersen

Lars Lundberg

2012

Beneficial effects of 2,4-diacetylphloroglucinol- producing pseudomonads on the marine alga Saccharina latissima

Nagel, K. ., Schneemann, I. ., Kajahn, I. ., Labes, A. ., Wiese, J. ., & Imhoff, J. F. (2012). Beneficial effects of 2,4-diacetylphloroglucinol- producing pseudomonads on the marine alga Saccharina latissima. Aquatic Microbial Ecology, 67, 239–249. Abgerufen von http://oceanrep.geomar.de/19108/ (Original work published 2024)

Abstract

Pseudomonas strains were shown to be regularly associated with the brown macroalga Saccharina latissima from the Baltic Sea, studied over several years, and were identified as producers of the antimicrobially active compound 2,4-diacetylphloroglucinol. These findings support the assumption of a stable association between the Pseudomonas spp. strains and S. latissima in the Baltic Sea. The metabolite profile of the Pseudomonas spp. comprised monoacetylphloroglucinol, 2,4-diacetylphloroglucinol, pyoluteorin and several rhizoxins, which exhibited broad-spectrum antibiotic activities against Gram-positive and Gram-negative bacteria as well as against fungi. Because the antibiotic activities included the inhibition of the 2 algal pathogens Pseudoalteromonas elyakovii and Algicola bacteriolytica, we propose a beneficial effect of these marine pseudomonads on their host S. latissima.
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2012

Journal Article

Kerstin Nagel

Imke Schneemann

Inga Kajahn

Antje Labes

Jutta Wiese

Johannes Imhoff

Pseudomonas protegens ? Alga?bacteria association ? 2

4-diacetylphloroglucinol ? Pyoluteorin ? Rhizoxin ? Brown macroalgae

RESISTANT STAPHYLOCOCCUS-AUREUS

FLUORESCENT PSEUDOMONAS

LAMINARIA-SACCHARINA

SECONDARY METABOLITES

IN-VITRO

BACTERIA

PF-5

JAPONICA

STRAINS

AGENT
Advanced controller research for multi-MW wind turbines in the UpWind project

Bossanyi, E. ., Savini, B. ., Iribas, M. ., Hau, M. ., Fischer, B. ., Schlipf, D. ., … Carcangiu, C. E. (2012). Advanced controller research for multi-MW wind turbines in the UpWind project. Wind Energy, 15, 119–145. http://doi.org/10.1002/we.523 (Original work published 2024)
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Schlipf, David
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2012

Journal Article

E. Bossanyi

B. Savini

M. Iribas

M. Hau

B. Fischer

David Schlipf

T. van Engelen

M. Rossetti

C. Carcangiu
Software quality trade-offs: A systematic map

Barney, S. ., Petersen, K. ., Svahnberg, M. ., Aurum, A. ., & Barney, H. . (2012). Software quality trade-offs: A systematic map. Information and Software Technology, 54, 651–662.
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Petersen, Kai

Abteilung/Einrichtung

FLAIR - Flensburg Artificial Intelligence Research
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2012

Journal Article

Sebastian Barney

Kai Petersen

Mikael Svahnberg

Aybüke Aurum

Hamish Barney
Measuring textual patent similarity on the basis of combined concepts: design decisions and their consequences

Moehrle, M. G., & Gerken, J. M. (2012). Measuring textual patent similarity on the basis of combined concepts: design decisions and their consequences. Scientometrics, 91, 805–826.
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Gerken, Jan

Abteilung/Einrichtung

FLAIR - Flensburg Artificial Intelligence Research

Forschungsfeld

Data Science und Künstliche Intelligenz

Fachbereich

Fachbereich 4: Wirtschaft
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2012

Journal Article

Martin Moehrle

Jan Gerken
Dual effect of macroalgal extracts on growth of bacteria in Western Baltic Sea

Goecke, F. R., Labes, A. ., Wiese, J. ., & Imhoff, J. F. (2012). Dual effect of macroalgal extracts on growth of bacteria in Western Baltic Sea. Revista De Biologia Marina Y Oceanografia, 47, 75–86. Abgerufen von http://oceanrep.geomar.de/14347/

Abstract

It is assumed that the biological characteristics of the bacterial strains used in bioactivity tests have strong influences on their susceptibility against antibacterial compounds. Therefore, the selection of bacterial test strains may rush conclusions on the effect of macroalgal extracts and metabolites on bacteria. To proof this assumption, we have analysed the biological activities of crude extracts of 16 macroalgae from the coastal waters of Kiel Fjord (Germany), and tested their effect against a panel of 10 microorganisms comprising 5 standard test strains of bacteria and 5 macroalga-associated bacteria. Fourteen macroalgae (88\%) displayed antibacterial activity against at least one of the test strains. Despite the high proportion of extracts exhibiting antimicrobial activity, only 3 strains of the standard set were susceptible to macroalgal extracts and the overall activities were low (less than 80\% of inhibition). Most of active extracts inhibited Bacillus subtilis, while no inhibition effects were found against Erwinia amylovora, Escherichia coli, and the macroalga-associated bacteria. In contrast, all extracts produced stimulatory growth effects of at least two of the tested bacteria. While growth stimulation of standard set of bacteria was rare (22.5\% of total tests) with exception of plant pathogen Erwinia amylovora and two cases of Staphylococcus lentus, it was common among bacteria associated with macroalgae (77.5\%), especially Bacillus algicola, Pseudomonas marincola and both algal-pathogenic bacteria. This study demonstrates that macroalgal extracts can display different effects, i.e., inhibition or stimulation of bacterial growth depending on the origin of the test strains, which are derived from a standard panel or from the marine environment, respectively.
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2012

Journal Article

Franz Goecke

Antje Labes

Jutta Wiese

Johannes Imhoff

Microbiology

Marine algae

antibacterial activities

stimulation of bacterial growth

Kiel fjord

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2013

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