Susanne Stephan results 37
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Detektivarbeit im bakteriellen ProteomNARA Subscribed
Genome sequences encode the full blueprint of life. However, functional annotation, especially of short open reading frames (sORFs), remains uncertain. Many small proteins are likely overlooked by standard algorithms. Proteomics using LC-MS/MS enables protein detection but depends on existing databases, which underrepresent sORFs. We developed a proteogenomic workflow integrating MS/MS data with genome-wide ORF predictions to...
Marmorgewinnung und Schmiedetätigkeit im Frühmittelalter – Ein erster Hinweis im Steinbruchrevier Spitzelofen in Kärnten/ÖsterreichNARA Subscribed
Zusammenfassung Im römerzeitlichen Marmorsteinbruchrevier Spitzelofen in Kärnten wurde bei archäologischen Ausgrabungen auch Hammerschlag gefunden, der aus einer frühmittelalterlichen Brandschicht stammt. Radiokarbondatierungen dieser Schicht weisen den Befund in das 8. bzw. 9. Jahrhundert n. Chr. Im Zuge der metallurgischen Untersuchung wurde plättchenförmiger Hammerschlag festgestellt. Die Dicke der Plättchen variiert zwisch...
The Fe(Ni)–C–N-phase diagram at 10 GPa—implications for nitrogen and carbon storage in the deep mantleNARA Subscribed
Nitrogen is the most abundant element in the Earth's atmosphere, yet its geochemical behavior and distribution among the various reservoirs (atmosphere, crust, mantle, and core) remain poorly understood. Although estimates of N and C fluxes in the mantle vary, there is a consensus regarding the disparity between input and output, leading to an increase in N and C contents in the mantle. The low solubility of N in mantle minera...
Lakes worldwide are affected by multiple stressors, including climate change. This includes massive loading of both nutrients and humic substances to lakes during extreme weather events, which also may disrupt thermal stratification. Since multi‐stressor effects vary widely in space and time, their combined ecological impacts remain difficult to predict. Therefore, we combined two consecutive large enclosure experiments with a...
Journal ClubNARA Subscribed
Tree insect pests and pathogens: a global systematic review of their impacts in urban areasNARA Subscribed
Trees contribute greatly to urban environments and human well-being, yet relatively little is known about the extent to which a rising incidence of tree insect pests and pathogens may be affecting these contributions. To address this issue, we undertook a systematic review and synthesis of the diverse global empirical evidence on the impacts of urban tree insect pests and pathogens, using bibliographic databases. Following scr...
Untersuchungen von Hammerschlag aus einer Schmiedeesse im römerzeitlichen Marmorsteinbruchrevier Spitzelofen in Kärnten, ÖsterreichNARA Subscribed
Zusammenfassung Im römerzeitlichen Marmorsteinbruchrevier Spitzelofen in Kärnten wurden bei archäologischen Ausgrabungen metallurgische Reste aus einer Schmiedeesse gefunden, die die Bearbeitung der Werkzeuge in unmittelbarer Nähe zum Steinbruch belegen. Aus einer holzkohlehaltigen Schicht wurden drei Korngrößenfraktionen von Hammerschlag gewonnen und untersucht. In allen Proben wurden die Eisenoxide Wüstit (FeO), Magnetit (Fe...
Untersuchung eines Doppelspitzschlägels aus dem römerzeitlichen Marmorsteinbruchrevier Spitzelofen in Kärnten, ÖsterreichNARA Subscribed
Zusammenfassung Ein Doppelspitzschlägel aus dem römerzeitlichen Marmorsteinbruchrevier Spitzelofen in Kärnten wurde untersucht, um dessen Herstellung und Einsatz bei der Marmorbearbeitung beurteilen zu können. Das Eisen wurde in Form von Luppen aus Rennfeuern erhalten. Inhomogene Kohlenstoffverteilungen im Schlägel können auf die Eisenherstellung im Rennfeuer sowie die Verarbeitung durch Schmieden zurückgeführt werden. Das Eis...
Reproducibility and accuracy of microscale thermophoresis in the NanoTemper Monolith: a multi laboratory benchmark studyNARA Subscribed
Microscale thermophoresis (MST), and the closely related Temperature Related Intensity Change (TRIC), are synonyms for a recently developed measurement technique in the field of biophysics to quantify biomolecular interactions, using the (capillary-based) NanoTemper Monolith and (multiwell plate-based) Dianthus instruments. Although this technique has been extensively used within the scientific community due to its low sample...
TRY plant trait database – enhanced coverage and open accessNARA Subscribed
Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodivers...
Conversion of cis ‐2‐carboxycyclohexylacetyl‐CoA in the downstream pathway of anaerobic naphthalene degradationNARA Subscribed
Summary The cyclohexane derivative cis ‐2‐(carboxymethyl)cyclohexane‐1‐carboxylic acid [(1 R ,2 R )‐/(1 S ,2 S )‐2‐(carboxymethyl)cyclohexane‐1‐carboxylic acid] has previously been identified as metabolite in the pathway of anaerobic degradation of naphthalene by sulfate‐reducing bacteria. We tested the corresponding CoA esters of isomers and analogues of this compound for conversion in cell free extracts of the anaerobic naph...
Climate change is expected to favour infectious diseases across ecosystems worldwide. In freshwater and marine environments, parasites play a crucial role in controlling plankton population dynamics. Infection of phytoplankton populations will cause a transfer of carbon and nutrients into parasites, which may change the type of food available for higher trophic levels. Some phytoplankton species are inedible to zooplankton, an...
Summary In P seudomonas aeruginosa , quorum sensing ( QS ) regulates the production of secondary metabolites, many of which are antimicrobials that impact on polymicrobial community composition. Consequently, quenching QS modulates the environmental impact of P . aeruginosa . To identify bacteria capable of inactivating the QS signal molecule 2‐heptyl‐3‐hydroxy‐4(1 H )‐quinolone ( PQS ), a minimal medium containing PQS as the...