Fak. 3 Prozesswissenschaften

1060 Items

Recent Submissions
Microbial population composition of ochrous biofilms and water samples obtained from technical groundwater-fed systems

Schröder, Josephin (2018)

This study assessed the abundance, composition, diversity and functional organisation of bacterial communities correlated to chemical water parameters in four technical groundwater-fed systems. Each sampling site was vulnerable to iron-clogging and was characterised by its own specific technical and hydrochemical conditions. Biofilm and groundwater samples were obtained and compared for drinkin...

Draft Genome Sequence of a Potential Nitrate-Dependent Fe(II)-Oxidizing Bacterium, Aquabacterium parvum B6

Zhang, Xiaoxin ; Ma, Fang ; Szewzyk, Ulrich (2016)

Aquabacterium parvum B6 is a potential nitrate-dependent Fe(II)-oxidizing bacterium. The genes related to its denitrifying mechanism and iron metabolisms were unknown. We present the draft genome of Aquabacterium parvum B6, which could provide further insight into the nitrate-dependent Fe(II)-oxidizing mechanism of strain B6.

Complete Genome Sequence of “Candidatus Viadribacter manganicus” Isolated from a German Floodplain Area

Braun, Burga ; Szewzyk, Ulrich (2016)

Iron- and manganese-depositing bacteria occur in many soils and all water systems, and their biogenic depositions of ochre in technical systems may cause severe clogging problems and monetary losses. “Candidatus Viadribacter manganicus” is a small coccoid, iron- and manganese-depositing bacterium isolated from the Lower Oder Valley National Park, Germany.

Draft Genome Sequence of Rheinheimera sp. Strain SA_1 Isolated from Iron Backwash Sludge in Germany

Schröder, Josephin ; Braun, Burga ; Liere, Karsten ; Szewzyk, Ulrich (2016)

Rheinheimera sp. strain SA_1 is an iron-depositing bacterium for which we report a draft genome sequence. Strain SA_1 was isolated from iron backwash sludge of a waterworks in Germany. The Illumina MiSeq technique was used to sequence the genome of the strain.

Draft Genome Sequence of Ideonella sp. Strain A 288, Isolated from an Iron-Precipitating Biofilm

Braun, Burga ; Künzel, Sven ; Szewzyk, Ulrich (2017)

Here, we report the draft genome sequence of the betaproteobacterium Ideonella sp. strain A_228. This isolate, obtained from a bog iron ore-containing floodplain area in Germany, provides valuable information about the genetic diversity of neutrophilic iron-depositing bacteria. The Illumina NextSeq technique was used to sequence the draft genome sequence of the strain.

Draft Genome Sequence of the Gram-Positive Neutrophilic Iron-Precipitating Kineosporia sp. Strain A_224

Braun, Burga ; Künzel, Sven ; Szewzyk, Ulrich (2017)

We report here the draft genome sequence of the neutrophilic iron-precipitating Kineosporia sp. strain A_224. Analysis of the predicted genes may improve our knowledge of its role in ochrous formations in natural and technical water systems. This is the first public genome sequence of a Kineosporia aurantiaca strain.

Draft Genome Sequence of Rheinheimera sp. F8, a Biofilm-Forming Strain Which Produces Large Amounts of Extracellular DNA

Schuster, Anna-Kathrin ; Szewzyk, Ulrich (2016)

Rheinheimera sp. strain F8 is a biofilm-forming gammaproteobacterium that has been found to produce large amounts of filamentous extracellular DNA. Here, we announce the de novo assembly of its genome. It is estimated to be 4,464,511 bp in length, with 3,970 protein-coding sequences and 92 RNA-coding sequences.

Transient lattice contraction in the solid-to-plasma transition

Ferguson, K. R. ; Bucher, M. ; Gorkhover, Tais ; Boutet, S. ; Fukuzawa, H. ; Koglin, J. E. ; Kumagai, Y. ; Lutman, A. ; Marinelli, A. ; Messerschmidt, M. ; Nagaya, K. ; Turner, J. ; Ueda, K. ; Williams, G. J. ; Bucksbaum, P. H. ; Bostedt, C. (2016)

In condensed matter systems, strong optical excitations can induce phonon-driven processes that alter their mechanical properties. We report on a new phenomenon where a massive electronic excitation induces a collective change in the bond character that leads to transient lattice contraction. Single large van der Waals clusters were isochorically heated to a nanoplasma state with an intense 10-...

Surface chemistry and stability of metastable corundum-type In2O3

Köck, Eva-Maria ; Kogler, Michaela ; Zhuo, Chen ; Schlicker, Lukas ; Bekheet, Maged F. ; Doran, Andrew ; Gurlo, Aleksander ; Penner, Simon (2017)

To account for the explanation of an eventual sensing and catalytic behavior of rhombohedral In2O3 (rh-In2O3) and the dependence of the metastability of the latter on gas atmospheres, in situ electrochemical impedance spectroscopic (EIS), Fourier-transform infrared spectroscopic (FT-IR), in situ X-ray diffraction and in situ thermogravimetric analyses in inert (helium) and reactive gases (hydro...

Detection of Listeria innocua on roll-to-roll produced SERS substrates with gold nanoparticles

Uusitalo, S. ; Kögler, Martin ; Välimaa, A.-L. ; Popov, A. ; Ryabchikov, Yu. ; Kontturi, V. ; Siitonen, S. ; Petäjä, J. ; Virtanen, T. ; Laitinen, R. ; Kinnunen, M. ; Meglinski, I. ; Kabashin, A. ; Bunker, A. ; Viitala, T. ; Hiltunen, J. (2016)

The rapid and accurate detection of food pathogens plays a critical role in the early prevention of foodborne epidemics. Current bacteria identification practices, including colony counting, polymerase chain reaction (PCR) and immunological methods, are time consuming and labour intensive; they are not ideal for achieving the required immediate diagnosis. Different SERS substrates have been stu...

Functional inhibition of acid sphingomyelinase by Fluphenazine triggers hypoxia-specific tumor cell death

Klutzny, Saskia ; Lesche, Ralf ; Keck, Matthias ; Kaulfuss, Stefan ; Schlicker, Andreas ; Christian, Sven ; Sperl, Carolyn ; Neuhaus, Roland ; Mowat, Jeffrey ; Steckel, Michael ; Riefke, Björn ; Prechtl, Stefan ; Parczyk, Karsten ; Steigemann, Patrick (2017)

Owing to lagging or insufficient neo-angiogenesis, hypoxia is a feature of most solid tumors. Hypoxic tumor regions contribute to resistance against antiproliferative chemotherapeutics, radiotherapy and immunotherapy. Targeting cells in hypoxic tumor areas is therefore an important strategy for cancer treatment. Most approaches for targeting hypoxic cells focus on the inhibition of hypoxia adap...

Evaluating Sustainable Development from a Child's Perspective - A Proposal of Sustainable Child Development Index (SCDI)

Chang, Ya-Ju ; Finkbeiner, Matthias (2016)

In Social Life Cycle Assessment (SLCA), the UNEP guideline proposes the five stakeholder groups to investigate the corresponding social issues from a whole-population perspective. Despite the relevance of children in inheriting and forming the society in the context of sustainable development, children are neglected as a relevant stakeholder group. To consider children's interests and influence...

Adapting Ergonomic Assessments to Social Life Cycle Assessment

Chang, Ya-Ju ; Nguyen, The Duy ; Finkbeiner, Matthias ; Krüger, Jörg (2016)

In Social Life Cycle Assessment (SLCA), the health and safety aspect of workers is usually evaluated by considering the numbers of injuries and accidents; however, the work related musculoskeletal disorders (MSDs), which dominate occupational diseases, are often neglected in SLCA since the effects do not occur immediately. Thus, the MSDs lead to increased working absences and compensation costs...

Against the Odds: The Potential of Swarm Electrification for Small Island Development States

Koepke, Mathias ; Groh, Sebastian (2016)

The paper builds on earlier observations using system complexity theory to explain the characteristics of a swarm electrification approach using existing small, distributed renewable energy generation infrastructure integrated into a grid. The concept is based on swarm intelligence where information and electricity flow between neighbors to achieve a compounding network effect, in that they are...

High resolution pore size analysis in metallic powders by X-ray tomography

Heim, Korbinian ; Bernier, F. ; Pelletier, R. ; Lefebvre, L.-P. (2016)

The deployment of additive manufacturing processes relies on part quality, specifically the absence of internal defects. Some of those defects have been associated with porosities in the powder feedstock. Since the level of porosity in the powder is generally very low, standard characterisation techniques such as pycnometry and metallography are not suitable for quantification. However, the qua...

Greenhouse gases emissions in a semi-arid reservoir in Northeastern Brazil

Rodríguez Góngora, Maricela (2018)

Total emissions of the greenhouse gases (GHG) carbon dioxide (CO2) and methane (CH4) from the Itaparica, a semi-arid reservoir, were estimated about 2.3 × 105 ± 0.75 × 105 t C yr-1 or 1.33 × 106 ± 0.45 × 106 t CO2-eq yr-1. Diffusion across the water surface was the main pathway accounting for 96 % of total carbon emissions. Ebullition was limited to littoral areas. A slight accumulation of CO2,...

Farbentwicklung von Destillaten mit Holzkontakt

Höfer, Christine (2018)

In der vorliegenden Arbeit werden die Auswirkungen von in der Praxis gängigen Variationen der Destillatlagerung in Holzfässern auf die Farbentwicklung dieser Getränke untersucht. Damit wird ein weit gespannter und differenzierter Beitrag zur Schließung der bestehenden Wissenslücke geleistet. Über die Einflüsse der Rahmenbedingungen Holzart, Fassgröße, Toasting oder Lagertemperatur hinaus werden...

Dynamik der Zuckertautomerie und ihr Einfluss auf die Kinetik der Maillard-Reaktion

Kaufmann, Martin (2018)

Die Maillard-Reaktion wird im Allgemeinen als aminokatalysierte Zuckerabbaureaktion verstanden. Dabei kondensiert ein primäres bzw. sekundäres Amin mit einem reduzierenden Zucker und wird im weiteren Reaktionsverlauf zunächst unverändert wieder abgespalten. Gleichzeitig kommt es zu Veränderungen am Zuckergrundgerüst und zu einer Färbung der Reaktionslösung. Welcher elementare Reaktionsschritt d...

Invertebraten in Trinkwasserverteilungssystemen

Michels, Ute (2018)

The central theme of this dissertation is the presence of invertebrates in drinking water distribution systems. The presented analyses are based on investigations in various drinking water networks during the 2003-2015 period, primarily conducted as part of water management monitoring programs. Some data was collected in the framework of the "Development of a mobile sampling and measuring syste...

Characterization of the Cradle to Cradle Certified™ Products Program in the context of eco-labels and environmental declarations

Minkov, Nikolay ; Bach, Vanessa ; Finkbeiner, Matthias (2018-03-07)

(1) Background: The Cradle to Cradle Certified™ Products Program (C2C Certified for short) is a scheme for the certification of products that meet the criteria and principles of the Cradle to Cradle® design approach. The objective of this paper is to characterize C2C Certified as an instrument for external communication in the context of environmental labeling and declarations. (2) Method: An e...