Fakultäten & Zentralinstitute

6161 Items

Recent Submissions
High throughput modules for performance and mechanism assessment of flame retardants in polymeric materials

Rabe, Sebastian (2017)

Due to the ever-increasing number of additives, adjuvants, synergists, and fillers, together with variations in concentration, particle size distribution and other modifications, methods for accelerated assessment of flame retarded polymeric materials are strongly needed. This work presents two novel approaches to assess the rapid screening of flame retardants in polymeric materials. Furthermor...

In silico Toxizitätsvorhersage der hitzebedingten Lebensmittelkontaminanten 3-MCPD, 2-MCPD und 2-MCPD-Dipalmitat und anschließende vergleichende proteomische Analyse substanzinduzierter molekularer Veränderungen in Leber, Niere, Hoden und Herz der Ratte

Frenzel, Falko (2017-11)

Die Entdeckung einer Vielzahl an Produkten der Maillard-Reaktion und Lipidoxidation in einem breiten Spektrum an zubereiteten Lebensmitteln wie etwa Grillgut, Kaffee, Pflanzenölen und erhitztem Getreide setzte die behördlichen Verbraucherschützer unter Druck. In Ermangelung hinreichender Daten zu toxikologischen Eigenschaften ist eine adäquate Risikobewertung für viele hitzebedingte Lebensmitte...

Multimethod metrology of multilayer mirrors using EUV and X-Ray radiation

Haase, Anton (2017)

Multilayer mirrors for the extreme ultraviolet (EUV) spectral range are essential optical elements of next-generation lithography systems and in scientific applications, e.g. water window microscopes. Their failure so far to reach theoretically predicted peak reflectivity values significantly hinders their applicability and raises the question of the reasons behind that limited performance. Thi...

Automatic detection and assessment of swallowing based on bioimpedance and electromyography measurements

Nahrstaedt, Holger (2017)

Schluckstörungen komplizieren für die Betroffenen jegliche Nahrungs- und Flüssigkeitsaufnahme und können zu folgenschweren Erkrankungen führen. Durch den Verlust eines normalerweise perfekt koordinierten Zusammenspiels der Muskulatur wird der Kehlkopf und das Zungenbein nicht weit genug oder im falschen Augenblick nach oben und vorne gezogen. Dadurch wird der Zugang zu den unteren Atemwegen nic...

Photolumineszenz- und Raman-Spektroskopie von zweidimensionalem MoS2

Scheuschner, Nils (2017)

In this work the electronic and vibrational properties of two-dimensional molybdenum disulfide (MoS2) are examined using Raman- and photoluminescencespectroscopy (PL). Spatially resolved measurements of suspended MoS2 and Si/SiO2 supported MoS2 show an increase of the charge carrier concentration of the MoS2 in the supported areas. Furthermore the indirect band gap energy of bilayer MoS2 is dec...

Studien zur endogenen Expression von RNA G-Quadruplexen und deren Interaktion mit zellulären Proteinen

Serikawa, Tatsuo (2017)

Due to specific orientation of guanine molecules certain guanine-rich sequences can form inter- or intramolecular structures, known as Guanine (G)-quadruplexes (G4s or GQs). Over the last 10 years, it has been shown several times that RNA G-quadruplexes located in the 5´ UTR of the mRNA suppress translation, however, a recent study indicated that in eukaryotic cells RNA G-quadruplexes are globa...

Three-dimensional modeling of wind- and temperature-induced flows in the Icó-Mandantes Bay, Itaparica Reservoir, NE Brazil

Matta, Elena ; Selge, Florian ; Gunkel, Günter ; Hinkelmann, Reinhard (2017)

The Icó-Mandantes Bay is one of the major branches of the Itaparica Reservoir (Sub-Middle São Francisco River, Northeast Brazil) and is the focus of this study. Besides the harmful algae blooms (HAB) and a severe prolonged drought, the bay has a strategic importance—e.g., the eastern channel of the newly built water diversion will withdraw water from it (drinking water). This article presents t...

Unconventional magnetic properties of low-dimensional antiferromagnets BaNi2V2O8 and BaCu2V2O8

Klyushina, Ekaterina (2017)

This work explores the magnetic properties of two novel compounds BaCu2V2O8 and BaNi2V2O8 which both provide rare physical realizations of model magnetic systems that are characterized by unconventional magnetic behaviour at finite temperatures. BaNi2V2O8 has an ideal honeycomb crystal structure where S=1 nickel magnetic ions are arranged on well isolated honeycomb layers. The nearest neighbour...

Vergleichende Beschreibung im Verkehr am Beispiel des differenzierten Stadtschnellbahnverkehrs in Ballungsräumen

Blome, Christian (2017)

Der Öffentliche Personennahverkehr unterliegt zeitlich schwankender Nachfrage. In Zeiten erhöhter Nachfrage wird zur Befriedigung der Verkehrsbedürfnisse das Angebot ausgeweitet. Übliche Mittel dazu sind einerseits der Einsatz von Formationen mit größerer Kapazität, soweit dies systemtechnisch möglich ist, und andererseits eine Verdichtung des Fahrtenangebotes. Diese klassischen Verdichtungspri...

Analysing the impacts of various environmental parameters on the biodiversity status of major habitats

Winter, Lisa ; Berger, Markus ; Minkov, Nikolay ; Finkbeiner, Matthias (2017)

Anthropogenic impacts on the environment often result in loss of biodiversity. However, the effects of different parameters (such as soil pH) on biodiversity, which can be influenced by human activities, are poorly investigated on a global scale. The paper at hand proposes an approach to examine the relationship between biodiversity and several parameters, which can be anthropogenically influen...

Assessing the depth of cognitive processing as the basis for potential user-state adaptation

Nicolae, Irina-Emilia ; Acqualagna, Laura ; Blankertz, Benjamin (2017)

Objective: Decoding neurocognitive processes on a single-trial basis with Brain-Computer Interface (BCI) techniques can reveal the user's internal interpretation of the current situation. Such information can potentially be exploited to make devices and interfaces more user aware. In this line of research, we took a further step by studying neural correlates of different levels of cognitive pro...

Comparative study of two dynamics-model-based estimation algorithms for distributed drive electric vehicles

Zhang, Xudong ; Göhlich, Dietmar ; Fu, Chenrui (2017)

The effect of vehicle active safety systems is subject to the accurate knowledge of vehicle states. Therefore, it is of great importance to develop a precise and robust estimation approach so as to deal with nonlinear vehicle dynamics systems. In this paper, a planar vehicle model with a simplified tire model is established first. Two advanced model-based estimation algorithms, an unscented Kal...

Overcoming barriers to successfully commercializing carbon dioxide utilization

Kant, Marvin (2017)

The successful transition to a low-carbon economy hinges on innovative solutions and collaborative action on a global scale. Sustainable entrepreneurship is thereby recognized as a key driver in the creation and transformation of ecologically and socially sustainable economic systems. The purpose of this article is to contribute to this topic by understanding commercialization barriers for stro...

Hospital volume and mortality for 25 types of inpatient treatment in German hospitals

Nimptsch, Ulrike ; Mansky, Thomas (2017)

Objectives To explore the existence and strength of a relationship between hospital volume and mortality, to estimate minimum volume thresholds and to assess the potential benefit of centralisation of services. Design Observational population-based study using complete German hospital discharge data (Diagnosis-Related Group Statistics (DRG Statistics)). Setting All acute care hospitals in...

Dynamical modelling of hydraulic excavator considered as a multibody system

Mitrev, Rosen ; Janošević, Dragoslav ; Marinković, Dragan (2017)

This paper considers the development of a plane multibody mechanical model of a hydraulic excavator simultaneously containing an open kinematic chain and closed loops. The Lagrange multiplier technique is used for modelling of the constrained mechanical systems. This approach is used for working out the dynamic equations of excavator motion in the case of performing transportation and digging o...

Integrated diabetes care delivered by patients

Struckmann, Verena ; Barbarella, Francesco ; Dimova, Antoniya ; Ginneken, Ewout van (2017)

Increasing numbers of persons are living with multiple chronic diseases and unmet medical needs in Bulgaria. The Bulgarian ‘Diabetic care’ non-profit (DCNPO) programme aims to provide comprehensive integrated care focusing on people with diabetes and their co-morbidities. Methods: The DCNPO programme was selected as one of eight ‘high potential’ programmes in the Innovating Care for People ...

Distributed log analysis for scenario-based detection of multi-step attacks and generation of near-optimal defense recommendations

Kaynar, Kerem (2017)

Detecting related, ongoing actions of attackers is significant for providing a complete situational assessment of security and determining the most effective reactive defense measures for a network. The logs generated by software running across the network can be used for this purpose, since they may contain the traces of malicious activities occurring inside the network. Primary logs that indi...

On the use of MLDS in the study of depth and lightness perception

Aguilar Cornejo, Guillermo Andres (2017)

An open question in vision research is how to measure the perceptual dimension evoked by the stimulus in a reliable way. Although a variety of psychophysical procedures are available, it is still a challenge to find methods that are efficient and avoid critical confounds, such as strategies triggered by difficult and unnatural tasks used by discrimination methods. In this doctoral thesis I prop...

An alternative perspective on IP management

Potekhina, Anna (2017)

The intellectual property rights (IPR) appropriation from the company’s perspective is, first of all, associated with coordinated actions on obtaining and enforcing of the respective intellectual property rights, such as patents, utility models, industrial designs, trademarks, copyright and trade secrets. In developed economies with strong intellectual property (IP) systems companies traditiona...

Magnetic properties of rare earth zirconate pyrochlores

Xu, Jianhui (2017)

Diese Dissertation behandelt experimentelle Untersuchungen an drei magnetischen Pyrochloren, Nd2Zr2O7, Sm2Zr2O7 and Gd2Zr2O7. Es wurden einkristalline und pulverförmige Proben hergestellt wobei die zwei erstgenannten Substanzen in der Pyrochlor Struktur kristallisieren, während Gd2Zr2O7 einige Platzwechsel-Defekte von Gd/Zr aufweist. Alle Verbindungen zeigen in den makroskopischen Eigenschaften...