A5039827585- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Catalysis and Oxidation Reactions
- Catalytic Processes in Materials Science
- Multisensory perception and integration
- Image and Video Quality Assessment
- Catalytic Alkyne Reactions
- Oxidative Organic Chemistry Reactions
- Neural dynamics and brain function
- Color perception and design
- Visual perception and processing mechanisms
- Hearing Loss and Rehabilitation
- Synthetic Organic Chemistry Methods
- EEG and Brain-Computer Interfaces
- Blind Source Separation Techniques
- Electrochemical Analysis and Applications
- Perovskite Materials and Applications
- Various Chemistry Research Topics
- Radioactive element chemistry and processing
- Conducting polymers and applications
- Zeolite Catalysis and Synthesis
- Thermal and Kinetic Analysis
- Organic Electronics and Photovoltaics
- Organoboron and organosilicon chemistry
- Ionic liquids properties and applications
Johannes Gutenberg University Mainz
2020-2022
Technische Universität Berlin
2009-2021
Universitäts-HNO-Klinik Heidelberg
2018-2021
University of Applied Sciences Mainz
2020-2021
Norwegian University of Science and Technology
2016-2020
Heidelberg University
2013-2019
Université Libre de Bruxelles
2019
Heidelberg University
2019
Deutsche Telekom (United Kingdom)
2011-2016
Fraunhofer Institute for Production Systems and Design Technology
2012-2014
Li/MgO is one of the most frequently investigated catalysts for oxidative coupling methane. Besides catalytic testing, it also a suitable system to perform surface science experiments and quantum chemical calculations, which not possible many other active catalysts. However, real structure Li/MgO, nature center - activity relationship remain unclear, despite all research that has been done. The aim this review summarize available knowledge on accelerate improve ongoing work system.
We present a survey of psychophysiology-based assessment for quality experience (QoE) in advanced multimedia technologies. provide classification methods relevant to QoE and describe related psychological processes, experimental design considerations, signal analysis techniques. summarize multimodal techniques discuss several important aspects assessment, including the synergies with psychophysical need standardized design. This is not considered be exhaustive but serves as guideline those...
High-grade periodate is relatively expensive, but required for many sensitive applications such as the synthesis of active pharmaceutical ingredients. These high costs originate from using lead dioxide anodes in contemporary electrochemical methods and expensive starting materials. A direct cost-efficient iodide, which less costly relies on a readily available material, reported. The oxidation conducted at boron-doped diamond anodes, are durable, metal-free, nontoxic. avoidance ultimately...
In this paper, we defined and measured two types of immersion, namely, spatial immersion emotional on flat 2D screen displays using a 33-item questionnaire. Our results show that is significantly more immersive than in terms sense "being there", time perception, realism, engagement, aspects, sensory cues, etc. Spatial almost as emotion attention image motion, dis-orientation. also there are individual differences the perception immersion. Finally, linked parameters measurement with QoE...
Common speech quality evaluation methods rely on self-reported opinions after perceiving test stimuli. Whereas these methods-when carefully applied-provide valid and reliable indices, they provide little insight into the processes underlying perception judgment. In this paper, we analyze performance of electroencephalography (EEG) for indicating different types degradations in We show that a certain EEG technique, event-related-potentials (ERP) analysis, is useful tool research. Three...
The oxidative coupling of methane is a highly promising reaction for its direct conversion.
Using less bandwidth on the one hand and delivering high quality content other is of big goals for video service providers. Standardized rating tests are commonly used to quantify audiovisual quality. In order better understand neuronal processes underlying these ratings physiological measures may provide insights. This paper shows results a series studies using measurement, namely electroencephalography (EEG), combined with standard methods. The experiments follow an incremental approach in...
The catalytic system Mn–Na<sub>2</sub>WO<sub>4</sub>/SiO<sub>2</sub>, was studied in a miniplant fluidized-bed reactor for oxidative coupling of methane.
The synthesis of substituted 2-cyclopentenones using a commercially available gold(I) catalyst is described under flexible reaction conditions. During the course our investigations, we discovered that proton source as an additive required to obtain desired cyclopentenones in good yields.
Abstract Four π‐extended phosphoniumfluorene electrolytes (π‐PFEs) are introduced as hole‐blocking layers (HBL) in inverted architecture planar perovskite solar cells with the structure of ITO/PEDOT:PSS/MAPbI 3 /PCBM/HBL/Ag. The deep‐lying highest occupied molecular orbital energy level π‐PFEs effectively blocks holes, decreasing contact recombination. It is demonstrated that incorporation introduces a dipole moment at PCBM/Ag interface, resulting significant enhancement built‐in potential...
An emerging interest for the application of periodate in synthesis active pharmaceutical ingredients (APIs) and valorization renewable feedstock is eminent. However, exhibits a high molecular mass, expensive compared to other common bulk-oxidizers used only reluctantly technical applications. Recently, new green electrochemical was established. The preparation regeneration method lowers costs enables use regulated products. This review will briefly introduce key innovations survey most...
The synthesis of aurated phosphindolium complexes from easy accessible 1,5-alkynylphosphine derivatives has been studied by using gold(I) featuring carbene and phosphine ligands as initiators. Upon formation the mixed NHC/phosphine gold species, elevated temperatures induced cyclization to give stable salts, which is supported DFT calculations. key elementary step that comprises a yet unknown anti-phosphinoauration an unactivated alkyne favored if bulky NHC are used was analyzed kinetic...
In the area of Quality Experience (QoE), one challenge is to design test methodologies in order evaluate perceived quality multimedia content delivered through technical systems. Traditionally, this evaluation done using subjective opinion tests. However, sometimes it difficult for observers communicate experienced given scale. Furthermore, those tests do not give insights into how user reacting on an internal physiological level. To overcome these issues, approach use measures, derive a...
Levetiracetam is an active pharmaceutical ingredient widely used to treat epilepsy.
Common methods to determine the quality of media rely on conscious ratings a subject's opinion about presented stimuli. While such provide reliable and valid means determining quality, they little insight into physiological processes preceding judgment, which, however, may affect subjective behavior, e.g., in terms alertness or usage duration. In this paper we used non-intrusive method, electroencephalography, assess cognitive state subjects related auditory speech We show that users...
Technology is advancing rapidly in the domain of virtual reality, as well using sensors to gather feedback from our body and environment we are interacting in. Combining these two technologies gives us opportunity create personalized reactive immersive environments. These environments can be used for training dangerous situations (e.g. fire, crashes, etc) or improve skills with less distraction than regular natural would offer. The pilot study described this paper, puts an athlete rowing on...
The subjective evaluation of video quality mostly relies on opinion tests in which test participants judge perceived rating scales. However, these methods provide limited insight how the judgments are being formed brain. In past studies we showed general feasibility to complement with physiological measures, as electroencephalography (EEG), for pure and audio experiments. To establish EEG a reliable measurement method standard tests, next step is validate audiovisual domain. For this purpose...