655 research outputs found
Harry Friebel/Heinrich Epskamp/Roswitha Friebel/Stephan Toth: Bildungsidentität. Zwischen Qualifikationschancen und Arbeitsplatzmangel. Eine Längsschnittuntersuchung. Opladen: Leske Budrich 1996 [Rezension]
No full textRezension von: Harry Friebel/Heinrich Epskamp/Roswitha Friebel/Stephan Toth: Bildungsidentität. Zwischen Qualifikationschancen und Arbeitsplatzmangel. Eine Längsschnittuntersuchung. Opladen: Leske Budrich 1996, 101 S
What to Measure and How to Measure - Otpical Sensing
No full textWhat to Measure and How to Measure - Otpical Sensin
CO2-laser optical lattice with cold rubidium atoms
No full textLaser-cooled rubidium atoms have been trapped in a nondissipative optical lattice with a large lattice constant. The lattice potential is generated by the ac Stark shift in an infrared standing wave near 10.6 mu m. The atoms are confined in steep potential wells with a periodicity of several micrometers. By modulating the potential depth we parametrically excite the atoms and measure their vibrational frequencie
Virus Neutralizing and Enhancing Epitopes Characterized by Synthetic Oligopeptides Derived from the Feline Leukaemia Virus Glycoprotein Sequence
No full textAggregatibacter actinomycetemcomitans induces biofilm formation of Streptococcus sanguinis on titanium implants
No full textAbstract Purpose This study aims to investigate the distinct behaviors of single-species and dual-species biofilms formed by Streptococcus sanguinis and Aggregatibacter actinomycetemcomitans on different titanium and implant surfaces. Four types of surfaces were examined: two clinically used implant surfaces, a super-polished surface and a sand-blasted surface of grade 4 titanium. Methods Specimens were incubated with single- and dual-species biofilms for 24 h. Biofilm formation was determined based on the amount of total DNA extracted from the bacteria. In order to specifically determine the biofilm formation of Streptococcus sanguinis, qPCR experiments were carried out. Staining followed by fluorescence microscopy was employed to verify the efficiency of the washing steps. Results Biofilm formation by single- and dual-species cultures was observed on all tested implant surfaces. However, a clear influence of surface characteristics on biofilm formation could not be conclusively demonstrated. Mixed cultures of S. sanguinis and A. actinomycetemcomitans (AAC) exhibited increased biofilm formation through the enhanced DNA amount of S. sanguinis. In contrast, this effect was not observed in dual-species cultures of Staphylococcus epidermidis and S. sanguinis. Conclusion AAC promotes biofilm formation of S. sanguinis, highlighting the significant role of AAC in enhancing biofilm development. Conversely, a definitive conclusion regarding the correlation between titanium implant surface roughness and biofilm formation was not possible. However, our results suggest a tendency that dual-species biofilm formation may be influenced by surface structure.Open-Access-Publikationsfonds 202
Data for the publication "Impact of Isolated Atmospheric Aging processes on the Cloud Condensation Nucleiactivation of Soot Particles"
No full textThe repository contains the data for the paper:
Friebel, F.; Lobo, P.; Neubauer, D.; Lohmann, U.; Drossaart van Dusseldorp, S.; Mühlhofer, E.; Mensah, A. A. Impact of Isolated Atmospheric Aging Processes on the Cloud Condensation Nuclei-Activation of Soot Particles. Atmos. Chem. Phys. Discuss. 2019, No. June, 1–28. https://doi.org/10.5194/acp-2019-504.
Note that the scripts to plot this data are to be found in the accompanying package (http://dx.doi.org/10.5281/zenodo.3452036)</p
Generative Transcriptions: An Opera of the Self
No full textThe techniques which I developed for my work between 2009-12 are a consequence of my own unique mix of synaesthetic sensibilities. I have sought to investigate these innate impulses in order to formulate a deeper understanding of my compositional process and define technical strategies that I have termed generative transcriptions.
In this thesis I focus on CANTO MORPH, ‘an opera of the self’, a project in multiple parts exploring processes of embodiment, association and dissociation. It is realised through the media of recorded improvisation, a 45-minute scored composition, a virtual architecture, a media installation, a video installation and a sculptural libretto.
This project as ‘an opera of the self’ is located in an experiential process comprising several stages:
1/ I perform a series of improvisations in a trance-like state using various instruments and my own voice to create multi-layered recordings – trance improvisation mix.
2/ These recordings are subjected to analytical transcription which I understand as a process of reverse engineering akin to the process that architects employ whereby complex 3-dimensional structures of buildings are analysed and explored diagrammatically in order to discover what kind of essence might be contained in the blueprint of its built form. I cite Xenakis’ Philips Pavilion and the dual nature of composition/architecture that is embodied within this design. This process inspires my own methodology, where mimetic scripts are created from the trance improvised mix and then refined and further manipulated into a score that can be performed.
3/ The improvisation-analysis-composition process which can broadly be conceived as an ‘embodiment of self’ is subjected to another stage in which I create a new body – a re-embodiment in which to site the work architecturally.
In exploring the multi-modal approach that is represented by the CANTO MORPH, I have underpinned a novel and multi-facetted way to approach a compositional practice, where through synaesthetic empowerment, a myriad of forces enable an emergent compositional method of generative transcriptions
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