A. Herrmann

Publication List Details

Period

1984 - 2009

Number

358

Co-Authors

Fabrication of fluorescent nanoparticles of dendronized perylenediimide by laser ablation in water (2008)

Asahi, T, Sugiyama, T, Masuhara, H, Sliwa, M, ...

Highly fluorescent organic nanoparticles with size of about 300 nm were prepared by nanosecond laser ablation of micrometer-sized powder of dendronized perylenediimide dispersed in water. The...

Qualitätsrisiken und deren Abhängigkeiten (2008)

Herrmann, A.

Es hat sich bewährt, Softwarequalität anhand von Qualitätsrisiken zu beschreiben, d.h. anhand derjeniger Ereignisse oder Zustände, die man durch die Qualitätseigenschaft vermeiden möchte. In...

Investigation of the Release of Bioactive Volatiles from Amphiphilic Multiarm Star-Block Copolymers by Thermogravimetry and Dynamic Headspace Analysis (2008)

Ternat, C., Ouali, L., Sommer, H., Fieber, W., Velazco, M. I., Plummer, C. J. G., ...

Amphiphilic multi-arm star block copolymers with a hydrophobic inner and a hydrophilic outer shell have been used to encapsulate hydrophobic volatile fragrances in aqueous media under realistic...

Investigation of the Release of Bioactive Volatiles from Amphiphilic Multiarm Star-Block Copolymers by Thermogravimetry and Dynamic Headspace Analysis (2008)

Ternat, C., Ouali, L., Sommer, H., Fieber, W., Velazco, M. I., Plummer, C. J. G., ...

Amphiphilic multiarm star-block copolymers with a hydrophobic inner and a hydrophilic outer shell have been used to encapsulate hydrophobic bioactive volatiles in aqueous media under realistic...

Requirements Prioritization Based on Benefit and Cost Prediction: An Agenda for Future Research (2008)

Herrmann, A., Daneva, M.

In early phases of the software cycle, requirements prioritization necessarily relies on the specified requirements and on predictions of benefit and cost of individual requirements. This paper...

Requirements Prioritization Based on Benefit and Cost Prediction: A Method Classification Framework (2008)

Daneva, M., Herrmann, A.

In early phases of the software development process, requirements prioritization necessarily relies on the specified requirements and on predictions of benefit and cost of individual requirements....

Amphiphilic multi-arm star-block copolymers for the encapsulation of hydrophobic guest molecules (2007)

Ternat, C., Kreutzer, G., Plummer, C. J.G., Nguyen, T. Q., Herrmann, A., Ouali, L., ...

Novel amphiphilic multi-arm star-block copolymers with a hyperbranched core, a hydrophobic inner shell, and a hydrophilic outer shell have been prepared from a commercial hyperbranched polyester...

Exploring the characteristics of NFR methods - a dialogue about two approaches (2007)

Herrmann, A., Kerkow, D., Doerr, J.

It is not easy to choose a method for eliciting, detailing and documenting non-functional requirements (NFR) among the variety of existing methods. In order to explore typical characteristics of such...

Amphiphilic multi-arm star-block copolymers for encapsulation of fragrance molecules (2007)

Ternat, C., Kreutzer, G., Plummer, C. J. G., Nguyen, T. Q., Herrmann, A., Ouali, L., ...

Novel amphiphilic multi-arm star-block copolymers with a hyperbranched core, a hydrophobic inner shell, and a hydrophilic outer shell have been prepared from a commercial hyperbranched polyester...

NMR diffusion and relaxation studies of the encapsulation of fragrances by amphiphilic multiarm star block copolymers (2007)

Fieber, W., Herrmann, A., Ouali, L., Velazco, M. I., Kreutzer, G., Klok, H. A., ...

Self-diffusion NMR spectroscopy and relaxometry have been employed to study fragrance encapsulation in water-soluble, amphiphilic star block copolymers. Diffusion coefficients of four different...

Sheath heat transmission factors on TCV (2007)

Marki, J., Pitts, R. A., Eich, T., Herrmann, A., Horacek, J., Sanchez, F., ...

Despite its importance in determining the calculated surface power flux predicted, for example, by scrape-off layer simulation codes, the sheath heat transmission factor, gamma remains a quantity...

Transient heat loads in current fusion experiments, extrapolation to ITER and consequences for its operation (2007)

Loarte, A., Saibene, G., Sartori, R., Riccardo, V., Andrew, P., Paley, J., ...

New experimental results on transient loads during ELMs and disruptions in present divertor tokamaks are described and used to carry out a extrapolation to ITER reference conditions and to draw...

Chapter 4: Power and particle control (2007)

Loarte, A., Lipschultz, B., Kukushkin, A. S., Matthews, G. F., Stangeby, P. C., Asakura, N., ...

Progress, since the ITER Physics Basis publication (ITER Physics Basis Editors et al 1999 Nucl. Fusion 39 2137-2664), in understanding the processes that will determine the properties of the plasma...

Divertor power deposition and target current asymmetries during type-1 ELMS in ASDEX Upgrade and JET (2007)

Eich, T., Kallenbach, A., Pitts, R. A., Jachmich, S., Fuchs, J. C., Herrmann, A., ...

Analysis of the type-l ELM power load asymmetries using infra-red thermography and target current measurements is performed ASDEX Upgrade Upper Single Null and JET DOC-L type-I ELMy H-Mode discharges...

ELM resolved energy distribution studies in the JET MKII Gas-Box divertor using infra-red thermography (2007)

Eich, T., Andrew, P., Herrmann, A., Fundamenski, W., Loarte, A., Pitts, R. A.

Using infra-red (IR) thermography, power loads onto the MKII Gas-Box divertor targets have been investigated in Type-I ELMy H-Mode plasmas at JET in medium current discharges (I-p = 2.6MA and B-T =...

Transient heat loads in current fusion experiments, extrapolation to ITER and consequences for its operation. (2007)

Loarte, A., Saibene, G., Sartori, R., Riccardo, V., Andrew, P., Paley, J., ...

11th Internat.Workshop on Plasma-Facing Materials and Components for Fusion Applications, Greifswald, October 10-12, 2006

A Perspective on Managing Educational Technology Change (2006)

Herrmann, A

Technological change in the teaching and learning activities of research intensive universities is an evolutionary process. While, to date, much adoption of technology in these contexts has been ad...

Visualizing spatial and temporal heterogeneity of single molecule rotational diffusion in a glassy polymer by defocused wide-field imaging (2006)

Melnikov, SM, Bergamini, G, Herrmann, A, ...

Defocused wide-field fluorescence microscopy was used to follow the 3D molecular rotational diffusion of a fluorescent probe molecule in a polymer thin film. The technique allows for visualizing the...

Water-soluble, unimolecular containers based on amphiphilic multiarm star block copolymers (2006)

Kreutzer, G., Ternat, C., Nguyen, T. Q., Plummer, C. J. G., Manson, J. A. E., Castelletto, V., ...

A new class of water-soluble, amphiphilic star block copolymers with a large number of arms was prepared by sequential atom transfer radical polymerization (ATRP) of n-butyl methacrylate (BMA) and...

Survey of Type I ELM dynamics measurements (2006)

Leonard, A. W., Asakura, N., Boedo, J. A., Becoulet, M., Counsell, G. F., Eich, T., ...

This report summarizes Type I edge localized mode (ELM) dynamics measurements from a number of tokamaks, including ASDEX-Upgrade, DIII-D, JET, JT-60U and MAST, with the goal of providing guidance and...

Overview of ASDEX Upgrade results-development of integrated operating scenarios for ITER (2005)

Günter, S., Angioni, C., Apostoliceanu, M., Atanasiu, C., Balden, M., Becker, G., ...

This article based on the 2004 Fusion Energy Conference contribution (Vilamoura, Portugal, 1-6 November 2004)

Polyphenylene dendrimers as scaffolds for shape-persistent multiple peptide conjugates (2005)

Mihov, G., Grebel-Koehler, D., Lübbert, A., Vandermeulen, G.W.M., Herrmann, A., Müllen, K., ...

The present work describes synthetic concepts for the coupling of peptides to polyphenylene dendrimers (PPDs). Novel functionalized cyclopentadienones have been synthesized whose Diels-Alder...

Integrated exhaust scenarios with actively controlled ELMs (2005)

Lang, P. T., Kallenbach, A., Bucalossi, J., Conway, G. D., Degeling, A., Dux, R., ...

An integrated radiative high performance scenario has been established at ASDEX Upgrade based on simultaneous feedback control of the average divertor neutral particle and power flux in combination...

Power deposition onto plasma facing components in poloidal divertor tokamaks during type-I ELMS and disruptions (2005)

Eich, T., Herrmann, A., Pautasso, G., Andrew, P., Asakura, N., Boedo, J. A., ...

A comparative analysis of the spatial and temporal characteristics of transient energy loads (ELMs and disruptions) on plasma facing components (PFCs) in present tokamak devices and their...

Outer divertor target deposited layers during reversed magnetic field operation in JET (2005)

Andrew, P., Coad, J. P., Corre, Y., Eich, T., Herrmann, A., Matthews, G. F., ...

Divertor surface temperatures are significantly affected by the presence of deposited surface layers. This phenomenon can be used to monitor deposited layer evolution on a shot-by-shot basis. It was...

The Helmholtz Network for Bioinformatics: an integrative web portal for bioinformatics resources (2004)

Crass, T., Antes, I., Basekow, R., Bork, P., Buning, C., Christensen, M., ...

The Helmholtz Network for Bioinformatics (HNB) is a joint venture of eleven German bioinformatics research groups that offers convenient access to numerous bioinformatics resources through a single...

Designing MEMS for manufacturing (2004)

Wolter, A., Herrmann, A., Yildiz, G., Schenk, H., Lakner, H.

MEMS (micro electro-mechanical systems) are often expected to take a development as microelectronics did in the last 35 years. Several devices are already established in mass markets like...

The Helmholtz Network for Bioinformatics: an integrative web portal for bioinformatics resources (2004)

Crass, T., Antes, I., Basekow, R., Bork, P., Buning, C., Christensen, M., ...

The Helmholtz Network for Bioinformatics (HNB) is a joint venture of eleven German bioinformatics research groups that offers convenient access to numerous bioinformatics resources through a single...

Frequency control of type-I ELMs by magnetic triggering in ASDEX Upgrade (2004)

Lang, P. T., Degeling, A. W., Lister, J. B., Martin, Y. R., McCarthy, P. J., Sips, A. C. C., ...

Magnetic triggering of edge localized modes (ELMs) was reported first from TCV in ohmic plasmas showing type-III ELMs. This method, showing successful locking of the ELM frequency to an imposed...

Variations in cyclotide expression in Viola species (2004)

Trabi, M., Svangard, E., Herrmann, A., Goransson, U., Claeson, P., Craik, D. J., ...

Cyclotides, a family of approximately 50 mini-proteins isolated from various Violaceae and Rubiaceae plants, are characterized by their circular peptide backbone and six conserved cysteine residues...

Variations in cyclotide expression in Viola species (2004)

Trabi, M., Svangard, E., Herrmann, A., Goransson, U., Claeson, P., Craik, D. J., ...

Cyclotides, a family of approximately 50 mini-proteins isolated from various Violaceae and Rubiaceae plants, are characterized by their circular peptide backbone and six conserved cysteine residues...

The Helmholtz Network for Bioinformatics: an integrative web portal for bioinformatics resources (2004)

Crass, T., Antes, I., Basekow, R., Bork, P., Buning, C., Christensen, M., ...

Summary: The Helmholtz Network for Bioinformatics (HNB) is a joint venture of eleven German bioinformatics research groups that offers convenient access to numerous bioinformatics resources through a...

Generation dependent singlet-singlet annihilation within multichromophoric dendrimers studied by polychromatic transient absorption (2003)

De Belder, G, Weil, T, ...

Intramolecular kinetic processes in a series of shape- persistent meta- and para- substituted polyphenylene dendrimers bearing different peryleneimide chromophores at the rim have been investigated...

Fluorescent self-assembled polyphenylene dendrimer nanofibers (2003)

Wiesler, UM, Weil, T, Herrmann, A, ...

A second-generation polyphenylene dendrimer 1 self-assembles into nanofibers on various substrates such as HOPG, silicon, glass, and mica from different solvents. The investigation with noncontact...

Fluorescence and intramolecular energy transfer in polyphenylene dendrimers (2003)

Wiesler, UM, Herrmann, A, ...

The fluorescence of polyphenylene dendrimers and the intramolecular energy transfer in polyphenylene dendrimers containing a perylenediimide core have been investigated in this paper. Polyphenylene...

Stationary and Transient Divertor Heat Flux Profiles and Extrapolation to ITER (2003)

Herrmann, A., Eich, T., Jachmich, S., Laux, M., Andrew, P., Bergmann, A., ...

Experimental results on divertor heat load measurements from ASDEX Upgrade and JET are discussed. Thereby three topics are considered: (i) parameter dependence of steady state heat flux profiles,...

Arcing at B4C-covered limiters exposed to a SOL-plasma (2003)

Laux, M., Schneider, W., Wienhold, P., Jüttner, B., Huber, A., Balden, M., ...

Plasma sprayed B4C-layers considered as wall coatings for the W7X stellarator have been studied during and after exposure to TEXTOR and after arcing experiments in vacuum. Arcing through the B₄C...

Steady-state and transient power handling in JET (2003)

Matthews, G. F., Andrew, P., Eich, T., Fundamenski, W., Herrmann, A., Loarte, A., ...

Steady-state and transient power deposition profiles have been measured in the JET MIIGB divertor using improved diagnostic techniques involving the use of fast infrared (IR), thermocouples and...

Peptide-functionalized polyphenylene dendrimers (2003)

Herrmann, A., Mihov, G., Vandermeulen, G. W. M., Klok, Harm-Anton, Müllen, Klaus

This contribution describes the synthesis of polyphenylene dendrimers that are functionalized with up to 16 lysine residues or substituted with short peptide sequences composed of 5 lysine or...

ELM energy and particle losses and their extrapolation to burning plasma experiments (2003)

Loarte, A., Saibene, G., Sartori, R., Becoulet, M., Horton, L., Eich, T., ...

Analysis of Type I ELMs from present experiments shows that ELM energy losses decrease with increasing pedestal plasma collisionality (ν*ped) and/or increasing τFront║, where...

Thermal effects of surface layers on divertor target plates (2003)

Andrew, P., Coad, A., Eich, T., Gauthier, E., Herrmann, A., Matthews, G. F., ...

Measurement of the heat flux to the divertor by infrared thermography is complicated by processes at the surface leading to excess IR radiation. There are at least two possible causes of the excess...

Comparing scrape-off layer and divertor physics in JET pure He and D discharges (2003)

Pitts, R. A., Andrew, P., Andrew, Y., Becoulet, C., Coffey, I., Coster, D., ...

Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has...

ELM frequency control by continuous small pellet injection in ASDEX Upgrade (2003)

Lang, P. T., Neuhauser, J., Horton, L. D., Eich, T., Fattorini, L., Fuchs, J. C., ...

Injection of cryogenic deuterium pellets has been successfully applied in ASDEX Upgrade for external edge localized mode (ELM) frequency control in type-I ELMy H-mode discharge scenarios. A pellet...

Energy and particle losses during type-I ELMy H-mode in ASDEX Upgrade (2003)

Urano, H., Suttrop, W., Horton, L. D., Herrmann, A., Fuchs, J. C., ASDEX Upgrade Team

Characteristics of edge-localized mode (ELM) energy and particle losses in type-I ELMy H-mode plasmas on ASDEX Upgrade are investigated by a large data set with as much as possible independent...

Fluorescence and intramolecular energy transfer in polyphenylene dendrimers (2003)

Liu, D. J., De Feyter, S., Cotlet, M., Stefan, A., Wiesler, U. M., Herrmann, A., ...

The fluorescence of polyphenylene dendrimers and the intramolecular energy transfer in polyphenylene dendrimers containing a perylenediimide core have been investigated in this paper. Polyphenylene...

Photon antibunching and collective effects in the fluorescence of single bichromophoric molecules (2003)

Hübner, C. G., Zumofen, G., Renn, A., Herrmann, A., Müllen, Klaus, Basche, T.

The fluorescence of individual pairs of perylenemonoimide chromophores coupled via a short rigid linker is investigated. Photon antibunching is reported, indicating collective effects in the...

ASDEX Upgrade - Introduction and overview (2003)

Herrmann, A., Gruber, O.

This special issue of Fusion Science and Technology is a comprehensive review of the main physical and technological results achieved with the Axial Symmetric Divertor EXperiment (ASDEX) Upgrade...

H-mode and pedestal physics in ASDEX Upgrade (2003)

Suttrop, W., Herrmann, A., Ryter, F., Stober, J. K.

Studies in ASDEX Upgrade of the phenomenology and scaling of the H-mode transition, of edge-localized modes (ELMs), and characterization of the H-mode edge transport barrier carried out in various...

Edge and divertor physics in ASDEX Upgrade (2003)

Neuhauser, J., Coster, D., Herrmann, A., Kallenbach, A.

An overview of edge and divertor physics research on ASDEX Upgrade of relevance for next-step fusion devices like ITER is presented. The results described were primarily obtained in lower single-null...

Fluorescent self-assembled polyphenylene dendrimer nanofibers (2003)

Liu, D. J., De Feyter, S., Cotlet, M., Wiesler, U. M., Weil, T., Herrmann, A., ...

A second-generation polyphenylene dendrimer 1 self-assembles into nanofibers on various substrates such as HOPG, silicon, glass, and mica from different solvents. The investigation with noncontact...

Generation dependent singlet-singlet annihilation within multichromophoric dendrimers studied by polychromatic transient absorption (2003)

Jordens, S., De Belder, G., Lor, M., Schweitzer, G., Weil, T., ...

Intramolecular kinetic processes in a series of shape- persistent meta- and para- substituted polyphenylene dendrimers bearing different peryleneimide chromophores at the rim have been investigated...

Tolerable ELMs in conventional and advanced scenarios at ASDEX Upgrade (2003)

Gruber, O., Günter, S., Herrmann, A., Horton, L. D., Lang, P. T., Maraschek, M., ...

Recent ASDEX Upgrade experiments integrated benign type II ELMs (tolerable peak heat loads on target plates) with high performance. In both conventional and advanced H-modes, the operation window...

Characteristics of type I ELM energy and particle losses in existing devices and their extrapolation to ITER (2003)

Loarte, A., Saibene, G., Sartori, R., Campbell, D., Becoulet, M., Horton, L., ...

Analysis of Type I ELMs from ongoing experiments shows that ELM energy losses are correlated with the density and temperature of the pedestal plasma before the ELM crash. The Type I ELM plasma energy...

Power deposition measurements in Deuterium and Helium discharges in JET MKIIGB divertor by IR-Thermography (2003)

Eich, T., Herrmann, A., Andrew, P., Loarte, A.

One of the outstanding problems for a next step fusion device is the handling of the power fluxes into the divertor, in particular regarding fast transient heat deposition by edge localised modes...

The ASDEX Upgrade divertor IIb—a closed divertor for strongly shaped plasmas (2003)

Neu, R., Fuchs, J. C., Kallenbach, A., Maggi, C., Rohde, V., Ryter, F., ...

A new divertor configuration (DIV-IIb) has been implemented in ASDEX Upgrade. In order to accommodate a large variety of plasma shapes with bottom triangularities (δbot) up to 0.48, the outer...

Overview of ASDEX Upgrade results (2003)

Zohm, H., Angioni, C., Arslanbekov, R., Atanasiu, C., Becker, G., Becker, W., ...

Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are presented. An improved understanding of energy and particle transport emerges in terms of a 'critical gradient' model...

Type-I ELM mode structure observed by divertor thermography in ASDEX Upgrade (2003)

Eich, T., Herrmann, A., Neuhauser, J., Günter, S., ASDEX Upgrade Team

In the ASDEX Upgrade tokamak, power deposition structures on the outer divertor target surfaces during type-I Edge Localised Modes (ELMs) have been discovered by infra red thermography. These...

Studies of ELM Heat Load, SOL Flow and Carbon Erosion from Existing Tokamak Experiments, and their Predictions to ITER (2003)

Asakura, N., Loarte, A., Porter, G., Philipps, V., Lipschultz, B., Kallenbach, A., ...

Three important physics issues for the ITER divertor design and operation are summarized based on the experimental and numerical work from multi-machine database (JET, JT-60U, ASDEX Upgrade, DIII-D,...

Peptide-functionalized polyphenylene dendrimers (2003)

Herrmann, A., Mihov, G., Vandermeulen, G.W.M., Müllen, K.

This contribution describes the synthesis of polyphenylene dendrimers that are functionalized with up to 16 lysine residues or substituted with short peptide sequences composed of 5 lysine or...

Overview of ASDEX upgrade results (2003)

Zohm, H., Angioni, C., Arslanbekov, R., Atanasiu, C., Becker, G., Becker, W., ...

Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are presented. An improved understanding of energy and particle transport emerges in terms of a 'critical gradient' model...

Overview of JET results (2003)

Pamela, J., Solano, E. R., Adams, J. M., Agarici, G., Agarici, M., Akhter, H., ...

Scientific and technical activities on JET focus on the issues likely to affect the ITER design and operation. Our understanding of the ITER reference mode of operation, the ELMy H-mode, has...

Key ITER plasma edge and plasma-material interaction issues. (2003)

Federici, G., Andrew, P., Barabaschi, P., Brooks, J., Doerner, R., Geier, A., ...

Proc. of the 15th Internat.Conf.on Plasma Surface Interactions in Controlled Fusion Devices (PSI-15), Gifu, J, May 27-31, 2002

ELM energy and particle losses and their extrapolation to burning plasma experiments. (2003)

Loarte, A., Saibene, G., Sartori, R., Becoulet, M., Horton, L., Eich, T., ...

Proc. of the 15th Internat.Conf.on Plasma Surface Interactions in Controlled Fusion Devices (PSI-15), Gifu, J, May 27-31, 2002

Generation-dependent energy dissipation in rigid dendrimers studied by femtosecond to nanosecond time-resolved fluorescence spectroscopy (2002)

De, R, ...

Intramolecular kinetic processes in a series of second-generation polyphenyl dendrimers with multiple peryleneimide chromophores attached to the para position of the outer phenyl ring were...

Overview on stationary and transient divertor heat loads (2002)

Herrmann, A.

The divertor concept and the divertor materials envisaged for ITER FEAT restrict the maximum values of the stationary and transient heat fluxes. The maximum stationary heat flux is limited by the...

Characteristics and scaling of energy and particle losses during Type I ELMs in JET H-modes (2002)

Loarte, A., Becoulet, M., Saibene, G., Sartori, R., Campbell, D. J., Eich, T., ...

Recent experiments on the Type I ELMy H-mode regime performed at JET with improved diagnostics have expanded the range of parameters for the study of Type I ELM energy and particle losses. Deviations...

Properties of the new divertor IIb in ASDEX Upgrade (2002)

Neu, R., Fuchs, J. C., Haas, G., Herrmann, A., Kallenbach, A., Laux, M., ...

A new divertor configuration (DIV IIb) has been implemented in ASDEX Upgrade. In order to accommodate a large variety of plasma shapes with bottom triangularities (delta(bot)) up to 0.48, the outer...

Transport into and across the scrape-off layer in the ASDEX Upgrade divertor tokamak (2002)

Neuhauser, J., Coster, D., Fahrbach, H. U., Fuchs, J. C., Haas, G., Herrmann, A., ...

The elements of transport into and across the scrape-off layer in the poloidal divertor tokamak ASDEX Upgrade are analysed for different operational regimes with emphasis on enhanced confinement...

ELM mitigation by nitrogen seeding in the JET gas box divertor (2002)

Rapp, J., Eich, T., Von Hellermann, M., Herrmann, A., Ingesson, L. C., Jachmich, S., ...

One of the most severe problems for fusion reactors is the power load on the divertor target plates. Technically only power loads of less than 10 MW m(-2) are acceptable. However, strong edge...

Steady state advanced scenarios at ASDEX Upgrade (2002)

Sips, A.C.C., Arslanbekov, R., Atanasiu, C., Becker, W., Becker, G., Behler, K., ...

Recent experiments at ASDEX Upgrade have achieved advanced scenarios with high beta(N) (> 3) and confinement enhancement over ITER98(y, 2) scaling, H-H98y2 = 1.1-1.5, in steady state. These...

Investigation of molecular dimers by ensemble and single molecule spectroscopy (2002)

Christ, T., Petzke, F., Bordat, P., Herrmann, A., Reuther, E., Müllen, Klaus, ...

We have investigated molecular dimers with different electronic coupling strengths by bulk and single molecule spectroscopy. In one of the dimers the two monomers (perylene-monoimide) are directly...

Generation-dependent energy dissipation in rigid dendrimers studied by femtosecond to nanosecond time-resolved fluorescence spectroscopy (2002)

Lor, M., De, R., Jordens, S., De Belder, G., Schweitzer, G., Cotlet, M., ...

Intramolecular kinetic processes in a series of second- generation polyphenyl dendrimers with multiple peryleneimide chromophores attached to the para position of the outer phenyl ring were...

Conformational rearrangements in and twisting of a single molecule (2001)

Kohn, F, Weil, T, ...

Single molecule spectroscopy is used to obtain detailed information on the photophysical properties of immobilized perylenediimide-based molecules, substituted in the bay positions. The fluorescence...

Femtosecond fluorescence upconversion study of rigid dendrimers containing peryleneimide chromophores at the rim (2001)

Weil, T, ...

The kinetics of a newly synthesized series of a first generation of polyphenylene dendrimers in which one phenyl in a dendritic arm was para-substituted by a peryleneimide chromophore are reported....

Intramolecular energy hopping in polyphenylene dendrimers with an increasing number of peryleneimide chromophores (2001)

Mitra, S, Weil, T, Herrmann, A, ...

The photophysical properties and the excitation energy transfer (EET) process of a series of first generation dendrimers having a rigid tetrahedral core and different numbers of peryleneimide...

Intramolecular energy hopping and energy trapping in polyphenylene dendrimers with multiple peryleneimide donor chromophores and a terryleneimide acceptor trap chromophore (2001)

Weil, T, Mitra, S, Wiesler, UM, ...

Intramolecular Forster-type excitation energy transfer (FRET) processes in a series of first-generation polyphenylene dendrimers substituted with spatially well-separated peryleneimide chromophores...

Polarisation sensitive single molecule fluorescence detection with linear polarised excitation light and modulated polarisation direction applied to multichromophoric entities (2001)

Kohn, J, Herrmann, A, Mullen, K, ...

Recently, investigations of the fluorescence properties of a multichromophoric dendritic entity at the single molecule level have revealed multiple fluorescence levels, collective off-states,...

Polyphenylene dendrimers with different fluorescent chromophores asymmetrically distributed at the periphery (2001)

Wiesler, UM, Herrmann, A, ...

A new synthetic approach leading to asymmetrically substituted polyphenylene dendrimers is presented. Following this method, polyphenylene dendrimers decorated with an increasing number of...

Triplet states as non-radiative traps in multichromophoric entities: single molecule spectroscopy of an artificial and natural antenna system (2001)

Kohn, F, ...

Energy transfer in antenna systems, ordered arrays of chromophores, is one of the key steps in the photosynthetic process. The photophysical processes taking place in such multichromophoric systems,...

Polarisation sensitive single molecule fluorescence detection with linear polarised excitation light and modulated polarisation direction applied to multichromophoric entities (2001)

Gensch, T., Hofkens, J., Köhn, F., Vosch, T., Herrmann, A., Müllen, Klaus, ...

Recently, investigations of the fluorescence properties of a multichromophoric dendritic entity at the single molecule level have revealed multiple fluorescence levels, collective off- states,...

Noise and the PSTH response to current transients II. Iintegrate-and-fire model with slow recovery and application to motoneuron data (2001)

Herrmann, A., Gerstner, W.

A generalized version of the integrate-and-fire model is presented that qualitatively reproduces firing rates and membrane trajectories of motoneurons. The description is based on the spike-response...

Noise and the PSTH response to current transients: I. General theory and application to the integrate-and-fire neuron (2001)

Herrmann, A., Gerstner, W.

An analytical model is proposed that can predict the shape of the poststimulus time histogram (PSTH) response to a current pulse of a neuron subjected to uncorrelated background input. The model is...

Assessing and evaluating student contribution to electronic discussions (2001)

Herrmann, A., Downie, Jill, O'Connell, B.

Tutors in face-to-face teaching and learning contexts, evaluate students' participation in order to provide assessment that contributes towards the students' final grade. Similarly, in on-line...

Assessing and evaluating student contribution to electronic discussions (2001)

Herrmann, A., Downie, Jill, O'Connell, B.

Tutors in face-to-face teaching and learning contexts, evaluate students' participation in order to provide assessment that contributes towards the students' final grade. Similarly, in on-line...

Noise and the PSTH response to current transients: I. General theory and application to the integrate-and-fire neuron (2001)

A. Herrmann, W. Gerstner

Abstract. A generalized version of the integrate-and-fire model is presented that qualitatively reproduces firing rates and membrane trajectories of motoneurons. The description is based on the...

Noise and the PSTH response to current transients: I. General theory and application to the integrate-and-fire neuron (2001)

A. Herrmann, W. Gerstner

Abstract. An analytical model is proposed that can predict the shape of the poststimulus time histogram (PSTH) response to a current pulse of a neuron subjected to uncorrelated background input. The...

Probing photophysical processes in individual multichromophoric dendrimers by single-molecule spectroscopy (2000)

Gensch, T, Kohn, F, ...

Individual multichromophoric dendrimer molecules, bearing eight perylenecarboximide chromophores at the rim, immobilized in a thin polyvinylbutyral (PVB) film were studied by far-field fluorescence...

Energieabsorbierendes unter Energieaufnahme plastisch verformbares Element (2000)

Baumeister, J., Pannkoke, K., Herrmann, A.

DE 19904030 C UPAB: 20001023 NOVELTY - The lengthy body (10) of the section comprises metallic foam, with a casing (20) of fiber reinforced plastic. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is...

Correlation between ground state conformation and excited state dynamics in a multichromophoric dendrimer studied by excitation wavelength dependent fluorescence upconversion (1999)

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A time-resolved fluorescence upconversion study on a polyphenylene dendrimer with 16 peryleneimide chromophores at the rim, in which the excitation wavelength is systematically varied while the...

Chapitre 6 : processus physiques de formation des écoulements = Chapter 6 : physical processes of runoff formation (1997)

Seuna, P., Herrmann, A., Lepisto, A., Warmerdam, P.M., Servat, E.

The main aim of environmental isotope investigations is to learn more about runoff formation. In this chapter, firstly, isotope hydrological investigations are reviewed in a global scale including 90...

Effects of the antiandrogen, cyproterone acetate, on the induction of papillomas, DNA synthesis and ornithine decarboxylase activity in mouse skin (1984)

Davidson, K.A., Ewald, L., Herrmann, A., Ogle, S.P., SIaga, T.J.

The antiandrogen, cyproterone acetate (CPA), applied simultaneously with 12-O-tetradecanoylphorbol-13-acetate (TPA) to the dorsal skin of male and female SENCAR mice initiated with 7,...

Composiciones jocosas en prosa : o sea colección de lo más selecto que publico en la risa / A. Herrmann.

Herrmann, A.

Compilación de diversos textos breves, de distintos autores que refieren a anécdotas y experiencias chuscas de la época, como son las modas, el carnaval, la extravagancia, las calvas y las...

Turkish pepper (extra hot)

Woywodt, A., Herrmann, A., Choi, M., Goebel, U., Luft, F.

A 38 year old female office worker was admitted with a newly discovered blood pressure of 250/110 mm Hg. Evaluation for secondary forms of hypertension was negative and treatment was begun. Sodium...

A novel multimedia tool to improve bedside teaching of cardiac auscultation

Woywodt, A, Herrmann, A, Kielstein, J, Haller, H, Haubitz, M, Purnhagen, H

Training in cardiac auscultation is a core element of undergraduate teaching but recent studies have documented a remarkable decline in auscultatory skills. Therefore there is an interest in new ways...