---
_id: '45742'
author:
- first_name: T.
full_name: Reimer, T.
last_name: Reimer
- first_name: Lena
full_name: Steinhoff, Lena
id: '4336'
last_name: Steinhoff
- first_name: M.
full_name: Leyer, M.
last_name: Leyer
citation:
ama: 'Reimer T, Steinhoff L, Leyer M. “Dear Stranger, This Looks Good on You”: The
Effect of Ambiguous Interactive Virtual Presence on Store Loyalty in Offline Retailing.
In: 2020 AMA Winter Academic Conference Proceedings, San Diego. ; 2020.'
apa: 'Reimer, T., Steinhoff, L., & Leyer, M. (2020). “Dear Stranger, This Looks
Good on You”: The Effect of Ambiguous Interactive Virtual Presence on Store Loyalty
in Offline Retailing. 2020 AMA Winter Academic Conference Proceedings, San
Diego. 2020 Winter AMA Conference Proceedings, San Diego.'
bibtex: '@inproceedings{Reimer_Steinhoff_Leyer_2020, title={“Dear Stranger, This
Looks Good on You”: The Effect of Ambiguous Interactive Virtual Presence on Store
Loyalty in Offline Retailing}, booktitle={2020 AMA Winter Academic Conference
Proceedings, San Diego.}, author={Reimer, T. and Steinhoff, Lena and Leyer, M.},
year={2020} }'
chicago: 'Reimer, T., Lena Steinhoff, and M. Leyer. “‘Dear Stranger, This Looks
Good on You’: The Effect of Ambiguous Interactive Virtual Presence on Store Loyalty
in Offline Retailing.” In 2020 AMA Winter Academic Conference Proceedings,
San Diego., 2020.'
ieee: 'T. Reimer, L. Steinhoff, and M. Leyer, “‘Dear Stranger, This Looks Good on
You’: The Effect of Ambiguous Interactive Virtual Presence on Store Loyalty in
Offline Retailing,” presented at the 2020 Winter AMA Conference Proceedings, San
Diego, 2020.'
mla: 'Reimer, T., et al. “‘Dear Stranger, This Looks Good on You’: The Effect of
Ambiguous Interactive Virtual Presence on Store Loyalty in Offline Retailing.”
2020 AMA Winter Academic Conference Proceedings, San Diego., 2020.'
short: 'T. Reimer, L. Steinhoff, M. Leyer, in: 2020 AMA Winter Academic Conference
Proceedings, San Diego., 2020.'
conference:
location: San Diego
name: 2020 Winter AMA Conference Proceedings
date_created: 2023-06-22T16:58:40Z
date_updated: 2026-01-13T09:30:51Z
department:
- _id: '733'
language:
- iso: eng
publication: 2020 AMA Winter Academic Conference Proceedings, San Diego.
publication_status: published
status: public
title: '“Dear Stranger, This Looks Good on You”: The Effect of Ambiguous Interactive
Virtual Presence on Store Loyalty in Offline Retailing'
type: conference
user_id: '102525'
year: '2020'
...
---
_id: '38051'
abstract:
- lang: eng
text: The characterisation of loss in optical waveguides is essential in
understanding the performance of these devices and their limitations. Whilst interferometric-based
methods generally provide the best results for low-loss waveguides, they are almost
exclusively used to provide characterization in cases where the waveguide is spatially
single-mode. Here, we introduce a Fabry-Pérot-based scheme to estimate the losses
of a nonlinear (birefringent or quasi-phase matched) waveguide at a wavelength
where it is multi-mode. The method involves measuring the generated second harmonic
power as the pump wavelength is scanned over the phase matching region. Furthermore,
it is shown that this method allows one to infer the losses of different second
harmonic spatial modes by scanning the pump field over the separated phase matching
spectra. By fitting the measured phase matching spectra from different titanium
indiffused lithium niobate waveguides to the model presented in this paper, it
is shown that one can estimate the second harmonic losses of a single spatial-mode,
at wavelengths where the waveguides are spatially multi-mode.
article_number: '5507'
author:
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Ganaël
full_name: Roeland, Ganaël
last_name: Roeland
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Santandrea M, Stefszky M, Roeland G, Silberhorn C. Interferometric method for
determining the losses of spatially multi-mode nonlinear waveguides based on second
harmonic generation. Optics Express. 2020;28(4). doi:10.1364/oe.380788
apa: Santandrea, M., Stefszky, M., Roeland, G., & Silberhorn, C. (2020). Interferometric
method for determining the losses of spatially multi-mode nonlinear waveguides
based on second harmonic generation. Optics Express, 28(4), Article
5507. https://doi.org/10.1364/oe.380788
bibtex: '@article{Santandrea_Stefszky_Roeland_Silberhorn_2020, title={Interferometric
method for determining the losses of spatially multi-mode nonlinear waveguides
based on second harmonic generation.}, volume={28}, DOI={10.1364/oe.380788},
number={45507}, journal={Optics Express}, publisher={Optica Publishing Group},
author={Santandrea, Matteo and Stefszky, Michael and Roeland, Ganaël and Silberhorn,
Christine}, year={2020} }'
chicago: Santandrea, Matteo, Michael Stefszky, Ganaël Roeland, and Christine Silberhorn.
“Interferometric Method for Determining the Losses of Spatially Multi-Mode Nonlinear
Waveguides Based on Second Harmonic Generation.” Optics Express 28, no.
4 (2020). https://doi.org/10.1364/oe.380788.
ieee: 'M. Santandrea, M. Stefszky, G. Roeland, and C. Silberhorn, “Interferometric
method for determining the losses of spatially multi-mode nonlinear waveguides
based on second harmonic generation.,” Optics Express, vol. 28, no. 4,
Art. no. 5507, 2020, doi: 10.1364/oe.380788.'
mla: Santandrea, Matteo, et al. “Interferometric Method for Determining the Losses
of Spatially Multi-Mode Nonlinear Waveguides Based on Second Harmonic Generation.”
Optics Express, vol. 28, no. 4, 5507, Optica Publishing Group, 2020, doi:10.1364/oe.380788.
short: M. Santandrea, M. Stefszky, G. Roeland, C. Silberhorn, Optics Express 28
(2020).
date_created: 2023-01-23T09:51:53Z
date_updated: 2026-01-16T10:23:16Z
department:
- _id: '288'
- _id: '15'
doi: 10.1364/oe.380788
intvolume: ' 28'
issue: '4'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Interferometric method for determining the losses of spatially multi-mode nonlinear
waveguides based on second harmonic generation.
type: journal_article
user_id: '42777'
volume: 28
year: '2020'
...
---
_id: '63781'
abstract:
- lang: eng
text: ' Triggering the energy-efficient behavior of agents in firms simultaneously
decreases costs and mitigates CO2 emissions. If firms use
team tournaments to increase energy-efficient behavior and thus employee performance,
they may face unintended consequences, like a bifurcation effect: Individuals
drop out if they believe that they cannot win the contest. By contrast, high-performing
employees may overexert themselves. Additionally, some individuals might be tempted
to free-ride. In a field experiment with truck drivers, we analyze whether proportional
sharing of the bonus within teams based on individual effort instead of egalitarian
sharing reduces both bifurcation and free-riding during team tournaments. Our
results reveal that (1) the team contest improves performance; (2) this increase
in performance is overall slightly stronger under the proportional than under
the egalitarian sharing rule, using ceteris paribus comparisons; and (3) the performance
increase is mainly driven by the team member performing worse. '
author:
- first_name: Christin
full_name: Hoffmann, Christin
last_name: Hoffmann
- first_name: Kirsten
full_name: Thommes, Kirsten
id: '72497'
last_name: Thommes
citation:
ama: Hoffmann C, Thommes K. Combining Egalitarian and Proportional Sharing Rules
in Team Tournaments to Incentivize Energy-Efficient Behavior in a Principal-Agent
Context. Organization & Environment. 2020;35(2):307-331. doi:10.1177/1086026620945343
apa: Hoffmann, C., & Thommes, K. (2020). Combining Egalitarian and Proportional
Sharing Rules in Team Tournaments to Incentivize Energy-Efficient Behavior in
a Principal-Agent Context. Organization & Environment, 35(2),
307–331. https://doi.org/10.1177/1086026620945343
bibtex: '@article{Hoffmann_Thommes_2020, title={Combining Egalitarian and Proportional
Sharing Rules in Team Tournaments to Incentivize Energy-Efficient Behavior in
a Principal-Agent Context}, volume={35}, DOI={10.1177/1086026620945343},
number={2}, journal={Organization & Environment}, publisher={SAGE Publications},
author={Hoffmann, Christin and Thommes, Kirsten}, year={2020}, pages={307–331}
}'
chicago: 'Hoffmann, Christin, and Kirsten Thommes. “Combining Egalitarian and Proportional
Sharing Rules in Team Tournaments to Incentivize Energy-Efficient Behavior in
a Principal-Agent Context.” Organization & Environment 35, no.
2 (2020): 307–31. https://doi.org/10.1177/1086026620945343.'
ieee: 'C. Hoffmann and K. Thommes, “Combining Egalitarian and Proportional Sharing
Rules in Team Tournaments to Incentivize Energy-Efficient Behavior in a Principal-Agent
Context,” Organization & Environment, vol. 35, no. 2, pp. 307–331,
2020, doi: 10.1177/1086026620945343.'
mla: Hoffmann, Christin, and Kirsten Thommes. “Combining Egalitarian and Proportional
Sharing Rules in Team Tournaments to Incentivize Energy-Efficient Behavior in
a Principal-Agent Context.” Organization & Environment, vol. 35,
no. 2, SAGE Publications, 2020, pp. 307–31, doi:10.1177/1086026620945343.
short: C. Hoffmann, K. Thommes, Organization & Environment 35 (2020) 307–331.
date_created: 2026-01-28T09:52:08Z
date_updated: 2026-01-28T09:52:13Z
department:
- _id: '178'
- _id: '184'
doi: 10.1177/1086026620945343
intvolume: ' 35'
issue: '2'
language:
- iso: eng
page: 307-331
publication: Organization & Environment
publication_identifier:
issn:
- 1086-0266
- 1552-7417
publication_status: published
publisher: SAGE Publications
status: public
title: Combining Egalitarian and Proportional Sharing Rules in Team Tournaments to
Incentivize Energy-Efficient Behavior in a Principal-Agent Context
type: journal_article
user_id: '72497'
volume: 35
year: '2020'
...
---
_id: '63852'
author:
- first_name: Katharina
full_name: Elbwart, Katharina
id: '87912'
last_name: Elbwart
citation:
ama: Elbwart K. Language Regard in the Sunshine State. Floridian Perspectives
on Language Ideologies and Linguistic Variation. WVT; 2020.
apa: Elbwart, K. (2020). Language regard in the Sunshine State. Floridian perspectives
on language ideologies and linguistic variation. WVT.
bibtex: '@book{Elbwart_2020, place={Trier}, title={Language regard in the Sunshine
State. Floridian perspectives on language ideologies and linguistic variation},
publisher={WVT}, author={Elbwart, Katharina}, year={2020} }'
chicago: 'Elbwart, Katharina. Language Regard in the Sunshine State. Floridian
Perspectives on Language Ideologies and Linguistic Variation. Trier: WVT,
2020.'
ieee: 'K. Elbwart, Language regard in the Sunshine State. Floridian perspectives
on language ideologies and linguistic variation. Trier: WVT, 2020.'
mla: Elbwart, Katharina. Language Regard in the Sunshine State. Floridian Perspectives
on Language Ideologies and Linguistic Variation. WVT, 2020.
short: K. Elbwart, Language Regard in the Sunshine State. Floridian Perspectives
on Language Ideologies and Linguistic Variation, WVT, Trier, 2020.
date_created: 2026-02-03T14:54:08Z
date_updated: 2026-02-03T14:54:15Z
language:
- iso: eng
place: Trier
publisher: WVT
status: public
title: Language regard in the Sunshine State. Floridian perspectives on language ideologies
and linguistic variation
type: dissertation
user_id: '87912'
year: '2020'
...
---
_id: '64037'
abstract:
- lang: eng
text: Cross-linked thermosets are investigated by C-13 solid-state nuclear magnetic
resonance (NMR) spectroscopy to determine their structure and to distinguish important
epoxy resins and hardening agents. In addition to the epoxy resin and hardening
agent, the identification of phosphorus-containing flame retardants is demonstrated
by P-31 solid-state NMR. These studies provide a spectral database for routine
use, which is finally applied to analyze commercial products containing an unknown
multicomponent system.
author:
- first_name: T.
full_name: Schäfer, T.
last_name: Schäfer
- first_name: G.
full_name: Buntkowsky, G.
last_name: Buntkowsky
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
citation:
ama: Schäfer T, Buntkowsky G, Gutmann T. Solid-State Nuclear Magnetic Resonance
as a Versatile Tool To Identify the Main Chemical Components of Epoxy-Based Thermosets.
ACS Omega. 2020;5(10):5412–5420. doi:10.1021/acsomega.9b04482
apa: Schäfer, T., Buntkowsky, G., & Gutmann, T. (2020). Solid-State Nuclear
Magnetic Resonance as a Versatile Tool To Identify the Main Chemical Components
of Epoxy-Based Thermosets. ACS Omega, 5(10), 5412–5420. https://doi.org/10.1021/acsomega.9b04482
bibtex: '@article{Schäfer_Buntkowsky_Gutmann_2020, title={Solid-State Nuclear Magnetic
Resonance as a Versatile Tool To Identify the Main Chemical Components of Epoxy-Based
Thermosets}, volume={5}, DOI={10.1021/acsomega.9b04482},
number={10}, journal={ACS Omega}, author={Schäfer, T. and Buntkowsky, G. and Gutmann,
Torsten}, year={2020}, pages={5412–5420} }'
chicago: 'Schäfer, T., G. Buntkowsky, and Torsten Gutmann. “Solid-State Nuclear
Magnetic Resonance as a Versatile Tool To Identify the Main Chemical Components
of Epoxy-Based Thermosets.” ACS Omega 5, no. 10 (2020): 5412–5420. https://doi.org/10.1021/acsomega.9b04482.'
ieee: 'T. Schäfer, G. Buntkowsky, and T. Gutmann, “Solid-State Nuclear Magnetic
Resonance as a Versatile Tool To Identify the Main Chemical Components of Epoxy-Based
Thermosets,” ACS Omega, vol. 5, no. 10, pp. 5412–5420, 2020, doi: 10.1021/acsomega.9b04482.'
mla: Schäfer, T., et al. “Solid-State Nuclear Magnetic Resonance as a Versatile
Tool To Identify the Main Chemical Components of Epoxy-Based Thermosets.” ACS
Omega, vol. 5, no. 10, 2020, pp. 5412–5420, doi:10.1021/acsomega.9b04482.
short: T. Schäfer, G. Buntkowsky, T. Gutmann, ACS Omega 5 (2020) 5412–5420.
date_created: 2026-02-07T16:08:30Z
date_updated: 2026-02-17T16:13:36Z
doi: 10.1021/acsomega.9b04482
extern: '1'
intvolume: ' 5'
issue: '10'
language:
- iso: eng
page: 5412–5420
publication: ACS Omega
status: public
title: Solid-State Nuclear Magnetic Resonance as a Versatile Tool To Identify the
Main Chemical Components of Epoxy-Based Thermosets
type: journal_article
user_id: '100715'
volume: 5
year: '2020'
...
---
_id: '64004'
abstract:
- lang: eng
text: Abstract A facile approach is reported for the preparation of dirhodium coordination
polymers [Rh2(L1)2]n (Rh2-L1) and [Rh2(L2)2]n (Rh2-L2; L1=N,N’-(pyromellitoyl)-bis-L-phenylalanine
diacid anion, L2=bis-N,N’-(L-phenylalanyl) naphthalene-1,4,5,8-tetracarboxylate
diimide) from chiral dicarboxylic acids by ligand exchange. Multiple techniques
including FTIR, XPS, and 1H→13C CP MAS NMR spectroscopy reveal the formation of
the coordination polymers. 19F MAS NMR was utilized to investigate the remaining
TFA groups in the obtained coordination polymers, and demonstrated near-quantitative
ligand exchange. DR-UV-vis and XPS confirm the oxidation state of the Rh center
and that the Rh-single bond in the dirhodium node is maintained in the synthesis
of Rh2-L1 and Rh2-L2. Both coordination polymers exhibit excellent catalytic performance
in the asymmetric cyclopropanation reaction between styrene and diazooxindole.
The catalysts can be easily recycled and reused without significant reduction
in their catalytic efficiency.
author:
- first_name: Zhenzhong
full_name: Li, Zhenzhong
last_name: Li
- first_name: Lorenz
full_name: Rösler, Lorenz
last_name: Rösler
- first_name: Kevin
full_name: Herr, Kevin
last_name: Herr
- first_name: Martin
full_name: Brodrecht, Martin
last_name: Brodrecht
- first_name: Hergen
full_name: Breitzke, Hergen
last_name: Breitzke
- first_name: Kathrin
full_name: Hofmann, Kathrin
last_name: Hofmann
- first_name: Hans-Heinrich
full_name: Limbach, Hans-Heinrich
last_name: Limbach
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: 'Li Z, Rösler L, Herr K, et al. Dirhodium Coordination Polymers for Asymmetric
Cyclopropanation of Diazooxindoles with Olefins: Synthesis and Spectroscopic Analysis.
ChemPlusChem. 2020;85(8):1737–1746. doi:10.1002/cplu.202000421'
apa: 'Li, Z., Rösler, L., Herr, K., Brodrecht, M., Breitzke, H., Hofmann, K., Limbach,
H.-H., Gutmann, T., & Buntkowsky, G. (2020). Dirhodium Coordination Polymers
for Asymmetric Cyclopropanation of Diazooxindoles with Olefins: Synthesis and
Spectroscopic Analysis. ChemPlusChem, 85(8), 1737–1746. https://doi.org/10.1002/cplu.202000421'
bibtex: '@article{Li_Rösler_Herr_Brodrecht_Breitzke_Hofmann_Limbach_Gutmann_Buntkowsky_2020,
title={Dirhodium Coordination Polymers for Asymmetric Cyclopropanation of Diazooxindoles
with Olefins: Synthesis and Spectroscopic Analysis}, volume={85}, DOI={10.1002/cplu.202000421},
number={8}, journal={ChemPlusChem}, author={Li, Zhenzhong and Rösler, Lorenz and
Herr, Kevin and Brodrecht, Martin and Breitzke, Hergen and Hofmann, Kathrin and
Limbach, Hans-Heinrich and Gutmann, Torsten and Buntkowsky, Gerd}, year={2020},
pages={1737–1746} }'
chicago: 'Li, Zhenzhong, Lorenz Rösler, Kevin Herr, Martin Brodrecht, Hergen Breitzke,
Kathrin Hofmann, Hans-Heinrich Limbach, Torsten Gutmann, and Gerd Buntkowsky.
“Dirhodium Coordination Polymers for Asymmetric Cyclopropanation of Diazooxindoles
with Olefins: Synthesis and Spectroscopic Analysis.” ChemPlusChem 85, no.
8 (2020): 1737–1746. https://doi.org/10.1002/cplu.202000421.'
ieee: 'Z. Li et al., “Dirhodium Coordination Polymers for Asymmetric Cyclopropanation
of Diazooxindoles with Olefins: Synthesis and Spectroscopic Analysis,” ChemPlusChem,
vol. 85, no. 8, pp. 1737–1746, 2020, doi: 10.1002/cplu.202000421.'
mla: 'Li, Zhenzhong, et al. “Dirhodium Coordination Polymers for Asymmetric Cyclopropanation
of Diazooxindoles with Olefins: Synthesis and Spectroscopic Analysis.” ChemPlusChem,
vol. 85, no. 8, 2020, pp. 1737–1746, doi:10.1002/cplu.202000421.'
short: Z. Li, L. Rösler, K. Herr, M. Brodrecht, H. Breitzke, K. Hofmann, H.-H. Limbach,
T. Gutmann, G. Buntkowsky, ChemPlusChem 85 (2020) 1737–1746.
date_created: 2026-02-07T15:54:32Z
date_updated: 2026-02-17T16:15:37Z
doi: 10.1002/cplu.202000421
extern: '1'
intvolume: ' 85'
issue: '8'
language:
- iso: eng
page: 1737–1746
publication: ChemPlusChem
publication_identifier:
issn:
- 2192-6506
status: public
title: 'Dirhodium Coordination Polymers for Asymmetric Cyclopropanation of Diazooxindoles
with Olefins: Synthesis and Spectroscopic Analysis'
type: journal_article
user_id: '100715'
volume: 85
year: '2020'
...
---
_id: '63985'
abstract:
- lang: eng
text: An experimental study is presented for the reverse micellar system of 15%
by mass polydisperse hexaethylene glycol monodecylether (C10E6) in cyclohexane
with varying amounts of added water up to 4% by mass. Measurements of viscosity
and self-diffusion coefficients were taken as a function of temperature between
10 and 45 °C at varying sample water loads but fixed C10E6/cyclohexane composition.
The results were used to inspect the validity of the Stokes–Einstein equation
for this system. Unreasonably small reverse average micelle radii and aggregation
numbers were obtained with the Stokes–Einstein equation, but reasonable values
for these quantities were obtained using the ratio of surfactant-to-cyclohexane
self-diffusion coefficients. While bulk viscosity increased with increasing water
load, a concurrent expected decrease of self-diffusion coefficient was only observed
for the surfactant and water but not for cyclohexane, which showed independence
of water load. Moreover, a spread of self-diffusion coefficients was observed
for the protons associated with the ethylene oxide repeat unit in samples with
polydisperse C10E6 but not in a sample with monodisperse C10E6. These findings
were interpreted by the presence of reverse micelle to reverse micelle hopping
motions that with higher water load become increasingly selective toward C10E6
molecules with short ethylene oxide repeat units, while those with long ethylene
oxide repeat units remain trapped within the reverse micelle because of the increased
hydrogen bonding interactions with the water inside the growing core of the reverse
micelle. Despite the observed breakdown of the Stokes–Einstein equation, the temperature
dependence of the viscosities and self-diffusion coefficients was found to follow
Arrhenius behavior over the investigated range of temperatures.
author:
- first_name: Markus M.
full_name: Hoffmann, Markus M.
last_name: Hoffmann
- first_name: Matthew D.
full_name: Too, Matthew D.
last_name: Too
- first_name: Michael
full_name: Vogel, Michael
last_name: Vogel
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Hoffmann MM, Too MD, Vogel M, Gutmann T, Buntkowsky G. Breakdown of the Stokes–Einstein
Equation for Solutions of Water in Oil Reverse Micelles. Journal of Physical
Chemistry B. 2020;124(41):9115–9125. doi:10.1021/acs.jpcb.0c06124
apa: Hoffmann, M. M., Too, M. D., Vogel, M., Gutmann, T., & Buntkowsky, G. (2020).
Breakdown of the Stokes–Einstein Equation for Solutions of Water in Oil Reverse
Micelles. Journal of Physical Chemistry B, 124(41), 9115–9125. https://doi.org/10.1021/acs.jpcb.0c06124
bibtex: '@article{Hoffmann_Too_Vogel_Gutmann_Buntkowsky_2020, title={Breakdown of
the Stokes–Einstein Equation for Solutions of Water in Oil Reverse Micelles},
volume={124}, DOI={10.1021/acs.jpcb.0c06124},
number={41}, journal={Journal of Physical Chemistry B}, publisher={American Chemical
Society}, author={Hoffmann, Markus M. and Too, Matthew D. and Vogel, Michael and
Gutmann, Torsten and Buntkowsky, Gerd}, year={2020}, pages={9115–9125} }'
chicago: 'Hoffmann, Markus M., Matthew D. Too, Michael Vogel, Torsten Gutmann, and
Gerd Buntkowsky. “Breakdown of the Stokes–Einstein Equation for Solutions of Water
in Oil Reverse Micelles.” Journal of Physical Chemistry B 124, no. 41 (2020):
9115–9125. https://doi.org/10.1021/acs.jpcb.0c06124.'
ieee: 'M. M. Hoffmann, M. D. Too, M. Vogel, T. Gutmann, and G. Buntkowsky, “Breakdown
of the Stokes–Einstein Equation for Solutions of Water in Oil Reverse Micelles,”
Journal of Physical Chemistry B, vol. 124, no. 41, pp. 9115–9125, 2020,
doi: 10.1021/acs.jpcb.0c06124.'
mla: Hoffmann, Markus M., et al. “Breakdown of the Stokes–Einstein Equation for
Solutions of Water in Oil Reverse Micelles.” Journal of Physical Chemistry
B, vol. 124, no. 41, American Chemical Society, 2020, pp. 9115–9125, doi:10.1021/acs.jpcb.0c06124.
short: M.M. Hoffmann, M.D. Too, M. Vogel, T. Gutmann, G. Buntkowsky, Journal of
Physical Chemistry B 124 (2020) 9115–9125.
date_created: 2026-02-07T15:45:38Z
date_updated: 2026-02-17T16:16:50Z
doi: 10.1021/acs.jpcb.0c06124
extern: '1'
intvolume: ' 124'
issue: '41'
language:
- iso: eng
page: 9115–9125
publication: Journal of Physical Chemistry B
publisher: American Chemical Society
status: public
title: Breakdown of the Stokes–Einstein Equation for Solutions of Water in Oil Reverse
Micelles
type: journal_article
user_id: '100715'
volume: 124
year: '2020'
...
---
_id: '63976'
abstract:
- lang: eng
text: Mesoporous silica materials (SBA-15) with surfaces modified with aminopropyltriethoxysilane
(APTES) of two different surface coverages were synthesized, and their structural
pore characteristics were analyzed. These two mesoporous silica materials were
impregnated with various solutions of radicals in a nonionic surfactant solvent.
Differential scanning calorimetry (DSC) analysis of the impregnated mesoporous
silica materials confirmed that the surfactant solutions were confined into the
pores. Dynamic nuclear polarization (DNP)-enhanced solid-state 13C magic-angle
spinning (MAS) NMR spectra recorded for these impregnated mesoporous silica materials
showed the presence of superimposed spectra from direct and indirect channel polarization
transfer processes not only for the confined surfactant solvent but also for the
APTES surface modification. The observation of the indirect channel resonances
implies that the surfactant solvents as well as the APTES exhibit molecular motions
with correlation times on the order of or faster than the inverse Larmor frequency.
Such motions are unexpected at the experimental temperature conditions of ∼120
K in particular for the immobilized APTES. Spectral line widths and intensities
of the observed 13C MAS NMR spectra were sensitive to the specific combination
of the radical, surfactant solvent, and APTES surface coverage. One particular
combination showed identical widths and intensities for the direct and the oppositely
phased indirect channel resonances, resulting in a blank spectrum. The differences
in line widths and intensities are discussed with respect to the structural organization
of the polarizing agent and surfactant within the pores and the complex interplay
of intermolecular interactions between these constituents.
author:
- first_name: Markus M.
full_name: Hoffmann, Markus M.
last_name: Hoffmann
- first_name: Sarah
full_name: Bothe, Sarah
last_name: Bothe
- first_name: Martin
full_name: Brodrecht, Martin
last_name: Brodrecht
- first_name: Vytautas
full_name: Klimavicius, Vytautas
last_name: Klimavicius
- first_name: Nadia B.
full_name: Haro-Mares, Nadia B.
last_name: Haro-Mares
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Hoffmann MM, Bothe S, Brodrecht M, et al. Direct and Indirect Dynamic Nuclear
Polarization Transfer Observed in Mesoporous Materials Impregnated with Nonionic
Surfactant Solutions of Polar Polarizing Agents. Journal of Physical Chemistry
C. 2020;124(9):5145–5156. doi:10.1021/acs.jpcc.9b10504
apa: Hoffmann, M. M., Bothe, S., Brodrecht, M., Klimavicius, V., Haro-Mares, N.
B., Gutmann, T., & Buntkowsky, G. (2020). Direct and Indirect Dynamic Nuclear
Polarization Transfer Observed in Mesoporous Materials Impregnated with Nonionic
Surfactant Solutions of Polar Polarizing Agents. Journal of Physical Chemistry
C, 124(9), 5145–5156. https://doi.org/10.1021/acs.jpcc.9b10504
bibtex: '@article{Hoffmann_Bothe_Brodrecht_Klimavicius_Haro-Mares_Gutmann_Buntkowsky_2020,
title={Direct and Indirect Dynamic Nuclear Polarization Transfer Observed in Mesoporous
Materials Impregnated with Nonionic Surfactant Solutions of Polar Polarizing Agents},
volume={124}, DOI={10.1021/acs.jpcc.9b10504},
number={9}, journal={Journal of Physical Chemistry C}, publisher={American Chemical
Society}, author={Hoffmann, Markus M. and Bothe, Sarah and Brodrecht, Martin and
Klimavicius, Vytautas and Haro-Mares, Nadia B. and Gutmann, Torsten and Buntkowsky,
Gerd}, year={2020}, pages={5145–5156} }'
chicago: 'Hoffmann, Markus M., Sarah Bothe, Martin Brodrecht, Vytautas Klimavicius,
Nadia B. Haro-Mares, Torsten Gutmann, and Gerd Buntkowsky. “Direct and Indirect
Dynamic Nuclear Polarization Transfer Observed in Mesoporous Materials Impregnated
with Nonionic Surfactant Solutions of Polar Polarizing Agents.” Journal of
Physical Chemistry C 124, no. 9 (2020): 5145–5156. https://doi.org/10.1021/acs.jpcc.9b10504.'
ieee: 'M. M. Hoffmann et al., “Direct and Indirect Dynamic Nuclear Polarization
Transfer Observed in Mesoporous Materials Impregnated with Nonionic Surfactant
Solutions of Polar Polarizing Agents,” Journal of Physical Chemistry C,
vol. 124, no. 9, pp. 5145–5156, 2020, doi: 10.1021/acs.jpcc.9b10504.'
mla: Hoffmann, Markus M., et al. “Direct and Indirect Dynamic Nuclear Polarization
Transfer Observed in Mesoporous Materials Impregnated with Nonionic Surfactant
Solutions of Polar Polarizing Agents.” Journal of Physical Chemistry C,
vol. 124, no. 9, American Chemical Society, 2020, pp. 5145–5156, doi:10.1021/acs.jpcc.9b10504.
short: M.M. Hoffmann, S. Bothe, M. Brodrecht, V. Klimavicius, N.B. Haro-Mares, T.
Gutmann, G. Buntkowsky, Journal of Physical Chemistry C 124 (2020) 5145–5156.
date_created: 2026-02-07T15:42:36Z
date_updated: 2026-02-17T16:17:17Z
doi: 10.1021/acs.jpcc.9b10504
extern: '1'
intvolume: ' 124'
issue: '9'
language:
- iso: eng
page: 5145–5156
publication: Journal of Physical Chemistry C
publication_identifier:
issn:
- 1932-7447
publisher: American Chemical Society
status: public
title: Direct and Indirect Dynamic Nuclear Polarization Transfer Observed in Mesoporous
Materials Impregnated with Nonionic Surfactant Solutions of Polar Polarizing Agents
type: journal_article
user_id: '100715'
volume: 124
year: '2020'
...
---
_id: '63954'
abstract:
- lang: eng
text: We propose a mild and versatile synthesis protocol based on N-hydroxysuccinimide-activated
esters for the introduction of new functionalities to cellulose, using as starting
point established protocols for the tosylation of cellulose and its subsequent
reaction with a diamine linker. As a proof of concept, we describe the functionalization
of microcrystalline cellulose with a N-hydroxysuccinimide-activated ester of benzophenone,
a photoreactive functional group. Irradiation of the final product with UV light
yields a self-standing polymer film and is expected to result in cross-linking
among cellulose chains. To monitor structural changes at the molecular level,
each functionalization step is characterized by a multinuclear solid-state NMR
approach. DNP-enhanced 15N CP MAS NMR experiments reveal the formation of the
amide bond to the photoreactive linker and deliver further information about the
binding situation of nitrogen-containing groups in these materials. The flexible
synthesis protocol described here can be easily extended to a broad range of other
functionalities of interest, both for the cellulose and macromolecular research.
author:
- first_name: Pedro B.
full_name: Groszewicz, Pedro B.
last_name: Groszewicz
- first_name: Pedro
full_name: Mendes, Pedro
last_name: Mendes
- first_name: Bharti
full_name: Kumari, Bharti
last_name: Kumari
- first_name: Jonas
full_name: Lins, Jonas
last_name: Lins
- first_name: Markus
full_name: Biesalski, Markus
last_name: Biesalski
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: 'Groszewicz PB, Mendes P, Kumari B, et al. N-Hydroxysuccinimide-activated esters
as a functionalization agent for amino cellulose: synthesis and solid-state NMR
characterization. Cellulose. 2020;27:1239–1254. doi:10.1007/s10570-019-02864-5'
apa: 'Groszewicz, P. B., Mendes, P., Kumari, B., Lins, J., Biesalski, M., Gutmann,
T., & Buntkowsky, G. (2020). N-Hydroxysuccinimide-activated esters as a functionalization
agent for amino cellulose: synthesis and solid-state NMR characterization. Cellulose,
27, 1239–1254. https://doi.org/10.1007/s10570-019-02864-5'
bibtex: '@article{Groszewicz_Mendes_Kumari_Lins_Biesalski_Gutmann_Buntkowsky_2020,
title={N-Hydroxysuccinimide-activated esters as a functionalization agent for
amino cellulose: synthesis and solid-state NMR characterization}, volume={27},
DOI={10.1007/s10570-019-02864-5},
journal={Cellulose}, author={Groszewicz, Pedro B. and Mendes, Pedro and Kumari,
Bharti and Lins, Jonas and Biesalski, Markus and Gutmann, Torsten and Buntkowsky,
Gerd}, year={2020}, pages={1239–1254} }'
chicago: 'Groszewicz, Pedro B., Pedro Mendes, Bharti Kumari, Jonas Lins, Markus
Biesalski, Torsten Gutmann, and Gerd Buntkowsky. “N-Hydroxysuccinimide-Activated
Esters as a Functionalization Agent for Amino Cellulose: Synthesis and Solid-State
NMR Characterization.” Cellulose 27 (2020): 1239–1254. https://doi.org/10.1007/s10570-019-02864-5.'
ieee: 'P. B. Groszewicz et al., “N-Hydroxysuccinimide-activated esters as
a functionalization agent for amino cellulose: synthesis and solid-state NMR characterization,”
Cellulose, vol. 27, pp. 1239–1254, 2020, doi: 10.1007/s10570-019-02864-5.'
mla: 'Groszewicz, Pedro B., et al. “N-Hydroxysuccinimide-Activated Esters as a Functionalization
Agent for Amino Cellulose: Synthesis and Solid-State NMR Characterization.” Cellulose,
vol. 27, 2020, pp. 1239–1254, doi:10.1007/s10570-019-02864-5.'
short: P.B. Groszewicz, P. Mendes, B. Kumari, J. Lins, M. Biesalski, T. Gutmann,
G. Buntkowsky, Cellulose 27 (2020) 1239–1254.
date_created: 2026-02-07T15:35:03Z
date_updated: 2026-02-17T16:18:08Z
doi: 10.1007/s10570-019-02864-5
extern: '1'
intvolume: ' 27'
language:
- iso: eng
page: 1239–1254
publication: Cellulose
publication_identifier:
issn:
- 0969-0239
status: public
title: 'N-Hydroxysuccinimide-activated esters as a functionalization agent for amino
cellulose: synthesis and solid-state NMR characterization'
type: journal_article
user_id: '100715'
volume: 27
year: '2020'
...
---
_id: '63953'
abstract:
- lang: eng
text: Most porous polymers are notoriously hard to characterize due to their amorphous
and completely insoluble nature. On the other hand, they are an interesting class
of materials for sorption, catalytic, and electrode applications, thus they warrant
in-depth studies. In this contribution, we elaborate on the possibilities that
dynamic nuclear polarization offers towards the investigation of the structure
of porous polymers. We discuss the advantages and disadvantages of this technique
in the investigation of model polymers.
author:
- first_name: Sven
full_name: Grätz, Sven
last_name: Grätz
- first_name: Marcos
full_name: Olivera Junior, Marcos
last_name: Olivera Junior
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Lars
full_name: Borchardt, Lars
last_name: Borchardt
citation:
ama: Grätz S, Olivera Junior M, Gutmann T, Borchardt L. A comprehensive approach
for the characterization of porous polymers using 13C and 15N dynamic nuclear
polarization NMR spectroscopy. Physical Chemistry Chemical Physics. 2020;22(40):23307–23314.
doi:10.1039/D0CP04010J
apa: Grätz, S., Olivera Junior, M., Gutmann, T., & Borchardt, L. (2020). A comprehensive
approach for the characterization of porous polymers using 13C and 15N dynamic
nuclear polarization NMR spectroscopy. Physical Chemistry Chemical Physics,
22(40), 23307–23314. https://doi.org/10.1039/D0CP04010J
bibtex: '@article{Grätz_Olivera Junior_Gutmann_Borchardt_2020, title={A comprehensive
approach for the characterization of porous polymers using 13C and 15N dynamic
nuclear polarization NMR spectroscopy}, volume={22}, DOI={10.1039/D0CP04010J},
number={40}, journal={Physical Chemistry Chemical Physics}, publisher={The Royal
Society of Chemistry}, author={Grätz, Sven and Olivera Junior, Marcos and Gutmann,
Torsten and Borchardt, Lars}, year={2020}, pages={23307–23314} }'
chicago: 'Grätz, Sven, Marcos Olivera Junior, Torsten Gutmann, and Lars Borchardt.
“A Comprehensive Approach for the Characterization of Porous Polymers Using 13C
and 15N Dynamic Nuclear Polarization NMR Spectroscopy.” Physical Chemistry
Chemical Physics 22, no. 40 (2020): 23307–23314. https://doi.org/10.1039/D0CP04010J.'
ieee: 'S. Grätz, M. Olivera Junior, T. Gutmann, and L. Borchardt, “A comprehensive
approach for the characterization of porous polymers using 13C and 15N dynamic
nuclear polarization NMR spectroscopy,” Physical Chemistry Chemical Physics,
vol. 22, no. 40, pp. 23307–23314, 2020, doi: 10.1039/D0CP04010J.'
mla: Grätz, Sven, et al. “A Comprehensive Approach for the Characterization of Porous
Polymers Using 13C and 15N Dynamic Nuclear Polarization NMR Spectroscopy.” Physical
Chemistry Chemical Physics, vol. 22, no. 40, The Royal Society of Chemistry,
2020, pp. 23307–23314, doi:10.1039/D0CP04010J.
short: S. Grätz, M. Olivera Junior, T. Gutmann, L. Borchardt, Physical Chemistry
Chemical Physics 22 (2020) 23307–23314.
date_created: 2026-02-07T15:34:42Z
date_updated: 2026-02-17T16:18:14Z
doi: 10.1039/D0CP04010J
extern: '1'
intvolume: ' 22'
issue: '40'
language:
- iso: eng
page: 23307–23314
publication: Physical Chemistry Chemical Physics
publisher: The Royal Society of Chemistry
status: public
title: A comprehensive approach for the characterization of porous polymers using
13C and 15N dynamic nuclear polarization NMR spectroscopy
type: journal_article
user_id: '100715'
volume: 22
year: '2020'
...
---
_id: '64276'
author:
- first_name: Bernhard
full_name: Krötz, Bernhard
last_name: Krötz
- first_name: Job J.
full_name: Kuit, Job J.
last_name: Kuit
- first_name: Eric M.
full_name: Opdam, Eric M.
last_name: Opdam
- first_name: Henrik
full_name: Schlichtkrull, Henrik
last_name: Schlichtkrull
citation:
ama: Krötz B, Kuit JJ, Opdam EM, Schlichtkrull H. The Infinitesimal Characters of
Discrete Series for Real Spherical Spaces. Geometric and Functional Analysis.
2020;30(3):804-857. doi:10.1007/s00039-020-00540-6
apa: Krötz, B., Kuit, J. J., Opdam, E. M., & Schlichtkrull, H. (2020). The Infinitesimal
Characters of Discrete Series for Real Spherical Spaces. Geometric and Functional
Analysis, 30(3), 804–857. https://doi.org/10.1007/s00039-020-00540-6
bibtex: '@article{Krötz_Kuit_Opdam_Schlichtkrull_2020, title={The Infinitesimal
Characters of Discrete Series for Real Spherical Spaces}, volume={30}, DOI={10.1007/s00039-020-00540-6},
number={3}, journal={Geometric and Functional Analysis}, publisher={Springer Science
and Business Media LLC}, author={Krötz, Bernhard and Kuit, Job J. and Opdam, Eric
M. and Schlichtkrull, Henrik}, year={2020}, pages={804–857} }'
chicago: 'Krötz, Bernhard, Job J. Kuit, Eric M. Opdam, and Henrik Schlichtkrull.
“The Infinitesimal Characters of Discrete Series for Real Spherical Spaces.” Geometric
and Functional Analysis 30, no. 3 (2020): 804–57. https://doi.org/10.1007/s00039-020-00540-6.'
ieee: 'B. Krötz, J. J. Kuit, E. M. Opdam, and H. Schlichtkrull, “The Infinitesimal
Characters of Discrete Series for Real Spherical Spaces,” Geometric and Functional
Analysis, vol. 30, no. 3, pp. 804–857, 2020, doi: 10.1007/s00039-020-00540-6.'
mla: Krötz, Bernhard, et al. “The Infinitesimal Characters of Discrete Series for
Real Spherical Spaces.” Geometric and Functional Analysis, vol. 30, no.
3, Springer Science and Business Media LLC, 2020, pp. 804–57, doi:10.1007/s00039-020-00540-6.
short: B. Krötz, J.J. Kuit, E.M. Opdam, H. Schlichtkrull, Geometric and Functional
Analysis 30 (2020) 804–857.
date_created: 2026-02-19T13:28:12Z
date_updated: 2026-02-19T13:28:26Z
doi: 10.1007/s00039-020-00540-6
intvolume: ' 30'
issue: '3'
language:
- iso: eng
page: 804-857
publication: Geometric and Functional Analysis
publication_identifier:
issn:
- 1016-443X
- 1420-8970
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: The Infinitesimal Characters of Discrete Series for Real Spherical Spaces
type: journal_article
user_id: '52730'
volume: 30
year: '2020'
...
---
_id: '59684'
abstract:
- lang: eng
text: In this paper, we present a confocal laser scanning holographic microscope
for the investigation of buried structures. The multimodal system combines high
diffraction limited resolution and high signal-to-noise-ratio with the ability
of phase acquisition. The amplitude and phase imaging capabilities of the system
are shown on a test target. For the investigation of buried integrated semiconductor
structures, we expand our system with an optical beam induced current modality
that provides additional structure-sensitive contrast. We demonstrate the performance
of the multimodal system by imaging the buried structures of a microcontroller
through the silicon backside of its housing in reflection geometry.
article_number: A8
article_type: original
author:
- first_name: Lena
full_name: Schnitzler, Lena
last_name: Schnitzler
- first_name: Krisztian
full_name: Neutsch, Krisztian
last_name: Neutsch
- first_name: Falk
full_name: Schellenberg, Falk
last_name: Schellenberg
- first_name: Martin R.
full_name: Hofmann, Martin R.
last_name: Hofmann
- first_name: Nils Christopher
full_name: Gerhardt, Nils Christopher
id: '115298'
last_name: Gerhardt
orcid: 0009-0002-5538-231X
citation:
ama: Schnitzler L, Neutsch K, Schellenberg F, Hofmann MR, Gerhardt NC. Confocal
laser scanning holographic microscopy of buried structures. Applied Optics.
2020;60(4). doi:10.1364/ao.403687
apa: Schnitzler, L., Neutsch, K., Schellenberg, F., Hofmann, M. R., & Gerhardt,
N. C. (2020). Confocal laser scanning holographic microscopy of buried structures.
Applied Optics, 60(4), Article A8. https://doi.org/10.1364/ao.403687
bibtex: '@article{Schnitzler_Neutsch_Schellenberg_Hofmann_Gerhardt_2020, title={Confocal
laser scanning holographic microscopy of buried structures}, volume={60}, DOI={10.1364/ao.403687}, number={4A8},
journal={Applied Optics}, publisher={Optica Publishing Group}, author={Schnitzler,
Lena and Neutsch, Krisztian and Schellenberg, Falk and Hofmann, Martin R. and
Gerhardt, Nils Christopher}, year={2020} }'
chicago: Schnitzler, Lena, Krisztian Neutsch, Falk Schellenberg, Martin R. Hofmann,
and Nils Christopher Gerhardt. “Confocal Laser Scanning Holographic Microscopy
of Buried Structures.” Applied Optics 60, no. 4 (2020). https://doi.org/10.1364/ao.403687.
ieee: 'L. Schnitzler, K. Neutsch, F. Schellenberg, M. R. Hofmann, and N. C. Gerhardt,
“Confocal laser scanning holographic microscopy of buried structures,” Applied
Optics, vol. 60, no. 4, Art. no. A8, 2020, doi: 10.1364/ao.403687.'
mla: Schnitzler, Lena, et al. “Confocal Laser Scanning Holographic Microscopy of
Buried Structures.” Applied Optics, vol. 60, no. 4, A8, Optica Publishing
Group, 2020, doi:10.1364/ao.403687.
short: L. Schnitzler, K. Neutsch, F. Schellenberg, M.R. Hofmann, N.C. Gerhardt,
Applied Optics 60 (2020).
date_created: 2025-04-25T07:04:55Z
date_updated: 2026-02-19T14:23:31Z
department:
- _id: '977'
doi: 10.1364/ao.403687
extern: '1'
intvolume: ' 60'
issue: '4'
language:
- iso: eng
publication: Applied Optics
publication_identifier:
issn:
- 1559-128X
- 2155-3165
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
status: public
title: Confocal laser scanning holographic microscopy of buried structures
type: journal_article
user_id: '15911'
volume: 60
year: '2020'
...
---
_id: '57401'
author:
- first_name: Christian
full_name: Pfeifer, Christian
last_name: Pfeifer
- first_name: Simon
full_name: Janssen, Simon
last_name: Janssen
- first_name: Philip
full_name: Yang, Philip
id: '100432'
last_name: Yang
- first_name: Uschi
full_name: Backes-Gellner, Uschi
last_name: Backes-Gellner
citation:
ama: Pfeifer C, Janssen S, Yang P, Backes-Gellner U. Training participation of a
firm’s aging workforce. Empirical Research in Vocational Education and Training.
2020;4(2):131-147. doi:10.1007/bf03546513
apa: Pfeifer, C., Janssen, S., Yang, P., & Backes-Gellner, U. (2020). Training
participation of a firm’s aging workforce. Empirical Research in Vocational
Education and Training, 4(2), 131–147. https://doi.org/10.1007/bf03546513
bibtex: '@article{Pfeifer_Janssen_Yang_Backes-Gellner_2020, title={Training participation
of a firm’s aging workforce}, volume={4}, DOI={10.1007/bf03546513},
number={2}, journal={Empirical Research in Vocational Education and Training},
publisher={Springer Science and Business Media LLC}, author={Pfeifer, Christian
and Janssen, Simon and Yang, Philip and Backes-Gellner, Uschi}, year={2020}, pages={131–147}
}'
chicago: 'Pfeifer, Christian, Simon Janssen, Philip Yang, and Uschi Backes-Gellner.
“Training Participation of a Firm’s Aging Workforce.” Empirical Research in
Vocational Education and Training 4, no. 2 (2020): 131–47. https://doi.org/10.1007/bf03546513.'
ieee: 'C. Pfeifer, S. Janssen, P. Yang, and U. Backes-Gellner, “Training participation
of a firm’s aging workforce,” Empirical Research in Vocational Education and
Training, vol. 4, no. 2, pp. 131–147, 2020, doi: 10.1007/bf03546513.'
mla: Pfeifer, Christian, et al. “Training Participation of a Firm’s Aging Workforce.”
Empirical Research in Vocational Education and Training, vol. 4, no. 2,
Springer Science and Business Media LLC, 2020, pp. 131–47, doi:10.1007/bf03546513.
short: C. Pfeifer, S. Janssen, P. Yang, U. Backes-Gellner, Empirical Research in
Vocational Education and Training 4 (2020) 131–147.
date_created: 2024-11-25T09:26:18Z
date_updated: 2026-02-20T13:55:38Z
department:
- _id: '681'
doi: 10.1007/bf03546513
intvolume: ' 4'
issue: '2'
language:
- iso: eng
page: 131-147
publication: Empirical Research in Vocational Education and Training
publication_identifier:
issn:
- 1877-6345
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Training participation of a firm’s aging workforce
type: journal_article
user_id: '80877'
volume: 4
year: '2020'
...
---
_id: '33592'
author:
- first_name: Sara
full_name: Rezat, Sara
id: '58338'
last_name: Rezat
citation:
ama: Rezat S. Wie neutral sind Berichte? Modalisierungsprozeduren in Ereignisberichten.
Praxis Deutsch 281. Published online 2020:41-43.
apa: Rezat, S. (2020). Wie neutral sind Berichte? Modalisierungsprozeduren in Ereignisberichten.
Praxis Deutsch 281, 41–43.
bibtex: '@article{Rezat_2020, title={Wie neutral sind Berichte? Modalisierungsprozeduren
in Ereignisberichten}, journal={Praxis Deutsch 281}, author={Rezat, Sara}, year={2020},
pages={41–43} }'
chicago: Rezat, Sara. “Wie neutral sind Berichte? Modalisierungsprozeduren in Ereignisberichten.”
Praxis Deutsch 281, 2020, 41–43.
ieee: S. Rezat, “Wie neutral sind Berichte? Modalisierungsprozeduren in Ereignisberichten,”
Praxis Deutsch 281, pp. 41–43, 2020.
mla: Rezat, Sara. “Wie neutral sind Berichte? Modalisierungsprozeduren in Ereignisberichten.”
Praxis Deutsch 281, 2020, pp. 41–43.
short: S. Rezat, Praxis Deutsch 281 (2020) 41–43.
date_created: 2022-10-09T21:00:54Z
date_updated: 2026-02-23T12:14:03Z
department:
- _id: '463'
language:
- iso: ger
page: 41-43
publication: Praxis Deutsch 281
status: public
title: Wie neutral sind Berichte? Modalisierungsprozeduren in Ereignisberichten
type: journal_article
user_id: '14972'
year: '2020'
...
---
_id: '55524'
article_number: '022413'
author:
- first_name: Adam
full_name: Burchardt, Adam
last_name: Burchardt
- first_name: Zahra
full_name: Raissi, Zahra
id: '98836'
last_name: Raissi
orcid: 0000-0002-9168-8212
citation:
ama: Burchardt A, Raissi Z. Stochastic local operations with classical communication
of absolutely maximally entangled states. Physical Review A. 2020;102(2).
doi:10.1103/physreva.102.022413
apa: Burchardt, A., & Raissi, Z. (2020). Stochastic local operations with classical
communication of absolutely maximally entangled states. Physical Review A,
102(2), Article 022413. https://doi.org/10.1103/physreva.102.022413
bibtex: '@article{Burchardt_Raissi_2020, title={Stochastic local operations with
classical communication of absolutely maximally entangled states}, volume={102},
DOI={10.1103/physreva.102.022413},
number={2022413}, journal={Physical Review A}, publisher={American Physical Society
(APS)}, author={Burchardt, Adam and Raissi, Zahra}, year={2020} }'
chicago: Burchardt, Adam, and Zahra Raissi. “Stochastic Local Operations with Classical
Communication of Absolutely Maximally Entangled States.” Physical Review A
102, no. 2 (2020). https://doi.org/10.1103/physreva.102.022413.
ieee: 'A. Burchardt and Z. Raissi, “Stochastic local operations with classical communication
of absolutely maximally entangled states,” Physical Review A, vol. 102,
no. 2, Art. no. 022413, 2020, doi: 10.1103/physreva.102.022413.'
mla: Burchardt, Adam, and Zahra Raissi. “Stochastic Local Operations with Classical
Communication of Absolutely Maximally Entangled States.” Physical Review A,
vol. 102, no. 2, 022413, American Physical Society (APS), 2020, doi:10.1103/physreva.102.022413.
short: A. Burchardt, Z. Raissi, Physical Review A 102 (2020).
date_created: 2024-08-05T14:43:35Z
date_updated: 2026-02-23T13:44:06Z
ddc:
- '000'
doi: 10.1103/physreva.102.022413
file:
- access_level: closed
content_type: application/pdf
creator: zraissi
date_created: 2026-02-23T13:42:24Z
date_updated: 2026-02-23T13:42:24Z
file_id: '64598'
file_name: PhysRevA.102.022413.pdf
file_size: 836678
relation: main_file
success: 1
file_date_updated: 2026-02-23T13:42:24Z
has_accepted_license: '1'
intvolume: ' 102'
issue: '2'
language:
- iso: eng
publication: Physical Review A
publication_identifier:
issn:
- 2469-9926
- 2469-9934
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Stochastic local operations with classical communication of absolutely maximally
entangled states
type: journal_article
user_id: '98836'
volume: 102
year: '2020'
...
---
_id: '55523'
author:
- first_name: Zahra
full_name: Raissi, Zahra
id: '98836'
last_name: Raissi
orcid: 0000-0002-9168-8212
citation:
ama: Raissi Z. Modifying Method of Constructing Quantum Codes From Highly Entangled
States. IEEE Access. 2020;8:222439-222448. doi:10.1109/access.2020.3043401
apa: Raissi, Z. (2020). Modifying Method of Constructing Quantum Codes From Highly
Entangled States. IEEE Access, 8, 222439–222448. https://doi.org/10.1109/access.2020.3043401
bibtex: '@article{Raissi_2020, title={Modifying Method of Constructing Quantum Codes
From Highly Entangled States}, volume={8}, DOI={10.1109/access.2020.3043401},
journal={IEEE Access}, publisher={Institute of Electrical and Electronics Engineers
(IEEE)}, author={Raissi, Zahra}, year={2020}, pages={222439–222448} }'
chicago: 'Raissi, Zahra. “Modifying Method of Constructing Quantum Codes From Highly
Entangled States.” IEEE Access 8 (2020): 222439–48. https://doi.org/10.1109/access.2020.3043401.'
ieee: 'Z. Raissi, “Modifying Method of Constructing Quantum Codes From Highly Entangled
States,” IEEE Access, vol. 8, pp. 222439–222448, 2020, doi: 10.1109/access.2020.3043401.'
mla: Raissi, Zahra. “Modifying Method of Constructing Quantum Codes From Highly
Entangled States.” IEEE Access, vol. 8, Institute of Electrical and Electronics
Engineers (IEEE), 2020, pp. 222439–48, doi:10.1109/access.2020.3043401.
short: Z. Raissi, IEEE Access 8 (2020) 222439–222448.
date_created: 2024-08-05T14:42:45Z
date_updated: 2026-02-23T13:41:50Z
ddc:
- '000'
doi: 10.1109/access.2020.3043401
file:
- access_level: closed
content_type: application/pdf
creator: zraissi
date_created: 2026-02-23T13:41:43Z
date_updated: 2026-02-23T13:41:43Z
file_id: '64597'
file_name: Modifying_Method_of_Constructing_Quantum_Codes_From_Highly_Entangled_States.pdf
file_size: 4289127
relation: main_file
success: 1
file_date_updated: 2026-02-23T13:41:43Z
has_accepted_license: '1'
intvolume: ' 8'
language:
- iso: eng
page: 222439-222448
publication: IEEE Access
publication_identifier:
issn:
- 2169-3536
publication_status: published
publisher: Institute of Electrical and Electronics Engineers (IEEE)
status: public
title: Modifying Method of Constructing Quantum Codes From Highly Entangled States
type: journal_article
user_id: '98836'
volume: 8
year: '2020'
...
---
_id: '55538'
article_number: '022413'
author:
- first_name: Adam
full_name: Burchardt, Adam
last_name: Burchardt
- first_name: Zahra
full_name: Raissi, Zahra
last_name: Raissi
citation:
ama: Burchardt A, Raissi Z. Stochastic local operations with classical communication
of absolutely maximally entangled states. Physical Review A. 2020;102(2).
doi:10.1103/physreva.102.022413
apa: Burchardt, A., & Raissi, Z. (2020). Stochastic local operations with classical
communication of absolutely maximally entangled states. Physical Review A,
102(2), Article 022413. https://doi.org/10.1103/physreva.102.022413
bibtex: '@article{Burchardt_Raissi_2020, title={Stochastic local operations with
classical communication of absolutely maximally entangled states}, volume={102},
DOI={10.1103/physreva.102.022413},
number={2022413}, journal={Physical Review A}, publisher={American Physical Society
(APS)}, author={Burchardt, Adam and Raissi, Zahra}, year={2020} }'
chicago: Burchardt, Adam, and Zahra Raissi. “Stochastic Local Operations with Classical
Communication of Absolutely Maximally Entangled States.” Physical Review A
102, no. 2 (2020). https://doi.org/10.1103/physreva.102.022413.
ieee: 'A. Burchardt and Z. Raissi, “Stochastic local operations with classical communication
of absolutely maximally entangled states,” Physical Review A, vol. 102,
no. 2, Art. no. 022413, 2020, doi: 10.1103/physreva.102.022413.'
mla: Burchardt, Adam, and Zahra Raissi. “Stochastic Local Operations with Classical
Communication of Absolutely Maximally Entangled States.” Physical Review A,
vol. 102, no. 2, 022413, American Physical Society (APS), 2020, doi:10.1103/physreva.102.022413.
short: A. Burchardt, Z. Raissi, Physical Review A 102 (2020).
date_created: 2024-08-05T15:05:41Z
date_updated: 2026-02-23T13:48:53Z
doi: 10.1103/physreva.102.022413
intvolume: ' 102'
issue: '2'
language:
- iso: eng
publication: Physical Review A
publication_identifier:
issn:
- 2469-9926
- 2469-9934
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Stochastic local operations with classical communication of absolutely maximally
entangled states
type: journal_article
user_id: '98836'
volume: 102
year: '2020'
...
---
_id: '39405'
author:
- first_name: Dmitry
full_name: Petrov, Dmitry
id: '8282'
last_name: Petrov
- first_name: Ulrich
full_name: Hilleringmann, Ulrich
id: '20179'
last_name: Hilleringmann
citation:
ama: 'Petrov D, Hilleringmann U. Water-based primary cell for powering of wireless
sensors. In: 2020 IEEE SENSORS. IEEE; 2020. doi:10.1109/sensors47125.2020.9278891'
apa: Petrov, D., & Hilleringmann, U. (2020). Water-based primary cell for powering
of wireless sensors. 2020 IEEE SENSORS. https://doi.org/10.1109/sensors47125.2020.9278891
bibtex: '@inproceedings{Petrov_Hilleringmann_2020, title={Water-based primary cell
for powering of wireless sensors}, DOI={10.1109/sensors47125.2020.9278891},
booktitle={2020 IEEE SENSORS}, publisher={IEEE}, author={Petrov, Dmitry and Hilleringmann,
Ulrich}, year={2020} }'
chicago: Petrov, Dmitry, and Ulrich Hilleringmann. “Water-Based Primary Cell for
Powering of Wireless Sensors.” In 2020 IEEE SENSORS. IEEE, 2020. https://doi.org/10.1109/sensors47125.2020.9278891.
ieee: 'D. Petrov and U. Hilleringmann, “Water-based primary cell for powering of
wireless sensors,” 2020, doi: 10.1109/sensors47125.2020.9278891.'
mla: Petrov, Dmitry, and Ulrich Hilleringmann. “Water-Based Primary Cell for Powering
of Wireless Sensors.” 2020 IEEE SENSORS, IEEE, 2020, doi:10.1109/sensors47125.2020.9278891.
short: 'D. Petrov, U. Hilleringmann, in: 2020 IEEE SENSORS, IEEE, 2020.'
date_created: 2023-01-24T10:22:29Z
date_updated: 2026-02-24T19:12:28Z
department:
- _id: '59'
- _id: '977'
doi: 10.1109/sensors47125.2020.9278891
language:
- iso: eng
publication: 2020 IEEE SENSORS
publication_status: published
publisher: IEEE
status: public
title: Water-based primary cell for powering of wireless sensors
type: conference
user_id: '8282'
year: '2020'
...
---
_id: '51848'
author:
- first_name: M.
full_name: Poeplau, M.
last_name: Poeplau
- first_name: S.
full_name: Ester, S.
last_name: Ester
- first_name: B.
full_name: Henning, B.
last_name: Henning
- first_name: T.
full_name: Wagner, T.
last_name: Wagner
citation:
ama: 'Poeplau M, Ester S, Henning B, Wagner T. 5.2.3 Zinkoxid als photostabiler
Luminophor zur optischen Sauerstoffdetektion. In: Tagungsband. AMA Service
GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf; 2020. doi:10.5162/sensoren2019/5.2.3'
apa: Poeplau, M., Ester, S., Henning, B., & Wagner, T. (2020). 5.2.3 Zinkoxid
als photostabiler Luminophor zur optischen Sauerstoffdetektion. Tagungsband.
https://doi.org/10.5162/sensoren2019/5.2.3
bibtex: '@inproceedings{Poeplau_Ester_Henning_Wagner_2020, title={5.2.3 Zinkoxid
als photostabiler Luminophor zur optischen Sauerstoffdetektion}, DOI={10.5162/sensoren2019/5.2.3},
booktitle={Tagungsband}, publisher={AMA Service GmbH, Von-Münchhausen-Str. 49,
31515 Wunstorf}, author={Poeplau, M. and Ester, S. and Henning, B. and Wagner,
T.}, year={2020} }'
chicago: Poeplau, M., S. Ester, B. Henning, and T. Wagner. “5.2.3 Zinkoxid Als Photostabiler
Luminophor Zur Optischen Sauerstoffdetektion.” In Tagungsband. AMA Service
GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, 2020. https://doi.org/10.5162/sensoren2019/5.2.3.
ieee: 'M. Poeplau, S. Ester, B. Henning, and T. Wagner, “5.2.3 Zinkoxid als photostabiler
Luminophor zur optischen Sauerstoffdetektion,” 2020, doi: 10.5162/sensoren2019/5.2.3.'
mla: Poeplau, M., et al. “5.2.3 Zinkoxid Als Photostabiler Luminophor Zur Optischen
Sauerstoffdetektion.” Tagungsband, AMA Service GmbH, Von-Münchhausen-Str.
49, 31515 Wunstorf, 2020, doi:10.5162/sensoren2019/5.2.3.
short: 'M. Poeplau, S. Ester, B. Henning, T. Wagner, in: Tagungsband, AMA Service
GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, 2020.'
date_created: 2024-02-26T11:14:13Z
date_updated: 2026-02-25T14:01:30Z
department:
- _id: '49'
doi: 10.5162/sensoren2019/5.2.3
publication: Tagungsband
publication_status: published
publisher: AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf
status: public
title: 5.2.3 Zinkoxid als photostabiler Luminophor zur optischen Sauerstoffdetektion
type: conference
user_id: '15911'
year: '2020'
...
---
_id: '19976'
abstract:
- lang: eng
text: The aim to reduce pollutant emission has led to a trend towards lightweight
construction in car body development during the last years. As a consequence of
the resulting need for multi-material design, mechanical joining technologies
become increasingly important. Mechanical joining allows for the combination of
dissimilar materials, while thermic joining techniques reach their limits. Self-piercing
riveting enables the joining of dissimilar materials by using semi-tubular rivets
as mechanical fasteners. The rivet production, however, is costly and time-consuming,
as the rivets generally have to be hardened, tempered and coated after forming,
in order to achieve an adequate strength and corrosion resistance. A promising
approach to improve the efficiency of the rivet manufacturing is the use of high-strength
high nitrogen steel as rivet material because these additional process steps would
not be necessary anymore. As a result of the comparatively high nitrogen content,
such steels have various beneficial properties like higher strength, good ductility
and improved corrosion resistance. By cold bulk forming of high nitrogen steels
high-strength parts can be manufactured due to the strengthening which is caused
by the high strain hardening. However, high tool loads thereby have to be expected
and are a major challenge during the production process. Consequently, there is
a need for appropriate forming strategies. This paper presents key aspects concerning
the process design for the manufacturing of semi-tubular self-piercing rivets
made of high-strength steel. The aim is to produce the rivets in several forming
stages without intermediate heat treatment between the single stages. Due to the
high strain hardening of the material, a two stage forming concept will be investigated.
Cup-backward extrusion is chosen as the first process step in order to form the
rivet shank without forming the rivet foot. Thus, the strain hardening effects
in the area of the rivet foot are minimized and the tool loads during the following
process step can be reduced. During the second and final forming stage the detailed
geometry of the rivet foot and the rivet head is formed. In this context, the
effect of different variations, for example concerning the final geometry of the
rivet foot, on the tool load is investigated using multistage numerical analysis.
Furthermore, the influence of the process temperature on occurring stresses is
analysed. Based on the results of the investigations, an adequate forming strategy
and a tool concept for the manufacturing of semi-tubular self-piercing rivets
made of high-strength steel are presented.
citation:
ama: Kuball C-M, Uhe B, Meschut G, Merklein M, eds. Process Design for the Forming
of Semi-Tubular Self-Piercing Rivets Made of High Nitrogen Steel. Vol 50.;
2020:280-285. doi:10.1016/j.promfg.2020.08.052
apa: Kuball, C.-M., Uhe, B., Meschut, G., & Merklein, M. (Eds.). (2020). Process
design for the forming of semi-tubular self-piercing rivets made of high nitrogen
steel (Vol. 50, pp. 280–285). https://doi.org/10.1016/j.promfg.2020.08.052
bibtex: '@book{Kuball_Uhe_Meschut_Merklein_2020, series={Procedia Manufacturing},
title={Process design for the forming of semi-tubular self-piercing rivets made
of high nitrogen steel}, volume={50}, DOI={10.1016/j.promfg.2020.08.052},
year={2020}, pages={280–285}, collection={Procedia Manufacturing} }'
chicago: Kuball, Clara-Maria, Benedikt Uhe, Gerson Meschut, and Marion Merklein,
eds. Process Design for the Forming of Semi-Tubular Self-Piercing Rivets Made
of High Nitrogen Steel. Vol. 50. Procedia Manufacturing, 2020. https://doi.org/10.1016/j.promfg.2020.08.052.
ieee: C.-M. Kuball, B. Uhe, G. Meschut, and M. Merklein, Eds., Process design
for the forming of semi-tubular self-piercing rivets made of high nitrogen steel,
vol. 50. 2020, pp. 280–285.
mla: Kuball, Clara-Maria, et al., editors. Process Design for the Forming of
Semi-Tubular Self-Piercing Rivets Made of High Nitrogen Steel. 2020, pp. 280–85,
doi:10.1016/j.promfg.2020.08.052.
short: C.-M. Kuball, B. Uhe, G. Meschut, M. Merklein, eds., Process Design for the
Forming of Semi-Tubular Self-Piercing Rivets Made of High Nitrogen Steel, 2020.
date_created: 2020-10-12T08:30:08Z
date_updated: 2026-02-27T10:43:48Z
department:
- _id: '157'
doi: 10.1016/j.promfg.2020.08.052
editor:
- first_name: Clara-Maria
full_name: Kuball, Clara-Maria
last_name: Kuball
- first_name: Benedikt
full_name: Uhe, Benedikt
id: '38131'
last_name: Uhe
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
intvolume: ' 50'
keyword:
- high nitrogen steel
- self-piercing riveting
- joining by forming
- bulk forming
- tool design
language:
- iso: eng
page: 280-285
publication_status: published
quality_controlled: '1'
series_title: Procedia Manufacturing
status: public
title: Process design for the forming of semi-tubular self-piercing rivets made of
high nitrogen steel
type: conference_editor
user_id: '53912'
volume: 50
year: '2020'
...