---
_id: '574'
abstract:
- lang: eng
text: 'Vaidman, in a recent article adopts the method of ''quantum weak measurements
in pre- and postselected ensembles'' to ascertain whether or not the chained-Zeno
counterfactual computation scheme proposed by Hosten et al. is counterfactual;
which has been the topic of a debate on the definition of counterfactuality. We
disagree with his conclusion, which brings up some interesting aspects of quantum
weak measurements and some concerns about the way they are interpreted. '
article_processing_charge: No
author:
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Paul
full_name: Kwiat, Paul
last_name: Kwiat
citation:
ama: Hosten O, Kwiat P. Weak measurements and counterfactual computation. 2006.
apa: Hosten, O., & Kwiat, P. (2006). Weak measurements and counterfactual computation.
ArXiv.
chicago: Hosten, Onur, and Paul Kwiat. “Weak Measurements and Counterfactual Computation.”
ArXiv, 2006.
ieee: O. Hosten and P. Kwiat, “Weak measurements and counterfactual computation.”
ArXiv, 2006.
ista: Hosten O, Kwiat P. 2006. Weak measurements and counterfactual computation.
mla: Hosten, Onur, and Paul Kwiat. Weak Measurements and Counterfactual Computation.
ArXiv, 2006.
short: O. Hosten, P. Kwiat, (2006).
date_created: 2018-12-11T11:47:16Z
date_published: 2006-12-19T00:00:00Z
date_updated: 2020-05-12T08:18:01Z
day: '19'
extern: '1'
external_id:
arxiv:
- '0612159'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/quant-ph/0612159
month: '12'
oa: 1
oa_version: Preprint
page: '2'
publication_status: published
publisher: ArXiv
publist_id: '7240'
status: public
title: Weak measurements and counterfactual computation
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2006'
...
---
_id: '578'
abstract:
- lang: eng
text: A source of single photons allows secure quantum key distribution, in addition,
to being a critical resource for linear optics quantum computing. We describe
our progress on deterministically creating single photons from spontaneous parametric
downconversion, an extension of the Pittman, Jacobs and Franson scheme [Phys.
Rev A, v66, 042303 (2002)]. Their idea was to conditionally prepare single photons
by measuring one member of a spontaneously emitted photon pair and storing the
remaining conditionally prepared photon until a predetermined time, when it would
be "deterministically" released from storage. Our approach attempts
to improve upon this by recycling the pump pulse in order to decrease the possibility
of multiple-pair generation, while maintaining a high probability of producing
a single pair. Many of the challenges we discuss are central to other quantum
information technologies, including the need for low-loss optical storage, switching
and detection, and fast feed-forward control.
alternative_title:
- Proc. SPIE
author:
- first_name: Nicholas
full_name: Peters, Nicholas A
last_name: Peters
- first_name: Keith
full_name: Arnold, Keith J
last_name: Arnold
- first_name: Aaron
full_name: VanDevender, Aaron P
last_name: Vandevender
- first_name: Evan
full_name: Jeffrey, Evan R
last_name: Jeffrey
- first_name: Radhika
full_name: Rangarajan, Radhika
last_name: Rangarajan
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Julio
full_name: Barreiro, Julio T
last_name: Barreiro
- first_name: Joseph
full_name: Altepeter, Joseph B
last_name: Altepeter
- first_name: Paul
full_name: Kwiat, Paul G
last_name: Kwiat
citation:
ama: 'Peters N, Arnold K, Vandevender A, et al. Towards a quasi-deterministic single-photon
source. In: Vol 6305. SPIE; 2006. doi:10.1117/12.684702'
apa: Peters, N., Arnold, K., Vandevender, A., Jeffrey, E., Rangarajan, R., Hosten,
O., … Kwiat, P. (2006). Towards a quasi-deterministic single-photon source (Vol.
6305). Presented at the Quantum Communications and Quantum Imaging, SPIE. https://doi.org/10.1117/12.684702
chicago: Peters, Nicholas, Keith Arnold, Aaron Vandevender, Evan Jeffrey, Radhika
Rangarajan, Onur Hosten, Julio Barreiro, Joseph Altepeter, and Paul Kwiat. “Towards
a Quasi-Deterministic Single-Photon Source,” Vol. 6305. SPIE, 2006. https://doi.org/10.1117/12.684702.
ieee: N. Peters et al., “Towards a quasi-deterministic single-photon source,”
presented at the Quantum Communications and Quantum Imaging, 2006, vol. 6305.
ista: Peters N, Arnold K, Vandevender A, Jeffrey E, Rangarajan R, Hosten O, Barreiro
J, Altepeter J, Kwiat P. 2006. Towards a quasi-deterministic single-photon source.
Quantum Communications and Quantum Imaging, Proc. SPIE, vol. 6305.
mla: Peters, Nicholas, et al. Towards a Quasi-Deterministic Single-Photon Source.
Vol. 6305, SPIE, 2006, doi:10.1117/12.684702.
short: N. Peters, K. Arnold, A. Vandevender, E. Jeffrey, R. Rangarajan, O. Hosten,
J. Barreiro, J. Altepeter, P. Kwiat, in:, SPIE, 2006.
conference:
name: Quantum Communications and Quantum Imaging
date_created: 2018-12-11T11:47:17Z
date_published: 2006-01-01T00:00:00Z
date_updated: 2020-07-14T12:47:11Z
day: '01'
doi: 10.1117/12.684702
extern: 1
intvolume: ' 6305'
month: '01'
publication_status: published
publisher: SPIE
publist_id: '7234'
quality_controlled: 0
status: public
title: Towards a quasi-deterministic single-photon source
type: conference
volume: 6305
year: '2006'
...
---
_id: '577'
abstract:
- lang: eng
text: Visible light photon counters (VLPCs) and solid-state photomultipliers (SSPMs)
are high-efficiency single-photon detectors which have multi-photon counting capability.
While both the VLPCs and the SSPMs have inferred internal quantum efficiencies
above 93%, the actual measured values for both the detectors were in fact limited
to less than 88%, attributed to in-coupling losses. We are currently improving
this overall detection efficiency via a) custom anti-reflection coating the detectors
and the in-coupling fibers, b) implementing a novel cryogenic design to reduce
transmission losses and, c) using low-noise electronics to obtain a better signal-to-noise
ratio.
alternative_title:
- Proceedings of SPIE
author:
- first_name: Radhika
full_name: Rangarajan, Radhika
last_name: Rangarajan
- first_name: Joseph
full_name: Altepeter, Joseph B
last_name: Altepeter
- first_name: Evan
full_name: Jeffrey, Evan R
last_name: Jeffrey
- first_name: Micah
full_name: Stoutimore, Micah J
last_name: Stoutimore
- first_name: Nicholas
full_name: Peters, Nicholas A
last_name: Peters
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Paul
full_name: Kwiat, Paul G
last_name: Kwiat
citation:
ama: 'Rangarajan R, Altepeter J, Jeffrey E, et al. High-efficiency single-photon
detectors. In: Vol 6372. SPIE; 2006. doi:10.1117/12.686117'
apa: Rangarajan, R., Altepeter, J., Jeffrey, E., Stoutimore, M., Peters, N., Hosten,
O., & Kwiat, P. (2006). High-efficiency single-photon detectors (Vol. 6372).
Presented at the Unknown (978-081946470-5), SPIE. https://doi.org/10.1117/12.686117
chicago: Rangarajan, Radhika, Joseph Altepeter, Evan Jeffrey, Micah Stoutimore,
Nicholas Peters, Onur Hosten, and Paul Kwiat. “High-Efficiency Single-Photon Detectors,”
Vol. 6372. SPIE, 2006. https://doi.org/10.1117/12.686117.
ieee: R. Rangarajan et al., “High-efficiency single-photon detectors,” presented
at the Unknown (978-081946470-5), 2006, vol. 6372.
ista: Rangarajan R, Altepeter J, Jeffrey E, Stoutimore M, Peters N, Hosten O, Kwiat
P. 2006. High-efficiency single-photon detectors. Unknown (978-081946470-5), Proceedings
of SPIE, vol. 6372.
mla: Rangarajan, Radhika, et al. High-Efficiency Single-Photon Detectors.
Vol. 6372, SPIE, 2006, doi:10.1117/12.686117.
short: R. Rangarajan, J. Altepeter, E. Jeffrey, M. Stoutimore, N. Peters, O. Hosten,
P. Kwiat, in:, SPIE, 2006.
conference:
name: Unknown (978-081946470-5)
date_created: 2018-12-11T11:47:17Z
date_published: 2006-01-01T00:00:00Z
date_updated: 2020-07-14T12:47:11Z
day: '01'
doi: 10.1117/12.686117
extern: 1
intvolume: ' 6372'
month: '01'
publication_status: published
publisher: SPIE
publist_id: '7233'
quality_controlled: 0
status: public
title: High-efficiency single-photon detectors
type: conference
volume: 6372
year: '2006'
...
---
_id: '579'
abstract:
- lang: eng
text: 'The logic underlying the coherent nature of quantum information processing
often deviates from intuitive reasoning, leading to surprising effects. Counterfactual
computation constitutes a striking example: the potential outcome of a quantum
computation can be inferred, even if the computer is not run 1. Relying on similar
arguments to interaction-free measurements 2 (or quantum interrogation3), counterfactual
computation is accomplished by putting the computer in a superposition of ''running''
and ''not running'' states, and then interfering the two histories. Conditional
on the as-yet-unknown outcome of the computation, it is sometimes possible to
counterfactually infer information about the solution. Here we demonstrate counterfactual
computation, implementing Grover''s search algorithm with an all-optical approach4.
It was believed that the overall probability of such counterfactual inference
is intrinsically limited1,5, so that it could not perform better on average than
random guesses. However, using a novel ''chained'' version of the quantum Zeno
effect6, we show how to boost the counterfactual inference probability to unity,
thereby beating the random guessing limit. Our methods are general and apply to
any physical system, as illustrated by a discussion of trapped-ion systems. Finally,
we briefly show that, in certain circumstances, counterfactual computation can
eliminate errors induced by decoherence. '
author:
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Matthew
full_name: Rakher, Matthew T
last_name: Rakher
- first_name: Julio
full_name: Barreiro, Julio T
last_name: Barreiro
- first_name: Nicholas
full_name: Peters, Nicholas A
last_name: Peters
- first_name: Paul
full_name: Kwiat, Paul G
last_name: Kwiat
citation:
ama: Hosten O, Rakher M, Barreiro J, Peters N, Kwiat P. Counterfactual quantum computation
through quantum interrogation. Nature. 2006;439(7079):949-952. doi:10.1038/nature04523
apa: Hosten, O., Rakher, M., Barreiro, J., Peters, N., & Kwiat, P. (2006). Counterfactual
quantum computation through quantum interrogation. Nature. Nature Publishing
Group. https://doi.org/10.1038/nature04523
chicago: Hosten, Onur, Matthew Rakher, Julio Barreiro, Nicholas Peters, and Paul
Kwiat. “Counterfactual Quantum Computation through Quantum Interrogation.” Nature.
Nature Publishing Group, 2006. https://doi.org/10.1038/nature04523.
ieee: O. Hosten, M. Rakher, J. Barreiro, N. Peters, and P. Kwiat, “Counterfactual
quantum computation through quantum interrogation,” Nature, vol. 439, no.
7079. Nature Publishing Group, pp. 949–952, 2006.
ista: Hosten O, Rakher M, Barreiro J, Peters N, Kwiat P. 2006. Counterfactual quantum
computation through quantum interrogation. Nature. 439(7079), 949–952.
mla: Hosten, Onur, et al. “Counterfactual Quantum Computation through Quantum Interrogation.”
Nature, vol. 439, no. 7079, Nature Publishing Group, 2006, pp. 949–52,
doi:10.1038/nature04523.
short: O. Hosten, M. Rakher, J. Barreiro, N. Peters, P. Kwiat, Nature 439 (2006)
949–952.
date_created: 2018-12-11T11:47:18Z
date_published: 2006-02-23T00:00:00Z
date_updated: 2021-01-12T08:03:29Z
day: '23'
doi: 10.1038/nature04523
extern: 1
intvolume: ' 439'
issue: '7079'
month: '02'
page: 949 - 952
publication: Nature
publication_status: published
publisher: Nature Publishing Group
publist_id: '7235'
quality_controlled: 0
status: public
title: Counterfactual quantum computation through quantum interrogation
type: journal_article
volume: 439
year: '2006'
...
---
_id: '583'
abstract:
- lang: eng
text: Visible light photon counters (VLPCs) and solid-state photomultipliers (SSPMs)
facilitate efficient single-photon detection. We are attempting to improve their
efficiency, previously limited to < 88% by coupling losses, via anti-reflection
coatings, better electronics and cryogenics.
author:
- first_name: Radhika
full_name: Rangarajan, Radhika
last_name: Rangarajan
- first_name: Nicholas
full_name: Peters, Nicholas A
last_name: Peters
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Joseph
full_name: Altepeter, Joseph B
last_name: Altepeter
- first_name: Evan
full_name: Jeffrey, Evan R
last_name: Jeffrey
- first_name: Paul
full_name: Kwiat, Paul G
last_name: Kwiat
citation:
ama: 'Rangarajan R, Peters N, Hosten O, Altepeter J, Jeffrey E, Kwiat P. Improved
single-photon detection. In: IEEE; 2006. doi:10.1109/CLEO.2006.4628641'
apa: 'Rangarajan, R., Peters, N., Hosten, O., Altepeter, J., Jeffrey, E., &
Kwiat, P. (2006). Improved single-photon detection. Presented at the CLEO/QELS:
Conference on Lasers and Electro-Optics / Quantum Electronics and Laser Science
Conference, IEEE. https://doi.org/10.1109/CLEO.2006.4628641'
chicago: Rangarajan, Radhika, Nicholas Peters, Onur Hosten, Joseph Altepeter, Evan
Jeffrey, and Paul Kwiat. “Improved Single-Photon Detection.” IEEE, 2006. https://doi.org/10.1109/CLEO.2006.4628641.
ieee: 'R. Rangarajan, N. Peters, O. Hosten, J. Altepeter, E. Jeffrey, and P. Kwiat,
“Improved single-photon detection,” presented at the CLEO/QELS: Conference on
Lasers and Electro-Optics / Quantum Electronics and Laser Science Conference,
2006.'
ista: 'Rangarajan R, Peters N, Hosten O, Altepeter J, Jeffrey E, Kwiat P. 2006.
Improved single-photon detection. CLEO/QELS: Conference on Lasers and Electro-Optics
/ Quantum Electronics and Laser Science Conference.'
mla: Rangarajan, Radhika, et al. Improved Single-Photon Detection. IEEE,
2006, doi:10.1109/CLEO.2006.4628641.
short: R. Rangarajan, N. Peters, O. Hosten, J. Altepeter, E. Jeffrey, P. Kwiat,
in:, IEEE, 2006.
conference:
name: 'CLEO/QELS: Conference on Lasers and Electro-Optics / Quantum Electronics
and Laser Science Conference'
date_created: 2018-12-11T11:47:19Z
date_published: 2006-01-01T00:00:00Z
date_updated: 2021-01-12T08:03:43Z
day: '01'
doi: 10.1109/CLEO.2006.4628641
extern: 1
month: '01'
publication_status: published
publisher: IEEE
publist_id: '7232'
quality_controlled: 0
status: public
title: Improved single-photon detection
type: conference
year: '2006'
...
---
_id: '6151'
author:
- first_name: Iris
full_name: Salecker, Iris
last_name: Salecker
- first_name: Michael
full_name: Häusser, Michael
last_name: Häusser
- first_name: Mario
full_name: de Bono, Mario
id: 4E3FF80E-F248-11E8-B48F-1D18A9856A87
last_name: de Bono
orcid: 0000-0001-8347-0443
citation:
ama: 'Salecker I, Häusser M, de Bono M. On the axonal road to circuit function and
behaviour: Workshop on the assembly and function of neuronal circuits. EMBO
reports. 2006;7(6):585-589. doi:10.1038/sj.embor.7400713'
apa: 'Salecker, I., Häusser, M., & de Bono, M. (2006). On the axonal road to
circuit function and behaviour: Workshop on the assembly and function of neuronal
circuits. EMBO Reports. Wiley. https://doi.org/10.1038/sj.embor.7400713'
chicago: 'Salecker, Iris, Michael Häusser, and Mario de Bono. “On the Axonal Road
to Circuit Function and Behaviour: Workshop on the Assembly and Function of Neuronal
Circuits.” EMBO Reports. Wiley, 2006. https://doi.org/10.1038/sj.embor.7400713.'
ieee: 'I. Salecker, M. Häusser, and M. de Bono, “On the axonal road to circuit function
and behaviour: Workshop on the assembly and function of neuronal circuits,” EMBO
reports, vol. 7, no. 6. Wiley, pp. 585–589, 2006.'
ista: 'Salecker I, Häusser M, de Bono M. 2006. On the axonal road to circuit function
and behaviour: Workshop on the assembly and function of neuronal circuits. EMBO
reports. 7(6), 585–589.'
mla: 'Salecker, Iris, et al. “On the Axonal Road to Circuit Function and Behaviour:
Workshop on the Assembly and Function of Neuronal Circuits.” EMBO Reports,
vol. 7, no. 6, Wiley, 2006, pp. 585–89, doi:10.1038/sj.embor.7400713.'
short: I. Salecker, M. Häusser, M. de Bono, EMBO Reports 7 (2006) 585–589.
date_created: 2019-03-21T08:50:43Z
date_published: 2006-06-01T00:00:00Z
date_updated: 2021-01-12T08:06:23Z
day: '01'
doi: 10.1038/sj.embor.7400713
extern: '1'
external_id:
pmid:
- '16729018'
intvolume: ' 7'
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://europepmc.org/articles/pmc1479602
month: '06'
oa: 1
oa_version: Published Version
page: 585-589
pmid: 1
publication: EMBO reports
publication_identifier:
issn:
- 1469-221X
- 1469-3178
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: 'On the axonal road to circuit function and behaviour: Workshop on the assembly
and function of neuronal circuits'
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2006'
...
---
_id: '6152'
author:
- first_name: Candida
full_name: Rogers, Candida
last_name: Rogers
- first_name: Annelie
full_name: Persson, Annelie
last_name: Persson
- first_name: Benny
full_name: Cheung, Benny
last_name: Cheung
- first_name: Mario
full_name: de Bono, Mario
id: 4E3FF80E-F248-11E8-B48F-1D18A9856A87
last_name: de Bono
orcid: 0000-0001-8347-0443
citation:
ama: Rogers C, Persson A, Cheung B, de Bono M. Behavioral motifs and neural pathways
coordinating O2 responses and aggregation in C. elegans. Current Biology.
2006;16(7):649-659. doi:10.1016/j.cub.2006.03.023
apa: Rogers, C., Persson, A., Cheung, B., & de Bono, M. (2006). Behavioral motifs
and neural pathways coordinating O2 responses and aggregation in C. elegans. Current
Biology. Elsevier. https://doi.org/10.1016/j.cub.2006.03.023
chicago: Rogers, Candida, Annelie Persson, Benny Cheung, and Mario de Bono. “Behavioral
Motifs and Neural Pathways Coordinating O2 Responses and Aggregation in C. Elegans.”
Current Biology. Elsevier, 2006. https://doi.org/10.1016/j.cub.2006.03.023.
ieee: C. Rogers, A. Persson, B. Cheung, and M. de Bono, “Behavioral motifs and neural
pathways coordinating O2 responses and aggregation in C. elegans,” Current
Biology, vol. 16, no. 7. Elsevier, pp. 649–659, 2006.
ista: Rogers C, Persson A, Cheung B, de Bono M. 2006. Behavioral motifs and neural
pathways coordinating O2 responses and aggregation in C. elegans. Current Biology.
16(7), 649–659.
mla: Rogers, Candida, et al. “Behavioral Motifs and Neural Pathways Coordinating
O2 Responses and Aggregation in C. Elegans.” Current Biology, vol. 16,
no. 7, Elsevier, 2006, pp. 649–59, doi:10.1016/j.cub.2006.03.023.
short: C. Rogers, A. Persson, B. Cheung, M. de Bono, Current Biology 16 (2006) 649–659.
date_created: 2019-03-21T09:15:27Z
date_published: 2006-04-04T00:00:00Z
date_updated: 2021-01-12T08:06:23Z
day: '04'
doi: 10.1016/j.cub.2006.03.023
extern: '1'
external_id:
pmid:
- '16581509'
intvolume: ' 16'
issue: '7'
language:
- iso: eng
month: '04'
oa_version: None
page: 649-659
pmid: 1
publication: Current Biology
publication_identifier:
issn:
- 0960-9822
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Behavioral motifs and neural pathways coordinating O2 responses and aggregation
in C. elegans
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 16
year: '2006'
...
---
_id: '7328'
abstract:
- lang: eng
text: An experimental technique for measuring the current density distribution with
a resolution smaller than the channel/rib scale of the flow field in polymer electrolyte
fuel cells (PEFCs) is presented. The electron conductors in a plane perpendicular
to the channel direction are considered as two-dimensional resistors. Hence, the
current density is obtained from the solution of Laplace's equation with the potentials
at current collector and reaction layer as boundary conditions. Using ohmic drop
for calculating the local current, detailed knowledge of all resistances involved
is of prime importance. In particular, the contact resistance between the gas
diffusion layer (GDL) and flow field rib, as well as GDL bulk conductivity, are
strongly dependent on clamping pressure. They represent a substantial amount of
the total ohmic drop and therefore require careful consideration. The detailed
experimental setup as well as the concise procedure for quantitative data evaluation
is described. Finally, the method is applied successfully to a cell operated on
pure oxygen and air up to high current densities. The results show that electrical
and ionic resistances seem to govern the current distribution at low current regimes,
whereas mass transport limitations locally hamper the current production at high
loads.
article_number: A2158
article_processing_charge: No
article_type: original
author:
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Mathias
full_name: Reum, Mathias
last_name: Reum
- first_name: Jörg
full_name: Evertz, Jörg
last_name: Evertz
- first_name: Alexander
full_name: Wokaun, Alexander
last_name: Wokaun
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
citation:
ama: Freunberger SA, Reum M, Evertz J, Wokaun A, Büchi FN. Measuring the current
distribution in PEFCs with sub-millimeter resolution. Journal of The Electrochemical
Society. 2006;153(11). doi:10.1149/1.2345591
apa: Freunberger, S. A., Reum, M., Evertz, J., Wokaun, A., & Büchi, F. N. (2006).
Measuring the current distribution in PEFCs with sub-millimeter resolution. Journal
of The Electrochemical Society. The Electrochemical Society. https://doi.org/10.1149/1.2345591
chicago: Freunberger, Stefan Alexander, Mathias Reum, Jörg Evertz, Alexander Wokaun,
and Felix N. Büchi. “Measuring the Current Distribution in PEFCs with Sub-Millimeter
Resolution.” Journal of The Electrochemical Society. The Electrochemical
Society, 2006. https://doi.org/10.1149/1.2345591.
ieee: S. A. Freunberger, M. Reum, J. Evertz, A. Wokaun, and F. N. Büchi, “Measuring
the current distribution in PEFCs with sub-millimeter resolution,” Journal
of The Electrochemical Society, vol. 153, no. 11. The Electrochemical Society,
2006.
ista: Freunberger SA, Reum M, Evertz J, Wokaun A, Büchi FN. 2006. Measuring the
current distribution in PEFCs with sub-millimeter resolution. Journal of The Electrochemical
Society. 153(11), A2158.
mla: Freunberger, Stefan Alexander, et al. “Measuring the Current Distribution in
PEFCs with Sub-Millimeter Resolution.” Journal of The Electrochemical Society,
vol. 153, no. 11, A2158, The Electrochemical Society, 2006, doi:10.1149/1.2345591.
short: S.A. Freunberger, M. Reum, J. Evertz, A. Wokaun, F.N. Büchi, Journal of
The Electrochemical Society 153 (2006).
date_created: 2020-01-15T12:23:12Z
date_published: 2006-09-20T00:00:00Z
date_updated: 2021-01-12T08:13:06Z
day: '20'
doi: 10.1149/1.2345591
extern: '1'
intvolume: ' 153'
issue: '11'
language:
- iso: eng
month: '09'
oa_version: None
publication: Journal of The Electrochemical Society
publication_identifier:
issn:
- 0013-4651
publication_status: published
publisher: The Electrochemical Society
quality_controlled: '1'
status: public
title: Measuring the current distribution in PEFCs with sub-millimeter resolution
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 153
year: '2006'
...
---
_id: '7327'
abstract:
- lang: eng
text: "Propagation of performance changes to adjacent cells in polymer electrolyte
fuel cell stacks is studied by means of voltage monitoring and local current density
measurements in peripheral cells of the stack. A technical fuel cell stack has
been modified by implementing two independent reactant and coolant supplies in
order to deliberately change the performance of one cell (anomalous cell) and
study the coupling phenomena to adjacent cells (coupling cells), while keeping
the working conditions of the later cell-group unaltered.\r\nTwo anomalies are
studied: (i) air starvation and (ii) thermal anomaly, in a single anomalous cell
in the stack and their coupling to adjacent cells. The results have shown that
anomalies inducing considerable changes in the local current density of the anomalous
cell (such as air starvation) propagate to adjacent cells affecting their performance.
The propagation of local current density changes takes place via the common bipolar
plate due to its finite thickness and in-plane conductivity. Consequently, anomalies
which do not strongly influence the local current density distribution (such as
a thermal anomaly under the studied working conditions) do not propagate to adjacent
cells."
article_processing_charge: No
article_type: original
author:
- first_name: Marco
full_name: Santis, Marco
last_name: Santis
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Matthias
full_name: Papra, Matthias
last_name: Papra
- first_name: Alexander
full_name: Wokaun, Alexander
last_name: Wokaun
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
citation:
ama: Santis M, Freunberger SA, Papra M, Wokaun A, Büchi FN. Experimental investigation
of coupling phenomena in polymer electrolyte fuel cell stacks. Journal of Power
Sources. 2006;161(2):1076-1083. doi:10.1016/j.jpowsour.2006.06.007
apa: Santis, M., Freunberger, S. A., Papra, M., Wokaun, A., & Büchi, F. N. (2006).
Experimental investigation of coupling phenomena in polymer electrolyte fuel cell
stacks. Journal of Power Sources. Elsevier. https://doi.org/10.1016/j.jpowsour.2006.06.007
chicago: Santis, Marco, Stefan Alexander Freunberger, Matthias Papra, Alexander
Wokaun, and Felix N. Büchi. “Experimental Investigation of Coupling Phenomena
in Polymer Electrolyte Fuel Cell Stacks.” Journal of Power Sources. Elsevier,
2006. https://doi.org/10.1016/j.jpowsour.2006.06.007.
ieee: M. Santis, S. A. Freunberger, M. Papra, A. Wokaun, and F. N. Büchi, “Experimental
investigation of coupling phenomena in polymer electrolyte fuel cell stacks,”
Journal of Power Sources, vol. 161, no. 2. Elsevier, pp. 1076–1083, 2006.
ista: Santis M, Freunberger SA, Papra M, Wokaun A, Büchi FN. 2006. Experimental
investigation of coupling phenomena in polymer electrolyte fuel cell stacks. Journal
of Power Sources. 161(2), 1076–1083.
mla: Santis, Marco, et al. “Experimental Investigation of Coupling Phenomena in
Polymer Electrolyte Fuel Cell Stacks.” Journal of Power Sources, vol. 161,
no. 2, Elsevier, 2006, pp. 1076–83, doi:10.1016/j.jpowsour.2006.06.007.
short: M. Santis, S.A. Freunberger, M. Papra, A. Wokaun, F.N. Büchi, Journal of
Power Sources 161 (2006) 1076–1083.
date_created: 2020-01-15T12:22:56Z
date_published: 2006-10-27T00:00:00Z
date_updated: 2021-01-12T08:13:06Z
day: '27'
doi: 10.1016/j.jpowsour.2006.06.007
extern: '1'
intvolume: ' 161'
issue: '2'
language:
- iso: eng
month: '10'
oa_version: None
page: 1076-1083
publication: Journal of Power Sources
publication_identifier:
issn:
- 0378-7753
publication_status: published
publisher: Elsevier
status: public
title: Experimental investigation of coupling phenomena in polymer electrolyte fuel
cell stacks
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 161
year: '2006'
...
---
_id: '7326'
abstract:
- lang: eng
text: 'Often the properties of a single cell are considered as representative for
a complete polymer electrolyte fuel cell stack or even a fuel cell system. In
some cases this comes close, however, in many real cases differences on several
scales become important. Cell interaction phenomena in fuel cell stacks that arise
from inequalities between adjacent cells are investigated in detail experimentally.
For that, a specialized 2-cell stack with advanced localized diagnostics was developed.
The results show that inequalities propagate by electrical coupling, inhomogeneous
cell polarization and inducing in-plane current in the common bipolar plate. The
effects of the different loss-mechanisms are analyzed and quantified. '
article_processing_charge: No
author:
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Marco
full_name: Santis, Marco
last_name: Santis
citation:
ama: 'Büchi FN, Freunberger SA, Santis M. What is learned beyond the scale of single
cells? In: ECS Transactions. Vol 3. ECS; 2006:963-968. doi:10.1149/1.2356215'
apa: 'Büchi, F. N., Freunberger, S. A., & Santis, M. (2006). What is learned
beyond the scale of single cells? In ECS Transactions (Vol. 3, pp. 963–968).
Cancun, Mexico: ECS. https://doi.org/10.1149/1.2356215'
chicago: Büchi, Felix N., Stefan Alexander Freunberger, and Marco Santis. “What
Is Learned beyond the Scale of Single Cells?” In ECS Transactions, 3:963–68.
ECS, 2006. https://doi.org/10.1149/1.2356215.
ieee: F. N. Büchi, S. A. Freunberger, and M. Santis, “What is learned beyond the
scale of single cells?,” in ECS Transactions, Cancun, Mexico, 2006, vol.
3, no. 1, pp. 963–968.
ista: Büchi FN, Freunberger SA, Santis M. 2006. What is learned beyond the scale
of single cells? ECS Transactions. ECS Meeting vol. 3, 963–968.
mla: Büchi, Felix N., et al. “What Is Learned beyond the Scale of Single Cells?”
ECS Transactions, vol. 3, no. 1, ECS, 2006, pp. 963–68, doi:10.1149/1.2356215.
short: F.N. Büchi, S.A. Freunberger, M. Santis, in:, ECS Transactions, ECS, 2006,
pp. 963–968.
conference:
end_date: 2006-11-03
location: Cancun, Mexico
name: ECS Meeting
start_date: 2006-10-29
date_created: 2020-01-15T12:22:44Z
date_published: 2006-11-03T00:00:00Z
date_updated: 2021-01-12T08:13:05Z
day: '03'
doi: 10.1149/1.2356215
extern: '1'
intvolume: ' 3'
issue: '1'
language:
- iso: eng
month: '11'
oa_version: None
page: 963-968
publication: ECS Transactions
publication_status: published
publisher: ECS
quality_controlled: '1'
status: public
title: What is learned beyond the scale of single cells?
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 3
year: '2006'
...
---
_id: '7329'
abstract:
- lang: eng
text: A novel measurement principle for measuring the current distribution in polymer
electrolyte fuel cells (PEFCs) is introduced. It allows, in contrast to all other
known techniques, for the first time for a resolution smaller than the channel/rib
scale of the flow field in PEFCs. The current density is obtained by considering
the electron conductors in the cell as a two-dimensional resistor with the voltage
drop caused by the current. The method was applied to a cell operated on oxygen
up to high current densities. The results show that the ohmic resistances govern
the current distribution in the low current regime, whereas mass transport limitations
hamper the current production under the land at high loads.
article_processing_charge: No
article_type: original
author:
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Mathias
full_name: Reum, Mathias
last_name: Reum
- first_name: Alexander
full_name: Wokaun, Alexander
last_name: Wokaun
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
citation:
ama: Freunberger SA, Reum M, Wokaun A, Büchi FN. Expanding current distribution
measurement in PEFCs to sub-millimeter resolution. Electrochemistry Communications.
2006;8(9):1435-1438. doi:10.1016/j.elecom.2006.05.032
apa: Freunberger, S. A., Reum, M., Wokaun, A., & Büchi, F. N. (2006). Expanding
current distribution measurement in PEFCs to sub-millimeter resolution. Electrochemistry
Communications. Elsevier. https://doi.org/10.1016/j.elecom.2006.05.032
chicago: Freunberger, Stefan Alexander, Mathias Reum, Alexander Wokaun, and Felix
N. Büchi. “Expanding Current Distribution Measurement in PEFCs to Sub-Millimeter
Resolution.” Electrochemistry Communications. Elsevier, 2006. https://doi.org/10.1016/j.elecom.2006.05.032.
ieee: S. A. Freunberger, M. Reum, A. Wokaun, and F. N. Büchi, “Expanding current
distribution measurement in PEFCs to sub-millimeter resolution,” Electrochemistry
Communications, vol. 8, no. 9. Elsevier, pp. 1435–1438, 2006.
ista: Freunberger SA, Reum M, Wokaun A, Büchi FN. 2006. Expanding current distribution
measurement in PEFCs to sub-millimeter resolution. Electrochemistry Communications.
8(9), 1435–1438.
mla: Freunberger, Stefan Alexander, et al. “Expanding Current Distribution Measurement
in PEFCs to Sub-Millimeter Resolution.” Electrochemistry Communications,
vol. 8, no. 9, Elsevier, 2006, pp. 1435–38, doi:10.1016/j.elecom.2006.05.032.
short: S.A. Freunberger, M. Reum, A. Wokaun, F.N. Büchi, Electrochemistry Communications
8 (2006) 1435–1438.
date_created: 2020-01-15T12:23:22Z
date_published: 2006-09-01T00:00:00Z
date_updated: 2021-01-12T08:13:06Z
day: '01'
doi: 10.1016/j.elecom.2006.05.032
extern: '1'
intvolume: ' 8'
issue: '9'
language:
- iso: eng
month: '09'
oa_version: None
page: 1435-1438
publication: Electrochemistry Communications
publication_identifier:
issn:
- 1388-2481
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Expanding current distribution measurement in PEFCs to sub-millimeter resolution
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 8
year: '2006'
...
---
_id: '7330'
abstract:
- lang: eng
text: Polymer electrolyte fuel cells (PE fuel cells) working with air at low stoichiometries
(<2.0) and standard electrochemical components show a high degree of inhomogeneity
in the current density distribution over the active area. An inhomogeneous current
density distribution leads to a non-uniform utilization of the active area, which
could negatively affect the time of life of the cells. Furthermore, it is also
believed to lower cell performance. In this work, the homogenization of the current
density, realized by means of tailored cathodes with along-the-air-channel redistributed
catalyst loadings, is investigated. The air stoichiometry range for which a homogenization
of the current density is achieved depends upon the gradient with which the catalyst
is redistributed along the air channel. A gentle increasing catalyst loading profile
homogenizes the current density at relatively higher air stoichiometries, while
a steeper profile is suited better for lower air stoichiometries. The results
show that a homogenization of the current density by means of redistributed catalyst
loading has negative effects on cell performance. Model calculations corroborate
the experimental findings on homogenization of the current density and deliver
an explanation for the decrease in cell performance.
article_processing_charge: No
article_type: original
author:
- first_name: M.
full_name: Santis, M.
last_name: Santis
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: A.
full_name: Reiner, A.
last_name: Reiner
- first_name: F.N.
full_name: Büchi, F.N.
last_name: Büchi
citation:
ama: Santis M, Freunberger SA, Reiner A, Büchi FN. Homogenization of the current
density in polymer electrolyte fuel cells by in-plane cathode catalyst gradients.
Electrochimica Acta. 2006;51(25):5383-5393. doi:10.1016/j.electacta.2006.02.008
apa: Santis, M., Freunberger, S. A., Reiner, A., & Büchi, F. N. (2006). Homogenization
of the current density in polymer electrolyte fuel cells by in-plane cathode catalyst
gradients. Electrochimica Acta. Elsevier. https://doi.org/10.1016/j.electacta.2006.02.008
chicago: Santis, M., Stefan Alexander Freunberger, A. Reiner, and F.N. Büchi. “Homogenization
of the Current Density in Polymer Electrolyte Fuel Cells by In-Plane Cathode Catalyst
Gradients.” Electrochimica Acta. Elsevier, 2006. https://doi.org/10.1016/j.electacta.2006.02.008.
ieee: M. Santis, S. A. Freunberger, A. Reiner, and F. N. Büchi, “Homogenization
of the current density in polymer electrolyte fuel cells by in-plane cathode catalyst
gradients,” Electrochimica Acta, vol. 51, no. 25. Elsevier, pp. 5383–5393,
2006.
ista: Santis M, Freunberger SA, Reiner A, Büchi FN. 2006. Homogenization of the
current density in polymer electrolyte fuel cells by in-plane cathode catalyst
gradients. Electrochimica Acta. 51(25), 5383–5393.
mla: Santis, M., et al. “Homogenization of the Current Density in Polymer Electrolyte
Fuel Cells by In-Plane Cathode Catalyst Gradients.” Electrochimica Acta,
vol. 51, no. 25, Elsevier, 2006, pp. 5383–93, doi:10.1016/j.electacta.2006.02.008.
short: M. Santis, S.A. Freunberger, A. Reiner, F.N. Büchi, Electrochimica Acta 51
(2006) 5383–5393.
date_created: 2020-01-15T12:23:34Z
date_published: 2006-07-01T00:00:00Z
date_updated: 2021-01-12T08:13:07Z
day: '01'
doi: 10.1016/j.electacta.2006.02.008
extern: '1'
intvolume: ' 51'
issue: '25'
language:
- iso: eng
month: '07'
oa_version: None
page: 5383-5393
publication: Electrochimica Acta
publication_identifier:
issn:
- 0013-4686
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Homogenization of the current density in polymer electrolyte fuel cells by
in-plane cathode catalyst gradients
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 51
year: '2006'
...
---
_id: '7332'
abstract:
- lang: eng
text: A quasi-two-dimensional, along-the-channel mass and heat-transfer model for
a proton exchange membrane fuel cell (PEFC) is described and validated against
experimental current distribution data. The model is formulated in a dimensional
manner, i.e., local transport phenomena are treated one-dimensional in through-plane
direction and coupled in-plane by convective transport in the gas and coolant
channels. Thus, a two-dimensional slice running through the repetitive unit of
a cell from the anode channel via membrane-electrode assembly (MEA) and cathode
channel to the coolant channel and from inlet to outlet is modeled. The aim of
the work is to elucidate the influence of operating conditions such as feed gas
humidities and stoichiometric ratios on the along-the-channel current density
distribution and to identify the distinct underlying voltage loss mechanisms.
Furthermore, a complicated technical flow field is modeled by a combination of
co- and counterflow subdomains and compared with experimental current densities.
article_number: A396
article_processing_charge: No
article_type: original
author:
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Marco
full_name: Santis, Marco
last_name: Santis
- first_name: Ingo A.
full_name: Schneider, Ingo A.
last_name: Schneider
- first_name: Alexander
full_name: Wokaun, Alexander
last_name: Wokaun
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
citation:
ama: Freunberger SA, Santis M, Schneider IA, Wokaun A, Büchi FN. In-plane effects
in large-scale PEMFCs. Journal of The Electrochemical Society. 2006;153(2).
doi:10.1149/1.2150150
apa: Freunberger, S. A., Santis, M., Schneider, I. A., Wokaun, A., & Büchi,
F. N. (2006). In-plane effects in large-scale PEMFCs. Journal of The Electrochemical
Society. The Electrochemical Society. https://doi.org/10.1149/1.2150150
chicago: Freunberger, Stefan Alexander, Marco Santis, Ingo A. Schneider, Alexander
Wokaun, and Felix N. Büchi. “In-Plane Effects in Large-Scale PEMFCs.” Journal
of The Electrochemical Society. The Electrochemical Society, 2006. https://doi.org/10.1149/1.2150150.
ieee: S. A. Freunberger, M. Santis, I. A. Schneider, A. Wokaun, and F. N. Büchi,
“In-plane effects in large-scale PEMFCs,” Journal of The Electrochemical Society,
vol. 153, no. 2. The Electrochemical Society, 2006.
ista: Freunberger SA, Santis M, Schneider IA, Wokaun A, Büchi FN. 2006. In-plane
effects in large-scale PEMFCs. Journal of The Electrochemical Society. 153(2),
A396.
mla: Freunberger, Stefan Alexander, et al. “In-Plane Effects in Large-Scale PEMFCs.”
Journal of The Electrochemical Society, vol. 153, no. 2, A396, The Electrochemical
Society, 2006, doi:10.1149/1.2150150.
short: S.A. Freunberger, M. Santis, I.A. Schneider, A. Wokaun, F.N. Büchi, Journal
of The Electrochemical Society 153 (2006).
date_created: 2020-01-15T12:24:00Z
date_published: 2006-01-04T00:00:00Z
date_updated: 2021-01-12T08:13:08Z
day: '04'
doi: 10.1149/1.2150150
extern: '1'
intvolume: ' 153'
issue: '2'
language:
- iso: eng
month: '01'
oa_version: None
publication: Journal of The Electrochemical Society
publication_identifier:
issn:
- 0013-4651
publication_status: published
publisher: The Electrochemical Society
quality_controlled: '1'
status: public
title: In-plane effects in large-scale PEMFCs
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 153
year: '2006'
...
---
_id: '7331'
abstract:
- lang: eng
text: A previously developed mathematical model for water management and current
density distribution in a polymer electrolyte fuel cell (PEFCs) is employed to
investigate the effects of cooling strategies on cell performance. The model describes
a two-dimensional slice through the cell along the channels and through the entire
cell sandwich including the coolant channels and the bipolar plate. Arbitrary
flow arrangements of fuel, oxidant, and coolant stream directions can be described.
Due to the serious impact of temperature on all processes in the PEFC, both the
relative direction of the coolant stream to the gas streams and its mass flow
turns out to significantly affect the cell performance. Besides influencing the
electrochemical reaction and all kinds of mass transfer temperature, variations
predominantly alter the local membrane hydration distribution and subseqently
its conductivity.
article_number: A909
article_processing_charge: No
article_type: original
author:
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Alexander
full_name: Wokaun, Alexander
last_name: Wokaun
- first_name: Felix N.
full_name: Büchi, Felix N.
last_name: Büchi
citation:
ama: 'Freunberger SA, Wokaun A, Büchi FN. In-plane effects in large-scale PEFCs:
II. The influence of cooling strategy on cell performance. Journal of The Electrochemical
Society. 2006;153(5). doi:10.1149/1.2185282'
apa: 'Freunberger, S. A., Wokaun, A., & Büchi, F. N. (2006). In-plane effects
in large-scale PEFCs: II. The influence of cooling strategy on cell performance.
Journal of The Electrochemical Society. The Electrochemical Society. https://doi.org/10.1149/1.2185282'
chicago: 'Freunberger, Stefan Alexander, Alexander Wokaun, and Felix N. Büchi.
“In-Plane Effects in Large-Scale PEFCs: II. The Influence of Cooling Strategy
on Cell Performance.” Journal of The Electrochemical Society. The Electrochemical
Society, 2006. https://doi.org/10.1149/1.2185282.'
ieee: 'S. A. Freunberger, A. Wokaun, and F. N. Büchi, “In-plane effects in large-scale
PEFCs: II. The influence of cooling strategy on cell performance,” Journal
of The Electrochemical Society, vol. 153, no. 5. The Electrochemical Society,
2006.'
ista: 'Freunberger SA, Wokaun A, Büchi FN. 2006. In-plane effects in large-scale
PEFCs: II. The influence of cooling strategy on cell performance. Journal of The
Electrochemical Society. 153(5), A909.'
mla: 'Freunberger, Stefan Alexander, et al. “In-Plane Effects in Large-Scale PEFCs:
II. The Influence of Cooling Strategy on Cell Performance.” Journal of The
Electrochemical Society, vol. 153, no. 5, A909, The Electrochemical Society,
2006, doi:10.1149/1.2185282.'
short: S.A. Freunberger, A. Wokaun, F.N. Büchi, Journal of The Electrochemical
Society 153 (2006).
date_created: 2020-01-15T12:23:46Z
date_published: 2006-03-27T00:00:00Z
date_updated: 2021-01-12T08:13:08Z
day: '27'
doi: 10.1149/1.2185282
extern: '1'
intvolume: ' 153'
issue: '5'
language:
- iso: eng
month: '03'
oa_version: None
publication: Journal of The Electrochemical Society
publication_identifier:
issn:
- 0013-4651
publication_status: published
publisher: The Electrochemical Society
quality_controlled: '1'
status: public
title: 'In-plane effects in large-scale PEFCs: II. The influence of cooling strategy
on cell performance'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 153
year: '2006'
...
---
_id: '854'
abstract:
- lang: eng
text: Phylogenetic relationships between the extinct woolly mammoth (Mammuthus primigenius),
and the Asian (Elephas maximus) and African savanna (Loxodonta africana) elephants
remain unresolved. Here, we report the sequence of the complete mitochondrial
genome (16,842 base pairs) of a woolly mammoth extracted from permafrost-preserved
remains from the Pleistocene epoch - the oldest mitochondrial genome sequence
determined to date. We demonstrate that well-preserved mitochondrial genome fragments,
as long as ∼1,600-1700 base pairs, can be retrieved from pre-Holocene remains
of an extinct species. Phylogenetic reconstruction of the Elephantinae clade suggests
that M. primigenius and E. maximus are sister species that diverged soon after
their common ancestor split from the L. africana lineage. Low nucleotide diversity
found between independently determined mitochondrial genomic sequences of woolly
mammoths separated geographically and in time suggests that north-eastern Siberia
was occupied by a relatively homogeneous population of M. primigenius throughout
the late Pleistocene.
acknowledgement: |-
FAK is supported by the NSF Graduate Research Fellowship.
We thank the Natural History Museum, North-Eastern Research Center, Far Eastern Branch of the Russian Academy of Sciences for photographic material ofM. primigenius leg, V. A. Nikishina for artwork and technical support, Y.B. Yurov, G. Dvoryanchikov, N. Riazanskaya and T. Kolesnikova for technical support, K. Mehren and C. Gray for elephant specimens, and V. Y. Solovyev for help with artwork of animal images.
author:
- first_name: Evgeny
full_name: Rogaev, Evgeny I
last_name: Rogaev
- first_name: Yuri
full_name: Moliaka, Yuri K
last_name: Moliaka
- first_name: Boris
full_name: Malyarchuk, Boris A
last_name: Malyarchuk
- first_name: Fyodor
full_name: Fyodor Kondrashov
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
- first_name: Miroslava
full_name: Derenko, Miroslava V
last_name: Derenko
- first_name: Ilya
full_name: Chumakov, Ilya M
last_name: Chumakov
- first_name: Anastasia
full_name: Grigorenko, Anastasia P
last_name: Grigorenko
citation:
ama: Rogaev E, Moliaka Y, Malyarchuk B, et al. Complete mitochondrial genome and
phylogeny of pleistocene mammoth Mammuthus primigenius. PLoS Biology. 2006;4(3):0403-0410.
doi:10.1371/journal.pbio.0040073
apa: Rogaev, E., Moliaka, Y., Malyarchuk, B., Kondrashov, F., Derenko, M., Chumakov,
I., & Grigorenko, A. (2006). Complete mitochondrial genome and phylogeny of
pleistocene mammoth Mammuthus primigenius. PLoS Biology. Public Library
of Science. https://doi.org/10.1371/journal.pbio.0040073
chicago: Rogaev, Evgeny, Yuri Moliaka, Boris Malyarchuk, Fyodor Kondrashov, Miroslava
Derenko, Ilya Chumakov, and Anastasia Grigorenko. “Complete Mitochondrial Genome
and Phylogeny of Pleistocene Mammoth Mammuthus Primigenius.” PLoS Biology.
Public Library of Science, 2006. https://doi.org/10.1371/journal.pbio.0040073.
ieee: E. Rogaev et al., “Complete mitochondrial genome and phylogeny of pleistocene
mammoth Mammuthus primigenius,” PLoS Biology, vol. 4, no. 3. Public Library
of Science, pp. 0403–0410, 2006.
ista: Rogaev E, Moliaka Y, Malyarchuk B, Kondrashov F, Derenko M, Chumakov I, Grigorenko
A. 2006. Complete mitochondrial genome and phylogeny of pleistocene mammoth Mammuthus
primigenius. PLoS Biology. 4(3), 0403–0410.
mla: Rogaev, Evgeny, et al. “Complete Mitochondrial Genome and Phylogeny of Pleistocene
Mammoth Mammuthus Primigenius.” PLoS Biology, vol. 4, no. 3, Public Library
of Science, 2006, pp. 0403–10, doi:10.1371/journal.pbio.0040073.
short: E. Rogaev, Y. Moliaka, B. Malyarchuk, F. Kondrashov, M. Derenko, I. Chumakov,
A. Grigorenko, PLoS Biology 4 (2006) 0403–0410.
date_created: 2018-12-11T11:48:51Z
date_published: 2006-03-01T00:00:00Z
date_updated: 2021-01-12T08:19:58Z
day: '01'
doi: 10.1371/journal.pbio.0040073
extern: 1
intvolume: ' 4'
issue: '3'
month: '03'
page: 0403 - 0410
publication: PLoS Biology
publication_status: published
publisher: Public Library of Science
publist_id: '6794'
quality_controlled: 0
status: public
title: Complete mitochondrial genome and phylogeny of pleistocene mammoth Mammuthus
primigenius
type: journal_article
volume: 4
year: '2006'
...
---
_id: '868'
abstract:
- lang: eng
text: 'Background: The glyoxylate cycle is thought to be present in bacteria, protists,
plants, fungi, and nematodes, but not in other Metazoa. However, activity of the
glyoxylate cycle enzymes, malate synthase (MS) and isocitrate lyase (ICL), in
animal tissues has been reported. In order to clarify the status of the MS and
ICL genes in animals and get an insight into their evolution, we undertook a comparative-genomic
study. Results: Using sequence similarity searches, we identified MS genes in
arthropods, echinoderms, and vertebrates, including platypus and opossum, but
not in the numerous sequenced genomes of placental mammals. The regions of the
placental mammals'' genomes expected to code for malate synthase, as determined
by comparison of the gene orders in vertebrate genomes, show clear similarity
to the opossum MS sequence but contain stop codons, indicating that the MS gene
became a pseudogene in placental mammals. By contrast, the ICL gene is undetectable
in animals other than the nematodes that possess a bifunctional, fused ICL-MS
gene. Examination of phylogenetic trees of MS and ICL suggests multiple horizontal
gene transfer events that probably went in both directions between several bacterial
and eukaryotic lineages. The strongest evidence was obtained for the acquisition
of the bifunctional ICL-MS gene from an as yet unknown bacterial source with the
corresponding operonic organization by the common ancestor of the nematodes. Conclusion:
The distribution of the MS and ICL genes in animals suggests that either they
encode alternative enzymes of the glyoxylate cycle that are not orthologous to
the known MS and ICL or the animal MS acquired a new function that remains to
be characterized. Regardless of the ultimate solution to this conundrum, the genes
for the glyoxylate cycle enzymes present a remarkable variety of evolutionary
events including unusual horizontal gene transfer from bacteria to animals.'
acknowledgement: The authors thank Alexey Kondrashov for suggesting the possibility
of non- orthologous gene displacement in glyoxylate cycle specific enzymes and for
critical reading of this manuscript. FAK is a National Science Foundation Graduate
Fellow.
author:
- first_name: Fyodor
full_name: Fyodor Kondrashov
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
- first_name: Eugene
full_name: Koonin, Eugene V
last_name: Koonin
- first_name: Igor
full_name: Morgunov, Igor G
last_name: Morgunov
- first_name: Tatiana
full_name: Finogenova, Tatiana V
last_name: Finogenova
- first_name: Marie
full_name: Kondrashova, Marie N
last_name: Kondrashova
citation:
ama: Kondrashov F, Koonin E, Morgunov I, Finogenova T, Kondrashova M. Evolution
of glyoxylate cycle enzymes in Metazoa Evidence of multiple horizontal transfer
events and pseudogene formation. Biology Direct. 2006;1. doi:10.1186/1745-6150-1-31
apa: Kondrashov, F., Koonin, E., Morgunov, I., Finogenova, T., & Kondrashova,
M. (2006). Evolution of glyoxylate cycle enzymes in Metazoa Evidence of multiple
horizontal transfer events and pseudogene formation. Biology Direct. BioMed
Central. https://doi.org/10.1186/1745-6150-1-31
chicago: Kondrashov, Fyodor, Eugene Koonin, Igor Morgunov, Tatiana Finogenova, and
Marie Kondrashova. “Evolution of Glyoxylate Cycle Enzymes in Metazoa Evidence
of Multiple Horizontal Transfer Events and Pseudogene Formation.” Biology Direct.
BioMed Central, 2006. https://doi.org/10.1186/1745-6150-1-31.
ieee: F. Kondrashov, E. Koonin, I. Morgunov, T. Finogenova, and M. Kondrashova,
“Evolution of glyoxylate cycle enzymes in Metazoa Evidence of multiple horizontal
transfer events and pseudogene formation,” Biology Direct, vol. 1. BioMed
Central, 2006.
ista: Kondrashov F, Koonin E, Morgunov I, Finogenova T, Kondrashova M. 2006. Evolution
of glyoxylate cycle enzymes in Metazoa Evidence of multiple horizontal transfer
events and pseudogene formation. Biology Direct. 1.
mla: Kondrashov, Fyodor, et al. “Evolution of Glyoxylate Cycle Enzymes in Metazoa
Evidence of Multiple Horizontal Transfer Events and Pseudogene Formation.” Biology
Direct, vol. 1, BioMed Central, 2006, doi:10.1186/1745-6150-1-31.
short: F. Kondrashov, E. Koonin, I. Morgunov, T. Finogenova, M. Kondrashova, Biology
Direct 1 (2006).
date_created: 2018-12-11T11:48:56Z
date_published: 2006-10-23T00:00:00Z
date_updated: 2021-01-12T08:20:31Z
day: '23'
doi: 10.1186/1745-6150-1-31
extern: 1
intvolume: ' 1'
month: '10'
publication: Biology Direct
publication_status: published
publisher: BioMed Central
publist_id: '6778'
quality_controlled: 0
status: public
title: Evolution of glyoxylate cycle enzymes in Metazoa Evidence of multiple horizontal
transfer events and pseudogene formation
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
volume: 1
year: '2006'
...
---
_id: '873'
abstract:
- lang: eng
text: New genes commonly appear through complete or partial duplications of pre-existing
genes. Duplications of long DNA segments are constantly produced by rare mutations,
may become fixed in a population by selection or random drift, and are subject
to divergent evolution of the paralogous sequences after fixation, although gene
conversion can impede this process. New data shed some light on each of these
processes. Mutations which involve duplications can occur through at least two
different mechanisms, backward strand slippage during DNA replication and unequal
crossing-over. The background rate of duplication of a complete gene in humans
is 10-9-10-10 per generation, although many genes located within hot-spots of
large-scale mutation are duplicated much more often. Many gene duplications affect
fitness strongly, and are responsible, through gene dosage effects, for a number
of genetic diseases. However, high levels of intrapopulation polymorphism caused
by presence or absence of long, gene-containing DNA segments imply that some duplications
are not under strong selection. The polymorphism to fixation ratios appear to
be approximately the same for gene duplications and for presumably selectively
neutral nucleotide substitutions, which, according to the McDonald-Kreitman test,
is consistent with selective neutrality of duplications. However, this pattern
can also be due to negative selection against most of segregating duplications
and positive selection for at least some duplications which become fixed. Patterns
in post-fixation evolution of duplicated genes do not easily reveal the causes
of fixations. Many gene duplications which became fixed recently in a variety
of organisms were positively selected because the increased expression of the
corresponding genes was beneficial. The effects of gene dosage provide a unified
framework for studying all phases of the life history of a gene duplication. Application
of well-known methods of evolutionary genetics to accumulating data on new, polymorphic,
and fixed duplication will enhance our understanding of the role of natural selection
in the evolution by gene duplication.
author:
- first_name: Fyodor
full_name: Fyodor Kondrashov
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
- first_name: Alexey
full_name: Kondrashov, Alexey S
last_name: Kondrashov
citation:
ama: Kondrashov F, Kondrashov A. Role of selection in fixation of gene duplications.
Journal of Theoretical Biology. 2006;239(2):141-151. doi:10.1016/j.jtbi.2005.08.033
apa: Kondrashov, F., & Kondrashov, A. (2006). Role of selection in fixation
of gene duplications. Journal of Theoretical Biology. Elsevier. https://doi.org/10.1016/j.jtbi.2005.08.033
chicago: Kondrashov, Fyodor, and Alexey Kondrashov. “Role of Selection in Fixation
of Gene Duplications.” Journal of Theoretical Biology. Elsevier, 2006.
https://doi.org/10.1016/j.jtbi.2005.08.033.
ieee: F. Kondrashov and A. Kondrashov, “Role of selection in fixation of gene duplications,”
Journal of Theoretical Biology, vol. 239, no. 2. Elsevier, pp. 141–151,
2006.
ista: Kondrashov F, Kondrashov A. 2006. Role of selection in fixation of gene duplications.
Journal of Theoretical Biology. 239(2), 141–151.
mla: Kondrashov, Fyodor, and Alexey Kondrashov. “Role of Selection in Fixation of
Gene Duplications.” Journal of Theoretical Biology, vol. 239, no. 2, Elsevier,
2006, pp. 141–51, doi:10.1016/j.jtbi.2005.08.033.
short: F. Kondrashov, A. Kondrashov, Journal of Theoretical Biology 239 (2006) 141–151.
date_created: 2018-12-11T11:48:57Z
date_published: 2006-03-21T00:00:00Z
date_updated: 2021-01-12T08:20:47Z
day: '21'
doi: 10.1016/j.jtbi.2005.08.033
extern: 1
intvolume: ' 239'
issue: '2'
month: '03'
page: 141 - 151
publication: Journal of Theoretical Biology
publication_status: published
publisher: Elsevier
publist_id: '6773'
quality_controlled: 0
status: public
title: Role of selection in fixation of gene duplications
type: journal_article
volume: 239
year: '2006'
...
---
_id: '8489'
abstract:
- lang: eng
text: Structure elucidation of proteins by either NMR or X‐ray crystallography often
requires the screening of a large number of samples for promising protein constructs
and optimum solution conditions. For large‐scale screening of protein samples
in solution, robust methods are needed that allow a rapid assessment of the folding
of a polypeptide under diverse sample conditions. Here we present HET‐SOFAST NMR,
a highly sensitive new method for semi‐quantitative characterization of the structural
compactness and heterogeneity of polypeptide chains in solution. On the basis
of one‐dimensional 1H HET‐SOFAST NMR data, obtained on well‐folded, molten globular,
partially‐ and completely unfolded proteins, we define empirical thresholds that
can be used as quantitative benchmarks for protein compactness. For 15N‐enriched
protein samples, two‐dimensional 1H‐15N HET‐SOFAST correlation spectra provide
site‐specific information about the structural heterogeneity along the polypeptide
chain.
article_processing_charge: No
article_type: original
author:
- first_name: Paul
full_name: Schanda, Paul
id: 7B541462-FAF6-11E9-A490-E8DFE5697425
last_name: Schanda
orcid: 0000-0002-9350-7606
- first_name: Vincent
full_name: Forge, Vincent
last_name: Forge
- first_name: Bernhard
full_name: Brutscher, Bernhard
last_name: Brutscher
citation:
ama: Schanda P, Forge V, Brutscher B. HET-SOFAST NMR for fast detection of structural
compactness and heterogeneity along polypeptide chains. Magnetic Resonance
in Chemistry. 2006;44(S1):S177-S184. doi:10.1002/mrc.1825
apa: Schanda, P., Forge, V., & Brutscher, B. (2006). HET-SOFAST NMR for fast
detection of structural compactness and heterogeneity along polypeptide chains.
Magnetic Resonance in Chemistry. Wiley. https://doi.org/10.1002/mrc.1825
chicago: Schanda, Paul, Vincent Forge, and Bernhard Brutscher. “HET-SOFAST NMR for
Fast Detection of Structural Compactness and Heterogeneity along Polypeptide Chains.”
Magnetic Resonance in Chemistry. Wiley, 2006. https://doi.org/10.1002/mrc.1825.
ieee: P. Schanda, V. Forge, and B. Brutscher, “HET-SOFAST NMR for fast detection
of structural compactness and heterogeneity along polypeptide chains,” Magnetic
Resonance in Chemistry, vol. 44, no. S1. Wiley, pp. S177–S184, 2006.
ista: Schanda P, Forge V, Brutscher B. 2006. HET-SOFAST NMR for fast detection of
structural compactness and heterogeneity along polypeptide chains. Magnetic Resonance
in Chemistry. 44(S1), S177–S184.
mla: Schanda, Paul, et al. “HET-SOFAST NMR for Fast Detection of Structural Compactness
and Heterogeneity along Polypeptide Chains.” Magnetic Resonance in Chemistry,
vol. 44, no. S1, Wiley, 2006, pp. S177–84, doi:10.1002/mrc.1825.
short: P. Schanda, V. Forge, B. Brutscher, Magnetic Resonance in Chemistry 44 (2006)
S177–S184.
date_created: 2020-09-18T10:13:42Z
date_published: 2006-07-06T00:00:00Z
date_updated: 2021-01-12T08:19:37Z
day: '06'
doi: 10.1002/mrc.1825
extern: '1'
intvolume: ' 44'
issue: S1
language:
- iso: eng
month: '07'
oa_version: None
page: S177-S184
publication: Magnetic Resonance in Chemistry
publication_identifier:
issn:
- 0749-1581
- 1097-458X
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: HET-SOFAST NMR for fast detection of structural compactness and heterogeneity
along polypeptide chains
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 44
year: '2006'
...
---
_id: '8488'
abstract:
- lang: eng
text: We demonstrate for different protein samples that three-dimensional HNCO and
HNCA correlation spectra may be recorded in a few minutes acquisition time using
the band-selective excitation short-transient sequences presented here. This opens
new perspectives for the NMR structural investigation of unstable protein samples
and real-time site-resolved studies of protein kinetics.
article_processing_charge: No
article_type: original
author:
- first_name: Paul
full_name: Schanda, Paul
id: 7B541462-FAF6-11E9-A490-E8DFE5697425
last_name: Schanda
orcid: 0000-0002-9350-7606
- first_name: Hélène
full_name: Van Melckebeke, Hélène
last_name: Van Melckebeke
- first_name: Bernhard
full_name: Brutscher, Bernhard
last_name: Brutscher
citation:
ama: Schanda P, Van Melckebeke H, Brutscher B. Speeding up three-dimensional protein
NMR experiments to a few minutes. Journal of the American Chemical Society.
2006;128(28):9042-9043. doi:10.1021/ja062025p
apa: Schanda, P., Van Melckebeke, H., & Brutscher, B. (2006). Speeding up three-dimensional
protein NMR experiments to a few minutes. Journal of the American Chemical
Society. American Chemical Society. https://doi.org/10.1021/ja062025p
chicago: Schanda, Paul, Hélène Van Melckebeke, and Bernhard Brutscher. “Speeding
up Three-Dimensional Protein NMR Experiments to a Few Minutes.” Journal of
the American Chemical Society. American Chemical Society, 2006. https://doi.org/10.1021/ja062025p.
ieee: P. Schanda, H. Van Melckebeke, and B. Brutscher, “Speeding up three-dimensional
protein NMR experiments to a few minutes,” Journal of the American Chemical
Society, vol. 128, no. 28. American Chemical Society, pp. 9042–9043, 2006.
ista: Schanda P, Van Melckebeke H, Brutscher B. 2006. Speeding up three-dimensional
protein NMR experiments to a few minutes. Journal of the American Chemical Society.
128(28), 9042–9043.
mla: Schanda, Paul, et al. “Speeding up Three-Dimensional Protein NMR Experiments
to a Few Minutes.” Journal of the American Chemical Society, vol. 128,
no. 28, American Chemical Society, 2006, pp. 9042–43, doi:10.1021/ja062025p.
short: P. Schanda, H. Van Melckebeke, B. Brutscher, Journal of the American Chemical
Society 128 (2006) 9042–9043.
date_created: 2020-09-18T10:13:36Z
date_published: 2006-06-21T00:00:00Z
date_updated: 2021-01-12T08:19:37Z
day: '21'
doi: 10.1021/ja062025p
extern: '1'
intvolume: ' 128'
issue: '28'
keyword:
- Colloid and Surface Chemistry
- Biochemistry
- General Chemistry
- Catalysis
language:
- iso: eng
month: '06'
oa_version: None
page: 9042-9043
publication: Journal of the American Chemical Society
publication_identifier:
issn:
- 0002-7863
- 1520-5126
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
status: public
title: Speeding up three-dimensional protein NMR experiments to a few minutes
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 128
year: '2006'
...
---
_id: '8490'
abstract:
- lang: eng
text: We demonstrate the feasibility of recording 1H–15N correlation spectra of
proteins in only one second of acquisition time. The experiment combines recently
proposed SOFAST-HMQC with Hadamard-type 15N frequency encoding. This allows site-resolved
real-time NMR studies of kinetic processes in proteins with an increased time
resolution. The sensitivity of the experiment is sufficient to be applicable to
a wide range of molecular systems available at millimolar concentration on a high
magnetic field spectrometer.
article_processing_charge: No
article_type: original
author:
- first_name: Paul
full_name: Schanda, Paul
id: 7B541462-FAF6-11E9-A490-E8DFE5697425
last_name: Schanda
orcid: 0000-0002-9350-7606
- first_name: Bernhard
full_name: Brutscher, Bernhard
last_name: Brutscher
citation:
ama: Schanda P, Brutscher B. Hadamard frequency-encoded SOFAST-HMQC for ultrafast
two-dimensional protein NMR. Journal of Magnetic Resonance. 2006;178(2):334-339.
doi:10.1016/j.jmr.2005.10.007
apa: Schanda, P., & Brutscher, B. (2006). Hadamard frequency-encoded SOFAST-HMQC
for ultrafast two-dimensional protein NMR. Journal of Magnetic Resonance.
Elsevier. https://doi.org/10.1016/j.jmr.2005.10.007
chicago: Schanda, Paul, and Bernhard Brutscher. “Hadamard Frequency-Encoded SOFAST-HMQC
for Ultrafast Two-Dimensional Protein NMR.” Journal of Magnetic Resonance.
Elsevier, 2006. https://doi.org/10.1016/j.jmr.2005.10.007.
ieee: P. Schanda and B. Brutscher, “Hadamard frequency-encoded SOFAST-HMQC for ultrafast
two-dimensional protein NMR,” Journal of Magnetic Resonance, vol. 178,
no. 2. Elsevier, pp. 334–339, 2006.
ista: Schanda P, Brutscher B. 2006. Hadamard frequency-encoded SOFAST-HMQC for ultrafast
two-dimensional protein NMR. Journal of Magnetic Resonance. 178(2), 334–339.
mla: Schanda, Paul, and Bernhard Brutscher. “Hadamard Frequency-Encoded SOFAST-HMQC
for Ultrafast Two-Dimensional Protein NMR.” Journal of Magnetic Resonance,
vol. 178, no. 2, Elsevier, 2006, pp. 334–39, doi:10.1016/j.jmr.2005.10.007.
short: P. Schanda, B. Brutscher, Journal of Magnetic Resonance 178 (2006) 334–339.
date_created: 2020-09-18T10:13:51Z
date_published: 2006-02-01T00:00:00Z
date_updated: 2021-01-12T08:19:38Z
day: '01'
doi: 10.1016/j.jmr.2005.10.007
extern: '1'
intvolume: ' 178'
issue: '2'
keyword:
- Nuclear and High Energy Physics
- Biophysics
- Biochemistry
- Condensed Matter Physics
language:
- iso: eng
month: '02'
oa_version: None
page: 334-339
publication: Journal of Magnetic Resonance
publication_identifier:
issn:
- 1090-7807
publication_status: published
publisher: Elsevier
status: public
title: Hadamard frequency-encoded SOFAST-HMQC for ultrafast two-dimensional protein
NMR
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 178
year: '2006'
...
---
_id: '8514'
abstract:
- lang: eng
text: We study the extent to which the Hausdorff dimension of a compact subset of
an infinite-dimensional Banach space is affected by a typical mapping into a finite-dimensional
space. It is possible that the dimension drops under all such mappings, but the
amount by which it typically drops is controlled by the ‘thickness exponent’ of
the set, which was defined by Hunt and Kaloshin (Nonlinearity12 (1999), 1263–1275).
More precisely, let $X$ be a compact subset of a Banach space $B$ with thickness
exponent $\tau$ and Hausdorff dimension $d$. Let $M$ be any subspace of the (locally)
Lipschitz functions from $B$ to $\mathbb{R}^{m}$ that contains the space of bounded
linear functions. We prove that for almost every (in the sense of prevalence)
function $f \in M$, the Hausdorff dimension of $f(X)$ is at least $\min\{ m, d
/ (1 + \tau) \}$. We also prove an analogous result for a certain part of the
dimension spectra of Borel probability measures supported on $X$. The factor $1
/ (1 + \tau)$ can be improved to $1 / (1 + \tau / 2)$ if $B$ is a Hilbert space.
Since dimension cannot increase under a (locally) Lipschitz function, these theorems
become dimension preservation results when $\tau = 0$. We conjecture that many
of the attractors associated with the evolution equations of mathematical physics
have thickness exponent zero. We also discuss the sharpness of our results in
the case $\tau > 0$.
article_processing_charge: No
article_type: original
author:
- first_name: WILLIAM
full_name: OTT, WILLIAM
last_name: OTT
- first_name: BRIAN
full_name: HUNT, BRIAN
last_name: HUNT
- first_name: Vadim
full_name: Kaloshin, Vadim
id: FE553552-CDE8-11E9-B324-C0EBE5697425
last_name: Kaloshin
orcid: 0000-0002-6051-2628
citation:
ama: OTT W, HUNT B, Kaloshin V. The effect of projections on fractal sets and measures
in Banach spaces. Ergodic Theory and Dynamical Systems. 2006;26(3):869-891.
doi:10.1017/s0143385705000714
apa: OTT, W., HUNT, B., & Kaloshin, V. (2006). The effect of projections on
fractal sets and measures in Banach spaces. Ergodic Theory and Dynamical Systems.
Cambridge University Press. https://doi.org/10.1017/s0143385705000714
chicago: OTT, WILLIAM, BRIAN HUNT, and Vadim Kaloshin. “The Effect of Projections
on Fractal Sets and Measures in Banach Spaces.” Ergodic Theory and Dynamical
Systems. Cambridge University Press, 2006. https://doi.org/10.1017/s0143385705000714.
ieee: W. OTT, B. HUNT, and V. Kaloshin, “The effect of projections on fractal sets
and measures in Banach spaces,” Ergodic Theory and Dynamical Systems, vol.
26, no. 3. Cambridge University Press, pp. 869–891, 2006.
ista: OTT W, HUNT B, Kaloshin V. 2006. The effect of projections on fractal sets
and measures in Banach spaces. Ergodic Theory and Dynamical Systems. 26(3), 869–891.
mla: OTT, WILLIAM, et al. “The Effect of Projections on Fractal Sets and Measures
in Banach Spaces.” Ergodic Theory and Dynamical Systems, vol. 26, no. 3,
Cambridge University Press, 2006, pp. 869–91, doi:10.1017/s0143385705000714.
short: W. OTT, B. HUNT, V. Kaloshin, Ergodic Theory and Dynamical Systems 26 (2006)
869–891.
date_created: 2020-09-18T10:48:52Z
date_published: 2006-06-01T00:00:00Z
date_updated: 2021-01-12T08:19:48Z
day: '01'
doi: 10.1017/s0143385705000714
extern: '1'
intvolume: ' 26'
issue: '3'
language:
- iso: eng
month: '06'
oa_version: None
page: 869-891
publication: Ergodic Theory and Dynamical Systems
publication_identifier:
issn:
- 0143-3857
- 1469-4417
publication_status: published
publisher: Cambridge University Press
quality_controlled: '1'
status: public
title: The effect of projections on fractal sets and measures in Banach spaces
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 26
year: '2006'
...
---
_id: '8515'
abstract:
- lang: eng
text: "We consider the evolution of a set carried by a space periodic incompressible
stochastic flow in a Euclidean space. We\r\nreport on three main results obtained
in [8, 9, 10] concerning long time behaviour for a typical realization of the
stochastic flow. First, at time t most of the particles are at a distance of order
√t away from the origin. Moreover, we prove a Central Limit Theorem for the evolution
of a measure carried by the flow, which holds for almost every realization of
the flow. Second, we show the existence of a zero measure full Hausdorff dimension
set of points, which\r\nescape to infinity at a linear rate. Third, in the 2-dimensional
case, we study the set of points visited by the original set by time t. Such a
set, when scaled down by the factor of t, has a limiting non random shape."
article_processing_charge: No
author:
- first_name: Vadim
full_name: Kaloshin, Vadim
id: FE553552-CDE8-11E9-B324-C0EBE5697425
last_name: Kaloshin
orcid: 0000-0002-6051-2628
- first_name: D.
full_name: DOLGOPYAT, D.
last_name: DOLGOPYAT
- first_name: L.
full_name: KORALOV, L.
last_name: KORALOV
citation:
ama: 'Kaloshin V, DOLGOPYAT D, KORALOV L. Long time behaviour of periodic stochastic
flows. In: XIVth International Congress on Mathematical Physics. World
Scientific; 2006:290-295. doi:10.1142/9789812704016_0026'
apa: 'Kaloshin, V., DOLGOPYAT, D., & KORALOV, L. (2006). Long time behaviour
of periodic stochastic flows. In XIVth International Congress on Mathematical
Physics (pp. 290–295). Lisbon, Portugal: World Scientific. https://doi.org/10.1142/9789812704016_0026'
chicago: Kaloshin, Vadim, D. DOLGOPYAT, and L. KORALOV. “Long Time Behaviour of
Periodic Stochastic Flows.” In XIVth International Congress on Mathematical
Physics, 290–95. World Scientific, 2006. https://doi.org/10.1142/9789812704016_0026.
ieee: V. Kaloshin, D. DOLGOPYAT, and L. KORALOV, “Long time behaviour of periodic
stochastic flows,” in XIVth International Congress on Mathematical Physics,
Lisbon, Portugal, 2006, pp. 290–295.
ista: Kaloshin V, DOLGOPYAT D, KORALOV L. 2006. Long time behaviour of periodic
stochastic flows. XIVth International Congress on Mathematical Physics. International
Congress on Mathematical Physics, 290–295.
mla: Kaloshin, Vadim, et al. “Long Time Behaviour of Periodic Stochastic Flows.”
XIVth International Congress on Mathematical Physics, World Scientific,
2006, pp. 290–95, doi:10.1142/9789812704016_0026.
short: V. Kaloshin, D. DOLGOPYAT, L. KORALOV, in:, XIVth International Congress
on Mathematical Physics, World Scientific, 2006, pp. 290–295.
conference:
end_date: 2003-08-02
location: Lisbon, Portugal
name: International Congress on Mathematical Physics
start_date: 2003-07-28
date_created: 2020-09-18T10:48:59Z
date_published: 2006-03-01T00:00:00Z
date_updated: 2021-01-12T08:19:49Z
day: '01'
doi: 10.1142/9789812704016_0026
extern: '1'
language:
- iso: eng
month: '03'
oa_version: None
page: 290-295
publication: XIVth International Congress on Mathematical Physics
publication_identifier:
isbn:
- '9789812562012'
- '9789812704016'
publication_status: published
publisher: World Scientific
quality_controlled: '1'
status: public
title: Long time behaviour of periodic stochastic flows
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2006'
...
---
_id: '8513'
article_processing_charge: No
article_type: original
author:
- first_name: Vadim
full_name: Kaloshin, Vadim
id: FE553552-CDE8-11E9-B324-C0EBE5697425
last_name: Kaloshin
orcid: 0000-0002-6051-2628
- first_name: Maria
full_name: Saprykina, Maria
last_name: Saprykina
citation:
ama: Kaloshin V, Saprykina M. Generic 3-dimensional volume-preserving diffeomorphisms
with superexponential growth of number of periodic orbits. Discrete & Continuous
Dynamical Systems - A. 2006;15(2):611-640. doi:10.3934/dcds.2006.15.611
apa: Kaloshin, V., & Saprykina, M. (2006). Generic 3-dimensional volume-preserving
diffeomorphisms with superexponential growth of number of periodic orbits. Discrete
& Continuous Dynamical Systems - A. American Institute of Mathematical
Sciences (AIMS). https://doi.org/10.3934/dcds.2006.15.611
chicago: Kaloshin, Vadim, and Maria Saprykina. “Generic 3-Dimensional Volume-Preserving
Diffeomorphisms with Superexponential Growth of Number of Periodic Orbits.” Discrete
& Continuous Dynamical Systems - A. American Institute of Mathematical
Sciences (AIMS), 2006. https://doi.org/10.3934/dcds.2006.15.611.
ieee: V. Kaloshin and M. Saprykina, “Generic 3-dimensional volume-preserving diffeomorphisms
with superexponential growth of number of periodic orbits,” Discrete &
Continuous Dynamical Systems - A, vol. 15, no. 2. American Institute of Mathematical
Sciences (AIMS), pp. 611–640, 2006.
ista: Kaloshin V, Saprykina M. 2006. Generic 3-dimensional volume-preserving diffeomorphisms
with superexponential growth of number of periodic orbits. Discrete & Continuous
Dynamical Systems - A. 15(2), 611–640.
mla: Kaloshin, Vadim, and Maria Saprykina. “Generic 3-Dimensional Volume-Preserving
Diffeomorphisms with Superexponential Growth of Number of Periodic Orbits.” Discrete
& Continuous Dynamical Systems - A, vol. 15, no. 2, American Institute
of Mathematical Sciences (AIMS), 2006, pp. 611–40, doi:10.3934/dcds.2006.15.611.
short: V. Kaloshin, M. Saprykina, Discrete & Continuous Dynamical Systems -
A 15 (2006) 611–640.
date_created: 2020-09-18T10:48:43Z
date_published: 2006-05-01T00:00:00Z
date_updated: 2021-01-12T08:19:48Z
day: '01'
doi: 10.3934/dcds.2006.15.611
extern: '1'
intvolume: ' 15'
issue: '2'
language:
- iso: eng
month: '05'
oa_version: None
page: 611-640
publication: Discrete & Continuous Dynamical Systems - A
publication_identifier:
issn:
- 1553-5231
publication_status: published
publisher: American Institute of Mathematical Sciences (AIMS)
quality_controlled: '1'
status: public
title: Generic 3-dimensional volume-preserving diffeomorphisms with superexponential
growth of number of periodic orbits
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 15
year: '2006'
...
---
_id: '869'
abstract:
- lang: eng
text: The impact of synonymous nucleotide substitutions on fitness in mammals remains
controversial. Despite some indications of selective constraint, synonymous sites
are often assumed to be neutral, and the rate of their evolution is used as a
proxy for mutation rate. We subdivide all sites into four classes in terms of
the mutable CpG context, nonCpG, postC, preG, and postCpreG, and compare four-fold
synonymous sites and intron sites residing outside transposable elements. The
distribution of the rate of evolution across all synonymous sites is trimodal.
Rate of evolution at nonCpG synonymous sites, not preceded by C and not followed
by G, is ∼10% below that at such intron sites. In contrast, rate of evolution
at postCpreG synonymous sites is ∼30% above that at such intron sites. Finally,
synonymous and intron postC and preG sites evolve at similar rates. The relationship
between the levels of polymorphism at the corresponding synonymous and intron
sites is very similar to that between their rates of evolution. Within every class,
synonymous sites are occupied by G or C much more often than intron sites, whose
nucleotide composition is consistent with neutral mutation-drift equilibrium.
These patterns suggest that synonymous sites are under weak selection in favor
of G and C, with the average coefficient s∼0.25/Ne∼10-5, where Ne is the effective
population size. Such selection decelerates evolution and reduces variability
at sites with symmetric mutation, but has the opposite effects at sites where
the favored nucleotides are more mutable. The amino-acid composition of proteins
dictates that many synonymous sites are CpGprone, which causes them, on average,
to evolve faster and to be more polymorphic than intron sites. An average genotype
carries ∼107 suboptimal nucleotides at synonymous sites, implying synergistic
epistasis in selection against them.
acknowledgement: This research was supported in part by the Intramural Research Program
of the NIH, National Library of Medicine.
author:
- first_name: Fyodor
full_name: Fyodor Kondrashov
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
- first_name: Aleksey
full_name: Ogurtsov, Aleksey Yu
last_name: Ogurtsov
- first_name: Alexey
full_name: Kondrashov, Alexey S
last_name: Kondrashov
citation:
ama: Kondrashov F, Ogurtsov A, Kondrashov A. Selection in favor of nucleotides G
and C diversifies evolution rates and levels of polymorphism at mammalian synonymous
sites. Journal of Theoretical Biology. 2006;240(4):616-626. doi:10.1016/j.jtbi.2005.10.020
apa: Kondrashov, F., Ogurtsov, A., & Kondrashov, A. (2006). Selection in favor
of nucleotides G and C diversifies evolution rates and levels of polymorphism
at mammalian synonymous sites. Journal of Theoretical Biology. Elsevier.
https://doi.org/10.1016/j.jtbi.2005.10.020
chicago: Kondrashov, Fyodor, Aleksey Ogurtsov, and Alexey Kondrashov. “Selection
in Favor of Nucleotides G and C Diversifies Evolution Rates and Levels of Polymorphism
at Mammalian Synonymous Sites.” Journal of Theoretical Biology. Elsevier,
2006. https://doi.org/10.1016/j.jtbi.2005.10.020.
ieee: F. Kondrashov, A. Ogurtsov, and A. Kondrashov, “Selection in favor of nucleotides
G and C diversifies evolution rates and levels of polymorphism at mammalian synonymous
sites,” Journal of Theoretical Biology, vol. 240, no. 4. Elsevier, pp.
616–626, 2006.
ista: Kondrashov F, Ogurtsov A, Kondrashov A. 2006. Selection in favor of nucleotides
G and C diversifies evolution rates and levels of polymorphism at mammalian synonymous
sites. Journal of Theoretical Biology. 240(4), 616–626.
mla: Kondrashov, Fyodor, et al. “Selection in Favor of Nucleotides G and C Diversifies
Evolution Rates and Levels of Polymorphism at Mammalian Synonymous Sites.” Journal
of Theoretical Biology, vol. 240, no. 4, Elsevier, 2006, pp. 616–26, doi:10.1016/j.jtbi.2005.10.020.
short: F. Kondrashov, A. Ogurtsov, A. Kondrashov, Journal of Theoretical Biology
240 (2006) 616–626.
date_created: 2018-12-11T11:48:56Z
date_published: 2006-06-21T00:00:00Z
date_updated: 2021-01-12T08:20:33Z
day: '21'
doi: 10.1016/j.jtbi.2005.10.020
extern: 1
intvolume: ' 240'
issue: '4'
month: '06'
page: 616 - 626
publication: Journal of Theoretical Biology
publication_status: published
publisher: Elsevier
publist_id: '6779'
quality_controlled: 0
status: public
title: Selection in favor of nucleotides G and C diversifies evolution rates and levels
of polymorphism at mammalian synonymous sites
type: journal_article
volume: 240
year: '2006'
...
---
_id: '903'
abstract:
- lang: eng
text: 'Background: Carcinogenesis typically involves multiple somatic mutations
in caretaker (DNA repair) and gatekeeper (tumor suppressors and oncogenes) genes.
Analysis of mutation spectra of the tumor suppressor that is most commonly mutated
in human cancers, p53, unexpectedly suggested that somatic evolution of the p53
gene during tumorigenesis is dominated by positive selection for gain of function.
This conclusion is supported by accumulating experimental evidence of evolution
of new functions of p53 in tumors. These findings prompted a genome-wide analysis
of possible positive selection during tumor evolution. Methods: A comprehensive
analysis of probable somatic mutations in the sequences of Expressed Sequence
Tags (ESTs) from malignant tumors and normal tissues was performed in order to
access the prevalence of positive selection in cancer evolution. For each EST,
the numbers of synonymous and non-synonymous substitutions were calculated. In
order to identify genes with a signature of positive selection in cancers, these
numbers were compared to: i) expected numbers and ii) the numbers for the respective
genes in the ESTs from normal tissues. Results: We identified 112 genes with a
signature of positive selection in cancers, i.e., a significantly elevated ratio
of non-synonymous to synonymous substitutions, in tumors as compared to 37 such
genes in an approximately equal-sized EST collection from normal tissues. A substantial
fraction of the tumor-specific positive-selection candidates have experimentally
demonstrated or strongly predicted links to cancer. Conclusion: The results of
EST analysis should be interpreted with extreme caution given the noise introduced
by sequencing errors and undetected polymorphisms. Furthermore, an inherent limitation
of EST analysis is that multiple mutations amenable to statistical analysis can
be detected only in relatively highly expressed genes. Nevertheless, the present
results suggest that positive selection might affect a substantial number of genes
during tumorigenic somatic evolution.'
acknowledgement: This work was supported by the Intramural Research Program of the
National Library of Medicine at the National Institutes of Health/DHHS. FAK is an
NSF Graduate Fellow. We thank Yuri Pavlov for helpful discussions.
author:
- first_name: Vladimir
full_name: Babenko, Vladimir N
last_name: Babenko
- first_name: Malay
full_name: Basu, Malay K
last_name: Basu
- first_name: Fyodor
full_name: Fyodor Kondrashov
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
- first_name: Igor
full_name: Rogozin, Igor B
last_name: Rogozin
- first_name: Eugene
full_name: Koonin, Eugene V
last_name: Koonin
citation:
ama: Babenko V, Basu M, Kondrashov F, Rogozin I, Koonin E. Signs of positive selection
of somatic mutations in human cancers detected by EST sequence analysis. BMC
Cancer. 2006;6. doi:10.1186/1471-2407-6-36
apa: Babenko, V., Basu, M., Kondrashov, F., Rogozin, I., & Koonin, E. (2006).
Signs of positive selection of somatic mutations in human cancers detected by
EST sequence analysis. BMC Cancer. BioMed Central. https://doi.org/10.1186/1471-2407-6-36
chicago: Babenko, Vladimir, Malay Basu, Fyodor Kondrashov, Igor Rogozin, and Eugene
Koonin. “Signs of Positive Selection of Somatic Mutations in Human Cancers Detected
by EST Sequence Analysis.” BMC Cancer. BioMed Central, 2006. https://doi.org/10.1186/1471-2407-6-36.
ieee: V. Babenko, M. Basu, F. Kondrashov, I. Rogozin, and E. Koonin, “Signs of positive
selection of somatic mutations in human cancers detected by EST sequence analysis,”
BMC Cancer, vol. 6. BioMed Central, 2006.
ista: Babenko V, Basu M, Kondrashov F, Rogozin I, Koonin E. 2006. Signs of positive
selection of somatic mutations in human cancers detected by EST sequence analysis.
BMC Cancer. 6.
mla: Babenko, Vladimir, et al. “Signs of Positive Selection of Somatic Mutations
in Human Cancers Detected by EST Sequence Analysis.” BMC Cancer, vol. 6,
BioMed Central, 2006, doi:10.1186/1471-2407-6-36.
short: V. Babenko, M. Basu, F. Kondrashov, I. Rogozin, E. Koonin, BMC Cancer 6 (2006).
date_created: 2018-12-11T11:49:07Z
date_published: 2006-02-09T00:00:00Z
date_updated: 2021-01-12T08:21:47Z
day: '09'
doi: 10.1186/1471-2407-6-36
extern: 1
intvolume: ' 6'
month: '02'
publication: BMC Cancer
publication_status: published
publisher: BioMed Central
publist_id: '6744'
quality_controlled: 0
status: public
title: Signs of positive selection of somatic mutations in human cancers detected
by EST sequence analysis
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
volume: 6
year: '2006'
...
---
_id: '9505'
abstract:
- lang: eng
text: 'Cytosine methylation, a common form of DNA modification that antagonizes
transcription, is found at transposons and repeats in vertebrates, plants and
fungi. Here we have mapped DNA methylation in the entire Arabidopsis thaliana
genome at high resolution. DNA methylation covers transposons and is present within
a large fraction of A. thaliana genes. Methylation within genes is conspicuously
biased away from gene ends, suggesting a dependence on RNA polymerase transit.
Genic methylation is strongly influenced by transcription: moderately transcribed
genes are most likely to be methylated, whereas genes at either extreme are least
likely. In turn, transcription is influenced by methylation: short methylated
genes are poorly expressed, and loss of methylation in the body of a gene leads
to enhanced transcription. Our results indicate that genic transcription and DNA
methylation are closely interwoven processes.'
article_processing_charge: No
article_type: original
author:
- first_name: Daniel
full_name: Zilberman, Daniel
id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1
last_name: Zilberman
orcid: 0000-0002-0123-8649
- first_name: Mary
full_name: Gehring, Mary
last_name: Gehring
- first_name: Robert K.
full_name: Tran, Robert K.
last_name: Tran
- first_name: Tracy
full_name: Ballinger, Tracy
last_name: Ballinger
- first_name: Steven
full_name: Henikoff, Steven
last_name: Henikoff
citation:
ama: Zilberman D, Gehring M, Tran RK, Ballinger T, Henikoff S. Genome-wide analysis
of Arabidopsis thaliana DNA methylation uncovers an interdependence between methylation
and transcription. Nature Genetics. 2006;39(1):61-69. doi:10.1038/ng1929
apa: Zilberman, D., Gehring, M., Tran, R. K., Ballinger, T., & Henikoff, S.
(2006). Genome-wide analysis of Arabidopsis thaliana DNA methylation uncovers
an interdependence between methylation and transcription. Nature Genetics.
Nature Publishing Group. https://doi.org/10.1038/ng1929
chicago: Zilberman, Daniel, Mary Gehring, Robert K. Tran, Tracy Ballinger, and Steven
Henikoff. “Genome-Wide Analysis of Arabidopsis Thaliana DNA Methylation Uncovers
an Interdependence between Methylation and Transcription.” Nature Genetics.
Nature Publishing Group, 2006. https://doi.org/10.1038/ng1929.
ieee: D. Zilberman, M. Gehring, R. K. Tran, T. Ballinger, and S. Henikoff, “Genome-wide
analysis of Arabidopsis thaliana DNA methylation uncovers an interdependence between
methylation and transcription,” Nature Genetics, vol. 39, no. 1. Nature
Publishing Group, pp. 61–69, 2006.
ista: Zilberman D, Gehring M, Tran RK, Ballinger T, Henikoff S. 2006. Genome-wide
analysis of Arabidopsis thaliana DNA methylation uncovers an interdependence between
methylation and transcription. Nature Genetics. 39(1), 61–69.
mla: Zilberman, Daniel, et al. “Genome-Wide Analysis of Arabidopsis Thaliana DNA
Methylation Uncovers an Interdependence between Methylation and Transcription.”
Nature Genetics, vol. 39, no. 1, Nature Publishing Group, 2006, pp. 61–69,
doi:10.1038/ng1929.
short: D. Zilberman, M. Gehring, R.K. Tran, T. Ballinger, S. Henikoff, Nature Genetics
39 (2006) 61–69.
date_created: 2021-06-07T12:19:31Z
date_published: 2006-11-26T00:00:00Z
date_updated: 2021-12-14T09:02:51Z
day: '26'
department:
- _id: DaZi
doi: 10.1038/ng1929
extern: '1'
external_id:
pmid:
- '17128275'
intvolume: ' 39'
issue: '1'
language:
- iso: eng
month: '11'
oa_version: None
page: 61-69
pmid: 1
publication: Nature Genetics
publication_identifier:
eissn:
- 1546-1718
issn:
- 1061-4036
publication_status: published
publisher: Nature Publishing Group
quality_controlled: '1'
scopus_import: '1'
status: public
title: Genome-wide analysis of Arabidopsis thaliana DNA methylation uncovers an interdependence
between methylation and transcription
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 39
year: '2006'
...
---
_id: '13430'
abstract:
- lang: eng
text: Dynamic self-assembly (DySA) processes occurring outside of thermodynamic
equilibrium underlie many forms of adaptive and intellligent behaviors in natural
systems. Relatively little, however, is known about the principles that govern
DySA and the ways in which it can be extended to artificial ensembles. This article
discusses recent advances in both the theory and the practice of nonequilibrium
self-assembly. It is argued that a union of ideas from thermodynamics and dynamic
systems' theory can provide a general description of DySA. In parallel, heuristic
design rules can be used to construct DySA systems of increasing complexities
based on a variety of suitable interactions/potentials on length scales from nanoscopic
to macroscopic. Applications of these rules to magnetohydrodynamic DySA are also
discussed.
article_processing_charge: No
article_type: original
author:
- first_name: Marcin
full_name: Fialkowski, Marcin
last_name: Fialkowski
- first_name: Kyle J. M.
full_name: Bishop, Kyle J. M.
last_name: Bishop
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
- first_name: Stoyan K.
full_name: Smoukov, Stoyan K.
last_name: Smoukov
- first_name: Christopher J.
full_name: Campbell, Christopher J.
last_name: Campbell
- first_name: Bartosz A.
full_name: Grzybowski, Bartosz A.
last_name: Grzybowski
citation:
ama: Fialkowski M, Bishop KJM, Klajn R, Smoukov SK, Campbell CJ, Grzybowski BA.
Principles and implementations of dissipative (dynamic) self-assembly. The
Journal of Physical Chemistry B. 2006;110(6):2482-2496. doi:10.1021/jp054153q
apa: Fialkowski, M., Bishop, K. J. M., Klajn, R., Smoukov, S. K., Campbell, C. J.,
& Grzybowski, B. A. (2006). Principles and implementations of dissipative
(dynamic) self-assembly. The Journal of Physical Chemistry B. American
Chemical Society. https://doi.org/10.1021/jp054153q
chicago: Fialkowski, Marcin, Kyle J. M. Bishop, Rafal Klajn, Stoyan K. Smoukov,
Christopher J. Campbell, and Bartosz A. Grzybowski. “Principles and Implementations
of Dissipative (Dynamic) Self-Assembly.” The Journal of Physical Chemistry
B. American Chemical Society, 2006. https://doi.org/10.1021/jp054153q.
ieee: M. Fialkowski, K. J. M. Bishop, R. Klajn, S. K. Smoukov, C. J. Campbell, and
B. A. Grzybowski, “Principles and implementations of dissipative (dynamic) self-assembly,”
The Journal of Physical Chemistry B, vol. 110, no. 6. American Chemical
Society, pp. 2482–2496, 2006.
ista: Fialkowski M, Bishop KJM, Klajn R, Smoukov SK, Campbell CJ, Grzybowski BA.
2006. Principles and implementations of dissipative (dynamic) self-assembly. The
Journal of Physical Chemistry B. 110(6), 2482–2496.
mla: Fialkowski, Marcin, et al. “Principles and Implementations of Dissipative (Dynamic)
Self-Assembly.” The Journal of Physical Chemistry B, vol. 110, no. 6, American
Chemical Society, 2006, pp. 2482–96, doi:10.1021/jp054153q.
short: M. Fialkowski, K.J.M. Bishop, R. Klajn, S.K. Smoukov, C.J. Campbell, B.A.
Grzybowski, The Journal of Physical Chemistry B 110 (2006) 2482–2496.
date_created: 2023-08-01T10:37:35Z
date_published: 2006-01-25T00:00:00Z
date_updated: 2023-08-08T11:33:08Z
day: '25'
doi: 10.1021/jp054153q
extern: '1'
external_id:
pmid:
- '16471845'
intvolume: ' 110'
issue: '6'
keyword:
- Materials Chemistry
- Surfaces
- Coatings and Films
- Physical and Theoretical Chemistry
language:
- iso: eng
month: '01'
oa_version: None
page: 2482-2496
pmid: 1
publication: The Journal of Physical Chemistry B
publication_identifier:
issn:
- 1520-6106
- 1520-5207
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Principles and implementations of dissipative (dynamic) self-assembly
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 110
year: '2006'
...
---
_id: '13428'
abstract:
- lang: eng
text: Mixtures of oppositely charged nanoparticles of various sizes and charge ratios
precipitate only at the point of electroneutrality. This phenomenonspecific to
the nanoscale and reminiscent of threshold precipitation of ionsis a consequence
of the formation of core-and-shell nanoparticle aggregates, in which the shells
are composed of like-charged particles and are stabilized by efficient electrostatic
screening.
article_processing_charge: No
article_type: original
author:
- first_name: Alexander M.
full_name: Kalsin, Alexander M.
last_name: Kalsin
- first_name: Bartlomiej
full_name: Kowalczyk, Bartlomiej
last_name: Kowalczyk
- first_name: Stoyan K.
full_name: Smoukov, Stoyan K.
last_name: Smoukov
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
- first_name: Bartosz A.
full_name: Grzybowski, Bartosz A.
last_name: Grzybowski
citation:
ama: Kalsin AM, Kowalczyk B, Smoukov SK, Klajn R, Grzybowski BA. Ionic-like behavior
of oppositely charged nanoparticles. Journal of the American Chemical Society.
2006;128(47):15046-15047. doi:10.1021/ja0642966
apa: Kalsin, A. M., Kowalczyk, B., Smoukov, S. K., Klajn, R., & Grzybowski,
B. A. (2006). Ionic-like behavior of oppositely charged nanoparticles. Journal
of the American Chemical Society. American Chemical Society. https://doi.org/10.1021/ja0642966
chicago: Kalsin, Alexander M., Bartlomiej Kowalczyk, Stoyan K. Smoukov, Rafal Klajn,
and Bartosz A. Grzybowski. “Ionic-like Behavior of Oppositely Charged Nanoparticles.”
Journal of the American Chemical Society. American Chemical Society, 2006.
https://doi.org/10.1021/ja0642966.
ieee: A. M. Kalsin, B. Kowalczyk, S. K. Smoukov, R. Klajn, and B. A. Grzybowski,
“Ionic-like behavior of oppositely charged nanoparticles,” Journal of the American
Chemical Society, vol. 128, no. 47. American Chemical Society, pp. 15046–15047,
2006.
ista: Kalsin AM, Kowalczyk B, Smoukov SK, Klajn R, Grzybowski BA. 2006. Ionic-like
behavior of oppositely charged nanoparticles. Journal of the American Chemical
Society. 128(47), 15046–15047.
mla: Kalsin, Alexander M., et al. “Ionic-like Behavior of Oppositely Charged Nanoparticles.”
Journal of the American Chemical Society, vol. 128, no. 47, American Chemical
Society, 2006, pp. 15046–47, doi:10.1021/ja0642966.
short: A.M. Kalsin, B. Kowalczyk, S.K. Smoukov, R. Klajn, B.A. Grzybowski, Journal
of the American Chemical Society 128 (2006) 15046–15047.
date_created: 2023-08-01T10:36:27Z
date_published: 2006-11-29T00:00:00Z
date_updated: 2023-08-08T11:30:06Z
day: '29'
doi: 10.1021/ja0642966
extern: '1'
external_id:
pmid:
- '17117829'
intvolume: ' 128'
issue: '47'
keyword:
- Colloid and Surface Chemistry
- Biochemistry
- General Chemistry
- Catalysis
language:
- iso: eng
month: '11'
oa_version: None
page: 15046-15047
pmid: 1
publication: Journal of the American Chemical Society
publication_identifier:
eissn:
- 1520-5126
issn:
- 0002-7863
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Ionic-like behavior of oppositely charged nanoparticles
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 128
year: '2006'
...
---
_id: '13429'
abstract:
- lang: eng
text: 'The fruitful core: Organic syntheses reported in the literature from 1850
to 2004 are analyzed with mathematical tools from network theory and statistical
physics. There is a set of substances (the core) from which the majority of other
organic compounds can be made (see picture; red: core, blue: periphery, green:
islands). Search algorithms are used to identify small optimal sets of maximally
useful chemicals.'
article_processing_charge: No
article_type: original
author:
- first_name: Kyle J. M.
full_name: Bishop, Kyle J. M.
last_name: Bishop
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
- first_name: Bartosz A.
full_name: Grzybowski, Bartosz A.
last_name: Grzybowski
citation:
ama: Bishop KJM, Klajn R, Grzybowski BA. The core and most useful molecules in organic
chemistry. Angewandte Chemie International Edition. 2006;45(32):5348-5354.
doi:10.1002/anie.200600881
apa: Bishop, K. J. M., Klajn, R., & Grzybowski, B. A. (2006). The core and most
useful molecules in organic chemistry. Angewandte Chemie International Edition.
Wiley. https://doi.org/10.1002/anie.200600881
chicago: Bishop, Kyle J. M., Rafal Klajn, and Bartosz A. Grzybowski. “The Core and
Most Useful Molecules in Organic Chemistry.” Angewandte Chemie International
Edition. Wiley, 2006. https://doi.org/10.1002/anie.200600881.
ieee: K. J. M. Bishop, R. Klajn, and B. A. Grzybowski, “The core and most useful
molecules in organic chemistry,” Angewandte Chemie International Edition,
vol. 45, no. 32. Wiley, pp. 5348–5354, 2006.
ista: Bishop KJM, Klajn R, Grzybowski BA. 2006. The core and most useful molecules
in organic chemistry. Angewandte Chemie International Edition. 45(32), 5348–5354.
mla: Bishop, Kyle J. M., et al. “The Core and Most Useful Molecules in Organic Chemistry.”
Angewandte Chemie International Edition, vol. 45, no. 32, Wiley, 2006,
pp. 5348–54, doi:10.1002/anie.200600881.
short: K.J.M. Bishop, R. Klajn, B.A. Grzybowski, Angewandte Chemie International
Edition 45 (2006) 5348–5354.
date_created: 2023-08-01T10:37:16Z
date_published: 2006-08-11T00:00:00Z
date_updated: 2023-08-08T11:31:27Z
day: '11'
doi: 10.1002/anie.200600881
extern: '1'
external_id:
pmid:
- '16835857'
intvolume: ' 45'
issue: '32'
keyword:
- General Chemistry
- Catalysis
language:
- iso: eng
month: '08'
oa_version: None
page: 5348-5354
pmid: 1
publication: Angewandte Chemie International Edition
publication_identifier:
eissn:
- 1521-3773
issn:
- 1433-7851
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: The core and most useful molecules in organic chemistry
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 45
year: '2006'
...