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Institution

University of Konstanz

EducationKonstanz, Baden-Württemberg, Germany
About: University of Konstanz is a education organization based out in Konstanz, Baden-Württemberg, Germany. It is known for research contribution in the topics: Population & Visualization. The organization has 12115 authors who have published 27401 publications receiving 951162 citations. The organization is also known as: University of Constance & Universität Konstanz.


Papers
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Journal ArticleDOI
TL;DR: The surprising variation in the number of Hox clusters and the genomic architecture within vertebrate lineages, especially within the ray-finned fish, reflects a history of duplications and subsequent lineage-specific gene loss.

195 citations

Journal ArticleDOI
TL;DR: In two experiments using an injustice paradigm or a categorization task, critical situations (specified in the if-component) were subliminally presented and it was tested whether these situations influenced the preparation and initiation of the planned goal-directed behavior as discussed by the authors.
Abstract: Forming implementation intentions (“If I encounter cue X, then I will perform behavior Y!”) is postulated to trigger action initiation without further conscious intent once the specified cue is encountered (Gollwitzer, 1999). In two experiments using an injustice paradigm or a categorization task, critical situations (specified in the if-component) were subliminally presented and it was tested whether these situations influenced the preparation (Study 1) and initiation (Study 2) of the planned goal-directed behavior (specified in the then-component). After the subliminal presentation of the critical situations, implementation intention participants showed stronger action preparation and a faster action initiation, as compared to control participants (Study 1) who had not formed any goal intention at all, and compared to participants (Studies 1 and 2) who had only formed goal intentions. These findings suggest that forming implementation intentions leads to automatic action initiation without further consc...

194 citations

Journal ArticleDOI
TL;DR: The authors' simulations suggest that the combined effect of disorder and Coulomb interaction provides a new mechanism for under-standing non-Debye relaxation, which is experimentally known for a wide class of materials.
Abstract: We perform Monte Carlo simulations for diffusion of charged particles in structurally disorderd lattices. As a consequence of the Coulomb interaction, pronounced backward correlations occur which lead to power-law behavior of the relevant transport quantities at intermediate time and frequency scales. Both the exponents and the size of the dispersive regime depend on temperature. Our simulations suggest that the combined effect of disorder and Coulomb interaction provides a new mechanism for understanding non-Debye relaxation, which is experimentally known for a wide class of materials.

194 citations

Journal ArticleDOI
TL;DR: In this article, a combined analytical and numerical study of the early stages (sub-100-fs) of the nonequilibrium dynamics of photoexcited electrons in graphene is presented, with a collision integral that includes contributions from electron-electron (e-e) and electron-optical phonon interactions.
Abstract: We present a combined analytical and numerical study of the early stages (sub-100-fs) of the nonequilibrium dynamics of photoexcited electrons in graphene. We employ the semiclassical Boltzmann equation with a collision integral that includes contributions from electron-electron (e-e) and electron–optical phonon interactions. Taking advantage of circular symmetry and employing the massless Dirac fermion (MDF) Hamiltonian, we are able to perform an essentially analytical study of the e-e contribution to the collision integral. This allows us to take particular care of subtle collinear scattering processes—processes in which incoming and outgoing momenta of the scattering particles lie on the same line—including carrier multiplication (CM) and Auger recombination (AR). These processes have a vanishing phase space for two-dimensional MDF bare bands. However, we argue that electron-lifetime effects, seen in experiments based on angle-resolved photoemission spectroscopy, provide a natural pathway to regularize this pathology, yielding a finite contribution due to CM and AR to the Coulomb collision integral. Finally, we discuss in detail the role of physics beyond the Fermi golden rule by including screening in the matrix element of the Coulomb interaction at the level of the random phase approximation (RPA), focusing in particular on the consequences of various approximations including static RPA screening, which maximizes the impact of CM and AR processes, and dynamical RPA screening, which completely suppresses them.

194 citations

Journal ArticleDOI
TL;DR: In this paper, the authors found that exposure of dry oxic paddy sol to submerged anoxic conditions resulted in a decrease of the soil redox potential and initiation of CH4 production, but the most probable numbers (MPN) of hydrogenotrophic and acetotrophic methanogens did not change upon flooding the soil, and stayed constant at 105−106 and 104−105 g−1 d.w.
Abstract: Exposure of dry oxic paddy sol to submerged anoxic conditions resulted in a decrease of the soil redox potential and initiation of CH4 production. However, the most probable numbers (MPN) of hydrogenotrophic and acetotrophic methanogens did not change upon flooding the soil and upon initiation of CH4 production, and stayed constant at 105−106 and 104−105 g−1 d.w. soil, respectively. Cells of Methanobacterium strain Bab1 added to anoxic soil suspensions mostly survived drying and storage under an air atmosphere. Initiation of CH4 production was not affected by storage of dry soil under N2, air, or O2 atmosphere. However, it was negatively affected by storage under the air at high negatively affected by storage under air at high relative humidities, under moist conditions, or by using only the small (< 100 μ m) soil particle fraction. All these treatments also resulted in decreased contents of dissolved organic carbon (DOC). The soil's capacity for initiation of CH4 production could be regenerated either by addition of glucose or by exposure to H2 and addition of reducing agents. The establishment of decreased redox potentials and the provision of methanogenic substrates by heterotrophic bacteria, but not the number of methanogenic bacteria, seemed to be the essential factors for initiation of CH4 production after submergence of oxic paddy soil. CH4 production could also be initiated in forest and arable soils. Here, however, the population of methanogenic bacteria (MPN) increased from about 103 to 105−106 g−1 d.w. when methanogenesis started.

194 citations


Authors

Showing all 12272 results

NameH-indexPapersCitations
Robert E. W. Hancock15277588481
Lloyd J. Old152775101377
Andrew White1491494113874
Stefanie Dimmeler14757481658
Rudolf Amann14345985525
Niels Birbaumer14283577853
Thomas P. Russell141101280055
Emmanuelle Perez138155099016
Shlomo Havlin131101383347
Bruno S. Frey11990065368
Roald Hoffmann11687059470
Michael G. Fehlings116118957003
Yves Van de Peer11549461479
Axel Meyer11251151195
Manuela Campanelli11167548563
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202360
2022202
20211,361
20201,299
20191,166
20181,082