Institution
Bielefeld University
Education•Bielefeld, Nordrhein-Westfalen, Germany•
About: Bielefeld University is a education organization based out in Bielefeld, Nordrhein-Westfalen, Germany. It is known for research contribution in the topics: Population & Quantum chromodynamics. The organization has 10123 authors who have published 26576 publications receiving 728250 citations. The organization is also known as: University of Bielefeld & UNIVERSITAET BIELEFELD.
Topics: Population, Quantum chromodynamics, Gene, Context (language use), Quark
Papers published on a yearly basis
Papers
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TL;DR: A survey about the social contacts of school children in Germany was conducted and effective contact numbers were computed to take the heterogeneity in contact behaviour into account in assessing the contribution of children's contacts to the overall transmission of an infection.
Abstract: Empirical data about contact frequencies of children is needed for estimating parameters in mathematical modelling studies that investigate the effect of targeting influenza intervention to children. A survey about the social contacts of school children was conducted in a primary school in Germany. The distribution of the daily numbers of contacts was stratified by age of the contacted person and by weekday. A negative binomial regression analysis was performed to investigate factors that influence contact behaviour. Using logistic regression analysis we examined the relationship between the numbers of private contacts and having been ill in the last 6 months. We computed effective contact numbers to take the heterogeneity in contact behaviour into account in assessing the contribution of children's contacts to the overall transmission of an infection. The possible effects of intervention measures such as school closure and vaccination on the transmission of respiratory-spread agents to other age groups are discussed.
146 citations
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TL;DR: In this article, the authors identify a role for AtGRP7 as a flowering-time gene in Arabidopsis thaliana, and they show that atgrp7-1 T-DNA mutant flowers later than wild-type plants under both long and short days.
Abstract: The RNA binding protein AtGRP7 is part of a circadian slave oscillator in Arabidopsis thaliana that negatively autoregulates its own mRNA, and affects the levels of other transcripts. Here, we identify a novel role for AtGRP7 as a flowering-time gene. An atgrp7-1 T-DNA mutant flowers later than wild-type plants under both long and short days, and independent RNA interference lines with reduced levels of AtGRP7, and the closely related AtGRP8 protein, are also late flowering, particularly in short photoperiods. Consistent with the retention of a photoperiodic response, the transcript encoding the key photoperiodic regulator CONSTANS oscillates with a similar pattern in atgrp7-1 and wild-type plants. In both the RNAi lines and in the atgrp7-1 mutant transcript levels for the floral repressor FLC are elevated. Conversely, in transgenic plants ectopically overexpressing AtGRP7, the transition to flowering is accelerated mainly in short days, with a concomitant reduction in FLC abundance. The late-flowering phenotype of the RNAi lines is suppressed by introducing the flc-3 loss-of-function mutation, suggesting that AtGRP7 promotes floral transition, at least partly by downregulating FLC. Furthermore, vernalization overrides the late-flowering phenotype. Retention of both the photoperiodic response and vernalization response are features of autonomous pathway mutants, suggesting that AtGRP7 is a novel member of the autonomous pathway.
146 citations
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TL;DR: In cell-based assays, it is shown that the ADAM10 prodomain inhibits betacellulin shedding, demonstrating that it could be of potential use as a therapeutic agent to treat cancer.
145 citations
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TL;DR: In this paper, a discussion of the effects of frustration on the field of molecular magnetism is presented, and it is shown that these effects indeed lead to a variety of unusual magnetic properties.
Abstract: In magnetism, of which molecular magnetism is a part, the term frustration is used rather sloppily. Sometimes one gains the impression that if the reason for some phenomenon is not quite clear then it is attributed to frustration. In this paper a discussion of the effects of frustration that are relevant for the field of molecular magnetism is presented. As will become clear later these effects indeed lead to a variety of unusual magnetic properties.
145 citations
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TL;DR: In this paper, it was reported that transition metal complexes with phosphabenzene and phosphaferrocene ligands exhibit remarkable potential as catalysts in the hydroformylation of terminal and internal alkenes.
Abstract: Phosphabenzenes and phosphaferrocenes were among the first compounds with P-C multiple bonds. For nearly 30 years the chemistry of these molecules was essentially a domain left to basic researchers. Recently, however, it was reported that transition metal complexes with phosphabenzene and phosphaferrocene ligands exhibit remarkable potential as catalysts. Catalysts based on rhodium (i) and various phosphabenzenes appear to be superior to classical systems in the hydroformylation of terminal and internal alkenes. In addition planar-chiral phosphaferrocene species display an excellent performance as directing ligands in a series of enantioselective asymmetric syntheses.
145 citations
Authors
Showing all 10375 results
Name | H-index | Papers | Citations |
---|---|---|---|
Stefan Grimme | 113 | 680 | 105087 |
Alfred Pühler | 102 | 658 | 45871 |
James Barber | 102 | 642 | 42397 |
Swagata Mukherjee | 101 | 1048 | 46234 |
Hans-Joachim Werner | 98 | 317 | 48508 |
Krzysztof Redlich | 98 | 609 | 32693 |
Graham C. Walker | 93 | 381 | 36875 |
Christian Meyer | 93 | 1081 | 38149 |
Muhammad Farooq | 92 | 1341 | 37533 |
Jean Willy Andre Cleymans | 90 | 542 | 27685 |
Bernhard T. Baune | 90 | 608 | 50706 |
Martin Wikelski | 89 | 420 | 25821 |
Niklas Luhmann | 85 | 421 | 42743 |
Achim Müller | 85 | 926 | 35874 |
Oliver T. Wolf | 83 | 337 | 24211 |