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.
Papers published on a yearly basis
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Leiden University1, University of Edinburgh2, University of Hertfordshire3, ASTRON4, Commonwealth Scientific and Industrial Research Organisation5, Max Planck Society6, University of Sydney7, University of Hamburg8, Rhodes University9, Paris Diderot University10, Harvard University11, INAF12, Jagiellonian University13, Chalmers University of Technology14, Radboud University Nijmegen15, University of Manchester16, University of Oxford17, University of the Western Cape18, Kapteyn Astronomical Institute19, Open University20, Rutherford Appleton Laboratory21, University of Amsterdam22, Joint Institute for VLBI in Europe23, University of Orléans24, Centre national de la recherche scientifique25, Ruhr University Bochum26, University of Southampton27, University of Western Australia28, Institute of Cosmology and Gravitation, University of Portsmouth29, University of Oulu30, Tata Institute of Fundamental Research31, Bielefeld University32, Leibniz Institute for Astrophysics Potsdam33, European Southern Observatory34, University of Cape Town35
TL;DR: The LOFAR Two-metre Sky Survey (LoTSS) as mentioned in this paper is a deep 120-168 MHz imaging survey that will eventually cover the entire northern sky, where each of the 3170 pointings will be observed for 8 h, which, at most declinations, is sufficient to produce ~5? resolution images with a sensitivity of ~100?Jy/beam and accomplish the main scientific aims of the survey, which are to explore the formation and evolution of massive black holes, galaxies, clusters of galaxies and large-scale structure.
Abstract: The LOFAR Two-metre Sky Survey (LoTSS) is a deep 120-168 MHz imaging survey that will eventually cover the entire northern sky. Each of the 3170 pointings will be observed for 8 h, which, at most declinations, is sufficient to produce ~5? resolution images with a sensitivity of ~100 ?Jy/beam and accomplish the main scientific aims of the survey, which are to explore the formation and evolution of massive black holes, galaxies, clusters of galaxies and large-scale structure. Owing to the compact core and long baselines of LOFAR, the images provide excellent sensitivity to both highly extended and compact emission. For legacy value, the data are archived at high spectral and time resolution to facilitate subarcsecond imaging and spectral line studies. In this paper we provide an overview of the LoTSS. We outline the survey strategy, the observational status, the current calibration techniques, a preliminary data release, and the anticipated scientific impact. The preliminary images that we have released were created using a fully automated but direction-independent calibration strategy and are significantly more sensitive than those produced by any existing large-Area low-frequency survey. In excess of 44 000 sources are detected in the images that have a resolution of 25?, typical noise levels of less than 0.5 mJy/beam, and cover an area of over 350 square degrees in the region of the HETDEX Spring Field (right ascension 10h45m00s to 15h30m00s and declination 45°00?00? to 57°00?00?).
447 citations
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TL;DR: Results demonstrate that WWTP bacteria are a reservoir for various resistance genes, and detection of about 64 % of the 192 reference resistance genes in bacteria obtained from the WWTP's final effluents indicates that these resistance determinants might be further disseminated in habitats downstream of the sewage plant.
Abstract: To detect plasmid-borne antibiotic-resistance genes in wastewater treatment plant (WWTP) bacteria, 192 resistance-gene-specific PCR primer pairs were designed and synthesized. Subsequent PCR analyses on total plasmid DNA preparations obtained from bacteria of activated sludge or the WWTP's final effluents led to the identification of, respectively, 140 and 123 different resistance-gene-specific amplicons. The genes detected included aminoglycoside, β-lactam, chloramphenicol, fluoroquinolone, macrolide, rifampicin, tetracycline, trimethoprim and sulfonamide resistance genes as well as multidrug efflux and small multidrug resistance genes. Some of these genes were only recently described from clinical isolates, demonstrating genetic exchange between clinical and WWTP bacteria. Sequencing of selected resistance-gene-specific amplicons confirmed their identity or revealed that the amplicon nucleotide sequence is very similar to a gene closely related to the reference gene used for primer design. These results demonstrate that WWTP bacteria are a reservoir for various resistance genes. Moreover, detection of about 64 % of the 192 reference resistance genes in bacteria obtained from the WWTP's final effluents indicates that these resistance determinants might be further disseminated in habitats downstream of the sewage plant.
446 citations
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TL;DR: A DNA fragment of the broad host range plasmid RP4 carrying the cis-acting DNA recognition site for conjugative DNA transfer between bacterial cells was cloned into the kanamycin-neomycin resistance transposon Tn5, which can easily be inserted into the host DNA of gram-negative bacteria.
Abstract: A DNA fragment of the broad host range plasmid RP4 carrying the cis-acting DNA recognition site for conjugative DNA transfer between bacterial cells (Mobsite) was cloned into the kanamycin-neomycin resistance transposon Tn5. Using conventrional transposon mutagenesis techniques the new transposon, called Tn5-Mob, can easily be inserted into the host DNA of gram-negative bacteria. A host replicon carrying Tn5-Mob is then mobilizable into any other gram-negative species if the transfer functions of plasmid RP4 are provided in trans. The potential of Tn5-Mob was demonstrated by mobilizing Rhizobium meliloti plasmids as well as the E. coli chromosome at high frequencies.
445 citations
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TL;DR: The state of the art and further challenges of combustion chemistry research in laminar flames are reviewed in this paper, where various methods considered in this review are the flat, low-pressure, burner-stabilized premixed flame for chemical speciation studies, and the stagnation, spherically expanding, and burner stabilised flames for determining the global flame properties.
444 citations
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TL;DR: In this paper, the strict positivity, lower semicontinuity, convexity and monotonicity of relative entropy of von Neumann algebras are proved.
Abstract: Relative entropy of two states of a von Neumann algebra is defined in terms of the relative modular operator. The strict positivity, lower semicontinuity, convexity and monotonicity of relative entropy are proved. The Wigner-Yanase-Dyson-Lieb concavity is also proved for general von Neumann algebra.
440 citations
Authors
Showing all 10375 results
Name | H-index | Papers | Citations |
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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 |