Institution
University of Graz
Education•Graz, Steiermark, Austria•
About: University of Graz is a education organization based out in Graz, Steiermark, Austria. It is known for research contribution in the topics: Population & Quantum chromodynamics. The organization has 17934 authors who have published 37489 publications receiving 1110980 citations. The organization is also known as: Carolo Franciscea Graecensis & Karl Franzens Universität.
Papers published on a yearly basis
Papers
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TL;DR: This work introduces the new concept of total generalized variation for magnetic resonance imaging, a new mathematical framework, which is a generalization of the total variation theory and which eliminates these restrictions.
Abstract: Total variation was recently introduced in many different magnetic resonance imaging applications. The assumption of total variation is that images consist of areas, which are piecewise constant. However, in many practical magnetic resonance imaging situations, this assumption is not valid due to the inhomogeneities of the exciting B1 field and the receive coils. This work introduces the new concept of total generalized variation for magnetic resonance imaging, a new mathematical framework, which is a generalization of the total variation theory and which eliminates these restrictions. Two important applications are considered in this article, image denoising and image reconstruction from undersampled radial data sets with multiple coils. Apart from simulations, experimental results from in vivo measurements are presented where total generalized variation yielded improved image quality over conventional total variation in all cases.
557 citations
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TL;DR: In this paper, the authors used Kratky slit collimation to measure the absolute intensity of small-angle scattering, of X-rays (SAXS) and neutrons (SANS), which is the ratio of the scattering intensity to the primary intensity.
Abstract: For small-angle scattering, of X-rays (SAXS) and neutrons (SANS), the importance of absolute calibration has been recognized since the inception of the technique. The work reported here focuses on SAXS measurements using Kratky slit systems. In former days, only molecular weights or scattering per particle were determined, but today absolute calibration implies the use of the unit of cm−1 for the scattering curve. It is necessary to measure the so-called absolute intensity, which is the ratio of the scattering intensity to the primary intensity P0. Basically there are two possible ways to determine the absolute intensity. The first one is the direct method, which involves the mechanical attenuation of the primary beam by a rotating disc or a moving slit. The second is the indirect method, using secondary standards. Water is well suited as a calibration standard because of the angle-independent scattering. The essential advantage is that the scattering of water only depends on the physical property of isothermal compressibility. Before presenting an example of the practical performance of this method, the most important theoretical equations for an SAS experiment on the absolute scale are summarized. With the slit collimation system, the scattering curve of water can be measured with high enough statistical accuracy. As a first example, the scattering curve of the protein lysozyme on the absolute scale is presented. The second example is the determination of the aggregation number of a triblock copolymer P94 (EO17–PO42–EO17). Taking into account that at least 10% of the polymer sample consists of diblocks, the accuracy of around 10% for the determined aggregation number is rather good. The data of P94 are also considered on the particle scale in order to obtain the radial scattering-length density distribution.
556 citations
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TL;DR: SPTL-ABs without associated HPS have an excellent prognosis, and multiagent chemotherapy as first choice of treatment should be questioned, while SPTL-GDs often showed (epi)dermal involvement and/or ulceration, a CD4-, CD8-, CD56+/-, betaF1- T-cell phenotype, and poor prognosis (5-year OS: 11%), irrespective of the presence of HPS or type of treatment.
555 citations
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University of Graz1, Oklahoma State University–Stillwater2, King Abdulaziz University3, University of Adelaide4, United Arab Emirates University5, University of Asmara6, China University of Geosciences (Wuhan)7, Ministry of Energy and Minerals8, University of Texas at Dallas9, Norwegian University of Science and Technology10
TL;DR: A first phase of ocean closure and accretion of terranes defines the East African Orogeny, which mainly affected the southern parts of east Africa and Madagascar, and was followed by extension phases that were accompanied by emplacement of late- to post-tectonic granitoids.
548 citations
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TL;DR: The highest resistance rates were found in E. coli strains of a sewage treatment plant which treats not only municipal sewage but also sewage from a hospital, and thus sewage treatment processes contribute to the dissemination of resistant bacteria in the environment.
546 citations
Authors
Showing all 18136 results
Name | H-index | Papers | Citations |
---|---|---|---|
David Haussler | 172 | 488 | 224960 |
Russel J. Reiter | 169 | 1646 | 121010 |
Frederik Barkhof | 154 | 1449 | 104982 |
Philip Scheltens | 140 | 1175 | 107312 |
Christopher D.M. Fletcher | 138 | 674 | 82484 |
Jennifer S. Haas | 128 | 840 | 71315 |
Jelena Krstic | 126 | 839 | 73457 |
Michael A. Kamm | 124 | 637 | 53606 |
Frances H. Arnold | 119 | 510 | 49651 |
Gert Pfurtscheller | 117 | 507 | 62873 |
Georg Kresse | 111 | 430 | 244729 |
Manfred T. Reetz | 110 | 959 | 42941 |
Alois Fürstner | 108 | 459 | 43085 |
David N. Herndon | 108 | 1227 | 54888 |
David J. Williams | 107 | 2060 | 62440 |