Search Results - "Harder, N."

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    Decoupling beam power and beam energy on ASDEX Upgrade NBI with an in-situ variable extraction gap system by Hopf, C., Harder, N. den, Heinemann, B., Angioni, C., Plank, U., Weiland, M.

    Published in Nuclear fusion (01-09-2024)
    “…Abstract In early 2022 one source of ASDEX Upgrade’s (AUG) neutral beam injector 2 was equipped with a first-of-its-kind beam extraction grid system with…”
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    Journal Article
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    Influence of Image Processing on Radiomic Features From Magnetic Resonance Imaging by Wichtmann, Barbara D., Harder, Felix N., Weiss, Kilian, Schönberg, Stefan O., Attenberger, Ulrike I., Alkadhi, Hatem, Pinto dos Santos, Daniel, Baeßler, Bettina

    Published in Investigative radiology (01-03-2023)
    “…Before implementing radiomics in routine clinical practice, comprehensive knowledge about the repeatability and reproducibility of radiomic features is…”
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    Journal Article
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    Theory of analyzing free energy losses in solar cells by Brendel, R., Dreissigacker, S., Harder, N.-P., Altermatt, P. P.

    Published in Applied physics letters (27-10-2008)
    “…We make up the free energy balance for thermalized electrons and holes in a solar cell. Equations for the loss rates of free energy due to recombination and…”
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    Journal Article
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    Noise reduction in diffusion weighted MRI of the pancreas using an L1-regularized iterative SENSE reconstruction by Kamal, Omar, McTavish, Sean, Harder, Felix N., Van, Anh T., Peeters, Johannes M., Weiss, Kilian, Makowski, Marcus R., Karampinos, Dimitrios C., Braren, Rickmer F.

    Published in Magnetic resonance imaging (01-04-2022)
    “…To prospectively evaluate an L1 regularized iterative SENSE reconstruction (L1-R SENSE) to eliminate band-like artifacts frequently seen with parallel imaging…”
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    Journal Article
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    A conceptual system design study for an NBI beamline for the European DEMO by Hopf, C., Starnella, G., den Harder, N., Heinemann, B., Fantz, U.

    Published in Fusion engineering and design (01-09-2019)
    “…•The approach to a conceptual design study for DEMO NNBI beamlines is outlined.•The interdependences between the individual beamline components are…”
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    Journal Article
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    Reviewed design of the high heat flux panels for the AUG and W7-X neutral beam calorimeter by Orozco, G., Froeschle, M., den Harder, N., Heinemann, B., Nocentini, R., Riedl, R.

    Published in Fusion engineering and design (01-09-2019)
    “…Each of the neutral beam injectors in the experimental devices ASDEX Upgrade and Wendelstein 7-X can be equipped with up to four positive ion sources with an…”
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    Journal Article
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    The Bigger the Better? Analysis of Surgical Complications and Outcome of the Retrosigmoid Approach in 449 Oncological Cases by Aftahy, Amir Kaywan, Jörger, Ann-Kathrin, Hillebrand, Sandra, Harder, Felix N., Wiestler, Benedikt, Bernhardt, Denise, Combs, Stephanie E., Meyer, Bernhard, Negwer, Chiara, Gempt, Jens

    Published in Frontiers in oncology (05-07-2022)
    “…Introduction Exposure of the posterior skull base and the cerebellopontine angle is challenging due to important neurovascular structures. The retrosigmoid…”
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    Retrospective Motion Artifact Reduction by Spatial Scaling of Liver Diffusion-Weighted Images by Raspe, Johannes, Harder, Felix N., Rupp, Selina, McTavish, Sean, Peeters, Johannes M., Weiss, Kilian, Makowski, Marcus R., Braren, Rickmer F., Karampinos, Dimitrios C., Van, Anh T.

    Published in Tomography (Ann Arbor) (06-10-2023)
    “…Cardiac motion causes unpredictable signal loss in respiratory-triggered diffusion-weighted magnetic resonance imaging (DWI) of the liver, especially inside…”
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    Journal Article
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    iDermatoPath – a novel software tool for mitosis detection in H&E‐stained tissue sections of malignant melanoma by Andres, C., Andres‐Belloni, B., Hein, R., Biedermann, T., Schäpe, A., Brieu, N., Schönmeyer, R., Yigitsoy, M., Ring, J., Schmidt, G., Harder, N.

    “…Background Malignant Melanoma (MM) is characterized by a growing incidence and a high malignant potential. Besides well‐defined prognostic factors such as…”
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    Journal Article
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    Height of Rectal Cancer: A Comparison between Rectoscopic and Different MRI Measurements by Hofheinz, Ralf-Dieter, Schoenberg, Stefan O., Kaltschmidt, S., Dinter, D., Burkholder, I., Harder, F. N., Winter, J., Attenberger, U. I., Kienle, P.

    “…Purpose. To compare rigid rectoscopy with three different MRI measurement techniques for rectal cancer height determination, all starting at the anal verge, in…”
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    Journal Article
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    Type 2 diabetes risk alleles near ADCY5, CDKAL1 and HHEX-IDE are associated with reduced birthweight by Andersson, E. A, Pilgaard, K, Pisinger, C, Harder, M. N, Grarup, N, Færch, K, Poulsen, P, Witte, D. R, Jørgensen, T, Vaag, A, Hansen, T, Pedersen, O

    Published in Diabetologia (01-09-2010)
    “…Aims/hypothesis The fetal insulin hypothesis suggests that variation in the fetal genotype influencing insulin secretion or action may predispose to low…”
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    Journal Article
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    Silicon heterojunction solar cells: Influence of H2-dilution on cell performance by Gogolin, R., Ferré, R., Turcu, M., Harder, N.-P.

    Published in Solar energy materials and solar cells (01-11-2012)
    “…Surface passivation of hydrogenated amorphous silicon (a-Si:H) films is critically influenced by the hydrogen/silane ratio during PECVD deposition. Das et al…”
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    Journal Article Conference Proceeding
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    Elastic–plastic adhesive impacts of tungsten dust with metal surfaces in plasma environments by Ratynskaia, S., Tolias, P., Shalpegin, A., Vignitchouk, L., De Angeli, M., Bykov, I., Bystrov, K., Bardin, S., Brochard, F., Ripamonti, D., den Harder, N., De Temmerman, G.

    Published in Journal of nuclear materials (2015)
    “…Dust-surface collisions impose size selectivity on the ability of dust grains to migrate in scrape-off layer and divertor plasmas and to adhere to…”
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    Journal Article
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    Beam optics of RF ion sources in view of ITER’s NBI systems by den Harder, N., Barnes, M., Heinemann, B., Lindqvist, M., Nocentini, R., Orozco, G., Wimmer, C., Wünderlich, D., Fantz, U., Veltri, P.

    Published in Nuclear fusion (01-07-2024)
    “…Abstract A low beamlet divergence is crucial for the efficiency of the ITER-NBI systems, since it affects the transmission of the beam through the duct. There…”
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    Journal Article
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    Contributions of the extended ELISE and BATMAN Upgrade test facilities to the roadmap towards ITER NBI by Fantz, U., Wünderlich, D., Wimmer, C., Barnes, M., den Harder, N., Heinemann, B., Heiler, A., Lindqvist, M., Merk, F., Navarro, A., Nocentini, R., Orozco, G., Riedl, R., Yordanov, D., Zielke, D.

    Published in Nuclear fusion (01-08-2024)
    “…Abstract ITER’s NBI systems are a first of its kind system with very challenging targets for the RF-driven ion source and the acceleration stage. In a step…”
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    Journal Article
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