Browsing by Subject "geometry"

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  • Comparison of two prototypes of a magnetically adjustable glaucoma implant in rabbits 
    Schwerk, Birthe; Harder, Lisa; Windhövel, Claudia; Hewicker-Trautwein, Marion; Wagner, Anna; Bach, Jan-Peter; Voigt, Lena Carolin; Hinze, Ulf; Chichkov, Boris; Haferkamp, Heinz; Lubatschowski, Holger; Nikolic, Stephan; Nolte, Ingo (San Francisco, CA : Public Library of Science (PLoS), 2019)
    Glaucoma drainage devices are used in surgical glaucoma therapy. Success of controlling the intraocular pressure is limited due to fibrous implant encapsulation and fibrin coating on the implant which lead to drainage ...
  • Conductance fluctuations at the quantum Hall plateau transition 
    Hohls, Frank; Zeitler, U.; Haug, Rolf J. (College Park, MD : American Physical Society, 2002)
    We analyze the conductance fluctuations observed in the quantum Hall regime for a bulk two-dimensional electron system in a Corbino geometry. We find that characteristics like the power spectral density and the temperature ...
  • Cosmological constant, near brane behavior and singularities 
    Gautason, Fridrik Freyr; Junghans, Daniel; Zagermann, Marco (New York, NY : Springer International Publishing, 2013)
    We show that the classical cosmological constant in type II flux compactifications can be written as a sum of terms from the action of localized sources plus a specific contribution from non-trivial background fluxes. ...
  • Deformation quantization of endomorphism bundles 
    Aastrup, Johannes (Berlin : De Gruyter, 2005)
    [No abstract available]
  • A highly stable monolithic enhancement cavity for second harmonic generation in the ultraviolet 
    Hannig, S.; Mielke, J.; Fenske, J.A.; Misera, M.; Beev, N.; Ospelkaus, C.; Schmidt, Piet O. (College Park, MD : American Institute of Physics, 2018)
    We present a highly stable bow-tie power enhancement cavity for critical second harmonic generation (SHG) into the UV using a Brewster-cut β-BaB2O4 (BBO) nonlinear crystal. The cavity geometry is suitable for all UV ...
  • How geometry affects sensitivity of a differential transformer for contactless characterization of liquids 
    Berger, Marc; Zygmanowski, Anne; Zimmermann, Stefan (Basel : MDPI, 2021)
    The electrical and dielectric properties of liquids can be used for sensing. Specific appli-cations, e.g., the continuous in-line monitoring of blood conductivity as a measure of the sodium concentration during dialysis ...
  • Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries 
    Haist, Michael; Link, Juliane; Nicia, David; Leinitz, Sarah; Baumert, Christian; von Bronk, Tabea; Cotardo, Dario; Eslami Pirharati, Mahmoud; Fataei, Shirin; Garrecht, Harald; Gehlen, Christoph; Hauschildt, Inga; Ivanova, Irina; Jesinghausen, Steffen; Klein, Christopher; Krauss, H.-W.; Lohaus, Ludger; Lowke, Dirk; Mazanec, Oliver; Pawelczyk, Sebastian; Pott, Ursula; Radebe, Nonkululeko W.; Riedmiller, Joachim Jürgen; Schmid, Hans-Joachim; Schmidt, Wolfram; Secrieru, Egor; Stephan, Dietmar; Thiedeitz, Mareinke; Wilhem, Manfred; Mechtcherine, Viktor (Cachan : RILEM Publications SARL, 2020)
    This paper presents the results of an interlaboratory study of the rheological properties of cement paste and ultrasound gel as reference substance. The goal was to quantify the comparability and reproducibility of ...
  • Laser processing of carbon fiber reinforced plastics - Release of carbon fiber segments during short-pulsed laser processing of CFRP 
    Walter, Jürgen; Brodesser, Alexander; Hustedt, Michael; Bluemel, Sven; Jaeschke, Peter; Kaierle, Stefan (Amsterdam : Elsevier B.V., 2016)
    Cutting and ablation using short-pulsed laser radiation are promising technologies to produce or repair CFRP components with outstanding mechanical properties e.g. for automotive and aircraft industry. Using sophisticated ...
  • On the arc filtration for the singularities of Arnold's lists 
    Ebeling, Wolfgang; Gusein-Zade, Sabir M. (Cambridge : Cambridge University Press, 2005)
    In a previous paper, the authors introduced a filtration on the ring script O signv,0 of germs of functions on a germ (V, 0) of a complex analytic variety defined by arcs on the singularity and called the arc filtration. ...
  • On the Severi problem in arbitrary characteristic 
    Christ, Karl; He, Xiang; Tyomkin, Ilya (Berlin ; Heidelberg : Springer, 2022)
    In this paper, we show that Severi varieties parameterizing irreducible reduced planar curves of a given degree and geometric genus are either empty or irreducible in any characteristic. Following Severi’s original idea, ...
  • Overall glycemic index and glycemic load of vegan diets in relation to plasma lipoproteins and triacylglycerols 
    Waldmann, Annika; Ströhle, Alexander; Koschizke, Jochen W.; Leitzmann, Claus; Hahn, Andreas (Basel : S. Karger AG, 2007)
    Background: To investigate the overall glycemic index (GI), glycemic load (GL), and intake of dietary fiber, and to examine the associations between these factors and plasma lipoproteins and triacylglycerols in adult vegans ...
  • Role of domain walls in the abnormal photovoltaic effect in BiFeO 3 
    Bhatnagar, Akash; Roy Chaudhuri, Ayan; Kim, Young Heon; Hesse, Dietrich; Alexe, Marin (London : Nature Publishing Group, 2013)
    Recently, the anomalous photovoltaic (PV) effect in BiFeO 3 (BFO) thin films, which resulted in open circuit voltages (V oc) considerably larger than the band gap of the material, has generated a revival of the entire field ...
  • Scaling of technical systems using an object-based modelling approach 
    Wolniak, Philipp; Sauthoff, Bastian; Lachmayer, Roland; Mozgova, Iryna (Cambridge : Cambridge University Press, 2019)
    Companies that operate and manufacture products in the technical area are exposed to increasingly challenging market situations. The developed products should be individualized to the customers' needs while offering high ...
  • Separation of soil macropore types in three-dimensional X-ray computed tomography images based on pore geometry characteristics 
    Leue, Martin; Uteau-Puschmann, Daniel; Peth, Stephan; Nellesen, Jens; Kodešová, Radka; Gerke, Horst H. (Hoboken, NJ : Wiley, 2019)
    In structured soils, earthworm burrows, root channels, shrinkage cracks, and interaggregate spaces form complex macropore networks. Depending on the type and morphological properties, each macropore surface type is coated ...
  • Superlattice structures in twisted bilayers of folded graphene 
    Schmidt, Hennrik; Rode, Johannes C.; Smirnov, Dmitri; Haug, Rolf J. (London : Nature Publishing Group, 2014)
    The electronic properties of bilayer graphene strongly depend on relative orientation of the two atomic lattices. Whereas Bernal-stacked graphene is most commonly studied, a rotational mismatch between layers opens up a ...