Mean electromotive force proportional to mean flow in mhd turbulence (2009)
In mean-field magnetohydrodynamics the mean electromotive force due to velocity and magnetic field fluctuations plays a crucial role. In general it consists of two parts, one independent of and...
The alpha effect in rotating convection with sinusoidal shear (2009)
Käpylä, P. J., Korpi, M. J., Brandenburg, A.
Using three-dimensional convection simulations it is shown that a sinusoidal variation of horizontal shear leads to a kinematic \alpha effect with a similar sinusoidal variation. The effect exists...
The alpha effect with imposed and dynamo-generated magnetic fields (2009)
Hubbard, A., Del Sordo, F., Käpylä, P. J., Brandenburg, A.
Estimates for the nonlinear alpha effect in helical turbulence are presented using two different approaches where a uniform magnetic field is applied either to the actual field, or where separate...
Integrated point of care testing system based on low cost polymer biochips (2009)
Brandenburg, A., Curdt, F., Nestler, J., Otto, T., Wunderlich, K., Michel, D.
A new diagnostic testing device is proposed for point of care (POC) applications. It consists of a microfluidic cartridge with a polymer biochip and an instrument for reading the biochip and...
Biochip readout system for point-of-care applications (2009)
Brandenburg, A., Curdt, F., Sulz, G., Ebling, F., Nestler, J., Wunderlich, K., ...
A new low cost biochip readout system based on total internal reflection fluorescence (TIRF) including microfluidics is presented. The system is suitable for point-of-care diagnostics employing...
Compact point-of-care system for clinical diagnostics (2009)
Kemmler, M., Koger, B., Sulz, G., Sauer, U., Schleicher, E., Preininger, C., ...
Objective of the study is the simultaneous measurement of three sepsis relevant parameters using a novel point-of-care system. Investigated parameters are C-reactive protein (CRP), inteFleukin-6...
Turbulent stresses as a function of shear rate in a local disk model (2008)
Liljeström, A. J., Korpi, M. J., Käpylä, P. J., Brandenburg, A., Lyra, W.
We present local numerical models of accretion disk turbulence driven by the magnetorotational instability with varying shear rate. The resulting turbulent stresses are compared with predictions of a...
A. Brandenburg, DESY Forschung Hochenergiephysik, M. Maniatis, M.M. Weber, P.M. Zerwas
Journal article
Highly integrated polymer-based technology platform for in-vitro diagnostics (2008)
Otto, T., Nestler, J., Morschhauser, A., Schüller, M., Gessner, T., Krissler, J., ...
Live cell monitoring - development of an automated cell cultivation and monitoring system (2008)
Malthan, D., Huchler, R., Brandenburg, A., Thielecke, H., Hildebrandt, C., Zühlke, D.
The reproducibility and comparability of cell cultures presently suffers from different and user-dependant handling by the technical personnel in the cell culture laboratory. Although there are first...
Magnetic drift processes in differentially rotating turbulence (2007)
A&A manuscript no. (will be inserted by hand later) Your thesaurus codes are:
M. J. Korpi, A. Brandenburg, A. Shukurov, I. Tuominen, A. Nordlund
The dynamic state of the interstellar medium heated and stirred by supernovae (SNe) is simulated using a three-dimensional non-ideal MHD model in a domain extended 0:5 \Theta 0:5 kpc horizontally and...
Stein Georgobiani And, R. F. Stein, D. Georgobiani, D. J. Bercik, A. Brandenburg, A. Nordlund
Introduction The structure of the solar surface and its atmosphere is controlled by turbulent convection. Magnetic flux tubes which emerge through the surface are shuffled around by the convective...
A Helicity Proxy From Horizontal Flow Patterns (2007)
G. Rüdiger, A. Brandenburg, V.V. Pipin
. Motivated by new observations of solar surface flow patterns of mesogranulation, theoretical computations of the horizontal divergence-vorticity correlation are presented. Because of its close...
W. Bernreuther, A. Brandenburg, Z. G. Si, P. Uwer
TTP03-14 Spin properties of top quark pairs produced at hadron colliders
B. Von Rekowski, W. Dobler, A. Shukurov, A. Brandenburg
Abstract. We study the eects of vertical out ows on mean-eld dynamos in disks. These out ows could be due to thermal winds or magnetic buoyancy. We analyse numerical solutions of the nonlinear...
A. Bardou, A. Brandenburg, A. Shukurov
Astronomy & Astrophysics manuscript no. (DOI: will be inserted by hand later) The e#ects of vertical outflows on disk dynamos
A. Bardou, W. Dobler, A. Brandenburg
The e#ects of vertical outflows on disk dynamos
A. Brandenburg, A. Nordlund, R. F. Stein, U. Torkelsson
Abstract: The magnetic shear instability appears to be a workable mechanism for generating turbulence in accretion discs. The magnetic field, in turn, is generated by a dynamo process that taps...
Structured outflow from a dynamo active disc (2007)
A. Brandenburg, W. Dobler, A. Shukurov, B. Von Rekowski
A&A manuscript no. (will be inserted by hand later) Your thesaurus codes are:
M. Ossendrijver, M. Stix, A. Brandenburg, A. Br
We present numerical simulations of three-dimensional compressible magnetoconvection in a rotating rectangular box that represents a section of the solar convection zone. The box contains a...
M. Ossendrijver, M. Stix, A. Brandenburg, G. Rüdiger
We study the pumping of magnetic ux in three-dimensional compressible magnetoconvection in the context of stellar dynamos. The simulation domain represents a rectangular section from the lower part...
DE 102007033124 A1 UPAB: 20090311 NOVELTY - The device for optical detection of substances in fluid or gaseous medium, comprises a carrier with molecules for the recognition of the substances to be...
Online monitoring of airborne allergenic particles (OMNIBUSS) (2006)
Scharring, S., Brandenburg, A., Breitfuss, G., Burkhardt, H., Dunkhorst, W., Ehr, M. Von, ...
Dissociation in a polymerization model of homochirality (2005)
Brandenburg, A., Andersen, A. C., Nilsson, M.
A fully self-contained model of homochirality is presented that contains the effects of both polymerization and dissociation. The dissociation fragments are assumed to replenish the substrate from...
Signatures of Axinos and Gravitinos at Colliders (2005)
Brandenburg, A, Covi, L, Hamaguchi, K, Roszkowski, L, Steffen, F D
The axino and the gravitino are well-motivated candidates for the lightest supersymmetric particle (LSP) and also for cold dark matter in the Universe. Assuming that a charged slepton is the...
Transient Liquid Phase Bonding (2005)
Bobzin, K., Bosse, L., Brandenburg, A., Dilthey, U., Erdle, A., Ferrara, S., ...
WO2005050280 A UPAB: 20050715 NOVELTY - Microscope system has a flat light guide (1) with a section (2), upon which the specimen is mounted. This has a light-coupling grating or prism (6) at one end....
Investigation of Top quark spin correlations at hadron collider (2004)
Bernreuther, W, Brandenburg, A, Si, Z G, Uwer, Peter
We report on our results about hadronic $t\bar t$ production at NLO QCD including $t, \bar t$ spin effects, especially on $t\bar t$ spin correlations.
Brandenburg, A, Dittmaier, S, Weinzierl, S, Uwer, Peter
The reaction pp/pbar p -> t tbar jet+X is an important background process for Higgs boson searches in the mass range below 200 GeV. Apart from that it is also an ideal laboratory for precision...
The QCD/SM working group: Summary report (2004)
Dobbs, Matt, Frixione, S., Laenen, E., De Roeck, A., Tollefson, K., Andersen, J., ...
Top quark pair production and decay at hadron colliders (2004)
Bernreuther, W, Brandenburg, A, Si, Z G, Uwer, Peter
In ongoing and upcoming hadron collider experiments, top quark physics will play an important role in testing the Standard Model and its possible extensions. In this work we present analytic results...
Brandenburg, A., Lehr, H., Klapproth, H., Reimann, M.
WO 200153822 A UPAB: 20010831 NOVELTY - Determination of temperature-dependent parameters, such as association/dissociation parameters and/or equilibrium constants, of complexes. A fluorescent dye...
WO2004053437 A UPAB: 20040802 NOVELTY - Fourier transform spectrometer comprises a beam splitter (2A) and a detector cell (3). The beam splitter produces two divergent beam bundles (L2, L3) from a...
WO2004068502 A UPAB: 20040910 NOVELTY - The carrier (3) comprises an optical waveguide (23). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the method of manufacture. USE - A probe with...
Sonde fuer ein optisches Nahfeldmikroskop und Verfahren zu deren Herstellung (2004)
Brandenburg, A., Kuenzel, C., Eberhard, D.
WO2004068501 A UPAB: 20040910 NOVELTY - The tip (2) of the probe (1) is constructed as a solid structure which is mounted on a planar surface (4) of the carrier (3). DETAILED DESCRIPTION - An...
Verfahren und Vorrichtung zum Bestimmen von Proteinen auf einem Reaktionstraeger (2003)
EP 1281969 A UPAB: 20030522 NOVELTY - To determine the presence or absence of at least one polypeptide/protein, at least at one measurement point (10) on a reaction carrier, the sample is exposed to...
WO 200125759 A UPAB: 20010615 NOVELTY - Emission from bound fluorescent dyes in the evanescent field of the excitation light is coupled into the planar optical waveguide and then to a detector....
Optische Detektoreinrichtung (2002)
NOVELTY - The detection device has a light source, a light divider for providing 2 sources for measuring and reference light paths (3,4) with adjustment of the phase velocity of the light in the...
Vorrichtung zum Ausleuchten einer Flaeche (2001)
NOVELTY - The arrangement has an optical device (3) or collecting lens with an optical axis for focussing light and a scattering lens (2) arranged between the optical device and the surface, whereby...
Interferometric sensor for detection of surface-bound bioreactions (2000)
Brandenburg, A., Krauter, R., Künzel, C., Stefan, M., Schulte, H.
A peep into a different world (2000)
Dilthey, U., Brandenburg, A., Weck, M., Petersen, B.
In 1997 the collaborative research centre "Assembly of Hybrid Micro Systems" was established at the RWTH Aachen. Its aim is to elaborate the principles for the production of micro systems in hybrid...
Der Blick in eine andere Welt (2000)
Dilthey, U., Brandenburg, A., Weck, M., Petersen, B.
Der 1997 in Aachen angesiedelte Sonderforschungsbereich SFB 440 "Montage hybrider Mikrosysteme" hat sich zum Ziel gesetzt, die Grundlagen für die Herstellung von Mikrosystemen in hybrider Bauweise...
Verfahren und Vorrichtung zur Lichteinkopplung in einen planaren Wellenleiter (2000)
The invention relates to a process and a device for injecting light into a planar waveguide (thin, light-conducting film) consisting of the auxiliary waveguide guiding the light to be injected. In...
Interferometric biosensors for medical diagnostics (1999)
Brandenburg, A., Krauter, R., Vogel, C., Stefan, M., Schulte, H., Bier, F. F., ...
Evolution of a superbubble in a turbulent, multi-phased and magnetized ISM (1999)
M. J. Korpi, A. Brandenburg, A. Shukurov, I. Tuominen
. The evolution of a superbubble is simulated using a local three-dimensional, non-ideal MHD model, which includes galactic differential rotation, an external gravitational potential, heating via...
Magnetic Drift Processes in Differentially Rotating Turbulence (1999)
. The mean electromotive force is considered in a differentially rotating fluid taking into account stretching of the turbulent magnetic field. Calculations are performed by making use of the second...
Effects of Higgs sector CP violation in top-quark pair production at the LHC (1998)
Bernreuther, W, Brandenburg, A, Flesch, M
A striking manifestation of CP violation in the electroweak symmetry breaking sector would be the existence of neutral Higgs boson(s) with undefined CP parity. We analyse signatures of such a boson,...
Magnetic and Vertical Shear Instabilities in Accretion Discs (1997)
The stability properties of magnetised discs rotating with angular velocity\Omega = \Omega\Gamma s; z), dependent on both the radial and vertical coordinates s and z, are considered. Such a rotation...
Supercomputer windows into the solar convection zone (1996)
A. Nordlund, R. F. Stein, A. Brandenburg
Abstract. We discuss the properties of convection in the solar convection zone(CZ), as revealed by supercomputer simulations. One class of models, covering roughly the first half of the logarithmic...
Magnetic Structures in a Dynamo Simulation (1996)
A. Brandenburg, R. L. Jennings, M. Rieutord, A. Nordlund, I. Tuominen, ...
this paper is to present new results obtained in such high resolution numerical experiments and to investigate the magnetic structures associated with the dynamo process and their correlation with...
Nonlocal Transport of Passive Scalars in Turbulent Penetrative Convection (1996)
M.S. Miesch, A. Brandenburg, E.G. Zweibel
this paper is to explore one possible prescription: the transilient matrix approach first applied by Stull (1993) to atmospheric science problems. In the remainder of this introduction we place this...
Ammonia detection by integrated optical evanescent wave sensors (1995)
Brandenburg, A., Edelhäuser, R., Wolfbeis, O., Werner, T., He, H.
Integrierte Optik auf Glasbasis für Sensoren und Sensorsysteme (1988)
Es wird eine kurze Einfuehrung in die Herstellungsverfahren von integriert-optischen Bauelementen auf Glasbasis gegeben. Die Herstellung von Wellenleitern durch thermischen und feldunterstuetzten...
Integrated optical couplers with circular waveguides. (1986)
Schlaak, H.F., Sulz, G., Brandenburg, A.
(Integrated optical couplers with circular waveguides have been fabricated by ion exchange in BK7 glass and investigated. A theoretical model for the coupling ratio with good agreement to the...
Improved substrate glass for planar waveguides by Cs-ion exchange. (1986)
Ross, L., Lilienhof, H., Holscher, U., Schlaak, H.F., Brandenburg, A.
(Preparation and properties of planar waveguides can be improved essentially by using glasses for ion-exchange. A new glass for the preparation of planar waveguides with variable refractive index...
Experimental investigation of stress in ion-exchanged glass waveguides. (1986)
(Integrated optical waveguides, formed by ion-exchange in glass show considerable compression or tension. This stress is measured and its influence on the increase of refractive index and on the...