72 Result(s)

Article

Photonic spectral density of coupled optical cavities

We study a pair of anharmonic optical cavities that is connected by an optical fiber. The photonic spectral density characterizes the evolution of the coupled cavities after the system has been prepared in a F...

K. Ziegler in Laser Physics (2012)

Article

Freezing während des Gehens

Freezing während des Gehens ist beim idiopathischem Parkinson-Syndrom und anderen zentralen Gangstörungen häufig. Bei den meisten Patienten tritt es im späteren Verlauf der Erkrankung auf. Vor dem Beginn der T...

F. Schroeteler, K. Ziegler, U.M. Fietzek, Prof. Dr. A. Ceballos-Baumann in Der Nervenarzt (2009)

Article

Disorder physics in mixtures of fermionic atoms

A mixture of light and heavy fermionic atoms in an optical lattice is considered. Tunneling of the heavy atoms is neglected such that they are only subject to thermal fluctuations. There is a complex interplay...

K. Ziegler in Laser Physics (2006)

Article

Altered patterns of cellular gene expression by JC virus

K. Ziegler, S. Verma, T. Bui, R. J. Frisque, R. Yanagihara… in Journal of NeuroVirology (2004)

Article

A rapid assay to conduct in-vitro polyomavirus DNA replication

K. Ziegler, T. Bui, R. J. Frisque, V. R. Nerurkar in Journal of NeuroVirology (2004)

Article

Floating Wigner molecules and possible phase transitions in quantum dots

A floating Wigner crystal differs from the standard one by a spatial averaging over positions of the Wigner-crystal lattice. It has the same internal structure as the fixed crystal, but contrary to it, takes i...

S.A. Mikhailov, K. Ziegler in The European Physical Journal B - Condense… (2002)

Article

Interacting Bose Gas in an Optical Lattice

A grand canonical system of hard-core bosons in an optical lattice is considered. The bosons can occupy randomly N equivalent states at each lattice site. The limit N→∞ is solved exactly in terms of a saddle-p...

K. Ziegler in Journal of Low Temperature Physics (2002)

Article

Hämolytische Krise bei einem 34-jährigen Westafrikaner

T. Ziegler, C. Winkler, H. R. Nagel, K. Wege, K. Ziegler, H. Schmechel in Der Internist (2000)

Article

Studien der Krankheitsverarbeitung nach einem Schlaganfall

Der Schlaganfall stellt für den Betroffenen eine Lebenskrise dar. Daraus resultierende psychische Probleme können Rehabilitationsergebnisse und Lebenszufriedenheit kurz‐ wie langfristig ebenso entscheidend b...

K. Hager, K. Ziegler in Zeitschrift für Gerontologie und Geriatrie (1998)

Article

Is the peak value of σ _xx at the quantum Hall transition universal?

The question of the universality of the longitudinal peak conductivity at the integer quantum Hall transition is considered. For this purpose, a system of 2D Dirac fermions with random mass characterised by va...

K. Ziegler, G. Jug in Zeitschrift für Physik B Condensed Matter (1997)

Chapter and Conference Paper

The Use of Fibrin Glue in Sclerotherapy for Esophageal Varices: Preliminary Results of a Controlled Prospective Study

In a randomized prospective study 26 patients with esophageal varices were treated after a first bleeding episode with either fibrin or polidocanol, both strictly injected intravariceal. Treatments were repeat...

F. Rucktäschel, K. Ziegler, T. Zimmer in Endoscopy (1995)

Article

Self-consistent approach for the two-dimensional Ising model with random bonds

A system of random fermions withN colors is investigated. This model corresponds forN=4 to the two-dimensional Ising model with random bonds. The limitN→∞ can be treated exactly and leads to a self-consistent des...

D. Braak, K. Ziegler in Zeitschrift für Physik B Condensed Matter (1992)

Article

Relationship between electroultrafiltration (EUF) extractable nitrogen, grain yield, and optimum nitrogen fertilizer rates for winter wheat

The objective of the investigation was to examine whether there exist relationships between the optimum nitrogen fertilizer rate for winter wheat and soil nitrogen fractions extracted by electroultrafiltration...

K. Ziegler, K. Nemeth, K. Mengel in Fertilizer research (1992)

Article

Quasiparticle states in disordered superfluids

A model for disordered superfluids and superconductors is considered in terms of the Bogoliubov-de Gennes equation with a random order parameter field. Two characteristic cases are distinguished: model I with ...

K. Ziegler in Zeitschrift für Physik B Condensed Matter (1992)

Article

Effect of anisotropy in the Abrikosov phase of copper oxide superconductors

A “flux liquid” serves as a model for the Abrikosov phase of a type II superconductor with short coherence length and strong fluctuations. Here we discuss the effect of anisotropy due to the planes in the mate...

K. Ziegler, P. Kumar in Zeitschrift für Physik B Condensed Matter (1991)

Article

Synthesis of affinity chromatography and electrophoresis matrices for the purification of bile acid transport proteins

For the purification of the bile acid transport proteins from rat hepatocytes high affinity taurocholic acid derivatives were synthesized. One type was designed for coupling to a Sepharose matrix and the other...

S. Müllner, W. Möller, K. Ziegler, H. Fasold in Chromatographia (1991)

Article

Statistics of colored flux lines

Ad-dimensional model of fluctuating flux lines with hard-core interaction is considered. Ford=3 this is a description of the Abrikosov flux phase in superconducting systems with short coherence length. Introducin...

K. Ziegler in Journal of Statistical Physics (1991)