@article{WalzUkhanovZimmermann2000, author = {Walz, Bernd and Ukhanov, Kyrill and Zimmermann, Bernhard}, title = {Actions of neomycin on electrical light responses : Ca2+ release and intracellular Ca2+ changes in photoreceptors of the honeybee drone}, issn = {0340-7594}, year = {2000}, language = {en} } @article{UkhanovWalz2000, author = {Ukhanov, Kyrill and Walz, Bernd}, title = {The phosphoinositide signaling cascade is involved in photoreception in the leech Hirudo medicinalis}, issn = {0340-7554}, year = {2000}, language = {en} } @article{ZillmerAhlersPikovskij2000, author = {Zillmer, R{\"u}diger and Ahlers, Volker and Pikovskij, Arkadij}, title = {Scaling of Lyapunov exponents of coupled chaotic systems}, year = {2000}, abstract = {We develop a statistical theory of the coupling sensitivity of chaos. The effect was first described by Daido [Prog. Theor. Phys. 72, 853 (1984)]; it appears as a logarithmic singularity in the Lyapunov exponent in coupled chaotic systems at very small couplings. Using a continuous-time stochastic model for the coupled systems we derive a scaling relation for the largest Lyapunov exponent. The singularity is shown to depend on the coupling and the systems' mismatch. Generalizations to the cases of asymmetrical coupling and three interacting oscillators are considered, too. The analytical results are confirmed by numerical simulations.}, language = {en} } @article{KuhlbrodtNevir2000, author = {Kuhlbrodt, Till and N{\´e}vir, Peter}, title = {Low-order point vortex models of atmospheric blocking}, year = {2000}, abstract = {Conceptual models of blocking structures are constructed by reducing the twodimensional atmospheric vorticity field to a few point vortices. The flow is assumed to be barotropic and divergence-free, and a blocking event is represented by a point vortex dipole. The focus is here on the motion of the blocking dipole under the influence of the zonal mean flow. This is modelled in three different ways: A dipole embedded in a latitude-dependent zonal mean flow exhibits neutrally stable oscillations; their period is estimated analytically. A cyclonic point vortex approaching from upstream can either pass the dipole or break it up, so that an \$Omega\$-shaped pattern of three vortices emerges. The stationarity of a blocking between two troughs is modelled by four point vortices. These low-order point vortex models are compared with the dynamics of real blockings in case studies. Despite their high degree of simplification, those models reproduce the kinematics of blocking events properly. This results from the discretization of the flow to its actual physical states, the vortices, in contrast to the common, purely mathematical discretization to grid points. Thus, point vortex dynamics are proposed to be a powerful completion of continuous fluid dynamics in explaining blocking events.}, language = {en} } @article{RawelRohnKroll2000, author = {Rawel, Harshadrai Manilal and Rohn, Sascha and Kroll, J{\"u}rgen}, title = {Reactions of selected secondary plant metabolites (glucosinolates and phenols) with food proteins and enzymes - Influence on physicochemical properties, enzyme activity and proteolytic dagradation}, year = {2000}, language = {en} } @article{DeneckeMruczek2000, author = {Denecke, Klaus-Dieter and Mruczek, Krysztyna}, title = {P-compatible Hypersubstitutions}, year = {2000}, language = {en} } @article{DeneckeMahdavi2000, author = {Denecke, Klaus-Dieter and Mahdavi, Kazem}, title = {The order of normal form hypersubstitutions of type 2}, year = {2000}, language = {en} } @article{HenkelJoulainCarminatietal.2000, author = {Henkel, Carsten and Joulain, Karl and Carminati, R{\´e}mi and Greffet, Jean-Jacques}, title = {Spatial coherence of thermal near fields}, year = {2000}, abstract = {We analyze the spatial coherence of the electromagnetic field emitted by a half-space at temperature T close to the interface. An asymptotic analysis allows to identify three different contributions to the cross-spectral density tensor in the near-field regime. It is shown that the coherence length can be either much larger or much shorter than the wavelength depending on the dominant contribution.}, language = {en} } @book{Liebers2000, author = {Liebers, Klaus}, title = {Physik plus : Kl. 7, Arbeitsh., Gymnasium Th{\"u}ringen}, editor = {Mikelskis, Helmut and Wilke, Hans-Joachim}, publisher = {Cornelsen}, address = {Berlin}, isbn = {3-06-020771-2}, pages = {40 S.}, year = {2000}, language = {de} } @article{MannKrivovKimura2000, author = {Mann, Ingrid and Krivov, Alexander V. and Kimura, Hiroshi}, title = {Dust cloud near the sun}, year = {2000}, language = {en} }