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In soils of the Rustenbug Minig Area microorganism concentration and activity of several enzymes (dehydrogenase, phosphatase, protease, amylase, cellulase, xylanase) were determined. First results indicate an increase of heavy metal resistant Microorganisms and a possible inhibition of carbohydrate degrading enzymes.
Der Beitrag befasst sich mit dem Urteil des BGH vom 26.1.2001, V ZR 452/99. Der Verfasser zeigt die Fortsetzung der Rechtsprechung für die sog. Nachverwertungsverbote auf. Er erläutert, warum die Nachverwertungsklauseln zu den stark umstrittenen Konstruktionen in Treuhandanstalt-Verträgen zählen, und zeigt auf, warum das Urteil des BGH dazu führt, einen Verstoß dieser Klauseln gegen $ 9 AGBG nicht mehr mit der einseitigen Eingreifen der Klauseln zu Lasten des Käufers in das Äquivalenzverhältnis des Bertrages begründet werde kann.
Der Verfasser hebt die Haftungsprivilegierung des $ 1359 BGb hervor, stellt aber vergleichend den Haftungsmaßstab gegenüber. Auch die Regelungen der $$ 421 ff BGB fließen mit ein in die Überlegungen bzgl. einer Gesamtschuldnerhaftung bei Ehegatten im Vergleich zu nichtehelichen Lebensgemeinschaften. Auch werden im Zuge der Eröterung nicht nur die Tierhaltung, als auch alle anderen Haftungstypen beleuchtet.
Schnittstelle Kinderhand
(2001)
Social Organization
(2001)
Paulus
(2001)
Jüdische Aufklärung
(2001)
Implicit power motivation predicts testosterone changes after winning or losing a domiance contest
(2001)
International trade and spatial markets : trade policy from a theory of spatial pricing perspective
(2001)
Using the incompressible magnetohydrodynamic equations, we have numerically studied the dynamo effect in electrically conducting fluids. The necessary energy input into the system was modeled either by an explicit forcing term in the Navier-Stokes equation or fully selfconsistently by thermal convection in a fluid layer heated from below. If the fluid motion is capable of dynamo action, the dynamo effect appears in the form of a phase transition or bifurcation at some critical strength of the forcing. Both the dynamo bifurcation and subsequent bifurcations that occur when the strength of the forcing is further raised were studied, including the transition to chaotic states. Special attention was paid to the helicity of the flow as well as to the symmetries of the system and symmetry breaking in the bifurcations. The magnetic field tends to be accumulated in special regions of the flow, notably in the vicinity of stagnation points or near the boundaries of convection cells.
Die Sprachkritik Victor Klemperers im Muttersprachunterricht : Anmerkungen aus linguistischer Sicht
(2001)
Acoustic emission signals generated during high speed cutting of steel are investigated. The data are represen ted in time-folded form. Several methods from linear and nonlinear data analysis based on time- and frequency- domain are applied to the data and reveal signatures of the observed acoustic emission signal. These investiga tions are necessary for modeling the cutting process by means of differential equations.
Proof of Chirality of J-Aggregates Spontaneously and Enantioselectivily Generated from Achiral Dyes
(2001)
Christoph Heins Lektüren
(2001)
Einleitung
(2001)
We analyse the X-ray light curves of compact objects using linear and nonlinear time series analysis methods. A Power Density Spectrum (PDS) describes the overall second order properties of the observed data well. To look beyond we propose the nonlinear Q-statistic to detect an asymmetry of the time series. This allows us to find relevant time scales. This method even grants a subclassification of the known states of X-ray sources.
Alejandro de Humboldt se interesó mucho por el problema de comprender las manifestaciones del arte indígena de América. Basándose su visión del arte en la educación de la ilustración y del humanismo, Humboldt llegó a conclusiones que oscilan entre admiración de los monumentos como tales de la historia e ideas del desarrollo del arte humana desde formas primitivas comparables con las de ensayos de niños hasta formas más elaboradas y primorosas de los griegos antiguos. Superó sus prejuicios analizando detalles y aclarando que se tendría que reflexionar sobre las circunstancias sociales del desarrollo artístico y quedar abierto para una discusión acerca de lo que se observa e interpreta.
Impacts of agricultural land use on the environment are various and do not contribute to modifications of the ecology of central European landscapes. They do not only cause a progressive reduction of the number of plant ans animal specis typical for central Europe. Ever since the increasing intensification of farming, from the application of large amounts of fertilizers and pesticides to the use of increasingly larger machinery and progressive specialization there has also been an increase of other, hitherto little noticed environmental impacts. Heavy machinery and cultivation during disadvantageous weather will provoke soil compaction. Unvarying crop rotation systems and plouging of terrain too steep for it will increase water erosion. Due to groundwater lowering former peat lands are increasingly prone to desiccation and thus extremely susceptible to wind erosion. High rates of fertilizer application contiuously increase the risk of nitrate eluviation into the groundwater. These hazards are explained and measures of reduction are shown. The latter are indeed compatible with the aims of intensive farming but with less negative consequences for the environment. Above all they make sure that future generations will be able to continue farming the agricultural lands of central Europe that have been under cultivation for thousands of years.
Transition to Coherence in Populations of Coupled Chaotic Oscillators: A Linear Response Approach
(2001)
We consider the collective dynamics in an ensemble of globally coupled chaotic maps. The transition to the coherent state with a macroscopic mean field is analyzed in the framework of the linear response theory. The linear response function for the chaotic system is obtained using the perturbation approach to the Frobenius-Perron operator. The transition point is defined from this function by virtue of the self-excitation condition for the feedback loop. Analytical results for the coupled Bernoulli maps are confirmed by the numerics.