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Multiplicity of homoclinic solutions for singular second order conservative systems
(Cambridge University Press (CUP), 1996)We consider a class of second-order systems , with q(t) ∊ℝn, for which the potential energy V: ℝn\S→ℝ admits a (possibly unbounded) singular set S ⊂ℝn and has a unique absolute maximum at 0 ∈ℝn. Under some conditions on S ... -
Marktorientiertes Produkt- und Kostenmanagement: Target Costing – ein Hilfsmittel?
(1996)Die verschärften Wettbewerbsbedingungen durch den wachsenden Anteil an Billiganbietern aus Fernost sowie die Globalisierung der Märkte zwingen insbesondere mittelständische Unternehmen, schnell und kostengünstig am Markt ... -
Vegetationsökologie mitteleuropäischer Wälder: Kolloquium zum "Ökologietag" 1995 in Berlin
(TU, Univ.-Bibliothek, Abt. Publ., 1996) -
Changes in plasma membrane H+-ATPase activity during aeration of maize roots
(1996)Plasma membrane-enriched vesicles were isolated by density gradient centrifugation from maize roots previously submersed for 2 h with or without aeration in a 1 mmol/L CaSO4 solution, a condition which can modify the rate ... -
Investigation of the use of honey bees and honey bee products to assess heavy metals contamination
(1996)Experiment was carried out using 12 colonies of honey bees bred in hives located near an extraurban crossroad. We analyzed the Pb, Cd and Zn deposited on the bee's surfaces and the heavy metal accumulation in the foragers, ... -
Analysis of intercellular cadmium forms in roots and leaves of bush bean
(1996)We characterized and quantified the chemical form of cadmium (Cd) in intercellular solutions of the apparent free space (AFS) of roots and leaves of bush bean plants. Plants were grown in sand and treated daily for five ... -
Microscopic Analysis of Noise Behavior in Semiconductor Devices by the Cellular Automaton Method
(Springer US, 1996)Noise is one of the crucial features in modern semiconductor devices. Nevertheless, only a few microscopic investigations of intrinsic noise behavior of semiconductor devices in the GHz regime have been performed in the ... -
HEMT models and simulations
(Springer, 1996)The paper presents a series of modeling tools for pseudomorphic High Electron Mobility Transistors, discussing their physical content and presenting specific applications. The presented results will show the most peculiar ... -
Dynamics of Exciton Formation and Relaxation in Semiconductors
(Springer US, 1996)Optical excitation above the band gap of a semiconductor generates hot carrier distributions which subsequently relax towards an equilibrium with the crystal lattice. Simultaneously, electron-hole (e-h) pairs may undergo ...