Isobar configurations in the two nucleon system with separable potentials

A set of separable potentials forNN, NΔ andΔΔ configuration transition potentials was fitted toNN phase shifts, the deuteron binding energy and the quadrupole moment. Our results agree quite well with more realistic calculations and will be especially useful for numerical investigations of Faddeev like relativistic few body problems.     

Zum Meusnierschen Satz

Ohne ZusammenfassungHerrnFriedrich Pfeiffer zum 60. Geburtstag gewidmet.     

Einen Beitrag zur Untersuchung und Beurteilung von Krebssuppen

Ohne Zusammenfassung     

Engine Control using Neural Networks: A New Method in Engine Management Systems

To be able to meet the demands of low emissions and fuel consumption ofmodern combustion engines, new ways have to be found to control thecombustion. We use new sensors to measure the pressure in the combustionchamber and analyze this signal with a neural network in order to receiveseveral form factors which can be used to control the ignition timing. Theneural network is trained off line with measured data and used on line toderive the form factors. The proposed algorithm can be computed in real timeon conventional digital signal processors and adapted to new engines withvery little effort.     

Lead(II) Transport processes in anodic stripping voltammetric analysis

The principal lead(II) transport processes occurring in anodic stripping voltammetric analysis of sea water have been studied by liquid scintillation spectrometry of ²¹⁰Pb. From an initial lead(II) concentration of 6.3 · 10^?9 M (ca. 1.3 p.p.b.), the concentration after 95 min is reduced by: (1) 84 % at pH 8.2, (2) 78 % at pH 4.6, and (3) 39 % at pH 3.0. Primary losses are due to adsorption onto cell and electrode materials. Significant chemisorption of lead(II) associated with chloride occurs at the platinum wire counter electrode. The data support a diffusion-limited adsorption mechanism as the primary transport for lead(II) from solution.     

Über die Konstruktion von Parallelen mit Hilfe des Lineals und ortsfester rechter Winkel

Ohne ZusammenfassungHerrnRobert Sauer zum 60. Geburtstag gewidmet     

Mean values with cubic characters

We investigate various mean value problems involving order 3 primitive Dirichlet characters. In particular, we obtain an asymptotic formula for the first moment of central values of the Dirichlet L-functions associated to this family, with a power saving in the error term. We also obtain a large sieve-type result for order 3 (and 6) Dirichlet characters.     

Lepton-pair production from deep inelastic scatteringin peripheral relativistic heavy ion collisions

We calculate the inelastic electron- and muon-pair production in peripheral relativistic heavy ion collisions in the region of large Q² of one of the photons. This offers a possibility to study the quark distribution functions in ions in "ultraperipheral heavy ion collisions". The calculations are compared with those making use of the equivalent photon and the equivalent lepton approximation. We compare the results for Pb-Pb and Pb-p collisions at RHIC (γ ≈ 100) and LHC (γ ≈ 3000) energies. Furthermore we include nuclear modifications to the parton distribution functions in our calculations to study their effect on the cross sections.