Schwefelbestimmungsapparat (D. R. G. M.)

Ohne Zusammenfassung(Mit Abbildung.)     

Chemistry and dynamics in the thought of G.W. Leibniz I

Chemistry and dynamics are closely related in G.W. Leibniz's thinking, from the corpuscularism of his youth to the theory of conspiracy movements that he proposes in his later years. Despite the importance of chemistry and chemical thought in Leibniz's philosophy, interpreters have not paid enough attention to this subject, especially in the recent decades. This work aims to contribute to filling this gap in Leibnizian studies. In this first part of the work I will expose the theory of matter that the young Leibniz conceives under the influence of chemical corpuscularism. Leibniz uses R. Boyle's interpretation of the Aristotelian idea of form in order to give an explanation of the unity and cohesion of bodies. As opposed to the Cartesians, Leibniz puts forth the idea of a dependence between the variables of extension, movement and figure, without losing analytical clarity and with the aim of extending the explanatory power of physics to natural phenomena difficult to approach by Cartesian mechanics.

     

CHARACTERIZATION OF NANOSTRUCTURES:TOOLS AND CHALLENGES G.Cox,W.Wohlleben and W.Schrepp

Apart from long-known and applied nanostructures like carbon black for tyres or pigments for coatings nanotechnoiogy has created highly sophisticated structures used for nano/molecular electronics,diagnostics,drug delivery,UV-absorbers etc.Often the main question to be solved analytically is the local determination of tiny amounts of chemicals resulting in an ever increasing need for highly sensitive as well as locally resolved techniques.Applications of techniques like mass spectroscopy,transmission electron microscopy as well as ultracentrifugation to problems arising from nanotechnology in the chemical industry will be described.     

Yields of radiolysis products from γ-irradiated supercritical water—A re-analysis data by W.G. Burns and W.R. Marsh

This note provides a corrected set of G-values for radiolysis yields from γ-irradiated supercritical water at 400 °C recalculated from data previously published by W.G. Burns and W.R. Marsh and compares these yields with more recent data from pulse radiolysis experiments.