An overview on some 'scientific' opinions about comets in the seventeenth and eighteenth century

an overview on Goethe's visits in Kochberg

An overview of the life and the works of Jakob Wimpfeling (1450-1528), german writer and teacher

Some remarks on Lessing's journey to Italy (1775)

The detailed investigations of solubility of limestone und gypsum are essential for optimization of process conditions and operating material consumption in the flue gas scrubbers. This study compares thermodynamic predictions based on the Pitzer model for electrolyte activities with experimental data obtained from salt (gypsum, limestone, calcium adipat) solubility tests in aqueous model systems at high ionic strengths under different partial pressures of carbon dioxide. The high ionic strengths in these aqueous suspensions were achieved by addition of calcium chloride, calcium formate und calcium acetate. By means of measured data the Pitzer interaction parameters for ionic pairs Ca2+/HCO3-, Ca2+/SO42-, Ca2+/HCOO-, Ca2+/CH3COO- and Ca2+/(CH4)2(COO)22- at ionic strength up to 8 mol∙kg-1 were fitted and verified. The Pitzer parameters for interaction between calcium ions and carboxylic acid ions were published in this work for the first time. Also for the first time, the values of standard free energies of formation of calcium formate, calcium acetate and calcium adipate are published. The new model parameters allow a better calculation of thermodynamic equilibriums at industrial processes of flue gas cleaning.

The thesis at hand shall be a contribution to describe the Interaction between men and computer adequately and moreover to take into consideration empirical tests. In a first step, relevant theoretical linguistic approaches will be introduced. In this context, the class of speech-acts which are called 'computives' and have been developed by Schmitz, will decisively be enhanced by semiotical aspects. In a next step, the usefulness of empirical tests and the relevance of physiological data will be pointed out to reveal the stressors and to avoid them in future. Finally, possible research projects for the future according to the new theory of man-computer-interaction are described.

The thesis in hand analyses and discusses the predominance of economic utilization and of the socio-political and labour market principals of subsidy in the policy and practice of further education and training in a manner critical of corresponding ideologies and concepts. This provides a basis for the development of practice of further education that takes into account systematically the subjective perspective on interests in vocational competence development and that is compatible to the utilization interests of companies and the labour market as well. The reference to the subjective perspective of interest means in distance to socio-economical and political-normative positions such conditions on the supply side of further education and training that put the employees in a position to synthesise their interest in maintaining vocational competence and employability on the labour market with their aspirations in occupational and private life-course.

Glances of love. Transformations and variations of an idiomatic expression in the german literature from the middle ages till the 20th century

The beginnings of modern german nature poetry in the eighteenth century

Odowakar - the executor of the Roman Empire