An Environmental Engineering Approach to Green Chemistry-Catalysis

21 st century is the time to evaluate the “total quality” in terms of the environment, energy and resources of the world. All the nations have to unite in resource protection, depollution, reuse and recycling concepts. In order to adopt sustainable development, man has to try the way to find out processes and products that maximize economic and environmental benefits and social responsibility. Catalysis is an economically and ecologically important field in the production integrated environmental protection. There are numerous examples of catalytic applications in various industries for a cleaner production and non-stop research is going on in the field of green chemistry. In this study, the developments in the green chemistry and thereby catalysis technology have been reviewed. Also, an evaluation of the clean production conditions in Turkiye is tried

Algebraic Properties of Qualitative Spatio-Temporal Calculi

Qualitative spatial and temporal reasoning is based on so-called qualitative calculi. Algebraic properties of these calculi have several implications on reasoning algorithms. But what exactly is a qualitative calculus? And to which extent do the qualitative calculi proposed meet these demands? The literature provides various answers to the first question but only few facts about the second. In this paper we identify the minimal requirements to binary spatio-temporal calculi and we discuss the relevance of the according axioms for representation and reasoning. We also analyze existing qualitative calculi and provide a classification involving different notions of a relation algebra.Comment: COSIT 2013 paper including supplementary materia