Both international collaborations, DELPHI and P. AUGER, are covering the finest and most interesting research fields in physics in general and - more specifically - particle and astroparticle physics. Regarding the financing, the participating nations (EU countries, USA, Japan and others) are placing this and related research fields in the highest/top priority, since this research is hitting the edge of our current understanding of particle interactions and their consequences on the development of the Universe. An evidence for the importance of expanding human knowledge in this field can be also found in the document "From quarks to Cosmos: Eleven science questions for new century" (http://www.nationalacademies.org/bpa/projects/cpu/reports) published by the National research council of the American academy of sciences, recognizing among seven other urging open questions, also the need for extensive research of cosmic rays at extremely high energies, explicitely distinguishing P. AUGER experiment as a forefront of such endeavors. Highly cited accomplishments and research findings of these two projects have been published in prominent scientific journals and presented on many international conferences. The stringent requirements - large extent of the detector (3000 km2), 20 years of flawless operation, wireless trigger system and communication, automatic operation with control and monitoring from remote institutions - are making the construction of the Pierre Auger Observatory an unexceptionally vigorous technical challange. The flourescence detectors and systems for atmospheric monitoring are custom designes of the project, as well as open-source based data acquisition and data analysis systems. Structural analyses with synchrotron radiation x-ray absorption methods EXAFS and XANES provided some key information for understanding of new materials and their synthesis routes. We have collaborated with several Slovene and foreign laboratories for material sciences, atomic physics, chemistry, pharmacology, environmental sciences and cultural heritage (ESRF, Grenoble, HASYLAB, Hamburg, LURE, Orsay, RWTH Aachen, NemĨija; LUC, Belgium University of Exeter,UK; Institute des Sciences de la Matiere et du Rayonnement, Caen, France, Institute de Recherches sur la Catalyse CNRS, Villeurbane, France, Institute of Electronic, Materials Technology, Warszawa;University of Ljubljana, University of Maribor, Institut Jozef Stefan, Ljubljana; Institute for Chemistry, Ljubljana; National and University Library). We are memebers of EU Center of excelence: Center for advanced processing, technologies and materials. In studies of catalytic molecular sieves, we showed the correlation between the site of incorporation of metal cations into the crystal structure of the sieve and its catalytic properties. We determined more efficient synthetic sol-gel routes for feroelectric PZT thin films which improved their homogeneity and electric properties. We determined the molecular structure of some farmacologicaly important macromolecules (Hyaluronates, ciprofloxacin, cisplatin in liposomes). We found the atomic structure and determined the temperatures of phase transitions in Ni/Al and Fe/Al thin film coatings, which are sinthesized by ion beam mixing at significantly lower temperatures than by standard procedures. We examined the machanism of pesticide degradation by irradiation with x-rays and obtained results important for environmental protection and conservation of clutural heritage. We have contributed also some important results in basic research on the field of intra-atomic effects acompanying photoeffect in inner atomic shells, which elucidate the electronic crrelations in bound and free atoms. The results were aplied to improve x-ray absorption method EXAFS, for which exact atomic absorption backgrounds were determined for a series of elements (Zn to Sr, K, Cs, Hg). These backgrounds remove systematic errors in structural analyses with EX...