Introduction to Diffraction and low x Dynamics

An attempt is made to illustrate the relation between low x process es and diffraction. ep scattering provides a unique laboratory, a single hadronic target probed by a point like lepton, where one can try to understand diffraction in terms of a colourless exchange in QCD. Low x processes eventually involve aspects of QCD which cannot be described perturbatively. The HERA inclusive measurements are examined in this respect and compared to results of the Tevatron.Comment: 8 pages, 7 figures in eps. talk given at XXXI International Symposium on Multiparticle Dynamics, Sep. 1-7, 2001, Datong China See http://ismd31 .ccnu.edu.cn

Nature Conservation Advisory Service for Farmers - A New Approach to Integrate Nature Conservation on Farm Level

From a historical point of view, it is obvious that agriculture is responsible for building the cultural landscapes of Europe. In a process of hundreds of years, the natural landscapes had been replaced by cultural ones. Of course, agriculture led to extinction of at least some mammal species, but replacing the forests by settlements with pastures, meadows, orchards, arable fields and structural elements increased the number of plant and animal species in the landscape. Several species were introduced from other continents

Commentary

Elsen comments on articles by Deborah DeMott and James Cox. He agrees with them that the rules governing conduct are often different from the rules written in compliance programs and as part of codes of conduct