In response to concerns over the translocation of P from soils P-sensitive water bodies, there is high demand for developing simple indicators evaluating a soil’s risk releasing into solution. Many studies have shown that degree soil phosphorus saturation (DPS), calculated as ratio concentration sorption capacity (PSC), good predictor in this study we compared four different DPS indices how wel...

While the Local Density Approximation LDA+U method is well established for Mott insualtors with well localized orbitals, its application to weakly correlated metals is questionable. By extending the Stoner approach to LDA+U, we show that LDA+U enhances the Stoner factor, while reducing the density of states. The most important correlation effects in metals, fluctuation induced mass renormalizat...

We discuss the security of Message Authentication Code (MAC) schemes from the viewpoint of differential attack, and propose an attack that is effective against DES-MAC and FEAL-MAC. The attack derives the secret authentication key in the chosen plaintext scenario. For example, DES(8-round)-MAC can be broken with 2 pairs of plaintext, while FEAL8-MAC can be broken with 2 pairs. The proposed atta...

2 Motivation This paper presents "FD~g, a typed feal, ure-bascd rein'csent, el;ion language att(l ild'erence system. Type definitions in TDL consis~ of type and feature constraints over the Imolean cmme(Mves. TD£ supports openand closedworM reasoning over types and allows for par|;itions and iueompal;i[)le I.ypes. Working with l)artially as well as with lhlly expanded types is possible. E[lieie...

The use of Fe-Al intermetallic compound coatings has been investigated in order to improve the tribological behaviour of carbon tool steel. The coatings were formed by a pack cementation process and subsequently diffusion annealing at 900˚C in an argon controlled atmosphere. The optimum diffusion time was selected on the basis of optimum thickness and tribological behaviour.&#10The microstructu...