We give an elementary proof of a result of Katz relating invariants of linked surfaces in P4. A similar result is proved for volumes in P5. Then we try to connect the geometry of the curve D = S ∩ S′ to the properties of the linked surfaces, for example we show that if D is a complete intersection, then one of the surfaces is a complete intersection too.

On a weighted graph G, a total acquisition move transfers weight from a vertex u to a neighbor v provided that the weight on v is at least as much as the weight on u. Starting with all vertices having weight 1, the total acquisition number of G, denoted at(G), is the minimum number of vertices with positive weight after a sequence of total acquisition moves. In [D. Lampert and P. Slater, Congr....

Proprotein convertase subtilisin/kexin type 9 (PCSK9) has been recently identified as a new useful target for hypercholesterolemia treatment. This work demonstrates that natural peptides, deriving from the hydrolysis of lupin protein and absorbable at intestinal level, are able to inhibit the protein-protein interaction between PCSK9 and the low density lipoprotein receptor (LDLR). In order to ...

The competitive fuzzy classifier operates on the set of four features extracted from the 3x3 neighborhood of each pixel. These features are the magnitudes of differences between that pixel and its neighboring pixels on four directions. They are input into the competitive fuzzy classifier inputs that connect to five fuzzy set membership functions that represent “white background” or one of the f...

It has long been thought that clonal deletion efficiently removes almost all self-specific T cells from the peripheral repertoire. We found that self-peptide MHC-specific CD8(+) T cells in the blood of healthy humans were present in frequencies similar to those specific for non-self antigens. For the Y chromosome-encoded SMCY antigen, self-specific T cells exhibited only a 3-fold lower average ...

We present a systematic study of numerical accuracy of various forms of molecular caps that are employed in a recently developed molecular fractionation scheme for full quantum mechanical computation of protein-molecule interaction energy. A previously studied pentapeptide (Gly-Ser-Ala-Asp-Val) or P5 interacting with a water molecule is used as a benchmark system for numerical testing. One-dime...

The specific recognition of foreign peptide bound to the major histocompatibility complex (MHC) molecule by T-cell receptor (TCR) leads to T-cell activation. We found that analogue peptides containing single amino acid substitutions at the third amino acid position (p3), p5, p7 and p8 of the index peptide (YWALEAAAD) induced different response patterns of T cell clones specific for the index pe...

This paper focuses on the political economy of policy reform in post-socialist countries. It investigates the impact of institutions on economic transformation processes and seeks to develop and empirically test a concept of governance that will strengthen policy reforms and make them sustainable. By arguing that effective policy reforms require an adequate politico-institutional foundation, th...

1. The influence of the protein content of the diet on glucose homeostasis was studied in the rat. Rats of 28 d of age received ad lib. a control diet containing (g/kg) 150 protein (P15), or a diet containing 50 protein (P5) or 450 protein (P45). Since P5 rats spontaneously reduced their food intake, a fourth group of rats (P25) received the same amount of energy as P5 rats and the same amount ...