Svensk sammanfattning 5/6 Abbreviations 7 List of papers / Statement of responsibility 8/9 Table of contents 10

We construct a pair of non-commutative rank 8 association schemes from 3 non-symmetric scheme. For the pair, two have same character table but different Frobenius-Schur indicators. This situation is similar to dihedral group and quaternion order 8. also determine structures adjacency algebras them over rational number field.

............................................................................................................................ 2 ACKNOWLEDGEMENTS .................................................................................................... 3 TABLE OF CONTENTS ........................................................................................................ 4 LIST OF FIGURES ............

.................................................................................................................. 1 Zusammenfassung .................................................................................................. 2 Introduction ............................................................................................................ 4 Cell polarity ............................

We introduce the simple parametrization for the space of codons (triples of nucleotides) by 8 × 8 table. This table (which we call the dyadic plane) possesses the natural 2–adic ultrametric. We show that after this parametrization the genetic code will be a locally constant map of the simple form. The local constancy of this map will describe degeneracy of the genetic code. The map of the genet...

Introduction....................................................................................................................................2 Clostridium difficile — Biology and Pathogenesis.........................................................................2 Biology............................................................................................................................

.......................................................................................................................................... 2 Introduction .................................................................................................................................... 2 Procedures ....................................................................................................

Table of

.................................................................................................................................................II TABLE OF CONTENTS........................................................................................................................... III LIST OF FIGURES AND TABLES ................................................................................