Thromboembolic diseases are increasing worldwide and always require anticoagulant therapy.We still boys boardshorts need safer and more secure antithrombotic drugs than those presently available.Sulfated polysaccharides from marine organisms may constitute a new source for the development of such drugs.Investigation of these compounds usually attem

Abstract Boundary conditions for a massless Dirac fermion in 2+1 dimensions where the space is a half-plane are discussed in detail.It is argued that linear boundary conditions that leave the Hamiltonian Hermitian generically break C P and T symmetries as well as Lorentz and conformal symmetry.We show that there is essentially one special case wher