The effect of the rhg1 gene on equilibrium population densities (E) and reproduction factors (Rf) of Heterodera glycines was studied by comparing the nematode population development on two near-isogenic soybean lines (NIL), differing at the rhg1 locus. The NIL were inoculated with a series of initial egg densities (Pi) in the greenhouse. The relationships between final population densities (Pf ...

The seven geometries H , S , H × R , S × R , PSL2(R ) , Nil and Sol of the Thurston’s geometrization program are proved to originate naturally from singularization morphisms and versal deformations on euclidean 3 -manifolds generated in the frame of the Langlands global program. The Poincare conjecture for a 3 -manifold appears as a particular case of this new approach of the Thurston’s program.

We show that if M is an orientable 4-dimensional infrasolvmanifold and either β = β1(M ;Q) ≥ 2 or M is a Sol 0or a Sol m,n -manifold (with m 6= n) then M is parallelizable. There are non-parallelizable examples with β = 1 for each of the other solvable Lie geometries E, Nil, Sol 1, Nil 3×E1 and Sol3×E1. We also determine which non-orientable flat 4-manifolds have a Pinor Pin-structure, and cons...

If M is a closed Nil geometry 3-manifold then π 1 (M) is almost convex with respect to a fairly simple " geometric " generating set. If G is a central extension or a Z extension of a word hyperbolic group, then G is also almost convex with respect to some generating set. Combining these with previously known results shows that if M is a closed 3-manifold with one of Thurston's eight geometries,...

Pricing schemes for Internet services have turned out to be of crucial influence for the competitiveness of Internet Service Providers (ISP). Despite of this urgent demand, there is still no standard tariff scheme that solves the so-called “feasibility problem”, i.e. ensures simultaneously technical feasibility, economic efficiency and user acceptance. This paper investigates the reason for the...

.Name of patient Mali 0, age 30, sex female, caste or class Burmese, occupation bazaar seller, result cured, date of admission 23rd September, 1913, date of discharge 6th November, 1913. History.?Married for 15 years, number of pregnancies, nil; number of children nil; number ot miscarriages, nil; date of last confinement, nil ; date of last miscarriage, nil; date of last menstruation, three da...