reliable incidence figures for endemic diseases in many region. It is now known that uropathogenic E. coli contains at least four PAIs inserted into various tRNA sites, countries, this may be only a technicality. ranging in size from 40 kb to 190 kb, encoding diverse Another book with the same title was published in virulence factors such as fimbriae, iron utilization, and 1998, edited by Willi...

In learning to navigate a particular field of science, students are continually fed large chunks of information, more or less organized, and asked to solve problems, but little or no time is spent learning how to ask questions, at least in any formal way. This may just be a pedagogical oversight, but I suspect it reflects the fact that questioning is an inherently subversive activity and deeply...

Cheeger, Goresky, and MacPherson conjectured [CGM] an L2-de Rham theorem: that the intersection cohomology of a projective variety V is naturally isomorphic to the L2cohomology of the incomplete manifold V − Sing V , with metric induced by a projective embedding. The early interest in this conjecture was motivated in large part by the hope that one could then put a Hodge structure on the inters...

1 The Borsuk-Ulam theorem We have seen how combinatorics borrows from probability theory. Another area which has been very beneficial to combinatorics, perhaps even more surprisingly, is topology. We have already seen Brouwer's fixed point theorem and its combinatorial proof. Theorem 1 (Brouwer). For any continuous function f : B n → B n , there is a point x ∈ B n such that f (x) = x. A more po...

A 125 Formulating health policy without a thorough understanding of the implications of the environment's influence on health can be compared to building an airplane without an understanding of basic physics: though it may appear to have all the appropriate parts in the appropriate places, without the underlying engineering required for flight, it will never get off the ground. Or worse, it wil...

Moufang’s theorem states that if Q is a Moufang loop with elements x, y and z such that x ·yz = xy · z, then these three elements generate a subgroup of Q. The paper contains a new proof of this theorem that is shorter and more transparent than the standardly used proof of Bruck. A loop is a binary structure with a unit such that the equations ax = b and ya = b have unique solutions x = a\b and...

editorial Dental malocclusion at the navel of the Xingu river " And whatever is now disclosed to the people, Will surprise everyone not for being exotic, but for having remained concealed Until it was perceived as obvious. " Caetano Veloso, song: " An indian " The feeling of coexisting with and treating a highly prevalent disease of which origin is unknown is unsettling. It reminds us of when h...

Contents Purpose 1.Introduction 1.1. We are all nonmonotonic 1.2. Recalling some features of classical consequence 1.3. Some misunderstandings and a habit to suspend 1.4. Three ways of getting more conclusions out of your premises 2. Using background assumptions 2.1. From classical consequence to pivotal assumptions 2.2. From pivotal assumptions to default assumptions 2.3. Specializations and g...

Background: A community public health programme, 'Breathing Space', aimed to tackle smoking in a low income area in Scotland. This paper draws on the qualitative process evaluation of a community-based initiative 'Breathing Space', which set out to tackle smoking in a low income area of Scotland, in order to explore user perceptions of key factors affecting implementation, and in particular to ...