BACKGROUND Emergence of human fascioliasis prompted a worldwide control initiative including a pilot study in a few countries. Two hyperendemic areas were chosen: Huacullani, Northern Altiplano, Bolivia, representing the Altiplanic transmission pattern with high prevalences and intensities; Cajamarca valley, Peru, representing the valley pattern with high prevalences but low intensities. Coprol...

Memory and dementia are historical ideas that preceded the development of modern neuroscientific, psychogeriatric and medical approaches to aging and cognitive impairment. This article explores the value of such historical ideas in order to understand the discourses and metaphors by which Western thought has individualized memory as the guarantor of rational personhood, while at the same, treat...

It is generally believed (1-3) that T lymphocytes recognize antigen in association with products of the major histocompatibility complex (MHC).I If we consider T cell responsiveness in terms of a recognition unit, it would be made up of three components: antigen, a T cell receptor (s), and a surface Ia molecule on an antigenpresenting cell (APC). In such a model, lack of responsiveness (Ir gene...

We show that any two-dimensional odd dihedral representation ρ over a finite field of characteristic p > 0 of the absolute Galois group of the rational numbers can be obtained from a Katz modular form of level N , character 2 and weight k, where N is the conductor, 2 is the prime-to-p part of the determinant and k is the so-called minimal weight of ρ. In particular, k = 1 if and only if ρ is un...

A conjecture connected with quantum physics led N. Katz to discover some amazing mixed character sum identities over a field of q elements, where q is a power of a prime p > 3. His proof required deep algebro-geometric techniques, and he expressed interest in finding a more straightforward direct proof. The first author recently gave such a proof of his identities when q ≡ 1 (mod 4), and this p...

(a) Fix an encryption scheme Π for messages of length `(n) and an adversaryA, and consider the following experiment BWA,Π(n): i. A random key k ← {0, 1}n and message m ← {0, 1}`(n) are chosen. ii. A is given the ciphertext C ← Enck(m). iii. A outputs a pair (i, b), with i ∈ {1, . . . , `(n)} and b ∈ {0, 1}. The output of the experiment is 1 iff b = mi, where mi denotes the ith bit of m. We say ...

True science recognizes no boundaries and it is best exemplified by the life of Sir Bernard Katz, an ideal role model for a generation of physiologists and pharmacologists and who was instrumental in the " Quantum " jump in the knowledge of synaptic physiology. Germany on 26th March 1911. As a child till 6 years, Bernard Katz was a citizen of Russia but became stateless because of the Russian R...

We prove that a nonlinear version of the Grothendieck-Katz conjecture (essentially in the form given by Ekhedahl, Shepherd-Barron and Taylor) is equivalent to the original Grothendieck-Katz conjecture together with a certain differential algebraic geometric/model-theoretic statement: a type over C(t) with “p-curvature 0 for almost all p” is nonorthogonal to the constants.

Hookworms infect more than 10% of the world's population, but current diagnostic tools have drawbacks. Our objective was to compare the diagnostic performance of three methods (Kato-Katz, ether concentration and FLOTAC techniques) for hookworm diagnosis. Stool samples were obtained from 102 schoolchildren in Côte d'Ivoire. First, a duplicate 41.7mg Kato-Katz thick smear was prepared. Next, a sm...

Let F be a totally real field with ring of integers O and p be an odd prime unramified in F . Let p be a prime above p. We prove that a mod p Hilbert modular form associated to F is determined by its restriction to the partial Serre-Tate deformation space Ĝm ⊗ Op (p-rigidity). Let K/F be an imaginary quadratic CM extension such that each prime of F above p splits in K and λ a Hecke character of...