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Search Results: 1 - 10 of 22920 matches for " Francisco Monserrat; Candia-Plata "
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Mutaciones asociadas con resistencia a rifampicina o isoniazida en aislamientos clínicos de M. tuberculosis de Sonora, México
Bolado-Martínez,Enrique; Pérez-Mendoza,Ansix; Alegría-Morquecho,Francisco Monserrat; Candia-Plata,María del Carmen; Aguayo-Verdugo,María del Rosario; álvarez-Hernández,Gerardo;
Salud Pública de México , 2012, DOI: 10.1590/S0036-36342012000200013
Abstract: objective: to perform the analysis of specific regions of the major genes associated with resistance to isoniazid or rifampin. materials and methods: twenty two m. tuberculosis strains, isolated from human samples obtained in sonora, mexico. specific primers for hotspots of the rpob, katg, inha genes and the ahpc-oxyr intergenic region were used. the purified pcr products were sequenced. results: mutations in the promoter of inha, the ahpc-oxyr region, and codon 315 of katg and in 451 or 456 codons of rpob, were identified. conclusions: detection of mutations not previously reported requires further genotypic analysis of mycobacterium tuberculosis isolates in sonora.
Codificación geométrica y análisis de conglomerados para evaluar el control metabólico de pacientes con diabetes mellitus tipo 2
Rascón-Pacheco,Ramón Alberto; Candia-Plata,Maria del Carmen; Rivera-Icedo,Blanca Margarita; Romero-Arredondo,María Elena; Brito-Zurita,Olga Rosa; Guerrero-Romero,Fernando;
Revista Panamericana de Salud Pública , 2010, DOI: 10.1590/S1020-49892010000400006
Abstract: objective: determine the frequency of combinations of higher-than-normal metabolic control parameters, using geometric coding and hierarchical cluster analysis, in patients with type 2 diabetes (dm2) methodology: a descriptive cross-sectional study was conducted in mexico to assess a group of 1 051 patients with dm2. the inclusion criteria were to have one or more of the following values: fasting glucose of 130 mg/dl, total cholesterol of 240 mg/dl, total triglycerides of 200 mg/dl, body mass index of 27 kg/m2, and systolic blood pressure higher than 130 mmhg or diastolic blood pressure higher than 85 mmhg. through geometric coding, the frequencies of all combinations were obtained. cluster analysis was used to determine similarities among the combinations. results: using the proposed instrument, it was observed that the paired combinations with the highest number of subjects were hyperglycemia-hypertriglyceridemia (7.3%) and hyperglycemia-hypercholesterolemia (3.6%). the most frequent polycombinations were hyperglycemia-hypercholesterolemia-hypertriglyceridemia (13.2%) and hyperglycemia-hypertriglyceridemia-hypercholesterolemia-hypertension (10.5%). conclusions: geometric coding and cluster analysis could become a suitable instrument for assessing the metabolic control of patients with dm2, as well as for identifying parameters that will help improve their monitoring and treatment.
Fibers of pencils of curves on smooth surfaces
Francisco Monserrat
Mathematics , 2006,
Abstract: Let $X$ be a smooth projective surface such that linear and numerical equivalence of divisors on $X$ coincide and let $\sigma\subseteq |D|$ be a linear pencil on $X$ with integral general fibers. A fiber of $\sigma$ will be called special if either it is not integral or it has non-generic multiplicity at some of the base points (including the infinitely near ones) of the pencil. In this note we provide an algorithm to compute the integral components of the special fibers of $\sigma$.
Lins Neto's examples of foliations and the Mori cone of blow-ups of $P^2$
Francisco Monserrat
Mathematics , 2009, DOI: 10.1112/blms/bdq111
Abstract: We use a family of algebraic foliations given by A. Lins Neto to provide new evidences to a conjecture, related to the Harbourne-Hirschowitz's one and implying the Nagata's conjecture, which concerns the structure of the Mori cone of blow-ups of $\mathbb{P}^2$ at very general points.
The Poincaré Problem, algebraic integrability and dicritical divisors
Carlos Galindo,Francisco Monserrat
Mathematics , 2011,
Abstract: We solve the Poincar\'e problem for plane foliations with only one dicritical divisor. Moreover, in this case, we give an algorithm that decides whether a foliation has a rational first integral and computes it in the affirmative case. We also provide an algorithm to compute a rational first integral of prefixed genus $g\neq 1$ of any type of plane foliation $\cf$. When the number of dicritical divisors dic$(\cf)$ is larger than two, this algorithm depends on suitable families of invariant curves. When dic$(\cf) = 2$, it proves that the degree of the rational first integral can be bounded only in terms of $g$, the degree of $\cf$ and the local analytic type of the dicritical singularities of $\cf$.
The Poincare series of multiplier ideals of a simple complete ideal in a local ring of a smooth surface
Carlos Galindo,Francisco Monserrat
Mathematics , 2008,
Abstract: For a simple complete ideal $\wp$ of a local ring at a closed point on a smooth complex algebraic surface, we introduce an algebraic object, named Poincar\'e series $P_{\wp}$, that gathers in an unified way the jumping numbers and the dimensions of the vector space quotients given by consecutive multiplier ideals attached to $\wp$. This paper is devoted to prove that $P_{\wp}$ is a rational function giving an explicit expression for it.
The Abhyankar-Moh theorem for plane valuations at infinity
Carlos Galindo,Francisco Monserrat
Mathematics , 2009,
Abstract: We introduce the class of plane valuations at infinity and prove an analogue to the Abhyankar-Moh (semigroup) Theorem for it.
The cone of curves and the Cox ring of rational surfaces given by divisorial valuations
Carlos Galindo,Francisco Monserrat
Mathematics , 2014,
Abstract: We consider surfaces $X$ defined by plane divisorial valuations $\nu$ of the quotient field of the local ring $R$ at a closed point $p$ of the projective plane $\mathbb{P}^2$ over an arbitrary algebraically closed field $k$ and centered at $R$. We prove that the regularity of the cone of curves of $X$ is equivalent to the fact that $\nu$ is non positive on ${\mathcal O}_{\mathbb{P}^2}(\mathbb{P}^2\setminus L)$, where $L$ is a certain line containing $p$. Under these conditions, we characterize when the characteristic cone of $X$ is closed and its Cox ring finitely generated. Equivalent conditions to the fact that $\nu$ is negative on ${\mathcal O}_{\mathbb{P}^2}(\mathbb{P}^2\setminus L) \setminus k$ are also given.
Francisco Piedrahíta Plata
Estudios Gerenciales , 1999,
On the Classification of Exceptional Planar Functions over $\mathbb{F}_{p}$
Fernando Hernando,Gary McGuire,Francisco Monserrat
Mathematics , 2013,
Abstract: We will present many strong partial results towards a classification of exceptional planar/PN monomial functions on finite fields. The techniques we use are the Weil bound, Bezout's theorem, and Bertini's theorem.
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