The historical reconstruction of solar activity is a task of great interest for geophysicists and solar physicists. Historical sunspot observations are a fundamental tool for this task. In this short contribution, we present some historical sunspot observations in Mexico.

Objective: Compare in-hospital outcome in patients with ST-elevation myocardial infarction with right versus left bundle branch block. Methods: RENASICA II, a national mexican registry enrolled 8098 patients with final diagnosis of acute coronary syndrome secondary to ischemic heart disease. In…

Four species of Lachesilla, from Mexico and Guatemala, are here described and illustrated. Together with L. asperiforceps García Aldrete, from Mexico, Guatemala and Nicaragua, they constitute the L. asperiforceps species complex, a diagnosis of which is provided, as well as…

Assuming a linear relationship between maximum length (L) and maximum fault displacement (D) we investigate the effects of displacement component measured, observation level, and fault linkage by using data from the normal faults of the Akal block of the Cantarell…

The geographic distribution of the species of Datura in Mexico was analyzed using numerical analysis of natural populations documented by herbarium specimens. A map of Mexico was divided into 239, 1° x 1° squares (latitude and longitude) which were used…

Sampling with a single bait as a lure is a commonly used practice in studies of necrophilous insect communities. Here, we determined if there were differences in necrophilous insect species richness and abundance when attracted to 4 types of carrion:…

Objective: To describe the design of a protocol of intracoronary autologous transplant of bone marrow-derived stem cells for acute ST-elevation myocardial infarction (STEMI) and to report the safety of the procedure in the first patients included. Methods: The TRACIA study…

Objectives: We sought to analyze exercise-derived mean pulmonary artery pressure (Mpap) - cardiac index (CI) - relationship to expand the concepts regarding its nature and to better identify pulmonary hemodynamic responders to acute oxygen breathing (AOB - 99.5%) in pulmonary…

Hechtia lepidophylla is described and illustrated. A complete description including characters of staminate, pistillate, and fruiting plants is included, with details of growth pattern and ecological characteristics, as well as characters to distinguish it from species with similar vegetative and…

This article analyzes the progress obtained in diminishing poverty and inequality in Mexico during the post-NAFTA years ranging from 1994 to 2007, and how it pertains to the broad critical debate surrounding poverty-gap reduction in the context of regional and…