A new unusual Uropodina mite (Uroobovella vazquezae sp. nov.) is found in the tropical part of Mexico. The new species is easy to separate from the other known Uroobovella species on the basis of the cavities on dorsal and ventral…

The objective of this paper is to present a model to design effective Production Improvement Programs (PIP) in order to contribute in the solution of the problematic situations generally faced by the Mexican manufacturing micro, small and medium-sized enterprises (M-SME).…

The tree known as Indian lavender (Bursera delpechiana, Burseraceae) is a source of linalool. it was introduced to India from Mexico at the beginning of the 20th century for the exploitation of its essential oil. Its origin from Mexico was…

Hohenbergia mesoamericana I. Ramírez, Carnevali et Cetzal is proposed as new, described, and illustrated. Because the genus was previously known only from the Antilles, Colombia, Venezuela, and Brazil, this new species represents the first record of Hohenbergia for Mexico and…

OBJECTIVE: To assess the association between body mass index (BMI) and the prevalence of psychiatric disorders among Mexico City adolescents. MATERIAL AND METHODS: Household survey of 3005 adolescents aged 12 to 17 residing in Mexico City in 2005 (response rate…

A study on the distribution of the mosquitoes of Quintana Roo State of México was carried out by collecting immature and adult stages during September and October 2006. The collections were made from different locations in the three physiogeographical provinces…

With the aim of assessing the extent of geographical rarity of Mexican Cactaceae, we calculated the distribution size (area of occupancy) of 142 species from the Chihuahuan Desert. In addition, using 2 variables (number of localities and range size), we…

Large complex impact craters form by collapse from initial excavation stage of a deep narrow bowl-shaped transient cavity. Fracturing and shattering of solids with finite tensile shear limits occur related to shock-induced damage of target material, with fracturing and fragmentation…

A structural model of the Chicxulub crater is derived from aeromagnetic anomaly modeling, borehole information and magnetic mineral data. Magnetic susceptibility measurements from borehole cores and samples in the crater show that suevite-like breccias have a variable strong magnetic signature,…

There is a good consensus about the age of the most primitive materials in the Solar System represented by carbonaceous chondrites. From these, a canonical age of the Solar System of 4567 Ma has been defined. Nevertheless, the age of…