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Now showing items 1-20 of 26345

Expression of Matrix Metalloproteases by Fibrocytes Possible Role in Migration and Homing

Becerril, C; Ruiz, V; Reyes, S; Selman, M; García-de-Alba, C; García-Alvarez, J; González, Y; Pardo-Cemo, Annie (2010)

Rationale: Fibrocytes are progenitor cells characterized by the simultaneous expression of mesenchymal, monocyte, and hematopoietic stem cell markers. We previously documented their presence in lungs of patients with ...
Culture of Explants from the Sponge Mycale cecilia to Obtain Bioactive Mycalazal-Type Metabolites

Carballo, JL; Yanez, B; Zubia, E; Ortega, MJ; Vega, C (2010)

Natural products with promising biomedical properties have been described from sponges, but the problem of supply is usually a limiting factor for their pharmacological evaluation. Mycale cecilia produces an array of ...
Modeling of the Catalytic Removal of CO and NO in Dry Combustion Gases

Prince, JC; Treviño, C (2010)

Catalytic removal of pollutants in dry combustion gases in a planar stagnation-point flow over a platinum foil is studied using both numerical and analytical tools. The governing equations have been numerically integrated ...
Eutrophication and macroalgal blooms in temperate and tropical coastal waters: nutrient enrichment experiments with Ulva spp.

Teichberg, M; Fox, SE; Olsen, YS; Valiela, I; Martinetto, P; Iribarne, O; Muto, EY; Petti, MAV; Corbisier, TN; Soto-Jimenez, M; Paez-Osuna, F; Castro, P; Freitas, H; Zitelli, A; Cardinaletti, M; Tagliapietra, D (2010)

Receiving coastal waters and estuaries are among the most nutrient-enriched environments on earth, and one of the symptoms of the resulting eutrophication is the proliferation of opportunistic, fast-growing marine seaweeds. ...
Fitting Ranked Linguistic Data with Two-Parameter Functions

Li, WT; Miramontes, P; Cocho, G (2010)

It is well known that many ranked linguistic data can fit well with one-parameter models such as Zipf's law for ranked word frequencies. However, in cases where discrepancies from the one-parameter model occur (these will ...
Early seed fall and seedling emergence: precursors to tropical restoration

Howe, HF; Urincho-Pantaleon, Y; de la Pena-Domene, M; Martínez-Garza, C (2010)

We explore processes of seed immigration and seedling recruitment before an experimental rainforest restoration matures enough to affect either. Twenty-four 30 x 30-m plots were fenced in 12 ha of pasture in 2006. Seeds ...
Interactions among patch area, forest structure and water fluxes in a fog-inundated forest ecosystem in semi-arid Chile

Barbosa, O; Marquet, PA; Bacigalupe, LD; Christie, DA; del-Val, E; Gutierrez, AG; Jones, CG; Weathers, KC; Armesto, JJ (2010)

P>1. The area or size of an ecosystem affects the acquisition, storage and redistribution of energy and matter. Patch size reduction due to natural or anthropogenic habitat loss will not only modify species distribution ...
Jarzynski's equality illustrated by simple examples

Hijar, H; de Zarate, JMO (2010)

The Jarzynski theorem is perhaps the most recently discovered simple general formula in elementary statistical physics. In this paper, written with a pedagogical aim, we illustrate the physical concepts under the Jarzynski ...
Long-period seismicity during magma movement at Volcan de Colima

Varley, NR; Arambula-Mendoza, R; Reyes-Davila, G; Stevenson, J; Harwood, R (2010)

During the period from February to September 2005, Volcan de Colima produced 30 Vulcanian explosions of sufficient magnitude to produce pyroclastic flows of variable size, with a total volume of at least 2.5 x 10(6) m(3). ...
Hypargyrin A, a Hemiacetalic Germacrolide from Viguiera hypargyrea (Asteraceae). Biogenetic Implications and Biological Evaluation

Arellano-Martínez, R; Delgado, G (2010)

A new hemiacetalic germacrolide 6, named hypargyrin A, was isolated from the aerial parts of Viguiera hypargyrea, along with the known compounds (8R, 9R)-beta-caryophyllene epoxide, entkaur-16-en-19-oic acid (1), hispidulin ...
Free form of the Foldy-Wouthuysen transformation in external electromagnetic fields

Murguia, G; Raya, A (2010)

We derive the exact Foldy-Wouthuysen transformation for Dirac fermions in a time-independent external electromagnetic field in the basis of the Ritus eigenfunctions, namely the eigenfunctions of the operator (gamma . Pi)(2), ...
Aqueous solvation of As(OH)(3): A Monte Carlo study with flexible polarizable classical interaction potentials

Vargas, MC; Ramirez-Solis, A; Ortega-Blake, I; Hernández-Cobos, J (2010)

A theoretical study of the hydration of arsenious acid is presented. This study included ab initio calculations and Monte Carlo simulations. The model potentials used for the simulations were ab initio derived and they ...
Phylogeny of the genus Palmanura (Collembola: Neanuridae)

Vargas, JGP; Benito, JCS; García-Barros, E (2010)

In order to assess the phylogenetic structure of the springtail genus Palmanura, as well as to test the monophyly of the tribe Sensillanurini (Neanuridae: Neanurinae), a data matrix of morphological (chaetotactic and other) ...
Microscopic derivation of the Helmholtz force density on a magnetic fluid in an electromagnetic field

Jimenez, JL; Campos, I; López-Marino, MA (2010)

The results obtained by Lai, Suen and Young (Phys Rev A, 25 (1982) 1755) for the Helmholtz force density in a dielectric fluid using a microscopic model are extended to the magnetic case The limitations of tins force density ...
Making Room for New Faces: Evolution, Genomics and the Growth of Bioinformatics

Suarez-Diaz, E (2010)

Genomics poses challenges that are specific to historians of science. Such challenges are not necessarily met by most recent sociologically-oriented approaches This paper argues that historians of genomics can draw some ...
A New Species of Scincella (Squamata: Scincidae) from the Cuatro Cienegas Basin, Coahuila, Mexico

Canseco-Marquez, L; de Oca, ANM; García-Vazquez, UO (2010)

A new species of Scincella, previously confused with S. laterals, Is described from the Cuatro Cienegas Basin, Coahuila, Mexico. The new species differs from all congeners in North and Middle America by possessing two dark, ...
A new combination in the genus Oxyrhynchus (Leguminosae: Phaseolinae)

Delgado-Salinas, A; Estrada, E (2010)

Phylogenetic analyses of the genus Oxyrhynchus and close relatives in the New World subtribe Phaseolinae have established that Vigna populnea is a species of Oxyrhynchus. Thus, a new combination is proposed. The genus ...
checklist, biological notes and distribution of ants (hymenoptera: formicidae) from barranca de metztitlan biosphere reserve, hidalgo, mexico

Hernández, FV; Castaño-Meneses, RG (2010)

A checklist of ants recorded from the Barranca de Metztitlan Biosphere Reserve, an arid zone in Hidalgo State, Mexico, is presented. Some remarks about their biology, local and regional geographic distribution are given. ...
PROPER ACTIONS ON TOPOLOGICAL GROUPS: APPLICATIONS TO QUOTIENT SPACES

Antonyan, SA (2010)

Let X be a Hausdorff topological group and G a locally compact subgroup of X. We show that the natural action of G on X is proper in the sense of R. Palais. This is applied to prove that there exists a closed set F subset ...
ASPIDOSCELIS SEXLINEATA (SAURIA: TEIIDAE) IN MEXICO: DISTRIBUTION, HABITAT, MORPHOLOGY, AND TAXONOMY

Perez-Ramos, E; de Oca, ANM; Vargas-Contreras, JA; Cordes, JE; Paulissen, MA; Walker, JM (2010)

We report on Aspidoscelis sexlineata (six-lined racerunner) from the but known sites of occurrence in Mexico, one being a southward range extension of 74.3 km For the species. These sites are situated in the extreme eastern ...

Now showing items 1-20 of 26345

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