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Aproximadamente 22 registro(s) hasta el momento: (journal)

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Where has Aristolochia tricaudata (ARISTOLOCHIACEAE) gone? New record of a critically endangered species in Oaxaca, Mexico
Rivera-Hernández,Jaime Ernesto - Samain,Marie-Stéphanie

Formato:	journal article
Enlaces:	During fieldwork in San Juan Teponaxtla, Oaxaca, 3 individuals of Aristolochia tricaudata Lemaire, a very rare species threatened with extinction, were observed with flowers and fruits. Although this species is present in many botanical gardens, fruits have never been observed.…
Fecha:	2011-03-01
Recurso:	SCIELO

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Rapid isotopic changes in groundwater, upper Rio Guanajuato catchment, Mexico
Cortés,Alejandra - Durazo,Jaime - Kralisch,Stefanie

Formato:	journal article
Enlaces:	Significant changes in the isotopic composition of groundwater in the upper catchment of Rio Guanajuato, Mexico, were detected in two independent sets of samples for 3 % of the 1600 high-production wells in the area. Sampling was done in December…
Fecha:	2007-03-01
Recurso:	SCIELO

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The bolide of February 10, 2010: Observations in Hidalgo and Puebla, Mexico
Cordero,Guadalupe - Cervantes-de la Cruz,Karina - Gómez,Eduardo

Formato:	journal article
Enlaces:	On February 10th, 2010, the inhabitant population of some towns near the border between the States of Hidalgo and Puebla, Mexico, heard a strong blast overhead and felt seismic tremors and roof and windows vibration. At Tulancingo, Hidalgo, 25 km…
Fecha:	2011-03-01
Recurso:	SCIELO

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A possible case of Sporadic Aurora in 1843 from Mexico
Vaquero,José Manuel - Gallego,María Cruz - Domínguez-Castro,Fernando

Formato:	journal article
Enlaces:	In recent years, some authors have shown that some auroras can be observed at relatively low latitude when the geomagnetic activity is quiet or moderate. This very special type of aurora is called "sporadic aurora". We present and analyze in…
Fecha:	2013-03-01
Recurso:	SCIELO

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Intracardiac ultrasound-guided percutaneous mitral valvuloplasty
Peña-Duque,Marco Antonio - Zabal-Cerdeira,Carlos - Amado-de León,José Alejandro - García Montes,José Antonio - Martínez-Ríos,Marco Antonio

Formato:	journal article
Enlaces:	Intracardiac echocardiography (ICE) is a relatively new method of ultrasound images useful during cardiac percutaneous interventional procedures. The first human experience with this method was published in 2000 and, since then, several original trials have enrolled this useful method, proving…
Fecha:	2011-03-01
Recurso:	SCIELO

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The ringtail tonguefish, Symphurus ocellaris, a new addition to the marine fish fauna of Mexico (Cynoglossidae, Pleuronectiformes)
van der Heiden,Albert M. - Ruiz-Guerrero,Marcela - Plascencia-González,Héctor G.

Formato:	journal article
Enlaces:	Eleven specimens of the ringtail tonguefish, Symphurus ocellaris Munroe and Robertson, 2005, were obtained from off the coasts of Chiapas and Colima, Mexico. Previously, this species was known only from the 2 type specimens collected off the Pacific coast of…
Fecha:	2011-03-01
Recurso:	SCIELO

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A new species of Metathelazia (Nematoda: Pneumospiruridae) from the lungs of a nine-banded armadillo in Central Mexico
Jiménez,F. Agustín - Rosas-Valdez,Rogelio - Gardner,Scott L.

Formato:	journal article
Enlaces:	Twenty-four worms were collected from the bronchioles in both lungs of a male nine-banded armadillo Dasypus novemcinctus Linnaeus, 1758 captured in Teacalco, Morelos, Mexico. The worms, herein named Metathelazia mexicana n. sp., show a constriction in the esophagus at the…
Fecha:	2013-03-01
Recurso:	SCIELO

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On two Psolidae (Echinodermata: Holothuroidea) from the Gulf of California, Mexico
Massin,Claude - Hendrickx,Michel E.

Formato:	journal article
Enlaces:	Two species of holothuroids of the family Psolidae have been collected in the Gulf of California, Mexico. Psolus diomedeae Ludwig, 1894, a species previously known from the Pacific coast of Mexico and abundant in the Gulf of California was collected…
Fecha:	2013-03-01
Recurso:	SCIELO

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Seven new species of Allorhogas (Hymenoptera: Braconidae: Doryctinae) from Mexico
Martínez,Juan José - Zaldívar-Riverón,Alejandro

Formato:	journal article
Enlaces:	Seven new Mexican species of the gall associated doryctine genus Allorhogas are described, illustrated and molecularly characterized: A. amuzgo sp. nov., A. coccolobae sp. nov., A. crassifemur sp. nov., A. jaliscoensis sp. nov., A. marshi sp. nov., A. parvus sp.…
Fecha:	2013-03-01
Recurso:	SCIELO

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10.

Numerical modeling of Etla Valley aquifer, Oax., Mexico: Evolution and remediation scenarios
Flores-Márquez,E. L. - Martínez-Serrano,R. G. - Chávez,R. E. - Crusillo,Y - Jiménez,G - Campos-Enriquez,O

Formato:	journal article
Enlaces:	Short-term evolution (for 2001, 2005 and 2015) for the shallow aquifer of Etla Valley, Oaxaca, southern Mexico, was simulated based in a 3D hydrological model elaborated from the available geological, geophysical, geochemical, and hydrologic parameters. The numerical simulations were based…
Fecha:	2008-03-01
Recurso:	SCIELO

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11.

Tephrochronological evidence for the late Holocene eruption history of El Chichón volcano, Mexico
Nooren,C. A. M. - Hoek,W.Z. - Tebbens,L. A. - Martin Del Pozzo,A. L.

Formato:	journal article
Enlaces:	Pre-Columbian societies in the Maya Lowlands were repeatedly exposed to tephra-fall from past eruptions of El Chichón volcano, Chiapas, Mexico. Late Holocene tephra layers are well preserved in sediments of the Usumacinta-Grijalva river delta, about 150 km NNE of the…
Fecha:	2009-03-01
Recurso:	SCIELO

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12.

A general model for tectonic control of magmatism: Examples from Long Valley Caldera (USA) and El Chichón (México)
Bursik,M

Formato:	journal article
Enlaces:	The relationship of volcanoes to regional tectonic setting and earthquake dynamics is intimate. We know that eruptions are often triggered by earthquakes, and that volcanoes generally lie along or near major faults or within faulted provinces. It has been generally…
Fecha:	2009-03-01
Recurso:	SCIELO

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13.

Rare-earth element distribution in water from El Chichón Volcano Crater Lake, Chiapas Mexico
Morton-Bermea,O. - Aurora Armienta,M. - Ramos,S.

Formato:	journal article
Enlaces:	This research can be regarded as a pilot study at El Chichón Volcano to assess whether REE distributions can be used as routinely geochemical tracers in the Crater Lake geothermal system. Eighteen lake water samples were collected during 3 field…
Fecha:	2010-03-01
Recurso:	SCIELO

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14.

Looking for asymmetries over the Mexican business cycle
Mejía-Reyes,Pablo - Díaz-Carreño,Miguel Ángel

Formato:	journal article
Enlaces:	The aim of this paper is to evaluate the existence of asymmetries in mean and variance in the dynamics of the main Mexican macroeconomic variables over business cycle regimes. Following the lines of the classical business cycle approach, a battery…
Fecha:	2010-03-01
Recurso:	SCIELO

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15.

Spontaneous rupture of an aneurysm of the sinus of Valsalva into the right atrium, associated with an atrial septal aneurysm
López-Velarde B,Pedro - Avila-Vanzzini,Nydia - López-Velarde Peña,Tatiana - Dabaghi-Richerand,Alejandro - López-Soriano,Fernando - Espinola-Zavaleta,Nilda

Formato:	journal article
Enlaces:	Aneurysms of the sinus of Valsalva (SV) and the atrial septum are a rare association. We report the case of a 28-year-old woman, who was admitted to our department complaining of progressive dyspnea of 10 days of evolution, five hours…
Fecha:	2011-03-01
Recurso:	SCIELO

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16.

Variation in parental investment and relative clutch mass of the spiny-tail iguana, Ctenosaura pectinata (Squamata: Iguanidae) in central México
Castro-Franco,Rubén - Bustos-Zagal,María Guadalupe - Méndez-De la Cruz,Fausto R.

Formato:	journal article
Enlaces:	We measured the length, width, volume, and weight of 871 freshly laid eggs of 28 clutches of Ctenosaura pectinata. The iguanas were obtained from a tropical dry forest area in central Mexico. The relative clutch mass was related positively to…
Fecha:	2011-03-01
Recurso:	SCIELO

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17.

Rediscovering an extraordinary vanishing bug: Llaveia axin axin
Suazo-Ortuño,Ireri - del Val-De Gortari,Ek - Benítez-Malvido,Julieta

Formato:	journal article
Enlaces:	The "aje" (Llaveia axin axin) is a parasitic hemipteran of various tree species in tropical dry forests of Mexico and Guatemala. Females produce fatty extracts used since prehispanic times (i.e., traditional medicine and as raw material to produce handcrafts). However,…
Fecha:	2013-03-01
Recurso:	SCIELO

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18.

Morphology and magnetic survey of the Rivera-Cocos plate boundary of Colima, Mexico
Peláez Gaviria,Juan Ramón - Mortera Gutiérrez,Carlos A. - Bandy,William L. - Michaud,François

Formato:	journal article
Enlaces:	The propagation of the Pacific-Cocos Segment of the East Pacific Rise (EPR-PCS) has significantly altered the plate configuration at the north end of the Middle America Trench. This ridge propagation, the collision of the EPR-PCS with the Middle America Trench,…
Fecha:	2013-03-01
Recurso:	SCIELO

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19.

Myocardial postconditioning: anesthetic considerations
Luna-Ortiz,Pastor - Torres,Juan Carlos - Pastelin,Gustavo - Martínez-Rosas,Martín

Formato:	journal article
Enlaces:	Recently, it has been shown that the heart can be protected against the ischemia-reperfusion injury if brief coronary occlusions are performed just at the beginning of the reperfusion. This procedure has been called postconditioning (PostC). It can also be elicited…
Fecha:	2011-03-01
Recurso:	SCIELO

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20.

Total mercury in terrestrial systems (air-soil-plant-water) at the mining region of San Joaquín, Queretaro, Mexico
Martínez-Trinidad,Sergio - Hernández Silva,Gilberto - Ramírez Islas,Martha Elena - Martínez Reyes,Juventino - Solorio Munguía,Gregorio - Solís Valdez,Sara - García Martínez,Rocío

Formato:	journal article
Enlaces:	Deficient management of cinnabar mining left the San Joaquín region with high concentrations of mercury in its soils (2.4 - 4164 mg kg-1). Numerous cinnabar mines have contributed to the dispersion of mercury into agricultural (0.5 - 314 mg kg-1)…
Fecha:	2013-03-01
Recurso:	SCIELO

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21.

The TIMI risk score for STEMI predicts in-hospital mortality and adverse events in patients without cardiogenic shock undergoing primary angioplasty
González-Pacheco,Héctor - Arias-Mendoza,Alexandra - Álvarez-Sangabriel,Amada - Juárez-Herrera,Úrsulo - Damas,Félix - Eid-Lidt,Guering - Azar-Manzur,Francisco - Martínez-Sánchez,Carlos

Formato:	journal article
Enlaces:	Introduction: Patients with ST elevation acute myocardial infarction (STEMI) comprise a heterogeneous population with respect to the risk for adverse events. Primary percutaneous coronary intervention (PCI) has shown to be better, mainly in high-risk patients. Objective: The purpose of this…
Fecha:	2012-03-01
Recurso:	SCIELO

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22.

Clinical characteristics, process of care and outcomes among Mexican, Hispanic and non-Hispanic white patients presenting with non-ST elevation acute coronary syndromes: Data from RENASICA and CRUSADE registries
Sánchez-Diaz,Carlos Jerjes - García-Badillo,Edgar - Sánchez-Ramírez,Carlos Jerjes - Juárez,Úrsulo - Martínez-Sánchez,Carlos

Formato:	journal article
Enlaces:	Introduction: Data regarding management characteristics of non-ST elevation acute coronary syndromes (NSTE ACS) in Mexican, Hispanic and Non- Hispanic white patients are scarce. Methods: We sought to describe the clinical characteristics, process of care, and outcomes of Mexicans, Hispanics and…
Fecha:	2012-03-01
Recurso:	SCIELO