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Search Results: 1 - 10 of 191336 matches for " G. Montero "
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Current knowledge on the Central America historical seismicity: an analysisof recent catalogues
W. Montero,G. Peraldo
Annals of Geophysics , 2004, DOI: 10.4401/ag-3314
Abstract: Historical seismicity studies in Central America have increased since 1980. Currently, there is a well-organized regional digital catalogue database structured according to modern techniques. It contains more than 17 000 earthquakes which occurred between 1520 and 1992. A regional tsunami catalogue is also available. The historical seismicity research included a more complete earthquake documentation obtained from foreign and Central American depositories. New intensity data point estimates and isoseismal maps allows among others, macroseismic magnitude calculations and seismogenic source determinations, for many pre-1900 earthquakes. Future trends in Central America historical seismicity research are discussed.
Jürgen Habermas: Religion, Cultural Diversity and Publicity  [PDF]
Paula Montero
Advances in Anthropology (AA) , 2014, DOI: 10.4236/aa.2014.43022
Abstract:

The aim of this essay is to reflexively consider the particular way in which Jürgen Habermas faces some theoretical challenges that are particularly interesting to contemporary anthropological thought, i.e., the issue of cultural translation and the presence of religion in the public sphere.

Análisis crítico de un artículo:El estudio ALLHAT: Diuréticos tipo tiazidas serían el fármaco de elección para iniciar tratamiento en hipertensión arterial
Rada G,Gabriel; Montero L,Joaquín;
Revista médica de Chile , 2004, DOI: 10.4067/S0034-98872004000400017
Abstract: context: antihypertensive therapy is well established to reduce hypertension related morbidity and mortality, but the optimal first step therapy is unknown. objective: to determine whether treatment with a calcium channel blocker or an angiotensin converting enzyme inhibitor lowers the incidence of coronary heart disease (chd) or other cardiovascular disease (cvd) events vs treatment with a diuretic. design: the antihypertensive and lipid lowering treatment to prevent heart attack trial (allhat), a randomized, double blind, active controlled clinical trial conducted from february 1994 through march 2002. setting and participants: a total of 33357 participants aged 55 years or older with hypertension and at least 1 other chd risk factor from 623 north american centers. interventions: participants were randomly assigned to receive chlorthalidone, 12.5 to 25 mg/d (n = 15255); amlodipine, 2.5 to 10 mg/d (n = 9048); or lisinopril, 10 to 40 mg/d (n = 9054) for planned follow up of approximately 4 to 8 years. main outcome measures: the primary outcome was combined fatal chd or nonfatal myocardial infarction, analyzed by intent to treat. secondary outcomes were all cause mortality, stroke, combined chd (primary outcome, coronary revascularization, or angina with hospitalization), and combined cvd (combined chd, stroke, treated angina without hospitalization, heart failure [hf], and peripheral arterial disease). results: mean follow up was 4.9 years. the primary outcome occurred in 2956 participants, with no difference between treatments. compared with chlorthalidone (6 years rate, 11.5%), the relative risks (rrs) were 0.98 (95% ci, 0.90-1.07) for amlodipine (6 years rate, 11.3%) and 0.99 (95% ci, 0.91-1.08) for lisinopril (6 years rate, 11.4%). likewise, all cause mortality did not differ between groups. five years systolic blood pressures were significantly higher in the amlodipine (0.8 mm hg, p =.03) and lisinopril (2 mm hg, p <.001) groups compared with chlorthalidone, a
Análisis crítico de un artículo:El estudio ALLHAT: Diuréticos tipo tiazidas serían el fármaco de elección para iniciar tratamiento en hipertensión arterial The antihypertensive and lipid lowering treatment to prevent heart attack: Major outcomes in high risk hypertensive patients randomized to angiotensin-converting enzyme inhibitor or calcium channel blocker vs diuretic: The Antihypertensive and Lipid Lowering Treatment to Prevent Heart Attack Trial (ALLHAT). JAMA 2002; 288: 2981-98
Gabriel Rada G,Joaquín Montero L
Revista médica de Chile , 2004,
Abstract: Context: Antihypertensive therapy is well established to reduce hypertension related morbidity and mortality, but the optimal first step therapy is unknown. OBJECTIVE: To determine whether treatment with a calcium channel blocker or an angiotensin converting enzyme inhibitor lowers the incidence of coronary heart disease (CHD) or other cardiovascular disease (CVD) events vs treatment with a diuretic. DESIGN: The Antihypertensive and Lipid Lowering Treatment to Prevent Heart Attack Trial (ALLHAT), a randomized, double blind, active controlled clinical trial conducted from February 1994 through March 2002. Setting and participants: A total of 33357 participants aged 55 years or older with hypertension and at least 1 other CHD risk factor from 623 North American centers. INTERVENTIONS: Participants were randomly assigned to receive chlorthalidone, 12.5 to 25 mg/d (n = 15255); amlodipine, 2.5 to 10 mg/d (n = 9048); or lisinopril, 10 to 40 mg/d (n = 9054) for planned follow up of approximately 4 to 8 years. Main outcome measures: The primary outcome was combined fatal CHD or nonfatal myocardial infarction, analyzed by intent to treat. Secondary outcomes were all cause mortality, stroke, combined CHD (primary outcome, coronary revascularization, or angina with hospitalization), and combined CVD (combined CHD, stroke, treated angina without hospitalization, heart failure [HF], and peripheral arterial disease). Results: Mean follow up was 4.9 years. The primary outcome occurred in 2956 participants, with no difference between treatments. Compared with chlorthalidone (6 years rate, 11.5%), the relative risks (RRs) were 0.98 (95% CI, 0.90-1.07) for amlodipine (6 years rate, 11.3%) and 0.99 (95% CI, 0.91-1.08) for lisinopril (6 years rate, 11.4%). Likewise, all cause mortality did not differ between groups. Five years systolic blood pressures were significantly higher in the amlodipine (0.8 mm Hg, P =.03) and lisinopril (2 mm Hg, P <.001) groups compared with chlorthalidone, and 5 years diastolic blood pressure was significantly lower with amlodipine (0.8 mm Hg, P <.001). For amlodipine vs chlorthalidone, secondary outcomes were similar except for a higher 6 years rate of HF with amlodipine (10.2% vs 7.7%; RR, 1.38; 95% CI, 1.25-1.52). For lisinopril vs chlorthalidone, lisinopril had higher 6 years rates of combined CVD (33.3% vs 30.9%; RR, 1.10; 95% CI, 1.05-1.16); stroke (6.3% vs 5.6%; RR, 1.15; 95% CI, 1.02-1.30); and HF (8.7% vs 7.7%; RR, 1.19; 95% CI, 1.07-1.31). Conclusion: Thiazide type diuretics are superior in preventing 1 or more major forms of CVD and a
Clasificación y descripción de las metodologías de investigación en Psicología
Ignacio Montero,Orfelio G. León
International Journal of Clinical and Health Psychology , 2002,
Abstract: En este trabajo se presenta un sistema de clasificación de las diferentes metodologías de investigación actualmente utilizadas en Psicología. Dicho sistema se basa en el tipo de plan de investigación que se utiliza en cada caso. El sistema se compone de nueve grandes categorías. La primera está compuesta por los estudios teóricos, sin datos empíricos. En segundo lugar, se clasifican los estudios descriptivos mediante observación. En tercer lugar, los estudios descriptivos mediante encuesta. En cuarto lugar, los estudios cualitativos. Los experimentos constituyen la quinta categoría. La sexta está compuesta por los cuasi experimentos. Los estudios ex post facto constituyen la séptima. La octava se constituye con los experimentos de caso único y la novena, y última, está compuesta por los estudios instrumentales. Se presentan las características fundamentales de cada categoría, así como sus posibles variantes subcategorías del sistema de clasificación- y una investigación publicada de cada tipo, a modo de ejemplo
Sistema de clasificación del método en los informes de investigación en Psicología
Ignacio Montero,Orfelio G. León
International Journal of Clinical and Health Psychology , 2005,
Abstract: En este trabajo se revisa y amplía un sistema de clasificación de las metodologías de investigación en Psicología previamente publicado por los autores en esta misma revista en el a o 2002. Se argumentan las ventajas de su utilización y se advierte sobre los posibles inconvenientes. El sistema está basado en la clasificación del tipo de plan de investigación que se utiliza en cada caso. En un primer nivel, se compone de nueve grandes categorías: 1) estudios teóricos, 2) estudios descriptivos mediante observación, 3) estudios descriptivos mediante encuesta, 4) estudios cualitativos, 5) experimentos, 6) cuasi experimentos, 7) estudios ex post facto , 8) experimentos de caso único y 9) estudios instrumentales. Se presentan las características más importantes de cada tipo de estudio y, dentro de cada tipo, las claves que permiten identificar cada una de sus posibles variantes que constituyen las subcategorías del sistema de clasificación- ilustrando con investigaciones publicadas cada uno de los subtipos de investigación a los que da lugar el sistema. El sistema de clasificación aquí propuesto se utilizará como modelo para los informes de investigación que se envíen a esta revista.
A guide for naming research studies in Psychology
Ignacio Montero,Orfelio G. León
International Journal of Clinical and Health Psychology , 2007,
Abstract: En este trabajo se revisa y amplía el sistema de clasificación de las metodologías de investigación en Psicología previamente publicado por los autores. Se establecen pautas para guiar su utilización y se presentan algunas reflexiones sobre su utilidad. El sistema está basado en la lógica del plan de investigación. En un primer nivel, se compone de tres grandes grupos: a) estudios teóricos, b) estudios empíricos cuantitativos y c) estudios empíricos cualitativos. El primer grupo se descompone en estudios clásicos de revisión y estudios meta-analíticos. El segundo grupo se desglosa en siete clases: estudios descriptivos mediante observación, estudios descriptivos de poblaciones mediante encuestas, experimentos, cuasi experimentos, estudios ex post facto, experimentos de caso único y estudios instrumentales. El tercer grupo queda desglosado en etnografía, estudio de casos e investigación-acción. Se presentan las características más importantes de cada clase de estudio y, dentro de ellas, las claves que permiten identificar cada una de sus posibles variantes. Siempre se ilustran con investigaciones publicadas. El sistema de clasificación aquí propuesto se utilizará como modelo para los informes de investigación que se envíen a esta revista.
Criptococosis meníngea: características clínicas y de laboratorio
Gómez Arias,Bety; Zarco Montero,Luis A;
Acta Neurológica Colombiana , 2011,
Abstract: introduction. the incidence of infections caused by cryptococcus neoformans has increased over the past 20 years as a result of the human immunodeficiency virus epidemic and the raise of immunosuppressive therapies. a clinical and epidemiological study in colombia found a mean annual incidence rate of cryptococcosis in the general population of 2.4/1’000000 inhabitants, central nervous system cryptococcosis in 891 (95.7%) of the subjects, and hiv infection in 78.1% of the patients. objetive. to describe the demographics, clinic presentation and laboratory results of patients with a first episode of cryptococcal meningitis. the frequency of positive cerebrospinal fluid cultures after administration of 500 mg and 1 g of amphotericin b, respectively, was also assessed. materials y methods. case series study. the subjects were eighteen patients with first episode of cryptococcal meningitis confirmed by positive cerebrospinal fluid culture. demographic, clinical, laboratory and post treatment changes were described. results. 77.7% of the subjects were male. all the patients presented headache as the main symptom. hiv infection was found in 83.3%. initial cerebrospinal fluid analysis revealed an average of 24.8 white blood cells/ul, and average values for protein and glucose were 117mg/dl and 32.1 mg/dl, respectively. after treatment with 1 gram of amphotericin b, the average values cerebrospinal fluid values for white blood cells, protein and glucose were 20.2 ul, 85.7 mg/dl, and 42.3 mg/dl, respectively. the frequency of positive cryptococcus culture after administration of 500 mg of amphotericin b was 23%, and 0% after 1 gr. india ink stain remained positive after the treatment in 53.8% of subjects and the latex agglutination test was reactive in 84.6%. conclusions. almost all the subjects were found to have hiv infection and other bad prognostic features. the analysis of initial vs. post treatment cerebrospinal fluid analysis did not reveal statistically significant d
NUEVOS REGISTROS DE QUIRóPTEROS PARA LA RESERVA NACIONAL DE PARACAS, PERú
Francesca G. Montero Commisso,Carla Gazzolo Navarro,Gabriella Gonzalez Blacker
Ecología Aplicada , 2008,
Abstract: Se registró la presencia de Glossophaga soricina (Pallas 1766) (Phyllostomidae) y Myotis atacamensis (Lataste 1957) (Vespertilionidae) dentro de la Reserva Nacional de Paracas. Dichas especies no están actualmente incluidas en la lista de mamíferos del Plan Maestro 2003-2007 de dicha Reserva. Ambas especies han sido reportadas para el departamento de Ica. Se debe resaltar que Myotis atacamensis (Lataste, 1957) se encuentra como Especie Vulnerable según la UICN.
Primary Productivity and heterotrophic activity in an enclosed marine area of central Patagonia (Puyuhuapi channel; 44° S, 73° W)
G. Daneri,P. Montero,L. Lizárraga,R. Torres
Biogeosciences Discussions , 2012, DOI: 10.5194/bgd-9-5929-2012
Abstract: We assessed temporal variability in phytoplankton biomass, Chlorophyll a, nutrient availability, Gross Primary Production (GPP), community respiration (CR), and bacterial secondary production (BSP) over a year of monthly observations (October 2007 to October 2008) at a fixed station in the Puyuhuapi fjord, Chilean Patagonia (44° S, 73° W). A set of in situ observations gathered over two consecutive spring-summer seasons, and one autumn-winter season in the middle, has made it possible to connect the two-phase (i.e. productive season/non-productive season) pattern of Chlorophyll a (Chl a) variability shown by satellite data with a two-phase cycle in GPP, CR, and the composition of phytoplankton assemblages. Estimates of annual GPP and CR, integrated over the top 20 meters of the water column, were 533 and 537 g C m 2 yr 1, respectively. Low values of pCO2 were measured in mixed layer autotrophic waters (GPP/CR > 1) while high pCO2 levels were measured in mixed layer heterotrophic waters (GPP/CR < 1). Bacterial Secondary Production (BSP) was significantly and positively correlated with GPP (r = 0.6, p < 0.05, n = 24) and Chl a (r = 0.4, p < 0.05, n = 24) on an annual cycle basis. The winter drop in bacterioplankton (both bacteria and archea) activity (from 0.9 ± 0.6 g C m 2 d 1 to 0.6 ± 0.3 g C m 2 d 1) was not as pronounced as the winter drop in phytoplankton activity (from 1.1 ± 1.12 g C m 2 d 1 to 0.1 ± 0.09 g C m 2 d 1). It is hypothesized that dissolved organic matter (DOM) of terrestrial origin plays an important role (especially in winter) supporting bacterial activity in the Puyuhuapi fjord.
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