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Search Results: 1 - 10 of 253340 matches for " José Luis del; Héctor Salas Gaetgens "
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Comparación de los modelos SCORE y REGICOR para el cálculo del riesgo cardiovascular en sujetos sin enfermedad cardiovascular atendidos en un centro de salud de Barcelona
Baena Díez,José Miguel; Val García,José Luis del; Héctor Salas Gaetgens,Luis; Sánchez Pérez,Ricard; Altes Vaques,Eva; Deixens Martínez,Bibiana; Amatller Corominas,Marta; Katia Nú?ez Casillas,Dynaida;
Revista Espa?ola de Salud Pública , 2005, DOI: 10.1590/S1135-57272005000400003
Abstract: background: no studies have been published to date comparing score, regicor and framingham models. this study is aimed at analyzing how the regicor and score functions classify cardiovascular risk, their correlation and concordance with framingham (1998) and whether any differences exist among them with regard to the cardiovascular risk factors in high-risk groups. methods: descriptive cross-sectional study conducted in primary care. a total of 851 individuals within the 35-74 age range, free of cardiovascular diseases and selected by simple random sampling were included. a study was made of the percentage of high-risk patients with framingham (≥20% ten-year risk), score (≥5% ten-year risk) and regicor with cutoff points ≥20%, ≥15%, ≥10% and ≥5% at 10 years, given that with regicor ≥20% there are hardly any high-risk cases. a comparison was drawn between the correlation (pearson′s r) and concordance (kappa index) of the regicor and score high-risk individuals as compared to framingham. results: the high-risk percentages respectively found were: 23.3% with framingham; 15.2%; with score; and 1.4%, 5.8%, 17.6% and 57.0% with regicor with the cutoff points described. regicor has a 0.99 correlation, score a 0.78 correlation. regicor ≥10% showed a better concordance (kappa 0.83) than score (kappa 0.61). on comparing the cardiovascular risk factors of the high-risk cases (≥20% framingham, ≥5% score and ≥10% regicor), score showed higher prevalence of diabetes and a lower prevalence of hypercholesterolemia (p<0.05). conclusions: regicor showed a good correlation with framingham. with the ≥10% cutoff point, it classifies a number of individuals as high-risk similar to score and fewer than framingham. the score model would treat a number of patients similar to the regicor ≥10% model with hypolipemiant drugs, however showing lesser evidence of effectiveness of the treatment.
Extinciones en el mar: mitos y realidades
del Monte-Luna,Pablo; Lluch-Belda,Daniel; Carmona,Roberto; Bonilla,Héctor Reyes; Castro-Aguirre,José Luis; Serviere-Zaragoza,Elisa; Aurioles-Gamboa,David; Guzmán del Próo,Sergio A; Trujillo-Millán,Oscar; Elorduy-Garay,Juan Félix; Brook,Barry W;
Interciencia , 2008,
Abstract: it is a fact that humans have caused several extinctions, particularly in the terrestrial realm. in the marine realm, however, assessing the complete disappearance of a species from the face of the earth beyond any reasonable doubt, is a formidable task. in this contribution, the main results of an extensive review on the marine extinctions documented during the last 200 years are presented. it seems that ~50% of the recent documented marine extinctions may be over-estimated because there is no explicit consideration of critical uncertainties such as species? spatial distribution, or the evidence used to support some cases is misinterpreted or unconvincing. it is concluded that 1) humans are fully capable of eliminating marine species, particularly those that are naturally extinction-prone; 2) marine extinctions are less frequent than those in the terrestrial realm, and despite that the average number of documented extinctions per year shows a positive trend since the xix century, the trend during the last 100 years is negative; 3) before declaring an extinction, all available supporting evidence must be scientifically evaluated; and 4) when declarations of extinctions are premature or improperly supported by all available scientific evidence, they can negatively affect the very efforts dedicated to species conservation.
Experiences in the nationwide program for the integral care of the patient with diabetic foot ulcer using Heberprot-P
Gil,Miriela R; López-Mola,Ernesto; álvarez,Héctor; Hernández,Ariadna; Pérez,Caridad; Yera,Isis; Padrón,Leoncio; Llanes,José A; Silva,Ricardo; Abrahantes,María del Carmen; Baldomero,Julio; del Río,Amaurys; Ibargollín,Rafael; Herrera,Luis;
Biotecnolog?-a Aplicada , 2010,
Abstract: experiences in the nationwide program for the integral care of the patient with diabetic foot ulcer using heberprot-p. the cuban product heberprot-p is indicated for the treatment of complex diabetic foot ulcers (dfu). after its registration in 2006, the product was included into the cuban list of medicines and a nationwide program for the integral care of the dfu patient began. to date heberprot-p is available in more than 85 cuban health institutions and more than 3 800 diabetic patients with ulcers in their feet have received the benefits of this unique product. an integral program has been established for the attention of the patient with dfu, including the advanced technology of heberprot-p. this program relies on the closely linked and coordinated interaction between the primary and secondary levels of health, in which prevention and therapy merge each other. the ministry of public health of cuba has established impact indicators in order to control and assess the performance of the program.
Chemical and Physical Defense Traits in Two Sexual Forms of Opuntia robusta in Central Eastern Mexico
Mariusz Krzysztof Janczur, Héctor Javier León Solano, Lupita Tzenyatze Solache Rámos, Citlalli Hypatia Mendoza Reyes, María del Carmen Oro Cerro, María Dolores Mariezcurrena Berasain, Irma Victoria Rivas Manzano, Javier Manjarrez, José Luis Villareal Benitez, Marcin Czarnoleski
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0089535
Abstract: Sexually dimorphic plants provide an excellent opportunity for examining the differences in the extent of their defense against herbivores because they exhibit sex-related differences in reproductive investment. Such differences enable comparison of the sex with high reproduction expenses with the sex that expends less. The more costly sex is usually also better defended against herbivores. Generally, females are considered more valuable than hermaphrodites in terms of fitness; however, hermaphrodites are more valuable if they can produce seed by autonomous selfing, provided that the inbreeding depression is low and pollen is limited. We studied a gynodioecious population of Opuntia robusta from Central-Eastern Mexico, which has been reported to be trioecious, dioecious, or hermaphrodite, and addressed the following questions: 1) Is the hermaphrodite's reproductive output higher than the female's, and are hermaphrodites thus better defended? 2) Are plant tissues differentially defended? 3) Do trade-offs exist among different physical defense traits? and 4) among physical and chemical defense traits? We found that 1) hermaphrodites had a higher seed output and more spines per areola than females and that their spines contained less moisture. Non-reproductive hermaphrodite cladodes contained more total phenolic compounds (TPCs) than female ones. In addition, 2) hermaphrodite reproductive cladodes bore more spines than female cladodes, and 3) and 4) we found a negative relationship between spine number per areola and areola number per cladode and a positive relationship between spine number per areola per plant and TPC concentration per plant. Non-reproductive hermaphrodite cladodes contained a higher concentration of TPCs than female cladodes, and parental cladodes contained fewer TPCs than both reproductive and empty cladodes.
Organic Manures Improved the Phenolic Content, Antioxidant Capacity and Soluble Solids in Pepper  [PDF]
Alejandro Moreno-Reséndez, Ricardo Parcero-Solano, José Luis Reyes-Carrillo, Lilia Salas-Pérez, María del Rosario Moncayo-Luján, Mercedes Georgina Ramírez-Aragón, Norma Rodríguez-Dimas
Food and Nutrition Sciences (FNS) , 2016, DOI: 10.4236/fns.2016.714127
Abstract: The aim of this research was to determine the effect of three organic manures (vermicompost, simple compost, compost with gypsum) with four different levels, as sources of fertilization, and mixed with river sand, this was used as an inert material, on the phenolic content, antioxidant capacity and total soluble solids of bell peppers (Capsicum annuum L.). The 12 mixtures formulated, with eight replications, were distributed in a completely randomized design. Data were statistically analyzed by analysis of variance and means were compared by test Tukey5%. All variables were significantly affected (p ≤ 0.001). Fruits with highest phenolic content were developed in the mixtures M2, M5 and M6 with 538.76, 541.54 and 565.04 mg GAE·100 kg-1 DW, respectively. Antioxidant capacity of fruits was increased with mixtures M2, M5, M6 and M7 with values of 934.48, 942.04, 921.69 and 924.17 μM TEAC·g-1 DW, respectively. The soluble solids content was higher in mixtures M1 and M2 with values of 4.93 and 4.97 °Brix, respectively. It was concluded that the variables studied were favored when applying, as sources of fertilization, mixtures of these organic manures with river sand, which could represent a suitable alternative for food production with quality nutraceutical.
Patología UltraestructuraL del músculo gluteus medius de Caballos Criollos en los llanos venezolanos infectados naturalmente por el virus de la anemia infecciosa equina
Acevedo,Luz Marina; Finol,Héctor José; Sucre,Luis;
Revista Científica , 2009,
Abstract: the equine infectious anemia (eia) is a viral disease of acute response and progress to chronic course which affects equine of venezuelan plains. until now, there is no information about the possible effect of eia on skeletal muscle ultrastructure. the aim of the present investigation was to study the ultrastructure of muscle gluteus medius from horses positive to coggins test and animal control negative to the test. muscle biopsies were processed by routine techniques for transmission electron microscopy. muscle alterations varied from slight to severe, including atrophy, swelling of sarcotubular system and mitochondria. mitochondria showed a matrix with different electron densities and the presence of electron dense granules. there were observed different kinds of lysosomes. more severe alterations included hypercontraction and complete loss of myofilaments, rupture of sarcolemma and segmental necrosis. intramuscular capillaries exhibited endothelial cell cytoplasm infoldings into the lumen and partially or totally occluded lumen. basement membrane was widened and reduplicated. some capillaries showed widened endothelial cell cytoplasm, mitochondria and rough endoplasmic reticulum swelling and even degenerated. others showed ruptured endothelial wall. pericytes exhibited a cytoplasm which varied from normal to a proliferative one. the mononuclear cell infiltrate consisted of macrophages and neutrophils. most of observed alterations have been described in muscle disorders with an autoimmune component.
Purification and Properties of an Extracellular Halophilic Serine-Protease from Haloferax mediterranei
Héctor Nolasco,Donald J. Kushner,José Luis Ochoa
Revista de la Sociedad Química de México , 2002,
Abstract: Na+, K+, y Mg+2son iones esenciales para el cultivo y la producción de la proteasa extracelular de Haloferax mediterranei. Los iones amonio (> 2 % m/v) reducen la producción de enzima, en cambio los de Ca+2(~10 mM) la favorecen y, además, activan la enzima. La enzima extracelular, purificada mediante ultra-filtración y Cromatografía de Interacción Hidrofóbica, consiste en una cadena de polipéptido de PM 25,500 Da, con una actividad óptima a NaCl 3 M, pH 8, dentro del intervalo de 45-50 °C. Esta enzima pertenece a la clase de serina-proteasas que pueden encontrar atractivas aplicaciones industriales.
Para una teoría de las prácticas del ambientalismo mundial
Héctor R. Leis,José Luis D′Amato
Revista Theomai , 2005,
Uso del índice tobillo-brazo en la reclasificación del riesgo vascular en pacientes con infección VIH
Olalla,Julián; Salas,Daniel; De La Torre,Javier; Del Arco,Alfonso; Prada,José Luis; García Alegría,Javier;
Revista médica de Chile , 2011, DOI: 10.4067/S0034-98872011000800009
Abstract: background: vascular risk is an important cause of morbidity and mortality in hiv infected patients. aim: to study the value of the ankle-brachial index (abi) in vascular risk stratification in a cohort of people with hiv infection. patients and methods: vascular risk was calculated in all the patients that agreed to participate in the study and clinical reports were reviewed retrospectively. ten year risk of fatal myocardial infarction was calculated according to framingham equation, national cholesterol education program (ncep) iii and systematic coronary risk evaluation (score) project score. abi was calculated measuring resting systolic blood pressure at the ankle, that was compared with the systolic brachial pressure. the ratio of the two pressures defined abi, that was considered abnormal if it was d" 0.9 or e" 1.3. results: a total of 231 hiv infected patients aged 23 to 82 years (80% males) were enrolled. ten years risk according to framingham equation was 8.4%, 95% confidence intervals (ci): 7.54-9.15 and according to score scale was 0.8%, 95% ci: 0.62-1.01. according to ncep iii 9% of patients had a high or very high cardiovascular risk. median abi was 1.17 (95% ci intervals: 1.16-1.19) and 58 patients (25%) had an abnormal value. using abi results, approximately 20% of patients were re-classified as having a high vascular risk. conclusions: abi identified approximately 20% of this cohort of hiv infected subjects as having high vascular risk.
Discriminación de bosques de Araucaria araucana en el Parque Nacional Conguillío, centro-sur de Chile, mediante datos Landsat TM Discrimination of araucaria forests (Araucaria araucana) in the Conguillio National Park, Southern-Center Chile, using Landsat TM data
Nelson Ojeda,ctor Sandoval,Héctor Soto,José Luis Casanova
Bosque (Valdivia) , 2011,
Abstract: Los bosques de Araucaria araucana poseen gran relevancia ecológica, sin embargo su distribución espacial es poco conocida. Sólo han sido clasificados a escala peque a, utilizando fotos e imágenes de satélite procesados con métodos convencionales. El presente estudio tuvo como objetivo discriminar y caracterizar tipos de bosques de A. araucana en el Parque Nacional Conguillío, localizados en el centro-sur de Chile, mediante datos derivados del satélite Landsat-5 TM y sistemas de información geográfica. El índice de vegetación de diferencia normalizada (NDVI) se relacionó satisfactoriamente con las variables cobertura de copa y el diámetro a la altura del pecho, por esta razón, se incorporaron valores de este índice al proceso de clasificación. A partir del modelo digital elevación y el NDVI se minimizó el efecto provocado por la sombra. Se discriminaron siete tipos de bosques, entre densos y semidensos-abiertos, y de acuerdo con las especies acompa antes. La fiabilidad global de la clasificación fue de 83,8 %. La mayor fiabilidad para el productor fue para el bosque de mediana densidad de copa de A. araucana-Nothofagus dombeyi (B2) (87,5 %) y para el consumidor, para los bosques de alta densidad de copa de A. araucana-N. dombeyi (B1) y también los de mediana densidad (B2) (93 %). Se concluye que incorporando valores NDVI y datos provenientes del modelo digital de elevación al proceso de clasificación satelital, es posible discriminar bosques de araucaria con fiabilidad satisfactoria en áreas de relieve abrupto, información muy útil para manejar estos ecosistemas boscosos. Araucaria forests (Araucaria araucana) have a tremendous ecological relevance; however, the information concerning their spatial distribution is still insufficient. They have only been classified according to small management scales, using satellite photos and images processed through conventional methods. The present study had as its objective to discriminate and characterize types of A. araucana forests in the Conguillío National Park, located in the Southern-Center Chile, through data derived from the Landsat-5 TM satellite and geographic information systems. The normalized difference vegetation index (NDVI) was satisfactorily related with variables corresponding to crown coverage and the diameter at breast height; thus, these index values were incorporated to the classification process. Using the digital elevation model and the NDVI, the effect provoked by the shadow was minimized. Seven types of forests, between dense and semi-dense-open, were discriminated in accordance with the a
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