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Search Results: 1 - 10 of 469929 matches for " Gustavo A.; Bello-Parías "
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Calidad Percibida por Usuarios de Hospitales del Programa de Reestructuración de Redes de Servicios de Salud de Colombia
Cabrera-Arana,Gustavo A.; Bello-Parías,León D.; Londo?o-Pimienta,Jaime L.;
Revista de Salud Pública , 2008, DOI: 10.1590/S0124-00642008000400009
Abstract: objective establishing a quality base-line as perceived by hospital users, subject to intervention by the health-service restructuring, redesign and modernisation programme. method 4 021 users were interviewed face-to-face in august 2006 from a sample of hospitals from the programme using an instrument already validated for measuring health service users’ perception of quality (pecasuss). results the interviewees (38,7 % mean age, 70 % women, 60 % affiliated to the subsided system, 55 % from stratum 1 and 53 % attended in general consultation) scored mostly as good or very good 16 different aspects perceived of the quality of services. mean user quality score was 3,98 (0,8 sd) on a score ranging from 0,0 (bad) to 5,0 (excellent). conclusions quality was generally rated as good as perceived by people using the hospital programme. the humanised treatment received from the medical staff was given the highest score regarding quality of attention received by the interviewees.
Validación de un Instrumento para Medir Calidad Percibida por Usuarios de Hospitales de Colombia
Cabrera- Arana,Gustavo A.; Londo?o- Pimienta,Jaime L.; Bello- Parías,León D.;
Revista de Salud Pública , 2008, DOI: 10.1590/S0124-00642008000300009
Abstract: objective validating an instrument for measuring the perceived quality of services received by people using hospitals forming part of the colombian ministry of social protection's restructuring, redesigning and modernisation programme for health-service providing networks. methods sánchez and echeverri's guidelines for validating health quality measurement scales were followed due to the lack of a valid instrument for doing this in colombia. results conceptual synthesis led to identifying a structure of constituent indicators, domains and sub-domains regarding the perception of health service quality. a list of reactions (having a scale for categorising the replies) was analysed according to the validity of appearance, construct, criteria and utility as criteria for sensitivity and usefulness. successive revisions and three rounds of field-trials led to producing pecasuss, an acronym given to the instrument for measuring users' perception of health service quality (percepción de calidad según usuarios de servicios de salud). conclusions the guidelines effectively orientated the validation of the instrument required for measuring the perceived quality of health services received by people using hospitals forming part of the programme.
Soil Agricultural Potential in Four Common Andean Land Use Types in the Highlands of Southern Ecuador as Revealed by a Corn Bioassay  [PDF]
Gustavo Chacón, Daniel Gagnon, David Paré
Agricultural Sciences (AS) , 2015, DOI: 10.4236/as.2015.610108
Abstract: In the Andes, little is known about the relationships among current land uses and their effect on soil fertility. Corn (Zea mays L.) was used to evaluate soil quality for plant growth on soils of four land uses, along an expected gradient of fertility: native forests (Nf) > pastures (Pa) > Eucalyptus globulus Labill. plantations (Eg) > Pinus patula Schlecht. plantations (Pp). Corn was grown in soils taken from four different areas, for the four land uses in each. In a common garden, a randomized block design was used with four treatments: controls (C), ammonium nitrate (N), triple superphosphate (P), and combined N and P fertilizers (N + P). On soils from Nf, Pa and Eg, fertilization response was N + P > P > N > C; corn biomass (g/pot-1) averaged 4.5 in N + P, 3.3 in P, 1.8 in N, 1.7 in C; P content (mg/pot-1) averaged 12 in N + P, 11.9 in P, 2.3 in N, 2 in C. N + P enhanced growth the most. Mortality was high on Pp soils, growth weak, and fertilization response was P > N + P > C ≥ N; corn biomass (g/pot-1) was 0.9 in P, 0.5 in N + P, 0.8 in C, 0.4 in N; P content (mg/pot-1) was 4.4 in P, 2.3 in N + P, 1.8 in C, 1 in N. All soils had P, K, Ca and Mg deficiencies. Al toxicity possibly occurred only in Pp soils. All control soils had low fertility. Responses to N and P were high except for Pp. Pastures and plantations were once natural forests converted to agriculture, then to pastures as soil fertility declined. Plantations were likely established on poorest pastures; only pine grew on poorest soils. This land use endpoint has the lowest agricultural potential; other land uses have limitations in P, N, and potentially K.
Lipopolysaccharide-Induced Lung Injury Is Independent of Serum Vitamin D Concentration
Lindy S. Klaff, Sean E. Gill, Brent E. Wisse, Kristen Mittelsteadt, Gustavo Matute-Bello, Peter Chen, William A. Altemeier
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0049076
Abstract: Vitamin D deficiency is increasing in incidence around the world. Vitamin D, a fat-soluble vitamin, has documented effects on the innate and adaptive immune system, including macrophage and T regulatory (Treg) cell function. Since Treg cells are important in acute lung injury resolution, we hypothesized that vitamin D deficiency increases the severity of injury and delays injury resolution in lipopolysaccharide (LPS) induced acute lung injury. Vitamin D deficient mice were generated, using C57BL/6 mice, through diet modification and limited exposure to ultraviolet light. At 8 weeks of age, vitamin D deficient and sufficient mice received 2.5 g/kg of LPS or saline intratracheal. At 1 day, 3 days and 10 days, mice were anesthetized and lung elastance measured. Mice were euthanized and bronchoalveolar lavage fluid, lungs and serum were collected. Ex vivo neutrophil chemotaxis was evaluated, using neutrophils from vitamin D sufficient and deficient mice exposed to the chemoattractants, KC/CXCL1 and C5a, and to bronchoalveolar lavage fluid from LPS-exposed mice. We found no difference in the degree of lung injury. Leukocytes were mildly decreased in the bronchoalveolar fluid of vitamin D deficient mice at 1 day. Ex-vivo, neutrophils from vitamin D deficient mice showed impaired chemotaxis to KC but not to C5a. Vitamin D deficiency modestly impairs neutrophil chemotaxis; however, it does not affect lung injury or its resolution in an LPS model of acute lung injury.
Leiomiomatose peritoneal disseminada: relato de caso
Gedda, Marco Antonio Marini;Piantavinha, Giuliano Arrivabeni;Coutinho, Túlio Rebello;Mendon?a, Silvana Machado;Bello, Gustavo de Vasconcelos;
Radiologia Brasileira , 2008, DOI: 10.1590/S0100-39842008000500015
Abstract: the present study reports the case of a 46-year-old female patient complaining of mild premenstrual pain and increase in the volume of the periumbilical region. the condition progressed with a gradual increase of the pain intensity. ultrasonography, computed tomography and magnetic resonance imaging were performed. biopsy of tissue collected during exploratory laparotomy confirmed the diagnosis of leiomyomatosis peritonealis disseminata.
Ischemia-Reperfusion Lung Injury Is Attenuated in MyD88-Deficient Mice
William A. Altemeier, W. Conrad Liles, Ana Villagra-Garcia, Gustavo Matute-Bello, Robb W. Glenny
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0077123
Abstract: Ischemia-reperfusion lung injury is a common cause of acute morbidity and mortality in lung transplant recipients and has been associated with subsequent development of bronchiolitis obliterans syndrome. Recognition of endogenous ligands released during cellular injury (damage-associated molecular patterns; DAMPs) by Toll-like receptors (TLRs), especially TLR4, has increasingly been recognized as a mechanism for inflammation resulting from tissue damage. TLR4 is implicated in the pathogenesis of ischemia-reperfusion injury of multiple organs including heart, liver, kidney and lung. Additionally, activation of TLRs other than TLR4 by DAMPs has been identified in tissues other than the lung. Because all known TLRs, with the exception of TLR3, signal via the MyD88 adapter protein, we hypothesized that lung ischemia-reperfusion injury was mediated by MyD88-dependent signaling. To test this hypothesis, we subjected C57BL/6 wildtype, Myd88-/-, and Tlr4-/- mice to 1 hr of left lung warm ischemia followed by 4 hr of reperfusion. We found that Myd88-/- mice had significantly less MCP-1/CCL2 in the left lung following ischemia-reperfusion as compared with wildtype mice. This difference was associated with dramatically reduced lung permeability. Interestingly, Tlr4-/- mice had only partial protection from ischemia-reperfusion as compared to Myd88-/- mice, implicating other MyD88-dependent pathways in lung injury following ischemia-reperfusion. We also found that left lung ischemia-reperfusion caused remote inflammation in the right lung. Finally, using chimeric mice with MyD88 expression restricted to either myeloid or non-myeloid cells, we found that MyD88-dependent signaling in myeloid cells was necessary for ischemia-reperfusion induced lung permeability. We conclude that MyD88-dependent signaling through multiple receptors is important in the pathogenesis of acute lung inflammation and injury following ischemia and reperfusion.
LESPEGMATITOIDESDESROCHESVOLCANIQUESAFACIESBASALTIQUE.APROPOSDECELLESDUWEI-TCHANG
PAR,A.,LACROIX
地质学报 , 1929,
Abstract: DepuislapublicationdumemoirequelaSocietegeologiquedeChinem'afaitl'honneurd'insererdanssonBulletin,~1j'aicompleteaunpointdevuegeneral,l'etudedutypelithologiqueauquelappartientlarocheduWei-tchangquej'aidecritedanscetravailsouslenomdedoleritepegmatoideetquej'appelleaujour-
OBSERVATIONSSURLESLAVESDELAMANDCHOURIEETDELAMONGOLIEORIENTALE.
PAR,A.,LACROIX
地质学报 , 1929,
Abstract: JemeproposededecrireiciquelquesrochesvolcaniquesqueM.EdouardAhnertarecueilliesauSuddel'Amouraucoursdesesexplorations~1etqu'ilaeul'amabilitedemecommuniquer,Eliespermettentdeprolongerauloin,ducoteduNord,lesobservationsquifontI'objetd'uneprecedentenote.~2
Mechanical ventilation interacts with endotoxemia to induce extrapulmonary organ dysfunction
D Shane O'Mahony, W Conrad Liles, William A Altemeier, Shireesha Dhanireddy, Charles W Frevert, Denny Liggitt, Thomas R Martin, Gustavo Matute-Bello
Critical Care , 2006, DOI: 10.1186/cc5050
Abstract: We administered intraperitoneal Escherichia coli lipopolysaccharide (LPS; 1 μg/g) to C57BL/6 mice, and 14 hours later subjected the mice to 6 hours of mechanical ventilation with tidal volumes of 10 ml/kg (LPS + MV). Comparison groups received ventilation but no LPS (MV), LPS but no ventilation (LPS), or neither LPS nor ventilation (phosphate-buffered saline; PBS).Myeloperoxidase activity and the concentrations of the chemokines macrophage inflammatory protein-2 (MIP-2) and KC were significantly increased in the lungs of mice in the LPS + MV group, in comparison with mice in the PBS group. Interestingly, permeability changes across the alveolar epithelium and histological changes suggestive of lung injury were minimal in mice in the LPS + MV group. However, despite the minimal lung injury, the combination of mechanical ventilation and LPS resulted in chemical and histological evidence of liver and kidney injury, and this was associated with increases in the plasma concentrations of KC, MIP-2, IL-6, and TNF-α.Non-injurious mechanical ventilation strategies interact with endotoxemia in mice to enhance pro-inflammatory mechanisms in the lungs and promote extra-pulmonary end-organ injury, even in the absence of demonstrable acute lung injury.Multiple organ dysfunction syndrome (MODS) is a leading cause of death among patients with sepsis [1,2]. MODS develops in critically ill patients, primarily in the setting of systemic insults, including sepsis, burns, pancreatitis, cardiopulmonary bypass, or acute respiratory distress syndrome (ARDS) [2-5]. MODS has been defined as progressive but reversible dysfunction of at least two organs that arises from an acute disruption of normal homeostasis, requiring intervention [1]. Not all patients with sepsis develop MODS, but the development of MODS increases the mortality of patients with sepsis [6]. The mechanisms that link sepsis and ARDS to the development of MODS are not well understood.Recent studies suggest a possible link bet
Identificación de Vertisoles de origen sedimentario a través de su firma espectral
Sotelo Ruiz, Erasto;Gutiérrez Castorena, María del Carmen;Ortiz Solorio, Carlos Alberto;Cruz Bello, Gustavo;Segura Castruita, Miguel ángel;
Agricultura técnica en México , 2006,
Abstract: soil classification is expensive and time consuming; therefore, it is necessary to develop alternative methods for this task. the satellite images can be used for identifying the soil class, since some properties such as: clay content, moisture, roughness, bulk density, color, and organic matter content have a characteristic reflectance. the percentage of clay and the bulk density define the vertisols and the others properties mentioned are also related, for that reason its study in conjunction can generate a spectral pattern that contribute towards its delimitation on a satellite image. the objectives of this research were 1) to classify and determine the mineralogy in vertisols of sedimentary origin from san fernando, tamaulipas, 2) to identify the spectral signature of the vertisols present in the area of study, 3) to determine the typical properties of the vertisol soils with respect to its reflectance on the satellite image and 4) to model the distribution of the typical vertisols through methods of satellite image interpretation. the study was carried out in 25 000 ha in the municipality of san fernando, tamaulipas, mexico. the satellite image landsat 7 etm+ used was taken on april 29th, 2002. the soils were classified as vertisols and mollisols with the same type of primary and secondary minerals, and differentiated by its content of calcite. the reflectance values of the soils were statistically different in the bands 5 and 7. however, the soils could not be differentiated by a supervised classification with the method of maximum likelihood of idrisi in the satellite images, due to the fact that the content of calcite >60% and calcium carbonate >15% defined the spectral signature of both soils, vertisols and mollisols.
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