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Search Results: 1 - 10 of 202129 matches for " P. Eugenio "
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LECTURA INAUGURAL. DARWIN 200 A OS Y EL ESTADO ACTUAL DE LA TEORíA EVOLUTIVA
Andrade P Luis Eugenio
Acta Biológica Colombiana , 2009,
Abstract:
CARTA EDITORIAL
Eugenio Suárez P
Revista Chilena de Obstetricia y Ginecología , 2010,
Abstract:
Airway Pressure Release Ventilation Improves Oxygenation in a Patient with Pulmonary Hypertension and Abdominal Compartment Syndrome  [PDF]
Arturo G. Torres, Robert P. Tostenrud, Eugenio Lujan
Open Journal of Anesthesiology (OJAnes) , 2013, DOI: 10.4236/ojanes.2013.31005
Abstract:

The following case describes the favorable application of airway pressure release ventilation (APRV) in a patient with pulmonary hypertension who developed respiratory failure and abdominal compartment syndrome after abdominal closure from an incarcerated umbilical hernia. A 66-year-old male with past medical history of restrictive lung disease, obstructive sleep apnea and pulmonary hypertension, presented to the operating room for an incarcerated inguinal hernia. After abdominal closure, he gradually developed decreased oxygen saturation and hypotension. APRV was initiated during post operative day 2 after inability to maintain adequate oxygen saturation with resultant hypotension on pressure control ventilation with varying degrees of positive end expiratory pressure and 100% inspired oxygen concentration. The initial set high pressure on APRV was 35 mm Hg. Yet, in lieu of decreasing lung compliance, it peaked at 50 mm Hg. Eventually, inhaled Nitric Oxide was initiated post operative day 3 due to increasing pulmonary arterial pressures. A bedside laparotomy was eventually performed when bladder pressures peaked to 25 mm Hg. APRV gradually and temporally improved the oxygen saturation and decreased the pulmonary arterial pressures with subsequent increase in systemic blood pressures. APRV promoted alveolar recruitment and decreased the shunting associated with abdominal compartment syndrome. Better oxygen saturations lead to increases in blood pressure by decreasing the effects of hypoxic pulmonary vasoconstriction on the right ventricle (RV). In patients with decreasing lung compliance and pulmonary comorbidities, APRV appears safe and allows for improve oxygenation, after failure with conventional modes of ventilation.

Interaction between karstic aquifers and allogenic rivers: The aquifer of the national park of the ephemeral river Lobos Canyon (Spain)  [PDF]
Eugenio Sanz Pérez, Ignacio Menéndez Pidal, Rafael Segovia Rosales
Natural Science (NS) , 2013, DOI: 10.4236/ns.2013.52A042
Abstract:

A methodology is described for understanding the interaction of karstic aquifers with allogenic rivers, where little information is available. This methodology includes conventional hydrogenology methods tracer tests and measurements of flow into, out of and circulating within the karstic system. The method is designed to understand the hydrogeological behaviour of a river in sufficient detail, given a short study period. The methodology is applied to a karstic system in Spain, obtaining useful, quantitative results for a hydrological year, such as an estimate of the water balance, differentiation between autogenic and allogenic natural recharge, relationship and connection between the river and the aquifer, and measurements of infiltration capacity in watercourses under different hydrological situations. The paper deals with a useful example that could be applied to other rivers and aquifers where few data are available. It can be applied to aquifers under a natural regime and Mediterranean climate.

Uma nova espécie de Brachycephalus (Anura, Brachycephalidae) do estado do Rio de Janeiro
Pombal Jr., José P.;Izecksohn, Eugenio;
Papéis Avulsos de Zoologia (S?o Paulo) , 2011, DOI: 10.1590/S0031-10492011002800001
Abstract: a new species of brachycephalus is described from sacra família do tinguá, municipality of engenheiro paulo de frontin, state of rio de janeiro, atlantic rain forest. brachycephalus margaritatus sp. nov. is characterized by large size (svl 15.0 to 18.9 mm), orange color in life and cream to grayish cream in preservative, well developed dorsal plates with lateral edges curved down, and scattered bulges on upper surfaces of the body. the geographic distribution of b. margaritatus, b. ephippium, and b. garbeanus are provided.
Estudio multidimensional de las representaciones mentales de los estudiantes. Aplicación al concepto de respiración
Oscar Eugenio Tamayo Alzate,Neus Sanmartí P.
Revista Latinoamericana de Ciencias Sociales, Ni?ez y Juventud , 2003,
Abstract: Se realizó el estudio de las representaciones mentales de 21 estudiantes de 17-18 a os (primero de bachillerato del sistema educativo espa ol) sobre el concepto de respiración. Para su estudio se realizaron análisis orientados a lograr un mejor conocimiento de los aspectos epistemológicos, ontológicos y cognitivo-lingüísticos de los estudiantes; la integración de estas tres dimensiones de análisis nos llevo a construir representaciones mentales multidimensionales sobre el concepto de respiración. Desde la perspectiva epistemológica se ubicaron los textos escritos por los alumnos según los diferentes paradigmas explicativos de la respiración; el análisis ontológico nos llevo a identificar las principales concepciones de los estudiantes sobre el concepto analizado; el análisis cognitivo-lingüístico nos permitió conocer el tipo de discurso elaborado por los estudiantes así como su contenido y coherencia. En su conjunto el análisis multidimensional nos permitió identificar algunos obstáculos para el aprendizaje del concepto de respiración en el grupo estudiado.
Observation of a New J(PC)=1(+-) Isoscalar State in the Reaction Pi- Proton -> Omega Eta Neutron at 18 GeV/c
BNL-E852 Collaboration,:,P. Eugenio
Physics , 2000, DOI: 10.1016/S0370-2693(00)01347-2
Abstract: Results are presented on a partial wave analysis of the Omega Eta final state produced in Pi- Proton interactions at 18 GeVc where Omega -> Pi+ Pi- Pi0, Pi0 -> 2 Gammas, and Eta -> 2 Gammas. We observe the previously unreported decay mode Omega(1650) -> Omega Eta and a new 1(+-) meson state h1(1595) with a mass M=1594(15)(+10)(-60) MeV/c^2 and a width Gamma=384(60)(+70)(-100) MeV/c^2. The h1(1595) state exhibits resonant-like phase motion relative to the Omega(1650).
Nonextensive thermodynamics for hadrons with finite chemical potentials
Eugenio Megias,Debora P. Menezes,Airton Deppman
Physics , 2013,
Abstract: The non extensive thermodynamics of an ideal gas composed by bosons and/or fermions is derived from its partition function for systems with finite chemical potentials. It is shown that the thermodynamical quantities derived in the present work are in agreement with those obtained in previous works when $\mu \le m$. However some inconsistencies of previous references are corrected when $\mu > m$. A discontinuity in the first derivatives of the partition function and its effects are discussed in detail. We show that at similar conditions, the non extensive statistics provide a harder equation of state than that provided by the Boltzmann-Gibbs statistics.
Nonextensive thermodynamics with finite chemical potentials and protoneutron stars
Eugenio Megias,Debora P. Menezes,Airton Deppman
Physics , 2014, DOI: 10.1051/epjconf/20148000040
Abstract: We derive the nonextensive thermodynamics of an ideal quantum gas composed by bosons and/or fermions with finite chemical potentials. We find agreement with previous works when $\mu \le m$, and some inconsistencies are corrected for fermions when $\mu > m$. This formalism is then used to study the thermodynamical properties of hadronic systems based on a Hadron Resonance Gas approach. We apply this result to study the protoneutron star stability under several conditions.
Comparative studies on the growth and reproductive performances of Rhodnius prolixus reared on different blood sources
Gomes, José Eugenio P. Lima;Azambuja, P.;Garcia, E. S.;
Memórias do Instituto Oswaldo Cruz , 1990, DOI: 10.1590/S0074-02761990000300006
Abstract: host blood source was found to affect both the development and the reproductive performance of rhodnius prolixus. the insects were reared on citrated human, rabbit, chicken, sheep and horse blood sources, through a membrane feeder, during an entire life cycle, from eggs to adults. development and reproduction in terms of the number of unfed insects, number of moulting, mortality intermoulting period, number of egg/female, conversion of blood into egg (mg meal/egg) and percentage of hatch as effective physiological parameters were investigated. our results showed that human or rabbit blood meals were more nutritionally efficient than the other blood samples used because (i) the insects developed faster, presented low mortality and about 80% of them reached the adult stage; and (ii) females oviposited an average of at least 100% more eggs. the inefficiency of chicken and horse blood sources as diets for r. prolixus was manifested in (i) a decrease of the amount of ingested blood and (ii) only a reasonable nutritional quality. the inadequacy of sheep blood was observed by a mortality extremely high, poor moulting response and drastic reduction in egg production.
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