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Search Results: 1 - 10 of 138218 matches for " Jorge O.;Morales Blandir "
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Estudio situacional de siete revistas latinoamericanas de neumología
Oyarzún Gómez, Manuel;Ramírez Venegas, Alejandra;Agüero Fernández, Adalberto;Martínez, José Ant?nio Baddini;Bermúdez Gómez, Mary;Cáneva, Jorge O.;Morales Blandir, Jaime E.;Pérez-Padilla, Rogelio;
Jornal Brasileiro de Pneumologia , 2007, DOI: 10.1590/S1806-37132007000300021
Abstract: objective: to characterize the situation of pulmonology journals published in latin america. methods: a survey was conducted in a meeting sponsored by the latin american thoracic society. each journal editor presented a report and answered a questionnaire. results: improving information acquisition is the main motivation for pulmonology societies to edit their own journals, whereas disseminating medical knowledge and reporting experiences are the main motivations for authors to submit papers. the most common failing in the manuscripts submitted is poor compliance with the journal guidelines. improving author-editor-reviewer relationships would be the best strategy for improving the quality of manuscripts. suggestions for improving latin american journals included the following: promoting professionalism in editorial tasks; encouraging manuscript reviewers to be more meticulous; and embracing international norms for editing medical journals. the following major problems were reported: a lack of regular, appropriate periodicity of issues; a shortage of original papers that are considered 'milestones' in the specialty; a low rejection rate for submitted papers; a high turnover of editors. conclusion: based on our findings, we can make the following recommendations: although many journals are available in electronic form, they should also be maintained in print form; each journal should divulge its subscription fee, even if it is included in the annual society membership dues; although each latin american country might decide to publish its own pulmonology journal, the feasibility of publishing a multinational latin american pulmonology journal should be explored.
Synthesis of New Polymer Ionomers via Ring-Opening Metathesis Polymerization  [PDF]
A. A. Santiago, J. Vargas, Jorge A. Cruz-Morales, M. A. Tlenkopatchev, R. Gavi?o, Yu. A. Malkanduev, N. A. Sivov
Open Journal of Organic Polymer Materials (OJOPM) , 2014, DOI: 10.4236/ojopm.2014.44011
Abstract: The N-pentafluorophenyl-exo-endo-norbornene-5,6-dicarboximide (2a) and N-phenyl-exo-endo-nor-bornene-5,6-dicarboximide (2b) monomers were synthesized and polymerized via ring-opening metathesis polymerization (ROMP) using bis(tricyclohexylphosphine) benzylidene ruthenium(IV) dichloride (I) and tricyclohexylphosphine [1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene][benzylidene] ruthenium dichloride (II). Both catalysts were used to synthesize random and block high molecular weight copolymers which were further hydrogenated using a Wilkinson’s catalyst. Then, the saturated copolymers were modified by reacting with sodium 4-hydroxybenzene-sulfonate dihydrate to generate new ionomers with fluoro-sulfonic acid pendant groups.
Mestizaje, malicia indígena y viveza en la construcción del carácter nacional
Jorge Morales
Revista de Estudios Sociales , 1998,
Abstract: Este articulo explora tres conceptos culturales, arraigados en las mentalidades colombianas a través de diversos sectores socioeconómicos y el papel adaptativo de Mi malicia indígena y la viveza en las relaciones sociales y en la construcción de la auto imagen nacional.
Propiedades metalúrgicas y electroquímicas de la aleación Au-1,7% Ti para aplicaciones odontológicas
Sánchez,Hector Darío; Calderón,Jorge Andrés; Echavarría,Alejandro; Morales,Lina;
Revista Facultad de Ingeniería Universidad de Antioquia , 2006,
Abstract: the micro-structure and micro-hardness of an au-1,7%ti alloy in different conditions: centrifuged, solubilized and aged at 400°cduring 4 hours were evaluated. polarization curves obtained in an artificial physiological solution (ringer) of the au-1,7% ti alloy, with and without surface passivation treatment, were compared to those of an au-pd-ga-in alloy and pure gold. results indicate that the au-1,7% ti alloy has a good response to the aging treatment in the passivated condition the alloy alsopresents a satisfactory, although lower, corrosion resistance with respect to the au-pd-ga-in alloy.
El humanismo de un científico insigne de la estomatología cubana
Bécquer águila,Jorge Luis; Vila Morales,Dadonim; Ota?o Laffitte,Gladys María;
Revista Cubana de Estomatolog?-a , 2011,
Abstract: it is difficult to summarize en a few pages the brilliant life of a person honoring the stomatology sciences in cuba and in latin america. for everybody knew him, the professor rigoberto ota?o lugo was always a symbol of camaraderie, diplomacy and politeness with everybody. present paper is a historical review to collect biographical data more general of the deceased professor of the stomatology faculty of the university of la habana, cuba. to this end authors interviewed in an open way to colleagues and relatives shared with him many years of work. the documentary sources included the staff file of such academic institution. information was organized taking into account four basic features: its political and teaching-assisting performance, its scientific activity in the international scenario of the stomatology, as well as the medals received. its simplicity and faith in the human improvement were distinctive qualities. its wide smile and its maxim of never to hurt to nobody will be always remembered for all colleagues and friends.
Evaluación de la influencia del cobre y el níquel en la cinética de corrosión de los aceros autoprotectores por espectroscopía de impedancia in situ y ex situ
Casta?o,Johanna; Restrepo,Iván; Calderón,Jorge; Morales,álvaro; Echavarría,Alejandro;
Revista Facultad de Ingeniería Universidad de Antioquia , 2009,
Abstract: a cebelcor chamber was used to make immersion-emersion cyclical tests of two commercial steels (astm a36 and astm a242) and three experimental plasma arc melted steels (0.50% ni, 0.50% cu and 0.25% cu+0.25%ni). four samples of each steel material were evaluated. aerated 10-3m na2so4 solution was employed as corrosive solution. the behaviour of each test was evaluated by means of electrochemical impedance spectroscopy technique (eis) in situ (inside the cebelcor chamber) for 1, 15, 30, 45, 60, and 90 days by using a frequency range between 200 hz-0.01 hz frequency range. at the end of the exposition the rusts were evaluated outside the cebelcor by means of the (ex situ) eis, but using a wide frecuency range (900 khz-0.005hz). the simulation of these last data by means of an equivalent circuit with warburg diffusion impedance, showed the existence of two layers of rust, electrically different between them. the results of in situ and ex situ eis data for 90 days exposition times indicated that exists a statistically significative difference between the astm a36 and the other materials, demonstrating a larger ohmic resistance of the rust of the last ones. the astm a36 steel showed that the rust is composed of α/υ feooh plus magnetite (10%). the astm a242 and the experimental steels with nickel, copper and combinations of both showed that the rusts are composed of α/υ feooh with no evidence of magnetite. a similar effect between copper and nickel in the atmospheric corrosion kinetics was found. all the parameters found in the simulation are interpreted in terms of a phenomenological model proposed for explaining the results.
El humanismo de un científico insigne de la estomatología cubana The humanism of an illustrious scientist of cuban stomatology
Jorge Luis Bécquer águila,Dadonim Vila Morales,Gladys María Ota?o Laffitte
Revista Cubana de Estomatolog?-a , 2011,
Abstract: Difícil resulta resumir en pocas páginas una vida luminosa que prestigió las ciencias estomatológicas tanto en Cuba como en América Latina. Para todo el que tuvo la posibilidad de conocerlo, el profesor Rigoberto Ota o Lugo fue siempre símbolo de camaradería, diplomacia y buen trato para con todos. Se realizó una investigación de tipo histórica, para recopilar los datos biográficos más generales del recién fallecido profesor, de la Facultad de Estomatología de la Universidad de La Habana, Cuba. Para este propósito se realizaron entrevistas abiertas a compa eros y familiares que compartieron con él a os de trabajo. Se tuvo como fuentes documentales el expediente de cuadro de la mencionada institución académica. La información fue organizada según cuatro aspectos básicos: su desempe o político, su desempe o docente-asistencial, su actividad científica en la arena estomatológica internacional, así como las condecoraciones que ostentó. Su sencillez y su fe en el mejoramiento humano fueron sus cualidades distintivas. Su sonrisa amplia y su máxima de nunca hacerle mal a nadie serán recordadas siempre por todos sus colegas y amigos. It is difficult to summarize en a few pages the brilliant life of a person honoring the stomatology sciences in Cuba and in Latin America. For everybody knew him, the professor Rigoberto Ota o Lugo was always a symbol of camaraderie, diplomacy and politeness with everybody. Present paper is a historical review to collect biographical data more general of the deceased professor of the stomatology Faculty of the University of La Habana, Cuba. To this end authors interviewed in an open way to colleagues and relatives shared with him many years of work. The documentary sources included the staff file of such academic institution. Information was organized taking into account four basic features: its political and teaching-assisting performance, its scientific activity in the international scenario of the stomatology, as well as the medals received. Its simplicity and faith in the human improvement were distinctive qualities. Its wide smile and its maxim of never to hurt to nobody will be always remembered for all colleagues and friends.
Desarrollo y producción del plátano Dominico–Hartón (Musa AAB
Cayón Gerardo,Valencia M. Jorge A.,Morales O. Humberto,Domínguez V. Argemiro
Agronomía Colombiana , 2004,
Abstract: La densidad de población en el cultivo del plátano está condicionada por la distancia entre surcos y por el número de plantas en cada sitio de producción, y es un parámetro que influye positiva o negativamente sobre los rendimientos. En el Centro de Investigación “El Agrado”, localizado en Montenegro, Quindío, a 1.310 m.s.n.m. y con 1.985 mm de precipitación anual, se evaluaron 21 arreglos de siembra basados en la relación de distancias entre surcos y sitios, bajo el dise o experimental de bloques completos al azar, con 21 tratamientos, tres repeticiones y 12 plantas por repetición. Las densidades de 1.500 a 3.000 plantas ha -1 no afectaron el crecimiento y desarrollo del cultivo en el primer ciclo de producción; tampoco se presentaron diferencias estadísticas significativas entre las densidades para los períodos de siembra a floración, floración a cosecha, y siembra a cosecha. En los arreglos con densidades de 1.500 a 2.500 plantas ha -1 se obtuvieron racimos con pesos comercialmente aceptables, mientras que en densidades superiores a 2.750 plantas ha -1 el peso promedio de los racimos se redujo drásticamente (22%). El rendimiento real, calculado con base en el porcentaje de cosecha, registró una relación directamente proporcional con la densi
ALGORITMO DE ORDENAMIENTO POR COMPARACIONES HEAPINSERT SORT
HUGO HUMBERTO MORALES PE?A,ANGEL AUGUSTO AGUDELO,JORGE IVAN RIOS PATI?O
Scientia Et Technica , 2010,
Abstract: Se propone una variante del algoritmo de ordenamiento por inserción, al cual se le adiciona la función de construir montón del algoritmo de ordenamiento por montones. Es estratégico primero construir un montón sobre el arreglo que se va a ordenar porque la información del arreglo "tiende" a quedar pseudo ordenada de forma descendente, luego al invertir el arreglo la información "tiende" a quedar pseudo ordenada de forma ascendente, economizando trabajo del algoritmo de ordenamiento por inserción. Las pruebas realizadas sobre la variante del algoritmo muestran una economía de más del 50% del tiempo consumido por el algoritmo original.
CINTA SUBURETRALTRANSOBTURATRIZ (TOT) EN LA INCONTINENCIA URINARIA DE ESFUERZO: CONTINENCIA A MEDIANO PLAZO Y EVOLUCIóN DE LOS SíNTOMAS IRRITATIVOS VESICALES
Donoso O,Manuel; González G,José Antonio; Danilla E,Stefan; Tapia H,Jorge; Morales D,Ignacio; Busquets C,Maritza;
Revista chilena de obstetricia y ginecología , 2007, DOI: 10.4067/S0717-75262007000600003
Abstract: objectives: medium term evaluation of urinary incontinence in patients treated with transobturator tape (tot) compared to burch. marion and kelly technique. method: prospective evaluation of 74 patients with stress urinary incontinence, treated with the mentioned techniques between october 2003 and may 2005 at hospital parroquial of san bernardo. there were 52 tot, 9 burch, 9 marion and 4 kelly surgeries performed. patients were all evaluated by other physician different from the one who made the procedure. flesu/fs;the patients were followed up for an average of 10.6 months for tot, 14,8 months for burch, 11.3 for marion, and 8,6 for kelly. total or partial continence was achieved in 88% of tot, 77% of burch, 62% of marion and 75% of kelly. continence within 18 months was obtained in 80% of tot, 71 % of burch and 40% of marion submitted patients. patients who underwent tot only, had 100% continence rates, significantly higher than those who underwent another associated surgical procedure. micturition urgency disappeared in 82% of tot, 66% of burch, 71% of marion and 100% of kelly surgery. de novo urgency appeared in 12% for tot, 33% for burch and in none of either marion or kelly group. conclusions: the tot surgical technique has excellent rates of urinary continence evaluated at medium term. continence rates are best when tot was performed as the only surgical procedure. urinary irritating symptoms disappear in a good percentage of patients regardless of the surgical technique chosen
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