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Search Results: 1 - 10 of 31253 matches for " Luis Reinaldo; "
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TRANSMISIóN DE TASAS DE INTERéS BAJO EL ESQUEMA DE METAS DE INFLACIóN: EVIDENCIA PARA COLOMBIA
Becerra,óscar Reinaldo; Melo Velandia,Luis Fernando;
Cuadernos de economía , 2009, DOI: 10.4067/S0717-68212009000100005
Abstract: this paper describes the dynamics of the monetary policy decisions enacted by the central bank of colombia and the transmission to other interest rates, in order to identify the effectiveness and backwardness of such monetary policy measures. based on a theoretical model, a vecx-mgarch model is used to analyze the interactions among different interest rates and model the relationship between the volatilities of the endogenous variables of the model. impulse-response functions suggest that the effect of a monetary shock on interest rates closely follow the objectives set by the central bank, both in sign and magnitude.
TRANSMISIóN DE TASAS DE INTERéS BAJO EL ESQUEMA DE METAS DE INFLACIóN: EVIDENCIA PARA COLOMBIA
óscar Reinaldo Becerra,Luis Fernando Melo Velandia
Cuadernos de Economía , 2009,
Abstract: Este documento estudia la dinámica de la transmisión de las medidas de política monetaria implementadas por el Banco Central (Banco de la República) hacia las demás tasas de interés, con el fin de identificar la efectividad y el rezago que tienen las medidas de política monetaria. A partir de un modelo teórico se plantea un modelo VECX-MGARCH, para analizar las interacciones entre los niveles de las tasas de interés y modelar las relaciones entre las volatilidades de las variables endógenas del modelo. Los resultados sugieren que el esquema de transmisión de política monetaria vía tasas de interés opera de acuerdo a lo esperado. El análisis derivado de las funciones de impulso-respuesta sugiere que el efecto de un shock monetario sobre las tasas de interés sigue de cerca los objetivos planteados por el Banco Central, tanto en signo como en magnitud. This paper describes the dynamics of the monetary policy decisions enacted by the Central Bank of Colombia and the transmission to other interest rates, in order to identify the effectiveness and backwardness of such monetary policy measures. Based on a theoretical model, a VECX-MGARCH model is used to analyze the interactions among different interest rates and model the relationship between the volatilities of the endogenous variables of the model. Impulse-response functions suggest that the effect of a monetary shock on interest rates closely follow the objectives set by the Central Bank, both in sign and magnitude.
Diferencias en la aterosclerosis coronaria entre hombres y mujeres con Diabetes Mellitus tipo 2 evaluados con el Score de Gensini Differences in coronary atherosclerosis assessed with the Gensini score between men and women with type 2 Diabetes
Luis Gajardo,Eduardo Lecannelier,Reinaldo Venegas,Luis Pérez
Revista Chilena de Cardiología , 2012,
Abstract: Antecedentes y Objetivos: Las mujeres diabéticas tienen mayor morbi-mortalidad asociada a eventos coronarios isquémicos que los hombres. Este estudio describe la extensión, magnitud y severidad de la ateros-clerosis coronaria entre hombres y mujeres con diabetes mellitus tipo 2. Métodos: Estudio de tipo descriptivo que incluyó a 162 pacientes diabéticos consecutivos con sospecha de aterosclerosis coronaria y estudiados con coronariogra-fía. La magnitud de la aterosclerosis fue cuantificada utilizando el Score de Gensini. Resultados: La edad promedio fue 64.8 a os. Noventa y cuatro eran mujeres (58.0%). El tiempo de evolución de la diabetes fue mayor para mujeres que para hombres (152.1 ± 90.0 vs 120.2 ± 99.4 meses) respectivamente (p<0.05). Las mujeres tuvieron un índice de masa corporal (30.5 ± 5.1), superior al de los hombres (28.5 ± 5.2) (p<0.05). La aterosclerosis coronaria significativa estuvo presente en el 61.7% de toda la población diabética, siendo en hombres de 76.5% versus 51.5% en mujeres (odds ratio: 1.5). El número de placas ateroscle-róticas fue 195 en 68 hombres (2,86 placa/paciente) y de 168 en 94 mujeres (1,78 placa/paciente) (p<0.0043). La presencia de aterosclerosis significativa en 1, 2 y 3 vasos se observó en el 7.4%; 17.6% y 51.5% de los hombres, respectivamente, versus el 12.8%; 10.6% y 27.7% en las mujeres, (p<0.0002). La magnitud de la enfermedad coronaria medida con el Score de Gensini fue 69.4 ± 66.7 en hombres versus 35.6 ± 47.3 en mujeres (p<0.005). Conclusión: En este estudio observamos que hombres diabéticos tienen mayor extensión, magnitud y severidad de aterosclerosis coronaria que las mujeres diabéticas. Diabetic women have higher morbidity and mortality associated with ischemic coronary events than diabetic men, but the extension of coronary artery disease in both groups is less well established. Aim: to compare the extension, magnitude and severity of coronary atherosclerosis between men and women with type 2 diabetes mellitus. Method: 162 consecutive diabetic patients with suspected coronary atherosclerosis studied by coronary angiography were included. The magnitude of atherosclerosis was quantified using the Gensini Score. Results: The average age was 64.8 years. Ninety-four patients were women (58.0%). Diabetes was present for 152 ± 90.0 months for women and 120 ± 99.4 months for men (p <0.05). Women had a higher body mass index (30.5 ± 5.1) than men (28.5 ± 5.2, p<0.05). The presence of significant coronary atherosclerosis in the entire diabetic population was of 61.7%: 76.5% in men and 51.5% in women (OR 1.5).
Estudio Descriptivo Macro y Mesoscópico de la Irrigación de Piezas Dentarias Superiores en Perro (Canis familiaris) Mediante Repleción con Tinta China
Borroni,Cintya; Concha,Ismael; Córdova,Luis; Soto,Reinaldo;
International Journal of Morphology , 2006, DOI: 10.4067/S0717-95022006000500006
Abstract: the irrigation of upper teeth is described macro and mesoscopically in their facial third (incisive and canine teeth) through repletion with chinese tint. thirty heads of corpses of dogs were used, which were divided in three equal groups. group i was injected with blue chinese ink via facial artery, group ii with yellow chinese ink via maxillary artery, and the group iii with blue and yellow chinese ink via facial and maxillary artery respectively and simultaneously. in the heads, already fixed and conserved, the arrival of the colour of the injected ink was macroscopically analyzed up to the level of the gingiva associated to the upper right incisive and canine teeth; subsequently, the heads were frozen to make them cross sections, which were analyzed mesoscopically, where the arrival of the injected ink was observed up to the level of the alveolus and pulpar cavity of the teeth under study. the present research demonstrated that the facial artery is distributed to deep-lying tissues such as gingiva, alveolus, and pulpar cavity of the upper right incisive and canine teeth in dogs; therefore, it would be contributing to its complementary irrigation, the participation of the branches of the maxillary artery in the irrigation of these tissues, and, finally, it demonstrated that the branches of the facial and maxillary artery anastomose themselves to irrigate tissues they have in common, as the ones that were already mentioned. these results allow us knowing the origin of the revascularization of the upper and periodontal teeth in dogs, after surgical procedures that could damage some branches of maxillary artery. due to the anatomic similarity of human being's oral cavity and the oral cavity of dogs, the already described results could be used as reference to explain the origin of the revascularization of upper and periodontal teeth, after orthognathic surgery
EVALUACIóN DE COMPOST OBTENIDO EN PILA MóVIL EMPLEANDO MEZCLAS DE GALLINAZA DE JAULA CON MATERIAL CELULóSICO
HOYOS,JOSé LUIS; VARGAS,CARLOS ALBERTO; VELASCO,REINALDO J;
Biotecnología en el Sector Agropecuario y Agroindustrial , 2010,
Abstract: in this study it was evaluated the process of composting from poultry manure, and the effect of the mixture with different proportions of cellulose material on the chemical and physical composition of compost. a process of fermentation in mobile pile was evaluated with capacity of 621 m3/pile. some samples were daily taken in order to measure temperature, humidity and ph, at the end of the process physical and chemical analysis were made in order to determine the quality of the product, which was analyzed according to the ntc 5167 about organic fertilizers in colombia. a design was made complete/y at random (dca) with a witness group identified as "blanco" and three treatments with two replicas for each one, a mixture of poultry manure and sawdust plus wood shavings with a relation c/n of 21:1 (t1 current condition "blanco"), 25:1 (12), 27.5:1 (t3) and 30:1 (t4) respectively. the process of composting was produced during 45 days for every treatment. as for humidity, no treatment reached the value established by the ntc 5167 (<20%). in the same way in the scale of ph a rising is showed which reports values over 8.5 in every treatment, which confirms the instability of the compost at the end of the process. the values in the relationship carbon/nitrogen were adapted, in the four treatments, to this kind of organic fertilizer, these four treatments also presented acceptable values according to the ntc 5167, a capacity of water retention, apparent density ashes and organic matter. the capacity of cationic exchange presented significant differences (p< 0.05) to the treatment t4, which according to the ntc 5167 should be minimum of 30 meq/10ogr, alternative that did not achieve this valur because of the excess of cellulose material present in the womb of the process which leads to a decrease of the biological activity due to the lack ofnutrients in its environment.
Renal involvement in prolonged salmonella bacteremia: the role of schistosomal glomerulopathy
Martinelli, Reinaldo;Pereira, Luis Jose Cardoso;Brito, Edilson;Rocha, Heonir;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1992, DOI: 10.1590/S0036-46651992000300002
Abstract: renal involvement has been well documented in patients with hepatosplenic schistosomiasis and in patients with prolonged salmonella bacteremia (psb). whether there is a specific renal lesion related to psb or the chronic bacterial infection aggravates a pre-existing schistosomal glomerulopathy has been a matter of controversy. to analyze the clinical manifestations and histopathological findings of the renal involvement, 8 patients with hepatosplenic schistosomiasis and psb (group i) were compared with 8 patients with schistosomal glomerulopathy (group ii) matched by sex and glomerular disease. the mean age in group i was 17.7 years. all patients presented with hematuria, in 4 cases associated with non-nephrotic proteinuria. in group ii the mean age was 23 years; nephrotic syndrome was the clinical presentation in 7 of the 8 patients in the group. all patients in group i experienced remission of the clinical and laboratory abnormalities as the salmonella infection was cured; in group ii the patients had persistent, steroid-resistant, nephrotic syndrome. on histological examination, no difference was noted between the two groups, except for pronounced glomerular hypercellularity and interstitial mononuclear cell infiltration in group i. these observations strongly suggest that psb exacerbates a pre-existing sub-clinical schistosomal glomerulopathy by the addition of active lesions directly related to the prolonged bacteremia
Acceso radial durante la angioplastía primaria en el infarto agudo al miocardio Radial artery access to perform primary angyoplasty in acute myocardial infarction
Luis Pérez,Reinaldo Venegas,Eduardo Lecannelier,álvaro Salda?a
Revista Chilena de Cardiología , 2011,
Abstract: Introdución: El acceso radial (AR) ha demostrado reducir las complicaciones vasculares asociadas a la coronariografía y angioplastía coronaria; sin embargo, su rol en la angioplastía primaria (AP) durante el infarto agudo al miocardio con supradesnivel del segmento ST (IAM c/SDST) es muy escasa. En diciembre de 2007, nuestro equipo adoptó esta técnica como primera opción durate la AP Objetivo. Estudiar si el AR durante la AP es tan rápido y seguro como el acceso femoral (AF). Métodos: Utilizando el registro de nuestro laboratorio, analizamos todos los pacientes con IAM c/SDST que fueron tratados con AP en nuestro hospital en el período Septiembre 2005 - Agosto 2009, y luego de identificar los pacientes de acuerdo al AF y AR, comparamos el tiempo "puerta-balón", los resultados an-giográficos, el éxito clínico y las complicaciones relacionadas al acceso. El seguimiento se efectuó a través de las visitas médicas y vía telefónica. Los valores se muestran como promedio ± DS. Resultados: En el periodo estudiado, en 354 (75%) pacientes se utilizó AF y en 118 (25%) el AR. La edad promedio de ambos grupos fue similar, 61±12 a os en el grupo con AF vs 62±12 a os en AR (p=ns) y no hubo diferencias en las características clínicas de los grupos. El tiempo "puerta-balón" fue 62±37 minutos vs 61±29 minutos en AF y AR respectivamente (p=ns) con una tasa de éxito superior al 94% en ambo grupos. En el grupo de AF hubo 3% de complicaciones vasculares vs 0% en AR. La mortalidad global a 30 días fue 5,1 % en el grupo de AF y de 4,0% en AR (p=ns). Conclusión: El acceso radial para la AP permite abrir la arteria culpable en tiempos similares al AF y con una menor incidencia de complicaciones vasculares. Background: Radial access (RA) has been shown to help reduce vascular complications of coronary ar-teriography and angioplasty (PTCA). However, little experience has been reported with RA to perform primary PTCA in ST elevation acute myocardial infarction (STEMI). Since December 2007, we selected RA as a first option for primary PTCA in STEMI. Aim: to determine whether RA is as effective, safe and expeditious as femoral access (FA) in primary PTCA for STEMI Method: we performed a retrospective review of our database of all patients undergoing primary PTCA in our laboratory from Sept 2005 through August 2009. We compared all patients who had a PTCA using a FA to those in whom the RA was used. The door to balloon time, angiographic results, clinical success rate and complications related to the vascular access were compared between groups. Follow-up was based con clinical visits
Estudio Descriptivo Macro y Mesoscópico de la Irrigación de Piezas Dentarias Superiores en Perro (Canis familiaris) Mediante Repleción con Tinta China Macro and Mesoscopical Study About the Irrigation of the Upper Teeth in Dogs (Canis familiaris) through Repletion With Chinese Ink
Cintya Borroni,Ismael Concha,Luis Córdova,Reinaldo Soto
International Journal of Morphology , 2006,
Abstract: Se describe macro y mesoscópicamente la irrigación de piezas dentarias superiores en su tercio rostral (incisivos y canino) en perro, mediante repleción con tinta china. Se utilizaron 30 cabezas de cadáveres de perro, divididas en tres grupos de igual número. El grupo I fue inyectado con tinta china azul vía arteria facial, el grupo II con tinta amarilla vía arteria maxilar y el grupo III con tinta azul y amarilla vía arteria facial y arteria maxilar respectivamente y en forma simultánea. En las cabezas, ya fijadas y conservadas, se analizó macroscópicamente la llegada del color de la tinta china inyectada a nivel de la gíngiva asociada a dientes incisivos y canino superior derecho. Posteriormente, las cabezas se congelaron para realizarles cortes transversales, los que fueron analizados mesoscópicamente, donde se observó la llegada de la tinta china, a nivel de los alvéolos y cavidad pulpar de las piezas dentarias en estudio. La presente investigación demostró que la arteria facial se distribuye hacia tejidos profundos como gíngiva, alvéolos y pulpa de los dientes incisivos y canino superior derecho en perro, por lo tanto, estaría aportando a su irrigación complementaria; se reafirmó la participación de ramas de la arteria maxilar en la irrigación de estos mismos tejidos y finalmente se demostró que ramas de las arterias facial y maxilar se anastomosan para irrigar tejidos en común, como los ya mencionados. Estos resultados permiten conocer el origen de la revascularización de piezas dentarias superiores y periodonto en perro, luego de procedimientos quirúrgicos que pudiesen da ar ramas de la arteria maxilar. Debido a la similitud anatómica de la cavidad oral entre el perro y el humano, los resultados descritos se podrían utilizar como referencia para explicar el origen de la revascularización de piezas dentarias superiores y periodonto, luego de la cirugía ortognática The irrigation of upper teeth is described macro and mesoscopically in their facial third (incisive and canine teeth) through repletion with Chinese tint. Thirty heads of corpses of dogs were used, which were divided in three equal groups. Group I was injected with blue Chinese ink via facial artery, group II with yellow Chinese ink via maxillary artery, and the group III with blue and yellow Chinese ink via facial and maxillary artery respectively and simultaneously. In the heads, already fixed and conserved, the arrival of the colour of the injected ink was macroscopically analyzed up to the level of the gingiva associated to the upper right incisive and canine teeth; subsequently, the
Presentación
Reinaldo Rodríguez Cami?o,Iraida Rodríguez Luis
Revista Cubana de Enfermer?-a , 1998,
Abstract:
A Tool for Fast Development of Modular and Hierarchic Neural Network-based Systems
Francisco Reinaldo,Mauro Roisenberg,Rui Camacho,Luis Paulo Reis
Revista Eletr?nica de Sistemas de Informa??o , 2006,
Abstract: This paper presents PyramidNet tool as a fast and easy way to develop Modular and Hierarchic Neural Network-based Systems. This tool facilitates the fast emergence of autonomous behaviors in agents because it uses a hierarchic and modular control methodology of heterogeneous learning modules: the pyramid. Using the graphical resources of PyramidNet the user is able to specify a behavior system even having little understanding of artificial neural networks. Experimental tests have shown that a very significant speedup is attained in the development of modular and hierarchic neural network-based systems by using this tool.
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