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Search Results: 1 - 10 of 213005 matches for " Eduardo G. Grünwaldt "
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Relevamiento socioeconómico de los puestos de la Cuenca del Arroyo Maure, Mendoza, Argentina
Eduardo G. Grünwaldt,M. F. Pesalaccia,C. Pedone
Multequina , 1995,
Abstract: Los objetivos del presente trabajo fueron identificar el número de puestos en los que se realiza alguna actividad pecuaria; cantidad de población y permanencia en el lugar; analizar el proceso de ocupación de la tierra; relevar la condición de sus viviendas y servicios; censar la cantidad y especie de animales criados. Para lograr los objetivos propuestos se siguió la vía inductiva, realizando encuestas a la población residente. En la cuenca existen 12 puestos con un total de 44 pobladores, de los cuales 52% son activos. Los puestos ubicados en la parte alta de la cuenca tienen más de 30 y los restantes menos de 5 a os de antigüedad. Ningún puestero es propietario de la tierra y sus viviendas son de materiales diversos. La población animal está constituida por 84 porcinos; 335 equinos; 15 bovinos y 157 caprinos. Las 3 últimas especies equivalen a 450 U.A. que pastorean en las 5.000 ha de la cuenca, aproximadamente 1 U.A. cada 12 ha, con una cobertura vegetal en torno al 50%.
Asentamientos humanos en la cuenca arroyo Maure (Mendoza)
Eduardo G. Grünwaldt,C. Pedone,M. F. Pesalaccia
Multequina , 1994,
Abstract:
Rentabilidad del engorde a corral de bovinos de carne en la provincia de Mendoza, Argentina
Grünwaldt,Eduardo Guillermo; Guevara,Juan Carlos;
Revista de la Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo , 2011,
Abstract: feedlot profitability was determined under different production and economic scenarios for cattle prices in 2009 and 2010. the basic data came from surveys in feedlots, interviews with key informants and bibliographical consult. internal rate of return and net present value were estimated considering 12% as annual capital opportunity cost. total capital varied in relation to total purchase or partial production of food. the incomes from 3,000 animals year-1 increased by 50% in the year 2010 compared to 2009. in the year 2009, without compensations, there was no profitability when the foods for cattle were purchased. with 5, 10 and 15% increases in investments and operating costs, profitability was attained with 4,466, 6,214 and 9,670 animals year-1, respectively, when the foods were purchased, and with 2,110, 2,430 and 2,880 animals year-1, respectively, when the foods were produced. cattle prices for 2010 compared to those of 2009 increased profitability without compensations using either purchased or produced food. for reaching profitability in year 2010, a total of 2,300 and 1,500 animals year-1 were necessary when the foods were purchased or produced, respectively. the hypothesis that profitability depends on production scale associated with the considered scenarios was verified.
Rentabilidad de la actividad conjunta de recría y engorde a corral de bovinos para carne en la provincia de Mendoza, Argentina
Grünwaldt,Eduardo Guillermo; Guevara,Juan Carlos;
Revista de la Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo , 2012,
Abstract: the economic feasibility of the post - weaning - feedlot of beef cattle was determined for the mendoza province. the hypothesis that the feedlot profitability can improve if this activity is integrated with the post-weaning was postulated. the analyzed alternatives were: a) surface irrigation and alfalfa roll preparation with contractor (alternative 1.1) or with own machinery (alternative 1.2) and b) irrigation by sprinkler with a cannon and alfalfa roll preparation with contractor (alternative 2.1) or with own machinery (alternative 2.2). effective prices in april 2011 were used for valuing investments, operating costs and incomes. the number of annual animals necessary for reaching profitability in those alternatives, with and without receiving the provincial compensation was determined. the internal rate of return was estimated considering 12% as annual capital opportunity cost. the feedlot profitability improved when it was integrated with the post-weaning. the economic unit of the combined activity varied from 446 (alternative 1.1, with compensation) to 708 animals per year (alternative 2.2, without compensation). the equipment for alfalfa roll preparation and sprinkler irrigation provide direct benefits: autonomy for roll preparation and greater irrigation efficiency, and indirect benefits: additional incomes for the provision of services of roll preparation to third parties.
Influencia de factores epidemiológicos en la progresión de la fibrosis en la hepatitis crónica C
Vilar Gómez,Eduardo; Grá Oramas,Bienvenido; Llanio Navarro,Raimundo; Arús Soler,Enrique;
Revista Cubana de Medicina , 2003,
Abstract: approximately 80 % of hepatitis c evolves to chronicity. the epidemiological and viral factors as well as those of the guest take part in the progression of the disease. the behavior of the epidemiological variables associated with chronic hepatitis c was described and the possible association of these ones with the intensity of fibrosis was identified. 80 patients with hepatitis c were studied and the intensity of fibrosis was determined by the metavir scoring system. they were grouped into absence or little fibrosis (f0-f1) and marked fibrosis (f2-f4) seeking for the possible statistical association with the epidemiological factors. a significant association was found among the infection's oldness estimate, the way it was acquired, the patient's age on catching it and the intensity of fibrosis. the progression of hepatits c may be determined by some epidemiological factors influencing decisively the natural history of the disease.
Bases fisiopatológicas de la insuficiencia hepática aguda
Vilar Gómez,Eduardo; Grá Oramas,Bienvenido; Llanio Navarro,Raimundo; Arús Soler,Enrique;
Revista Cubana de Medicina , 2004,
Abstract: a review was made to explain how the diverse cellular processes occurring in the severely damaged liver tissue and in the mesenteric circulation influence on the different systemic alterations appearing in acute liver failure, and the close relation existing among them. the acute liver failure is a clinical syndrome resulting from a mass liver necrosis generating progressive dysfunction of the organ with the presence of deep alterations in its detoxicating, metabolic, sinthesizing and excreting functions.the hypothesis of critical mass, as well as that on endotoxins-cytokines and vasoactive substances explain somehow the different molecular changes supporting the physiopathological bases of this complex entity.
Tratamiento prolongado con interferón alfa-2b más lamivudina en pacientes con hepatitis crónica B y antígeno e positivo Prolonged treatment with alpha-2b interferon plus lamivudine in patients with e antigen positive chronic hepatitis B
Eduardo Vilar Gómez,Bienvenido Grá Orama,Enrique Arús Soler,Caridad Ruenes Domech
Revista Cubana de Medicina , 2007,
Abstract: Las tasas de seroconversión del antígeno e alcanzadas con los antivirales actuales no sobrepasan el 35 %. La combinación de inmunomodulador y antiviviral ha sido teóricamente la estrategia más aceptada en los últimos a os; sin embargo, los resultados en la práctica clínica han sido contradictorios. Se realizó el presente trabajo para evaluar la eficacia y seguridad de un esquema de tratamiento prolongado durante 52 sem con interferón alfa-2b más lamivudina en pacientes con hepatitis crónica B y antígeno e positivo. Se estudiaron 46 pacientes asignados aleatoriamente: 23 recibieron 150 mg diarios de lamivudina por 4 sem, lamivudina más interferón alfa-2b (10 MU en días alternos) por 24 sem, seguido de lamivudina en la misma dosis y frecuencia hasta completar las 52 sem. Otros 23 recibieron 150 mg diarios de lamivudina por 4 sem y lamivudina más interferón alfa-2b (5 MU en días alternos) durante 52 sem. Se encontró que las tasas de seroconversión del antígeno fueron similares en ambos grupos. Una proporción significativa de pacientes con tratamiento combinado prolongado logró negativizar el ADN viral (52 % frente al 26 %, p=0,06) y el antígeno de superficie (48 % frente al 26 %, p=0,11), comparado con los controles. La mejoría en el índice de actividad histológica fue observada en el 48 % de los pacientes tratados con tratamiento combinado prolongado frente al 22 % de los controles (p=0,06). Se concluyó que el tratamiento prolongado deerferón y lamivudina durante 52 sem puede brindar beneficios clínicos en las tasas de pérdida sostenida del ADN viral, el antígeno de superficie y en el índice de actividad histológica. The seroconversion rates of e antigen attained with the current antivirals do not exceed 35 %. The combination of immunomodulator and antiviral has been theoretically the most accepted strategy in the last five years; however, the results in clinical practice have been contradictory. This paper is aimed at evaluating the efficacy and security of a treatment scheme prolonged for 52 weeks with alpha-2b interferon plus lamivudine in patients with e antigen positive chronic hepatitis B. 46 patients selected at random were studied: 23 received 150 mg of lamivudine daily during 4 weeks, lamivudine plus alpha-2b (10 MU every other day) for 24 weeks, followed by lamivudine in the same dose and frequency until completing the 52 weeks. Other 23 were administered 150 mg of lamivudine daily for 4 weeks plus alpha 2b interferon (5 MU every other day) during 52 weeks. It was found that the antigen seroconversion rates were similar in both groups. A marked
Influencia de factores epidemiológicos en la progresión de la fibrosis en la hepatitis crónica C
Eduardo Vilar Gómez,Bienvenido Grá Oramas,Raimundo Llanio Navarro,Enrique Arús Soler
Revista Cubana de Medicina , 2003,
Abstract: Aproximadamente 80 % de la hepatitis C evoluciona a la cronicidad. Factores como los epidemiológicos, virales y del huésped intervienen en la progresión de la enfermedad. Se describió el comportamiento de variables epidemiológicas asociadas a la hepatitis crónica C y se identificó la posible asociación de estas con la intensidad de la fibrosis. Se estudiaron 80 pacientes con hepatitis C. Se determinó la intensidad de la fibrosis por el sistema de puntuación METAVIR. Se agruparon en: ausencia o poca fibrosis (F0-F1) y fibrosis marcada (F2 a F4) buscando la posible asociación estadística con los factores epidemiológicos. Se halló asociación significativa entre el estimado de antigüedad de la infección, la vía de adquisición y la edad al contraerla con la intensidad de la fibrosis. La progresión de la hepatitis C puede estar determinada por algunos factores epidemiológicos que influyen de forma decisiva en la historia natural de la enfermedad. Approximately 80 % of hepatitis C evolves to chronicity. The epidemiological and viral factors as well as those of the guest take part in the progression of the disease. The behavior of the epidemiological variables associated with chronic hepatitis C was described and the possible association of these ones with the intensity of fibrosis was identified. 80 patients with hepatitis C were studied and the intensity of fibrosis was determined by the METAVIR scoring system. They were grouped into absence or little fibrosis (f0-F1) and marked fibrosis (F2-F4) seeking for the possible statistical association with the epidemiological factors. A significant association was found among the infection's oldness estimate, the way it was acquired, the patient's age on catching it and the intensity of fibrosis. The progression of hepatits C may be determined by some epidemiological factors influencing decisively the natural history of the disease.
Bases fisiopatológicas de la insuficiencia hepática aguda Physiopathological bases of acute liver failure
Eduardo Vilar Gómez,Bienvenido Grá Oramas,Raimundo Llanio Navarro,Enrique Arús Soler
Revista Cubana de Medicina , 2004,
Abstract: Se hace una revisión para explicar cómo influyen y la estrecha relación que tienen los diversos procesos celulares que ocurren en el tejido hepático, severamente da ado, y en la circulación mesentérica con las distintas alteraciones sistémicas que aparecen en la insuficiencia hepática aguda, síndrome clínico resultado de una necrosis hepática masiva que genera disfunción progresiva del órgano con la presencia de profundas alteraciones en sus funciones detoxificadora, metabólica, sintetizadora y excretora. La hipótesis de la masa crítica, así como la de las endotoxinas-citoquinas y sustancias vasoactivas explican de cierta forma los diferentes cambios moleculares que sustentan las bases fisiopatológicas de esta compleja entidad. A review was made to explain how the diverse cellular processes occurring in the severely damaged liver tissue and in the mesenteric circulation influence on the different systemic alterations appearing in acute liver failure, and the close relation existing among them. The acute liver failure is a clinical syndrome resulting from a mass liver necrosis generating progressive dysfunction of the organ with the presence of deep alterations in its detoxicating, metabolic, sinthesizing and excreting functions.The hypothesis of critical mass, as well as that on endotoxins-cytokines and vasoactive substances explain somehow the different molecular changes supporting the physiopathological bases of this complex entity.
Tratamiento prolongado con interferón alfa-2b más lamivudina en pacientes con hepatitis crónica B y antígeno e positivo
Vilar Gómez,Eduardo; Grá Orama,Bienvenido; Arús Soler,Enrique; Ruenes Domech,Caridad; Dávila González,Yudith;
Revista Cubana de Medicina , 2007,
Abstract: the seroconversion rates of e antigen attained with the current antivirals do not exceed 35 %. the combination of immunomodulator and antiviral has been theoretically the most accepted strategy in the last five years; however, the results in clinical practice have been contradictory. this paper is aimed at evaluating the efficacy and security of a treatment scheme prolonged for 52 weeks with alpha-2b interferon plus lamivudine in patients with e antigen positive chronic hepatitis b. 46 patients selected at random were studied: 23 received 150 mg of lamivudine daily during 4 weeks, lamivudine plus alpha-2b (10 mu every other day) for 24 weeks, followed by lamivudine in the same dose and frequency until completing the 52 weeks. other 23 were administered 150 mg of lamivudine daily for 4 weeks plus alpha 2b interferon (5 mu every other day) during 52 weeks. it was found that the antigen seroconversion rates were similar in both groups. a marked proportion of patients with combined prolonged treatment proved to be negative to the viral dna (52 % vs. 26p = 0.06) and the surface antigen (48 % vs. 26 %, p = 0.11) compared with the controls. the improvement in the histological activity rate was observed in 48 % of the patients treated with combined prolonged treatment against 22 % of the controls (p = 0.06) it was concluded that the prolonged treatment of interferon and lamivudine during 52 weeks may have clinical benefits on the rates of sustained viral dna loss, surface antigen and the histological activity index.
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