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Search Results: 1 - 10 of 51914 matches for " Carlos Pellegrini "
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Management of Unsuspected Gallbladder Cancer in the Era of Minimally Invasive Surgery  [PDF]
Patrick Wolf, Puneet Bhargava, Carlos Pellegrini, Peter C. Wu
Journal of Cancer Therapy (JCT) , 2010, DOI: 10.4236/jct.2010.13024
Abstract: Gallbladder cancer is the most common malignant tumor of the biliary tract and often diagnosed incidentally during laparoscopic cholecystectomy for gallbladder disease. This underscores the importance of considering the diagnosis of gallbladder cancer when confronted with atypical findings and understanding cancer management guidelines that may impact patient outcome. Potentially curable early stage gallbladder lesions are often missed during preoperative workup and discovered incidentally during difficult cholecystectomy or afterwards on pathologic diagnosis. We will review current strategies to diagnose early stage disease and discuss clinical management issues to optimize the outcome of patients with gallbladder cancer.
Hypopigmented Mycosis Fungoides in a 7-Year-Old Boy  [PDF]
Felipe Nazareth, Maria Victoria Quaresma, Fred Bernardes, Carlos Gustavo Carneiro Castro, Edilbert Pellegrini Nahn, Jose Augusto da Costa Nery, Mayra Carrijo Rochael, Omar Lupi
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2012, DOI: 10.4236/jcdsa.2012.22015
Abstract: Hypopigmented mycosis fungoides (HMF) is an uncommon variant of cutaneous T-cell lymphoma. It is more frequent in dark-skinned people, particularly children. The HMF diagnose is difficult, especially in early stages because this condition resembles benign skin diseases. Thus is histopathological analysis very important for the diagnosis. We report a case of a 7-year-old child with widespread HMF confirmed by histopathology that showed cells tagging along the dermal/epidermal junction and extending into the epidermis in a pattern of epidermotropism and focal cell aggregates in the epidermis (Pautrier’s microabscess). We demonstrate the importance of clinical suspicion for this cutaneous neoplasia in patients with hypopigmentated lesions.
EXERGOECONOMIC COMPARISON OF ABSORPTION REFRIGERATION SYSTEMS INCLUDING A HIBRID ABSORPTION-EJECTO COMPRESSION CHILLER
BURBANO JARAMILLO,JUAN CARLOS; PELLEGRINI,LUIZ FELIPE; DE OLIVEIRA JR,SILVIO;
DYNA , 2011,
Abstract: the study of absorption refrigeration systems has had increasing importance in recent years due to the fact that the primary energy that is used in an absorption system can be heat available from a residual source or even a renewable one. therefore, these systems not only use energy that would be rejected by the environment, but also they avoid the consumption of expensive fossil or electrical energies. the production cost of the mechanical work necessary to obtain a kw of refrigeration for mechanical compression cycle is normally higher than the cost for recovering the needed heat to obtain the same kw in an absorption cycle. also, the use of these systems reduces impact on the environment by decreasing the emission of co2. we intend to show the performance of a hybrid absorption-ejecto compression chiller compared to conventional double- and single-effect water/lithium bromide systems, by means of an exergetic and exergoeconomic analysis of these configurations in order to calculate the exergy-based cost of a final product. the vapor compression refrigeration system is included in the results, as a comparisson to the performance of the absorption refrigeration systems analyzed.
Nitrate and ammonium in soil solution in tobacco management systems
Kaiser, Douglas Rodrigo;Reinert, Dalvan José;Reichert, José Miguel;Streck, Carlos Arnoldo;Pellegrini, André;
Revista Brasileira de Ciência do Solo , 2010, DOI: 10.1590/S0100-06832010000200011
Abstract: tobacco farmers of southern brazil use high levels of fertilizers, without considering soil and environmental attributes, posing great risk to water resources degradation. the objective of this study was to monitor nitrate and ammonium concentrations in the soil solution of an entisol in and below the root zone of tobacco under conventional tillage (ct), minimum tillage (mt) and no-tillage (nt). the study was conducted in the small-watershed arroio lino, in agudo, state of rio grande do sul, brazil. a base fertilization of 850 kg ha-1 of 10-18-24 and topdressing of 400 kg ha-1 of 14-0-14 npk fertilizer were applied. the soil solution was sampled during the crop cycle with a tension lysimeter equipped with a porous ceramic cup. ammonium and nitrate concentrations were analyzed by the distillation and titration method. nitrate concentrations, ranging from 8 to 226 mg l-1, were highest after initial fertilization and decreased during the crop cycle. the average nitrate (n-no3-) concentration in the root zone was 75 in nt, 95 in mt, and 49 mg l-1 in ct. below the root zone, the average nitrate concentration was 58 under nt, 108 under mt and 36 mg l-1 under ct. the nitrate and ammonium concentrations did not differ significantly in the management systems. however, the nitrate concentrations measured represent a contamination risk to groundwater of the watershed. the ammonium concentration (n-nh4+) decreased over time in all management systems, possibly as a result of the nitrification process and root uptake of part of the ammonium by the growing plants.
Diferentes métodos de controle de plantas indesejáveis em pastagem nativa
Pellegrini, Luiz Giovani de;Nabinger, Carlos;Carvalho, Paulo César de Faccio;Neumann, Mikael;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000600005
Abstract: the study was conducted in a representative native pasture area in the transition between the serra do sudeste and depress?o central of rs. the main undesirable species were represented by: carqueja (baccharis trimera (less.) dc.), caraguatá (eryngium horridum (spreng.) less.) and alecrim (vernonia nudiflora less). it was evaluated the initial effect (until 60 days after application) of two methods of controlling undesirable plants on forage production, vegetation dynamics, and control efficiency: t1 - without control (control, sc), t2 - mechanical control (mechanic control, cm) and t3 - chemical control (commercial herbicide composed by picloram (64 g/l) + 2.4-d (240 g/l), in the dosage of 5 l commercial product/ha, cq). the treatments were organized in a complete block design, with four replications. there were no differences among treatments for the green dry matter of grasses and total dm. the forage legume biomass differed among treatments, with values of 587.9, 472.0 and 0 kg/ha of dm in the cm, cq and sq, respectively. the control efficiency of undesirable species in this study was 76.2% for cq and 27.9% for cm when compared to sc. the species control efficiency, in terms of frequency of pasture components, showed that the cm treatment was not efficient at 60 days after treatment application in the control of vernonia nudiflora (alecrim) in the second touch (-27.7%) and eryngium horridum (caraguatá) in the first touch (-30.0%).
EXERGOECONOMIC COMPARISON OF ABSORPTION REFRIGERATION SYSTEMS INCLUDING A HIBRID ABSORPTION-EJECTO COMPRESSION CHILLER
JUAN CARLOS BURBANO JARAMILLO,LUIZ FELIPE PELLEGRINI,SILVIO DE OLIVEIRA JR.
DYNA , 2011,
Abstract: El estudio de los sistemas de refrigeración por absorción ha tomado una importancia creciente en los últimos a os, ya que la energía primaria que es usada en un sistema de absorción puede ser calor disponible de una fuente residual o de una renovable. Por lo tanto, estos sistemas no sólo usan energía que sería rechazada al ambiente sino también, evitan el consumo de energías fósiles o eléctricas costosas. El costo de producción de trabajo mecánico necesario para obtener un kW de refrigeración para el ciclo de compresión mecánico es, normalmente, más alto que el costo para recuperar el calor necesario para obtener el mismo kW en un ciclo de absorción. También, el uso de estos sistemas reduce el impacto ambiental disminuyendo la emisión de CO2. Este artículo pretende mostrar el desempe o de un chiller híbrido de absorción-eyecto compresión comparado con sistemas de absorción convencionales de agua/bromuro de litio de simple y doble efecto, por medio de un análisis exergético y exergoeconómico de estas configuraciones a fin de calcular el costo con base exergética del producto final. Fue incluido un sistema de refrigeración por compresión de vapor en los resultados, como comparación del desempe o con los sistemas de refrigeración por absorción analizados.
Gabriela Mistral entre el quicio y el umbral
Pellegrini,Marcelo;
Acta literaria , 2007, DOI: 10.4067/S0717-68482007000200003
Abstract: this article propposes a reading of mistral's oeuvre focusing on death not as a topic but as a concept that the poet invented so her readers could recognize themselves in it. more than her sexuality or her sexual preferences, what's important is to read this poet's production as a reflection on a human fact for which we apparently have no words to describe. mistral's poetry, however, especially in her book tala, is rich with words that portray death as a metaphor for a voyage. to walk, at least partially, this voyage's road, is the purpose of this pages
Realismo: postura e método
Pellegrini, Tania
Letras de Hoje , 2007,
Abstract: N o possui resumo
Obras selectas de Pedro Lastra In memoriam Eugenio Montejo
MARCELO PELLEGRINI
Acta Literaria , 2008,
Abstract:
Gabriela Mistral entre el quicio y el umbral Gabriela Mistral between the limit and the threshold
Marcelo Pellegrini
Acta Literaria , 2007,
Abstract: Este artículo propone leer la poesía de Gabriela Mistral concentrándose en la muerte no como tema, sino como un concepto que la poeta inventó para que sus lectores se (re)conocieran en ella. Más que su sexualidad, más que sus preferencias sexuales, lo que importa es leer la obra de esta poeta como una reflexión sobre un hecho para el que aparentemente no tenemos palabras. Su poesía, sin embargo, en especial en el libro Tala, es rica en palabras que retratan la muerte como metáfora del viaje. Recorrer ese camino, al menos en parte, es el propósito de estas páginas This article propposes a reading of Mistral's oeuvre focusing on death not as a topic but as a concept that the poet invented so her readers could recognize themselves in it. More than her sexuality or her sexual preferences, what's important is to read this poet's production as a reflection on a human fact for which we apparently have no words to describe. Mistral's poetry, however, especially in her book Tala, is rich with words that portray death as a metaphor for a voyage. To walk, at least partially, this voyage's road, is the purpose of this pages
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