oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 144 )

2018 ( 281 )

2017 ( 281 )

2016 ( 381 )

Custom range...

Search Results: 1 - 10 of 220417 matches for " César Espíndola "
All listed articles are free for downloading (OA Articles)
Page 1 /220417
Display every page Item
Huella del Carbono. Parte 2: La Visión de las Empresas, los Cuestionamientos y el Futuro
Espíndola,César; Valderrama,José O;
Información tecnológica , 2012, DOI: 10.4067/S0718-07642012000100018
Abstract: in this second part of the series, the viewpoint of the enterprises and their position with respect to the implementation of carbon footprint (cfp) quantification. the criteria for classification of emissions and the main methodologies for calculating the cfp are discussed and analyzed. the main questions and doubts about the cfp, on the subjects to be discussed and the alternatives of solution. a comparison of the main four methods currently used for determining the cfp and a method named abacus for quantifying emissions of equivalent co2 that allows identifying the common characteristics to all of them. all this can serve as basis for decision-making to adopt a given methodology. it is concluded that if the present situation of confusion of the different approaches to quantify the cfp continues, the companies and governments are loosing a great opportunity to arrive to a new environmentally sustainable economy.
Huella del Carbono. Parte 1: Conceptos, Métodos de Estimación y Complejidades Metodológicas
Espíndola,César; Valderrama,José O;
Información tecnológica , 2012, DOI: 10.4067/S0718-07642012000100017
Abstract: the concept of carbon footprint, its origin, its relation with greenhouse gases and the methods to quantify it are presented and analyzed. the so-called greenhouse effect causes that the energy that reaches the earth at a certain rate is returned to a slower rate, increasing the temperature of the earth surface. additionally, it is nowadays accepted that this effect is produced by some gases that are naturally emitted or produced by human actions. the carbon footprint is considered to be one of the most important tools for quantifying greenhouse emissions and in a general form it represents the quantity of gases emitted to the atmosphere and that is produced by human activities, and by goods and service consumption. since there is no consensus about the definition of carbon footprint or the forms of quantifying it, this first part of the paper series analyzes the main concept and the main present views on the carbon footprint.
Huella del Carbono. Parte 2: La Visión de las Empresas, los Cuestionamientos y el Futuro Carbon Footprint: Part 2: Enterprises Viewpoint, Doubts and the Future
César Espíndola,José O Valderrama
Información Tecnológica , 2012,
Abstract: En esta segunda parte de la serie, se discute sobre la visión y posición que tienen las empresas frente al concepto de Huella del Carbono (HdC) y de los métodos para cuantificarla. Se analiza los criterios de clasificación de emisiones en las principales metodologías de cálculo de la HdC y se discute sobre los principales cuestionamientos a la HdC, sobre los temas a resolver y sus alternativas de solución. Se presenta una base comparativa para los cuatro principales métodos de determinación de HdC actualmente vigentes en el mercado y se propone un método denominado Abaco para la contabilización de emisiones de CO2 equivalente , que permite identificar las características comunes de estos métodos. Todo esto puede servir de base en la toma de decisiones gerenciales para adoptar una determinada metodología. Se concluye que d e mantenerse la falta de claridad y comparabilidad en la determinación de emisiones podría provocar la pérdida de una gran oportunidad para lanzar una nueva economía medio-ambientalmente sostenible. In this second part of the series, the viewpoint of the enterprises and their position with respect to the implementation of carbon footprint (CFP) quantification. The criteria for classification of emissions and the main methodologies for calculating the CFP are discussed and analyzed. The main questions and doubts about the CFP, on the subjects to be discussed and the alternatives of solution. A comparison of the main four methods currently used for determining the CFP and a method named Abacus for quantifying emissions of equivalent CO2 that allows identifying the common characteristics to all of them. All this can serve as basis for decision-making to adopt a given methodology. It is concluded that if the present situation of confusion of the different approaches to quantify the CFP continues, the companies and governments are loosing a great opportunity to arrive to a new environmentally sustainable economy.
Huella del Carbono. Parte 1: Conceptos, Métodos de Estimación y Complejidades Metodológicas Carbon Footprint. Part 1: Concepts, Estimation Methods and Methodological Complexities
César Espíndola,José O Valderrama
Información Tecnológica , 2012,
Abstract: Se presenta y analiza el concepto de huella del carbono, su origen, su relación con los gases efecto invernadero, y sobre los procedimientos para cuantificarla. El efecto invernadero provoca que la energía que llega a la Tierra sea devuelta más lentamente, por lo que es mantenida más tiempo junto a la superficie elevando la temperatura. Es aceptado hoy en día que este efecto es producido por algunos gases liberados en forma natural o por las acciones humanas. La Huella de Carbono es considerada una de las más importantes herramientas para cuantificar las emisiones de gases efecto invernadero y en forma muy general, representa la cantidad de gases efecto invernadero emitidos a la atmósfera derivados de las actividades de producción o consumo de bienes y servicios. Al no existir consenso en cuanto a la definición y menos en la cuantificación de la huella del carbono, la primera parte de este trabajo analiza las principales corrientes y enfoques actuales. The concept of Carbon Footprint, its origin, its relation with greenhouse gases and the methods to quantify it are presented and analyzed. The so-called greenhouse effect causes that the energy that reaches the earth at a certain rate is returned to a slower rate, increasing the temperature of the earth surface. Additionally, it is nowadays accepted that this effect is produced by some gases that are naturally emitted or produced by human actions. The Carbon Footprint is considered to be one of the most important tools for quantifying greenhouse emissions and in a general form it represents the quantity of gases emitted to the atmosphere and that is produced by human activities, and by goods and service consumption. Since there is no consensus about the definition of Carbon Footprint or the forms of quantifying it, this first part of the paper series analyzes the main concept and the main present views on the Carbon Footprint.
Huella de Carbono, un Concepto que no puede estar Ausente en Cursos de Ingeniería y Ciencias
Valderrama,José O; Espíndola,César; Quezada,Rafael;
Formación universitaria , 2011, DOI: 10.4067/S0718-50062011000300002
Abstract: the concept of carbon footprint is analyzed, its relation to emission of dangerous gases is discussed, and its inclusion in formal undergraduate courses of engineering and sciences is explained. the advances done on this subject by international organizations and companies around the world makes it attractive and necessary to discuss the subject of carbon footprint in university courses. at present, this matter is only treated in elective courses and in some programs of environmental engineering. the paper proposes some forms for motivating students through semester research projects, oral presentations, and written essays. examples of subjects that can be assigned in undergraduate or graduate courses are provided. it is concluded that being this a wide subject that touches all sectors, the future engineers and scientists mast have the minimum knowledge that allows them to understand the concept and apply it in their professional life.
Semantic-discursive functions of linguistic expression that materialize conceptual metaphor in discurse genres
Espíndola, Lucienne C.;
DELTA: Documenta??o de Estudos em Lingüística Teórica e Aplicada , 2010, DOI: 10.1590/S0102-44502010000300009
Abstract: this work aims at presenting some results of the research developed in the project named metaphor, discursive genre and argumentation (mgda) which has the purpose of describing linguistic expressions that materialize conceptual metaphors in several discursive genres, searching for the identification of the semantic-discursive function(s) of such expressions. the researches were done by my students and me and the present results reveal some discursive functions not seen in the literature so far: the presence of metaphorical expressions that materialize conceptual metaphors with the function of approaching the advertiser to the interlocutor in publicity and linguistic expressions that literalize the everyday life conceptual metaphor, producing laughter in humor, among other semantic-discursive functions.
METáFORAS/ METONíMIAS CONCEPTUAIS NO DISCURSO DE LUIZ INáCIO LULA DA SILVA (PRESIDENTE)
Lucienne C. Espíndola
DLCV : Língua, Linguística & Literatura , 2011,
Abstract: This article presents results of the research about metaphors and metonymies in discourse of President Lula and the semantic-discursive function(s) of metaphorical and metonymical expressions which were found in this discursive genre. We have used for this investigation contributions from authors such as Lakoff e Johnson (2002[1980], 2003), Barcelona (2003) to investigate conceptual metaphors and conceptual metonymies, and Koch (1992) and Castilho e Castilho (1993) to investigate the semantic-discursive functions of metaphorical and metonymical expressions. This work analyses throughout the Modalization Theory how conceptual metaphors and conceptual metonymies are used as discursive strategy by the President.
Níveis de proteína bruta e energia metabolizável na ra??o para codornas de corte
Freitas, Almir Chalegre de;Fuentes, Maria de Fátima Freire;Freitas, Ednardo Rodrigues;Sucupira, Francislene Silveira;Oliveira, Bruno César Moura de;Espíndola, Gast?o Barreto;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000600018
Abstract: the effect of different cp (20, 22, 24, and 26% of cp) and me (2,565, 2,715, 2,865, and 3,015 kcal of me/kg. ) levels on the performance of meat quails was evaluated. seven hundred and sixty-eight european quails (coturnix coturnix coturnix) of both sexes from 1 to 42 days of age were assigned to a completely randomized design with 4 x 4 factorial arrangement (protein x energy) and grouped into three clusters with 16 birds each. no significant interaction among protein-energy and protein levels on feed intake, weight gain, feed:gain ratio and viability was observed. however, increasing the dietary energy level resulted in linear reduction of feed intake and greater weight gain and feed:gain ratio. feed intake of meat quails depends on the dietary energy level. diet containing 20% cp and 2,865 kcal me/kg account for better meat quail performance.
Structural Analysis and Static Simulation of Coastal Planktonic Networks  [PDF]
Gilberto C. Pereira, Lúcio P. Andrade, Rogério P. Espíndola, Nelson F. F. Ebecken
Journal of Intelligent Learning Systems and Applications (JILSA) , 2014, DOI: 10.4236/jilsa.2014.62009
Abstract:

The coastal marine habitats are often characterized by high biological activity. Therefore, monitoring programs and conservation plans of coastal environments are needed. So, in order to contribute to decision making process of the Brazilian Information System of Coastal Management, this paper presents a preliminary analysis of the effects of simulated deletions of individual organisms within a planktonic network as knowledge acquisition platform. An in situ scanning flow cytometer was used to data acquisition. A static and undirected food web is generated and represented by a fuzzy graph structure. Our results show through a series of indices the main changes of these networks. It was also verified similar traits and properties with other food webs found in the literature.

bcl-2 expression is not associated with survival in metastatic cutaneous melanoma: A historical cohort study
Marília B Espíndola, Oly C Corleta
World Journal of Surgical Oncology , 2008, DOI: 10.1186/1477-7819-6-65
Abstract: In a historical cohort study patient survival was correlated with the expression of bcl-2 in regional lymph node, subcutaneous and visceral metastases of CM. Eighty slides containing surgical specimens from 50 patients diagnosed with stage III and IV CM, 28 male (56%) and 22 female (44%), were analyzed. Mean age at diagnosis was 43 years (16–74 years; median = 42 years). Mean Breslow depth was 5.01 mm (0.4–27.5 mm). The slides were submitted to immunohistochemical reaction using anti-bcl-2 monoclonal antibody and classified according to the degree of staining (< 5%; 5 to 50%; or > 50% of tumor cells stained). The relationship between bcl-2 protein expression and survival for each type of metastasis, gender and age at initial diagnosis was analyzed.Mean overall survival was 33.9 months after the diagnosis of the initial metastatic lesion (range: 0 to 131 months). Twenty-four out of 50 patients (48%) had died from CM by the end of the study period. bcl-2 expression was detected in 74.3, 85.7 and 82.4% of lymph node, subcutaneous and visceral metastases, respectively. After univariate and multivariate analyses, no correlation was found between positive bcl-2 expression and overall survival for the types of metastases evaluated.The immunohistochemical expression of bcl-2 in metastasis alone is not a prognostic marker for CM.The incidence of cutaneous melanoma (CM) has increased steadily in the last few years [1]. Sun exposure and sunburn, with subsequent genetic damage caused by ultraviolet radiation [2], play a major role in this increase. The prognosis of CM is positive in its initial stages; however, the five-year survival rate is only 41% in patients with regional lymph node metastases. A maximum survival of 2 years has been reported for patients with distant metastases [3].Despite major advances in cancer treatment, surgery is still the treatment of choice for CM, since chemotherapy and radiation therapy generally produce low response rates [4,5]. Since the ultimat
Page 1 /220417
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.