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Search Results: 1 - 10 of 38677 matches for " Juan Guillermo; Rangel "
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Formulation and numeric calculation of non-isothermal effectiveness factor for finite cylindrical catalysts with bi-dimensional diffusion
Hoyos,Bibian; Cadavid,Juan Guillermo; Rangel,Hermes;
Latin American applied research , 2004,
Abstract: a model for calculating the effectiveness factor and the concentration and temperature profiles for finite cylindrical either hollow or solid catalyst particles is presented. the model accounts for dispersion in both radial and axial directions and non-isothermal behavior. the resulting differential partial equations system is discretized by a centered finite difference method and a program written for the excel? electronic sheet solves the highly nonlinear algebraic system. the numerical technique can be extended for any kinetic expression; for illustration, some results for n-th order reactions rate expressions are shown.
Formulation and numeric calculation of non-isothermal effectiveness factor for finite cylindrical catalysts with bi-dimensional diffusion
Bibian Hoyos,Juan Guillermo Cadavid,Hermes Rangel
Latin American applied research , 2004,
Abstract: A model for calculating the effectiveness factor and the concentration and temperature profiles for finite cylindrical either hollow or solid catalyst particles is presented. The model accounts for dispersion in both radial and axial directions and non-isothermal behavior. The resulting differential partial equations system is discretized by a centered finite difference method and a program written for the Excel electronic sheet solves the highly nonlinear algebraic system. The numerical technique can be extended for any kinetic expression; for illustration, some results for n-th order reactions rate expressions are shown.
Discursos de los partidos políticos sobre el sufragio universal y la participación política en Antioquia, 1848-1854
ZAPATA áVILA,JUAN GUILLERMO;
Anuario Colombiano de Historia Social y de la Cultura , 2010,
Abstract: this article analyzes the political language of liberals and conservatives regarding universal suffrage, constitutionalism and characterization of citizenship in the mid-nineteenth century antioquia. the paper reports a research process that focused on the analysis of the press, flyers and leaflets that disseminated these speeches. the text presents the discourses that denoted the fears of party elites faced with the inclusion of the popular sectors to exercise citizenship and strong religiosity in the defense of political institutions. to this extent, exacerbated languages can be seen that promoted universal suffrage as a distinctive feature of modern society, but, in turn, as dogmatic expression of each party seeking to impose its electoral strength. the article is divided into two parts: the first analyzes liberal discourse and electoral dynamics of the period, while the second does the same with respect to the conservative party.
Trabajo, salud y régimen contractual en personal de enfermería: un enfoque psicosocial
GUERRERO,JUAN; PULIDO,GUILLERMO;
Avances en Enfermería , 2010,
Abstract: associated cooperativism has been the favorite mechanism of labor flexibilization in the colombian health system. in spite of the multiple references to the deleterious effects on working conditions, no specific research has been conducted about the effects on nursing staffs. this research is intended to define and compare the working and health conditions of the auxiliary and professional nursing staff according to the contractual modality and other relevant socio-labor conditions. 290 professional and auxiliary nurses from a highly complex public hospital located in bogota attached to the network of hospitals of the district health secretariat were subject to a psychosocial interview derived from instruments designed or adapted by the line of research “psychosocial approach of the health-labor relation”, of the national university. the lipid profile of 176 participants was also measured. the results show that human resources policies (contracts, salary, promotions, occupational health, training, leisure, etc.) are factors that cast the major negative influence on the welfare of nursing staffs, mainly in cooperative and professional ones. particularly, the results present the main working conditions risk-protection profiles through the conglomeration of intra-labor, extra-labor, individual factors or macro-factors.
Evolución histórica de los conceptos de responsabilidad social empresarial y balance social
Correa Jaramillo,Juan Guillermo;
Semestre Económico , 2007,
Abstract: the term "corporate social responsibility" is frequently used in two different contexts: to describe what a company is actually executing and to describe what it should be executing. that is, one descriptive approach and one normative approach. public sector?s social actions are a complement to governmental actions. there are innumerable examples in which private sector is making an important contribution. it is necessary to take into account that a trend toward globalization has brought new challenges for private sector in relation to its obligations and responsibilities in relation to society in general. the objective of this article is to achieve an approach and a differentiation of both concepts: entrepreneurial social responsibility and social balance. main conclusion is that companies subject matter of this study do not apply a model to make a social balance and that they do not construct their own social management indicators.
Indización en SciELO y ascenso a la categoría A2 del Publindex
Juan Guillermo Maldonado Estrada
Revista Colombiana de Ciencias Pecuarias , 2007,
Abstract:
Exámenes ECAES, currículo y jóvenes investigadores
Juan Guillermo Maldonado Estrada
Revista Colombiana de Ciencias Pecuarias , 2007,
Abstract:
Indización en Thomson Reuters
Juan Guillermo Maldonado Estrada
Revista Colombiana de Ciencias Pecuarias , 2008,
Abstract:
Testimonio de gratitud
Juan Guillermo Maldonado Estrada
Revista Colombiana de Ciencias Pecuarias , 2006,
Abstract:
Comité Internacional de Editores de Revistas Biomédicas (ICMJE) y Open Journal System (OJS)
Juan Guillermo Maldonado Estrada
Revista Colombiana de Ciencias Pecuarias , 2008,
Abstract:
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