oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 184 )

2018 ( 366 )

2017 ( 396 )

2016 ( 521 )

Custom range...

Search Results: 1 - 10 of 232021 matches for " Juan. P. Mena-Salas "
All listed articles are free for downloading (OA Articles)
Page 1 /232021
Display every page Item
Composting Used as a Low Cost Method for Pathogen Elimination in Sewage Sludge in Mérida, Mexico
Dulce Diana Caba?as-Vargas,Emilio. de los Ríos Ibarra,Juan. P. Mena-Salas,Diana Y. Escalante-Réndiz,Rafael Rojas-Herrera
Sustainability , 2013, DOI: 10.3390/su5073150
Abstract: Spreading sewage sludge from municipal wastewater (MWW) treatment on land is still a common practice in developing countries. However, it is well known that sewage sludge without special treatment contains various pollutants, which are (re)introduced into the environment by sludge landspreading and which might in turn have harmful effects on the environment and human health. This is more dangerous in places like Merida, Mexico, where soil is calcareous with fractures along the ground and thin layers of humus. Consequently, any liquid and semisolid wastes have the potential of percolating to the subsurface and contaminate the aquifer. The main aim of this work was using composting as a low cost process to eliminate pathogens contained in sewage sludge from MWW treatment in order to use the final product for land spreading in a safe way for both environment and human health. Two piles for composting process at real scale were settled using a mixture of sewage sludge from municipal waste water and green waste. Composting was carried out by windrow process and it was monitored during four weeks. Concentration of helminth eggs, salmonella and faecal coliforms were measured twice a week to observe its behavior and, as a control process, Temperature, Moisture Content (MC), and pH were also measured. After 30 days of composting sludge from municipal waste water system, salmonella was eliminated by 99%, faecal coliforms by 96% and helminth eggs by 81%. After 3 months compost reached GI = 160%, so did not show any phytotoxicity to seeds.
Excedente económico y persistencia de las desigualdades en América Latina
Pérez Sáinz, Juan Pablo;Mora Salas, Minor;
Revista mexicana de sociología , 2009,
Abstract: this article constitutes a conceptual effort to understand the dynamics of the repro duction of social inequalities in latin america during the global phase of accumulation in the capitalist system. a sociological approach is adopted. in this respect, it proposes a break with the liberal paradigm and attempts to recover the centrality of groups and social classes in the analysis of this phenomenon, without losing sight of individual agency. lastly, the text proposes an analytical model with a regional scope, oriented toward an understanding of the process of reconstituting unequal profits within the context of globalization.
Medicina en televisión: ?un problema ético?
Beca I,Juan Pablo; Salas I,Sofía P.;
Revista médica de Chile , 2004, DOI: 10.4067/S0034-98872004000700015
Abstract: television programs where medical procedures are shown with progressive realism generate problems that physicians need to know and analyze. the authors analyze this issue, based on the respect to patient's dignity and the principles of bioethics. medical programs on tv present specific problems to the different agents involved in them: tv media, physicians, health organization, public and patients or relatives that are exposed. physicians have the responsibility to educate the society using the most efficient methods of public communication, including television. the problem is not how much can be shown but how to do it, making sure that the dignity of patients, the privacy of their stories and their own and their relative's feelings are always strictly cherished. the respect towards the patient is accomplished through a valid informed consent, the reverence to his face as an expression of his personhood, and the way in which his body is exposed. the authors conclude that tv programs on health and medical subjects are valuable methods to educate society and that physicians, in their function of social educators, should take part in them truly reassuring the respect to patient's dignity and to the bioethical principles of beneficence, autonomy and justice. (rev méd chile 2004; 132: 881-5)
Los medios de comunicación y los avances biomédicos
P Salas,Sofía; Beca I,Juan Pablo;
Revista médica de Chile , 2008, DOI: 10.4067/S0034-98872008001000018
Abstract: the public dissemination of advances in biomedical research and clinical medicine generates several difficulties and problems. mass media have the responsibility to report accurately and in a comprehensive way, and physicians and researchers mustprovide this information in a timely manner and without bias. afíer reviewing the ?iterature related to this subject and discussing some examples of inadequate information in the chilean context, the authors suggest the foüowing recommendations: journalists should compare and evalúate the information approp?ately before its publication, researchers and journalists should work together, reports should inform clearly about the state of the research and every academic institution should avoid reporting publicly preliminary experiences. if these recommendations are foüowed, the general public, physicians, researchers and health care institutions will be benefited.
Medicina en televisión: un problema ético? Medicine in television: An ethical problem?
Juan Pablo Beca I,Sofía P. Salas I
Revista médica de Chile , 2004,
Abstract: Television programs where medical procedures are shown with progressive realism generate problems that physicians need to know and analyze. The authors analyze this issue, based on the respect to patient's dignity and the principles of bioethics. Medical programs on TV present specific problems to the different agents involved in them: TV media, physicians, health organization, public and patients or relatives that are exposed. Physicians have the responsibility to educate the society using the most efficient methods of public communication, including television. The problem is not how much can be shown but how to do it, making sure that the dignity of patients, the privacy of their stories and their own and their relative's feelings are always strictly cherished. The respect towards the patient is accomplished through a valid informed consent, the reverence to his face as an expression of his personhood, and the way in which his body is exposed. The authors conclude that TV programs on health and medical subjects are valuable methods to educate society and that physicians, in their function of social educators, should take part in them truly reassuring the respect to patient's dignity and to the bioethical principles of beneficence, autonomy and justice. (Rev Méd Chile 2004; 132: 881-5)
Los medios de comunicación y los avances biomédicos Mass media communication of biomedical advances
Sofía P Salas,Juan Pablo Beca I
Revista médica de Chile , 2008,
Abstract: The public dissemination of advances in biomedical research and clinical medicine generates several difficulties and problems. Mass media have the responsibility to report accurately and in a comprehensive way, and physicians and researchers mustprovide this information in a timely manner and without bias. Afíer reviewing the iterature related to this subject and discussing some examples of inadequate information in the Chilean context, the authors suggest the foüowing recommendations: journalists should compare and evalúate the information approp ately before its publication, researchers and journalists should work together, reports should inform clearly about the state of the research and every academic institution should avoid reporting publicly preliminary experiences. If these recommendations are foüowed, the general public, physicians, researchers and health care institutions will be benefited.
Excedente económico y persistencia de las desigualdades en América Latina Economic Surplus and Persistence of Inequalities in Latin America
Juan Pablo Pérez Sáinz,Minor Mora Salas
Revista mexicana de sociología , 2009,
Abstract: Este artículo constituye un esfuerzo de orden conceptual por entender la dinámica de la reproducción de las desigualdades sociales en América Latina en la fase de acumulación global del sistema capitalista. El enfoque adoptado es de carácter sociológico. En ese sentido, plantea una ruptura con el paradigma liberal y busca recuperar la centralidad de los grupos y las clases sociales en el análisis de este fenómeno, sin perder de vista la agencia individual. Finalmente, el texto plantea un modelo analítico de alcance regional, orientado a entender el proceso de reconstitución de las desigualdades de excedente, en el contexto de la globalización. This article constitutes a conceptual effort to understand the dynamics of the repro duction of social inequalities in Latin America during the global phase of accumulation in the capitalist system. A sociological approach is adopted. In this respect, it proposes a break with the liberal paradigm and attempts to recover the centrality of groups and social classes in the analysis of this phenomenon, without losing sight of individual agency. Lastly, the text proposes an analytical model with a regional scope, oriented toward an understanding of the process of reconstituting unequal profits within the context of globalization.
Evaluación de la tratabilidad de los lixiviados en el relleno sanitario de Pereira mediante filtros anaerobios de flujo ascendente a escala piloto
MAURICIO CHAVARRO,JUAN P. GARCES,JHONIERS GUERRERO,DIANA SALAS Q.
Scientia Et Technica , 2006,
Abstract: En esta investigación, se evalúo el arranque y operación de los filtros anaerobios de flujo ascendente (FAFA) a escala piloto para el tratamiento de lixiviados del relleno sanitario "La Glorita" de la ciudad de Pereira, utilizando guadua como medio de soporte para el crecimiento bacteriano. Las eficiencias de remoción de DQO obtenidas presentaron valores entre el 60 y 90% para cargas con valores máximos de 10 kgDQO/m3d, y un TRH de 1.2 días. También se alcanzaron valores de AGV inferiores a 30 meq/L, así como el índice buffer se comportó en un rango por debajo de 0.5.
Acompa?amiento del enfermo: Una experiencia de aprendizaje sobre el significado de la enfermedad
Ortiz P,Armando; Beca I,Juan Pablo; Salas,Sofía P; Browne L,Francisca; Salas A,Camila;
Revista médica de Chile , 2008, DOI: 10.4067/S0034-98872008000300004
Abstract: background: due to technical advances and progressive specialization, patient physician relationship evolved from being based on confidence and comprehension to be impersonal and contractual. aim: to evaluate the change produced in medical students' concept of the meaning of disease, after living an experience of accompanying a patient and their family environment. material and methods: we used a qualitative research methodology based on participative-action to evaluate an educational method in which a group of third year medical students accompanied a previously selected chronic patient during two months. we performed two focal groups, one previous to the experience and the second one a month later. additionally, every student wrote a personal narration of the experience. we compared the students' perception of the meaning of disease for the patients and their relatives, before and after the experience. results: the students confirmed their previous conception about chronic disease, but they also discovered the ways in which some patients and their families overcome their ?imitations. they pointed out their belief that the physician's comprehension of the meaning of disease for the patient and the family, a need to practice a good medicine and that this knowledge change the physician-patient relationship. conclusions: this experience was an effective way of ?earning the meaning of disease, which might be a part of medical student' training, with the corresponding adjustments and changes
Acompa amiento del enfermo: Una experiencia de aprendizaje sobre el significado de la enfermedad Accompanying a patient as an experience to learn the meaning of disease
Armando Ortiz P,Juan Pablo Beca I,Sofía P Salas,Francisca Browne L
Revista médica de Chile , 2008,
Abstract: Background: Due to technical advances and progressive specialization, patient physician relationship evolved from being based on confidence and comprehension to be impersonal and contractual. Aim: To evaluate the change produced in medical students' concept of the meaning of disease, after living an experience of accompanying a patient and their family environment. Material and methods: We used a qualitative research methodology based on participative-action to evaluate an educational method in which a group of third year medical students accompanied a previously selected chronic patient during two months. We performed two focal groups, one previous to the experience and the second one a month later. Additionally, every student wrote a personal narration of the experience. We compared the students' perception of the meaning of disease for the patients and their relatives, before and after the experience. Results: The students confirmed their previous conception about chronic disease, but they also discovered the ways in which some patients and their families overcome their imitations. They pointed out their belief that the physician's comprehension of the meaning of disease for the patient and the family, a need to practice a good medicine and that this knowledge change the physician-patient relationship. Conclusions: This experience was an effective way of earning the meaning of disease, which might be a part of medical student' training, with the corresponding adjustments and changes
Page 1 /232021
Display every page Item


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