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Search Results: 1 - 10 of 46601 matches for " René Santos-Luna "
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Use of Geographical Information Systems for billboards and points-of-sale surveillance in two Mexico cities
Hernández-ávila,Juan Eugenio; Tirado-Ramírez,Enrique; Santos-Luna,René; Reynales-Shigematsu,Luz Myriam;
Salud Pública de México , 2007, DOI: 10.1590/S0036-36342007000800014
Abstract: objective: to assess the degree of compliance with current legislation using geographic information systems. material and methods: schools and billboards advertising tobacco were geo-referenced and the distance to schools were measured. students? access to purchasing tobacco products was observed. results: in cuernavaca, billboards were found within 250 meter from schools and students had access to buying cigarettes. in culiacan, students were less exposed to tobacco advertising. conclusions: geographic information systems were useful for studying compliance with the law and could also be useful for its continuous monitoring and for suggesting changes for diminishing tobacco advertising exposure. this exposure and the ease of access to purchasing cigarettes could explain the higher prevalence of active smokers among students in cuernavaca. this suggests that current legislation is still not enough enforced for diminishing mexican adolescents? exposure to tobacco advertising and products.
Estrategia de vigilancia para el control del tabaco en México: publicidad, promoción y patrocinio, empaque y etiquetado
Rodríguez-Bola?os,Rosibel; Reynales-Shigematsu,Luz Myriam; Iba?ez-Hernández,Norma A; Santos-Luna,René; Valdés-Salgado,Raydel; ávila-Tang,Erika; Stillman,Frances;
Salud Pública de México , 2010, DOI: 10.1590/S0036-36342010000800021
Abstract: objective. to describe strategies used in the publicity, marketing, and sale, of tobacco products in 12 cities in mexico. material and methods. tobacco products points of sale (pos) were identified within a 500 m radius of global youth tobacco survey (2005-2006) schools. we used observational surveys and an online geographic information system (gis). results. in the 257 schools visited, we found, on average, 8.3 stores and 5 street vendors around each of them. forty-four percent of the stores had interior tobacco publicity, 8.3% had tobacco products at children's eye level, 6.5% had some promotion, 33.6% had a no selling to minors sign, and 44.4% of stores and 58.8% of street vendors sold single cigarettes. conclusions. tobacco products are largely publicized and marketed around schools. there is no compliance of tobacco control legislations in regards to selling to minors and single cigarettes. it is necessary to implement a surveillance system to monitor strategies for tobacco control and the tobacco industry.
Modelo geoespacial automatizado para la regionalización operativa en planeación de redes de servicios de salud
Hernández-ávila,Juan Eugenio; Santos-Luna,René; Palacio-Mejía,Lina Sofía; Salgado-Salgado,Ana Lidia; Ríos-Salgado,Víctor Hugo; Rodríguez-López,Mario Henry; Sepúlveda-Amor,Jaime;
Salud Pública de México , 2010, DOI: 10.1590/S0036-36342010000500011
Abstract: objective. to develop an automated model for the operational regionalization needed in the planning of the health service networks proposed by the new mexican health care model (modelo integrador de servicios de salud midas). material and methods. using available data for méxico during 2005 and 2007, a geospatial model was developed to estimate potential catchment areas around health facilities based on access travel time. the results were compared with an operational regionalization (ero) study manually carried out in oaxaca with 2005 data. results. the ero assigned 48% of villages to health care centers further away than those assigned by the geospatial model, and 23% of these health centers referred patients to more distant hospitals. conclusions. the model calculated by this study generated a more efficient regionalization than the ero model, minimizing travel time to access health services. this model has been adopted by the general department of health planning and development of the mexican ministry of health for the implementation of the health sector infrastructure master plan.
Nation-Wide, Web-Based, Geographic Information System for the Integrated Surveillance and Control of Dengue Fever in Mexico
Juan Eugenio Hernández-ávila, Mario-Henry Rodríguez, René Santos-Luna, Veronica Sánchez-Casta?eda, Susana Román-Pérez, Víctor Hugo Ríos-Salgado, Jesús Alberto Salas-Sarmiento
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0070231
Abstract: Dengue fever incidence and its geographical distribution are increasing throughout the world. Quality and timely information is essential for its prevention and control. A web based, geographically enabled, dengue integral surveillance system (Dengue-GIS) was developed for the nation-wide collection, integration, analysis and reporting of geo-referenced epidemiologic, entomologic, and control interventions data. Consensus in the design and practical operation of the system was a key factor for its acceptance. Working with information systems already implemented as a starting point facilitated its acceptance by officials and operative personnel. Dengue-GIS provides the geographical detail needed to plan, asses and evaluate the impact of control activities. The system is beginning to be adopted as a knowledge base by vector control programs. It is used to generate evidence on impact and cost-effectiveness of control activities, promoting the use of information for decision making at all levels of the vector control program. Dengue-GIS has also been used as a hypothesis generator for the academic community. This GIS-based model system for dengue surveillance and the experience gathered during its development and implementation could be useful in other dengue endemic countries and extended to other infectious or chronic diseases.
Avances en educación superior: irrupción femenina y continuidad masculina
Silvia Luna Santos
Economía, sociedad y territorio , 2005,
Abstract: Thanks to the expansion of the Mexican higher education system from the 1970s, the population with higher education studies has been increased, particularly the feminine one. This evidence has been obtained from a gender and generational analysis. The analysis also shows the socio-demographic characteristics of the population with higher education studies, which suggest that there are some advantages for women of the most recent generations, for instance not having become part of the labour market during their university studies. It is suggested that the fact that women have reached levels of higher education has generated a greater participation in the economic activity, which in turn allows them to have more autonomy and puts them in a better position to negotiate both in the family and labour spheres.
Fotoethnografien Armer an der Nordgrenze von Mexiko Photo-ethnography by People Living in Poverty Near the Northern Border of Mexico Foto-etnografía llevada a cabo por personas en situación de pobreza en la frontera norte de México
Jesús René Luna Hernández
Forum : Qualitative Social Research , 2009,
Abstract: Arme Menschen haben zumeist nur wenige M glichkeiten, ihren Emotionen über ihre prek re Lebenssituation Ausdruck zu verleihen. Die meisten Armutsstudien beschr nken sich auf ohnehin bekannte Merkmale, und dies zudem vor allem im Rahmen quantitativer Designs. In meiner Studie versuche ich der Frage nachzugehen, was arme Menschen selbst an ihrem Leben als wichtig oder berichtenswert erachten. Hierzu wurden 30 Personen Einwegkameras gegeben, in diesem Beitrag werden die Ergebnisse von zehn von ihnen zusammengefasst. Nachdem die Fotos vorlagen, wurden die Teilnehmenden gebeten, diejenigen Fotos oder Aspekte zu kommentieren, die für sie besonders bedeutungsvoll waren. Auf diese Weise wurden drei Hauptthemen erkennbar: Familie, Umweltprobleme und Aktivit ten der bzw. in der Gemeinde. Die meisten Fotos fokussierten k rperliche und eher emotionsgeladene Themen mit der Tendenz, über als ungerechte erlebte Bedingungen aufkl ren zu wollen und nachvollziehbar zu machen, in welcher Weise Arme versuchen, die wechselhaften Erfordernisse ihres Alltagslebens zu bew ltigen. URN: urn:nbn:de:0114-fqs0902353 People living in poverty have had little opportunity to express their feelings about the precarious situation in which they live. Most studies on poverty have focused on describing its most prominent characteristics, more often in a quantitative manner. This paper aims to explore the way in which people living in poverty conceptualize what they consider important and/or interesting in their everyday lives. Disposable cameras were given to 30 participants. In this paper efforts of 10 different photographers are reported. After the photographs were developed the participants were asked to comment on any aspect or situation portrayed in one or more photographs that could be considered interesting or important to them. Three main topics emerged: family, environmental problems and dangers, and community actions. Most of the photographs and commentaries centered on physically and emotionally-related themes, with a clear tendency to denounce unjust situations and to portray the manner in which the poor cope with the vicissitudes of daily life. URN: urn:nbn:de:0114-fqs0902353 La gente pobre en muy pocas ocasiones tiene la oportunidad de poder expresar la situación precaria en la que viven. Por lo general, los estudios sobre pobreza se han abocado a describir las características más prominentes de la pobreza, en muchas ocasiones sólo de manera cuantitativa. Este trabajo busca explorar la manera en la que gente pobre concibe lo que es importante e interesante en su vida cotidiana
Financial links between the stock market and the debt securities market
Francisco Eduardo de Luna e Almeida Santos
Revista Brasileira de Finan?as , 2008,
Abstract: The aim of this paper is to measure the endogenous relationship between stock and bond markets. To recover the structural form of this relationship, the author applied the method of identi cation through heteroskedasticity. Both coef cients were found to be negative which is consistent with the notion that, given an opportunity cost of capital, the returns move in opposite directions in order to promote the equilibrium of the capital ow. However, only the coef cient that measures the impact of bond market over stock markets was signi cantly different from zero. Thus, the intensity of this relationship also depends on the relative size of the markets under study.
Using High-Throughput Sequencing to Leverage Surveillance of Genetic Diversity and Oseltamivir Resistance: A Pilot Study during the 2009 Influenza A(H1N1) Pandemic
Juan Téllez-Sosa, Mario Henry Rodríguez, Rosa E. Gómez-Barreto, Humberto Valdovinos-Torres, Ana Cecilia Hidalgo, Pablo Cruz-Hervert, René Santos Luna, Erik Carrillo-Valenzo, Celso Ramos, Lourdes García-García, Jesús Martínez-Barnetche
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0067010
Abstract: Background Influenza viruses display a high mutation rate and complex evolutionary patterns. Next-generation sequencing (NGS) has been widely used for qualitative and semi-quantitative assessment of genetic diversity in complex biological samples. The “deep sequencing” approach, enabled by the enormous throughput of current NGS platforms, allows the identification of rare genetic viral variants in targeted genetic regions, but is usually limited to a small number of samples. Methodology and Principal Findings We designed a proof-of-principle study to test whether redistributing sequencing throughput from a high depth-small sample number towards a low depth-large sample number approach is feasible and contributes to influenza epidemiological surveillance. Using 454-Roche sequencing, we sequenced at a rather low depth, a 307 bp amplicon of the neuraminidase gene of the Influenza A(H1N1) pandemic (A(H1N1)pdm) virus from cDNA amplicons pooled in 48 barcoded libraries obtained from nasal swab samples of infected patients (n = 299) taken from May to November, 2009 pandemic period in Mexico. This approach revealed that during the transition from the first (May-July) to second wave (September-November) of the pandemic, the initial genetic variants were replaced by the N248D mutation in the NA gene, and enabled the establishment of temporal and geographic associations with genetic diversity and the identification of mutations associated with oseltamivir resistance. Conclusions NGS sequencing of a short amplicon from the NA gene at low sequencing depth allowed genetic screening of a large number of samples, providing insights to viral genetic diversity dynamics and the identification of genetic variants associated with oseltamivir resistance. Further research is needed to explain the observed replacement of the genetic variants seen during the second wave. As sequencing throughput rises and library multiplexing and automation improves, we foresee that the approach presented here can be scaled up for global genetic surveillance of influenza and other infectious diseases.
Mimosa diversiplla var. subglabriseta (MimosoIdeae, Leguminosae), a new record for the flora of Paraguay
Javier A Luna,Matías Morales,Renée Fortunato
Boletín de la Sociedad Argentina de Botánica , 2012,
Abstract: The presence of Mimosa diversipila M. Micheli var. subglabriseta Barneby & Fortunato is now reported for first time in Paraguay. A revision of Barneby's initial description of the variety and photographs of one of the Paraguayan specimens are given in this paper. Mimosa diversipila var. subglabriseta (Mimosoideae, Leguminosae), una nueva cita para la flora de Paraguay. Reportamos por primera vez la presencia de Mimosa diversipila M. Micheli var. subglabriseta Barneby & Fortunato en Paraguay. Una revisión de la descripción inicial de Barneby y fotografías de uno de los ejemplares de Paraguay se incluyen en este documento.
Rea??es adversas a medicamentos em pediatria: uma revis?o sistemática de estudos prospectivos
Santos, Djanilson Barbosa dos;Coelho, Helena Lutéscia Luna;
Revista Brasileira de Saúde Materno Infantil , 2004, DOI: 10.1590/S1519-38292004000400002
Abstract: the aim of this literature review is to explore and to compare information derived from prospective studies of adverse drug reactions (adr) incidence in pediatrics. a systematic literature research was performed looking for studies involving outpatient and inpatient children as well hospitalizations due to adr. the studies were identified in medline, ipa and lilacs databases from january 1966 to november 2003. investigation focused on specific treatments or morbidities was not included in the review. twenty prospective cohort studies were included in the analysis. in outpatient investigations adr incidence varied from 0.75% to 11.1% between the studies; 0.6% to 4.3% of hospital admissions were related to adr with adr frequency during hospitalization varying from 4.4% to 18.1% of the children. the lack of definition standards and of methodological criteria hindered results comparison and could partly explain the different observations.
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