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Sample records for centroccidental lisandro alvarado

  1. X-ray Fluorescence in Member States: Venezuela. X ray Fluorescence in Venezuela at the Agronomy Faculty, Laboratory Unidad de Analisis Instrumental, Universidad Centroccidental Lisandro Alvarado, Venezuela

    International Nuclear Information System (INIS)

    The research in the field of XRF was devoted to the development of methods for arsenic determination and the application of the TXRF technique in bioremediation studies and archeometry. X ray techniques and chemometrics were used for the determination of composition as well as for classification and provenance studies of archeological samples. The projects were conducted in collaboration with the Laboratory of Nuclear Physics at Universidad Simon Bolivar, Venezuela, the University of Concepcion and the University of Arica, Chile, the University of Buenos Aires, the CNEA (Comision Nacional de Energia Atomica de Argentina), and the Instituto de Radioprotecao e Dosimetria of Brasil

  2. INFORMACION ASIMETRICA Y ACTIVOS ESPECIFICOS EN LA AGRICULTURA ORGANICA: UNA INTERPRETACION NEOINSTITUCIONAL

    OpenAIRE

    Alejua, Hilda Yelitza; Lopez, Ricardo Castillo

    2005-01-01

    INFORMACION ASIMETRICA Y ACTIVOS ESPECIFICOS EN LA AGRICULTURA ORGANICA: UNA INTERPRETACION NEOINSTITUCIONAL Hilda Alejua y Ricardo Castillo Docentes Investigadores del Decanato de Ingeniería Agronómica de la Universidad Centroccidental Lisandro Alvarado UCLA. Venezuela , Introducción: El objetivo de la presente investigación es analizar las posibles consecuencias de la información asimétrica y los activos específicos en las actividades económicas relacionada...

  3. No way home: silence, slowness and the problem of authenticity in the cinema of Lisandro Alonso

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    Roberto Cavallini

    2015-07-01

    Full Text Available In his trilogy, comprising La Libertad (2001, Los Muertos (2004 and Liverpool (2008, Argentinian director Lisandro Alonso employs a distinctive narrative motif, namely the journey of solitary individuals through desolated landscapes in rural Argentina. From a comparative view, the key to understanding these introverted trajectories is to consider Alonso’s construction of narrative space around the misery of a stark void, namely the absence of home. For Alonso, home is not a peaceful destination, connoting the intimacy of a family, serenity or simply a place where one is allowed to dream in peace (Bachelard. The absence of home becomes the blind spot of these journeys: home turns out to be a broken horizon. In this essay I will mainly focus on the film Los Muertos and the way in which it radicalizes narrative space through the combination of cinematic silence (absence of words and dialogues and cinematic slowness (static long-takes while formulating a void which coincides with the protagonist’s homelessness. Moreover, this essay tries to consider how Alonso’s radical cinematic realism problematizes the concept of authenticity in its modern formation, and also in the context of Rancière’s notion of documentary fiction and the relationship between aesthetics and politics.

  4. ¿Quién es el Dr. Alvarado?

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    Arturo Jauretche

    2012-01-01

    Este texto, escrito por Arturo Jauretche, recupera la figura del Dr. Carlos Alberto Alvarado (1904-1986) quien, en tiempos en que Ramón Carrillo era secretario de Salud Pública de la Nación, dirige una campaña que logra controlar el paludismo en el noroeste argentino con una reducción muy importante del número de casos, alcanzando una amplia repercusión mundial. En 1955, el Dr. Alvarado es separado de su cargo por la Revolución Libertadora, momento en que la Organización Panamericana de...

  5. DIAGNOSIS OF AQUACULTURE IN THE MUNICIPALITY OF ALVARADO VERACRUZ, MEXICO

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    Lenin Rangel-López; Fabiola Lango-Reynoso; Alberto Asian-Hoyos; María del Refugio Castañeda-Chávez

    2014-01-01

    This research aims to analyze the current situation of aquaculture farms in the Municipality of Alvarado, Veracruz, Mexico. During this study, 29 interviews were conducted aimed to the units of aquaculture producers; 24 variables were analyzed within the aspects of the socio-economic, technical, marketing and legal framework. The most relevant results within the legal framework: 21% of units has “National Registration of Fisheries and Aquaculture” (RNPyA) and 7% has “Federal Taxpayer Register...

  6. EVALUATION OF MODIFIED ALVARADO SCORE IN PREOPERATIVE DIAGNOSIS OF ACUTE APPENDICITIS

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    Ramachandra

    2013-11-01

    Full Text Available ABSTRACT: BACKGROUND AND OBJECTIVES: Decision making in case of acute appendicitis may be difficult, especiall y for junior surgeon. Radiological investigations do not appear to be helpful sometime. A decision to operate based on clinical suspicion alone can lead to removal of normal appendix in 15 - 30% cases. In some studies Modified Alvarado Scoring System (MASS was helpful in minimizing unnecessary appendectomies. The present study aims to evaluate the efficiency of Modified Alvarado scoring in preoperative diagnosis of acute appendicitis.

  7. ¿Quién es el Dr. Alvarado?

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    Arturo Jauretche

    2012-01-01

    1955, el Dr. Alvarado es separado de su cargo por la Revolución Libertadora, momento en que la Organización Panamericana de la Salud lo designa asesor regional y entre 1959 y 1964 lo nombran jefe del programa de erradicación de la malaria de la Organización Mundial de la Salud, en Ginebra, Suiza. A su regreso al país en 1966, organiza el Plan de Salud Rural, creando para ello la figura del "agente sanitario" y la "ronda sanitaria" anticipándose a conceptos que varios años después se plasmarían en la Atención Primaria de la Salud. El texto de Jauretche fue publicado originalmente en 1967 en el libro Los profetas del odio, por la editorial de Arturo Peña Lillo, editor de los grandes títulos del "pensamiento nacional" argentino. Su reedición en la sección "Memoria e historia" es un modo de rendir homenaje a una de las figuras indiscutibles de la Salud Pública argentina.

  8. Alvarado score: A valuable clinical tool for diagnosis of acute appendicitis –a retros-pective study

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    Swagata Brahmachari1 and Ashwini B. Jajee2

    2013-08-01

    Full Text Available Appendicitis is a common surgical emergency and diagnosis is still a great challenge. Accurate diagnosis and timely intervention re-duces morbidity and mortality. The present study was conducted to evaluate Alvarado scoring system for diagnosis of acute appen-dicitis in Indian set up. The study was carried out on 200 patients admitted in Surgery ward between January 2009 and December 2010 with right lower quadrant abdominal pain. Alvarado score was calculated and all patients were divided in three groups. Mean age of presentation was 29.12 years and male to female ratio was 1.27:1. Higher the Alvarado score, more is the sensitivity. So pa-tients having score 7 or above had sensitivity of 66%. We con-clude that Alvarado score is unique since it incorporates signs, symptoms and laboratory findings of suspicious patients. Alvarado score can be utilized safely for diagnosis of acute appendicitis.

  9. Records for the Neotropical River Otter in Landscapes of the Ramsar Site Alvarado Lagoon System, Mexico

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    Gilberto SILVA-LÓPEZ

    2009-04-01

    Full Text Available Studies on the Neotropical river otter (Lontra longicaudis annectens, Major, 1897 and its habitat have increased in recent years in Mexico, where the species is endangered. Together these and other observations, including studies on their feeding habits, form part of broad surveys on the mammalian fauna of specific regions. Gallo (1997 made a summary of his personal observations and other studies conducted in some Mexican regions, including records and observations of the otter in localities of, or nearby, the Alvarado municipality. Aside from these records and a study on the organic pollutants present in the aquatic habitat of the species no other specific study on this otter has been conducted in the area since this time. This paper reports personal observations on the otter, and the information provided by fishermen of the Alvarado Lagoon System (Sistema Lagunar Alvarado, which forms part of a long-term, ongoing study on the landscape ecology, biodiversity, and ecological characteristics of the area.

  10. Impact of the use of contrast-enhancement multidetector CT for acute appendicitis: a prospective comparison with the Alvarado score

    International Nuclear Information System (INIS)

    To determine the diagnostic performance of contrast-enhanced multidetector CT (MDCT) and the Alvarado score for acute appendicitis. MDCT and determination of the Alvarado score were prospectively performed in 282 patients with 146 pathologically proven cases of acute appendicitis and 136 pathologically proven or clinically diagnosed cases of non-acute appendicitis. To compare the diagnostic performance of MDCT and the Alvarado score, the patients were subdivided according to age and sex, and receiver operating characteristics (ROC) analysis and Spearman rank correlation were performed. ROC analysis revealed that the optimal cut off value of the CT appendicitis grades was 2 in all patients, resulting in a sensitivity of 96.6% and a specificity of 94.9%. The optimal cut off values of the Alvarado score was different according to age and sex, resulting in a sensitivity of 85.6% and a specificity of 48.5%. There was a significant correlation between the CT appendicitis grades and the surgical-pathological grades (r = 0.496, ρ < .0001). However, no significant correlation was observed between the Alvarado score and the surgical-pathological grades. Contrast-enhanced MDCT has a higher diagnostic accuracy and significant correlation with pathological findings than those of the Alvarado score in patients with acute appendicitis

  11. Efficiency of unenhanced MRI in the diagnosis of acute appendicitis: Comparison with Alvarado scoring system and histopathological results

    Energy Technology Data Exchange (ETDEWEB)

    Inci, Ercan, E-mail: ercan_inci@mynet.com [Department of Radiology, Istanbul Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Incirli-Bakirkoy, Istanbul (Turkey); Hocaoglu, Elif; Aydin, Sibel; Palabiyik, Figen; Cimilli, Tan [Department of Radiology, Istanbul Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Incirli-Bakirkoy, Istanbul (Turkey); Turhan, Ahmet Nuray; Ayguen, Ersan [Department of Surgery, Istanbul Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul (Turkey)

    2011-11-15

    Purpose: The purpose of this study was to assess the diagnostic value of unenhanced magnetic resonance imaging (MRI) in the diagnosis of acute appendicitis and compare with Alvarado scores and histopathological results. Materials and methods: The study included 85 consecutive patients (mean age, 26.5 {+-} 11.3 years) who were clinically suspected of having acute appendicitis. Each patients Alvarado scores were recorded and unenhanced MRI was performed, consisting of T1-weighted, T2-weighted and fat-suppressed T2-weighted fast spin-echo sequences. The MR images were prospectively reviewed in consensus for the presence of acute appendicitis by two radiologists who were blinded to the results of the Alvarado scores. The study population were divided into three subgroups based on the MRI findings: Group I: definitely not appendicitis, Group II: probably appendicitis, Group III: definitely appendicitis. All patients were divided into two subgroups according to Alvarado scores as Group A (low: 1-6), and Group B (high: 7-10). MR findings were compared with Alvarado scores and histopathological findings. Results: Sixty-six (77.6%) of the 85 patients with clinically suspected acute appendicitis, had undergone surgery. The diagnosis of appendicitis could be correctly achieved with MRI in 55 (83.3%) of 57 (86.4%) patients with histopathologically proven acute appendicitis. The sensitivity, specificity, positive predictive value and negative predictive value of MRI examination and Alvarado scoring system in the diagnosis of acute appendicitis were 96.49%, 66.67%, 94.83%, 75.0% and 84.21%, 66.67%, 94.12%, 40.0%, respectively. Conclusions: MRI is a valuable technique for detecting acute appendicitis even in the cases with low Alvarado scores. To increase the diagnostic accuracy and preventing unnecessary laparotomies for suspected appendicitis, shorter and cheaper unenhanced basic MRI may be performed.

  12. Efficiency of unenhanced MRI in the diagnosis of acute appendicitis: Comparison with Alvarado scoring system and histopathological results

    International Nuclear Information System (INIS)

    Purpose: The purpose of this study was to assess the diagnostic value of unenhanced magnetic resonance imaging (MRI) in the diagnosis of acute appendicitis and compare with Alvarado scores and histopathological results. Materials and methods: The study included 85 consecutive patients (mean age, 26.5 ± 11.3 years) who were clinically suspected of having acute appendicitis. Each patients Alvarado scores were recorded and unenhanced MRI was performed, consisting of T1-weighted, T2-weighted and fat-suppressed T2-weighted fast spin-echo sequences. The MR images were prospectively reviewed in consensus for the presence of acute appendicitis by two radiologists who were blinded to the results of the Alvarado scores. The study population were divided into three subgroups based on the MRI findings: Group I: definitely not appendicitis, Group II: probably appendicitis, Group III: definitely appendicitis. All patients were divided into two subgroups according to Alvarado scores as Group A (low: 1-6), and Group B (high: 7-10). MR findings were compared with Alvarado scores and histopathological findings. Results: Sixty-six (77.6%) of the 85 patients with clinically suspected acute appendicitis, had undergone surgery. The diagnosis of appendicitis could be correctly achieved with MRI in 55 (83.3%) of 57 (86.4%) patients with histopathologically proven acute appendicitis. The sensitivity, specificity, positive predictive value and negative predictive value of MRI examination and Alvarado scoring system in the diagnosis of acute appendicitis were 96.49%, 66.67%, 94.83%, 75.0% and 84.21%, 66.67%, 94.12%, 40.0%, respectively. Conclusions: MRI is a valuable technique for detecting acute appendicitis even in the cases with low Alvarado scores. To increase the diagnostic accuracy and preventing unnecessary laparotomies for suspected appendicitis, shorter and cheaper unenhanced basic MRI may be performed.

  13. Página web educativa destinada a docentes de General Pueyredon, Mar Chiquita y General Alvarado

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    Marquestau, Albertina

    2012-01-01

    En una sociedad cada vez más globalizada, Internet ocupa un lugar preponderante en la vida de todos y los docentes no son la excepción. En General Pueyrredon, General Alvarado y Mar Chiquita hay cerca de 15.000 educadores que requieren información del sistema para mantener sus fuentes laborales, capacitarse, inscribirse o conocer la ubicación de una escuela en la que tomaron horas. El propósito de este trabajo de investigación es demostrar la necesidad de los docentes de ...

  14. Correlation between the Alvarado Scale and the macroscopic aspect of the appendix in patients with appendicitis

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    Célio Fernando de Sousa-Rodrigues

    2014-10-01

    Full Text Available Objective: To evaluate the possible association between the scale of Alvarado (EA and macroscopic appearance (MA of the appendix in patients with acute appendicitis. Methods: after receiving the diagnosis of acute appendicitis, EA data were collected. During appendectomy, MA data were collected. Data from patients without appendicitis were excluded. The Spearman correlation test was used to compare EA with Appendix MA (p < 0.05. Other variables were represented by simple frequency. The confidence interval (CI of 95% was calculated for the correlation test. Results: Data were collected from 67 consecutive patients. The mean age was 37.1 ± 12.5 years and 77.6% of patients were male. The Spearman correlation test used for EA and MA was + 0.77 (95% CI 0.65-0.85, p < 0.0001. Conclusion: although correlation was not perfect, our data indicate that a high score on the scale of Alvarado in patients with appendicitis is correlated with advanced stages of the inflammatory process of acute appendicitis.

  15. Evaluation of modified Alvarado score in the diagnosis of acute appendicitis

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    Abhinandan B. Vandakudri

    2016-01-01

    Results: The result of the study showed that high scores in men and children (7-9 had a sensitivity of 92.3% and 83.3% respectively, whereas in females it had a sensitivity of 72.7%. The score (5-6 in males and females had a sensitivity of 57% and 50% respectively. Conclusions: The high scores in modified Alvarado score is dependable aid in the early diagnosis of acute appendicitis in men and children but it's not true as far as women are considered. Ultrasonography of abdomen is a useful tool in avoiding negative appendicectomy rates particularly in females. [Int J Res Med Sci 2016; 4(1.000: 84-88

  16. A Qualitative Assessment of Lontra longicaudis annectens Aquatic Habitats in Alvarado, Mexico

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    Gilberto Silva-López,

    2012-01-01

    Full Text Available A laboratory screening study following USEPA SW-846 test methods allowed the detection of organic compounds in the aquatic habitat of the Neotropical river otter (Lontra longicaudis annectens, in the Alvarado Lagoon System, Veracruz, Mexico. The compounds detected included 2-chlorocyclohexanol, phenylethylene glycol, benzophenone, ethanol-2-butoxyphosphate, styrene, p-xylene, ethylbenzene, trans-1,2- cyclohexanediol, di-2-ethylhexyl phthalate, benzeneacetaldehyde, hexadecane, tetracosane, docosane, triacontane, sitosterol, hexadecanoic acid, 1-eicosanol, chlorobenzene, and phosphorothioic acid trimethyl ester. Literature review showed a lack of data on the compounds´ potential effects on wildlife, although some of them could be considered harmful to the otters and their prey. The different compounds detected needs follow-up.

  17. El manatí (Trichechus manatus manatus Linnaeus,1758) (Sirenia) una especie sombrilla, para el Sistema Lagunar de Alvarado, Veracruz

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    Daniel Rentería, Iliana del Carmen; Serrano Solís, Arturo; Sánchez Rojas, Gerardo

    2010-01-01

    The most emblematic mammal in the Alvarado Lagoon System (ALS) is the West Indian manatee (Trichechus manatus manatus). In July 1975 was considered as endangered species by the Convention on International Trade in Endangered Species of Fauna and Flora (CITES), since 1982 as a vulnerable species by the International Union for Conservation of Nature (IUCN) and is considered an endangered species under Mexican laws. The manatee is a poorly studied animal in the state of Veracruz because in natur...

  18. Book review: Autonomy in Language Learning: Stories of Practices Edited by Andy Barfield and Natanael Delgado Alvarado

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    Adelia Peña Clavel

    2013-09-01

    Full Text Available Autonomy in Language Learning: Stories of Practices edited by Andy Barfield and Natanael Delgado Alvarado is an e-book published by the IATEFL Learner Autonomy Special Interest Group (LA SIG. It is the third ebook in the Autonomy in Language Learning series and is available in ePub (for iPad, Kobo and other devices and mobi (for Kindle formats. An ebook format strengthens the structure of the book. First, it allows the reader to write and share comments on the text that spark reflection, admiration or empathy. Second, statements considered relevant for one’s own practice can be highlighted.

  19. Book review: Autonomy in Language Learning: Stories of Practices Edited by Andy Barfield and Natanael Delgado Alvarado

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    Adelia Peña Clavel

    2013-01-01

    Autonomy in Language Learning: Stories of Practices edited by Andy Barfield and Natanael Delgado Alvarado is an e-book published by the IATEFL Learner Autonomy Special Interest Group (LA SIG). It is the third ebook in the Autonomy in Language Learning series and is available in ePub (for iPad, Kobo and other devices) and mobi (for Kindle) formats. An ebook format strengthens the structure of the book. First, it allows the reader to write and share comments on the text that spark reflection, a...

  20. CARACTERIZACIÓN DE VARIANTES ALÉLICAS DE CITOCROMO CYP2D6 EN LA POBLACIÓN DE LA REGIÓN CENTROCCIDENTAL DE VENEZUELA

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    GRIMÁN PEDRO

    2009-04-01

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    RESUMEN

    El gen CYP2D6 codifica para una monooxigenasa perteneciente al citocromo P450, la cual está involucrada en la biotransformación de un gran número de drogas comúnmente prescritas, como antidepresivos, antineoplásicos y antihipertensivos. Algunos efectos adversos, así como falla terapéutica pueden ser relacionados con la actividad anormal de CYP2D6 producto de polimorfismos en el gen de dicha enzima. Con el fin de predecir la frecuencia de algunos fenotipos metabolizadores pobres de CYP2D6 en la población de la región centroccidental de Venezuela se determinaron las frecuencias alélicas y genotípicas de las variantes alélicas CYP2D6*3, *4 y *6. Se extrajo ADN genómico a partir de sangre periférica de 100 individuos voluntarios aparentemente sanos, y se procedió a la genotipificación por PCR tetra-primer alelo-específica y análisis por electroforesis en geles de agarosa. Se compararon las frecuencias obtenidas con poblaciones de otros países. El alelo más frecuente fue CYP2D6*4 con 16,5%, mostrando una diferencia significativa con la reportada con poblaciones asiáticas. Este trabajo constituye un estudio preliminar en la caracterización de un grupo más amplio de alelos de CYP2D6 con el fin de asistir al desarrollo de una farmacoterapia individualizada en nuestro país.

    Palabras clave: Citocromo P450, CYP2D6, Farmacogenética.


    ABSTRACT

    The CYP2D6 gene encodes for a monooxygenase belonging to the cytochrome P450, which is involved in the biotransformation of a large number of commonly prescribed drugs such as antidepressants, antihypertensive and antineoplastic. Some side effects, as well as therapeutic failure may be related to abnormal activity of CYP2D6 product of polymorphisms in the CYP2D6 gene. In order to predict the frequency of some poor metabolisers phenotypes of CYP2D6 in the population of the

  1. Analysis of the ecosystem structure of Laguna Alvarado, western Gulf of Mexico, by means of a mass balance model

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    Cruz-Escalona, V. H.; Arreguín-Sánchez, F.; Zetina-Rejón, M.

    2007-03-01

    Alvarado is one of the most productive estuary-lagoon systems in the Mexican Gulf of Mexico. It has great economic and ecological importance due to high fisheries productivity and because it serves as a nursery, feeding, and reproduction area for numerous populations of fishes and crustaceans. Because of this, extensive studies have focused on biology, ecology, fisheries (e.g. shrimp, oysters) and other biological components of the system during the last few decades. This study presents a mass-balanced trophic model for Laguna Alvarado to determine it's structure and functional form, and to compare it with similar coastal systems of the Gulf of Mexico and Mexican Pacific coast. The model, based on the software Ecopath with Ecosim, consists of eighteen fish groups, seven invertebrate groups, and one group each of sharks and rays, marine mammals, phytoplankton, sea grasses and detritus. The acceptability of the model is indicated by the pedigree index (0.5) which range from 0 to 1 based on the quality of input data. The highest trophic level was 3.6 for marine mammals and snappers. Total system throughput reached 2680 t km -2 year -1, of which total consumption made up 47%, respiratory flows made up 37% and flows to detritus made up 16%. The total system production was higher than consumption, and net primary production higher than respiration. The mean transfer efficiency was 13.8%. The mean trophic level of the catch was 2.3 and the primary production required to sustain the catch was estimated in 31 t km -2 yr -1. Ecosystem overhead was 2.4 times the ascendancy. Results suggest a balance between primary production and consumption. In contrast with other Mexican coastal lagoons, Laguna Alvarado differs strongly in relation to the primary source of energy; here the primary producers (seagrasses) are more important than detritus pathways. This fact can be interpreted a response to mangrove deforest, overfishing, etc. Future work might include the compilation of

  2. DISTRIBUCIÓN DE POLIMORFISMOS GENÉTICOS DE INTERLEUQUINA-1 EN INDIVIDUOS DE LA REGIÓN CENTROCCIDENTAL DE VENEZUELA

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    GRIMÁN PEDRO

    2009-04-01

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    RESUMEN

    Las citoquinas pertenecientes a familia de la interleuquina-1 (IL-1 están codificadas por tres genes diferentes: IL-1A, IL-1B, e IL-1RN, los cuales codifican para IL-1 α, IL-1β, y el antagonista endógeno del receptor de IL-1 (IL-1ra, respectivamente. Las IL-1α e IL-1β actúan como citoquinas pro-inflamatorias, mientras que la IL-1ra se comporta como anti-inflamatoria. Han sido reportados varios polimorfismos bialélicos en los genes de IL-1B, incluyendo IL-1B-511(C/T e IL-1B+3954(C/T, mientras que IL-1RN presenta en el intrón 2 un polimorfismo VNTR penta-alélico. Los polimorfismos funcionalmente relevantes de estos genes han sido correlacionados con un amplio conjunto de condiciones autoinmunes e inflamatorias crónicas, así como con cáncer. Con el fin de determinar la distribución de estos polimorfismos en la región centroccidental de Venezuela, se estudiaron 100

  3. Mediación metacognitiva, estrategias de enseñanza y procesos de pensamiento del docente de Medicina Cognitive mediation, teaching strategies and thought processes of Medicine professor

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    Gianfranco Humberto Alterio Ariola

    2010-03-01

    Full Text Available Este estudio evaluó el efecto de la mediación metacognitiva sobre las estrategias de enseñanza de los docentes del Área Básica del Decanato de Medicina de la Universidad Centroccidental "Lisandro Alvarado", para interpretar los procesos de pensamiento subyacentes. Esta investigación positivista fundamentada en la teoría cognitiva del aprendizaje, presenta una complementación interpretativa para obtener un conocimiento integral de la naturaleza de los hechos estudiados. Participaron 23 docentes en un programa sobre mediación metacognitiva de 48 h académicas. Se recopiló información sobre los procesos de pensamiento en su acción docente y las estrategias de enseñanza utilizadas. Se evaluó el efecto de la intervención durante y al final de ella. Métodos: grupos de discusión, observación participante y no participante, entrevistas en profundidad, estimulación del recuerdo y cuatro cuestionarios PP-EE (procesos de pensamiento y estrategias de enseñanza con una confiabilidad r=0,80-0,98. Se emplearon estadística descriptiva y análisis de contenido. Resultados: inicialmente predominó un estilo de pensamiento poco autorregulado y el uso de estrategias de enseñanza tradicional; durante y posterior a la mediación, hubo un cambio de actitud conciente al usar estas estrategias novedosas para enseñar y aprender; se demostró la validez de este programa. Al triangular y teorizar, derivaron dos modelos: estilos de pensamiento docente y una integración pedagógica de las habilidades del pensamiento, estrategias de enseñanza y contenidos. Se recomienda la evaluación intencional de la ejecución académica docente como estrategia de autorregulación para una correcta interpretación del proceso instruccional.This study evaluated the metacognitive mediation effect on teaching strategies used by Professor of the Basic Area of Medicine Program of Decanato de Medicina, Universidad Centroccidental "Lisandro Alvarado". This positive

  4. Diversidad de ácaros (Acari: Prostigmata, Mesotigmata, Astigmata asociados a la hojarasca de formaciones vegetales del Parque Universitario de la UCLA, Venezuela Mite diversity (Acari: Prostigmata, Mesotigmata, Astigmata associated to soil litter from two vegetation zones at the University Park UCLA, Venezuela

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    Carlos Vásquez

    2007-12-01

    Full Text Available Se estudió la diversidad de los ácaros (Prostigmata, Mesostigmata y Astigmata habitantes del estrato suelo-hojarasca de un Matorral y un Bosque Deciduo del Parque Universitario de la UCLA (Universidad Centroccidental Lisandro Alvarado, Estado Lara, Venezuela, desde diciembre 2000 a noviembre 2001. El muestreo se realizó usando trampas de caída colocadas a lo largo de una transecta de 1.800 m en ambas localidades. Todos los morfotipos fueron montados en láminas microscópicas usando líquido de Hoyer. Se registró un total de 51 morfotipos de ácaros con predominancia del número de individuos pertenecientes a Prostigmata (2528 respecto a Mesostigmata (926 y Astigmata (12. En ambas localidades, Eupodidae (Prostigmata y Macrochelidae (Mesotigmata fueron las familias más abundantes. Se determinó mayor riqueza (S= 43, diversidad (H'= 2,67 y uniformidad (E= 0,69 de morfotipos en el Bosque Deciduo al ser comparado con los valores obtenidos en el Matorral (S= 36, H'= 2,12 y E= 0,52. Ambas zonas mostraron un índice de similitud (J' de 0,59. La pendiente de la curva de diversidad-dominancia permitió inferir que el Matorral constituye un hábitat más disturbado que el Bosque Deciduo a pesar de albergar mayor número de individuos. Se requiere realizar estudios más detallados que sirvan de base para determinar el rol de la acarofauna en el equilibrio de la red trófica de suelo de las regiones tropicales.Soil mite diversity (Prostigmata, Mesostigmata, Astigmata inhabiting in litter-soil layer from a Shrubland and a Deciduous Forest was estimated from December 2000 to November 2001 in the University Park of UCLA (Universidad Centroccidental Lisandro Alvarado, state of Lara, Venezuela. Samplings were made by using pitfall traps along an 1,800 m-transect in both areas. All morfotypes were mounted in microscope slides using Hoyer's medium. A total of 51 mite morfotypes were collected with higher abundance in Prostigmata (2,528 as compared to

  5. Suicide: Incidence or Prevalence? Comments on Hernández-Alvarado et al. Increase in Suicide Rates by Hanging in the Population of Tabasco, Mexico between 2003 and 2012. Int. J. Environ. Res. Public Health 2016, 13, 552.

    Science.gov (United States)

    Fernández-Niño, Julián Alfredo

    2016-01-01

    I recently reviewed the paper published in this journal by Hernández-Alvarado et al., titled "Increase in Suicide Rates by Hanging in the Population of Tabasco, Mexico between 2003 and 2012" [1], and I noticed that the epidemiological concept "prevalence" is not correctly used.[...]. PMID:27376318

  6. Validação do escore de Alvarado no diagnóstico de apendicite aguda em crianças e adolescentes no Instituto Materno Infantil de Pernambuco, IMIP The Alvarado score validation in diagnosing acute appendicitis in children and teenagers at the Instituto Materno Infantil de Pernambuco, IMIP

    Directory of Open Access Journals (Sweden)

    Paulo Sérgio Gomes Nogueira Borges

    2003-12-01

    Full Text Available OBJETIVOS: determinar a acurácia do escore de Alvarado para o diagnóstico de apendicite aguda em crianças e adolescentes admitidos na emergência do Instituto Materno Infantil de Pernambuco (IMIP. MÉTODOS: foi realizado um estudo de validação de método diagnóstico (escore clínico-laboratorial para diagnóstico de apendicite aguda tendo o exame histopatológico como padrão ouro. A amostra estudada consistiu de 81 crianças e adolescentes, admitidas na emergência pediátrica do IMIP com dor abdominal suspeita de apendicite aguda, no período de março a outubro de 2002. Os pacientes foram atendidos na emergência pediátrica e avaliados quanto ao escore de Alvarado. Entretanto a decisão cirúrgica foi tomada pelo cirurgião responsável. RESULTADOS: tomando como ponto de corte o valor >5 pontos, encontramos uma sensibilidade de 92,6%, especificidade 63,6%, valor preditivo positivo de 86,2% e valor preditivo negativo de 77,8%. CONCLUSÕES: o escore de Alvarado é um procedimento pouco invasivo, simples, rápido, reprodutível, que utilizando o ponto de corte >5 pontos apresenta-se como instrumento de alto valor na triagem de crianças e adolescentes com suspeita diagnóstica de apendicite aguda.OBJECTIVES: to determine the accuracy of the Alvarado score in diagnosing acute appendicitis in children and adolescents admitted in the emergency unit of the Instituto Materno Infantil de Pernambuco (IMIP. METHODS: a diagnostic test study was carried out (clinical and laboratory score to diagnose acute appendicitis using histopathology exam as the golden standard. The sample studied consisted of 81 children and adolescents admitted in the pediatrics emergency unit of IMIP with symptoms and signs consistent with clinical suspicion of acute appendicitis from the period of March to October 2002. Patients were examined in the pediatric emergency and assessed by the Alvarado score. Nevertheless, the decision to whether or not perform the surgery was

  7. DISTRIBUCIÓN DE POLIMORFISMOS GENÉTICOS DE INTERLEUQUINA-1 EN INDIVIDUOS DE LA REGIÓN CENTROCCIDENTAL DE VENEZUELA Distribution of Interleukin-1 Genetic Polymorphisms in Central-Western Region Individuals of Venezuela

    Directory of Open Access Journals (Sweden)

    YEINMY MORAN

    Full Text Available Las citoquinas pertenecientes a familia de la interleuquina-1 (IL-1 están codificadas por tres genes diferentes: IL-1A, IL-1B, e IL-1RN, los cuales codifican para IL-1 α, IL-1β, y el antagonista endógeno del receptor de IL-1 (IL-1ra, respectivamente. Las IL-1α e IL-1β actúan como citoquinas pro-inflamatorias, mientras que la IL-1ra se comporta como anti-inflamatoria. Han sido reportados varios polimorfismos bialélicos en los genes de IL-1B, incluyendo IL-1B-511(C/T e IL-1B+3954(C/T, mientras que IL-1RN presenta en el intrón 2 un polimorfismo VNTR penta-alélico. Los polimorfismos funcionalmente relevantes de estos genes han sido correlacionados con un amplio conjunto de condiciones autoinmunes e inflamatorias crónicas, así como con cáncer. Con el fin de determinar la distribución de estos polimorfismos en la región centroccidental de Venezuela, se estudiaron 100 individuos no relacionados aparentemente sanos. Se extrajo ADN genómico a partir de sangre periférica, y se procedió a la tipificación de los polimorfismos IL-1B-511 e IL-1B+3954 por PCR-RFLP y VNTR de IL-1RN por PCR. Se determinaron las frecuencias alélicas y genotípicas con el programa Arlequín ver. 2.000. Se observó un predominio del alelo T (52% y del alelo C (82% en IL-1B-511 y IL-1B+3954, respectivamente. Mientras que para IL-1RN los genotipos más frecuente fueron el 1/1 (47% y 1/2 (41%. Se compararon los resultados con las frecuencias poblacionales encontradas en otros países, destacándose diferencias significativas con poblaciones de diferente origen étnico. Los resultados podrían proporcionar una referencia valiosa para estudios futuros de asociación con cáncer y enfermedades inflamatorias en Venezuela.The cytokines belonging to the family of interleukin-1 (IL-1 are encoded by three different genes: IL-1A, IL-1B, and IL-1RN, which encode for IL-1α, IL-1β and the endogenous receptor antagonist for IL-1 (IL-1Ra, respectively. IL-1α and IL-1

  8. EL MODELO B-LEARNING APLICADO A LA ENSEÑANZA DEL CURSO DE MATEMÁTICA I EN LA CARRERA DE INGENIERÍA CIVIL (THE MODEL B-LEARNING APPLIED TO THE THEACHING OF COURSE OF MATHEMATICS I IN CIVIL ENGINEERING)

    OpenAIRE

    Troncoso Rodriguez Oswaldo; Cuicas Avila Marisol; Debel Chourio Edie

    2010-01-01

    Resumen:Esta experiencia tuvo como propósito la implementación del modelo b-learning en la enseñanza de la asignatura Matemática I, de la carrera de Ingeniería Civil, de la Universidad CentroccidentalLisandro Alvarado” (UCLA), ubicada en Venezuela, estado Lara. En la misma se usaron de las tecnologías Web como elementos enriquecedores del proceso de enseñanza y aprendizaje, la plataforma Moodle y la combinación de estrategias propias de la educación presencial con estrategias propias de la ...

  9. CARACTERIZACIÓN DE VARIANTES ALÉLICAS DE CITOCROMO CYP2D6 EN LA POBLACIÓN DE LA REGIÓN CENTROCCIDENTAL DE VENEZUELA Characterization Of Cytochrome Cyp2d6 Allele Variants In The Population Of The Central-Western Region Of Venezuela

    Directory of Open Access Journals (Sweden)

    PEDRO GRIMÁN

    Full Text Available El gen CYP2D6 codifica para una monooxigenasa perteneciente al citocromo P450, la cual está involucrada en la biotransformación de un gran número de drogas comúnmente prescritas, como antidepresivos, antineoplásicos y antihipertensivos. Algunos efectos adversos, así como falla terapéutica pueden ser relacionados con la actividad anormal de CYP2D6 producto de polimorfismos en el gen de dicha enzima. Con el fin de predecir la frecuencia de algunos fenotipos metabolizadores pobres de CYP2D6 en la población de la región centroccidental de Venezuela se determinaron las frecuencias alélicas y genotípicas de las variantes alélicas CYP2D6*3, *4 y *6. Se extrajo ADN genómico a partir de sangre periférica de 100 individuos voluntarios aparentemente sanos, y se procedió a la genotipificación por PCR tetra-primer alelo-específica y análisis por electroforesis en geles de agarosa. Se compararon las frecuencias obtenidas con poblaciones de otros países. El alelo más frecuente fue CYP2D6*4 con 16,5%, mostrando una diferencia significativa con la reportada con poblaciones asiáticas. Este trabajo constituye un estudio preliminar en la caracterización de un grupo más amplio de alelos de CYP2D6 con el fin de asistir al desarrollo de una farmacoterapia individualizada en nuestro país.The CYP2D6 gene encodes for a monooxygenase belonging to the cytochrome P450, which is involved in the biotransformation of a large number of commonly prescribed drugs such as antidepressants, antihypertensive and antineoplastic. Some side effects, as well as therapeutic failure may be related to abnormal activity of CYP2D6 product of polymorphisms in the CYP2D6 gene. In order to predict the frequency of some poor metabolisers phenotypes of CYP2D6 in the population of the Central-Western region of Venezuela it was determined the allelic and genotypic frequencies of CYP2D6 *3, *4, *6 allelic variants. DNA was extracted from peripheral blood of 100 apparently

  10. El software matemático como herramienta para el desarrollo de habilidades del pensamiento y el mejoramiento del aprendizaje de las matemáticas

    Directory of Open Access Journals (Sweden)

    Alvarez Vargas, Zulma

    2007-08-01

    Full Text Available Resumen: La investigación tuvo como propósito el desarrollo de habilidades del pensamiento y el mejoramiento del aprendizaje en alumnos y alumnas de la asignatura Matemática II, del Decanato de Ingeniería Civil de la Universidad CentroccidentalLisandro Alvarado” (UCLA, mediante el empleo de estrategias instruccionales basadas en el uso del software matemático. La investigación, de diseño cuasi-experimental, usó para el contraste de hipótesis la prueba t para muestras relacionadas. Además se aplicaron dos pruebas, tres asignaciones, una lista de cotejo y una entrevista semiestructurada. Los datos recogidos se analizaron utilizando estadística descriptiva. Los hallazgos del estudio fueron: (a los conocimientos de los discentes mejoraron; y (b estos pusieron en práctica sus procedimientos (sus habilidades cognoscitivas y metacognitivas. Por lo tanto, el estudio aportó evidencias para usar el software matemático bajo una metodología constructivista.ABSTRACT: The purpose of this research project was to develop thinking skills and improve learning abilities of university students attending Math II, at the School of Civil Engineering at the University CentroccidentalLisandro Alvarado” (UCLA, by utilizing instructional strategies, based on the use of mathematical software. The quasi experimental design of the study performed, to contrast the hypothesis, utilized test t for related samples. Additionally, the following instruments were applied: two exams, three assignments, a checking list and a semi structured interview. The information collected was analyzed using descriptive statistics. The research findings were: (a the students’ knowledge improved; and (b the students put into practice their procedures, that is to say, their cognitive and metacognitive skills. Hence, the study contributed to evidence the utilization of the mathematical software using a constructivist instructional methodology.

  11. Programa de enseñanza metacognitiva digitalizado para el desarrollo de habilidades de escritura en estudiantes de Ingeniería Agronómica (UCLA-Venezuela

    Directory of Open Access Journals (Sweden)

    Geisel De León

    2015-01-01

    Full Text Available El objetivo de esta investigación fue proponer un programa de enseñanza metacognitiva digitalizado para el desarrollo de habilidades de ampliación de ideas escritas en los estudiantes que cursan Comprensión Lectora del Decanato de Agronomía de la Universidad CentroccidentalLisandro Alvarado” (UCLA, Estado Lara, Venezuela. Se dirigió a una población de 35 estudiantes. La modalidad del estudio es el Proyecto Especial. Se asumieron los postulados de la Lingüística Textual y los modelos que explican la Didáctica de la Composición Escrita. El programa se aplicó en la modalidad de aprendizaje semipresencial. Como resultado se crearon textos argumentativos que evidenciaron el desarrollo de competencias para comunicar ideas de forma escrita. Se concluyó que la aplicación de procesos metacognitivos y la participación en un entorno virtual de aprendizaje digitalizado, favorece la adquisición de competencias textuales. Se propone la aplicación del programa como un curso electivo en distintas carreras de la UCLA.

  12. EL MODELO B-LEARNING APLICADO A LA ENSEÑANZA DEL CURSO DE MATEMÁTICA I EN LA CARRERA DE INGENIERÍA CIVIL (THE MODEL B-LEARNING APPLIED TO THE THEACHING OF COURSE OF MATHEMATICS I IN CIVIL ENGINEERING

    Directory of Open Access Journals (Sweden)

    Troncoso Rodriguez Oswaldo

    2010-12-01

    Full Text Available Resumen:Esta experiencia tuvo como propósito la implementación del modelo b-learning en la enseñanza de la asignatura Matemática I, de la carrera de Ingeniería Civil, de la Universidad CentroccidentalLisandro Alvarado” (UCLA, ubicada en Venezuela, estado Lara. En la misma se usaron de las tecnologías Web como elementos enriquecedores del proceso de enseñanza y aprendizaje, la plataforma Moodle y la combinación de estrategias propias de la educación presencial con estrategias propias de la educación virtual. La metodología utilizada corresponde a un proyecto factible orientado hacia la innovación tecnológica, pues busca resolver problemas y promover el empleo de tecnologías. El análisis de los resultados se enfocó a la eficiencia y eficacia de la propuesta. Para la eficiencia se analizaron los resultados de las entrevistas semi-estructuradas y las expectativas despertadas por el curso. Además, se consideraron los resultados de la alfabetización tecnológica y de la prueba de conocimientos previos necesarios para Matemática I. Para la eficacia se consideró el rendimiento académico y la calidad general del curso. Como conclusión se destaca que el modelo b-learning posibilita la participación activa del estudiante, pero el docente debe diseñar de manera pedagógica situaciones de aprendizaje para apoyar, informar, comunicar e interactuar pues esta es una forma se puede generar en el estudiante conocimientos específicos de la asignatura y promover en ellos el desarrollo de estrategias para el aprendizaje autónomo.Abstract:This experience had as a purpose the implementation of the b-learning model in the teaching of the Mathematics I, in the Civil Engineering, of the University CentroccidentalLisandro Alvarado” (UCLA, located in Lara state, Venezuela. In the same one they were used of the Web technologies like wealth-producing elements of the process of education and learning, the platform Moodle and the

  13. Records for the Neotropical River Otter in Landscapes of the Ramsar Site Alvarado Lagoon System, Mexico

    OpenAIRE

    Gilberto SILVA-LÓPEZ

    2009-01-01

    Studies on the Neotropical river otter (Lontra longicaudis annectens, Major, 1897) and its habitat have increased in recent years in Mexico, where the species is endangered. Together these and other observations, including studies on their feeding habits, form part of broad surveys on the mammalian fauna of specific regions. Gallo (1997) made a summary of his personal observations and other studies conducted in some Mexican regions, including records and observations of the otter in localitie...

  14. X-ray fluorescence in Member States: Venezuela

    International Nuclear Information System (INIS)

    The direct analysis of biological samples is the main research challenge of the scientific group at the Unidad de Analisis Instrumental of the Agronomy Faculty, Universidad Centro Occidental Lisandro Alvarado, (UCLA) Edo. Lara, Venezuela. The technique of total reflection X-ray fluorescence (TXRF) plays an important role in the scientific activities of the laboratory. In this field, the research is devoted to the design, development, evaluation and application of methods for the analysis of biological and related samples, such as biological tissues, fluids, biota, soil and water samples. The studies involve the evaluation of feasibility for direct determination of analytes, the in situ (in quartz sample holder) preparation techniques, the in situ pre-concentration and speciation among others studies. The methods are developed for the application in clinical studies, agronomy, environmental monitoring, bioremediation, statistical processing of data and neural network applications. The following projects are described: Direct analysis of biological samples by TXRF; Determination of calcium, potassium, manganese, iron, cooper and zinc levels in representative samples of two onion cultivars using TXRF and ultrasound extraction procedure; Evaluation of vermicompost as bioadsorbent substrate of Pb, Ni, V and Cr for waste waters remediation using total reflection X-ray fluorescence; Determination by TXRF of total As in onion plants growing in contaminated substrates

  15. Miradas desde el humedal. Fotografía participativa con pescadoras y pescadores del sistema lagunar de Alvarado

    Directory of Open Access Journals (Sweden)

    Mariana Báez Ponce

    2014-01-01

    Full Text Available Se muestran los resultados de una investigación cualitativa cuya herramienta principal fue fotovoz, enmarcada en el campo de la antropología visual y la fotografía participativa. El objetivo central fue explorar las percepciones y valoraciones relacionadas con el uso y manejo de un humedal, ubicado en la zona costera central de Veracruz, que tienen pescadoras y pescadores cooperativistas. Se estudiaron también los significados e impactos de las cooperativas en el en - torno familiar y comunitario. El área de estudio es valiosa por su diversidad biológica, extensión de zonas inundables importantes para la conservación y la presencia de un mosaico étnico que ha construido una identidad estrechamente vinculada a este ecosistema. Por medio de un proceso de reflexión y construcción de historias con imágenes, mujeres y hombres describen percepciones, preocupaciones, sueños y pasiones sobre su territorio y cooperativas. Existe una diferenciación genérica en las fotografías construidas y perspectivas sobre este humedal. Concluimos describien - do las experiencias surgidas al usar esta metodología, que brindó un punto de vista diferente para observar y reconocerse.

  16. Procedimientos de conservación del material óseo del sitio arqueológico Nutria Mansa 1 (Patrido de General Alvarado, Provincia de Buenos Aires

    OpenAIRE

    Diego Catriel Leon; Maria José Cigorraga

    2006-01-01

    Los objetos enterrados en los sitios arquelógicos con el tiempo logran un equilibrio físico-químico con su medio circundante. Cuando son expuestos a las condiciones atmosféricas mediante la excavación1 , tales objetos pierden este equilibrio, ya que suceden cambios abruptos en la temperatura y humedad relativa a la que están sometidos, así como también en la exposición a la luz y al oxígeno. Es entonces cuando pueden acelerarse los procesos destructivos del ma...

  17. Condición actual del mercado del abono orgánico en el cantón de Alvarado, Cartago

    Directory of Open Access Journals (Sweden)

    Laura Brenes-Peralta

    2014-06-01

    Con estas acciones, además de gestionar adecuadamente los residuos sólidos orgánicos según establece la legislación nacional, y ofrecer un producto amigable con el ambiente a los agricultores de la zona, se podría generar un ingreso que permita el autosostenimiento de esta actividad.

  18. Correction: Alvarado, M., et al. Towards the Development of a Low Cost Airborne Sensing System to Monitor Dust Particles after Blasting at Open-Pit Mine Sites. Sensors 2015, 15, 19667–19687

    Directory of Open Access Journals (Sweden)

    Miguel Alvarado

    2016-07-01

    Full Text Available The author wishes to change Figure 1 and Figure 3 from his paper published in Sensors [1], doi:10.3390/s150819667, website: http://www.mdpi.com/1424-8220/15/8/19667 for Figures 1 and 2 presented in this ‘Correction’.[...

  19. Application of scoring systems with point-of-care ultrasonography for bedside diagnosis of appendicitis

    Science.gov (United States)

    Ünlüer, Erden Erol; Urnal, Rıfat; Eser, Utku; Bilgin, Serkan; Hacıyanlı, Mehmet; Oyar, Orhan; Akoğlu, Haldun; Karagöz, Arif

    2016-01-01

    BACKGROUND: Appendicitis is a common disease requiring surgery. Bedside ultrasound (BUS) is a core technique for emergency medicine (EM). The Alvarado score is a well-studied diagnostic tool for appendicitis. This study aimed to investigate the relationship between patients’ symptoms, Alvarado score and ultrasound (US) findings, as performed by emergency physicians (EPs) and radiologists, of patients with suspected appendicitis. METHODS: Three EM specialists underwent the BUS course and core course for appendicitis assessment. Patients suspected of having appendicitis were selected and their Alvarado and modified (m) Alvarado scores calculated. The specialists performed the BUS. Then, patients were given a formal US and surgery consultation if necessary. Preliminary diagnoses, admission or discharge from the emergency department (ED) and final diagnosis were documented. The patients were also followed up after discharge from the hospital. RESULTS: The determined cut-off value was 2 for Alvarado and 3 for mAlvarado scores. The sensitivities of the two scores were 100%. Each score was used to rule out appendicitis. The results of EP-performed BUS were as follows: accuracy 70%, sensitivity 0.733, specificity 0.673, + LR 2.24, and – LR 0.40 (95%CI). Radiologists were better than EPs at diagnosing appendicitis and radiologists and EPs were equally strong at ruling out appendicitis by US. When US was combined with Alvarado and mAlvarado scores, EP US+Alvarado/mAlvarado scores <3 and radiology US+Alvarado/mAlvarado scores <4 perfectly ruled out appendicitis. CONCLUSION: BUS performed by EPs is moderately useful in detecting appendicitis. Combined with scoring systems, BUS may be a perfect tool for ruling out decisions in EDs. PMID:27313807

  20. Response to the Fernández-Niño Comments on Hernández-Alvarado et al. Increase in Suicide Rates by Hanging in the Population of Tabasco, México between 2003 and 2012. Int. J. Environ. Res. Public Health 2016, 13, 552

    Directory of Open Access Journals (Sweden)

    Mervyn Manuel Hernández-Alvarado

    2016-07-01

    Full Text Available We thank the comments of Fernández-Niño [1] addressing our article [2] “Increase in Suicide Rates by Hanging in the Population of Tabasco, Mexico between 2003 and 2012”, which pointed out that the use of the epidemiological concept “prevalence” is not correctly applied in the present manuscript.

  1. Response to the Fernández-Niño Comments on Hernández-Alvarado et al. Increase in Suicide Rates by Hanging in the Population of Tabasco, México between 2003 and 2012. Int. J. Environ. Res. Public Health 2016, 13, 552.

    Science.gov (United States)

    Hernández-Alvarado, Mervyn Manuel; González-Castro, Thelma Beatriz; Tovilla-Zárate, Carlos Alfonso; Fresán, Ana; Juárez-Rojop, Isela E; López-Narváez, María Lilia; Villar-Soto, Mario; Genis-Mendoza, Alma

    2016-01-01

    We thank the comments of Fernández-Niño [1] addressing our article [2] "Increase in Suicide Rates by Hanging in the Population of Tabasco, Mexico between 2003 and 2012", which pointed out that the use of the epidemiological concept "prevalence" is not correctly applied in the present manuscript. PMID:27376319

  2. Suspected acute appendicitis in female patients: Trends in diagnosis in emergency department in a University Hospital in Western region of Saudi Arabia

    International Nuclear Information System (INIS)

    Objective was to determine the negative appendectomy rate; utilization, accuracy of Alvarado scale, ultrasound (US), computed tomography (CT) in diagnosis of acute appendicitis. Hospital records of 124 female patients admitted for suspicious of acute appendicitis from January 2003-January 2004 to the Emergency Department (ED) at King Abdul-Aziz University Hospital Jeddah, Saudi Arabia were reviewed retrospectively. We reviewed the age of patients, clinical presentation, Alvarado scale, US, CT, histopathalogical diagnosis of appendicular specimen. A total of 124 female patients aged 6-64 years were presented to ED with right iliac fossa pain. Of the total, 103 patients have appendectomies (83.1%), 21 (16.9%) patients underwent conservative treatment. Prevalence of advanced appendicitis was 13.7% and negative appendectomy rate was 27.2%. Accuracy rate of appendicitis with Alvarado scale 67.7%, US was 57.9% CT was 66.7%. Postoperative correlation was found between advanced cases and Alvarado scale (r=0.338), and hospital stay duration (r=0.250, p<0.01). Clinical findings and experiments remain of major importance in appendicitis-diagnosis. When appendicitis appears with atypical presentations, it remains a clinical challenge. In such cases, laboratory and imaging investigation may be useful in establishing a correct diagnosis. Alvarado scoring system is easy, simple and cheap complementary aid for supporting the diagnosis of acute appendicitis especially for junior surgeons. (author)

  3. Accuracy of Ultrasonography in Diagnosing Acute Appendicitis

    OpenAIRE

    Parisa Javidi Parsijani; Nima Pourhabibi Zarandi; Shahram Paydar; Hamidreza Abbasi; Shahram Bolandparvaz

    2013-01-01

    Objectives: To evaluate the accuracy of sonography in diagnosing acute appendicitis in patients with Alvarado score 4–7.Methods: This is a retrospective cross-sectional study being performed in Namazee hospital affiliated with Shiraz University of Medical sciences during a one year period from 9/2007 to 9/2008. We evaluated all patients with Alvarado score 4-7 and divided them in two groups: those with Ultrasound study prior to surgery and those without any imaging modalities for diagnosis of...

  4. CPAP Tips

    Medline Plus

    Full Text Available ... 38. AlvaradoHospital 119,349 views 6:38 Cool New Tool Helps Cure Sleep Apnea - As Featured on ... Terms Privacy Policy & Safety Send feedback Try something new! Loading... Working... Sign in to add this to ...

  5. CPAP Tips

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    Full Text Available ... 38. AlvaradoHospital 117,493 views 6:38 Cool New Tool Helps Cure Sleep Apnea - As Featured on ... Terms Privacy Policy & Safety Send feedback Try something new! Loading... Working... Sign in to add this to ...

  6. CPAP Tips

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    Full Text Available ... 38. AlvaradoHospital 116,451 views 6:38 Cool New Tool Helps Cure Sleep Apnea - As Featured on ... Terms Privacy Policy & Safety Send feedback Try something new! Loading... Working... Sign in to add this to ...

  7. CPAP Tips

    Medline Plus

    Full Text Available ... 38. AlvaradoHospital 116,177 views 6:38 Cool New Tool Helps Cure Sleep Apnea - As Featured on ... Terms Privacy Policy & Safety Send feedback Try something new! Loading... Working... Sign in to add this to ...

  8. CPAP Tips

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    Full Text Available ... 38. AlvaradoHospital 116,724 views 6:38 Cool New Tool Helps Cure Sleep Apnea - As Featured on ... Terms Privacy Policy & Safety Send feedback Try something new! Loading... Working... Sign in to add this to ...

  9. CPAP Tips

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    Full Text Available ... 38. AlvaradoHospital 117,136 views 6:38 Cool New Tool Helps Cure Sleep Apnea - As Featured on ... Terms Privacy Policy & Safety Send feedback Try something new! Loading... Working... Sign in to add this to ...

  10. 75 FR 64782 - Additional Designations, Foreign Narcotics Kingpin Designation Act

    Science.gov (United States)

    2010-10-20

    ... Act. The list of designees is as follows: Entities 1. GENETICA GANADERA RANCHO ALEJANDRA S.P.R. DE R...; (ENTITY) . 2. GENETICA IMPORT-EXPORT S.P.R. DE R.L. DE C.V., Calle Alvarado No. 143, Local 5-J, Zona...- 690830 (Mexico); (INDIVIDUAL) . 14. OLVERA ESTRADA, Rodolfo, c/o GENETICA GANADERA RANCHO ALEJANDRA...

  11. El folclore infantil y la folclorística checa

    Czech Academy of Sciences Publication Activity Database

    Pospíšilová, Jana

    Madrid: Centro de Linguistica Aplicada Atenea, 2010 - (Bojnicanova, R.; Alvarado, S.), s. 123-138 ISBN 978-84-15194-00-2 Institutional research plan: CEZ:AV0Z90580513 Keywords : children’s lore * children’s folklore * ethnology Subject RIV: AC - Archeology, Anthropology, Ethnology

  12. CPAP Tips

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    Full Text Available ... 38. AlvaradoHospital 117,938 views 6:38 Cool New Tool Helps Cure Sleep Apnea - As Featured on ... Terms Privacy Policy & Safety Send feedback Try something new! Loading... Working... Sign in to add this to ...

  13. Comparison of in vitro methods for the production of Paenibacillus larvae endospores.

    Science.gov (United States)

    Alvarado, Israel; Elekonich, Michelle M; Abel-Santos, Ernesto; Wing, Helen J

    2015-09-01

    Paenibacillus larvae endospores are the infectious particles of the honey bee brood disease, American Foulbrood. We demonstrate that our previously published protocol (Alvarado et al., 2013) consistently yields higher numbers and purer preparations of P. larvae endospores, than previously described protocols, regardless of the strain tested (B-3650, B-3554 or B-3685). PMID:26130193

  14. STUDY OF CORRELATION OF MODIFIED ALAVARADO SCORING WITH HISTOPATHOLOGY AND EARLY POST OPERATIVE COMPLICATIONS

    Directory of Open Access Journals (Sweden)

    Rajanna

    2014-11-01

    Full Text Available Appendicitis being the commonest acute abdominal surgical condition, although diagnosis can be made clinically but possess diagnostic difficulty to junior surgeons. The need for appropriate tool/scoring system that can be easily applicable, accurate & reproducible in the diagnosis of appendicitis is essential to have a low negative Appendicectomy rate. This prospective study is designed to assess one such scoring system, i.e., Modified Alvarado Score. MATERIALS AND METHODS: SETTING AND DURATION: Department of Surgery, Hassan Institute of Medical Sciences/Teaching Hospital, Hassan. From August 2013 to September 2014. A total of 227 consecutive male and female patients with age above 14 years presenting with right lower abdominal pain were enrolled in this study, analysed according to eight variables of Modified Alvarado scoring system and were accordingly placed into 3 groups. Group–I patients having score 1–4 were discharged, Group-II patients having score 5–6 were observed, while Group-III patients having score 7–10 were operated and all the operated patients were followed up for 30 days. These groups were compared with intra-operative findings, histopathological results & early post –operative complications. RESULTS: Of the total 227 patients included in this study, 155 underwent Appendicectomy based on the Modified Alvarado scoring system. Out of 155 operated patients 142(91.6% had acute appendicitis, thus yielding a positive predictive value of 91.6% while negative appendicectomy rate 9.3%. Frequency of negative appendicectomy was 5.3% (5/94 among males and 9.4% (08/61 in females. Post-operative complication rate including wound infection, pelvic abscess, chest and urinary tract infection was 10.3% (16/155. CONCLUSION: The present study showed that Alvarado clinical scoring system has a high diagnostic value of 90%. Alvarado scoring system is dynamic one & its proper application improves diagnostic accuracy. There by reduce the

  15. Feeding habits and trophic morphology of inshore lizardfish (Synodus foetens) on the central continental shelf off Veracruz, Gulf of Mexico

    OpenAIRE

    Cruz Escalona, Víctor Hugo; Peterson, M S; Campos Dávila, Lucia; Zetina Rejón, Manuel Jesús

    2005-01-01

    The inshore lizardfish, Synodus foetens, is one of the most common coastal demersal predators on the continental shelf of the Gulf of Mexico (GOM), but the biology and feeding ecology of this species is virtually unknown. Between November 2001 and January 2003 (10 collections), 603 individuals of S. foetens ranging from 112 to 420 mm standard length (SL) and 13 to 630 g (wet weight) were collected from the continental shelf of Alvarado, Veracruz, Mexico. About 60% of the individuals had empty...

  16. Evaluation of Dentaport ZX and Raypex 6 electronic apex locators: An in vivo study

    OpenAIRE

    Moscoso, Saddy; Pineda, Kenneth; Basilio, Juan; Alvarado, Carlos; Roig Cayón, Miguel; Duran Sindreu, Fernando

    2013-01-01

    Med Oral Patol Oral Cir Bucal. 2014 Mar 1;19 (2):e202-5. Evaluation of Dentaport ZX and Raypex 6: An in vivo study e202 Journal section: Clinical and Experimental Dentistry Publication Types: Research Evaluation of Dentaport ZX and Raypex 6 electronic apex locators: An in vivo study Saddy Moscoso 1 , Kenneth Pineda 1 , Juan Basilio 1 , Carlos Alvarado 2 , Miguel Roig 2 , Fernando Duran- Sindreu 3 1 MD, Department of Restorative...

  17. Correlation between the serum and tissue levels of oxidative stress markers and the extent of inflammation in acute appendicitis

    Directory of Open Access Journals (Sweden)

    Ersin Gürkan Dumlu

    2014-12-01

    Full Text Available OBJECTIVES: To determine the serum and tissue levels of markers of impaired oxidative metabolism and correlate these levels with the histopathology and Alvarado score of acute appendicitis patients. METHOD: Sixty-five acute appendicitis patients (mean age, 31.4±12.06 years; male/female, 30/35 and 30 healthy control subjects were studied. The Alvarado score was recorded. Serum samples were obtained before surgery and 12 hours postoperatively to examine the total antioxidant status, total oxidant status, paraoxonase, stimulated paraoxonase, arylesterase, catalase, myeloperoxidase, ceruloplasmin, oxidative stress markers (advanced oxidized protein products and total thiol level and ischemia-modified albumin. Surgical specimens were also evaluated. RESULTS: The diagnoses were acute appendicitis (n = 37, perforated appendicitis (n = 8, phlegmonous appendicitis (n = 12, perforated+phlegmonous appendicitis (n = 4, or no appendicitis (n = 4. The Alvarado score of the acute appendicitis group was significantly lower than that of the perforated+phlegmonous appendicitis group (p = 0.004. The serum total antioxidant status, total thiol level, advanced oxidized protein products, total oxidant status, catalase, arylesterase, and ischemia-modified albumin levels were significantly different between the acute appendicitis and control groups. There was no correlation between the pathological extent of acute appendicitis and the tissue levels of the markers; additionally, there was no correlation between the tissue and serum levels of any of the parameters. CONCLUSIONS: The imbalance of oxidant/antioxidant systems plays a role in the pathogenesis acute appendicitis. The Alvarado score can successfully predict the presence and extent of acute appendicitis.

  18. Nacionalismo e internacionalismo en las ciencias de la salud: el caso de la lucha antipalúdica en la Argentina

    OpenAIRE

    Kohn Loncarica, Alfredo G.; Agüero, Abel L.; Sánchez, Norma Isabel

    1997-01-01

    The sanitary physician Carlos Alvarado Albert (1904-1986), accomplished a work that resulted in the eradication of malaria in Argentina. His work could come as an example of the thorny question of nationalism and internationalism in science. The authors of this work expound that the experience that the played the mentioned doctor, constitutes a remarkable sample of the inconvenience of transplanting on an automatic way any technical area and scientific effective procedures to other places, wh...

  19. First report of fossilized cysts produced by the benthic Bysmatrum subsalsum (Dinophyceae) from a shallow Mexican lagoon in the Gulf of Mexico

    OpenAIRE

    Limoges, A.; K. N. Mertens; Ruiz-Fernandez, C; de Vernal, A.

    2015-01-01

    Cysts belonging to the benthic dinoflagellate Bysmatrum subsalsum were recovered from palynologically treated sediments collected in the Alvarado Lagoon (southwestern Gulf of Mexico). The cysts are proximate, reflecting the features of the parent thecal stage, and their autofluorescence implies a dinosporin composition similar to the cyst walls of phototrophic species. This finding is important for our understanding of B. subsalsum life cycle transitions and ecology. Encystment may play an im...

  20. Silêncios, os Sons dos Rios, os Sons das Cidades: Los Muertos e Liverpool

    Directory of Open Access Journals (Sweden)

    COSTA, Fernando Morais da

    2012-04-01

    Full Text Available This arcticle aims to analyze the relation between sounds and images in Lisandro Alonso’s Los Muertos and Liverpool. It is of our interest to think about the narrative roles given to sound effects and ambient sounds, to speak of the importance given to such sound elements, opposite to the minor role played by music and dialogue, all that working within the cinematic regime of the sequence shot. Therefore, this work tries, most of all, to investigate how ambient sounds and diegetic noises contribute for such a particular temporal construction. It is also a secundary goal to establish some relationship between those films and other examples of a cinema that has declined the usual dialogue’s central narrative part, as well as to recall the ideia and definition of a cinema of poetry.

  1. Determinación de arsénico en abastecimientos de agua para consumo humano de la provincia de Cartago, Costa Rica

    OpenAIRE

    Virginia Montero-Campos; Jaime Quesada-Kimsey; Aura Ledezma-Espinoza; José A Sandoval-Mora

    2010-01-01

    Objetivos: Divulgar conocimiento científico sobre el hidroarsenicismo en América Latina, y determinar la presencia de arsénico en agua utilizada para consumo humano en lugares de riesgo en Costa Rica, específicamente en la provincia de Cartago, en los cantones de Oreamuno, Central, Paraíso y Alvarado. Métodos: Cuantificación de arsénico en su forma reducida trivalente, mediante generación de hidruros metálicos volátiles por absorción atómica de llama, metodología 7062 de la Agencia de Protecc...

  2. Costa Rican soils contain highly insecticidal granulovirus strains against Phthorimaea operculella and Tecia solanivora

    OpenAIRE

    Gomez-Bonilla, Y.; Lopez-Ferber, M.; P. Caballero; Léry, Xavier; Munoz, D.

    2012-01-01

    The aim of this work was to isolate and characterize novel Phthorimaea operculella granulovirus (PhopGV) strains from Costa Rican soils. Three novel strains, named PhopGV-CR3, PhopGV-CR4 and PhopGV-CR5, were isolated from three locations in Costa Rica, Alvarado, Zarcero and Abangares, respectively, by means of soaking potato tubers with diluted soil samples. An additional strain, PhopGV-CR2, was identified from diseased larvae from a Tecia solanivora laboratory culture. Restriction fragment l...

  3. Attitudes Toward Immigrants and Multiculturalism in Contemporary America: The Role of Foreign Language Fluency

    Directory of Open Access Journals (Sweden)

    Emanuel Alvarado

    2009-10-01

    Full Text Available Drawing from sociological research seeking to explain variation in attitudes toward immigrants and immigration policy, it is found that knowledge and proficiency in a language other than English is associated with more favorable views towards immigrants and towards multiculturalism in contemporary America. Alvarado reviews the literature on sociological research on immigrant attitudes, explores the nexus between foreign language learning and appreciation for foreign culture(s, and presents the methodology and analysis used to test the strength of the association between knowledge in a foreign language and favorable views towards immigrants and multiculturalism in the United States.

  4. Iglesia y Sociedad: 500 Años en Puerto Rico y el Caribe, Siglo XVI. Actas del II Simposio «Las primeras diócesis y la estructura eclesial hispanoantillana durante el siglo XVI: su impacto sociocultural». [Reseña

    OpenAIRE

    Luque-Alcaide, E. (Elisa)

    2009-01-01

    Reseña de: Manuel Alvarado Morales – Marie Minette Díaz Burley (eds.), Iglesia y Sociedad: 500 Años en Puerto Rico y el Caribe, Siglo XVI. Actas del II Simposio «Las primeras diócesis y la estructura eclesial hispanoantillana durante el siglo XVI: su impacto sociocultural», Arzobispado de San Juan de Puerto Rico-Centro de Estudios Avanzados de Puerto Rico y El Caribe-Centro de Investigaciones Históricas de la Universidad de Puerto Rico-Academia Puertorriqueña de ...

  5. C-V Calculations in CdS/CdTe Thin Films Solar Cells with a CdSxTe1-x Interlayer

    OpenAIRE

    Gonzalez-Cisneros, A.; F. de L. Castillo-Alvarado; J. Ortiz-Lopez; G. Contreras-Puente

    2013-01-01

    In CdS/CdTe solar cells, chemical interdiffusion at the interface gives rise to the formation of an interlayer of the ternary compound CdSxCdTe1-x. In this work, we evaluate the effects of this interlayer in CdS/CdTe photovoltaic cells in order to improve theoretical results describing experimental C-V (capacitance versus voltage) characteristics. We extended our previous theoretical methodology developed on the basis of three cardinal equations (Castillo-Alvarado et al., 2010). The present r...

  6. La construcción y de-construcción de la memoria : Deshaciendo los caminos del sentido común y las ideas hechas, a partir de una experiencia de extensión universitaria

    OpenAIRE

    Lanteri, Ana Laura; Cuadra Centeno, Pablo Andrés; Ayrolo, Valentina

    2008-01-01

    El presente trabajo es el resultado de una experiencia grupal de extensión universitaria que realizamos durante el año 2006 en las ciudades bonaerenses de Miramar (partido de General Alvarado), Mar del Plata (partido de General Pueyrredón) y Santa Clara del Mar (partido de Mar Chiquita). Esta actividad formó parte de un proyecto colectivo más amplio: “Bicentenarios. Dos siglos de memoria colectiva” que venimos desarrollado desde entonces y que se enmarca en los festejos y conmemoraciones que ...

  7. LA CARGA DINÁMICA PROBATORIA Y SU REPERCUSIÓN EN EL PROCESO PENAL DESDE LAS REGLAS DE MALLORCA Y LA TEORÍA DEL GARANTISMO PENAL

    Directory of Open Access Journals (Sweden)

    Sebastián Betancourt Restrepo

    2010-01-01

    Full Text Available El presente artículo pretende hacer algunos cuestionamientos en torno a la implementación de la teoría de la carga dinámica de la prueba en la actuación penal, a partir de los elementos brindados por las Reglas de Mallorca y la teoría del garantismo penal, defendida por el profesor Luigi Ferrajoli en Italia, y en Argentina por el profesor Adolfo Alvarado Velloso, desde la perspectiva de una sistemática procesal penal, reconocedora de garantías universales como el debido proceso.

  8. Morphological characterization and histopathology of Peronospora ciceris in chickpea (Cicer arietinum L.) leaves and seeds

    OpenAIRE

    Dagoberto Fierro-Corrales; Miguel Ángel Apodaca-Sánchez; José Alberto Quintero-Benítez; Santos Gerardo Leyva-Mir; Jorge Luis Flores-Sánchez; Juan Manuel Tovar-Pedraza

    2015-01-01

    El mildiu del garbanzo, es una de las enfermedades más destructivas que se ha encontrado esporádicamente en campos de garbanzo, localizados en los municipios de Salvador Alvarado y Guasave, Sinaloa, México. Los objetivos de este estudio fueron caracterizar morfológicamente a la especie de Peronospora, causante del mildiu del garbanzo; así como, describir los cambios histológicos que induce el patógeno en semillas y foliolos de garbanzo, con diferentes estados de infección (inicial, intermedia...

  9. Bibliographie

    OpenAIRE

    2013-01-01

    Aguirre Beltrán, Gonzálo, 1953, Formas de gobierno indígena, México, Imprenta Universitaria. Alvarado de Tezozomoc, Hernando de, 1987, Crónica Mexicana, México, Éd. Porrúa, 2 t. Anderson, Arthur J. O. et Dibble, Charles E., 1953-1982, Florentine Codex, Utah, The University of Utah, The School of American Research, 12 vol. Barrera Hernández Abel, 1996, Ritualidad y poder entre los Nahuas de la Montaña de Guerrero, Cultura y derechos de los pueblos indígenas de México, México, Fondo de Culture ...

  10. Predicting outcome after appendicectomy.

    LENUS (Irish Health Repository)

    Kell, M R

    2012-02-03

    AIM: To validate an intraoperative appendicitis severity score (IASS) and examine outcome following emergency appendectomy. METHODS: A prospective study was undertaken, enrolling consecutive patients undergoing emergency appendicectomy. Data were obtained independently on preoperative Alvarado scores, IASS (0-3: 0 no inflammation, 1 engorged appendix\\/no peritonitis, 2 peritoneal reaction\\/exudate or 3 evidence of perforation\\/abscess) and postoperative outcome parameters. RESULTS: There were 149 patients identified with a mean age of 20.7 years. There was no association between Alvarado score and length of hospital stay, septic complication, patient sex or duration of symptoms (p>0.05). IASS was found to be an independent risk factor for septic complication, wound infection (p<0.05) and length of hospital stay (p<0.001). There was no correlation between preoperative duration of symptoms or time until surgery and intraoperative score. CONCLUSIONS: This simple scoring system can identify patients more likely to suffer morbidity following emergency appendicectomy. Specifically, this system identifies patients who have a high risk of sepsis and therefore could be of use when comparing healthcare performance.

  11. Nacionalismo e internacionalismo en las ciencias de la salud: el caso de la lucha antipalúdica en la Argentina

    Directory of Open Access Journals (Sweden)

    Kohn Loncarica, Alfredo G.

    1997-12-01

    Full Text Available The sanitary physician Carlos Alvarado Albert (1904-1986, accomplished a work that resulted in the eradication of malaria in Argentina. His work could come as an example of the thorny question of nationalism and internationalism in science. The authors of this work expound that the experience that the played the mentioned doctor, constitutes a remarkable sample of the inconvenience of transplanting on an automatic way any technical area and scientific effective procedures to other places, when he in fact what is convenient for the peripheral countries is the development of its own investigation.

    El médico sanitaristo Carlos Alberto Alvarado (1904-1986 realizó una obra que dio como resultado la erradicación del paludismo en la Argentina y puede presentarse como una ejemplificación de la espinosa cuestión del nacionalismo y el internacionalismo en la ciencia. Exponen los autores que la experiencia que protagonizó constituye una notable muestra de la inconveniencia de transplantar automáticamente a cualquier área, técnicas y procedimientos científicos eficaces en otros medios, siendo conveniente el desarrollo de investigación propia en los países periféricos.

  12. Theban victory at Haliartos (395 B.C.

    Directory of Open Access Journals (Sweden)

    Pascual, José

    2007-12-01

    Full Text Available This paper reviews the battle of Haliartos (395 B.C. analyzing the strategy of the contendings, both sides contingents and the routes followed by the armies in their way to the battlefield, especially Lysander, who used an inland boiotian route, the route of Koutomoulia and Evangelistria, and camped in the surroundings of modern Mazi about one kilometre to the south of Haliartos, and drew up in battle to a great extent as a Theban ambush.

    Este trabajo examina la batalla de Haliarto (395 B.C. analizando la estrategia de los contendientes, los contingentes que concurrieron en ambos bandos y las rutas que siguieron los diferentes ejércitos hasta el campo de batalla, especialmente Lisandro, que empleó una ruta por el interior de Beocia, la ruta de Koutoumoulia y Evangelistria, y acampó en torno a la actual Mazi, aproximadamente a un kilómetro al sur de Haliarto, y presenta la batalla en gran medida como una emboscada tebana.

  13. First report of fossilized cysts produced by the benthic Bysmatrum subsalsum (Dinophyceae) from a shallow Mexican lagoon in the Gulf of Mexico.

    Science.gov (United States)

    Limoges, Audrey; Mertens, Kenneth Neil; Ruíz-Fernández, Ana-Carolina; de Vernal, Anne

    2015-02-01

    Cysts belonging to the benthic dinoflagellate Bysmatrum subsalsum were recovered from palynologically treated sediments collected in the Alvarado Lagoon (southwestern Gulf of Mexico). The cysts are proximate, reflecting the features of the parent thecal stage, and their autofluorescence implies a dinosporin composition similar to the cyst walls of phototrophic species. This finding is important for our understanding of B. subsalsum life cycle transitions and ecology. Encystment may play an important role in the bloom dynamics of this species as it can enable the formation of a sediment cyst bank that allows reinoculation of the water column when conditions become favorable. This is the first report of a fossilized cyst produced by a benthic dinoflagellate recovered from sub-recent sediments. PMID:26986270

  14. Arsenic determination in water supplies for human consumption of the province of Cartago, Costa Rica

    International Nuclear Information System (INIS)

    Scientific knowledge about hydroarsenicism must be disclosed in Latin America. The presence of arsenic has been detected in waters of Costa Rica that have been used for human consumption, in areas of risk; specifically in the province of Cartago, in the cantons of Oreamuno, Central, Paraiso and Alvarado. A quantification of reduced form trivalent arsenic was performed with the methodology of the 7062 Environmental Protection Agency of the United States, through volatile metal hydride generation by flame atomic absorption. The analyzed samples have determined that maintaining the maximum extent permitted by current legislation Costa Rican, 10μg/L. Research areas have corresponded to areas of high risk for its volcanic nature. The vast water supply of the cantons under study, with areas of relative protection circling recharge areas of springs, has caused the population to consume water source underground, but surface direct influence, less influence of volcanic rocks that are found at greater depths. (author)

  15. Evaluación de tres tipos de labranza en el cultivo de la papa (Solannum tuberosum)

    OpenAIRE

    Marvin Villalobos Araya; Isabel Guzmán Arias; Cristian Zúñiga Pereira

    2009-01-01

    El presente artículo revela los resultados obtenidos en un proyecto de investigación desarrollado para someter a evaluación la producción de papa utilizando diferentes tipos de labranza de suelo. Las localidades elegidas para la ejecución de la investigación son dos fincas ubicadas en la zona norte de Cartago, Costa Rica. Una de ellas se localiza en Llano Grande y la otra en Guarumos de Alvarado, cada una perteneciente a productores diferentes, quienes estuvieron a cargo del manejo del cultiv...

  16. Simulating the environment around planet-hosting stars - II. Stellar winds and inner astrospheres

    CERN Document Server

    Alvarado-Gómez, J D; Cohen, O; Drake, J J; Garraffo, C; Grunhut, J; Gombosi, T I

    2016-01-01

    We present the results of a comprehensive numerical simulation of the environment around three exoplanet-host stars (HD 1237, HD 22049, and HD 147513). Our simulations consider one of the latest models currently used for space weather studies in the Heliosphere. Large-scale magnetic field maps, recovered with two implementations of the tomographic technique of Zeeman-Doppler imaging, serve to drive steady-state solutions in each system. This paper contains the description of the stellar wind and inner astrosphere, while the coronal structure was previously discussed in Alvarado-G\\'omez et al. (2016). The analysis includes the magneto-hydrodynamical properties of the stellar wind, the associated mass and angular momentum loss rates, as well as the topology of the astrospheric current sheet in each system. A systematic comparison among the considered cases is performed, including two reference solar simulations covering activity minimum and maximum. For HD 1237, we investigate the interactions between the struc...

  17. C-V Calculations in CdS/CdTe Thin Films Solar Cells with a CdSxTe1-x Interlayer

    Directory of Open Access Journals (Sweden)

    A. Gonzalez-Cisneros

    2013-01-01

    Full Text Available In CdS/CdTe solar cells, chemical interdiffusion at the interface gives rise to the formation of an interlayer of the ternary compound CdSxCdTe1-x. In this work, we evaluate the effects of this interlayer in CdS/CdTe photovoltaic cells in order to improve theoretical results describing experimental C-V (capacitance versus voltage characteristics. We extended our previous theoretical methodology developed on the basis of three cardinal equations (Castillo-Alvarado et al., 2010. The present results provide a better fit to experimental data obtained from CdS/CdTe solar cells grown in our laboratory by the chemical bath deposition (for CdS film and the close-spaced vapor transport (for CdTe film techniques.

  18. El esclavo libre: más que un libro The free slave: more than a book

    Directory of Open Access Journals (Sweden)

    Carlos Abarca Barrantes

    2005-03-01

    Full Text Available Este ensayo investigativo nace después de la lectura de El Esclavo Libre, que tras casi medio siglo de profesión médica abnegada, el Dr. Alfonso Acosta Guzmán escribe para aconsejar a los futuros médicos sobre las exigencias de esta profesión, usando como metáfora de libertad la esclavitud de aquel que su pasión está al servicio de la salud de los demás. En él brinda merecido reconocimiento a su maestro médico forense, el Dr. Joaquín Zeledón Alvarado y el libro nos conduce a fuentes de información primaria como el Dr. Manuel Zeledón Pérez y la Licenciada Alicia Bogarín Parra, quienes nos enriquecerán con archivos fotográficos y bibliográficos importantísimos.This investigative essay was born from the reading of the book El Esclavo Libre, in which Dr Acosta Guzmán, after a half of century in this abnegate profession decided to advice new doctors using for this purpose aslike a metaphor of freedom the slavery of those who love with passion living to serve the health of the others. In this book he brings important recognition to one of his masters Dr. Joaquin Zeledón Alvarado, it connect us with a primary source of information, Dr. Manuel Zeledón and Lic. Alicia Bogarín, who give us enriched photographic and bibliographic files, very important to us.

  19. EXPERIENCIAS DE CORDILLERA, ECOS DE FRÍO: RELATOS CRUZADOS ENTRE CHILE Y QUITO EN EL SIGLO XVI

    Directory of Open Access Journals (Sweden)

    Alejandra Vega

    2011-11-01

    Full Text Available La narración de la secuencia de la conquista del Perú nos enfrenta con la fijación de dos episodios diferentes aunque articulados: la jornada a Quito de Pedro de Alvarado en 1534 y la expedición a Chile de Diego de Almagro, entre 1535 y 1536, que incluyen, ambas, una travesía cordillerana. El presente artículo discute los ecos que pueden rastrearse de los relatos acerca de estas expediciones en un conjunto de obras redactadas en torno a 1550 (Gonzalo Fernández de Oviedo, Francisco López de Gómara, Pedro Cieza de León y Agustín de Zárate. A partir de convergencias y diferencias inesperadas en estos textos, se discute la importancia de la circulación oral de historias entre los conquistadores del Perú. Se plantea que la práctica social de la conversación oral permitió fijar, además de estas historias, una temprana conceptualización cristiana de los límites del Tawantinsuyu. En ella se concibió a Quito y Chile como las marcas fronterizas del espacio recién conquistado, permitiendo que ambos territorios se superpusieran al caracterizarse a partir a un mismo conjunto de imágenes sobre la experiencia de la cordillera.In the Hispanic narrative of the conquest of Peru, we can identify two different yet related episodes: Pedro de Alvarado's journey to Quito in 1534 and the expedition to Chile commanded by Diego de Almagro in 1535-1536. This article discusses the echoes than can be pinpointed in the accounts of both experiences in a corpus of texts written or printed around 1550 (Gonzalo Fernández de Oviedo, Francisco López de Gómara, Pedro Cieza de León and Agustín de Zárate. By tracing unexpected similarities and differences, this proposal discusses the importance of oral circulation of histories amongst Peruvian conquistadors. The features of conversation, as a social practice, allowed the register ofan early Christian conceptualization of the Tawantinsuyu territory. Here Quito and Chile became frontier marks of the

  20. Magnitud y Tendencia del Suicidio en los Cantones de Costa Rica: 1980 - 1994

    Directory of Open Access Journals (Sweden)

    Damaris Granados Bloise

    1998-07-01

    Full Text Available En dos anteriores entregas de este estudio, la primera publicada en el número anterior de esta Revista (1 y la segunda en este mismo número, se analizó, para Costa Rica como un todo y por provincias, respectivamente, la magnitud, estructura por edad y sexo, y tendencia del suicidio en el período 1980-94. En esta tercera entrega se presentan los resultados por cantones. (2 (3 (4. En la totalidad de los quince años que abarca el período 1980-94, se registraron en Costa Rica 2.015 muertes por suicidio, siendo la tasa promedio anual de mortalidad por esa causa, para el país, de 4.8 defunciones por cada 100.000 habitantes. En orden de magnitud descendente, son cantones de la región de Los Santos, Provincia de San José, los que ocupan los tres primeros lugares: Dota (13.4, Tarrazú (12.1 y León Cortés (10.9; junto con Alvarado (10.4 en Cartago, sobrepasan los 10 suicidios promedio anual por cada 100.000 habitantes.

  1. Predicting Spanish–English Bilingual Children’s Language Abilities

    Science.gov (United States)

    Hammer, Carol Scheffner; Komaroff, Eugene; Rodriguez, Barbara L.; Lopez, Lisa M.; Scarpino, Shelley E.; Goldstein, Brian

    2012-01-01

    Purpose In this study, the authors investigated factors that affect bilingual children’s vocabulary and story recall abilities in their 2 languages. Method Participants included 191 Latino families and their children, who averaged 59 months of age. Data on parental characteristics and children’s exposure to and usage of Spanish and English were collected. The authors assessed children’s Spanish and English vocabulary and story recall abilities using subtests of the Woodcock–Muñoz Language Survey—Revised (Woodcock, Muñoz-Sandoval, Ruef, & Alvarado, 2005). Results Sizeable percentages of variation in children’s English (R2 = .61) and Spanish (R2 = .55) vocabulary scores were explained by children’s exposure to, and usage of, each language and maternal characteristics. Similarly, variations in children’s story recall scores in English (R2 = .38) and Spanish (R2 = .19) were also explained by the factors considered in this investigation. However, the authors found that different sets of factors in each category affected children’s vocabulary and story recall abilities in each language. Conclusions Children’s exposure to and usage of their two languages as well as maternal characteristics play significant roles in bilingual individuals’ language development. The results highlight the importance of gathering detailed sociolinguistic information about bilingual children when these children are involved in research and when they enter the educational system. PMID:22337497

  2. Evaluación ambiental del humedal “La Moya” de Ayaviri

    Directory of Open Access Journals (Sweden)

    Calle Charaja, Leoncio (MVZ. Jr.

    2007-04-01

    Full Text Available Está compuesta por estos 7 trabajos y autores:• Biodiversidad de plantas silvestres en dos zonas(húmeda y seca de la Moya de Ayaviri. Por CalleCharaja, Leoncio (MVZ. Jr. Tiahuanaco No 265 Puno- Perú Mail: calle_leo@yahoo.com;calle_leo@hotmail.com; calle@peru.com; fono: 0051 051 9779133• Determinación de biomasa de materia verde en el humedal “La Moya”Por Ayaviri . Yujra Pampa, Freddy Lot (MVZ fredylot@hotmail.com• Capacidad de Carga Sostenible para ganado en el humedal “La Moya”.Quisocala Carita, Valentín (MVZ vquisocala@hotmail.com• Evaluación de indicadores ambientales y sociales en el humedal “LaMoya”. Por Alvarado Valdez, Victor (Ing° Economista.victormancito@yahoo.es• Impactos ambientales socioeconómicos del humedal “La Moya”. PorChávez Fuentes, Miguel J. (MVZ mchavezf@hotmail.com• Evaluación de la importancia de aves silvestres del humedal “LaMoya”. Por Marcavillaca Chevarria, Marco, A. (MVZmarma@hotmail.com• Contaminación de la “Moya” Ayaviri, por personas que lavan ropa. PorAyma Flores, Wilbur Rubén (MVZ aymawr@hotmail.com

  3. Las Migraciones en el Proceso de Integracion de las Americas: Seminario Internacional (Migration in the Integration Process in the Americas: International Seminar). Conference report.

    Science.gov (United States)

    Berglund, S

    1993-01-01

    This conference report of the Centro de Estudios Migratorios Latinoamericanos and the Center for Migration Studies pertains to meetings held in August 1992. Summary information on migration movements in Latin America is presented by region and subject. The topic of integration in the Americas was presented by Mr. Lelio Marmora. Other topics and presenters include the new Colombian Migration Policy (Mr. Carlos Adolfo Arenas), the integration policies in Central America (Mr. Pilar Norza of Costa Rica, Raimundo Alvarado of El Salvador, and Luis Armando Gusman of Nicaragua), the Andean Pact agreements (representatives of each country), US immigration policy (Charles B. Keely), the Mexican integration with Latin America and immigration to the US (Jorge Bustamante), migration to Bolivia and Argentina and Chile, and transnationalism in the Caribbean (Professor Andre Corten). Migration policy needs to be tailored specifically to the situation in Latin America, and greater attention needs to be devoted to labor migrants' rights and working conditions. There are still fundamental differences among countries in policies regarding the free circulation of persons across borders. There is a division among those who support migration and those who are realists. National sovereignty issues are solvable because of a common national past and a relatively homogenous population. Another opinion is that Latin America is more diverse than commonly recognized. Capital is protected more in international agreements than is migrant labor. Regional integration for the US does mean immigration from Mexico. The US sees Mexican migration as a policy problem, and Mexico sees migration as a labor opportunity. PMID:12346329

  4. Snap-off in constricted capillary with elastic interface

    Science.gov (United States)

    Hoyer, P.; Alvarado, V.; Carvalho, M. S.

    2016-01-01

    Snap-off of bubbles and drops in constricted capillaries occurs in many different situations, from bio-fluid to multiphase flow in porous media. The breakup process has been extensively analyzed both by theory and experiments, but most work has been limited to pure interfaces, at which the surface stress is isotropic and fully defined by the interfacial tension and interface curvature. Complex interfaces may present viscous and elastic behavior leading to a complex stress state that may change the dynamics of the interface deformation and breakup. We extend the available asymptotic model based on lubrication approximation to include elastic interfacial stress. Drop breakup time is determined as a function of the capillary geometry and liquid properties, including the interfacial elastic modulus. Results show that the interfacial elasticity has a stabilizing effect by slowing down the growth of the liquid collar, leading to a larger break-up time. This stabilizing effect has been observed experimentally in different, but related flows [Alvarado et al., "Interfacial visco-elasticity of crude oil-brine: An alternative EOR mechanism in smart waterflooding," in SPE-169127 Improved Oil Recovery Symposium (Society of Petroleum Engineers, 2014)].

  5. Modelo Probit para la medición de la pobreza en Montería, Colombia

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    Alfredo R. Anaya Narváez

    2015-01-01

    Full Text Available La relación entre diferentes variables socioeconómicas y la pobreza monetaria en la ciudad de Montería en el año 2012 se puede estudiar adecuadamente siguiendo trabajos similares a los de Juan José Alvarado y Adriana Silva Arias y otros, a través de un análisis de regresión binomial, en el cual la variable dependiente [Hogar pobre] toma solo dos valores [1 en caso de que el hogar se encuentre en condición de pobreza monetaria y 0 en caso contrario]. Para corroborar lo anterior, en el presente trabajo se estimó un modelo Probit que pertenece a la clase de modelos de respuesta cualitativa, con información de corte transversal proveniente de encuestas tipo calidad de vida. Los resultados revelan las características de los hogares de la ciudad de Montería que tienen mayores probabilidades de encontrarse en situación de pobreza.

  6. Reseña histórica de las jornadas costarricenses de medicina legal

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    Jorge Aguilar Pérez

    2001-09-01

    Full Text Available En noviembre de 1986 se iniciaron la Jornadas de Medicina Legal, gracias al apoyo del Dr. Eduardo Vargas Alvarao y del Dr. Fernando Garzona Messeguer y por supuesto el empeño y empuje de Doña Felicia Montealegre, secretaria del Departamento de Medicina Legal. Desde su incio la actividad lleno las espectativas de los organizadores y los participantes. En 1993 se hizo un alto, en 1994 el Dr. Jorge Mario Roldán Retana les imprime un nuevo aire. Este segundo aire hoy nos hace sentirnos orgullosos al cumplir quince años de Jornadas.In november 1986, we started with the Seminary of Legal Medicine, with the support of the Doctors Eduardo Vargas Alvarado and Fernando Garzona Messeguer, also with the support of Mrs. Felicia Montealegre, secretary of the Legal Medicine Department. Since the beginning this activity filled the expectations of the organizers and participants. In 1993 we had a brief stop, in 1994 Doctor Jorge Mario Roldan Retana gave to this activity a new vision. This second chance makes us happy and proud today, as we reach 15 years of annual Seminars.

  7. Investigating the impact of land use and the potential for harmful algal blooms in a tropical lagoon of the Gulf of Mexico

    Science.gov (United States)

    Limoges, Audrey; de Vernal, Anne; Ruiz-Fernández, Ana-Carolina

    2015-12-01

    Palynological and geochemical analyses were carried out on a sediment core collected in the shallow Alvarado lagoon (Veracruz, Southwestern Gulf of Mexico) in order to evaluate the impact of the significant decline in the surrounding native coastal vegetation on phytoplankton assemblages. The sedimentary sequence encompasses the last millennium and provides information on pre-industrial phytoplankton assemblages. Results highlight a recent increase of freshwater-sourced organic matter relative to marine organic matter in line with reduced total concentrations of cyst-producing dinoflagellates. These changes appear to be synchronous to the extensive conversion of wetlands into agricultural areas, with consequences on the stability and water retention capacity of the soils bordering the lagoon system. The data also show that Polysphaeridium zoharyi, a cyst produced by the potentially toxic dinoflagellate Pyrodinium bahamense, is present in high abundance in the dinoflagellate population of the lagoon. Consequently, the modern cyst bank of P. bahamense in sediment has the potential to initiate harmful blooms since surface sediments are prone to resuspension events related to strong seasonal winds and human activities.

  8. Estratigrafía del Grupo Neuquén, Cretácico Superior de la Cuenca Neuquina (Argentina: nueva propuesta de ordenamiento litoestratigráfico Stratigraphy of the Neuquén Group, Upper Cretaceous of the Neuquén Basin (Argentina: new proposal for lithostratigraphic ordaining

    Directory of Open Access Journals (Sweden)

    Alberto C. Garrido

    2010-12-01

    Full Text Available El Grupo Neuquén conforma una sucesión de depósitos continentales de origen fluvial, eólico y lacustre somero, desarrollado en la Cuenca Neuquina entre el Cenomaniano Inferior y el Campaniano Medio (Cretácico Superior. Esta sucesión alcanza un espesor máximo de 1.200 m, encontrándose limitada en base y techo por las discordancias Patagonídica y Huantráiquica respectivamente. En este trabajo se proponen dos nuevas formaciones (Formación Los Bastos nom. nov. y Formación Sierra Barrosa, nom. nov. y los subgrupos fueron reconfigurados. Consecuentemente, el Grupo Neuquén queda compuesto litoestratigráficamente por tres subgrupos y nueve formaciones. El Subgrupo Río Limay comprende a las Fms. Candeleros y Huincul, representando a depósitos de canales de baja sinuosidad desarrolladas bajo un control tectónico y climático subordinado. El Subgrupo Río Neuquén comprende a las Fms. Cerro Lisandro, Portezuelo, Los Bastos, Sierra Barrosa y Plottier, conformando una sucesión alternante de unidades psamíticas y pelíticas de origen fluvial, desarrolladas principalmente bajo control climático. Finalmente el Subgrupo Río Colorado integrado por las Fms. Bajo de la Carpa y Anacleto, comprende a depósitos fluviales desarrollados bajo un nuevo control tectónico dominante. En los inicios de la depositación del Grupo Neuquén, la Dorsal de Huincul operaba como un alto estructural generando hacia el sur de la misma una pequeña cuenca de carácter endorreico correspondiente a la Subcuenca de Picún Leufú, esquema que se habría mantenido hasta fines de la depositación de la Fm. Candeleros. Durante el resto de la depositación de esta secuencia, el drenaje se habría mantenido sin mayores modificaciones hacia la vertiente pacífica a través de un colector central discurrente en sentido N-NO. Hacia finales de la depositación del Grupo Neuquén se produce la inversión de la pendiente regional de la cuenca, posibilitando el ingreso del Oc

  9. "El equipo de la ciudad": Las narrativas de cohesión en el fútbol marplatense

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    Gastón Julián Gil

    2003-12-01

    Full Text Available En este trabajo se analiza una narrativa particular que se ha impuesto en el fútbol marplatense, dirigida a "inventar" un nuevo referente de identidad futbolística local, detrás de la consigna de "el equipo de la ciudad". Esta narrativa de cohesión fue impuesta por distintos agentes del campo futbolístico que intentaron construir un referente de identidad que encarnara metonímicamente la identidad deportiva de Mar del Plata. En distintas épocas y en grado diverso, periodistas, dirigentes, políticos, hinchas y jugadores han insistido en la idea de formar un equipo que resuma la identidad de la ciudad, revirtiendo los mecanismos de fisión generados por la proliferación de más de 30 clubes, la mayoría de ellos inmersos en fuertes rivalidades A través del análisis de dos proyectos empresariales que involucraron a dos equipos distintos de la ciudad (Alvarado y Aldosivi, se ponen en escena las divergencias que surgieron entre esas voluntades empresariales - concebidas como propuestas racionales y modernizadoras- y aquellos que eran destinatarios de las propuestas (los hinchas. Estos últimos actores jamás fueron pensados como partes integrantes en la cuestión, por los que se renunció desde un principio a la búsqueda de eventuales discontinuidades entre las racionalidades de los distintos actores involucrados.This paper presents a recent football narrative that has been imposed in Mar del Plata. It is directed at "inventing" a new referent for local football identity, behind the slogan of "the city team". This narrative of cohesion was imposed by different agents in the field of football who have tried to construct a new symbol of identity that would express the sports identity of Mar del Plata. Journalists, managers, politicians, supporters and players have insisted in the idea of forming a team which could crystallise the identity of the city, reversing the mechanisms of fission generated by the existence of more than 30 clubs with

  10. Role of the biomass burning emission on the total peroxy nitrates measured during the BORTAS campaign

    Science.gov (United States)

    Aruffo, Eleonora; Biancofiore, Fabio; Di Carlo, Piero; Busilacchio, Marcella; Verdecchia, Marco; Tomassetti, Barbara; Dari Salisburgo, Cesare; Giammaria, Franco; Bauguitte, Stephane; Lee, James; Moller, Sarah; Hopkins, James; Punjabi, Shalini; Andrews, Stephen; Lewis, Alistair C.; Palmer, Paul P.; Hyer, Edward; Breton, Michael L.; Percival, Carl

    2016-04-01

    During the BORTAS (BOReal forest fires on Tropospheric oxidants over the Atlantic using Aircraft and Satellites) campaign, carried out in the Eastern Canada during the summer 2011, the total peroxy nitrates (∑PNs) concentrations have been measured using the TD-LIF (Thermal Dissociation - Laser Induced Fluorescence) instrument (Di Carlo et al., 2013) developed at the University of L'Aquila (Italy). In our analysis, we observed a strong correlation between the CO, a well-known BB tracer, and the ∑PNs suggesting the possibility to use also the ∑PNs as BB tracer for the identification of a BB plume. Moreover, Alvarado et al. (2010) demonstrated that, in the first few hours after the emissions by fires, the 40% of the NOx emitted is converted into PAN, confirming that the ∑PNs are strongly produced by BB. We used different methods for the identification of a BB plume using the ∑PNs as a tracer. Moreover, we will show the comparison between our results and the results obtained using other methods available in literature. We will illustrate in detail two case studies in which the ∑PNs and the hydrogen cyanide (HCN) measurements help for a more specific identification of a BB plume. Our results have been confirmed using an artificial neural network model (Biancofiore et al., 2015). References Alvarado, M. J., Logan, J. A., Mao, J., Apel E, Riemer, D., Blake, D., Cohen, R. C., Min, K.-E., Perring, A. E., Browne, E.C., Wooldridge, P. J., Diskin, G. S., Sachse, G.W., Fuelberg, H., Sessions, W. R., Harrigan, D. L., Huey, G., Liao, J., Case-Hanks, A., Jimenez, J. L., Cubison, M. J., Vay, S. A., Weinheimer, A. J., Knapp, D. J., Montzka, D. D., Flocke, F. M., Pollack, I. B., Wennberg, P. O., Kurten, A., Crounse, J., St. Clair, J. M., Wisthaler, A., Mikoviny, T., Yantosca, R. M., Carouge, C. C., and Le Sager, P.: Nitrogen oxides and PAN in plumes from boreal fires during ARCTAS-B and their impact on ozone: an integrated analysis of aircraft and satellite observations

  11. La percepción social del subsidio a la tenencia vehicular: caso Sinaloa 2014

    Directory of Open Access Journals (Sweden)

    Julio César Rodríguez Valdez

    2016-01-01

    Full Text Available Uno de los problemas de los gobiernos estatales es la escasez de recursos para operar la vida económica; la solución, entre otros asuntos de fondo, es elevar la capacidad recaudatoria de una manera justa y equitativa sin lesionar los ingresos de los contribuyentes. Este estudio mide el grado de satisfacción o insatisfacción del Acuerdo mediante el cual se otorgan facilidades para el pago del impuesto sobre la tenencia o uso de vehículos en el estado de Sinaloa con relación a sus reglas de operación, dado a que es aprovechado por un número finito de contribuyentes, quedando excluido otro tanto. El estudio se abordó desde la perspectiva de fenómeno social con enfoque metodológico mixto. Por una parte, se aplicó cuestionario estructurado con escala de Likert y se procesó con estadística descriptiva e inferencial. Se analiza la variable percepción social, se sometió a prueba la hipótesis planteada y se concluyó que el programa social muestra debilidades, ante todo de información oficial. Por otra parte, a través de la entrevista flexible y abierta, se obtuvo opinión de informantes de las administraciones de recaudación de las principales ciudades del estado: Culiacán, Los Mochis, Mazatlán, Salvador Alvarado y Guasave, emergiendo una variable no prevista: falta de cultura tributaria de la ciudadanía para el cumplimento de sus obligaciones.

  12. Evaluación de tres tipos de labranza en el cultivo de la papa (Solannum tuberosum

    Directory of Open Access Journals (Sweden)

    Marvin Villalobos Araya

    2009-01-01

    Full Text Available El presente artículo revela los resultados obtenidos en un proyecto de investigación desarrollado para someter a evaluación la producción de papa utilizando diferentes tipos de labranza de suelo. Las localidades elegidas para la ejecución de la investigación son dos fincas ubicadas en la zona norte de Cartago, Costa Rica. Una de ellas se localiza en Llano Grande y la otra en Guarumos de Alvarado, cada una perteneciente a productores diferentes, quienes estuvieron a cargo del manejo del cultivo durante todo el ciclo. Para analizar la producción, se utilizó un diseño experimental en bloques completos al azar, con tres tratamientos correspondientes al método de labranza y tres repeticiones para cada uno de ellos. La unidad experimental estuvo constituida por una subparcela de 5 m x 5 m, ubicada en el centro de cada parcela de tratamiento. Se midió rendimiento en la producción de papa, y se obtuvo mayores valores en las parcelas preparadas con el implemento llamado “palín” o azada mecánica, presentándose en algunos casos diferencias significativas entre tratamientos al 5%. Se determinó también la velocidad de infiltración para cada método de preparación del suelo, y se obtuvo mayores valores en las zonas preparadas con el “palín” o azada mecánica.

  13. The sugar industry in Peru

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    Klaren, Peter F.

    2005-04-01

    Full Text Available Since the early Colonial times sugar production has been a key sector in the Peruvian export economy. This article analyzes its evolution as from the beginning of its modern phase by mid 19th Century, its consolidation in the Northern coastal region, and its concentration in scale-economy plants. The prosperity of this type of production contributed to the formation of both an oligarchy which governed the country until 1968, and the populist party (APRA and its electoral basis (the so-called «Aprista North». In the sixties Velasco Alvarado’s military revolution nationalized the sugar industry, which underwent structural changes leading to a serious crisis in the eighties that has not been overcome up-todate.

    La producción de azúcar ha constituido un importante sector en la economía exportadora del Perú desde el período colonial temprano. Este artículo analiza su evolución, sobre todo tras el inicio de su fase moderna, fechada a partir de mediados del siglo XIX, cuando se modernizó, se consolidó en la región costera septentrional y se concentró en fábricas que operaban con economías de escala. Su prosperidad, contribuyó, además, a la formación de una oligarquía que gobernó el país hasta 1968 y del partido populista, APRA, y su base electoral (el llamado «sólido Norte aprista». La revolución militar de Velasco Alvarado nacionalizó la industria en la década de 1960 y los cambios estructurales que sufrió posteriormente le condujeron a una grave crisis en los años ochenta que aún no ha superado.

  14. Comparative analysis between single incision and conventional laparoscopic appendectomy for acute appendicitis

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    Sreeram Sateesh

    2014-08-01

    Full Text Available Appendicitis is an acute inflammatory condition of appendix. Since it is a surgical emergency, needs early diagnosis and treatment strategies which include clinical examination, followed by Laboratory investigations and Imaging studies. The scoring systems like Alvarado score have been considered for better diagnosis. In most studies surgery has been reported as the best modality of treatment. Several studies clearly mentioned the impact of various surgical procedures which include Open appendectomy (OA, Conventional laparoscopic appendectomy (CLA and Single incision laparoscopic appendectomy (SILA. Hence, the present study is carried in an aim to assess and compare the merits and demerits between the surgical procedures Like SILA and CLA. The patients were randomly selected from the surgical department (NMCH who presented with acute pain abdomen and diagnosed as acute appendicitis. 50 patients were enrolled in the study after fulfilling the inclusion and exclusion criteria. The various demographic variables have been studied between the surgical procedures to demonstrate their impact, which include wound infection rate, pain scores at 24 and 48hrs, the amount of time period for surgery in minutes, patient satisfaction scores and post-operative stay tenure at the hospital in days. The laparoscopic hand instruments used in both techniques are similar, except covidien port which was reused in SILA, following gas sterilization to reduce the cost. Findings reveal that the pain score was significantly lower in SILA than CLA group. The procedure time is comparatively more in SILA than CLA group. Patients had significant satisfaction score in SILA measured at 6 weeks after appendectomy. However the post operative stay, wound infection rate was almost similar in both the groups. There was no conversion to open Appendectomy performed in either of these groups. Results also clearly suggest that the SILA procedure is the safe, alternative and effective

  15. Book Reviews

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    Redactie KITLV

    1984-01-01

    Full Text Available -Stanley L. Engerman, Gordon K. Lewis, Main currents in Caribbean thought: the historical evolution of Caribbean society in its ideological aspects, 1492-1900. Baltimore and London: The Johns Hopkins University Press, Johns Hopkins Studies in Atlantic History and Culture, 1983. x + 375 pp. -David William Cohen, Eric R. Wolf, Europe and the people without history. Berkeley and Los Angeles: University of California Press, 1982. xi + 503 pp. -Samuel Martinez-Maza, William F. Stinner ,Return migration and remittances: developing a Caribbean perspective. Washington D.C.: Research Institute on Immigration and Ethnic Studies, Smithsonian Institution, RIIES Occasional Papers No. 3, 1982. lxvii + 322 pp., Klaus de Albuquerque, Roy S. Bryce-Laporte (eds -Alfrieta Parks Monagan, Filomena Chioma Steady, The black woman cross-culturally. Cambridge MA: Schenkman, 1981. ix + 645 pp. -Sally Price, William Ferris, Afro-American folk art and crafts. Boston: G.K. Hall and Co., 1983. 436 pp. -Lawrence E. Fisher, Roger D. Abrahams, The man-of-words in the West Indies: performance and the emergence of creole culture in the West Indies. Baltimore: The Johns Hopkins University Press, Johns Hopkins Studies in Atlantic History and Culture, 1983. xxxi + 200 pp. -Erika Bourguignon, Stephen D. Glazier, Perspectives on Pentecostalism: case studies from the Caribbean and Latin America. Washington D.C.: University Press of America, 1980. viii + 197 pp. -Donald J. Waters, Marilyn Silverman, Rich people and rice: factional politics in rural Guyana. Leiden: E.J. Brill, Monographs and Theoretical Studies in Sociology and Anthropology, 1980. xii + 240 pp. -Bridget Brereton, Anthony de Verteuil, The years before. Trinidad: Inprint Caribbean, 1981. 309 pp. -Lisandro Perez, Louis A. Pérez Jr., Historiography in the Revolution: a bibliography of Cuban scholarship, 1959-1979. New York: Garland Publishing, 1982. xxiv + 318 pp. -Rebecca J. Scott, Juan Francisco Manzano, The life and

  16. Calidad de vida familiar y bienestar subjetivo en jóvenes con discapacidad intelectual de un establecimiento con educación especial y laboral de la Ciudad de Talca

    Directory of Open Access Journals (Sweden)

    YOHANINA ANDREA MUÑOZ VALDÉS

    2012-01-01

    Full Text Available El estudio que se presenta tuvo como objeti vo identificar la relación entre la Calidad de Vi - da Familiar, Funcionamiento Familiar y Bienestar Subjetivo junto con los factores de la calidad de vida familiar en relación al bienestar subjetivo en jóvenes con discapacidad intelectual, alum nos de un establecimiento de educación especial y laboral de la ciudad de Talca (Chile. La muestra fue dividida en dos grupos: uno de ellos estuvo integrado por 53 alumnos de 16 a 24 años de edad, del citado establecimiento que fueron diagnosticados con discapacidad intelectual: el 52.8% de ellos manifiesta discapacidad intelectual como único predictor de su condición, mientras que el 47.2% restante corresponde a comorbilidad de ésta con otros tipos de discapacidad asociados. Los niveles de discapacidad van desde el leve (37.7%, seguido por el moderado (50.9% y finalmente el severo y el profundo (3.8%. El otro grupo estuvo conformado por 53 apoderados, padres o tutores del mismo establecimiento educacional. Con la finalidad de medir las variables de estudio se administraron cuatro instrumentos: (1 la Escala de Calidad de Vida Familiar (Verdugo, Sainz & Rodríguez, 2009, (2 la versión traducida al español (Bellon, Delgado, Luna del Castillo & Lardelli, 1996 del Family Functioning Questionnaire (Smilkstein, Ashworth & Montano, 1982, (3 la adaptación y validación de Moyano y Ramos Alvarado (2007 de la Satisfaction with the Life Scale (Diener, Emmons, Larden & Griffin y (4 la versión chilena de Moyano-Díaz & Ramos (2007 de la Subjective Happiness Scale (Lyubomirsky & Lepper, 1999. Para realizar el estudio se utilizó una metodología descriptiva y correlacional de corte transversal a fin de establecer relaciones de con comitancia entre las variables. Los resultados principales demostraron una relación significativa entre importancia de la calidad de vida familiar y satisfacción de la calidad de vida familiar (r = .402; p < .01; entre felicidad

  17. Seismic microzoning projects and their implementation in Venezuela

    Science.gov (United States)

    Schmitz, M.; Cano, V.; Olbrich, F.; Vallee, M.; Morales, C.; Arreaza, A.; Mendes, K.; Klarica, S.; Alvarez Gomez, J.; Aray, J.; Vielma, J.; Pombo, A.; Diaz, J.; Grupo de trabajo

    2013-05-01

    analysis. Further members of the "Grupo de trabajo: Investigaciones aplicadas a la gestion integral del riesgo en espacios urbanos" are: Oscar Andrés López, Milgreya Cerrada, Rafael Torres, Oscar Ramírez, Elieser Sanzonetti, José Heredia, Jaime Avendaño, Fernando Mazuera, Luis Molina, Alexi Suárez, Víctor Rocabado, Mónica Paolini, Luis Yegres, Leonardo Alvarado, Herbert Rendón, Luz Rodríguez, Jorge González.

  18. Evolución del e-gobierno en la Alcaldía del Municipio Naguanagua, estado Carabobo: período 2004-2014

    Directory of Open Access Journals (Sweden)

    Lubiza Osio

    2015-08-01

    Full Text Available El presente artículo, tiene como objetivo realizar una comparación evolutiva, sobre los avances del gobierno electrónico en el área específica de los servicios disponibles a través de la página Web de la Alcaldía de Naguanagua, estado Carabobo, durante el periodo comprendido entre el año 2004 y el año 2014. Su fundamentación se basó en el análisis de datos provenientes de dos investigaciones de las cuales, se precisó el avance sobre el e-gobierno en dos momentos: año 2004 y 2007, en el contexto de la referida Alcaldía. Estas investigaciones, fueron realizadas por Alvarado, Meza y Peroza (2005 y Gómez (2007. En función de los resultados previamente obtenidos para el año 2014, se procedió a realizar una evaluación, con el fin de determinar el posicionamiento alcanzado mediante el e-gobierno con respecto al contexto que administra esta institución, a través de su página web. Se utilizó la metodología desarrollada por Esteves (2005, la cual permitió medir los atributos presentes en las páginas web de las Alcaldías y así mostrar el posicionamiento evolutivo que ha tenido el e-gobierno, a través de los e-servicios ofrecidos en la página web de la Alcaldía de Naguanagua, en los tres periodos referidos: 2004, 2007 y 2014. Como resultado, se exponen las ventajas y desventajas de la página web con respecto a los servicios que provee. Al final se evidencia los resultados y las conclusiones sobre el objeto de estudio

  19. An Effective Family Skills-based Intervention for the Prevention of Health Problems in Children of Alcohol and Drug-Abusing Parents

    Directory of Open Access Journals (Sweden)

    Karol l. Kumpfer

    2013-01-01

    Full Text Available Introduction. There is a need forwide-scale dissemination of effective family-focused skills trainingprograms for the prevention of multiple developmental problems and later substance misuse amonghigh-risk children. Independent reviews have found the author’s Strengthening Families Program (SFP tobe the most effective substance abuse prevention intervention. Cultural adaptations have resulted in successful SFP outcomes in many countries, including in Spain as detailed in the Orte article. This article reviews 30 year history of implementation and outcomes of SFP in different cultures with cultural adaptations. Methods: The SEM-tested Social Ecology Model (Kumpfer, Alvarado, &Whiteside, 2003 is presented and reveals that family factors (bonding, supervision, and communication are the most protective of later substanceuse.Hence, this causal theory served as the etiological theory behind the design of the 14-session SFP.Social cognitive behavior theory (Bandura, 1989 is the intervention theory. The Strengthening Families Program(SFP was the first family skills training program developed and found effective in a randomized control trial (RCT to improve outcomes for children of dug abusers.Many countries requested to replicate SFP; hence, staff training systems were developed and a cultural adaptation process. Results: Eight RCTs, four conducted by independent research teams, and hundreds of quasi-experimental studies in different countrieshave demonstrated SFP’s effectiveness in reducing substance use in adolescents with up to 10-yearfollow-ups. Comparative effectiveness reviews including ones using statistical meta-analysis by theOxford University Cochrane Collaboration Reviews, found SFP to be the most effective alcohol and drug prevention program (Foxcroft, et al., 2003. A cost-benefit analysis by Miller and Hendrie (2008 found SFP prevented the highest percentage of youth from using alcohol and drugs. Cultural adaptation is a mandated

  20. Geophysical Modeling of Tectonostratigraphic Terrane Boundaries and Crustal Structure Across a Pacific Ocean-Gulf of Mexico Transect, Southern Mexico

    Science.gov (United States)

    Urrutia-Fucugauchi, J.; Flores-Ruiz, J. H.; Spranger, M.

    2006-12-01

    Geophysical models of terrane boundaries and lithospheric structure beneath southern Mexico derived from gravity and aeromagnetic surveys are presented. The transect crosses southern Mexico from the active Pacific margin to the passive Gulf of Mexico margin, across four distinct terranes (Xolapa, Oaxaca, Juarez and Maya) with Precambrian, Paleozoic and Mesozoic basements and contrasting tectonostratigraphic records. The crust/mantle boundary displays a smooth large amplitude variation along the transect from Puerto Escondido at the Pacific margin to Los Tuxtlas-Alvarado at the Gulf of Mexico, roughly between 28 km and 44 km deep. Crustal thickness variations correspond well with inferred terrane distribution and major surface discontinuities. Suture zones are complex as a result of the kinematics of terrane accretion, contrasting crustal rheological properties, shallow level detachments, post-accretion deformation, thermal conditions and characteristics of relative terrane/plate motions. Pre-suturing characteristics of terranes including crustal structure are difficult to document because of deformation resulting from suturing and any subsequent post-accretion processes. In a simplified way, gravity anomalies from the Pacific margin to the Gulf of Mexico show: large positive 50 mgal anomaly above the continental slope units and the intrusive and metamorphic rocks of the Xolapa complex, then anomalies increasingly negative (with minimum values of -180 mgal over the Acatlan and Oaxaca metamorphics. The Juchatengo mylonitic zone is characterized by a gradient change, while minimum gravity values approximately coincide with the wide mylonitic zone north of Oaxaca city. The Juarez terrane and the region over the Sierra de Juarez is characterized by positive gradient. Finally, the Gulf coastal plain is marked by a positive anomaly in the order of -40 mgal. Geophysical models are combined with the seismic models of the Geolimex profile and used to evaluate the crustal

  1. Reseñas de Libros

    Directory of Open Access Journals (Sweden)

    David Oviedo Silva

    2009-12-01

    Full Text Available Alvarado López, Guillermo, El poder desde el espíritu: la visión política del Pentecostalismo en el México contemporáneo. Buenos Aires, Libros de la Araucaria, 2006, 149 pp.Páginas 193-196David Oviedo SilvaCandela Sevila, Virgilio F., Del franquismo a la democracia. La formación de la UCD en la provincia de Alicante. Alicante, Instituto de Cultura Juan Gil-Albert, 2007, 336 pp.Páginas 196-198Mónica Fernández AmadorCardenal, Ernesto, Vida perdida: memorias 1. México, Fondo de Cultura Económico, 2003, 446 pp.Páginas 198-199Gonzalo Ruiz BidónChaput, Marie-Claude (ed., « De l’anarchisme aux courants alternatifs (XIX-XXIè siècles », monográfico de Regards, 9 (2007, Université de Paris X-Nanterre, 460 pp.Páginas 199-201Iván López CabelloDíaz Rangel, Eleazar, La prensa venezolana en el siglo XX. Caracas, Ediciones B, 2007, 218 pp.Páginas 201-203Carmen Rodríguez González“El nuevo orden mundial y el mundo islámico”, dossier de Ayer. Revista de Historia Contemporánea, 65 (2007, 313 pp.Páginas 203-205Antonio Javier Martín CastellanosLewis Gaddis, John, El paisaje de la historia. Cómo los historiadores representan el pasado. Barcelona, Anagrama, 2004, 244 pp.Páginas 205-207David Molina RabadánMalgat, Gérard, Max Aub y Francia o la esperanza traicionada. Sevilla, Renacimiento, 2007, 416 pp.Páginas 207-209José Luis Gutiérrez MolinaMearsheimer, John; Walt, Stephen, El lobby israelí. Madrid, Taurus, 2007, 616 pp.Páginas 209-211Javier Lión BustilloMoradiellos García, Enrique, 1936: Los mitos de la Guerra Civil. Barcelona, Península, 2004, 249 pp.Páginas 211-212David Molina RabadánPrieto Borrego, Lucía; Barranquero Texeira, Encarnación, Población y Guerra Civil en Málaga: Caída, éxodo y refugio. Málaga, Servicio de Publicaciones-Centro de Ediciones de la Diputación de Málaga, 2007, 348 pp.Páginas 212-214Joaquín Piñeiro BlancaQuirosa-Cheyrouze y Muñoz, Rafael (coord., Historia de la Transición en

  2. Climatic Action Plan Project for the state of Veracruz (Mexico)

    Science.gov (United States)

    Tejeda, A.; Ochoa, C.

    2007-05-01

    power stations (Tuxpan and Laguna Verde) will be affected directly if they're still operating within half century. The lagoons of Alvarado and Tamiahua will be part of the sea. In heavy numbers, more than six hundred kilometers of beaches will be lost (and, of course, good part of the tourist infrastructure including Costa Esmeralda and Veracruz Boca del Río), along with more than two hundred kilometers of routes and around twenty kilometers of seaports. More than three thousand urban hectares will become floodable as two hundred thousand fields and agriculture. Because of all this, a study is proposed that considers a revision of the state's variability and climatic change in Veracruz; an inventory of GEI emissions and its respective scenes; data bases with quality control and analysis of climatic variability; regional climatic scenes (years 2025, 2050 and 2075), and scenes of vulnerability and adaptation measures, mitigation in coast affectations and coastal infrastructure, water availability, biodiversity, agriculture, human establishments and energy consumption by air conditioning of houses. Approaches of the study will be discussed and advances during the first semester of the project will appear in this presentation.

  3. Ring-Enhancing Lesions in the Brain: A Diagnostic Dilemma

    Directory of Open Access Journals (Sweden)

    Guruprasada SHETTY

    2014-07-01

    lesions in epilepsy in India. The Journal of tropical medicine and hygiene. 1994;97(6:347-53. Epub 1994/12/01.Jain AP JR, Lathia T. Single Small Enhancing Computed Tomography Lesion: A Review. Journal of Indian Academy of Clinical Medicine. 2005;6(2:114-21.Gujar SK, Maheshwari S, Bjorkman-Burtscher I, Sundgren PC. Magnetic resonance spectroscopy. J Neuroophthalmol. 2005;25(3:217-26. Epub 2005/09/09.Pretell EJ MCJ, Garcia HH, Alvarado M, Bustos JA, Martinot C. Differential diagnosis between cerebral tuberculosis and neurocysticercosis by magnetic resonance spectroscopy. J Comput Assist Tomogr. 2005;29:112-4.Santy K, Nan P, Chantana Y, Laurent D, Nadal D, Richner B. The diagnosis of brain tuberculoma by (1H-magnetic resonance spectroscopy. Eur J Pediatr. 2011;170(3:379-87. Epub 2011/02/09.Gutch M, Jain N, Agrawal A, Modi A. MR spectroscopy in tuberculoma of brain. BMJ Case Rep. 2012;2012. Epub 2012/05/19.

  4. Apresentação

    Directory of Open Access Journals (Sweden)

    Os Editores

    2007-06-01

    Full Text Available Começamos este número 27 de Significação com um pequeno texto de Greimas, "Acerca do jogo", que é ainda pouco conhecido internacionalmente. Em tradução anotada e comentada por J. C. Portela, o texto analisa o uso que se faz da analogia do jogo de xadrez nas ciências da linguagem – F. de Saussure, L. Hjelmslev, L. Wittgenstein –,indo daí ao percurso do sujeito "jogador", as suas interações e as suas estratégias.Logo em seguida temos em artigo de Carlos Augusto Calil, o relato de uma parceria, em 1924, entre Blaise Cendrars e Oswald de Andrade com base num desejo comum de se tornarem cineastas-cavadores. Em meio a um projeto ambicioso de realização de um "filme de propaganda sobre o Brasil", o "belo poeta" francês teve a oportunidade de testemunhar a eclosão da Revolução de 1924, reprimida com violência pelo governo federal. A experiência marcou a sua imaginação e sepultou os planos de realizar um filme no país, baseado em episódios da história paulista.Em "Cinema e Política" Lisandro Nogueira nos fala da representação do jornalismo e do marketing político no cinema brasileiro dos anos 90. O filme Doces Poderes, de Lúcia Murat, tenta mostrar que o jornalismo perde seu papel de fonte primária de informação em favor da "notícia enquanto produto". Buscando diagnosticar as rápidas mudanças ocorridas no campo da comunicação nesse período, o artigo trata das fragilidades e limitações do cinema brasileiro de viés político.Em "Paradoxos pós-modernos na representação da modernidade e do modernismo" Solange Wajnman estuda os recursos expressivos da minissérie Um só Coração. Voltamos aqui aos anos 20 para discutir, nesta recente produção da Rede Globo, um conjunto de elementos visuais, tais como cenários, figurinos e jogo videográfico, que, ao percorrer a temática do moderno no Brasil e em São Paulo, configura uma concepção histórica da identidade paulistana de maneira paradoxal, própria ao

  5. Mercury in the atmospheric and coastal environments of Mexico.

    Science.gov (United States)

    Ruelas-Inzunza, Jorge; Delgado-Alvarez, Carolina; Frías-Espericueta, Martín; Páez-Osuna, Federico

    2013-01-01

    Alvarado lagoon (SE Mexico); those concentrations appear to be associated with river waters that became enriched with organic matter and suspended solids inthe brackish mixing zone.Regarding the Hg content in invertebrates, the use of bivalves (oysters and mussels)as biomonitors must be established along the coastal zones of Mexico, because some coastal lagoons have not been previously monitored. In addition, more research is needed to investigate shrimp farms that are associated with agricultural basins and receive effluents from several anthropogenic sources (e.g., mining activity and urban discharges). Hg residues in several vertebrate groups collected in Mexico have been studied.These include mammals, birds, reptiles, and fish. In elasmobranch species, the highest Hg concentration (27.2 flg g-1 dry wt) was found in the muscle of the smooth hammer head shark (Sphyrna zygaena). Teleost fish are the vertebrate group that has been most studied, with regard to Hg residue content; the highest value (5.67 11g g-1dry wt) was detected in the striped marlin (T. audax). Among reptiles, only marine turtles were studied; Hg levels found ranged from 0.795 in the liver to 0.0006flg g-1dry wt in the blood of L. olivacea. In birds, the highest Hg concentration (5.08 flg g-1dry wt) detected was in the liver of the olivaceous cormorant (P. olivaceous).Specimens from stranded marine mammals were also analyzed; levels of Hg ranged from 70.35 flg g-1 dry wt in the liver of stranded spinner dolphin (S. longirostris ), to0.145 flg g-1 dry wt in the muscle of gray whale (E. robustus). The presence of Hgin these marine animals is not thought to have caused the stranding of the animals.Other organisms like macroalgae and vestimentiferan tube worms were used to monitor the occurrence of Hg in the aquatic environment; levels were comparable to data reported on similar organisms from other areas of the world. Few investigation shave been carried out concerning the mercury content in human organs

  6. Book Reviews

    Directory of Open Access Journals (Sweden)

    Redactie KITLV

    2003-01-01

    L. Scarpaci, Jonathan Benjamin-Alvarado, Power to the people: Energy and the Cuban nuclear program. New York: Routledge, 2000. xiii + 178 pp. -Lynn M. Festa, Keith A. Sandiford, The cultural politics of sugar: Caribbean slavery and narratives of colonialism. Cambridge: Cambridge University Press, 2000. 221 pp. -Maria Christina Fumagalli, John Thieme, Derek Walcott. Manchester: Manchester University Press, 1999. xvii + 251 pp. -Laurence A. Breiner, Stewart Brown, All are involved: The art of Martin Carter. Leeds U.K.: Peepal Tree, 2000. 413 pp. -Mikael Parkvall, John Holm, An introduction to Pidgins and Creoles. Cambridge: Cambridge University Press, 2000. xxi + 282 pp.

  7. List of Participants

    Science.gov (United States)

    2011-08-01

    GonzalezBUAP, FCFM Lorenzo Díaz CruzBUAP Facultad de Ciencias Físico Matemáticas Luis Rey Díaz BarrónDivisión de Ciencias e Ingenierías Luis UrenaUniversidad de Guanajuato Magda LolaDept. of Physics, University of Patras, Greece Mahmoud WahbaEgyptian Center for Theoretical Physics, MTI Marcus S CohenNew Mexico State University Mario A Acero OrtegaICN - UNAM Mario E GomezUniversidad de Huelva Mark PipeUniversity of Sheffield Mauro NapsucialeDCI-UG Mirco CannoniUniversidad de Huelva Mónica Felipa Ramírez PalaciosUniversidad de Guadalajara Murli Manohar VermaLucknow university, India Nassim BozorgniaUCLA Octavio Obregón Octavio ValenzuelaIA-UNAM Oleg KamaevUniversity of Minnesota Osamu SetoHokkai-Gakuen University Pedro F González DíazIFF, CSIC, Serrano 121, 28006 Madrid, Spain Qaisar ShafiBartol Research Inst. and Delaware U. Raul Hennings-YeomansLos Alamos National Laboratory René Ángeles MartínezDepartamento de Fisica, del DCI de la Universidad de Guanajuato Reyna XoxocotziBUAP, FCFM Rishi Kumar TiwariGovt. Model Science College, Rewa (MP) INDIA Roberto A SussmanICN-UNAM Selim Gómez ÁvilaDCI-UG Sugai KenichiSaitama University Susana Valdez AlvaradoDCI-UG TVladimir - 2K CollaborationColorado State University Tonatiuh MatosCINVESTAV Valeriy DvoeglazovUniversidad de Zacatecas Vannia Gonzalez MaciasDCI-UG Vladimir Avila-ReeseInstituto de Astronomia, UNAM Wolfgang BietenholzINC, UNAM (Mexico) Yamanaka MasatoKyoto Sangyo University Yann MambriniLPT Orsay Yu-Feng ZhouInstitute of Theotretical Physics, Chinese Academy of Sciences, PR China Aaron HigueraDCI-UG Azarael Yebra PérezDCI-UG César Hernández AguayoDCI-UG Jaime Chagoya AlvarezDCI-UG Jonathan Rashid Rosique CampuzanoDCI-UG José Alfredo Soto ÁlvarezDCI-UG Juan Carlos De Haro SantosDCI-UG Luis Eduardo Medina MedranoDCI-UG Maria Fatima Rubio EspinozaDCI-UG Paulo Alberto Rodriguez HerreraDCI-UG Roberto Oziel Gutierrez CotaDCI-UG Rocha Moran Maria PaulinaDCI-UG Xareni Sanchez MonroyDCI-UG

  8. Monitoring the Dynamic of a Fluvial Channel after Lahar Disturbance: Huiloac Gorge (Popocatepetl Volcano, Mexico)

    Science.gov (United States)

    Andres, N.; Palacios, D.; Zamorano, J. J.; Tanarro, L. M.; Renschler, C.; Sanjosé, J. J.; Atkinson, A.

    2009-04-01

    Capra, L.; Poblete, M.A. and Alvarado, R. 2004. The 1997 and 2001 lahars of Popocatépetl volcano (Central Mexico): textural and sedimentological constraints on their origin and hazards. Journal of Volcanology and Geothermal Research, 131: 351-369. Gran, K. y Montgomery, D., 2005. Spatial and temporal patterns in fluvial recovery following volcanic eruptions: Channel response to basin-wide sediment loading at Mount Pinatubo, Philippines. GSA Bulletin, 117; 1-2: 195-211. Hayes, S.K., Montgomery, D.R. and Newhall, C.G., 2002, Fluvial sediment transport and deposition following the 1991 eruption of Mt. Pinatubo. Geomorphology. Vol. 45: 211-224. Major, J.J., Pierson, T.C., Dinehart, R.L. y Costa, J.E. 2000. Sediment yield following severe volcanic disturbance- A two-decade perspective from Mount St. Helens. Geology, 28, n° 9: 819-822. Major, J.J., 2003. Post-eruption hydrology and sediment transport in volcanic river systems, Water Resources IMPACT, 5(3): 10-15. Muñoz, E. 2007. Los lahares del Popocatépetl: tratamiento de la información para la prevención de catástrofes. (PhD thesis, Universidad Complutense de Madrid.) Palacios, D., 1995. Rockslide processes on the north slope of Popocatépetl Volcano, Mexico, Permafrost and Periglaciar Processes, 6: 345-356. Palacios, D., J.J. Zamorano and G. Parrilla. 1998. Proglacial debris flows in Popocatépetl North Face and their relation to 1995 eruption. Z. Geomorph. N. P., 42(3), 273-295 Palacios, D., J.J. Zamorano and A. Gómez. 2001. The impact of present lahars on the geomorphologic evolution of proglacial gorges: Popocatépetl, Mexico. Geomorphology, 37(1-2), 15-42.

  9. El control de la malaria en la costa Pacífica colombiana Malaria control in the Colombian Pacific Coast

    Directory of Open Access Journals (Sweden)

    Lyda Osorio

    2011-05-01

    ón.

    Actualmente se discute la legalidad de la provisión de servicios de salud por parte de esta red, por un lado, y por otro, la prestación del servicio en comunidades generalmente dispersas cuyo acceso geográfico es difícil. Con respecto al tratamiento, es claro que P. falciparum resistente a cloroquina ya está diseminado en la región y que la susceptibilidad del parásito a la amodiaquina también ha disminuido, aunque su uso combinado con sulfadoxina/pirimetamina es aún eficaz (10,11 (CIDEIM, datos no publicados. Con respecto a P. vivax, la cloroquina continúa siendo el tratamiento de primera línea en el país, pues se ha encontrado menos de 2% de fallas terapéuticas en estudios realizados en Tumaco y Buenaventura en la costa Pacífica y en Tarapacá en el Amazonas (CIDEIM, datos no publicados y ausencia de fallas con la combinación de cloroquina y primaquina en 210 personas de Turbo y El Bagre en Antioquia, como lo informan Carmona y colaboradores en el presente número de Biomédica (12. Por otra parte, se han detectado falencias en la provisión oportuna y suficiente de medicamentos, en las prácticas de prescripción y en la adherencia al tratamiento por parte de los pacientes (CIDEIM, datos no publicados, que deben solventarse cuanto antes.

    Una cobertura suficiente sólo se logra si los programas de control de la malaria cuentan con equipos relativamente grandes de trabajadores, lo que implica altos costos en mano de obra, y explicaría algunas de las fallas de dichos programas; así mismo deben considerarse el alto costo del transporte, que generalmente se realiza por vía fluvial o marítima, y la situación de orden público que limita el acceso a algunas áreas. Por estas razones, involucrar a las comunidades parece tener ventajas y ser efectivo para el control de la malaria, como lo demostraron Rojas y colaboradores en el Chocó (13 y como lo reportan en el presente número Alvarado y colaboradores en el área urbana y rural de Buenaventura y en otros

  10. Editorial

    Directory of Open Access Journals (Sweden)

    José Bernal Rivas Fernández

    2013-01-01

    bibliotecas digitales y repositorios institucionales. Lo que interesa de este trabajo es expresar la manera en que los metadatos se han ido fortaleciendo en las comunidades bibliotecarias, y señalar que la perspectiva actual es mirar hacia lo que está sucediendo en el entorno de los datos ligados como eje de trabajo de la Web Semántica. De acuerdo con el propósito de este trabajo, hay que destacar que el impacto de los metadatos en las bibliotecas ha abierto nuevas y mejores oportunidades de desarrollo; por ello, el conjunto de supuestos que desarrolla sobre el rompecabezas de los metadatos y su impacto en la catalogación así como en las bibliotecas nos invita a mirar con asombro, pero con cautela, los nuevos tiempos de oportunidad.En la sección de ensayos, Lorena Chaves Salgado presenta Una aproximación al poema “Arte Poética” de Jorge Luis Borges, en realidad, es una lectura sobre este poema. Para ello, aborda ciertos antecedentes teóricos que apoyan los planteamientos expuestos por el autor. La autora parte de la idea de que la obra de arte es una creación que encierra belleza solo por sí misma y, por eso, la obra poética es única y definida y solo puede expresarse por medio del poema mismo. De esta manera, “Arte poética”, aparecido en El hacedor en 1960, combina verso y prosa, estilo característico de un Borges maduro. Esta producción literaria constituye un punto culminante de su obra poética ya consolidada, donde expresa lo esencial que encierra la poesía, cómo se escribe y qué es la poesía.En La biblioteca escolar y las necesidades de información en temas de sexualidad adolescente, Ma. Daniela Muñoz Alvarado hace referencia al tema del papel de la biblioteca escolar ante los adolescentes y ante los nuevos Programas de Estudio de Educación para la Afectividad y la Sexualidad Integral del Ministerio de Educación Pública (MEP, con el objetivo de establecer la relación que existe entre las necesidades informacionales de la poblaci