Spatial Dependence of Crime in Monterrey, Mexico

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Ernesto Aguayo Téllez

2014-06-01

Full Text Available This paper studies the impact that the characteristics of the environment have on crime using neighborhood aggregate data of the Monterrey Metropolitan Area for the year 2010. Data spatial autocorrelation is corroborated, i.e. neighborhoods with high crime rates have a positive impact on the crime rates of its surrounding neighborhoods. Once it was controlled through the bias caused by spatial autocorrelation and data censoring, it is evidenced that the likelihood of being a crime victim and the probability of becoming an offender is positively related to variables such as unemployment, the percentage of young men and the existence of schools, hospitals or markets in the neighborhood.

Experience with the 67 Megatron in the IMSS Specialties Hospital Num. 25 in Monterrey

International Nuclear Information System (INIS)

Gonzalez V, V.Z.

1989-01-01

The basic characteristics of the 67 Megatron, the property of Hospital Num. 25 of IMSS in Monterrey, are presented here and also other data of interest to the department of oncology and the physics area. (Author)

Análisis socioeconómico e interrelación de las pesquerías de sardina y atún aleta azul en la región noroeste de México

Directory of Open Access Journals (Sweden)

Raúl Jesús del Moral-Simanek

2010-01-01

Full Text Available El establecimiento de las engordas de atún aleta azul en las costas de Baja California cambió el destino de las capturas de sardina, ya que antes se destinaban al mercado de congelados y a la elaboración de harina de pescado, y en la actualidad se utilizan como alimento para el atún aleta azul. Esto generó un efecto socioeconómico positivo para los armadores y pescadores de pelágicos menores, ya que la llegada de grandes capitales foráneos para el desarrollo de las engordas de atún mejoró los precios de la sardina, e hizo más rentable su pesquería.

Ethnobotany in the Cumbres de Monterrey National Park, Nuevo León, México.

Science.gov (United States)

Estrada, Eduardo; Villarreal, José A; Cantú, César; Cabral, Ismael; Scott, Laura; Yen, Carmen

2007-01-30

An ethnobotanical study in the Cumbres de Monterrey National Park (CMNP), Nuevo Leon, Mexico was conducted. In spite of the large area (1,773.7 km2), heterogeneous physiography, contrasting plant communities and high species diversity of the CMNP, very little was previously known about its useful plants. Based on 95 interviews with inhabitants of the region who were 35 years old or older, we recorded ethnobotanical data of 240 species (comprising 170 genera and 69 botanical families), and 146 different uses. Most of the cited uses (98) were found to be medicinal ones. Ninety five inhabitants 35 years old and oldest were interviewed to know what are the main plant uses in the Cumbres de Monterrey National Park. Two hundred and forty species, 170 genera, and 69 families of useful plants and 146 different uses were recorded. We found most of the uses to be medicinal (98), while the rest (48) represent various purposes. Herbaceous plants are the most used, followed by shrubs and trees.

Violence against Elderly Migrants and Its Consequences on Their Health: Experience from Monterrey, Mexico

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Acharya Arun Kumar

2014-12-01

Full Text Available In this paper, an attempt has been made to analyse how the violence and abuse against elderly migrants in Monterrey, Mexico affects their health. For this research, 257 elderly Mexican migrants were surveyed in the Metropolitan Area of Monterrey during 2012 through 2013. The study found that the majority of elderly people migrate to urban areas in search of a better economic opportunity. Once in the city, they are absorbed into the informal economic sectors. Results indicate that most of these elderly people suffer physical, sexual and psychological violence, as well as neglect and financial abuse from their employer, relatives, clients and pedestrians, which has an adverse effect on their health. Elderly migrants reported numerous health problems, where many of them were suffering from different types of injuries, stress and depression, among others. This paper concluded that violence suffered by elderly migrants has a significant impact on their health.

Estructura territorial del turismo en la Zona Metropolitana de Monterrey, México

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Álvaro Sánchez Crispin

2012-02-01

Full Text Available Este trabajo tiene como objetivo central revelar la estructura territorial de la actividad turística contemporánea en la capital del estado de Nuevo León, ciudad cuya dinámica económica ha estado siempre ligada a la expansión constante de la industria y los servicios. Este proceso ha traído consigo, en forma no intencional, la existencia de una infraestructura que ha favorecido el crecimiento del turismo. Hay cuatro secciones básicas en el trabajo: a la referente al lugar que Monterrey ocupa en la jerarquía turística de México; b la parte más extensa del escrito explica la base natural y cultural sobre la que se ha promovido la actividad turística en los últimos años; c la que contiene los resultados de la encuesta a partir de los cuales se revelan los rasgos territoriales notables del turismo regiomontano, y d la parte final expone algunas ideas concluyentes que apuntan a predecir un crecimiento del turismo en Monterrey, en el futuro mediato.

FDI, local sourcing and supportive linkages with domestic suppliers: The case of Monterrey, Mexico

NARCIS (Netherlands)

Jordaan, J.A.

2011-01-01

In this paper, we use unique data from firm level surveys among foreign-owned and domestic producer firms as well as domestic suppliers to obtain novel direct empirical evidence on the level, supportive nature, and impact of input-output linkages in Monterrey, Mexico. Our main empirical findings are

Los sindicatos blancos de Monterrey (1931-2009

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Miguel Ángel Ramírez Sánchez

2011-01-01

Full Text Available Los sindicatos blancos son el equivalente mexicano a los sindicatos amarillos de Francia y España y a los planes de representación del empleado de Estados Unidos y Canadá. De ellos se dice que son organismos obreros sometidos a la voluntad de los patrones, que los crean y dirigen. En México, esta clase de sindicatos eran hasta hace poco un fenómeno regional, restringido a la ciudad de Monterrey, donde han tenido su mayor desarrollo. Sin embargo, coincidiendo con la crisis y reorganización del sindicalismo mexicano y la apertura del sistema político nacional, han crecido en número e influencia política. En este artículo se ofrece un resumen histórico de este movimiento.

Prevalencia de Trastornos de Sueño en Relación con Factores Sociodemográficos y Depresión en Adultos Mayores de Monterrey, México/Prevalence of Sleep Disorders in Relation to Socio-Demographic Factors and Depression in Senior Citizens of Monterrey, Mexico/Prevalência de Transtornos do Sono com relação a Fatores Sociodemográficos e Depressão em Idosos de Monterrey, México

OpenAIRE

Arnoldo Téllez; Dehisy Marisol Juárez-García; Leticia Jaime-Bernal; Cirilo García-Cadena

2016-01-01

La prevalencia de síntomas de trastornos, calidad de sueño y depresión se evaluó en 313 adultos mayores en la ciudad de Monterrey, México con el Cuestionario de Trastornos de Sueño Monterrey, el Índice de Calidad del Sueño de Pittsburgh y la Escala de Depresión Geriátrica de Yesavage. Los resultados indicaron que los adultos mayores presentaron 50% ronquido, 24% piernas inquietas e insomnio, 44.1% mala calidad de sueño, y 62% síntomas de depresión. Los trastornos de sueño son los que más a...

Food safety considerations in relation to Anisakis pegreffii in anchovies (Engraulis encrasicolus) and sardines (Sardina pilchardus) fished off the Ligurian Coast (Cinque Terre National Park, NW Mediterranean).

Science.gov (United States)

Serracca, Laura; Battistini, Roberta; Rossini, Irene; Carducci, Annalaura; Verani, Marco; Prearo, Marino; Tomei, Laura; De Montis, Gabriella; Ercolini, Carlo

2014-11-03

Engraulis encrasicolus and Sardina pilchardus are pelagic fishes of notable economic and gastronomic importance in the northwest Mediterranean (Ligurian Sea, Italy). The consumption of thermally unprocessed or lightly processed, marinated or salted anchovies and sardines presents a potential risk to acquire anisakiasis, a fish-borne parasitic disease in humans. Prevalence and abundance of Anisakis larvae in Engraulis encrasicolus and Sardina pilchardus from the Monterosso fishing grounds (Cinque Terre National Park, Ligurian Sea, Italy) were assessed, and the larvae were identified by morphological and PCR-RFLP methods. Anisakis larvae, all belonging to Anisakis pegreffii spp. were found in the visceral mass of 1050 anchovies (0.8% overall prevalence), whereas no Anisakis larvae were found in the 750 sardines examined. According to these data, the risk of acquiring anisakiasis from the consumption of raw or undercooked anchovies and sardines caught in the fishing area we investigated is very low. Copyright © 2014 Elsevier B.V. All rights reserved.

Monterrey and the Local Media. The study of ideological reproduction through four life stories

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Dda. Lorena Frankenberg

2008-01-01

Full Text Available This paper analyses the ideological discourse of the local print and television news media of the eighties in the city of Monterrey, Mexico according to the biographical narratives of four leading journalists. The purpose is to pay attention to the role of ideology in the media as emphasized by cultural studies in its beginnings. The main question posed was: What was the role of the media in the eighties in the reproduction of the ideology of the economic and industrial elite of Monterrey and its relationship with the value system and civic identity of the audience members? According to the journalists interviewed, members of the industrial elite had a direct and explicit influence in the policies and contents of the main local newspapers and television stations, except for a daily newspaper that lost its predominance when rejecting that influence. The paper discusses the close relationship between media, audiences and the structures of ideological reproduction of the local industrial group, and the ways in which all these elements continously interact.

Capital social y pobreza multidimensional, el caso de hogares pobres en Monterrey, México

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Luis Portales

2014-01-01

Full Text Available El Área Metropolitana de Monterrey, a pesar de tener indicadores de desarrollo superiores al de la mayoría de las ciudades de México, presenta hogares en condiciones de pobreza similares a los observados en las regiones más pobres del país. En este contexto, la presente investigación muestra la relación entre el capital social de los hogares en una colonia de Monterrey con altos niveles de rezago social y sus niveles de pobreza. Para ello se utilizó una técnica de corte etnográfico denominada redes personales y un análisis de corte estadístico, que permite observar cómo hogares con los niveles más elevados de pobreza utilizan su capital social como una estrategia de vida para dar respuesta a sus carencias sociales, mientras que los hogares con menores niveles de pobreza hacen uso de un capital social más estratégico que les permite acceder a una mayor diversidad de recursos económicos, sociales e institucionales.

Utopía humanista de Alfonso Reyes en Monterrey

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Jaime Villarreal

2015-07-01

Full Text Available Este texto discute y enmarca el proyecto humanista pensado por Alfonso Reyes para Monterrey, explora algunos ensayos donde el escritor acuña arquetipos sobre la historia, vocación y carácter de la región y de sus habitantes. La discusión se centra en su "Voto por la Universidad del Norte" (1933 en el que plantea la necesidad de renovar la tradición humanista. Esta investigación sirve también para reconstruir parte del diálogo y polémicas que han caracterizado el campo cultural regiomontano en el siglo XX.

Geo-social and health disparities among persons with disabilities living in Monterrey, Nuevo Leon and Dallas, Texas.

Science.gov (United States)

Nikolova, Silviya P; Small, Eusebius; Campillo, Claudia

2015-07-01

In low and high income countries alike, disability exacerbates social, economic, and health disparities, in spite of their differences. This study seeks to identify factors that predict the circumstances people with disabilities face, including poverty. A cross-sectional study design was employed using census track level data for the cities of Monterrey, Nuevo Leon, and Dallas, Texas, from Mexico 2010 and USA 2000 census data collections. Two methods, spatial autocorrelation and geographically weighted regression were used to identify spatial patterns of disability and to explore the relation between disability and context-specific socio-demographic factors. Results indicated that people with disabilities living below the poverty line experience high segregation levels in the semi-central zones of Dallas. In Monterrey, people with disabilities clustered in central areas of the city. A Geographically Weighted Regression (GWR) from both data analyses reported high goodness of fit (R ≥ 0.8 for Dallas data and R ≥ 0.7 for Monterrey data, respectively) and predictability of disability prevalence when social disadvantage factors such as unemployment, housing insecurity, household living conditions, and lack of education were present. The divergent and sometimes conflicting trends in practices and policies addressing disability in low and high income environments renders a reexamination of the framework of disability. An understanding of local characteristics joins a grounded socio-cultural understanding of the various contexts that shape location-based social networks and political decisions in providing such an analysis. Copyright © 2015 Elsevier Inc. All rights reserved.

Puente Willow Creek en Monterrey, California

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Editorial, Equipo

1965-09-01

Full Text Available Of the 10 awards given every year by the Prestressed Concrete Institute for the most outstanding prestressed concrete projects, two have been awarded in California this year, one of them to the Willow Creek bridge, near Monterrey. The prestressed, double T girders of this bridge were made at a workshop, a great distance from the bridge site. These are 24 m long, 1.35 m high, and are stabilized by transversal diaphragms, 20 cm in thickness. The table deck is of reinforced concrete, being 8.85 m wide and 20 cm thick. The structure is straightforward, slender, and adapts itself pleasantly to the background. It has seven spans and crosses over a secondary road, in addition to bridging the Willow stream. The supporting piles are hollow, of rectangular cross section, and over them a cross beam carries the five girders and the deck itself. The end abutments consist of vertical reinforced concrete walls, and supporting, soil filled, structures. The above information was supplied by the California Road Department.De los diez premios que anualmente concede el Prestressed Concrete Institute para las obras de hormigón pretensado más notables, dos han correspondido a California y uno de ellos al puente de Willow Creek, situado en la región de Monterrey. Las vigas de hormigón pretensado, con sección en forma de doble T, se prefabricaron en un taller situado a gran distancia del puente. Tienen 24 m de longitud y 1,35 m de canto, estando arriostradas con diafragmas transversales de 20 cm de espesor. La losa del tablero, de hormigón armado, tiene 8,85 m de anchura y 20 cm de espesor. La estructura es sencilla, esbelta y armoniza perfectamente con el paisaje que la circunda. Tiene siete tramos y salva un paso inferior secundario y el arroyo Willow. Los soportes, se apoyan sobre pilotes, algunos de gran altura; son huecos, de sección rectangular y terminan en una cruceta que sirve de sostén a las cinco vigas que soportan la losa del tablero. Los estribos

Gender identity and substance use among students in two high schools in Monterrey, Mexico

OpenAIRE

Kulis, Stephen; Marsiglia, Flavio Francisco; Lingard, Erin Chase; Nieri, Tanya; Nagoshi, Julieann

2008-01-01

This study explored relationships between several hypothesized dimensions of gender identity and substance use outcomes within a non-probability sample of adolescents in Monterrey, Mexico. Based on Mexican concepts of machismo and marianismo, four gender identity constructs were measured: aggressive masculinity, assertive masculinity, affective femininity and submissive femininity. The study assessed how well these gender identity measures predicted substance use behaviors, substance use inte...

[Validation of a knowledge-questionnaire about asthma applied to teachers of elementary school of Monterrey, Mexico].

Science.gov (United States)

González Diaz, Sandra Nora; Cruz, Alfredo Arias; González González, Arya Yannel; Félix Berumen, José Alfredo; Weinmann, Alejandra Macías

2010-01-01

asthma is one of the most common chronic childhood diseases; is increasing in prevalence and an important cause of school absenteeism. Previous studies have failed to evaluate knowledge about asthma among elementary school teachers worldwide because of the lack of validated questionnaires. to validate a questionnaire about asthma knowledge for elementary school teachers in Monterrey, Nuevo Leon. an observational, cross sectional, descriptive study, from February to December 2004, by applying a questionnaire to a group of elementary school teachers in Monterrey, Nuevo Leon. The questionnaire is a translation and adaptation to the questionnaire of 13 questions used to assess the knowledge about asthma among parents, according to the National Asthma Education Program of US. a total of 179 questionnaires were applied, in which 6 of the 13 questions were answered correctly by more than 90% of the teachers. The internal consistency reliability was adequate with a Cronbach a coefficient of 0.75. in order to obtain reliable data using questionnaires, these must undergo a validation process. Our questionnaire got validation because of the reliability shown according to the internal consistency analysis.

Gender identity and substance use among students in two high schools in Monterrey, Mexico

Science.gov (United States)

Kulis, Stephen; Marsiglia, Flavio Francisco; Lingard, Erin Chase; Nieri, Tanya; Nagoshi, Julieann

2011-01-01

This study explored relationships between several hypothesized dimensions of gender identity and substance use outcomes within a non-probability sample of adolescents in Monterrey, Mexico. Based on Mexican concepts of machismo and marianismo, four gender identity constructs were measured: aggressive masculinity, assertive masculinity, affective femininity and submissive femininity. The study assessed how well these gender identity measures predicted substance use behaviors, substance use intentions, expectancies, and normative approval, and exposure and vulnerability to substance offers. Data were drawn from questionnaires completed by 327 students from 2 Monterrey secondary schools. Multivariate ordered logistic and linear regression analyses, adjusted for school level effects, indicated that aggressive masculinity was associated with higher risk of drug use on most outcomes, while affective femininity was associated with lower risk on selected outcomes. Assertive masculinity was associated with only one of the outcomes examined and submissive femininity with none of them. Most gender identity effects persisted after controlling for biological sex, academic performance, age, and other gender identity measures. For two of the outcomes, the gender identity measures had significantly stronger effects for males than for females. The findings are interpreted in light of males’ higher risk for drug use and changes in gender roles and gendered behavior that are now occurring in Mexico as in the U.S. PMID:18329826

Gender identity and substance use among students in two high schools in Monterrey, Mexico.

Science.gov (United States)

Kulis, Stephen; Marsiglia, Flavio Francisco; Lingard, Erin Chase; Nieri, Tanya; Nagoshi, Julieann

2008-06-01

This study explored relationships between several hypothesized dimensions of gender identity and substance use outcomes within a non-probability sample of adolescents in Monterrey, Mexico. Based on Mexican concepts of machismo and marianismo, four gender identity constructs were measured: aggressive masculinity, assertive masculinity, affective femininity and submissive femininity. The study assessed how well these gender identity measures predicted substance use behaviors, substance use intentions, expectancies, and normative approval, and exposure and vulnerability to substance offers. Data were drawn from questionnaires completed by 327 students from 2 Monterrey secondary schools. Multivariate ordered logistic and linear regression analyses, adjusted for school level effects, indicated that aggressive masculinity was associated with higher risk of drug use on most outcomes, while affective femininity was associated with lower risk on selected outcomes. Assertive masculinity was associated with only one of the outcomes examined and submissive femininity with none of them. Most gender identity effects persisted after controlling for biological sex, academic performance, age, and other gender identity measures. For two of the outcomes, the gender identity measures had significantly stronger effects for males than for females. The findings are interpreted in light of males' higher risk for drug use and changes in gender roles and gendered behavior that are now occurring in Mexico as in the U.S.

Prevalencia de Trastornos de Sueño en Relación con Factores Sociodemográficos y Depresión en Adultos Mayores de Monterrey, México/Prevalence of Sleep Disorders in Relation to Socio-Demographic Factors and Depression in Senior Citizens of Monterrey, Mexico/Prevalência de Transtornos do Sono com relação a Fatores Sociodemográficos e Depressão em Idosos de Monterrey, México

Directory of Open Access Journals (Sweden)

Arnoldo Téllez

2016-03-01

Full Text Available La prevalencia de síntomas de trastornos, calidad de sueño y depresión se evaluó en 313 adultos mayores en la ciudad de Monterrey, México con el Cuestionario de Trastornos de Sueño Monterrey, el Índice de Calidad del Sueño de Pittsburgh y la Escala de Depresión Geriátrica de Yesavage. Los resultados indicaron que los adultos mayores presentaron 50% ronquido, 24% piernas inquietas e insomnio, 44.1% mala calidad de sueño, y 62% síntomas de depresión. Los trastornos de sueño son los que más afectan la calidad de sueño en esta población, por lo que es importante la detección y tratamiento de estos trastornos en los adultos mayores.

Persistent Organic Pollutants and Heavy Metal Concentrations in Soil from the Metropolitan Area of Monterrey, Nuevo Leon, Mexico.

Science.gov (United States)

Orta-García, Sandra Teresa; Ochoa-Martinez, Angeles Catalina; Carrizalez-Yáñez, Leticia; Varela-Silva, José Antonio; Pérez-Vázquez, Francisco Javier; Pruneda-Álvarez, Lucia Guadalupe; Torres-Dosal, Arturo; Guzmán-Mar, Jorge Luis; Pérez-Maldonado, Iván N

2016-04-01

The purpose of this study was to assess the levels of polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT), dichlorodiphenyldichloroethane (DDE), and four heavy metals (arsenic, cadmium, and lead) in outdoor surface soils (50 samples) collected from the metropolitan area of Monterrey in Mexico. Total PBDEs levels ranged from 1.80 to 127 µg/kg, with mean total PBDEs level of 14.2 ± 21.5 µg/kg (geometric mean ± standard deviation). For PCBs, the mean total level in the studied soils was 23.5 ± 20.2 µg/kg (range 4.0-65.5 µg/kg). An important finding in our study was that all soil samples (100%) had detectable levels of the metabolite p,p'-DDE. Moreover, the mean total DDT level (∑p'p-DDT and p'p-DDE) was approximately 132 ± 175 µg/kg. The mean levels for arsenic, cadmium, and lead in soil were 5.30 ± 1.35 (range 1.55-7.85) mg/kg, 2.20 ± 1.20 (range 0.65-6.40) mg/kg, and 455 ± 204 (range 224-1230) mg/kg, respectively. Our study has several limitations, the most notable of which is the small sample of soils evaluated. However, this screening study provided concentration data for the occurrence of POPs and four heavy metals in soil from the metropolitan area of Monterrey, Nuevo Leon, Mexico, and taking into consideration that soil is an important pathway of exposure for people, a biomonitoring program for the surveillance of the general population in the metropolitan area of Monterrey, Nuevo Leon is deemed necessary.

Mujeres invisibles y victimización sexual en México. El caso de la trata de mujeres en Monterrey

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Arun Kumar Acharya

2013-01-01

Full Text Available El objetivo principal del artículo es analizar el fenómeno y la dinámica de la trata de mujeres hacia la ciudad de Monterrey, así como la explotación sexual y sus consecuencias. R esultados muestran que en los últimos años el fenómeno se ha incrementado en Monterrey por diversas cues tiones. El crecimiento económico ha provocado un aumento masivo de los viajes de negocios y turísticos. Paralelamente, se ha desarrollado el turismo sexual. Para satisfacer la demanda, los dueños de bares y centros de masajes viajan a las zonas marginadas del país, enganchan a muchachas jóvenes por medio de varias promesas y después las obligan a prostituirse. Las mujeres tratadas sufren una constante violencia y explotación, lo que afecta su salud física, mental y sexual.

Diagnostic, analysis and proposal of public transport in the Metropolitan Area of Monterrey

OpenAIRE

Carrancá Palomo, Humberto

2017-01-01

Màster universitari en Estudis Avançats en Arquitectura: Gestió i Valoració Urbana i Arquitectònica La realización de dicho documento está justificado a causa de la congestión y saturación vial que se ha incrementado paulatinamente en el área metropolitana de Monterrey. Esto en conjunto con la búsqueda actual del mejoramiento ambiental, la implementación de la movilidad como parte de los asentamientos humanos y una clara deficiencia del transporte público del AMM conlleva a genera...

Márgenes de Error para un Esquema de Muestreo Combinado Con Aplicación en la Medición de Niveles de Audiencia de la Radio en Monterrey

OpenAIRE

Castañeda Pérez, Laura E.

2001-01-01

La Unidad de Estudios Estadísticos perteneciente al Departamento de Matemáticas del ITESM Campus Monterrey, realiza mensualmente la medición de los niveles de la audiencia (rating) de la radio en Monterrey y su área Metropolitana. Esta información es publicada en formato de reporte para uso de grupos radiofónicos y personas interesadas. Los niveles de audiencia son obtenidos a través de entrevistas en hogares y lugares de influencia. En diferentes sectores de la población se eligen de forma a...

La experiencia social histórica de asistencia al cine en Monterrey (Nuevo León, México) durante las décadas de 1930 a 1960

OpenAIRE

Lozano, José Carlos; Meers, Philippe; Biltereyst, Daniel

2016-01-01

En este trabajo se analiza la experiencia social histórica de asistencia al cine en Monterrey (Nuevo León, México) durante las décadas de 1930 a 1960, según entrevistas focalizadas con 28 informantes mayores de 65 años. En los resultados, se destaca la importancia histórica de las salas de cine, así como las películas y los actores estadounidense y mexicanos, en la vida personal, familiar y colectiva de Monterrey, dentro del contexto histórico de su transformación en una de las ciudades más g...

[Heart transplant in Monterrey, Nuevo León].

Science.gov (United States)

Herrera-Garza, Eduardo Heberto; Molina-Gamboa, Julio David; Ortega-Durán, Oscar Alejandro; Chavarria-Martánez, Uriel; Martínez-Chapa, Héctor David; Elizondo-Sifuentes, Luis Angel; De-La-fuente-Magallanes, Felipe de Jesús; Muñiz-García, Arturo; Decanini-Arcaute, Horacio; Ibarra-Flores, Marcos; Nacoud-Askar, Alfredo; Herrera-Garza, José Luis; Torre-Amionet, Guillermo

2011-09-01

Heart failure constantly increases its incidence and prevalence in our society, it was imperative to start a heart transplant program to improve the survival rates of patients with end stages of the disease. Legal issues made impossible to transplant patients out of Mexico City until recent years. Even with an acute hemodynamic and clinic improvement after the transplant, these patients frequently develop complications such as graft rejection or opportunistic infections due to the immunosuppressive schemes increasing the morbidity and mortality of the procedure. In the present article we report the experience acquired with 65 heart transplant patients from 4 transplant programs in Monterrey, Nuevo Leon, one of them from the socialized system and the other three from private hospitals. Our program not only has successfully transplanted patients with advanced age but, for the first time in Latin America we have transplanted patients assisted with the ambulatory Thoratec TLC II system. Even that we have faced obstacles like a newly started donation culture in our population and limited resources, our patient's survival rate push us to continue working with these very ill population.

Prevalencia de Trastornos de Sueño en Relación con Factores Sociodemográficos y Depresión en Adultos Mayores de Monterrey, México

OpenAIRE

Arnoldo Téllez; Dehisy Marisol Juárez-García; Leticia Jaime-Bernal; Cirilo Gracía-Cadena

2016-01-01

La prevalencia de síntomas de trastornos, calidad de sueño y depresión se evaluó en 313 adultos mayores en la ciudad de Monterrey, México con el Cuestionario de Trastornos de Sueño Monterrey, el Índice de Calidad del Sueño de Pittsburgh y la Escala de Depresión Geriátrica de Yesavage. Los resultados indicaron que los adultos mayores presentaron 50% ron - quido, 24% piernas inquietas e insomnio, 44.1% mala calidad de sueño, y 62% síntomas de depresión. Los trastornos de sueño son los que má...

Consumo de drogas y violencia laboral en mujeres trabajadoras de Monterrey, N. L., México Consumo de drogas e violência ocupacional em mulheres trabalhadoras de Monterrey, N. L. México Drug consumption and occupational violence in working women of Monterrey, N. L., Mexico

Directory of Open Access Journals (Sweden)

Maria Magdalena Alonso Castillo

2005-12-01

Full Text Available El propósito de este estudio fue explorar el consumo de drogas y violencia laboral en una muestra de 669 mujeres mayores de edad, que trabajaban y vivían en trece Áreas Geoestadísticas Básicas de Monterrey, Nuevo León, México. Se adoptó un diseño descriptivo y correlacional con aproximación cualitativa. Los resultados revelaron que el 37.1% de las mujeres consumió alcohol, el 29.1% tabaco, el 0.4% marihuana, el 0.1% inhalables y, entre las drogas médicas, el 5% consumió tranquilizantes y el 1.0% otras sustancias (barbitúricos, antidepresivos, Tylenol/codeína. La prueba chi-cuadrada no encontró diferencia significativa de los factores sociodemográficos y laborales con el consumo de drogas (p>.05, a excepción de la forma de trabajo (c2=18.08, gl=4, p=.001. Sin embargo, el índice de violencia mostró asociación positiva con el consumo de drogas (pO propósito do estudo foi explorar o consumo de drogas e violência ocupacional em uma amostra de 669 mulheres maiores de idade, que trabalham e moram em treze Áreas Geo-Estatísticas Básicas de Monterrey, Nuevo León, México. Foi adotado um desenho descritivo e correlacional com abordagem qualitativa. Resultados revelaram que 37,1% das mulheres consumiram álcool, 29,1% tabaco, 0.4% maconha, 0,1% inaláveis e, entre as drogas médicas, 5% consumiu tranqüilizantes e 1,0% outras sustâncias (barbitúricos, antidepressivos, Tylenol/Codeína. O teste qui-quadrado não encontrou diferença significativa dos fatores sócio-demográficos e ocupacionais com o consumo de drogas (p>.05, exceto com a forma de trabalho (c²=18.08, gl=4, p=.001. No entanto, o índice de violência mostrou associação positiva com o consumo de drogas (pThe purpose of this study was to explore drug consumption and occupational violence in a sample of 669 adult women, working and living in 13 basic geostatistical areas of Monterrey, Nuevo León, México, using a descriptive correlational design with a

Coupling between the environment and the pelagic resources exploited off northern Chile: ecosystem indicators and a conceptual model Acoplamiento entre el ambiente y los recursos pelágicos explotados en el norte de Chile: un modelo conceptual

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Eleuterio Yáñez

2008-01-01

pesquería de anchoveta (Engraulis ringens; en tanto, desde mediado de los 70's los desembarques de sardina (Sardinops sagax aumentan notablemente. Un segundo cambio de régimen se observa a finales de los 80's, representado principalmente por la notable recuperación de anchovy y disminución de sardina. Se presenta un modelo conceptual integrador de los diferentes fenómenos locales y de gran escala que afectan el ambiente marino del norte de Chile, y la distribución y abundancia de recursos pelágicos. El modelo considera análisis de datos ambientales y bio-pesqueros a distintas escalas, y describe como las fluctuaciones interdecadales (asociadas a cambios de régimen e interanuales (asociadas a los eventos El Niño del Pacífico Ecuatorial se manifiestan en el Pacífico Sur Oriental y por tanto en la zona norte de Chile, afectando el ciclo anual, la dinámica de las ondas atrapadas a la costa y la surgencia costera. En este marco, las fluctuaciones interdecadales estarían jugando un rol importante en la secuencia del reemplazo anchoveta-sardina-anchoveta.

Formation of post-fire water-repellent layers in Monterrey pine (Pinus radiata D. Don) plantations in south-central Chile

Science.gov (United States)

P. Garcia-Chevesich; R. Pizarro; C. L. Stropki; P. Ramirez de Arellano; P. F. Ffolliott; L. F. DeBano; Dan Neary; D. C. Slack

2010-01-01

A wildfire burned about 15,000 ha of Monterrey Pine (Pinus radiata D. Don) plantations near Yungay, Chile, in January of 2007. Post-fire water repellency (hydrophobicity) was measured using the water-drop-penetration-time (WDPT) method at depths of 0, 5, and 10 mm from the soil surface. These measurements were collected on burned sites of both young (4-years old) and...

Družbena segregacija avtohtonih migrantov v Mehiki: primer mesta Monterrey

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Arun Kumar Acharya

2012-01-01

Full Text Available Značilen pojav, ki ga lahko opazimo v Mehiki, je ruralno urbana migracija oziroma preseljevanje ljudi s podeželja v mesta. Zadnjih nekaj let se stopnja preseljevanja avtohtonih prebivalcev v mesta na severu Mehike, še zlasti v Monterrey, kjer iščejo zaposlitev, nenadzorovano veča. Ko migranti prispejo v to velemesto, imajo zaradi prikrite diskriminacije težave s prilagajanjem mestnemu okolju. Glavni argument in hipoteza tega članka je, da se ti ljudje sami družbeno izolirajo in segregirajo, ker se bojijo (kulturne in rasne diskriminacije in nasilja. Podatke za to študijo smo zbrali s pomočjo terenske raziskave, za katero smo leta 2009 in 2010 v Monterreyu intervjuvali 350 avtohtonih prebivalcev, ki so se tja priselili iz različnih krajev v Mehiki.

A Web-based Tool for Transparent, Collaborative Urban Water System Planning for Monterrey, Mexico

Science.gov (United States)

Rheinheimer, D. E.; Medellin-Azuara, J.; Garza Díaz, L. E.; Ramírez, A. I.

2017-12-01

Recent rapid advances in web technologies and cloud computing show great promise for facilitating collaboration and transparency in water planning efforts. Water resources planning is increasingly in the context of a rapidly urbanizing world, particularly in developing countries. In such countries with democratic traditions, the degree of transparency and collaboration in water planning can mean the difference between success and failure of water planning efforts. This is exemplified in the city of Monterrey, Mexico, where an effort to build a new long-distance aqueduct to increase water supply to the city dramatically failed due to lack of transparency and top-down planning. To help address, we used a new, web-based water system modeling platform, called OpenAgua, to develop a prototype decision support system for water planning in Monterrey. OpenAgua is designed to promote transparency and collaboration, as well as provide strong, cloud-based, water system modeling capabilities. We developed and assessed five water management options intended to increase water supply yield and/or reliability, a dominant water management concern in Latin America generally: 1) a new long-distance source (the previously-rejected project), 2) a new nearby reservoir, 3) expansion/re-operation of an existing major canal, 4) desalination, and 5) industrial water reuse. Using the integrated modeling and analytic capabilities of OpenAgua, and some customization, we assessed the performance of these options for water supply yield and reliability to help identify the most promising ones. In presenting this assessment, we demonstrate the viability of using online, cloud-based modeling systems for improving transparency and collaboration in decision making, reducing the gap between citizens, policy makers and water managers, and future directions.

Effects of chitosan on the shelf life of marinated sardine (Sardina pilchardus fillets during refrigerated storage

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Aygül Küçükgülmez

2012-07-01

Full Text Available This study was carried out to evaluate the effect of chitosan on chemical, colour, sensory and microbial changes of marinated sardine (Sardina pilchardus fillets. Marination solution consisted of 10% sodium chloride + 1% chitosan (dissolved in 3% acetic acid for the chitosan group, and 10% sodium chloride + 3% acetic acid solution for the control group. After the marination process, sardine fillets were packed and stored at 4ºC for 60 days. Thiobarbituric acid (TBA values were found to be lower in the chitosan group than the control group (PL*, a*, or b* values of marinated sardine fillets. According to sensory analysis, shelf life of the chitosan group was found to be ten days longer than that of the control group. Total bacteria count of two marinated groups was found to be less than 1 log CFU/g. This study concluded that sardine marination with the addition of chitosan can delay undesirable chemical changes, retard lipid oxidation, improve sensory attributes and extend the shelf life of the product during refrigerated storage.

Papel de los comites de participacion ciudadana en la gestion del gobierno municipal: Caso Municipio de Monterrey.

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Guillen, A

2007-01-01

Full Text Available The fundamental basics of participating civic committees with regards to the governmental decision making at the municipality levels are described. An example and a practical case resulting from research on participation of these committees for the Monterrey municipality are provided. The role of these civic participating committees in good democratic functioning and correct achievement of the aims of the governmental plans for the enhancement and improvement of the sociopolitical, economical and environmental quality of citizen’s life are discussed.

Amotivation in physical activity of the population over 15 years of Monterrey (Mexico

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Jeanette Magnolia López Walle

2011-01-01

Full Text Available The aim of this paper is to describe the reasons that have given origin to the amotivation of Monterrey adult citizens that have not done any physical activity according to gender, age and the level of studies. The sample was estimated in 1,118 subjects to obtain result validity with an error range of ±3% and a reliability level of 95.5%. The sample procedure used has been multistage with a proportional affixation, resorting to two types of stratificated random sampling by conglomerates. Results reveal that the values beliefs were the ones generating the amotivation to never have practiced any physical activity on leisure time of the subjects from 30 to 44 years old with high school finished

Characterisation of purified parvalbumin from five fish species and nucleotide sequencing of this major allergen from Pacific pilchard, Sardinops sagax.

Science.gov (United States)

Beale, Janine E; Jeebhay, Mohamed F; Lopata, Andreas L

2009-09-01

IgE-mediated allergic reaction to seafood is a common cause of food allergy including anaphylactic reactions. Parvalbumin, the major fish allergen, has been shown to display IgE cross-reactivity among fish species consumed predominantly in Europe and the Far East. However, cross-reactivity studies of parvalbumin from fish species widely consumed in the Southern hemisphere are limited as is data relating to immunological and molecular characterisation. In this study, antigenic cross-reactivity and the presence of oligomers and isomers of parvalbumin from five highly consumed fish species in Southern Africa were assessed by immunoblotting using purified parvalbumin and crude fish extracts. Pilchard (Sardinops sagax) parvalbumin was found to display the strongest IgE reactivity among 10 fish-allergic consumers. The cDNA sequence of the beta-form of pilchard parvalbumin was determined and designated Sar sa 1.0101 (accession number FM177701 EMBL/GenBank/DDBJ databases). Oligomeric forms of parvalbumin were observed in all fish species using a monoclonal anti-parvalbumin antibody and subject's sera. Isoforms varied between approximately 10-13 kDa. A highly cross-reactive allergenic isoform of parvalbumin was identified and sequenced, providing a successful primary step towards the generation of a recombinant form that could be used for diagnostic and potential therapeutic use in allergic individuals.

Post-Electing Scenario Analysis, MÉXICO 2012. A Look from Monterrey and its Metropolitan Area Opinion leaders

OpenAIRE

Centeno Maldonado, Juan Carlos; Universidad Autónoma de Coahuila

2015-01-01

Para la propuesta Análisis del escenario postelectoral, México 2012: una mirada desde los líderes de opinión de Monterrey y su Área Metropolitana, se realizaron 11 entrevistas a profundidad a representantes de los partidos políticos, periodistas, académicos y a representantes de ONG y OSC que se llevaron a un posterior análisis minucioso con el apoyo del programa Nvivo, para que, desde su mirada como líderes de opinión del entorno regional, contribuyeran a responder el objetivo de investigaci...

Prevalencia de Trastornos de Sueño en Relación con Factores Sociodemográficos y Depresión en Adultos Mayores de Monterrey, México

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Arnoldo Téllez

2016-01-01

Full Text Available La prevalencia de síntomas de trastornos, calidad de sueño y depresión se evaluó en 313 adultos mayores en la ciudad de Monterrey, México con el Cuestionario de Trastornos de Sueño Monterrey, el Índice de Calidad del Sueño de Pittsburgh y la Escala de Depresión Geriátrica de Yesavage. Los resultados indicaron que los adultos mayores presentaron 50% ron - quido, 24% piernas inquietas e insomnio, 44.1% mala calidad de sueño, y 62% síntomas de depresión. Los trastornos de sueño son los que más afectan la calidad de sueño en esta población, por lo que es importante la detección y tratamiento de estos trastornos en los adultos mayores.

Fritura de filetes de sardinas congeladas en aceite de oliva. Influencia de diferentes métodos de descongelación sobre el contenido graso y la composición en ácidos grasos

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Álvsarez-Pontes, M. E.

1994-06-01

Full Text Available To study the effect of freezing and different thawing methods on the moisture, fat an fatty acid content of fried sardines, fresh sardine fillets were first frozen and then some were thawed either in a refrigerator at 4°C or in a microwave over prior to frying. These fillets were then analyzed both before and after being fried in olive oil. Frying increased the fat content of the fillets, mainly due to water losses, especially in those thawed in the refrigerator. Mono-unsaturated fatty acid (MUFA content increased in fresh and frozen fillets after frying from 21% to 55% and 56%, respectively. However, thawing prior to frying had a different effect depending on the method because oleic acid absorption was facilitated by refrigerator-thawing, the MUFA content increased to 61,8%, whereas after microwave-thawing the MUFA content reached 47%. Saturated and polyunsaturated fatty acids decreased in fried fillets compared to uncooked ones as a consequence of the increase in MUFA. Frying decreased the C22:6/C16:0 ratio with respect to fresh fillets in frozen fillets and in those thawed in the refrigerator but not in those thawed in a microwave.

Filetes de sardinas frescas, congeladas y descongeladas en frigorífico a 4°C o en microondas se analizaron en crudo y después de freírlos en aceite de oliva, con objeto de conocer si la congelación y descongelación, previa a la fritura, alteraba los cambios en humedad, grasa y composición en ácidos grasos que introdujera la fritura. El contenido graso (g/100g de filetes de sardinas se incrementó durante el proceso de fritura, debido, sobre todo, a las pérdidas de agua. Dicho efecto aumentó principalmente en la descongelación en frigorífico. Con la fritura, la sardina fresca y la congelada sin previa descongelación se enriquecieron en ácido oleico, ascendiendo el contenido de ácidos grasos monoinsaturados en (AGM del 21 al 55-56%. La descongelación, anterior a la fritura, influyó de forma

URBANIZATION AND SPATIAL CHANGES IN DEMOGRAPHIC CHARACTERISTICS IN MONTERREY METROPOLITAN REGION

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Arun Kumar Acharya

2011-10-01

Full Text Available This paper tries to explore the process of urbanization and spatial changes in demographic features in the Monterrey Metropolitan Region (MMR, Mexico. This city is the third largest urban sector in Mexico which has around 4 million population. It is also the industrial and economic capital of the country. The present study found that rapid urbanization in the metropolitan region has a close association with process of industrialization. In population distribution and composition, study found that the metropolitan region had its “demographic transition” during the years seventies and currently the region is taking advantages of demographic bonus cohort, i.e. a higher concentration of population in economic active groups compare to children and old age population. However, this paper indentified a higher imbalance in metropolitan demographic scenario. On the one hand, there is di-populization in the city center region and in other there is a steady increment of population in peri-urban region.

An Overview of Mexico’s Medical Tourism Industry: The Cases of Mexico City and Monterrey. version 1.0

OpenAIRE

Núñez, Emanuel Orozco; Arias, Rosa María Bejarano; Martínez, Matilde Elizabeth Aguilar; Larios, José Arturo Ruiz; Crooks, Valorie; Labonté, Ronald; Snyder, Jeremy; Nigenda, Gustavo

2014-01-01

In this report we offer some general information on Mexico and its health system before going into detail about key developments in its medical tourism industry. Complementing the main text, nine Appendices provide additional detailed insights. Appendix 1 offers a synthesis of media coverage of medical tourism in Mexico City’s main newspapers in recent years, while Appendix 2 is a synthesis of media coverage of 2 | P a g e medical tourism in Monterrey. In Appendix 3 we share a summary of poli...

Paisaje natural y envejecimiento saludable en el lugar: el caso del Parque Nacional Cumbres de Monterrey (México)

OpenAIRE

Sánchez-González, Diego; Adame Rivera, Lydia Marcela; Rodríguez Rodríguez, Vicente

2018-01-01

La investigación analiza los factores del paisaje natural cotidiano que favorecen el envejecimiento saludable en el lugar y la calidad de vida de las personas mayores residentes en los límites del Parque Nacional Cumbres de Monterrey (México). La metodología ha consistido en la utilización de métodos como fotovoz y mapas mentales aplicados a grupos de discusión por personas mayores, encuestas y Sistemas de Información Geográfica. Los resultados indican que la exposición a elementos naturales ...

Alimentos saludables: la percepción de los jóvenes adolescentes en Monterrey, Nuevo León

OpenAIRE

Elías Alvarado Lagunas; José Raúl Luyando Cuevas

2013-01-01

En este artículo se presentan los resultados de la caracterización del consumo de alimentos saludables en Monterrey, obtenidos mediante la aplicación de una encuesta y un Análisis Factorial. Este último permite explicar las correlaciones entre las variables observadas, en términos de un número menor de variables no observadas llamadas factores. El objetivo fue conocer la percepción de los adolescentes sobre el riesgo a la salud que existe en torno a su alimentación cotidiana. Uno de los princ...

Exposición a humo de tabaco ajeno en lugares públicos de la Ciudad de México, Guadalajara y Monterrey Tobacco smoke exposure in public places in Mexico City, Guadalajara and Monterrey

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Luz Myriam Reynales-Shigematsu

2010-01-01

Full Text Available Objetivo. Cuantificar la exposición al humo de tabaco ajeno (HTA en lugares públicos de México, con el fin de impulsar políticas locales de ambientes 100% libres de humo de tabaco. Material y métodos. Se monitoreó aleatoriamente 20% de las áreas interiores de hospitales, escuelas y oficinas públicas de Monterrey, Guadalajara y la Ciudad de México. La concentración mediana de nicotina ambiental fue estimada por ciudad, tipo de espacio público y área interior. Resultados. La concentración mediana en los espacios donde se detectó nicotina fue de 0.06 µg/m3 (P25=0.03, P75=0.12 µg/m3, las mayores concentraciones se obtuvieron en la Ciudad de México y en las oficinas públicas. No se detectó nicotina en 75% de los espacios monitoreados. Conclusiones. El monitoreo ambiental de nicotina es una herramienta útil para fortalecer la implementación y evaluar el cumplimiento de la política de ambientes 100% libres de humo de tabaco.Objective. To quantify environmental tobacco smoke exposure in public places in Mexico to promote policies of 100% smoke-free environments. Materials and Methods. In hospitals, schools and public offices of Monterrey, Guadalajara and Mexico City 20% of inner areas were monitored. Median nicotine concentrations were estimated by city, type of public space and type of inner area. Results. Median concentration in areas where nicotine was detected was 0.06 µg/m3 (P25=0.03, P75=0.12 µg/m3. Higher concentrations were found in Mexico City and in public offices. Nicotine was not detected in 75% of monitored areas. Conclusions. Monitoring environmental nicotine is a useful tool to evaluate compliance of public places with the smoke-free environments legislation, and could constitute an important source of information to strengthen implementation efforts.

Bases conceptuales para la aplicación de una evaluación de estrategias de manejo (EEM en sardina común (Strangomera bentincki y anchoveta (Engraulis ringens en la zona centro-sur de Chile

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Marcos Arteaga

2014-07-01

Full Text Available Se identifican los factores claves a considerar en el desarrollo de una evaluación de estrategias de manejo (EEM para los recursos pequeños pelágicos en la zona de centro-sur de Chile, sardina común (Strangomera bentincki y anchoveta (Engraulis ringens. En Chile, la EEM no ha sido aplicada al manejo de estas pesquerías y la asesoría científica se ha desarrollado sobre la evaluación de estrategias de explotación utilizando modelos de evaluación mono-específicos. Para ambas especies se analizan los siguientes tópicos: i alternancia en la abundancia poblacional asociada a los pulsos de reclutamientos y capturas, ii variabilidad temporal en la fuerza del reclutamiento, iii estacionalidad del crecimiento cohorte y especie-específico, y iv relación ambiente-recurso. Los resultados evidencian que los tópicos analizados debieran ser considerados en la construcción de un modelo operativo y/o en la regla de cosecha, dado el carácter mixto de ambas pesquerías, su marcada alternancia y la influencia de las condiciones ambientales. Por lo tanto, se propone que el diseño e implementación de una EEM para sardina común y anchoveta, incluya los elementos señalados en un marco de evaluación multi-especifico y de manejo de carácter mixto.

Stomach Chitinase from Japanese Sardine Sardinops melanostictus: Purification, Characterization, and Molecular Cloning of Chitinase Isozymes with a Long Linker

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Satoshi Kawashima

2016-01-01

Full Text Available Fish express two different chitinases, acidic fish chitinase-1 (AFCase-1 and acidic fish chitinase-2 (AFCase-2, in the stomach. AFCase-1 and AFCase-2 have different degradation patterns, as fish efficiently degrade chitin ingested as food. For a comparison with the enzymatic properties and the primary structures of chitinase isozymes obtained previously from the stomach of demersal fish, in this study, we purified chitinase isozymes from the stomach of Japanese sardine Sardinops melanostictus, a surface fish that feeds on plankton, characterized the properties of these isozymes, and cloned the cDNAs encoding chitinases. We also predicted 3D structure models using the primary structures of S. melanostictus stomach chitinases. Two chitinase isozymes, SmeChiA (45 kDa and SmeChiB (56 kDa, were purified from the stomach of S. melanostictus. Moreover, two cDNAs, SmeChi-1 encoding SmeChiA, and SmeChi-2 encoding SmeChiB were cloned. The linker regions of the deduced amino acid sequences of SmeChi-1 and SmeChi-2 (SmeChi-1 and SmeChi-2 are the longest among the fish stomach chitinases. In the cleavage pattern groups toward short substrates and the phylogenetic tree analysis, SmeChi-1 and SmeChi-2 were classified into AFCase-1 and AFCase-2, respectively. SmeChi-1 and SmeChi-2 had catalytic domains that consisted of a TIM-barrel (β/α8–fold structure and a deep substrate-binding cleft. This is the first study showing the 3D structure models of fish stomach chitinases.

Assessment of the sardine (Sardina pilchardus Walbaum, 1792 fishery in the eastern Mediterranean basin (North Aegean Sea

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K. ANTONAKAKIS

2011-06-01

Full Text Available The aim of this study was to describe the biometric characteristics of the European sardine (Sardina pilchardus catches and assess the current status of sardine stock in North Aegean Sea based on population characteristics and abundance trends. The stock was dominated by age groups 1 and 2, not exceeding age group 4. The sardine stock in this area was assessed through an Integrated Catch-at-Age model which implements a separable Virtual Population Analysis on catch at age data with weighted tuning indices. Sardine landings data derived from the commercial purse seine fishery over the period 2000-2008 were combined with the age structure of the stock as resulted from fisheries independent acoustic surveys. Sensitivity analysis of the impact of natural mortality values on stock assessment results was applied. Additionally forecast of the sardine population parameters and catches under different exploitation scenarios was implemented in a medium term basis. Results indicated that the North Aegean Sea sardine stock is considered fully exploited with the fishery operating close but over the empirical exploitation level for sustainability. Finally, the status of the sardine stock in N. Aegean Sea is discussed in relation to the sardine stocks from the western and the central Mediterranean basin.

[Preventive practices of the residents over 25 years of age in Monterrey and its metropolitan area (Mexico)].

Science.gov (United States)

Garza-Elizondo, M F; Villarreal-Ríos, E; Salinas-Martínez, A M; Núñez-Rocha, G M

2004-01-01

Chronic and degenerative disorders are the leading causes of morbidity-mortality in Mexico, as a result of which the Health Sector has implemented preventive and suitable detection measures. The use of the health services is a dynamic behavior on the part of the population. In order for people to use these preventive measures, the barriers to accessing these services must be lessened. Hence, the objective of this study was that of ascertaining the use of the services for the detection of diabetes mellitus, high blood pressure, cervical-uterine and breast cancer and tetanus and diphtheria toxoide vaccinations. The sample size was that of 254 individuals age 25 and over living in Monterrey or in the greater Monterrey metropolitan area. Those having employed preventive measures during the year immediately prior to the study were taken into account with regard to the use of preventive measures. The analysis consisted of descriptive statistics and bivariate analysis. Over 60% of the population was female, the average age being 42.3 + 14 years of age, three fourths of the population being on the social security rolls. A total 37% mentioned having undergone the diabetes test, and 44.5 the test for high blood pressure, while 31.1% had been vaccinated with the tetanus and diphtheria toxoide. Regarding specifically female checkups, 34.3% of all females had undergone the corresponding cervical-uterine cancer test, 29.5% having been screened for breast cancer. No relationship was found to exist between the use of measures and family histories and the perception of the importance of the checks. The use of preventive measures fall below some international standards. Individuals exposed to the risk must be sought in order to fittingly detect any chronic disorder.

Sardine (Sardina pilchardus) larval dispersal in the Iberian upwelling system, using coupled biophysical techniques

Science.gov (United States)

Santos, A. M. P.; Nieblas, A.-E.; Verley, P.; Teles-Machado, A.; Bonhommeau, S.; Lett, C.; Garrido, S.; Peliz, A.

2018-03-01

The European sardine (Sardina pilchardus) is the most important small pelagic fishery of the Western Iberia Upwelling Ecosystem (WIUE). Recently, recruitment of this species has declined due to changing environmental conditions. Furthermore, controversies exist regarding its population structure with barriers thought to exist between the Atlantic-Iberian Peninsula, Northern Africa, and the Mediterranean. Few studies have investigated the transport and dispersal of sardine eggs and larvae off Iberia and the subsequent impact on larval recruitment variability. Here, we examine these issues using a Regional Ocean Modeling System climatology (1989-2008) coupled to the Lagrangian transport model, Ichthyop. Using biological parameters from the literature, we conduct simulations that investigate the effects of spawning patchiness, diel vertical migration behaviors, and egg buoyancy on the transport and recruitment of virtual sardine ichthyoplankton on the continental shelf. We find that release area, release depth, and month of release all significantly affect recruitment. Patchiness has no effect and diel vertical migration causes slightly lower recruitment. Egg buoyancy effects are significant and act similarly to depth of release. As with other studies, we find that recruitment peaks vary by latitude, explained here by the seasonal variability of offshore transport. We find weak, continuous alongshore transport between release areas, though a large proportion of simulated ichthyoplankton transport north to the Cantabrian coast (up to 27%). We also show low level transport into Morocco (up to 1%) and the Mediterranean (up to 8%). The high proportion of local retention and low but consistent alongshore transport supports the idea of a series of metapopulations along this coast.

PIXE analysis of airborne particulate matter from Monterrey, Mexico. A first survey

International Nuclear Information System (INIS)

Aldape, F.; Flores M, J.; Diaz, R.V.; Hernandez-Mendez, B.; Montoya Z, J.M.; Blanco, E.E.; Fuentes, A.F.; Torres-Martinez, L.M.

1999-01-01

A first survey of elemental contents in airborne particulate matter from Monterrey, Nuevo Leon, Mexico, was performed using PIXE. This second largest industrial city is located 715 km north of Mexico City, and counts with a population of nearly three million inhabitants in its conurbation. Air pollution in the place comes from a great variety of industries ranging from iron smelters to furniture manufacturing, as well as from fuel combustion in vehicles and industries. This study presents results of elemental contents in airborne particulate matter in two particle size fractions: PM 2.5 and PM 15 . The samples were collected during five weeks on working days, Monday-Friday, from 9 December 1996 to 14 January 1997. Two samples a day were collected, 12 h each, night-time and day-time. These first results show local pollution as typical from a large urban area in conjunction with an active industry. Thirteen elements were consistently detected in most of the samples and some episodes due to both industrial and human activities were identified. A general discussion about the results obtained is presented

[Metabolic syndrome prevalence in teenagers of Monterrey, Nuevo Leon].

Science.gov (United States)

Cárdenas-Villareal, Velia Margarita; López Alvarenga, Juan C; Bastarrachea, Raúl A; Rizo-Baeza, María Mercedes; Cortés-Castell, Ernesto

2010-01-01

To determine the prevalence of the metabolic syndrome (SM) and its components in teenagers from the metropolitan area of Monterrey Nuevo Leon, Mexico (AMM). A transversal research involving 254 teenage students from 10 to 19 years old. To research investigated their personal characteristics, anthropometrics measures, glucose, triglycerides and cholesterol HDL. The SM definition was adapted from the one suggested by the National Cholesterol Education Program-Adult Treatment Panel III (NCEP-ATPIII). The SM prevalence was 9.4 % (IC95%: 5.8 to 13.0), there was not a difference between the sexes. The prevalence among each SM component was: 24.4% for high triglycerides, 20.1% for abdominal obesity, 19.0% for cholesterol of lipoproteins of a high density (HDL-c) low, 11.4 % for high glucose and for high blood pressure (9.1% diastolic and 5.9% systolic). The prevalent SM phenotypes were corporal mass (IMC) (OR = 4.93, IC95%: 2.26, 10.73) and the IMC interaction of the teenager with a family history of obesity (OR = 1.37, IC95%: 1.0, 1.87). It was observed that those with a family history of diabetes type 2 only experienced a marginal effect. The SM prevalence in teenagers from AMM is high it was an alarming situation if it continues into adulthood. The existence of obesity in relatives of the first and second grade, altogether with teenager IMC are important prediction factors of SM.

La pesca de sardina, Sardinella aurita (Teleostei: Clupeidae asociada con la variabilidad ambiental del ecosistema de surgencia costera de Nueva Esparta, Venezuela

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Leo W González

2007-03-01

Full Text Available Se comparó la pesca de sardina (Sardinella aurita con algunos parámetros climáticos y meteorológicos del ecosistema de surgencia costera de El Morro, Nueva Esparta, Venezuela. Para el período 1996-2000, se aplicaron los modelos de regresión lineal simple y múltiple a los datos de captura en función de la velocidad del viento, temperatura superficial del mar, temperatura del aire y pluviosidad. Hubo una correlación positiva de la captura con la velocidad del viento, y una negativa con temperatura superficial del mar, temperatura del aire y pluviosidad. El modelo de regresión múltiple con intercepto mostró un ajuste bajo, por tal razón se aplicó un modelo de regresión sin intercepto, el cual mejoró significativamente el ajuste. También se aplicó el método de selección de variables "hacia adelante", encontrándose que las variables independientes viento y temperatura del aire guardan relación significativa con la captura de sardina a tiempo real (pAssociation of sardine fishery, Sardinella aurita (Teleostei: Clupeidae and environmental variability of the coastal upwelling ecosystem of Nueva Esparta, Venezuela. The present research is an analysis of Spanish sardine fishing (Sardinella aurita associated with some climatic and meteorologic parameters of the ecosystem from El Morro Nueva Esparta, Venezuela. The catch and environmental data from the area were taken in the period 1996-2000. Catch data as a function of wind speed, sea surface temperature, air temperature and rain were analyzed by means of simple lineal regression and multiple models. We found a positive correlation of catch with wind speed, and a negative correlation with sea surface temperature, air temperature, and rain. The multiple regression model with intercept had a poor fit, therefore, we made a model without intercept, which improve greatly the fit. A selection of the variables using the forward procedure verified that the independent variables "wind speed

Registro actual del jaguar Panthera onca (Carnivora: Felidae) en el Parque Nacional Cumbres de Monterrey, Nuevo León, México

OpenAIRE

Carrera-Treviño, Rogelio; Cavazos, Juan J.; Briones-Salas, Miguel; Lira-Torres, Iván

2016-01-01

Presentamos los primeros registros de jaguar Panthera onca (Carnivora: Felidae) para el Parque Nacional Cumbres de Monterrey, Nuevo León, México. Entre los años 2013 a 2015 se colocaron cámaras trampa en los bosques templados del parque. Se obtuvieron 15 fotografías y 7 vídeos de varios individuos de la especie, que evidencian la presencia de una población dentro del parque nacional y que representa la población residente de jaguares más al norte de su área de distribución, por la vertiente d...

Biochemical and physiological modifications in tissues of Sardina pilchardus: spatial and temporal patterns as a baseline for biomonitoring studies

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Bruno Silva Nunes

2015-02-01

Full Text Available Sardina pilchardus is a marine species common in the North Atlantic Ocean, and is subjected to diffuse anthropogenic chemical contamination and seasonal fluctuations in biotic and abiotic parameters that may alter its physiology and condition. Biological material is easily available through commercial fisheries, which could facilitate its use as a bioindicator species. The aim of the present work was to address its potential inclusion in biomonitoring studies, considering a combinatory approach through the use of enzymatic biomarkers and somatic indices, by assessing spatial and temporal patterns in a metapopulation along the west coast of Portugal. Our results showed significant variability of the biochemical and physiological profile of the fish, mainly concordant between sampling sites. Large differences for most markers were found across periods of the year, showing the importance of seasonality, which was mostly related to the reproductive cycle. Hence, environmental scientists should acknowledge seasonality as a strong driving force for physiological adaptations, influencing biochemical markers that are normally used to identify effects of chemical contamination. The here-obtained set of data suggests that S. pilchardus may be successfully included in oceanic biomonitoring studies, when one considers that the contribution of seasonal factors may exceed the influence of eventual anthropogenic contamination.

Alimentos saludables: la percepción de los jóvenes adolescentes en Monterrey, Nuevo León

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Elías Alvarado Lagunas

2013-01-01

Full Text Available En este artículo se presentan los resultados de la caracterización del consumo de alimentos saludables en Monterrey, obtenidos mediante la aplicación de una encuesta y un Análisis Factorial. Este último permite explicar las correlaciones entre las variables observadas, en términos de un número menor de variables no observadas llamadas factores. El objetivo fue conocer la percepción de los adolescentes sobre el riesgo a la salud que existe en torno a su alimentación cotidiana. Uno de los principales resultados de la investigación es que los adolescentes poseen una percepción poco clara de lo que sería una alimentación saludable.

Redes sociales y vejez: apoyos formales e informales en el área metropolitana de Monterrey

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Hilda García

1999-01-01

Full Text Available A través de una encuesta a 461 individuos de 60 años y más residentes en el área metropolitana de Monterrey se exploró la amplitud y el carácter de la relación de los viejos con las redes de apoyo formales e informales, así como los determinantes de dicha relación. En principio, los datos sugieren un panorama de alta dependencia económica y social de esta población derivado de ingresos y condiciones de salud precarias. Por un lado, se observó que el sistema institucional facilitó principalmente el acceso a servicios de salud y pensiones, aunque la cobertura de este último servicio fue más restringida y diferenciada. Por otra parte, el estudio mostró que la familia, pero especialmente los hijos, desempeña un rol central para la subsistencia de los viejos, transfiriendo bienes y servicios no disponibles en el sistema formal de soporte.

Cryptococcus spp. isolation from excreta of pigeons (Columba livia) in and around Monterrey, Mexico.

Science.gov (United States)

Canónico-González, Yolanda; Adame-Rodríguez, Juan Manuel; Mercado-Hernández, Roberto; Aréchiga-Carvajal, Elva Teresa

2013-01-01

The presence of Cryptococcus spp. has been reported in Mexico's capital city; however, to our knowledge there are no reports of its presence in the state of Nuevo León located in northeast Mexico. This is presumed to be because the hot and dry climate in this region does not favor cryptococcal proliferation. This study confirmed the presence of C. neoformans and C. albidus in 20% (10/50) of randomly selected fecal samples of pigeons (Columba livia) in the Monterrey metropolitan area. The presence of this yeast in the state of Nuevo León is proof of its adaptation to the typically hot climate of the area and is consistent with recent reviews of cryptococcosis cases in several local hospitals. The two species were identified and characterized through microbiological tests and molecular identification by DNA extraction and PCR amplification of highly conserved 18S ribosomal DNA using ITS1 and ITS2 as target regions. The PCR products were sequenced and compared with those reported in GenBank.

Redes sociales y Áreas Naturales Protegidas en la Zona Metropolitana de Monterrey, Nuevo León

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Gabriela de la Mora-de la Mora

2015-01-01

Full Text Available A partir del análisis de las dinámicas de interacción entre actores sociales clave, vinculados a la gestión de las áreas naturales protegidas y a la protección de los servicios ambientales hidrológicos en la Zona Metropolitana de Monterrey ( zmm , Nuevo León, se analizan las acciones que se llevan a cabo para lograr los objetivos de conservación. Se utiliza el análisis de redes para comprender la estructura y densidad de las relaciones sociales establecidas y su influencia en la definición de la gobernanza ambiental actual en la región, lo que permite destacar la exis - tencia de alianzas estratégicas en materia de conservación y al mismo tiempo la falta de comunicación en otros sectores.

A comparative approach to the economic participation of older adults: the case of the city of Monterrey and Mexico State

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Raúl E. López

2012-01-01

Full Text Available The issue of economic participation of over 65 years in Mexico has attracted particular interest due mainly to high rates of participation that holds this age group. Most national and regional research agrees that the social protection system is a key determinant for the decision to participate or not in the labor market by older adults. However, the comparison of different scenarios is not yet widely used practice in this area and do not know deeply the dynamics of this phenomenon. Using two different data sources, this paper intends to compare the employment status of older adults in the state of Mexico and Monterrey, with the ultimate aim of inquiring about the specifics of the phenomenon.

Effect of the Gamma Radiation and Temperature on Histamine Production, Lipid Peroxidation and Antioxidant Parameters in Sardine (Sardina Pilchardus)

International Nuclear Information System (INIS)

Maltar-Strmecki, N.; Aladrovic, J.; Dzaja, P.; Ljubic-Beer, B.; Laskaj, R.

2013-01-01

Radiation processing of fish is recognized as a safe and effective method for reducing microorganisms and viruses as well for inactivating pathogens among the existing technologies for preservation. Safety and hygienic quality is directly related to the duration between when the fish is caught and when it reaches the end consumer and depends upon conditions how the sardine is handled and upon which conditions. As sardine (Sardina pilchardus Walbaum, 1792) is pelagric fish widely distributed in the Adriatic Sea and one of the most commercially important fish species in the fisheries of all countries located along the coast of the Adriatic Sea in the present study, the effects of gamma irradiation on the histamine production, lipid peroxidation and antioxidant parameters in sardine during the storage at two different temperatures (4 and 30 degrees of Celsius) were investigated. The results indicate that histamine concentration was reduced by gamma irradiation and that the safe consumption can be prolonged for both temperatures of storage. However, irradiation treatment induced oxidative damage, as evidenced by changes in levels of lipid peroxidation and radical kinetic rate detected by EPR (electron paramagnetic resonance) spectroscopy. These results suggest that gamma radiation undoubtedly induces antioxidant defence system in sardine fish. However, further research is necessary to elucidate the precise role that the antioxidant system plays under the influence of gamma radiation and temperature.(author)

Spatial distribution and species composition of small pelagic fishes in the Gulf of California

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Edgar Lanz

2008-06-01

regiones, incluyen áreas arbitrarias y homogéneas sobre las cuales se realiza estadística básica o inferencias relacionadas con la distribución y la abundancia de estos recursos. El presente trabajo describe una metodología para la regionalización y el análisis de la actividad pesquera de pelágicos menores en el Golfo de California basado en los patrones espaciales de la información de lances y capturas utilizando herramientas de Sistemas de Información Geográfica (SIG. La información pesquera, con atributos espaciales, provino de bitácoras de pesca para el periodo comprendido de octubre 2002 a junio 2007. Los datos de lances y capturas fueron transformados a un Índice de Región Ponderada (WRI utilizando operadores de lógica difusa. El WRI reveló centros de actividad pesquera caracterizados por áreas con los valores más altos de WRI y se obtuvo un orden jerárquico para denotar la importancia relativa de cada región, siendo las regiones de Guaymas, el Desemboque de Caborca, Isla Patos y Bahía San Rafael, los más prominentes. El análisis de la frecuencia relativa de la composición de especies mostró que la sardina Monterrey tuvo una abundancia relativa mayor al 80% en la región de las Grandes Islas y permaneció como la especie más importante en las regiones del alto golfo, mientras que en la parte central del golfo las abundancias de la sardina Monterrey y la ancho-veta norteña estuvieron más equilibradas. La abundancia relativa de la macarela fue significativamente mayor en la región de la Isla Patos, respecto a cualquier otra región. La región de Guaymas mostró la mayor composición relativa de anchoveta norteña, en contraste con los más bajos valores de sardina Monterrey. El Desemboque de Caborca mostró la mayor homogeneidad en la composición relativa de especies. Estos resultados provienen de datos in situ, mientras que los resultados previamente reportados provienen de estadísticas de lances por puerto. En consecuencia, el

The impact of enterocin AS-48 on the shelf-life and safety of sardines (Sardina pilchardus) under different storage conditions.

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Ananou, S; Zentar, H; Martínez-Bueno, M; Gálvez, A; Maqueda, M; Valdivia, E

2014-12-01

The purpose of this study was to determine the effect of enterocin AS-48, packaged under normal atmosphere (NA), vacuum (VP) or modified atmosphere (MAP) on the shelf life and safety of fresh sardines (Sardina pilchardus) stored at 5 °C. We studied the effect of these hurdles, alone or combined, on the relevant autochthonous bacterial populations. Total volatile basic nitrogen (TVB-N) content was used as indicative of freshness. Levels of biogenic amines cadaverine, putrescine, tyramine, and histamine were also determined. The application of AS-48 did not reduce the mesophilic, psychrotrophic, or Gram negative bacteria viable cell counts under any of the storage conditions tested. AS-48 did cause significant reductions in viable staphylococci counts, especially under VP. In sardines under NA treated with AS-48, the populations of histamine- and tyramine-forming total and lactic acid bacteria (LAB) showed no significant reductions. MAP or VP with AS-48 allowed reductions (significant at some storage times) in histamine- and tyramine-forming LAB. The TVB-N content was also reduced under normal atmosphere and, especially, in sardines stored under MAP. The most interesting results are those concerning the decrease (by several fold) in the levels of the biogenic amines cadaverine, putrescine, tyramine, and histamine determined after treatment with AS-48. Copyright © 2014 Elsevier Ltd. All rights reserved.

Reconstruction of trophic pathways between plankton and the North Iberian sardine (Sardina pilchardus using stable isotopes

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Antonio Bode

2004-03-01

Full Text Available Feeding on phyto- and zooplankton by juvenile (< 1 year old and adult sardines (Sardina pilchardus was inferred from analyses of natural abundance of stable carbon and nitrogen isotopes in samples from the northwestern Iberian Peninsula (Spain collected at the beginning of the upwelling season and peak spawning period of sardine. Plankton samples were fractionated through nets of 20, 200, 500, 1000 and 2000 ?m mesh-size and the muscle protein of individual sardines was isolated before isotopic determinations. Up to six planktonic components and two sardine feeding types were identified from the modes in the frequency distributions of isotope abundance values. Also, the most probable pathways for carbon and nitrogen flows between compartments were analysed. The resulting food web revealed a relatively large degree of omnivory, both in plankton and sardine components, which confirms that complex trophic interactions could also occur in pelagic upwelling ecosystems. Young sardines had isotope abundance values clustered around a single mode in the frequency distribution, while adult sardines displayed two main modes. These modes are interpreted as representative of two extreme feeding types: one related to the individual capture of zooplankton prey and the other to unselective filter-feeding. Although both types of feeding could include micro- (20-200 ?m and mesozooplankton (200-2000 ?m prey, phytoplankton appears to be ingested mainly by filter-feeding. However, even adult sardines must be mainly zoophagous to achieve the observed isotopic abundance values, taking into account current assumptions on stable isotope enrichment through trophic levels. From the differences in the resulting pathways using either carbon or nitrogen isotopes, we interpreted that sardines acquire most of the protein nitrogen from zooplankton while a substantial fraction of their carbon would derive from phytoplankton. These interpretations agree with the information

Las nuevas casas de la Inquisición en Santiago de Compostela: del palacio de Monterrey a la sede de Porta da Mámoa

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Pita Galán, Paula

2012-12-01

Full Text Available In 1726 the Inquisition decided to rebuild its building: the Palace of Monterrey, in Santiago de Compostela. This intervention should have been made according to a project of Fernando de Casas but caused the moving of the Santo Oficio to a new building known as Casa Grande del Horreo or de Calo, in front of Porta da Mámoa. Thanks to unknown documents and the collection of plates of the Inquisition conserved at Archivo Histórico Universitario de Santiago, we will analized the circumstances that caused the change of building as well as propose an hypothetical reconstruction of the Casa de Calo from the testimonies of those who knew it before of the deep removal, directed by the master mason of San Martín Pinario fray Francisco Velasco that transform it into a Palace of the Inquisition.

En 1726 el Tribunal de la Inquisición se propuso remodelar sus instalaciones en el Palacio de Monterrey, en Santiago de Compostela. Dicha intervención, que debía realizarse según un proyecto de Fernando de Casas, determinó el traslado del Santo Oficio a un nuevo inmueble: la Casa Grande del Hórreo o de Calo, frente a la Porta da Mámoa. A partir de documentación inédita y del estudio de la colección de planos de la Inquisición que conserva el Archivo Histórico Universitario de Santiago, analizaremos las circunstancias que motivaron el cambio de sede, y reconstruiremos la Casa de Calo según los testimonios de quienes la conocieron antes de que una profunda remoción dirigida por fray Francisco Velasco, maestro de obras de San Martín Pinario, la transformase en un palacio de la Inquisición. [gl] En 1726 o Tribunal da Inquisición propúxose remodelar a súas instalacións no Pazo de Monterrey, en Santiago de Compostela. Dita intervención, que debíase realizar seguindo un proxecto de Fernando de Casas, determinou o traslado do Santo Ofi cio a un novo inmoble: a Casa Grande do Hórreo ou de Calo, frente a Porta da Mámoa. A partir de

Population data of 24 STRs in Mexican-Mestizo population from Monterrey, Nuevo Leon (Northeast, Mexico) based on Powerplex(®) Fusion and GlobalFiler(®) kits.

Science.gov (United States)

Ramos-González, Benito; Aguilar-Velázquez, José Alonso; Chávez-Briones, María de Lourdes; Delgado-Chavarría, Juan Ramón; Alfaro-Lopez, Elizabeth; Rangel-Villalobos, Héctor

2016-03-01

The STR loci included into new commercial human identification kits compels geneticists estimating forensic parameters for interpretation purposes in forensic casework. Therefore, we studied for the first time in Mexico the GlobalFiler(®) and Powerplex(®) Fusion systems in 326 and 682 unrelated individuals, respectively. These individuals are resident of the Monterrey City of the Nuevo Leon state (Northeast, Mexico). Population data from 23 autosomal STRs and the Y-STR locus DYS391 are reported and compared against available STR data from American ethnic groups and the unique Mexican population studied with Powerplex(®) Fusion. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

Consumo con conciencia social y ecológica en nueve municipios del área metropolitana de Monterrey

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José Raúl Luyando Cuevas

2017-01-01

Full Text Available Objetivo: realizar un estudio sobre el tipo de consumo que se practica en el Área Metropolitana de Monterrey, Nuevo León, México. Con el propósito de saber si éste se efectúa de forma tal que los individuos pudieran estar considerando su impacto sobre el medio ambiente. Metodología: se efectuó una encuesta a 613 personas del lugar y los resultados fueron analizados con métodos estadísticos. Resultados: se encontró que aunque la gente señala conocer conceptos relacionados a la sostenibilidad, le dan poca importancia al perjuicio que su demanda de bienes y servicios causa al medio ambiente. Limitaciones: por cuestiones presupuestarias, haber realizado un muestreo que aunque representativo no fue aleatorio. Conclusiones: aunque los individuos en su mayoría señalan conocer conceptos relacionados a la sostenibilidad, podemos advertir que más que razonados estos son intuitivos y, en general, aleccionados desde los medios de comunicación.

Trends in spatio-temporal distribution of Peruvian anchovy and other small pelagic fish biomass from 1966-2009 Tendencias espacio-temporales en la distribución de la biomasa de anchoveta peruana y de otros peces pelágicos pequenos entre 1966 y 2009

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Mariano Gutiérrez

2012-09-01

de pequenos peces pelágicos de la región norte del Sistema de la Corriente de Humboldt (NHCS son el producto de la variación de forzantes ambientales en diferentes escalas de tiempo y espacio que influyen entre el ecosistema 'frío' costero y el oceánico 'cálido'. La información para estudiar estas fluctuaciones provienen mayormente de las pesquerías, y muestran que la anchoveta (Engraulis ringens incrementa su abundancia cuando la de sardina (Sardinops sagax declina y viceversa. Sin embargo, utilizando datos acústicos de biomasa latitudinal se muestra que otras especies como la caballa (Scomber japonicus y el jurel (Trachurus murphyi también siguen la misma tendencia opuesta a anchoveta, lo que en principio indica que los datos pesqueros disponibles no indican la verdadera dimensión del balance de abundancia entre especies. Utilizando diagramas de Hovmoller se analizan los cambios en la biomasa acústica latitudinal, capturas e influencia de eventos El Nino ocurridos entre 1966 y 2009 con el objetivo de describir: 1 cómo el patrón de distribución decadal de anchoveta se movió de sur a norte desde la década de 1960, 2 cómo se han producido cambios concomitantes en la abundancia latitudinal de otras especies tales como sardina, caballa y jurel antes, durante y después de eventos El Nino, y 3 cuál fue el efecto general de la sucesión de eventos El Nino sobre todas estas especies. Se concluye que: a cada evento El Nino ha tenido un efecto en la expansión o contracción de la distribución de especies pelágicas, con diferente gradiente latitudinal, y b El Nino 1997-98 no disparó sino aceleró la fase declinante de la abundancia de sardina, caballa y jurel al reducirse el tamano de su hábitat ideal debido a una expansión del hábitat costero que presentó además un acercamiento a la superficie del límite superior de la Zona Mínima de Oxígeno (MOZ. Las observaciones logradas con datos acústicos podrían ser tomadas en consideración para el

Social and clinical predictors of drug-resistant tuberculosis in a public hospital, Monterrey, Mexico.

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Young, Bonnie N; Burgos, Marcos; Handal, Alexis J; Baker, Jack; Rendón, Adrian; Rosas-Taraco, Adrian; Long, Jeffrey; Hunley, Keith

2014-10-01

Drug-resistant tuberculosis (DRTB) is steadily increasing in Mexico, but little is known of patient risk factors in the Mexico-United States border region. This preliminary case-control study included 95 patients with active pulmonary TB with drug susceptibility results attending the José E. González University Hospital in the urban hub of Nuevo León-the Monterrey Metropolitan Area. We report potential social and clinical risk factors of DRTB among this hospital-based sample. We collected data through face-to-face interviews and medical record reviews from 25 cases with DRTB and 70 drug-sensitive controls. DNA was collected to assess an effect of genetic ancestry on DRTB by using a panel of 291,917 genomic markers. We calculated crude and multivariate logistic regression. After adjusting for potential confounding factors, we found that prior TB treatment (odds ratio, 4.5; 95% confidence interval, 0.9-21.1) and use of crack cocaine (odds ratio, 4.6; 95% confidence interval, 1.1-18.7) were associated with DRTB. No other variables, including genetic ancestry and comorbidities, were predictive. Health care providers may benefit from recognizing predictors of DRTB in regions where routine drug susceptibility testing is limited. Prior TB treatment and illicit drug use, specifically crack cocaine, may be important risk factors for DRTB in this region. Copyright © 2014 Elsevier Inc. All rights reserved.

Evaluating fishermen's conservation attitudes and local ecological knowledge of the European sardine (Sardina pilchardus), Peniche, Portugal.

Science.gov (United States)

Braga, Heitor O; Azeiteiro, Ulisses M; Oliveira, Henrique M F; Pardal, Miguel A

2017-05-05

European sardines are an important fishing resource in the North Atlantic. Recognized for its great commercial and economic value in southern Europe, this resource currently has low stock indices. From this perspective, fishers' local ecological knowledge (LEK) is appreciated as an auxiliary tool in the management of sardines in this region. Our goal is to evaluate the LEK and attitudes towards the conservation of Sardina pilchardus in the typical fishing village of Peniche, Portugal. From June to September 2016, we carried out 87 semi-structured interviews. The four main points of the interviews were interviewee profile, fishing structure, fishermen's LEK and attitudes towards sardine conservation. The interviews were qualitatively and quantitatively analyzed using a 3-point Likert scale. An LEK index and an attitude index were generated. Comparison analyses and correlations were made between the indices and variables of the interviewee profile and the fishing structure. The mean LEK index was 0.55 and was classified as moderate. The attitudes index in relation to conservation was 0.76 and was classified as positive. This index had a positive and significant correlation with the LEK index and a significant negative correlation with the fishermen's age. When the LEK index was compared with the educational level, significant differences were observed only between class A and class C. The result showed that the differences in the attitudes index were statistically significant when the three educational classes were compared. The fishermen of Peniche in Portugal present moderate informal knowledge about the biology and ecology of sardines. Attitudes towards conservation were predominantly positive. Fishermen with greater LEK, with a higher educational level and at a younger age presented more positive attitudes in relation to environmental conservation issues in the present case of the sardine population. The LEK is not necessarily related to the educational level of

Estructura del proceso de decision de compra en los jovenes universitarios en equipos de telefonia celular: caso de estudio poblacion universitaria en Monterrey Nuevo Leon.

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Francisco Torres

2010-01-01

Full Text Available Influences among college students such as social situational frame, marketing efforts and purchase decision process of cellular phones is the main objectives in this research, which is oriented to analyze the preferences and attitude in shown in the purchase of cellular telephones. The results allows interesting information on how college students consider which is the most innovating manufacturer in cellular telephony, besides how they rank their best provider/ carrier of cellular services and also how they shown their attitude towards the communication channels appropriate for receiving news about technology innovation and sale promotions. The research project was developed among college students from nine universities in the Metropolitan Area of Monterrey (AMM.

A Modified Behavior Risk Factor Surveillance System to Assess Diabetes Self-management Behaviors and Diabetes Care in Monterrey Mexico: A Cross-sectional Study

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Francisco González-Salazar

2017-05-01

Full Text Available Type 2 diabetes mellitus (T2DM is one of the leading causes of death from worldwide non-communicable diseases. The prevalence of diabetes in the Mexico (MX–United States border states exceeds the national rate in both countries. The economic burden of diabetes, due to decreased productivity, disability, and medical costs, is staggering and increases significantly when T2DM-related complications occur. The purpose of this study was to use a modified behavioral risk factor surveillance system (BRFSS to describe the T2DM self-management behaviors, diabetes care, and health perception of a convenience sample of adults with T2DM in Monterrey, MX. This cross-sectional study design, with convenience sampling, was conducted with a convenience sample (n = 351 of adults in the metropolitan area of Monterrey, MX who self-reported a diagnosis of T2DM. Potential participants were recruited from local supermarkets. Twenty-six diabetes and health-related items were selected from the BRFSS and administered in face-to-face interviews by trained data collectors. Data analysis was conducted using descriptive statistics. The mean age was 47 years, and the mean length of time with T2DM was 12 years. The majority was taking oral medication and 34% required insulin. Daily self-monitoring of feet was performed by 56% of the participants; however, only 8.8% engaged in blood glucose self-monitoring. The mean number of health-care provider visits was 9.09 per year, and glycated hemoglobin level (HbA1c was assessed 2.6 times per year. Finally, only 40.5% of the participants recalled having a dilated eye exam. We conclude the modified BRFSS survey administered in a face-to-face interview format is an appropriate tool for assessing engagement in T2DM self-management behaviors, diabetes care, and health perception. Extension of the use of this survey in a more rigorous design with a larger scale survey is encouraged.

Recepción de estereotipos de la serie norteamericana Lost entre jóvenes que habitan en Monterrey, México

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Beatriz Elena Inzunza Acedo

2013-01-01

Full Text Available El objetivo del estudio consistió en el análisis de recepción de los personajes de la serie estadounidense Lost, cuyas representaciones variaron entre norteamericanos, latinos, europeos, coreanos, rusos, árabes, australianos y africanos; hombres y mujeres; niños, jóvenes, adultos y ancianos. Se llevaron a cabo cinco grupos de discusión con 29 jóvenes que habitaban en Monterrey, México. Para la interpretación de resultados, se utilizó el modelo de Palmer y Hafen, en la versión ampliada de Inzunza Acedo, y los tipos de empatía de Igartua y Muñiz. Las conclusiones apuntan a una tendencia de aceptación o rechazo de tipo ingenuo de los personajes, puesto que no hay una reflexión crítica respecto a los estereotipos, debido al apego emocional por parte de los espectadores o a elementos humorísticos del guion.

Optimization of a chemical method for skinning of sardines (Sardina pilchardus during canning processing

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Manuela Vaz Velho

2014-06-01

Full Text Available Most of sardine (Sardina pilchardus catches is used for canning purposes. The most common product presentation is a beheaded sardine with skin and bones packed in a tin can. Canned sardines can also be presented skinless and boneless. For this last type of product, after beheading and evisceration, sardines are placed in trays, cooked and then skinned by hand, one by one, and placed in the tins, a process involving high labour costs. The aim of this work was to develop a chemical process for peeling raw sardines and its subsequent application in a canning industry processing line just after the beheading and evisceration step and before cooking. Potassium hydroxide treatments (pellets a.r. 85% KOH were applied at concentrations of 2, 3 and 4% (v/v, distilled water. Frozen sardines were beheaded and eviscerated after thawing and immersed in the different potassium hydroxide solutions at 93ºC (pH respectively 13, 13 and 13.02 for 3 min and further washed with distilled water at 100°C. In this first set of experiments, fat sardines were used (average of 9.86% of fat, w/w. The best performance, with respect to skin removal, was achieved with the 2% potassium hydroxide immersion (pH 13. With this treatment the skin was totally removed after immersion. With the other tested concentrations portions of skin were always visible and in some cases changes in texture with breakdown of muscle structure and changes of colour occurred. It was decided to perform a second set of experiments using the 2% KOH treatment, but this time applied to low fat sardines (average of 4.77% of fat, w/w, following the same subsequent procedures. The results showed that the lower fat sardines are more prone to surface changes of colour and major muscle breaks than fat sardines after the potassium hydroxide treatment. In the canning industry for this type of product (skinless and boneless only fat sardines are used to assure the total removal of skin. This treatment of 2% KOH

Biomasa acústica y distribución del jurel Trachurus murphyien el Perú

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Marceliano Segura

2013-10-01

Full Text Available Se analizan los resultados de las evaluaciones hidroacústicas del recurso jurel Trachurus murphyi Nichols 1920 realizadas en aguas peruanas entre 1983 – 2012. Desde 1983 se incluyó al T. murphyicomo especie de estudio durante los cruceros de evaluación de recursos pelágicos ejecutados por el Instituto del Mar del Perú. Debido al énfasis en la estimación de biomasa de la anchoveta Engraulis ringens y de la sardina Sardinops sagax cuando esta última es más abundante, los cruceros se llevan a cabo durante el verano austral y las áreas de evaluación están circunscritas a las zonas más costeras hasta 100 mn, con sólo algunas exploraciones en otras estaciones y hasta 200 millas. El máximo valor de biomasa de 8.51 millones de toneladas de T. murphyien aguas peruanas estimado con las evaluaciones hidroacústicas fue encontrado durante el crucero realizado en otoño (marzo-mayo de 1983. En los años siguientes los estimados de biomasa acústica fluctuaron entre 180 mil toneladas en 1985 y otro máximo de 8.47 millones de toneladas en 1993, para luego disminuir gradualmente hasta un mínimo de 1239 t en 2010, con una ligera recuperación en los años 2011 y 2012. El área de distribución de T. murphyifue muy fluctuante en todo el periodo observado.

Trayectorias recientes de la migración interna en la Zona Metropolitana de Monterrey: características, orígenes y destinos a nivel municipal, 2010

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Elmyra Ybáñez Zepeda

2017-01-01

Full Text Available El Censo de Población y Vivienda del 2010 destacó a Nuevo León como la entidad con la mayor proporción de migración municipal en relación al total de su población (10.6%, superando inclusive al Estado de México y al Distrito Federal. El objetivo de este artículo consiste en analizar la dinámica migratoria reciente en la Zona Metropolitana de Monterrey a escala municipal. Los resultados remiten a tres hallazgos principales: los municipios de origen y destino indican un flujo del centro a la periferia; el patrón migratorio predominante es intrametropolitano; y el perfil sociodemográfico de los inmigrantes presenta diferencias por municipio.

Malignant neoplasms of the nasal cavity and paranasal sinuses: a series of 256 patients in Mexico City and Monterrey. Is air pollution the missing link?

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Calderón-Garcidueñas, L; Delgado, R; Calderón-Garcidueñas, A; Meneses, A; Ruiz, L M; De La Garza, J; Acuna, H; Villarreal-Calderón, A; Raab-Traub, N; Devlin, R

2000-04-01

Air pollution is a serious health problem in major cities in Mexico. The concentrations of monitored criteria pollutants have been above the US National Ambient Air Quality Standards for the last decade. To determine whether the number of primary malignant nasal and paranasal neoplasms has increased, we surveyed 256 such cases admitted to a major adult oncology hospital located in metropolitan Mexico City (MMC) for the period from 1976-1997 and to a tertiary hospital in Monterrey, an industrial city, for the period from 1993-1998. The clinical histories and histopathologic material were reviewed, and a brief clinical summary was written for each case. In the MMC hospital the number of newly diagnosed nasal and paranasal neoplasms per year for the period from 1976-1986 averaged 5.1, whereas for the next 11 years it increased to 12.5. The maximal increase was observed in 1995-1997, with an average of 20.3 new cases per year (P = 0.0006). The predominant neoplasms in these series were non-Hodgkin's lymphoma, squamous cell carcinoma, melanoma, adenocarcinoma, Schneiderian carcinoma, and nasopharyngeal carcinoma. In the Monterrey hospital a 2-fold increase in the numbers of newly diagnosed nasal and paranasal neoplasms was recorded between 1993 and 1998. The predominant MMC neoplasm in this series, namely nasal T-cell/natural killer cell non-Hodgkin's lymphoma, is potentially Epstein-Barr virus related. Nasal and paranasal malignant neoplasms are generally rare. Environmental causative factors include exposure in industries such as nickel refining, leather, and wood furniture manufacturing. Although epidemiologic studies have not addressed the relationship between outdoor air pollution and sinonasal malignant neoplasms, there is strong evidence for the nasal and paranasal carcinogenic effect of occupational aerosol complex chemical mixtures. General practitioners and ear, nose, and throat physicians working in highly polluted cities should be aware of the clinical

[Assessment of antibiotic use and impact of an intervention intended to modify the prescribing behavior in surgical prophylaxis in 6hospitals in the metropolitan area of Monterrey, Mexico].

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Palacios-Saucedo, Gerardo Del Carmen; de la Garza-Camargo, Mauricio; Briones-Lara, Evangelina; Carmona-González, Sandra; García-Cabello, Ricardo; Islas-Esparza, Luis Arturo; Saldaña-Flores, Gustavo; González-Cano, Juan Roberto; González-Ruvalcaba, Román; Valadez-Botello, Francisco Javier; Muñoz-Maldonado, Gerardo Enrique; Montero-Cantú, Carlos Alberto; Díaz-Ramos, Rita Delia; Solórzano-Santos, Fortino

Improper use of antibiotics increases antimicrobial resistance. Evaluate the use of antibiotics and the impact of an intervention designed to improve antibiotic prescription for surgical prophylaxis in 6 hospitals of Monterrey, Mexico. Design: A prospective multicenter survey and a pretest-postest experimental study. Phase 1: Survey to evaluate the use of antibiotics through an especially designed guide. Phase 2: Intervention designed to improve antibiotic prescription for surgical prophylaxis by the medical staff by using printed, audiovisual and electronic messages. Phase 3: Survey to evaluate the impact of the intervention. Frequencies, percentages, medians, ranges and X 2 test. Phase 1: We evaluated 358 surgical patients, 274 prophylactic antibiotic regimens. A total of 96% of antibiotics regimens began with inappropriate timing (290/302), 82.8% were inappropriate regimens (274/331), 77.7% were in inappropriate dosage (230/296), 86% of inadequate length (241/280), and in 17.4% restricted antibiotics were used (52/299). Phase 2: 9 sessions including 189 physicians (14 department chairs, 58 general practitioners and 117 residents). Phase 3: We evaluated 303 surgical patients, 218 prophylactic antibiotics regimens. Inappropriate treatment commencement was reduced to 84.1% (180/214) (P<0.001), inappropriate regimens to 75.3% (162/215) (P=0.03), inappropriate dosages to 51.2% (110/215) (P<0.001), and use of restricted antibiotics to 8.3% (18/215) (P=0.003). Inappropriate use of prophylactic antibiotics in surgery is a frequent problem in Monterrey. The intervention improved the antibiotic prescription for surgical prophylaxis by reducing inappropriate treatment commencement, regimens, dosages, and overuse of restricted antibiotics. It is necessary to strengthen strategies to improve the prescription of antibiotics in surgical prophylaxis. Copyright © 2016 Academia Mexicana de Cirugía A.C. Publicado por Masson Doyma México S.A. All rights reserved.

Challenge-based Learning: The Case of Sustainable Development Engineering at the Tecnologico de Monterrey, Mexico City Campus

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Jorge Membrillo-Hernández

2018-05-01

Full Text Available Recently, The Tecnologico de Monterrey (ITESM in Mexico has launched the Tec21 Educational Model. It is a flexible model in its curriculum that promotes student participation in challenging and interactive learning experiences. At the undergraduate level, one of the central scopes of this model is addressing challenges by the student, to develop disciplinary and cross-disciplinary skills. Two institutional strategies have been implemented to reach the ultimate goal of the ITESM, to work in all careers under the Challenge Based Learning (CBL system: the innovation week (i-week and the innovation semester (i-semester. Here we report on the results of four i-week and one i-semester models implemented in 2016. The i-semester was carried out in conjunction with a training partner, the worldwide leader Pharmaceutical Company Boehringer Ingelheim. Thirteen Sustainable Development Engineering career students were immersed for a 14 week period into the strategies to solve real-life challenges in order to develop the contents of four different courses. Six teachers of the academic institution and four engineers from the Boehringer plant served as mentors. Continuous evaluations were carried out throughout the abilities examination and partial and final examinations were performed by both experts, from the company and from the University.

Pollution biomarkers in the spiny lizard (Sceloporus spp.) from two suburban populations of Monterrey, Mexico.

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Aguilera, Carlos; del Pliego, Pamela González; Alfaro, Roberto Mendoza; Lazcano, David; Cruz, Julio

2012-11-01

Environmental pollution may severely impact reptile species in urbanized areas. The magnitude of the impact is analyzed in the present study using lizard tail tips for the quantitative evaluation of enzymatic biomarkers of pollution. Spiny lizards (Sceloporus serrifer and S. torquatus) were collected from two suburban localities in the Monterrey metropolitan area, Mexico: Chipinque Ecological Park, a natural protected area, and El Carmen Industrial Park (IP), a highly polluted site. Different enzymes were used as biomarkers including: acetylcholinesterase (AChE), butyrylcholinesterase (BChE), carboxylesterase (CaE), alkaline phosphatase (ALP), acid phosphatase (ACP), superoxide dismutase (SOD) and glutathione S-transferase (GST). The levels of AChE, BChE and ACP activity were not significantly different between localities. AChE and BChE, commonly used as biomarkers of neurotoxic polluting agents (e.g. organophosphate pesticides) do not appear to be affecting the populations from the study locations. In contrast, the levels of CaE, GST, ALP and SOD were significantly different between the localities. These biomarkers are regularly associated with oxidative stress and processes of detoxification, and generally indicate pollution caused by heavy metals or hydrocarbons, which are common in industrial sites. The data resulting from the analysis of these biomarkers indicate that these polluting agents are affecting the populations of Sceloporus in IP. The present work validates the possibility of conducting additional ecotoxicological studies using biomarkers in combination with a nondestructive sampling technique in species of spiny lizards that are abundant in many North America areas.

What can otolith shape analysis tell us about population structure of the European sardine, Sardina pilchardus, from Atlantic and Mediterranean waters?

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Jemaa, Sharif; Bacha, Mahmoud; Khalaf, Gaby; Dessailly, David; Rabhi, Khalef; Amara, Rachid

2015-02-01

The European sardine, Sardina pilchardus, exhibits a complex population structure, which has produced conflicting results in previous genetic studies. Despite its importance in the fisheries industry, stock delineation for management and conservation purposes is still a matter of debate throughout the distribution range of the species. This study examines whether otolith shapes are more efficient than genetic markers to detect population structure in pelagic species with large population sizes. Sardines were analyzed from 15 sampling localities in the Northeast Atlantic and Mediterranean Sea covering almost the whole distribution range of the species. A combination of otolith shape indices and elliptic Fourier descriptors was investigated by multivariate statistical procedures. Within the studied area, three distinct groups were identified with an overall correct classification of 77%. Group A: northern Mediterranean Sea and Gulf of Gabès; group B: Atlantic Morocco-south Alboran-Algero-provençal coasts; and group C: European Atlantic coast. The Almeria-Oran front and the Gibraltar strait are not an efficient barrier for sardine population separation as there seems to be exchanges between populations of the south-western Mediterranean Sea and those of the Moroccan Atlantic Ocean coast or Gulf of Cadiz. The results are discussed in relation to environmental conditions, oceanographic features, and physical barriers to dispersal in the study area, and compared with those obtained by previous genetic, morphometric, and meristic data. For pelagic species with high gene flow, present results highlighted the need to take into account the identification of phenotypic stocks to ensure sustainable fishery benefits and efficient conservation as they may have unique demographic properties and responses to exploitation.

Sardine (sardina Pilchardus) Larval Dispersal in Northern Canary Current Upwelling System (iberian Peninsula), Using Coupled Biophysical Techniques

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Santos, A. M. P. A.; Nieblas, A. E.; Verley, P.; Teles-Machado, A.; Bonhommeau, S.; Lett, C.; Garrido, S.; Peliz, A.

2017-12-01

The European sardine (Sardina pilchardus) is the most important small pelagic fishery of the Western Iberia Upwelling Ecosystem (WIUE). Recently, recruitment of this species has declined due to changing environmental conditions. Furthermore, controversies exist regarding its population structure with barriers thought to exist between the Atlantic-Iberian Peninsula, Northern Africa, and the Mediterranean. Few studies have investigated the transport and dispersal of sardine eggs and larvae off Iberia and the subsequent impact on larval recruitment variability. Here, we examine these issues using a Regional Ocean Modeling System climatology (1989-2008) coupled to the Lagrangian transport model, Ichthyop. Using biological parameters from the literature, we conduct simulations that investigate the effects of spawning patchiness, diel vertical migration behaviors, and egg buoyancy on the transport and recruitment of virtual sardine ichthyoplankton on the continental shelf. We find that release area, release depth, and month of release all significantly affect recruitment. Patchiness has no effect and diel vertical migration causes slightly lower recruitment. Egg buoyancy effects are significant and act similarly to depth of release. As with other studies, we find that recruitment peaks vary by latitude, explained here by the seasonal variability of offshore transport. We find weak, continuous alongshore transport between release areas, though a large proportion of simulated ichthyoplankton transport north to the Cantabrian coast (up to 27%). We also show low level transport into Morocco (up to 1%) and the Mediterranean (up to 8%). The high proportion of local retention and low but consistent alongshore transport supports the idea of a series of metapopulations along this coast. This study was supported by the Portuguese Science and Technology Foundation (FCT) through the research project MODELA (PTDC/MAR/098643/2008) and MedEx (MARIN-ERA/MAR/0002/2008). MedEx is also a

Airborne pollen of Carya, Celtis, Cupressus, Fraxinus and Pinus in the metropolitan area of Monterrey Nuevo Leon, Mexico.

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Rocha-Estrada, Alejandra; Alvarado-Vázquez, Marco Antonio; Torres-Cepeda, Teresa Elizabeth; Foroughbakhch-Pournavab, Rahim; Hernández-Piñero, Jorge Luis

2008-01-01

The concentration of pollen grains in the atmosphere over the metropolitan area of Monterrey, Nuevo Leon, Mexico, was analyzed throughout a year from March 2003-February 2004, focused on the genus Carya, Celtis, Cupressus, Fraxinus and Pinus owing to their interest as etiological pollinosis agents in diverse regions of the world. A 7-day Hirst type volumetric spore and pollen trap was located on a building roof of the city at 15 m from ground level for continuous sampling. The total quantity of pollen recorded for the study period was 21,083 grains/m(3), corresponding to 49.75 % of the taxa of interest. February and March were the months with higher pollen amounts in the air with 7,525 and 2,781 grains/m(3), respectively, and amounted to 49 % of total year through pollen. Fraxinus was the genus which contributed to the largest amount of pollen with 28 % of total grains (5,935 grains/m(3)) followed by Cupressus with 13 % (2,742 grains/ m(3)). Celtis, Pinus and Carya contributed with 5.3 % , 2.7 % , and 0.6 % of total pollen, respectively. These results indicate that Fraxinus and Cupressus are present in the area in sufficient quantity to indicate likely involvement in the origin of allergic disorders in the human population.

Medidas de conservación y ordenación pesquera del jurel Trachurus murphyien el Perú

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Jorge Zuzunaga

2013-10-01

Full Text Available Las pesquerías peruanas como actividades realizadas sobre recursos naturales renovables son reguladas por un marco jurídico, cuyo objetivo es asegurar su conservación y uso sostenible. La Ley General de Pesca (DL N°. 25977 señala que para cada tipo de pesquería y según la situación del recurso explotado debe establecerse un sistema de ordenamiento que concilie el principio de sostenibilidad de los recursos pesqueros o conservación en el largo plazo, con la obtención de los mayores beneficios económicos y sociales. En el ordenamiento pesquero del jurel Trachurus murphyi, las medidas incluyen entre otras, el régimen de acceso constituido por las autorizaciones de incremento de flota y permisos de pesca, que se otorgan solo a los buques cuyas capturas son destinadas únicamente para el consumo humano directo, de acuerdo a lo dispuesto en el Reglamento de Ordenamiento Pesquero (DS N.° 011-2007-PRODUCE. La obligación de destinar los recursos sardina Sardinops sagax, jurel T. murphyiy caballa Scomber japonicus al consumo humano directo rige desde septiembre 2002 (DS N°. 001-2002-PRODUCE. Otras medidas vigentes restringen el tamaño mínimo de malla de las redes, prohíben la captura de ejemplares menores de 31 cm de longitud total, determinan el inicio y cierre de las temporadas de pesca, los límites de captura o cuotas anuales. Estas disposiciones son complementadas por medidas de seguimiento, control y vigilancia para la efectiva conservación y uso sostenido del recurso.

Modelos de desarrollo de software de exportacion en el contexto de una region emergente: Caso area metropolitana de Monterrey, analisis de campo por el metodo de regresion lineal multiple.

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Torres, F.

2009-01-01

Full Text Available The objective of this document is to give to know the advantages that the different successful development models have offered for companies development of export software, making a synthesis from the CMM, until arriving to the CMMI, without stopping to make a critical analysis on the two models that have identified the critical factors for the export of software of the called countries of "3I" that they have demonstrated its success in this segment like: the model of factors of success for the software export (Heeks and Nicholson, 2002 and the model Oval (Carmel, E., 2003b, giving the minimum recommendations to the Mexican companies, developments of software export, have the competitiveness required in the international environment. This work is the result of the bibliographical revision of the models of software development and it is part of the doctoral thesis, about a sample of 40 companies developments of software export and the critical factors: Standard technological, Capacity of technological innovation, Formation of human capital, financial Capital and Support in investigation and development, with the purpose of identifying the opportunity areas to improve their international competitiveness, besides the economic results that can be obtained. The present study is based on the application of the statistical technique of the model of multiple lineal regressions, giving the following values: R= 0.549, 2 R =0.302, 2 R Ajus = 0.275. The positioning of the companies Mexican developments of software export and, in the particular case in the Metropolitan Area of the City of Monterrey, in the world market of software and related services, it will depend: that the company has a model to develop software export; of the consolidation of managerial associations of TI for the development of the export software and of the development of managerial consortia of export software in the Metropolitan Area of the City of Monterrey that they come to

Effect of different types of coatings on texture and nutritional properties of canned Portuguese sardines (Sardina pilchardus

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Rita Pinheiro

2014-06-01

Full Text Available Canned foods have a long history of success and are likely to remain popular for the foreseeable future owing to their convenience, long shelf life and economy. Interest in fish consumption has increased in recent years due to the wide range of its health benefits. In addition to fresh product, canned fish enables a delayed consumption of this appreciated kind of food. Among the different types of fish, in Portugal, the most used in canning manufacture are sardines, tuna, anchovies, mackerels. Vegetable oils and tomato sauce are usually adopted as coatings (liquid medium. In fact, oil has a preserving effect and contributes to make the product more palatable. Its protective action lies in the ability to insulate products from air, rather than having an active bacteriostatic or bactericidal action. Among the different types of coatings the most commonly used in canning are: olive oil, seed oils and different sauces, such as tomato sauce. Tomato sauce has also vegetable oil on its formulation. The amount of coating substance can affect the nutritional composition as well as texture properties of the sardines. The aim of this work was to investigate the effect of different types of coatings on texture and nutritional properties of whole, skinless and boneless canned Portuguese Sardines (Sardina pilchardus. An experimental investigation was carried out to assess the protein, lipid, carbohydrates and ash content, texture and colour profile of canned sardine with different kinds of coatings: olive oil, sunflower oil and tomato sauce. The obtained results showed that protein and carbohydrates content were not significantly influenced by the coating used, varying between 5%-8% and13%-18%, respectively. For the moisture content it was found that the samples with tomato sauce were 2.2-fold higher than the samples with sunflower oil, and 1.3-fold higher than the samples with olive oil, independently of being whole, skinless or boneless sardine. As

El impacto del Flipped Classroom como proceso para la revisión previa de los contenidos y materiales de los cursos o talleres de capacitación del personal administrativo del Instituto Tecnológico y de Estudios Superiores de Monterrey, Campus Guadalajara

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Robledo Martínez, Rosario Sarahí

2015-01-01

La presente investigación se llevó a cabo en la ciudad de Guadalajara, Jalisco, México, en las instalaciones del Tecnológico de Monterrey. El estudio se dirigió en su totalidad a los empleados administrativos que laboran en las distintas áreas de la institución, como lo son los profesionistas de apoyo, los auxiliares, las secretarias, los jefes de área, entre otros, con el firme propósito de involucrar la metodología basada...

Remote sensing estimation of isoprene and monoterpene emissions generated by natural vegetation in Monterrey, Mexico.

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Gastelum, Sandra L; Mejía-Velázquez, G M; Lozano-García, D Fabián

2016-06-01

In addition to oxygen, hydrocarbons are the most reactive chemical compounds produced by plants into the atmosphere. These compounds are part of the family of volatile organic compounds (VOCs) and are discharged in a great variety of forms. Among the VOCs produced by natural sources such as vegetation, the most studied until today are the isoprene and monoterpene. These substances can play an important role in the chemical balance of the atmosphere of a region. In this project, we develop a methodology to estimate the natural (vegetation) emission of isoprene and monoterpenes and applied it to the Monterrey Metropolitan Area, Mexico and its surrounding areas. Landsat-TM data was used to identify the dominant vegetation communities and field work to determine the foliage biomass density of key species. The studied communities were submontane scrub, oak, and pine forests and a combination of both. We carried out the estimation of emissions for isoprene and monoterpenes compounds in the different plant communities, with two different criteria: (1) taking into account the average foliage biomass density obtained from the various sample point in each vegetation community, and (2) using the foliage biomass density obtained for each transect, associated to an individual spectral class within a particular vegetation type. With this information, we obtained emission maps for each case. The results show that the main producers of isoprene are the communities that include species of the genus Quercus, located mainly on the Sierra Madre Oriental and Sierra de Picachos, with average isoprene emissions of 314.6 ton/day and 207.3 ton/day for the two methods utilized. The higher estimates of monoterpenes were found in the submontane scrub areas distributed along the valley of the metropolitan zone, with an estimated average emissions of 47.1 ton/day and 181.4 tons for the two methods respectively.

Physical activity and inactivity during leisure time in the adult population of Monterrey (Nuevo Leon, Mexico

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Jorge Isabel Zamarripa Rivera

2013-07-01

Full Text Available The main aim of this study is to examine the behaviours during physical activity according with genre, age, and the level of education of the inhabitants of the municipality of Monterrey (Mexico. A transversal study is presented. The sample comprised 1, 008 individuals of 15 years old or older (498 male= 49.4% and 510 female= 50.6%. The rank of age was comprised between 15 and 87 years old (M=36.57; SD=17.05. To collect the data the technique of survey was used through an ad hoc questionnaire called «Physical-sport habits and life styles.» The results of the study revealed a proportion of sedentary subjects twice superior to those active subjects, that is, just a third part of the active population. The results revealed important differences between genre (p=.001, age groups (p=.000, and level of education (p=.000 in the three behaviours (active, abandonment, and never. Male, between 15 and 29 years old, and those with university education are those that presented higher percentages in the active behaviour. On the other hand, women, in the group of 45 to 59 years old, and those with high school completed are those that presented the highest rates of abandonment. Finally, women, in the group of 60 years old and older, and those subjects without education, or with elementary education, are those that to a greater extent never had performed physical-sport activity. These results can serve as a base for the designing of strategies that promote the adherence to exercise taking into consideration its own characteristics.

Efectos del nivel socioecómico de la zona de residencia sobre el proceso de estratificación social en Monterrey

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Patricio Solís

2011-01-01

Full Text Available En este estudio exploramos los efectos de la composición socioeconómica de las áreas de residencia en el proceso de estratificación social de la ciudad de Monterrey. A partir de una versión modificada del modelo clásico de logro de estatus propuesto por Blau y Duncan, utilizamos modelos multinivel de regresión lineal y de tiempo al evento para probar algunas hipótesis sobre los efectos del nivel socioeconómico de la zona de residencia en ocho resultados educativos y ocupacionales: los años de escolaridad aprobados; la salida de la escuela; la entrada al primer trabajo la ocupación a los 21 años (o la primera ocupación si la entrada al trabajo ocurrió más tarde; la salida de una ocupación; y los cambios de trabajos hacia ocupaciones no manuales de alta calificación, no manuales de baja calificación y manuales. Los efectos son significativos en cinco de estos ocho resultados, lo cual sugiere que el nivel socioeconómico de la zona de residencia desempeña un papel importante de las trayectorias educativas y ocupacionales a lo largo del curso de la vida.

Validation of the Oral Hygiene Habits Scale: Relationships with sociodemographic variables in the general and clinical population of Monterrey, Mexico.

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Norma Rodríguez

2016-12-01

Full Text Available Several socioeconomic factors are associated with poor oral hygiene habits. A version of the Oral Hygiene Habits Scale (OHHS was developed in Mexico to measure these factors; however, its relationship with sociodemographic variables has not been studied. The verification of these relationships could contribute to the validation of the scale. Objective: To evaluate the relationship between oral hygiene habits and sociodemographic variables of sex, age, schooling, self-defined socioeconomic stratum, occupation and marital status in the general and clinical population of Monterrey, Mexico. Materials and Methods: A general population sample (GPS of 256 participants and a clinical sample (CPS of 240 participants were studied. The OHHS consisted of an eight-item Likert scale of 4 points ranging from 0 to 4. A descriptive correlational study was performed with a cross-sectional design. Data were analyzed using the Mann-Whitney U test, Kruskal-Wallis test, Spearman correlation coefficient, Cramer's V coefficient, and multivariate aligned rank test. Results: In GPS and CPS groups, OHHS was related to sex, schooling, socioeconomic stratum, occupation and marital status, but not to age. There were no significant interactions between the samples (GPS and CPS and sociodemographic variables. Conclusion: There is a statistically significant relationship between oral hygiene habits and some sociodemographic variables in the general and clinical population. This relationship supports the validity of the OHHS.

Una etnografía económica de los tacos callejeros en México. El caso de Monterrey

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Domingo García Garza

2011-01-01

Full Text Available Diversas ciencias sociales (economía, historia, antropología han abordado el tema de la venta ambulante de alimentos. Sin embargo, pocos han tomado seriamente como objeto de estudio uno de los platillos más emblemáticos de la comida mexicana: los tacos callejeros. El presente artículo esboza primeramente la génesis de la venta de tacos en la calle a través de una perspectiva socio-histórica. Contrariamente a la creencia, según la cual el mercado de los tacos es inmemorial, esta etnografía histórica demuestra la manera en la que nace el mercado callejero de tacos a mediados del siglo XX. Algunos factores macro estructurales como la industrialización de la tortilla, el crecimiento demográfico, los límites del modelo de sustitución de importaciones y la subalimentación explican la emergencia y la proliferación de los puestos de tacos en las calles de Monterrey. Aunada a una lectura micro social, esta etnografía identifica las principales características del mercado callejero de tacos (incertidumbre cualitativa, asimetría de la información, discrepancias de evaluación. Esas características permiten comprender la forma en que funciona el mercado de tacos. Gracias a una descripción etnografía detallada damos cuenta del trabajo social que existe detrás de las transacciones económicas de alimentos de dudosa procedencia.

Chemical Profile, Antibacterial and Antioxidant Activity of Algerian Citrus Essential Oils and Their Application in Sardina pilchardus

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Djamel Djenane

2015-06-01

Full Text Available Stored fish are frequently contaminated by foodborne pathogens. Lipid oxidation and microbial growth during storage are also important factors in the shelf-life of fresh fish. In order to ensure the safety of fish items, there is a need for control measures which are effective through natural inhibitory antimicrobials. It is also necessary to determine the efficacy of these products for fish protection against oxidative damage, to avoid deleterious changes and loss of commercial and nutritional value. Some synthetic chemicals used as preservatives have been reported to cause harmful effects to the environment and the consumers. The present investigation reports on the extraction by hydrodistillation and the chemical composition of three citrus peel essential oils (EOs: orange (Citrus sinensis L., lemon (Citrus limonum L. and bergamot (Citrus aurantium L. from Algeria. Yields for EOs were between 0.50% and 0.70%. The chemical composition of these EOs was determined by gas chromatography coupled with mass spectrometry (GC/MS. The results showed that the studied oils are made up mainly of limonene (77.37% for orange essential oil (EO; linalyl acetate (37.28%, linalool (23.36%, for bergamot EO; and finally limonene (51.39%, β-pinene (17.04% and γ-terpinene (13.46% for lemon EO. The in vitro antimicrobial activity of the EOs was evaluated against Staphylococcus aureus (S. aureus using the agar diffusion technique. Results revealed that lemon EO had more antibacterial effects than that from other EOs. Minimal inhibitory concentrations (MICs showed a range of 0.25–0.40 μL/mL. Lemon and bergamot citrus peel EOs were added at 1 × MIC and 4 × MIC values to Sardina pilchardus (S. pilchardus experimentally inoculated with S. aureus at a level of 3.5 log10 CFU/g and stored at 8 ± 1 °C. The results obtained revealed that the 4 × MIC value of bergamot reduced completely the growth of S. aureus from day 2 until the end of storage. The presence of EOs

Determinantes del consumo de energía eléctrica residencial de la Zona Metropolitana de Monterrey, Nuevo León, en México.

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Dionicio Morales Ramírez

2013-03-01

Full Text Available El objetivo del trabajo consiste en estudiar la evolución del consumo agregado de energía eléctrica residencial en la Zona Metropolitana de Monterrey, Nuevo León, México. Ello, debido a que dicha metrópoli ha experimentado niveles de consumo muy por encima de la media nacional. En este sentido, la idea principal consiste en cuantificar el impacto generado por el crecimiento de los usuarios, la sensibilidad del consumo ante variaciones en el precio del servicio y de un indicador nacional de la actividad económica como medida proxy del ingreso de la zona ante la ausencia de un indicador regional. Para ello, se estima una función de demanda al estilo Cobb-Douglas con series de tiempo de 1993 al 2010 en frecuencia mensual y el enfoque de cointegración de Engel-Granger. Las estimaciones realizadas nos indican que un incremento porcentual del número de hogares incrementa en 0.61 por ciento el consumo. De la misma forma, un incremento porcentual el ingreso incrementa en 0.88 por ciento el consumo. En tanto que incrementos en el precio del servicio reducen la demanda en 0.63 por ciento en el largo plazo.

Maritime Claims Reference Manual.

Science.gov (United States)

1997-01-01

Melenera to Peninsula de Gando From Peninsula de Gando to Moque Arinaga From Moque Arinaga to Punta Tenefe From Punta Tenefe to Playa Maspalomas (E...From Playa Maspalomas (W) to Punta Taozo From Isla de la Aldea to Punta Sardina From Punta Sardina to Punta Ortiz From Punta Ortiz to Punta...to Cabo Ancones 29° 01.10 13° 27.80 From Punta Lima 28° 55.80 13° 36.87 to Punta del Tarjalillo 28° 35.45 13° 49.25 From Punta de la Entallada 28

Clasificación acústica de anchoveta (Engraulis ringens y sardina común (Strangomera bentincki mediante máquinas de vectores soporte en la zona centro-sur de Chile: efecto de la calibración de los parámetros en la matriz de confusión Acoustic classification of anchovy (Engraulis ringens and sardine (Strangomera bentincki using support vector machines in central-southern Chile: effect of parameter calibration on the confusion matrix

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Hugo Robotham

2012-03-01

Full Text Available Se clasificó la anchoveta (Engraulis ringens y sardina común (Strangomera bentincki detectadas mediante equipos acústicos en la zona centro-sur de Chile, mediante el método de Máquinas de Vectores Soporte (SVM. Para esto se utilizaron descriptores de cardúmenes extraídos desde ecogramas, que fueron clasificados como morfológicos, batimétricos, energéticos y posicional espacial. Para lograr clasificaciones precisas mediante la utilización de esta metodología, fue necesario optimizar parámetros correspondientes al Kernel-Gaussiano, γ y de penalización del modelo C, mediante el análisis del efecto de la calibración sobre las matrices de confusión resultantes de la clasificación de las especies analizadas. El método SVM ajustó correctamente el 95,3% de los cardúmenes de anchoveta y sardina común. Los parámetros óptimos del Kernel-Gaussiano γ y de penalización C obtenidos mediante la metodología propuesta fueron γ = 450 y C = 0,95, respectivamente. Los parámetros mencionados incidieron de manera importante en la matriz de confusión y los porcentajes de clasificación final, por lo que se sugiere establecer, en aplicaciones futuras de este método, un protocolo experimental de calibración. La sardina común fue la especie con menor error de clasificación en el conjunto de las matrices de confusión. El descriptor correspondiente a profundidad del fondo fue el más sensible al SVM, la segunda variable en importancia es el descriptor distancia a la costa.The support vector machines (SVM method was used to classify the anchovy (Engraulis ringens and common sardine (Strangomera bentincki species detected in south-central Chile by means of acoustic equipment. For this, descriptors of fish schools (morphology, bathymetry, energy, spatial position extracted from ecograms were used. In order to obtain precise classifications using this methodology, it was necessary to optimize the parameters Gaussian-Kernel γ and penalty term

Biomasa desovante de la anchoveta y condiciones oceanográficas. Crucero 9408- 10 BIC SNP-1 y bolicheras

OpenAIRE

Guzmán Cárdenas, Soledad; Ayón Dejo, Patricia; Pizarro Pereyra, Luis

1995-01-01

Describe las actividades realizadas en el crucero de evaluación de biomasa desovante de anchoveta y sardina, realizadas desde el 11 de agosto al 4 de octubre de 1994, con el objetivo de evaluar a las poblaciones desovantes de la anchoveta y sardina del litoral, para lo cual exploró el área comprendida entre los 10°00 'S y 17°30 'S, llegando hasta las 102 mm de la costa. Los registros acústicos mostraron que la distribución de la anchoveta fue amplia, desde las 02 hasta las 102 millas de la...

anchovy Engraulis capensis, sardine Sardinops sa

African Journals Online (AJOL)

spamer

rates ranged between 0.05 and 0.29.h-1, with mean values of 0.09 and 0.27.h-1 for fish fed zooplankton and phytoplankton ... Linear, square root, and exponential func- tions were ...... Far Eastern sardine and their implication in the fluctuation.

Personas mayores con discapacidad afectadas por inundaciones en la ciudad de Monterrey, México. Análisis de su entorno físico-social

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Diego Sánchez González

2016-01-01

Full Text Available El estudio analiza los factores que determinan el entorno físico-social peligroso para las personas mayores con discapacidad afectadas por inundaciones en la ciudad de Monterrey, México. La metodología emplea los datos de una encuesta a personas mayores con discapacidad en zonas de inundación, y elabora una cartografía a escala de colonia. Los resultados muestran la situación de alta vulnerabilidad social de las personas mayores con discapacidad afectadas por inundaciones y asociada a problemas de exclusión social y dependencia en la ciudad. También, se indica que los factores determinantes de un entorno físico-social peligroso para las personas mayores con discapacidad afectadas por inundaciones son la exposición del ambiente habitado (vivienda y colonia, el acceso al apoyo institucional y la capacidad para adaptarse a los cambios del ambiente (barreras arquitectónicas, resiliencia, reconstrucción, forma de convivencia. Además, se propone desarrollar políticas sociales y urbanas encaminadas a favorecer ciudades amigables para las personas mayores con discapacidad, así como propiciar una gestión del riesgo gerontológica, enfocada a la atención de este grupo social, con objeto de favorecer su adaptación y resiliencia ante los retos del cambio climático en América Latina y el Caribe.

Variable spatial structure of schooling pelagic fish off Namibia ...

African Journals Online (AJOL)

Schools of horse mackerel Trachurus trachurus capensis, sardine Sardinops sagax and round herring Etrumeus whiteheadi were surveyed by conventional echo-integration along systematic transects. The transects were surveyed twice, in opposite directions. Clupeoid biomass was concentrated in a few dense ...

Characterising and comparing the spawning habitats of anchovy ...

African Journals Online (AJOL)

The spawning habitats of anchovy Engraulis encrasicolus and sardine Sardinops sagax in the southern Benguela upwelling ecosystem were characterised by comparing their egg abundances with environmental variables measured concomitantly during two different survey programmes: the South African Sardine and ...

Genetic characterization of the Mascaruna goat, a Sicilian ...

African Journals Online (AJOL)

Genetic characterization of the Mascaruna goat, a Sicilian autochthonous population, using molecular markers. Salvatore Mastrangelo, Marco Tolone, Maria Teresa Sardina, Rosalia Di Gerlando, Baldassare Portolano ...

Validation of the Single-Factor Model of the Relationship Assessment Scale among Married and Cohabiting Persons from Monterrey, Mexico

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José Moral de la Rubia

2015-07-01

Full Text Available The study of intimate partner relationships is particularly important because this union is the foundation of the family. Satisfaction with the relationship can be defined as the overall attitude to the relationship and the partner. The Hendrick's Relationship Assessment Scale (RAS is a instrument commonly used to assess the construct. Previous research papers have showed that this scale has high internal consistency and a single-factor structure. Although there are validation studies of the RAS, these studies used inappropriate statistical techniques to analyze its Likert-type items, and to determine the number of factors; likewise, its factor invariance across sex has not been previously contrasted. Therefore, this study posed the following research questions: Does the RAS have consistent and discriminating items? Basing the analysis on a polychoric correlation matrix, what is its level of internal consistency? How many factors emerge using rigorous empirical methods? Is the single-factor model invariant across sex? In order to answer these research questions, we used a random route probability sampling in this instrument validation study of the RAS. The sample was extracted from the population of married couples or the ones living in consensual union in Monterrey, Mexico. There were 431 female and 376 male participants in the study. The RAS’ items were consistent and discriminative. The internal consistency of the scale was excellent in the whole sample (ordinal α = .93, as well as among female (ordinal α = .94 and male participants (ordinal α = .92. Horn's parallel analysis and Velicer's  minimum average partial test suggested a one factor solution. Moreover, the single-factor model (with one correlation between the residuals of the two negatively worded items had a close fit to the data, and its properties of invariance across sex were very acceptable by the Unweighted Least Squares method. We conclude that the scale shows internal

Fungal spores in four catholic churches in the metropolitan area of Monterrey, Nuevo León State, Mexico – First study

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Alejandra Rocha Estrada

2015-05-01

Full Text Available Introduction. About 500,000 species of fungi have been described to-date, although an estimated between 1 – 1.5 million species may occur. They have a wide distribution in nature, contributing to the decomposition of organic matter and playing a part in the biogeochemical cycles of major nutrients. A small number are considered pathogens of animals and plants. There is ample historical evidence that certain types of allergies are associated with fungi; exposure to fungal allergens occurs in both outdoor and indoor spaces. Many indoor allergens are the same as those found outside buildings, entering through windows and doors, ventilation systems, or through cracks or other fissures in the walls. Objective. To determine the diversity and abundance of fungal spores inside four churches in the metropolitan area of Monterrey city in Mexico. Materials and methods. The study was carried out from July 2009 – January 2010 using a Hirst type volumetric collector (Burkard Manufacturing Co Ltd. Results. A total of 31,629 spores from 54 taxa were registered in the four churches. The building that showed the highest amount of spores was the Santa Catarina Mártir Church with 12,766 spores, followed by Cristo Rey with 7,155 and Nuestra Señora del Roble with 6,887. Regularly high concentrations of spores were recorded from 14:00 – 20:00 hours. The highest concentration value was observed at the church of Santa Catarina Mártir at 16:00 hours with 1153 spores/m 3 air. Conclusions. The most abundant spores in the four churches studied corresponded to Cladosporium, the [i]Aspergillus/Penicillium complex[/i], [i]Coprinus[/i], [i]Ganoderma[/i], [i]Curvularia and Ustilago[/i].

Organic composition and source apportionment of fine aerosol at Monterrey, Mexico, based on organic markers

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Y. Mancilla

2016-01-01

Full Text Available Primary emissions from anthropogenic and biogenic sources as well as secondary formation are responsible for the pollution levels of ambient air in major urban areas. These sources release fine particles into the air that negatively impact human health and the environment. Organic molecular markers, which are compounds that are unique to specific PM2.5 sources, can be utilized to identify the major emission sources in urban areas. In this study, 43 representative PM2.5 samples, for both daytime and nighttime periods, were built from individual samples collected in an urban site of the Monterrey metropolitan area (MMA during the spring and fall of 2011 and 2012. The samples were analyzed for organic carbon, elemental carbon, and organic molecular markers. Several diagnostic tools were employed for the preliminary identification of emission sources. Organic compounds for eight compound classes were quantified. The n-alkanoic acids were the most abundant, followed by n-alkanes, wood smoke markers, and levoglucosan/alkenoic acids. Polycyclic aromatic hydrocarbons (PAHs and hopanes were less abundant. The carbon preference index (0.7–2.6 for n-alkanes indicates a major contribution of anthropogenic and mixed sources during the fall and the spring, respectively. Hopanes levels confirmed the contribution from gasoline and diesel engines. In addition, the contribution of gasoline and diesel vehicle exhaust was confirmed and identified by the PAH concentrations in PM2.5. Diagnostic ratios of PAHs showed emissions from burning coal, wood, biomass, and other fossil fuels. The total PAHs and elemental carbon were correlated (r2 =  0.39–0.70 across the monitoring periods, reinforcing that motor vehicles are the major contributors of PAHs. Cholesterol levels remained constant during the spring and fall, showing evidence of the contribution of meat-cooking operations, while the isolated concentrations of levoglucosan suggested occasional biomass

Influence of oceanographic fronts and low oxygen on the distribution ...

African Journals Online (AJOL)

The horizontal and vertical distributions of eggs and larvae of sardine Sardinops sagax, anchovy Engraulis encrasicolus and horse mackerel Trachurus trachurus capensis were examined in relation to distribution patterns of temperature, salinity and dissolved oxygen. Samples were collected during February–March 2002 ...

El impacto de los medios de comunicación sobre la definición del voto de los ciudadanos de Monterrey en las elecciones presidenciales de 2012

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José Fabián Ruiz

2015-01-01

Full Text Available En este artículo se analiza el impacto que ejercen los medios de comunicación en la formación de las opiniones de los votantes acerca de las campafias electorales y de los candidatos en la ciudad de Monterrey durante la elección presidencial de 2012. Para llevar a cabo la investigación se utilizan los resultados de 7 grupos de discusión realizados con habitantes de la ciudad en eI marco del Proyecto de Observación Electoral 2012. En la primera parte se revisan algunos conceptos fundamentales para el desarrollo de la investigación. En la segunda, se detalla la metodología de grupos de enfoque utilizada y se aclaran algunas especificaciones técnicas del trabajo de campo lIevado a cabo. En la tercera, se presentan los resultados de la investigación. Finalmente, se comparten algunas reflexiones a modo de conclusión en tanto que los hallazgos redimensionan el significado que algunos le atribuyen a los medios de comunicación en la formación de las preferencias durante las campafias electorales. Esto abre espacio para realizar nuevos estudios, más específicos yenfocados, en un tema donde la investigación académica aún tiene interrogantes de importancia que resolver.

The logistic model for predicting the non-gonoactive Aedes aegypti females El modelo logístico para predecir la frecuencia de hembras no gonoactivas en función del tamaño corporal y tipo de colecta, en poblaciones de Aedes aegypti, en Monterrey, México

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Filiberto Reyes-Villanueva

2004-06-01

Full Text Available OBJECTIVE: To estimate, using logistic regression, the likelihood of occurrence of a non-gonoactive Aedes aegypti female, previously fed human blood, with relation to body size and collection method. MATERIAL AND METHODS: This study was conducted in Monterrey, Mexico, between 1994 and 1996. Ten samplings of 60 mosquitoes of Ae aegypti females were carried out in three dengue endemic areas: six of biting females, two of emerging mosquitoes, and two of indoor resting females. Gravid females, as well as those with blood in the gut were removed. Mosquitoes were taken to the laboratory and engorged on human blood. After 48 hours, ovaries were dissected to register whether they were gonoactive or non-gonoactive. Wing-length in mm was an indicator for body size. The logistic regression model was used to assess the likelihood of non-gonoactivity, as a binary variable, in relation to wing-length and collection method. RESULTS: Of the 600 females, 164 (27% remained non-gonoactive, with a wing-length range of 1.9-3.2 mm, almost equal to that of all females (1.8-3.3 mm. The logistic regression model showed a significant likelihood of a female remaining non-gonoactive (Y=1. The collection method did not influence the binary response, but there was an inverse relationship between non-gonoactivity and wing-length. CONCLUSIONS: Dengue vector populations from Monterrey, Mexico display a wide-range body size. Logistic regression was a useful tool to estimate the likelihood for an engorged female to remain non-gonoactive. The necessity for a second blood meal is present in any female, but small mosquitoes are more likely to bite again within a 2-day interval, in order to attain egg maturation.OBJETIVO: Estimar la probabilidad para que una hembra de Aedes aegypti, previamente alimentada con sangre humana, permanezca no gonoactiva, sin madurar huevos, dependiendo del tamaño corporal y tipo de colecta. MATERIAL Y MÉTODOS: Se hicieron 10 muestreos de Ae aegypti

Training of passive systems matter using the Project Oriented Learning technique in Ciudad de Mexico del Tecnologico de Monterey; Ensenanza de la materia de sistemas pasivos en el cuarto semestre de la carrera de arquitectura plan 99 bajo la tecnica didactica project oriented learning (Pol), en el campus Ciudad de Mexico del Tecnologico de Monterrey

Energy Technology Data Exchange (ETDEWEB)

Aguayo, G. R.

2004-07-01

Environmental design or solar architecture is one of the subjects taught in the fourth semester of Architecture at the Instituto Tecnologico y de Estudios Superiores de Monterrey (ITESM), using the Project Oriented Learning technique. This paper explains the way Environmental Design is part of what is called the 4th semester block in the Architecture curriculum using POL technique, the way this subject was taught before as opposed to the way it is currently taught, which are the roles of the actors involved, the main characteristics of the technique itself, and how the above responds to the 2005 Mission Statement of the ITESM. (Author)

Comparison of trends in abundance of guano-producing seabirds in ...

African Journals Online (AJOL)

The abundant guano-producing seabirds in Peru and southern Africa feed mainly on the large populations of anchovy Engraulis spp. and sardine Sardinops sagax supported by the Humboldt and Benguela upwelling systems. Numbers of guanay cormorants Phalacrocorax bougainvillii in Peru and the breeding population ...

The importance of lipid-rich fish prey for Cape gannet chick growth : are fishery discards an alternative?

NARCIS (Netherlands)

Mullers, Ralf H. E.; Navarro, Rene A.; Crawford, Robert J. M.; Underhill, Les G.

2009-01-01

A recent decline in population numbers of Cape gannets (Morus capensis) breeding off the west coast of South Africa coincided with decreased availability of lipid-rich fish prey: anchovy (Engraulis encrasicolus) and sardine (Sardinops sagax). Seabirds can use fishery discards as an alternative, but

Breeding success of African penguins Spheniscus demersus at ...

African Journals Online (AJOL)

The reproductive success of African penguins Spheniscus demersus at Dassen Island from 1994 to 2000 was variable, but much higher than previously reported figures for the species. Breeding success was positively related to the abundance of anchovy Engraulis encrasicolus and sardine Sardinops sagax, and the high ...

Spatial variability in branchial basket meristics and morphology of ...

African Journals Online (AJOL)

We examined spatial variability in meristic and morphological characteristics of the branchial basket of sardine Sardinops sagax collected from four geographical regions around the southern African coast, namely Namibia and the South African west, south and east coasts. Our analysis tested the hypothesis of three putative ...

Revised estimates of abundance of South African sardine and ...

African Journals Online (AJOL)

Hydro-acoustic surveys have been used to provide annual estimates of May recruitment and November spawner biomass of the South African sardine Sardinops sagax and anchovy Engraulis encrasicolus resources since 1984. These time-series of abundance estimates form the backbone of the assessment of these ...

Referencias bibliográficas: Julio Cortázar, perspectivas críticas. Ensayos inéditos / Pol Popovic Karic y Fidel Chávez Pérez, coordinadores.

OpenAIRE

Guerrero Almagro, Berta

2014-01-01

Reseña de Julio Cortázar, perspectivas críticas. Ensayos inéditos. Pol Popovic Karic y Fidel Chávez Pérez, coordinadores. Instituto Tecnológico y de Estudios Superiores de Monterrey, Campus de Monterrey y Miguel Ángel Porrúa, librero-editor México, 2012. 384 pp. (ISBN: 978-607-401-581-2)

Latin American Technology Initiative (LAT). Final technical report

Energy Technology Data Exchange (ETDEWEB)

Gallegos, Rolando

2000-08-04

This report explains why Monterrey, Mexico was chosen for the site of the Alternative Fuels Trade Mission (April 12-14, 2000), identifies some of the opportunities and challenges for U.S. businesses in Monterrey, identifies useful resources for U.S. companies doing business in Mexico, and details the process, execution, and results leading from the Trade Mission.

[Prevalence of reactions secundary to mosquito bites Aedes aegypti at en el Regional Center of Allergy and Clinical Immunology, University Hospital, de Monterrey, Nuevo Leon].

Science.gov (United States)

González Diaz, Sandra Nora; Cruz, Alfredo Arias; Sedó Mejía, Giovanni A; Rojas Lozano, Antonio A; Valenzuela, Enrique Avitia; Vidaurri Ojeda, Alma C

2010-01-01

although systemic reactions resulting from hymenoptera stings have been studied extensively, the prevalence of allergic reactions to mosquitoes is unknown. to investigate the prevalence of allergic reactions to Aedes aegypti bites in patients seeking treatment at the Allergy and Clinical Immunology Regional Center of Jose E Gonzalez University Hospital in Monterrey, Mexico. we carried out a cross-sectional, descriptive study that included patients receiving skin tests for aeroallergens; skin sensitivity to mosquito bites was also tested. A questionnaire was used to obtain information about previous allergic reactions to mosquito bites. a total of 482 patients between 2 and 60 years of age were included; 53% were female, 407 (84.4%) had a history of local reactions to mosquito bites. Twelve patients (2.4%) stated a history of large local reaction; three (0.6%) of them with a positive skin prick test, one (0.2%) of those had systemic reaction history to mosquito. Eighty five (17.6%) patients had a positive mosquito skin test and 307 (63.6%) had a positive skin test for at least one aeroallergen. Seventy-eight (91.7%) of the 85 patients with a positive mosquito skin test had a history of local skin reactions to mosquito bite (odds ratio: 2.303 [confidence interval (CI) 1.037-5.10]. There was no statistically significance association between allergic diseases and mosquito allergy. adverse reactions and allergic reactions to mosquito bites occur frequently. However mosquito allergy is low. Further studies are required to determine the prevalence of mosquito allergy in the general population.

Ecosystem considerations of the KwaZulu-Natal sardine run ...

African Journals Online (AJOL)

The annual winter sardine run along the South African east coast impacts the KwaZulu-Natal (KZN) coastal system in a variety of ways. These include ecological impacts, such as enrichment of a largely oligotrophic environment, competition between migrant sardine Sardinops sagax, other migrant and resident small ...

PRÁCTICAS PREVENTIVAS DE LOS HABITANTES MAYORES DE 25 AÑOS EN MONTERREY Y SU ZONA METROPOLITANA (MÉXICO

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Ma. Eugenia Garza

2004-01-01

Full Text Available Fundamento: Los padecimientos crónicos y degenerativos son las primeras causas de morbi-mortalidad en México, por lo que el Sector Salud ha implementado acciones de prevención y detección oportuna. El uso de los servicios de salud es una conducta dinámica de la población. Para que la gente utilice estas acciones de prevención es necesario que se reduzcan barreras de acceso. Así, el objetivo del estudio fue determinar la utilización de los servicios de detección de diabetes mellitus, hipertensión arterial, cáncer cérvicouterino y mamario y aplicación del toxoide tetánico diftérico. Métodos: El tamaño de la muestra fue de 254 personas de 25 años y más, que habitaban en Monterrey y su zona metropolitana. En el uso de acciones preventivas se consideró a las personas que las habían usado el año anterior. El análisis consistió en estadística descriptiva y análisis bivariado. Resultados: Más del 60% de la población correspondió al sexo femenino, la edad promedio fue de 42,3 años±14 años y tres cuartas partes de la población contó con seguridad social. Un 37% mencionó haberse realizado la detección de diabetes y un 44,5% de hipertensión, mientras que le aplicaron el toxoide tetánico diftérico a un 31,1%. En las detecciones propias de la mujer, a un 34,3% de la población femenina le practicaron la correspondiente a cáncer cérvicouterino en tanto que a un 29,5%, la de cáncer mamario. No hubo relación entre uso de acciones con antecedentes familiares y percepción de importancia de la detección. Conclusiones: El uso de las acciones preventivas está por debajo de algunos estándares internacionales. Es necesaria la búsqueda de personas expuestas al riesgo para detectar oportunamente cualquier padecimiento crónico.

Book Review Emulation real estate values ​​and territorial dynamics / Reseña del libro Emulación del valor inmobiliario y dinámica territorial

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Adolfo Benito Narváez Tijerina

2011-09-01

Full Text Available Reseña del libro: "Emulación del valor inmobiliario y dinámica territorial", de Jesús Manuel Fitch Osuna, Monterrey, Universidad Autónoma de Nuevo León-UPC, 2010. Book Review: "Emulation real estate values ​​and territorial dynamics," Jesus Manuel Fitch Osuna, Monterrey, Universidad Autonoma de Nuevo Leon-UPC, 2010.

A model of trophic flows in the northern Benguela upwelling system ...

African Journals Online (AJOL)

Ultimately, this type of model may form a basis for multispecies management approaches in the region. By the 1980s, sardine Sardinops sagax and hake Merluccius spp. stocks in the northern Benguela had both undergone a decline, yet were still heavily fished. Horse mackerel Trachurus trachurus capensis had increased ...

Full-length sequencing and identification of novel polymorphisms in ...

Indian Academy of Sciences (India)

Rosalia Di Gerlando

2017-08-16

Aug 16, 2017 ... ANNA MARIA SUTERA, MARIA TERESA SARDINA. ∗ ... SNPs that might be important in future studies and laid the basis for further association analyses needed to ..... Haplotype-based analysis can provide higher power,.

RESEARCH ARTICLE Full length sequencing and novel ...

Indian Academy of Sciences (India)

Navya

2016-12-16

Dec 16, 2016 ... TOLONE, ANNA MARIA SUTERA, MARIA TERESA SARDINA, BALDASSARE ... finding of novel SNPs that might be important in future studies and laid the .... power, precision and quality to assess the relationship between ...

Identification of Candidate Zero Maintenance Paving Materials. Volume 1

Science.gov (United States)

1977-05-01

Con Azufre," Proceedings, Second Interna- tional Seminar on Concrete Technology, Inscituto de Ingenieria Civil de la Universidad Autonoma de Nuevo Leon...Seminar on Concrete Technology, ]nstituto de Ingenieria Civil de la Univarsidad Autonoma de Nuevo Leon, Monterrey, Mexico, Mcr 1975, pp 261-274. 49...Seminario Internacional Sobre Technologia del Concrete, Insti- tute de Ingenieria Civil de la Universidad Autononia de Nuevo Leon, Monterrey, N. L., Mexico

Remotely Piloted Aerial Systems Survivability: A Defense-in-Depth Approach

Science.gov (United States)

2012-09-01

The 2007 roadmap fails to account for the fact that survivability and interoperability cannot be divorced when dealing with a system of systems...School, Monterrey , CA, August 2004), http://www.nps.edu/Academics/Schools/GSEAS/Departments/SE/Documents/SE- Scholarship.doc, (accessed 13 December 2009...Statement on Systems Engineering Scholarship.” Naval Postgraduate School, Monterrey , CA, August 2004. http://www.nps.edu/Academics/Schools/GSEAS

Tropical South-East Atlantic response to ENSO as an ecosystem ...

African Journals Online (AJOL)

Cases were selected based on indices of Pacific sea surface temperature and South-East African rainfall. ... an El Niño event, and higher sardine Sardinops sagax catches tend to follow a La Niña event, through the northward and southward shift respectively of the South Atlantic anticyclone and attendant coastal upwelling.

A real-time PCR assay to estimate invertebrate and fish predation on anchovy eggs in the Bay of Biscay

KAUST Repository

Albaina, A.; Irigoien, Xabier; Aldalur, Unai; Cotano, Unai; Santos, Marí a; Boyra, Guillermo; Estonba, Andone

2015-01-01

In order to investigate the role of predation on eggs and larvae in the recruitment of anchovy (Engraulis encrasicolus), sardine (Sardina pilchardus), sprat (Sprattus sprattus) and 52 macrozooplankton taxa were assayed for anchovy remains in the gut

The Causes and Costs of Modifications to Military Construction Contracts.

Science.gov (United States)

1986-06-06

issue of contract modifications in federal construction. The first was written by Henry J. Turowski at the Naval Postgraduate 3chool in Monterrey and...Postgraduate School, Monterrey , December 1980). 12. Henry J. Rowland, "The Causes and Effects of Change Orders on the Construction Process", (Master’s thesis...The creation of a separate review cell does not imply completely divorcing review from design. These functions are closely intertwined. The review

African Journal of Biotechnology - Vol 12, No 24 (2013)

African Journals Online (AJOL)

Genetic characterization of the Mascaruna goat, a Sicilian autochthonous population, using molecular markers · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. Salvatore Mastrangelo, Marco Tolone, Maria Teresa Sardina, Rosalia Di Gerlando, Baldassare Portolano ...

Evaluation of the use of reactive oxygen species (ROS generated through oxyion® technology in strawberry (Fragaria × ananassa (Duchesne ex Weston Duchesne ex Rozier cv. Monterrey storage

Directory of Open Access Journals (Sweden)

Rafael Andres Ramirez

2018-04-01

Full Text Available Reactive oxygen species (ROS play a key role in oxidative stress processes at the biological level. In most cases the presence of these chemical species is undesirable due to the impact they have on tissues and cellular structures, however, their effects can be used to control the incidence of microorganisms responsible for deterioration processes in fruits and vegetables. In the present study the feasibility of combining low temperature storage with the presence of reactive oxygen species generated using Oxyion® technology to control the deterioration process in strawberry (Fragaria X ananassa was studied. The treatments used were as follows: control storage (4°C ± 2°C without Oxyion® and ROS storage (4°C ± 2°C with Oxyion®, for two product categories according to weight and maturation state according to NTC 4103 (ICONTEC, 1997. The variables were monitored with measuring points at 1, 3, 5, 7, 10 and 15 days after harvest in percentage of loss of mass, soluble solids, respiratory intensity, acidity, resistance, color and ethylene and significant interactions among variables. At the conclusion of the study, Oxyion® technology was found to have statistically significant differences compared to control, and have allowed to less weight loss, higher resistance and lower exogenous ethylene production, extending the life of strawberry cv. Monterrey in a 40% during storage, additionally the losses by action of microorganisms present in strawberries surface were reduced considerably, generating a positive precedent in the processes of storage and conservation of fruits for Colombia.

Anchovy Engraulis capensis and sardine Sardinops sagax currently ...

African Journals Online (AJOL)

spamer

Recruitment is thought to be determined largely by ... for forecasting recruitment strength. ..... In March and April, sustained upwelling wind events ... 2 Assumes average current velocities of 10–15 cm.s–1 in a west-north-westerly direction ...

Efecto determinante de la motivación de viaje sobre la imagen de destino en turistas de ocio a un destino urbano: el caso de Monterrey, México. Una aproximación por medio de mínimos cuadrados parciales (PLS

Directory of Open Access Journals (Sweden)

José T. Olague

2016-06-01

Full Text Available Los turistas urbanos se caracterizan por ser uno de los segmentos de mayor crecimiento en los mercados turísticos actuales. Monterrey (México, uno de los principales destinos   urbanos del país, ha apostado en la actualidad por mejorar su competitividad. Esta investigación se propuso encontrar evidencia acerca de la relación causal de la motivación de viaje sobre la imagen percibida del destino, dos variables importantes por su influencia en la satisfacción de los visitantes. Una revisión de la literatura permitió proponer constructos teóricos integrados en un instrumento para la recogida de datos vía encuesta a una muestra representativa. Por medio del método de regresión y ecuaciones estructurales por mínimos cuadrados parciales (PLS, se identificaron los componentes principales de ambas variables y se obtuvo un modelo explicativo de la imagen percibida del destino en función de la motivación de viaje. Finalmente, se emiten recomendaciones para la gestión del destino urbano en función de los resultados obtenidos.

Chemical composition and antioxidant activity of seven cultivars of guava (Psidium guajava) fruits.

Science.gov (United States)

Flores, Gema; Wu, Shi-Biao; Negrin, Adam; Kennelly, Edward J

2015-03-01

The antioxidant activity and identification of phenolic compounds of seven edible guava (Psidium guajava) cultivars that varied in colour from white to pink were examined. In the DPPH assay all four pink-pulp guavas (Barbie Pink, Homestead, Sardina 1, Sardina 2) included in the study showed higher activity than the white pulp cultivars (Yen 2 and Sayla) and less than the red pulp guava cultivar (Thai Maroon). In the ABTS(+) assay this trend was the same up to 20 min, but from 20 to 40 min Barbie Pink showed lower activity than the white guavas. Twenty-one compounds were characterised in the cultivars, and ten of them are reported for the first time in this fruit. Principle component analysis was performed to identify differences in chemistry among these cultivars. Our results suggest that the antioxidant activity and phytochemical composition of P. guajava vary significantly according to the cultivar and pulp colour. Copyright © 2014. Published by Elsevier Ltd.

The use of reflecting paints on building`s roofs for energy saving; Uso de pinturas reflejantes en los techos de las edificaciones para el ahorro de energia electrica

Energy Technology Data Exchange (ETDEWEB)

Valera Negrete, Jose Adrian [Programa de Ahorro de Energia del Sector Electrico (PAESE), Comision Federal de Electricidad, Mexico, D. F. (Mexico); Sanchez Soto, Ramon [Facultad de Ingenieria, Departamento de Termoenergia de la UNAM, Mexico, D. F. (Mexico)

1998-12-31

This paper shows the effects of the use of reflecting paints in different colors on the buildings roofs and the results in energy saving obtained in a field test carried on in Monterrey, Nuevo Leon State of Mexico using aluminum paint. [Espanol] El presente trabajo muestra los efectos del uso de pinturas reflejantes de diferentes colores en los techos de edificaciones, y los resultados de ahorro de energia electrica obtenidos en una prueba de campo efectuada en Monterrey, Nuevo Leon, Mexico, utilizando pintura de aluminio.

The use of reflecting paints on building`s roofs for energy saving; Uso de pinturas reflejantes en los techos de las edificaciones para el ahorro de energia electrica

Energy Technology Data Exchange (ETDEWEB)

Valera Negrete, Jose Adrian [Programa de Ahorro de Energia del Sector Electrico (PAESE), Comision Federal de Electricidad, Mexico, D. F. (Mexico); Sanchez Soto, Ramon [Facultad de Ingenieria, Departamento de Termoenergia de la UNAM, Mexico, D. F. (Mexico)

1999-12-31

This paper shows the effects of the use of reflecting paints in different colors on the buildings roofs and the results in energy saving obtained in a field test carried on in Monterrey, Nuevo Leon State of Mexico using aluminum paint. [Espanol] El presente trabajo muestra los efectos del uso de pinturas reflejantes de diferentes colores en los techos de edificaciones, y los resultados de ahorro de energia electrica obtenidos en una prueba de campo efectuada en Monterrey, Nuevo Leon, Mexico, utilizando pintura de aluminio.

Determination of trace metals in TSP and PM2.5 materials collected in the Metropolitan Area of Monterrey, Mexico: A characterization study by XPS, ICP-AES and SEM-EDS

Science.gov (United States)

González, Lucy T.; Longoria Rodríguez, F. E.; Sánchez-Domínguez, M.; Cavazos, Aleyda; Leyva-Porras, C.; Silva-Vidaurri, L. G.; Askar, Karim Acuña; Kharissov, B. I.; Villarreal Chiu, J. F.; Alfaro Barbosa, J. M.

2017-11-01

The concentration levels of trace metals of toxicological importance were evaluated in the total suspended particles (TSP) and particulate matter smaller than 2.5 μm (PM2.5) collected in the Metropolitan Area of Monterrey (MAM) in Mexico. Samples were characterized by inductively coupled plasma atomic emission spectroscopy (ICP-AES), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy with an energy-dispersive spectroscopy system (SEM-EDS). In addition, the data were statistically treated by the methodology of Pearson Correlation (PC) and Principal Components Analysis (PCA) to identify the possible emitting sources. Surface analysis of the particulate matter (PM) by XPS revealed that the most abundant elements were Ca, Al, Na, Zn, Cu and Mg. The deconvolution of the Ca2p, Zn2p and Cu2p signals showed that the main contributors were CaCO3, ZnO and Cu/Cu2O, respectively. The bulk analysis of the PM by ICP-AES showed Fe, Cu and Zn as the most abundant elements. Fe-rich particles presented two different morphologies: the prismatic particles were associated with a natural origin, while the spherical particles with anthropogenic sources. The Zn and Cu were predominantly observed in the sampling stations with high vehicular traffic, and the emitting sources were associated with the burning of fuels from automobiles and the wear of the tires and brakes. The highest concentration of Pb was detected in the sampling station located near the industrial zones, and its cause was associated with the ceramic and glass industries, the burning of fuel oil in power plants and the production of lead-based batteries for automobiles.

The southern African sardine Sardinops sagax supports major purse ...

African Journals Online (AJOL)

spamer

be caused by environmental factors such as light level and currents, as well as by ... 2 Marine & Coastal Management, Department of Environmental Affairs and Tourism, Private Bag X2, Rogge Bay 8012, Cape Town,. South Africa. 3 Institut de ..... An impression, but one that was difficult to quantify, was that the detection rate ...

The southern African sardine Sardinops sagax (also known as ...

African Journals Online (AJOL)

denise

CHANGES IN ABUNDANCE OF THE NORTHERN BENGUELA SARDINE STOCK. DURING THE ... date of young fish, using standard growth rates, indi- ... and catch per unit effort (cpue) is recognized to be a ... is developed, age-based assessment models cannot be ... The methods are described in various cruise reports.

Although South African sardine (or pilchard, Sardinops sagax) were ...

African Journals Online (AJOL)

spamer

was based on assumed reliability of the hydroacoustic estimates of ... of uncertainties about the value of natural mortality) .... TAC only) also to the estimate of sardine recruitment from the ... of sardine recruitment from that survey: rev ad rev.

Efectos del fenómeno "El Niño 1997-98" sobre los principales recursos pelágicos en la costa peruana

Directory of Open Access Journals (Sweden)

Miguel Ñiquen

2014-06-01

Full Text Available En el período abril 1997 setiembre 1998 fueron realizados 5 cruceros de evaluación de los recursos pelágicos en la costa peruana, éstos permitieron observar cambios en la composición por especies, distribución, estructura por tamaño, reproducción y niveles poblacionales de los principales recursos pelágicos. Estos cambios guardan similitud con los observados en los eventos El Niño 1972-73 y 1982-83, especialmente en cuanto a la disminución de la biomasa de anchoveta y el incremento de otras especies pelágicas. En el período post-Niño se observó cambios notables en la estructura por tallas de anchoveta, mientras que la sardina, samas a y caballa coincidieron en mostrar buenos reclutamientos. La actividad reproductiva también se incrementó, inclusive en tallas juveniles, destacando la incidencia de sardinas sexualmente maduras con longitudes de 18-20 cm, situación que no había sido antes registrada.

Análisis del crecimiento larvario en anchoa ("Engraulis encrasicolus") y sardina ("Sardina pilchardus") del Mediterráneo occidental

OpenAIRE

Quintanilla Hervás, José María

2016-01-01

Los primeros estadios de las especies de pequeños pelágicos forman parte del ictioplancton, que representa la fracción zooplanctónica compuesta por los huevos y larvas de peces (Ahlstrom & Moser 1976). Las fases larvarias de estas especies se extienden desde la eclosión de larva del huevo hasta que alcanza el estado juvenil cuando la larva adquiere el aspecto de un pequeño adulto (Blaxter 1969). Teniendo en cuenta todo su ciclo vital, durante sus fases larvarias las especies se ven sometidas ...

XRD-based 40Ar/39Ar age correction for fine-grained illite, with application to folded carbonates in the Monterrey Salient (northern Mexico)

Science.gov (United States)

Fitz-Díaz, Elisa; Hall, Chris M.; van der Pluijm, Ben A.

2016-05-01

Due to their minute size, 40Ar/39Ar analysis of illite faces significant analytical challenges, including mineral characterization and, especially, effects of grain size and crystallography on 39Ar recoil. Quantifying the effects of 39Ar recoil requires the use of sample vacuum encapsulation during irradiation, which permits the measurement of the fraction of recoiled 39Ar as well as the 39Ar and 40Ar∗ retained within illite crystals that are released during step heating. Total-Gas Ages (TGA) are calculated by using both recoiled and retained argon, which is functionally equivalent to K-Ar ages, while Retention Ages (RA) only involve retained Ar in the crystal. Natural applications have shown that TGA fits stratigraphic constraints of geological processes when the average illite crystallite thickness (ICT) is smaller than 10 nm, and that RA matches these constraints for ICTs larger than 50 nm. We propose a new age correction method that takes into account the average ICT and corresponding recoiled 39Ar for a sample, with X-ray Corrected Ages (XCA) lying between Total-Gas and Retention Ages depending on ICT. This correction is particularly useful in samples containing authigenic illite formed in the anchizone, with typical ICT values between 10 and 50 nm. In three samples containing authigenic illite from Cretaceous carbonates in the Monterrey Salient in northern Mexico, there is a range in TGAs among the different size-fractions of 46-49, 36-43 and 40-52 Ma, while RAs range from 54-64, 47-52 and 53-54 Ma, respectively. XCA calculations produce tighter age ranges for these samples of 52.5-56, 45.5-48.5 and 49-52.5 Ma, respectively. In an apparent age vs ICT or %2M 1illite plot, authigenic illite grains show a slope that is in general slightly positive for TGA, slightly negative for RA, but close to zero for XCA, with thinner crystallites showing more dispersion than thicker ones. In order to test if dispersion is due to a different formation history or the result

Seasonal, lunar and tidal control of ichthyoplankton dynamics at the interface between a temperate estuary and adjacent coastal waters (western Portugal

Directory of Open Access Journals (Sweden)

Ana Lígia Primo

2011-11-01

Full Text Available Influence of season, lunar-tide cycle and tide on ichthyoplankton at the interface between Mondego estuary and the adjacent coast and on up-estuary transport was evaluated. Seasonal samples were collected at a fixed station at the mouth of the estuary during diel cycles, at neap and spring tides. Additionally, four sampling stations along the estuary were assessed. Pomatoschistus spp. was the main estuarine taxon, while Sardina pilchardus and Parablennius pilicornis were the most important marine species. Ichthyoplankton entrance and transport along the estuary presented a seasonal pattern with higher densities during summer. Lunar-tide cycle also represented an important influence, structuring communities that reach the estuary and their subsequent distribution. Solea senegalensis and Sardina pilchardus seemed to take advantage of spring tides to enter the estuary. S. pilchardus appear to be using tides to move upstream of the estuary. Ichthyoplankton entrance in the estuary seemed related to species spawning period, while its distribution within the estuary depends on in situ spawning and on the capacity of species to counteract currents and river flow. The present study provides a better understanding of ichthyoplankton dynamics at the interface of two coastal systems, reinforcing knowledge of the lunar-tide cycle influence on ichthyoplankton communities.

E3 Success Story - Whirlpool Trains Staff on Lean and Green Advantage

Science.gov (United States)

Whirlpool Corporation invited Green Suppliers Network representatives to its Monterrey facility to provide training on the Lean and Green Advantage. The project sought to expand E3 initiatives to every part of the company's operations.

Pérez-Hernández et al., Afr J Tradit Complement Altern Med., (2018 ...

African Journals Online (AJOL)

USER

2017-12-29

Dec 29, 2017 ... Departamento de Fisiología, Monterrey, Nuevo León, México. ... drug and medical treatment available, especially for the prevention of stones .... Statistical analysis was performed by SPSS software (Statistical Package for the ...

Pelagic fish stock assessment by acoustic methods at Ifremer

OpenAIRE

Doray, Mathieu; Masse, Jacques; Petitgas, Pierre; Doray, Mathieu; Masse, Jacques; Petitgas, Pierre

2010-01-01

The main objective of Ifremer's pelagic sea surveys (Pelgas in the Bay of Biscay and Pelmed in the Gulf of Lion) is to assess the biomass of anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) populations, based on fisheries acoustic data. Complementary data on the whole pelagic ecosystem (hydrology, plankton, fish eggs and larvae, other fish species, seabirds and marine mammals) are also collected during the cruises. This document describes the procedures used to derive stock a...

A Risk Mitigation Model: Lessons Learned From Actual Insider Sabotage

Science.gov (United States)

2006-11-07

performance Responsibilities removed from projects Suspension of Internet access Death in family ; Divorce Financial Disagreement re: salary/compensation...Infrastructure by Information Technology Insiders, ” Monterrey , CA.: Defense Personnel Security Research and Education Center. Shaw, E.D. (2004). “The

75 FR 66358 - Trade Mission to Mexico in Conjunction With Trade Winds Forum-The Americas

Science.gov (United States)

2010-10-28

... services, environmental technologies & equipment, franchising, hotel & restaurant equipment, housing..., and Monterrey. Specific market selection and location of business-to-business meetings will be based... ability to meet certain conditions and best satisfy the selection criteria as outlined below. A maximum of...

Achievement and Retention of Spanish Presented Via Videodisc in Linear, Segmented and Interactive Modes.

Science.gov (United States)

1987-01-01

with non-emotional mate- rial . . . . P5. Students who are able to choose from a ’ menu ’ of topics to provide the general con- text of the exercise...smaller version of the videodisc encoded digitally and capable of storing vast numbers of still frames and text files, presents yet another opportunity for...37. En el restaurante , Ramiro pide . a. chorizo y tinto. b. sardinas y vino. c. tortilla y vino. 38. Cuando es t comiendo en el restaurante , Ramiro

Preservación y abundancia de escamas de peces en sedimentos del margen continental de Chile (21-36° S Fish scale preservation and abundance in sediments from the continental margin off Chile (21-36° S

Directory of Open Access Journals (Sweden)

JAVIER A DÍAZ-OCHOA

2008-12-01

Full Text Available Con el objetivo de evaluar la relación entre la preservación de escamas de peces y las variaciones en las condiciones redox en sedimentos del margen continental de Chile, este trabajo presenta recuentos de escamas de peces y concentraciones normalizadas de elementos redox sensibles (Mo/Al, S/Al, Fe/Al en ocho testigos de sedimento recolectados en la zona de minimo oxígeno frente a Chile (Iquique: 20°15' S, bahía de Mejillones: 23° S y Concepción: 36° S. En el norte de Chile (Iquique y Mejillones predominan las escamas de anchoveta (Engraulis ringens y de peces de la familia Myctophidae (media = 90 y 120 escamas 1.000 cm-3, respectivamente mientras que en Chile centro-sur (Concepción son más abundantes las escamas de jurel (Trachurus murphy; media = 140 escamas 1.000 cm-3. La abundancia de escamas de merluza común (Merluccius gayi gayi y de sardina (Sardinops sagax es aproximadamente un orden de magnitud más baja que la de anchoveta o jurel. En general, los valores más altos y los rangos más amplios de variación en las razones Mo/Al, S/Al y Fe/Al se encuentran en Mejillones (Mo/Al ~0,8-12 mg g-1, S/Al 0,2-4,6 g g-1, Fe/Al 0,3-0,7 g g-1 seguidos por Iquique (Mo/Al -0,2-1,8; S/Al 0,2-0,7, Fe/Al 0,5-0,8, mientras que Concepción revela valores más bajos y poco variables (Mo/Al ~0,07, S/Al ~0,15 y Fe/Al ~0,5. La razón Mo/Al, utilizada como indicador de paleo-oxigenación, permite inferir condiciones reductoras relativamente más intensas en los sedimentos de la Bahía de Mejillones e Iquique que en Concepción. En las tres localidades de muestreo se evidencia una asociación estadísticamente significativa entre la abundancia de escamas de anchoveta y el logaritmo de la razón Mo/Al (r²= 0,46; P 1 mg g-1.The relationship between fish scale preservation and variations in the sediment redox conditions on Chile's continental shelf are evaluated herein through fish scale counts and normalized concentrations of redox sensitive elements

Los retos de la educacion en linea en las universidades regiomontanas

Directory of Open Access Journals (Sweden)

Aldape, T

2006-07-01

Full Text Available The information presented in this study centers around the time that Monterrey-area Universities are experiencing online approach to education and the challenges these universities are facing in order to establish a competitive advantage in the context of globalization.

Presentación: Aplicaciones de la Realidad Aumentada en educación

Directory of Open Access Journals (Sweden)

Julio Cabero Almenara

2017-01-01

Full Text Available Hablar de “Realidad Aumentada” (“Augmented Reality” (RA es posiblemente centrarnos en una de las tecnologías de las denominadas emergentes que con más fuerza se están acercando a diferentes terrenos de la sociedad, que van desde el ocio, la publicidad, el marketing y por supuesto en el terreno educativo como está siendo puesto de manifiesto tanto desde diferentes Informes Horizon (García et al., 2010; Johnson et al., 2016, como en los Reportes EduTrend del Observatorio del Tecnológico de Monterrey (Tecnológico de Monterrey, 2015, o en los hiperciclos tecnológicos que elabora anualmente la compañía “Gardner Research” (http://www.gartner.com/technology/home.jsp, líder mundial en investigación y asesoramiento en Tecnologías de la Información y Comunicación (TIC.

Características de las Interacciones en los Procesos de Enseñanza y de Aprendizaje Constructivistas que Promueven Maestras de Ciencia y los Significados que le Otorgan-Edición Única

OpenAIRE

Frances V. Figarella García

2004-01-01

Una disertación presentada ante la Escuela de Graduados en Educación del Instituto Tecnológico y de Estudios Superiores de Monterrey (ITESM)para satisfacer parcialmente los requerimientos necesarios para obtener el grado de DOCTOR EN INNOVACIóN Y TECNOLOGíA EDUCATIVA

Organic amendment optimization for treatment of hydrocarbon ...

African Journals Online (AJOL)

Jane

2010-10-18

Oct 18, 2010 ... Universidad Juárez Autónoma de Tabasco, División Académica de Ciencias Biológicas, Km 0.5 Carretera Villahermosa- ... These problems have led to social ..... Monterrey, Nuevo León, México, Red Interamericana para.

Dinámica poblacional de Opisthonema medirastre (Pisces: Clupeidae en la Costa Pacífica de Costa Rica.

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Rosa Lidia Soto Rojas

2016-03-01

Full Text Available Se analizaron la curva de crecimiento y la talla de la primera madurez  de la sardina Opisthonema medirastre en el Golfo de Nicoya. Los resultados muestran que esta especie presenta una L∞ de 30,6 cm para las hembras y de 28,0 cm para los machos. Los valores de la tasa de crecimiento (K fueron bajos en concordancia con lo esperado para especies de vida corta. La talla de primera madurez de esta especie es de 17,0 cm.

E. C. Meyer, General, United States Army, Chief of Staff, June 1979-June 1983

Science.gov (United States)

1983-01-01

INTERVIEW WITH MORLEY SAFER, CBS EVENING NEWS CORRESPONDENT 179 15 March Address to the West Point Society of the Monterrey Pennisula Founder’s Day...praisal of individual Service programs divorced Service Chief wearing two hats. While the Joint from Service advocacy of weapons systems. The Staff

Cambios y persistencias en la mentalidad nobiliaria gallega en el tránsito de la edad media a la moderna según la literatura testamentaria: un estudio comparativo

Directory of Open Access Journals (Sweden)

Calderón, Carlos

2007-12-01

Full Text Available A study comparing the testaments of don Sancho de Ulloa, count of Monterrey (d. 1505, and Gómez Pérez de las Mariñas, capitán general of the Philippines (1593, with the aim of revealing continuity and change in the noble mentality expressed in last wills through expressions of religiosity, funerary rites, and particularly hereditary regimes and bequests, considered as elements of continuity strengthening the family nucleus.

Estudio comparado de los testamentos de don Sancho de Ulloa, conde de Monterrey (m. 1505 y Gómez Pérez de las Mariñas, capitán general de Filipinas (1593, con el objeto de mostrar continuidades y cambios en la mentalidad nobiliaria expresada en sus últimas voluntades relativas a las expresiones de religiosidad, ritos funerarios y, en especial, regímenes hereditarios y legados, considerados como elementos de continuidad y fortalecimiento del núcleo familiar.

The relationships between heavy metal (Cd, Cr, Cu, Fe, Pb, Zn) levels and the size of six Mediterranean fish species

International Nuclear Information System (INIS)

Canli, Mustafa; Atli, Gueluezar

2003-01-01

Significant relationships between metal concentrations and fish size were negative. - Heavy metal (Cd, Cr, Cu, Fe, Pb, Zn) concentrations in the muscle, gill and liver of six fish species (Sparus auratus, Atherina hepsetus, Mugil cephalus, Trigla cuculus, Sardina pilchardus and Scomberesox saurus) from the northeast Mediterranean Sea were measured and the relationships between fish size (length and weight) and metal concentrations in the tissues were investigated by linear regression analysis. Metal concentrations (as μg/g d.w.) were highest in the liver, except for iron in the gill of Scomberesox saurus and lowest in the muscle of all the fish species. Highest concentrations of Cd (4.50), Cr (17.1) and Pb (41.2) were measured in liver tissues of T. cuculus, Sardina pilchardus and A. hepsetus, respectively. The liver of M. cephalus showed strikingly high Cu concentrations (202.8). The gill of Scomberesox saurus was the only tissue that showed highest (885.5) iron concentrations. Results of linear regression analysis showed that, except in a few cases, significant relationships between metal concentrations and fish size were negative. Highly significant (P<0.001) negative relationships were found between fish length and Cr concentrations in the liver of A. hepsetus and M. cephalus, and Cr concentrations in the gill of T. cuculus. Cr and Pb concentrations in the liver and Cu concentrations in all the tissues of Scomberesox saurus also showed very significant (P<0.001) negative relationships. Negative relationships found here were discussed

The Soviet Air Force and Strategic Bombing

Science.gov (United States)

1999-04-01

to envision a British Air Force that could be totally divorced from some form of ground support role. Consequently, he saw an air campaign that would...CA: Presidio Press, 1986. Black, Steven K. The Icarus Illusion: Technology, Doctrine and the Soviet Air Force. Monterrey , CA, 1986. Cockburn, Andrew

Managing International Consulting Projects and International Business Courses Using Virtual Teams

Science.gov (United States)

Prachyl, Cheryl; Quintanilla, Hector; Gutiérrez, Luis Antonio

2011-01-01

The Instituto Tecnologico y de Estudios Superiores de Monterrey and Texas Wesleyan University used technology based courses to enhance internationalization of their curricula. These courses required students to use computer technology as the distance communication medium and to complete an applied international consulting project as part of each…

Faculty Best Practices Using Blended Learning in E-Learning and Face-to-Face Instruction

Science.gov (United States)

Mortera-Gutierrez, Fernando

2006-01-01

Presenting a higher education case study from Mexico: "Instituto Tecnologico y de Estudios Superiores de Monterrey" (ITESM-CCM) College, Mexico city campus, describing faculty best and worst practices using a blended learning approach in e-learning and face-to-face instruction. The article comments on conceptual definitions of blended…

CONCENTRACION DE VITAMINA C EN PECES PELAGICOS PEQUEÑOS Y RESPUESTA DE EFECTORES DE INMUNIDAD INNATA Y ANTIOXIDANTE DURANTE LA ESTACION DE DESOVE EN EL AREA DE SURGENCIAS DE CHILE CENTRO-SUR

OpenAIRE

KRAUTZ BORQUEZ, MARIA CRISTINA; KRAUTZ BORQUEZ, MARIA CRISTINA

2011-01-01

Este estudio abordó la variabilidad en la calidad de alimento, entendida como la composición de macromoléculas y de sustancias esenciales (e.g. vitaminas), y su disponibilidad, en distintos aspectos de la reproducción/fisiología de las poblaciones de peces pelágicos pequeños (Strangomera bentincki, sardina común y Engraulis ringens, anchoveta) endémicos del Sistema de Corrientes de Humboldt. Para ello, se determinó la composición bioquímica (proteínas, aminoácidos libres, lípid...

"El Niño 1997-98": su efecto sobre el ambiente y los recursos pesqueros en el Perú

Directory of Open Access Journals (Sweden)

Marco Espino

2014-06-01

Full Text Available Se presenta una reseña de los efectos del fenómeno "El Niño 1997-98" en los recursos pesqueros del ecosistema de afloramiento peruano, dando especial énfasis a los cambios en los patrones de distribución y abundancia de los recursos anchoveta, sardina y merluza; ya los cambios en la autoecología de los mismos recursos. Finalmente, se comenta sobre las similitudes y diferencias de los efectos de este fenómeno con otros eventos de la misma naturaleza.

Detection of a diverse marine fish fauna using environmental DNA from seawater samples

DEFF Research Database (Denmark)

Thomsen, Philip Francis; Kielgast, Jos; Iversen, Lars Lønsmann

2012-01-01

eDNA from 15 different fish species, including both important consumption species, as well as species rarely or never recorded by conventional monitoring. We also detect eDNA from a rare vagrant species in the area; European pilchard (Sardina pilchardus). Additionally, we detect four bird species....... Records in national databases confirmed the occurrence of all detected species. To investigate the efficiency of the eDNA approach, we compared its performance with 9 methods conventionally used in marine fish surveys. Promisingly, eDNA covered the fish diversity better than or equal to any of the applied...

Rationales Shaping International Linkages in Higher Education: A Qualitative Case Study of the ASU-ITESM Strategic Alliance

Science.gov (United States)

Camacho Lizarraga, Monica Irene

2011-01-01

This qualitative case study examines the rationales of the relationship between Arizona State University (ASU)--an American public research university--and Tecnologico de Monterrey (ITESM), a Mexican private not for profit research university. The focus of the study is to document the different meanings participants attached to the rationales of…

Workshop II On Unsteady Separated Flow Proceedings

Science.gov (United States)

1988-07-28

particularly for the higher incidence around finite-aspect-ratio wings using a angles, cannot be divorced from the wing as an two-dimensional approximation is...in Pitch", AIAA Paper No. 87-2493, presented at the AIAA Atmospheric Flight Mechanics Conference, Monterrey , CA., August 17-19, 1987. 6. Malcolm, G

The American Military and the Far East, Proceedings of the Ninth Military History Symposium, United States Air Force Academy, 1-3 October 1980,

Science.gov (United States)

1980-10-01

movies and social dances had so permeated the country that many Chinese were influenced by the Western notion that marriage, or for that matter divorce ...34The Monterrey Campaign" of Zachary Taylor in the Mexican War.3 The nearest thing to an official history, The Philippine Insurrection Against the

77 FR 11586 - Certain Toner Cartridges and Components Thereof

Science.gov (United States)

2012-02-27

...., Ltd., d/b/a Huebon Co., Limited, d/b/a Ink-Tank, 3/F, No. 1 Industrial Building, Pingdong 2 Road....V., Avenida del Parque 1175, Monterrey Technology Park, Cienega de Flores, Nuevo Leon, Mexico 65550...., 7611 Green Meadows Drive, Lewis Center, OH 43035. Discount Office Items, Inc., 302 Industrial Drive...

77 FR 12325 - Certain Toner Cartridges and Components Thereof Corrected Notice of Institution of Investigation

Science.gov (United States)

2012-02-29

...., Ltd., d/b/a Huebon Co., Limited, d/b/a Ink-Tank, 3/F, No. 1 Industrial Building, Pingdong 2 Road....V., Avenida del Parque 1175, Monterrey Technology Park, Cienega de Flores, Nuevo Leon, Mexico 65550...., 7611 Green Meadows Drive, Lewis Center, OH 43035. Discount Office Items, Inc., 302 Industrial Drive...

Quimeras. Presentación

Directory of Open Access Journals (Sweden)

Julio Premat

2008-07-01

Full Text Available Si a una cabeza humana,muy peinada a la moda y muy galana,le añadiera un pintor plumas de galloy un pescuezo de burro o de caballo ;si juntando las piezas desigualesde varios animalespor último en el lienzo retratarauna mujer de lindo talle y caracon alas de avestruz o de gallinay cola de merluza o de sardina,¿quién, amigos Pisones,dejara de reírse a borbotones ?Pues a este lienzo semejante fuera,el poema o quimera,cuyas partes sin tino colocadas,no fuesen a una forma conspiradas [...]Félix...

A Brief Survey of the Team Software ProcessSM (TSPSM)

Science.gov (United States)

2011-10-24

de Estudios Superiores de Monterrey Siemens AG SILAC Ingenieria de Software S.A. de C.V...S.A. de C.V. Delivery Excellence Grupo Empresarial Eisei, S.A. de C.V. Herbert Consulting Hitachi Software Engineering Co., Ltd. Idea Entity Corp...SKIZCorp Technology Software Engineering Competence Center (SECC) Software Park Thailand STPP, Inc. TOWA INTEGRADADORA S.A. de C.V. TRX

Why Collect Retrospective Data?

Science.gov (United States)

1981-12-01

condition after the beginning of the study period. Divorce , unemployment, contraceptive use, morbidity, and malnutrition are such conditions whose future... Monterrey Mobility Study documented migration histories. The 1971 Social Accounts Study at Johns Hopkins University included a much broader...food used; cohabitation, marriage, separation, and divorce ; types of roof, walls, and floors of all houses, as well as ownership status, rent (if

Journal of Genetics | Indian Academy of Sciences

Indian Academy of Sciences (India)

Laboratorio de Citogenómica y Microarreglos, Departamento de Bioquímica y Medicina Molecular, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León 64460, México; Unidad de Biología Molecular, Genómica y Secuenciación, Centro de Investigación y Desarrollo en Ciencias de la Salud ...

Mass shift of σ-meson in nuclear matter

Indian Academy of Sciences (India)

Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Nuevo León, UANL, Av. Universidad S/N Ciudad Universitaria, San Nicolás de los Garza, Nuevo León, C.P. 66451, México; Facultad de Ingeniería y Arquitectura, Universidad Regiomontana, 15 de Mayo 567, Monterrey, N.L., 64000, México ...

Delimitación de zonas federales y áreas de amortiguamiento en ríos afectados por el crecimiento urbano como estrategia para prevenir inundaciones

Directory of Open Access Journals (Sweden)

Adrián Leonardo Ferriño Fierro

2015-12-01

Full Text Available En la actualidad, debido al crecimiento de las zonas urbanas y la ocupación de las márgenes de los ríos en las ciudades, vivimos en constante riesgo, invirtiendo enormes cantidades de recursos económicos en reconstrucciones y apoyo a damnificados por las inundaciones. Si bien las inundaciones son eventos naturales que se presentan en todo el mundo, sus consecuencias pueden variar según características de desarrollo histórico, socioeconómicas y culturales de las ciudades, y del respeto de las áreas hidráulicas y zonas de amortiguamiento de sus corrientes de agua. En la presente investigación, se desarrolló una propuesta para determinar áreas de amortiguamiento en ríos afectados por el crecimiento urbano para prevenir inundaciones, basada en aspectos técnicos, legales y ambientales. El caso de estudio fue el río Pesquería dentro de la zona metropolitana de Monterrey al cruzar por los municipios de García, Monterrey, General Escobedo, Apodaca, y Pesquería, Nuevo León.

Documentation and Testing of the WEAP Model for the Rio Grande/Bravo Basin

Science.gov (United States)

2006-08-01

border between Texas and the Mexican states of Coahuila, Nuevo Leon and Tamaulipas (Appendix B, Figure 32). There are four reservoirs of interest in this...Camargo - Ciudad Acuna - Ciudad Anhuac - Ciudad Juarez - Matamoros - Metropolitan Monterrey - Nuevo Laredo - Reynosa - Piedras Negras...Rivera, and Jorge A. Hidalgo. (2001). “Sistema de apoyo a la toma de decisions para el manejo integral del agua en cuencas.” IMTA/CNA, Proyecto

Acquisition Research: Creating Synergy for Informed Change. Proceedings of the Annual Acquisition Research Symposium (3rd) Held in Monterey, California on 17-18 May 2006

Science.gov (United States)

2006-04-30

Report NPS-GSBPP-04- 008). Monterrey , CA: Naval Postgraduate School. Huxham, C. (1996). Collaboration and collaborative advantage. In C. Huxham (Ed...family courts are referring more and more cases of family disputes ( divorce /child support) to mediation; some local courts require mediation prior...problem with this idea, but divorced of capital asset decisions, keeping PPBE as a budgeting system seems overly bureaucratic. What system the remaining

Phenological and distributional shifts in ichthyoplankton associated with recent warming in the northeast Pacific Ocean.

Science.gov (United States)

Auth, Toby D; Daly, Elizabeth A; Brodeur, Richard D; Fisher, Jennifer L

2018-01-01

Understanding changes in the migratory and reproductive phenology of fish stocks in relation to climate change is critical for accurate ecosystem-based fisheries management. Relocation and changes in timing of reproduction can have dramatic effects upon the success of fish populations and throughout the food web. During anomalously warm conditions (1-4°C above normal) in the northeast Pacific Ocean during 2015-2016, we documented shifts in timing and spawning location of several pelagic fish stocks based on larval fish samples. Total larval concentrations in the northern California Current (NCC) during winter (January-March) 2015 and 2016 were the highest observed since annual collections first occurred in 1998, primarily due to increased abundances of Engraulis mordax (northern anchovy) and Sardinops sagax (Pacific sardine) larvae, which are normally summer spawning species in this region. Sardinops sagax and Merluccius productus (Pacific hake) exhibited an unprecedented early and northward spawning expansion during 2015-16. In addition, spawning duration was greatly increased for E. mordax, as the presence of larvae was observed throughout the majority of 2015-16, indicating prolonged and nearly continuous spawning of adults throughout the warm period. Larvae from all three of these species have never before been collected in the NCC as early in the year. In addition, other southern species were collected in the NCC during this period. This suggests that the spawning phenology and distribution of several ecologically and commercially important fish species dramatically and rapidly changed in response to the warming conditions occurring in 2014-2016, and could be an indication of future conditions under projected climate change. Changes in spawning timing and poleward migration of fish populations due to warmer ocean conditions or global climate change will negatively impact areas that were historically dependent on these fish, and change the food web structure

Consumo de alcohol en trabajadores de una industria en Monterrey, México Consumo de álcool em trabalhadores de uma indústria em Monterrey, México Alcohol consumption among industrial workers in Monterrey , Mexico

Directory of Open Access Journals (Sweden)

Teresita de Jesús Campa Magallón

2005-10-01

Full Text Available El objectivo fue describir el consumo de alcohol en 129 trabajadores de una industria. La recolección de datos se realizó a través de los cuestionarios AUDIT y CECA. El mayor consumo fue en operarios masculinos con 31 años de edad, 9,8 años de escolaridad, 5 años de antigüedad laboral, casados, con consumo de 3 a 4 bebidas por ocasión (38,5%. Un consumo de 6 copas o más al mês se presentó en 32,7% de los operarios. La frecuencia de consumo mensual fue de 2 o 4 veces. 46,5% fueron considerados dependientes. Ocurrieron daños en 55% de los operarios y empleados. Los empleados refirieron consumo de alcohol en reuniones sociales con compañeros (63,6%. Los consecuencies del consumo fueron: cansancio físico (44,2%, problemas físicos (29,5%, disminución de rendimiento laboral (29,5% y la disminución de reflejos (21,7%. Delante del mayor consumo de alcohol, los trabajdores perciben menores consecuencias respecto a este consumo. Los que refirieron el no consumo se encontraban en la etapa de precontemplación.O objetivo foi descrever o consumo de álcool entre 129 trabalhadores de uma indústria. A coleta de dados foi realizada a través dos instrumentos AUDIT e CECA. A maior porcentagem de consumo foi em operários masculinos de 31 anos, escolaridade de 9,8 anos, tempo de trabalho 5 anos, casados. Identificou-se um consumo de 3 a 4 bebidas por ocasião (38,5%. Obteve-se o consumo de 6 copos ou mais por mês em 32,7% dos operários. A freqüência de consumo mensal foi de 2 ou 4 vezes, a dependência correspondeu a 46,5% e a ocorrência de danos a 55% dos operários e empregados. Os trabalhadores informaram consumo de álcool em encontros sociais com amigos (63,6%. As conseqüências desse consumo foram: cansaço físico (44,2%, problemas físicos (29,5%, diminuição do rendimento de trabalho (29,5% e diminuição de reflexos (21,7%. Diante de um maior consumo de álcool, os trabalhadores percebem menores conseqüências em relação a este consumo. Os que referiram não consumir álcool encontravam-se na etapa de pré-contemplação.This study aimed to describe alcohol consumption among 129 industrial workers. Data were collected by means of the instruments called AUDIT and CECA. The highest consumption rates were for 31-year old male workers, with 9.8 years of education, 5 years of work experience and married. The average consumption per occasion was between 3 and 4 drinks for 38.5%. 32.7% of the workers consumed 6 or more glasses per month. Consumption frequency per month was 2 or 4 times, 46.5% were dependent and damage had occurred in 55% of the workers and employees. The workers mentioned alcohol consumption during social meetings with friends (63.6%. Consequences of consumption were: physical fatigue (44.2%, physical problems (29.5%, decreased work performance (29.5% and decreased reflexes (21.7%. The higher the alcohol consumption levels, the smaller the consequences of this consumption perceived by workers. Those workers mentioning that they did not consume alcohol were in the pre-contemplation stage.

Testing spatial heterogeneity with stock assessment models

DEFF Research Database (Denmark)

Jardim, Ernesto; Eero, Margit; Silva, Alexandra

2018-01-01

sub-populations and applied to two case studies, North Sea cod (Gadus morua) and Northeast Atlantic sardine (Sardina pilchardus). Considering that the biological components of a population can be partitioned into discrete spatial units, we extended this idea into a property of additivity of sub......, the better the diffusion process will be detected. On the other hand it showed that weak to moderate diffusion processes are not easy to identify and large differences between sub-populations productivities may be confounded with weak diffusion processes. The application to North Sea cod and Atlantic sardine...... exemplified how much insight can be gained. In both cases the results obtained were sufficiently robust to support the regional analysis....

La educación en la sociedad informatizada

Directory of Open Access Journals (Sweden)

Héctor Schmucler

2015-01-01

Full Text Available Al iniciarse 1981, se anunciaba que una escuela primaria de México comenzaba a utilizar la computadora como apoyo para la enseñanza. Los estudiantes del Colegio Montessori en Monterrey se beneficiaban de la donación efectuada por el padre de uno de ellos, quien había obsequiado una computadora TRS-80 Radio Shack. La técnica de utilización fue presentada por el gerente general de Radio Shack Computerland de Monterrey, padre, a su vez, de niños "con la suficiente edad para aprovechar la computadora". La noticia técnico-familiar daba cuenta del primer paso de un proceso que seguramente tenderá a expandirse aceleradamente y que ya se ha propagado de manera explosiva aunque contradictoria en el llamado mundo   industrializado. Un ejemplo anterior en América Latina había sido la escuela "Nido de Águilas" en Santiago de Chile, una organización privada presidida por el gerente de la Burroughs chilena. A su vez, el primer intento masivo de incorporación de la computadora en la enseñanza elemental está ofrecido seguramente por un ambicioso plan expuesto por el gobierno argentino en los primeros meses de 1982.

Pantallas para ver el mundo. Estereotipación televisiva de la población indígena mexicana y generación de prejuicio

Directory of Open Access Journals (Sweden)

C Muñiz

2013-04-01

Full Text Available Introducción. Los estereotipos son creencias estructuradas socialmente sobre un grupo social concreto, que pueden derivar del contacto directo o indirecto con miembros de ese grupo. En este sentido, se ha planteado que los medios de comunicación pueden generar un proceso de estereotipación que conlleva la activación de estereotipos que impactan en actitudes más o menos prejuiciosas. Objetivos. El estudio busca estudiar si este proceso se produce con respecto a la población indígena mexicana, en el contexto de la Zona Metropolitana de Monterrey. Metodología. Se realizó un estudio en dos fases: en la primera se analizó mediante un análisis de contenido los estereotipos mediáticos de los indígenas en los programas de ficción de la televisión; en la segunda se evaluó mediante una encuesta la relación entre las creencias y la actitud prejuiciosa demostrada hacia la población indígena por los estudiantes de bachillerato de la zona metropolitana de Monterrey. Conclusiones. Los resultados reflejan el impacto del consumo y de los estereotipos sobre el nivel de prejuicio mantenido, pero no así un proceso de estereotipación.

Proceedings of the International Congress (12th), Corrosion Control for Low-Cost Reliability, Held in Houston, Texas on September 19 -24, 1993. Volume 3B. Corrosion: Specific Issues

Science.gov (United States)

1993-09-24

de Quimica Pura y Aplicada, Monterrey N.L., 1990. No. 47. 3.- 8. Valdez, G. Guerra, J. Sampedro, N. Rosas. CORROSION, Vol. 2, No. 3, 1991, pp. 11-15...AISI 304L AND 316L STAINLESS STEELS PREPARED BY POWDER METALLURGY. E. Otero Departamento de Ciencia de Materiales Facultad de Ciencias Quimicas ...Madrid, Spain. V. Utrilla Departamento de Ciencia de Materiales Facultad de Ciencias Quimicas Universidad Complutense 28040-Madrid, Spain. E. Sfienz

Offshore Financial Operations, Development Strategy or Neo-liberal Illusion? The case of the First International Bank of Grenada

Directory of Open Access Journals (Sweden)

James C. Wardally

2009-12-01

Full Text Available With declining Foreign aid flows to the region, Caribbean countries now need to intensify their focus on national and regional means of financing development. The Monterrey Consensus (2002 notes that many developing countries increasingly depend on local funds to finance their development needs. Domestic financial institutions are important in this respect, as by intermediating between savers and borrowers, they can efficiently mobilize and use society’s savings (Levine 1997.

Innovative Applications : Open Educational Resources and Mobile Resources Repository for the Instruction of Educational Researchers in Mexico

OpenAIRE

Mortera-Gutierrez, Fernando J.

2010-01-01

The movement of Open Educational Resources (OER) is one of the most important trends that are helping education through the Internet worldwide. "Tecnológico de Monterrey" (http://tecvirtual.itesm.mx/) in Mexico, with other Mexican higher education institutions, is creating an Internet/web based repository of OERs and Mobile Resources for the instruction and development of educational researchers at undergraduate, Master's and Doctoral level. There is a lack of open educational resources and m...

The Health Status of Women in the Military: An Epidemiologic Study of Active-Duty Navy and Marine Corps Personnel, Part 2

Science.gov (United States)

1996-12-01

Department of Defense Survey No. 94-004). Monterrey , CA: Author. Departments of the Army, the Navy, and the Air Force. (1985). Naval Command Medical...difficult problems have you had to handle (e.g., o Often promotion passover, divorce /separation, legal or C) Very often disciplinary act’an, bankruptcy...you widowed, separated, divorced , or have you never been married? 1) MARRIED 2) WIDOWED 3) SEPARATED 4) DIVORCED 5) NEVER MARRIED A9 Have you ever

3CV+2: modelo de calidad para la construcción de la vivienda 3CV+2: quality model for dwelling construction

Directory of Open Access Journals (Sweden)

Salvador García Rodríguez

2008-08-01

Full Text Available Este artículo presenta el modelo y los resultados que, desde Junio de 2005, se han alcanzado en el desarrollo del Programa Nacional de Certificación de los Procesos Constructivos de la Vivienda en base al Modelo 3cv+2. El programa se ha desarrollado con base a un convenio entre el Tecnológico de Monterrey y la Cámara Nacional de la Industria de Desarrollo y Promoción de Vivienda. Actualmente se encuentran voluntariamente en el programa 52 empresas inmobiliarias de diferentes estados de la República Mexicana. El modelo de calidad 3cv+2 es una metodología que busca establecer en los niveles operativos de la construcción criterios que permitan reducir la variabilidad del proceso de construcción, y además permita de manera sistemática, y en un proceso de mejora continua, evaluar el desempeño de calidad en proyectos de construcción de vivienda. El modelo 3cv+2 define en su nombre el alcance del mismo, 3 criterios de calidad para la vivienda (insumos, proceso y producto, apoyado por 2 auditorías (+2, la auditoría interna de la propia empresa, mas la auditoría externa hecha por el Tecnológico de Monterrey. El modelo 3cv+2 busca garantizar que los insumos utilizados en la construcción de las viviendas sean de calidad superior, y que los procesos de ejecución posean características de calidad, productividad, eficiencia, racionalización, y estandarización; de tal manera que insumos y productos sean de alto valor agregado, y garanticen la calidad especificada en las etapas parciales y en la vivienda terminada.This paper presents the model and the results that have been achieved during the development of the National Quality Certification Program based on the model 3cv +2 from June 2005. This program has been developed based on an agreement between the Monterrey Tech and the National Chamber of Housing Industry. Nowadays, the program has 52 voluntary real estate companies from different states of Mexico. The 3cv+2 quality model is a

A fuzzy-logic tool for multi-criteria decision making in fisheries: the case of the South African pelagic fishery

DEFF Research Database (Denmark)

Paterson, B.; Jarre, Astrid; Moloney, C.L.

2007-01-01

The present study presents an electronic decision-support tool that uses a fuzzy-logic model of expert knowledge to assist in multi-criteria decision-making in the context of an Ecosystem Approach to Fisheries (EAF). The prototype model integrates the multiple goals and objectives related...... to the evaluation of the ecosystem performance of the South African sardine Sardinops sagax fishery into a NetWeaver knowledge base and provides intuitive visual outputs to communicate results to managers and stakeholders. The software tool was developed in a consultative process with key experts and follows...... on expert opinion. Results show that the model is robust and conservative. The strength of the approach lies in the ability to include variables that are difficult to measure. It provides a means of rendering value judgements explicit and transparent. The tool synthesises a large amount of information...

Potential of Rainwater Harvesting and Greywater Reuse for Water Consumption Reduction and Wastewater Minimization

Directory of Open Access Journals (Sweden)

Miguel Ángel López Zavala

2016-06-01

Full Text Available Northeastern Mexico is a semiarid region with water scarcity and a strong pressure on water sources caused by the rapid increase of population and industrialization. In this region, rainwater harvesting alone is not enough to meet water supply demands due to the irregular distribution of rainfall in time and space. Thus, in this study the reliability of integrating rainwater harvesting with greywater reuse to reduce water consumption and minimize wastewater generation in the Tecnológico de Monterrey, Monterrey Campus, was assessed. Potable water consumption and greywater generation in main facilities of the campus were determined. Rainwater that can be potentially harvested in roofs and parking areas of the campus was estimated based on a statistical analysis of the rainfall. Based on these data, potential water savings and wastewater minimization were determined. Characterization of rainwater and greywater was carried out to determine the treatment necessities for each water source. Additionally, the capacity of water storage tanks was estimated. For the selected treatment systems, an economic assessment was conducted to determine the viability of the alternatives proposed. Results showed that water consumption can be reduced by 48% and wastewater generation can be minimized by 59%. Implementation of rainwater harvesting and greywater reuse systems in the Monterrey Campus will generate important economic benefits to the institution. Amortization of the investments will be achieved in only six years, where the net present value (NPV will be on the order of US $50,483.2, the internal rate of return (IRR of 4.6% and the benefits–investment ratio (B/I of 1.7. From the seventh year, the project will present an IRR greater than the minimum acceptable rate of return (MARR. In a decade, the IRR will be 14.4%, more than twice the MARR, the NPV of US $290,412.1 and the B/I of 3.1, denoting economic feasibility. Based on these results, it is clear that

Deterioration of Early Holocene coral reef due to sea level rise along west coast of India: Benthic foraminiferal testimony

Digital Repository Service at National Institute of Oceanography (India)

Mazumder, A.; Nigam, R.; Henriques, P.J.

and constituting the main components of the carbonate beach sands: Examples from Ryukyu archipelago, in: Proceeding FORAMS’98 – International Symposium on Foraminifera. Monterrey, Mexico. Kaminski, M.A., Aksu, A., Box, M., Hiscott, R.N., Filipescu, S., Al..., B., 1991. Climatic trends and variability, in: Jager, J., Ferguson, H.L. (Eds.), Climate change, Science, Impact and Policy. Proc. II World Climate Conference, pp. 71-82. Daniel, A., 1972. Marine intertidal barnacles in the Indian Ocean. Proceeding...

Entrepreneurs’ Responses to Organized Crime and Violence

OpenAIRE

Ramirez, Jacobo; Gómez, Sergio Manuel Madero; Muñiz, Carlos

2014-01-01

This research aims to investigate the various direct and indirect impacts of organized violence and crime on small and medium-sized enterprises (SMEs), as well as entrepreneurs’ responses to violent acts. A mixed-method design based on a quantitative content analysis of 204 news stories found in the international press and a multi-case study covering 10 SMEs operating in Monterrey, Mexico, is used to explore entrepreneurs’ responses to the direct and indirect effects of viol...

Psychological, interpersonal, and clinical factors predicting time spent on physical activity among Mexican patients with hypertension

OpenAIRE

Ybarra Sagarduy, José Luis; Camacho Mata, Dacia Yurima; Moral de la Rubia, José; Piña López, Julio Alfonso; Yunes Zárraga, José Luis Masud

2018-01-01

José Luis Ybarra Sagarduy,1 Dacia Yurima Camacho Mata,1 José Moral de la Rubia,2 Julio Alfonso Piña López,3 José Luis Masud Yunes Zárraga4 1Unit of Social Work and Human Development, Autonomous University of Tamaulipas, Ciudad Victoria, 2School of Psychology, Autonomous University of Nuevo Leon, Monterrey, 3Independent Researcher, Hermosillo, 4Institute of Health and Safety Services for State Workers, Clinic for the Study and ...

Maltrato entre pares o acoso escolar (bullying). ¿Debemos enfrentar el problema cuando la tragedia es inevitable?

OpenAIRE

Arturo Loredo-Abdalá; Abigail Casas-Muñoz

2017-01-01

Como consecuencia del lamentable evento acaecido a mediados del mes de enero de 2017 en la ciudad de Monterrey, Nuevo León, y el cual ha desencadenado una serie de opiniones gubernamentales, en los medios de comunicación electrónica y escrita, así como en algunos grupos de la sociedad civil de México, primordialmente surge la siguiente pregunta: ¿es que ante estos eventos, los mexicanos y, específicamente, los pediatras debemos reaccionar?

Nontypeable Haemophilus influenzae in chronic obstructive pulmonary disease and lung cancer

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Seyed Javad Moghaddam

2011-01-01

Full Text Available Seyed Javad Moghaddam1, Cesar E Ochoa1,2, Sanjay Sethi3, Burton F Dickey1,41Department of Pulmonary Medicine, the University of Texas MD Anderson Cancer Center, Houston, TX, USA; 2Tecnológico de Monterrey School of Medicine, Monterrey, Nuevo León, Mexico; 3Department of Medicine, University at Buffalo, State University of New York, Buffalo, NY, USA; 4Center for Inflammation and Infection, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, TX, USAAbstract: Chronic obstructive pulmonary disease (COPD is predicted to become the third leading cause of death in the world by 2020. It is characterized by airflow limitation that is not fully reversible. The airflow limitation is usually progressive and associated with an abnormal inflammatory response of the lungs to noxious particles and gases, most commonly cigarette smoke. Among smokers with COPD, even following withdrawal of cigarette smoke, inflammation persists and lung function continues to deteriorate. One possible explanation is that bacterial colonization of smoke-damaged airways, most commonly with nontypeable Haemophilus influenzae (NTHi, perpetuates airway injury and inflammation. Furthermore, COPD has also been identified as an independent risk factor for lung cancer irrespective of concomitant cigarette smoke exposure. In this article, we review the role of NTHi in airway inflammation that may lead to COPD progression and lung cancer promotion.Keywords: COPD, NTHi, inflammation

Educating Transformational Leaders in Mexico at Universidad De Monterrey

Science.gov (United States)

Cantón, Alicia

2016-01-01

Mexico faces numerous social, economic, and political challenges. Higher education institutions provide opportunity for change by educating socially responsible leaders to become civically engaged citizens.

Optimization of α-tocopherol and ascorbyl palmitate addition for the stabilization of sardine oil

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Morales-Medina, R.

2015-06-01

Full Text Available The purpose of the present work was to optimize the addition of natural antioxidants (α- tocopherol and ascorbyl palmitate for the stabilization of sardine oil rich in omega-3 PUFA. The optimal values for peroxide value (PV, which minimizes primary oxidation products, were obtained at low concentrations of α-tocopherol (50–207 ppm, high content of ascorbyl palmitate (450 ppm and 50 ppm citric acid. On the other hand, optimal values for p-anisidine value (AV, which minimizes secondary oxidation products, were found at medium concentrations of α-tocopherol (478–493 ppm, high contents of ascorbyl palmitate (390–450 ppm and 50 ppm citric acid. The conflicting effect of α-tocopherol on the individual optimization of PV and AV motivated the generation of a Pareto front (set of non inferior solutions employing the weighted-sum multi-objective optimization technique.El objetivo de este trabajo fue optimizar la adición de antioxidantes naturales (α-tocoferol y palmitato de ascorbilo para la estabilización de aceite de sardina rico en omega-3 PUFA. Bajas concentraciones de α-tocoferol (50–207 ppm combinadas con la adicción de antioxidantes secundarios como palmitato de ascorbilo (450 ppm y ácido cítrico (50 ppm, minimizaron la formación de hidroperóxidos en el aceite de sardina estudiado. Sin embargo, los productos secundarios de oxidación se redujeron para concentraciones medias de α-tocoferol (478–493 ppm, altas de palmitato de ascorbilo (390–450 ppm y 50 ppm de ácido cítrico. El efecto contradictorio de la concentración de α-tocoferol en la optimización individual del índice de peróxidos e índice de p-anisidina motivó la realización de una optimización simultánea que permite satisfacer la optimización de cada una de las variables individuales en el grado deseado.

ESTIMACIÓN DE PARÁMETROS EN MODELOS NO LINEALES: ALGORITMOS Y APLICACIONES

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Óscar Cornejo Zúñiga

Full Text Available En este artículo se muestran diferentes algoritmos para estimar parámetros en modelos no lineales. Se aplican primeramente a una base de datos de problemas clasificados difíciles. Posteriormente, se muestra el comportamiento de los algoritmos para el estudio de crecimiento de la merluza común en machos y hembras, anchoveta y sardina común ajustando un modelo de Von Bertalanffy. Se aplica el test de Cerrato para la comparación de crecimientos entre géneros para la merluza común. Los algoritmos se implementaron en ambiente MATLAB presentando un buen comportamiento en cuanto a tiempo CPU, número de iteraciones y exactitud de la solución encontrada respecto de valores certificados de los problemas de la base de datos.

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Pola Becerril-Montes

2013-04-01

Full Text Available The resistance of 139 Mycobacterium tuberculosis (MTB isolates from the city of Monterrey, Northeast Mexico, to first and second-line anti-TB drugs was analysed. A total of 73 isolates were susceptible and 66 were resistant to anti-TB drugs. Monoresistance to streptomycin, isoniazid (INH and ethambutol was observed in 29 cases. Resistance to INH was found in 52 cases and in 29 cases INH resistance was combined with resistance to two or three drugs. A total of 24 isolates were multidrug-resistant (MDR resistant to at least INH and rifampicin and 11 MDR cases were resistant to five drugs. The proportion of MDR-TB among new TB cases in our target population was 0.72% (1/139 cases. The proportion of MDR-TB among previously treated cases was 25.18% (35/139 cases. The 13 polyresistant and 24 MDR isolates were assayed against the following seven second-line drugs: amikacin (AMK, kanamycin (KAN, capreomycin (CAP, clofazimine (CLF, ethionamide (ETH, ofloxacin (OFL and cycloserine (CLS. Resistance to CLF, OFL or CLS was not observed. Resistance was detected to ETH (10.80% and to AMK (2.70%, KAN (2.70% and CAP (2.70%. One isolate of MDR with primary resistance was also resistant to three second-line drugs. Monterrey has a high prevalence of MDR-TB among previously treated cases and extensively drug-resistant-MTB strains may soon appear.

A population-based study of first and second-line drug-resistant tuberculosis in a high-burden area of the Mexico/United States border

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Pola Becerril-Montes

2013-04-01

Full Text Available The resistance of 139 Mycobacterium tuberculosis (MTB isolates from the city of Monterrey, Northeast Mexico, to first and second-line anti-TB drugs was analysed. A total of 73 isolates were susceptible and 66 were resistant to anti-TB drugs. Monoresistance to streptomycin, isoniazid (INH and ethambutol was observed in 29 cases. Resistance to INH was found in 52 cases and in 29 cases INH resistance was combined with resistance to two or three drugs. A total of 24 isolates were multidrug-resistant (MDR resistant to at least INH and rifampicin and 11 MDR cases were resistant to five drugs. The proportion of MDR-TB among new TB cases in our target population was 0.72% (1/139 cases. The proportion of MDR-TB among previously treated cases was 25.18% (35/139 cases. The 13 polyresistant and 24 MDR isolates were assayed against the following seven second-line drugs: amikacin (AMK, kanamycin (KAN, capreomycin (CAP, clofazimine (CLF, ethionamide (ETH, ofloxacin (OFL and cycloserine (CLS. Resistance to CLF, OFL or CLS was not observed. Resistance was detected to ETH (10.80% and to AMK (2.70%, KAN (2.70% and CAP (2.70%. One isolate of MDR with primary resistance was also resistant to three second-line drugs. Monterrey has a high prevalence of MDR-TB among previously treated cases and extensively drug-resistant-MTB strains may soon appear.

Effect of natural antioxidants on the quality of frozen sardine fillets (Sardina pilchardus

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Rui Manuel Maneta Ganhão

2014-06-01

Full Text Available The use of new technologies / processes provides different benefits on seafood sector, namely by enhanced the shelf-life of fish products with high polyunsaturated fatty acid composition. This is particularly critical during some months of the year when fish (e.g. sardines are larger supply than demand by consumers. The aim of this study was to performed the optimization process of adding natural antioxidants on frozen sardine fillets and evaluated the effect of addition of two natural antioxidants on the lipid oxidation process during storage at -200C. To evaluate the effect of the addition of antioxidants in sardine fillets, the product matrix was chemical characterized, including by the evaluation of the fatty acid profile. The lipid oxidation process was followed by the primary products (peroxide value and secondary products (TBARS quantification, and also by the analysis of the sensory changes (instrumental assessment of color. Finally, it was done a hedonic preference test to know the opinion of consumers about the frozen fillets with and without antioxidant. The natural antioxidants used, tocopherol (54 mg/fillet and tocopherols (15 mg/fillet with rosemary extract (6.5 mg/fillet inhibited or retarded the oxidation over time of storage when compared with the control samples, that had advanced oxidation process. There was not statistically differences among the fillets treated with tocopherol in the presence and absence of rosemary extract. However, our laboratorial results shown slight tendency for the view that the antioxidant tocopherols and rosemary extract had a greater effect on the oxidative stability of fillets. This observation is in line with results of the hedonic test consumer preference. The use of natural antioxidants is an inexpensive solution which allows the complete use of products with less waste of fish products and with a great need for disposal. At the same time meets the consumer´s requirements.

Fish larvae from the Gulf of California

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Gerardo Aceves-Medina

2003-03-01

Full Text Available Taxonomic composition of fish larvae was analysed from 464 plankton samples obtained during 10 oceanographic surveys in the Gulf of California between 1984 and 1988. We identified 283 taxa: 173 species, 57 genera, and 53 families. Tropical and subtropical species predominated except during the winter, when temperate-subarctic species were dominant. The most abundant species were the mesopelagic Benthosema panamense, Triphoturus mexicanus and Vinciguerria lucetia, but the coastal pelagic species Engraulis mordax, Opisthonema spp., Sardinops caeruleus and Scomber japonicus were also prominent. The taxonomic composition of the ichthyoplankton shows the seasonality of the Gulf as well as environmental changes that occurred between the 1984-1987 warm period and the 1956-1957 cool period previously reported. The presence of E. mordax larvae as one of the most abundant species in the Gulf provides evidence of the reproduction of this species two years before the development of the northern anchovy fishery and the decline of the sardine fishery in the Gulf of California.

Un conocer sin cegamientos

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Carolina Ferrante

2015-08-01

Full Text Available En el presente artículo se reseña el libro La construcción de marcas de reconocimiento en sociedades ocularcentristas: el caso de mujeres ciegas del Área Metropolitana de Monterrey de Brenda Araceli Bustos García. Se describe el problema de investigación en el cual se inserta la tesis que nutre el libro y se recorre la trama argumental. Finalmente, se realiza una valoración positiva del modo de construcción del objeto de estudio, el cual promueve un conocer sin cegamientos. 

Buenas prácticas para la selección de recursos educativos abiertos: experiencias del MOOC innovación educativa con REA

OpenAIRE

Acuña Sossa, Mildred; Gil Rendón, María Eugenia; Sandoval Poveda, Alicia María

2016-01-01

El artículo expone la indagación acerca de los Recursos Educativos Abiertos (REA) con la colaboración interuniversitaria entre el Instituto Tecnológico de Estudios Superiores de Monterrey, México, y la Universidad Estatal a Distancia de Costa Rica. Esta temática ha sido poco estudiada y ambas universidades se vieron en la necesidad de conocer cómo se realiza la selección de estos recursos. Asimismo, expresa las buenas prácticas de selección de REA utilizadas por los participantes en el curso ...

Las cibercampañas independientes

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Lic. Carlos Enrique López C.

2000-01-01

Full Text Available Los tres investigadores mexicanos del Instituto Tecnológico de Monterrey nos ilustran sobre manipulaciones realizadas a través de Internet, mediante mensajes de coreo falsos o injuriosos y acerca de sitiosweb intoxicados y manipulados políticamente. Dada las cercanías de las elecciones mexicanas, este artículo -aunque programado para Latina de septiembre- se publica en junio, en la nota de Novedades del lunes 26 de junio de 2000, aunque se mantiene originalmente en la revista Latina número 33 de septiembre.

Conceptions on the Teaching of Subtraction: A study Focused on an in-Service Teacher Training Course

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Mario Martínez Silva

2004-05-01

Full Text Available This paper reports a research about a group of in-service teachers working in primary public schools in a poor urban zone in Monterrey city, Mexico. Its main aim was to study teachers’ conceptions about the teaching of subtraction and, in particular, to know more about the role that they assign to context and contextualizing in the teaching process. Broadly speaking, the research arose from the interest to know more about the relationship between the training and education in mathematics of primary teachers and how the teaching and learning of mathematics actually takes place at school.

CONSUMO DE ALCOHOL EN JOVENES Y SU RELACION CON LA VIOLENCIA PSICOLOGICA EN EL NOVIAZGO

OpenAIRE

Francisco Rafael Guzmán Facundo; Santiaga Enriqueta Esparza Almanza; Selene Alejandra Alcántara Rodríguez; Ivonne Yazmín Escobedo Robles; Tannia Henggeler Hernández

2009-01-01

Un problema relacionado con el abuso de alcohol en jóvenes es la violencia. Los objetivos del estudio fueron: describir la prevalencia del consumo de alcohol, así como la clasificación del consumo en jóvenes, conocer la proporción de mujeres que han sufrido violencia psicológica, la proporción de hombres que han ejercido violencia psicológica y conocer la relación del consumo de alcohol y la violencia psicológica durante el noviazgo en jóvenes de Monterrey, NL, México. Se empleó un diseño de...

Boca de Potrerillos

Science.gov (United States)

Murray, William Breen

Boca de Potrerillos is an archaeological site located in the municipio of Mina, Nuevo León, about 60 km. northwest of Monterrey, Mexicós third largest city. Its principal feature is one of the largest concentrations of petroglyphs in the country. Archaeoastronomical features include petroglyphic markers of the cardinal directions, dot configurations which count lunar synodic periods, and one of the earliest horizon calendars in North America. They indicate that the site was probably used for sky observation from the Middle Archaic time period onward and may represent evidence of the initial stages in the development of Mesoamerican numeration and astronomy.

Satisfacción de las madres con la atención a sus hijos hospitalizados

OpenAIRE

María Guadalupe Moreno-Monsiváis; María Guadalupe Interial-Guzmán; Paz Francisco Sauceda-Flores; Leticia Vázquez-Arreola; Julia Teresa López-España

2011-01-01

El objetivo del estudio fue determinar los factores que se relacionan con la satisfacción de la madre con la atención que recibe su hijo hospitalizado. La muestra: 127 madres de niños hospitalizados en una institución pública de Monterrey, N.L., México. Estudio descriptivo correlacional. Se utilizó el cuestionario de satisfacción del familiar pediátrico. El manejo del dolor fue un factor importante para la satisfacción de las madres participantes. La satisfacción de la madre con el servicio d...

La formación de los ciudadanos: el papel de la televisión y la comunicación humana en la socialización política

OpenAIRE

Juan Enrique Huerta Wong; Eduardo García

2008-01-01

¿Cómo se están formando los futuros ciudadanos? ¿Cuáles son sus actitudes respecto a la participación ciudadana, el interés por los asuntos públicos? ¿Qué papel juegan agentes mediadores tales como los medios de comunicación y la familia? Este trabajo reporta los hallazgos de 1382 entrevistas porencuesta, realizadas entre marzo y mayo de 2006, en niños de sexto año de primaria de Monterrey, Saltillo y Cd. Victoria, México. Los datos se analizaron mediante modelos de análisis de trayectori...

Comportamiento mecánico del concreto reforzado con fibras de bagazo de caña de azúcar

OpenAIRE

Espinoza Carvajal, Marlon Jonathan

2015-01-01

El tema de investigación que a continuación vamos a describir se centra en el estudio de la incorporación de fibras naturales a una matriz de cemento. Primeramente se evaluó el Estado del Arte, verificando la existencia de estudios que tenga similitud con el tema y sirvan de referentes. Ya en campo empezamos con la recolección de la fibra natural en el Ingenio Monterrey, (MALCA), luego se procede con el aislamiento de la fibra por un tiempo no mayor a tres meses, esto ayuda a que la fibra...

RELACIÓN ENTRE LOS NIVELES DE AUTOESTIMA Y ESTRÉS EN ESTUDIANTES UNIVERSITARIOS

OpenAIRE

Leticia Ancer Elizondo; Cecilia Meza Peña; Edith G. Pompa Guajardo; Francisco Torres Guerrero; René Landero Hernández

2011-01-01

El presente estudio exploró la relación entre el estrés y la autoestima en 219 jóvenes de una universidad privada del área metropolitana de Monterrey (México), además de determinar si hay diferencias por género y por estatus laboral. Se utilizó la Escala de Estrés Percibido de Cohen y la Escala de Autoestima de Rosenberg, ambas en formato electrónico. Los resultados obtenidos indican la presencia de una correlación negativa entre estrés y autoestima, incrementándose en los jóvenes que solamen...

Antisocial behavior and alcohol consumption by school adolescents Conducta antisocial y consumo de alcohol en adolescentes escolares Conduta anti-social e consumo de álcool em adolescentes escolares

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Karla Selene López García

2008-04-01

Full Text Available Adolescence is a vulnerable period and facilitates the start of risk behaviors, for instance the use of drugs. This study aims to describe the differences between antisocial behavior and alcohol consumption according to gender, age and education; as well as to discover the relation between antisocial behavior and alcohol consumption in 1,221 school adolescents from Monterrey - Nuevo Leon, Mexico. The findings reveal differences in antisocial behavior according to gender. Evidences showed that 41.3% of the students had consumed alcohol at sometime in their lives, and that differences exist in alcohol consumption according to age and education. Finally, the study found positive and significant relations between antisocial behavior and alcohol consumption (r s = .272, p La adolescencia se convierte en una etapa de vulnerabilidad y facilitador para el inicio de conductas de riesgo como es el consumo de drogas. Los objetivos del presente estudio fueron: describir las diferencias de la conducta antisocial y consumo de alcohol según sexo, edad y escolaridad; conocer la relación existente de la conducta antisocial con el consumo de alcohol en 1221 adolescentes escolares de Monterrey, Nuevo Léon, México, en relación a los hallazgos encontrados se presentan diferencias de la conducta antisocial por sexo; se destaca que 41.3% de los estudiantes consumieron alcohol alguna vez en su vida, y existen diferencias de consumo de alcohol por edad y escolaridad. Finalmente se encontró relación positiva y significativa de la conducta antisocial con el consumo de alcohol (r s=.272, pA adolescência se apresenta como uma etapa de vulnerabilidade e facilitadora para o início de condutas de risco como o consumo de drogas. Os objetivos do presente estudo foram: descrever as diferenças entre sexo, idade e escolaridade na conduta anti-social e o consumo de álcool e conhecer a relação existente entre a conduta anti-social e o consumo de álcool em 1221

A review of Kudoa-induced myoliquefaction of marine fish species in South Africa and other countries

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Sun S. Henning

2013-11-01

Full Text Available Myoliquefaction of fish musculature results in customer quality complaints and in huge economic losses, especially with regard to Pacific hake (Merluccius productus, farm-reared Atlantic salmon (Salmo salar, South African pilchards (Sardinops ocellatus and Cape snoek (Thyrsites atun. Myoliquefaction, or jelly flesh, is caused by proteolytic enzymes released by the marine myxosporean parasite,Kudoa thyrsites, after the death of the fish. Currently there are no fast methods of detection for this microscopic parasite, and because myoliquefaction is evident only after 38-56 h post-mortem, infected fish inevitably reach the processor and/or consumer. Several methods of detection have been investigated, but most of these methods are time-consuming and/or result in destruction of the fish, and are thus impractical for fishing vessels and fish processors. Limited research is available on possible means of destroying or inhibiting the post-mortem activity of the parasitic proteolytic enzyme. Means such as manipulating post-mortem pH and temperature control have been suggested; leaving opportunities for research into food technology applications such as cold-chain management and ionising radiation.

Methodology of Integration for Competitive Technical Intelligence with Blue Ocean Strategy: Application to an exotic fruit

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Marisela Rodríguez Salvador

2011-12-01

Full Text Available This article presents a new methodology that integrates Competitive Technical Intelligence with Blue Ocean Strategy. We explore new business niches taking advantage of the synergy that both areas offer, developing a model based on cyclic interactions through a process developed in two stages: Understanding opportunity that arise from idea formulation to decision making and strategic development. The validity of our approach (first stage was observed in the evaluation of an exotic fruit, Anacardium Occidentale, in the South of the State of Veracruz, Mexico with the support of the university ITESM, Campus Monterrey. We identified critical factors for success, opportunities and threats. Results confirm the attractiveness of this crop.

La mercadotecnia en las PYMES y su influencia en el crecimiento de utilidades.

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Maria Eloisa Trevino Ayala

2013-01-01

Full Text Available This research aims to identify the marketing factors that enable SMEs succeed relative to its earnings growth in order to enhance their business opportunities. The independent variables included in this study are Product Management, Customer Service and Price Management. Research in conducted in Monterrey and its metropolitan area of Nuevo Leon, Mexico. The methodology used is multiple linear regression. According to the results obtained with sample items, earnings growth is not a function of Product Management, Customer Service and Price Management, that is to say, the area of marketing activities used by the entrepreneur are not significant to achieve with ANOVA parametric test, positive growth in earnings.

Alternative for Understanding Poverty: Households and Social Capital in Mexico

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Luis Portales

2015-01-01

Full Text Available In recent decades, social capital has been a key element within academic discourses and social policy programs. However, the operationalization of the concept varies from one place to another, thus generating debates regarding its likely contributions —both theoretical and empirical—. The paper argues that a contextual definition of the term contributes to the construction of a more sophisticated idea regarding poverty alleviation, supporting other academic work, which questionstraditional approaches. The latter is shown through the results of ethnographic fieldwork in Monterrey, Nuevo León, México, which included in depth interviews to household members defined as representatives of different poverty levels by a previous survey.

Leadership for development in a globalised environment

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S. Vil-Nkomo

2002-08-01

Full Text Available The advancement of Africa and NEPAD depends entirely on the emergence of an African leadership for development. Issues of leadership and operational citizenship are examined and analysed. The article uses Othello to dramatize and analyse the challenges of African leadership. The scramble to save Africa from within and external is presented. The consequences of globalisation are examined. The article demonstrates that NEPAD is not a given for this continent, because certain conditions must be met which are succinctly outlined in the United Nations Millennium Declaration, the Monterrey consensus, and the United Nations Development Programme. The article raises questions of shifting goal posts.

Sex education and family planning services for young adults: alternative urban strategies in Mexico.

Science.gov (United States)

Townsend, J W; Diaz de May, E; Sepúlveda, Y; Santos de Garza, Y; Rosenhouse, S

1987-01-01

In Mexico, youth face difficulties in obtaining reliable information on sex education and family planning through existing community programs. Two alternative strategies to provide these services are being tested in poor urban areas of Monterrey. In one experimental area, Integrated Youth Centers were established, which provide sex education and family planning services as well as counseling, academic tutoring, and recreational activities. In another area, trained young adults and community counselors work through informal networks to provide sex education and family planning information. Both utilization and the cost of these services are examined in the context of plans for expanding coverage in Mexico-U.S. border areas.

Influence of Communicative Habits in Generating Participation and Political Cynicism among the Pre-Citizens

OpenAIRE

Saldierna Salas, Alma Rosa; Muñiz, Carlos

2015-01-01

El presente trabajo analiza la influencia de los hábitos comunicativos en la generación de participación y cinismo político en los preciudadanos. Definiéndolos como aquellos jóvenes que por primera vez ejercerán el derecho a votar. El análisis se realiza desde la perspectiva de la teoría del malestar mediático y el círculo virtuoso. Los datos se obtuvieron a través de una encuesta aplicada a 1030 estudiantes del último año de preparatoria de la zona metropolitana de Monterrey, en el estado me...

Functional and antioxidant properties of hydrolysates of sardine (S. pilchardus) and horse mackerel (T. mediterraneus) for the microencapsulation of fish oil by spray-drying.

Science.gov (United States)

Morales-Medina, R; Tamm, F; Guadix, A M; Guadix, E M; Drusch, S

2016-03-01

The functionality of fish protein hydrolysates (FPH) for the microencapsulation of fish oil was investigated. Muscle protein from sardine (Sardina pilchardus) and horse mackerel (Trachurus mediterraneus) was hydrolysed using Alcalase or trypsin. Physically stable emulsions suitable for spray-drying were obtained when using FPH with a degree of hydrolysis of 5%. Microencapsulation efficiency amounted to 98±0.1% and oxidative stability of the encapsulated oil over a period of twelve weeks was in a similar range as it is reported for other matrix systems. Therefore, the suitability of FPH for use in spray-dried emulsions has been shown for the first time. Since no clear correlation between the antioxidative activity of the FPH and the course of lipid oxidation could be established future research is required to more specifically characterise the molecular structure of the peptides and its impact on protein alteration and role in lipid oxidation. Copyright © 2015 Elsevier Ltd. All rights reserved.

Proteolysis of Sardine (Sardina pilchardus and Anchovy (Stolephorus commersonii by Commercial Enzymes in Saline Solutions

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Chau Minh Le

2015-01-01

Full Text Available Fish sauce production is a very long process and there is a great interest in shortening it. Among the different strategies to speed up this process, the addition of external proteases could be a solution. This study focuses on the eff ect of two commercial enzymes (Protamex and Protex 51FP on the proteolysis of two fish species traditionally converted into fish sauce: sardine and anchovy, by comparison with classical autolysis. Hydrolysis reactions were conducted with fresh fish at a temperature of 30 °C and under different saline conditions (from 0 to 30 % NaCl. Hydrolysis degree and liquefaction of the raw material were used to follow the process. As expected, the proteolysis decreased with increasing amount of salt. Regarding the fi sh species, higher rate of liquefaction and higher hydrolysis degree were obtained with anchovy. Between the two proteases, Protex 51FP gave better results with both fi sh types. This study demonstrates that the addition of commercial proteases could be helpful for the liquefaction of fi sh and cleavage of peptide bonds that occur during fi sh sauce production and thus speed up the production process.

Feeding of European pilchard (Sardina pilchardus in the northwestern Mediterranean: from late larvae to adults

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David Costalago

2014-03-01

Full Text Available We assessed the relative importance of different prey types of the European pilchard (European sardine from the late larval to the adult stage. Two different methodologies for analysing stomach contents were used to describe the trophic dynamics of sardine and the relationship of sardine feeding behaviour with the ontogenetic development of body structures used for feeding, such as gill rakers and pyloric caeca. This information is essential to accurately depict the use of the planktonic resources in the area by sardine and to discuss the extent to which the sardine population could be affected by environmental changes in the Mediterranean Sea. We showed that cladocerans in summer and diatoms in winter were numerically the most important prey types for both juveniles and adults. However, decapod larvae were the most important prey during all seasons in terms of carbon content. Accordingly, differences in methodology should be considered in the analysis of sardine diets. An analysis of the composition of the plankton showed that small copepods were strongly selected by sardines at all ages and in both seasons. We also observed that the pyloric caeca began to grow when the sardines were approximately 4-5 cm standard length (SL and ended their development when the sardines reached approximately 8 cm SL, whereas the gill rakers appeared to be completely functional when the sardines reached 7 cm SL. Therefore, filter feeding of small particles could be performed with total efficacy beginning at 7-8 cm SL. In view of the energetic advantage of filter feeding in a well-adapted filter-feeding species such as sardine, the prospective limited availability of small particles hypothesized by certain authors for the Mediterranean could have negative consequences for sardine. This study demonstrates that sardine populations, given their extremely high dependence on the lower marine trophic levels, could be strongly affected by alterations in the environment and in the planktonic community.

Opportunities for the operation of the Comision Federal de Electricidad`s fossil fuel power plant stations eventually to be retired as cogeneration units; Oportunidades de operar las centrales termoelectricas de la Comision Federal de Electricidad, eventualmente retirables como unidades de cogeneracion

Energy Technology Data Exchange (ETDEWEB)

Buendia Dominguez, E. H. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico); Merlos Rueda, R. M. [Programa de Ahorro de Energia para el Sector Electrico, Mexico, D. F. (Mexico)

1995-12-31

The Programa de Ahorro de Energia para el Sector Electrico (PAESE) (Program for Energy Conservation for the Electric Sector) in collaboration with the Instituto de Investigaciones Electricas (IIE), decided to evaluate technically and economically the possibilities of operating the Comision Federal de Electricidad`s Thermoelectric Power Stations (TPS), eventually to be retired as cogeneration units in supplying thermal energy to industry. The study was focussed to the Monterrey and San Jeronimo Power Stations, determining in a first stage, the optimum radius for handling and transporting steam and/or hot water and so to define the industries that potentially could obtain heat energy from the TPS, in this stage the thermal needs of the evaluated industries were determined (pressure, temperature and flow). In a second stage, the different arrangements to be made to operate the selected TPS, so as to be in position of satisfying such thermal energy demands were evaluated. This paper presents the results of this study. [Espanol] El Programa de Ahorro de Energia para el Sector Electrico (PAESE), en colaboracion con el Instituto de Investigaciones Electricas, decidieron evaluar tecnica y economicamente las posibilidades de operar las centrales termoelectricas (CT`s) de la Comision Federal de Electricidad, eventualmente retirables, como unidades de cogeneracion al ofrecer calor a la industria. El estudio se enfoco en las centrales de Monterrey y San Jeronimo, determinado en una primera etapa el radio optimo para el manejo y transporte de vapor y/o agua caliente y asi definir a las industrias que potencialmente podrian recibir calor de las CT`s, en esta etapa se determinaron las necesidades termicas de las industrias evaluadas (presion, temperatura y flujo). En una segunda etapa se evaluo los diferentes arreglos para operar las CT`s seleccionadas para que pudieran satisfacer dichas demandas termicas. En este trabajo se presentaron los resultados de dicho estudio.

Opportunities for the operation of the Comision Federal de Electricidad`s fossil fuel power plant stations eventually to be retired as cogeneration units; Oportunidades de operar las centrales termoelectricas de la Comision Federal de Electricidad, eventualmente retirables como unidades de cogeneracion

Energy Technology Data Exchange (ETDEWEB)

Buendia Dominguez, E H [Instituto de Investigaciones Electricas, Cuernavaca (Mexico); Merlos Rueda, R M [Programa de Ahorro de Energia para el Sector Electrico, Mexico, D. F. (Mexico)

1996-12-31

The Programa de Ahorro de Energia para el Sector Electrico (PAESE) (Program for Energy Conservation for the Electric Sector) in collaboration with the Instituto de Investigaciones Electricas (IIE), decided to evaluate technically and economically the possibilities of operating the Comision Federal de Electricidad`s Thermoelectric Power Stations (TPS), eventually to be retired as cogeneration units in supplying thermal energy to industry. The study was focussed to the Monterrey and San Jeronimo Power Stations, determining in a first stage, the optimum radius for handling and transporting steam and/or hot water and so to define the industries that potentially could obtain heat energy from the TPS, in this stage the thermal needs of the evaluated industries were determined (pressure, temperature and flow). In a second stage, the different arrangements to be made to operate the selected TPS, so as to be in position of satisfying such thermal energy demands were evaluated. This paper presents the results of this study. [Espanol] El Programa de Ahorro de Energia para el Sector Electrico (PAESE), en colaboracion con el Instituto de Investigaciones Electricas, decidieron evaluar tecnica y economicamente las posibilidades de operar las centrales termoelectricas (CT`s) de la Comision Federal de Electricidad, eventualmente retirables, como unidades de cogeneracion al ofrecer calor a la industria. El estudio se enfoco en las centrales de Monterrey y San Jeronimo, determinado en una primera etapa el radio optimo para el manejo y transporte de vapor y/o agua caliente y asi definir a las industrias que potencialmente podrian recibir calor de las CT`s, en esta etapa se determinaron las necesidades termicas de las industrias evaluadas (presion, temperatura y flujo). En una segunda etapa se evaluo los diferentes arreglos para operar las CT`s seleccionadas para que pudieran satisfacer dichas demandas termicas. En este trabajo se presentaron los resultados de dicho estudio.

Bismuth oxide aqueous colloidal nanoparticles inhibit Candida albicans growth and biofilm formation

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Hernandez-Delgadillo R

2013-04-01

Full Text Available Rene Hernandez-Delgadillo,1 Donaji Velasco-Arias,3 Juan Jose Martinez-Sanmiguel,2 David Diaz,3 Inti Zumeta-Dube,3 Katiushka Arevalo-Niño,1 Claudio Cabral-Romero2 1Facultad de Ciencias Biológicas, Instituto de Biotecnologia, Universidad Autonoma de Nuevo Leon, UANL, Monterrey, Mexico; 2Facultad de Odontología, Universidad Autonoma de Nuevo Leon, UANL, Monterrey, México; 3Facultad de Quimica, Universidad Nacional Autonoma de Mexico, UNAM, Distrito Federal, México Abstract: Multiresistance among microorganisms to common antimicrobials has become one of the most significant concerns in modern medicine. Nanomaterials are a new alternative to successfully treat the multiresistant microorganisms. Nanostructured materials are used in many fields, including biological sciences and medicine. Recently, it was demonstrated that the bactericidal activity of zero-valent bismuth colloidal nanoparticles inhibited the growth of Streptococcus mutans; however the antimycotic potential of bismuth nanostructured derivatives has not yet been studied. The main objective of this investigation was to analyze the fungicidal activity of bismuth oxide nanoparticles against Candida albicans, and their antibiofilm capabilities. Our results showed that aqueous colloidal bismuth oxide nanoparticles displayed antimicrobial activity against C. albicans growth (reducing colony size by 85% and a complete inhibition of biofilm formation. These results are better than those obtained with chlorhexidine, nystatin, and terbinafine, the most effective oral antiseptic and commercial antifungal agents. In this work, we also compared the antimycotic activities of bulk bismuth oxide and bismuth nitrate, the precursor metallic salt. These results suggest that bismuth oxide colloidal nanoparticles could be a very interesting candidate as a fungicidal agent to be incorporated into an oral antiseptic. Additionally, we determined the minimum inhibitory concentration for the synthesized

The effects of socioeconomic status, clinical factors, and genetic ancestry on pulmonary tuberculosis disease in northeastern Mexico.

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Bonnie N Young

Full Text Available Diverse socioeconomic and clinical factors influence susceptibility to tuberculosis (TB disease in Mexico. The role of genetic factors, particularly those that differ between the parental groups that admixed in Mexico, is unclear. The objectives of this study are to identify the socioeconomic and clinical predictors of the transition from latent TB infection (LTBI to pulmonary TB disease in an urban population in northeastern Mexico, and to examine whether genetic ancestry plays an independent role in this transition. We recruited 97 pulmonary TB disease patients and 97 LTBI individuals from a public hospital in Monterrey, Nuevo León. Socioeconomic and clinical variables were collected from interviews and medical records, and genetic ancestry was estimated for a subset of 142 study participants from 291,917 single nucleotide polymorphisms (SNPs. We examined crude associations between the variables and TB disease status. Significant predictors from crude association tests were analyzed using multivariable logistic regression. We also compared genetic ancestry between LTBI individuals and TB disease patients at 1,314 SNPs in 273 genes from the TB biosystem in the NCBI BioSystems database. In crude association tests, 12 socioeconomic and clinical variables were associated with TB disease. Multivariable logistic regression analyses indicated that marital status, diabetes, and smoking were independently associated with TB status. Genetic ancestry was not associated with TB disease in either crude or multivariable analyses. Separate analyses showed that LTBI individuals recruited from hospital staff had significantly higher European genetic ancestry than LTBI individuals recruited from the clinics and waiting rooms. Genetic ancestry differed between individuals with LTBI and TB disease at SNPs located in two genes in the TB biosystem. These results indicate that Monterrey may be structured with respect to genetic ancestry, and that genetic

The effects of socioeconomic status, clinical factors, and genetic ancestry on pulmonary tuberculosis disease in northeastern Mexico.

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Young, Bonnie N; Rendón, Adrian; Rosas-Taraco, Adrian; Baker, Jack; Healy, Meghan; Gross, Jessica M; Long, Jeffrey; Burgos, Marcos; Hunley, Keith L

2014-01-01

Diverse socioeconomic and clinical factors influence susceptibility to tuberculosis (TB) disease in Mexico. The role of genetic factors, particularly those that differ between the parental groups that admixed in Mexico, is unclear. The objectives of this study are to identify the socioeconomic and clinical predictors of the transition from latent TB infection (LTBI) to pulmonary TB disease in an urban population in northeastern Mexico, and to examine whether genetic ancestry plays an independent role in this transition. We recruited 97 pulmonary TB disease patients and 97 LTBI individuals from a public hospital in Monterrey, Nuevo León. Socioeconomic and clinical variables were collected from interviews and medical records, and genetic ancestry was estimated for a subset of 142 study participants from 291,917 single nucleotide polymorphisms (SNPs). We examined crude associations between the variables and TB disease status. Significant predictors from crude association tests were analyzed using multivariable logistic regression. We also compared genetic ancestry between LTBI individuals and TB disease patients at 1,314 SNPs in 273 genes from the TB biosystem in the NCBI BioSystems database. In crude association tests, 12 socioeconomic and clinical variables were associated with TB disease. Multivariable logistic regression analyses indicated that marital status, diabetes, and smoking were independently associated with TB status. Genetic ancestry was not associated with TB disease in either crude or multivariable analyses. Separate analyses showed that LTBI individuals recruited from hospital staff had significantly higher European genetic ancestry than LTBI individuals recruited from the clinics and waiting rooms. Genetic ancestry differed between individuals with LTBI and TB disease at SNPs located in two genes in the TB biosystem. These results indicate that Monterrey may be structured with respect to genetic ancestry, and that genetic differences in TB

Glycerolysis of sardine oil catalyzed by a water dependent lipase in different tert-alcohols as reaction medium

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Solaesa, Á. G.

2015-12-01

Full Text Available The production of monoacylglycerol rich in polyunsaturated fatty acids (PUFA via enzymatic glycerolysis of sardine oil in a homogeneous system was evaluated. Reactions were conducted in two different tert-alcohols. Based on the phase equilibrium data, the amount of solvent added to create a homogeneous system has been calculated and optimized. The immobilized lipase used in this work was Lipozyme RM IM from Rhizomucor miehei, a water dependent lipase. The amount of water added as well as other reaction parameters were studied to evaluate the optimum conditions for monoacylglycerol obtencion. An initial reactant mole ratio glycerol to sardine oil 3:1, 12 wt% of water based on glycerol content and 10 wt% of lipase loading (based on weight of reactants, achieved a MAG yield of around 70%, with nearly 28 wt% PUFA, with low free fatty acid content (lower than 18 wt%.En este trabajo se ha estudiado la producción de monoacilglicéridos, ricos en ácidos grasos poliinsaturados (AGPI, mediante glicerolisis enzimática de aceite de sardina. La reacción se ha llevado a cabo en dos tert-alcoholes para conseguir de esta forma un medio homogéneo de reacción. La cantidad de disolvente añadida al medio de reacción se ha optimizado y calculado en base al equilibrio de fases de los componentes del sistema. La lipasa empleada como biocatalizador ha sido la enzima inmovilizada Lipozyme RM IM de Rhizomucor miehei, una lipasa dependiente de agua. Se ha estudiado el efecto de distintos parámetros cinéticos, así como de la cantidad de agua añadida al medio de reacción, en la producción de monoacilglicéridos. De los resultados obtenidos, se puede concluir que, para una relación molar inicial de reactantes glicerol:aceite de sardina de 3:1, un 12 % en peso de agua en base al glicerol y un 10 % en peso de lipasa, en base al peso de reactantes; se puede llegar a conseguir un rendimiento en monoacilglicéridos alrededor del 70 % en peso, con casi un 28 % en

An Empty Donut Hole: the Great Collapse of a North American Fishery

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Kevin M. Bailey

2011-06-01

Full Text Available Walleye pollock (Theragra chalcogramma is North America's most abundant and lucrative natural fishery, and is the world's largest fishery for human food. The little-known demise of the "Donut Hole" stock of pollock in the Aleutian Basin of the central Bering Sea during the 1980s is the most spectacular fishery collapse in North American history, dwarfing the famous crashes of the northern cod and Pacific sardine (Sardinops sagax. This collapse has received scant recognition and became evident only in 1993 when fishing was banned by an international moratorium; nearly 20 years later it has not recovered. The history of fishing in the North Pacific Ocean after World War II offers some insights into how the Donut Hole pollock fishery developed, and the societal and economic pressures behind it that so influenced the stock's fate. Overfishing was, without a doubt, the greatest contributor to the collapse of the Aleutian Basin pollock fishery, but a lack of knowledge about population biocomplexity added to the confusion of how to best manage the harvest. Unfortunately, the big scientific questions regarding the relationship of Donut Hole fish to other stocks are still unanswered.

Consumo de drogas y violencia laboral en mujeres que trabajan, un estudio multicéntrico: México, Perú, Brasil Consumo de drogas e violencia laboral em mulheres que trabalham, um estudo multicêntrico: México, Peru, Brasil Drug consumption and occupational violence in working women, a multicenter study: Mexico, Peru, Brazil

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Maria Magdalena Alonso Castillo

2006-04-01

Full Text Available Los propósitos del estudio fueron: 1 Determinar la proporción de consumo de drogas de las mujeres que trabajan; 2 Identificar algunos factores de riesgo personales y laborales que puedan predecir el consumo de drogas; 3 Identificar la presencia de violencia laboral y su relación con el consumo de drogas; 4 Identificar diferencias y similitudes de consumo de drogas y violencia laboral en las mujeres de las tres comunidades de México (Monterrey, Perú (Lima y Brasil (Rio de Janeiro. El estudio fue multicéntrico, descriptivo, correlacional y comparativo, con una muestra de 903 mujeres. En los resultados se observa que la proporción de consumo de alcohol en México fue del 11%, en Perú del 53% y en Brasil del 45%. El consumo de drogas ilícitas en México fue del 5% y en Perú del 6%. La presencia de violencia laboral fue del 16% en las mexicanas, 24% en las peruanas y 39% en las brasileñas.Os propósitos do estudo foram: 1 Determinar a proporção de consumo de drogas entre mulheres que trabalham; 2 Identificar alguns fatores de risco pessoais e laborais que possam predizer o consumo de drogas; 3 Identificar a presença de violência laboral e sua relação com o consumo de drogas; 4 Identificar diferenças e semelhanças no consumo de drogas e violência laboral nas mulheres das três comunidades de México (Monterrey, Perú (Lima e Brasil (Rio de Janeiro. O estudo foi multicêntrico, descritivo, correlacional e comparativo, com uma amostra de 903 mulheres. Nos resultados, observa-se que a proporção de consumo de álcool no México foi de 11%, no Peru de 53% e no Brasil de 45%. O consumo de drogas ilícitas no México foi de 5% e no Peru de 6%. A presença de violência laboral correspondeu a 16% das mexicanas, 24% das peruanas e 39% das brasileiras.The purposes of the study were: 1 Determine the proportion of working women who consume drugs; 2 identify some occupational and personal risk factors that can predict drugs consumption; 3

Representaciones sociales de la computadora en usuarios semirrurales de México (Social Representations of Semirural Computer Users of Mexico (Les représentations sociales de l′ordinateur chez les usagers semi-ruraux au Méxique (Representações sociais do computador em usuários semirrurais do México

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Marco Antoniog González-Pérez

2012-12-01

Full Text Available ResumenEste artículo de investigación se deriva de un estudio de campo realizado para identificar representaciones sociales (RS de la computadora en usuarios de los Centros Comunitarios de Aprendizaje del Instituto Tecnológico y de Estudios Superiores de Monterrey, ITESM. Se aplicaron dos instrumentos: prueba de aso- ciación libre y guion de entrevista a muestras de 217 sujetos, en la primera condición y 31, en la segunda. El estudio se realizó en Chapa de Mota y Villas del Car- bón, Estado de México. Se mostraron representacio- nes sociales, RS, cambiantes entre usuarios con base en edad y tiempo de uso y se observó cómo los miem- bros de la comunidad insertan la computadora en sus actividades cotidianas.AbstractThis research article is derived from a field study conducted to identify social representations (SR of the computer users of Community Learning Centers at ITESM. The instruments used were: free association test and interview script to samples of 217 subjects in the first condition and 31 in the sec- ond one. The study was conducted in Chapa de Mota and Villas del Carbón, Estado de México. SR were chang- ing between users based on age and length of use and showed how com- munity members used the computer in their daily activities.RésuméCet article de recherche découle d'une étude dans le terrain réalisée pour identifier les représentations sociales (RS de l’ordinateur chez les usagers des Centres Communautaires d’ap- prentissage dans le Tecnológico de Monterrey (Technologique de Mon- terrey. On a appliqué deux outils: la preuve d’association libre à 217 per- sonnes et le scenario d’entretien à 31 personnes. Les résultats ont montrés des représentations sociales chan- geantes en fonction de l’âge et le temps d’usage et on a observé com- ment les membres de la communauté utilisent l’ordinateur dans leurs activi- tés au quotidien.ResumoEste artigo se deriva de uma pesqui- sa de campo realizada

Molecular identification and description of the female of Nothoaspis reddelli (Ixodida: Argasidae) from a cave in southeastern Mexico.

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Guzmán-Cornejo, Carmen; Paredes-León, Ricardo; Labruna, Marcelo B; Nava, Santiago; Venzal, José M

2012-10-01

Nothoaspis reddelli Keirans and Clifford, 1975 , was described from 3 males collected in Grutas de Xtacumbilxunaán, Campeche, Mexico, although females have remained undescribed for 37 yr. Recently adult females of this species were collected from Cueva de Villa Luz ( =  Cueva de las Sardinas, Cueva del Azufre), in Tapijulapa, Tabasco, Mexico. Here we present a morphological description of the female stage, together with 16S rDNA sequences that confirm the conspecificity of our female, male, and nymphal specimens. The female integument of the anterior portion of the dorsal surface is smooth (nothoaspis), appearing to consist of 3 large "subunits," 1 anterior and 2 posterior, each with a small sublateral "subunit" on either side. The remaining dorsal covered integument is a cell-like configuration. The hood is large and bluntly rounded, and visible dorsally. The spiracular plate is oval. It possesses 1 pair of posthypostomal setae. The palpal trochanter has 1 pair of setae and a 5/5 hypostome decreasing to 4/4 at the apex. There is a single central pore at the base of the hypostome.

[Training and use of dental manpower resources in Mexico].

Science.gov (United States)

Hermosillo, G G; López Cámara, V; Alvarez Manilla, J M; García Cantú, M; Silva Olivares, H

1978-01-01

The introductory section describes the general situation of dental care in Mexico, analyzes the prevailing service model (including the kind of work done by the dental professional and the technology he employs), and briefly reviews the evolution of dentistry in the country. There follows an account of a series of new approaches to service and manpower training in experimental implementation since 1972 in the stomatology curriculum at the Xochimilco campus of the Metropolitan Autonomous University, at the National School of Professional Studies at Zaragoza, in the School of Dentistry of Nuevo León Autonomous University, Monterrey, and in the Dental Services at Ciudad Netzahualcóyotl. In each case, the background, characteristics, and objectives of the programs, and their evolution and prospects are described.

Community nursing research. Nuevo Leon, Mexico.

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Rappsilber, C; Castillo, A A; Gallegos, E C

1998-01-01

After a 10-year history of community health nursing research conducted by graduate students at the Universidad Autónoma de Nuevo León in Monterrey, Mexico, the faculty recognized a need to synthesize their work into a monograph. The purpose was to guide nursing practice, incorporate the findings into the body of nursing knowledge, and identify future research needs. Starting in 1994, three faculty members reviewed 29 theses written by community nursing majors from 1986 to 1993 to meet the requirements for the master's degree in nursing. They classified the studies according to their principal focus and synthesized the findings to derive common phenomena and themes. The endeavor resulted in a 40-page document and a proposed model in the form of an unpublished monograph.

[The panorama of coccidioidomycosis in Nuevo León from 1978 to 1988].

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González-Benavides, J

1991-01-01

The coccidioidomycosis is an endemic illness in the southern United States and the Northern of Mexico, the state of Texas and Nuevo Leon are included in this area. In the city of Monterrey from 1978 to 1988 the hospitals have reported one hundred and fifty cases. One hundred eleven of them from the state of Nuevo Leon and the remaining from the neighboring states. The main clinical presentation was in the pulmonary form with one hundred and twelve cases, followed by the cutaneous with thirty-three in the later the most common presentation was the ulcerated form. Therapeutically two new medication have been tried a with encouraging results, the itraconazole and the fluconazole the differential diagnosis is made mainly with tuberculosis and deep mycosis.

La Universidad Virtual del ITESM: hacia una transformación de la educación superior

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Marisa MARTÍN

2016-03-01

Full Text Available This article presents a virtual space for education developed at the Instituto Tecnológico y de Estudios Superiores de Monterrey (ITESM in Mexico. It describes problems and achievements, educational and technological decisions that have been made, the implications at an organizational level and of the actual protagonists of the process: teachers and students, trends and issues.The ITESM Virtual University is becoming a dynamic institution in a continual process of construction and evolution, an institution that has incorporated innovation and creativity into its working philosophy, that is permanently adapting the new technologies to educational processes, and is open to national and international educational needs while presenting different options for giving an educational response of quality in future years.

Assessing hydrometeorological impacts with terrestrial and aerial Lidar data in Monterrey, México

Science.gov (United States)

Yepez Rincon, F.; Lozano Garcia, D.; Vela Coiffier, P.; Rivera Rivera, L.

2013-10-01

Light Detection Ranging (Lidar) is an efficient tool to gather points reflected from a terrain and store them in a xyz coordinate system, allowing the generation of 3D data sets to manage geoinformation. Translation of these coordinates, from an arbitrary system into a geographical base, makes data feasible and useful to calculate volumes and define topographic characteristics at different scales. Lidar technological advancement in topographic mapping enables the generation of highly accurate and densely sampled elevation models, which are in high demand by many industries like construction, mining and forestry. This study merges terrestrial and aerial Lidar data to evaluate the effectiveness of these tools assessing volumetric changes after a hurricane event of riverbeds and scour bridges The resulted information could be an optimal approach to improve hydrological and hydraulic models, to aid authorities in proper to decision making in construction, urban planning, and homeland security.

Intervención para reducir riesgo en conductas sexuales de adolescentes: un ensayo aleatorizado y controlado Intervention to reduce adolescents’ sexual risk behaviors: a randomized controlled trial

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Esther C Gallegos

2008-02-01

Full Text Available OBJETIVO: Determinar la eficacia de una intervención conductual-educativa diseñada para disminuir las conductas sexuales de riesgo de VIH/SIDA y embarazos no planeados de adolescentes mexicanos. MATERIAL Y MÉTODOS: Ensayo controlado aleatorizado con cuatro seguimientos en un año; 832 adolescentes reclutados de escuelas preparatorias, entre 14 y 17 años, se asignaron aleatoriamente al grupo experimental o al control. La intervención, de seis hrs. de duración, aplicó estrategias de aprendizaje activo. El estudio se realizó en Monterrey, México, de 2002 a 2005. RESULTADOS: De acuerdo al análisis GEE, no hubo diferencia en las intenciones de tener relaciones sexuales, pero sí mayor nivel de intenciones de usar condón y anticonceptivos (diferencia de medias 0.15 y 0.16, IC 95% en el grupo experimental comparado con el control. Variables teoréticas como creencias sobre control fueron mediadoras de la intervención. CONCLUSIONES: La intervención conductual representa un importante esfuerzo en la promoción de conductas sexuales seguras en adolescentes mexicanos.OBJECTIVE: To test the efficacy of a behavioral intervention designed to decrease risk sexual behaviors for HIV/AIDS and unplanned pregnancies in Mexican adolescents. MATERIAL AND METHODS: Randomized controlled trial with four follow ups; 832 adolescents recruited from high schools, age 14-17, were randomly assigned to the experimental or control group. The six hour intervention used active learning strategies, and was delivered in two sessions on two consecutive Saturdays. The study was carried out in Monterrey, Mexico, 2002-2005. RESULTS: GEE analysis indicated no differences in sexual relationships’ intentions between the two conditions, however, the experimental group had higher intentions to use condoms and contraceptives (mean differences 0.15 and 0.16, CI 95% in the next three months, as compared with the control group. Theoretical variables, such as control beliefs, were

New insights into the early life ecology of Sardina pilchardus (Walbaum, 1792 in the northern Iberian Atlantic

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Sandra Ramos

2009-09-01

Full Text Available In the Atlantic Iberian estuaries, sardines tend to be a minor component of the ichthyoplankton assemblages, with rare occurrence largely restricted to estuarine mouths. However, this was not the case of the Lima estuary (NW Portugal, where sardines were the most abundant and frequently occurring marine taxon of the larval fish assemblages. Abundance of sardines collected during a two-year survey (2002-2004 ranged from 0.5 to 60.8 larvae/100 m3, with the majority still showing yolk and unpigmented eyes. Moreover, 80% of sardines were 8 days old or less and the total length ranged from 2 to 16 mm. Seasonal variations of sardine occurrence in the Lima estuary correlated with temporal variations of salinity and temperature in the water column. The unusually high river-flow observed during the winter of 2002-2003, which preceded the spring-summer abundance peak, seemed to act as a signal for the estuarine recruitment that was encountered. In addition, the estuarine occurrence of sardine larvae was also correlated with the intensity of summer upwelling, which was responsible for coastal depletion of sardine larvae resulting in estuarine low catches during the summer of 2002. The Lima estuary also revealed another peculiarity related to the lack of temporal synchrony between coastal spawning activity and occurrence of larvae within the estuary. The abundance peaks of newly-hatched larvae (autumn 2002 and spring-summer 2003 did not coincide with the winter-spring spawning pattern described earlier for the northern Iberian coast. Modifications of the spawning strategy of the northern Iberian sardine stock are discussed based on these new insights into the early life of S. pilchardus.

Closing The Gap between Two Countries: Feasibility of Dissemination Of An Evidence-Based Parenting Intervention in México.

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Parra-Cardona, José Rubén; Aguilar Parra, Elizabeth; Wieling, Elizabeth; Domenech Rodríguez, Melanie M; Fitzgerald, Hiram E

2015-10-01

In this manuscript, we describe the initial steps of an international program of prevention research in Monterrey, México. Specifically, we present a feasibility study focused on exploring the level of acceptability reported by a group of Mexican mothers who were exposed to a culturally adapted parenting intervention originally developed in the United States. The efficacious intervention adapted in this investigation is known as Parent Management Training, the Oregon Model (PMTO(®)). Following a description of our international partnership, we describe the implementation of the pilot study aimed at determining initial feasibility. Qualitative data provided by 40 Mexican mothers exposed to the culturally adapted parenting intervention illustrate the participants' high level of receptivity toward the intervention, as well as the beneficial impact on their parenting practices. © 2014 American Association for Marriage and Family Therapy.

Representaciones sociales de la computadora en usuarios semirrurales de México

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Marco Antonio González-Pérez

2012-01-01

Full Text Available Este artículo de investigación se deriva de un estudio de campo realizado para identificar representaciones sociales (RS de la computadora en usuarios de los Centros Comunitarios de Aprendizaje del Instituto Tecnológico y de Estudios Superiores de Monterrey, ITESM. Se aplicaron dos instrumentos: prueba de asociación libre y guion de entrevista a muestras de 217 sujetos, en la primera condición y 31, en la segunda. El estudio se realizó en Chapa de Mota y Villas del Carbón, Estado de México. Se mostraron representaciones sociales, RS, cambiantes entre usuarios con base en edad y tiempo de uso y se observó cómo los miembros de la comunidad insertan la computadora en sus actividades cotidianas.

Acknowledgment - Issue 64

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Executive Editor

2016-11-01

• Saúl Hiram Souto Fuentes (Universidad de Monterrey - UDEM, México Reviewers invited • Deborah Ribeiro Carvalho (Universidade Federal do Paraná - UFPR, Brasil • Fabiano Ferreira de Castro (Universidade Federal de São Carlos - UFSCAR, Brasil • Isa Maria Freire (Universidade Federal de Paraiba - UFPB, Brasil • Luciano Antonio Digiampietri (Universidade de São Paulo - USP, Brasil • Maria Inês Tomaél (Universidade Estadual de Londrina - UEL, Brasil • Murilo Bastos da Cunha (Universidade de Brasília - UnB, Brasil • Orlando Corzo Cauracurí (Universidad Nacional Mayor de San Marcos - UNMSM, Perú • Thais Batista Zaninelli (Universidade Estadual de Londrina - UEL, Brasil In the same way our acknowledge to University Library System (University of Pittsburgh - PITTS, USA by constant technical support and advice for our journal.

Avances en la enseñanza a distancia de la ingeniería

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José Guadalupe Escamilla

2013-12-01

Full Text Available El Tecnológico de Monterrey es pionero en educación a distancia en América Latina. Ofrece una amplia gama de programas en línea de pregrado, posgrado y educación continua que incluye el área de ingeniería. Esta institución, líder en innovación educativa, también aplica tecnología a los procesos de enseñanza-aprendizaje presencial y semipresencial. Algunos proyectos de innovación educativa online relacionados con la enseñanza de la ingeniería son: MOOCs –Massive Open Online Course, cursos híbridos, simuladores, laboratorios virtuales y remotos, y otros proyectos de gran alcance como universidades corporativas y educación continua ejecutiva.

Gender Differences in the Relations among Patriarchal Beliefs, Parenting and Teen Relationship Violence in Mexican Adolescents

Science.gov (United States)

Espinoza, Guadalupe; Hokoda, Audrey; Ulloa, Emilio C.; Ulibarri, Monica D.; Castaneda, Donna

2012-01-01

Teen relationship violence is a global phenomenon associated with adverse outcomes. As in other countries, teen relationship violence is of concern in Mexico. However, few studies have examined the risk and protective factors of teen relationship violence among Mexican adolescents. The current study examined whether patriarchal beliefs and exposure to authoritarian parenting among Mexican adolescents are associated with perpetration and victimization of physical and verbal-emotional teen relationship violence. Two hundred and four students (15 – 18 years old) from Monterrey, Mexico completed questionnaires. Hierarchical regression analyses controlling for age revealed that among girls, authoritarian parenting was associated with physical and verbal-emotional victimization and verbal-emotional violence perpetration. Among boys, higher endorsement of patriarchal beliefs was associated with lower reports of physical perpetration and physical victimization. PMID:23277734

Problems Faced by Beginning Teachers in Private Elementary Schools: A Comparative Study between Spain and Mexico

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Magda Yolanda Cantú Tijerina

2006-11-01

Full Text Available In order to explore the problems faced by beginning teachers in private elementary schools in the Spanish city of Madrid and in the Mexican city of Monterrey, questionnaires were applied to private school teachers just starting out in both cities. The results indicate that in both contexts, as beginners, teachers face problems of an academic, organizational, social, and material and technological nature. However, it stresses the fact that Mexican teachers perceive more problems in all the categories than do their Spanish colleagues. Similarity in the results was found in the category of social problems, which was the one mentioned least by the teachers in both cities. This suggests that the cultural nature of these two countries may be a factor to be considered in connection with fostering beginning teachers’ adaptation process.

Ejercicio de resistencia muscular en adultos con diabetes mellitus tipo 2 Exercício de resistência muscular em adultos com diabetes mellitus tipo 2 Endurance training in adults with diabetes mellitus type 2

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Karina Asunción Muñoz Canché

2005-02-01

Full Text Available Objetivos. Probar la efectividad del ejercicio de resistencia muscular en las cifras de hemoglobina glucosilada (HbA1c, en la fuerza muscular y en la fortaleza muscular percibida; explorar la influencia de la dieta, otros ejercicios, hipoglucemiantes y manifestaciones asociadas a episodios de hipoglucemia o hiperglucemia sobre el control glucémico de adultos con diabetes mellitus tipo 2 provenientes de los consultorios de endocrinología de dos hospitales públicos de la Ciudad de Monterrey, México. Procedimientos básicos. Se usó un diseño de 12 semanas de grupo control no equivalente con dos grupos, experimental (n1 = 14 y control (n2 = 11. Los participantes contaron con la recomendación de su médico para participar. Las sesiones de ejercicio fueron de una hora, dos veces por semana. Resultados. El grupo experimental mostró decremento significativo en el porcentaje de HbA1c, e incremento en la fuerza muscular y fortaleza muscular percibida (p Objetivos: Provar a efetividade do exercício de resistência muscular nas taxas de hemoglobina A glicosilada (HbA1c, na força muscular e no fortalecimento muscular percebido, explorar a influência da dieta, outros exercícios, hipoglicemiantes e manifestações associadas a episódios de hipoglicemia ou hiperglicemia sobre o controle glicêmico de adultos com diabetes mellitus tipo 2, provenientes dos consultórios de endocrinologia de dois hospitales públicos da Cidade de Monterrey, México. Procedimentos básicos: Foi utilizado um desenho de 12 semanas de grupo controle não equivalente com dois grupos, experimental (n1=14 e controle (n2=11. Os participantes tiveram recomendação de seu médico para participar. As sessões de exercício foram de uma hora, duas vezes por semana. Resultados: O grupo experimental apresentou decréscimo significativo nas taxas de HbA1c, incremento na força muscular e fortalecimento muscular percebido (pObjectives. Test the effects of an endurance training

Tendencias y retos recientes en tres metrópolis mexicanas: ciudad de México, Guadalajara y Monterrey Tendências e desafios recentes em três metrópoles mexicanas: Cidade do México, Guadalajara e Monterrey Recent trends and challenges in three large Mexican cities: Mexico City, Guadalajara and Monterrey

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Juan Manuel Ramírez Sáiz

2009-12-01

Full Text Available En este trabajo analizamos varios rasgos o facetas en tres ciudades metropolitanas mexicanas contemporáneas: la multiculturalidad, la inequidad, la fragmentación social y urbana, la inseguridad pública y los proyectos enfrentados de ciudad. El artículo constituye un balance sobre la situación prevaleciente elaborado a partir de proyectos de investigación de los autores y de la revisión de la literatura reciente sobre el tema. Es por tanto un trabajo de carácter fundamentalmente teórico.Neste trabalho analizamos vários rasgos ou facetas em três cidades metropolitanas mexicanas contemporâneas: a multiculturalidade, a desigualdade, a fragmentação social e urbana, a insegurança pública e os projetos de cidade enfrentados. O artigo faz um balanço sobre a situação prevalecente e foi elaborado a partir de projetos de pesquisa dos autores e da revisão da literatura recente sobre o tema. É, portanto, um trabalho de caráter fundamentalmente teórico.In this paper we analyze a series of factors or aspects in three large contemporary Mexican cities: multi-culturality, inequality, social and urban fragmentation, public insecurity and conflicting conceptions of what the city should be. The article offers an overview of the current situation, on the basis of the authors' own research projects and a review of recent literature on the topic. It is therefore primarily a theoretical paper.

Fish community structure in San Agustín Bay, Huatulco, Mexico Estructura comunitaria de peces en bahía San Agustín, Huatulco, México

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MARTÍN RAMÍREZ-GUTIÉRREZ

2007-12-01

Full Text Available San Agustín bay is one of the most important bays in the Huatulco National Park because it includes the broadest coral reef surface of this park, which supports a great diversity of fish species. The importance of the present work is that describes quantitatively, for first time, the fish assemblage of this reef area. Visual censuses were realized on transects, according to the coral reef size, on coral and rocky reefs, and coral rubble environments. 64 species, 46 genus and 29 families were registered. Seasonal variation in fish assemblage was observed; reflecting the influence of pelagic shoaling species associated with the Gulf of Tehuantepec upwelling, during the dry season. Thus species were Selar crumenophthalmus, Caranx caninus, and Sardinops caeruleus. For species more closely associated to the reef habitat little seasonal variation was observed for each species, except Chromis atrilobata, which exhibited high density during the dry season. Pomacentrids exhibited more affinity for coral reef, labrids and haemulids for coral rubble environments. The highest diversity values were on coral rubble and the highest density was on the coral reef. Our study suggests that in this region, the Gulf of Tehuantepec upwelling is an important factor as well as the heterogeneity of habitats in shaping the fish assemblages, which must be protected to maintain the biodiversity of this important ecosystemLa bahía de San Agustín es una de las más importantes del Parque Nacional Huatulco debido a que incluye al arrecife coralino más grande de este parque, el cual alberga una gran diversidad de especies de peces. La importancia del presente trabajo es describir cuantitativamente, por primera vez, la comunidad de peces de este habitat de arrecifes. Para ello se realizaron censos visuales en transectos de acuerdo al tamaño de los ambientes coralino, rocoso y de escombros. 64 especies, 46 géneros y 29 familias fueron registrados. Se observaron cambios

Vertical patterns of ichthyoplankton at the interface between a temperate estuary and adjacent coastal waters: Seasonal relation to diel and tidal cycles

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Primo, Ana Lígia; Azeiteiro, Ulisses M.; Marques, Sónia C.; Ré, Pedro; Pardal, Miguel A.

2012-07-01

Vertical distribution and migration pattern of ichthyoplankton assemblage in the Mondego estuary were investigated in relation to diel and tidal cycle. Summer and winter communities were sampled, at surface and bottom, over a diel cycle during spring and neap tides at a fixed station at the mouth of the estuary. Summer presented higher larvae density mainly of Pomatoschistus spp., Gobius niger and Parablennius pilicornis. Main species in winter assemblages were Pomatoschistus spp. and Sardina pilchardus. There were no differences between depth stratums across diel or tide cycle. Nevertheless, main species larval densities showed significant periodic variation associated with tide (M2) and diel (K1) cycles presenting generally, higher density at night and around low tide. Conversely, vertical patterns observed could not be related with diel or tidal cycle. Tough, main species presented some extent of vertical migration. Vertical patterns observed appear to be related to seasonal stratification and river flow, increasing amplitude during periods of less stratification and lower water currents. Present study provides a better understanding of ichthyoplankton vertical movement patterns and of small scale dynamics at the interface of two coastal European systems.

A real-time PCR assay to estimate invertebrate and fish predation on anchovy eggs in the Bay of Biscay

KAUST Repository

Albaina, A.

2015-02-01

In order to investigate the role of predation on eggs and larvae in the recruitment of anchovy (Engraulis encrasicolus), sardine (Sardina pilchardus), sprat (Sprattus sprattus) and 52 macrozooplankton taxa were assayed for anchovy remains in the gut during the 2010 spawning season using a molecular method. This real-time PCR based assay was capable of detecting 0.005. ng of anchovy DNA (roughly 1/100 of a single egg assay) in a reliable way and allowed detecting predation events up to 6. h after ingestion by small zooplankton taxa. A total of 1069 macrozooplankton individuals, 237 sardines and 213 sprats were tested. Both fish species and 32 macrozooplankton taxa showed remains of anchovy DNA within their stomach contents. The two main findings are (1) that the previously neglected macrozooplankton impact in anchovy eggs/larvae mortality is in the same order of magnitude of that due to planktivorous fishes and that, (2) the predation pressure was notably different in the two main spawning centers of Bay of Biscay anchovy. While relatively low mortality rates were recorded at the shelf-break spawning center, a higher predation pressure from both fish and macrozooplankton was exerted at the shelf one.

Recent trends and challenges in three large Mexican cities: Mexico City, Guadalajara and Monterrey

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Juan Manuel Ramírez Sáiz

2009-07-01

Full Text Available In this paper we analyze a series of factors or aspects in three large contemporary Mexican cities: multi-culturality, inequality, social and urban fragmentation, public insecurity and conflicting conceptions of what the city should be. The article offers an overview of the current situation, on the basis of the authors’ own research projects and a review of recent literature on the topic. It is therefore primarily a theoretical paper

Caracterización de los Sistemas de Áreas Naturales Protegidas en dos metrópolis Mexicanas

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Gabriela de la Mora-de la Mora

2016-08-01

Full Text Available From a polycentric analysis applied to mezzo regional level are characterized the urban and peri-urban’s protected natural areas systems (PNAS in the Mexican cities of Guadalajara and Monterrey. These systems have been defned by the proximity of the PNA’s to the urban areas, but not by a policy perspective or an existing public policy. The protected natural areas comprised in both systems are administered and managed by diferent levels of government (federal, state and municipal, which are facing major challenges in their management because of the local urbanization processes. Being one of the most important issues, the lack of coordination and communication between government authorities at diferent levels. The research is conducted based on the analysis of documentary information specialized in these subjects and empirical data gathered through interviews with key stakeholders in each metropolis.

Depression and quality of life for women in single-parent and nuclear families.

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Landero Hernández, René; Estrada Aranda, Benito; González Ramírez, Mónica Teresa

2009-05-01

This is a cross-sectional study which objectives are 1) to determine the predictors for perceived quality of life and 2) to analyze the differences between women from single-parent families and bi-parent families, about their quality of life, depression and familiar income. We worked with a non-probabilistic sample of 140 women from Monterrey, N.L, Mexico, 107 are from bi-parent families and 33 from single parent families. Some of the results show that women from single-parent families have lower quality of life (Z = -2.224, p = .026), lower income (Z = -2.727, p = .006) and greater depression (Z = -6.143, p = .001) than women from bi-parental families. The perceived quality of life's predictors, using a multiple regression model (n = 140) were depression, income and number of children, those variables explaining 25.4% of variance.

Draft Mauritius Strategy for the further Implementation of the Programme of Action for the Sustainable Development of Small Island Developing States

International Nuclear Information System (INIS)

2005-01-01

The Programme of Action for the Sustainable Development of Small Island Developing States remains the blueprint for small island developing States and the international community to address national and regional sustainable development in small island developing States that takes into account the economic, social and environmental aspects that are the pillars of the holistic and integrated approach to sustainable development. The Programme of Action sets out basic principles as well as specific actions that are required at the national, regional and international levels to support sustainable development in small island developing States. Along with the Barbados Programme of Action, the Rio Principles, the full implementation of Agenda 21, the Johannesburg Plan of Implementation and the outcomes of other relevant major United Nations conferences and summits, including the Monterrey Consensus, all contribute to the sustainable development of small island developing States

A WELL PRESERVED SKELETON OF THE FOSSIL SHARK COSMOPOLITODUS HASTALIS FROM THE LATE MIOCENE OF PERU, FEATURING FISH REMAINS AS FOSSILIZED STOMACH CONTENTS

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ALBERTO COLLARETA

2017-01-01

Full Text Available Both the preservation of the poorly mineralized skeleton of sharks and the preservation of stomach contents are rarely observed in the fossil record. Here we report on a partial skeleton of a lamniform shark, including portions of the visceral arches and the anterior segment of the vertebral column, collected from the late Miocene beds of the Pisco Formation exposed at Cerro Yesera (Ica Desert, South Peru. Based on the morphology of the preserved teeth, this specimen was determined as a juvenile of the extinct lamnid species Cosmopolitodus hastalis. The shark skeleton includes remains of fish (featuring a pilchard determined as Sardinops sp. cf. S. sagax in the abdominal region. These fish remains are interpreted herein as the fossilized stomach contents of the shark. For the first time, piscivory is demonstrated in a juvenile individual of Cosmopolitodus hastalis. This result is consistent with the current knowledge about the feeding habits of immature individuals of extant lamniform shark species (including Carcharodon carcharias and Isurus oxyrinchus. Our report further outlines the fundamental role of schooling pilchards in the late Miocene trophic chains of the highly productive coastal waters off present South Peru. Moreover, the find of this well preserved shark skeleton strengthens the qualification of the Pisco Formation as a Fossil-Lagerstätte, and emphasizes the role of early mineralization processes in cases of exceptional preservation.

Larval fish variability in response to oceanographic features in a nearshore nursery area.

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Pattrick, P; Strydom, N A

2014-09-01

The influence of oceanographic features on ichthyoplankton assemblages in the warm temperate nearshore region of Algoa Bay, South Africa, was assessed. The nearshore ichthyoplankton comprised 88 taxa from 34 families. Samples were collected at six stations between August 2010 and July 2012 using a plankton ring net of 750 mm diameter and 500 µm mesh aperture. The majority of larvae collected were in a preflexion stage, indicating the potential importance of the nearshore for newly hatched larvae. Engraulidae dominated the catch (38·4%), followed by Cynoglossidae (28·1%) and Sparidae (8·4%). Larval fish abundance was highest during austral spring and summer (September to February). Unique patterns in responses of each dominant fish species to oceanographic features in the nearshore indicate the sensitivity of the early developmental stage to environmental variables. Using generalized linear models, ichthyoplankton abundance responded positively to upwelling and when warm water plumes originating from an Agulhas Current meander entered Algoa Bay. Highest abundances of Engraulis encrasicolus and Sardinops sagax were observed during Agulhas Plume intrusions into Algoa Bay. When a mixed and stratified water column persisted in the nearshore region of Algoa Bay, larval fish abundance decreased. The nearshore region of Algoa Bay appears to serve as a favourable environment for the accumulation of ichthyoplankton. © 2014 The Fisheries Society of the British Isles.

Índice de Competitividad Municipal 2013: Metodología para su construcción basada en Análisis Factorial y su aplicación en municipios urbanos en México || Municipal Competitiveness Index 2013: Methodology of definition based on Factorial Analysis and application to Mexican urban municipalities

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Guillermo Peón, Sylvia Beatriz

2015-12-01

Full Text Available El documento presenta una descripción detallada de la metodología para construir el Índice de Competitividad Municipal 2013 para México. El índice es calculado utilizando una metodología basada en Análisis Factorial y compara el desempeño de 96 municipios pertenecientes a 24 zonas metropolitanas en diferentes estados de la República Mexicana. El índice incluye 61 variables agrupadas en cuatro dimensiones o subíndices: Económica, Institucional, Socio-demográfica y Urbano Ambiental. El Índice de Competitividad Municipal es el promedio de los cuatro índices. Los resultados muestran evidencia de que los municipios pertenecientes a la zona metropolitana de Monterrey son los que en general tienen más alta posición en el ranking de competitividad y resaltan la necesidad de una mayor cooperación y coordinación intermunicipal para mejorar la competitividad de aquellos municipios que pertenecen a una misma zona metropolitana. El estudio se enfoca particularmente en el análisis de los factores de cada dimensión de la competitividad para los municipios del Estado de Puebla incluidos en la muestra. || This paper presents a detailed explanation of the methodology to construct the Municipal Competitiveness Index 2013 for Mexico. The index is calculated using a methodology based on Factor Analysis and compares the performance of 96 municipalities belonging to 24 metropolitan areas in different States of the Mexican Republic. The index includes 61 variables grouped into four dimensions or sub-indexes: Economic, Institutional, Socio-demographic and Urban-environmental. The Municipal Competitiveness Index is the average of the four indexes. The results show evidence that municipalities of Monterrey metropolitan area are, in general, the ones with higher position in the competitiveness ranking, and highlight the need of inter-municipal cooperation and coordination in order to improve competitiveness of those municipalities belonging to a common

Actividad física y riesgo de cáncer de mama en mujeres mexicanas Physical activity and breast cancer risk in Mexican women

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Sandra Patricia Ortiz-Rodríguez

2008-04-01

Full Text Available OBJETIVO: Evaluar el efecto de la actividad física moderada (en horas por semana y METs-hora por semana sobre el riesgo de cáncer de mama (CM. MATERIAL Y MÉTODOS: Se trata de la primera fase de un estudio multicéntrico de casos y controles con base poblacional que se desarrolló en el Distrito Federal, Monterrey y Veracruz, México, en el año 2004. Se analizaron 58 casos y 58 controles pareados a los casos por quinquenio de edad, y pertenencia al sistema de salud; participaron tres hospitales del Instituto Mexicano del Seguro Social, tres del Instituto de Seguridad Social al Servicio de los Trabajadores del Estado y tres de la Secretaría de Salud. RESULTADOS: En mujeres posmenopáusicas se observó una reducción del riesgo de CM por cada hora semanal adicional de actividad física moderada (RM= 0.91; IC95% 0.85-0.97; en mujeres premenopáusicas, la disminución del riesgo no tuvo significancia estadística (RM= 0.99; IC95% 0.94-1.05 (p= 0.048, modificación de efecto. CONCLUSIONES: La actividad física reduce el riesgo de CM en mujeres mexicanas posmenopáusicas.OBJECTIVE: To evaluate the effect of moderate physical activity (hours per week and METs hours per week on the risk of breast cancer (BC in Mexican women. MATERIAL AND METHODS: This is the initial stage of a case control multicentric study based in the Federal District, Monterrey and Veracruz, Mexico, during 2004. Fifty eight cases paired to 58 control cases on quinquennium of age, and belonging to the health system were analyzed: three hospitals from the IMSS, three from ISSSTE and three from SS participated. RESULTS: In postmenopausal women, there was a reduction of the risk in BC by every additional hour per week of moderate physical activity (RM= 0.91; IC95% 0.85-0.97; in premenopausal women, the reduction of the risk was not statistically significant (RM= 0.99; IC95% 0.94-1.05 (p= 0.048, effect modification. CONCLUSIONS: Moderate physical activity reduces the risk of BC in

Quantum Fest 2015

International Nuclear Information System (INIS)

2016-01-01

The Quantum Fest is a periodic annual festival on Quantum Phenomena, Quantum Control and Geometry of Quantum States, organized by the Center for Research and Advanced Studies (Cinvestav by its acronym in Spanish) and Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del I.P.N. (UPIITA-IPN) in México City, Mexico. The aim of this meeting is to bring together students and researchers which are engaged in the subjects of the festival, from both theoretical and experimental approaches, in order to get lively discussions and to enable a closer contact between them. The festival was celebrated for the first time in the Physics Department of Cinvestav (2010), since then it has been alternatively hosted in Cinvestav and UPIITA. This is the sixth Quantum Fest and the first time that it is formally hosted in the Tecnológico de Monterrey (ITESM). The Quantum Fest 2015 took place from October 19 to 23 in Aulas VI of the Tecnológico de Monterrey, Campus Estado de México (CEM). We would like to thank the willing of the ITESM-CEM to offer its facilities as the venue of the festival; all its help provided to simplify the logistics and organization of the conference has been welcomed and is acknowledged. This volume is dedicated to the memory of our dear friend and colleague Sujeev Wickramasekara who passed away suddenly on December 28th 2015 at the age 48. Sujeev participated several times in the festival, he was an excellent speaker and, as a part of the audience, he used to pay special attention to the students’ presentations. His comments were always addressed to improve the students’ work, so that Sujeev was very popular among the young participants of the festival. We lost not only a great colleague and promissory scientist, but also a beautiful person who we shall always remember. Professor Manuel Gadella kindly agreed to write the tribute to Sujeev Wickramasekara. The obituary is included in these Proceedings as the opening article. The

Distribución de Aedes albopictus (Skuse en Nuevo León, México, 2001-2004 Distribution of Aedes albopictus (Skuse in Nuevo Leon, México, 2001-2004

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Héctor Orta-Pesina

2005-04-01

Full Text Available OBJETIVO: Determinar la distribución de Aedes albopictus (Skuse en Nuevo León, México. MATERIAL Y MÉTODOS: Entre 2001 y 2004, utilizando métodos estandarizados de recolección de larvas de mosquitos, se analizaron 6 371 muestras, de 167 localidades. Se estimaron proporciones de muestras positivas de Ae. albopictus, por municipio, por año, utilizando Excel. RESULTADOS: Hubo 1 179 muestras positivas para larvas de Ae. albopictus distribuidas en 10 municipios: cinco localizados en la llanura costera del Golfo de México, con clima semicálido, subhúmedo y con lluvias casi todo el año (Allende, Montemorelos, Linares, General Terán y Santiago; otros, Sabinas Hidalgo y Cadereyta, se localizan en las grandes llanuras del norte de América, con clima cálido, semiseco y con lluvias poco frecuentes y, finalmente, Apodaca, San Nicolás y Escobedo en el área metropolitana de la ciudad de Monterrey. CONCLUSIONES: Hasta noviembre de 2004, el segundo vector de mayor importancia epidemiológica en el ciclo de la transmisión de Ae. albopictus a escala mundial se encontró en 10 municipios del estado de Nuevo León.OBJECTIVE: To determine the distribution of Aedes albopictus (Skuse in Nuevo Leon between 2001 and 2004. MATERIAL AND METHODS: Standardized methods were used to collect 6371 samples of mosquito's larvae from 167 sites. The proportions of samples positive for Ae. albopictus were obtained by municipality and year, using the software program Excel. RESULTS: There were 1 179 samples positive for Ae. albopictus. This species was distributed over 10 municipalities, as follows: Five on the Gulf of Mexico Coastal Plains, which predominantly have a semi-warm, sub-humid climate, and precipitations almost year round (Allende, Montemorelos, Linares, General Teran, and Santiago; two (Sabinas Hidalgo, and Cadereyta localized on the North American Great Plains, which have a warm, semiarid climate, and scarce precipitations. The final three were Apodaca

Conocimientos, actitudes y prácticas sobre la influenza A(H1N1 2009 y la vacunación contra influenza pandémica: resultados de una encuesta poblacional Knowledge, attitudes and practices about influenza A(H1N1 2009, and influenza vaccine in Mexico: results of a population survey

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María Eugenia Jiménez-Corona

2012-12-01

Full Text Available OBJETIVO: Evaluar conocimientos, actitudes y prácticas respecto a la pandemia de influenza, con especial énfasis en la vacuna contra influenza estacional y pandémica. MATERIAL Y MÉTODOS: Estudio transversal con muestreo polietápico probabilístico, realizado durante diciembre de 2009 en residentes mayores de 18 años de la Ciudad de México (y área metropolitana, Monterrey, Guadalajara y Mérida. RESULTADOS: Se incluyeron 1 600 sujetos (48.9% masculino; 34% había recibido vacuna contra influenza estacional en años pasados, 90.6% estaba dispuesto a recibir la vacuna contra A(H1N1. La principal causa de rechazo a la vacunación fue no confiar en la vacuna (46.5%. Principales medidas preventivas identificadas por los encuestados: lavado de manos (47.5%, vacuna contra A(H1N1 (28% y etiqueta respiratoria (19.4%. El nivel escolar (1.7, p=0.006 y edad (1.02, pOBJECTIVE: To assess knowledge, attitudes and practices regarding influenza pandemic, with special emphasis on issues related to influenza vaccine, seasonal and pandemic. MATERIALS AND METHODS: Cross-sectional study, probabilistic multistage sampling in patients over 18 years, residents of Mexico City (and metropolitan area, Monterrey, Guadalajara and Merida in December 2009. RESULTS: A total of 1.600 subjects (48.9% male were interviewed, 34% had previously received seasonal flu vaccine, 90.6% were willing to be vaccinated against A(H1N1, 46.5% of those who would not receive the vaccine was because they did not trust A (H1N1, 68% considered influenza A (H1N1 as a risk for their family. Hand washing was the preventive measure most commonly reported (47.5%, secondly influenza vaccine (28%. Schooling (1.7, p=0.006 and age (1.02, p<0.001 influence rejection to get vaccine. 82.9% of respondents rate the federal government's management as good or very good. CONCLUSIONS: There was a high acceptance rate for the pandemic influenza vaccine in Mexico when compared to similar studies in other

Investigator profile. An interview with Salvador Contreras Balderas, Ph.D. Interview by Vicki Glaser.

Science.gov (United States)

Contreras Balderas, Salvador

2006-01-01

Dr. Contreras Balderas is Professor Emeritus in the Department of Biology at Universidad Autonoma de Nuevo Leon (Monterrey, Mexico). He received a Master's degree and Ph.D. in Biological Sciences from Tulane University (New Orleans, LA) and wrote his dissertation on Ichthyology. He was awarded the President's Excellence Award of the American Fisheries Society. Dr. Contreras Balderas is Founder, President, and Honorary Member of the Mexican Society of Zoology, the Ichthyological Society of Mexico, and the Desert Fishes Council, is an ex-officio member of the Coalition for the Sustainable Development of the Rio Grande/Rio Bravo, U.S. & Mexico, and is a member of the U.S. Fish and Wildlife's Rio Grande Fishes Recovery Team. Dr. Contreras Balderas's areas of expertise include fish faunas, fishes at risk, exotic species, aquatic restoration, environmental impacts as detected by fishes, integral conservation, integral basin/ecosystem management, and ecological evaluation of integrity in basins.

A Model for Systemic Change Management in Education

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Marylu Menchaca

2004-02-01

Full Text Available Based on an understanding of systems thinking as practiced by successful learning organizations and derived from large-scale projects in technology-assisted teaching and learning in Mexico and Germany, we have developed a model that offers guidance to educational institutions and organizations to support their transition from lecture-based, face-to-face teaching to interactive learner-centered eLearning. As the basis for the model, we analyzed the systemic change processes of two major educational institutions: the largest private institution of higher education in Latin America, Instituto Tecnologico de Estudios Superiores de Monterrey (ITESM, a leading nationwide educational system of international scope with 33 branches in 27 cities throughout Mexico, and the federal flagship project in Germany, Virtuelle Fachhochschule (VFH, the Virtual University of Applied Sciences, a virtual organization with decentralized and distributed management and participants from twelve universities of applied sciences, two universities, the federal employers

Determination of arsenic species in seafood samples from the Aegean Sea by liquid chromatography-(photo-oxidation)-hydride generation-atomic fluorescence spectrometry

Energy Technology Data Exchange (ETDEWEB)

Schaeffer, Richard [Department of Applied Chemistry, Corvinus University, Villanyi ut 29-35, 1118 Budapest (Hungary); Soeroes, Csilla [Department of Applied Chemistry, Corvinus University, Villanyi ut 29-35, 1118 Budapest (Hungary); Ipolyi, Ildiko [Department of Applied Chemistry, Corvinus University, Villanyi ut 29-35, 1118 Budapest (Hungary); Fodor, Peter [Department of Applied Chemistry, Corvinus University, Villanyi ut 29-35, 1118 Budapest (Hungary); Thomaidis, Nikolaos S. [Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Panepistiomopolis Zografou, 15776 Athens (Greece)]. E-mail: ntho@chem.uoa.gr

2005-08-15

In this study arsenic compounds were determined in mussels (Mytulis galloprovincialis), anchovies (Engraulis encrasicholus), sea-breams (Sparus aurata), sea bass (Dicentrarchus labrax) and sardines (Sardina pilchardus) collected from Aegean Sea using liquid chromatography-photo-oxidation-hydride generation-atomic fluorescence spectrometry [LC-(PO)-HG-AFS] system. Twelve arsenicals were separated and determined on the basis of their difference in two properties: (i) the pK {sub a} values and (ii) hydride generation capacity. The separation was carried out both with an anion- and a cation-exchange column, with and without photo-oxidation. In all the samples arsenobetaine, AB was detected as the major compound (concentrations ranging between 2.7 and 23.1 {mu}g g{sup -1} dry weight), with trace amounts of arsenite, As(III), dimethylarsinic acid, DMA and arsenocholine, AC, also present. Arsenosugars were detected only in the mussel samples (in concentrations of 0.9-3.6 {mu}g g{sup -1} dry weight), along with the presence of an unknown compound, which, based on its retention time on the anion-exchange column Hamilton PRP-X100 and a recent communication [E. Schmeisser, R. Raml, K.A. Francesconi, D. Kuehnelt, A. Lindberg, Cs. Soeroes, W. Goessler, Chem. Commun. 16 (2004) 1824], is supposed to be a thio-arsenic analogue.

Feeding and ecomorphology of three clupeoids in the N Aegean Sea

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P. K. KARACHLE

2013-07-01

Full Text Available The present study examines the feeding habits of anchovy (Engraulis encrasicolus, sardine (Sardina pilchardus and round sardinella (Sardinella aurita. The results are combined with previously published information on feeding-related morphological features (i.e. mouth area, intestine length and tail area in order to explore morphological affinities between species and the effect of ecomorphology on their co-existence. These species were mainly zooplanktivorous and no dietary differences were found with sex and season. Anchovy preyed mainly on Crustacea larvae, whereas sardine and round sardinella on Copepoda. In the majority of cases (>90%, the individual fractional trophic level of all species ranged between 3.0 and 3.5, classifying them as omnivores with preference to animals. The feeding-related morphological features differed between anchovy and the two other species, whereas only intestine length differed between sardine and round sardinella. The fact that round sardinella’s diet and morphology show a greater resemblance to those of sardine, further support the hypothesis that is a particulate feeder as sardine. Hence the three species tend to exploit the same food resources differently throughout the year. Thus, they make best use of the environment and its resources, in order to avoid competition and achieve optimum feeding conditions throughout their life cycles

Born small, die young: Intrinsic, size-selective mortality in marine larval fish

KAUST Repository

Garrido, S.

2015-11-24

Mortality during the early stages is a major cause of the natural variations in the size and recruitment strength of marine fish populations. In this study, the relation between the size-at-hatch and early survival was assessed using laboratory experiments and on field-caught larvae of the European sardine (Sardina pilchardus). Larval size-at-hatch was not related to the egg size but was significantly, positively related to the diameter of the otolith-at-hatch. Otolith diameter-at-hatch was also significantly correlated with survival-at-age in fed and unfed larvae in the laboratory. For sardine larvae collected in the Bay of Biscay during the spring of 2008, otolith radius-at-hatch was also significantly related to viability. Larval mortality has frequently been related to adverse environmental conditions and intrinsic factors affecting feeding ability and vulnerability to predators. Our study offers evidence indicating that a significant portion of fish mortality occurs during the endogenous (yolk) and mixed (yolk /prey) feeding period in the absence of predators, revealing that marine fish with high fecundity, such as small pelagics, can spawn a relatively large amount of eggs resulting in small larvae with no chances to survive. Our findings help to better understand the mass mortalities occurring at early stages of marine fish.

A real-time PCR approach to detect predation on anchovy and sardine early life stages

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Cuende, Elsa; Mendibil, Iñaki; Bachiller, Eneko; Álvarez, Paula; Cotano, Unai; Rodriguez-Ezpeleta, Naiara

2017-12-01

Recruitment of sardine (Sardina pilchardus Walbaum, 1792) and anchovy (Engraulis encrasicolus Linnaeus, 1758) is thought to be regulated by predation of their eggs and larvae. Predators of sardine and anchovy can be identified by visual taxonomic identification of stomach contents, but this method is time consuming, tedious and may underestimate predation, especially in small predators such as fish larvae. Alternatively, genetic tools may offer a more cost-effective and accurate alternative. Here, we have developed a multiplex real-time polymerase chain reaction (RT-PCR) assay based on TaqMan probes to simultaneously detect sardine and anchovy remains in gut contents of potential predators. The assay combines previously described and newly generated species-specific primers and probes for anchovy and sardine detection respectively, and allows the detection of 0,001 ng of target DNA (which corresponds to about one hundredth of the total DNA present in a single egg). We applied the method to candidate anchovy and sardine egg predators in the Bay of Biscay, Atlantic Mackerel (Scomber scombrus) larvae. Egg predation observed was limited primarily to those stations where sardine and/or anchovy eggs were present. Our developed assay offers a suitable tool to understand the effects of predation on the survival of anchovy and sardine early life stages.

[Dynamics of numbers of commercial fish in early ontogenesis in different areas of the Central-Eastern Atlantic].

Science.gov (United States)

Arkhipov, A G; Mamedov, A A; Simonova, T A; Tenitskaia, I A

2011-01-01

Changes in the quantitative composition of mass fish species at early stages of ontogenesis in different areas of the Central-Eastern Atlantic (CEA) in warm and cold seasons in 1994-2008 were analyzed in the paper. The most widespread representatives of ichthyocenosis of CEA were: European pilchard (Sardina pilchardus), common scad (Trachurus trachurus), round sardinella (Sardinella aurita), and West-African scad (Trachrus trecae). The data obtained indicate that, within the economic zone of Morocco, fluctuations of numbers at early stages of development in European pilchard and common scad are close over the entire water area under consideration (36 degrees-21 degrees N). The regularities of fluctuations of the numbers of ichthyoplankton are similar to the interannual changes in the biomass of fish in the area of Morocco. In the area of Mauritania (21 degrees-16 degrees N), fluctuations of numbers of the early stages of development of commercial fish cannot be unambiguously correlated with changes in the biomass of adult fish. It is known that, in the economic zone of Mauritania, there are Senegal-Mauritanian populations of round sardinella and West-African scad that inhabit waters of different states and are not completely assessed by our surveys. Therefore, no obvious relation was observed between the considered data.

Temporal and cross-shelf distribution of ichthyoplankton in the central Cantabrian Sea

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Rodriguez, J. M.

2008-09-01

Environmental variables have been measured and sampling for ichthyoplankton has been conducted monthly, since April 2001, at three stations, located at the inner (1), middle (2) and outer (3) shelf of the central Cantabrian Sea. This paper presents the results of the study of the ichthyoplankton collected from July 2001 to June 2004. Fish larvae from 99 species, belonging to 37 families, were identified. Families with higher number of species were Gadidae, Sparidae and Labridae. The larval fish assemblage was dominated by pelagic fish species, with Sardina pilchardus, as the most abundant. There was a pronounced spring peak in larval abundance, dominated by S. pilchardus. A smaller peak, dominated by S. pilchardus and Micromesistius poutassou, was recorded in late winter at Stns 2 and 3. This pattern was evident for the three-year study. Results also indicate that this study was limited to the coastal larval fish assemblage inhabiting the central Cantabrian Sea shelf. This assemblage was temporally structured into other three assemblages: winter, late winter-spring and summer-autumn. Temperature was apparently a key factor in larval fish assemblage succession. In a scenario of global warming, this study constitutes a basis to evaluating the ongoing changes in the pelagic coastal ecosystem of the central Cantabrian Sea.

The ichthyoplankton assemblage and the environmental variables off the NW and N Iberian Peninsula coasts, in early spring

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Rodriguez, J. M.; Gonzalez-Nuevo, G.; Gonzalez-Pola, C.; Cabal, J.

2009-05-01

Ichthyoplankton and mesozooplankton were sampled and fluorescence and physical environmental variables were measured off the NW and N Iberian Peninsula coasts, during April 2005. A total of 51 species of fish larvae, belonging to 26 families, were recorded. Sardina pilchardus, with 43.8% and 58.7% of the total fish egg and larval catches, respectively, dominated the ichthyoplankton assemblage. The study area was divided by a cross-shelf frontal structure into two hydrographic regions that coincided with the Atlantic and Cantabrian geographic regions. Ichthyoplankton abundance was higher in the Cantabrian region while larval diversity was higher in the Atlantic region. This was the main alongshore variability in the structure of the larval fish assemblage. Nevertheless, the stronger variability, related with the presence of a shelf-slope front, was found in the central-eastern Cantabrian region where two major larval fish assemblages, an "outer" and a "coastal", were distinguished. The Atlantic region, where the shelf-slope front was not found, was inhabited by a single larval fish assemblage. Canonical correspondence analysis revealed that, off the NW and N Iberian Peninsula coasts, the horizontal distribution of larval fish species in early spring may be explained by a limited number of environmental variables. Of these, the most important were the physical variables depth and sea surface temperature.

210Po and 210Pb trophic transfer within the phytoplankton-zooplankton-anchovy/sardine food web: a case study from the Gulf of Lion (NW Mediterranean Sea).

Science.gov (United States)

Strady, Emilie; Harmelin-Vivien, Mireille; Chiffoleau, Jean François; Veron, Alain; Tronczynski, Jacek; Radakovitch, Olivier

2015-05-01

The transfer of (210)Po and (210)Pb in the food web of small pelagic fishes (from phytoplankton and zooplankton to anchovy Engraulis encrasicolus and sardine Sardina pilchardus) is investigated in the Gulf of Lion (GoL). We present original data of (210)Po and (210)Pb activity concentrations, C and N stable isotope ratios, measured (i) from different size classes of phytoplankton and zooplankton during spring and winter in different environments of the GoL, and (ii) in two fish species. Significant spatial patterns based on (210)Po, (210)Pb activity concentrations and (210)Po/(210)Pb ratios in the different plankton size classes are evidenced by hierarchical clustering, both in spring and winter. This variability, also observed for C and N stable isotopes ratios, is connected to local specific pelagic habitats and hydrodynamics. The sampling strategy suggests that (210)Po bioaccumulation in the GoL remains at a constant level from the first (dominated by phytoplankton) to the second trophic level (zooplankton), while (210)Pb bioaccumulation shows an increase in winter. Based on stable N isotope ratios and (210)Po activity concentrations measured in anchovies and sardines, we evidence (210)Po bio-magnification along the trophic food web of these two planktivorous pelagic fishes. Copyright © 2015 Elsevier Ltd. All rights reserved.

Born small, die young: Intrinsic, size-selective mortality in marine larval fish

KAUST Repository

Garrido, S.; Ben-Hamadou, R.; Santos, A.M.P.; Ferreira, S.; Teodó sio, M.A.; Cotano, U.; Irigoien, Xabier; Peck, M.A.; Saiz, E.; Ré , P.

2015-01-01

Mortality during the early stages is a major cause of the natural variations in the size and recruitment strength of marine fish populations. In this study, the relation between the size-at-hatch and early survival was assessed using laboratory experiments and on field-caught larvae of the European sardine (Sardina pilchardus). Larval size-at-hatch was not related to the egg size but was significantly, positively related to the diameter of the otolith-at-hatch. Otolith diameter-at-hatch was also significantly correlated with survival-at-age in fed and unfed larvae in the laboratory. For sardine larvae collected in the Bay of Biscay during the spring of 2008, otolith radius-at-hatch was also significantly related to viability. Larval mortality has frequently been related to adverse environmental conditions and intrinsic factors affecting feeding ability and vulnerability to predators. Our study offers evidence indicating that a significant portion of fish mortality occurs during the endogenous (yolk) and mixed (yolk /prey) feeding period in the absence of predators, revealing that marine fish with high fecundity, such as small pelagics, can spawn a relatively large amount of eggs resulting in small larvae with no chances to survive. Our findings help to better understand the mass mortalities occurring at early stages of marine fish.

[Distribution of Aedes albopictus (Skuse) in Nuevo León, México, 2001-2004].

Science.gov (United States)

Orta-Pesina, Héctor; Mercado-Hernández, Roberto; Elizondo-Leal, José Fernando

2005-01-01

To determine the distribution of Aedes albopictus (Skuse) in Nuevo Leon between 2001 and 2004. Standardized methods were used to collect 6371 samples of mosquito's larvae from 167 sites. The proportions of samples positive for Ae. albopictus were obtained by municipality and year, using the software program Excel. There were 1179 samples positive for Ae. albopictus. This species was distributed over 10 municipalities, as follows: Five on the Gulf of Mexico Coastal Plains, which predominantly have a semi-warm, sub-humid climate, and precipitations almost year round (Allende, Montemorelos, Linares, General Teran, and Santiago); two (Sabinas Hidalgo, and Cadereyta) localized on the North American Great Plains, which have a warm, semiarid climate, and scarce precipitations. The final three were Apodaca, San Nicolas, and Escobedo distributed over the metropolitan area of Monterrey City. Up to January 2004, the second most important epidemiological vector in the transmission cycle of Ae. albopictus worldwide was found in ten municipalities of Nuevo Leon State, Mexico.

El Programa de Cultura del Agua en el noreste de México. ¿Concepto utilitario, herramienta sustentable o requisito administrativo?

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María Eugenia González Ávila

2011-01-01

Full Text Available El Programa de Cultura del Agua, implantado en Acuña, Coahuila; Nuevo Laredo y Reynosa, Tamaulipas, y en Monterrey, Nuevo León, resulta poco eficaz y eficiente en la mayoría de dichas ciudades. El organismo operador de Nuevo León es el más destacado, ya que se basa más en la experiencia y continuidad de los encargados, que en la obtención de resultados cuantificables. Por lo tanto, es importante considerar dicho programa en las políticas hídricas de México, como una herramienta útil para difundir la cultura del agua, donde se incluyan indicadores cuantificables que permitan evaluar su repercusión y efectividad en la población a corto, mediano y largo plazo, a fin de lograr un uso, manejo y conservación sustentable del recurso, en esta y otras regiones de México.

¿Cuanto cuesta la calidad?

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Cruz, J

2005-07-01

Full Text Available En este artículo abordaremos el tema del impacto económico que tiene la calidad en los costos de operación de la empresa, distinguiendo dos elementos principales del costo total de la calidad: 1 Costo de la pobre calidad, y 2 Costo de la calidad. Se presentará el marco teórico de la teoría de costos de calidad y se presentará un estudio de campo que se realizó en el Área Metropolitana de Monterrey el cuál tuvo por objetivo explorar el fenómeno de la calidad y su incidencia en los costos de calidad en la empresa. Este artículo evidenciará la necesidad que tiene la empresa de implantar sistemas de medición de los costos de calidad y a partir de estos indicadores definir las estrategias para la mejora continua en su organización.

Intra and extra school factors associated with educational backwardness in vulnerable communities

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Elizabeth Mendoza Cárdenas

2017-01-01

Full Text Available Six Objectives of development of the Millennium focused on childhood were stablished on 2000 with the aid of the 189 countries that form the United Nations, due to the situation presented by children from all around the world. One of the objectives strives to assure that by 2015 all children will complete their primary education. A series of individual and structural factors keep children from staying in school. According to several studies, external factors, such as poverty and gender end up being the key reasons that keep children away from school. This paper has the objective of showing the result of an exploratory study realized from a mixed focus over the perception that directives, professors, and citizens from Polígono San Bernabé (Monterrey, regarding the factors that promote educational lay back within basic education. The main strategies used by institutions to avoid this issue will also be presented.

Comunidades de Marca: otra manera de sostener conversaciones y generar Relaciones Públicas.- Brand Communities: another way to generate conversations and Public Relations

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Mariela Perez Chavarria

2012-05-01

Full Text Available En este trabajo se exploran las ventajas de cultivar las llamadas comunidades de marca, término que proviene de la mercadotecnia pero que está en íntima relación con la con las relaciones públicas, el diálogo, y en general, las conversaciones y los lazos generados entre las personas a través de internet. El estudio se centra en Universidades por el estrecho vínculo que se crea entre éstas y sus egresados, y analiza en particular el caso de las asociaciones Exatec (grupos de egresados del Tec de Monterry para revisar los beneficios que estas agrupaciones brindan a la institución, así como las estrategias que la universidad lleva a cabo para mantener vivo el lazo con estas comunidades. A través de una metodología cualitativa (entrevistas con representantes de Tecnológico de Monterrey y con cinco asociaciones se explora este exitoso caso mexicano.

Mujeres jefas de hogar y su dinámica familiar

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Brígida García

2005-01-01

Full Text Available Nuestro interés particular en este trabajo es complementar la discusión más frecuente sobre las condiciones materiales de vida que caracterizan a los hogares con jefas mujeres, con un análisis de dimensiones menos conocidas de su vida familiar, tales como la división del trabajo doméstico y del cuidado de los hijos, la participación de los diferentes miembros en la toma de decisiones y la presencia o ausencia de violencia, haciendo siempre hincapié en la diferenciación social que caracteriza a estas unidades. La fuente de información es la Encuesta sobre Dinámica Familiar (Dinaf para las áreas metropolitanas de México y Monterrey. Las mujeres jefas de hogar son estudiadas en comparación con las esposas y las otras mujeres residentes, utilizando análisis de clasificación múltiple.

La Revolución Mexicana en Nuevo León (1908-1917: la irrupción pública de los empresarios en la política local

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Gustavo Herón Pérez Daniel

2011-01-01

Full Text Available La Revolución de 1910 traerá a Nuevo León la irrupción de distintos grupos armados en la ciudad de Monterrey, pero al mismo tiempo la aparición constante, en la administración pública, de los empresarios regiomontanos. Inicialmente significará el ocaso de la época reyista en la localidad. El avance modernizador económico se verá detenido por las acciones revolucionarias y militares en la entidad. Pero surgirá la "Comuna empresarial", como forma de organización cuya presencia intentará ordenar el caos revolucionario, aunque sea de manera local. El trabajo es un intento por señalar el impacto revolucionario en la entidad, pero al mismo tiempo es una narración desde la historiografía local, se bosqueja una crónica política detallada del periodo. Se aportan datos, nombres, fechas; se cuentan acciones y disposiciones.

Factores mercadológicos utilizados por las organizaciones de producción cinematográfica mexicanas (OPCM y su impacto en los ingresos en taquilla:.

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David Fernando Lozano Trevino

2012-01-01

Full Text Available This document is intended to capture the marketing factors impact in the spectator purchase decisions of ticket at the box office in Monterrey and it metropolitan area, thereby increasing the income of the Mexican Motion Pictures Production Organizations (OPCM. Reference is made to the Mexican booming film industry of the 40´s generating economic and cultural wealth. We analyze the recent performance of Mexican and U.S. cinema referencing to the years from 2002 to 2007. We discuss some factors that can be used as supporting tools for marketing by de OPCM in their productions, such as special effects, enhancing the club effect, merchandising, genre and film classification, as well as the release date. We study in detail the marketing main factors used by the OPCM: advertising, critics, talent, recommendations and availability in theaters; and through the application of a poll and a linear regression analysis, we determine the impact of these on box office revenues.

Macro-Scale Patterns in Upwelling/Downwelling Activity at North American West Coast.

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Romeo Saldívar-Lucio

Full Text Available The seasonal and interannual variability of vertical transport (upwelling/downwelling has been relatively well studied, mainly for the California Current System, including low-frequency changes and latitudinal heterogeneity. The aim of this work was to identify potentially predictable patterns in upwelling/downwelling activity along the North American west coast and discuss their plausible mechanisms. To this purpose we applied the min/max Autocorrelation Factor technique and time series analysis. We found that spatial co-variation of seawater vertical movements present three dominant low-frequency signals in the range of 33, 19 and 11 years, resembling periodicities of: atmospheric circulation, nodal moon tides and solar activity. Those periodicities might be related to the variability of vertical transport through their influence on dominant wind patterns, the position/intensity of pressure centers and the strength of atmospheric circulation cells (wind stress. The low-frequency signals identified in upwelling/downwelling are coherent with temporal patterns previously reported at the study region: sea surface temperature along the Pacific coast of North America, catch fluctuations of anchovy Engraulis mordax and sardine Sardinops sagax, the Pacific Decadal Oscillation, changes in abundance and distribution of salmon populations, and variations in the position and intensity of the Aleutian low. Since the vertical transport is an oceanographic process with strong biological relevance, the recognition of their spatio-temporal patterns might allow for some reasonable forecasting capacity, potentially useful for marine resources management of the region.

Metals and metalloids in Little Penguin (Eudyptula minor) prey, blood and faeces.

Science.gov (United States)

Finger, Annett; Lavers, Jennifer L; Dann, Peter; Kowalczyk, Nicole D; Scarpaci, Carol; Nugegoda, Dayanthi; Orbell, John D

2017-04-01

Piscivorous species like the Little Penguin (Eudyptula minor) are particularly at risk of being negatively impacted by pollution due to their heightened exposure through aquatic food chains. Therefore, determining the concentration of heavy metals in the fish prey of seabirds is an essential component of assessing such risk. In this study, we report on arsenic, cadmium, mercury, lead and selenium concentrations in three fish species, which are known to comprise a substantial part of the diet of Little Penguins at the urban colony of St Kilda, Melbourne, Australia. Metal concentrations in the fish sampled were generally within the expected limits, however, arsenic and mercury were higher than reported elsewhere. Anchovy (Engraulis australis) and sandy sprat (Hyperlophus vittatus) contained higher Hg concentrations than pilchard (Sardinops sagax), while sandy sprat and pilchard contained more selenium. We present these findings together with metal concentrations in Little Penguin blood and faeces, sampled within weeks of the fish collection. Mercury concentrations were highest in the blood, while faeces and fish prey species contained similar concentrations of arsenic and lead, suggesting faeces as a primary route of detoxification for these elements. We also investigated paired blood - faecal samples and found a correlation for selenium only. Preliminary data from stable isotope ratios in penguin blood indicate that changes in penguin blood mercury concentrations cannot be explained by trophic changes in their diet alone, suggesting a variation of bioavailable Hg within this semi-enclosed bay. Copyright © 2017 Elsevier Ltd. All rights reserved.

2012 Joint U.S.-Canada Integrated Acoustic and Trawl Survey of Pacific Hake (Merluccius productus) and Pacific Sardine (Sardinops sagax) (SH1204, EK60)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Scientists from the Fishery Resource Analysis and Monitoring (FRAM) division at the NOAA Fisheries Northwest Fisheries Science Center (NWFSC), the Fishery Resources...

Searching for a stock structure in Sardina pilchardus from the Adriatic and Ionian seas using a microsatellite DNA-based approach

DEFF Research Database (Denmark)

Ruggeri, Paolo; Splendiani, Andrea; Bonanomi, Sara

2013-01-01

of homozygote individuals higher than expected at Hardy-Weinberg equilibrium. The inter-population differentiation level estimated by AMOVA, qST and rRST and Bayesian descriptors detected no signs of population differentiation between the samples analysed. These results are consistent with previous studies...

Searching for a stock structure in Sardina pilchardus from the Adriatic and Ionian seas using a microsatellite DNA-based approach

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Paolo Ruggeri

2013-10-01

Full Text Available In the present study the genetic variability of European sardine from Adriatic and Ionian seas was investigated in order to detect the occurrence of genetic structure within and between these basins. In several samples the analysis of genetic variability at eight microsatellite loci showed a number of homozygote individuals higher than expected at Hardy-Weinberg equilibrium. The inter-population differentiation level estimated by AMOVA, qST and rRST and Bayesian descriptors detected no signs of population differentiation between the samples analysed. These results are consistent with previous studies based on allozymes and several mitochondrial DNA markers and add further evidence contradicting the early identification, based on morphological and reproductive data, of two sub-populations in the Adriatic Sea.

Stressful situations in life, use and abuse of alcohol and drugs by elderly in Monterrey, Mexico

OpenAIRE

Castillo,Bertha Alicia Alonso; Marziale,Maria Helena Palucci; Castillo,Maria Magdalena Alonso; Facundo,Francisco Rafael Guzmán; Meza,Marco Vinicio Gómez

2008-01-01

This is a descriptive, qualitative, and correlation study with 112 elderly aged 60 years or older. This study aimed to identify differences in alcohol consumption according to gender and marital status, and differences in the consumption of medical drugs by gender. It also aims to determine differences in stressful life events by gender, and differences in stressful life events associated to alcohol and medical drugs use and abuse, as well as to know their perceptions on the most stressful li...

Participants' perception of pharmaceutical clinical research: a cross-sectional controlled study

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González-Saldivar G

2016-04-01

Full Text Available Gerardo González-Saldivar,1 René Rodríguez-Gutiérrez,2 José Luis Viramontes-Madrid,3 Alejandro Salcido-Montenegro,2 Kevin Erick Gabriel Carlos-Reyna,2 Andrés Marcelo Treviño-Alvarez,2 Neri Alejandro Álvarez-Villalobos,4 José Gerardo González-González2 1Ophthalmology Department, 2Endocrinology Division, Hospital Universitario “Dr. José E. González”, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, 3Instituto Nacional de Salud Pública, Cuernavaca, Morelos, 4Medical Statistics Department, Hospital Universitario “Dr. José E. González”, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico Background: There is scarce scientific information assessing participants’ perception of pharmaceutical research in developed and developing countries concerning the risks, safety, and purpose of clinical trials.Methods: To assess the perception that 604 trial participants (cases and 604 nonparticipants (controls of pharmaceutical clinical trials have about pharmaceutical clinical research, we surveyed participants with one of four chronic diseases from 12 research sites throughout Mexico.Results: Participation in clinical trials positively influences the perception of pharmaceutical clinical research. More cases (65.4% than controls (50.7% perceived that the main purpose of pharmaceutical research is to cure more diseases and to do so more effectively. In addition, more cases considered that there are significant benefits when participating in a research study, such as excellent medical care and extra free services, with this being the most important motivation to participate for both groups (cases 52%, controls 54.5%. We also found a sense of trust in their physicians to deal with adverse events, and the perception that clinical research is a benefit to their health, rather than a risk. More controls believed that clinical trial participants’ health is put at risk

{sup 137}Cs Distribution in the Northern Adriatic Sea (2006-2010)

Energy Technology Data Exchange (ETDEWEB)

Pavicic-Hamer, D. [' Ruder Boskovic' Institute, Centre for Marine Research, Rovinj (Croatia); Barisic, D., E-mail: pavicic@cim.irb.hr [' Ruder Boskovic' Institute, Division for Marine and Environmental Research, Zagreb (Croatia)

2013-07-15

Artificial radioactivity in the northern Adriatic Sea was assessed by analysis of {sup 137}Cs concentrations in seawater, sediment and marine organisms. A comparison of radioactive contamination was made between different parts of the marine ecosystem including the area of the Po river delta, the protected area of the Lim bay and the Rovinj coastal area in the period from 2006 to 2010. In the area of the Po river delta {sup 137}Cs concentrations in seawater had decreased back to pre-Chernobyl values (2.48 Bq/m), although in sediment they were slightly higher (8.70 Bq/kg). Inside the Lim bay area {sup 137}Cs concentrations in surface water were low (1.93 Bq/m) and, in the mussel Mytilus galloprovincialis, even undetectable in this period. In the Rovinj coastal area {sup 137}Cs concentrations in surface water remained constant (2.23 Bq/m), as well as in the surface sediment (1.88 Bq/kg). {sup 137}Cs concentrations were detectable at very low activity levels in Mugil cephalus and Sardina pilchardus. The data indicate that some species such as the intertidal brown algae Fucus virsoides and the benthic fish Mullus barbatus are better bio-accumulators of {sup 137}Cs than others. These species should be used as bio-indicators in future monitoring schemes in the A driatic Sea. (author)

Desodorización de aceite de pescado mediante destilación a alto vacío: preservación de las características químicas del aceite

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Nieto, S.

1993-02-01

Full Text Available The construction and the operation conditions of a high vacuum glass-equipment for deodorizing sardine oil at laboratory scale is described. The equipment working at 120°C and at a pressure of 0.05-0.1 mmHg maintains unchanged the n-3 fatty acid composition of the oil producing a considerable reduction in the cholesterol and peroxide content of the oil. The stripper, having a throughput of 1500-1800 mL/hr, allows the obtaining of a high quality fish oil suitable for experimental and for pharmacological and/or nutritional applications.

Se describe la construcción y condiciones de operación de un destilador de vidrio de alto vacío que permite, a escala de laboratorio, la desodorización del aceite de sardina española. El equipo operando a temperaturas no superiores a 120°C y a una presión constante de 0,05-0,1 mmHg no altera la composición de ácidos grasos n-3 del aceite y permite una disminución considerable del colesterol y de los peróxidos orgánicos. La destilación permite obtener un aceite de alta calidad con un rendimiento de 1500-1800 mL/hr que puede ser utilizado para fines experimentales o para uso farmacológico y/o nutricional.

Preparation of triacylglycerols rich in omega-3 fatty acids from sardine oil using a Rhizomucor miehei lipase: focus in the EPA/DHA ratio.

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Bispo, Paulo; Batista, Irineu; Bernardino, Raul J; Bandarra, Narcisa Maria

2014-02-01

The increasing evidence on the differential biochemical effects of eicosapentaenoic acid (EPA)/docosahexaenoic acid (DHA) raises the need of n-3 highly unsaturated fatty acid concentrates with different amounts of these fatty acids. In the present work, physicochemical and enzymatic techniques were combined to obtain acylglycerols, mainly triacylglycerols (TAG), rich in n-3 fatty acids. Sardine oil was obtained by washing sardine (Sardina pilchardus) mince with a NaHCO3 solution, hydrolyzed in a KOH-ethanol solution, and concentrated with urea. The esterification reaction was performed in the stoichiometric proportion of substrates for re-esterification to TAG, with 10 % level of Rhizomucor miehei lipase based on the weight of substrates, without any solvent, during 48 h. This procedure led to approximately 88 % of acylglycerols, where more than 66 % were TAG and the concentration of n-3 fatty acids was higher than 60 %, the EPA and DHA ratio (EPA/DHA) was 4:1. The content of DHA in the unesterifed fraction (free fatty acids) increased from 20 to 54 %, while the EPA level in the same fraction decreased from 33 to 12.5 % (EPA/DHA ratio ≈1:4). Computational methods (density functional theory calculations) have been carried out at the B3LYP/6-31G(d,p) level to explain some of the experimental results.

The 2012 Joint U.S.-Canada Integrated Acoustic and Trawl Survey of Pacific Hake (Merluccius productus) and Pacific Sardine (Sardinops sagax) (SH1204, ME70)

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National Oceanic and Atmospheric Administration, Department of Commerce — Scientists from the Fishery Resource Analysis and Monitoring (FRAM) division at the NOAA Fisheries Northwest Fisheries Science Center (NWFSC), the Fishery Resources...

El enigma de las montañas reales: propuesta narrativa de David Toscana

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Iwona Kasperska

2013-01-01

Full Text Available The objective of this paper is to reflect on some features of David Toscana’s novel Los puentes de Königsberg. In this contribution by the Northern Mexican writer there are unusual parallelisms between different realities of the cities of Monterrey (Mexico and Königsberg (East Prussia, which become the basis of the structure of the novel. In this framework the author situates certain eccentric characters, providing them with a “double life”, a real Mexican one and an imaginary East-Prussian one, in order to contrast the cities and validate the superiority of Königsberg, the actual protagonist of the novel. Toscana uses selected criteria, such as scientific and cultural contributions by the cities, their different historical fates, and the moral attitudes of their inhabitants towards discrimination, war crimes and gender violence, which implies a severe critique of Monterrey’s society. The set of parallelisms between the cities is totally convincing as a fictional structure and emphasizes the most prominent quality of Toscana’s analysed prose.

Acknowledgment - Issue 60

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Executive Editor

2015-11-01

Full Text Available Biblios wish to acknowledge the support of the following professionals who participated in the review process of submissions for our issue 60.ReviewersAndré Ancona Lopez (Universidade de Brasília - UnB, BrasilGildenir Carolino Santos (Universidade Estadual de Campinas - UNICAMP, BrasilJacira Gil Bernardes (Universidade Federal do Rio Grande do Sul - UFRGS, BrasilRodrigo Donoso Vegas (Universidad de Chile - UCHILE, ChileSaúl Hiram Souto Fuentes (Universidad de Monterrey - UDEM, MéxicoReviewers invitedAlejandro Uribe Tirado (Universidad de Antioquia - UDEA, ColombiaFernanda Passini Moreno (Universidade de Brasília - UnB, BrasilJosé Bernal Rivas Fernández (Universidad de Costa Rica - UCR, Costa RicaMarta Lígia Pomim Valentim (Universidade Estadual Paulista - UNESP, BrasilOrlando Corzo Cauracurí (Universidad Nacional Mayor de San Marcos - UNMSM, PerúTerezinha Elisabeth da Silva (Universidade Estadual de Londrina - UEL, BrasilZaira Regina Zafalon (Universidade Federal de São Carlos - UFSCAR, BrasilIn the same way our acknowledge to University Library System (University of Pittsburgh - PITTS, USA by constant technical support and advice for our journal.

Alfonso Reyes en dos tiempos. Entre el arielismo y la doble experiencia literaria: "La venganza creadora" y "La cena"

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Pablo Aparicio Durán

2013-06-01

Full Text Available Es sabido que Alfonso Reyes dejó una enorme impronta intelectual y literaria no sólo en la literatura de su país, Méjico, sino en toda la literatura hispanoamericana. Pero, aparte de las dimensiones de la huella dejada por el autor, lo realmente interesante es el terreno que pisa, y ese, para nosotros, es el terreno ideológico. Así, en el presente artículo ofrecemos una panorámica general sobre la significación cultural del autor mejicano, precisamente para tratar de delimitar que una cosa son las ideologías culturales explícitas y otra cosa es el inconsciente ideológico/literario implícito. En este sentido, se ha efectuado el análisis de dos cuentos del prolífico escritor de Monterrey (La venganza creadora y La cena en relación con otros dos de Edgar Allan Poe y Ernest Hemingway (Allá en Michigan y La casa Usher, respectivamente.

[Prevalence of type 2 diabetes mellitus in elderly patients and associated factors in a general hospital of the north of Mexico].

Science.gov (United States)

Gutiérrez-Hermosillo, Hugo; Díaz de León-González, Enrique; Pérez-Cortez, Patricia; Cobos-Aguilar, Héctor; Gutiérrez-Hermosillo, Violeta; Eloy Tamez-Pérez, Héctor

2012-01-01

There are few reports on the impact of diabetes in the geriatric population. To determine the prevalence of diabetes in the geriatric population in a hospital in Northeast Mexico. A cross-sectional study and a probabilistic sampling were made. The files of outpatients of the geriatrics department in a General Hospital in Monterrey, Mexico,were examined. The information obtained from these files was related to the patient's personal pathological and non-pathological background, besides a full geriatric evaluation. A total of 171 files were examined, out of which 97 (56.7%) belonged to females and 74 (43.3%) to males. The mean age was 78 ± 6.9 years. Diabetes was found in 76 patients (44%), major depression was found in 85 patients (50%), with the latter being more common in diabetic patients (p = 0.002). It was also found that diabetic patients take more drugs during their disease. Adjusting for age, gender, and academic level, cognitive impairment was found in 110 patients (64.3%). Diabetes mellitus is more frequent in the geriatric population and it uses more resources.

Ingestion of microplastics and natural fibres in Sardina pilchardus (Walbaum, 1792) and Engraulis encrasicolus (Linnaeus, 1758) along the Spanish Mediterranean coast.

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Compa, Montserrat; Ventero, Ana; Iglesias, Magdalena; Deudero, Salud

2018-03-01

The ingestion of microplastics and natural fibres (microplastics and natural fibres. A latitudinal increase in condition index (Fulton's K) of S. pilchardus gave an indication that larger individuals with better physical condition are less likely to ingest microplastics and natural fibres. Fibres were the most frequent particle type (83%) and Fourier Transform Infrared spectroscopy (FT-IR) analysis indicated polyethylene terephthalate was the most common microplastics material (30%). Results from this study show that both microplastics and natural fibres of anthropogenic origin are common throughout the pelagic environment along the Spanish Mediterranean coast. Copyright © 2018 Elsevier Ltd. All rights reserved.

Effect of baking of sardine (Sardina pilchardus) and frying of anchovy (Engraulis encrasicholus) in olive and sunflower oil on their quality.

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Zotos, Anastasios; Kotaras, Akylas; Mikras, Emmanouil

2013-02-01

Quality changes due to oven-baking of sardine for 20, 40, 50 and 60 min and due to deep frying of anchovy for 2, 3, 4 and 5 min in olive and sunflower oil were studied. Linear increase in total losses with the time of processing was observed. A linear inverse relationship was observed between moisture/lipid and moisture/protein due to time of baking of sardines and time of frying of anchovies (wet matter). However, no changes were detected in sardine samples due to time of baking (dry matter), while a reduction in proteins and ash followed by an increase in lipids was detected in fried anchovies due to time of frying (dry matter). The fatty acid profiles indicated that a rich in EPA + DHA (33.16%) and in ω-3/ω-6 ratio (9.40) baked sardines can be produced in 20 min at 200 °C. The fatty acid profiles of fried anchovies tremendously changed, indicating entirely different products. Olive oil is probably a better medium to fry fish products, since either the two beneficial fatty acids (EPA and DHA) detected at higher concentrations in anchovies fried in olive oil or the ω-3/ω-6 ratio remained at higher values (0.71-2.56). An increase of cholesterol and squalene content with increasing the time of baking was detected in sardine samples, probably due to decline of moisture content. On the contrary, cholesterol significantly reduced due to frying of anchovy in olive oil. Simultaneously squalene concentration significantly and linearly increased, from 3.87 mg/100 g in the unprocessed anchovies to 73.25 mg/100 g in the samples fried for 5 min, indicating its existence at beneficial levels, besides low cholesterol concentration detected in fried olive oil and squalene concentration gradually and linearly decreased, confirming the absorption from the anchovy samples. Similar was the changes of cholesterol and squalene in anchovies samples fried in sunflower oil.

Managing small-scale commercial fisheries for adaptive capacity: insights from dynamic social-ecological drivers of change in Monterey Bay.

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Aguilera, Stacy E; Cole, Jennifer; Finkbeiner, Elena M; Le Cornu, Elodie; Ban, Natalie C; Carr, Mark H; Cinner, Joshua E; Crowder, Larry B; Gelcich, Stefan; Hicks, Christina C; Kittinger, John N; Martone, Rebecca; Malone, Daniel; Pomeroy, Carrie; Starr, Richard M; Seram, Sanah; Zuercher, Rachel; Broad, Kenneth

2015-01-01

Globally, small-scale fisheries are influenced by dynamic climate, governance, and market drivers, which present social and ecological challenges and opportunities. It is difficult to manage fisheries adaptively for fluctuating drivers, except to allow participants to shift effort among multiple fisheries. Adapting to changing conditions allows small-scale fishery participants to survive economic and environmental disturbances and benefit from optimal conditions. This study explores the relative influence of large-scale drivers on shifts in effort and outcomes among three closely linked fisheries in Monterey Bay since the Magnuson-Stevens Fisheries Conservation and Management Act of 1976. In this region, Pacific sardine (Sardinops sagax), northern anchovy (Engraulis mordax), and market squid (Loligo opalescens) fisheries comprise a tightly linked system where shifting focus among fisheries is a key element to adaptive capacity and reduced social and ecological vulnerability. Using a cluster analysis of landings, we identify four modes from 1974 to 2012 that are dominated (i.e., a given species accounting for the plurality of landings) by squid, sardine, anchovy, or lack any dominance, and seven points of transition among these periods. This approach enables us to determine which drivers are associated with each mode and each transition. Overall, we show that market and climate drivers are predominantly attributed to dominance transitions. Model selection of external drivers indicates that governance phases, reflected as perceived abundance, dictate long-term outcomes. Our findings suggest that globally, small-scale fishery managers should consider enabling shifts in effort among fisheries and retaining existing flexibility, as adaptive capacity is a critical determinant for social and ecological resilience.

Cestodes of the blue shark, Prionace glauca (Linnaeus 1758), (Carcharhiniformes: Carcharhinidae), off the west coast of Baja California Sur, Mexico.

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Méndez, Oscar; Galván-Magaña, Felipe

2016-03-03

The cestode species recovered from the spiral intestines of 27 blue sharks (Prionace glauca) (Linnaeus, 1758) are reported from the western coast of Baja California Sur (BCS). The sampling was undertaken on a monthly basis from January 2003 to January 2004. The helminthological examination indicated the presence of four species of cestodes: Platybothrium auriculatum Yamaguti, 1952; Prosobothrium japonicum Yamaguti, 1934; Anthobothrium caseyi (Yamaguti, 1934) Ruhnke & Caira, 2009; and Paraorygmatobothrium prionacis (Yamaguti, 1934) Ruhnke, 1994. Of all the 27 sharks examined, 88.8% were infected with at least one cestode species. The most frequent species was P. auriculatum infecting 85% of the spiral intestines examined. In contrast the species with the highest mean intensity was P. prionacis (80.4 200). The species richness of cestodes in P. glauca is very similar in other regions of the world despite its wide distribution; however, this richness is low compared with other species of sharks within the same family. The feeding and host-specific are important factors that influence the parameters of infection of cestodes in this shark. On the west coast of BCS, Prionace glauca feeds mainly on red crab Pleuroncodes planipes Stimpson, 1860; squids Gonatus californiensis Young, 1972, Ancistrocheirus lesueurii (D'Orbigny, 1842), Haliphron atlanticus Steenstrup, 1861, and low proportion of fish teleosts as Merluccius productus (Ayres, 1855), Sardinops sp. Hubbs, 1929 and Scomber japonicus Houttuyn, 1872. We speculate that these prey could be involved as the second intermediate hosts of these cestodes, as in other members of these genera, although the life cycles of none are known.

Validez de dos pruebas para evaluar la percepción materna del peso del hijo Validity of two tests to evaluate maternal perception of child's weight

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Yolanda Flores-Peña

2009-12-01

Full Text Available OBJETIVOS: Evaluar la percepción materna del peso del hijo por medio de dos pruebas, percepción por palabras (PP y percepción por imágenes (PI, así como evaluar la validez de las dos pruebas mediante la determinación de la sensibilidad y especificidad. MATERIAL Y MÉTODOS: Se seleccionó un total de 418 diadas madre-hijo del área urbana de Monterrey Nuevo León; a las madres se les aplicó un cuestionario de percepciones sobre la apariencia física y la salud. Se calculó sensibilidad y especificidad. El índice de masa corporal medido del hijo fue el estándar de oro. RESULTADOS: El 20.34% de madres de niños con sobrepeso (SP y 7.41% de madres de niños con obesidad (OB percibieron el sobrepeso por la prueba PP; y 62.71% de madres de niños con SP y 81.48% de niños con OB por la prueba PI. Las madres subestimaron el SP-OB; la sensibilidad y especificidad de la PP fueron de 12 y 21% y las de PI de 75 y 15%, respectivamente. CONCLUSIONES: Las madres de niños con SP-OB subestiman el peso del hijo. Las imágenes son útiles para que las madres reconozcan esta situación.OBJETIVE: To assess maternal perception of their children weight using words (PP and using images (PI and evaluate the validity of the two tests by determining their sensitivity and specificity. MATERIAL AND METHODS: A total of 418 mother-child diads were selected from urban areas in the Monterrey, Nuevo León area. A questionnaire was administered to the mothers about perceptions regarding physical appearance and health. Sensitivity and specificity were calculated and the body mass index measurement of the child was the gold standard. RESULTS: Mothers underestimated overweight (SP and obesity (OB, with 20.34% of mothers of children with SP and 7.41% of children with OB perceiving their child's condition with the PP test, and 62.71% of mothers of children with SP and 81.48% of those of children with OB perceiving it with the PI test. The tests had 12% sensitivity and 21

Secuencia didáctica “Quien sabe hablar del camino es porque andado lo tiene” | Didactic Sequence ‘Quien sabe hablar del

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Robertha Leal

2015-05-01

Full Text Available Resumen La secuencia didáctica que aquí presentamos se ha elaborado con una doble finalidad: a como parte del curso Competencias didácticas del docente de Lengua, organizado en la universidad Tecnológico de Monterrey (México, cuyo objetivo era reflexionar sobre el lugar de la gramática en el aprendizaje de los usos de la lengua en un contexto académico; b para su experimentación en la asignatura “Fundamentos de la escritura” de la citada universidad, cursada por los alumnos de primer curso con deficiencias en su competencia lingüística y comunicativa1, con el propósito de proporcionar a estos estudiantes un marco de trabajo en el que la actividad metalingüística sea un componente importante de las actividades de comprensión y composición de textos escritos. Describiremos, en primer lugar, la secuencia didáctica. En segundo lugar, explicitaremos las decisiones que se han debido tomar en campos tan relevantes como la caracterización de la práctica discursiva que va a servir de eje a la secuencia, la selección de los contenidos gramaticales y el planteamiento didáctico de las actividades de aprendizaje. Cerraremos el artículo con unas notas sobre la experimentación de la secuencia didáctica en el grupo de alumnos para el que estaba destinada. Abstract The didactic sequence at hand, has been developed with a double purpose: a as part of the course Didactic Competencies of Language Teachers, organized in the Technological University of Monterrey (Mexico, which aimed to reflect on the place of grammar within the field of the learning of language usages in academic context; b for experimentation on the course Fundamentals of Writing of that university, which is taken by first-year students with deficiencies in their linguistic and communicative competences. The experiment consists of providing these students with a framework in which metalinguistic activities become an important component of both, comprehension activities and

Efectos de la contención en hipoxia percutánea posterior a la aspiración endotraqueal en neonatos Effects of containment on percutaneous hipoxia after endotracheal suctioning in neonates

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Bertha Cecilia Salazar González

2007-03-01

Full Text Available Objetivo: Verificar la efectividad de la contención en el tiempo de recuperación de la hipoxia percutánea de neonatos prematuros con Síndrome de Dificultad Respiratoria, posterior a la aspiración con y sin bolsa de oxígeno pre-aspiración. La contención es una técnica que limita los movimientos del neonato simulando el ambiente uterino y se propone como ayuda para inducir la relajación en los prematuros. Material y métodos: Se diseñó un estudio de mediciones repetidas con un grupo; cada neonato fue su propio control. Se estudiaron 30 neonatos nacidos entre la semana 26 y 36 de gestación en una Unidad de Cuidados Intensivos Neonatal de un Hospital de Seguridad Social de Monterrey, de agosto a diciembre de 2002. Se observaron cuatro procedimientos de aspiración endotraqueal: dos sin contención y dos con contención. Resultados: El peso al nacer de los neonatos osciló entre .790 y 3.275 Kg. De acuerdo con el expediente, 25 de ellos (83.30% presentaron Síndrome de Dificultad Respiratoria moderado. La prueba de análisis de varianza, F(3,87= 7.77, p Objective: The purpose was to verify the effectiveness of containment using pre-suction oxygen bag versus non pre-suction oxygen bag on recovery time of percutaneous hipoxia values after endotracheal suctioning of premature infants with respiratory distress syndrome. Containment is proposed as an aid to induce relaxation in premature babies; it is a technique that limits a neonate’s movements resembling the uterus environment. Material and methods: A crossover design with one group was used, each neonate serve as its own control. This study was conducted in 30 neonates who had been born between 26 and 36 weeks gestational age, in a Neonatal Intensive Care Unit of a Social Security’s Hospital in Monterrey. Each neonate was observed during four suction procedures: two without containment and two with containment. Results: The neonate’s weight ranged from .790 to 3.275Kg., according to

Diet of bottlenose dolphins (Tursiops truncatus from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses.

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Joan Giménez

Full Text Available The ecological role of species can vary among populations depending on local and regional differences in diet. This is particularly true for top predators such as the bottlenose dolphin (Tursiops truncatus, which exhibits a highly varied diet throughout its distribution range. Local dietary assessments are therefore critical to fully understand the role of this species within marine ecosystems, as well as its interaction with important ecosystem services such as fisheries. Here, we combined stomach content analyses (SCA and stable isotope analyses (SIA to describe bottlenose dolphins diet in the Gulf of Cadiz (North Atlantic Ocean. Prey items identified using SCA included European conger (Conger conger and European hake (Merluccius merluccius as the most important ingested prey. However, mass-balance isotopic mixing model (MixSIAR, using δ13C and δ15N, indicated that the assimilated diet consisted mainly on Sparidae species (e.g. seabream, Diplodus annularis and D. bellottii, rubberlip grunt, Plectorhinchus mediterraneus, and common pandora, Pagellus erythrinus and a mixture of other species including European hake, mackerels (Scomber colias, S. japonicus and S. scombrus, European conger, red bandfish (Cepola macrophthalma and European pilchard (Sardina pilchardus. These contrasting results highlight differences in the temporal and taxonomic resolution of each approach, but also point to potential differences between ingested (SCA and assimilated (SIA diets. Both approaches provide different insights, e.g. determination of consumed fish biomass for the management of fish stocks (SCA or identification of important assimilated prey species to the consumer (SIA.

Ciclo de vida laboral de los trabajadores de alta escolaridad en la Zona Metropolitana de Monterrey (1987-2000

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Mario Alberto Jurado Montelongo

2004-01-01

Full Text Available Actualmente, los mercados laborales y las formas de inserción laboral están revalorizando ciertos elementos sociolaborales, de tal manera que es posible que exista una tendencia hacia una homogeneización de las condiciones de trabajo en los trabajadores de alta escolaridad, independientemente de ciertas características sociodemográficas. En este artículo utilizamos varios indicadores como la edad y el sexo para representar las diferencias entre los trabajadores y, por otro lado, usamos las variables ocupación, posición en el trabajo, salarios, contrato laboral y seguridad social, para indicar formas de empleo. Analizamos en primer lugar las tasas específicas de participación económica con base en las diferencias de género. Tratamos de encontrar un patrón de comportamiento tanto en hombres como en mujeres, analizamos el tránsito del empleo asalariado al no asalariado, finalmente, observaremos los cambios individuales de ocupación y de tipos de empleo.

78 FR 15341 - Auto Supply Chain Trade Mission to Mexico City and Monterrey, Mexico; September 23-26, 2013

Science.gov (United States)

2013-03-11

... opportunities include: Spare and replacement parts for gasoline and diesel engines; electrical parts, collision... an ever-growing national cargo transportation industry. Mexico's automotive industry ranks as the 8th largest vehicle producer in the world and the second-largest in Latin America. The automotive sector...

Using non-systematic surveys to investigate effects of regional climate variability on Australasian gannets in the Hauraki Gulf, New Zealand

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Srinivasan, Mridula; Dassis, Mariela; Benn, Emily; Stockin, Karen A.; Martinez, Emmanuelle; Machovsky-Capuska, Gabriel E.

2015-05-01

Few studies have investigated regional and natural climate variability on seabird populations using ocean reanalysis datasets (e.g. Simple Ocean Data Assimilation (SODA)) that integrate atmospheric information to supplement ocean observations and provide improved estimates of ocean conditions. Herein we use a non-systematic dataset on Australasian gannets (Morus serrator) from 2001 to 2009 to identify potential connections between Gannet Sightings Per Unit Effort (GSPUE) and climate and oceanographic variability in a region of known importance for breeding seabirds, the Hauraki Gulf (HG), New Zealand. While no statistically significant relationships between GSPUE and global climate indices were determined, there was a significant correlation between GSPUE and regional SST anomaly for HG. Also, there appears to be a strong link between global climate indices and regional climate in the HG. Further, based on cross-correlation function coefficients and lagged multiple regression models, we identified potential leading and lagging climate variables, and climate variables but with limited predictive capacity in forecasting future GSPUE. Despite significant inter-annual variability and marginally cooler SSTs since 2001, gannet sightings appear to be increasing. We hypothesize that at present underlying physical changes in the marine ecosystem may be insufficient to affect supply of preferred gannet main prey (pilchard Sardinops spp.), which tolerate a wide thermal range. Our study showcases the potential scientific value of lengthy non-systematic data streams and when designed properly (i.e., contain abundance, flock size, and spatial data), can yield useful information in climate impact studies on seabirds and other marine fauna. Such information can be invaluable for enhancing conservation measures for protected species in fiscally constrained research environments.

An assessment of stream water quality of the Rio San Juan, Nuevo Leon, Mexico, 1995-1996.

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Flores Laureano, José Santos; Návar, José

2002-01-01

Good water quality of the Rio San Juan is critical for economic development of northeastern Mexico. However, water quality of the river has rapidly degraded during the last few decades. Societal concerns include indications of contamination problems and increased water diversions for agriculture, residential, and industrial water supplies. Eight sampling sites were selected along the river where water samples were collected monthly for 10 mo (October 1995-July 1996). The concentration of heavy metals and chemical constituents and measurements of bacteriological and physical parameters were determined on water samples. In addition, river discharge was recorded. Constituent concentrations in 18.7% of all samples exceeded at least one water quality standard. In particular, concentrations of fecal and total coliform bacteria, sulfate, detergent, dissolved solids, Al, Ba, Cr, Fe, and Cd, exceeded several water quality standards. Pollution showed spatial and temporal variations and trends. These variations were statistically explained by spatial and temporal changes of constituent inputs and discharge. Samples collected from the site upstream of El Cuchillo reservoir had large constituent concentrations when discharge was small; this reservoir supplies domestic and industrial water to the city of Monterrey.

Evaluation of environmental genotoxicity by comet assay in Columba livia.

Science.gov (United States)

González-Acevedo, Anahi; García-Salas, Juan A; Gosálvez, Jaime; Fernández, José Luis; Dávila-Rodríguez, Martha I; Cerda-Flores, Ricardo M; Méndez-López, Luis F; Cortés-Gutiérrez, Elva I

2016-01-01

The concentrations of recognized or suspected genotoxic and carcinogenic agents found in the air of large cities and, in particular, developing countries, have raised concerns about the potential for chronic health effects in the populations exposed to them. The biomonitoring of environmental genotoxicity requires the selection of representative organisms as "sentinels," as well as the development of suitable and sensitive assays, such as those aimed at assessing DNA damage. The aim of this study was to evaluate DNA damage levels in erythrocytes from Columba livia living in the metropolitan area of Monterrey, Mexico, compared with control animals via comet assay, and to confirm the results via Micronuclei test (MN) and DNA breakage detection-fluorescence in situ hybridization (DBD-FISH). Our results showed a significant increase in DNA migration in animals from the area assayed compared with that observed in control animals sampled in non-contaminated areas. These results were confirmed by MN test and DBD-FISH. In conclusion, these observations confirm that the examination of erythrocytes from Columba livia via alkaline comet assay provides a sensitive and reliable end point for the detection of environmental genotoxicants.

Satisfacción de las madres con la atención a sus hijos hospitalizados

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María Guadalupe Moreno-Monsiváis

2011-01-01

Full Text Available El objetivo del estudio fue determinar los factores que se relacionan con la satisfacción de la madre con la atención que recibe su hijo hospitalizado. La muestra: 127 madres de niños hospitalizados en una institución pública de Monterrey, N.L., México. Estudio descriptivo correlacional. Se utilizó el cuestionario de satisfacción del familiar pediátrico. El manejo del dolor fue un factor importante para la satisfacción de las madres participantes. La satisfacción de la madre con el servicio de hospitalización se asoció con la satisfacción con la atención de enfermería (rs = 0,458; p= 0,0001. La edad del hijo, el número de hospitalizaciones previas y la percepción de su estado de salud no fueron factores significativos para la satisfacción de las madres. Es importante que el servicio de hospitalización y la atención de enfermería respondan a las expectativas de los familiares de estos pacientes.

Circadian rhythms in cognitive performance: implications for neuropsychological assessment

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Valdez P

2012-12-01

Full Text Available Pablo Valdez, Candelaria Ramírez, Aída GarcíaLaboratory of Psychophysiology, School of Psychology, University of Nuevo León, Monterrey, Nuevo León, MéxicoAbstract: Circadian variations have been found in human performance, including the efficiency to execute many tasks, such as sensory, motor, reaction time, time estimation, memory, verbal, arithmetic calculations, and simulated driving tasks. Performance increases during the day and decreases during the night. Circadian rhythms have been found in three basic neuropsychological processes (attention, working memory, and executive functions, which may explain oscillations in the performance of many tasks. The time course of circadian rhythms in cognitive performance may be modified significantly in patients with brain disorders, due to chronotype, age, alterations of the circadian rhythm, sleep deprivation, type of disorder, and medication. This review analyzes the recent results on circadian rhythms in cognitive performance, as well as the implications of these rhythms for the neuropsychological assessment of patients with brain disorders such as traumatic head injury, stroke, dementia, developmental disorders, and psychiatric disorders.Keywords: human circadian rhythms, cognitive performance, neuropsychological assessment, attention, working memory, executive functions

HABILIDADES DE PENSAMIENTO SIMBÓLICO: URDIMBRES DE SIGNIFICADO, SOCIEDAD Y TIC

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Miguel A. Romero Morett

2012-01-01

Full Text Available El objetivo y el contenido de esta intervención radica en problematizar la construcción de pensamiento simbólico en el contexto de una sociedad definida por las Tecnologías de la Información y la Comunicación que, a su vez, configuran la actual identidad y vocación de la colectividad humana, creadora, de suyo y por derecho propio, de las cargas de significado y de creación de sentido de los acontecimientos humanos y de los fenómenos naturales. Particularmente el acceso a esta problematización tiene como fuente la puesta en relación entre autores, la recuperación de la experiencia docente en la Maestría en Estudios Humanísticos del TEC de Monterrey y en el el Departamento de Filosofía de la Universidad de Guadalajara, y la constatación cuantitativa de la importancia del uso de las tecnologías de información y comunicación en México y en el Estado de Jalisco, con lo cual se conforma un triángulo cuyos vértices se remiten recíprocamente.

Interdisciplina, aprendizaje y producción de conocimiento en el laboratorio: el caso de la nanotecnología

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María de los Ángeles Pozas

2016-09-01

Full Text Available Esta investigación busca entender los procesos de producción de conocimiento en el laboratorio asociados al aprendizaje y la comunicación interdisciplinaria. La producción de conocimiento es un proceso complejo que rebasa los límites físicos del laboratorio, no obstante, el objetivo de este trabajo es observar dichos procesos en espacios socialmente organizados, es decir, en centros de investigación de diverso tipo. Esto permitirá distinguir efectos provenientes de la dinámica de las organizaciones, de aquellos más intrínsecamente ligados a todo proceso de aprendizaje y comunicación interdisciplinaria. Las observaciones se realizan en un conjunto de laboratorios de nanotecnología del Parque de Investigación e Innovación Tecnológica (PIIT ubicado en la ciudad de Monterrey. El diseño busca mostrar la forma en que distintos tipos de lenguajes científicos y de representaciones materializadas en un medio físico, se constituyen como medios de aprendizaje y puentes de comunicación entre los cuerpos de conocimiento de investigadores provenientes de distintas disciplinas.

El impacto de la información y la conducta pro - ecológica sobre del consumo doméstico de agua

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Dionicio Morales Ramírez

2017-01-01

Full Text Available Este trabajo tiene como objetivo analizar si la información, las actitudes y la disposición hacia el cuidado del agua son determinantes para explicar el consumo de agua en el sector doméstico. Como base para el análisis , el consumo de agua per capita de 1100 hogares ubicados en el Área M etropolitana de Monterrey, México fue estudiado. S e elabora ron p ruebas de asociación y se estimó una función de demanda mediante Mínimos Cuadrados Ordinarios , que incluye tant o el precio del servicio, el ingreso y una variable que captura la información que poseen los individuos sobre el cuidado del agua, las actitudes proactivas y su disposición hacia el cuidado de l a misma. Los resultados indican que e l precio, l os ing resos y las actitudes proactivas son variables importantes pa ra explicar el consumo de agua. Por ello, es importante estimular este tipo de actitudes pro - ecológicas en la sociedad para conservar este recurso natural y contribuir a alcanzar un consumo sustentable de agua.

Near-peer teaching strategy in a large human anatomy course: perceptions of near-peer instructors.

Science.gov (United States)

Reyes-Hernández, Cynthia Guadalupe; Carmona Pulido, Juan Manuel; De la Garza Chapa, Roberto Isaac; Serna Vázquez, Ruth Patricia; Alcalá Briones, Ricardo Daniel; Plasencia Banda, Perla Marina; Villarreal Silva, Eliud Enrique; Jacobo Baca, Guillermo; de la Garza Castro, Oscar; Elizondo Omaña, Rodrigo Enrique; Guzmán López, Santos

2015-01-01

Near-peer teaching (NPT) is a strategy in which senior students assume the instructor role with junior peers (mentees). Senior students develop unique skills and knowledge through NPT, an experience which extends their learning beyond content mastery. Different teaching modules featuring NPT were utilized in the human anatomy course at the School of Medicine, Autonomous University of Nuevo Leon in Monterrey, Mexico. Modules included: Theory, Clinical Hour, Imaging Anatomy, and Laboratory. The aim of this study was to assess instructor participants' perceptions on the benefits of the NPT strategy in the anatomy classroom. A survey was administered to anatomy course instructors who utilized NPT strategies during winter, fall, and spring semesters of the 2012-2013 school year. A total of 120 instructors were enrolled in the study. There were different perceptions of instructors' roles. Theory and Imaging Anatomy instructors considered themselves to be information providers and resource developers, whereas Clinical Hour and Laboratory instructors saw themselves more as facilitators, role models, and planners. All instructors' opinions on the benefits of NPT were positive. Thus, in this article, the authors find NPT to be a strategy that promotes self-learning, a vital skill. © 2014 American Association of Anatomists.

Diseño de una estrategia de comunicación basada en el uso de las redes sociales para la difusión del turismo alternativo con identidad indígena

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Imelda Hernández Morales

2013-11-01

Full Text Available El propósito de este trabajo es presentar el diseño e implementación de una estrategia de comunicación basada en el uso de las redes sociales de la web 2.0 para promover el turismo alternativo con identidad indígena. Este proyecto ha sido desarrollado por estudiantes de las carreras de Comunicación, Mercadotecnia, y Animación y Arte Digital, bajo la coordinación de dos profesoras del Tecnológico de Monterrey, Campus Cuernavaca, quienes han aplicado el modelo pedagógico conocido como Aprendizaje -Servicio. Las redes sociales y este modelo pedagógico han permitido establecer canales de comunicación efectivos entre los integrantes de las comunidades indígenas de Amatlán de Quetzalcóatl y de San Sebastián Cuentepec, en el Estado de Morelos, México, y la academia. Esta estrategia ha contribuido al fortalecimiento de la memoria colectiva, impulsa el emprendedurismo social y promueve el ejercicio de un turismo responsable y comprometido con la sustentabilidad de estas comunidades indígenas.

¿Permanecer o abandonar? Análisis de variables discriminatorias en una organización no lucrativa en México

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Aurora Máynez Guaderrama

2014-01-01

Full Text Available En el pasado reciente las organizaciones sin fines de lucro mexicanas, se han visto incrementadas en tamaño e importancia; no obstante, los esfuerzos de investigación en ellas son escasos. La retención de su talento humano se vincula principalmente con objetivos intrínsecos, por lo cual cobra relevancia analizar diversas variables con el potencial de influir en la intención de permanencia o abandono de sus colaboradores. A través de un diseño no experimental, explicativo y transversal, se encuestó a la totalidad de colaboradores de una institución humanitaria localizada en Monterrey, Nuevo León, México. Los resultados evidencian que la variable discriminante más relevante fue el compromiso afectivo, seguido de la satisfacción con la carrera laboral, la edad y la antigüedad; la creencia de autoeficacia ante el cambio organizacional no resultó significativa para la discriminación. Se discuten los resultados y se resalta la relevancia de gestionar adecuadamente el capital humano, sobretodo en aspectos relativos al compromiso afectivo.

Utilidad del índice de resistencia obtenido por ultrasonido Doppler en nódulos tiroideos de características ecográficas malignas.

Science.gov (United States)

Butrón-García, Ángel Fernando; Méndez-García, Mario

2018-01-01

La patología nodular tiroidea tiene alta prevalencia en la población general. Su diagnóstico se ha incrementado con el Doppler, con el cual se pueden detectar características sugerentes de malignidad, como elevación de los índices de resistencia y pulsatilidad. Evaluar la correlación de un índice de resistencia alto y los hallazgos histopatológicos en pacientes con sospecha ecográfica de nódulos tiroideos malignos. Estudio prospectivo, observacional, transversal y analítico de pruebas diagnósticas, en el Hospital de Especialidades 25, Monterrey, Nuevo León. Se incluyó a pacientes con nódulos tiroideos de características ecográficas malignas; se obtuvo el índice de resistencia de los nódulos, que se comparó con los hallazgos histopatológicos. Se incluyeron 48 pacientes con diagnóstico ecográfico de nódulo tiroideo maligno. La correlación de índices de resistencia elevados y diagnóstico histopatológico de nódulos tiroideos malignos fue significativa (p = 0.001). La sensibilidad fue de 73.3 %, y la especificidad de 78.7 %; valor predictivo positivo de 61.1 % y valor predictivo positivo negativo de 86.6 %. La determinación del índice de resistencia cada vez es más empleada, pero la sensibilidad y especificidad es baja y no es un método confiable, por lo que aún se requieren otros métodos complementarios. Thyroid nodular disease is highly prevalent in the general population. Its diagnosis has increased with Doppler ultrasound, by means of which features suggestive of malignancy can be detected, such as resistance and pulsatility indices elevation. To assess the correlation of a high resistance index and histopathological findings in patients with ultrasonographic suspicion of malignant thyroid nodules. Prospective, cross-sectional, analytic, observational study of diagnostic tests carried out at Specialty Hospital 25, in Monterrey, Nuevo León. Patients with thyroid nodules of ultrasonographic malignant characteristics were included

210Po and 210Pb trophic transfer within the phytoplankton–zooplankton–anchovy/sardine food web: a case study from the Gulf of Lion (NW Mediterranean Sea)

International Nuclear Information System (INIS)

Strady, Emilie; Harmelin-Vivien, Mireille; Chiffoleau, Jean François; Veron, Alain; Tronczynski, Jacek; Radakovitch, Olivier

2015-01-01

The transfer of 210 Po and 210 Pb in the food web of small pelagic fishes (from phytoplankton and zooplankton to anchovy Engraulis encrasicolus and sardine Sardina pilchardus) is investigated in the Gulf of Lion (GoL). We present original data of 210 Po and 210 Pb activity concentrations, C and N stable isotope ratios, measured (i) from different size classes of phytoplankton and zooplankton during spring and winter in different environments of the GoL, and (ii) in two fish species. Significant spatial patterns based on 210 Po, 210 Pb activity concentrations and 210 Po/ 210 Pb ratios in the different plankton size classes are evidenced by hierarchical clustering, both in spring and winter. This variability, also observed for C and N stable isotopes ratios, is connected to local specific pelagic habitats and hydrodynamics. The sampling strategy suggests that 210 Po bioaccumulation in the GoL remains at a constant level from the first (dominated by phytoplankton) to the second trophic level (zooplankton), while 210 Pb bioaccumulation shows an increase in winter. Based on stable N isotope ratios and 210 Po activity concentrations measured in anchovies and sardines, we evidence 210 Po bio-magnification along the trophic food web of these two planktivorous pelagic fishes. - Highlights: • 210 Po and 210 Pb activity concentrations in plankton vary up to a factor of two in the Gulf of Lion (East vs West). • 210 Po and 210 Pb variability is connected to local specific pelagic habitats. • Bio-magnification of 210 Po is evidenced in anchovy/sardine foodwebs

Learning styles and types of multiple intelligences in dental students in their first and tenth semester. Monterrey, Mexico, 2015.

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Juan Solís-Soto

2016-04-01

Full Text Available Introduction: Nowadays the incorporation and validation of learning styles and multiple intelligences enable teachers to obtain positive results in academic performance. This new approach has allowed to appreciate personal differences in dental students and strengthen their underdeveloped aspects, improving teaching and learning skills. Objective: To compare learning styles and multiple intelligences in a sample of Mexican dental students in their first and tenth semester. Materials and Methods: A cross-sectional study using questionnaires on learning styles (Honey-Alonso and Gardner’s multiple intelligences was performed. The study was applied to 123 students in their first semester and 157 in their tenth semester at the School of Dentistry at Universidad Autónoma de Nuevo León, evaluating differences between age and sex. Results: Logical-Mathematical intelligence (p=0.044 and Kinesthetic-Corporal intelligence (p=0.042 showed significant differences between students of both semesters, with intrapersonal and interpersonal intelligences being more prevalent. Within learning styles, the prevalent were Reflexive and Theoretical, showing a significant difference between semesters (p=0.005. Conclusion: The most prevalent learning styles in both groups were Reflexive and Theoretical, with no difference between both sexes. The most prevalent types of multiple intelligences in both sexes and groups were interpersonal and intrapersonal.

Necesidades de accesibilidad para acciones preventivas. Una perspectiva de la población en Monterrey, México en 2005

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María Eugenia Garza Elizondo

2008-01-01

Resultados: El 98,9% de la población estudiada recibió alguna acción preventiva. Los municipios con mayor necesidad de accesibilidad fueron Santa Catarina (Z -6,9, Apodaca (Z -1,5 y Benito Juárez (Z -1,2. San Pedro Garza García se vio más afectado por barreras de acceso geográfico o económico (Z -3.5; Apodaca, por percepción de calidad (Z -4,7; y Santa Catarina, por disponibilidad de recursos físicos, humanos o materiales (Z -4,9. Conclusiones: La mayor necesidad de accesibilidad se presentó en tres de los ocho municipios de la zona estudiada.

Quantifying mercury isotope dynamics in captive Pacific bluefin tuna (Thunnus orientalis

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Sae Yun Kwon

2016-02-01

Full Text Available Abstract Analyses of mercury (Hg isotope ratios in fish tissues are used increasingly to infer sources and biogeochemical processes of Hg in natural aquatic ecosystems. Controlled experiments that can couple internal Hg isotope behavior with traditional isotope tracers (δ13C, δ15N can improve the applicability of Hg isotopes as natural ecological tracers. In this study, we investigated changes in Hg isotope ratios (δ202Hg, Δ199Hg during bioaccumulation of natural diets in the pelagic Pacific bluefin tuna (Thunnus orientalis; PBFT. Juvenile PBFT were fed a mixture of natural prey and a dietary supplement (60% Loligo opalescens, 31% Sardinops sagax, 9% gel supplement in captivity for 2914 days, and white muscle tissues were analyzed for Hg isotope ratios and compared to time in captivity and internal turnover of δ13C and δ15N. PBFT muscle tissues equilibrated to Hg isotope ratios of the dietary mixture within ∼700 days, after which we observed a cessation in further shifts in Δ199Hg, and small but significant negative δ202Hg shifts from the dietary mixture. The internal behavior of Δ199Hg is consistent with previous fish studies, which showed an absence of Δ199Hg fractionation during Hg bioaccumulation. The negative δ202Hg shifts can be attributed to either preferential excretion of Hg with higher δ202Hg values or individual variability in captive PBFT feeding preferences and/or consumption rates. The overall internal behavior of Hg isotopes is similar to that described for δ13C and δ15N, though observed Hg turnover was slower compared to carbon and nitrogen. This improved understanding of internal dynamics of Hg isotopes in relation to δ13C and δ15N enhances the applicability of Hg isotope ratios in fish tissues for tracing Hg sources in natural ecosystems.

[Mercury concentration of fish in Tokyo Bay and the surrounding sea area].

Science.gov (United States)

Zhang, R; Kashima, Y; Matsui, M; Okabe, T; Doi, R

2001-07-01

Total mercury in the muscles of three fish species was analyzed in fish caught in Tokyo Bay and the surrounding sea areas, Sagami Bay and Choshi. Tokyo Bay is a semi-closed sea area surrounded by Tokyo, Kanagawa and Chiba prefectures. Sagami Bay and Choshi are open to the Pacific Ocean. A total of 412 fish consisting of northern whiting (Sillago japonica), flatfish (Limanda yokohamae) and sardine (Sardinops melanosticta) were caught in these areas over a 6 months period from November 1998 to April 1999. Total mercury concentration ranged from 0.008-0.092 microgram/g (wet wt.) in northern whiting, 0.006-0.065 microgram/g in flatfish and 0.001-0.045 microgram/g in sardine. All concentrations were below the restriction limit of fish mercury in Japan, 0.4 microgram/g of total mercury concentration. A significant correlation was found between mercury concentrations and body length or body weight in northern whiting and flatfish, irrespective of the sea area. A correlation was also found between mercury concentration in fish and their feeding habits: among the 3 species caught in the same area, crustacean feeding northern whiting had the highest, polychaete feeding flatfish moderate, and plankton feeding sardine had the lowest mercury concentration. In a comparison of mercury concentration in the same species caught in different sea areas, a higher concentration was noted in fish caught in the semi-closed sea area of Tokyo Bay, than in fish caught in the open sea areas of Sagami Bay and Choshi. This difference was most marked in fish caught at the bottom of Tokyo Bay and we considered that the mercury concentration of seawater and sediment in these areas was the cause of mercury accumulation in fish. These findings suggest that improved water quality control and environmental monitoring is necessary in semi-closed sea areas such as Tokyo Bay.

Long-term variation in a central California pelagic forage assemblage

Science.gov (United States)

Ralston, Stephen; Field, John C.; Sakuma, Keith M.

2015-06-01

A continuous 23 year midwater trawl survey (1990-2012) of the epipelagic forage assemblage off the coast of central California (lat. 36°30‧-38°20‧ N) is described and analyzed. Twenty taxa occurred in ≥ 10% of the 2037 trawls that were completed at 40 distinct station locations. The dominant taxa sampled by the 9.5 mm mesh net included a suite of young-of-the-year (YOY) groundfish, including rockfish (Sebastes spp.) and Pacific hake (Merluccius productus), two clupeoids (Engraulis mordax and Sardinops sagax), krill (Euphausiacea), cephalopods (Doryteuthis opalescens and Octopus sp.), and a variety of mesopelagic species, i.e., Diaphus theta, Tarltonbeania crenularis, "other" lanternfish (Myctophidae), deep-sea smelts (Bathylagidae), and sergestid shrimp. Annual abundance estimates of the 20 taxa were obtained from analysis of variance models, which included year and station as main effects. Principal components analysis of the abundance estimates revealed that 61% of assemblage variance was explained by the first three components. The first component revealed a strong contrast in the abundance of: (a) YOY groundfish, market squid (D. opalescens), and krill with (b) mesopelagics and clupeoids; the second component was associated with long-term trends in abundance. An evaluation of 10 different published oceanographic data sets and CTD data collected during the survey indicated that seawater properties encountered each year were significantly correlated with abundance patterns, as were annual sea-level anomalies obtained from an analysis of AVISO satellite information. A comparison of our findings with several other recent studies of biological communities occurring in the California Current revealed a consistent structuring of forage assemblages, which we conjecture is primarily attributable to large-scale advection patterns in the California Current ecosystem.

Estudio descriptivo del uso de drogas en adolescentes de educación media superior de la ciudad de Monterrey, Nueva León, México Estudo descritivo do uso de drogas em adolescentes de educação média supeiror da cidade de monterrey, Nova Leon, México Descriptive study of drugs use among adolescents in higher middle education in Monterrey, Nueva León, Mexico

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Gregorio Martinez Rodríguez

2004-04-01

Full Text Available Se buscó establecer el perfil de consumo de drogas lícitas e ilícitas, patrones de consumo y estrategias de afrontamiento y resistencia al alcohol, tabaco y otras drogas en adolescentes de educación media superior. El estudio se sustentó en los conceptos de autores especializados en el tema considerándose las características conductuales, psicológicas y normativas de la persona. La muestra no probabilística consistió de 325 jóvenes. Los resultados indicaron que 67%, 65% y 7% de los adolescentes aceptaron haber usado alcohol, tabaco y marihuana alguna vez en su vida respectivamente y en el último mes el 33%, 38% y 3% esas mismas substancias, 65% consideran que la mayoría de sus compañeros han hecho uso; 56% tuvieron que rechazar una vez el ofrecimiento de alcohol, 64% tabaco y 51% marihuana, en el último mes con base en esos hallazgos. Se recomienda implementar un programa de prevención orientado a apoyar los recursos del adolescente para resistir las presiones para el consumo.Buscou-se estabelecer o perfil de consumo de drogas lícitas e ilícitas, padrões de consumo e estratégias de enfrentamento e resistência ao álcool, tabaco e outras drogas em adolescentes de educação média superior. O estudo fundamentou-se nos conceitos de autores especializados no tema, considerando-se as características comportamentais, psicológicas normativas da pessoa. A amostra, não probabilística, consistiu de 325 jovens. Os resultados indicaram que 67%, 65% e 7% dos adolescentes aceitaram haver usado álcool, tabaco e maconha alguma vez na vida respectivamente e no último mês, 33%, 38% e 3% essas mesmas substâncias; 65% consideram que a maioria de seus companheiros fez uso; 56% tiveram que recusar uma vez a oferta de álcool, 64% tabaco e 51% maconha, no último mês. Com base nesses achados recomenda-se a implementação de um programa de prevenção orientado a apoiar os aportes dos adolescentes para resistir à pressão para o consumo.We aimed to establish the consumption profile of licit and illicit drugs, consumption patterns and strategies for coping and resisting alcohol, tobacco and other drugs among adolescents in higher middle education. This study was based on concepts developed by specialized authors and considered the subject's behavioral, psychological and normative characteristics. The non-probabilistic sample consisted of 325 adolescents. Results indicated that 67%, 65% and 7% of the adolescents, respectively, accepted they had already used alcohol, tobacco and marihuana at some time in their life and that 33%, 38% and 3%, respectively, had used these same substances over the last month; 65% consider most of their colleagues have used these substances; 56% had to reject an offer to consume alcohol, 64% tobacco and 51% marihuana over the last month. On the basis of these findings, we recommend the implementation of a prevention program aimed at supporting the adolescent's resources to resist pressure towards consumption.

Descriptions of digeneans from Sardina pilchardus (Walbaum) (Clupeidae) off the Algerian coast of the western Mediterranean, with a complete list of its helminth parasites

Czech Academy of Sciences Publication Activity Database

Marzoug, D.; Boutiba, Z.; Gibson, D. I.; Pérez-del-Olmo, A.; Kostadinova, Aneta

2012-01-01

Roč. 81, č. 3 (2012), s. 169-186 ISSN 0165-5752 R&D Projects: GA MŠk LC522; GA ČR GAP505/10/1562 Institutional research plan: CEZ:AV0Z60220518 Keywords : Algeria * FALLAX LACEPEDE * SEA * HEMIURIDAE * ANISAKIDAE * CAUGHT * FISHES * NORTH Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine Impact factor: 1.260, year: 2012

Monitoring programme on toxic metal in bluefish (Pomatomus saltatrix), anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) from Istanbul, Turkey: levels and estimated weekly intake.

Science.gov (United States)

Özden, Özkan

2013-05-01

Toxic metal (Hg, Cd, Pb, Cu and Zn) concentrations of small-medium bluefish, anchovy and sardine in Istanbul, Turkey, were determined using inductively coupled plasma-mass spectrometry (ICP-MS) throughout 1 year. The concentrations of pollutants were found to vary according to season and species. Estimates of weekly intake levels of the metals were calculated and compared to recommended safe limits for fish consumption by humans. The levels of Cd, Pb, Cu and Zn in the fillets of all species resulted in estimates of weekly intake levels that were lower than the recommended safe limits. The concentrations of Hg of small bluefish in September, of medium bluefish in June and September, of anchovy in March, and of sardine in August and September resulted in estimates of weekly intake levels that were higher than the recommended safe limits for human consumption.

Identificación de clusters espaciales y su especialización económica en el sector de innovación

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Amado Villarreal González

2015-01-01

Full Text Available el presente estudio se centra en el contexto geográfico del sector de la innovación, mediante la exploración de la distribución de grupos de grandes empresas y establecimientos en México. Con la aplicación de técnicas de la estadística espacial local, se pretende identificar, cuantificar y localizar aglomeraciones (clusters espaciales de empresas. Después se calcula su nivel de especialización relativa en términos de la composición del empleo, para determinar las ramas industriales características de cada uno. Los resultados sugieren siete elipses de la agrupación jerárquica de primer orden, donde la mayor proporción del empleo total la ocupa la fabricación y manufactura de vehículos de motor en Ciudad Juárez, Monterrey y Guanajuato-Querétaro; el cluster espacial situado en el Distrito Federal en la manufactura farmacéutica y medicinal; en Tijuana, la fabricación de equipos de audio y video; en Jalisco los semiconducto res y manufactura de otros componentes electrónicos y en Reynosa los equipos de comunicación.

The mental well-being of Central American transmigrant men in Mexico.

Science.gov (United States)

Altman, Claire E; Gorman, Bridget K; Chávez, Sergio; Ramos, Federico; Fernández, Isaac

2018-04-01

To understand the mental health status of Central American migrant men travelling through Mexico to the U.S., we analysed the association between migration-related circumstances/stressors and psychological disorders. In-person interviews and a psychiatric assessment were conducted in 2010 and 2014 with 360 primarily Honduran transmigrant young adult males. The interviews were conducted at three Casas del Migrante (or migrant safe houses) in the migration-corridor cities of Monterrey, and Guadalupe, Nuevo Leon; and Saltillo, Coahuila. The results indicated high levels of migration-related stressors including abuse and a high prevalence of major depressive episodes (MDEs), alcohol dependency, and alcohol abuse. Nested logistic regression models were used to separately predict MDEs, alcohol dependency, and alcohol abuse, assessing their association with migration experiences and socio-demographic characteristics. Logistic regression models showed that characteristics surrounding migration (experiencing abuse, migration duration, and attempts) are predictive of depression. Alcohol dependency and abuse were both associated with marital status and having family/friends in the intended U.S. destination, while the number of migration attempts also predicted alcohol dependency. The results provide needed information on the association between transit migration through Mexico to the U.S. among unauthorised Central American men and major depressive disorder and alcohol abuse and dependency.

Índices de ruido urbano en el día sin carro en la ciudad de Medellín

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Jeiser Rendón

2010-12-01

Full Text Available Con el presente artículo se pretende descubrir, a través de mediciones de ruido ambiental y datos de flujo vehicular, el cambio del paisaje sonoro en la ciudad de Medellín durante la implementación del día sin carro del día jueves 22 de abril de 2010; para lo que se tuvo como referencia cuatro puntos significativos de la ciudad: Monterrey, Alpujarra, Avenida Ferrocarril y la calle 33. Para el proceso de adquisición de datos se realizaron mediciones, tanto en el día sin carro, como en un día con carro, teniendo como fundamento la Resolución 0627 de 2006 “Mediante la cual, se establece la norma nacional de emisión de ruido y ruido ambiental” y la ISO 1996 “Norma internacional que contiene la descripción, medición y la evaluación de ruido ambiental”. Fue importante en esta investigación constatar la incidencia de los automóviles particulares en los niveles de ruido urbano que posee la ciudad, analizando las mediciones obtenidas este día, y encontrando congruencias funcionales entre el ruido urbano y los automóviles.

Uso del recurso de contenido en el aprendizaje en línea: YouTube

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Martha Claudia Rodríguez Villalobos

2017-03-01

Full Text Available El artículo presenta los resultados de la implementación del recurso de contenido de aprendizaje en línea YouTube en un curso de estadística a nivel posgrado. El objetivo fue verificar si el uso del canal educativo de YouTube como herramienta de recurso de contenido promueve un mejor resultado en el aprendizaje de los alumnos de la maestría en Administración Empresarial del Tecnológico de Monterrey durante el trimestre abril-julio de 2016. El diseño de la metodología consistió en compartirles a los alumnos semanalmente videos relacionados con el contenido de la materia para una mayor comprensión de este. La investigación se llevó a cabo mediante la estadística descriptiva e inferencial y se dividió a los alumnos en un grupo de control y uno experimental. A partir del segundo examen parcial, el grupo al cual se le compartieron los videos del canal educativo en YouTube obtuvieron mejores calificaciones respecto de quienes no tuvieron acceso a dicha herramienta; se concluye que hay un beneficio en el aprovechamiento académico al utilizar este recurso de contenido de aprendizaje.

[Face replantation using labial artery for revascularization. Case report].

Science.gov (United States)

de la Parra-Márquez, Miguel; Mondragón-González, Sergio; López-Palazuelos, Jaime; Naal-Mendoza, Norberto; Rangel-Flores, Jesús María

2013-01-01

Restoration of the face function and cosmetic appearance after a traumatic complex wound is a challenge for the plastic surgeon. Worldwide, few cases have been reported about face replantation. To present the case of the first partial face replantation reported in the national bibliography, using the labial artery for revascularization. On June 19th 2011, a 7 years old male presented to the emergency room of the Mexican Institute of Social Security at Monterrey, Mexico, 4 hours after a partial face amputation secondary to a dog bite. The amputated segment was composed of 75% of the upper lip, 33% of the lower lip, oral commissure and 75% of the left cheek. The labial coronary artery and vein were anastomosed with 11-0 nylon sutures and the miorraphy of the orbicularis oris, the depressor anguli oris and the depressor labii inferioris with 4-0 vycril sutures. Six months after the surgery, the functional and aesthetic outcomes were excellent with reestablishment of total labial continence and total recovery of articulation of words. amputations of any facial component should be initially managed with replantation. The function and cosmetics are better than any other technique of reconstruction. The labial coronary artery is an excellent choice for revascularization up to 25% of the face (lips and cheek).

[Adiponectin levels in breast milk of overweight/obese and normal weight mothers in the metropolitan area of Monterrey, México].

Science.gov (United States)

Galindo Gómez, Abelardo; Flores Scheufler, Pamela; Quevedo Escobar, Yamile; González Magaña, Regina; Rodríguez De Ita, Julieta

Given the current epidemic of childhood obesity, it has become increasingly important to understand the risks and protective factors associated with this disease. Breastfeeding has been identified as a protective factor; however, the mechanism responsible has not been elucidated. One of the current theories analyzes the role of hormones in breast milk, with special emphasis on adiponectin. This study aims to compare adiponectin levels in breast milk of mothers with normal weight with those in breast milk of overweight/obese mothers as well as to correlate these levels with the infant's weight gain. Forty samples of breast milk were analyzed for adiponectin levels using ELISA, 20 from mothers with normal weight and 20 from overweight/obese mothers. Adiponectin levels were lower in breast milk obtained from overweight/obese mothers than in breast milk from mothers with normal weight (p Infantil de México Federico Gómez. Publicado por Masson Doyma México S.A. All rights reserved.

Traducción y validación del Cuestionario de Beneficios y Barreras del Control Prenatal en embarazadas de México Translation and Validation of the "Cuestionario de Beneficios y Barreras del Control Prenatal" in Mexican pregnant women

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Ana María Quelopana del Valle

2007-09-01

Full Text Available Objetivo: El propósito principal del presente artículo es describir el proceso de adaptación y validación del Questionnaire of Barriers, Motivators and Facilitators of Prenatal Care Utilization al Modelo de Promoción en Salud (MPS y a población Mexicana. Metodología: El cuestionario original fue inicialmente traducido al español. Se realizó una revisión minuciosa del contenido del instrumento para asegurar validez y congruencia con el MPS. Los reactivos fueron agrupados por subescalas de acuerdo al modelo. El instrumento en español "Cuestionario de Beneficios y Barreras del Control Prenatal" fue puesto a prueba con 253 mujeres embarazadas que asistían a la Consulta de Obstetricia en el Área Metropolitana de Monterrey, México. Se realizó análisis factorial exploratorio para identificar los grupos o conglomerados de variables relacionadas. Se obtuvieron los coeficientes de confiabilidad Alfa de Cronbach para cada una de las subescalas. Resultados: La subescala de beneficios reveló un solo factor con varianza explicada de 41%; Barreras reveló siete factores con varianza explicada de 68%; y Actitud hacia el embarazo reveló tres factores con varianza explicada de 58%. Todos los factores por subescala mantuvieron Valores Característicos (eigenvalues por arriba de 1.0. Conclusión: Se concluye que el Cuestionario de Beneficios y Barreras del Control Prenatal obtuvo validez de sus constructos, con base en el MPS. Las subescalas obtuvieron coeficientes de confiabilidad sobre .70 lo que es aceptable para nuevas escalas psicosociales, confirmándose que las mediciones mantienen una congruencia interna y una homogeneidad integrada de sus reactivos.Objective: The main purpose of the present article is to describe the adaptation and validation process of the questionnaire of "Barriers, Motivators and Facilitators of Prenatal Care Utilization" to the Health Promotion Model (HPM and to Mexican population. Methods: The original questionnaire

Flora cactológica y especies asociadas en el área natural protegida Sierra Corral de los Bandidos, Nuevo León, México Cactus list and asociated plants of the protected natural area Sierra Corral de Los Bandidos, Nuevo Leon, Mexico

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María del Pilar Carmona-Lara

2008-12-01

Full Text Available El área natural protegida (ANP Sierra Corral de los Bandidos ubicada en la sierra Madre Oriental, al noroeste de Monterrey, sufre el impacto de actividades antropológicas asociadas al matorral submontano (ganadería, agricultura, colecta y urbanismo, disminuyendo sus recursos naturales y amenazando sus especies endémicas, principalmente cactáceas. El propósito del estudio fue conocer la diversidad de cactáceas y especies asociadas en zonas de amortiguamiento y núcleo. Para ello se determinaron índices de riqueza y similitud utilizando un muestreo estratificado con cuadrantes a lo largo de transectos orientados por gradientes altitudinales según su zonificación. En total se registraron 112 taxa (30 cactáceas, 87 (24 cactáceas en zona de amortiguamiento y 80 (19 cactáceas en zona núcleo. Por su densidad, frecuencia y abundancia sobresalieron Echinocereus stramineus (Engelm. Engelm. ex F. Seitz, Cylindropuntia leptocaulis F. M. Knuth in Backeb et F. M. Knuth, Mammillaria melanocentra Poselg., Neolloydia conoidea (DC Britton et Rose, (Cactaceae; Erioneuron avenaceum (H. B et K. Tateoka, (Poaceae; Viguiera stenoloba S. F. Blake; Zexmenia hispida (Kunth A. Gray, (Asteraceae y Agave lechuguilla Torr, (Agavaceae. Existe diferencia significativa entre las poblaciones de cactus de las zonas del ANP, según Jacquard (13%, Sörensen (38% y Morisita (0.44. Ocho cactáceas (7 endémicas están registradas en algún estatus de la NOM-ECOL-059, 2001.The Sierra Corral de los Bandidos is a natural protected area located in the Sierra Madre Oriental mountain range northwest of Monterrey city. This preserve suffers the impact of human activities in the form of cattle ranching, agriculture, harvest of wild plants, and urbanism, diminishing its natural resources and threatening its endemic species, especially from the cactaceae family. The purpose of this study was to obtain information on the diversity of cacti and associated species in the buffer and

Profesor Luis López de Mesa. Reminiscencias

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J. Hernando Ordoñez

1998-12-01

ñas.

Su compleja erudición y profundos conocimientos le imprimieron una personalidad que llevaron a algunos a calificar como incomprensible, abstrusa. Conociéndolo como lo conocí, no puedo compartir tan equivocados conceptos. Quienes así pensaban, estaban reconociendo tácitamente su menoría cultural. (Menoría, de menor. A propósito recuerdo la conferencia que dictó el Profesor en 1946 sobre el origen y la evolución de la vida en el planeta , a la cual tuve el placer de asistir. Se refirió al origen de la vida en el mar hace millones de años y continuó su exposición sobre las diferentes etapas de su evolución, haciendo énfasis en el fenómeno de la adaptación de los primeros vertebrados a la vida terrestre.

Hizo mención especial del primer pez que intentó hacerlo, etapa que calificó como trascendental para la evolución de las especies. Citó el nombre de este pez en la clasificación, si no recuerdo mal, un Crossopterigio, y, para que se entendiera mejor, dijo que era así como una variedad de sardina. Esta aclaración desató una serie de comentarios diciendo que el Profesor López de Mesa había sostenido que el hombre desciende de la sardina. En rigor científico, pensando en la filogenia y en la evolución en millones de años, el Profesor tenía razón...

Rol y mejores practicas del equiipo lider y su impacto en la innovacion de empresas de la zona metropolitana de Monterrey

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Laura Elizabeth Avila Hernandez

2015-01-01

Full Text Available This research article elaborates on the leadership or high management teams that have taken into account the innovation challenges within their organizations and the best practices carried out by them. In that token some business innovation definitions are depicted, as well as findings by business researchers on best innovation practices conducted namely by leadership or high management teams. Lastly, the regression analysis results and conclusions are show.

La confianza en el contexto de los equipos de trabajo virtuales

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Enrique Garza Guajardo

2015-01-01

Full Text Available This empiric research has virtual work teams as the object of study with their relation with trust as dependent variable to obtain an effective work of individuals who form the team. It has, as independent variables three factors that are thought appropriate for building trust: web conferencing, timely information, and cultural diversity. It is an exploratory and descriptive work with mixed focus. There were established four descriptive hypothesis that, search the communication level, the existence of timely information and the identification of cultural diversity within virtual work teams. This work verified the existence of trust in virtual work teams, proved that the independent variables generate it, and the established hypothesis are correct. It was designed an original instrument for its application to a population of 23 students of a master degree virtual educative program in a private university of Monterrey, Nuevo León. On the instrument questions related to trust and the three appropriate factors for trust building were included. Future researches are possible; even so, this work includes theoretical and practical contributions. It contains innovation in its literature and functionality to the organizational world by helping to understand the new configurations of work done by human resources, their perfection in methods, and working habits in a global environment of geographical and temporal separation.

[Difference between perinatal mortality in multiple pregnancies obtained spontaneously versus assisted reproduction].

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del Rayo Rivas-Ortiz, Yazmín; Hernández-Herrera, Ricardo Jorge

2010-06-01

Recently assisted reproduction techniques are more common, which increases multiple pregnancies and adverse perinatal outcomes. Some authors report increased mortality in multiple pregnancies products obtained by techniques of assisted reproduction vs. conceived spontaneously, although other authors found no significant difference. To evaluate mortality rate of multiple pregnancies comparing those obtained by assisted reproduction vs. spontaneous conception. Retrospective, observational and comparative study. We included pregnant women with 3 or more products that went to the Unidad Médica de Alta Especialidad No. 23, IMSS, in Monterrey, NL (Mexico), between 2002-2008. We compared the number of complicated pregnancies and dead products obtained by a technique of assisted reproduction vs. spontaneous. 68 multiple pregnancies were included. On average, spontaneously conceived fetuses had more weeks of gestation and more birth weight than those achieved by assisted reproduction techniques (p = ns). 20.5% (14/68) of multiple pregnancies had one or more fatal events: 10/40 (25%) by assisted reproduction techniques vs. 4/28 (14%) of spontaneous multiple pregnancies (p = 0.22). 21/134 (16%) of the products conceived by assisted reproduction techniques and 6/88 (7%) of spontaneous (p assisted reproduction and 21% of the cases had one or more fatal events (11% more in pregnancies achieved by assisted reproduction techniques). 12% of the products of multiple pregnancies died (9% more in those obtained by a technique of assisted reproduction).

Trafficking of Women in Mexico and Their Health Risk: Issues and Problems

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Arun Kumar Acharya

2015-02-01

Full Text Available Trafficking in women is one of the most corrosive forms of human rights violation. It results in the gradual destruction of a woman’s personal identity and her right to live as a free human. The victim is subjected to violence, humiliation and violation of her personal integrity, which may result in life threatening diseases like HIV/AIDS, STDs or lifelong trauma, drug addiction or personality disintegration. It can also be seen as denial of the right to liberty and security of the person, and the right to freedom from torture, violence, cruelty or degrading treatment. Over the last few decades, international trafficking of women has been given more attention by researchers. However at present internal trafficking is drawing more attention and concern from researchers. The complexity of obtaining visas and strict patrolling on international borders has caused a boom of internal trafficking around the world. Thus, the current paper aims to investigate trafficking of women for sexual exploitation including the recruitment process, methods of trafficking and working conditions of the victims; as well as to explore the determinants of sexual violence and its impact on the health of trafficked women in Monterrey, Mexico. For the present study a total of 60 women were interviewed using a snowball method between 2007 and 2013.

PCR Assays for Identification of Coccidioides posadasii Based on the Nucleotide Sequence of the Antigen 2/Proline-Rich Antigen

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Bialek, Ralf; Kern, Jan; Herrmann, Tanja; Tijerina, Rolando; Ceceñas, Luis; Reischl, Udo; González, Gloria M.

2004-01-01

A conventional nested PCR and a real-time LightCycler PCR assay for detection of Coccidioides posadasii DNA were designed and tested in 120 clinical strains. These had been isolated from 114 patients within 10 years in Monterrey, Nuevo Leon, Mexico, known to be endemic for coccidioidomycosis. The gene encoding the specific antigen 2/proline-rich antigen (Ag2/PRA) was used as a target. All strains were correctly identified, whereas DNA from related members of the family Onygenaceae remained negative. Melting curve analysis by LightCycler and sequencing of the 526-bp product of the first PCR demonstrated either 100% identity to the GenBank sequence of the Silveira strain, now known to be C. posadasii (accession number AF013256), or a single silent mutation at position 1228. Length determination of two microsatellite-containing loci (GAC and 621) identified all 120 isolates as C. posadasii. Specific DNA was amplified by conventional nested PCR from three microscopically spherule-positive paraffin-embedded tissue samples, whereas 20 human tissue samples positive for other dimorphic fungi remained negative. Additionally, the safety of each step of a modified commercially available DNA extraction procedure was evaluated by using 10 strains. At least three steps of the protocol were demonstrated to sufficiently kill arthroconidia. This safe procedure is applicable to cultures and to clinical specimens. PMID:14766853

[Prevalence of hymenoptera sting allergy in veterinary medicine students from Monterey, Nuevo Leon, Mexico].

Science.gov (United States)

Arias Cruz, Alfredo; Monsiváis Toscano, Gina; Gallardo Martínez, Gabriela; González Díaz, Sandra Nora; Galindo Rodríguez, Gabriela

2007-01-01

The reported prevalence of allergic systemic reactions to hymenoptera venom occur in up to 3.3% and large local reactions occur in 17% in the general population. To investigate the prevalence of hymenoptera sting allergy in a group of veterinary medicine students from Monterrey, Nuevo Leon, Mexico. A transverse and observational study was done with 64 students of veterinary medicine. We conducted a questionnaire about the students' history of insect allergy and atopy. Skin test with allergenic extracts of bee and ant were practiced to all subjects. We performed aeroallergen skin prick test to the subjets with suspected atopy. Students age ranged from 17 to 25 years (mean 20.2) and 37 were males. Twenty students (31.3%) had clinical history of atopy and positive skin tests to aeroallergens. On the other hand, 5 students (7.8%), including 2 atopic, had suffered large local reactions, but none of them had suffered systemic reactions. Bee and ant skin tests were positive in 15.6% and 31.3% of the students respectively. There was no difference in the prevalence of hymenoptera allergy between atopic and non atopic subjects (p < 0.05). Further, the frequency of atopy in subjects with positive skin tests for bee and ant was 50%. The prevalence of large local reactions and hymenoptera sensitization found in this group was similar to that found in other epidemiologic studies.

Guess who's not coming to dinner? Evaluating online restaurant reservations for disease surveillance.

Science.gov (United States)

Nsoesie, Elaine O; Buckeridge, David L; Brownstein, John S

2014-01-22

Alternative data sources are used increasingly to augment traditional public health surveillance systems. Examples include over-the-counter medication sales and school absenteeism. We sought to determine if an increase in restaurant table availabilities was associated with an increase in disease incidence, specifically influenza-like illness (ILI). Restaurant table availability was monitored using OpenTable, an online restaurant table reservation site. A daily search was performed for restaurants with available tables for 2 at the hour and at half past the hour for 22 distinct times: between 11:00 am-3:30 pm for lunch and between 6:00-11:30 PM for dinner. In the United States, we examined table availability for restaurants in Boston, Atlanta, Baltimore, and Miami. For Mexico, we studied table availabilities in Cancun, Mexico City, Puebla, Monterrey, and Guadalajara. Time series of restaurant use was compared with Google Flu Trends and ILI at the state and national levels for the United States and Mexico using the cross-correlation function. Differences in restaurant use were observed across sampling times and regions. We also noted similarities in time series trends between data on influenza activity and restaurant use. In some settings, significant correlations greater than 70% were noted between data on restaurant use and ILI trends. This study introduces and demonstrates the potential value of restaurant use data for event surveillance.

Culturally Specific Youth Substance Abuse Resistance Skills: Applicability across the U.S.-Mexico Border.

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Marsiglia, Flavio F; Kulis, Stephen; Rodriguez, Gregorio Martinez; Becerra, David; Castillo, Jason

2009-03-01

This study tests the applicability among adolescents in Mexico of the keepin' it REAL (refuse, explain, avoid, and leave) strategies that are common and effective ways that U.S. youth resist substance use. Following a social learning, communication competence and ecological theory integrated approach, the study draws on self-reported questionnaire data from a non-probability sample of 327 adolescents attending two public high schools in Monterrey, Nuevo León. Multivariate regressions were used to test whether the respondents' use of the REAL strategies by the participants could be predicted by key demographic variables. Separate models were estimated for the frequency of use of each strategy and for different substances. Findings indicate that most adolescents in this sample utilized each of the REAL strategies as well as other strategies to respond to offers of alcohol, cigarettes, or marijuana. Mexican and U.S. youth residing close to the US border appear to use similar drug resistance strategies. Use of the strategies varied considerably by the level of exposure to offers, but only minimally by gender and age. There were no notable differences by socioeconomic status or academic performance. Implications for prevention science, social work practice and social work research are discussed in the context of the bi-national border region and the applicability and prospect for dissemination of U.S. evidence based youth substance use prevention interventions.

Black woodpecker Dryocopus martius (L., 1758 distribution, abundance, habitatuse and breeding performance in a recentlycolonized region in SW Europe

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Olano, M., Aierbe, T., Beñaran, H., Hurtado, R., Ugarte, Urruzola, A., Vázquez, J., Ansorregi, F., Galdos, A. ... [et al.

2015-01-01

localidades potenciales utilizando inventarios forestales, y cada localidad fue visitada durante el periodo enero-marzo. Las localidades ocupadas se consideraron “dominios vitales reproductivos” cuando se pudo comprobar el emparejamiento o la nidificación, o cuando se registró presencia de individuos en un mínimo de tres visitas consecutivas. Se vigiló el desarrollo de la reproducción en nidos activos durante mayo y junio. Se detectaron y cartografiaron 21 "dominios vitales reproductivos", distribuidos fundamentalmente a lo largo de las franjas oriental y meridional del área de estudio. Las determinantes ambientales relacionadas positivamente con la presencia de "dominios vitales reproductivos" fueron elevada cobertura arbolada, estructura madura, superficies de haya Fagus sylvatica, bosque mixto caducifolio y pino laricio Pinus nigra, y parcelas forestales poco fragmentadas. Las plantaciones de pino de Monterrey P. radiata y las alturas bajas del arbolado se seleccionaron negativamente. Las parcelas de alimentación preferidas incluyeron proporciones de roble americano Quercus rubra y plantaciones de pino laricio. Se detectaron trece nidos activos. Todos los nidos salvo dos fueron excavados en hayas. El éxito de cría fue elevado (92% pero la tasa de vuelo (1.8 estuvo por debajo de los promedios descritos en Europa, lo que podría indicar limitaciones intrínsecas en esta población periférica.

Energy saving based on the reduction of losses in the transmission and distribution of the power generated incrementing the transmission capacities by means of the use of direct current; Ahorro de energia basado en la reduccion de perdidas en la transmision y redistribucion de la generacion al ampliar las capacidades de transmision por medio del empleo de la transmision en corriente directa

Energy Technology Data Exchange (ETDEWEB)

Meraz Ateca, E.; Alanis Rodriguez, J.P.; Salinas Barrera, H.; Arechiga Rodriguez, L.D.; Guerrero Garza, J.J. [Comision Federal de Electricidad (CFE) (Mexico)

1995-12-31

This paper proposes the use of the technology for the transmission of direct current that provides a saving in losses in the order of 50% in transmitting the same power as the line energized with A.C., as well as having a larger transmission capacity, since the limiting factor in operating with D.C. is given by its thermal capacity. The cost of the terminal stations is high in comparison with that of A.C., therefore it should be compensated with the benefits of the D.C. transmission. The project proposal is as a first option, to utilize the 400 KV power lines of Carbon II-Lampazos-Escobedo as a single line in Direct Current, reducing by this means about 12% of the existing losses and increasing the existing transmission capacity from the coal power stations of Rio Escondido and Carbon II. For 1995 it will be Also available 2600 MW of generating capacity and practically four circuits of 400 KV to transmit power to the Monterrey Metropolitan Area, reaching this site approximately 1500 MW. It is proposed to transmit 750 MW through the D.C. line in bi-polar way. The investment will consist only in the two conversion stations, that for a power capacity of 750 MW will be in the order of 103 millions of dollars. This cost includes the switching equipment for A.C., filters for harmonics, banks of VARS to compensate for a unit power factor, transformers, converters, ground electrodes, communications, buildings, land site preparation, project management costs and the preliminary and engineering studies costs. These costs can be reduced in accordance with the detail studies, for instance: there is enough capacity in Vars in the generating units, the transmission is always one-way, the utilization of diodes instead of thyristors. For the established conditions, there is a reduction of 10 MW, a 23.82 million dollars saving, and besides a larger Also available transmission capacity in the order of 500 MW, additionally, when operating with direct current, equipment from the

Energy saving based on the reduction of losses in the transmission and distribution of the power generated incrementing the transmission capacities by means of the use of direct current; Ahorro de energia basado en la reduccion de perdidas en la transmision y redistribucion de la generacion al ampliar las capacidades de transmision por medio del empleo de la transmision en corriente directa

Energy Technology Data Exchange (ETDEWEB)

Meraz Ateca, E; Alanis Rodriguez, J P; Salinas Barrera, H; Arechiga Rodriguez, L D; Guerrero Garza, J J [Comision Federal de Electricidad (CFE) (Mexico)

1996-12-31

This paper proposes the use of the technology for the transmission of direct current that provides a saving in losses in the order of 50% in transmitting the same power as the line energized with A.C., as well as having a larger transmission capacity, since the limiting factor in operating with D.C. is given by its thermal capacity. The cost of the terminal stations is high in comparison with that of A.C., therefore it should be compensated with the benefits of the D.C. transmission. The project proposal is as a first option, to utilize the 400 KV power lines of Carbon II-Lampazos-Escobedo as a single line in Direct Current, reducing by this means about 12% of the existing losses and increasing the existing transmission capacity from the coal power stations of Rio Escondido and Carbon II. For 1995 it will be Also available 2600 MW of generating capacity and practically four circuits of 400 KV to transmit power to the Monterrey Metropolitan Area, reaching this site approximately 1500 MW. It is proposed to transmit 750 MW through the D.C. line in bi-polar way. The investment will consist only in the two conversion stations, that for a power capacity of 750 MW will be in the order of 103 millions of dollars. This cost includes the switching equipment for A.C., filters for harmonics, banks of VARS to compensate for a unit power factor, transformers, converters, ground electrodes, communications, buildings, land site preparation, project management costs and the preliminary and engineering studies costs. These costs can be reduced in accordance with the detail studies, for instance: there is enough capacity in Vars in the generating units, the transmission is always one-way, the utilization of diodes instead of thyristors. For the established conditions, there is a reduction of 10 MW, a 23.82 million dollars saving, and besides a larger Also available transmission capacity in the order of 500 MW, additionally, when operating with direct current, equipment from the

RÉGIMEN ALIMENTARIO DE SIETE ESPECIES ÍCTICAS EN EL EMBALSE DE LA HIDROELÉCTRICA URRÁ (CÓRDOBA, COLOMBIA

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V.J. Atencio-García

2005-12-01

Full Text Available El objeto del estudio fue evaluar el régimen alimentario de siete especies de peces que se han establecidoen el embalse de la Hidroeléctrica Urrá (HU. Se analizaron 453 estómagos, distribuidos así: 115 deperico (Tracheolypterus badeli cf, 111 de cacucho (Panaque gibbosus, 108 de yalúa (Cyphocharaxmagdalenae, 89 de mojarra amarilla (Caquetaia kraussii , 11 de moncholo (Hoplias malabaricus, 10 debarbul ( Pimelodus clarias y 9 de doncella ( Ageneoisus pardales . Los contenidos estomacales se evaluaronmediante frecuencia de ocurrencia (FO, frecuencia numérica (FN y el método gravimétrico (G. Sedeterminó la importancia de cada presa mediante el índice de categorización de presa (ICP y lasuperposición de dietas se analizó mediante el Índice de Morosita (IM. La distribución porcentual de loscontenidos estomacales de la yalúa mostró que el 95.5% correspondió al ítem detritus y el restante 4.5%a microlagas (Clorofitas y Bacillariofitas y protozoarios/rotíferos. La dieta del cacucho la conformaron enun 70.9% microalgas (Cianofitas, Clorofitas y Bacilariofitas y protozoarios/rotíferos y el restante 29.1%correspondieron al ítem detritus. Barbul (FO = 50%, FN = 46.2% y perico se alimentaron principalmentede insectos (FO = 73.9%, FN = 86.4%. La mojarra amarilla (FO = 87.1%, FN = 83.3%, doncella(FO = 92.3%, FN = 92.0% y moncholo (FO = 90.9%, FN = 90.9% prefieren peces como cachanita(Roeboides dayi y sardinas ( Astianax sp. Los resultados sugieren que yalúa es detritívoro iliófago, cacuchoes detritívoro, perico y barbul son carnívoros insectívoros y doncella, moncholo y mojarra amarilla soncarnívoros piscívoros.

Mercury in Forage Fish from Mexico and Central America: Implications for Fish-Eating Birds.

Science.gov (United States)

Elliott, John E; Kirk, David A; Elliott, Kyle H; Dorzinsky, Jessica; Lee, Sandi; Inzunza, Ernesto Ruelas; Cheng, Kimberly M T; Scheuhammer, Tony; Shaw, Patrick

2015-11-01

Mercury (Hg) is a global contaminant of aquatic food chains. Aquatic birds, such as the osprey (Pandion haliaetus), with migratory populations breeding in Canada and the northern United States and wintering in the Central and South America, can be exposed to mercury on both the breeding and wintering ranges. We examined Hg levels in 14 fish taxa from 24 osprey wintering sites identified from satellite telemetry. Our main goal was to determine whether fish species that feature in the diet of overwintering and resident fish-eating birds reached toxicity thresholds for Hg. Mean Hg levels in fish whole carcasses ranged from a high of 0.18 µg g(-1) (wet weight) in Scomberomorus sierra to a low of 0.009 µg g(-1) in Catostomidae. Average Hg levels were within published toxicity threshold values in forage fish for only two sites in Mexico (Puerto Vallarta and San Blas Estuary), and all were marine species, such as mackerel (Scomberomorus sierra), sea catfish (Ariopus spp.), and sardinas species (Centropomus spp.). Except for one sample from Nicaragua, sea catfish from Puerto Morazan, none of the fish from sites in Central America had Hg levels which exceeded the thresholds. Nonmetric multidimensional scaling revealed geographical differences in Hg levels with significant pairwise differences between sites along the Pacific Ocean (Mexico) versus the Bay of Campeche, partly due to differences in species composition of sampled fish (and species distributions). Hg increased with trophic level, as assessed by nitrogen stable isotope ratios (δ(15)N but not δ(13)C), in freshwater and marine, but not estuarine, environments. Hg concentrations in forage fish do not account for the elevated Hg reported for many osprey populations on the breeding grounds, thus primary sources of contamination appear to be in the north.

Variation and temporal patterns in the composition of the surface ichthyoplankton in the southern Bay of Biscay (W. Atlantic)

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d'Elbée, Jean; Castège, Iker; Hémery, Georges; Lalanne, Yann; Mouchès, Claude; Pautrizel, Françoise; D'Amico, Frank

2009-05-01

From September 2000 to December 2006, surface plankton samples were collected on a monthly basis, from a station located in the southern Bay of Biscay (43°37N; 1°43W France), near the deep Capbreton canyon. In this paper, the results for the ichthyoplankton assemblage are presented. Among the 62 taxa recorded, only 35 were present in the larval stage whilst only 10 were represented by their eggs. Taxa represented by both stages (eggs+larvae; N=17) had the highest abundance. The presence in the surface plankton assemblage of species, at either or both stage, is interpreted within the context of the bathymetric distribution of species. The maxima in abundance and diversity occurred in February-March, for eggs, and May-June, for larvae. This 3-month time-lag between the stages is proposed to be related to the timing of egg spawning and larval recruitment to the pelagic environment. Mean egg abundances (82.4±29.8 eggs/10 m 2) were 10-fold higher than the larval abundances (7.1±1.8 larvae/10 m 2). Despite pronounced monthly variability, no statistically significant decrease in either egg or larvae abundance was observed during this 6-year study period. Compared with previous published studies, this study shows that the peak in ichthyoplankton diversity occurred two months earlier. In addition, the spawning period occurred over the whole year, even during autumn and winter. Using ordination techniques, the annual sequence appearance of taxa are described at the study site: Gadiforms, Ammodytidae and Pleuronectiforms were present during the winter whilst Sparidae, Blennidae, Labridae and Gobiidae, formed the summer group. Only three species, European anchovy Engraulis encrasicolus, European pilchard Sardina pilchardus and Atlantic horse mackerel Trachurus trachurus were recorded throughout the year.

The Radiological Condition of 137 Cs in the Northern Adriatic Sea (2006-2007)

International Nuclear Information System (INIS)

Pavicic-Hamer, D.; Lulic, S.

2008-01-01

Over the past 30 years, the Croatian Rudjer Boskovic Institute, Center for Marine Research Rovinj has studied the levels and distribution of long-lived radionuclides in different marine samples. Artificial radioactivity in the northern Adriatic Sea was assessed by analysis of the concentration of 137Cs in seawater, sediment and marine organisms. A comparison of radioactive contamination was made between different ecosystems including in front of the river Po delta, the protected area of Lim bay and the Rovinj coastal area from 2006 to 2007. At the station which was under the direct influence of the Po river discharge the concentrations of 137Cs in seawater were back to pre-Chernobyl values (2.65 Bq m-3), although in sediment values were slightly higher (9.06 Bq/kg). Inside Lim bay the concentrations of 137Cs in seawater were low (1.99 Bq m -3 ) and in mussel Mytilus galloprovincialis were undetectable in this period. The concentrations of 137Cs in seawater in the surface layer in the Rovinj coastal area remained constant (2.43 Bq m-3), as were found within the top sediment layer (2.15 Bq/kg). The concentrations of 137Cs were detectable at very low levels in Mugil cephalus and Sardina pilchardus. Fucus virsoides and Mullus barbatus can be considered a good bio indicator of monitoring radio contamination in the Adriatic Sea. The radiological status of 137Cs in the Adriatic Sea has returned to the pre-accident level, taking into consideration their natural fluctuations due to physico-chemical and hydrological parameters in the investigated area. Such knowledge of radioactive contamination could be useful in the estimation of the state of the environment and as an input to plans for the protection of the Adriatic Sea.(author)

Fine-scale tracking and diet information of a marine predator reveals the origin and contrasting spatial distribution of prey

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Alonso, Hany; Granadeiro, José P.; Dias, Maria P.; Catry, Teresa; Catry, Paulo

2018-03-01

The distribution of many marine organisms is still poorly understood, particularly in oceanic regions. Seabirds, as aerial predators which cover extensive areas across the oceans, can potentially be used to enhance our knowledge on the distribution and abundance of their prey. In this study, we combined tracking data and dietary data from individual Cory's shearwaters Calonectris borealis (n = 68) breeding in Selvagens archipelago, Madeira, Portugal, during the chick-rearing periods of 2011 and 2016, in order to infer prey origin within shearwaters' main foraging areas. The digestion state of each prey item in the diet was assessed and classified; and compared to digestion states from known prey items fed to captive birds. In a novel approach, we combined tracking data with information on the prey digestion duration and data on the transit times from foraging grounds to the colony to estimate the location of prey capture. We found a consistent heterogeneity in prey distribution across four different marine domains: Selvagens, deep-sea, seamounts, and continental shelf. In oceanic areas, the chub mackerel Scomber colias, the main prey of Cory's shearwaters, was strongly associated with seamounts and insular shelves, whereas oceanic species like pilot-fish, flying-squid, flying-fish were clearly associated with deep-sea waters. Sardines Sardina pilchardus, anchovies Engraulis encrasicolus and other coastal species were associated with the African shelf. Prey origin assignment was robust across three different sets of assumptions, and was also supported by information on the digestion state of prey collected over a large independent sampling period (671 samples, collected in 2008-2010). The integration of fine-scale dietary and foraging trip data from marine predators provides a new framework to gain insights into the distribution and abundance of prey species in poorly known oceanic areas.

Energy density of zooplankton and fish larvae in the southern Catalan Sea (NW Mediterranean)

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Barroeta, Ziortza; Olivar, M. Pilar; Palomera, Isabel

2017-06-01

In marine communities, energy of small planktonic organisms is transferred to their predators through feeding. The energy accumulated as organic substances by the different plankton organisms (Energetic Density content, ED) has been analysed in high latitudes and tropical areas, but not in the Mediterranean Sea. In this study, we approach this type of investigation for Mediterranean plankton through measures of total calorimetric content using an oxygen bomb calorimeter. We examined the spatiotemporal variation in the ED of microplankton (50-200 μm) and mesozooplankton (200-2000 μm), and two plankton-consumers, sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus) larvae. The study was carried out during the winter and summer of 2013 off the Ebro River Delta (NW Mediterranean Sea). Both plankton fractions showed a more coastal distribution and higher biomasses during winter, the period of sardine larvae occurrences, in front of a wider cross-shelf distribution and lower biomasses in summer, when anchovy appeared. ED values increased with the size of each plankton component, i.e., microzooplankton < mesozooplankton < fish larvae. A tendency for higher plankton ED in the winter period was observed, although being only significant for coastal zone, associated to the more productive waters there. Sardine and anchovy larvae showed an increasing trend in the amount of energy during development, with significantly lower ED between early larvae (6-10 mm standard length) and late postflexion stages (16-20 mm standard length). Small larvae of both species departed from a similarly low ED content, but in the next two size classes sardine larvae showed higher ED values than anchovy, being significantly higher in the 16-20 mm size class. Information on larval feeding patterns and larval growth rates for each species were used to discuss differences in energy allocation strategies.

Characteristic ichthyoplankton taxa in the separation zone of the East Australian Current: Larval assemblages as tracers of coastal mixing

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Syahailatua, Augy; Roughan, Moninya; Suthers, Iain M.

2011-03-01

Ichthyoplankton assemblages were compared between regions dominated by the oligotrophic East Australian Current (EAC) and the inner-shelf waters off southeastern Australia, to determine if the early life history of fish was related to the separation of the EAC from the coast, producing different water masses as well as characteristic taxa. Samples were collected at the surface and in sub-surface waters, at 50 and 100 m isobath stations, during two summer research voyages in November 1998 and January 1999. On both voyages the study region was characterized by coastal and EAC waters in the north (˜31°S), and in the south by topographically induced upwelling (˜31°S), associated with narrowing of the continental shelf and separation of the EAC from the coast. Among the 111 families of larval fish, we observed distinctive assemblages of ichthyoplankton associated with the two different water masses. A greater abundance of the Carangidae, Labridae, Lutjanidae, Microcanthidae, Myctophidae and Scombridae was associated with the nutrient poor EAC water mass, while the Callionymidae, Clupeidae, Platycephalidae and Sillaginidae were mostly found in the cooler and/or fresher inner-shelf water mass. We assessed these patterns with opportunistic samples from an unusual, wind-driven upwelling event in the north (˜31°S) earlier in the November voyage. The relative abundance of these 10 characteristic families distinguished this wind-driven upwelling event from the subsequent relaxation and predominance of the EAC assemblage at this location just 6 d later. Distinctive and abundant families such as larval clupeids, relative to larval carangids, could be a useful marker of inner-shelf, EAC and mixed water masses in the absence of robust hydrographic data. This and related studies indicate contrast in early life histories of Sardinops sagax and Trachurus spp., which appear to spawn respectively in the inner-shelf and outer-shelf waters. The post-flexion stages of S. sagax

Immunological cross-reactivity between four distant parvalbumins-Impact on allergen detection and diagnostics.

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Sharp, Michael F; Stephen, Juan N; Kraft, Lukas; Weiss, Thomas; Kamath, Sandip D; Lopata, Andreas L

2015-02-01

Fish are the largest and most diverse group of vertebrates. Fish are also a part of the eight food groups that cause the majority of IgE mediated food reactions. Detection tools for fish allergens are however limited due to the great diversity of fish species, despite fish allergy and its major allergen parvalbumin being well documented. The most commonly studied fish are frequently consumed in North America and Europe. However, much less is known about fish allergens in the Australasian region although fish is widely consumed in this region. A comprehensive phylogenetic analysis was performed of known parvalbumin amino acid sequences to determine possible candidate antigens for new cross-reactive antibodies to be used to detect most fish parvalbumins. Polyclonal rabbit antibodies were raised against parvalbumins from frequently consumed barramundi (Lates calcarifer), basa (Pangasius bocourti), pilchard (Sardinops sagax) and Atlantic salmon (Salmo salar). These were evaluated for cross-reactivity against a panel of 45 fish extracts (raw, heated and canned fish). Anti-barramundi parvalbumin proved to be the most cross-reactive antibody, detecting 87.5% of the 40 species analyzed, followed by anti-pilchard and anti-basa antibody. In contrast the anti-salmon antibody was very specific and only reacted to salmonidae and a few other fish. All analyzed fish species, except mahi mahi, swordfish, yellowfin tuna and all 5 canned fish had parvalbumin detected in raw extracts. However antibody reactivity to many fish was heat liable or susceptible to denaturation, demonstrating that some parvalbumins have most likely conformational epitopes, which lose antibody reactivity after heat treatment. We have demonstrated the generation of highly cross-reactive anti-parvalbumin antibodies that could be used for the detection of allergenic fish parvalbumin in contaminated food products. This cross-reactivity study thus shows processing of fish, especially canning, can have on impact

Trastornos por consumo de alcohol (AUDIT en adolescentes y jovenes marginales de bandas juveniles de Mexico Transtornos por consumo de álcool (AUDIT em adolescentes e jovens marginais de bandos juvenis do México Alcohol consumption disorder (AUDIT for marginal adolescents and youth from juvenile gangs of Mexico

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Francisco Rafael Guzmán Facundo

2007-12-01

Full Text Available Adolescentes y jóvenes que pertenecen a bandas juveniles con frecuencia son omitidos de las encuestas nacionales sobre consumo de alcohol y drogas. El objetivo del estudio fue conocer los trastornos por consumo de alcohol, y analizar el efecto de factores personales sobre estos, en 125 adolescentes y jóvenes margínales de bandas juveniles de Monterrey, NL. México. Los resultados indicaron que 70% mostró consumo excesivo, 62% se clasificó con consumo perjudicial y el 50% con dependencia. Los factores que más contribuyeron en la predicción del consumo excesivo fueron la edad, sexo y el bajo nivel educativo, para el consumo perjudicial fueron la edad y problemas de salud mental, y para el consumo dependiente fueron la edad, los años de escolaridad y los problemas de salud mental. Estos resultados posibilitarán la reflexión de la necesidad de diseñar programas adecuados dirigidos a la prevención en este grupo de jóvenes marginales.Adolescentes e jovens que pertencem a bandos juvenis com freqüência são omitidos dos estudos nacionais sobre consumo de álcool e drogas. O objetivo da presente pesquisa foi conhecer os transtornos por consumo de álcool e analisar o efeito de fatores pessoais sobre estes, em 125 adolescentes e jovens marginais de bandos juvenis do México. Os resultados mostraram que 70% têm consumo excessivo, 62% se classificou em um consumo prejudicial, e o 50% com dependência. Os fatores que maior contribuíram na predição do consumo excessivo foram a idade, sexo e o baixo nível educacional, para o consumo prejudicial foram a idade e os problemas de saúde mental, e para o consumo dependente foram a idade, os anos de escolaridade e os problemas de saúde mental. Estes resultados possibilitaram a reflexão da necessidade de elaboração de programas adequados direcionados à prevenção neste grupo de jovens.Adolescents and youngers who are involved in gangs, are frequently excluded from the national surveys about

Frecuencia de diagnósticos histopatológicos en un periodo de 20 años (1989-2008 Histopathological diagnosis frequency during 20 years (1989-2008

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Elías Romero de León

2010-03-01

Full Text Available Presentar datos sobre el diagnóstico histopatológico que se realizó en el Departamento de Patología Oral de la Facultad de Odontología de la Universidad Autónoma de Nuevo León, Monterrey, México, durante el periodo 1989 a 2008. De 2 183 biopsias, las lesiones de tejido óseo comprendieron 637 casos (29,2 % y las de tejido blando sumaron 1 529 (70,0 %, de tejido dental se procesaron 17 muestras (0,8 %. Los diagnósticos más frecuentes para tejido óseo fueron: granuloma periapical, quiste periapical, quiste dentígero y queratoquiste odontogénico (tumor odontogénico queratoquístico. Los diagnósticos más frecuentes de tejido blando fueron: fibroma, granuloma piógeno, mucocele, carcinoma epidermoide y papiloma. En el maxilar se presentaron 292 casos, en la mandíbula 258 y en 87 muestras no se especificó el maxilar de donde se obtuvo la biopsia. En el tejido blando, de encía se obtuvieron 505 biopsias; labio inferior 164, tejido blando sin especificar 157, lengua 147, mucosa alveolar 146, paladar duro 89 y otras áreas presentaron 321 muestras. De pacientes femeninos fueron 1 370 muestras (62,8 % y los masculinos con 796 biopsias (36,4 %. Hubo coincidencia entre el diagnóstico clínico con el histopatológico de 1 482 casos (67,9 %, los casos no coincidentes fueron 172 (7,9 % y 529 casos (24,2 % donde no se proporcionó diagnóstico clínico, lo cual es aceptable de acuerdo a estudios similares, pero puede ser mejorado substancialmente a través de educación continua.To submit data on the histopathological diagnosis made in the Oral Pathology Department of Stomatology of Autonomous University in Nuevo León, Monterrey, Mexico during from 1989 to 2008. From 2 183 biopsies, bone tissue lesions accounted for 637 cases (29.2 % and those that soft tissue summarized 1 529 (70 %, from dental tissue 17 samples (0.8 % were processed. For bone tissue the more frequent diagnoses were: periapical granulomas, periapical cyst, dentigerous cyst

ESCUELAS E INTERPRETACIONES DEL PENSAMIENTO ADMINISTRATIVO

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Francisco Velásquez Vásquez

2002-01-01

Full Text Available El artículo siguiente presenta el proceso evolutivo que ha tenido el pensamiento administrativo a lo largo del siglo XX. Se distinguen tres etapas y en cada etapa se identifica una escuela de pensamiento. Esas escuelas son: la escuela Clásica, que tuvo su desarrollo durante el período comprendido entre 1900-1930, en el mundo occidental y en los contextos culturales de los Estados Unidos, Francia y Alemania. La escuela de las Relaciones Humanas y del Comportamiento, que surge entre los años de 1930-1960 y finalmente la escuela Holística que aparece a partir de 1960. Las dos últimas escuelas se han desarrollado con mayor énfasis en el contexto norteamericano. Frente a cada escuela se describen los enfoques teóricos de los autores más representativos y se señala la caracterización de su paradigma. Adicionalmente, se presentan ESCUELAS E INTERPRETACIONES DEL PENSAMIENTO ADMINISTRATIVO FRANCISCO VELÁSQUEZ VÁSQUEZ Director del Programa de Administración de Empresas Diurno en la Universidad Icesi. Ingeniero Electricista de la Universidad del Valle. Magíster en Administración de Empresas del Instituto Tecnológico de Estudios Superiores de Monterrey. fvelasq@icesi.edu.co los cambios que posibilitaron el surgimiento de las escuelas y el artículo finaliza con un análisis metafórico como instrumento interpretativo para las distintas escuelas de pensamiento.

[Hospital maternal mortality: causes and consistency between clinical and autopsy diagnosis at the Northeastern Medical Center of the IMSS, Mexico].

Science.gov (United States)

Calderón-Garcidueñas, Ana Laura; Martínez-Salazar, Griselda; Fernández-Díaz, Héctor; Cerda-Flores, Ricardo M

2002-02-01

The aim was to study the causes of maternal mortality (MM) and the percent of concordance between the clinical diagnosis and the autopsy findings. The autopsies of maternal death (1980-1999) from the Hospital de Especialidades, Centro Médico del Noreste, IMSS in Monterrey, México, were analyzed. The cases were classified in directly obstetric maternal mortality (DOM) and indirectly obstetric maternal mortality (IOM), the causes were studied and the percent of concordance between pre- and post-mortem diagnosis was determined. There were 124 deaths. Autopsy was performed in 61 (49.1%) women. In 55 cases the clinical file and the autopsy protocol were available. This was our sample for study. Sixty percent of the cases were DO. Causes of DOM were: specific hypertensive pregnancy disease (SHPD) (51.6%), sepsis (35.5%), hypovolemic shock (9.7%), anesthetic accidents (3%); causes of IOM were: sepsis (41.7%), malignancies (16.7%), hematological diseases (12.5%), cardiopathy and systemic arterial hypertension (12.5%), hepatic disorders (12.5%), and Superior Longitudinal Sinus thrombosis (4%). A 100% clinical-pathological concordance was observed in DOM cases, while only a 41.6% was found in IOM cases. In those cases of sepsis (IOM), the etiologic agents were identified only in 20% before death. The early detection and treatment of SHPD and the prevention of sepsis should decrease the MM. This study showed some weakness in the Health Services that should be improved.

Estrategia de comunicación integral de mercadotecnia para una ONG con enfoque educativo.

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Diana Davila Ruiz

2014-01-01

Full Text Available Alianza Para La Educación México A.C is a non-governmental, non-profit organization founded in 2008 and established in Monterrey, Nuevo Leon, México. Its mission is to be an agent of change in society working with individuals and institutions, providing resources and tools for students living in adverse economic conditions, so they can have access to college and postgraduate education. The need to attract more donations is imperative considering that each year new students are integrated into the program and the costs are becoming more difficult to cover. This research aims to develop an integrated marketing communication strategy with the purpose of helping the organization to raise funds. The research methodology consisted of several deep interviews to different audiences related to the work of the organization, the audiences were: private foundations, individuals as donors, corporate social responsibility offices from well-known companies, and college students awarded with scholarships. The main recommendations for the organization derived from this research are: to have an active board of directors, the development and implementation of a website where donors can monitor the performance of the organization through general reports, to implement a public relations program that will allow to expand the efforts through strategic alliances, and to raise awareness among the students about the importance of giving back to Alianza para la Educación México A.C.

CÓMO MEJORAR LA EFICIENCIA OPERATIVA UTILIZANDO EL TRABAJO EN EQUIPO

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Carlos Alberto Franco

2000-01-01

Full Text Available En este artículo se presenta un modelo para aumentar la eficiencia operativa de diversas organizaciones de la economía con el fin de mejorar sus resultados financieros y por consiguiente su competitividad. Este modelo permite aprovechar los talentos de las personas que laboran en la empresa, organizándolos en equipos o grupos para que puedan identificar y aprovechar oportunidades de mejoramiento que conduzcan a un aumento significativo de la eficiencia productiva. La metodología que aquí se expone es particularmente útil para las empresas medianas y pequeñas que regularmente no cuentan con recursos ni infraestructura suficiente para introducir los cambios que CÓMO MEJORAR LA EFICIENCIA OPERATIVA UTILIZANDO EL TRABAJO EN EQUIPO CARLOS ALBERTO FRANCO Director MBA de la Universidad Icesi en convenio con la Universidad de Tulane. Ingeniero Eléctrico de la Universidad del Valle. Máster en Ingeniería de Carnegie Mellon University, Pisttsburg. Ph.D. en Ingeniería Eléctrica de USC (U.S.A. FRANCISCO VELÁSQUEZ V. Director del Programa de Administración de Empresas Plan Diurno. Ingeniero Electricista de la Universidad del Valle. Magister en Administración del Instituto de Estudios Superiores de Monterrey, Campus ciudad de México. mejoren su productividad. El modelo se puede aplicar directamente por los jefes o supervisores de cada una de las áreas de la empresa, sin necesidad de recurrir a asesorías costosas.

C allele of the rs2209972 single nucleotide polymorphism of the insulin degrading enzyme gene and Alzheimer's disease in type 2 diabetes, a case control study.

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Gutiérrez-Hermosillo, Hugo; Díaz De León-González, Enrique; Palacios-Corona, Rebeca; Cedillo-Rodríguez, Javier Armando; Camacho-Luis, Abelardo; Reyes-Romero, Miguel Arturo; Medina-Chávez, Juan Humberto; Blandón, Pedro A

2015-02-20

In the last few decades we have witnessed an interesting transformation of the population pyramids throughout the world. As the population's life expectancy increases, there are more chronic diseases such as diabetes mellitus and dementias, and both of them have shown an association. To determine the association between Alzheimer's disease in diabetic patients and the insulin degrading enzyme in outpatients of a second level Hospital in Monterrey, Mexico. This was a case control study in which we included outpatients from the Geriatrics Clinic of a Hospital in Northeastern Mexico. Cases were patients with a Mini Mental Score Exam (MMSE) below 24 and DSM-IV criteria for Dementia. Controls were patients who had MMSE scores greater than 24. Data from 97 patients were analyzed. Regarding physical examination and the results of laboratory tests, there were no differences between the two groups (p>0.05). A 98% prevalence of the insulin degrading enzyme was documented in the sample studied. We found an association between a homozygous status for the CC genotype and Dementia with an estimated Odds Ratio (OR) of 2.5 (CI 95% 1.6-3.3) on the bivariate test, while, on the multivariate analysis, the OR was estimated 3.3 (CI 95% 1.3-8.2). Evidence shows that cognitive impairment is more frequent among those exposed to the C allele of the rs2209972 SNP of the insulin degrading enzyme gene. Copyright © 2013 Elsevier España, S.L.U. All rights reserved.

Índice de satisfacción de los trabajadores respecto a su actividad desempeñada en una dirección de deportes municipal

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Rosa Elena Medina Rodríguez

2009-06-01

Full Text Available El propósito de este estudio es identificar aquellos factores que desde la perspectiva de los trabajadores son significativos para determinar su satisfacción con respecto al trabajo que desempeñan en la Dirección de Deportes del Municipio de Monterrey (DDMM. El estudio se realizó en una muestra de 175 trabajadores de un total de 322, con un error del 5% y un Intervalo de Confianza del 95%. El instrumento utilizado, es un cuestionario que consta de una introducción y 6 dimensiones. Los resultados más importantes muestran que no es bien valorada: la cantidad, adecuación y facilidad de disponer de espacio para trabajar, los recursos materiales y la seguridad e higiene, así como el reconocimiento al desempeño de su trabajo y las posibilidades de formación; mientras que lo que mejor valoraron fueron: el estar comprometidos con los objetivos generales de la organización, buena disposición de ésta para adaptarse y atender sus necesidades e intereses, así como el disfrutar de un buen ambiente laboral, lo que se traduce a una buena satisfacción global. Al comparar las dimensiones de satisfacción para los trabajadores, por grupos de edad y área laboral no se encontraron diferencias significativas, tan solo se dieron por género otorgando las puntuaciones más altas los hombres respecto a las mujeres

[Medical and surgical health care for congenital heart disease: a panoramic vision of the reality in Mexico. Inquiry 2009].

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Calderón-Colmenero, Juan; De-la-Llata, Manuel; Vizcaíno, Alfredo; Ramírez, Samuel; Bolio, Alejandro

2011-01-01

The only way to characterize the Mexican problem related to congenital heart disease care is promoting the creation of a national database for registering the organization, resources, and related activities. The Health Secretary of Mexico adopted a Spanish registration model to design a survey for obtaining a national Mexican reference in congenital heart disease. This survey was distributed to all directors of medical and/or surgical health care centers for congenital heart disease in Mexico. This communication presents the results obtained in relation to organization, resources and activities performed during the last year 2009. From the 22 health care centers which answered the survey 10 were reference centers (45%) and 12 were assistant centers (55%). All of them are provided with cardiologic auxiliary diagnostic methods. Except one, all centers have at least one bidimentional echocardiography apparatus. There is a general deficit between material and human resources detected in our study. Therapeutic actions for congenital heart disease (70% surgical and 30% therapeutical interventionism) show a clear centralization tendency for this kind of health care in Mexico City, Monterrey and finally Guadalajara. Due to the participation of almost all cardiac health centers in Mexico, our study provides an important information related to organization, resources, and medical and/or surgical activities for congenital heart disease. The data presented not only show Mexican reality, but allows us to identify better the national problematic for establishing priorities and propose solution alternatives.

[The relationship among depression, anxiety, and somatic symptoms in a sample of university students in northern Mexico].

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González Ramírez, Mónica Teresa; Landero Hernández, René; García-Campayo, Javier

2009-02-01

To determine how anxiety, depression, and somatic symptoms are related in a sample of university students in northern Mexico. An exploratory study was conducted through self-administered questionnaires applied to a convenience sample of 506 psychology students at two universities in Monterrey, in the state of Nuevo León, Mexico. To evaluate somatic symptoms, the Patient Health Questionnaire was used; for depression, the Beck Depression Inventory; and for anxiety, the Social Anxiety Scale for Adolescents. Spearman's correlation was used to determine to what extent the associations among the variables were significant. The Kruskal-Wallis test was used to compare anxiety and depression levels between groups of students organized by severity of somatic symptoms. Of the participants, 129 (25.5%) presented somatic symptoms that were of medium intensity or severe; just 4 (0.8%) had severe depression; and only 2 (0.4%) students presented anxiety levels over 75% of the scale maximum. The severity of somatic symptoms increased in step with anxiety and depression levels. The somatic symptoms occurring most frequently and of greatest concern among the study sample were: headache, menstrual pain, and backache, as well as feeling tired and having difficulty sleeping. The direct association between the severity of somatic symptoms and depression and anxiety was confirmed. It is recommended that all treatment and/or prevention programs addressing one of these conditions, include the other two as well. Programs specifically aimed at university youth should be implemented.

Consumo de alimentos de alta densidad energética en los beneficiarios del programa Oportunidades. El caso del Área Metropolitana de Monterrey

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Óscar Alfonso Martínez Martínez

2012-01-01

refrescos y frituras, entre los beneficiarios y no beneficiarios de dicho programa. Se encontró que no existen diferencias estadísticamente significativas en su consumo, pero sí que las ingestas son altas para ambos grupos.

Niveles de adiponectina en leche materna de madres con sobrepeso/obesidad y con peso normal del área metropolitana de Monterrey, México

OpenAIRE

Galindo Gómez, Abelardo; Flores Scheufler, Pamela; Quevedo Escobar, Yamile; González Magaña, Regina; Rodríguez De Ita, Julieta

2015-01-01

Introducción: Con la actual epidemia de obesidad infantil se ha vuelto cada vez más importante conocer los factores de riesgo y de protección contra la misma. La alimentación con leche materna se considera un factor protector contra la obesidad infantil; sin embargo, se desconoce el mecanismo responsable de este efecto. Una de las teorías actuales analiza el papel de hormonas que contiene la leche materna, de las cuales la principal es la adiponectina. Con base en esta teoría, se compararon l...

Validación de una escala de autoeficacia para la prevención del SIDA en adolescentes Validation of a self-efficacy scale for AIDS prevention among adolescents

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Fuensanta López-Rosales

2001-10-01

Full Text Available Objetivo. Estudiar la consistencia interna, validez y estructura factorial de la escala Self-Efficacy for AIDS (SEA-27 desarrollada en población estadounidense y adaptada a población mexicana. Material y métodos. Es un estudio correlacional, con un diseño no experimental de tipo transversal. Se hizo con una muestra aleatoria simple de 964 adolescentes tomados de 58 centros de salud públicos de Monterrey, México, en febrero de 1998. Ninguno iba a consultar por motivos relacionados con el SIDA. Se emplea la Escala de Autoeficacia de 27 elementos para Prevenir el SIDA (SEA-27 de López Rosales y colaboradores, junto con preguntas cerradas tipo Likert, dicotómicas y un cuestionario integrado por dos preguntas abiertas sobre aspectos relevantes de la conducta sexual para validar la escala. Para el estudio de SEA 27 se emplearon las pruebas U de Mann Whitney, Kolmogorov-Smirnov, alpha de Cronbach, análisis factorial de componentes principales y correlación bi-serial puntual. La validez de la escala se estudia por la correlación de Pearson con las variables numéricas, con la t de Student para muestras independientes dicotómicas y ANOVA con las politómicas. Resultados. La escala se ajustó a una distribución normal (Zk-s(Normal=1.369; p=0.047, con una media de 95.14 y una desviación estándar de 25.80. Su fiabilidad, por la alpha de Cronbach, resultó de 0.89. SEA-27 muestra una estructura tetradimensional ortogonal que explica 58.47% de la varianza. Se confirmaron en buen grado las hipótesis de validez correlacional y discriminatoria. Conclusiones. La SEA-27 es una escala fiable y válida. El texto completo en inglés de este artículo está disponible en: http://www.insp.mx/salud/index.htmlObjectives. The objectives are obtain the internal consistency, validity and factorial structure of the Self-Efficacy for AIDS scale, wich was developed in American population by Kasen, Vaughan and Walter (1992 and adapted in mexican samples for L�

Urban policies. Changing trends in the area of influence of major projects / Políticas Urbanas. Tendencia de Transformación en el Área de Influencia de Grandes Proyectos

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Carlos Leal Iga

2012-09-01

Full Text Available This article analyzes the trend of transformation in the area of influence, where confined Large Urban Projects (LUP's, and the characterization of urban attributes of the area. This characterization is reviewed in the trend analysis of current land uses, as well as permits and construction licenses for the areas around the projects, real estate values and variables that were relevant in the application of analysis correlation. As a case study presents the central area of the city, where there have been several policies related to LUP's, like; the Macro Plaza Monterrey, held in 1985 and the Paseo Santa Lucia, accomplished in 2007 as well as the area's historical heritage decreed as the city in 1993, called Old Town, among others. In this central area, were evaluated urban attributes of different variables, legal dimensions of space, the dimension of urban accessibility and urban hierarchy. These projects generate large amount of urban green spaces and recreational areas in the central area when they were implemented, and the protection of the historical heritage of this area of the first frame, resulting in a dual situation between the determination of Historical Center and Center Urban (Business District of this area of the city. As land uses and their variability currently relevant factors. With trend analysis and characterization of the areas, there are possible ways you can follow the urban development of this area of the city, helping the planning process in the area. Este artículo analiza la tendencia de transformación en el área de influencia, en donde se circunscriben Grandes Proyectos Urbanos (GPU ́s, y la caracterización de los atributos urbanos de la zona. Esta caracterización se revisa en el análisis de la tendencia de los usos de suelo actual, así como en los permisos y licencias de construcción de las zonas aledañas a los proyectos, los valores inmobiliarios y las variables que fueron relevantes en la aplicación de un an

Analysis of the generation of electric energy through the use of biogas obtained from sanitary fillings in Mexico; Analisis de la generacion de energia electrica a traves de biogas procedente de rellenos sanitarios en Mexico

Energy Technology Data Exchange (ETDEWEB)

Cerda Sauvage, Tania Kalinka [Facultad de Ingenieria, Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

2004-06-15

Through this work a theoretical analysis conducted for the use of biogas obtained from sanitary landfills for the generation of electrical energy is presented, as well as the evaluation of the main elements that limit or favor the development of this technology in our country. In the introductory part of this work are presented some causes considered have favored the development of technologies as the one proposed here. In the first part it is exposed what the biogas is and what conditions are necessary for its production, which explains the production of biogas in the sanitary landfills, in addition, describes the distribution of the solid residues that give raise to the present situation of the sanitary landfills and the biogas production process in these. The work continues with a description of the electrical energy generation process through the gas originated in sanitary landfills, indicating the necessary conditions in order that the filling complies with its basic functions; following our process until obtaining the final item, electrical energy. For the description of the process and to analyze some factors that take part, it is advisable to include the main aspects of a plant located in Monterrey that occupies this technology. This project shows project shows off in a tangible form the barriers that this technology faces, as well as its main advantages and disadvantages. Are exposed the limiting factors of this technology in technological, economic, political and social aspects, the barriers that can and must overcome as well as the reasons that justify the effort to overcome them. Finally are presented the conclusions it arrives, as well as the commentaries and suggestions in respect to the subject. [Spanish] A traves de este trabajo se expone un analisis teorico efectuado al uso de biogas extraido de rellenos sanitarios para la generacion de energia electrica, asi como evaluar los principales elementos que limitan o favorecen el desarrollo de esta

Black carbon network in Mexico. First Results

Science.gov (United States)

Barrera, Valter; Peralta, Oscar; Granado, Karen; Ortinez, Abraham; Alvarez-Ospina, Harry; Espinoza, Maria de la Luz; Castro, Telma

2017-04-01

After the United Nations Framework Convention on Climate Change celebrated in Paris 2016, many countries should adopt some mechanisms in the next years to contribute to mitigate greenhouse gas emissions and support sustainable development. Mexico Government has adopted an unconditional international commitment to carry out mitigation actions that would result in the reduction of 51% in black carbon (BC) emissions by year 2030. However, many BC emissions have been calculated by factor emissions. Since optical measurements of environmental BC concentrations can vary according the different components and their subsequence wavelength measure, it's important to obtain more accurate values. BC is formally defined as an ideally light-absorbing substance composed by carbon (Bond et al., 2013), and is the second main contributor (behind Carbon Dioxide; CO2) to positive radiative forcing (Ramanathan and Carmichael, 2008). Recently, BC has been used as an additional indicator in air quality management in some cities because is emitted from the incomplete combustion of fossil fuels, biofuel and biomass burning in both anthropogenic and it is always emitted with other particles and gases, such as organic carbon (OC), nitrogen oxides (NOx), and sulfur dioxide (SO2). Black Carbon, PM2.5 and pollutant gases were measured from January 2015 to December 2015 at three main cities in Mexico, and two other places to evaluate the BC concentration levels in the country. The urban background sites (Mexico City, Monterrey, Guadalajara, MXC-UB, GDL-UB, MTY-UB), a sub-urban background site (Juriquilla, Queretaro, JUR-SUB) and a regional background site (Altzomoni, ALT-RB). Results showed the relationship between BC and PM2.5 in the 3 large cities, with BC/PM2.5 ratios near 0.14 to 0.09 and a high BC-CO relationship in all the year in Mexico City, who showed that mobile sources are a common, at least in cities with a non-significant biomass burning emission related to agriculture or coal

Riesgo nutricional en pacientes con tuberculosis pulmonar: ¿cuestión del paciente o de los servicios de salud? Nutritional risk in patients with pulmonary tuberculosis. A patient or a health services issue?

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Georgina Mayela Núñez-Rocha

2000-04-01

Full Text Available OBJETIVO: Identificar factores de riesgo nutricional en pacientes con tuberculosis pulmonar (TBP.MATERIAL Y MÉTODOS: Se seleccionaron al azar 185 pacientes con TBP atendidos en dos instituciones de salud de Monterrey, Nuevo León, México, durante 1997. Se identificaron variables antropométricas, socioeconómicas, utilización del servicio de nutrición, accesibilidad a los alimentos, efectos secundarios de drogas antifímicas, y atribución de la enfermedad a la alimentación. El plan de análisis incluyó estadística descriptiva, análisis bivariado y multivariado de regresión logística múltiple, además se estimó razón de prevalencia e intervalos de confianza de 95%. RESULTADOS: El promedio de edad fue de 42.4±19.9 años. La media de índice de masa corporal fue de 19.8±3.2 y se encontraban desnutridos 56.8% del total de los pacientes. El 26.4% de éstos fue enviado al servicio de nutrición y, únicamente, 24.3% lo utilizó. El análisis multivariado mostró como factores de riesgo para desnutrición a los efectos secundarios de las drogas antifímicas, independientemente de la edad, sexo, escolaridad, ocupación, tiempo de evolución, accesibilidad a los alimentos, atribución de la enfermedad al tipo de alimentación y utilización del servicio de nutrición (ji²=10.58; p=0.0515, r²=0.42. CONCLUSIONES: El riesgo nutricional al que se enfrenta el paciente es responsabilidad tanto de éste, por la escasa utilización que hace del servicio de nutrición, como de los servicios de salud, debido a la existencia de barreras de tipo organizacional que dificultan el acceso al servicio de nutrición. Además, la falta de accesibilidad a los alimentos y el impacto de los efectos secundarios de las drogas antifímicas justifican la necesidad de focalizar la atención en este grupo de riesgo.OBJECTIVE: To determine nutritional risk factors in a population of patients with pulmonary tuberculosis (PT. MATERIAL AND METHODS: During 1997, one

Temperature and food-mediated variability of European Atlantic sardine recruitment

Science.gov (United States)

Garrido, Susana; Silva, Alexandra; Marques, Vitor; Figueiredo, Ivone; Bryère, Philippe; Mangin, Antoine; Santos, A. Miguel P.

2017-12-01

The influence of the environmental conditions during larval development on the resulting recruitment strength was investigated for European sardine (Sardina pilchardus) at Atlanto-Iberian waters. Satellite-derived Sea Surface Temperature (SST) and Chlorophyll-a concentration (Chla) data from the previous spawning seasons (January to March/April and October to December of the previous year) were related to recruitment success data in the main recruitment hotspots. Recruitment data was taken from yearly acoustic scientific cruises and from the ICES recruitment index estimated by an age-structured model for the entire stock. A linear discriminant analysis model using SST, Chla, and the abundance of spawners during the spawning season identified years of high and low recruitment for all the recruitment hotspots with an accuracy of ≥79%. In general, high recruitment years were associated with high Chla and low SST, although the most important variables to discriminate between the groups were area-specific. High recruitment years were mostly related to high food availability (Chla), particularly during the last quarter of the previous year. In Western Iberia and in the Gulf of Cadiz, high recruitment years were also associated to lower SST, whereas in the Bay of Biscay, where SST during the winter was generally below the optimal range ≈11-12 °C for sardine larval development, higher recruitment was associated with high SST. For ICES data of the southern European sardine stock, lower SST and higher Chla during the last quarter of the previous year were associated with high recruitment years and SST alone was able to discriminate between the two recruitment groups with 73% accuracy. Although the time-series of available data are still small, these significant relationships are consistent with field and laboratory studies relating larval growth and mortality with main environmental drivers. These relationships should be further investigated in the following years to

Toxic metals in tissues of fishes from the Black Sea and associated human health risk exposure.

Science.gov (United States)

Plavan, Gabriel; Jitar, Oana; Teodosiu, Carmen; Nicoara, Mircea; Micu, Dragos; Strungaru, Stefan-Adrian

2017-03-01

The anthropogenic activities in the Black Sea area are responsible for toxic metal contamination of sea food products. In this study, several toxic metals: cadmium, lead, nickel, chromium, and copper were quantified in different tissues (digestive tract, muscle, skeleton, skin) of nine fish species (Neogobius melanostomus, Belone belone, Solea solea, Trachurus mediterraneus ponticus, Sardina pilchardus, Engraulis encrasicolus, Pomatomus saltatrix, Sprattus sprattus, Scorpaena porcus) by using atomic absorption spectrometer with a high-resolution continuum source and graphite furnace technique (HR-CS GF-AAS), and the risk of fish meat consumption by the young human population was evaluated. These metals are used in high amounts in industries located near the coastline such as shipyard construction and industrial plants. Toxic metal accumulation depends on fish feeding behavior, abiotic conditions, metal chemistry, and animal physiology. For instance, cadmium was measured in the muscle of the investigated species and average values of 0.0008-0.0338 mg kg -1 were obtained. The lowest average value of this metal was measured at benthic species N. melanostomus and the highest at the pelagic predator T. mediterraneus ponticus. Generally, the highest metal concentration was measured in the digestive tract that has the role of biofilter for these contaminants. The risk of contamination is significantly reduced by avoiding the consumption of certain fish tissues (digestive tract and skin for copper and skeleton for nickel). An estimation of the dietary metal intake to young consumers was realized for each of the studied species of fish from Romanian, Bulgarian, and Turkish waters, during the period 2001-2014 in order to evaluate the risks of chronic exposure in time due to metal toxicity. This estimation is important for the prevention of chronic exposure due to metal toxicity. Food exposure to studied metals showed a negative trend for Romania, Turkey, and Bulgaria based

Trol ve uzatma ağları ile İzmir körfezinden yakalanan dil (Solea solea balığının yaşama yüzdesi; kültür şartlarına adaptasyonu ve beslenme davranışı.

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Doç.Dr. Fatih Başaran

2008-01-01

Full Text Available Trol ve uzatma ağları ile İzmir körfezinden yakalanan dil (Solea solea balığının yaşama yüzdesi; kültür şartlarına adaptasyonu ve beslenme davranışı. Bu araştırmada, doğal ortamdan yakalanan dil balığının (Solea solea, kültür şartlarına adaptasyonu ve beslenme davranışı incelenmiştir. Dil balıkları, 2007 Mart-Nisan döneminde, İzmir Körfezi’nden trol ve uzatma ağlarıyla yakalanmıştır. 270 adet dil balığının ön adaptasyonu sırasında, ilk beş gün boyunca, karanlık ortamda antibiyotik (100 ppm fruzolidon ilavesi, 60 dak/gün uygulaması gerçekleştirilmiştir. Kültür şartlarında ilk besleme için, kalamar (Loligo vulgaris, boru kurdu (Diopatra neopolitana, kara midye (Mytilus galloprovincialis, sülünes (Solen marginatus, istiridye (Ostrea edulis, japon şapkası (Patella spp., deniz salyangozu (Monodonta turbinata ve taze sardalya (Sardina pilchardus kullanılmıştır. Dil balıkları 0-2 gün içinde beslenmeye başlamıştır ve boru kurdu, en çok tercih ettikleri tür olmuştur. Bir aylık adaptasyon dönemi sonunda, uzatma ağlarıyla yakalanan dil balıklarının yaşama oranının (%58, trol ile yakalananların yaşama oranından (%29 önemli düzeyde yüksek bulunmuştur (p

Forensic parameters and admixture in Mestizos from five geographic regions of Mexico based on 20 autosomal STRs (Powerplex 21 system).

Science.gov (United States)

Aguilar-Velázquez, J A; Martínez-Cortés, G; Inclán-Sánchez, A; Favela-Mendoza, A F; Velarde-Félix, J S; Rangel-Villalobos, H

2018-03-01

We analyzed Mestizo (admixed) population samples from different geographic regions of Mexico (n = 1283) with 20 autosomal STRs (PowerPlex® 21, Promega Corp.). Allele frequencies and forensic parameters from the Northwest, Northeast, West, Center, and Southeast regions are reported, as well as from the pooled Mexican population sample. The combined PD and PE for this 20 STR system were > 0.9999999999 and > 0.99999996593% in all five population samples, respectively. Analysis of molecular variance (AMOVA) of these Mexican population samples, plus Monterrey (Northeast) and Mexico (Center) Cities, showed low but significant differences among Mexican-Mestizos from the seven populations (Fst = 0.20%; p = 0.0000). Structure analysis showed the highest proportion of Native American ancestry in Mexico City, Center, and Southeast regions, respectively, which was in agreement with the estimated genetic distances represented in a MDS plot and a NJ tree. The best fit of population clusters (K = 4) obtained with the Structure software indicates that Mexican-Mestizos are mainly composed by European, African, and two Native American ancestries. The European and Native American ancestries displayed a contrary gradient, increasing toward the North-West and South-Southeast, respectively. These 20 autosomal STR loci improved the admixture estimation regarding previous studies with the 13 CODIS-STRs, as supported by the higher similarity with previous estimates based on genome-wide SNP. In brief, this study validates the confident use of the PowerPlex® 21 system for human identification purposes in Mestizo populations throughout the Mexican territory.

Validación cruzada del Perfil de Impacto de Salud Oral aplicado a enfermedad periodontal

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José Moral de la Rubia

2017-01-01

Full Text Available El Perfil de Impacto de Salud Oral (OHIP - 14 es el instrumento más empleado para evaluar la eficacia de tratamientos odontológicos. Con el propósito de dilucidar su estructura factorial y establecer la validez cruzada de la escala aplica da a la enfermedad periodontal (OHIP - 14 - PD , este estudio tiene como objetivos : 1 explorar la estructura factorial del OHIP - 14 - PD , y 2 contrastar la invarianza de los modelos propuestos para e l OHIP - 14 y de los derivados del análisis factorial exploratorio (AFE entre una muestra de población general y una muestra clínica odontológica . Se aplicó el OHIP - 14 - PD a 249 pacientes adultos odontológicos y 256 adultos de población general de Monterrey, México . El AFE reveló modelos de uno, dos y tres factores. Los modelos jerarqui zados propuestos arrojaron soluciones inadmisibles. Se concluye que el modelo un if actor ial tuvo las mejores propiedades, aunque el bi factor ial (impacto físico [ítems del 1 al 7] y psicosocial [ítems del 8 al 14] también resultó válido. L os dos modelos fue ron invariante s e n pesos de medida, pero no en las varianzas de los factores y residuos. En ambos modelos, el ajuste mejor ó con la inclusión de la correlación entre los residuos de los ítems 5 y 6.

Calidad de vida en los profesores normalistas de Nuevo León, México

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José Ángel Vera Noriega

2015-01-01

Full Text Available El constructo contemporáneo de “calidad de vida” implica la valoración de los recursos materiales y subjetivos con los que cuentan los individuos; valorar el bienestar o la satisfac - ción de los ciudadanos es una prioridad nacional e internacional, y principalmente se vuelve importante para analizar a poblaciones con funciones importantes dentro de la sociedad. En el presente estudio se evaluó la calidad de vida en una población de 473 profesores en formación de la zona conurbada de Monterrey. Se utilizó una prueba con cuatro escalas que integran los componentes objetivos y subjetivos de calidad de vida, que fue ajustada y evaluada por Arita (2005, 2006 y Tánori (2011. La población de estudio es muy importante porque históricamente han tenido estabilidad laboral mediante el apoyo de una comunidad magisterial sindicalizada. Se encontró que hay diferencias en cuanto a si los profesores en formación tienen un familiar que ejerce la pro - fesión de docencia, y otras variables relevantes fueron el número de miembros de la familia y la cantidad de enseres domésticos con los que cuentan. Particularmente, el componente subjetivo es el que mejor explica la calidad de vida de los profesores. Se concluye que, debido a las políticas reformistas en educación, para futuros estudios sería importante comparar la percepción de los profesores antes y después de dicha reforma.

MOLECULAR PATTERN OF MYCOBACTERIUM BOVIS ISOLATES AND ITS RELATIONSHIP WITH RISK FACTORS ASSOCIATED WITH THE PRESENCE OF BOVINE TUBERCULOSIS IN NORTHERN MEXICO

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I. F. Padilla

2011-02-01

Full Text Available The objective of this study was to determine the molecular pattern of M. bovis isolates from cattle of Northern Mexico and its relationship with some risk factors. Isolates (n=60 were obtained from the states of Coahuila (COA, n=14, Tamaulipas (TAM, n=16, Nuevo Leon (NL, n=14 and Baja California and Durango (DUR, n=16. The risk factors studied were: system of production (Dairy and Beef, state, age, lesion type (localized and generalized, and type of presentation (caseous and calcified. Samples were analyzed at the Regional Laboratory of Monterrey NL, following a spoligotyping protocol. Twenty-five spoligotypes belonging to the M. bovis complex were identified. Eleven (18.3% isolates presented a unique pattern, whereas 49 (81.7% were grouped in 14 clusters. The largest clusters had 12 and 17 isolates. The average heterozygocities per state were 21.4% (NL, 15.6% (TAM, 15.6% COA and 9.9% (DUR. The genetic distances of the isolates between states did not show differences (P > 0.05 when examined by Chi-square tests. The average genetic diversity (15.6% was due to the variation of strains within subpopulations. In this study an 8.3% difference among states was obtained, which suggest the idea of a unique strain of M. bovis with many variants and that the genetic diversity found for M. bovis could be in part due to the movement of animals between regions. Statistical analysis did not show association (P > 0.05 between risk factors and strains of M. bovis.

La educación ambiental en la valoración estética del paisaje de un monumento natural

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Geraldinne Salazar

2018-03-01

Full Text Available La percepción de estudiantes de las carreras profesionales del estado de Nuevo León con mayor población estudiantil de las ocho áreas del conocimiento consideradas por la Asociación Nacional de Universidades e Instituciones de Educación Superior (ANUIES fue evaluada sobre la belleza del paisaje del Monumento Natural Cerro de la Silla (MNCS, símbolo representativo del Área Metropolitana de Monterrey (AMM. Se diseñó un muestreo no probabilístico por cuota máxima de 25 estudiantes por carrera, quienes hubieran cursado materias sobre aspectos ambientales. Se aplicaron en total 386 encuestas, tanto en universidades del sector público (196 como del sector privado (190. Las calificaciones más altas fueron otorgadas por alumnos procedentes de las escuelas privadas; se estableció una asociación entre la valoración otorgada al paisaje del MNCS y la carrera profesional de los encuestados. No obstante que la población considerada había cursado materias sobre aspectos ambientales, solo 17 % de ambos sectores educativos manifestó tener conocimiento acerca del problema ambiental del MNCS. Es necesario fortalecer con ejemplos regionales el contenido de las materias sobre aspectos ambientales que se imparten a los estudiantes de las universidades públicas y privadas de Nuevo León., con especial atención al valor del paisaje natural de áreas protegidas como indicador de su calidad ambiental y su consecuente contribución a mejorar la calidad de vida de la sociedad.

Zerovalent bismuth nanoparticles inhibit Streptococcus mutans growth and formation of biofilm

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Hernandez-Delgadillo R

2012-04-01

Full Text Available Rene Hernandez-Delgadillo1, Donaji Velasco-Arias2, David Diaz2, Katiushka Arevalo-Niño1, Marianela Garza-Enriquez1, Myriam A De la Garza-Ramos1, Claudio Cabral-Romero11Instituto de Biotecnologia, Centro de Investigacion y Desarrollo en Ciencias de la Salud, CIDICS, Facultad de Odontologia, Universidad Autonoma de Nuevo Leon, UANL, Monterrey, Nuevo Leon, 2Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Distrito Federal, MexicoBackground and methods: Despite continuous efforts, the increasing prevalence of resistance among pathogenic bacteria to common antibiotics has become one of the most significant concerns in modern medicine. Nanostructured materials are used in many fields, including biological sciences and medicine. While some bismuth derivatives has been used in medicine to treat vomiting, nausea, diarrhea, and stomach pain, the biocidal activity of zerovalent bismuth nanoparticles has not yet been studied. The objective of this investigation was to analyze the antimicrobial activity of bismuth nanoparticles against oral bacteria and their antibiofilm capabilities.Results: Our results showed that stable colloidal bismuth nanoparticles had 69% antimicrobial activity against Streptococcus mutans growth and achieved complete inhibition of biofilm formation. These results are similar to those obtained with chlorhexidine, the most commonly used oral antiseptic agent. The minimal inhibitory concentration of bismuth nanoparticles that interfered with S. mutans growth was 0.5 mM.Conclusion: These results suggest that zerovalent bismuth nanoparticles could be an interesting antimicrobial agent to be incorporated into an oral antiseptic preparation.Keywords: zerovalent bismuth nanoparticles, antimicrobial agent, biofilm, Streptococcus mutans

Patrones de consumo de drogas lícitas e ilícitas de los pacientes que ingresan a una sala de urgencias

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Marily Daniela Amaro Hinojosa

2015-12-01

Full Text Available Introducción. El objetivo de este trabajo es identificar la disposición de las personas que acuden a una sala de urgencias en cuanto a modificar sus conductas de consumo de drogas lícitas e ilícitas.Método. El estudio fue de tipo descriptivo con un diseño transversal. La población la constituyeron 83 pacientes mayores de 18 años que sufrieron un accidente o lesión por violencia relacionado con el consumo de drogas y que ingresaron a la sala de urgencias de una institución pública de tercer nivel de atención en Monterrey, México. El muestreo se realizó en el año 2011.Resultados. La población de estudio estuvo integrada principalmente por hombres (fi=79, hi=95,2%, cuya ocupación era la de trabajador (fi=54, hi=71,1%, que ingresaron a la sala de urgencias por lesiones por violencia (fi=42, hi=50,6%, principalmente por consumo de alcohol (fi=71, hi=85,5%, seguido por el de marihuana (fi=7, hi=8,5%. Los participantes se encontraron mayormente en la etapa de contemplación, en un 62,2% (fi=46 y 77,8% (fi=7, respecto de drogas lícitas e ilícitas.Conclusión. Esencialmente, los entrevistados se encuentran en la etapa de contemplación tanto para el consumo de drogas licitas e ilícitas, lo cual precisa una corrección de tales conductas.

A Participatory Modeling Application of a Distributed Hydrologic Model in Nuevo Leon, Mexico for the 2010 Hurricane Alex Flood Event

Science.gov (United States)

Baish, A. S.; Vivoni, E. R.; Payan, J. G.; Robles-Morua, A.; Basile, G. M.

2011-12-01

A distributed hydrologic model can help bring consensus among diverse stakeholders in regional flood planning by producing quantifiable sets of alternative futures. This value is acute in areas with high uncertainties in hydrologic conditions and sparse observations. In this study, we conduct an application of the Triangulated Irregular Network (TIN)-based Real-time Integrated Basin Simulator (tRIBS) in the Santa Catarina basin of Nuevo Leon, Mexico, where Hurricane Alex in July 2010 led to catastrophic flooding of the capital city of Monterrey. Distributed model simulations utilize best-available information on the regional topography, land cover, and soils obtained from Mexican government agencies or analysis of remotely-sensed imagery from MODIS and ASTER. Furthermore, we developed meteorological forcing for the flood event based on multiple data sources, including three local gauge networks, satellite-based estimates from TRMM and PERSIANN, and the North American Land Data Assimilation System (NLDAS). Remotely-sensed data allowed us to quantify rainfall distributions in the upland, rural portions of the Santa Catarina that are sparsely populated and ungauged. Rural areas had significant contributions to the flood event and as a result were considered by stakeholders for flood control measures, including new reservoirs and upland vegetation management. Participatory modeling workshops with the stakeholders revealed a disconnect between urban and rural populations in regard to understanding the hydrologic conditions of the flood event and the effectiveness of existing and potential flood control measures. Despite these challenges, the use of the distributed flood forecasts developed within this participatory framework facilitated building consensus among diverse stakeholders and exploring alternative futures in the basin.

Impact of El Niño events on pelagic fisheries in Peruvian waters

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Ñiquen, Miguel; Bouchon, Marilú

2004-03-01

Using data from stock assesment surveys on pelagic resources during El Niño events of 1972/73, 1982/83, 1997/98, we analyze biological changes on pelagic ecosystems and pelagic fisheries during different stages of development of El Niño phenomenon: emergence, full, final and post-Niño. Results indicate changes in spatial distribution of resources, their concentration and size structure. In anchovy (Engraulis ringens) a decrease in biomass was observed, which was estimated at 1.2 million tons in September 1998, the lowest throughout the 1990s. This resource showed an asymmetric distribution towards the south of Peru. Other pelagic resources increased their biomass during or after Niño events, primarily sardine (Sardinops sagax), jack mackerel (Trachurus murphyi), pacific mackerel (Scomber japonicus), and longnose anchovy (Anchoa nasus). At the end of the El Niño phenomenon we found less productivity but more diversity in the pelagic ecosystem. During the 1997/98 El Niño, the diversity index (Manual de Ecologia, 1a Edition, Editorial Trillas, Mexico, 267pp) increased from 0.87 to 1.23-1.70. In both the emergence stage and fully developed stages of El Niño we found large numbers of sardine and longnose anchovy present simultaneously. Size structure of sardine, jack mackerel, and pacific mackerel showed an increase in juveniles. Anchovy during El Niño showed a single modal group composed of adults, but the post-Niño phase indicated an increase in juveniles with an average length of 6-7 cm. In El Niño conditions spawning among anchovy was low, but among sardine and pacific mackerel it was high. We observed, for the first time during full spawning, juvenile sardines with a total length of 18-20 cm. The anchovy spawning season during the post-Niño phase was considerably lengthened, from April to December 1998. Drastic change occurred in fisheries when monospecific fisheries, based on anchovy before El Niño, became multispecific fisheries based on sardine, jack

Trinational Library Forum [Proceedings] = Memorias del Foro Trinacional de Bibliotecas = [Actes de] Forum Trinational Des Bibliotheques (4th, Monterrey, Mexico, February 24-26, 1994).

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Instituto Tecnologico de Monterrey (Mexico).

At the fourth Trinational Library Forum in 1994, librarians from the United States, Canada, and Mexico gathered to discuss topics of international librarianship. Presentations, some in English and some in Spanish with a brief English language summary, include: (1) "Perspectivas de la Produccion y Exportaciones de la Industria Editorial…

Self-esteem, perceived self-efficacy, consumption of tobacco and alcohol in secondary students from urban and rural areas of Monterrey, Nuevo León, México Autoestima, autoeficacia percibida, consumo de tabaco y alcohol en estudiantes de educación secundaria de área urbana y rural de Monterrey, Nuevo León, México Auto-estima, auto-eficácia percebida, consumo de tabaco e álcool entre estudantes do ensino fundamental, das áreas urbana e rural, de Monterrey, Nuevo León, México

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Raúl Martínez Maldonado

2008-08-01

Full Text Available This study aimed to know the differences, if any, in the consumption of tobacco and alcohol among adolescents from urban and rural areas, and if self-esteem and self-efficacy are related to the consumption in these two groups of adolescents from secondary schools in urban and rural areas of Nuevo León México, from January to June in 2006. The study was based on the theoretical concepts of self-esteem, perceived self-efficacy and consumption of alcohol and tobacco. The design was descriptive and correlational with a sample of 359 students. A substantial difference was found in the consumption of tobacco among secondary students from urban and rural areas (U= 7513.50, p = .03. The average consumption in urban area was higher (average chi = .35 than in the rural area (average chi = .14. A negative and significant relation was found between the quantity of drinks consumed on a typical day and self-esteem (r s = - .23, p El propósito del estudio fue conocer si existen diferencias en el consumo de tabaco y alcohol en adolescentes del área urbana y rural y si la autoestima y la autoeficacia se relacionan con el consumo en estos dos grupos de adolescentes que estudian en la educación secundaria en el área urbana y rural de Nuevo León México, entre enero y junio de 2006. El estudio se realizó bajo los conceptos teóricos de autoestima, autoeficacia percibida y consumo de alcohol y tabaco. El diseño fue descriptivo y correlacional. La muestra fue de 359 estudiantes. Se encontró diferencia significativa de consumo de tabaco en estudiantes de secundaria urbana y rural (U= 7513.50, p=.03 siendo más alta la media de consumo en área urbana (media ji =.35 que en la rural (media ji =.14. Se encontró relación negativa y significativa de cantidad de bebidas consumidas en un día típico y la autoestima (r s=-.23, pO propósito deste estudo foi verificar diferenças no consumo de tabaco e álcool entre adolescentes das áreas urbana e rural, e se a auto-estima e auto-eficácia se relacionam com o consumo nestes dois grupos de adolescentes do ensino fundamental nas áreas urbana e rural de Nuevo León México, entre janeiro e junho de 2006. Este estudo, descritivo e correlacional, se baseou nos conceitos teóricos de auto-estima, auto-eficácia percebida e consumo de álcool e tabaco. A mostra foi de 359 estudantes. Encontrou-se diferença significativa de consumo de tabaco entre estudantes do ensino fundamental, áreas urbana e rural, (U= 7513.50, p=.03 sendo mais alta a média de consumo em área urbana (média chi =.35 que na rural (média chi =.14. Encontrou-se relação, negativa e significativa, entre quantidade de bebidas consumidas num dia típico e a auto-estima (r s=-.23, p<.001, assim como da quantidade de cigarros consumidos num dia típico (r s=-.20, p< .001.

Estudio descriptivo del uso de drogas en adolescentes de educación media superior de la ciudad de Monterrey, Nueva León, México

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Gregorio Martinez Rodríguez

Full Text Available Se buscó establecer el perfil de consumo de drogas lícitas e ilícitas, patrones de consumo y estrategias de afrontamiento y resistencia al alcohol, tabaco y otras drogas en adolescentes de educación media superior. El estudio se sustentó en los conceptos de autores especializados en el tema considerándose las características conductuales, psicológicas y normativas de la persona. La muestra no probabilística consistió de 325 jóvenes. Los resultados indicaron que 67%, 65% y 7% de los adolescentes aceptaron haber usado alcohol, tabaco y marihuana alguna vez en su vida respectivamente y en el último mes el 33%, 38% y 3% esas mismas substancias, 65% consideran que la mayoría de sus compañeros han hecho uso; 56% tuvieron que rechazar una vez el ofrecimiento de alcohol, 64% tabaco y 51% marihuana, en el último mes con base en esos hallazgos. Se recomienda implementar un programa de prevención orientado a apoyar los recursos del adolescente para resistir las presiones para el consumo.

Estudio descriptivo del uso de drogas en adolescentes de educación media superior de la ciudad de Monterrey, Nueva León, México

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Martinez Rodríguez Gregorio

2004-01-01

Full Text Available Se buscó establecer el perfil de consumo de drogas lícitas e ilícitas, patrones de consumo y estrategias de afrontamiento y resistencia al alcohol, tabaco y otras drogas en adolescentes de educación media superior. El estudio se sustentó en los conceptos de autores especializados en el tema considerándose las características conductuales, psicológicas y normativas de la persona. La muestra no probabilística consistió de 325 jóvenes. Los resultados indicaron que 67%, 65% y 7% de los adolescentes aceptaron haber usado alcohol, tabaco y marihuana alguna vez en su vida respectivamente y en el último mes el 33%, 38% y 3% esas mismas substancias, 65% consideran que la mayoría de sus compañeros han hecho uso; 56% tuvieron que rechazar una vez el ofrecimiento de alcohol, 64% tabaco y 51% marihuana, en el último mes con base en esos hallazgos. Se recomienda implementar un programa de prevención orientado a apoyar los recursos del adolescente para resistir las presiones para el consumo.

Comunicación interpersonal en matrimonios de doble ingreso: retos y estrategias de las mujeres mexicanas para comunicarse con su pareja

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María Eugenia GONZALEZ ALFITA

2015-05-01

Full Text Available Con un enfoque en el balance trabajo-familia, este estudio exploratorio se enfocó en encontrar los retos de comunicación que las mujeres mexicanas perciben en su matrimonio. El objetivo fue identificar esos retos y examinar qué estrategias utilizan las mujeres para resolverlos. También se exploró la naturaleza de los principales temas sobre los que habla la pareja. Este estudio se llevó a cabo en la ciudad de Monterrey, en el estado de Nuevo León, México, e incluyó a 23participantes de sexo femenino, de 22 años en adelante, que viven en matrimonio en el que ambos cónyuges trabajan fuera del hogar y tienen hijos, y que accedieron a ser audiograbadas en una entrevista. Los resultados de esta investigación cualitativa indican que el principal reto de comunicación para que las mujeres se comuniquen con su pareja es no tener tiempo suficiente para hacerlo, seguido del cansancio que experimentan después de una jornada de trabajo. La estrategia más utilizada para vencer el reto de poder conversar con su pareja fue comer juntos. Finalmente, los principales temas de los que habla la pareja fueron acerca de los hijos, de sus trabajos y de los planes futuros como familia. Los resultados de este estudio indican que el trabajo y la familia como factor que interviene en la comunicación esposo-esposa, no impide que las mujeres desarrollen de forma eficiente sus propios patrones para involucrarse tanto en su vida de trabajo como en su vida familiar.

El embarazo a temprana edad. Perspectiva de progenitores y madres adolescentes

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Luis Manuel Rodríguez Otero

2016-11-01

Full Text Available El embarazo adolescente refiere al que se produce entre la adolescencia inicial o pubertad. La gestación y maternidad durante este periodo implica distintas consecuencias a nivel personal, familiar y social. Destacando cuestione como: la mortalidad, la morbilidad, el aborto, enfermedades de transmisión sexual, el abandono escolar, posiciones de vulnerabilidad, la reproducción de la pobreza, etc. Por otro lado existen factores que favorecen la existencia de esta problemática tales como: aspectos geográficos, cuestiones sociofamiliares e individuales, las políticas públicas, los recursos existentes, el nivel formativo o conocimiento al respecto, estilos de vida no saludables, el matrimonio a edades tempranas, el rol de género tradicional asignado a la mujer, etc. Utilizando como muestra a 6 madres a temprana edad y 6 progenitores de madres adolescentes del Área Metropolitana de Monterrey, se plantea una investigación cualitativa a través del análisis de contenido y categorización de entrevistas con el objetivo de identificar la percepción que poseen respecto al embarazo a temprana edad. Así como las causas, consecuencias y las medidas existentes. Los resultados evidencian la manifestación de distintas causas individuales, políticas, familiares y sociales en la muestra, así como diversas consecuencias tanto individuales como familiares. Así mismo se observa que la escuela es la principal fuente de información. Es por ello que se propone revisar las medidas preventivas al respecto y la intervención tomando en consideración a las madres que ya son adolescentes para minimizar las posibles consecuencias descritas.

[The use of seatbelts and child seats in drivers and passengers of motor vehicles in four metropolitan areas in Mexico].

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Cervantes-Trejo, Arturo; Leenen, Iwin

2015-01-01

To estimate the rate of seatbelt and child seat use in drivers and passengers of motor vehicles in four metropolitan areas in Mexico (Guadalajara, León, Monterrey and Mexico City). To evaluate the impact of the Mexican Initiative for Road Safety (IMESEVI) in this respect. Data were collected at the start of IMESEVI (June 2008) and one year after the program's implementation (October 2009) in the four participating metropolitan areas. In particular, the use of seatbelts and child seats was observed in occupants of automobiles, station wagons, and light trucks. The sample included 28,412 (pre) and 52,274 (post) individuals, of which 1,454 (pre) and 1,679 (post) were younger than five years old. The data analysis was based on a hierarchical logistic model. Globally, the probability of using either safety device is 46% (95% CI: 43-49%) at baseline and 52% (95% CI: 48-55%) at the post measurement, with large differences, though, among the four participating metropolitan areas. Factors that significantly affect their use include the individual's position in the vehicle, the type and age of the vehicle, and the individual's sex. Child seat use is very limited. At baseline, about 17% (95% CI: 11-25%) of children below five years old travelled in a special seat, with this number increasing to 26% (95% CI: 19-34%) after the implementation of IMESEVI. Child seat use for children above four years is virtually nonexistent. Continued efforts are required to raise the public awareness of the importance of using safety devices, especially for passengers in the back of the car as well as with respect to the use of adapted seats for small children.

[Use of alternative medicine in the treatment of allergic diseases].

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Félix Berumen, José Alfredo; González Díaz, Sandra Nora; Canseco González, Carlos; Arias Cruz, Alfredo

2004-01-01

The alternative medicine and the complementary medicine are forms of treatment very spread and frequently demanded by patients with allergic diseases. According to recent studies, homeopathy, acupuncture and herbal medicine are the most commonly used types of alternative medicine. To know the frequency in the use of different types of alternative medicine for the treatment of allergic diseases in patients attended at the Centro Regional de Alergia e Immunologia Clínica of the Hospital Universitario de Monterrey, Nuevo León. A transversal, descriptive and observational study was done by the use of questionnaires applied to patients and/or patients' relatives attended in this Center. This survey included questions to focus the investigation in the use of a Iternative medicine for the treatment of any allergic disease. The data analysis was done by descriptive statistics. Four hundred one questionnaires were applied. The average age of the patients was of 14 years (range from 1 to 73 years). Fourty-seven percent (189 patients) were female and 58.2% (212 patients) were male. The diagnoses included: allergic rhinitis in 215 patients (53.6), asthma in 97 (24.2%), rhinitis and asthma in 73 (18.2) and atopic dermatitis in 16 (4%). Out of the patients 34.4% (138) had used at least one type of alternative medicine for the treatment of their allergic disease. Homeopathy was the most commonly used type of alternative medicine (78.2%), followed by the natural medicine (31.5%). Alternative medicine for the treatment of allergic diseases is frequent in patients who attend to this center. Homeopathy and the natural medicine are the most used.

Costo de la atención de la hipertensión arterial y su impacto en el presupuesto destinado a la salud en México

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Villarreal-Ríos Enrique

2002-01-01

Full Text Available Objetivo. Determinar el costo de la atención de la hipertensión arterial, su impacto en el gasto en salud y en el producto interno bruto (PIB de México. Material y métodos. Diseño ecológico, efectuado de junio a noviembre de 1999 en el Instituto Mexicano del Seguro Social (IMSS, en la ciudad de Monterrey, Nuevo León, México. Se seleccionó aleatoriamente una muestra de expedientes clínicos con diagnóstico de hipertensión arterial, a los cuales se les contabilizó el uso de los servicios de salud y paralelamente se estimó el costo unitario por servicio. El costo por servicio y por paciente hipertenso se calculó ajustando el costo unitario en función de la utilización promedio y de un escenario extremo, cantidad que se proyectó a la población total de hipertensos y el resultado se comparó con el gasto anual en salud realizado en México. Resultados. El costo anual por hipertenso en la Seguridad Social correspondió a $1 067 en el escenario promedio y de $3 913 en el escenario extremo. El gasto anual en hipertensión arterial equivale a 13.95% del presupuesto destinado a la salud y a 0.71% del PIB, valores que se modifican a 51.17% y 2.62% respectivamente en el escenario extremo. Conclusiones. La hipertensión arterial consume gran cantidad de recursos, por lo que deberá ser objeto de estudio por equipos multidisciplinarios de salud, en la búsqueda de alternativas de manejo más eficientes.

Online Experiential Learning: Effective Applications for Geoscience Education

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Matias, A.; Eriksson, S. C.

2015-12-01

Students today are rarely satisfied with a one-size-fits-all educational experience. The rapid changing landscape of the web and other technologies are breaking down communicationand geographic barries. More students are increasingly turning to the web for quality education that fits into their lives. As a result, higher education institutions are expanding their offerings through online courses. Nonetheless, online learning brings challenges as well as a fresh opportunityfor exploring practices not present in traditional higher education programs, particularly in the sciences. We are in a unique position to empower students to make strategic academic and professional decisions in global terms. Online learning, supportedwith hands-on and minds-on activities, actively engages student with critical thinking skills and higher level learning. This presentation will showcase examples from a series of geoscience and environmental science courses currently offered fully online at SUNY Empire State College (ESC). Taking advantage of the proliferation of tools currently available for online learning management systems, we will explore how we approach course developent to create an interactive learning environment. Students learn through case studies, group projects and understanding real-world issues while learning concepts. Particular focus will be given to an international collaboration with the Tecnologico de Monterrey, Chihuahua Campus. This collaboration took place during the Spring of 2015 with students from the fully-online, lower-level Geology and the Environment course at ESC and the upper-level, face-to-face Mobile Programming course in Mexico. Ultimately, the goal of this presentation is to show faculty members and afministrators the pedagogical principles and approach used with the expectation that it could help support development of online learning opportunities at their institutions.

Avances de la fruticultura en México

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Angel Villegas Monter

2011-10-01

Full Text Available Las estadísticas oficiales informaron que en 2008 se cultivaron 264 944 ha con valor de la producción de $ 14 741 millones de pesos, en 20 frutales de clima templado; mientras que, en 35 tropicales y subtropicales fue de 1 822748 ha con valor de $ 43 463 millones de pesos. De los 55 frutales, sólo naranjo (Citrus sinensis, mango (Mangifera indica, Aguacate (Persea americana, limón mexicano (C. aurantifolia, banano (Musa acuminata, lima persa (C. latifolia y manzano (Malus domestica se cultivan más de 50 000 ha, lo que explica porque es limitada la oferta de frutas en las grandes ciudades (Distrito Federal, Monterrey, Guadalajara, Puebla, Veracruz, entre otras. Considerando que el 79,27% de la superficie plantada con frutales tropicales y subtropicales es de temporal, las densidades de plantación son bajas, la propagación de plantas no se hace en viveros certificados (sólo cítricos, los rendimientos son bajos en comparación con otros países productores. Por otra parte, debido a la falta de técnicos capacitados, en los últimos 28 años la demanda de fruta se ha solucionado incrementando la superficie plantada, pero los rendimientos han disminuido. La presencia de nuevas enfermedades; Huanglongbing, Meleira, Sunblotch, plantean nuevos retos y también posibilidades si utilizamos los avances tecnológicos. La fruticultura es una alternativa viable pero deben utilizar altas densidades, árboles de porte bajo, plantas de origen genético conocido y calidad fitosanitaria probada que permitan tener mayores rendimientos y con ello competitividad.

The Mexican migration to the US and substance use in Northern Mexico

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Borges, Guilherme; Medina-Mora, Maria-Elena; Orozco, Ricardo; Fleiz, Clara; Cherpitel, Cheryl; Breslau, Joshua

2009-01-01

Aims To examine the impact of migration to the US on substance use and substance use disorders in three urban areas of Northern Mexico. Design Cross-sectional survey of immigration related experiences and lifetime and past-year alcohol and drug use, in a representative sample of respondents ages 12 to 65. Setting Interviews were conducted in the cities of Tijuana, Ciudad Juarez, and Monterrey during 2005. Respondents were classified into three groups: 1) “return migrants”, 2) “relatives of migrants” and 3) “others in the general population”. Findings A total of 1,630 completed interviews were obtained for a response rate of 70.5%. “Return migrants” were more likely to have used alcohol, marijuana or cocaine at least once in their lifetime and in the last 12-months, more likely to develop a substance use disorder, and more likely to have a 12-month substance use disorder, compared with “others in the general population”. Among “return migrants”, longer length of time in the US and type of work performed as an immigrant were related to higher prevalence of substance use. Among “relatives of migrants”, migration experiences were not associated with increased prevalence of substance use compared with “others in the general population”. Conclusion This study found a link between migration to the US and the transformation of substance use norms and pathology in Mexico. Future research of pre-migration involvement in substance use and data on the timing of events among return migrants is needed. Public health measures are likely to require cross-border coordination of research and service development. PMID:19215601

Prácticas y significados del uso del condón en varones adolescentes de dos contextos de México

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David DE JESÚS-REYES

2014-01-01

Full Text Available El objetivo de este artículo fue conocer las prácticas y profundizar en los significados que varones adolescentes en dos contextos de México, dan al uso del condón en sus relaciones sexuales. Los datos provienen de una investigación cualitativa que toma como base la línea teórica del Construccionismo Social. La investigación se realizó en el área metropolitana de Monterrey y en un municipio del estado de Guerrero. La población de estudio fueron varones menores de 19 años que en el momento de la entrevista ya se habían iniciado sexualmente. Para la recolección de información se realizaron dos entrevistas grupales y 28 entrevistas a profundidad. El análisis de la información fue inductivo a partir de la teoría fundamentada, utilizando el software Nvivo 10. Los resultados permiten comprender que a partir del contexto a que se refiera, las prácticas y los significados en el uso del condón van a variar, mucho de ello dependerá de la imagen y percepción del riesgo que el varón se construye de la mujer, lo que marca el tipo de encuentro y el uso del condón en sus relaciones sexuales. Se puede concluir que el modelo hegemónico de masculinidad y las relaciones desiguales de género, permiten que los adolescentes de los contextos estudiados construyan socialmente connotaciones y significados del uso de condón, las cuales, tienen consecuencias en su vida actual y futura.

Use of Combined Observational- and Model-Derived Photochemical Indicators to Assess the O3-NOx-VOC System Sensitivity in Urban Areas

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Edson R. Carrillo-Torres

2017-01-01

Full Text Available Tropospheric levels of O3 have historically exceeded the official annual Mexican standards within the Monterrey Metropolitan Area (MMA in NE Mexico. High-frequency and high-precision measurements of tropospheric O3, NOy, NO2, NO, CO, SO2, PM10 and PM2.5 were made at the Obispado monitoring site near the downtown MMA from September 2012 to August 2013. The seasonal cycles of O3 and NOy are driven by changes in meteorology and to a lesser extent by variations in primary emissions. The NOy levels were positively correlated with O3 precursors and inversely correlated with O3 and wind speed. Recorded data were used to assess the O3-Volatile Organic Compounds (VOC-NOx system’s sensitivity through an observational-based approach. The photochemical indicator O3/NOy was derived from measured data during the enhanced O3 production period (12:00–18:00 Central Daylight Time (CDT, GMT-0500. The O3/NOy ratios calculated for this time period showed that the O3 production within the MMA is VOC sensitive. A box model simulation of production rates of HNO3 (PHNO3 and total peroxides (Pperox carried out for O3 episodes in fall and spring confirmed the VOC sensitivity within the MMA environment. No significant differences were observed in O3/NOy from weekdays to weekends or for PHNO3/Pperox ratios, confirming the limiting role of VOCs in O3 production within the MMA. The ratified photochemical regime observed may allow the environmental authorities to revise and verify the current policies for air quality control within the MMA.

Results in energy saving obtained with the application of speed variator in fossil power stations; Resultados de ahorro de energia obtenidos con la aplicacion de variadores de velocidad en centrales termoelectricas

Energy Technology Data Exchange (ETDEWEB)

Merlos Rueda, Rosa Maria [Programa de Ahorro de Energia del Sector Electrico (PAESE), Mexico, D. F. (Mexico)

1999-07-01

The project of installation of speed variator in fossil power stations (CT's) of Comision Federal de Electricidad (CFE), as an energy saving measure, is a pilot project that began with the support of the Subdivision de Generacion, and promoted by the Energy Saving Program of the Electric Sector (PAESE), with the putting in operation of an equipment in the condensate pump of the Punta Prieta II C. T. U3. The energy saving observed was substantial, fluctuating between the 19.4% at high loads (at 90% load) and the 71.1% at low loads (at 40% load) of the generating unit. With these results, it was decided to extend the scope of the project with the installation of 6 more equipment for equal number of fossil power stations, located in 4 of the 5 Regions of Generation. The fossil power stations, selected for this stage of the project were: C. T. Felipe Carrillo Puerto U1, C.T. Lerma U4, C.T. Salamanca U1, C.T. Monterrey U6, C.T. Francisco Villa U3 and the C.T. Punta Prieta II-U1. The equipment was in operation during the first quarter of 1998, and the first results indicate an energy savings average per equipment, between 39% and 52%. The recovery of the investment fluctuates between the 48.4% and the 87.6% in less than two years of operation, with which a maximum period of recovery of 3 years is expected. The estimated potential of energy saving, considering the application of these devices in condensate pumps, feedwater pumps (where no speed variator is installed) forced draft fans, induced draft fans and gas recirculation fans, as well as circulation water pumps, of the existing Generating Power stations, ascends to an annual total of 830,000, which represents an approximate 9.4% of the National consumption of self services. [Spanish] El proyecto de instalacion de variadores de velocidad en Centrales Termoelectricas (CT's) de la Comision Federal de Electricidad (CFE), como medida de ahorro de energia, es un proyecto piloto que se inicio con el apoyo de la

Relación entre la depresión, la ansiedad y los síntomas psicosomáticos en una muestra de estudiantes universitarios del norte de México The relationship among depression, anxiety, and somatic symptoms in a sample of university students in northern Mexico

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Mónica Teresa González Ramírez

2009-02-01

Full Text Available OBJETIVO: Determinar la relación existente entre la ansiedad, la depresión y los síntomas psicosomáticos en una muestra de estudiantes universitarios del norte de México. MÉTODOS: Se realizó un estudio exploratorio a partir de cuestionarios de autoinforme aplicados a una muestra de conveniencia de 506 estudiantes de psicología de dos universidades de Monterrey, estado de Nuevo León, México. Para evaluar los síntomas psicosomáticos se uti lizó el cuestionario sobre la salud del paciente, para la depresión se empleó el inventario de Beck y la ansiedad se evaluó mediante la escala social para adolescentes. Se utilizó la correlación de Spearman para determinar el nivel de significación de la relación entre las variables y la prueba de Kruskal-Wallis para comparar los niveles de ansiedad y depresión en los grupos de estu diantes conformados según la intensidad de los síntomas psicosomáticos. RESULTADOS: De los participantes, 129 (25,5% presentaron síntomas psicosomáticos de intensidad media o alta, solo 4 (0,8% manifestaron depresión intensa y únicamente 2 (0,4% estudiantes presentaron niveles de ansiedad por encima del 75% de la puntuación máxima de la escala. La intensidad de los síntomas psicosomáticos aumentó a la par que aumentaban los ni veles de ansiedad y depresión. Los síntomas psicosomáticos más frecuentes y que causaban mayor preocupación en la muestra fueron: dolores de cabeza, menstruales y de espalda, así como sentirse cansado y dificultades para dormir. CONCLUSIONES: Se confirmó la relación directa entre la intensidad de los síntomas somáticos, la depresión y la ansiedad. Se recomienda incluir en los programas de prevención o trata miento de cualquiera de estos tres trastornos a los otros dos. Se deben implementar programas específicos para los jóvenes universitarios.OBJECTIVE: To determine how anxiety, depression, and somatic symptoms are related in a sample of university students in

The ideal of beauty in the building of recognition marks in ocularcentric societies: the building of the body in blind women in Metropolitan Area in Monterrey

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Brenda Araceli Bustos García

2014-12-01

Full Text Available The aim of this paper is around the question: How do the blind women build the body image? Are they influenced by the hegemonic discourse of the ideal of beauty? At first we define the characteristics of an ocularcentric society. Than once we make a deconstruction of empirical research about the body building in blind women. Finally we present our proposed analysis, relying on narrative psychology, developing a perspective that interprets the building body in blind women as a narrative act through which marks recognition are used to evaluate and classify something as beautiful and attractive. In the analysis of the interviews we found that building of recognition marks has two variables: a one in which certain distrusts and even rejections in the opinions generated is shown by using senses such as smell , touch, etc. (b Other one in which a concept is constructed: tactile aesthetics. Distrust or acceptance of aesthetic tactile is generated mainly by aspects such as: (a age at which they lost the sight (b job they do (c blindness condition time.

Optimization of supercritical carbon dioxide (CO2 extraction of sardine (Sardinella lemuru Bleeker oil using response surface methodology (RSM

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Gedi, M. A.

2015-06-01

Full Text Available Oil was extracted from freeze-dried sardine (Sardinella lemur fillets using supercritical carbon dioxide (SC-CO2 and a few milliliters of ethanol were optimized with response surface methodology (RSM. The impact of extraction pressure (200–400 bars and temperature (40–70 °C were studied on the total extraction yields, ratios of Eicosapentaenoic acid (EPA and Docosahexaenoic acid (DHA. The results were compared with those of Soxhlet and modified Kinsella methods (MKM. The oils obtained using the SC-CO2 and MKM methods were significantly (P El aceite se extrae de filetes de sardinas (Sardinella lemur liofilizando, mediante dióxido de carbono supercrítico (SC-CO2 y unos mililitros de etanol, optimizándose mediante la metodología de superficie de respuesta (RSM. Se ha estudiado la influencia de la presión de extracción (200–400 bars y la temperatura (40–70 °C sobre los rendimientos de extracción total, y sobre las relaciones de ácido eicosapentaenoico (EPA y ácido docosahexaenoico (DHA. Los resultados se compararon con los obtenidos mediante extracción con Soxhlet y el método de Kinsella modificado (MKM. Los aceites obtenidos mediante SC-CO2 y métodos MKM fueron significativamente (P < 0.05 superiores en rendimientos de aceite (8,04% y 6,83%, EPA (5,43% y 5,45% y DHA (18,76% y 18,54%, respectivamente, en comparación con rendimientos mediante Soxhlet (5,10%, EPA (2,17% y DHA (06,46%. De las dos variables independientes, la presión tuvo un efecto crítico sobre el rendimiento, mientras que los porcentajes de EPA y DHA estuvieron notablemente influenciados por la temperatura. Los valores óptimos fueron para una presión de 328 bar y una temperatura de 40 °C, y sus correspondientes respuestas fueron 7,20%, 5,68% y 20,09% para el rendimiento, EPA y DHA, respectivamente. Los valores experimentales de este estudio fueron los previstos y son comparables razonablemente con sus homólogos.

Risk factors and current health seeking patterns of migrants in northeastern Mexico: healthcare needs for a socially vulnerable population

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Philippe eStoesslé

2015-08-01

Full Text Available This study identified risk factors for health and access to healthcare services of migrants during their journey across Mexico to the United States. Data were collected in shelters located in Monterrey, the largest city of northeastern Mexico, through a basic clinical examination and a survey completed by 75 migrants; 92% of them were undocumented Central Americans. During their transit, they are at a high risk of contracting, developing, and transmitting diseases. The need of working to survive affects health-seeking behavior and a constant fear of being traced keeps migrants away from public health services, which delays diagnosis and treatment of diseases. Negligent lifestyles, such as smoking, drinking (31.8% of men and 11.1% of women, and drug abuse (13% of men and 11% of women, were found. Regarding tuberculosis (TB, undocumented migrants are usually not screened, even though they come from countries with a high TB burden. Besides, they might be overexposed to TB because of their living conditions in overcrowded places with deficient hygiene, protection, and malnutrition (54.7% of the sample. Possible comorbidities like acquired immune deficiency syndrome (AIDS; 4% and diabetes (2.7%, but probably under-diagnosed were referred. Migrants have little TB knowledge, which is independent of their level of education or a previous experience of deportation. About one-third of the migrants were totally unfamiliar with TB-related symptoms, while 36% had correct knowledge of basic TB symptoms. We conclude that a shortage of information on the highly vulnerable migratory population combined with a lack of social support and health education among migrants may play a significant role in the spread of communicable diseases. We recommend that health authorities address this urgent, binational, public health concern, in order to prevent outbreaks of emerging infections.

[Asthma mortality in the state of Nuevo León, México].

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Canseco González, C; González Díaz, S; Alvarado Valdés, C

1993-01-01

Definition of asthma has radically changed in the last few years. It has been given great importance to the its inflammatory component that can become irreversible. It is not clear yet the cause of the increase in prevalence and mortality of asthma observed in developed countries despite an increase in the number and efficacy of the therapeutic resources. There is still much to do on studying of the statistics on prevalence and mortality rate of the undeveloped countries. In Latin America, asthma prevalence, in 1983 was reported in 3.5% in seven countries. We reviewed the death certificates in the state of Nuevo León, México, in the 1980's decade, and compared the total death rate with those attributed to asthma, according to the diagnostics criteria code 493 from the International Classification of Diseases. We also reviewed the clinical records of patients admitted to a general hospital (University Hospital of Monterrey, Nuevo Leon, Mexico) as well as the autopsy reports from the same time period. General mortality rate, as well as the mortality rate due to respiratory diseases (asthma, emphysema, chronic bronchitis and others) was unchanged (5.5 x 100,000 people), despite an increase of 100% in the size of the population. Asthma prevalence has increased from 1.2% in 1979 to 2.5% in 1989 (approximately 75,000 cases). From the 1,114 autopsies done in the University Hospital in the 1980's decade, none could be attributed to an asthma death. It is mandatory that other states in this country report parallel studies to ours, so we can have reliable data on prevalence and mortality rates of asthma. In doing so, we can learn the distribution and consequences of this disease.

Study for the selection of optimal site in northeastern, Mexico for wind power generation using genetic algorithms.

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Gonzalez, T.; Ruvalcaba, A.; Oliver, L.

2016-12-01

The electricity generation from renewable resources has acquired a leading role. Mexico particularrly it has great interest in renewable natural resources for power generation, especially wind energy. Therefore, the country is rapidly entering in the development of wind power generators sites. The development of a wind places as an energy project, does not have a standardized methodology. Techniques vary according to the developer to select the best place to install a wind turbine system. Generally to install the system the developers consider three key factors: 1) the characteristics of the wind, 2) the potential distribution of electricity and 3) transport access to the site. This paper presents a study with a different methodology which is carried out in two stages: the first at regional scale uses "space" and "natural" criteria in order to select a region based on its cartographic features such as politics and physiographic division, location of conservation natural areas, water bodies, urban criteria; and natural criteria such as the amount and direction of the wind, the type and land use, vegetation, topography and biodiversity of the site. The result of the application of these criteria, gives a first optimal selection area. The second part of the methodology includes criteria and variables on detail scale. The analysis of all data information collected will provide new parameters (decision variables) for the site. The overall analysis of the information, based in these criteria, indicates that the best location that the best location of the field would be the southern Coahuila and the central part of Nuevo Leon. The wind power site will contribute to the economy grow of important cities including Monterrey. Finally, computational model of genetic algorithm will be used as a tool to determine the best site selection depending on the parameters considered.

Buenas prácticas para la selección de recursos educativos abiertos: experiencias del MOOC innovación educativa con REA

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Acuña Sossa, Mildred

2016-05-01

Full Text Available El artículo expone la indagación acerca de los Recursos Educativos Abiertos (REA con la colaboración interuniversitaria entre el Instituto Tecnológico de Estudios Superiores de Monterrey, México, y la Universidad Estatal a Distancia de Costa Rica. Esta temática ha sido poco estudiada y ambas universidades se vieron en la necesidad de conocer cómo se realiza la selección de estos recursos. Asimismo, expresa las buenas prácticas de selección de REA utilizadas por los participantes en el curso Innovación Educativa con Recursos Abiertos que se facilitó mediante el formato Massive Open Online Course (MOOC por sus siglas en inglés y así, formular recomendaciones que orienten su elección. Con una investigación exploratoria de tipo cualitativo se realizó una revisión de instrumentos de autoevaluación completados por los participantes, se generaron categorías para describir los aportes publicados en los foros del curso y las tareas que completaron los participantes con respecto al tema de REA. Se concluyó que lo habitual es hacer una valoración directa del recurso antes de usarlo o consultar con colegas o expertos en la materia para hacer una selección adecuada y útil para la práctica educativa. También se destacó que la búsqueda de estos recursos se realiza con la ayuda del navegador web Google, en las revistas digitales y las bases de datos institucionales. Además, se resalta la necesidad de un mejor manejo de los REA por parte de los participantes del curso, y de generar más habilidades para su búsqueda y selección.

BUENAS PRÁCTICAS PARA LA SELECCIÓN DE RECURSOS EDUCATIVOS ABIERTOS: EXPERIENCIAS DEL MOOC INNOVACIÓN EDUCATIVA CON REA

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Mildred Acuña Sossa

2016-01-01

Full Text Available El artículo expone la indagación acerca de los Recursos Educativos Abiertos (REA con la colaboración interuniversitaria entre el Instituto Tecnológico de Estudios Superiores de Monterrey, México, y la Universidad Estatal a Distancia de Costa Rica. Esta temática ha sido poco estudiada y ambas universidades se vieron en la necesidad de conocer cómo se realiza la selección de estos recursos. Asimismo, expresa las buenas prácticas de selección de REA utilizadas por los participantes en el curso Innovación Educativa con Recursos Abiertos que se facilitó mediante el formato Massive Open Online Course (MOOC por sus siglas en inglés y así, formular recomendaciones que orienten su elección. Con una investigación exploratoria de tipo cualitativo se realizó una revisión de instrumentos de autoevaluación completados por los participantes, se generaron categorías para describir los aportes publicados en los foros del curso y las tareas que completaron los participantes con respecto al tema de REA. Se concluyó que lo habitual es hacer una valoración directa del recurso antes de usarlo o consultar con colegas o expertos en la materia para hacer una selección adecuada y útil para la práctica educativa. También se destacó que la búsqueda de estos recursos se realiza con la ayuda del navegador web Google, en las revistas digitales y las bases de datos institucionales. Además, se resalta la necesidad de un mejor manejo de los REA por parte de los participantes del curso, y de generar más habilidades para su búsqueda y selección.

“Como Arrancar una Planta”: Women’s Reflections about Influences of Im/Migration on Their Everyday Lives and Health in Mexico

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Eva K. Robertson

2015-04-01

Full Text Available The aim of this study is to analyze women’s reflections about how experiences of im/migration from rural to urban settings in Monterrey, Mexico, influence their everyday life experience and health and that of their families. The participants were eight women from heterogeneous indigenous backgrounds, one woman with a mestizo background, two health professionals, three persons from organizations supporting indigenous groups, and two researchers. I collected data from personal observations, documents, and interviews that I then analyzed with a critical ethnography methodology developed by Carspecken. The women emphasized that food habits were the first to be adapted to circumstances in an urban everyday life constrained by working conditions. Together with their experiences of discrimination and violence, urban living determines the challenges and the priorities of daily life. Urban life affects how they perceive and treat their own and their family’s health and wellbeing. Nevertheless, their sense of belonging and home remains in their communities of origin, and they strive to reach a balance in their lives and preserve a connection to their roots, motherhood, and traditional knowledge. However, the women handle their im/migration experiences in diverse ways depending on their own conditions and the structural forces limiting or allowing them to act in decisive life situations. Im/migration is not just a matter of choice; it is about survival and is influenced by social determinants and “structural vulnerability” that influences and/or limit human agency. These, together with an unsustainable economic situation, make migration the only option, a forced decision within households. Structural forces such as social injustice in welfare policies restrict human rights and rights for health. Social determinants of health can constrain decision making and frame choices concerning health and childbearing in everyday life.

Investigation of the geochemical evolution of groundwater under agricultural land: A case study in northeastern Mexico

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Ledesma-Ruiz, Rogelio; Pastén-Zapata, Ernesto; Parra, Roberto; Harter, Thomas; Mahlknecht, Jürgen

2015-02-01

Zona Citrícola is an important area for Mexico due to its citriculture activity. Situated in a sub-humid to humid climate adjacent to the Sierra Madre Oriental, this valley hosts an aquifer system that represents sequences of shales, marls, conglomerates, and alluvial deposits. Groundwater flows from mountainous recharge areas to the basin-fill deposits and provides base flows to supply drinking water to the adjacent metropolitan area of Monterrey. Recent studies examining the groundwater quality of the study area urge the mitigation of groundwater pollution. The objective of this study was to characterize the physical and chemical properties of the groundwater and to assess the processes controlling the groundwater's chemistry. Correlation was used to identify associations among various geochemical constituents. Factor analysis was applied to identify the water's chemical characteristics that were responsible for generating most of the variability within the dataset. Hierarchical cluster analysis was employed in combination with a post-hoc analysis of variance to partition the water samples into hydrochemical water groups: recharge waters (Ca-HCO3), transition zone waters (Ca-HCO3-SO4 to Ca-SO4-HCO3) and discharge waters (Ca-SO4). Inverse geochemical models of these groups were developed and constrained using PHREEQC to elucidate the chemical reactions controlling the water's chemistry between an initial (recharge) and final water. The primary reactions contributing to salinity were the following: (1) water-rock interactions, including the weathering of evaporitic rocks and dedolomitization; (2) dissolution of soil gas carbon dioxide; and (3) input from animal/human wastewater and manure in combination with by denitrification processes. Contributions from silicate weathering to salinity ranged from less important to insignificant. The findings suggest that it may not be cost-effective to regulate manure application to mitigate groundwater pollution.

Consumo de alcohol y tabaco en estudiantes de enfermería

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Juan Yovani Telumbre-Terrero

2015-12-01

Full Text Available Introducción. Los estudiantes de enfermería están inmersos en un contexto cultural tanto protector como de riesgo en cuanto  al consumo de drogas, durante su proceso académico y/ o laboral, dado que enfrentan diversas situaciones físicas, emocionales y sociales que pueden aumentar la probabilidad de consumo con el fin de mitigar tales situaciones. El objetivo de la presente investigación fue determinar el tipo de consumo de alcohol y tabaco en estudiantes de enfermería. Método. La población estuvo formada por 172 estudiantes de un programa de Licenciatura en Enfermería de dos universidades privadas del área Metropolitana de Monterrey Nuevo León, México. El diseño del estudio es no experimental de tipo transversal descriptivo. Se utilizó una cédula de datos personales y de consumo de alcohol y tabaco y el Cuestionario de Identificación de Desórdenes por Uso de Alcohol (AUDIT. Resultados. Se identificó que predomina un tipo de consumo sensato de alcohol, seguido del dependiente y de uno dañino. En relación con el consumo de tabaco, prevalecieron los no fumadores, seguido de los fumadores experimentales, los exfumadores, los usuarios y los dependientes. Conclusión. Estos resultados permiten comprender mejor la magnitud del problema del consumo de alcohol y tabaco entre los estudiantes universitarios, específicamente entre los estudiantes de enfermería quienes serán futuros profesionales de la salud y que actuarán como educadores y promotores para la adopción de estilos de vida saludables en la población general

Modulation of Neural Activity during Guided Viewing of Visual Art.

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Herrera-Arcos, Guillermo; Tamez-Duque, Jesús; Acosta-De-Anda, Elsa Y; Kwan-Loo, Kevin; de-Alba, Mayra; Tamez-Duque, Ulises; Contreras-Vidal, Jose L; Soto, Rogelio

2017-01-01

Mobile Brain-Body Imaging (MoBI) technology was deployed to record multi-modal data from 209 participants to examine the brain's response to artistic stimuli at the Museo de Arte Contemporáneo (MARCO) in Monterrey, México. EEG signals were recorded as the subjects walked through the exhibit in guided groups of 6-8 people. Moreover, guided groups were either provided with an explanation of each art piece (Guided-E), or given no explanation (Guided-NE). The study was performed using portable Muse (InteraXon, Inc, Toronto, ON, Canada) headbands with four dry electrodes located at AF7, AF8, TP9, and TP10. Each participant performed a baseline (BL) control condition devoid of artistic stimuli and selected his/her favorite piece of art (FP) during the guided tour. In this study, we report data related to participants' demographic information and aesthetic preference as well as effects of art viewing on neural activity (EEG) in a select subgroup of 18-30 year-old subjects (Nc = 25) that generated high-quality EEG signals, on both BL and FP conditions. Dependencies on gender, sensor placement, and presence or absence of art explanation were also analyzed. After denoising, clustering of spectral EEG models was used to identify neural patterns associated with BL and FP conditions. Results indicate statistically significant suppression of beta band frequencies (15-25 Hz) in the prefrontal electrodes (AF7 and AF8) during appreciation of subjects' favorite painting, compared to the BL condition, which was significantly different from EEG responses to non-favorite paintings (NFP). No significant differences in brain activity in relation to the presence or absence of explanation during exhibit tours were found. Moreover, a frontal to posterior asymmetry in neural activity was observed, for both BL and FP conditions. These findings provide new information about frequency-related effects of preferred art viewing in brain activity, and support the view that art appreciation is

Validación de una escala de autoeficacia para la prevención del SIDA en adolescentes

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López-Rosales Fuensanta

2001-01-01

Full Text Available Objetivo. Estudiar la consistencia interna, validez y estructura factorial de la escala Self-Efficacy for AIDS (SEA-27 desarrollada en población estadounidense y adaptada a población mexicana. Material y métodos. Es un estudio correlacional, con un diseño no experimental de tipo transversal. Se hizo con una muestra aleatoria simple de 964 adolescentes tomados de 58 centros de salud públicos de Monterrey, México, en febrero de 1998. Ninguno iba a consultar por motivos relacionados con el SIDA. Se emplea la Escala de Autoeficacia de 27 elementos para Prevenir el SIDA (SEA-27 de López Rosales y colaboradores, junto con preguntas cerradas tipo Likert, dicotómicas y un cuestionario integrado por dos preguntas abiertas sobre aspectos relevantes de la conducta sexual para validar la escala. Para el estudio de SEA 27 se emplearon las pruebas U de Mann Whitney, Kolmogorov-Smirnov, alpha de Cronbach, análisis factorial de componentes principales y correlación bi-serial puntual. La validez de la escala se estudia por la correlación de Pearson con las variables numéricas, con la t de Student para muestras independientes dicotómicas y ANOVA con las politómicas. Resultados. La escala se ajustó a una distribución normal (Zk-s(Normal=1.369; p=0.047, con una media de 95.14 y una desviación estándar de 25.80. Su fiabilidad, por la alpha de Cronbach, resultó de 0.89. SEA-27 muestra una estructura tetradimensional ortogonal que explica 58.47% de la varianza. Se confirmaron en buen grado las hipótesis de validez correlacional y discriminatoria. Conclusiones. La SEA-27 es una escala fiable y válida. El texto completo en inglés de este artículo está disponible en: http://www.insp.mx/salud/index.html

The World Summit on Sustainable Development: reaffirming the centrality of health

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von Schirnding Yasmin

2005-05-01

Full Text Available Abstract The World Summit on Sustainable Development (WSSD was held in Johannesburg in 2002 to review progress since the Rio conference in 1992, and to agree a new global deal on sustainable development. Unlike its predecessor, it was primarily concerned with implementation rather than with new treaties and targets, although a number of new targets were agreed, for example one on sanitation. Failure to agree a target on renewable energy was regarded as a major disappointment of the conference. While relatively modest in its achievements, and with difficulties in achieving consensus in key areas such as energy, trade, finance and globalisation, WSSD nevertheless succeeded in placing sustainable development back on the political agenda, giving new impetus, in particular to the environment and development needs of Africa, with a strong focus on local issues like household energy, water and sanitation. Health was singled out as one of five priority areas, along with water, energy, agriculture and biodiversity, and was devoted a separate chapter in the resulting Plan of Implementation, which highlighted a range of environmental health issues as well as issues relating to health services, communicable and non-communicable diseases. A number of new partnerships were formed at WSSD, including the Healthy Environments for Children Alliance (HECA launched by WHO, which will form an important platform for implementation. The Commission on Sustainable Development has been designated main responsibility for monitoring and follow up, with its programme of work reorganised to focus on thematic clusters of issues. From the perspective of health, WSSD must be seen as a reaffirmation of the central place of health on the sustainable development agenda, and in the broader context of a process which began in Rio and was given added impetus with the Monterrey Financing for Development conference and the World Trade Organisation meeting held in Doha. Translating

Factors associated with glycemic status and ability to adapt to changing demands in people with and without type 2 diabetes mellitus: A cross-sectional study.

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Salazar-González, Bertha Cecilia; Gallegos-Cabriales, Esther C; Rivera-Castillo, Alicia; González-Cantú, Arnulfo; Gómez-Meza, Marco Vinicio; Villarreal-Pérez, Jesús Zacarías

2018-01-01

Type 2 diabetes mellitus studies focus on metabolic indicators and different self-reported lifestyle or care behaviors. Self-reported instruments involve conscious process therefore responses might not reflect reality. Meanwhile implicit responses involve automatic, unconscious processes underlying social judgments and behavior. No studies have explored the combined influence of both metabolic indicators and implicit responses on lifestyle practices in type 2 diabetes mellitus patients. The purpose was to investigate the explained variance of socio-demographic, metabolic, anthropometric, clinical, psychosocial, cognitive, and lifestyle variables on glycemic status and on the ability to adapt to changing demands in people with and without type 2 diabetes mellitus in Monterrey, Mexico. Adults with (n = 30, mean age 46.90 years old, 33.33% male) and without (n = 32, mean age: 41.69 years old, 21.87% male) type 2 diabetes mellitus were studied. Glycemic status was assessed using Bio-Rad D-10 Hemoglobin A1c Program, which uses ion-exchange high-performance chromatography. Stroop 2 test was used to assess the ability to changing demands. In participants with type 2 diabetes mellitus, less years of education, negative self-actualization, and higher levels of cholesterol and triglycerides explained more than 50% of the variance in glycemic status. In participants without type 2 diabetes mellitus, the variance (38.7%) was explained by total cholesterol, metabolic syndrome, high-density lipoprotein, and self-actualization scores; the latter in opposite direction. The ability to adapt to changing demands was explained by total cholesterol, malondialdehyde, insulin resistance, and triglycerides. In participants without type 2 diabetes mellitus, the contributing variables were metabolic syndrome and nutrition scores. Results showed significant effect on at least one of the following variables (socio-demographic, metabolic, or lifestyle subscale) on glycemic status

Un acercamiento cualitativo a la operación y eficiencia de un programa de transferencias condicionadas. El caso del Programa Oportunidades en una colonia del área metropolitana de Monterrey

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Oscar Alfonso Martínez Martínez

2010-01-01

Full Text Available La descentralización busca la optimización de las acciones del gobierno para que éstas tengan el mayor impacto en la sociedad. Bajo esta lógica se establece un binomio entre dicho concepto y los programas sociales, dentro de ellos los de transferencias condicionadas que otorgan un ingreso monetario al hogar con la finalidad de ser invertido en el capital humano de los beneficiarios. Un ejemplo es el Oportunidades de México, que en materia de descentralización busca que los enlaces municipales y comités comunitarios sean el punto de vinculación entre el gobierno federal, el local y, finalmente, con los beneficiarios, de tal forma que la información pueda fluir en ambos sentidos. En la práctica esto no siempre sucede, pues en la investigación realizada en el noreste de México se encontró un alto grado de falta de coordinación entre autoridades federales, estatales y municipales en materia de capacitación e información, repercutiendo en la eficiencia del programa. En ese mismo sentido se halló que los Comités de Promoción Comunitaria no tienen una visión clara respecto al papel que desempeñan dentro del programa. Todo ello generó un desgaste del tejido social y un bajo impacto en la inversión de capital humano al interior del hogar.

Un acercamiento cualitativo a la operación y eficiencia de un programa de transferencias condicionadas. El caso del Programa Oportunidades en una colonia del área metropolitana de Monterrey

OpenAIRE

Oscar Alfonso Martínez Martínez; Adolfo Rogelio Cogco Calderón

2010-01-01

La descentralización busca la optimización de las acciones del gobierno para que éstas tengan el mayor impacto en la sociedad. Bajo esta lógica se establece un binomio entre dicho concepto y los programas sociales, dentro de ellos los de transferencias condicionadas que otorgan un ingreso monetario al hogar con la finalidad de ser invertido en el capital humano de los beneficiarios. Un ejemplo es el Oportunidades de México, que en materia de descentralización busca que los enlaces municipales...

El ideal de belleza como construcción de marcas de reconocimiento en sociedades ocularcentristas: la construcción del cuerpo en mujeres ciegas del Área Metropolitana de Monterrey

OpenAIRE

Brenda Araceli Bustos García

2014-01-01

El objetivo de este artículo gira en torno a la pregunta: ¿Cómo construyen la imagen corporal las mujeres ciegas? ¿Se encuentran influenciadas por el discurso hegemónico del ideal de belleza? En primera instancia definimos las características de una sociedad ocularcentrista; enseguida realizamos una deconstrucción de investigaciones empíricas acerca de la construcción del cuerpo en mujeres ciegas. Finalmente presentamos nuestra propuesta de análisis, apoyándonos en la psicología n...

El ideal de belleza como construcción de marcas de reconocimiento en sociedades ocularcentristas: la construcción del cuerpo en mujeres ciegas del Área Metropolitana de Monterrey

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Brenda Araceli Bustos García

2014-12-01

Full Text Available El objetivo de este artículo gira en torno a la pregunta: ¿Cómo construyen la imagen corporal las mujeres ciegas? ¿Se encuentran influenciadas por el discurso hegemónico del ideal de belleza? En primera instancia definimos las características de una sociedad ocularcentrista; enseguida realizamos una deconstrucción de investigaciones empíricas acerca de la construcción del cuerpo en mujeres ciegas. Finalmente presentamos nuestra propuesta de análisis, apoyándonos en la psicología narrativa, desarrollamos una perspectiva que interpreta la construcción del cuerpo en mujeres ciegas como un acto narrativo a través del cualse generan marcas de reconocimiento que son utilizadas para evaluar y clasificar algo como bello y/o atractivo. En el análisis de las entrevistas realizadas encontramos que la construcción de marcas de reconocimiento presenta dos variantes: a una en la que se muestra cierta desconfianza e inclusive rechazo en las opiniones generadas mediante el uso de sentidos tales como el olfato, el tacto, etc. (b Otra en la que se construye un concepto de estética táctil. La desconfianza o aceptación de la estética táctil es generada, principalmente, por aspectos tales como: (a edad en que se perdió la vista; b ocupación en la que se desempeña; c tiempo que tiene de haber perdido la vista. Palabras clave: Descanso; I

The fate of eggs and larvae of three pelagic species, mackerel (Scomber scombrus, horse mackerel (Trachurus trachurus and sardine (Sardina pilchardus in relation to prevailing currents in the Bay of Biscay: Could they affect larval survival?

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Paula Alvarez

2012-05-01

Full Text Available The spatial distribution of eggs and larvae of three pelagic species, mackerel, horse mackerel and sardine, in the Bay of Biscay was studied in 1998, 2001 and 2004. The spatial distribution was clearly different between the years studied and corresponds quite precisely to different water circulation regimes. Mackerel and horse mackerel larvae are more affected by the prevailing currents than sardine, as their spawning grounds are located offshore, far from the shelf break where the current velocities are higher. Survival rates for mackerel and horse mackerel were higher in 2001, when the offshore larval transport was stronger. However, for sardine, the mortality rate hardly varied between years. The abundance of 25-day-old larvae, considered as an index of the survival rate, appears to be a good recruitment indicator, at least for 1998, 2001 and 2004. Our results did not support the hypothesis of Bakun (1996, which states that dispersion of early life stages towards open ocean waters should cause high larval mortality. At least under the conditions observed for the years studied, the retention of larvae offshore appears to have a positive effect on larval growth and/or survival.

Diferencias en la utilización de métodos de planificación familiar por mujeres adolescentes en Monterrey, México, según el modelo de educación utilizado

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Georgina Mayela Núñez Rocha

2005-01-01

Full Text Available Fundamento: El objetivo fue comparar la utilización de métodos de planificación familiar durante el puerperio inmediato y dos años después del parto en las mujeres adolescentes que habían seguido dos programas diferentes de intervención durante su embarazo. Métodos: Se diseñó un estudio cuasiexperimental. Se seleccionó a 62 adolescentes embarazadas que se integraron en dos grupos de intervención, el modelo PRECEDE y el de Creencias en Salud (MCS. Se aplicaron pruebas estadísticas no paramétricas y se estimaron intervalos de confianza de 95%. Resultados: El promedio de conocimiento inicial en el grupo MCS fue de 69,12 puntos (IC95% 63,27-74,97 y al final 89,71 puntos (IC95% 86,24- 93,17, mientras que el inicial del grupo PRECEDE fue de 49,39 puntos (IC 95% 42,24- 56,54 y al final de 75,25 puntos (IC 95% 71,12- 79,38. En el puerperio inmediato el 93% (IC 95% 83,5-100 de las adolescentes del grupo PRECEDE aceptaron el uso de un método de planificación familiar, similar al empleado por el grupo MCS, de 94,2 (IC 95% 86,3-100. En cuanto a la continuidad en el uso del método, es decir dos años después, el efecto de la estrategia PRECEDE fue superior al del MCS, 92% (IC 95% 82- 100 y 72% (IC 95% 56,9-87,1 respectivamente. Conclusiones: Se encontró diferencia entre modelos en lo concerniente a la utilización de métodos de planificación familiar a los 2 años. Se propone el programa PRECEDE como estrategia educativa para prevenir un segundo embarazo en mujeres adolescentes.

Health conditions in a population living near an industrial waste recycling plant in Mexico Condiciones de salud de la población vecina a una planta recicladora de residuos en México

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Horacio Tovalín Ahumada

1998-03-01

Full Text Available The present study was conducted in a population living near a recycling plant for zinc and other metallic dusts to determine whether exposures to these substances were occurring and producing adverse health effects. The plant is situated in a suburb of Monterrey, which is the third most populous city in Mexico and the second most industrialized. A cross-sectional study design was used for the investigation, which was carried out from September 1994 to November 1994. Using cluster sampling procedures, homes in two areas were selected--one exposed through proximity to the plant, and the other unexposed to serve as a control--until the desired sample size was achieved (621 individuals, with an average of five per dwelling. A specially trained psychology student administered a questionnaire to an adult member of each family, soliciting data on the presence of acute and chronic infections, complications of pregnancy, and congenital diseases among the family members. One hundred twenty-seven questionnaires were administered in the exposed population, yielding information on 596 individuals. In the unexposed population, 147 questionnaires were administered furnishing data on 743 individuals. The sex and age distributions of the two populations were similar. The unexposed population had a slightly longer average duration of residence. The most common health problems in the exposed population were irritation of the eyes and upper respiratory tract, allergies, sleep disturbances, bronchitis, excessive fatigue, skin problems, otitis, and anemia. The exposed population had significantly higher risks for skin eruptions and diseases, excessive fatigue, sleep disturbances, upper respiratory infections, otitis, bronchitis, and allergies. Exposed and unexposed women had comparable prevalences of obstetrical problems, spontaneous abortions, congenitally malformed offspring, and low birthweight. The questionnaire used to detect health problems has low sensitivity

Condiciones de salud de la población vecina a una planta recicladora de residuos en México Health conditions in a population living near a waste recycling plant in Mexico

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Horacio Tovalín Ahumada

1998-01-01

Full Text Available El presente estudio se realizó en México en una población vecina a una planta recicladora de cinc y de otros polvos metálicos ante la posibilidad de que estas sustancias entraran en contacto con la población y produjeran diferentes efectos nocivos sobre la salud. La planta se sitúa en un municipio cercano a Monterrey, que es la tercera ciudad más poblada de México y la segunda más industrializada. Se aplicó un diseño transversal comparativo para llevar a cabo la investigación, que duró de septiembre a noviembre de 1994. Mediante un muestreo por cuotas se seleccionaron viviendas en dos zonas --una zona expuesta por vecindad a la planta y otra no expuesta que sirvió de control-- hasta lograr el tamaño muestral deseado (621 individuos, a un promedio de cinco por vivienda. En cada domicilio un estudiante de psicología adiestrado aplicó un cuestionario a un familiar mayor de edad para recoger datos sobre la presencia de afecciones agudas y crónicas, trastornos del embarazo y enfermedades congénitas en los integrantes del hogar. En la población expuesta se aplicaron 127 cuestionarios, que arrojaron información sobre 596 personas, y en la población no expuesta se administraron 147, que proporcionaron datos sobre 743 personas. Las distribuciones por sexo y edad fueron semejantes en las dos poblaciones y el tiempo de residencia en la zona fue ligeramente mayor en los individuos no expuestos. Los problemas de salud más frecuentes en la población expuesta fueron irritación ocular y de vías respiratorias superiores, alergias, trastornos del sueño, bronquitis, cansancio excesivo, problemas cutáneos, otitis y anemias. Las razones de prevalencias fueron significativas en el caso de erupciones y otras enfermedades cutáneas, cansancio excesivo, trastornos del sueño, infecciones respiratorias superiores, otitis, bronquitis y alergias. Cuando se compararon los dos grupos de mujeres no se encontraron diferencias significativas en las

Alexitimia como predictor directo y mediado por la depresión en la violencia de pareja

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José Moral de la Rubia

2015-07-01

Full Text Available La investigación de la violencia de pareja se ha centrado tradicionalmente en la mujer como víctima y el hombre como agresor; no obstante, la violencia frecuentemente es recíproca. La alexitimia constituye un potencial factor de riesgo de violencia de pareja por sus características de un vínculo inseguro, un estilo pasivo de afrontamiento, un déficit de empatía y dificultades de control emocional. Además, la alexitimia se encuentra relacionada con la depresión. El artículo estudia la relación de la alexitimia con la violencia sufrida y la violencia ejercida (frecuencia y daño en hombres y mujeres con una pareja heterosexual controlada por la variable depresión. Se aplicaron el Cuestionario de Violencia Sufrida y Ejercida de Pareja (CVSE, Moral de la Rubia & Ramos Basurto, 2015, la Escala de Alexitimia de Toronto de 20 ítems (EAT-20, Bagby, Parker & Taylor, 1994, en su versión mexicana de Moral de la Rubia, 2008a y el Inventario de Depresión de Beck (2ª ed., IDB-2, Beck, Steer & Brown, 1996, en su Formato Simplificado de Aplicación, IDB-2-FSA; Moral de la Rubia, 2013 a una muestra no probabilística de 240 participantes (120 mujeres y 120 hombres en Monterrey, México. La alexitimia correlacionó más con la violencia sufrida que con la violencia ejercida, más con el daño que con la frecuencia dentro de la violencia sufrida y más con la frecuencia que con el daño dentro de la violencia ejercida. La mayoría de estas correlaciones permanecieron significativas al parcializar la depresión. En un modelo con buen ajuste en la muestra conjunta (hombres y mujeres, la alexitimia mostró un efecto significativo tanto sobre la violencia sufrida como la ejercida y este efecto fue tanto directo como indirecto con la mediación de la depresión. Concluye que la alexitimia es principalmente un factor de riesgo para sufrir violencia y en menor medida para ejercerla.

Individualized Tailor-Made Dietetic Intervention Program at Schools Enhances Eating Behaviors and Dietary Habits in Obese Hispanic Children of Low Socioeconomic Status

Science.gov (United States)

Moreno-Sànchez, Diana; Gutierrez, Norma G.; Lamadrid-Zertuche, Ana C.; Hernandez-Torre, Martin M.

2014-01-01

Hispanic children and those from low-socioeconomic status are predisposed to unhealthy eating habits and obesity. Aim. to implement an individualized, face-to-face, parent supported, and school-partnership dietetic intervention to promote healthy eating habits and decrease body mass index. Prospective school year dietetic intervention of 101 obese, Hispanic, low-socioeconomic school-age children representative of Monterrey, Mexico, consisted of anthropometrics, dietetic assessment, energy-restriction tailor-made daily menus, and parental education every three weeks. Student's t-test was used for means comparison. A significant decrease was found in body mass index percentile (96.43 ± 3.32 to 93.42 ± 8.12/P = 0.00) and energy intake/day of −755.7 kcal/day (P = 0.00). Among other energy dense foods with significant decline in servings/day and servings/week were processed meats (3.13 ± 1.43 to 2.19 ± 1.04/P = 0.00 and 5.60 ± 1.75 to 4.37 ± 2.10/P = 0.00, resp.), saturated fat (1.47 ± 1.08 to 0.78 ± 0.79/P = 0.00 and 2.19 ± 2.18 to 1.1 ± 1.36/P = 0.00), sweetened beverages (2.79 ± 1.99 to 1.42 ± 1.21 and 6.21 ± 1.72 to 3.89 ± 2.80/P = 0.00), and desserts and refined-grain bakery (1.99 ± 1.54 to 1.32 ± 1.59 and 2.85 ± 2.54 to 1.57 ± 2.20/P = 0.00). There was a significant increase in servings/day and servings/week of water (2.98 ± 2.02 to 4.91 ± 2.37 and 6.62 ± 2.03 to 6.87 ± 0.91/P = 0.00, resp.) and nutrient dense foods such as fruits (1.31 ± 0.89 to 1.66 ± 0.96 and 3.34 ± 2.24 to 4.28 ± 2.43/P = 0.00) and fish and poultry (3.76 ± 2.15 to 4.54 ± 2.25/P = 0.00). This intervention created healthy eating habits and decreased body mass index in a high risk population. Trial registration number: NCT01925976. PMID:24592170

Psychological, interpersonal, and clinical factors predicting time spent on physical activity among Mexican patients with hypertension

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Ybarra Sagarduy JL

2018-01-01

Full Text Available José Luis Ybarra Sagarduy,1 Dacia Yurima Camacho Mata,1 José Moral de la Rubia,2 Julio Alfonso Piña López,3 José Luis Masud Yunes Zárraga4 1Unit of Social Work and Human Development, Autonomous University of Tamaulipas, Ciudad Victoria, 2School of Psychology, Autonomous University of Nuevo Leon, Monterrey, 3Independent Researcher, Hermosillo, 4Institute of Health and Safety Services for State Workers, Clinic for the Study and Prevention of the Chilhood Obesity, Ciudad Victoria, Mexico Background: It is widely known that physical activity is the key to the optimal management and clinical control of hypertension.Purpose: This research was conducted to identify factors that can predict the time spent on physical activity among Mexican adults with hypertension.Methods: This cross-sectional study was conducted among 182 Mexican patients with hypertension, who completed a set of self-administered questionnaires related to personality, social support, and medical adherence and health care behaviors, body mass index, and time since the disease diagnosis. Several path analyses were performed in order to test the predictors of the study behavior.Results: Lower tolerance to frustration, more tolerance to ambiguity, more effective social support, and less time since the disease diagnosis predicted more time spent on physical activity, accounting for 13.3% of the total variance. The final model shows a good fit to the sample data (pBS =0.235, χ2/gl =1.519, Jöreskog and Sörbom’s Goodness of Fit Index =0.987, adjusted modality =0.962, Bollen’s Incremental Fit Index =0.981, Bentler-Bonett Normed Fit Index =0.946, standardized root mean square residual =0.053.Conclusion: The performance of physical activity in patients with hypertension depends on a complex set of interactions between personal, interpersonal, and clinical variables. Understanding how these factors interact might enhance the design of interdisciplinary intervention programs so

Dynamics of trace elements in shallow groundwater of an agricultural land in the northeast of Mexico

Science.gov (United States)

Mora, Abrahan; Mahlknecht, Jürgen; Hernández-Antonio, Arturo

2017-04-01

The citrus zone located in northeastern Mexico covers an area of 8000 km2 and produces 10% of the Mexican citrus production. The aquifer system of this zone constitutes the major source of water for drinking and irrigation purposes for local population and provides base flows to surface water supplied to the city of Monterrey ( 4.5 million inhabitants). Although the study area is near the recharge zones, several works have reported nitrate pollution in shallow groundwater of this agricultural area, mainly due to animal manure and human waste produced by infiltration of urban sewers and septic tanks. Thus, the goals of this work were to assess the dynamics of selected trace elements in this aquifer system and determine if the trace element content in groundwater poses a threat to the population living in the area. Thirty-nine shallow water wells were sampled in 2010. These water samples were filtered through 0,45 µm pore size membranes and preserved with nitric acid for storage. The concentrations of Cd, Cs, Cu, Mo, Pb, Rb, Si, Ti, U, Y, and Zn were measured by ICP-MS. Also, sulfate concentrations were measured by ion chromatography in unacidified samples. Principal Component Analysis (PCA) performed in the data set show five principal components (PC). PC1 includes elements derived from silicate weathering, such as Si and Ti. The relationship found between Mo and U with sulfates in PC2 indicates that both elements show a high mobility in groundwater. Indeed, the concentrations of sulfate, Mo and U are increased as groundwater moves eastward. PC3 includes the alkali trace elements (Rb and Cs), indicating that both elements could be derived from the same source of origin. PC4 represents the heavy trace elements (Cd and Pb) whereas PC5 includes divalent trace elements such as Zn and Cu. None of the water samples showed trace element concentrations higher than the guideline values for drinking water proposed by the World Health Organization, which indicates that the

Perception of the mexican public about the warning symbols of ionizing radiations; Percepcion del publico mexicano sobre los simbolos de advertencia de radiacion ionizante

Energy Technology Data Exchange (ETDEWEB)

Paredes, L. [ININ, Carretera Mexico-Toluca s/n, La Marquesa, C .P. 52750 Ocoyoacac, Estado de Mexico (Mexico); Ramos, L.; Avila, G.; Canales, G.; Altamirano, R. [Universidad Justo Sierra, Jacarandas 308, Col. Santa Maria la Rivera, 06000 Mexico D. F. (Mexico)]. e-mail: lpg@nuclear.inin.mx

2007-07-01

The perception and familiarization of the mexican public on the terms of 'ionizing radiation' and 'radioactive material' and the traditional warning symbol of ionizing radiation, it has been strongly influenced by the television series 'The Simpson' and their character 'Homero Simpson', which has been the means of communication that of agreement to the results of the anonymous survey carried out in the cities of Mexico, Guadalajara, Monterrey, Veracruz and Merida, it has treated these impact topics in the public opinion in a simple way in different chapters of the series, jointly with the medical common practice of carrying out studies of X rays to the patients and the signals placed in the access doors in the imagenology areas. A bigger percentage is reported to 70% of those interviewed that they have listened the terms of 'ionizing radiation' and 'radioactive material. The traditional symbol of warning of ionizing radiation, 12% recognizes it at first sight, the logo doesn't mean him anything, and only a small group that knows the safety color code associates the yellow color of the bottom with the message of warning-danger. For the case of the new symbol, 100% of the interviewees indicates to ignore it at first sight, however the logo stops in 95% of the cases an opinion to have a meaning, being the perception of death 68%, danger 24%, to run 8% and the red color the message of danger. Inside the public with more familiarity with terminology and the derived traditional symbol of warning of their activities in the work, they were identified the firemen. Of the analysis of the surveys it is observed that the perception of fear to the radioactive material is of 42%, continued by that of ionizing radiations with 32% of the mentions. The presented arguments are that it produces cancer 80% and it can exploit 20% for the first case and it produces cancer 100% for the second case. 98% of the public is

LAS ACCIONES DE ALTO NIVEL DE LOS EMPRENDEDORES SOCIALES

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Bernardo Amezcua

2017-10-01

Full Text Available En las últimas décadas el sistema capitalista ha sido acusado cada vez con mayor frecuencia de ser una de las principales causas de los problemas sociales y ambientales en el mundo. Una de las razones principales es el hecho de que muchas empresas centran sus esfuerzos en optimizar el rendimiento financiero a corto plazo y colocan en segundo plano el interés por el bienestar de sus clientes y el cuidado de los recursos naturales. El presente estudio utiliza la teoría de la identificación de la acción (AIT para dar respuesta a esta incógnita que nos ayude a identificar las diferencias en la valoración de acciones específicas en los negocios. Específicamente, este artículo propone que el sistema de valores del emprendedor social se asocia con valores más colectivistas (ética deontológica que los lleva a percibir sus acciones como altamente significativas y trascendentales. Se llevó a cabo una sesión de enfoque donde participaron ES de toda Latinoamérica aprovechando un congreso realizado en la ciudad de Monterrey. Adicionalmente se realizaron 10 entrevistas de profundidad con otros ES que no habían participado en la sesión antes mencionada. Los participantes son los creadores de las empresas sociales. Algunas de estas empresas tenían pocos años de haber sido creadas pero algunas tenían hasta 15 años de vida. Los participantes fueron invitados durante el congreso a participar en esta actividad de investigación que se llevaría a cabo al final del mismo. Los organismos que apoyan a los ES se beneficiarían de estos resultados al conocer las razones detrás de los comportamientos de sus asociados, con lo que podrían establecer mejores canales de comunicación y diseñar mejores programas de apoyo y reconocimiento. Así mismo, sirve a los mismos ES como una actividad de reflexión, donde aprenden a reconocer sus valores y a clarificar las razones por las que entraron y se mantienen en este tipo de emprendimiento.

Riesgo nutricional en pacientes con tuberculosis pulmonar: ¿cuestión del paciente o de los servicios de salud?

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Núñez-Rocha Georgina Mayela

2000-01-01

Full Text Available OBJETIVO: Identificar factores de riesgo nutricional en pacientes con tuberculosis pulmonar (TBP.MATERIAL Y MÉTODOS: Se seleccionaron al azar 185 pacientes con TBP atendidos en dos instituciones de salud de Monterrey, Nuevo León, México, durante 1997. Se identificaron variables antropométricas, socioeconómicas, utilización del servicio de nutrición, accesibilidad a los alimentos, efectos secundarios de drogas antifímicas, y atribución de la enfermedad a la alimentación. El plan de análisis incluyó estadística descriptiva, análisis bivariado y multivariado de regresión logística múltiple, además se estimó razón de prevalencia e intervalos de confianza de 95%. RESULTADOS: El promedio de edad fue de 42.4±19.9 años. La media de índice de masa corporal fue de 19.8±3.2 y se encontraban desnutridos 56.8% del total de los pacientes. El 26.4% de éstos fue enviado al servicio de nutrición y, únicamente, 24.3% lo utilizó. El análisis multivariado mostró como factores de riesgo para desnutrición a los efectos secundarios de las drogas antifímicas, independientemente de la edad, sexo, escolaridad, ocupación, tiempo de evolución, accesibilidad a los alimentos, atribución de la enfermedad al tipo de alimentación y utilización del servicio de nutrición (ji²=10.58; p=0.0515, r²=0.42. CONCLUSIONES: El riesgo nutricional al que se enfrenta el paciente es responsabilidad tanto de éste, por la escasa utilización que hace del servicio de nutrición, como de los servicios de salud, debido a la existencia de barreras de tipo organizacional que dificultan el acceso al servicio de nutrición. Además, la falta de accesibilidad a los alimentos y el impacto de los efectos secundarios de las drogas antifímicas justifican la necesidad de focalizar la atención en este grupo de riesgo.

Perception of the mexican public about the warning symbols of ionizing radiations

International Nuclear Information System (INIS)

Paredes, L.; Ramos, L.; Avila, G.; Canales, G.; Altamirano, R.

2007-01-01

The perception and familiarization of the mexican public on the terms of 'ionizing radiation' and 'radioactive material' and the traditional warning symbol of ionizing radiation, it has been strongly influenced by the television series 'The Simpson' and their character 'Homero Simpson', which has been the means of communication that of agreement to the results of the anonymous survey carried out in the cities of Mexico, Guadalajara, Monterrey, Veracruz and Merida, it has treated these impact topics in the public opinion in a simple way in different chapters of the series, jointly with the medical common practice of carrying out studies of X rays to the patients and the signals placed in the access doors in the imagenology areas. A bigger percentage is reported to 70% of those interviewed that they have listened the terms of 'ionizing radiation' and 'radioactive material. The traditional symbol of warning of ionizing radiation, 12% recognizes it at first sight, the logo doesn't mean him anything, and only a small group that knows the safety color code associates the yellow color of the bottom with the message of warning-danger. For the case of the new symbol, 100% of the interviewees indicates to ignore it at first sight, however the logo stops in 95% of the cases an opinion to have a meaning, being the perception of death 68%, danger 24%, to run 8% and the red color the message of danger. Inside the public with more familiarity with terminology and the derived traditional symbol of warning of their activities in the work, they were identified the firemen. Of the analysis of the surveys it is observed that the perception of fear to the radioactive material is of 42%, continued by that of ionizing radiations with 32% of the mentions. The presented arguments are that it produces cancer 80% and it can exploit 20% for the first case and it produces cancer 100% for the second case. 98% of the public is interested one in receiving bigger information on these topics and

Factores para el estudio de la relación entre el grado de control familiar y el desempeño organizacional de las MIPyMEs familiares en el Área Metropolitana de Monterrey

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Armando Pena Hinojosa

2012-07-01

Full Text Available The motors that move and drive the economies and societies of any country are the strength of the companies and might of the owners. At present, the importance of familyowned micro, small and medium sized companies is well known within the economies of the different Latin American and Caribbean countries; although, it is impossible to quantify exactly, the MSMEs are a key component in the contribution of economic growth, competitiveness, innovation, and in the generation of employment in any country; consequently, many governments and private institutions have initiated programs to promote this enterprising segment. It is not any different here in Mexico, as the above mentioned companies provide 50% of total employment and, in addition, 90% are family owned. This is where family influence or control becomes one of the important factors that have been proposed by the scientific academia as determining the organizational performance of a company. Based on this premise, the main topic of this article is to examine how the degree of family control affects the performance of said companies.

Factores para el estudio de la relación entre el grado de control familiar y el desempeño organizacional de las MIPyMEs familiares en el Área Metropolitana de Monterrey

OpenAIRE

Armando Pena Hinojosa; Joel Mendoza Gomez

2012-01-01

The motors that move and drive the economies and societies of any country are the strength of the companies and might of the owners. At present, the importance of familyowned micro, small and medium sized companies is well known within the economies of the different Latin American and Caribbean countries; although, it is impossible to quantify exactly, the MSMEs are a key component in the contribution of economic growth, competitiveness, innovation, and in the generation of employment in any ...

EVALUACIÓN POBLACIONAL DEL STOCK EXPLOTABLE DEL COMPLEJO OPISTHONEMA (PISCES: CLUPEIDAE EN EL GOLFO DE NICOYA, COSTA RICA

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Luis A. Vega Corrales

2011-07-01

Full Text Available El género Opisthonema sustenta la pesquería de sardina en Costa Rica. Esta investigación se orientó hacia la evaluación poblacional del stock explotable de esta pesquería en el Golfo de Nicoya. Las muestras mensuales fueron recolectadas desde junio del 2007 hasta mayo del 2008. Se determinó el patrón de reproducción de O. libertate y se estimaron los parámetros de crecimiento de las curvas en longitud del modelo de von Bertalanffy para O. libertate y O. medirastre. Con base en el índice gonadosomático, O. libertate desova intensamente durante la época más calurosa del año, entre febrero y mayo. La talla de primera madurez (TPM50% fue de 18.68 cm de LT. La ecuación de crecimiento de von Bertalanffy estimada para O. libertate fue: Lt= 25.9 [1–exp–1.03(t+0.13] y para O. medirastre: Lt= 32.0 [1–exp–1.10(t+0.15]. El reclutamiento máximo de la pesquería de O. libertate ocurre entre septiembre y noviembre. Esta especie muestra un índice de explotación (E de 0.65 y O. medirastre de 0.55. Se nota una mejoría en el E comparado con estimaciones anteriores. Se recomienda como medida de manejo para esta pesquería ajustar la época de veda y no incrementar el esfuerzo pesquero. The Opisthonema genus supports the sardine fishery in Costa Rica. This research was directed to population assessment of the exploitable stock of this fishery in the Golfo of Nicoya. Monthly samples were collected since June, 2007 until May, 2008. The reproductive pattern of O. libertate were determined and growth parameters of curves in the length of O. libertate and O. medirastre were estimated using the von Bertalanffy model.. Based on the gonadosomatic index, O. libertate spawn intensively during the hottest time of the year, between February and May. The size at first maturity (SFM50% was 18.68 cm T.L. The growth equation of von Bertalanffy was estimated for O. libertate: Tl= 25.9 [1–exp–1.03(t+0.13] and O. medirastre:  Tl= 32.0 [1–exp–1.10(t

Transient simulation of a solar heating system for a small-scale ethanol-water distillation plant: Thermal, environmental and economic performance

International Nuclear Information System (INIS)

Vargas-Bautista, Juan Pablo; García-Cuéllar, Alejandro Javier; Pérez-García, Santiago L.; Rivera-Solorio, Carlos I.

2017-01-01

Highlights: • Thermal simulation of a small solar ethanol distillation plant is performed. • The optimum collector area is obtained for two different thermal collectors types. • Higher solar fraction was found for parabolic trough collectors. • Economic analysis is performed for different scenarios to evaluate feasibility. - Abstract: The thermal, environmental and economic performance of a small-scale ethanol distillation system, where solar energy is used as primary energy source, was studied. Two different concentrations of ethanol at the feed stream (5 wt.% and 10 wt.%) were analysed to obtain a distillate product of 95 wt.% ethanol (hydrous ethanol). Evacuated tube solar collectors (ETC) and parabolic trough collectors (PTC) were considered for the solar heating system. A case of study for a specific geographical place (Monterrey, México) was developed herein to evaluate the solar ethanol distillation system; the results can be extended to other locations, weather conditions and operational parameters. The thermal results from the simulation showed that through an adequate selection of the solar collector area and an appropriate sizing of the different equipment of the solar distillation system, PTC represents a better option where energy savings of 80% and 71% can be achieved for 5 wt.% and 10 wt.% ethanol at the feed stream, respectively. However, the economic feasibility of the solar distillation system is achieved using ETC for a price of hydrous ethanol of 1.75 USD/L and a feed stream of 10 wt.% ethanol, reaching an internal rate of return (IRR) of 18.8% and payback period of 5.2 years. As an important technical result, selected ETC presented advantages over PTC where an average distillate product of 3.6 and 3.4 ml at 95 wt.% ethanol can be obtained per unit of solar energy (kW h) captured per area (m"2) of solar collector using 5 wt.% and 10 wt.% ethanol at the feed stream, respectively (36% more than PTC). The reduction of greenhouse gases (GHG

[The regional context of migration: the case of Tabasco].

Science.gov (United States)

Lezama, J L

1991-09-01

This work contains reflections on regional influences in determination of migratory processes, as distinct from economic and political influences at the national level. The relationship between migration and region implies discussion of the concept of regions and regional hierarchies in relation to the national level. The economic structure of a region and its influence on migration for example is related to characteristics of the same phenomenon at the national level. Migration to Mexico City and Monterrey represents a process of social change that affects all of Mexican society, both because of the regional diversity and large volume of migrants to the 2 cities and because of their importance in Mexico's economic and social development. Migration at the regional level may be determined by forces within that region or by processes at the national or even international level that are beyond local control. The particular mix of resources available in a region and the level of its development compared to other places within the nation strongly affect migratory potential. The concrete case of petroleum activity in the state of Tabasco is an example of the lack of participation at the regional level in design of investment policy. The petroleum boom of the 1960s in Tabasco produced profound economic changes in the region and caused changes in the local power structure. Particularities in the case of Tabasco included a state economy dominated by petroleum activity, deterioration in the agricultural sector accompanied by increased livestock raising, expansion of zones of population expulsion especially where livestock were most dominant, and consolidation of strong migratory flows toward the petroleum zones. External factors in the regional socioeconomic situation included the impacts generated by petroleum activity, while internal factors included the increasing importance of livestock and eclipse of agriculture even before the petroleum boom. Census and survey data

Modernización tecnológica y cambios organizacionales en la industria maquiladora

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Jorge Carrillo Viveros

1990-09-01

Full Text Available Actualmente, la importancia que representa para México la industria maquiladora de exportación (IME puede resumirse en los siguientes cuatro puntos: primero, es la segunda fuente de divisas para el país (después del petróleo; la tasa de absorción de fuerza de trabajo excede a la de los demás sectores de la economía; su crecimiento en el número de establecimientos; la complejidad y modernización que muestra en los últimos años. Bajo este panorama, se justifica la atención que se le presta a la IME ante el probable Tratado Trilateral de Acuerdo de Libre Comercio, con el que se espera continuará su expansión, por lo que se hace necesario realizar estudios que fortalezcan el aprovechamiento de oportunidades que pudiera ofrecer la IME..Es en este sentido que en este trabajo se analizan algunos aspectos relacionados con la tecnología en plantas maquiladoras, especialmente aquellas con nuevas formas de organización en el trabajo. Las hipótesis que se manejan son dos: existe una amplia y heterogénea difusión de la tecnología en la IME; existen diferencias significativas en la estructura organizativa entre plantas que utilizan nuevas tecnologías blandas o métodos de organización flexible del trabajo, y plantas de tipo más tradicional. Para la realización de este trabajo se llevó a cabo una encuesta probabilística en Ciudad Juárez, Tijuana y Monterrey.Algunas de las conclusiones a las que se llegan reflejan que la IME no sólo es importante por las divisas y empleos que genera a nivel nacional, sino también por los impactos que propicia a nivel regional. Las características actuales de la IME la definen por su dinamismo, heterogeneidad y reestructuración. Dentro de la reestructuración se observa: la difusión de procesos automatizados; los cambios en el empleo, y la proliferación de la flexibilización organizacional.En lo que se refiere a la flexibilización organizacional en la IME, los resultados de este trabajo

Quantum Fest 2016 International Conference on Quantum Phenomena, Quantum Control and Quantum Optics

International Nuclear Information System (INIS)

2017-01-01

The Quantum Fest is a periodic annual festival on Quantum Phenomena, Quantum Control and Geometry of Quantum States, organized by the Center for Research and Advanced Studies (Cinvestav by its acronym in Spanish) and Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional (UPIITA-IPN) in México City, Mexico. The aim of this meeting is to bring together students and researchers which are engaged in the subjects of the festival, from both theoretical and experimental approaches, in order to get lively discussions and to enable a closer contact between them.The Quantum Fest was celebrated for the first time in the Physics Department of Cinvestav (2010), since then it has been hosted in Cinvestav, UPIITA-IPN and the Tecnológico de Monterrey, Campus Estado de México (ITESM-CEM).The Quantum Fest 2016 is the seventh edition of the festival, it took place from October 17 to 21 in the Sala de Usos Múltiples, Edificio I of UPIITA-IPN, and was addressed to join the celebration of the first eighty years of the Instituto Politécnico Nacional as well as the first twenty years of the Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional. We would like to thank the willing of the UPIITA-IPN to offer its facilities as the venue of the festival; all its help provided to simplify the logistics and organization of the conference has been welcomed and is acknowledged.The topics addressed at the short courses of the Quantum Fest 2016 were time asymmetric quantum mechanics, quantum resonances, models of quantum field theory in metamaterials, singular potentials and self-adjoint extensions, nonclassical states of light, Hardy functions and Hilbert space operators.The Lecturers of Quantum Fest 2016 were:Manuel Gadella (Valladolid University, Spain)Maribel Loaiza (Department of Mathematics, Cinvestav, Mexico)Luis Miguel Nieto (Valladolid University, Spain)Oscar Rosas

A new species of Trachymyrmex (Hymenoptera, Formicidae) fungus-growing ant from the Sierra Madre Oriental of northeastern Mexico

Science.gov (United States)

Sánchez-Peña, Sergio R.; Chacón-Cardosa, Manuela Citlali; Canales-del-Castillo, Ricardo; Ward, Lauren; Resendez-Pérez, Diana

2017-01-01

Abstract Here we describe a new species of Trachymyrmex, T. pakawa sp. n., from the Gran Sierra Plegada range of the Sierra Madre Oriental, in the states of Coahuila and Nuevo Leon, northeastern Mexico. Trachymyrmex pakawa is a large-sized species compared to other North American Trachymyrmex. Its geographic distribution includes the piedmont of the Gran Sierra Plegada at La Estanzuela, Monterrey, as well as peripheral mountains segregated from the Sierra Madre Oriental (Cerro de las Mitras, Sierra de Zapalinamé, Cañon de San Lorenzo, Cerro de las Letras). The preferred habitats of T. pakawa include oak-pine forest at La Estanzuela, xeric oak forest at Zapalinamé and mesic Chihuahuan desert scrub with sotol (Dasylirion) at other sites. All localities are on slopes, on very rocky, shallow lithosols overlaying large boulders. This species nests under and between large boulders and rocks. It has not been observed on alluvial or better developed, deeper soils, and it is absent from sites with human activity (urban, disturbed, and landscaped areas). It is closely related to and morphologically similar to Trachymyrmex smithi. The known distribution ranges of T. pakawa and T. smithi almost overlap in Saltillo, Coahuila state. The main character that distinguishes the new species from T. smithi is longer antennal scapes in T. pakawa; also, different nesting habits (rocky slopes vs. alluvial sites or deep sand in T. smithi), and geographic distribution. Phylogenetic analysis of DNA sequences from the mitochondrial marker cytochrome c oxidase subunit I (COI) and the first intron of the F1 copy of the nuclear protein-coding gene Elongation Factor 1- α (EF1-α-F1) confirm a sister-species relationship between T. pakawa and T. smithi. Bayesian coalescent analyses indicate a divergence time of about 8.00 million years before present (95% confidence interval: 4.8–11.5 mya) between T. pakawa and T. smithi. The divergence of the lineages of T. pakawa and T. smithi could have

A new species of Trachymyrmex (Hymenoptera, Formicidae fungus-growing ant from the Sierra Madre Oriental of northeastern Mexico

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Sergio R. Sánchez-Peña

2017-10-01

Full Text Available Here we describe a new species of Trachymyrmex, T. pakawa sp. n., from the Gran Sierra Plegada range of the Sierra Madre Oriental, in the states of Coahuila and Nuevo Leon, northeastern Mexico. Trachymyrmex pakawa is a large-sized species compared to other North American Trachymyrmex. Its geographic distribution includes the piedmont of the Gran Sierra Plegada at La Estanzuela, Monterrey, as well as peripheral mountains segregated from the Sierra Madre Oriental (Cerro de las Mitras, Sierra de Zapalinamé, Cañon de San Lorenzo, Cerro de las Letras. The preferred habitats of T. pakawa include oak-pine forest at La Estanzuela, xeric oak forest at Zapalinamé and mesic Chihuahuan desert scrub with sotol (Dasylirion at other sites. All localities are on slopes, on very rocky, shallow lithosols overlaying large boulders. This species nests under and between large boulders and rocks. It has not been observed on alluvial or better developed, deeper soils, and it is absent from sites with human activity (urban, disturbed, and landscaped areas. It is closely related to and morphologically similar to Trachymyrmex smithi. The known distribution ranges of T. pakawa and T. smithi almost overlap in Saltillo, Coahuila state. The main character that distinguishes the new species from T. smithi is longer antennal scapes in T. pakawa; also, different nesting habits (rocky slopes vs. alluvial sites or deep sand in T. smithi, and geographic distribution. Phylogenetic analysis of DNA sequences from the mitochondrial marker cytochrome c oxidase subunit I (COI and the first intron of the F1 copy of the nuclear protein-coding gene Elongation Factor 1- α (EF1-α-F1 confirm a sister-species relationship between T. pakawa and T. smithi. Bayesian coalescent analyses indicate a divergence time of about 8.00 million years before present (95% confidence interval: 4.8–11.5 mya between T. pakawa and T. smithi. The divergence of the lineages of T. pakawa and T. smithi could

Individualized Tailor-Made Dietetic Intervention Program at Schools Enhances Eating Behaviors and Dietary Habits in Obese Hispanic Children of Low Socioeconomic Status

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Leticia Elizondo-Montemayor

2014-01-01

Full Text Available Hispanic children and those from low-socioeconomic status are predisposed to unhealthy eating habits and obesity. Aim. to implement an individualized, face-to-face, parent supported, and school-partnership dietetic intervention to promote healthy eating habits and decrease body mass index. Prospective school year dietetic intervention of 101 obese, Hispanic, low-socioeconomic school-age children representative of Monterrey, Mexico, consisted of anthropometrics, dietetic assessment, energy-restriction tailor-made daily menus, and parental education every three weeks. Student’s t-test was used for means comparison. A significant decrease was found in body mass index percentile (96.43±3.32 to 93.42±8.12/P=0.00 and energy intake/day of −755.7 kcal/day (P=0.00. Among other energy dense foods with significant decline in servings/day and servings/week were processed meats (3.13 ± 1.43 to 2.19 ± 1.04/P=0.00 and 5.60 ± 1.75 to 4.37 ± 2.10/P=0.00, resp., saturated fat (1.47 ± 1.08 to 0.78 ± 0.79/P=0.00 and 2.19±2.18 to 1.1±1.36/P=0.00, sweetened beverages (2.79±1.99 to 1.42±1.21 and 6.21±1.72 to 3.89±2.80/P=0.00, and desserts and refined-grain bakery (1.99±1.54 to 1.32±1.59 and 2.85 ± 2.54 to 1.57 ± 2.20/P=0.00. There was a significant increase in servings/day and servings/week of water (2.98 ± 2.02 to 4.91 ± 2.37 and 6.62 ± 2.03 to 6.87 ± 0.91/P=0.00, resp. and nutrient dense foods such as fruits (1.31 ± 0.89 to 1.66 ± 0.96 and 3.34 ± 2.24 to 4.28 ± 2.43/P=0.00 and fish and poultry (3.76 ± 2.15 to 4.54 ± 2.25/P=0.00. This intervention created healthy eating habits and decreased body mass index in a high risk population. Trial registration number: NCT01925976.

Patients' empowerment , physicians' perceptions, and achievement of therapeutic goals in patients with type 1 and type 2 diabetes mellitus in Mexico

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Lavalle-González FJ

2016-07-01

Full Text Available Fernando J Lavalle-González,1 Erwin Chiquete2 On behalf of the IDMPS-3W Collaborative Group (Mexico 1Department of Endocrinology, Hospital Universitario Dr José Eleuterio González, Monterrey, NL, 2Department of Neurology and Psychiatry, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico Background: Physicians’ perception may not parallel objective measures of therapeutic targets in patients with diabetes. This is an issue rarely addressed in the medical literature. We aimed to analyze physicians’ perception and characteristics of adequate control of patients with diabetes.Patients and methods: We studied information on physicians and their patients who participated in the third wave of the International Diabetes Management Practices Study registry in Mexico. This analysis was performed on 2,642 patients, 203 with type 1 diabetes mellitus (T1DM and 2,439 with type 2 diabetes mellitus (T2DM, treated by 200 physicians.Results: The patients perceived at target had lower hemoglobin A1c (HbA1c and fasting blood glucose than those considered not at target. However, overestimation of the frequency of patients with HbA1c <7% was 41.5% in patients with T1DM and 31.7% in patients with T2DM (underestimation: 2.8% and 8.0%, respectively. The agreement between the physicians’ perception and the class of HbA1c was suboptimal (κ: 0.612. Diabetologists and endocrinologists tested HbA1c more frequently than primary care practitioners, internists, or cardiologists; however, no differences were observed in mean HbA1c, for both T1DM (8.4% vs 7.2%, P=0.42 and T2DM (8.03% vs 8.01%, P=0.87 patients. Nevertheless, insulin users perceived at target, who practiced self-monitoring and self-adjustment of insulin, had a lower mean HbA1c than patients without these characteristics (mean HbA1c in T1DM: 6.8% vs 9.6%, respectively; mean HbA1c in T2DM: 7.0% vs 10.1%, respectively.Conclusion: Although there is a significant

Condiciones de salud de la población vecina a una planta recicladora de residuos en México

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Horacio Tovalín Ahumada

1998-01-01

Full Text Available El presente estudio se realizó en México en una población vecina a una planta recicladora de cinc y de otros polvos metálicos ante la posibilidad de que estas sustancias entraran en contacto con la población y produjeran diferentes efectos nocivos sobre la salud. La planta se sitúa en un municipio cercano a Monterrey, que es la tercera ciudad más poblada de México y la segunda más industrializada. Se aplicó un diseño transversal comparativo para llevar a cabo la investigación, que duró de septiembre a noviembre de 1994. Mediante un muestreo por cuotas se seleccionaron viviendas en dos zonas --una zona expuesta por vecindad a la planta y otra no expuesta que sirvió de control-- hasta lograr el tamaño muestral deseado (621 individuos, a un promedio de cinco por vivienda. En cada domicilio un estudiante de psicología adiestrado aplicó un cuestionario a un familiar mayor de edad para recoger datos sobre la presencia de afecciones agudas y crónicas, trastornos del embarazo y enfermedades congénitas en los integrantes del hogar. En la población expuesta se aplicaron 127 cuestionarios, que arrojaron información sobre 596 personas, y en la población no expuesta se administraron 147, que proporcionaron datos sobre 743 personas. Las distribuciones por sexo y edad fueron semejantes en las dos poblaciones y el tiempo de residencia en la zona fue ligeramente mayor en los individuos no expuestos. Los problemas de salud más frecuentes en la población expuesta fueron irritación ocular y de vías respiratorias superiores, alergias, trastornos del sueño, bronquitis, cansancio excesivo, problemas cutáneos, otitis y anemias. Las razones de prevalencias fueron significativas en el caso de erupciones y otras enfermedades cutáneas, cansancio excesivo, trastornos del sueño, infecciones respiratorias superiores, otitis, bronquitis y alergias. Cuando se compararon los dos grupos de mujeres no se encontraron diferencias significativas en las

Distribución del ictioplancton en la Patagonia austral de Chile: potenciales efectos del deshielo de Campos de Hielo Sur Ichthyoplankton distribution in South Patagonia, Chile: potential effects of ice melting from the Southern Ice Field

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Mauricio F Landaeta

2011-07-01

Full Text Available Durante octubre-noviembre de 2009 se realizó un crucero oceanográfico entre 50 y 53°S de Chile austral, en las cercanías del glaciar Campos de Hielo Sur. Las estaciones cercanas al glaciar presentaron baja temperatura (1-3°C y salinidad ( 0,1 ciclos s-1. Los principales taxa del ictioplancton fueron huevos y larvas de sardina fueguina Sprattus fuegensis, pez hacha Maurolicus parvipinnis, Macrouridae y merluza austral Merluccius australis. El desove principal de S. fuegensis (~ 8000 huevos 10 m-2 ocurrió en zonas mezcladas de la plataforma continental adyacente, mientras que el desove de M. parvipinnis ocurrió en canales intermedios asociado a valores intermedios de estabilidad (N~0,06 ciclos s-1. Se observó una nula o baja abundancia de huevos y larvas de peces en las cercanías del glaciar, y la abundancia de huevos de M. parvipinnis estuvo relacionada positivamente con la temperatura y salinidad de la columna de agua y negativamente con la estabilidad de la columna de agua. Además, hubo una relación negativa entre la densidad del agua de mar y el diámetro de los huevos de S. fuegensis. La relación entre deshielo e ictioplancton podría tener consecuencias en el transporte advectivo y mortalidad masiva de huevos y larvas de peces y el acople pelágico-bentónico en la Patagonia austral de Chile. Como el cambio climático global ha incrementado los deshielos de glaciares en latitudes altas, y el aumento del ingreso de aguas de baja temperatura y salinidad podría tener consecuencias en el ictioplancton de la Patagonia chilena.In October-November 2009, an oceanographic survey was carried out between 50 and 53°S off southern Chile, near the Southern Ice Field. The stations near the glacier showed low temperatures (1-3°C and salinity ( 0.1 cycles s-1. Main ichthyoplankton taxa were eggs and larvae of southern sprat Sprattus fuegensis, lightfish Maurolicus parvipinnis, Macrouridae, and southern hake Merluccius australis. The main

Desarrollo de un método analítico para la cuantificación de acrilamida en tostadas de tortillas de maíz procedentes de Monterrey (México) y estimación de la exposición dietética

OpenAIRE

Santos Lara, Mirna Elizabeth

2017-01-01

La acrilamida es una molécula muy polar altamente soluble en agua. Es un compuesto neurotóxico, genotóxico y carcinógeno, catalogado como probable carcinógeno para humanos por la Agencia Internacional de Investigación en Cáncer. En el 2002 se reportó presencia de niveles muy altos de acrilamida en alimentos ricos en carbohidratos cuando son sometidos al proceso de cocción por horneado, fritura, tostados o asado por encima de 120 °C. Este hallazgo generó gran preocupación a nivel mundial por e...

Desarrollo de un método analítico para la cuantificación de acrilamida en tostadas de tortillas de maíz procedentes de Monterrey (México) y estimación de la exposición dietética /

OpenAIRE

Santos Lara, Mirna Elizabeth,

2017-01-01

Departament responsable de la tesi: Departament de Ciència Animal i dels Aliments. La acrilamida es una molécula muy polar altamente soluble en agua. Es un compuesto neurotóxico, genotóxico y carcinógeno, catalogado como probable carcinógeno para humanos por la Agencia Internacional de Investigación en Cáncer. En el 2002 se reportó presencia de niveles muy altos de acrilamida en alimentos ricos en carbohidratos cuando son sometidos al proceso de cocción por horneado, fritura, tostados o as...

[Women with high fertility in Mexico: orientations for a population policy].

Science.gov (United States)

Lopez, E

1989-01-01

The characteristics and correlates of high fertility women in Mexico were assessed for different age and residential groups with data from the National Demographic Survey of 1982. This survey included information on rural, urban and metropolitan Mexican women aged 15-49 years who had ever been in union. Rural areas were defined as those with fewer than 20,000 inhabitants. Metropolitan areas were Guadalajara, Monterrey, and Mexico City. High fertility was defined for the purpose of this study as at least 2 live births for women 15-19, 3 for women 20-24, 4 for those 25-29, 5 for those 30-34, 6 for those 35-39, and 7 for those 40-49. According to this definition about 40% of Mexican women are high fertility, with proportions ranging from about 1/3 of those 20-29 to half of those 35-49 years old. High fertility is about twice as common in women 15-19 in rural areas as in urban and metropolitan areas of Mexico. 10% of rural women aged 20-24 already have 5 children, compared to less than 1% of metropolitan women and under 3% of women in other urban areas. By age 45-49, 31% of rural women, 20% of other urban women, and 15% of metropolitan women have 10 or more children. 13% in all areas have 2 or 3. Large proportions of rural women in all age groups are high fertility, with the difference especially marked at young ages. The data on contraceptive usage indicate that high fertility women are among the increasing numbers of Mexican women attempting to control their family size. 10% of high fertility women in rural areas are sterilized and another 10% use oral contraceptives. Injectables and traditional methods share 3rd place. IUDs are almost nonexistent in rural areas. In urban and metropolitan zones about 1/4 of high fertility women have been sterilized. About 10% use pills. Traditional methods and IUDs are in 3rd place for urban women while injectables occupy 3rd place for metropolitan women. Except among women 30-34, about 70% of sterilizations in rural areas are in

Ecophysiological behavior of Caquetaia kraussii (Steindachner, 1878 (Pisces: Cichlidae exposed to different temperatures and salinities

Directory of Open Access Journals (Sweden)

M.I. Segnini de Bravo

2001-03-01

Full Text Available Tropical river sardine, Caquetaia kraussii, captured from La Aguá lagoon (Sucre State, Venezuela were acclimatized for four weeks at 22, 24, 30 and 32ºC and at 0, 5, 10, 15 and 17 ‰ salinity. To evaluate effects of thermal response to acclimatization level, the fish were transferred suddenly from lower temperatures (22 and 24ºC to higher ones (32 and 30ºC respectively. Then thermal resistance time was measured at the lethal temperature of 40.9ºC for 30 days. We considered that acclimatization process completed when resistance time was stabilized at the new temperature regime. For the saline effect, the concentrations of sodium and potassium were measured in the tissues at each treatment: gills, white muscle, gut and heart. The results showed that thermal tolerance increased rapidly in 3 h with a 6ºC rise in temperature (from 24 to 30ºC and in 24 h with a 10ºC rise (22 to 32ºC. With decreasing temperatures, the acclimatization level reached its lowest in 11 days with a 6ºC decreases (from 30 to 24ºC and in 14 days with a 10ºC decrease (32 to 22ºC. Caquetaia kraussii regulates as much sodium as potassium in gills and white muscle tissues at all salinity levels tested; however, gut and heart tissues showed significantly different regulations among salinities examined.La sardina tropical de río, Caquetaia kraussii, capturada en la laguna La Aguá (Estado Sucre, Venezuela fue aclimatada durante cuatro semanas a la temperatura de 22, 24, 30 y 32ºC y a 0, 5, 10, 15 y 17 ‰ de salinidad. Para evaluar los efectos de respuestas térmicas a los niveles de aclimatación, los peces fueron transferidos abruptamente desde las temperaturas bajas (22 y 24ºC hasta las altas (32 y 30ºC respectivamente. Se midió entonces la resistencia térmica a la temperatura letal de 40.9ºC durante 30 días. Se consideró que los peces habían alcanzado completamente su aclimatación cuando se estabilizaba al nuevo régimen de temperatura. Para el efecto

Sondeo ecológico rápido de las comunidades de peces tropicales en un área de explotación minera en Costa Rica

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Mario Espinoza Mendiola

2008-12-01

Full Text Available El impacto de las minerías de oro ha generado una gran preocupación por el deterioro de los hábitats acuáticos y la fragmentación de los sistemas naturales. Las perturbaciones antropogénicas sobre la estructura y heterogeneidad del sistema pueden influir en la estabilidad de las comunidades acuáticas. Sondeos ecológicos rápidos (1996, 2002, 2007 fueron empleados para determinar la estructura, composición y distribución de las comunidades de peces tropicales en varios ríos y quebradas del área de una minería de oro en el Cerro Crucitas, Costa Rica. Además, la composición de especies y abundancia relativa se relacionó con la estructura del hábitat. Se registró un total de 35 especies, de las cuales la sardina Astyanax aeneus (Characidae y la olomina Alfaro cultratus (Poeciliidae fueron las especies más abundantes (71%. La mayor riqueza de especies se observó en el Caño Crucitas (s = 19 y la quebrada Minas (s = 18. Se encontró una gran variación en la estructura y composición de las comunidades de peces, principalmente, en el río Infiernillo y Minas (λ = 0.0, F132, 66 = 2.24, p Rapid ecological assessment of tropical fish communities in a gold mine area of Costa Rica. Gold mining impacts have generated a great concern regarding aquatic systems and habitat fragmentation. Anthropogenic disturbances on the structure and heterogeneity of a system can have an important effect on aquatic community stability. Ecological rapid assessments (1996, 2002, and 2007 were employed to determine the structure, composition and distribution of tropical fish communities in several rivers and smaller creeks from a gold mining area in Cerro Crucitas, Costa Rica. In addition, species composition and relative abundance were related with habitat structure. A total of 35 species were registered, among which sardine Astyanax aeneus (Characidae and livebearer Alfaro cultratus (Poeciliidae were the most abundant fish (71%. The highest species

Risk factors of breast cancer in Mexican women Factores de riesco de cáncer de mama en mujeres mexicanas

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Ana Laura Calderón-Garcidueñas

2000-02-01

Full Text Available OBJECTIVE: To investigate the association between family history (FH of neoplasia, gyneco-obstetric factors and breast cancer (BC in a case--control study. In cases, to analyze those variables in relation with early onset of BC, the manner of detection (self-examination, prompted by pain, or casual, the size of tumor, and the elapsed time to seek medical attention. MATERIAL AND METHODS: Data from 151 prevalent BC cases and 235 age-matched controls were analyzed by multiple logistic regression, to assess the influence of BC risk factors. RESULTS: Ten per cent of patients and 1% of controls had first-degree relatives (FDR with BC. Family history of FDR with BC (OR, 11.2; 95% CI 2.42-51.92 or with gastric or pancreatic cancer (OR, 17.7; 95% CI 2.2-142.6 was associated with BC risk. Breastfeeding at or under 25 years of age was protective against BC (OR, 0.40; 95% CI 0.24-0.66. The manner of tumor detection did not influence its size at the time of diagnosis. CONCLUSIONS: Our study confirms that FH of BC and/or of gastric or pancreatic carcinoma are risk factors for BC, while lactation at 25 years of age or earlier is protective.OBJETIVO: Investigar la asociación entre la historia familiar de neoplasias, factores ginecobstétricos y cáncer mamario (CM en un estudio de casos y controles. Además, en los casos, estudiar estas variables en relación con inicio temprano del cáncer, forma de detección (autoexamen, exploración individual por dolor o casual, tamaño del tumor. MATERIAL E MÉTODOS: Entre enero y marzo de 1997 se estudiaron 151 casos prevalentes de CM y 235 controles pareados por edad provenientes del Hospital de Especialidades del Centro Médico del Noreste, Instituto Mexicano del Seguro Social, o del Hospital Universitario de la Universidad Autónoma de Nuevo León, ambos localizados en Monterrey, México. Los factores de riesgo se analizaron con regresión logística múltiple. RESULTADOS: Diez por ciento de casos y 1% de controles

Early Warning of Heat/Cold Waves as a Smart City Subsystem: A Retrospective Case Study of Non-anticipative Analog methodology

Directory of Open Access Journals (Sweden)

Dmytro Zubov

2015-12-01

validation, respectively. Initially, the sum of the values at two different locations (minus corresponding expectation values is calculated with lead-time from 14 to 365 days on summation interval of length from 1 to 365 days. Objective function defines the distribution based on two input datasets with appropriate lead-time and summation interval, which have maximum (or minimum sum compared with the rest of data four times at least (with a minimum time difference of at least 30 days when extreme event occurs on the learning sample. Specific extreme events at Ronald Reagan Washington National Airport were thus predicted on the validation sample, based on rules referring to events in earlier years. Some extremes are specifically predicted (up to 26.3% of all extremes. The methodology has 100% forecast accuracy with respect to the sign of predicted and actual values. Nowadays, the smart city project is developed at School of Engineering and Sciences (San Luis Potosi, Tecnológico de Monterrey. The early warning of heat/cold waves as well as technical aspect (remote control with Arduino Ethernet Shield and virtual power plant with solar energy are emphasized are the focus of the Internet of Things project.

Potential Opportunities for Investment in Space Technologies in Latin-America: a Case for Mexico

Science.gov (United States)

Sanchez, G.

2002-01-01

periods of time required for manufacturing, assembling and testing. Evidently, such and endeavor requires a successful transfer of technology as well as many other considerations. In 1997 Mexico signed a Free Trade Agreement with the European Union and in 2000 a similar agreement with Israel. As of today, Mexico has trade agreements with USA, Canada, and many Latin-American countries. Additionally, some important companies of the aerospace industry met recently in Monterrey, Mexico with the purpose of evaluating whether investment in manufacturing plants for aircraft parts was feasible. A logical judgement indicates that the high rates that have to be paid to US workers and the small tax restrictions in the commercial activities between the two countries make it very attractive to start such operations in Mexico. Although USA and Canada could be, apparently, the most benefited countries with spacecraft assembly and manufacturing outside their territories, it will also make sense for many European countries if low transportation costs are obtainable. On the other hand, there are a number of factors to consider before attempting serious investment. Just to name a few, the transfer of sensitive technologies, security of the long-term investments, potential local investors, political issues, legal considerations, etc; are topics that have to be taken into account by interested enterprises. This paper analyzes most of these topics trying to derive a broad scenario for potential investors, and to serve as the frame of a future business plan.

Riparian leaf litter processing by benthic macroinvertebrates in a woodland stream of central Chile Procesamiento de detritus ripariano por macroinvertebrados bentónicos en un estero boscoso de Chile central

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CLAUDIO VALDOVINOS

2001-06-01

Full Text Available Leaf litter input from riparian landscapes has been identified as both a major energy flow to stream ecosystems and as a food source for stream macroinvertebrates. In riparian landscapes of woodland streams of central Chile, the native deciduous hardwoods are being artificially replaced by exotic coniferous trees at a large spatial scale. It is suggested that this process has a significant impact on the stream communities of central Chile. Today, exotic plantations occur throughout central Chile, with Pinus radiata (D. Don (Monterrey pine accounting for about 80 % of the more than 1,800,000 ha of exotic forests. The objective of this paper was to analyze the effect of the litter beds of a dominant native species (Nothofagus pumilio and an exotic species (P. radiata on the detritus processing carried out by benthic macroinvertebrates, in an experimental catchment of central Chile (Rucúe Creek; 36° 26'00" S, 71° 35'40" W. Results revealed that processing rates of native leaf packs are higher than rates of coniferous leaf packs, suggesting that the replacement of the native hardwoods by exotic coniferous riparian flora has an important impact on the stream energy flow in central Chile. The decay rate coefficients (k were 0.0072 for N. pumilio, and 0.0027 for P. radiata. The greater abundance and biomass of shredders per gram of leaf pack of native Nothofagus would explain the differences in leaf processing rates, especially through the activity of two Plecoptera Gripopterygidae, Limnoperla jaffueli and Antarctoperla michaelseniLa entrada de detritus foliar procedente de áreas riparianas ha sido reconocido como un componente importante en la energética de ecosistemas fluviales y como fuente de alimento de macroinvertebrados acuáticos. En áreas riparianas de esteros boscosos de Chile central los componentes nativos caducifolios están siendo artificialmente reemplazados a gran escala por coníferas exóticas, sugiriendo que este proceso tiene

Multicity study of air pollution and mortality in Latin America (the ESCALA study).

Science.gov (United States)

Romieu, Isabelle; Gouveia, Nelson; Cifuentes, Luis A; de Leon, Antonio Ponce; Junger, Washington; Vera, Jeanette; Strappa, Valentina; Hurtado-Díaz, Magali; Miranda-Soberanis, Victor; Rojas-Bracho, Leonora; Carbajal-Arroyo, Luz; Tzintzun-Cervantes, Guadalupe

2012-10-01

concentration of O3. Most of the results for PM10 were positive and statistically significant, showing an increased risk of mortality with increased ambient concentrations. Results for O3 also showed a statistically significant increase in mortality in the cities with available data. With the distributed lag model, DLM 0-3, PM10 ambient concentrations were associated with an increased risk of mortality in all cities except Concepci6n and Temuco. In Mexico City and Santiago the RPC and 95% CIs were 1.02% (0.87 to 1.17) and 0.48% (0.35 to 0.61), respectively. PM10 was also significantly associated with increased mortality from cardiopulmonary, respiratory, cardiovascular, cerebrovascular-stroke, and chronic obstructive lung diseases (COPD) in most cities. The few nonsignificant effects generally were observed in the smallest cities (Concepción, Temuco, and Toluca). The percentage increases in mortality associated with ambient O3 concentrations were smaller than for those associated with PM10. All-natural-cause mortality was significantly related to O3 in Mexico City, Monterrey, São Paulo and Rio de Janeiro. Increased mortality risks for some specific causes were also observed in these cities and in Santiago. In the analyses stratified by season, different patterns in mortality and O3 were observed for cold and warm seasons. Risk estimates for the warm season were larger and significant for several causes of death in São Paulo and Rio de Janeiro. Risk estimates for the cold season were larger and significant for some causes of death in Mexico City, Monterrey, and Toluca. In an analysis stratified by SES, the all-natural-cause mortality risk in Mexico City was larger for people with a medium SES; however we observed that the risk of mortality related to respiratory causes was larger among people with a low SES, while the risk of mortality related to cardiovascular and cerebrovascular-stroke causes was larger among people with medium or high SES. In São Paulo, the all

Methodology for the electric energy distribution systems planning of small and rural zones of Comision Federal de Electricidad; Metodologia para la planeacion de sistemas de distribucion de energia electrica de zonas pequenas y rurales de Comision Federal de Electricidad

Energy Technology Data Exchange (ETDEWEB)

Ochoa Gomez, Miguel Armando

2008-12-15

The 13 Distribution Divisions in which Comision Federal de Electricidad (CFE) has administratively and technically structured the electric energy distribution in the attended territory it has to take care of, are also constituted by a total of 120 of Distribution Zones, classified according to the product of their number of clients, by their volume of annual sales, in medium and low tension, as zones type I, II and III. Examples of zones type III are the Guadalajara Zone and the Metropolitan Zone North Monterrey, East and West (metropolis), type II are predominantly urban zones such as Queretaro and Tepic, and type I is predominantly rural such as the Zapotlan Zones and Los Altos, in the state of Jalisco. Because of the cost and number of facilities that are authorized for their construction in the Distribution Rural Zones (Type I), one must be assured that these works are really the necessary ones to satisfy the demand of power within the quality commitments and with the best economy in the time. Otherwise, a great possibility exists of constructing expensive facilities and that little will help to solve the distribution system problems. Although annually reviews and updates are made of the Budget of Investments of Operation (PIO), and the Work Program of Investment of Electric Sector (POISE), the case that has occurred sometimes is that facilities are constructed where all the passages of the Planning Process were not applied or that the analysis was not sufficient, being very probable that some or several of the following types of errors have been committed: a) The allocation of the processes to facilities that are not necessary in the short term. b) Constructing a non-useful work or of little usefulness causes that facilities with greater yield are not constructed. c) The priority of works is not the most adequate. d) Not to have a long term vision so that the facilities that are constructed in the short term are useful in the long term plan. e) Some facilities

No Need to Wait for the Clean Air Dividend

Science.gov (United States)

Shindell, Drew

2012-01-01

precursor is methane, which is also a powerful greenhouse gas in its own right. Control measures include reducing leaks from natural gas pipelines and storage tanks, and capturing it from coal, gas and oil extraction, landfills and wastewater treatment plants. Aeration of rice paddies and manure management can also reduce methane releases. Captured methane can often be sold or turned into power. In Monterrey, Mexico, for example, electricity generated from methane collected from the city landfill powers the public transportation system. So such measures can be beneficial even when ignoring the health and climate effects, as they can contribute to energy security and often pay for themselves. According to calculations by me and my colleagues, phasing in all these measures over the next 20 years would reduce global warming by about 0.5 degC in 2050, half of the projected increase between now and then (Science, vol 335, p 183). Regional benefits would be even greater, as black carbon disrupts rainfall patterns and magnifies warming and melting of snow and ice in parts of the world including the Arctic and the Himalayas. On top of the climate benefits, cutting black carbon and ozone would prevent over 3 million premature deaths from air pollution, and increase yields of staple crops by roughly 50 million tonnes a year. Improved cooking stoves would also decrease the demand for firewood in the developing world, reducing deforestation and freeing up time for those who collect wood - primarily women and children - to pursue other activities such as education. Similarly, improved brick kilns now being used in parts of Latin America and Asia require half as much fuel as traditional ones and are less time-intensive for the operators. This means that in addition to their environmental benefits, these measures can contribute to sustainable and human development. Tackling black carbon and methane is clearly a great idea, so why hasn't it been done already? There are many barriers. The

Using of Marketing Communication for Distance Education Institutions

Directory of Open Access Journals (Sweden)

R. Ayhan YILMAZ

2005-04-01

mega-universities in the world today and their enrolment figures clearly show they have provided increased access to higher education. Table: 1Mega-Universities of the World. Here is another list of all the mega-universities in the world. (Visited 3 rd , March, 2005,http://www.absoluteastronomy.com/encyclopedia/m/me/mega_university.htm Allama Iqbal University, Pakistan Anadolu University, Turkey, Athabasca University, Athabacsa , Canada Bangladesh Open University, Bangladesh China Central Radio and TV University, City College of San Francisco, United States Fern University, (FernUniversität, Germany, Indira Gandhi National Open University, India Indonesian Open Learning University (Universitas Terbuka, Indonesia Instituto Tecnologico y de Estudios Superiores de Monterrey, Mexico Korea National Open University, South Korea National Distance Learning Center (Centre National d'Enseignement à Distance - CNED, France National Distance Learning University (Universidad Nacional de Educación a Distancia – UNED, Spain Open University, United Kingdom Payame Noor University, Iran Sukhothai Thammathirat Open University, Thailand Universidad Nacional Autonoma de Mexico, Mexico University of Maryland University Colleg, United States University of Phoenix, United States University of South Africa, South Africa . CHANGING ENVIRONMENT OF DISTANCE EDUCATIONIn the last 20 years, with the advancement in technology, independent study has become more accessible for distance education students. Modern communication technologies can easily link educational institutions to homes, work-sites, and community centers, and made adult education and lifelong learning matters of national policy (Nasseh, 1997 Distance education is used in a variety of settings and for a broad range of purposes. Universities use it to increase the number of students who have access to higher education; companies use it to upgrade their workers' skills and keep them abreast of rapidly advancing technologies