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Sample records for sur mexico electronic

  1. Oligocene cetaceans from Baja California Sur, Mexico

    OpenAIRE

    Hernández Cisneros, Atzcalli Ehécatl; González Barba, Gerardo; Fordyce, Robert Ewan

    2017-01-01

    Abstract Baja California Sur has an important Cenozoic marine fossil record which includes diverse but poorly known Oligocene cetaceans from Mexico. Here we review the cetacean fossil record including new observations from materials that elucidate the evolution of the Neoceti in the Pacific basin. Fossils were collected from outcrops of the El Cien Formation (Oligocene-Early Miocene) and from San Gregorio Formation (Late Oligocene). The specimens belong to the paleontological collection of Mu...

  2. Effets des electrons secondaires sur l'ADN

    Science.gov (United States)

    Boudaiffa, Badia

    Les interactions des electrons de basse energie (EBE) representent un element important en sciences des radiations, particulierement, les sequences se produisant immediatement apres l'interaction de la radiation ionisante avec le milieu biologique. Il est bien connu que lorsque ces radiations deposent leur energie dans la cellule, elles produisent un grand nombre d'electrons secondaires (4 x 104/MeV), qui sont crees le long de la trace avec des energies cinetiques initiales bien inferieures a 20 eV. Cependant, il n'y a jamais eu de mesures directes demontrant l'interaction de ces electrons de tres basse energie avec l'ADN, du principalement aux difficultes experimentales imposees par la complexite du milieu biologique. Dans notre laboratoire, les dernieres annees ont ete consacrees a l'etude des phenomenes fondamentaux induits par impact des EBE sur differentes molecules simples (e.g., N2, CO, O2, H2O, NO, C2H 4, C6H6, C2H12) et quelques molecules complexes dans leur phase solide. D'autres travaux effectues recemment sur des bases de l'ADN et des oligonucleotides ont montre que les EBE produisent des bris moleculaires sur les biomolecules. Ces travaux nous ont permis d'elaborer des techniques pour mettre en evidence et comprendre les interactions fondamentales des EBE avec des molecules d'interet biologique, afin d'atteindre notre objectif majeur d'etudier l'effet direct de ces particules sur la molecule d'ADN. Les techniques de sciences des surfaces developpees et utilisees dans les etudes precitees peuvent etre etendues et combinees avec des methodes classiques de biologie pour etudier les dommages de l'ADN induits par l'impact des EBE. Nos experiences ont montre l'efficacite des electrons de 3--20 eV a induire des coupures simple et double brins dans l'ADN. Pour des energies inferieures a 15 eV, ces coupures sont induites par la localisation temporaire d'un electron sur une unite moleculaire de l'ADN, ce qui engendre la formation d'un ion negatif transitoire

  3. Metal concentrations in demersal fish species from Santa Maria Bay, Baja California Sur, Mexico (Pacific coast).

    Science.gov (United States)

    Jonathan, M P; Aurioles-Gamboa, David; Villegas, Lorena Elizabeth Campos; Bohórquez-Herrera, Jimena; Hernández-Camacho, Claudia J; Sujitha, S B

    2015-10-15

    Concentrations of 11 trace metals (Fe, Mn, Cr, Cu, Ni, Co, Pb, Zn, Cd, As, Hg) in 40 fish species from Santa Maria Bay, Baja California Sur, Mexico, the strategically important area for marine mammals and organisms were analyzed. Based on their concentrations the ranking of metals Fe>Zn>Ni>Cr>Mn>Pb>Cu>Co>As>Cd>Hg suggests that organism size, metabolism and feeding habits are correlated with metal concentrations. Local geological formations affect the concentrations of different metals in the aquatic environment and are subsequently transferred to fishes. The correlation analysis suggests that metabolism and nurturing habits impact the concentration of metals. Concentrations of Fe and Mn appear to be influenced by scavenging and absorption processes, which vary by species. The considerable variability in the metal concentrations obtained in different species underscores the importance of regular monitoring. Copyright © 2015 Elsevier Ltd. All rights reserved.

  4. Experiential environmental learning: A case study of innovative pedagogy in Baja Sur, Mexico

    Science.gov (United States)

    Schneller, Andrew Jon

    This mixed methods case study describes an innovative two-semester middle school environmental learning course that departs from traditional Mexican expository pedagogy through the incorporation of experiential and service learning. This research takes place in a small middle school in Pescadero, Baja California Sur, Mexico. The research approach utilized in the study adds to the handful of studies in this cross-disciplinary field by employing quantitative methodologies to measure course outcomes on student environmental knowledge, perceptions, and actions, while simultaneously qualitatively describing the behavioral, educational, environmental, and social experiences of students. This research employs Dewey's theories of experience---as well as those of more contemporary authenticity theorists---in order to identify the philosophies that advocate incorporating experiential pedagogy within the curriculum. Implications for Mexican educational policy, practical pedagogical applications, and theory are discussed.

  5. Characteristics regarding the consumer of giant squid from Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Liliana Enriqueta Montaño Méndez

    2015-01-01

    Full Text Available The catch of the giant squid (Dosidicus gigas, represents de second fishing activity most important in volume in Baja California Sur, Mexico; is an essential specie not only at the state level but at the pacific and even the national level. Mexico occupies in the world the eight level in the production of squid, but the national consumption, even though the low price of the product and the high nutritional level, is approximately 0.53 kg per year, very low compared to countries like Japan, Korea and Spain (average consumption per capita is of 3.5 kg . In this context, the objective of this article is to caracterize the sudcalifornia consumer preference; determine the buying habits and the consumption; and also to establish the market areas of the squid in Baja California Sur, which allows the introduction of actions for its commercialization, in order to strengthen the market of this product and its general activity. This is why in 2012 a questioner of 1066 consumers was distribute around the five counties of the state, according to the population density. The results indicate that the principal motive why there is not consumption is the difficulty to find places where to buy it, together with the problems of cooking it. Also, it can be seen the high level of ignorance the consumer has regarding the nutritional level this food has. For this reason, future strategies for the commercialization must be focus on better distribution and new form of presenting this product which facilitates its preparation and consumption, and at the same time create campaign which increase awareness of the nutrition level this product has.

  6. AUTOCHTHONOUS BIOFACIES IN THE PLIOCENE LORETO BASIN, BAJA CALIFORNIA SUR, MEXICO

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    MICHELE PIAZZA

    1998-07-01

    Full Text Available The present paper examines the molluscan and/or echinoid assemblages recovered from two lithostratigraphic units (Piedras Rodadas Sandstone and Arroyo de Arce Norte Sandstone outcropping in the Pliocene Loreto Basin, Baja California Sur, Mexico. Ten biofacies have been identified, i.e. Trachycardium procerum-Trachycardium senticosum Biofacies, Chione compta-Transennella modesta Biofacies, Laevicardium elenense-Chione kelletii Biofacies, Xenophora sp. 1-Strombus subgracilior Biofacies, Crassostrea californica osunai Biofacies, Myrakeena angelica Biofacies, Vermetid-Nodipecten Biofacies, Argopecten abietis abietis Biofacies, Aequipecten dallasi Biofacies and Encope Biofacies. The first four biofacies have been defined on the basis of statistical analyses (cluster analysis, MDS. The other six, which are monospecific or definitely low-diversity, were already identified during field work. The deduced paleoecological bearing of biofacies, largely relying upon the comparison to their closest modern counterparts, provides the basis for the paleoenvironmental reconstruction. The latter also considers sedimentological evidence and is framed within the tectonic and sedimentary context recently proposed by American workers. Biofacies point toward environments differing in terms of substrate texture, presence/absence of vegetal cover, energy level, variously distributed within the low tide mark-40 m bathymetric range. 

  7. Challenges and opportunities for implementing sustainable energy strategies in coastal communities of Baja California Sur, Mexico

    Science.gov (United States)

    Etcheverry, Jose R.

    This dissertation explores the potential of renewable energy and efficiency strategies to solve the energy challenges faced by the people living in the biosphere reserve of El Vizcaino, which is located in the North Pacific region of the Mexican state of Baja California Sur. This research setting provides a practical analytical milieu to understand better the multiple problems faced by practitioners and agencies trying to implement sustainable energy solutions in Mexico. The thesis starts with a literature review (chapter two) that examines accumulated international experience regarding the development of renewable energy projects as a prelude to identifying the most salient implementation barriers impeding this type of initiatives. Two particularly salient findings from the literature review include the importance of considering gender issues in energy analysis and the value of using participatory research methods. These findings informed fieldwork design and the analytical framework of the dissertation. Chapter three surveys electricity generation as well as residential and commercial electricity use in nine coastal communities located in El Vizcaino. Chapter three summarizes the fieldwork methodology used, which relies on a mix of qualitative and quantitative research methods that aim at enabling a gender-disaggregated analysis to describe more accurately local energy uses, needs, and barriers. Chapter four describes the current plans of the state government, which are focused in expanding one of the state's diesel-powered electricity grids to El Vizcaino. The Chapter also examines the potential for replacing diesel generators with a combination of renewable energy systems and efficiency measures in the coastal communities sampled. Chapter five analyzes strategies to enable the implementation of sustainable energy approaches in El Vizcaino. Chapter five highlights several international examples that could be useful to inform organizational changes at the federal

  8. Hybrid system of generating electricity, solar eolic diesel San Juanico, Baja California Sur, Mexico; Sistema hibrido de generacion electrica, eolico solar diesel San Juanico, Baja California Sur, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Huerta, Javier [Comision Federal de Electricidad, La Paz, Baja California Sur (Mexico); Johnston, Peter [Technology Development, Arizona (United States); Napikoski, Chester [Generation Engineering, Arizona (United States); Escutia, Ricardo [Comision Federal de Electricidad, Baja California Sur (Mexico)

    2000-07-01

    The Comision Federal de Electricidad (CFE), and the northamerican electric company Arizona Public Service (APS), made an agreement of collaboration to develop a project of generating electricity with the use of renewable resources. The premises that where agreed on are the following: 1. Focus the project a rural community. 2. The cost of the whole project should be lower than compared to the interconnection to a conventional system. 3. Acceptance of the community, and the governmental authorities. 4. Sustentability of the operation of the system. Several technical and economical analysis where done, such as the evaluation of the solar and eolic resources, study of the environmental impact, negotiation agreements so it would be possible to obtain de economical resources from Niagara Mohawk (NIMO), and the USAID, all of this thru the supervising of the Sandia National Laboratories. After the anemometric and solar radiation measures where made, it was considered that the community of San Juanico, en Baja California Sur, Mexico, was the most feasible one, it was necessary also to consider the aspects of logistics, socials, size of the community and as a detonator for the economic activities of tourism and fishing. The APS formulated the executive project in accordance with the recommendations of the different areas of CFE. The project consists basically in the installation of 10 wind generators of 10 Kw, a battery bank for 432 KWh, plus a diesel generator for emergencies of 80 Kw. Besides the civil and electromechanical installation. It was necessary to involve the community in the knowledge and followup of the project form it's, considering that this factor would be essential, so it could be successful. Lamps of low consumption where installed on the houses and street lightning, to optimize the system. The patronato that is a civil association of the community, is in charge of the administration of the system, it receives support from personnel of CFE. The income

  9. Hybrid system of generating electricity, solar eolic diesel San Juanico, Baja California Sur, Mexico; Sistema hibrido de generacion electrica, eolico solar diesel San Juanico, Baja California Sur, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Huerta, Javier [Comision Federal de Electricidad, La Paz, Baja California Sur (Mexico); Johnston, Peter [Technology Development, Arizona (United States); Napikoski, Chester [Generation Engineering, Arizona (United States); Escutia, Ricardo [Comision Federal de Electricidad, Baja California Sur (Mexico)

    2000-07-01

    The Comision Federal de Electricidad (CFE), and the northamerican electric company Arizona Public Service (APS), made an agreement of collaboration to develop a project of generating electricity with the use of renewable resources. The premises that where agreed on are the following: 1. Focus the project a rural community. 2. The cost of the whole project should be lower than compared to the interconnection to a conventional system. 3. Acceptance of the community, and the governmental authorities. 4. Sustentability of the operation of the system. Several technical and economical analysis where done, such as the evaluation of the solar and eolic resources, study of the environmental impact, negotiation agreements so it would be possible to obtain de economical resources from Niagara Mohawk (NIMO), and the USAID, all of this thru the supervising of the Sandia National Laboratories. After the anemometric and solar radiation measures where made, it was considered that the community of San Juanico, en Baja California Sur, Mexico, was the most feasible one, it was necessary also to consider the aspects of logistics, socials, size of the community and as a detonator for the economic activities of tourism and fishing. The APS formulated the executive project in accordance with the recommendations of the different areas of CFE. The project consists basically in the installation of 10 wind generators of 10 Kw, a battery bank for 432 KWh, plus a diesel generator for emergencies of 80 Kw. Besides the civil and electromechanical installation. It was necessary to involve the community in the knowledge and followup of the project form it's, considering that this factor would be essential, so it could be successful. Lamps of low consumption where installed on the houses and street lightning, to optimize the system. The patronato that is a civil association of the community, is in charge of the administration of the system, it receives support from personnel of CFE. The income that

  10. An application of neural network in geophysical prospecting. Electrical resistivity at Las Virgenes geothermal field, Baja California Sur, Mexico; Una aplicacion de las redes neuronales a la prospeccion geofisica. Resistividad electrica en las Tres Virgenes, Baja California Sur, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Palma Guzman, Sergio Hugo [Comision Federal de Electricidad, Morelia, Michoacan (Mexico)

    2000-12-01

    The technology of the neural network is presented with geophysical focus in the Las Virgenes geothermal field, Baja California Sur, Mexico. The results obtained when extrapolating the associative data of the prospecting magnetoteluria and Vertical Electric Sounding, on the area of the geothermal wells to the rest of the area, allows to classify zones of interest for the geothermal exploitation. Also, the use of these associative parameters with the information of the stabilized temperature of the wells, they allow to predict temperatures for the rest of the area. [Spanish] Se presenta una aplicacion de la tecnologia de las redes neuronales con enfoque geofisico en el campo geotermico de Las Virgenes, Baja California Sur, Mexico. Los resultados obtenidos al extrapolar los datos asociativos de las prospecciones geoelectricas de magnetoteluria y sondeos electricos verticales, en la zona de los pozos geotermicos al resto del area, permiten clasificar zonas de interes para la explotacion geotermica. Tambien, la utilizacion de estos parametros asociativos con la informacion de la temperatura estabilizada de los pozos, permiten predecir temperaturas para la misma area.

  11. Observations on the electronic equipment employed for making measurements on the pile G1; Observations sur le materiel electronique utilise pour les mesures sur la pile G1

    Energy Technology Data Exchange (ETDEWEB)

    Ailloud, J; Belin, P; Meunier, A; Tarabella, A [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1957-07-01

    The electronic apparatus employed during the manipulations carried out on the pile G1 is briefly described, with the aim of putting on record the inconveniences encountered in the course of the operation of this equipment. (author) [French] On decrit succinctement l'appareillage electronique utilise durant les manipulations effectuees sur la pile G1, dans le but de noter les inconvenients rencontres au cours de l'exploitation de cet appareillage. (auteur)

  12. Key species and impact of fishery through food web analysis: A case study from Baja California Sur, Mexico

    Science.gov (United States)

    Rocchi, Marta; Scotti, Marco; Micheli, Fiorenza; Bodini, Antonio

    2017-01-01

    Ecosystem-Based Management (EBM) aims to support the protection of natural ecosystems and to improve economic activities. It requires considering all of the actors interacting in social-ecological systems (e.g., fish and fishers) in the understanding that their interplay determines the dynamic behavior of the single actors as well as that of the system as a whole. Connections are thus central to EBM. Within the ecological dimension of socio-ecological systems, interactions between species define such connections. Understanding how connections affect ecosystem and species dynamics is often impaired by a lack of data. We propose food web network analysis as a tool to help bridge the gap between EBM theory and practice in data-poor contexts, and illustrate this approach through its application to a coastal marine ecosystem in Baja California Sur, Mexico. First, we calculated centrality indices to identify which key (i.e., most central) species must be considered when designing strategies for sustainable resource management. Second, we analyzed the resilience of the system by measuring changes in food web structure due to the local extinction of vulnerable species (i.e., by mimicking the possible effect of excessive fishing pressure). The consequences of species removals were quantified in terms of impacts on global structural indices and species' centrality indices. Overall, we found that this coastal ecosystem shows high resilience to species loss. We identified species (e.g., Octopus sp. and the kelp bass, Paralabrax clathratus) whose protection could further decrease the risk of potential negative impacts of fishing activities on the Baja California Sur food web. This work introduces an approach that can be applied to other ecosystems to aid the implementation of EBM in data-poor contexts.

  13. Comparative analysis of the reproductive strategy of lion's paw scallop Nodipecten subnodosus in Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Marco A Angel-Dapa

    2015-07-01

    Full Text Available The reproductive strategy of lion's paw scallop Nodipecten subnodosus was evaluated in a culturing system in Bahía Tortugas, Baja California Sur, Mexico during an annual cycle, comparing its response with data previously reported at other localities. High frequencies of ripe gonads throughout the year indicate that reproduction was continuous, with two main ripening/spawning events: July-September and December-March. A continuous breeding is also reported for the species in Bahía Magdalena, Bahía Juncalito, and Bahía de Los Angeles. These eutrophic areas are Biological Active Centers where gametogenesis appears to be regulated by the energy taken from recently ingested food following an opportunistic strategy. However, the digestive gland index decreased and the muscle indices increased during one of the breeding peaks, suggesting that some stored reserves are also used to sustain gametogenesis (conservative strategy partially. High incidences of atretic oocytes are likely associated with atypical daily variations in water temperature from May through September (12 to 33°C, or with stressful conditions in the culturing system in summer. Despite this, the culturing system set in Bahía Tortugas appears beneficial for a continuous reproduction of N. subnodosus.

  14. Baseline heavy metals and metalloid values in blood of loggerhead turtles (Caretta caretta) from Baja California Sur, Mexico.

    Science.gov (United States)

    Ley-Quiñónez, C; Zavala-Norzagaray, A A; Espinosa-Carreón, T L; Peckham, H; Marquez-Herrera, C; Campos-Villegas, L; Aguirre, A A

    2011-09-01

    Environmental pollution due to heavy metals is having an increased impact on marine wildlife accentuated by anthropogenic changes in the planet including overfishing, agricultural runoff and marine emerging infectious diseases. Sea turtles are considered sentinels of ecological health in marine ecosystems. The objective of this study was to determine baseline concentrations of zinc, cadmium, copper, nickel, selenium, manganese, mercury and lead in blood of 22 clinically healthy, loggerhead turtles (Caretta caretta), captured for several reasons in Puerto López Mateos, Baja California Sur, Mexico. Zinc was the most prevalent metal in blood (41.89 μg g⁻¹), followed by Selenium (10.92 μg g⁻¹). The mean concentration of toxic metal Cadmium was 6.12 μg g⁻¹ and 1.01μg g⁻¹ respectively. Mean concentrations of metals followed this pattern: Zn>Se>Ni>Cu>Mn>Cd>Pb and Hg. We can conclude that blood is an excellent tissue to measure in relatively non-invasive way baseline values of heavy metals in Caretta caretta. Copyright © 2011 Elsevier Ltd. All rights reserved.

  15. [Distribution of aquatic and raptor birds in a freshwater artificial pond of Baja California Sur, Mexico].

    Science.gov (United States)

    Castillo-Guerrero, J A; Carmona, R

    2001-01-01

    We determined the taxonomic composition and spatial-temporal distribution of aquatic and raptor birds in a freshwater artificial pond of El Centenario, Baja California Sur, México, during 24 biweekly censuses (April, 1998 to March, 1999). The pond is particularly attractive for birds because of its variety of food items. A total 25,563 records of 69 species were done, among them the first report of Chlidonias niger and Phalaropus tricolor for the region. Species richness and abundance were determined for the migrant component, mostly Anatidae (16 species and 55.6% of the total abundance) and shorebirds (18 species and 13.3%). The greater number of species and individuals was in C the deepest and more heterogeneous section of the pond. The most important species was Oxyura jamaicensis (30% of the total observed individuals), with highest abundance in the peninsula. The artificial pond presented an atypical and distinct ornithological composition because it is located in an arid region, and acts as a resting site for migrant birds. The site included species that usually live in freshwater and coastal areas, a characteristic reflected in their high richness. It contributes noticeably to the local avian biodiversity.

  16. Employability of the Bachelor of Science in Electronics Engineering Graduates of Camarines Sur Polytechnic Colleges

    Directory of Open Access Journals (Sweden)

    Rizza T. Loquias

    2015-11-01

    Full Text Available The study determined the employment status of the graduates of BS Electronics Engineering from 1999 to 2011. It also addressed the relevance of the ECE program outcomes and school factors to their employability. Pertinent data were gathered using a questionnaire and the sample size of 180 was determined using Slovin’s formula. Findings revealed that the graduates are highly employable in a wide range of industry such as electronics manufacturing, electronics design, telecommunications, broadcasting, and data communications and ICT-related areas, were able to pass the licensure examinations and other certifications, currently enjoying regular permanent job positions as supervisors, production engineers, process engineers, educators and others, and are working for companies located in Metro Manila and industrial zones in Laguna and Cavite. A significant number work abroad as OFWs. Only a small number are employed in the province of Camarines Sur mainly due to the lack of electronics industries and employment opportunities in the area. The skills the graduates found most useful to their first jobs are critical thinking, problem solving, and communication skills. Suggestions were given such as the inclusion of industry-utilized software and enhancement of the OJT program, more hands-on activities in the curriculum, exposure to industry while studying, and job familiarization among others. The findings of the study can serve as basis for curriculum review and revision to meet the demands of the industry.

  17. Baseline heavy metals and metalloid values in blood of loggerhead turtles (Caretta caretta) from Baja California Sur, Mexico

    International Nuclear Information System (INIS)

    Ley-Quinonez, C.; Zavala-Norzagaray, A.A.; Espinosa-Carreon, T.L.; Peckham, H.; Marquez-Herrera, C.; Campos-Villegas, L.; Aguirre, A.A.

    2011-01-01

    Highlights: → We report baseline levels of selected heavy metals in blood of Pacific loggerhead turtles. → Blood was used to measure in a relatively non-invasive way baseline values of heavy metals. → Zn and Cd were found in high concentrations compared to levels reported in other parts of the world. → Cu concentrations in blood are high as they relate to concentrations in muscle. → No correlations were found between of heavy metals and metalloids analyzed and the size of the turtles. - Abstract: Environmental pollution due to heavy metals is having an increased impact on marine wildlife accentuated by anthropogenic changes in the planet including overfishing, agricultural runoff and marine emerging infectious diseases. Sea turtles are considered sentinels of ecological health in marine ecosystems. The objective of this study was to determine baseline concentrations of zinc, cadmium, copper, nickel, selenium, manganese, mercury and lead in blood of 22 clinically healthy, loggerhead turtles (Caretta caretta), captured for several reasons in Puerto Lopez Mateos, Baja California Sur, Mexico. Zinc was the most prevalent metal in blood (41.89 μg g -1 ), followed by Selenium (10.92 μg g -1 ). The mean concentration of toxic metal Cadmium was 6.12 μg g -1 and 1.01 μg g -1 respectively. Mean concentrations of metals followed this pattern: Zn > Se > Ni > Cu > Mn > Cd > Pb and Hg. We can conclude that blood is an excellent tissue to measure in relatively non-invasive way baseline values of heavy metals in Caretta caretta.

  18. Rapid subsidence and stacked Gilbert-type fan deltas, Pliocene Loreto basin, Baja California Sur, Mexico

    Science.gov (United States)

    Dorsey, Rebecca J.; Umhoefer, Paul J.; Renne, Paul R.

    1995-08-01

    Pliocene nonmarine to marine sedimentary rocks exposed in the Loreto basin, Baja California Sur, provide a record of syntectonic subsidence and sedimentation in a transform-rift basin that developed along the western margin of the Gulf of California. A thick sequence of twelve Gilbert-type fan deltas, having a total measured thickness of about 615 m, accumulated near the fault-bounded southwestern margin of this basin. Based on stratal geometries and lithofacies associations, sedimentary rocks are divided into Gilbert-delta topset, foreset and bottomset strata, shell beds and background shallow-marine shelf deposits. Topset strata of each Gilbert-type delta cycle are capped by laterally persistent molluscan shell beds containing diverse assemblages of bivalves, pectens, oysters, gastropods and echinoids. These shell beds are interpreted to be condensed intervals that record sediment starvation during abandonment of the fan-delta plain. Delta abandonment may have been caused by large episodic faulting events, which submerged each pre-existing fan-delta plain, substantially slowed detrital input by drowning of alluvial feeder channels, and created new accommodation space for each new Gilbert-type fan delta. Alternatively, it is possible that delta-plain abandonment was caused by upstream avulsions and autocyclic lateral switching of fan-delta lobes during relatively uniform rates of slip along the basin-bounding fault. Two contrasting, plausible basin models are proposed for the Loreto basin: (1) asymmetric subsidence along a high-angle oblique-slip normal fault, producing a classic half-graben basin geometry with vertically stacked Gilbert-type fan deltas; or (2) lateral stacking and horizontal displacement of strata away from a relatively fixed depocenter due to fault movement in the releasing bend of a listric strike-slip fault. We favor the first model because field relations and simple geometric constraints suggest that most of the total measured section

  19. Geochemical characteristics of water from the reservoir of the hydrothermal system of Las Tres Virgenes, Baja California Sur, Mexico; Caracteristicas geoquimicas de las aguas del reservorio del sistema hidrotermal actual de Las Tres Virgenes, Baja California Sur, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Gonalez Partida, Eduardo [Universidad Nacional Autonoma de Mexico (Mexico); Tello Hinojosa, Enrique [Comision Federal de Electricidad (Mexico); Pal Verma, Mahendra [Instituto de Investigaciones Electricas (Mexico)

    2001-03-01

    The Las Tres Virgenes geothermal field is a liquid dominated system. The separated produced by the wells are sodium-chloride type, which is a characteristic of totally equilibrated geothermal brine. The temperature of water-rock interaction in the reservoir is 280 Celsius degrees. the chemical composition of gases corresponds to the one expected in a geothermal environment. The CO{sub 2} is the predominating gas and it is superior in 90% in weight to the total of existing gases. The gas contents is less than 1% in weight, in the case of the wells LV-1 and LV-3. It is also possible to conclude that the gases are in equilibrium with the liquid phase at a temperature of 280 Celsius degrees. With respect to water quality, it is saline, from high to very high and the contents of exchangeable sodium is also very high, resulting in waters not fit for agricultural usage. [Spanish] El yacimiento geotermico de Las Tres Virgenes, en Baja California Sur, Mexico, es un sistema de liquido dominante, en donde el agua separada producida por los pozos presenta un caracter clorurado-sodico caracteristico de una salmuera de origen geotermico totalmente equilibrada. El sistema agua-roca se encuentra en equilibrio a una temperatura de 280 grados centigrados , dicha temperatura son congruentes con las estimadas para las fases gaseosas y liquidas. La composicion quimica de los gases corresponde a la esperada en un ambiente geotermico. El CO{sub 2} es el predominante y es superior a 90% en peso del total de los gases presentes. El contenido de gas es menor de 1% en peso en el caso de los pozos LV-1 y LV-3. Tambien se puede concluir que los gases estan en equilibrio en las fases liquidas a una temperatura de 280 grados centigrados. Con respecto a la calidad del agua, presenta una salinidad de alta a muy alta y el contenido de sodio intercambiable tambien es muy alto, por lo que dichas aguas no son muy aptas para el cultivo.

  20. Seasonal diet composition of Fundulus lima (Cyprinodontiformes: Fundulidae in two oasis systems of Baja California Sur, Mexico

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    Dinora Acosta Zamorano

    2011-12-01

    Full Text Available Fundulus lima inhabits river drainage systems and is threatened after the introduction of cichlids in the area. To support conservation programs, the spatial and temporal variation of the diet composition of this endangered killifish, was determined in two oasis systems of Baja California Sur, Mexico (San Ignacio and La Purisima river drainages, during rainy and dry seasons. F. lima was captured by using passive and active capture techniques. A total of 192 stomach contents of F. lima was analyzed. The contribution of each prey item in the diet composition was quantified by means of the indices of occurrence frequency (% OF, numerical (%N and volume (%V percentages. The relative importance of each prey item was determined according to the percentage of the Relative Importance Index (%RII. The similarity of the diet was calculated between hydrological basins (populations combined by basin, seasons (rainy versus dry months, sexes and size classes, by using Schoener’s resource overlap index. We used two ecological indices to determine the type of feeding strategy exhibited by the fish: (1 niche breadth of Levins and (2 proportional similarity of Feisinger. Sand was the most abundant item in the stomach content of killifishes from both drainages (39% and 47%, respectively. Diet composition was similar for both drainages (74% as well as among their respective size classes; however, it was different between sexes. In both drainages, F. lima predated mainly on diatom algae, dipterous and trichopteran larvae, and fish scales during the dry season; while it preferred dipterous larvae, filamentous algae and ostracods in the rainy season. A feeding strategy of opportunist type was exhibited by F. lima during the rainy season, changing to specialist type during the dry season. This information will be the basis for future investigations related to the conservation of this endangered species and its habitat. Rev. Biol. Trop. 59 (4: 1669-1678. Epub 2011

  1. Photo series for quantifying forest fuels in Mexico: montane subtropical forests of the Sierra Madre del Sur and temperate forests and montane shrubland of the northern Sierra Madre Oriental

    Science.gov (United States)

    Jorge E. Morfin-Rios; Ernesto Alvarado-Celestino; Enrique J. Jardel-Pelaez; Robert E. Vihnanek; David K. Wright; Jose M. Michel-Fuentes; Clinton S. Wright; Roger D. Ottmar; David V. Sandberg; Andres Najera-Diaz

    2008-01-01

    Single wide-angle and stereo photographs display a range of forest ecosystems conditions and fuel loadings in montane subtropical forests of the Sierra Madre del Sur and temperate forests and montane shrubland of the northern Sierra Madre Oriental of Mexico. Each group of photographs includes inventory information summarizing overstory vegetation composition and...

  2. Mexico.

    Science.gov (United States)

    Semaan, Leslie

    The text explores Mexico's history, geography, art, religion, and lifestyles in the context of its complex economy. The text focuses on Mexico's economy and reasons for its current situation. Part I of this teaching unit includes: Teacher Overview, Why Study Mexico, Mexico Fact Sheet, Map of Mexico, the Land and Climate, History, Government,…

  3. Composición del aceite esencial de Tagetes lacera, planta endémica de Baja California Sur, México Composition of essential oil of Tagetes lacera, endemic plant from Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Francisco Díaz-Cedillo

    2012-06-01

    Full Text Available Es escasa la información sobre la biología y química de Tagetes lacera Brand. (Asteraceae, especie endémica de Baja California Sur (BCS, México, que por su porte alto y presencia de aroma es una fuente de aceites esenciales útil para el control de plagas y enfermedades de cultivos agrícolas. A partir de partes aéreas de plantas en floración de T. lacera recolectadas en la sierra de la Laguna, BCS se obtuvo aceite esencial mediante hidrodestilación. Por medio del procedimiento de análisis CG-EM, se identificaron 6 compuestos principales: E-tagetona (26.2%, crisantenona (24.8%, verbenona (22.1%, α-thujeno (20.5%, β-pineno (3.1% y α-pineno (1.9%.It is scarce the background on the biology and chemistry of Tagetes lacera Brand. (Asteraceae, an endemic species from Baja California Sur (BCS, Mexico that considering its plant high and odor is an essential oil source to obtain biopesticides. From aerial parts of plants fully flowered of T. lacera picked in Sierra de la Laguna, BCS, essential oil was obtained by hydrodistillation. Using GC-MS analysis, 6 major compounds were identified: E-tagetone (26.2%, chrysanthenone (24.8%, verbenone (22.1%, α-thujene (20.5%, β-pinene (3.1%, α-pinene (1.9%.

  4. The vascular flora and floristic relationships of the Sierra de La Giganta in Baja California Sur, Mexico La flora vascular y las relaciones florísticas de la sierra de La Giganta de Baja California Sur, México

    Directory of Open Access Journals (Sweden)

    José Luis León de la Luz

    2008-06-01

    Full Text Available The Sierra de La Giganta is a semi-arid region in the southern part of the Baja California peninsula of Mexico. Traditionally, this area has been excluded as a sector of the Sonoran Desert and has been more often lumped with the dry-tropical Cape Region of southern Baja California peninsula, but this classical concept of the vegetation has not previously been analyzed using formal documentation. In the middle of the last century, Annetta Carter, a botanist from the University of California, began explorations in the Sierra de La Giganta that lasted 24 years, she collected 1 550 specimens and described several new species from this area, but she never published an integrated study of the flora. Our objectives, having developed extensive collections in the same area over the past years, are to provide a comprehensive species list and description of the vegetation of this mountain range. We found a flora of 729 taxa, poorly represented in tree life-forms (3.1%, a moderate level (4.4% of endemism, and the dominance of plants in the sampling plots is composed mainly for legume trees and shrubs. Additionally, using a biogeographical approach, we compare our list with other known lists of plants from 5 areas, 3 in the Cape Region, 1 in the Sonoran Desert, and other in the thornscrub area of NW Mexico. We conclude that the La Giganta flora has a mixed composition, primarily made up of plants shared with the lowlands of the southern Cape Region, but also share an important proportion of the flora with the desert mountains of the central peninsula and some with the Sonoran desertscrub of mainland Mexico. Consequently we support that the La Giganta flora is part of a floristic continuum along the volcanic mountains of the southern peninsula that eventually could be considered a new eco-region in the same peninsular land.La sierra de La Giganta se localiza en el estado de Baja California Sur, México, en una región semi-árida. Tradicionalmente, esta

  5. General characteristics of the diet of Trachinotus paitensis (Teleostei: Carangidae) from San Ignacio Lagoon, Baja California Sur, Mexico.

    Science.gov (United States)

    Cruz Escalona, V H; Abitia Cárdenas, L A

    2004-03-01

    The food habits of Trachinotus paitensis, in San Ignacio Lagoon B.C.S., Mexico, were investigated. We observed that T. paitensis is carnivorous, feeding mainly on benthic invertebrates (the gastropods Anachis spp., Bittium spp., and the crustacean larvae). We concluded that T. paitensis is an opportunist predator that impacts mainly on epibenthic invertebrates.

  6. Lunar phase and catch success of the striped marlin (Tetrapturus audax in sport fishing at Los Cabos, Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    G. Ponce-Díaz

    2003-06-01

    Full Text Available The influence of the lunar phases on the catch-per-unit effort (CPUE of the striped marlin (Tetrapturus audax captured by the Cabo San Lucas, Baja California Sur, Mexico sport-fishing fleet from October 1987 to June 1989 was analyzed. The information is from 3 377 fishing trips by 13 vessels that represent about 10 % of the fleet. The analysis of the CPUE showed a maximum in January 1988 and a minimum in February 1989. Taking into account the knowledge of the factors that had influence on the fishing success is important in the resource management. No significant difference during the full moon compared with results during other lunar phases was found.Se analizó la influencia de las fases lunares sobre la captura por unidad de esfuerzo en el marlín rayado (Tetraptus audax capturado por la flota deportiva en Cabo San Lucas, Baja California Sur, desde octubre de 1987 a junio de 1989. La información de 3377 viajes de pesca por 13 embarcaciones que representan cerca de un 10% de la flota. El análisis mostró un máximo en enero de 1988 y un mínimo en febrero de 1989. Tomar en consideración el conocimiento de los factores que tuvieron influencia en el éxito en la pesca es importante en el manejo de los recursos. No se encontró diferencias significativas durante la luna llena comparado con los resultados obtenidos durante las otras fases de la luna.

  7. Variabilidad de la abundancia de zooplancton en Bahía Magdalena Baja California Sur, México (1997-2001 Zooplankton abundance variability in Magdalena Bay, Baja California Sur, Mexico (1997-2001

    Directory of Open Access Journals (Sweden)

    Sergio Hernández-Trujillo

    2010-01-01

    Full Text Available Se analizaron muestras de zooplancton de 16 campañas oceanógraficas, efectuadas en Bahía Magdalena, Baja California Sur, México, entre agosto de 1997 y marzo de 2001. Se identificó un total de 26 grupos taxonómicos, de los cuales los más abundantes y frecuentes fueron copépodos y quetognatos; en 2000-2001 se observó una tendencia a disminuir entre 10 y 20 el número de grupos de zooplancton. La biomasa zooplanctónica y abundancia de copépodos disminuyeron en el periodo de estudio, en contraste con los quetognatos que tuvieron un ligero aumento. Las fluctuaciones de abundancia de zooplancton no estuvieron relacionadas con la concentración de clorofila-α, a diferencia de los máximos de abundancia de zooplancton, que estuvieron asociados a los cambios de la temperatura superficial del mar. El ciclo estacional de la abundancia del zooplancton en Bahía Magdalena, indicó que en invierno el promedió fue mayor de 65.000 ind 100 m-3 , valor que aumentó en primavera a más de 99.000 ind 100 m-3 , se mantuvo en verano alrededor de 100.000 ind 100 m-3 y en otoño descendió rápidamente a casi 40.000 ind 100 m-3.Zooplankton were studied from 16 oceanographic surveys carried out in Magdalena Bay, Baja California Sur, Mexico, between August 1997 and March 2001. Twenty-six taxonomic groups were identified, the most abundant and frequent of which were copepods and chaetognaths. In 2000-2001, the number of zooplankton groups tended to decrease by 10 to 20. Both zooplankton biomass and copepod abundance declined, unlike chaetognaths, which increased slightly. Fluctuations in zooplankton abundance were independent of the chlorophyll-a concentration, whereas the maximum zooplankton abundances were associated with changes in the sea surface temperature. The seasonal zooplankton abundance cycle in Magdalena Bay indicated that, in winter, the averaged was than 65,000 ind 100 m-3 , a value that increased to more than 99,000 ind 100 m-3 in spring

  8. QUALITY OF LIFE OF TOURIST CORRIDORS PARTICIPANTS IN SOUTHERN SONORA, MEXICO/CALIDAD DE VIDA DE LOS PARTICIPANTES DE CORREDORES TURISTICOS EN EL SUR DE SONORA, MEXICO.

    OpenAIRE

    Irma Guadalupe Esparza Garcia; Altayra Geraldine Ozuna Beltran; Marco Alberto Nunez Ramirez; Rosalva Irma Castro Alvarez; Yesenia Clark Mendivil; Maria Nelida Sanchez Banuelos.

    2017-01-01

    The aim of the present research is to measure the relationship and difference between the indicators of the quality of life in the participants of the tourist communities of Mexico. Through a Pearson correlation and one-way ANOVA, the empirical evidence shows that the quality of life items within the communities are associated with a positive and significant way and, at the same time, these differ statistically from each other. The statistical analyzes show the emergence of needs, which have ...

  9. Effects of Selective Logging on Birds in the Sierra de Coalcoman, Sierra Madre del Sur, Michoacan, Western Mexico

    Science.gov (United States)

    Jose Fernando Villaseñor; Neyra Sosa; Laura Villaseñor

    2005-01-01

    In order to determine the effects of selective logging on pine-oak forest?s bird communities in central-western Mexico, we gathered information through 10-min point counts in plots without wood extraction and sites logged at different times in the past (1, 4, and 8 years). We did not find evidences to argue for effects of logging on bird communities; the study plots...

  10. Analysis of drought and desertification by means of aridity indices and the estimation of water gap in Baja California Sur, Northwest Mexico

    Directory of Open Access Journals (Sweden)

    Enrique Troyo Diéguez

    2013-10-01

    Full Text Available In Baja California Sur (BCS, Mexico, dry-semi warm and warm climates prevail associated to an extreme trend of diurnal temperatures and the environmental dryness. In this State, the maximum summer t exceeds 40° C and the minimum varies from 5 to 12° C, with a minimal for the State of 2° C in winter, at the top of the Sierra de La Laguna; only Los Cabos region has a warm humid climate. Because precipitation in the state is low, oscillating from 310 mm in the southern area of the state to 120 mm per year in the northern portion, predictions and scenarios under climate conditions point to an intensification of droughts. The aim of this work was to carry out a comparative analysis of trends of temperature, precipitation and hydro-environmental aridity among contrasting localities of BCS, by means of the application of Aridity Indexes and the determination of the Standardized Water Gap (BHE, through a numerical scale modification of the De Martonne Index. With the values of temperature and precipitation for the different climate change scenarios for four weather stations, the indicators Hydro Environmental Availability Index (IDHA and Hydro Environmental Drought Index (ISHA were calculated to determine their trend and the consequent BHE, an innovative quantification of wáter deficit, which is proposed in this paper. The máximum value of BHE (10 units, indicating prevalence of drought, is observed from February to June in almost the entire state.

  11. Desalination and Water Security: The Promise and Perils of a Technological Fix to the Water Crisis in Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Jamie McEvoy

    2014-10-01

    Full Text Available Across the globe, desalination is increasingly being considered as a new water supply source. This article examines how the introduction of desalinated water into the municipal water supply portfolio has affected water security in the coastal tourist city of Cabo San Lucas in Baja California Sur (BCS, Mexico. It also analyses the competing discourses surrounding desalination in the region and discusses alternative water management options for achieving water security. This article challenges the notion that desalination is an appropriate and sufficient technological solution for arid regions. The findings provide evidence of increased yet delimited water security at a neighbourhood scale while identifying new vulnerabilities related to desalination, particularly in the context of the global South. This article concludes that implementing a technological fix on top of a water management system that is plagued with more systemic and structural problems does little to improve long-term water management and is likely to foreclose or forestall other water management options. This multi-scalar analysis contributes to the emerging literature on water security by considering both a narrow and broad framing of water security and identifying a range of factors that influence water security.

  12. Can the Adoption of Desalination Technology Lead to Aquifer Preservation? A Case Study of a Sociotechnical Water System in Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Jamie McEvoy

    2015-09-01

    Full Text Available There is growing concern about the sustainability of groundwater supplies worldwide. In many regions, desalination—the conversion of saline water to freshwater—is viewed as a way to increase water supplies and reduce pressure on overdrawn aquifers. Using data from reports, articles, interviews, a survey, and a focus group, this paper examines if, and how, the adoption of desalination technology can lead to aquifer preservation in Baja California Sur (BCS, Mexico. The paper outlines existing institutional arrangements (i.e., laws, rules, norms, or organizations surrounding desalination in BCS and concludes that there are currently no effective mechanisms to ensure aquifer preservation. Four mechanisms that could be implemented to improve groundwater management are identified, including: 1 integrated water-and land-use planning; 2 creation of an institute responsible for coordinated and consistent planning; 3 improved groundwater monitoring; and 4 implementation of water conservation measures prior to the adoption of desalination technology. This paper concludes that viewing water technologies, including desalination, as sociotechnical systems—i.e., a set of technological components that are embedded in complex social, political, and economic contexts—has the potential to create a more sustainable human–environment–technology relationship. By assessing desalination technology as a sociotechnical system, this study highlights the need to focus on institutional development and capacity building, especially within local water utilities and urban planning agencies.

  13. Marine diet and tobacco exposure affects mercury concentrations in pregnant women (I from Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Ramón Gaxiola-Robles

    2014-01-01

    Full Text Available Seafood provides essential polyunsaturated fatty acids (PUFA and other nutrients to pregnant women and their fetus(es while a diet rich in finfish can be a major pathway of monomethyl mercury (MeHg+ exposure. We measured total mercury concentration ([THg] in hair samples provided by 75 women in Baja California Sur (BCS to assess its relationship with age, parity, tobacco smoke exposure, and diet based on survey methodologies. Generalized linear models (GLM were used to explain the possible association of the different variables with [THg] in hair. Median [THg] in hair was 1.52 μg g−1, ranging from 0.12 to 24.19 μg g−1 and varied significantly by segment. Approximately 72% (54/75 of those evaluated exceed 1 μg g−1 [THg] and 8% (6/75 exceed 5 μg g−1 [THg] in hair. Although frequency of fish consumption contributed significantly to explaining hair [THg], fish consumption only explained 43% of [THg] in a GLM incorporating tobacco exposure and body mass index. This study establishes possible relationships among multiple potential sources of exposure and other factors related to [THg] in hair of women in the prenatal period. A more detailed examination of other sources of exposure and factors contributing to [THg] is warranted.

  14. Geochemistry of Dissolved Trace Metals in the Waters of Bahia Magdalena, Baja California Sur, Pacific Coast, Mexico

    Science.gov (United States)

    Suresh Babu, S.

    2016-12-01

    Forty two samples were acquired from the surface and bottom water profiles along 5 transects spread over Bahia Magdalena lagoon, Baja California Sur to assess the behavior of trace metals in a high influenced upwelling region on the Pacific coast. To elaborate the fate of metals, also the physico-chemical parameters (pH, temperature, salinity, conductivity, dissolved oxygen). Determination of the concentrations of trace metals (Fe, Mn, Cr, Cu, Co, Pb, Ni, Zn, Cd As, Hg) were measured using Atomic absorption spectrometry. The results demonstrated high values of As, Ni and Co which is attributed to the local geology and phosphate deposits. Low values of Fe and Mn are attested to the oxic conditions of the lagoon which are responsible for the oxidation of Fe and Mn. The region witnesses raised temperatures (28.92ºC) and salinities of 35.2 PSU for its arid climatic conditions and high rates of evaporation. In general, the region presented minor quantities of dissolved trace metals due to dispersion and high intense interaction with the open sea. The results were also compared with other studies to understand the enrichment pattern in this side of the pacific coast which experiences various geothermal activities and upwelling phenomenon.

  15. General characteristics of the diet of Trachinotus paitensis (Teleostei: Carangidae from San Ignacio Lagoon, Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    V.H. Cruz Escalona

    2004-03-01

    Full Text Available The food habits of Trachinotus paitensis, in San Ignacio Lagoon B.C.S., Mexico, were investigated. We observed that T. paitensis is carnivorous, feeding mainly on benthic invertebrates (the gastropods Anachis spp., Bittium spp., and the crustacean larvae. We concluded that T. paitensis is an opportunist predator that impacts mainly on epibenthic invertebratesFueron investigados los hábitos alimenticios de Trachinotus paitensis, en la laguna San Ignacio B.C.S., México. Se observó que T. paitensis es carnívoro, y se alimenta principalmente de invertebrados bénticos (los gastrópodos Anachis spp., Bittium spp., y larvas de crustáceos. En conclusión esta especie es un depredador oportunista que tiene un impacto principalmente sobre las poblaciones de invertebrados epibénticos

  16. Incidence of organochlorine pesticides and the health condition of nestling ospreys (Pandion haliaetus) at Laguna San Ignacio, a pristine area of Baja California Sur, Mexico.

    Science.gov (United States)

    Rivera-Rodríguez, Laura B; Rodríguez-Estrella, Ricardo

    2011-01-01

    We identified and quantified organochlorine (OC) pesticide residues in the plasma of 28 osprey (Pandion haliaetus) nestlings from a dense population in Laguna San Ignacio, a pristine area of Baja California Sur, Mexico, during the 2001 breeding season. Sixteen OC pesticides were identified and quantified. α-, β-, δ- and γ-hexachlorocyclohexane, heptaclor, heptachlor epoxide, endosulfan I and II, endosulfan-sulfate, p,p'-DDE, p,p'-DDD, aldrin, dieldrin, endrin, endrin aldehyde, and endrin ketone were the OCs found in the plasma of nestlings, ranging from 0.002 to 6.856 pg/μl (parts per billion). No differences were found in the concentration of pesticides between genders (P > 0.05). In our work, the concentrations detected in the plasma were lower than those reported to be a threat for the species and that affect the survival and reproduction of birds. The presence of OC pesticides in the remote Laguna San Ignacio osprey population is an indication of the ubiquitous nature of these contaminants. OCs are apparently able to travel long distances from their source to the study area. A significant relationship between hemoglobin and mean corpuscular hemoglobin concentrations and OC concentrations were found suggesting that a potential effect on the health of chicks may exist in this osprey population caused by the OC, e.g. anemia. The total proteins were positively correlated with α-BHC, endosulfan I, and p,p'-DDD. It has been suggested that OC also affects competitive interactions and population status over the long term in vertebrate species, and our results could be used as reference information for comparison with other more exposed osprey populations.

  17. IDENTIFICATION AND CHARACTERIZATION OF Eimeria spp. DURING EARLY NATURAL INFECTION IN GOAT KIDS IN BAJA CALIFORNIA SUR, MEXICO

    Directory of Open Access Journals (Sweden)

    Ramón Cepeda-Palacios

    2015-12-01

    Full Text Available The aim of this study was to characterize the natural infection by Eimeria spp. in goat kids, and to describe some pathophysiological responses to eimerosis in kids under intensive rearing conditions in B.C.S, Mexico. Nineteen adult crossbred does naturally infected with mixed Eimeria spp. and 20 Anglo Nubian x Creole crossbred kids were used. Oocyst per gram of feces (OPG and identification of Eimeria species were determined in does (during the pre-kidding and post-kidding periods and kids. Clinical signs, hematocrit, hemoglobin and alkaline phosphatase activity in blood serum were evaluated. OPG (mean±SD was significantly higher (P<0.05 in pre-kidding (9,478±7,599 than in post-kidding (5,313±2,909 period. Oocyst elimination in feces began at age 59±9 days in kids. Eimerian species identified were E. arloingi, E. jolchijevi, E. ninakohlyakimovae, E. hirci, E. christenseni and E. alijevi. Kids were humanely sacrificed to evaluate pathological lesions. Intestinal lesions and lesion severity showed differences in duodenum, jejunum, ileum, cecum and colon, being more severe in duodenum. In conclusion, OPG increased during the late pregnancy in does which favored a doe-kid transmission mechanism. Our results support the notion of Eimeria reproduction rhythms during the late pregnancy period in goats, and this reproduction contribute to vertical transmission of Eimeria to the newborn. However, coccidian outbreaks are developed and clinically observed only when stressing factors such as when weaning occur. Coccidia had devastating effects on the intestine of kids, which might cause long-term permanent malabsortion consequences. Â

  18. Patterns of microbial diversity along a salinity gradient in the Guerrero Negro solar saltern, Baja CA Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Jesse G Dillon

    2013-12-01

    Full Text Available The goal of this study was to use environmental sequencing of 16S rRNA and bop genes to compare the diversity of planktonic bacteria and archaea across ponds with increasing salinity in the Exportadora de Sal (ESSA evaporative saltern in Guerrero Negro, Baja CA S., Mexico. We hypothesized that diverse communities of heterotrophic bacteria and archaea would be found in the ESSA ponds, but that bacterial diversity would decrease relative to archaea at the highest salinities. Archaeal 16S rRNA diversity was higher in Ponds 11 and 12 (370 & 380 g l-1 total salts respectively compared to Pond 9 (180 g l-1 total salts. Both Pond 11 and 12 communities had high representation (47 and 45% of clones respectively by Haloquadratum walsbyi-like (99% similarity lineages. The archaeal community in Pond 9 was dominated (79% by a single uncultured phylotype with 99% similarity to sequences recovered from the Sfax saltern in Tunisia. This pattern was mirrored in bop gene diversity with greater numbers of highly supported phylotypes including many Haloquadratum-like sequences from the two highest salinity ponds. In Pond 9, most bop sequences, were not closely related to sequences in databases. Bacterial 16S rRNA diversity was higher than archaeal in both Pond 9 and Pond 12 samples, but not Pond 11, where a non-Salinibacter lineage within the Bacteroidetes >98% similar to environmental clones recovered from Lake Tuz in Turkey and a saltern in Chula Vista, CA was most abundant (69% of community. This OTU was also the most abundant in Pond 12, but only represented 14% of clones in the more diverse pond. The most abundant OTU in Pond 9 (33% of community was 99% similar to an uncultured gammaproteobacterial clone from the Salton Sea. Results suggest that the communities of saltern bacteria and archaea vary even in ponds with similar salinity and further investigation into the ecology of diverse, uncultured halophile communities is warranted.

  19. Appendicularian distribution and diversity in the southern Gulf of Mexico Distribución y diversidad de apendicularias en el sur del golfo de México

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    César Flores-Coto

    2010-04-01

    Full Text Available The diversity and distribution of appendicularians on the continental shelf and upper part of the oceanic sea in the southern Gulf of Mexico is analyzed here for the first time. Samples were collected in September 2003 using a fine mesh net. Twenty species were identified, of which Fritillaria venusta and Pelagopleura oppressa are first records for the Gulf of Mexico. Oikopleura species occur throughout the area, with greatest abundances in the upwelling waters of the inner shelf off Yucatán and Campeche. The greatest abundances of Fritillaria species and of the other genera were recorded in the mid, outer shelf, and oceanic areas of Campeche and Tabasco that are influenced by continental water discharges and an oceanic gyre. Diversity and abundance varied in differing directions, with high abundance and low diversity characterizing the costal areas and low abundance and high diversity in the mid, outer shelf, and oceanic areas. The distribution of appendicularian species appears to be influenced by upwelling currents, gyres, water column depth, continental water discharges, salinity, and temperature. However, it could be assumed that the reasons behind these physical environmental factors include the food supply, a short life cycle, and high reproductive efficiency, factors that are commonly associated with distribution.Se analiza por primera vez la diversidad y distribución de las apendicularias en la capa superficial de la columna de agua de la plataforma continental del sur del Golfo de México. Las muestra se recolectaron en septiembre de 2003 usando una malla fina- Se identificaron 22 especies de las cuales Fritillaria venusta y Pelagopleura opresa tienen aquí su primer registro para el Golfo de México. Las especies de Oikopleura ocurrieron en toda el área con sus mayores abundancias en aguas de surgencia que corren sobre la plataforma de Yucatán y Campeche. La mayor abundancia de las especies de Fritillaria y de los otros g

  20. Mexico.

    Science.gov (United States)

    1993-01-01

    The background notes on Mexico provide text and recent statistical information on the geography, population, government, economy, and foreign relations, specifically the North American Free Trade Agreement with US. The 1992 population is estimated at 89 million of which 60% are mestizo (Indian-Spanish), 30% are American Indian, 9% are Caucasian, and 1% are other. 90% are Roman Catholic. There are 8 years of compulsory education. Infant mortality is 30/1000 live births. Life expectancy for males is 68 years and 76 years for females. The labor force is comprised of 30% in services, 24% in agriculture and fishing, 19% in manufacturing, 13% in commerce, 7% in construction, 4% in transportation and communication, and .4% in mining. There are 31 states and a federal district. Gross domestic product (GDP) per capita was $3200 in 1991. Military expenditures were .5% of GDP in 1991. The average inflation rate is 19%. Mexico City with 20 million is the largest urban center in the world. In recent years, the economy has been restructured with market oriented reforms; the result has been a growth of GDP of 3.6% in 1991 from 2% in 1987. Dependence on oil exports has decreased. There has been privatization and deregulation of state-owned companies. Subsidies to inefficient companies have been stopped. Tariff rates were reduced. The financial debt has been reduced and turned into a surplus of .8% in 1992. Mexico's foreign debt has been reduced from its high in 1987 of $107 billion. Agricultural reforms have been ongoing for 50 years. Land was redistributed, but standards of living and productivity have improved only slightly. Rural land tenure regulations have been changed, and other economic reforms are expected. Mexico engages in ad hoc international groups and is selective about membership in international organizations.

  1. Mexico

    International Nuclear Information System (INIS)

    2003-06-01

    This document summarizes the key energy data for Mexico: 1 - energy organizations and policy: Ministry of energy (SENER), Comision Reguladora de Energia (CRE), Ministry of Finances, Ministry of trade and industrial development (SECOFI), national commission for energy savings (CONAE); 2 - companies: federal commission of electricity (CFE), Minera Carbonifera Rio Escondido (MICARE - coal), Pemex (petroleum); 3 - energy production: resources, electric power, petroleum, natural gas; 4 - energy consumption; 5 - stakes and perspectives. Some economic and energy indicators are summarized in a series of tables: general indicators, supply indicators (reserves, refining and electric capacity, energy production, foreign trade), demand indicators (consumption trends, end use, energy independence, energy efficiency, CO 2 emissions), energy status per year and per energy source. (J.S.)

  2. Antecedent and progress of the project on the treatment of chimney gases with electrons in Mexico

    International Nuclear Information System (INIS)

    Pina V, G.

    1991-10-01

    After the realization of the chimney gases treatment seminar with electrons, organized jointly among the National Institute of Nuclear Research (ININ) and the International Atomic Energy Agency (IAEA), in August of 1990 and following one of the received recommendations, it was elaborated an economic technical feasibility study of this process in Mexico, using technical data of a thermoelectric power station of Federal Commission of Electricity, where is being consumed fuel oil. This study is good to know some technical parameters of a plant of this process, proposed to settle in Mexico, so as some economic estimates of installation and operation costs of this plant; also, it is traced about the construction of a demonstration plant of the process, with capacity of 20,000 m 3 N/h, using the same data of the thermoelectric power station considered previously, as the first step in the scaling of this process toward industrial level. (Author)

  3. Avistamientos recientes de águila real (Aquila chrysaetos en la sierra El Mechudo, Baja California Sur, México Recent sightings of Golden Eagle (Aquila chrysaetos in the Sierra El Mechudo, Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Israel Guerrero-Cárdenas

    2013-03-01

    Full Text Available Se reportan nuevos avistamientos de águila real durante 3 años consecutivos (2007-2010 en 2 localidades de la sierra El Mechudo (El Saucito y las Tarabillas, Baja California Sur. Los avistamientos, se realizaron con cámaras-trampa y por observación directa. En BCS, los registros más recientes son de la sierra de la Laguna en el 2000. Se han detectado al menos 4 individuos diferentes, entre juveniles y adultos. La importancia de estos nuevos avistamientos reside en que por primera vez se registra la presencia del águila real en cuerpos de agua dulce.We report new sightings of Golden Eagle for 3 consecutive years (2007-2010 at 2 localities of the Sierra El Mechudo (El Saucito and Tarabillas, Baja California Sur. These sightings were recorded with camera traps and by direct observation. Most recent records from BCS are for the Sierra de la Laguna in 2000. At least 4 different individuals, both juveniles and adults, have been recorded. The importance of these new sightings is that for the first time we registered Golden Eagles infresh water wetlands.

  4. New and noteworthy waterfowl records at artificial wetlands from Baja California Sur, Mexico Registros nuevos y sobresalientes de anátidos en humedales artificiales de Baja California Sur, México

    Directory of Open Access Journals (Sweden)

    Roberto Carmona

    2011-06-01

    Full Text Available We present 9 recent records of rare waterfowls in Baja California Sur, all of them in artificial wetlands: 3 freshwater sites and 1 concentration area for a saltworks. We present the first records of the Ross's Goose in the state. The remaining 8 species are: Black-bellied Whistling-Duck (breeding, Fulvous Whistling-Duck, Greater White-fronted Goose, Snow Goose, Cackling Goose, Tundra Swan, Mallard and Hooded Merganser. To this list we added an historical compilation of the records of these species in artificial sites of the state. The artificial wetlands are no replacement for their natural counterparts, they are nevertheless an important part of the region's landscape mosaic. As the records of the present work exemplify, this man-made habitat increases the regional species richness, and should be considered as important areas that need to be protected.Presentamos registros recientes de 9 especies de anátidos raros en Baja California Sur, todos ellos realizados en humedales creados por el hombre: 3 sitios dulceacuícolas y 1 área de concentración para la producción de sal. Se incluyen los primeros registros del ganso de Ross (Chen rossii para el estado. Las 8 especies restantes son: Dendrocygna autumnalis (anidación, D. bicolor, Anser albifrons, Chen caerulesens, Branta hutchinsii, Cygnus columbianus, Anas platyrhynchos y Lophodytes cucullatus. A la lista, agregamos una recopilación histórica de los registros de estas especies en humedales artificiales del estado. Aunque estos sitios no deben sustituir a sus contrapartes naturales, actualmente forman parte del mosaico paisajístico que ofrece la región; adicionalmente, incrementan la riqueza de especies de la región, por lo que es necesario brindarles protección.

  5. Caracterización de Tagetes filifolia del centro-sur de México por morfometría de los aquenios Characterization of Tagetes filifolia from central-south Mexico by morphometric achene traits

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    Carlos A. Núñez-Colín

    2011-06-01

    Full Text Available Tagetes filifolia Lag. es una especie ruderal ampliamente distribuida en México de la cual se empieza a conocer su variabilidad morfológica, como parte de una serie de estudios relacionados con su posible domesticación para obtener biopesticidas. Para ampliar el conocimiento sobre este recurso vegetal se definieron mediante 11 características del aquenio 104 recolecciones del centro-sur de México empleando una técnica digital de imágenes. Se identificaron 5 diferentes grupos morfológicos. El Grupo I presentó recolecciones con aquenios pequeños y anchos; el Grupo II, aquenios grandes y anchos; el Grupo III, aquenios pequeños y alargados; el Grupo IV, aquenios grandes y alargados, y el Grupo V, aquenios grandes pero más alargados que los del Grupo IV. Las variables más discriminantes fueron el índice de alargamiento, índice de compactación, índice de redondez, relación eje menor/ eje mayor para la raíz canónica 1, y perímetro longitudinal y longitud del eje mayor para la raíz canónica 2. La gran variabilidad de las características de la forma y tamaño de los aquenios de T. filifolia se pudo agrupar en 5 morfotipos, los cuales no estuvieron presentes en toda la región centro-sur de México.Tagetes filifolia Lag. is a ruderal species widely distributed in Mexico from which is starting to make knowledge about its morphological variability as a part of a study sequence related with its possible domestication to obtain biopesticides. For acquiring more knowledge on this plant resource, 104 accessions from central-south Mexico were morphologically characterized by 11 achene traits employing a digital images technique. Five different morphologic groups were identified. Group I had accessions with small and wide achenes, group II had big and wide achenes, group III had small and long achenes, group IV had big and long achenes, and group V had big achenes but longer than group IV. The most discriminant variables were elongation

  6. Distribución espacial y temporal de aves playeras (Orden: Charadriiformes en Laguna San Ignacio, Baja California Sur, México Temporal and spatial distribution of shorebirds (Charadriiformes at San Ignacio Lagoon, Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Luis Francisco Mendoza

    2013-03-01

    Full Text Available Con la pérdida o degradación de humedales han declinado las poblaciones de algunas especies tales como las aves playeras. En vista de que ha crecido el interés internacional por los estudios ecológicos sobre estas especies, se determinó la abundancia, distribución y riqueza espacio-temporal de las aves playeras en Laguna San Ignacio, Península de Baja California. Se realizaron 12 censos mensuales (octubre 2007-septiembre 2008 en el perímetro interno de la laguna; la cual se dividió en cuatro zonas, dos al norte y dos al sur. Temporalmente las abundancias menores se presentaron en mayo (1 585 aves y las mayores en octubre (47 410. Las especies más abundantes fueron: el picopando canelo (Limosa fedoa; 55% de los registros totales, el playero occidental (Calidris mauri; 23% y el playero pihuiuí (Tringa semipalmata; 10%. Estas especies fueron más abundantes en otoño. El picopando canelo y el playero pihuiuí estabilizaron sus números en invierno y primavera y estuvieron presentes en verano en bajos números, el playero occidental mostró oscilaciones notorias. Se presentan los primeros reportes del playero rojizo del Pacifico (Calidris canutus roselaari para la zona. La riqueza y abundancia estuvieron influenciadas temporal y espacialmente por las aves migratorias. Las mayores abundancias se presentaron al sur de la laguna, probablemente por la disponibilidad del alimento. Los resultados presentes permitieron incluir al área en la Red Hemisférica de Reservas para las Aves Playeras como sitio de importancia internacional.Baja California Peninsula has several wetlands that represent important ecosystems for shorebirds. San Ignacio Lagoon is one of these sites, and supports 10% of the total abundance of shorebirds reported in this Peninsula. Since there is few information about this group in this area, we studied spatial and temporal changes in abundance and distribution of shorebirds in San Ignacio Lagoon. For this, we conducted twelve

  7. Fauna de arañas del suelo de una comunidad árida-tropical en Baja California Sur, México Ground surface spider fauna in an arid tropical community in Baja California Sur, Mexico

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    María Luisa Jiménez

    2010-08-01

    Full Text Available Se describe la temporalidad y diversidad de arañas del suelo del matorral sarcocaule en la región del Cabo en Baja California Sur. Durante 1991-1992 se realizaron colectas semanales por medio de trampas de caída. Se capturaron 4 322 ejemplares de 53 especies. Las familias con mayor abundancia fueron Miturgidae (42.2%, Oonopidae (23.5%, Caponiidae (8.0% y Gnaphosidae (7.9%. Las especies más abundantes fueron Syspira tigrina Chamberlin (37.1%; Oonops nov. sp. (13.7%, Scaphiella hespera Chamberlin (7.8% y Tarsonops sternalis Chamberlin (5.2%, que constituyeron el 63.7% del total de individuos. Gnaphosidae fue la más rica en especies (11, seguida por Salticidae (7. La riqueza de especies fue constante durante todo el año, con un ligero ascenso en el verano (29 y una ligera disminución en el invierno (24. La diversidad por estación del año se mantuvo en un intervalo de H'= 3.3 -3.7. La abundancia relativa se incrementó en primavera y otoño. La mayor riqueza específica se encontró en otoño. La abundancia relativa y la diversidad de arañas se pueden considerar altas, a pesar del fuerte dominio de la familia Miturgidae. En la mayoría de las especies, la distribución mostró una marcada estacionalidad.Seasonal distribution, specific richness, and diversity of xeric shrub ground spiders were studied at a site in the Cape Region. Weekly collections of spiders were made in 1991-1992 using pit-fall traps. We captured 4 322 specimens in 53 families. Families with the highest number of individuals were: Miturgidae (42% Oonopidae (23.5%, Caponiidae (8.0%, and Gnaphosidae (7.9%. The most abundant species were Syspira tigrina Chamberlin (37.1%; Oonops nov. sp. (13.7%, Scaphiella hespera Chamberlin (7.8%, and Tarsonops sternalis Chamberlin (5.2%, representing 63.7% of the total specimens captured. Gnaphosidae was the richest in species (11 followed by Salticidae (7. Species richness was nearly constant during all the year, with a small increase in

  8. Response to exploitation (1982-2002) of the Los Azufres, Michoacan (Mexico) geothermal field. Part II: South Zone; Respuesta a la explotacion (1982-2003) del yacimiento geotermico de Los Azufres, Michoacan (Mexico). Parte II: Zona Sur

    Energy Technology Data Exchange (ETDEWEB)

    Arellano G, Victor Manuel [Instituto de Investigaciones Electricas, Cuernavaca, Morelos, (Mexico); Torres R, Marco Antonio [Comision Federal de Electricidad, Morelia, Michoacan (Mexico); Barragan R, Rosa Maria [Instituto de Investigaciones Electricas, Cuernavaca, Morelos, (Mexico); Sandoval M, Fernando [Comision Federal de Electricidad, Morelia, Michoacan (Mexico)

    2005-06-01

    The paper describes the thermodynamic evolution of fluids in the Los Azufres geothermal field's southern zone reservoir, as a response to exploitation from 1982 to 2002. Thermodynamic conditions for the reservoir fluids were estimated with production data using the WELFLO heat-and-flow well simulator. In the southern zone, initial fluid thermodynamic conditions indicated that compressed liquid, two-phase fluids and vapor occurred in the reservoir, depending on the well depths. The fist response to exploitation consisted in a pressure drop an enthalpy increase. For the long term, the following patterns have been identified: pressure and mass flow-rate drop, boiling, cooling, vapor production and in some wells affected by injection an increase in both pressure and mass flow rate. The isotopic results of well fluids in the southern zone showed the occurrence of two processes. The first, with a positive slope, indicates a mixing of reservoir and injection fluids and mainly affects wells Az-2, Az-16, Az-33, Az-36 and Az-46. The second, with a negative slope, results from the original processes of reservoir steam separation and partial condensation. [Spanish] En este trabajo se presenta un estudio sobre la evolucion termodinamica de los fluidos de la zona sur del yacimiento de Los Azufres, como respuesta a la extraccion e inyeccion de fluidos, desde el inicio de su explotacion en 1982 hasta el ano 2002. Las condiciones termodinamicas de los fluidos del yacimiento se estimaron mediante el simulador de flujo de fluidos y calor en pozos WELFLO, a partir de datos de produccion. Las condiciones termodinamicas iniciales de los fluidos de la zona sur, indicaron la existencia de liquido comprimido, dos fases con liquido dominante y dos fases con vapor dominante, dependiendo de la profundidad de los pozos. La respuesta inicial de la zona sur a la explotacion consistio en una disminucion de la presion y un aumento en la entalpia mientras que a mas largo plazo se han observado

  9. Electron multiplier for the measurement of an ion current on a mass spectrometer; Multiplicateur d'electrons pour la mesure de courant d'ions sur un spectrometre de masse

    Energy Technology Data Exchange (ETDEWEB)

    Lohez, P; Nief, G [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1957-07-01

    The apparatus described is designed to measure weak ion currents received at the collector of a mass spectrometer. The report describes successively the study of electron paths in the multiplier by the method of analogy, using rubber membranes, and the practical details of construction of the apparatus. The variation with surface treatment of the secondary emission coefficient of the alloy CuBe containing 2 per cent Be, which makes up the dynodes, and the influence of the voltage on the gain per stage, are discussed. Results of tests regarding: the influence of the ion mass on the gain, the background of the instrument and the energy distribution of the impulses coming out on a high gain multiplier (q.q. 10{sup 7}) are given. Finally the performances of the multiplier are reported. 1- For a low gain (10{sup 4}), precision and reproducibility comparable to the electrometer valve, sensitivity 100 times greater, currents capable of detection 10{sup -17} Ampere. 2- For a high gain (10{sup 7}) and measurement by impulse counting, currents capable of detection 10{sup -19} Ampere. Mounting difficult to use on a mass spectrometer. (author) [French] L'appareil decrit est destine a la mesure des faibles courants d'ions re s au collecteur d'un spectrometre de masse. Le rapport decrit successivement l'etude des trajectoires des electrons dans le multiplicateur, par la methode analogique de la menbrane en caoutchouc, et la realisation pratique de l'appareil. La variation du coefficient d'emission secondaire de l'alliage CuBe a 2 pour cent de Be, constituant les dynodes suivant le traitement des surfaces, et l'influence de la tension sur le gain par etage sont discutees. Des resultats d'essais concernant: l'influence de la masse des ions sur le gain, le bruit de fond de l'appareil et la repartition en energie des impulsions de sortie sur un multiplicateur a gain eleve (q.q. 10{sup 7}) sont donnes. Enfin, sont rapportees les performances du multiplicateur. 1- pour un gain faible

  10. Residential tourism and migration of foreign retirees in Mexico: A case study on the environmental impacts and public services in Baja California Sur

    Directory of Open Access Journals (Sweden)

    Diego Armando Casas-Beltrán

    2013-07-01

    Full Text Available Migration of foreign retirees in Mexico has increased, especially in Los Cabos, where settlements trailer type are increasing and are moving into rural coastal areas of high ecological value, without the knowledge of impacts that may result. Thus the aim of this paper is to contribute to the understanding of this type of settlement, by documenting a case study, the characteristics of their community, their environmental impacts and implications for the provision of public services. We conclude that the town will become a short-term retreat site, because while it does not have high densities, its environmental implications are significant and broad coverage. Its current demand for services is minimal, but may cause conflicts in the future, especially with the water

  11. Using Drone Imagery and Photogrammetry to Map Basin Stratigraphy and Structures Exposed in Mine, Road, and Arroyo Outcrops, Santa Rosalia, Baja California Sur, Mexico

    Science.gov (United States)

    Banes, A.; Alvarez Ortega, K. G.; Henry, M.; Niemi, T.

    2017-12-01

    During the 2017 Baja Basins Research Experience for Undergraduates (REU), a DJI Phantom 3 Advanced Quadcopter drone equipped with a GPS-enabled, 12 Megapixel camera was manually flown to collect aerial photographs of several geologic outcrops on the Minera Boléo and Lucifer mines in central Baja California Sur. The strip mine faces, roadcuts, and arroyos exposed Neogene to Quaternary sediments of the Santa Rosalía basin including the basal Cu-Zn-Mn-Co-bearing Miocene Boléo Formation that is actively being mined. It is overlain by Plio-Quaternary marine and non-marine deposits. Photographs were collected with a 70% overlap and processed into geographically-referenced, orthophotomosaics using Agisoft Photoscan. The output models have an adequate resolution for viewing bedding and fault characteristics. Measurements can be made inside the 3D models, making drones a useful tool for studying the geometry of stratigraphic, structural, and geomorphologic features. The studied sites included: 1) roadcuts on Mesa Soledad that exposed oblique-slip faults and syntectonically deposited non-marine and marine conglomerates and sandy, fossil-rich Pliocene beach sediment; 2) outcrops of the Boléo Fm in the Texcoco mine area that showed the detailed stratigraphic relationship between ore seams (mantos) and faults; 3) outcrops where sandstone samples were collected for detrital zircon geochronology; 4) strip mine 3120 that exposed faults and folds in the Boléo Formation; and 5) faults in Miocene volcanic rocks in the Arroyo Infierno near the Lucifer mine. This study shows that photogrammetry and modeling of geologic structures exposed in mine and road outcrops can provide useful information for reconstructing basin architecture and clarifying structural evolution of the Santa Rosalia Basin.

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

    Science.gov (United States)

    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.

  13. A stepped wedge, cluster-randomized trial of a household UV-disinfection and safe storage drinking water intervention in rural Baja California Sur, Mexico.

    Science.gov (United States)

    Gruber, Joshua S; Reygadas, Fermin; Arnold, Benjamin F; Ray, Isha; Nelson, Kara; Colford, John M

    2013-08-01

    In collaboration with a local non-profit organization, this study evaluated the expansion of a program that promoted and installed Mesita Azul, an ultraviolet-disinfection system designed to treat household drinking water in rural Mexico. We conducted a 15-month, cluster-randomized stepped wedge trial by randomizing the order in which 24 communities (444 households) received the intervention. We measured primary outcomes (water contamination and diarrhea) during seven household visits. The intervention increased the percentage of households with access to treated and safely stored drinking water (23-62%), and reduced the percentage of households with Escherichia coli contaminated drinking water (risk difference (RD): -19% [95% CI: -27%, -14%]). No significant reduction in diarrhea was observed (RD: -0.1% [95% CI: -1.1%, 0.9%]). We conclude that household water quality improvements measured in this study justify future promotion of the Mesita Azul, and that future studies to measure its health impact would be valuable if conducted in populations with higher diarrhea prevalence.

  14. Border Environmental Education Resource Guide: Southern New Mexico, South Texas, Northern Chihuahua, Northern Coahuila, Northern Nuevo Leon, Northern Tamaulipas = Guia de Recursos de Educacion Ambiental en la Frontera: Sur de Nuevo Mexico, Sur de Texas, Norte de Chihuahua, Norte de Coahuila, Norte de Nuevo Leon, Norte de Tamaulipas.

    Science.gov (United States)

    Meissner, David, Comp.

    This guide provides educators and residents of the border with useful information about environmental education program offerings along the eastern half of the United States-Mexico border. The programs listed in the guide represent a broad range of educational efforts focused on understanding the environment and solving environmental problems in…

  15. Antecedent and progress of the project on the treatment of chimney gases with electrons in Mexico; Antecedentes y avance del proyecto de tratamiento de gases de chimenea con electrones en mexico

    Energy Technology Data Exchange (ETDEWEB)

    Pina V, G

    1991-10-15

    After the realization of the chimney gases treatment seminar with electrons, organized jointly among the National Institute of Nuclear Research (ININ) and the International Atomic Energy Agency (IAEA), in August of 1990 and following one of the received recommendations, it was elaborated an economic technical feasibility study of this process in Mexico, using technical data of a thermoelectric power station of Federal Commission of Electricity, where is being consumed fuel oil. This study is good to know some technical parameters of a plant of this process, proposed to settle in Mexico, so as some economic estimates of installation and operation costs of this plant; also, it is traced about the construction of a demonstration plant of the process, with capacity of 20,000 m{sup 3}N/h, using the same data of the thermoelectric power station considered previously, as the first step in the scaling of this process toward industrial level. (Author)

  16. Screening of polyhydroxyalkanoate-producing bacteria and PhaC-encoding genes in two hypersaline microbial mats from Guerrero Negro, Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Carolina A. Martínez-Gutiérrez

    2018-05-01

    Full Text Available Hypersaline microbial mats develop through seasonal and diel fluctuations, as well as under several physicochemical variables. Hence, resident microorganisms commonly employ strategies such as the synthesis of polyhydroxyalkanoates (PHAs in order to resist changing and stressful conditions. However, the knowledge of bacterial PHA production in hypersaline microbial mats has been limited to date, particularly in regard to medium-chain length PHAs (mcl-PHAs, which have biotechnological applications due to their plastic properties. The aim of this study was to obtain evidence for PHA production in two hypersaline microbial mats of Guerrero Negro, Mexico by searching for PHA granules and PHA synthase genes in isolated bacterial strains and environmental samples. Six PHA-producing strains were identified by 16S rRNA gene sequencing; three of them corresponded to a Halomonas sp. In addition, Paracoccus sp., Planomicrobium sp. and Staphylococcus sp. were also identified as PHA producers. Presumptive PHA granules and PHA synthases genes were detected in both sampling sites. Moreover, phylogenetic analysis showed that most of the phylotypes were distantly related to putative PhaC synthases class I sequences belonging to members of the classes Alphaproteobacteria and Gammaproteobacteria distributed within eight families, with higher abundances corresponding mainly to Rhodobacteraceae and Rhodospirillaceae. This analysis also showed that PhaC synthases class II sequences were closely related to those of Pseudomonas putida, suggesting the presence of this group, which is probably involved in the production of mcl-PHA in the mats. According to our state of knowledge, this study reports for the first time the occurrence of phaC and phaC1 sequences in hypersaline microbial mats, suggesting that these ecosystems may be a novel source for the isolation of short- and medium-chain length PHA producers.

  17. Effect of Corrosion in the CS Operation Indoors of the Electronics Industry in the Northwest of Mexico

    Directory of Open Access Journals (Sweden)

    González-Kleyton J.

    2012-10-01

    Full Text Available The electronics industry is an important factor in Mexico's economy, representing 80% of companies in the northwest of this country, where we find Mexicali (as arid zone and Tijuana (as marine region, two cities in the state Baja California, adjacent to cities in California, USA, on the border of Mexico-United States. A study was conducted indoors in three plants of each city mentioned above, to determine if corrosion phenomena has an effect on the lifetime and productive performance of the CS. The results show that major air pollutants present indoors, that generate aggressive environments in Mexicali are the sulfides, while in Tijuana are the chlorides, which affect the functioning of the CS, and originate electrical failures in industrial equipments and machines.

  18. Seasonal changes in a fish assemblage associated with mangroves in a coastal lagoon of Baja California Sur, Mexico Cambios estacionales de la comunidad de peces asociada a zonas de manglar en una laguna costera de Baja California Sur, México

    Directory of Open Access Journals (Sweden)

    Jesús Rodríguez-Romero

    2011-07-01

    Full Text Available The fish assemblage in a coastal lagoon with mangroves known as "Rancho Bueno" was determined and associated with environmental parameters. We used an experimental otter trawl net to catch the fish, and 62 fish species were identified from 48 genera and 30 families. The most abundant species were: Etropus crossotus, Eucinostomus gracilis, Paralabrax maculatofasciatus, Sphoeroides annulatus, and Eucinostomus dowii. The water temperature changed seasonally, being warm from July through December and cold from January through June. We found more fish species during the warm season than during the cold season. The southern area of the coastal lagoon had the highest diversity and species richness. The small size of the fishes registered confirms the ecological role of coastal lagoons as nursery areas that offer protection and feeding to commercially important fish near Bahía Magdalena, Mexico.Se determinó la estructura de peces asociada a factores ambientales en una laguna costera con manglar denominada "Rancho Bueno". Se utilizó una red de arrastre experimental para la captura y se identificaron 62 especies de peces de 48 géneros y 30 familias. Las especies más importantes fueron Etropus crossotus, Eucinostomus gracilis, Paralabrax maculatofasciatus, Sphoeroides annulatus y Eucinostomus dowii. La temperatura del agua varió estacionalmente, siendo cálida de julio a diciembre y fría de enero a junio. Se registró un mayor número de especies de peces durante la época cálida comparada con la época fría. La zona sur de la laguna costera presentó una mayor diversidad y riqueza específica. El menor tamaño de los peces registrados, confirma el papel ecológico de las lagunas costeras, consideradas como áreas de crianza las cuales proporcionan protección y alimentación a los peces de importancia comercial cerca de Bahía Magdalena, México.

  19. Absorptive Capacities of Local Enterprises from the Electric-Electronics Sector In the State of Tamaulipas, Mexico

    Directory of Open Access Journals (Sweden)

    Francisco García Fernández

    2012-02-01

    Full Text Available The paper analyzes the absorptive capacities of a group of enterprises from the electric-electronics sector in the state of Tamaulipas Mexico. First, the literature on absorptive capabilities is reviewed, adopting an evolutionist approach. Then, an analysis of the sector is carried out in order to verify the recent changes made in various indicators – value of the total products by the selected states, job generation and productivity rates – based on data from the last three economic censuses. Finally, an analysis of the three selected enterprises’ absorptive capacities is addressed from a case study perspective, making our own interpretation of the construct based on the integration of the different analyzed proposals.

  20. CTD, salinity, temperature, oxygen, and depth data for Cruise DP01 from the R/V Point Sur in the Viosca Knoll, Gulf of Mexico, 2015-05-01 to 2015-05-08 (NCEI Accession 0142203)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Deep water sampling of in situ seawater and associated fauna (cruise DP01, May 1-8, 2015) aboard the R/V Point Sur for an area encompassing roughly 28°N to 29°N...

  1. 77 FR 22760 - Proposed Information Collection; Comment Request; Southeast Region Gulf of Mexico Electronic...

    Science.gov (United States)

    2012-04-17

    ... electronic logbook memory chip will be removed from the unit and downloaded at the contractor site in College Station, Texas. A new logbook memory chip will replace the removed memory chip, a process taking less than...

  2. Nuevos registros del parásito Probopyrus pacificensis (Isopoda: Bopyridae en el sur de Nayarit y norte de Jalisco, México New records of the parasite Probopyrus pacificensis (Isopoda: Bopyridae in southern Nayarit and northern Jalisco, Mexico

    Directory of Open Access Journals (Sweden)

    Alberto Ocaña-Luna

    2009-04-01

    Full Text Available Se presentan nuevos registros de Probopyrus pacificensis en el arroyo San Francisco, sur de Nayarit y en el arroyo Palo María, norte de Jalisco en el Pacífico mexicano, parasitando a camarones de agua dulce de la especie Macrobrachium tenellum.New observations of Probopyrus pacificensis were recorded in Arroyo San Francisco, southern Nayarit, and Arroyo Palo María, northern Jalisco, in the Mexican Pacific, infesting the freshwater shrimp Macrobrachium tenellum.

  3. River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report Habilidad para cruzar ríos en Ateles geoffroyi y Alouatta pigra en el sur de México: Un reporte preliminar

    Directory of Open Access Journals (Sweden)

    ÓSCAR M CHAVES

    2010-01-01

    Full Text Available During a nine month field study, we assess the ability of spider (Ateles geoffroyi and howler (Alouatta pigra monkeys to cross a large Mesoamerican river, and if this behavior is related to deforestation and/or human population size on the disturbed riverbank. The study was conducted along the Lacantún River, southern Mexico, which .divides the Montes Azules Biosphere Reserve and the Marqués de Comillas disturbed region. We collected data on river crossings by both monkey species from 428 hours of surveys along the river and 58 questionnaires completed by knowledgeable local informants. Furthermore, we determined the frequency of river crossing by the two species, location and direction of river-crossing, bank-to-bank river width at the location of reported sighting, and the relationship with deforestation rates and/or human population size in the Marqués de Comillas region. We observed on two separate occasions spider monkeys crossing the river from the disturbed area to the reserve, but howler monkeys were never observed crossing. Interviews suggest, however, that howler monkeys cross the river more frequently than spider monkeys (13 versus 8 reports, respectively. We found that bank-to-bank river width was smaller at river crossing locations in each study site than along the river in general. Furthermore, we found no relationship between river crossings and some human pressures such as deforestation and population size in the region. Whatever the underlying pressures that drive river-crossing events in these two primate species in this region, they appear to be sufficiently strong to stimulate this behavior to occur from time to time.Durante nueve meses evaluamos si los monos araña (Ateles geoffroyi y los monos aulladores (Alouatta pigra tenían la capacidad para cruzar uno de los ríos más grandes de México, y si este comportamiento estaba relacionado con la deforestación y/o el tamaño de las poblaciones humanas en la margen alterada

  4. Apprentissage en ligne et sur le tas au Mexique | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Laura Dávila est de retour sur les bancs de l'école. Installée à son bureau dans la classe virtuelle @Campus Mexico, cette fonctionnaire mexicaine se renseigne sur son propre gouvernement — ses ministères et son cadre juridique, les lois qui encadrent l'accès à l'information et la responsabilité de la fonction publique, ...

  5. A mixed analog-digital radiation hard technology for high energy physics electronics DMILL (Durci Mixte sur Isolant Logico-Linéaire)

    CERN Document Server

    Beuville, E; Borgeaud, P; Fourches, N T; Rouger, M; Blanc, J P; Bruel, M; Delevoye-Orsier, E; Gautier, J; Du Port de Pontcharra, J; Truche, R; Dupont-Nivet, E; Flament, O; Leray, J L; Martin, J L; Montaron, J; Borel, G; Brice, J M; Chatagnon, P; Terrier, C; Aubert, Jean-Jacques; Delpierre, P A; Habrard, M C; Potheau, R; CERN. Geneva. Detector Research and Development Committee

    1992-01-01

    The high radiation level expected in the inner regions of the high luminosity LHC detectors (gamma and neutron) will require radiation hardened electronics. A consortium between the CEA (Commissariat a l'Energie Atomique) and Thomson TMS (Thomson Composants Militaires et Spatiaux) has been created to push for the development and the industrialization of a nascent technology which looks particularly adapted to the needs of HEP electronics. This technology, currently under development at the LETI(CEA), uses a SIMOX substrate with an epitaxial silicon film. It includes CMOS, JFETs and vertical bipolar transistors with a potential multi-megarad hardness. The CMOS and bipolar transistors constitute a rad-hard BiCMOS which will be useful to design analog and digital high-speed architectures. JFETs, which have intrinsically high hardness behaviour and low noise performances even at low temperature will enable very rad-hard, low noise front end electronics to be designed. Present results, together with the improvemen...

  6. Etude, par principes premiers, des effets de la correlation entre electrons sur les proprietes electroniques et magnetiques de polymeres pontes et de supraconducteurs a haute temperature critique

    Science.gov (United States)

    Pesant, Simon

    Description of complex systems by Density functional theory is treated in this thesis. First, the Density functional theory and a few functionals used to simulate cristals are presented. Specifically, the LDA and GGA functionnals are described and their limits are exposed. Furthermore, the Hubbard model as well as the LDA+U functionnal are addressed in this chapter. These methods enable the study of highly correlated materials. Then, results obtained on polymers are summarized in two articles. The first one treats the band gap variation of ladder-type polymers compared to non ladder type ones. The second article considers small band gap polymers. In this case, it will be shown that an hybrid functional, which contains exact exchange, is required to describe the electronic properties of the polymers under study. Finally, the last chapter address the study of cuprates superconductors. The LDA+U can account for the localization of electrons in copper orbitals. Consequently, a study of the impact of this functionnal on electronic properties of cuprates is conducted. The chapter is ended by an article treating magnetic orders in doped La 2CuO4. Supplementary materials of the second article and a description of the theory of superconductivity of Bardeen, Cooper and Schrieffer are put in annex. Keywords : Electronic correlation, DFT, LDA+U, cuprates, polymers, magnetic orders

  7. Manejo de un sitio de anidación para la conservación de Sternula antillarum (Charadriiformes: Laridae en Baja California Sur, México Nesting site management for Sternula antillarum (Charadriiformes: Laridae conservation in Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Edgar Amador

    2008-06-01

    Full Text Available El gallito marino menor (Sternula antillarum es una especie sujeta a protección especial, que anida en colonias pequeñas en hábitats costeros. Las mareas altas son un problema para la anidación de S. antillarum en Baja California Sur, pues causan la inundación de algunas colonias. Para reducir el impacto potencial del flujo de marea alta sobre los nidos, se elevó 20 cm el nivel del suelo por medio de una plataforma elevada construida con llantas de desecho rellenas y cubiertas de arena. La ocupación de este sitio por S. antillarum se monitoreó durante las temporadas reproductivas de 1990, y de 2002 a 2005. Las mareas altas no afectaron los nidos establecidos sobre la plataforma y la densidad de nidos sobre ella fue mayor que la que hubo en el terreno natural de la planicie costera adyacente. Este método de manejo del hábitat de anidación de S. antillarum es una buena alternativa en los sitios con riesgo por flujo de marea.The Least Tern (Sternula antillarum is a threatened seabird species that breeds in small colonies on coastal habitats. High tides constitute a problem for their reproduction in Baja California Sur, since they cause flooding of some colonies. To reduce the potential impact of high tides on the nests, the level of the ground was elevated by 20 cm, through an elevated platform that was built by using discarded tires filled and covered with sand. The occupation of this site by Least Terns was monitored during the breeding seasons of 1990 and from 2002 to 2005. High tides did not affect the nests established on the platform and density of nests on this platform was higher than on the natural adjacent mudflat area. This nesting habitat management method for the Least Tern is an appropriate alternative for those sites affected by high tides.

  8. Vertebrados terrestres registrados mediante foto-trampeo en arroyos estacionales y cañadas con agua superficial en un hábitat semiárido de Baja California Sur, México Terrestrial vertebrates recorded by camera traps in areas with seasonal streams and creeks of superficial waters in a semiarid habitat of Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Erika Mesa-Zavala

    2012-03-01

    Full Text Available Los cuerpos de agua superficial (CAS permanentes o efímeros (pozas, tinajas, escurrimientos, etc. que se encuentran en depresiones del terreno, como arroyos y cañadas, son soporte fundamental para el ecosistema en zonas áridas. Mediante el uso de cámaras-trampa, en este estudio se identifican especies de vertebrados terrestres silvestres presentes en 4 sitios con agua superficial, en el extremo sur de la sierra El Mechudo, Baja California Sur, y se analiza el uso de los CAS por las especies en los periodos de actividad. En cada sitio se caracterizó el hábitat (topografía, vegetación y agua. Los 4 sitios mostraron diferencias en sus características ambientales. Se identificaron 41 especies de vertebrados terrestres (3 reptiles, 31 aves y 7 mamíferos. Se encontraron también varias especies de murciélagos que no fueron identificadas. La riqueza de especies y frecuencia de visita fue diferente en cada sitio. Con excepción de 3 especies de mamíferos, el horario de actividad fue similar en los 4 sitios. La presente investigación aporta información sobre la importancia de los CAS en zonas semiáridas, describiendo el hábitat, las especies y su comportamiento, elementos básicos para la conservación y manejo de los recursos naturales.Permanent or ephemeral water ponds (puddles, catchments, drains, and so on located on ground depressions, such as streams and creeks, are a fundamental support for ecosystems in dry areas. This study identified the species of native terrestrial vertebrates in 4 sites in the southernmost part of the Sierra El Mechudo, B.C.S., including how such species use these bodies of water based on the periods of species activity. Habitats were characterized in 4 sites (topography, vegetation, and water sources; camera-traps were placed around water ponds from March to October 2007. The 4 sites differed in their environmental characteristics. Overall, there were 41 species of terrestrial vertebrates (3 reptiles, 31

  9. Identificación de sitios de encuentro de parejas sexuales en dos ciudades de la frontera sur de México, mediante el método PLACE Identification of meeting sites of new sexual partners in two Southern border cities in Mexico using the PLACE method

    Directory of Open Access Journals (Sweden)

    Mirka Negroni-Belén

    2003-01-01

    Full Text Available OBJETIVO: Identificar sitios de encuentro de nuevas parejas sexuales en dos ciudades de la frontera sur de México. MATERIAL Y MÉTODOS: En un estudio epidemiológico descriptivo se encuestó, en mayo de 2001, a informantes clave de la comunidad en dos ciudades fronterizas del sur de México para identificar sitios de encuentro de nuevas parejas. Se visitó cada sitio reportado y se encuestó a una persona del lugar. De una submuestra de sitios, se encuestó a personas que socializaban en los mismos. RESULTADOS: Los informantes clave de la comunidad reportaron 134 sitios en Chetumal y 111 en Ciudad Hidalgo. Se obtuvo información de las características de 89 sitios en Chetumal y 42 en Ciudad Hidalgo, ambos con escasas actividades preventivas del VIH/SIDA. Cerca de 21% de usuarios encuestados reportaron haber conocido una nueva pareja en los sitios en las últimas cuatro semanas. CONCLUSIONES: Son necesarias acciones de prevención en los sitios de encuentro de nuevas parejas sexuales. Este método puede proveer información para planificar futuras intervenciones.OBJECTIVE: To identify the meeting sites of new sexual partners in two Southern border cities in Mexico. MATERIAL AND METHODS: A descriptive epidemiologic study was carried out in May 2001, by surveying key informants in two border cities. Each reported site was visited to interview a resident subject. Subjects socializing in a subsample of sites were also interviewed. RESULTS: The key informants of the community reported 134 meeting sites in Chetumal and 111 in Ciudad Hidalgo. Both sites had scarce HIV/AIDS prevention activities. Characteristics were obtained for 89 sites in Chetumal and 42 in Ciudad Hidalgo. Almost 21% of interviewees reportedly met a new sexual partner in these sites in the past four weeks. CONCLUSIONS: Preventive actions are needed in meeting sites of new sexual partners. This method may provide information to plan for future interventions.

  10. Altiplano Sur de Bolivia

    OpenAIRE

    Alvarez-Flores, Ricardo; Bommel, Pierre; Bourliaud, Jean; Chevarria Lazo, Marco; Cortes, Geneviève; Cruz, Pablo; Del Castillo, C.; Gasselin, Pierre; Joffre, Richard; Leger, Francois; Nina Laura, Juan Peter; Rambal, Serge; Rivière, Gilles; Tichit, Muriel; Tourrand, Jean-François

    2014-01-01

    Alimento de base de las poblaciones andinas desde hace milenios, la quinua se ha convertido hoy en un producto apreciado en el mercado internacional de alimentos dietéticos, orgánicos y equitativos. Este cambio lo iniciaron los mismos productores del Altiplano Sur de Bolivia hace aproximadamente unos 40 años. En medio de un desierto de altura, ellos lograron desarrollar una floreciente producción agrícola de exportación. Aunque cuentan con lucrativos nichos de mercado, los productores de quin...

  11. Effect of high energy electrons on the skin and on the underlying tissues of the rabbit. A clinical and histological study; Effets des electrons de haute energie sur la peau et les tissus sous-jacents du lapin. Etude clinique et histologique

    Energy Technology Data Exchange (ETDEWEB)

    Legeay, G; Vialettes, H; Adnet, J J; Court, L; Masse, R [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1967-07-01

    The authors consider in this report the effects of high-energy electrons on rabbit teguments and on the underlying tissues after a single high dose irradiation. After briefly considering the mechanism of interaction between the electrons and matter as a function of their energy, the authors describe the dosimetry carried out, as a function of the irradiation device. The animal received surface doses of 5700 to 22100 rads in the thigh; the electron energy varied from 21 to 30 MeV. A clinical study was carried out over a period of nine months with a view to following the evolution of the damage and the functional degradation of the underlying tissues. A histological study of the induced damage was made after a second irradiation using 30 MeV electrons to produce doses of 16400 rads. Interesting observations were made concerning the damage caused to muscular and nerve tissues. (authors) [French] Les auteurs etudient, dans ce rapport, les effets des electrons de haute energie sur les teguments du lapin et les tissus sous-jacents apres une irradiation unique a dose elevee. Apres un rappel du mecanisme de l'interaction des electrons avec la matiere en fonction de leur energie, la dosimetrie realisee est exposee en fonction du dispositif d'irradiation. Les animaux ont recu, au niveau de la cuisse, des doses en surface de 5700 a 22100 rads; les energies des electrons vont de 21 a 30 MeV. Une etude clinique des lesions, observees pendant 9 mois, decrit leur evolution ainsi que les alterations fonctionnelles des tissus sous-jacents. Une etude histologique des lesions induites a ete realisee au cours d'une seconde experience pour des doses de 16400 rads avec des electrons de 30 MeV. D'interessantes observations ont ete faites concernant les lesions des tissus musculaires et nerveux. (auteurs)

  12. Effects of atmospheric neutrons on advanced micro-electronic devices, standards and applications; Effets des neutrons atmospheriques sur les dispositifs microelectroniques avances, normes et applications

    Energy Technology Data Exchange (ETDEWEB)

    Leray, J.L. [CEA, 75 - Paris (France); Baggio, J.; Ferlet-Cavrois, V.; Flament, O. [CEA Bruyeres-le-Chatel, 91 (France)

    2005-10-01

    Since the 1980's, it is known that terrestrial cosmic rays, mainly reported as atmospheric neutrons, can penetrate the natural shielding of buildings, equipments and circuit package and induce soft errors in integrated circuits and breakdown of power devices. The high-energy neutron fluxes of interest, larger than 10 MeV, range between 10 particles/cm{sup 2}/hour at sea level and 10{sup 4} particles/cm{sup 2}/hour at typical airplanes flight altitude of 30000 feet, with modulation due to solar flares. In the 1990's, the phenomenon has pervaded as a consequence of the road-map of electronic devices especially the down-scaling of transistor dimensions, the increase of signal bandwidth and the increase of the size of DRAM and SRAM memory, stand-alone or embedded on processors and system-on-chips. Failure-in-time and soft error rate became unacceptable. Test standards and design solutions have been proposed to maintain reliability of commercial products and improve those used in special high-reliability equipments such as avionic computers. The paper describes the atmospheric neutron flux, the effects in the main classes of devices and specific cases such as neutron induced single event upset observed in CMOS vs. CMOS/SOI and some mitigation issues. In this paper, a model called CCPM (critical cross-point model) is proposed to provide critical graphs of technology node sensitivity along the scaling trend of CMOS. (authors)

  13. Learning processes and productive modernization of learning in agriculture from northwestern Mexico: Cases of commercial agriculture of the coast of Hermosillo, Sonora and organic agriculture of the southern zone of Baja California Sur

    Directory of Open Access Journals (Sweden)

    Abel O. Villa Rodríguez

    2013-01-01

    Full Text Available The process of open markets has created import changes in the Mexican agriculture sector, very much noted in the so called crop pattern, the institutional frame that guides the agro–productive commercial relationships and trade organization. The agriculture in the Northwest region, particularly La Costa de Hermosillo in the State of Sonora and southern Baja in Baja Peninsula, shows a big transformation. This corresponds to Global Production Networks (gpn, a vertical integration with intensive extraterritorial interaction resulting in a process of productive escalation that favors; learning and the creation of new competitive capabilities indispensable to comply with high standards in international markets. These capabilities are reflected in improvements in product quality, productive efficiency and the development of new functions for the players involved in the production and trade of produce. It also reflects the transition to more sophisticated productive units where players are located in other territories. This study focuses on analyzing the roll of gpn in the transformation of the agricultural sector in the northwest region of Mexico, particularly the process that took place in modernizing both places.

  14. Experimental evaluation of quantum computing elements (qubits) made of electrons trapped over a liquid helium film; Evaluation experimentale d'elements de calcul quantique (qubit) formes d'electrons pieges sur l'helium liquide

    Energy Technology Data Exchange (ETDEWEB)

    Rousseau, E

    2006-12-15

    An electron on helium presents a quantized energy spectrum. The interaction with the environment is considered sufficiently weak in order to allow the realization of a quantum bit (qubit) by using the first two energy levels. The first stage in the realization of this qubit was to trap and control a single electron. This is carried out thanks to a set of micro-fabricated electrodes defining a well of potential in which the electron is trapped. We are able with such a sample to trap and detect a variables number of electrons varying between one and around twenty. This then allowed us to study the static behaviour of a small number of electrons in a trap. They are supposed to crystallize and form structures called Wigner molecules. Such molecules have not yet been observed yet with electrons above helium. Our results bring circumstantial evidence for of Wigner crystallization. We then sought to characterize the qubit more precisely. We sought to carry out a projective reading (depending on the state of the qubit) and a measurement of the relaxation time. The results were obtained by exciting the electron with an incoherent electric field. A clean measurement of the relaxation time would require a coherent electric field. The conclusion cannot thus be final but it would seem that the relaxation time is shorter than calculated theoretically. That is perhaps due to a measurement of the relaxation between the oscillating states in the trap and not between the states of the qubit. (author)

  15. Experimental evaluation of quantum computing elements (qubits) made of electrons trapped over a liquid helium film; Evaluation experimentale d'elements de calcul quantique (qubit) formes d'electrons pieges sur l'helium liquide

    Energy Technology Data Exchange (ETDEWEB)

    Rousseau, E

    2006-12-15

    An electron on helium presents a quantized energy spectrum. The interaction with the environment is considered sufficiently weak in order to allow the realization of a quantum bit (qubit) by using the first two energy levels. The first stage in the realization of this qubit was to trap and control a single electron. This is carried out thanks to a set of micro-fabricated electrodes defining a well of potential in which the electron is trapped. We are able with such a sample to trap and detect a variables number of electrons varying between one and around twenty. This then allowed us to study the static behaviour of a small number of electrons in a trap. They are supposed to crystallize and form structures called Wigner molecules. Such molecules have not yet been observed yet with electrons above helium. Our results bring circumstantial evidence for of Wigner crystallization. We then sought to characterize the qubit more precisely. We sought to carry out a projective reading (depending on the state of the qubit) and a measurement of the relaxation time. The results were obtained by exciting the electron with an incoherent electric field. A clean measurement of the relaxation time would require a coherent electric field. The conclusion cannot thus be final but it would seem that the relaxation time is shorter than calculated theoretically. That is perhaps due to a measurement of the relaxation between the oscillating states in the trap and not between the states of the qubit. (author)

  16. Knowledge and beliefs about malaria transmission and practices for vector control in Southern Mexico Conocimientos y creencias acerca del paludismo y prácticas para el control de vectores en el sur de México

    Directory of Open Access Journals (Sweden)

    Américo David Rodríguez

    2003-04-01

    Full Text Available OBJECTIVE: To investigate the knowledge and beliefs about malaria transmission and practices for vector control in eight villages on the coastal plain of Chiapas, Mexico. MATERIAL AND METHODS: A cross-sectional survey was conducted during May and June 1995 in Chiapas, Mexico. A questionnaire to investigate family structure, knowledge on malaria transmission, preventive measures and attitudes towards seeking treatment was applied to both family heads of a sample of households. Associations were analyzed by estimating odds ratios with confidence intervals and p values, using bivariate and multivariate logistic regression methods. RESULTS: Malaria knowledge was poor and only 48% associated malaria with mosquito bites. The perceived benefit of indoor residual spraying was associated to a reduction of mosquitoes, a reduction in the numbers of cockroaches and rats, but only 3% associated it directly with the prevention of malaria transmission. Most villagers (97.6% agreed with the indoor residual spraying of insecticides. Ninety nine percent of villagers had mosquito bednets, 75.7% used them all year round. Other measures used by villagers to prevent mosquito bites were smoke and mosquito coils. Above 40% of villagers self-medicated when any member of the family had a fever episode, but 51% attended proper health services (community dispensary, private physician, health worker. About 61% used pesticides for agricultural or livestock purposes and 55% applied them themselves. Women had a greater participation as family health promoters, with 70% of the housewives being in charge of the application of self-protection preventive measures. CONCLUSIONS: Educational programs aimed at increasing awareness on the participation of mosquitoes on malaria transmission could promote community participation in malaria control in the region.OBJETIVO: Investigar el conocimiento, las creencias sobre paludismo y las prácticas para el control de vectores en ocho

  17. Women who quit maquiladora work on the U.S.-Mexico border: assessing health, occupation, and social dimensions in two transnational electronics plants.

    Science.gov (United States)

    Guendelman, S; Samuels, S; Ramirez, M

    1998-05-01

    This cohort study of 725 women examined the health, occupational, and social factors that contribute to quitting work in two transnational electronics maquiladoras (assembly plants) in Tijuana, Mexico. The estimated cumulative probabilities of quitting were 68% and 81% by 1 and 2 years of employment. After adjusting for other factors, women who had a history of smoking or surgery and those who returned to work after a paid leave due to illness were more likely to quit. In contrast, women with a history of chronic illness had lower quitting rates. The nationality of the company and the work shift also significantly influenced quitting rates, but demographic characteristics and health care visits did not have a significant effect. Women selectively leave maquiladora employment, often due to health-related events. The healthy worker effect is difficult to measure in a mobile population with high turnover.

  18. Powering Mexico

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    This article examines Mexico's demand for electricity and the market for independent power generation. The topics discussed in the article include the outlook for the 1990s for growth in Mexico's economy and energy demand, renewable energy, energy conservation, small-scale, off-grid renewable energy systems, and estimates of Mexico's market for electric power generating equipment

  19. Polyurethanes irradiation by accelerated electrons: molecular and supramolecular evolution, incidence on the extractable and biomedical implications; Irradiation de polyurethannes par electrons acceleres: evolution moleculaire et supramoleculaire, incidence sur les extractibles et implications biomedicales

    Energy Technology Data Exchange (ETDEWEB)

    Guignot, C

    2002-11-15

    Face to the development of radiosterilization and polymers medical devices it was wished to study the behavior of polyurethanes under accelerated electrons in oxidizing atmosphere. This study has been made to reveal the physico chemical and organisational modifications of polyurethanes for a medical use. (N.C.)

  20. Mexico Geoid Heights (MEXICO97)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This 2' geoid height grid for Mexico, and North-Central America, is the MEXICO97 geoid model. The computation used about one million terrestrial and marine gravity...

  1. Test beam results on Atlas electromagnetic end-cap calorimeter: Electrons-jets separation; Resultats des tests en faisceau sur les bouchons du calorimetre electromagnetique d'ATLAS - separation electrons-jets

    Energy Technology Data Exchange (ETDEWEB)

    Serfon, C

    2005-05-15

    ATLAS is one of the four experiments being built on the future proton-proton collider at CERN: the LHC. This experiment has a large physics program, from Standard Model to new physics. The search for the Higgs boson in two photons or in four leptons, or the search of Z' or W' needs a good energy resolution for the electromagnetic calorimeter. This thesis describes the beam tests performed on three modules of the electromagnetic end cap calorimeter. A 0.6% non-uniformity, and a 0.7% energy resolution global constant term (dominant at high energy) has been obtained. Moreover, a study on the separation between electrons and jets is also performed. This study shows that a jets rejection factor of 10{sup 5} can be obtained keeping an electron efficiency better than 78%. (author)

  2. Mexico : tous les projets | Page 3 | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Sujet: ACCESS TO HEALTH CARE, RURAL COMMUNITIES, LATIN AMERICA, HEALTH SERVICES, DECENTRALIZATION, WOMEN'S HEALTH. Région: Mexico, North and Central America, South America. Programme: Santé des mères et des enfants. Financement total : CA$ 391,650.00. Hausse des taxes sur le tabac et ...

  3. Mexico : tous les projets | Page 6 | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Sujet: Globalization, MODERNIZATION, AGRICULTURAL MARKETS, FOOD CROPS, SMALLHOLDERS, AGRICULTURAL POLICY. Région: China, India, Indonesia, Mexico, Turkey, Zambia, Poland, South Africa. Programme: Emploi et croissance. Financement total : CA$ 677,200.00. Punto J : portail d'information sur la ...

  4. Theoretical Studies of Electron Injection and E-Layer Build-Up in Astron; Etudes Theoriques sur l'Injection d'Electrons et la Formation de la Couche E dans l'Astron; Teoreticheskie izucheniya ehlektronnoj inzhektsii i narashchivaniya sloya-E v ustanovke ''Astron''; Estudios Teoricos de Electrones y Formacion de la Capa E en la Instalacion Astron

    Energy Technology Data Exchange (ETDEWEB)

    Killeen, J.; Neil, V. K.; Heckrotte, W. [Lawrence Radiation Laboratory, Livermore, CA (United States)

    1966-04-15

    aux equations de Maxwell. Le systeme possede une symetrie axiale et on le suppose electriquement neutre. Les composantes du champ B{sub r} et B{sub z} peuvent etre derivees d'une fonction d'ecoulement {psi}(r, z, t). Le moment cinetique canonique est une constante du mouvement, ce qui permet de considerer une fonction de distribution des electrons du type f{sub e} (r, z, Pr, Pz). Les equations differentielles partielles pour f{sub e} et {psi} sont resolues numeriquement par des methodes de differences finies. L'espace des phases se compose de plus de 160 000 points, soit 81 dans z, 12 dans r, 19 dans P{sub z} et 9 dans P{sub r}. A chaque stade, une integration de fe sur l'espace des quantites de mouvement donne la densite du courant j{sub {theta}} (r, z, t); on calcule ensuite le champ propre en resolvant l'equation pour {psi} (r, z, t). Les auteurs presentent un certain nombre d'essais qui correspondent a plusieurs champs magnetiques dans le vide et a diverses conditions d'injection. Les distributions d'electrons obtenues different sensiblement selon le champ de miroir applique. Dans tous ces essais, il se forme des regions de B minimum, dont certaines ont ete poussees assez loin pour donner lieu a une inversion de champ. (author) [Spanish] Los haces de alta intensidad de electrones inyectados con velocidades relativistas en el dispositivo Astron,pueden ser atrapados en parte por la aceion de fuerzas propias electromagneticas coherentes. Proyectando adecuadamente los circuitos pasivos externos es posible impedir o inhibir la explosion electrostatica axial del haz inyectado en direccion azimutal. Las fuerzas propias originan una dispersion de particulas en el espacio de fases z-P{sub z}, y parte del haz es atrapado a expensas de la perdida del resto. Ademas de este efecto, para corrientes de haz suficientemente intensas el acoplamiento del haz.relativista con los circuitos pasivos puede provocar una perdida significativa de cantidad de movimiento axial debida a

  5. SurR9C84A protects and recovers human cardiomyocytes from hypoxia induced apoptosis

    Energy Technology Data Exchange (ETDEWEB)

    Ashok, Ajay [Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research (NLIMBR), School of Medicine (SoM), Faculty of Health, Centre for Molecular and Medical Research - C-MMR, Deakin University, Waurn Ponds, Victoria 3216 (Australia); Department of Pathology, Case Western Reserve University, 2103 Cornell Rd. WRB 5128, Cleveland, OH 44106-7288 (United States); Kanwar, Jagat Rakesh [Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research (NLIMBR), School of Medicine (SoM), Faculty of Health, Centre for Molecular and Medical Research - C-MMR, Deakin University, Waurn Ponds, Victoria 3216 (Australia); Krishnan, Uma Maheswari [Centre for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Chemical & Biotechnology (SCBT), SASTRA University, Thanjavur 613401 (India); Kanwar, Rupinder Kaur, E-mail: rupinder.kanwar@deakin.edu.au [Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research (NLIMBR), School of Medicine (SoM), Faculty of Health, Centre for Molecular and Medical Research - C-MMR, Deakin University, Waurn Ponds, Victoria 3216 (Australia)

    2017-01-01

    Survivin, as an anti-apoptotic protein and a cell cycle regulator, is recently gaining importance for its regenerative potential in salvaging injured hypoxic cells of vital organs such as heart. Different strategies are being employed to upregulate survivin expression in dying hypoxic cardiomyocytes. We investigated the cardioprotective potential of a cell permeable survivin mutant protein SurR9C84A, for the management of hypoxia mediated cardiomyocyte apoptosis, in a novel and clinically relevant model employing primary human cardiomyocytes (HCM). The aim of this research work was to study the efficacy and mechanism of SurR9C84A facilitated cardioprotection and regeneration in hypoxic HCM. To mimic hypoxic microenvironment in vitro, well characterized HCM were treated with 100 µm (48 h) cobalt chloride to induce hypoxia. Hypoxia induced (HI) HCM were further treated with SurR9C84A (1 µg/mL) in order to analyse its cardioprotective efficacy. Confocal microscopy showed rapid internalization of SurR9C84A and scanning electron microscopy revealed the reinstatement of cytoskeleton projections in HI HCM. SurR9C84A treatment increased cell viability, reduced cell death via, apoptosis (Annexin-V assay), and downregulated free cardiac troponin T and MMP-9 expression. SurR9C84A also upregulated the expression of proliferation markers (PCNA and Ki-67) and downregulated mitochondrial depolarization and ROS levels thereby, impeding cell death. Human Apoptosis Array further revealed that SurR9C84A downregulated expression of pro-apoptotic markers and augmented expression of HSPs and HTRA2/Omi. SurR9C84A treatment led to enhanced levels of survivin, VEGF, PI3K and pAkt. SurR9C84A proved non-toxic to normoxic HCM, as validated through unaltered cell proliferation and other marker levels. Its pre-treatment exhibited lesser susceptibility to hypoxia/damage. SurR9C84A holds a promising clinical potential for human cardiomyocyte survival and proliferation following hypoxic injury

  6. Gender-related family head schooling and Aedes aegypti larval breeding risk in Southern Mexico Escolaridad con relación al género de los jefes de familia y el riesgo de cría de Aedes aegypti en el sur de México

    Directory of Open Access Journals (Sweden)

    Rogelio Danis-Lozano

    2002-06-01

    Full Text Available Objective. To investigate if family head genre-associated education is related to the risk of domiciliary Aedes aegypti larval breeding in a dengue-endemic village of Southern Mexico. Material and Methods. A family head was considered to have a low education level if he/she had not completed elementary school. To estimate larval breeding risk within each household, a three-category Maya index was constructed using a weighted estimation of controllable and disposable domestic water containers. A socio-economic index was constructed based on household construction characteristics. Results. Low-level education of either family head was associated to higher larval breeding risk. Households with low-educated mothers had more larval breeding containers. These associations persisted after adjusting for household socio-economic level. Conclusions. These results indicate that households with female family heads with low education levels accumulate more containers that favor Ae. aegypti breeding, and that education campaigns for dengue control should be addressed to this part of the population.Objetivo. Investigar si la escolaridad asociada con el género de los jefes de familia de una localidad endémica de dengue en el sur de México estaba relacionada con el riesgo de cría intradomiciliaria de Aedes aegypti. Material y métodos. Se consideró que un jefe de familia tenía baja educación si él/ella no había completado la educación primaria. Para estimar el riesgo de cría larvaria en cada domicilio se construyó un Indice Maya de tres categorías a partir de la estimación ponderada de recipientes controlables y desechables. Se construyó un índice socioeconómico basado en los materiales de construcción de la casa. Resultados. Niveles bajos de educación de los jefes de familia se asociaron con niveles altos de riesgo de cría de larvas de mosquitos. Pero las casas con jefas de familia con baja educación tuvieron más recipientes en riesgo para

  7. Defeating Mexico’s Drug Trafficking Organizations: The Range of Military Operations in Mexico

    Science.gov (United States)

    2012-06-08

    Nuevo Leon, Chihuahua , Baja California, and Sinaloa (see figure 2) with 60 percent of all killings in 2008 reported in three cities: Tijuana, Baja...California; Culiacan, Sinaloa; and Ciudad Juarez, Chihuahua .2 Ciudad Juarez had the highest rate of DTO related deaths; this is significant for the U.S...Northern Mexico states are: Baja California, Baja California Sur, Sonora, Chihuahua , Coahuila, Nuevo Leon, Tamaulipas, and Sinaloa (see figure 2

  8. Use of small reactors as an alternative to supply electricity to Baja California Sur; Uso de reactores pequenos como alternativa de suministro de electricidad para Baja California Sur

    Energy Technology Data Exchange (ETDEWEB)

    Alonso, G.; Portes, E.; Ramirez, J. R. [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico); Ortega, G., E-mail: gustavo.alonso@inin.gob.mx [Comision Federal de Electricidad, Rio Rodano No. 14, 06500 Ciudad de Mexico (Mexico)

    2016-09-15

    The state of Baja California Sur (Mexico) does not form part of the national interconnected electrical system of the country, reason why is local its electrical power supply; one of the alternatives to cover future demands is the use of gas-based combined cycles, which presents the additional problem of including a high price for gas transportation in its costs. In order to reduce total costs, including investment, fuels and operation and maintenance in the operation of the Baja California Sur state electricity system in the coming years, mainly due to the estimated natural gas cost order of $11.50 dollars per million BTU, a proposal is presented to reduce the costs of the electrical system by replacing the necessary combined cycles with the new Small Modular Reactor type nuclear reactors, this alternative is economically competitive. (Author)

  9. La piraterie sur le web

    CERN Multimedia

    2002-01-01

    Les échanges de toutes sortes sont facilités à l'extrême par le web: des forums, des vidéoconférences, le commerce à distance, ou tout simplement la célérité des courriers électroniques ou la convivialité des chats, tout cela participe de la société de communication. Une certaine partie du monde découvre le nouvel horizon des échanges quasi instantanés, mais... les transactions sur le web sont-elles vraiment s res?

  10. Determination on Mice and other Organisms of the RBE of High-Energy Protons and Electrons; Efficacite Biologique Relative sur la Souris et d'Autres Organismes des Protons et des Electrons De Haute Energie; Opredelenie obeh pri obluchenii myshej i drugikh organizmov protonami i ehlektronami vysokikh ehnergij; Determinacion de la Eficacia Biologica Relativa de los Protones y de los Electrones de Elevada Emergia en el Raton y en Otros Organismos

    Energy Technology Data Exchange (ETDEWEB)

    Bonet-Maury, P.; Baarli, J.; Kahn, T.; Dardenne, G.; Frilley, M.; Deysine, A. [Institut du Radium, Paris (France)

    1964-03-15

    The general effects of 157- and 592-MeV protons and 150- and 950-MeV electrons were observed on mice exposed to lethal doses of whole-body irradiation. The irradiated animals displayed the same general symptoms as those produced by X - or gamma-rays. The biological tests did not bring to light any particular phenomenon which can be considered as characteristic of these high-energy particles. As determined in four tests (LD{sub 50}, average expectation of life and diminution of thymus and testicles), the RBE is close to 1. This corresponds to the mean LET of the particles and, in the case of the protons, does not appear to be increased by the higher local LET of the spallation fragments. (author) [French] Les effets generaux des protons de 157 et 592 MeV et des electrons de 150 et 950 MeV oiit ete observes sur des souris irradiees in toto, a des doses letales. Les animaux irradies presentent les memes symptomes generaux que ceux produits par les rayonnements de reference X ou {gamma}. Aucun phenomene caracteristique de ces particules de haute energie n'a pu etre mis en evidence avec les tests biologiques choisis. Lfefficacite biologique relative determinee sur 4 tests (DL{sub 50}, survie moyenne, reduction du thymus et des testicules) est peu differente de 1; cette EBR correspond au TEL moyen des particules et, pour les protons, ne parait pas augmentee par le TEL local plus eleve des etoiles de spallation. (author) [Spanish] Se han observado los efectos generales de los protones de 157 y 592 MeV y de los electrones de 150 y 950 MeV sobre ratones expuestos in toto, a dosis letales de radiaciones. Los animales irradiados presentan los mismos sintomas generales que los producidos por los rayos X o los rayos gamma adoptados como radiaciones de referencia. Los ensayos biologicos llevados a cabo no han puesto de manifiesto ningun fenomeno caracteristico de la accion de estas particulas de elevada energia. La eficacia biologica relativa determinada en cuatro ensayo (DL

  11. Characterization of particulate matter from the Metropolitan Zone of the Valley of Mexico by scanning electron microscopy and energy-dispersive x-ray analysis

    International Nuclear Information System (INIS)

    Martiez, T.; Lartigue, J.; Avila-Perez, P.; Carapio-Morales, L.; Zarazua, G.; Tejeda, S.

    2005-01-01

    The urban air pollution issue is a concern in many Mega cities, because of hazardous effect to human health. The Metropolitan Zone of the Valley of Mexico (MZMV) is one of the ten largest urban areas around the World with a population of 24.4 million people by the year 2000. One or the 'six criteria pollutants' regulated by Norm (because the hazardous effect to human health) are those commonly designed as Total Suspended Particles (TSP) and Respirable Particles (RP) lower than 10 μm (coarse, PM10 and fine PM2.5). Particulate matter consists of solids or liquid aerosol particles suspended in the air and has diverse chemical composition related to the sources. Under ambient conditions of sampling analysis particulate matter exists almost exclusively in solid phase but can include liquid aerosols such as the heavier components of diesel combustion products and nitric acid. In general particulate matter includes dust, dirt, soot, smoke and liquid droplets emitted in the air by sources such as factories, power plants, cars, fire, construction activities, aircrafts and winds blown dust. In this work the survey of TSP particles an PM10 was carried out with an automatic high volume sampler with an average flow rate of 1.5 m 3 min -1 during 24 h in five monitoring stations of the national network system chosen trying to cover the fourth cardinal directions and the central zone: Xalostoc (XAL) at NE; Tlanepantla (TLA) at NW; Merced (MER) at the downtown; Cerro de la Estrella (CES) at SE and Pedregal (PED) at SW. A sample of l cm 2 was cut from each filter and mounted with a graphite tape on an aluminum sample-holder. The analysis of 100 induvidual particles of each sample were done by scanning electron microscopy and energy-dispersive X-ray microanalysis (EDX). The analysis was performed using a scanning electron microscope PHILLIPS Model XL-30. X-ray analysis is carried out with an energy-dispersive Si(Li) detector Model Saphire, SUTW (super ultra thin window), allowing

  12. Electronic device for measuring the polarization parameter in the {pi}{sup -}p {yields} {pi}{sup 0}n charge exchange reaction on a polarized proton target; Un appareillage electronique destine a la mesure du parametre de polarisation dans la reaction d'echange de charge {pi}{sup -}p {yields} {pi}{sup 0}n sur cible de protons polarises

    Energy Technology Data Exchange (ETDEWEB)

    Brehin, S [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1967-12-15

    An electronic apparatus has been constructed to measure the polarization parameter P{sub 0}(t) in {pi}{sup -}p {yields} {pi}{sup 0}n charge exchange scattering at 5.9 GeV/c and 11,2 GeV/c on polarized proton target. This device insures triggering of a heavy plate spark chamber, allowing visualisation of {gamma} rays from the {pi}{sup 0} decays when the associated neutron offers suitable characteristics in direction and energy. The neutron is detected by an array of 32 counters and his energy is measured by a time of flight method. Electronic circuits of this apparatus are described as test and calibration methods used. (author) [French] Un appareillage electronique a ete realise pour mesurer le parametre de polarisation P{sub 0}(t) dans la reaction d'echange de charge {pi}{sup -}p {yields} {pi}{sup 0}n a 5,9 GeV/c et 11,2 GeV/c sur une cible de protons polarises. Ce dispositif assure le declenchement d'une chambre a etincelles a plaques lourdes, permettant de visualiser les {gamma} de desitegration du {pi}{sup 0}, lorsque le neutron associe presente les caracteristiques convenables en direction et en energie. Le neutron est detecte par un ensemble de 32 compteurs et son energie est mesuree par une methode de temps de vol. Les circuits composant cet appareillage sont decrits ainsi que les methodes d'etalonnage et de verification utilisees. (auteur)

  13. Use of small reactors as an alternative to supply electricity to Baja California Sur

    International Nuclear Information System (INIS)

    Alonso, G.; Portes, E.; Ramirez, J. R.; Ortega, G.

    2016-09-01

    The state of Baja California Sur (Mexico) does not form part of the national interconnected electrical system of the country, reason why is local its electrical power supply; one of the alternatives to cover future demands is the use of gas-based combined cycles, which presents the additional problem of including a high price for gas transportation in its costs. In order to reduce total costs, including investment, fuels and operation and maintenance in the operation of the Baja California Sur state electricity system in the coming years, mainly due to the estimated natural gas cost order of $11.50 dollars per million BTU, a proposal is presented to reduce the costs of the electrical system by replacing the necessary combined cycles with the new Small Modular Reactor type nuclear reactors, this alternative is economically competitive. (Author)

  14. Sur des erres de jazz

    OpenAIRE

    Daverat, Xavier

    2007-01-01

    Une opinion commune considère que le jazz vivrait une période de dépérissement ou de ressassement. Cette conception est d’abord basée sur une erreur qui consiste à croire que le jazz évolue uniquement au travers de relèves entre les générations, de substitutions complètes de nouveaux styles à des formes d’expression qui se démoderaient aussitôt, d’instaurations systématiques de nouveaux langages opposés à ceux qui les ont précédés. Au contraire, les caractéristiques de chaque style s’imbrique...

  15. Electronics

    Science.gov (United States)

    2001-01-01

    International Acer Incorporated, Hsin Chu, Taiwan Aerospace Industrial Development Corporation, Taichung, Taiwan American Institute of Taiwan, Taipei, Taiwan...Singapore and Malaysia .5 - 4 - The largest market for semiconductor products is the high technology consumer electronics industry that consumes up...Singapore, and Malaysia . A new semiconductor facility costs around $3 billion to build and takes about two years to become operational

  16. Experiments with the SUR 100 training reactor

    International Nuclear Information System (INIS)

    Milicic, B.

    1984-06-01

    This paper contains a compilation of various experiments using the SUR - 100 reactor for training purposes, which have been widly proved in practical work at the School for Nuclear Technology of the Karlsruhe Research Center. (orig.) [de

  17. Study of electronic field emission from large surfaces under static operating conditions and hyper-frequency; Etude de l'emision electronique par effet de champ sur des surfaces larges en regime statique et hyperfrequence

    Energy Technology Data Exchange (ETDEWEB)

    Luong, M

    1997-09-01

    The enhanced electronic field emission from large area metallic surfaces lowers performances of industrial devices that have to sustain high electric field under vacuum. Despite of numerous investigations in the past, the mechanisms of such an emission have never been well clarified. Recently, research in our laboratory has pointed out the importance played by conducting sites (particles and protrusions). A refined geometrical model, called superposed protrusions model has been proposed to explain the enhanced emission by local field enhancement. As a logical continuation, the present work aims at testing this model and, in the same time, investigating the means to suppress the emission where it is undesirable. Thus, we have showed: the cause of current fluctuations in a continuous field regime (DC), the identity of emission characteristics ({beta}, A{sub e}) in both radiofrequency (RF) and DC regimes, the effectiveness of a thermal treatment by extern high density electronic bombardment, the effectiveness of a mechanical treatment by high pressure rinsing with ultra pure water, the mechanisms and limits of an in situ RF processing. Furthermore, the electronic emission from insulating particles has also been studied concurrently with a spectral analysis of the associated luminous emission. Finally, the refined geometrical model for conducting sites is reinforced while another model is proposed for some insulating sites. Several emission suppressing treatments has been explored and validated. At last, the characteristic of a RF pulsed field emitted electron beam has been checked for the first time as a possible application of such a field emission. (author)

  18. Study of electronic field emission from large surfaces under static operating conditions and hyper-frequency; Etude de l'emision electronique par effet de champ sur des surfaces larges en regime statique et hyperfrequence

    Energy Technology Data Exchange (ETDEWEB)

    Luong, M

    1997-09-01

    The enhanced electronic field emission from large area metallic surfaces lowers performances of industrial devices that have to sustain high electric field under vacuum. Despite of numerous investigations in the past, the mechanisms of such an emission have never been well clarified. Recently, research in our laboratory has pointed out the importance played by conducting sites (particles and protrusions). A refined geometrical model, called superposed protrusions model has been proposed to explain the enhanced emission by local field enhancement. As a logical continuation, the present work aims at testing this model and, in the same time, investigating the means to suppress the emission where it is undesirable. Thus, we have showed: the cause of current fluctuations in a continuous field regime (DC), the identity of emission characteristics ({beta}, A{sub e}) in both radiofrequency (RF) and DC regimes, the effectiveness of a thermal treatment by extern high density electronic bombardment, the effectiveness of a mechanical treatment by high pressure rinsing with ultra pure water, the mechanisms and limits of an in situ RF processing. Furthermore, the electronic emission from insulating particles has also been studied concurrently with a spectral analysis of the associated luminous emission. Finally, the refined geometrical model for conducting sites is reinforced while another model is proposed for some insulating sites. Several emission suppressing treatments has been explored and validated. At last, the characteristic of a RF pulsed field emitted electron beam has been checked for the first time as a possible application of such a field emission. (author)

  19. Compositions de revêtement réticulables par bombardement électronique. Deuxième partie : Analyse de la littérature des brevets sur la formulation des liants radiodurcissables Forming Crosslinkable Coating by Electron Bombardement. Part Two : Analysis of Patent Literature on Formulating

    Directory of Open Access Journals (Sweden)

    Miléo J. -C.

    2006-11-01

    Full Text Available Le procédé de séchage des peintures et vernis par irradiation électronique est analysé sous son aspect chimique. On passe en revue les différents modes de synthèse permettant d'obtenir les résines radiodurcissables qui font l'objet, sur le plan des brevets, d'une abondante littérature. Ces résines sont classées suivant la nature des insaturations réactives qu'elles contiennent - insaturations de type « ester maléique », - esters et amides (méthacryliques simples; - esters (méthacryliques à enchaînements uréthanes ; - esters (méthacryliques (p-hydroxylés, leurs esters (insaturés et autres dérivés, - siloxanes; - maléimides; - insaturations « allyliques » ; - résines saturées. The process of drying points and varnishes by electron irradiation is analyzed from the chemical standpoint. A review is mode of the different synthesis methods of pro ducing radiation-curable resins that have resulted in abundant patent literature. These resins are classified according ta the nature of the reactive unsaturations they contain - unsaturations of the « maleic ester » type; - simple (methacrylic esters and amides ; - 3-hydroxyl (methacrylic esters, their (unsaturated esters and other derivatives ; - siloxanes ; - maleimides ; - « allylic » unsaturations ; - saturated resins

  20. September 1985 Mexico City, Mexico Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The magnitude 8.1 earthquake occurred off the Pacific coast of Mexico. The damage was concentrated in a 25 square km area of Mexico City, 350 km from the epicenter....

  1. Experiences in the use of an electronic tool to measure pressure, temperature and spinner logs in the Mexican geothermal fields; Experiencias en el uso de sondas electronicas de presion, temperatura y flujo en campos geotermicos de Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Flores Armenta, Magaly; Jaimes Maldonado, Guillermo [Gerencia de Proyectos Geotermoelectricos, Comision Federal de Electricidad, Morelia, Michoacan (Mexico)

    1999-08-01

    In this article are exposed the results of an electronic tool to measure pressure-temperature and spinner profiles in the geothermal wells of Mexico, utilized in order to identify unobservable phenomena with traditional Kuster type pressure and temperature logs. Some examples of the applications are the identifications of production zones, interaction from between two or more zones of contribution under several conditions of operation, casing damages and apparition of sink flow intervals into the formation in producer wells. It is also presented the quantitative method utilized to calculate the masic contribution of the intervals of interest. [Spanish] En este articulo se exponen los resultados obtenidos mediante el uso de una sonda electronica para la medicion de presion-temperatura y flujo en los pozos geotermicos de Mexico, utilizada para identificar fenomenos que no son observables con las mediciones tradicionales tipo Kuster de presion y temperatura. Se ejemplifican algunas de las aplicaciones hechas, tales como la identificacion de zonas de produccion, forma de interaccion entre dos o mas zonas de aporte bajo diferentes condiciones de operacion, roturas en tuberias y aparicion de zonas ladronas en pozos. Se presenta brevemente el metodo cuantitativo utilizado para calcular el aporte masico de las intervalos de interes.

  2. Electron emission following collisions between multi-charged ions and D{sub 2} molecules; Etude de l'emission electronique induite par impact d'ion multicharge sur la molecule D{sub 2}

    Energy Technology Data Exchange (ETDEWEB)

    Laurent, G

    2004-05-15

    Dissociative ionisation mechanisms induced in collisions involving a highly charged ion (S{sup 15+}, 13.6 MeV/u) and a molecular deuterium target, have been studied through momentum vector correlations of both the D{sup +} fragments and the electrons produced. An experimental apparatus has been developed in order to detect in coincidence all the charged particles produced during the collision. The measurement of their momentum vectors, which allows one to determine both their kinetic energy and direction of emission with respect to the projectile one, combines Time of Flight, Position Sensitive Detection, and multi-coincidence techniques. The correlation of the fragment and electron kinetic energies enables not only to determine branching ratios between the dissociative ionisation pathways, but also to separate unambiguously kinetic energy distributions of fragments associated to each process. Finally, the angular distributions of ejected electrons, as a function of the orientation of the molecular axis with respect to the projectile direction, are deduced from the spatial correlation. Measurements are compared to theoretical angular distributions obtained using the CDW-EIS (Continuum Distorted Wave-Eikonal Initial State) method. (author)

  3. Electronic device for measuring the polarization parameter in the {pi}{sup -}p {yields} {pi}{sup 0}n charge exchange reaction on a polarized proton target; Un appareillage electronique destine a la mesure du parametre de polarisation dans la reaction d'echange de charge {pi}{sup -}p {yields} {pi}{sup 0}n sur cible de protons polarises

    Energy Technology Data Exchange (ETDEWEB)

    Brehin, S. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1967-12-15

    An electronic apparatus has been constructed to measure the polarization parameter P{sub 0}(t) in {pi}{sup -}p {yields} {pi}{sup 0}n charge exchange scattering at 5.9 GeV/c and 11,2 GeV/c on polarized proton target. This device insures triggering of a heavy plate spark chamber, allowing visualisation of {gamma} rays from the {pi}{sup 0} decays when the associated neutron offers suitable characteristics in direction and energy. The neutron is detected by an array of 32 counters and his energy is measured by a time of flight method. Electronic circuits of this apparatus are described as test and calibration methods used. (author) [French] Un appareillage electronique a ete realise pour mesurer le parametre de polarisation P{sub 0}(t) dans la reaction d'echange de charge {pi}{sup -}p {yields} {pi}{sup 0}n a 5,9 GeV/c et 11,2 GeV/c sur une cible de protons polarises. Ce dispositif assure le declenchement d'une chambre a etincelles a plaques lourdes, permettant de visualiser les {gamma} de desitegration du {pi}{sup 0}, lorsque le neutron associe presente les caracteristiques convenables en direction et en energie. Le neutron est detecte par un ensemble de 32 compteurs et son energie est mesuree par une methode de temps de vol. Les circuits composant cet appareillage sont decrits ainsi que les methodes d'etalonnage et de verification utilisees. (auteur)

  4. 5th International Workshop on Desorption Induced by Electronic Transitions

    CERN Document Server

    Jennison, Dwight R; Stechel, Ellen B; DIET V; Desorption induced by electronic transitions

    1993-01-01

    This volume in the Springer Series on Surface Sciences presents a recent account of advances in the ever-broadening field of electron-and photon-stimulated sur­ face processes. As in previous volumes, these advances are presented as the proceedings of the International Workshop on Desorption Induced by Electronic Transitions; the fifth workshop (DIET V) was held in Taos, New Mexico, April 1-4, 1992. It will be abundantly clear to the reader that "DIET" is not restricted to desorption, but has for several years included photochemistry, non-thermal surface modification, exciton self-trapping, and many other phenomena that are induced by electron or photon bombardment. However, most stimulated surface processes do share a common physics: initial electronic excitation, localization of the excitation, and conversion of electronic energy into nuclear kinetic energy. It is the rich variation of this theme which makes the field so interesting and fruitful. We have divided the book into eleven parts in orde...

  5. Pockmarks off Big Sur, California

    Science.gov (United States)

    Paull, C.; Ussler, W.; Maher, N.; Greene, H. Gary; Rehder, G.; Lorenson, T.; Lee, H.

    2002-01-01

    A pockmark field was discovered during EM-300 multi-beam bathymetric surveys on the lower continental slope off the Big Sur coast of California. The field contains ??? 1500 pockmarks which are between 130 and 260 m in diameter, and typically are 8-12 m deep located within a 560 km2 area. To investigate the origin of these features, piston cores were collected from both the interior and the flanks of the pockmarks, and remotely operated vehicle observation (ROV) video and sampling transects were conducted which passed through 19 of the pockmarks. The water column within and above the pockmarks was sampled for methane concentration. Piston cores and ROV collected push cores show that the pockmark field is composed of monotonous fine silts and clays and the cores within the pockmarks are indistinguishable from those outside the pockmarks. No evidence for either sediment winnowing or diagenetic alteration suggestive of fluid venting was obtained. 14C measurements of the organic carbon in the sediments indicate continuous sedimentation throughout the time resolution of the radiocarbon technique ( ??? 45000 yr BP), with a sedimentation rate of ??? 10 cm per 1000 yr both within and between the pockmarks. Concentrations of methane, dissolved inorganic carbon, sulfate, chloride, and ammonium in pore water extracted from within the cores are generally similar in composition to seawater and show little change with depth, suggesting low biogeochemical activity. These pore water chemical gradients indicate that neither significant accumulations of gas are likely to exist in the shallow subsurface ( ??? 100 m) nor is active fluid advection occurring within the sampled sediments. Taken together the data indicate that these pockmarks are more than 45000 yr old, are presently inactive, and contain no indications of earlier fluid or gas venting events. ?? 2002 Elsevier Science B.V. All rights reserved.

  6. Mexico; Mexique

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-06-01

    This document summarizes the key energy data for Mexico: 1 - energy organizations and policy: Ministry of energy (SENER), Comision Reguladora de Energia (CRE), Ministry of Finances, Ministry of trade and industrial development (SECOFI), national commission for energy savings (CONAE); 2 - companies: federal commission of electricity (CFE), Minera Carbonifera Rio Escondido (MICARE - coal), Pemex (petroleum); 3 - energy production: resources, electric power, petroleum, natural gas; 4 - energy consumption; 5 - stakes and perspectives. Some economic and energy indicators are summarized in a series of tables: general indicators, supply indicators (reserves, refining and electric capacity, energy production, foreign trade), demand indicators (consumption trends, end use, energy independence, energy efficiency, CO{sub 2} emissions), energy status per year and per energy source. (J.S.)

  7. Estilos estructurales del Subandino Sur de Bolivia

    OpenAIRE

    Rocha, Emilio

    2013-01-01

    El Subandino Sur de Bolivia es una típica faja plegada y corrida de lámina delgada, con una notable regularidad en la geometría de las estructuras. Esta es una característica típica de las fajas plegadas en las que no se involucra el basamento en la deformación. Sin embargo, cuando se analiza en detalle la geometría y evolución de la deformación del Subandino Sur, se verifica que existen numerosas desviaciones de dicha regularidad. En el presente trabajo se estudiaron los diferentes procesos ...

  8. Study of the effect of neutron and electron irradiations on the low temperature thermal conductivity of germanium and silicon; Etude de l'effet des irradiations neutronique et electronique sur la conductibilite thermique aux basses temperatures du germanium et du silicium

    Energy Technology Data Exchange (ETDEWEB)

    Vandevyver, M [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1967-06-15

    The main results obtained from this work are the following: 1 Neutron irradiation (at 300 deg. K) produces lattice defects in germanium and silicon, and a corresponding very large lowering of the thermal conductivity is observed in the low temperature region (4-300 ). The results obtained have been explained with the help of the following hypotheses: for silicon a scattering of phonons by the stress fields produced by the defects; for germanium, a supplementary scattering of the electron phonon type. 2 Annealing treatments carried out on these materials above 373 deg. K restored the thermal conductivity over the whole temperature range of the measurements (4-300 deg. K); in the case of both germanium and silicon there were two steps in the annealing process. 3 A study of the thermal conductivity of germanium (initially P or N) after an electronic irradiation showed that the scattering of phonons could depend on the state of charge of the defects thus produced. (author) [French] Les principaux resultats obtenus au cours de ce travail sont les suivants : 1 Les irradiations neutroniques (a 300 deg. K) introduisent des defauts de reseau dans le germanium et le silicium et l'on observe correlativement pour ces materiaux, une tres importante diminution de conductibilite thermique dans le domaine des basses temperatures (4-300 deg. K). Les resultats obtenus ont pu etre interpretes en admettant principalement: pour le silicium, une diffusion des phonons par les champs de contrainte dus aux defauts; pour le germanium, une diffusion additionnelle du type electron-phonon. 2 Des recuits effectues sur ces materiaux au-dessus de 373 deg. K ont montre une restauration de la conductibilite thermique dans tout l'intervalle de temperature de mesure (4-300 deg. K) et comportant pour le germanium et le silicium, deux etapes de recuit 3 L'etude de la conductibilite thermique de germanium (initialement N ou P) apres une irradiation electronique, a montre que la diffusion des phonons

  9. Effect of the coupling between electronic structure and crystalline structure on some properties of transition metals; Couplage entre structure electronique et structure cristalline: effet sur quelques proprietes des metaux de transition

    Energy Technology Data Exchange (ETDEWEB)

    Nastar, M

    1994-10-14

    The elastic constants, energetic stabilities and vacancy formation energies in transition metals are calculated within a Tight Binding model. In order to outline the effect of the electronic structure, these properties are represented as functions of band filling. The variation of the shear elastic constants of hexagonal close packed (HCP), body centered cubic (BCC) and face centered cubic (FCC) structures, is in contrast with the roughly parabolic behavior of bulk modulus. The general trends are in very good agreement with available experimental and `ab initio` data. The vacancy formation energy in the BCC structure shows strong deviations from bell shape behavior with a maximum corresponding approximately to the band filling of group 6. This band filling effect contributes to the noticeable decrease of the self diffusion rate between group 4 and group 6. We demonstrate that the abrupt increase of the C` elastic constant, the NT{sub 1} (0.-1.1) phonon frequency, the energy differences between BCC and HCP and between FCC and HCP as well as the vacancy formation energy, that occurs when going from Zr to Mo, is related to the presence of a pseudo-gap in the density of states of the BCC structure. Using the recursion method, we show that the general trends of these properties are correctly reproduced when considering only a few moments of the density of states (about 6). On the other hand, details such as the elastic constant singularities, are displayed only with an exact calculation of the density of states. (Author). 173 refs., 84 figs., 5 tabs.

  10. Environmental history of the dry forest biome of Guerrero, Mexico, and human impact during the last c. 2700 years

    NARCIS (Netherlands)

    Berrio, J.C.; Hooghiemstra, H.; van Geel, B.; Ludlow-Wiegers, B.

    2006-01-01

    Two lake sediment cores from Madre del Sur mountain range, Guerrero State, west-central Mexico were studied to examine the past dynamics of the dry forest biome. Pollen, spores of coprophilous fungi, cyanobacteria and lithological changes are presented. The 390-cm Tixtla core (17°30′N, 99°24′W, 1400

  11. Analyse de l'effet de la suréducation sur l'efficacité technique des ...

    African Journals Online (AJOL)

    de tire-au-flanc, et l'état de santé (Vroom 1964 ; Sheppard & Herrick 1972 ; ... impact négatif significatif de la suréducation sur la satisfaction au travail ; son ..... présence syndicale sur la performance financière de 250 entreprises américaines.

  12. Étude sur l'entrepreneuriat dalit : Regard sur 25 % de la population ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Étude sur l'entrepreneuriat dalit : Regard sur 25 % de la population indienne. Cette étude, pilotée par Udit Raj, député du parlement indien, aide à mieux comprendre les contraintes que rencontrent les entrepreneurs dalits. Elle permettra de sonder 12 000 entrepreneurs dalits dans 14 états et de recueillir des données ...

  13. Étude du Partenariat de recherche sur l'influenza aviaire en Asie sur ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Étude du Partenariat de recherche sur l'influenza aviaire en Asie sur l'efficacité des mesures de lutte. L'influenza aviaire hautement pathogène (H5N1) est une grave maladie qui touche la volaille et contamine les êtres humains dans une faible proportion. L'Organisation mondiale de la santé croit que le virus pourrait subir ...

  14. The Lost Path: Regulating Transit Illegal Immigration on Mexico’s Southern Border

    Science.gov (United States)

    2014-12-01

    Latinoamericana de Ciencias Sociales, August 2013), 160. 7 George W. Grayson, “Mexico’s Forgotten Southern Border: Does Mexico Practice at Home What...Migraciones en el Sur de México y Centroamérica (Universidad de Ciencias y Artes de Chiapas, 2008), 239. 243 Cervera, “ La Otra Frontera,” 144. 244...Tensiones entre los Derechos Humanos, Ley y Justicia,” in Migraciones en el Sur de México y Centroamérica (Universidad de Ciencias y Artes de Chiapas

  15. N.3274 law project allowing the approbation of the agreement between the France and the United States of Mexico on the self development mechanism in the framework of the Kyoto protocol; N.3274 projet de loi autorisant l'approbation de l'accord entre la France et les Etats-Unis du Mexique sur le mecanisme de developpement propre dans le cadre du protocole de Kyoto

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-08-15

    The objectives of this agreement is to facilitate the elaboration and the implementing of greenhouse gases emissions reduction projects at Mexico associated to french institutions and allowing the contribution to the sustainable development in Mexico. The twelve articles of the agreement are presented. (A.L.B.)

  16. New Mexico Parks

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This dataset provides an initial version of the locations of parks in New Mexico, in point form, with limited attributes, compiled using available data from a...

  17. New Mexico State Parks

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This dataset provides an initial version of the generalized physical boundaries of New Mexico State Parks, in polygonal form with limited attributes, compiled using...

  18. New Mexico Ghost Towns

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This data provides locations and non-spatial attributes of many ghost towns in the State of New Mexico, compiled from various sources. Locations provided with...

  19. English Teaching in Mexico.

    Science.gov (United States)

    Salazar, Denise

    2002-01-01

    Discusses teaching English in Mexico, a country with important social, cultural, and economic ties to the United States. Looks at the various English teaching situations as well as teacher education for teachers in Mexico. Concludes that the English teaching situation in Mexico reflects great diversity and growth, and that the knowledge of English…

  20. Psychology in Mexico

    Science.gov (United States)

    Ruiz, Eleonora Rubio

    2011-01-01

    The first formal psychology course taught in Mexico was in 1896 at Mexico's National University; today, National Autonomous University of Mexico (UNAM in Spanish). The modern psychology from Europe and the US in the late 19th century were the primary influences of Mexican psychology, as well as psychoanalysis and both clinical and experimental…

  1. A scanning electron microscopy study of early development in vitro of Contracaecum multipapillatum s.l. (Nematoda: Anisakidae) from a brown pelican (Pelecanus occidentalis) from the Gulf of California, Mexico.

    Science.gov (United States)

    Molina-Fernández, Dolores; Valles-Vega, Isabel; Hernández-Trujillo, Sergio; Adroher, Francisco Javier; Benítez, Rocío

    2017-10-01

    Eggs obtained from the uteri of female nematodes, genetically identified as Contracaecum multipapillatum s.l., found in a brown pelican (Pelecanus occidentalis) from Bahía de La Paz, Gulf of California, Mexico, were used to study the early developmental stages of this anisakid by scanning electron microscopy (SEM). Egg dimensions were approximately 54 × 45 μm measured by SEM. Observation of the eggs revealed an outer surface of fibrous appearance. The newly hatched larvae were ensheathed and highly motile. Observation with SEM showed that the sheaths of the larvae were striated and revealed an excretory pore and a cleft near the anterior end of the sheath, presumably to facilitate the opening of the sheath for the emergence of the larva. The hatched larvae were placed in nutritive culture medium, where they grew within their sheath, some exsheathing completely 2 weeks later. The surface patterns of the sheath and the cuticle of the exsheathed larvae were clearly different. Although they did not moult during culture, SEM revealed a morphology typical of third-stage larvae of Contracaecum from fish, as previously observed by optical microscopy. Thus, we suggest that newly hatched larvae from eggs of C. multipapillatum are third larval stage but with sheath of the second larval stage, as occuring in other anisakids.

  2. Enquêtes sur les soucoupes volantes

    OpenAIRE

    Lagrange, Pierre

    2007-01-01

    La dispute autour du mot « preuve » se réduit à une question : Qu'est-ce qui constitue une preuve ? Faut-il qu'un ovni atterrisse à l'entrée du Pentagone, près des bureaux des chefs d'État-Major ? Ou bien est-ce une preuve quand une station de radar au sol détecte un ovni, envoie un jet l'intercepter, que le pilote du jet le voit et le suit sur son radar pour finir par le voir disparaître à une vitesse phénoménale ? Ou est-ce une preuve quand un pilote tire sur un ovni et maintient son histoi...

  3. Controverses sur les sucres [Controversies about sugars

    Directory of Open Access Journals (Sweden)

    Malika BOUCHENAK

    2016-12-01

    Full Text Available La surconsommation de sucres ajoutés et leurs effets putatifs sur diverses pathologies cardiométaboliques continuent de susciter des controverses. Dans les années 1950, le taux élevé de maladies cardiovasculaires (MCV, chez les hommes Américains a conduit à des études sur le rôle des facteurs alimentaires, tels que le cholestérol, les phytostérols, l'excès de calories, les acides aminés, les graisses, les glucides, les vitamines et les minéraux, à influencer le risque de MCV. Dans les années 60, deux éminents physiologistes, plaidant pour des hypothèses causales divergentes de MCV, John Yudkin a identifié les sucres ajoutés comme agent primaire, tandis que Ancel Keys identifiait les graisses totales, les graisses saturées et le cholestérol alimentaire. Cependant, dans les années 80, peu de scientifiques croyaient que les sucres ajoutés jouaient un rôle important dans la maladie coronarienne, et les premiers conseils nutritionnels de 1980 (1980 Dietary Guidelines for americans étaient axés sur la réduction des graisses totales, des graisses saturées et du cholestérol alimentaire pour la prévention des MCV.

  4. N.3663 report realized for the Foreign Affairs Commission on the law project n. 3274, authorizing the approbation of the agreement between France and United States of Mexico on the mechanism of clean development in the framework of the Kyoto protocol; N. 3663 rapport fait au nom de la Commission des Affaires Etrangeres sur le projet de loi n. 3274, autorisant l'approbation de l'accord entre la France et les Etats-Unis du Mexique sur le mecanisme de developpement propre dans le cadre du protocole de Kyoto

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-02-15

    The clean development mechanism is one of the Kyoto protocol flexible mechanisms. It is intended to allow industrialized countries to offset their greenhouse gas reduction targets by funding projects in developing countries that lead to reduced emissions. In this framework, this law project aims to favor the cooperation between France and Mexico. The first part presents the advantages of the Kyoto protocol ane second part is devoted to the bilateral cooperation. (A.L.B.)

  5. Unión del magreb, un caso de regionalismo Sur-Sur

    Directory of Open Access Journals (Sweden)

    SofianE Bouhdiba

    2009-01-01

    Full Text Available Se exploran brevemente las fuerzas y limitaciones de la Unión del Magreb (UMA como una experiencia de regionalismo Sur-Sur, en el marco de mayor extensión. Se plantea la necesidad de que la UMA redireccione sus intereses, estrategias y alianzas hacia el sur, puesto que se ha vuelto un instrumento de intercambios comerciales con la Unión Europea y un eje estratégico de lucha contra el terrorismo para Estados Unidos. Además se invita a la misma UMA a que considere los alcances de instituciones de integración en América Latina y Asia a fin de fortalecerse como bloque.

  6. El (los Sur buscando al Sur. Una construcción entre estereotipos y realidad.

    Directory of Open Access Journals (Sweden)

    Mabel Franzone

    2010-11-01

    Full Text Available Todas las lecturas que podamos hacer del Sur, de sus propias representaciones, de aquellas vehiculizadas por el Norte, de sus creaciones, de sus reacciones, de su búsqueda constante de identidad, son lecturas de múltiples situaciones, que llaman a cruces insoslayables entre pueblos, entre distintas etnias, entre disciplinas, entre sentimientos que van desde el rechazo hasta la atracción casi magnética entre los dos hemisferios. Nuestra intención primera era la de reunir de manera aproximativa las problemáticas actuales de los Sur, ligadas a lo imaginario.

  7. Sur la plurifonctionnalité du discours direct

    OpenAIRE

    Cigada Sara

    2012-01-01

    La comparaison entre les résultats de nombreux travaux sur le dialogue dans le texte littéraire, sur l’attestation linguistique de la subjectivité, sur la fonction argumentative des émotions dans le discours et sur les effets de polyphonie, suggère que la structure sémiotique et linguistique du discours direct (DD) se trouve au croisement stratégique de plusieurs axes de la construction discursive. Nous étudions donc l’insertion du DD dans le discours (cf. Rosier 2008: Le discours rapporté en...

  8. Influence de l'irrigation sur le rendement et sur la qualité des raisins

    Directory of Open Access Journals (Sweden)

    J. Cerny

    1968-12-01

     Le travail présenté résume les résultats de l'expérience avec l'irrigation supplémentaire de la vigne dans le domaine sec du Sud de la Moravie ainsi que son influence sur le rendement et la qualité des raisins.

  9. Rural telemedicine project in northern New Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Zink, S.; Hahn, H.; Rudnick, J.; Snell, J.; Forslund, D. [Los Alamos National Lab., NM (United States); Martinez, P. [Northern New Mexico Community Coll., Espanola, NM (United States)

    1998-12-31

    A virtual electronic medical record system is being deployed over the Internet with security in northern New Mexico using TeleMed, a multimedia medical records management system that uses CORBA-based client-server technology and distributed database architecture. The goal of the NNM Rural Telemedicine Project is to implement TeleMed into fifteen rural clinics and two hospitals within a 25,000 square mile area of northern New Mexico. Evaluation of the project consists of three components: job task analysis, audit of immunized children, and time motion studies. Preliminary results of the evaluation components are presented.

  10. Comunidades de quitones (Mollusca: Polyplacophora de la Bahía de La Paz, Baja California Sur, México

    Directory of Open Access Journals (Sweden)

    Cedar I García Ríos

    2007-03-01

    Full Text Available A las ocho especies de poliplacóforos registradas en Bahía de la Paz, Baja California Sur, México, o cerca de ella, agregamos a Lepidochitona beanii, Chaetopleura lurida, Stenoplax limaciformis, S. mariposa, Lepidozona clathrata, L. serrata y Acanthochitona arragonites. El análisis de las comunidades estudiadas usando técnicas de ordenación sugiere que podría relacionarse la exposición al oleaje con la riqueza y la diversidad de especies. La comunidad recolectada en condiciones intermedias de exposición al oleaje presentó mayor número de especies y mayor diversidad de acuerdo con el índice de Shannon.Polyplacophoran communities (Mollusca: Polyplacophora at Bahía de La Paz, Baja California Sur, México. Eight species of polyplacophorans have been reported from La Bahía de la Paz, Baja California Sur, Mexico. We add Lepidochitona beanii, Chaetopleura lurida, Stenoplax limaciformis, S. mariposa, Lepidozona clathrata, L. serrata and Acanthochitona arragonites, increasing the known number of species to 15. Ordination analysis of five chiton communities at the site suggests a correlation of wave exposure to species composition and diversity: communities with intermediate wave exposure have more species (richness and higher diversity (Shannon’s index. Rev. Biol. Trop. 55 (1: 177-182. Epub 2007 March. 31.

  11. Turistas hispanohablantes en Corea del Sur

    OpenAIRE

    Arroyo Herrera, Javier

    2016-01-01

    Dada la evolución económica que ha experimentado en los últimos años y el aumento de las llegadas de turistas internacionales debido a fenómenos como el Hallyu, Corea del Sur se está convirtiendo en un foco de atención turística que requiere de estudios para conocer mejor su turismo y la importancia que la cultura popular supone para éste. La presente investigación recopila los elementos más destacables del turismo surcoreano y demuestra la influencia que la „ola coreana‟ provoca en sus segui...

  12. Regard sur les Lazarets en Terre Canadienne

    Directory of Open Access Journals (Sweden)

    Jean Milot

    2008-01-01

    Full Text Available Puisant dans les nombreuses références qu’offrent les publications médicales canadiennes du milieu du XIXe siècle à nos jours, l’auteur fait découvrir l’existence de lazarets en terre canadienne, décrit l’impact de la maladie sur les conditions vie des lépreux qui y étaient confinés et en souligne les contrecoups tant sur le plan physique et psychologique que social. Il présente un bref aperçu de la maladie, ses symptômes, ses signes ainsi que ses complications oculaires et rappelle les premiers moyens thérapeutiques à base d’huile de chaulmoogra introduits dans la colonie de Tracadie vers 1901. Il illustre son propos en évoquant la vie dans les lazarets de l’île de Sheldrake (1844–1848 et de Tracadie (1848–1965 au Nouveau-Brunswick, puis dans ceux des îles D’Arcy (1891–1924 et de Bentinck (1924–1957 en Colombie-Britannique.

  13. [Aging in Mexico].

    Science.gov (United States)

    Contreras de Lehr, E

    1986-01-01

    Demographic social and economic aspects of the situation of the elderly in Mexico are described with special emphasis upon education programmes and types of care in nursing homes. Considering the future trends of an increase in Mexico's elderly population, the author calls for more efforts in research and training in the field of gerontology. First results in this area are reported.

  14. Dark humic alluvial paleosols in Central and Southern Mexico: Micromorphological indicators of Late Pleistocene megafauna habitats Paleosuelos aluviales con humus oscuro en el Centro y Sur de México: indicadores micromorfológicos de los hábitats de la megafauna del Pleistoceno tardío Paleosolos aluviais com húmus escuro no Centro e Sul do México: indicadores micromorfológicos dos habitats da megafauna do Pleistocénico tardio

    Directory of Open Access Journals (Sweden)

    Rosa E. Tovar

    2013-11-01

    Full Text Available During the Late Pleistocene, Mexico had a richer fauna than today with many different forms of megafauna that are now extinct. However, the ecosystems they inhabited and the particular ecological niches that they occupied are still poorly understood. Most of the findings of Pleistocene megafauna have been in alluvial deposits that present rich opportunities for paleoecological studies using paleopedological records. Floodplain paleosols commonly are poorly developed. However, micromorphological analysis provides information about the grade of development of the soil at a microscale, discriminating between genetic and sedimentary processes; thus helping in the identification of the environmental setting in which they formed. We analyzed the micromorphology of six pedogenetic units in the sequences of Santa Cruz Nuevo and Axamilpa, in the south of Puebla, and Huexoyucan, in the state of Tlaxcala. These pedosequences correspond to the second half of marine isotopic stage 3 (MIS3, MIS2 and the early Holocene. All studied units are characterized by strong pigmentation with dark humus. The micromorphological analysis of MIS3 paleosols reveals aquatic conditions with evidence of freshwater biota and microlamination as well as pedogenetic features of hydrogenic carbonate precipitation and redoximorphic processes. The dark paleosols of MIS2 and the early Holocene demonstrate signs of stronger coprogenic aggregation, weathering and fewer gleyic features. Comparison with modern soils shows that the latter were formed under better-drained, aerated conditions that exclude redoximorphic processes. We conclude that the dark colored Pleistocene paleosol units are indicative of different paleo-landscapes: wetlands in the MIS3 and moist meadows in MIS2 – early Holocene. The swampy ecosystems could play an important role as a megafauna habitat.En el Pleistoceno Tardío, México tenía una diversidad faunística más rica que en la actualidad, con diferentes

  15. SUR. Breve informe de la Expedición Yelcho al Polo Sur (1909-1910

    Directory of Open Access Journals (Sweden)

    Ursula K. Le Guin

    2013-12-01

    Full Text Available Ursula K. Le Guin Escritora norteamericana, famosa por sus obras de ciencia fi cción y fantasía, en las cuales el tema de género ocupa una posición central. Ganadora de los premios Hugo y Nébula que la catapultaron a la fama. “SUR. A summary report of the Yelcho expedition to the Antarctic, 1909-1910”. Apáreció publicado por primera vez en la revista New Yorker, el 1° de febrero de 1982. La palabra SUR aparece en español en el original. (http://www.newyorker.com/ar Traducción de Susana E. Matallana Peláez

  16. Sexualidad, migraciones y fronteras en contextos de integración sur-sur

    Directory of Open Access Journals (Sweden)

    Martha Cecilia Ruiz

    Full Text Available Resumen Este artículo se pregunta sobre los procesos de diferenciación, jerarquización e inclusión/exclusión de poblaciones migrantes en contextos migratorios sur-sur, y sobre el rol que juega la sexualidad en estos procesos. Partiendo de un estudio etnográfico sobre las migrantes peruanas y colombianas en el sector del comercio sexual de Ecuador, se analiza la manera en que la sexualidad se convierte en un sitio privilegiado para re-imaginar las diferencias y jerarquías nacionales en un mundo globalizado e integrado regionalmente, y se explica cómo los regímenes de control sobre las migraciones y la sexualidad femenina se articulan entre sí para restablecer el orden idealizado de la nación.

  17. Pilot scale electron bombardment furnace for continuous casting; application to the trial preparation of 20 kg of uranium monocarbide rods; Appareil pilote de fusion par bombardement d'electrons et coulee continue - application a un essai de fabrication portant sur 20 kg de barreaux de monocarbure d'uranium

    Energy Technology Data Exchange (ETDEWEB)

    Trouve, J; Genard, R; Treillou, A; Accary, A [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1964-07-01

    The authors describe a pilot scale electron beam furnace designed for continuous melting and casting of uranium-carbon alloys. This equipment allows the melting and casting processes to be completely automatically controlled, the cooling being carried out under vacuum and the discharge being effected without breaking the vacuum. In a pre-production run of 20 kg of slugs, the composition of practically all the pieces was controlled within {+-} 0,1 per cent C. The output of the furnace was 2,2 kg/hour. (authors) [French] Les auteurs decrivent un appareil pilote de fusion par bombardement d'electrons et coulee continue. Cet appareil, muni d'un systeme de coulee automatique, permet la fusion et la coulee d'alliages uranium-carbone, leur refroidissement sous vide et leur defournement, toutes ces operations se deroulant d'une maniere continue. Ils montrent qu'au cours d'une campagne preliminaire de fusion et coulee de 20 kg de barreaux, la teneur en carbone de la quasi-totalite des barreaux obtenus est controlee a 0,1 pour cent pres. La production horaire de l'appareillage est de 2,2 kg. (auteurs)

  18. Determination of electromagnetic modes in oversized corrugated waveguides on the electron cyclotron resonance heating installation at the tokamak Tore Supra; Determination de modes electromagnetiques de guides d'ondes corrugues surdimensionnes sur l'installation de chauffage des electrons de tokamak Tore Supra

    Energy Technology Data Exchange (ETDEWEB)

    Courtois, L

    2001-03-09

    Electron cyclotron resonance heating (ECRH) in the Tore Supra tokamak constitutes an important step in the research aimed at obtaining thermonuclear fusion reactions. Electron heating is achieved by transmitting an electromagnetic wave from the oscillators (gyrotrons) to the plasma via the fundamental mode, propagating in oversized corrugated waveguides. Maximizing the proportion of the gyrotron power coupled to the fundamental waveguide mode is essential for the good functioning of the transmission line and for maximizing the effect on the plasma. This thesis gives all necessary tools for finding the proportion of the fundamental mode and all other modes present in passive components and at the output of the gyrotron as installed in the Tore Supra ECRH plant. This characterisation is based on obtaining amplitude and phase diagrams of the electric field on a plane transverse to the propagation axis. The most difficult part of obtaining these diagrams is measuring the phase which, despite the very short wavelength, is measured directly at low power levels. At high power levels the phase is numerically reconstructed from amplitude measurements for gyrotron characterisation. A complete theoretical study of the phase reconstruction code is given including its validation with theoretical diagrams. This study allows the realisation of a modal characterisation unit electromagnetic for measurement of radiated beams and usable in each part of the ECRH installation. At the end, the complete modal characterisation is given at low level for a mode converter and also at high level for the first series gyrotron installed at TORE SUPRA. (author)

  19. Density and field effect on electron-ion collision cross-sections in hot dense plasma; Etude de l'influence de l'environnement plasma sur les sections efficaces d'excitation collisionnelle electron-ion dans un plasma chaud et dense

    Energy Technology Data Exchange (ETDEWEB)

    Gaufridy de Dortan, F. de

    2003-03-15

    Collisional excitation cross-sections are essential for the modeling of the properties of non equilibrium plasmas. There has been a lot of work on electron impact excitation of isolated ions, but in dense plasmas, neighboring particles are expected to widely disturb these electron transitions in atoms. Plasma modeling through a radially perturbed potential has already been done but is not satisfactory as it does not account for levels degeneracy breaking and its consequences. Introduction of a quasistatic electric micro-field of neighboring ions allows us to break spherical symmetry. Our original theoretical study has given birth to a numerical code that accurately computes collisional strengths and rates (in the Distorted Waves approach) in atoms submitted to a realistic micro-field. Hydrogen- and helium-like aluminium is studied. Stark mixing widely increases rates of transitions from high l levels and forbidden transitions are field-enhanced by many orders of magnitude until they reach allowed ones. Eventually, we conduct an elementary stationary collisional radiative study to investigate field-enhancement effects on corresponding line shapes. In cases we study (aluminium, hydrogen- and helium-like) we find a relatively weak increase of K-shell line broadening.

  20. Mexico and Central America.

    Science.gov (United States)

    Bronfman, M

    1998-01-01

    This article reviews the literature on migration and HIV/AIDS in Mexico and Central America, including Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, and Panama. Most migrants travel to the US through Mexico. US-Mexico trade agreements created opportunities for increased risk of HIV transmission. The research literature focuses on Mexico. Most countries, with the exception of Belize and Costa Rica, are sending countries. Human rights of migrants are violated in transit and at destination. Migration policies determine migration processes. The Mexican-born population in the US is about 3% of US population and 8% of Mexico's population. About 22% arrived during 1992-97, and about 500,000 are naturalized US citizens. An additional 11 million have a Mexican ethnic background. Mexican migrants are usually economically active men who had jobs before leaving and were urban people who settled in California, Texas, Illinois, and Arizona. Most Mexican migrants enter illegally. Many return to Mexico. The main paths of HIV transmission are homosexual, heterosexual, and IV-drug-injecting persons. Latino migrants frequently use prostitutes, adopt new sexual practices including anal penetration among men, greater diversity of sexual partners, and use of injectable drugs.

  1. Mexico's nuclear paradox

    International Nuclear Information System (INIS)

    Redclift, M.

    1989-01-01

    Opposition to Mexico's nuclear reactors at Laguna Verde has grown during the last two years. The nuclear programme is blamed for being expensive and wasteful, and the decision to rely on the USA contradicts Mexico's espoused policy of greater independence from the USA. The way in which petroleum revenues were used to precipitate the nuclear option is compared with the lack of urgency given to renewable energy and greater energy efficiency. From a social and environmental perspective, as well as an economic one, Mexico's nuclear programme is judged expensive and irrelevant. (author)

  2. Jojoba, Simmondsia chinensis: an alternative for the economic development of the arid and semi arid zones of Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Sepulveda Betancourt, J I; Parra Hake, H

    1976-01-01

    Simmondsia chinensis is, in spite of its name, a species indigenous to SE California and Arizona (US) and to the states of Sonora, Baja California Norte and Baja California Sur in Mexico. It is a shrubby forage plant that reaches a height of 1.5 m and can grow under conditions of extreme drought and high salinity provided that frost does not occur; it is thus suitable for many arid and semi-arid parts of Mexico as well as other similar regions of the world. The seed, traditionally associated with medicinal properties, was found in 1933 to produce a liquid wax with properties similar to those of sperm-whale oil, an increasingly scarce product used for the lubrication of machinery run at high temperatures and speeds. Some other uses for S. chinensis wax are listed, and silvicultural research on the species in progress in Baja California Sur and elsewhere is briefly described.

  3. Jojoba, Simmondsia chinensis. An alternative for the economic development of the arid and semi arid zones of Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Sepulveda Betancourt, J I; Parra Hake, H

    1976-01-01

    S. chinensis is, in spite of its name, a species indigenous to SE California and Arizona (US) and to the states of Sonora, Baja California Norte and Baja California Sur in Mexico. It is a shrubby forage plant that reaches a height of 1.5 m and can grow under conditions of extreme drought and high salinity provided that frost does not occur; it is thus suitable for many arid and semi-arid parts of Mexico as well as other similar regions of the world. The seed, traditionally associated with medicinal properties, was found in 1933 to produce a liquid wax with properties similar to those of sperm-whale oil, an increasingly scarce product used for the lubrication of machinery run at high temperatures and speeds. Some other uses for S. chinensis wax are listed, and silvicultural research on the species in progress in Baja California Sur and elsewhere is briefly described.

  4. Silencing criticism in Mexico

    Directory of Open Access Journals (Sweden)

    Ximena Suárez

    2017-10-01

    Full Text Available Journalists and human rights defenders in Mexico are being attacked in an attempt to silence their criticism. Many are forced to flee or risk being assassinated. The consequences are both personal and of wider social significance.

  5. New Mexico State Boundary

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The TIGER/Line Shapefiles are an extract of selected geographic and cartographic information from the Census MAF/TIGER database. The Census MAF/TIGER database...

  6. New Mexico Federal Lands

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This map layer consists of federally owned or administered lands of the United States, Puerto Rico, and the U.S. Virgin Islands. Only areas of 640 acres or more are...

  7. New Mexico Mountain Ranges

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The Geographic Names Information System (GNIS) actively seeks data from and partnerships with Government agencies at all levels and other interested organizations....

  8. Mexico - Surface Weather Observations

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Mexican Surface Daily Observations taken at 94 observatories located throughout Mexico, beginning in 1872 and going up through 1981. The data resided on paper...

  9. Mexico Is Not Colombia: Alternative Historical Analogies for Responding to the Challenge of Violent Drug-Trafficking Organizations

    Science.gov (United States)

    2014-01-01

    The most glaring omission is an explicit mention of violence. Elsewhere in the world (and in different historical periods in Mexico) the presence of...Hobbesian world in which violence is met with violence, force with force. Part of this opportunity structure is the presence of a sur- plus of...police and judiciary; overpopulated , violent prisons High costs of security with rise of private security rms Reduced support for government

  10. Doing Business in Mexico

    OpenAIRE

    Zimmermann, Thomas A.

    2002-01-01

    On 1 July 2001, a far-reaching free trade agreement between the EFTA States and Mexico entered into force. ”Doing Business in Mexico” provides targeted assistance to Swiss Small and Medium-Sized Enterprises (SME) that wish to tap the potential of Mexico as both an export destination and investment location. This comprehensive guide contains information and advice on market research, market entry, and investment in this fascinating country. Part I introduces the reader to this fascinating ...

  11. Mexico tornado climatology

    Directory of Open Access Journals (Sweden)

    Manuel Macías Medrano

    2013-07-01

    Full Text Available A brief introduction on some features of tornado database in Mexico is exposed showing its substantive criteria. We resent a brief analysis about main Mexican tornadoes´ characteristics, based on data collected between 2000 to 2010, talking about spatial and temporal expressions (historical, seasonal and horary in order to show the importance of it destruction capacity and also the people´s vulnerability in Mexico.

  12. Occupational health in Mexico.

    Science.gov (United States)

    Carreón, Tania; Santos-Burgoa, Carlos; Baron, Sherry; Hernández, Sendy

    2002-01-01

    The authors discuss the maquiladoras and child labor, and offer an overview of the history of occupational safety and health in Mexico that covers laws and regulations, social security, unions, and enforcement of legislation. The organization and structure of the various institutions responsible for occupational safety and health (OSH), as well as administrative procedures, are described. This article concludes with a list of the new challenges for OSH in Mexico.

  13. Taxes sur les cigarettes en Tanzanie | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    On s'attend à ce que cette hausse du tabagisme ait d'importantes répercussions sur la santé publique et le développement économique. Il ressort de l'expérience d'autres régions que le moyen le plus efficace de renverser une telle tendance consiste à augmenter les taxes sur les cigarettes. Toutefois, les responsables des ...

  14. Le lancement canadien du Rapport sur les politiques alimentaires ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    1 mai 2018 ... Cet événement sera filmé, puis accessible en ligne sur la chaîne YouTube du CRDI. Le Rapport sur les politiques alimentaires mondiales 2018 passe en revue les principaux faits nouveaux et événements en matière de politiques alimentaires survenus au cours de l'année. D'éminents chercheurs ...

  15. Une nouvelle ouverture sur le monde pour les femmes | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    'appellent ailleurs dans le dédale d'étals et d'allées serrés. En plus de son travail sur le marché, Jertrudes est également secrétaire de l'association des femmes qui vendent sur ce marché. Le groupe est un endroit où elles ...

  16. Gestion des agroecosystemes sur le mont agou en zone forestiere ...

    African Journals Online (AJOL)

    Dans le but d'une meilleure mise en valeur de l'espace, plusieurs espèces végétales sont cultivées en association essentiellement avec Persea americana. L'approche méthodologique est basée sur des inventaires floristiques et écologiques sur 45 placettes de 25 m x 25 m dans les agrosystèmes. Une diversité de 85 ...

  17. Recherche en partenariat sur la transition nutritionnelle et les ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    l'évolution du risque a suivi et a débouché sur une stratégie de prévention ... de recherche ont pu avoir un impact sur les politiques et pro- .... Deux études étaient donc entreprises ..... à la même thématique et de recruter par eux-mêmes les.

  18. Des pratiques culturales influent sur les attaques de deux ravageurs ...

    African Journals Online (AJOL)

    La culture de tomate est attaquée par plusieurs ravageurs dont Helicoverpa armigera et Tuta absoluta. Dans le but d'évaluer l'effet des pratiques culturales de la tomate sur ces principaux ravageurs dans les Niayes (Sénégal), un échantillonnage de 98 parcelles est effectué, sur quatre cycles de culture en saison sèche, de ...

  19. Taxes sur les cigarettes en Tanzanie | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Taxes sur les cigarettes en Tanzanie. De 2002 à 2007, le tabagisme a connu une hausse de 20 % en Tanzanie, une augmentation qui devrait atteindre 46 % en 2016 si la tendance se maintient. On s'attend à ce que cette hausse du tabagisme ait d'importantes répercussions sur la santé publique et le développement ...

  20. Analyse technico–économique des Aliments densifies sur les ...

    African Journals Online (AJOL)

    Une étude portant sur l'influence des aliments densifiés sur la performance de croissance des boucs roux de Maradi a été conduite entre juillet 2016 à septembre 2016. Quarante deux (42) boucs ont été répartis au hasard en six lots de sept individus. Chaque lot correspond à un aliment ou traitement préparé à partir des.

  1. Le Projet d’Ole Lando sur les Contrats

    DEFF Research Database (Denmark)

    Holle, Marie-Louise

    2017-01-01

    En 2016 le projet de recherche le plus important jusqu’à présent sur le droit nordique des contrats a pris fin et un livre, de presque 400 pages, en a marqué l’aboutissement. Le résultat du projet est un « restatement » tel qu’il existe aux États-Unis. Le Restatement porte sur les règles et les...

  2. Lignes directrices canadiennes sur la rhinosinusite chronique

    Science.gov (United States)

    Kaplan, Alan

    2013-01-01

    Résumé Objectif Présenter un résumé clinique des lignes directrices canadiennes sur la rhinosinusite chronique (RSC) qui comporte des recommandations pertinentes aux médecins de famille. Qualité des données Les auteurs des lignes directrices ont effectué une recherche documentaire systématique dans la littérature médicale et ont rédigé une ébauche de recommandations. Une cote a été donnée à la fois en fonction de la fiabilité des données probantes et de la solidité des recommandations. On a sollicité les commentaires d’experts en contenu de l’extérieur, ainsi que l’aval des sociétés médicales (Association pour la microbiologie médicale et l’infectiologie Canada, Société canadienne d’allergie et d’immunologie clinique, Canadian Society of Otolaryngology—Head and Neck Surgery, Association canadienne des médecins d’urgence et Regroupement canadien des médecins de famille en santé respiratoire). Message principal Le diagnostic d’une RSC se fonde sur le type et la durée des symptômes et une constatation objective d’une inflammation de la muqueuse nasale ou des sinus paranasaux. La rhinosinusite chronique est catégorisée en fonction de la présence ou de l’absence de polypes nasaux et cette distinction entraîne des différences dans le traitement. On traite la rhinosinusite chronique avec polypes nasaux au moyen de corticostéroïdes par voie intranasale. Des antibiotiques sont recommandés quand les symptômes indiquent une infection (douleur ou purulence). Pour une RSC sans polypes nasaux, on recommande des corticostéroïdes par voie intranasale et des antibiotiques de deuxième ligne (par ex. combinaisons amoxicilline–acide clavulanique ou fluoroquinolones à activité accrue contre Gram positif). Une irrigation avec une solution saline, des stéroïdes par voie orale et des tests d’allergies pourraient être appropriées. Si le patient ne répond pas au traitement, il faudrait envisager d

  3. Quelques commentaires sur les personnages de fiction

    Directory of Open Access Journals (Sweden)

    Umberto Eco

    2010-06-01

    Full Text Available L’auteur met en place des observations et développe des analyses sur le statut des personnages de fiction, mettant à contribution les ressources de l’histoire, de la littérature, de la sémiotique, de la logique et de la narratologie. De quelle vie particulière vivent les personnages de roman, qui fait que nous sommes capables de les tenir pour plus réels que des personnages réels, et que nous sommes enclins à éprouver les sentiments qu’ils éprouvent, même si nous savons qu’ils n’existent pas ? Comment ces personnages de fiction existent-ils, selon quelle « partition » leur existence se développe-t-elle au point d’interférer avec la nôtre ? L’interrogation porte sur la nature de ce flux émotionnel qui s’écoule du lecteur vers les personnages de fiction et les investit de valeur, sur ce qui se projette de la vie vers le roman, entraînant avec lui le lecteur qui se trouve de la sorte impliqué malgré lui dans l’histoire, et se trouve pris dans le mécanisme de l’identification et de la vie fictive.Some commentaries about fiction charactersPutting into form a number of observations and developing an analysis on the status of fiction characters, the author draws on resources coming from history, literature, semiotic, logic et narration. What is that particular life lived by fiction characters that enable us to consider them as being more real than real characters, and to experience the feelings that they experience, even though we know that they do not exist? How do these characters exist? In other words, according to what “script” does their existence develop to the point of interfering with ours? The questioning centres on the nature of the emotional flux which flows from the reader towards the fictional characters thus giving them value, and on what it is which is projected from real life towards the novel and which is capable of sweeping up the reader who, without having particularly intended to do

  4. Antimony in the Contaminated Site of El Triunfo, Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Marmolejo-Rodríguez A. J.

    2013-04-01

    Full Text Available Antimony has properties similar to arsenic with some of its compounds toxic to humans. Therefore it is necessary to control the wastes accumulated by anthropogenic activities, such as mining, where it is in tailings to be released to the environment. According to the Environment Protection Agency, the maximum value in sediments is 11.2 mg Sb kg–1 and the Earth’s crust average is 0.2 mg Sb kg–1. In this semiarid area, the drainage basin El Carrizal is impacted with wastes of an abandoned gold mine at the Mining District El Triunfo (MD – ET which have tailings with 17,600 mg kg–1 of antimony. In the main dry river (arroyo, the Sb content is between 0.6 and 122 mg kg–1. This element is transported from the source throughout the fluvial basin to discharge into the Pacific Ocean. In the arroyo mouth we collected one sedimentary core and the sediment from dunes (28.6 – 45.7 and 6.43 – 7.74 mg Sb kg–1. This research concluded the antimony is enriched in this semiarid system, with Normalized Enrichment Factors severely enriched mainly in arroyo sediments close to the MD-ET

  5. Evolution of the east-central San Jose del Cabo basin, Baja California Sur, Mexico

    Science.gov (United States)

    McTeague, M. S.; Umhoefer, P. J.; Schwennicke, T.; Ingle, J. C.; Cortes Martinez, M.

    2006-12-01

    The San Jose del Cabo basin at the southern tip of the Baja California peninsula records the early tectonic evolution of the west side of the Gulf of California. This study focused on the east central margin of the basin. The basal La Calera Formation unconformably overlies Cretaceous granite and consists of conglomerate, pebbly sandstone and conglomerate, and sandstone deposited in alluvial fans and fan-deltas. Deposition of the La Calera Formation was from ca. 9-14 Ma. The lower member of the Trinidad Formation was deposited beginning ca. 9-13 Ma and consists of sandstone, mudstone, and shelly mudstone deposited in nearshore and estuarine environments. These age estimates are based on sedimentation rates and foraminifera and coccoliths from the NN 11A nannozone (7.4 8.6 Ma, GTS 2004). The middle member of the Trinidad Formation consists of deeper water mudstones deposited by turbidity currents and suspension settling in a shelf to slope and conglomerates deposited by submarine debris flows on the shelf. The basin began earlier than previously thought. The oldest marine rocks are ca.9-13 Ma, while sedimentation on the east side began at ca. 9-14 Ma, synchronous with estimates of initiation of offset on the San Jose del Cabo fault. The Zapote fault is a down-to-the-east normal and sinistral-oblique fault that exposes a wedge of granite and older strata in the footwall to the west. The fault was active during sedimentation in the late Miocene and possibly later. The fault divides the study area into an eastern hanging wall subbasin and western footwall subbasin. The eastern subbasin formed an embayment in the eastern margin of the Cabo basin. A regional flooding surface (ca. 8 Ma) can be correlated across the fault that marks a major marine incursion. Depositional systems evolved rapidly from coarse-grained terrestrial systems to fine-grained marine and estuarine systems. The Cabo basin provides an excellent analogue for comparison with offshore basins, which are broadly similar with more faulting in lower strata and fewer or no faulting in upper strata. Offshore seismic data show older, deformed syn-rift strata in half graben overlain by younger, undeformed post-rift strata. The normal faults with 1-5 km spacing cut the basement rock and oldest sedimentary units. The eastern margin of the Cabo basin has older, growth strata cut by the Zapote fault that are overlain by simpler strata. Smaller scale normal faults in the Cabo basin are no longer active while the Cabo fault remains active.

  6. Sedimentary gravity flows from subaerial fan-deltas in Loreto Bay, Baja California Sur, Mexico

    Science.gov (United States)

    Navarro-Lozano, José O.; Nava-Sánchez, Enrique H.; Godínez-Orta, Lucio

    2010-05-01

    Fan-deltas from Loreto Bay show recent evidences of sedimentary gravity flows as a result from catastrophic events during hurricane rainfalls. The knowledge of hydrological characteristics of these flows is important for understanding the effects of storms on fan-deltas geomorphology in this region, as well as for the urban developing planning of the city of Loreto in order to avoid hazardous zones. The analysis of precipitation and hurricane tracks data for the period 1945 to 2009 indicates that hurricanes have caused catastrophic floods every 20 years. Stratigraphy from the channel incision shows a sequence of stream flow and debris flow controlled by changes in the competence and capacity of the stream, which are associated to the gentle slope (<2 °) of the fan-deltas. However fans from the north of the bay (Arce and Gúa) show deposits of debris flows associated to catastrophic floods, which have caused the incision channel to drift towards the southern part of the fans, while flows from Las Parras fan-delta, from the middle of the bay, are dominated by stream flows. These differences in the type of the flows are controlled by lithology, shape and size of the drainage basin, and slope of the transit zone in the feeder channel.

  7. Réflexions sur la science contemporaine

    CERN Document Server

    Darriulat, Pierre

    2007-01-01

    L'auteur y brosse à grands traits un tableau de la science contemporaine : réductionnisme, déterminisme, abstraction, méthodes, mécanismes de validation et interactions entre observation et théorie... ainsi qu'un portrait de ses artisans et une critique des stéréotypes les plus courants (philistin, iconoclaste, apprenti sorcier...) L'accent est mis sur le fait que la science, dont une des missions consiste à dénoncer les illusions du sens commun, ne poursuit pas une quête de vérité absolue mais se contente aujourd'hui d'une vérité simplement meilleure que celle d'hier. La circularité de la science lui interdit de répondre à des questions essentielles comme «Pourquoi ce monde plutôt que rien ?» Pour tenter d'y répondre, le physicien Pierre Darriulat entreprend, avec candeur et bienveillance, un voyage chez les philosophes. Comment la métaphysique s'évade-t-elle du cercle ? Quelle connaissance autre que scientifique nous propose-t-elle ? La circularité condamnant la science au silence...

  8. New Mexico Property Tax Districts

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This layer represents boundaries for New Mexico tax district "OUT" categories and incorporated/municipal "IN" categories as identified on the "Certificate of Tax...

  9. New Mexico State Forestry Districts

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This dataset contains boundaries of the New Mexico Forestry Districts, plus the names of the district offices. It is in a vector digital structure digitized from a...

  10. HSIP Hospitals in New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — Hospitals in New Mexico The term "hospital" ... means an institution which- (1) is primarily engaged in providing, by or under the supervision of physicians, to...

  11. Teledermatology in Tijuana, Mexico.

    Science.gov (United States)

    Brown, Megan

    2016-12-01

    The Health Frontiers in Tijuana (HFiT) clinic is a binational partnership between the University of California, San Diego School of Medicine (San Diego, California); the Universidad Autónoma de Baja California School of Medicine (Tijuana, Mexico); and Desayunador Salesiano Padre Chava, a community grassroots organization in Tijuana, Mexico. Health Frontiers in Tijuana provides accessible quality health care for the underserved in Tijuana's Zona Norte. This article is a narrative meant to share my clinical experience as a dermatology resident who worked with HFiT to establish teledermatology services at this clinic.

  12. Mexico: a solar future

    International Nuclear Information System (INIS)

    2016-01-01

    Immersed in the global price instability of fossil fuels and with an upsurge in renewables as the agent for development, countries like Mexico, that largely depend on this resource to generate income and whose national electrical energy generation mainly comes from these fuels, find themselves obliged to take decisions that allow them to maintain their appeal compared to other emerging markets. In this decision-making process, Mexico has been slow to implement its long-awaited Energy Reform that incentivises direct foreign investment and avoids the monopolies that have until recently prevailed in the Mexican energy and electricity sector. (Author)

  13. Kir6.2 activation by sulfonylurea receptors: a different mechanism of action for SUR1 and SUR2A subunits via the same residues

    Science.gov (United States)

    Principalli, Maria A; Dupuis, Julien P; Moreau, Christophe J; Vivaudou, Michel; Revilloud, Jean

    2015-01-01

    ATP-sensitive potassium channels (K-ATP channels) play a key role in adjusting the membrane potential to the metabolic state of cells. They result from the unique combination of two proteins: the sulfonylurea receptor (SUR), an ATP-binding cassette (ABC) protein, and the inward rectifier K+ channel Kir6.2. Both subunits associate to form a heterooctamer (4 SUR/4 Kir6.2). SUR modulates channel gating in response to the binding of nucleotides or drugs and Kir6.2 conducts potassium ions. The activity of K-ATP channels varies with their localization. In pancreatic β-cells, SUR1/Kir6.2 channels are partly active at rest while in cardiomyocytes SUR2A/Kir6.2 channels are mostly closed. This divergence of function could be related to differences in the interaction of SUR1 and SUR2A with Kir6.2. Three residues (E1305, I1310, L1313) located in the linker region between transmembrane domain 2 and nucleotide-binding domain 2 of SUR2A were previously found to be involved in the activation pathway linking binding of openers onto SUR2A and channel opening. To determine the role of the equivalent residues in the SUR1 isoform, we designed chimeras between SUR1 and the ABC transporter multidrug resistance-associated protein 1 (MRP1), and used patch clamp recordings on Xenopus oocytes to assess the functionality of SUR1/MRP1 chimeric K-ATP channels. Our results reveal that the same residues in SUR1 and SUR2A are involved in the functional association with Kir6.2, but they display unexpected side-chain specificities which could account for the contrasted properties of pancreatic and cardiac K-ATP channels. PMID:26416970

  14. Environmental impact reduction through ecological planning at Bahia Magdalena, Mexico.

    Science.gov (United States)

    Malagrino, Giovanni; Lagunas, Magdalena; Rubio, Alfredo Ortega

    2008-03-01

    For analyzing basic marine and coastal characteristics we selected the potential sites where shrimp culture could be developed in a large coastal zone, Bahia Magdalena, Baja California Sur, Mexico. Based on our analysis, 6 sites were preselected and field stages of work were then developed to assess the precise suitability of each site in order to develop the proposed aquaculture activities. In ranking the suitability we were able to recommend the most appropriate places to develop shrimp culture in this region. Also, knowing the exact biological, physico-chemical and social environment, we determined the best species to cultivate, the recommended total area and the methodology to be used to lessen the environmental impact and to obtain the maximum profitability Our methodology could be used not only to select appropriate sites for shrimp culture in other coastal lagoons, but it also could be applied to assess the suitability in a quick and accurate way, of any other production activity in coastal zones.

  15. Protection gaps in Mexico

    Directory of Open Access Journals (Sweden)

    Andrea Villasenor

    2017-10-01

    Full Text Available With Mexico a major destination – and transit – country for people displaced by violence in the Northern Triangle of Central America, the Mexican government needs urgently to improve its asylum systems and procedures if they are to be fit for purpose.

  16. The Art of Mexico.

    Science.gov (United States)

    Saccardi, Marianne

    1997-01-01

    Provides an annotated bibliography of books for grades K and up which explores the folklore, poetry, fiction, and art of Mexico, and focuses on the Mayans and Aztecs and Diego Rivera and Frida Kahlo. Also suggests various research, reading, drama, music, social studies, physical education, and art activities and lists related videos and Internet…

  17. [Food security in Mexico].

    Science.gov (United States)

    Urquía-Fernández, Nuria

    2014-01-01

    An overview of food security and nutrition in Mexico is presented, based on the analysis of the four pillars of food security: availability, access, utilization of food, and stability of the food supply. In addition, the two faces of malnutrition in Mexico were analyzed: obesity and undernourishment. Data were gathered from the food security indicators of the United Nations's Food and Agriculture Organization, from the Mexican Scale of Food Security, and from the National Health and Nutrition Survey. Mexico presents an index of availability of 3 145 kilocalories per person per day, one of the highest indexes in the world, including both food production and imports. In contrast, Mexico is affected by a double burden of malnutrition: whereas children under five present 14% of stunt, 30% of the adult population is obese. Also, more than 18% of the population cannot afford the basic food basket (food poverty). Using perception surveys, people reports important levels of food insecurity, which concentrates in seven states of the Mexican Federation. The production structure underlying these indicators shows a very heterogeneous landscape, which translates in to a low productivity growth across the last years. Food security being a multidimensional concept, to ensure food security for the Mexican population requires a revision and redesign of public productive and social policies, placing a particular focus on strengthening the mechanisms of institutional governance.

  18. Christmas in Mexico.

    Science.gov (United States)

    Kern County Superintendent of Schools, Bakersfield, CA.

    The Christmas season in Mexico starts on December 16 with "las posadas," a series of religious processions in which families or neighbors reenact Joseph's search for shelter for Mary en route to Bethlehem. Those representing pilgrims travel from home to home until they are finally accepted by those representing innkeepers at a home with…

  19. Note concerning the Ecasac programme; Note sur le programme ecasac

    Energy Technology Data Exchange (ETDEWEB)

    Bras, D [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1969-07-01

    The analytical programme developed by the firm I.B.M. for ECAP electronic circuits, operated initially on the IBM 1620 computer with a certain limitation on the size of the network studied, but already equipped from the conversational angle (type-writer). The IBM 360 computers made it possible to increase the size of the network treated to 50 nodes and 200 branches, but the conversational aspect was suppressed in the ECAP 360 version. With a view to making use of the possibilities of hybrid computers, we have adapted this latter version to the EAI 8400 computer. Without diminishing it in any way, we have modified it so as to provide it with conversational characteristics by using the computers control panel; to give it still further flexibility we have made it possible to record curves during the calculation operation, and to obtain a division of the printed results. To obtain the curves, use was made of analog digital converters of the interface of the hybrid unit EAI 8900 of which the EAI 8400 computer represents the numerical section. The modifications made concern in particular the A.C. analysis and the transient analysis. They facilitate and complete the input of the data; they allow modifications to be made for the calculation of these analyses; they also improve the presentation of the results and facilitate their interpretation. They constitute finally the version ECASAC, i.e. the programme ECAP 360 made conversational by use of a type-writer, with automatic output of the curves. (author) [French] Le programme d'analyse de circuits electroniques ECAP, mis au point par la firme I.B.M., a d'abord fonctionne sur ordinateur IBM 1620 avec une certaine limitation pour la taille du reseau etudie, mais deja une optique conversationnelle (machine a ecrire). Les ordinateurs IBM 360 ont permis d'accroitre la taille du reseau permis a 50 noeuds et 200 branches, mais par contre l'optique conversationnelle fut supprimee dans la version ECAP 360. Dans le but d

  20. Sur: uma minoria cosmopolita na periferia ocidental Sur: a cosmopolitan minority on the western periphery

    Directory of Open Access Journals (Sweden)

    Maria Teresa Gramuglio

    2007-06-01

    Full Text Available Este artigo explora as condições e as disposições que tornaram possível o surgimento da revista Sur e a formação do grupo cultural de mesmo nome. Propõe critérios para uma periodização que leve em conta, junto com os indícios materiais, as circunstâncias históricas e culturais cambiantes pelas quais a publicação passou durante sua longa vida (1931-1991. Assinala alguns dos principias temas ideológicos e estéticos que foram abordados em suas páginas. Caracteriza o projeto inicial e as transformações imprimidas pela vontade de sua diretora, Victoria Ocampo, e as mudanças nas relações e problemáticas do campo intelectual.This article explores the conditions and dispositions that enabled the emergence of the magazine Sur and the formation of the cultural group of the same name. It sets out the criteria for a periodization that takes into account, along with material factors, the shifting historical and cultural circumstances experienced by the publication over its 60-year life-span (1931-1991. The text highlights some of the main ideological and aesthetic themes to have filled the magazine's pages. It describes the original project and the transformations introduced by its chief editor, Victoria Ocampo, as well as the changes in the relations and problematics of the intellectual field.

  1. Más allá de los mitos: análisis de la Cooperación Sur-Sur y Norte-Sur en el Ecuador. Sector Educación, período 2003- 2008

    OpenAIRE

    Escobar Sánchez, Wladimir Alexander

    2012-01-01

    La presente tesis de maestría analiza a la cooperación Norte-Sur y Sur-Sur como los dos principales modelos de funcionamiento de la cooperación hoy en día, a través de dos programas de ayuda internacional en el sector educación, en el período 2003-2008. El uno referente a la cooperación Norte-Sur, y el otro a la cooperación Sur-Sur. El propósito que presenta este trabajo académico es explicar a la cooperación internacional al desarrollo tomando en consideración a la teoría real...

  2. PES Impact and Leakages over Several Cohorts: The Case of PSA-H in Yucatan, Mexico

    OpenAIRE

    LE VELLY , Gwenole; Sauquet , Alexandre; CORTINA-VILLAR , Sergio

    2015-01-01

    We assess the impact of a payment for environmental services scheme implemented in Mexico, the PSA-H, over the 2005-2012 period. By studying several cohorts of program beneficiaries we are able to shed lights on the permanence of the program's impact. Based on the exploitation of 2.5 to 20m resolution SPOT images and ejido-surveys carried out in 76 ejidos located in the Cono Sur of Yucatan, we find that the program's effects are cancelled after communities choose to withdraw from the program,...

  3. Hausse des taxes sur le tabac et politiques de lutte antitabac au ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Par ailleurs, les études existantes sur les effets des taxes sur le tabac sont fondées sur l'" élasticité de la demande en fonction du prix ", une mesure qui indique l'évolution de la demande globale de cigarettes en réaction à une modification des prix, mais qui ne tient pas compte des effets d'une augmentation des taxes sur ...

  4. Rapport annuel au Parlement Loi sur la protection des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Larocque, Samia

    1 juil. 1983 ... TBS/SCT 350-63 (Rév. 2011/03). 31/03/2014. 01/04/2013. Période visée par le rapport : Reçues pendant la période visée par le rapport. Total. En suspens à la fin de la période de rapport précédente. Rapport statistique sur la Loi sur la protection des renseignements personnels. Nom de l'institution :.

  5. Commission des Nations Unies sur les produits indispensables aux ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Étude des soins de santé primaires dispensés dans les pays du cône Sud. Les pays membres du Réseau de recherche sur les systèmes et services de santé dans les pays du cône Sud (Red de Investigación en Sistemas y Servicios de Salud en el Cono Sur) ont des systèmes de... Voir davantageÉtude des soins de santé ...

  6. New Mexico Math Pathways Taskforce Report

    Science.gov (United States)

    New Mexico Higher Education Department, 2016

    2016-01-01

    In April 2015 New Mexico faculty, Dana Center staff, and New Mexico Higher Education (NMHED) co-presented the need for better math pathways statewide. Faculty from 6 institutions (New Mexico State University, New Mexico Highlands University, Dine College, Eastern New Mexico University, El Paso Community College, and San Juan College) participated…

  7. Desarrollo, identidad cultural y turismo en los oasis de Baja California Sur, México

    Directory of Open Access Journals (Sweden)

    Alexandra Sauvage

    2013-01-01

    Full Text Available This article provides an analysis of the integration of San Miguel and San José de Comondú to the process of economic globalization lived in Baja California Sur, in northwest Mexico. These rural communities are located in one of the largest oasis in the arid Baja California peninsula and face the risks of cultural commodification from the growth of the real estate and tourism sectors. In a context of diffuse integration to new markets and a weak local community involvement in the initiatives to foster economic growth, without a cultural policy that involves comundeños in defining their own heritage and the benefits of its use, the goal of local development attached to the recent public policies is questionable. We propose that a cultural policy should form the backbone of the development programmes now being elaborated, so as to articulate regional development needs with cultural heritage conservation, seeking to avoid the simple commodification of local traditions and recognizing the role of the local community in (redefining their cultural values.

  8. Ligand binding and conformational changes of SUR1 subunit in pancreatic ATP-sensitive potassium channels.

    Science.gov (United States)

    Wu, Jing-Xiang; Ding, Dian; Wang, Mengmeng; Kang, Yunlu; Zeng, Xin; Chen, Lei

    2018-06-01

    ATP-sensitive potassium channels (K ATP ) are energy sensors on the plasma membrane. By sensing the intracellular ADP/ATP ratio of β-cells, pancreatic K ATP channels control insulin release and regulate metabolism at the whole body level. They are implicated in many metabolic disorders and diseases and are therefore important drug targets. Here, we present three structures of pancreatic K ATP channels solved by cryo-electron microscopy (cryo-EM), at resolutions ranging from 4.1 to 4.5 Å. These structures depict the binding site of the antidiabetic drug glibenclamide, indicate how Kir6.2 (inward-rectifying potassium channel 6.2) N-terminus participates in the coupling between the peripheral SUR1 (sulfonylurea receptor 1) subunit and the central Kir6.2 channel, reveal the binding mode of activating nucleotides, and suggest the mechanism of how Mg-ADP binding on nucleotide binding domains (NBDs) drives a conformational change of the SUR1 subunit.

  9. Droits, justice et réseaux sociaux sur Internet (Amérique latine ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ... sur la question de la protection des renseignements personnels sur Internet, ... Derechos y justicia y el movimiento social en internet (5 de agosto de 2009 ... Programme de recherche sur le virus Zika Canada-Amérique latine et Caraïbes.

  10. Hausse des taxes sur le tabac dans trois pays d'Amérique centrale ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Les chercheurs mèneront des études sur la demande de produits du tabac dans le ... sur les techniques modernes de contrôle de la chaîne d'approvisionnement, ... IWRA/CRDI sur les changements climatiques et la gestion adaptive de l'eau.

  11. Les mesures de gel et de confiscation en vertu de la Loi sur les embargos

    OpenAIRE

    Schnyder, Nicolas

    2009-01-01

    Etude du mécanisme d'adoption des mesures de gel et de confiscation en vertu de la Loi sur les embargos et leurs conséquences tant sur la personne principalement touchée par ces mesures que sur les tiers.

  12. Données préliminaires sur le paludisme humain en zones rurale et ...

    African Journals Online (AJOL)

    SARAH

    31 juil. 2017 ... axée sur le diagnostic précoce et la prise en charge rapide des ... recherche investigue sur les connaissances, attitudes et ... paludisme et (vi) sur la source de traitement du paludisme. ... technique ELISA (Burkot et al., 1984).

  13. Effet de la composition de différents substrats culturaux sur ...

    African Journals Online (AJOL)

    SARAH

    31 janv. 2014 ... Effet de la substrats culturaux sur paramètres de croissance ... des graines, mais ce substrat a donné des performances acceptables sur la croissance longitudinale des ..... élevés en conteneurs sur différents types de.

  14. Sur terre comme sur mer: organisations spatiales en mer du Nord et mer de Norvège

    Directory of Open Access Journals (Sweden)

    Maryvonne LE BERRE

    1998-09-01

    Full Text Available L'article montre, au moyen de représentations cartographiques et graphiques, les structures spatiales développées en mer pour l'exploitation des hydrocarbures. Malgré les différences de milieu, l'appropriation et l'occupation territoriales du domaine maritime s'effectuent selon les mêmes principes que sur le continent, à ceci près que ce qui s'étale en surface sur le continent se développe à la verticale en mer.

  15. Theory of the Influence of Phonon-Phonon and Electron-Phonon Interactions on the Scattering of Neutrons by Crystals; Theorie de l'influence des interactions phonon-phonon et electron-phonon sur la diffusion des neutrons par des cristaux; Teoriya vliyaniya vzaimodejstvij fonon-fonon iehlvktron-fonon na rasseyanie nejtronov kristalla-; Teoria de la influencia de las interacciones fonon-fonon y electron-fonon en la dispersion de neutrones por cristales

    Energy Technology Data Exchange (ETDEWEB)

    Kokkedee, J J.J. [Institute for Theoretical Physics of the University of Utrecht (Netherlands)

    1963-01-15

    As predicted by harmonic theory the coherent inelastic spectrums of neutrons, scattered by a single, non-conducting crystal, for a particular angle of scattering consists of a number of delta-function peaks superposed on a continuous background. The peaks correspond to one-phonon processes in which one phonon is absorbed or emitted by the neutron; the background arises from multi-phonon processes. When anharmonic forces (phonon-phonon interactions) are present, the delta-function peaks are broadened into finite peaks, while their central frequencies are shifted with respect to the harmonic values. In the case of a metal there is in addition to phonon-phonon interactions an interaction between phonons and conduction electrons, which also gives a contribution to the displacement and broadening oftheone-phononpeaks. Continuing earlier work of Van Hove (sho considered the relatively simple case of a non-conductin crystal in its ground state (T = 0{sup o}K) ), we have studied the shifts and widths of the scattering peaks as a 'result of the above-mentioned interactions by means of many particle perturbation theory, making extensive use of diagram techniques. Prerequisite to the entire discussion is the assumption that, independent of the strength of the interactions, the width of each peak is small compared to the value of the frequency at its centre; only then the peaks can be considered as being well defined with respect to the background to higher order in the interactions. This condition is expected to be fulfilled for temperatures which are not too high and values of the phonon wave vector which are not too large. Our procedure yields closed formulae for the partial scattering function describing the peaks, which can be evaluated to arbitrarily high accuracy. In particular an expansion for calculating the line shift and line width in powers of u/d and in terms of simple connected diagrams is obtained (u is an average atomic or ionic displacement, d is the smallest

  16. La cooperación Sur-Sur agrícola argentina con África Subsahariana: una historia que comienza

    OpenAIRE

    Morasso, Carla

    2015-01-01

    [es] En la última década Argentina ha sido un actor dinámico de la cooperación Sur-Sur. Sus acciones se han dirigido principalmente hacia América Latina, pero también se han promovido los vínculos con Asia y África. El artículo analiza particularmente la cooperación Sur-Sur entre Argentina y países de África Subsahariana en materia de desarrollo agrícola en el período 2003-2013, donde se destacan los roles del Fondo Argentino de Cooperación Sur-Sur y Triangula...

  17. Radon availability in New Mexico

    International Nuclear Information System (INIS)

    McLemore, V.T.

    1995-01-01

    The New Mexico Bureau of Mines and Mineral Resources (NMBMMR) in cooperation with the Radiation Licensing and Registration Section of the New Mexico Environment Department (NMED) and the US Environmental Protection Agency (EPA) have been evaluating geologic and soil conditions that may contribute to elevated levels of indoor radon throughout New Mexico. Various data have been integrated and interpreted in order to determine areas of high radon availability. The purpose of this paper is to summarize some of these data for New Mexico and to discuss geologic controls on the distribution of radon. Areas in New Mexico have been identified from these data as having a high radon availability. It is not the intent of this report to alarm the public, but to provide data on the distribution of radon throughout New Mexico

  18. U.S.-Mexico energy

    International Nuclear Information System (INIS)

    1991-05-01

    This paper reports that while Mexico's petrochemical industry has grown rapidly, it now faces shortages both in investment funds and in supplies of basic petrochemicals due to a financial crisis in the 1980s. Mexico has undertaken a series of policy reforms aimed at encouraging foreign and private investment, but these efforts have generally failed to entice U.S. investment in Mexico. U.S. petrochemical companies have cited unfavorable market conditions, insufficient basic petrochemical capacity in Mexico, concern about the reversibility of Mexican reforms, inadequate Mexican protection of intellectual property rights, and lack of investment protection for U.S. businesses as impediments to investment in Mexico. Cooperation between the two nations in overcoming these obstacles could help U.S. petrochemical companies maintain their positions in a competitive global market, while at the same time provide Mexico with much needed capital investment and technological expertise

  19. ALARA development in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, M.A.M. [Instituto Nacional de Investigaciones Nucleares, Col Lomas de Barrilaco (Mexico)

    1995-03-01

    Even though the ALARA philosophy was formally implemented in the early 1980`s, to some extent, ALARA considerations already had been incorporated into the design of most commercial equipment and facilities based on experience and engineering development. In Mexico, the design of medical and industrial facilities were based on international recommendations containing those considerations. With the construction of Laguna Verde Nuclear Power Station, formal ALARA groups were created to review some parts of its design, and to prepare the ALARA Program and related procedures necessary for its commercial operation. This paper begins with a brief historical description of ALARA development in Mexico, and then goes on to discuss our regulatory frame in Radiation Protection, some aspects of the ALARA Program, efforts in controlling and reducing of sources of radiation, and finally, future perspectives in the ALARA field.

  20. Neuropsychology in Mexico.

    Science.gov (United States)

    Ostrosky Shejet, Feggy; Velez Garcia, Alicia

    2016-11-01

    This invited paper explores the diverse pathways that have led to the development of neuropsychology in Mexico. The authors conducted a review of the literature and their own experiences to describe the seminal events and people relevant to the development of this area of research and practice. The master's degree is the usual level of educational attainment for those who wish to practice clinical neuropsychology. As of now, there is not a board certification process in neuropsychology, although there is one in clinical psychology. Neuropsychology and other mental health disciplines in Mexico and Latin America have historically been poorly funded, and have lacked optimal means of communication as to research findings and clinical initiatives and standards. However, there is reason to think that this will be improved upon in coming years.

  1. Conférence sur l'efficacité

    CERN Document Server

    Jullien, François

    2005-01-01

    Philosophe et sinologue, François Jullien présente ici une conférence qu'il a prononcée auprès de chefs d'entreprise et dans le milieu du management. D'un côté, la conception européenne de l'efficacité est liée à la modélisation comme à la finalité et revendique l'action jusqu'à l'héroïsme ; de l'autre, la pensée chinoise de l'efficience, indirecte et discrète, s'appuie sur le potentiel de situation et induit des " transformations silencieuses ", sans éclat ni même événement. Par-delà cet écart, il s'agira d'interroger la nature de l'effectivité ; ou comment l'intervention humaine réussit à se brancher sur la propension des choses et s'y laisse intégrer. Ce propos se garde donc de séparer tant soit peu l'art d'opérer sur des situations et l'exercice de la philosophie ; en résultent des effets de lecture portant sur l'histoire du XXe siècle ainsi que la géopolitique - et géoéthique - à venir.

  2. Connaissances et attitudes des manipulateurs radio du Togo sur l ...

    African Journals Online (AJOL)

    Objectif : Evaluer les connaissances et les attitudes des manipulateurs togolais sur l'irradiation médicale des grossesses. Matériels et Méthode : Etude transversale menée en Avril 2011 chez 72 manipulateurs de radiologie des structures sanitaires publiques et privées du Togo. Résultats : Le quart des manipulateurs ...

  3. Sur?Surva - the Forgotten God [In Bulgarian

    Directory of Open Access Journals (Sweden)

    G. Simeonova

    2014-12-01

    Full Text Available Тhis paper deals with the neglected god – Sur/Surva. The author considers in full detail this problem, finding an evidence for the statements proposed by a new perusal of Stefan Verkovich’s Veda Slovena.

  4. Suivi sur le programme de mentorat de journalistes scientifiques des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    12 oct. 2010 ... Godefroy Chabi, un jeune journaliste scientifique, se présente à l'accueil d'un ... Il doit rédiger un article sur l'éducation et les droits de l'homme. ... et de Agence suédoise de coopération internationale au développement.

  5. La croissance demographique et son impact sur le developpement ...

    African Journals Online (AJOL)

    La croissance demographique et son impact sur le developpement des grandes villes au ... La ville de Porto-Novo au Bénin n'est pas en marge de cette réalité que ... and the need for improving its framework of life through its development.

  6. Soutien institutionnel à des organismes de recherche sur les ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Asie du Sud (le Bangladesh, l'Inde, le Népal, le Pakistan et le Sri Lanka). Parmi les 16 demandeurs d'Asie du Sud retenus, neuf viennent de l'Inde. La recherche sur les politiques en Asie du Sud s'effectue principalement en Inde, forte d'une ...

  7. Professorat de recherche sur les droits de la personne reconnus ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Pour ce projet, le CRDI s'associe à la Norman Paterson School of International Affairs (NPSIA) pour réaliser un programme de recherche portant sur les droits de la personne reconnus internationalement. La subvention servira à payer pendant deux ans la moitié du salaire et des avantages sociaux du professeur agrégé ...

  8. International Development Research Centre Act Loi sur le Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    1 juin 2009 ... research includes any scientific or technical inquiry or experimentation that is .... data centres and facilities for research and other activ- ities;. (b) initiate and ..... Loi sur la pension de la fonction publique ne s'applique pas aux ...

  9. L'IMPACT DES DEPENSES D'INFRASTRUCTURES SUR LA ...

    African Journals Online (AJOL)

    Administrateur

    l'économétrie, dans l'analyse de l'impact des dépenses d'infras- tructures sur la .... montre que les politiques budgétaires de relance peuvent avoir un impact à long terme ...... Sciences Economiques et Sciences de Gestion Université d'Alger.

  10. Renforcement de la recherche sur les politiques et du plaidoyer ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Nouveau webinaire IWRA/CRDI sur les changements climatiques et la gestion adaptive de l'eau. L'Association internationale de ressources en eau (IWRA), en étroite collaboration avec le CRDI, organise un webinaire intitulé "Changements climatiques et gestion adaptive de l'eau: des... Voir davantageNouveau webinaire ...

  11. Influence du chlorpyriphos-ethyl sur quelques paramtres de ...

    African Journals Online (AJOL)

    admin

    testicules, les caractéristiques des spermatozoïdes épididymaires et sur les performances de reproduction ont été étudiés. .... par le test d'ANOVA et séparés par le test de. Duncan au ..... Dunnick JK, Gupta BN, Harris MW, Lamb. JC. 1984.

  12. Dust storm, northern Mexico

    Science.gov (United States)

    1983-01-01

    This large dust storm along the left side of the photo, covers a large portion of the state of Coahuila, Mexico (27.5N, 102.0E). The look angle of this oblique photo is from the south to the north. In the foreground is the Sierra Madre Oriental in the states Coahuila and Nuevo Leon with the Rio Grande River, Amistad Reservoir and Texas in the background.

  13. Seismology in Mexico

    Science.gov (United States)

    Lomnitz, C.

    1982-01-01

    Mexico is situated at the intersection of four major crustal Plates: the Americas Plate, the Pacific Plate, the Caribbean Plate, and the Cocos Plate. The interaction of these four plates is very complex. The pattern of earthquake risk is, therefore, among the most complicated in the world. The average release of seismic energy each is 55x1021 ergs-more than twice the figure for California. 

  14. Mexico and the CTBT

    International Nuclear Information System (INIS)

    Aguirre G, J.; Martinez L, J.; Ruiz E, L. J.; Aragon M, I. B.

    2013-10-01

    The Comprehensive Nuclear Test-Ban-Treaty (CTBT) is a treaty that prohibits all the nuclear explosions by anybody and in any place, either on the terrestrial surface, in the atmosphere, under the sea or underground. From the adoption of this Treaty by the United Nations, Mexico has had interest for its entrance in vigor, as integral part to assure the international peace. For this reason, our country signed the Treaty since it was open in September 24, 1996 and three years later ratified it, due to Mexico is part of the group of necessary countries for their entrance in vigor. During 13 years, the country has been committed and helped to the installation of monitoring stations, actions that allow the strengthening of the International System of Surveillance. The purpose of this work is to divulge the Treaty,its technologies and benefits; and also to diffuse the works realized by Mexico regarding the radionuclides monitoring station and noble gases both certified ones for the CTBT. Besides the radionuclides technology, Mexico has taken charge of the installation and operation of the seismic stations and hydro-acoustics that have been certified too. The radionuclides station Rn-44 located in Guerrero Negro, BCS has two technologies, an automated sampler of suspended particles in air brand Cinderella/ARAME and a noble gases system Sauna used for the particles detection of radioactive material gamma emitting and Xenon radioisotopes product of nuclear assays. Both technologies are transmitting data in real time to the International Center of Data. These technologies are shown in this work. (Author)

  15. [Obesity in Mexico].

    Science.gov (United States)

    Dávila-Torres, Javier; González-Izquierdo, José Jesús; Barrera-Cruz, Antonio

    2015-01-01

    Excess body weight (overweight and obesity) is currently recognized as one of the most important challenges of public health in the world, given its size, speed of growth and the negative effect it has on the health of the population that suffers. Overweight and obesity significantly increases the risk of chronic no communicable diseases, premature mortality and the social cost of health. An estimated 90 % of cases of type 2 diabetes mellitus attributable to overweight and obesity. Today, Mexico is second global prevalence of obesity in the adult population, which is ten times higher than that of countries like Japan and Korea. With regard to children, Mexico ranks fourth worldwide obesity prevalence, behind Greece, USA and Italy. In our country, over 70 % of the adult population, between 30 and 60 years are overweight. The prevalence of overweight is higher in men than females, while the prevalence of obesity is higher in women than men. Until 2012, 26 million Mexican adults are overweight and 22 million obese, which represents a major challenge for the health sector in terms of promoting healthy lifestyles in the population and development of public policies to reverse this scenario epidemiology. Mexico needs to plan and implement strategies and action cost effective for the prevention and control of obesity of children, adolescents and adults. Global experience shows that proper care of obesity and overweight, required to formulate and coordinate multisectoral strategies and efficient for enhancing protective factors to health, particularly to modify individual behavior, family and community.

  16. Mobile exhibition in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1960-04-15

    Since January this year, a mobile atomic energy exhibition has been touring the principal cities of Mexico. In organizing this exhibition, the National Nuclear Energy Commission of Mexico was assisted by the International Atomic Energy Agency which has placed its second mobile radioisotope laboratory at the disposal of the Mexican authorities. In many States of the Republic, the visit of the mobile laboratory has given a powerful impetus to atomic training and research. Universities have made use of the laboratory for the training of young scientists in the basic isotope techniques. As a sequel to the work initiated with its aid, some universities are planning to start regular training courses in this field. The laboratory, which is a gift to the Agency from the United States, has been put to its first assignment in Mexico. It will shortly be sent to Argentina for a period of six months for use in training courses. IAEA's first mobile radioisotope unit, also donated by the United States, has been used for training purposes in Austria, the Federal Republic of Germany, Greece and Yugoslavia, and has now been sent to the Far East

  17. Mobile exhibition in Mexico

    International Nuclear Information System (INIS)

    1960-01-01

    Since January this year, a mobile atomic energy exhibition has been touring the principal cities of Mexico. In organizing this exhibition, the National Nuclear Energy Commission of Mexico was assisted by the International Atomic Energy Agency which has placed its second mobile radioisotope laboratory at the disposal of the Mexican authorities. In many States of the Republic, the visit of the mobile laboratory has given a powerful impetus to atomic training and research. Universities have made use of the laboratory for the training of young scientists in the basic isotope techniques. As a sequel to the work initiated with its aid, some universities are planning to start regular training courses in this field. The laboratory, which is a gift to the Agency from the United States, has been put to its first assignment in Mexico. It will shortly be sent to Argentina for a period of six months for use in training courses. IAEA's first mobile radioisotope unit, also donated by the United States, has been used for training purposes in Austria, the Federal Republic of Germany, Greece and Yugoslavia, and has now been sent to the Far East

  18. Youth programmes in Mexico.

    Science.gov (United States)

    Rodriguez De Macias, G

    1990-12-01

    Research indicates that in-school adolescents in Mexico have their first sexual contact at the average age of 15.5 years. In 50% of cases, such contact is with a boyfriend or girlfriend, 28.1% with a fiance, and 18.3% with a prostitute. First sexual intercourse occurs with a spouse in only 1.3% of cases. Since only one in six young people in Mexico use a form of contraception, many unwanted pregnancies outside of marriage result. 450,000 births in 1989 were to mothers below 20 years old, with 15% of births annually being among teenage mothers. An estimated three million abortions occur annually in Mexico, and abortions are the fifth major cause of death at the national level. Teen pregnancy is decisively linked with poor living conditions and life expectancy, a relatively lower level of education, and rural residence. As for psychological and anthropological variables, most teens who become pregnant belong to large, unstable families with poor family communication, and are characterized as submissive, highly dependent, and of low self-esteem. Targeting students, workers, and other youths, the MEXFAM Youth Program selects and trains program coordinators over age 21 and volunteer promoters of both sexes aged 16-20 in urban/marginal communities. Promoters offer information to their peers and other youths in their local communities, distribute barrier contraceptives, and channel medical, psychological, and legal services to young people in need. Program procedure is described.

  19. New Mexico Clean Energy Initiatives

    Science.gov (United States)

    This presentation addresses New Mexico oil and gas development, brownfields, mining development, renewable energy development, renewable resources, renewable standards, solar opportunities, climate change, and energy efficiency.

  20. Agir sur la langue pour agir sur le monde : Micropolitiques linguistiques autogérées du genre dans les brochures libertaires

    OpenAIRE

    Abbou, Julie

    2015-01-01

    La dimension agissante de la langue sur le monde entraîne avec elle, comme un appel d'air, l'action sur la langue elle-même, et l'action sur la langue n'est jamais loin de se faire action politique. Les politiques linguistiques de féminisation en sont un exemple, où l'action politique se concentre sur la catégorisation du genre. Dans de nombreux cas, la politique linguistique se fait planification linguistique, cherchant de nouvelles normes. Dans de nombreux cas, mais pas toujours. Il existe ...

  1. CARACTERIZACIÓN DEL CONSUMO DE HORTALIZAS EN LAS FAMILIAS DEL SUR-SUR DE COSTA RICA

    Directory of Open Access Journals (Sweden)

    Alexis Villalobos-Monge

    2013-01-01

    Full Text Available El objetivo de este trabajo fue determinar los diferentes aspectos cuantitativos y cualitativos que explican la cultura de consumo actual de hortalizas en las familias residentes en la zona sur-sur de Costa Rica. Este trabajo expone resultados relacionados a la caracterización realizada en el 2011 en familias residentes en la denominada zona sur-sur de Costa Rica sobre la cultura de consumo de productos hortícolas. Se aplicaron cuestionarios a una muestra estratificada de familias; lo que permitió establecer la valoración de los precios de mercado, por parte de las familias, para consumir estos alimentos, donde se determinó un valor máximo de US$1,74 millones por semana. Los principales rubros de consumo de acuerdo al valor pagado fueron el tomate, la papa, el plátano, la cebolla y el brócoli, para citar los cinco principales. También fue posible establecer valoraciones cualitativas sobre el consumo de estos productos; por ejemplo se determinó que para el 71,2% de las familias, la frescura representa la característica de mayor valor, además, el principal sitio donde los núcleos familiares realizan las compras de estos alimentos corresponde a supermercados (38,4% de los casos.

  2. Mexico: Rasgos de Su Historia. (Mexico: Highlights of Its History).

    Science.gov (United States)

    Orozco, Cecilio

    Intended for both teachers and students, this publication, written in Spanish, briefly traces Mexico's history from its Conquest in 1519 to the overthrow of Porfirio Diaz in 1910. The following are briefly discussed: Mexico's Conquest in 1519; events immediately after the fall of Tenochtitlan; the War for Independence; Texas' separation from…

  3. Financing options in Mexico`s energy industry

    Energy Technology Data Exchange (ETDEWEB)

    McKenna, J.J. [PricewaterhouseCoopers Securities, Houston, TX (United States)

    1999-10-01

    A series of brief notes accompanied this presentation which was divided into seven sections entitled: (1) capital markets update, (2) Mexican financial market update, (3) financing options in the energy industry, (4) the Venezuelan experience at La Apertura, (5) private and strategic equity alternatives, (6) Pricewaterhouse Coopers Securities, and (7) Mexico energy 2005 prediction. The paper focused on how the financial crisis and merger activity in Latin America will impact electricity reform in Mexico. It was noted that under Mexico`s Policy Proposal for Electricity Reform of the Mexican Electricity Industry, the financial community will seek to back companies in power generation, transportation and distribution. The difficulty of financing government businesses undergoing privatization was also discussed with particular emphasis on the challenge of accepting political and regulatory risks. The Latin private equity market and Canadian investment in Mexico was also reviewed. Since NAFTA (North American Free Trade Agreement) went into affect in 1994, Canadian investment in Mexico has more than tripled. Canadian companies have invested more than C$1.7 billion in Mexico since NAFTA. Pricewaterhouse Coopers Securities is a global investment bank which sees large opportunities in the Mexican energy market. They predict that in five years, Mexico will experience a gradual liberalization of the oil and gas sector, and a full liberalization of the gas pipeline and distribution business and the power generation, transmission and distribution business. 3 figs.

  4. Study of a continuous plasma generated by electron bombardment and its mixing with a laser induced plasma. Influence of collisions on resonance cone phenomenon; Contribution a l`etude d`un plasma cree de facon continue par bombardement electronique et de son melange avec un photo-plasma pulse. Influence des collisions sur les cones de resonance

    Energy Technology Data Exchange (ETDEWEB)

    Besuelle, E.

    1997-02-25

    This thesis deals with three different fields of plasma physics. In the first part, we studied free expansion of an ionised uranium vapour generated in an electron beam evaporator. The electron temperature and the electron density of the expanding plasma have been measured by a Langmuir probe. The experimental results have been compared with the ones obtained by numerical simulation using a fluid code. The calculated points are in the error bars. We observe that there are two electron populations with different temperatures, which undergo a mixing during the plasma expansion. The neutral density influence on the electron temperature by collisional relaxation is also studied. The second part deals with a plasma diagnostic which can replace Langmuir probe in the case of a cold magnetized plasma: the resonance cone phenomenon. After recalling the wave propagation theory in a cold plasma, we introduce a new calculation of the potential radiated by an antenna in a collisional magnetized plasma. The domain where the resonance cone exists in considerably reduced because of collisions. More of that, the cone angle is reduced by this phenomenon too. The experiments performed show that we must take into account a wave turbulence phenomenon to explain the High collision frequency that we observe. The third part is about the study of the expansion of a plasma into another one. We solve this problem with fluid codes and Particle-In-Cell (PIC) code. THe electron families have a counter stream motion locally. Then, we study the electrostatic extraction of two plasmas-one pulsed, one continuous-in which we observe electron unfurling. (author).

  5. Establishment of Native Grasses with Biosolids on Abandoned Croplands in Chihuahua, Mexico

    Directory of Open Access Journals (Sweden)

    Pedro Jurado-Guerra

    2013-01-01

    Full Text Available The objective of the work was to evaluate establishment and forage production of native grasses with application of biosolids, a byproduct of waste-water treatment, at an abandoned field, in Ejido Nuevo Delicias, Chihuahua, Mexico. Four biosolids rates from 0 (control to 30 dry Mg ha−1 and two methods of application, surface applied (BioSur and soil incorporated (BioInc, were evaluated. Seedbed preparation included plowing and harrowing before rainfall. Field plots of 5 × 5 m were manually sown with a mix of blue grama (Bouteloua gracilis (50% and green sprangletop (Leptochloa dubia (50% in early August 2005. Experimental design was a randomized block with a split plot arrangement. Grass density, height, and forage production were estimated for three years. Data were analyzed with mixed linear models and repeated measures. Green sprangletop density increased under all biosolids rates regardless of method of application, while blue grama density slightly decreased. Biosolids were more beneficial for green sprangletop height than for blue grama height. Blue grama forage production slightly increased, while green sprangletop forage production increased the most at 10 Mg ha−1 biosolids rate under BioSur method. It was concluded that BioSur application at 10 and 20 Mg ha−1 rates had positive effects on the establishment and forage production of native grasses, especially green sprangletop.

  6. Rapport sur le développement dans le monde

    International Development Research Centre (IDRC) Digital Library (Canada)

    By analyzing the nature, causes and consequences of violent conflict, and ...... Chile, Mexico and Nicaragua), their discourse, strategies and alliances; and an ...... sites, and to the control of other diseases such as tuberculosis and malaria.

  7. Sur un deplacement de valeurs: traire et tirer

    Directory of Open Access Journals (Sweden)

    André Burger

    1972-12-01

    Full Text Available L'étymologie de firer est inconnue. Celie que le regretté W. von Wart burg a ern pouvoir avancer est inacceptable: firer serait sorti de marty rier par la grâce d'une fausse coupure mar tirier. Il est plus qu'improbable que cette «étymologie populaire» eût pu se produire si la langue ne possédait pas au préalable un verbe tirier. Au surplus aucun fait n'appuie cette hypothèse. Le FEW, t. VI, 1, p. 396, donne bien pour firer le sens de «torturer sur un treteam>, au XIIIe siècle, et p. 403, «démembrer en faisant tirer les quatre membles par des chevaux» et «torturer (qn en l'étendant sur un tréteau” au XIVe siècle; ces sens sont évidemment trop tardifs pour permettre des conclusions sur l'origine de firer, d'autant plus qu'ils s'expliquent sans peine par la valeur normale du mot, attesté dès la Chanson de Roland, sans aucun rapport avec martirie, mot savant de clerc, qui, dans le même texte s'applique deux fois sur quatre exemples aux Sarrasins, vv. 501 et 1467, où il ne signifie pas «martyre» mais <sur son étymologie et non sur les textes, que tirer aurait à l'origine »einen starken affektiven unterton« (FEW XIII, 2, p. 185. L'étude des exemples de la Chanson de Roland, confrontés avec ceux de traire, nons amènera à une conclusion toute différente.

  8. Natural gas in Mexico

    International Nuclear Information System (INIS)

    Ramirez, M.

    1999-01-01

    A series of overhead viewgraphs accompanied this presentation which focused on various aspects of the natural gas industry in Mexico. Some of the viewgraphs depicted statistics from 1998 regarding natural gas throughput from various companies in North America, natural gas reserves around the world, and natural gas reserves in Mexico. Other viewgraphs depicted associated and non-associated natural gas production from 1988 to 1998 in million cubic feet per day. The Burgos Basin and the Cantarell Basin gas production from 1997 to 2004 was also depicted. Other viewgraphs were entitled: (1) gas processing infrastructure for 1999, (2) cryogenic plant at Cd. PEMEX, (3) average annual growth of dry natural gas production for 1997-2004 is estimated at 5.2 per cent, (4) gas flows for December 1998, (5) PGPB- interconnect points, (6) U.S. Mexico gas trade for 1994-1998, (7) PGPB's interconnect projects with U.S., and (8) natural gas storage areas. Technological innovations in the industry include more efficient gas turbines which allow for cogeneration, heat recovery steam generators which reduce pollutant emissions by 21 per cent, cold boxes which increase heat transfer efficiency, and lateral reboilers which reduce energy consumption and total costs. A pie chart depicting natural gas demand by sector shows that natural gas for power generation will increase from 16 per cent in 1997 to 31 per cent in 2004. The opportunities for cogeneration projects were also reviewed. The Comision Federal de Electricidad and independent power producers represent the largest opportunity. The 1997-2001 investment program proposes an 85 per cent sulphur dioxide emission reduction compared to 1997 levels. This presentation also noted that during the 1998-2001 period, total ethane production will grow by 58 tbd. 31 figs

  9. Mexico: Imports or exports?

    International Nuclear Information System (INIS)

    Estrada, J.

    2002-01-01

    This presentation provides an overview of Mexico's energy sector. Proven oil reserves place Mexico in ninth position in the world and fourth largest in natural gas reserves. Energy is one of the most important economic activities of the country, representing 3 per cent of Gross Domestic Product (GDP). Oil exports represent 8.4 per cent of total exports. Approximately 40 per cent of total public investment is earmarked for energy projects. The author discusses energy resources and energy sector limitations. The energy sector plan for the period 2001-2006 is discussed. Its goals are to ensure energy supply, to develop the energy sector, to stimulate participation of Mexican enterprises, to promote renewable energy sources, and to strengthen international energy cooperation. The regulatory framework is being adapted to increase private investment. Some graphs are presented, displaying the primary energy production and primary energy consumption. Energy sector reforms are reviewed, as are electricity and natural gas reforms. The energy sector demand for 2000-2010 and investment requirements are reviewed, as well as fuel consumption for power generation. The author discusses the National Pipeline System (SNG) and the bottlenecks caused by pressure efficiency in the northeast, flow restriction on several pipeline segments, variability of the Petroleos Mexicanos (PEMEX) own use, and pressure drop on central regions. The entire prospect for natural gas in the country is reviewed, along with the Strategic Gas Program (PEG) consisting of 20 projects, including 4 non-associated natural gas, 9 exploration and 7 optimization. A section dealing with multiple service contracts is included in the presentation. The authors conclude by stating that the priority is a national energy policy to address Mexico's energy security requirements, to increase natural gas production while promoting the diversification of imports, and a regulatory framework to be updated in light of current

  10. Gulf of Mexico development

    International Nuclear Information System (INIS)

    Krenz, D.

    1998-01-01

    In recent years, the Gulf of Mexico (GOM) has seen significant deepwater growth. An overview of the GOM deepwater leaseholds by Shell and developments by competing companies is presented. Deepwater GOM developments, total production from the shelf and from deepwater wells, new offshore pipeline capacity and ownership, and processing plant capacity are also discussed. Significant deepwater growth in the Gulf is anticipated. Despite significant economic and technological challenges, the area is judged to be the prime exploration and production opportunity in the lower 48 states of the USA. tabs., figs

  11. La Convention de Rio sur la diversité biologique

    OpenAIRE

    Maljean-Dubois , Sandrine

    2016-01-01

    International audience; Du 3 au 14 juin 1992, en écho à la première grande conférence onusienne sur l'environnement et le développement, celle de Stockholm organisée en 1972, se tenait à Rio de Janeiro la Conférence des Nations Unies sur l'environnement et le développement (CNUED), dite aussi Sommet de la Terre. Cette conférence marquait une étape dans la perception des enjeux environnementaux et suscitait de vifs espoirs. Un programme d'action pour le XXI ème siècle, Action 21, dont le chapi...

  12. 21 CFR 808.81 - New Mexico.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false New Mexico. 808.81 Section 808.81 Food and Drugs... and Local Exemptions § 808.81 New Mexico. The following New Mexico medical device requirement is... from preemption under section 521(b) of the act: New Mexico Statutes Annotated, section 67-36-16(F...

  13. IMPACT DU SECTEUR FINANCIER SUR L'ACTIVITE ...

    African Journals Online (AJOL)

    visant à adapter le secteur financier à l'économie de marché. Ces réformes ont pour objectif d'éliminer .... économiques (secteur privé et secteur public), deux comptes regroupant les institutions financières à savoir la .... Maroc.11 Nadia Bentaleb (2002)12 a étudié l'impact d'un investissement énergétique sur une économie ...

  14. Bilan du programme autrichien de recherche sur les paysages

    Directory of Open Access Journals (Sweden)

    Karolina Begusch-Pfefferkorn

    2009-03-01

    Full Text Available Austrian Landscape Research, a programme of the Austrian Ministry of Science, has created scientific foundations for the sustainable development of Austrian landscapes and regions (plus bordering regions. Landscapes and regions were to be explored from different angles; implementing the research findings was to be part of the research work. The programme was designed to make room for science open to society, for unconventional ideas, methods, and courses of action. Programmatic targets and research principles supported this intent. The results of the programme met with national and international approval. The ALR knowledge balance is an attempt at presenting and assessing the achievements of this comprehensive contract research programme.Le programme du Ministère autrichien des Sciences, intitulé « Recherche sur le paysage autrichien », visait à construire les fondements scientifiques d’un développement durable des paysages et des régions de l’Autriche et des territoires limitrophes. Les paysages et les régions ont été étudiés selon différentes approches disciplinaires et la mise en pratique des résultats de cette étude était partie prenante du programme de recherche. La vocation de ce programme était de faire la place à une science ouverte sur la société, à des idées, méthodes et pratiques non conventionnelles. Les objectifs du programme et les principes de recherche vont dans le sens de ces exigences. Les résultats du programme ont été reconnus sur le plan national et international. Le bilan des connaissances du programme de recherche sur le paysage autrichien (KLF a pour but de présenter et d’évaluer les performances de ce vaste programme de recherche.

  15. Incidence de la densite sur les performances de production, la ...

    African Journals Online (AJOL)

    L'étude montre l'incidence du facteur densités sur les résultats d'élevage, le rendement carcasse, la qualité organoleptique et le comportement de deux souches de poulets chair élevées au Bénin. Au total, 180 poulets de chair soit 90 poulets de chacune des souches Ross et Cobb 500 répartis en 4 traitements de trois ...

  16. Sur quelques espèces du genre Scarabaeus L

    NARCIS (Netherlands)

    Gillet, Joseph J.E.

    1909-01-01

    Dans une note insérée aux Annali del Museo Civico di storia naturale di Genova ¹), je rue suis occupé, entre autres choses, de la synonymie de quelques espèces de Scarabaeus; je désire revenir sur ce sujet et y ajouter les remarques que m’a suggérées l’examen du type de S. van der Kelleni LSBG. et

  17. Etude sur les sources de la passion du Palatinus

    NARCIS (Netherlands)

    Maas, Paul Marie

    1942-01-01

    Notre étude sur la Passion du Palatinus étant terminée, nous voudrions ajouter un aperçu des principaux résultats obtenus. Quelque modestes qu'ils soient, nous espérons que ces résultats pouront contribuer à faire mieux comprendre les rapports obscurs qui existent entre notre Passion et ses sources

  18. Regroupement des statistiques sur le secteur des TIC et analyse ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La présence et l'influence des technologies de l'information et de la communication (TIC) continuent de s'élargir et de s'accroître, tout comme leurs répercussions sur le développement économique. Toutefois, il reste encore beaucoup de travail à faire avant de pouvoir comprendre d'une manière systématique et ...

  19. Suivi sur le programme de mentorat de journalistes scientifiques des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    12 oct. 2010 ... Il doit rédiger un article sur l'éducation et les droits de l'homme. Mais les chercheurs refusent de communiquer leurs informations, le journaliste doit présenter une requête par écrit. Ce qu'il fait. Godefroy Chabi n'obtiendra jamais de réponse. Une entrave intolérable aux libertés d'accès à l'information ?

  20. SECTION 4 : BUDGET Remarque : Pour en savoir plus sur les ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    (anonymous)

    SECTION 4 : BUDGET. Remarque : Pour en savoir plus sur les restrictions budgétaires, consulter l'appel à propositions et la foire aux questions. Inscrire toutes les sommes en dollars canadiens. 4.1 Indiquez toutes les dépenses prévues (en CAD). Inscrire une valeur numérique sans caractères, ni espaces, ni virgules (p. ex ...

  1. Analyse des politiques sur la grippe aviaire | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ... à prévenir sa transmission à l'humain et à renforcer les mesures nationales de préparation en cas de pandémie de grippe aviaire. Le Partenariat de recherche sur l'influenza aviaire en Asie (APAIR) regroupe des organismes de recherche nationaux ainsi que des ministères de la Chine, du Cambodge, de l'Indonésie, ...

  2. Ciudades de madera. Patrimonio del sur, un bien reciclable

    Directory of Open Access Journals (Sweden)

    Edward Rojas V.

    1994-05-01

    Full Text Available Hace algunos años reflexionaba en una de las páginas del número especial (N° 12 de la Revista Arquitecturas del Sur, dedicado a la ciudad de Castro, que la arquitectura así como la fotografía en la medida en que son registros concretos de la acción humana tienen la cualidad de atrapar con su materialidad ese preciso instante de la historia de la que son productos.

  3. Rapport annuel au Parlement Loi sur la protection des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    3) l'innovation, la politique et la science, 4) la recherche pour l'équité en santé et ... Le Centre n'a reçu aucune plainte au sujet de l'administration de la Loi sur la ... Art. 18(2). VI. Extentions/. Prorogations des délais. 30 days or under /. 30 jours ...

  4. Influence des actions anthropiques sur la dynamique spatio ...

    African Journals Online (AJOL)

    Sci-Nat

    Située à proximité de Kinshasa, la province du Bas-Congo (R.D. Congo) est l'une des principales pourvoyeuses en produits vivriers de cette ville. Par conséquent, l'augmentation de la pression sur les ressources naturelles s'accentue. L'analyse diachronique du paysage peut servir à montrer l'effet des actions ...

  5. impacts des rejets industriels sur les eaux souterraines

    African Journals Online (AJOL)

    USER

    pollution et sont nombreuses, notamment les usines sidérurgiques, métalliques et pétrochimiques. Leurs rejets ont des effets néfastes sur les eaux de la région. Actuellement, les effluents industriels situés dans la région de Berrahal, contiennent d'importantes quantités de produits chimiques organiques et inorganiques et ...

  6. L'Avenir de la Vie sur la Terre

    CERN Document Server

    CERN. Geneva

    2007-01-01

    Notre planète va mal : réchauffement climatique, épuisement des ressources naturelles, pollutions des sols et de l'eau provoquées par les industries civiles et guerrières, disparité des richesses, malnutrition des hommes, taux d'extinction effarant des espèces vivantes, etc. La situation est-elle vraiment dramatique ? Que penser des thèses qui contestent ce pessimisme ? À partir des données scientifiques les plus crédibles - et de leurs incertitudes -, Hubert Reeves dresse un bilan précis des menaces qui pèsent sur la planète. Son diagnostic est alarmant : si la vie sur Terre est robuste, c'est l'avenir de l'espèce humaine qui est en cause. Le sort de l'aventure humaine, entamée il y a des millions d'années, va-t-il se jouer en l'espace de quelques décennies ? Notre avenir est entre nos mains. Il faut réagir, et vite, avant qu'il ne soit trop tard. Auteur de nombreux ouvrages sur l'odyssée cosmique tel Patience dans l'azur ou Poussières d'étoiles, Hubert Reeves est astrophysicien et dire...

  7. La vérite sur ce qui nous motive

    CERN Document Server

    Pink, Daniel H

    2011-01-01

    Voici enfin la traduction française du best-seller international DRIVE ! Qu'est-ce qui nous motive vraiment ? Dans quels cas sommes-nous les plus performants et les plus enthousiastes ? La plupart d'entre nous sommes persuadés que les récompenses (salaire, primes...) sont notre meilleure motivation. La logique de la carotte et du bâton finalement... Et si nous faisions fausse route ? En s'appuyant sur quatre décennies d'études scientifiques et psychologiques sur la motivation humaine, Pink démontre que les entreprises dirigent très mal leurs équipes avec d'énormes conséquences sur notre vie (absence d'ambition, lassitude, morosité). Le secret de la performance (et de la satisfaction) dans les entreprises, l'enseignement ou dans notre vie personnelle , c'est le besoin profondément humain de diriger sa propre vie, d'apprendre, de créer de nouvelles choses et de s'améliorer. Dans ce livre, Pink examine les 3 éléments de la motivation, l'autonomie, la maîtrise et le besoin de donner un sens ...

  8. Prospects for an Accelerator Program in Mexico Focused on Photon Science

    Energy Technology Data Exchange (ETDEWEB)

    Carlos Hernandez-Garcia, Mauro Napsuciale

    2011-05-01

    Recent interest in developing an accelerator-based light source in Mexico has driven several actions by the Division of Particles and Fields in Mexico, and by the electron accelerator community in the United States. We report on activities over the past two years that are very encouraging and offer a variety of possibilities to start the development of an accelerator program in Mexico. A suggested path towards this goal that would eventually lead to building, commissioning and operating a third or fourth generation light source will also be presented

  9. E-Waste Supply Chain in Mexico: Challenges and Opportunities for Sustainable Management

    Directory of Open Access Journals (Sweden)

    Samantha E. Cruz-Sotelo

    2017-03-01

    Full Text Available Electronic waste is a widespread environmental problem. From all waste streams, e-waste is registering one of the largest growing rates (between 3% and 5%. In Mexico, the e-waste recovery system comprises a mix of formal and informal sectors not well known to date. The goal of this article was to analyze electronic waste in Mexico through the active actors in the recovery chain. This article presents the evolution of studies on electronic waste in Mexico. The legal regulations and public policies were analyzed, as were the existing practices of electronic waste handling, and some challenges facing this country for waste flow management. A management model is proposed which highlights components that must be considered in the model and the opportunities and challenges to transition from an unbundled handling, which still has practices that lack environmental and technical support, to sustainable management.

  10. Mexico Wind Resource Assessment Project

    Energy Technology Data Exchange (ETDEWEB)

    Schwartz, M.N.; Elliott, D.L.

    1995-05-01

    A preliminary wind energy resource assessment of Mexico that produced wind resource maps for both utility-scale and rural applications was undertaken as part of the Mexico-U.S. Renewable Energy Cooperation Program. This activity has provided valuable information needed to facilitate the commercialization of small wind turbines and windfarms in Mexico and to lay the groundwork for subsequent wind resource activities. A surface meteorological data set of hourly data in digital form was utilized to prepare a more detailed and accurate wind resource assessment of Mexico than otherwise would have been possible. Software was developed to perform the first ever detailed analysis of the wind characteristics data for over 150 stations in Mexico. The hourly data set was augmented with information from weather balloons (upper-air data), ship wind data from coastal areas, and summarized wind data from sources in Mexico. The various data were carefully evaluated for their usefulness in preparing the wind resource assessment. The preliminary assessment has identified many areas of good-to-excellent wind resource potential and shows that the wind resource in Mexico is considerably greater than shown in previous surveys.

  11. Concilier plaisir et nutrition. Travaux des groupes de travail PNNS sur les lipides et sur le goût

    OpenAIRE

    Souliac , L.; Bizet, G.; Remy, S.

    2010-01-01

    Les ministères chargés de l'alimentation et de la santé ont incité les opérateurs à mettre sur le marché des aliments moins riches en lipides, par la signature avec l'État de chartes d'engagement sur la composition nutritionnelle. L'observatoire de la qualité de l'alimentation suit l'évolution de ces efforts. Les lipides ont un rôle technologique et sensoriel important qu'il convient de prendre en considération. Il est aujourd'hui possible d'améliorer le profil nutritionnel des aliments, tout...

  12. Le point sur les données ouvertes : réflexion sur leur rôle en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    L'ouverture de portails gouvernementaux de données ouvertes aux États-Unis et au Royaume-Uni en 2009 a été le fer de lance d'un mouvement mondial qui, près de dix ans plus tard, a été adopté par des dirigeants du monde entier, comme le montrent les objectifs de développement durable, l'accord de Paris sur le ...

  13. JUVENTUD MIGRANTE DEL SUR. APUNTES PARA SU CONSTRUCCIÓN CONCEPTUAL

    Directory of Open Access Journals (Sweden)

    Iván Francisco Porraz Gómez

    2015-12-01

    Full Text Available La migración de la población joven en la actualidad implica dinámicas y problemáticas particulares que deben ponerse a la vista para ayudarnos a entender dicho fenómeno. El análisis de la juventud migrante del sur impone la necesidad de replantearse algunas aproximaciones a su estatuto conceptual. En particular, se enfatiza que casi todas las investigaciones asumieron al migrante como un sujeto homogéneo, dotado, eso sí, de las condiciones físicas para su incursión en un mercado laboral no propio de su país, lo que supuso que mayormente fueran migrantes de edad adulta y jóvenes «maduros», como ocurrió durante muchos años de experiencia migratoria en México. NOTES FOR THE CONSTRUCTION OF THE CONCEPT OF MIGRANT YOUTH FROM THE SOUTH The current migration of youth implies specific dynamics and issues that must be evidenced in order to contribute towards an understanding of this phenomenon. An analysis of youth migrating from the south demands a reformulation of some approaches to how this notion is constructed conceptually. In particular, it should be highlighted that most pieces of research assumed migrants as a homogeneous subject, endowed of course with the physical conditions to join a labor market outside their country. The assumption was that the majority of migrants were adults and «mature» youth, as occurred for many years during the migration experience in Mexico.

  14. Texas-Mexico multimodal transportation: developments in Mexico

    Science.gov (United States)

    Boske, Leigh B.

    1994-03-01

    This presentation highlights the results of a recently completed study that examines the Texas- Mexico multimodal transport system already in place, current plans for improvements or expansion, and opportunities and constraints faced by each transport mode -- motor carriage, rail, maritime, and air. Particular emphasis is given to findings regarding transportation developments in Mexico. The study concludes that in Mexico, all modes are working at establishing new services and strategic alliances, intermodal arrangements are on the rise, and private-sector participation in infrastructure improvements is growing daily at Mexican seaports and airports as well as within that nation's highway and rail systems. This presentation looks at developments that concern privatization, deregulation, infrastructure improvements, financing arrangements, and new services in Mexico.

  15. Renforcement de l'influence de la recherche sur l'élaboration des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Réflexions

    influent sur les politiques, mais de façons différentes. Le lien entre recherche et influence sur les politiques n'est ... Renforcement de l'influence de la recherche sur l'élaboration des politiques d'adaptation. PA. NOS. /G .... ceux de la CMAE ont dit avoir besoin de soutien technique. Il était malheureusement difficile pour le ...

  16. Chaire de recherche trilatérale Canada – Afrique du Sud sur les ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le présent projet met l'accent sur les interactions entre l'humain et la faune, notamment sur les pauvres des zones rurales en pays tropical et sur l'effet des changements climatiques que ces derniers subiront. Puisant dans la recherche menée à la station de biologie expérimentale de l'Université Makere, près du parc ...

  17. Effets de six composts sur les réponses physiologiques ...

    African Journals Online (AJOL)

    Les effets de ces six composts sur le potentiel hydrique, la fuite d'électrolyte, la teneur en amidon des feuilles et sur quelques paramètres agronomiques ont été évalués sur les plantes stressées en comparaison avec les plantes témoins. Les résultats indiquent des valeurs du potentiel hydrique foliaire très faibles et une ...

  18. Mexico City aerosol study

    International Nuclear Information System (INIS)

    Falcon, Y.I.; Ramirez, C.R.

    1987-01-01

    A major task in the field of air pollution monitoring is the development of devices for determining the mass and composition of airborne particulate matter as a function of size - and time. The sample collection device must be designed giving consideration to the nature of the aerosol and to the effects of the aerosol on human health. It has been established that particles smaller than 3.5 μm in diameter can penetrate deeply into the human respiratory system, and that larger particles are trapped in the upper respiratory passages. For these reasons, it is desirable to use a dichotomous sampler to collect particles in two size ranges, rather than to collect total particulates on a single filter. The authors discuss a study in Mexico City using a dichotomous sampler

  19. Mexico introduces pentavalent vaccine.

    Science.gov (United States)

    1999-08-01

    Combination vaccines have been introduced in Mexico. The national immunization program has incorporated the measles-mumps-rubella (MMR) vaccines in 1998, and the pentavalent vaccine in 1999. The two categories of antigen composition in combination vaccines are: 1) multiple different antigenic types of a single pathogen, such as the 23 valent pneumococcal polysaccharide vaccine, and 2) antigens from different pathogens causing different diseases, such as the DPT and MMR vaccines. Pentavalent vaccines are included in the second category. The vaccine protects against diphtheria, tetanus, pertussis, hepatitis B, and other diseases produced by Haemophilus influenzae type b (Hib). Combined diphtheria, tetanus, pertussis, hepatitis B, and Haemophilus influenza type b (DTP-HB/Hib) vaccine has been distributed to 87% of Mexican children under 1 year of age. Over 800,000 doses of pentavalent vaccine have been administered.

  20. New Mexico, 2010 Census Place

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census...

  1. New Mexico, 2010 Congressional Districts

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census...

  2. New Mexico Urban Areas - Current

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The TIGER/Line Shapefiles are an extract of selected geographic and cartographic information from the Census MAF/TIGER database. The Census MAF/TIGER database...

  3. August 1973 Veracruz, Mexico Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — South of Veracruz, southeastern Mexico. Damage: Severe. The earthquake caused heavy damage in the states of Morelos, Puebla, and Veracruz. Thousands were left...

  4. United States Strategy for Mexico

    National Research Council Canada - National Science Library

    Centner, Robert C

    2005-01-01

    The security and stability of Mexico is of national interest to the United States, and a strong, effective alliance between the two countries is pivotal to our national defense strategy and economic prosperity...

  5. Influence of collisions on oscillations in a weakly ionized gas; Influence des collisions sur les oscillations dans un gaz faiblement ionise

    Energy Technology Data Exchange (ETDEWEB)

    Bertrand, P; Boulassier, J C; Briffod, G

    1962-07-01

    The influence of electron-molecule collisions on the development of waves in a Lorentzian plasma subjected to a uniform magnetic field is examined. The general dispersion equation is given. The particular case of waves propagated in the direction of the magnetic field is then studied. (authors) [French] On examine l'influence des collisions electrons-molecules sur l'evolution des ondes dans un plasma lorentzien soumis a champ magnetique uniforme. L'equation de dispersion generale est donnee. On etudie ensuite le cas particulier des ondes se propageant dans la direction du champ magnetique. (auteurs)

  6. Transportation energy use in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Sheinbaum, C.; Meyers, S.; Sathaye, J.

    1994-07-01

    This report presents data on passenger travel and freight transport and analysis of the consequent energy use in Mexico during the 1970--1971 period. We describe changes in modal shares for passenger travel and freight transport, and analyze trends in the energy intensity of different modes. We look in more detail at transportation patterns, energy use, and the related environmental problems in the Mexico City Metropolitan Area, and also discuss policies that have been implemented there to reduce emissions from vehicles.

  7. Uranium resources in New Mexico

    International Nuclear Information System (INIS)

    McLemore, V.T.; Chenoweth, W.L.

    1989-01-01

    For nearly three decades (1951-1980), the Grants uranium district in northwestern New Mexico produced more uranium than any other district in the world. The most important host rocks containing economic uranium deposits in New Mexico are sandstones within the Jurassic Morrison Formation. Approximately 334,506,000 lb of U 3 O 8 were produced from this unit from 1948 through 1987, accounting for 38% of the total uranium production from the US. All of the economic reserves and most of the resources in New Mexico occur in the Morrison Formation. Uranium deposits also occur in sandstones of Paleozoic, Triassic, Cretaceous, Tertiary, and Quaternary formations; however, only 468,680 lb of U 3 O 8 or 0.14% of the total production from New Mexico have been produced from these deposits. Some of these deposits may have a high resource potential. In contrast, almost 6.7 million lb of U 3 O 8 have been produced from uranium deposits in the Todilto Limestone of the Wanakah Formation (Jurassic), but potential for finding additional economic uranium deposits in the near future is low. Other uranium deposits in New Mexico include those in other sedimentary rocks, vein-type uranium deposits, and disseminated magmatic, pegmatitic, and contact metasomatic uranium deposits in igneous and metamorphic rocks. Production from these deposits have been insignificant (less than 0.08% of the total production from New Mexico), but there could be potential for medium to high-grade, medium-sized uranium deposits in some areas. Total uranium production from New Mexico from 1948 to 1987 amounts to approximately 341,808,000 lb of U 3 O 8 . New Mexico has significant uranium reserves and resources. Future development of these deposits will depend upon an increase in price for uranium and lowering of production costs, perhaps by in-situ leaching techniques

  8. Electronics and electronic systems

    CERN Document Server

    Olsen, George H

    1987-01-01

    Electronics and Electronic Systems explores the significant developments in the field of electronics and electronic devices. This book is organized into three parts encompassing 11 chapters that discuss the fundamental circuit theory and the principles of analog and digital electronics. This book deals first with the passive components of electronic systems, such as resistors, capacitors, and inductors. These topics are followed by a discussion on the analysis of electronic circuits, which involves three ways, namely, the actual circuit, graphical techniques, and rule of thumb. The remaining p

  9. Effect of spin disorder on resistivity; Effet du desordre de spin sur la resistivite

    Energy Technology Data Exchange (ETDEWEB)

    Gennes, P.G. de [Commissariat a l' Energie Atomique, Saclay (France); Friedel, J [Faculte des Sciences de Paris, 75 (France)

    1959-07-01

    The resistivity of magnetic metals is studied in the case where the spin carriers are bound to the atoms (ex.: rare earths). The effect of short-range order is shown to be generally small even at the critical point. The inelasticity of the magnetic collisions between electrons and lattice can also be neglected, but this approximation becomes bad at low temperatures. In this region a spin-wave approximation is used. (author) [French] On etudie l'influence des phenomenes magnetiques sur la resistivite des metaux ou les porteurs de spin sont lies aux atomes (ex.: Terres rares). Une bonne approximation a temperature suffisamment elevee consiste a negliger l'ordre a courte distance et l'inelasticite des collisions magnetiques electrons-reseau. On montre que l'effet de l'ordre a courte distance est en general negligeable meme a la temperature critique. L'approximation devient fausse a basse temperature et doit alors etre remplacee par l'approximation des ondes de spin. (auteur)

  10. Le livre sur le livre traité de documentation

    CERN Document Server

    Otlet, Paul

    2015-01-01

    Paul Otlet est considéré comme le père des sciences de l'information. Ouvrage fondateur et fondamental, le Traité de documentation. Le livre sur le livre (1934) est l'aboutissement de son travail inlassable pour rassembler, classer et partager les connaissances. Otlet y propose une remarquable synthèse du savoir sur le livre et le document en même temps qu'il anticipe Internet et l'hypertexte. La réédition du Traité de documentation, 70 ans après la disparition de son auteur, coïncide avec la réouverture du Mundaneum à Mons, où le fabuleux héritage documentaire légué par Paul Otlet et Henri La Fontaine est conservé. « Ici, la table de travail n'est plus chargée d'aucun livre. À leur place se dresse un écran et à portée un téléphone. Là-bas, au loin, dans un édifice immense, sont tous les livres et tous les renseignements. De là, on fait apparaître sur l'écran la page à lire pour connaître la réponse aux questions posées par téléphone. » Préfaces de Benoît Peeters (éc...

  11. GRABADOS RUPESTRES EN EL SUR DE LA PROVINCIA DE LUGO

    Directory of Open Access Journals (Sweden)

    Begoña González Aguiar

    2011-10-01

    Full Text Available En este artículo se plasman los resultados obtenidos tras el estudio de cincuenta estaciones rupestres ubicadas, todas ellas, en el sur de la provincia de Lugo. En un primer momento se llevaron a cabo labores de prospección y análisis de las estaciones, para su posterior estudio descriptivo, simbólico y espacial. Tales trabajos confirman la existencia de representaciones en una “zona marginada” como es la provincia de Lugo, frente a Pontevedra y A Coruña. Además, se han catalogado veinte estaciones inéditas, desconocidas hasta la fecha.

  12. sur la productivité des poulettes Effects o

    African Journals Online (AJOL)

    Au Burkina Faso, le facteur limitant dans l'alimentation des volailles est la protéine. Une étude a été menée en vue d'évaluer les effets d'une ration contenant la variété de maïs jaune « Espoir » sur les performances de croissance et de ponte chez les poulettes. Une ration contenant la variété de maïs. Espoir (ESPOIR) et ...

  13. Retour "écologique" sur la question des nitrates

    OpenAIRE

    Buson, Christian

    2012-01-01

    Un examen critique de la question des nitrates est proposé dans cet article, à la lumière des connaissances disponibles dans différentes disciplines. Au plan sanitaire, la norme sur l’eau potable établie depuis plusieurs décennies résulte d’une erreur ancienne aujourd’hui reconnue comme telle. Les nitrates n’engendrent aucun trouble sanitaire et les griefs tels que la méthémoglobinémie du nourrisson, ou le risque de cancer du à la formation de nitrosamines, qui les ont...

  14. Incidence des mesures antitabac et de la contrebande sur la ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ils intégreront les résultats préliminaires tirés de l'enquête mondiale sur le tabagisme chez les adultes qu'ont réalisée le ministère de la Santé et l'Instituto Conmemorativo Gorgas de Estudios de la Salud en 2012. Ces données seront intégrées à une analyse de la demande plus structurée comportant des intervalles ...

  15. Zoom on India | Gros plan sur l’Inde

    Directory of Open Access Journals (Sweden)

    2012-05-01

    Full Text Available Indian Energy Production and Consumption (in Million Tonnes of Oil EquivalentProduction et consommation d’énergie en Inde (en millions de tonnes d’équivalent pétroleSource: World Bank, World Bank Development Indicators, 2010.Indian Oil, Gas and Coal Imports (in Million Tonnes of Oil Equivalent, 2008*Importations indiennes de pétrole, de gaz et de charbon (en millions de tonnes d’équivalent pétrole, 2008** 2009 for coal data | 2009 pour les données sur le charbon.Sources: British Petroleum...

  16. IMPACT DE TROIS METHODES DE CONSERVATION SUR LES ...

    African Journals Online (AJOL)

    Administrateur

    bidons stérilisés sans chaux a permis d'avoir, après 8 mois de conservation, des taux de germination de. 85 et 86 %, respectivement au .... d'harmattan et battus le quatrième jour pour l'égrenage. Les semences ainsi obtenues ont été étalées en mince couches sur des claies placées sous abris. Elles y ont été séchées en.

  17. Impact des traitements physicochimiques sur la clarte des hydrogels ...

    African Journals Online (AJOL)

    Méthodes : La préparation est réalisée selon la méthode décrite par PINGNAULT utilisant 4% (P/P) d'amidon en base sèche.Sur les gels obtenu ont été déterminés successivement l'influence de la conservation au froid (4°C) par la méthode de CRAIG, de la longueur d'onde entre 400 et 700 nm, de la concentration en ...

  18. EFFETS D'UN DEFICIT HYDRIQUE SUR CERTAINS ...

    African Journals Online (AJOL)

    AISA

    Le cotonnier est connu pour sa sensibilité au déficit hydrique. Le présent travail a été initié afin de mesurer les effets de ce facteur chez la variété STAM129A de cotonnier vulgarisée au Togo. L'étude porte sur certains paramètres tels que la hauteur des plantes, la longueur des entrenœuds, le taux de rétention des ...

  19. Market survey of fuel cells in Mexico: Niche for low power portable systems

    Energy Technology Data Exchange (ETDEWEB)

    Ramirez-Salgado, Joel [Programa de Ingenieria Molecular, Instituto Mexicano del Petroleo, Eje Lazaro Cardenas No 152, 07730 D. F. (Mexico); Dominguez-Aguilar, Marco A. [Laboratorio de Sintesis Quimica y Electroquimica, Instituto Mexicano del Petroleo, Eje Lazaro Cardenas No 152, 07730 D. F. (Mexico)

    2009-01-15

    This work provides an overview of the potential market in Mexico for portable electronic devices to be potentially powered by direct methanol fuel cells. An extrapolation method based on data published in Mexico and abroad served to complete this market survey. A review of electronics consumption set the basis for the future forecast and technology assimilation. The potential market for fuel cells for mobile phones in Mexico will be around 5.5 billion USD by 2013, considering a cost of 41 USD per cell in a market of 135 million mobile phones. Likewise, the market for notebook computers, PDAs and other electronic devices will likely grow in the future, with a combined consumption of fuel cell technology equivalent to 1.6 billion USD by 2014. (author)

  20. Market survey of fuel cells in Mexico: Niche for low power portable systems

    Science.gov (United States)

    Ramírez-Salgado, Joel; Domínguez-Aguilar, Marco A.

    This work provides an overview of the potential market in Mexico for portable electronic devices to be potentially powered by direct methanol fuel cells. An extrapolation method based on data published in Mexico and abroad served to complete this market survey. A review of electronics consumption set the basis for the future forecast and technology assimilation. The potential market for fuel cells for mobile phones in Mexico will be around 5.5 billion USD by 2013, considering a cost of 41 USD per cell in a market of 135 million mobile phones. Likewise, the market for notebook computers, PDAs and other electronic devices will likely grow in the future, with a combined consumption of fuel cell technology equivalent to 1.6 billion USD by 2014.

  1. Eolic central Guerrero Negro, BCS, Mexico, performance first year operation; Central eolica Guerrero Negro, BCS, Mexico, resultados del primer ano de operacion

    Energy Technology Data Exchange (ETDEWEB)

    Cadenas Tovar, Roberto; Sanchez Cornejo, Carlos; Lopez Rios, Serafin [Comision Federal de Electricidad, Morelia, Michoacan (Mexico); Ley Romero, Jose R [Comision Federal de Electricidad, Guerrero Negro, Baja California Sur (Mexico)

    2000-07-01

    Comision Federal de Electricidad installed a 600 kW wind turbine in the Guerrero Negro isolated electrical grid to evaluate, under actual operation conditions, the contribution of wind energy in the generation of electricity. This paper describes the performance of the wind turbine in terms of its availability, power curve and electricity produced. The results have been satisfactory, electricity was supplied with a lesser fuel consumption than before. [Spanish] La Comision Federal de Electricidad instalo en Guerrero Negro, Baja California Sur, Mexico un aerogenerador de 600 kW para evaluar en condiciones reales de operacion la integracion de la energia del viento a sistemas electricos aislados basados en diesel. En este trabajo se describen los resultados del primer ano de operacion del aerogenerador en terminos de su disponibilidad, curva de potencia y generacion obtenida. Los resultados han sido satisfactorios, registrandose una reduccion en el consumo de combustible fosil en el sistema.

  2. Governability in Contemporary Mexico

    Directory of Open Access Journals (Sweden)

    Leonardo Curzio Gutiérrez

    1998-04-01

    Full Text Available Given the difficulties to establish a concept of governability and the frequent ideological usage of the term, it is much more operative to turn to the principle of governability, in the broad sense, which supports itself on five pillars: the political legitimacy of the government, the governmental efficiency to attend to the demands of society, the existence of shared social project, the agreement with the principle special interest groups, and international viability. The analysis of the structure and relevance of these five points during the long period of political transition that Mexico underwent between 1988 and 1997 shows how it was possible for this country to play off certain factors against each other in order to secure governability and safeguard against the consequences of any resultant imbalances. Between 1998-1993, the government of Salinas de Gotari based itself on the viability of a neoliberal project within an international context, and on this projectís attention to domestic demands as well as on the governmentís pact with elites. Institutional integration and legitimacy made up, then, for a process of discreet liberalization and the lack of democratic electoral commitment, which culminated in the PRI’s 1994 elections victory.The assassination of Colosia, though, and the appearance of the EZLN and the subsequent crisis surrounding the peso’s devaluation that accompanied Ernesto Zedilloís rise to power soon led to the collapse of those pillars of support. Crowning the process of the silenttransition were the elections of 1997, which makes it possible to say that in Mexico today there are now smooth elections, but that reform of the State is still unresolved —a subject that includes the reduction of the president’s competence. Seen in the short term, the most direct threats to Mexico’s governability will come as a result of the lack of attention to those demands of society’s underprivileged and the ill

  3. Natural hazards and urban policies in Mexico City

    Directory of Open Access Journals (Sweden)

    François Mancebo

    2009-07-01

    Full Text Available L’agglomération de Mexico, à plus de 2 000 mètres d’altitude, adossée à la Sierra Madre et la Cordillère Volcanique est assise sur un site accueillant mais redoutable. Il s’agit d’un des endroits les plus exposés du globe, soumis à une combinaison de risques naturels, de risques technologiques souvent mal maîtrisés dus à des industries lourdes, de nuisances, de cumul des polluants et d’un épuisement des ressources locales utilisables, tout particulièrement les ressources en eau. Après le séisme dévastateur de 1985, les acteurs de l’aménagement de Mexico tentent d’intégrer risques et durabilité dans la définition de nouvelles politiques urbaines. Mais, si les risques sont bien identifiés et des réponses sont données, leur applicabilité est quasi-nulle. Une approche normative et n’incluant pas l’ensemble de l’agglomération, mais utilisant les périphéries pour améliorer la durabilité des centres (sorte de durabilité importée à l’échelle de la métropole explique cette situation. Comme dans le mythe de Sisyphe, acteurs locaux et nationaux tentent de faire remonter la pente au rocher du risque mais ce dernier finit toujours par redescendre ? C’est qu’en réalité le problème n’est pas le rocher. Le problème, c’est la pente, c’est-à-dire le substrat fait de représentations territoriales et d’usages de l’espace qui fondent la société mexicaine, sur laquelle roule le rocher.Mexico City is located at an altitude of over 2 000 metres where it occupies an attractive but hazardous site hemmed in by the Sierra Madre and volcanic mountain ranges.The site is one of the most disaster-prone locations in the world, threatened by a combination of natural hazards, poorly controlled technological hazards created by the city’s heavy industry, pollution – particularly air pollution and diminishing local resources, the most seriously threatened being water. Since the devastating earthquake

  4. [Scientific evidence on the legalization of abortion in Mexico City].

    Science.gov (United States)

    Gayón-Vera, Eduardo

    2010-03-01

    On April 24 2007, abortion before 12 weeks became legal in Mexico City. The arguments for this decision were: diminish the maternal morbidity and mortality, avoid a "severe health problem" and accomplish the women's physical, mental and social well being. To analyze the scientific evidences that support or reject this arguments. Retrospective study realized by bibliographic search of electronic data basis and Internet portals of interested groups. Mexico is considered by the World Health Organization, one of the countries in the world with low maternal mortality rates (abortion". In the hospitals of the Mexican Institute of Social Security, maternal deaths as consequence of induced abortions were, approximately, three every year. The evidences used as arguments in favor of abortion come from studies performed in Sub-Saharan African countries, which do not apply to Mexico. The scientific evidences show that induced abortion has important psychological sequels in women, a higher frequency of illegal drug abuse, alcoholism, child abuse, low birth weight in the following pregnancy, greater risk of subsequent miscarriage and greater mortality rate. There are no scientific evidences to support the arguments used for the legal approval of abortion in Mexico City.

  5. Etude des répercussions de la pollution industrielle sur la riziculture ...

    African Journals Online (AJOL)

    Les industries spécialisées dans le textile déversent leurs eaux usées dans le ... sur les sols, les compositions chimiques des plants de riz et sur la production. ... The effluents quality varies on day, the pH from 3.9 to 10.6 and the electrical ...

  6. Renforcement des capacités de recherche sur les TIC-D au Moyen ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La recherche sur les incidences et les impacts des technologies de l'information et de la communication (TIC) sur le développement social et humain est embryonnaire au Moyen-Orient et en Afrique du Nord (région MOAN). Ce projet vise à encourager les chercheurs de la région MOAN à entreprendre des recherches ...

  7. Rapport annuel au Parlement Loi sur l'accès à l'information Centre ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    leonardi

    accès à l'information. Source. Nombre de demandes. 0. Médias. 1. Rapport statistique sur la Loi sur l'accès à l'information. Nom de l'institution : Centre de recherches pour le développement international. Période visée par le ...

  8. 75 FR 28555 - Executive Green ICT & Energy Efficiency Trade Mission to Mexico City, Mexico

    Science.gov (United States)

    2010-05-21

    ... Trade Mission to Mexico City, Mexico AGENCY: International Trade Administration, Department of Commerce... Trade Mission to Mexico City from September 27-29, 2010. This Executive led mission will focus on... & Energy Efficiency conference will take place at the World Trade Center in Mexico City. Relevant issues on...

  9. Effets de l'audit clinique basé sur des critères sur de la qualité de la ...

    African Journals Online (AJOL)

    Effets de l'audit clinique basé sur des critères sur de la qualité de la prise en charge de la prééclampsie sévère dans le Département de Gynécologie Obstétrique du Centre Hospitalier Universitaire Yalgado Ouédraogo, Ouagadougou (Burkina Faso). Sibraogo Kiemtoré, Adama Dembélé, Adama Ouattara, Hyacinthe1,2 ...

  10. Mexico's critical choices

    International Nuclear Information System (INIS)

    Marcos, E.

    1990-01-01

    In Mexico, the 1982 fall in international oil prices shook the national conscience and pushed the Mexican people in search of a new national image and toward the choices they must make to attain that image. But, according to the author of this paper, the country as a whole has already made critical choices for overall strategy and there are reasons for optimism. In the current economic environment of growing domestic demand and enhanced international competitiveness, the author sees PEMEX (the Mexican national oil company) facing not only the challenge of responding to the rapid changes taking place in the Mexican economy, but also making a significant contribution toward the solid and stable growth of the country. The relevant question is how PEMEX will live up to these expectations. This paper describes several steps PEMEX has taken already or is preparing to take in order to meet this challenge, including: investment in the domestic petrochemical industry; entry into the Eurobond market; development of new methods of project financing

  11. Retour d'expérience sur la co-construction d'un guide sur la gouvernance territoriale

    OpenAIRE

    Maurel, P.; Barbe, E.; Rey-Valette, H.; Chia, E.; Soulard, C.; Michel, L.; Pinto, M.

    2014-01-01

    / La gouvernance territoriale est devenue un enjeu majeur et une question centrale pour la mise en oeuvre des politiques publiques. Dans le cadre du programme de recherche en partenariat PSDR, un collectif hybride composé de chercheurs, de professionnels du développement territorial et d'acteurs locaux s'est réuni au sein du projet Gouv.Innov. En s'appuyant sur plusieurs terrains d'étude, ce collectif a progressivement construit une définition de la gouvernance territoriale ainsi qu'une grill...

  12. The effects of social capital on employment in Mexico

    Directory of Open Access Journals (Sweden)

    Humberto Charles Leija

    2018-04-01

    Full Text Available This article explores the influence of physical and electronic social networks on the labor market, using data from the Self-Reported Welfare Survey for Mexico in 2014. Social capital has a positive influence on the employment situation of individuals. Having more than three friends decreases the probability of being unemployed between 1,1 and 1,8%; while the family network and electronic social networks are not significant. The results suggest that family capital is a kind of "unemployment insurance" and that friends provide information about vacancies and salaries.

  13. New Mexico HUC-10 Boundaries - 2013

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This data set is a complete digital hydrologic unit boundary layer to the watershed (10-digit) 10th level for the State of New Mexico. This data set consists of...

  14. New Mexico Museums and Cultural Centers

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This dataset provides an initial version of the locations of museums and cultural centers in New Mexico, in point form, with limited attributes, compiled using...

  15. Mexico Terrain Corrected Free Air Anomalies (97)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This 2' gravity anomaly grid for Mexico, North-Central America and the Western Caribbean Sea is NOT the input data set used in the development of the MEXICO97 model....

  16. New Mexico HUC-8 Boundaries - 2013

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This data set is a complete digital hydrologic unit boundary layer to the Subbasin (8-digit) 8th level for the State of New Mexico. This data set consists of...

  17. HSIP Fire Stations in New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — Fire Stations in New Mexico Any location where fire fighters are stationed or based out of, or where equipment that such personnel use in carrying out their jobs is...

  18. DECISIONS ET COMPETITIVITE SUR LE MARCHE UNIQUE EUROPEEN

    Directory of Open Access Journals (Sweden)

    Sirghi Nicoleta

    2008-05-01

    Full Text Available L’un des traits importants du marché unique européen, a comme source le męme énoncé du principal objectif de l’intégration européenne ainsi que: l’harmonisation des niveaux du développement des Etats Membres et l’augmentation du niveau de vie dans l’ensemble de la communauté. Pour le marché unique européen, cet aspect se traduit par une permanente et soutenue augmentation de la demande. Cet ouvrage présente au début une analyse des éléments spécifiques du marché européen. Ensuite on identifie les opportunités et les risques au niveau macroéconomique adjointes aux perspectives du marché unique européen. Comme fondement on présente des stratégies du développement réalisables au niveau microéconomique que puissent assurer l’augmentation du niveau sur la compétitivité des sociétés sur le marché unique européen.

  19. Entretien sur la psychanalyse: réflexions en marge

    Directory of Open Access Journals (Sweden)

    Giuseppe Martini

    2016-08-01

    Full Text Available L’auteur propose ici un commentaire sur les points les plus importants de son entretien de février 2003 avec Paul Ricœur consacré aux rapports entre herméneutique et psychanalyse. Bien que le philosophe se situe dans une réelle continuité par rapport à sa contribution de 1965, il enrichit toutefois sa réflexion philosophique sur la psychanalyse en proposant plusieurs innovations, en ce qui concerne plus particulièrement les thèmes du récit, du soi et de l’éthique. Dans les conclusions de son commentaire, l’auteur souligne l’importance des concepts d’“irreprésentable” et d’“intraduisible”: non seulement, en effet, ces concepts sont dans la ligne de nombreuses contributions de la psychanalyse contemporaine, mais la profondeur de la réflexion ricœurienne augmente en outre leur potentiel théorique et même clinique.

  20. Feasibility analysis of a sewage sludge treatment by an irradiation plant in Mexico

    CERN Document Server

    Moreno, J; Colin, A; Tavera, L

    2002-01-01

    Technical and economic analyses of an irradiation plant for sewage sludge treatment determined that an appropriate place for the first sludge electron irradiator in Mexico would be the sewage water treatment plant located north of Toluca in the State of Mexico. This treatment plant is mainly used for domestic wastewater and produces an approximate volume of 70 ton d-] liquid sewage sludge. Considering a 50 k W power of a 10 MeV electron linear accelerator, an irradiation dose of S KGy and a treatment capacity of 346 tons per day, it is estimated that the treatment cost would be of $9.00 US dollars per ton. (Author)

  1. Sur la plurifonctionnalité du discours direct

    Directory of Open Access Journals (Sweden)

    Cigada Sara

    2012-07-01

    Full Text Available La comparaison entre les résultats de nombreux travaux sur le dialogue dans le texte littéraire, sur l’attestation linguistique de la subjectivité, sur la fonction argumentative des émotions dans le discours et sur les effets de polyphonie, suggère que la structure sémiotique et linguistique du discours direct (DD se trouve au croisement stratégique de plusieurs axes de la construction discursive. Nous étudions donc l’insertion du DD dans le discours (cf. Rosier 2008: Le discours rapporté en français; Kerbrat 2005: Le Discours en interaction et Id. 2008: Le Dialogue comme objet d’analyse linguistique; Maingueneau 2010: Manuel de linguistique pour le texte littéraire en tant que phénomène de rupture sémiotique (Genette 1972: Figures III et Id. 1983: Nouveau discours du récit, dans ses fonctions discursives plurielles, tantôt émotives (Tannen 1989: Talking Voices; Plantin-Traverso-Vosghanian 2008: Parcours des émotions en interaction, tantôt argumentatives (Doury 2001: La Fonction argumentative des échanges rapportés; Stati 1990: Le transphrastique. Du point de vue méthodologique, nous nous proposons de revisiter empiriquement, par l'étude de corpus, les traits linguistiques structuraux qui caractérisent l’insertion du DD dans un récit à l'écrit, en les comparant systématiquement aux traits de l’insertion du DD dans un récit à l'oral. Une analyse parallèle est possible en ce qui concerne les fonctions discursives, que le DD typiquement déroule dans les récits. Les fonctions du DD décrites à partir de l'étude des corpus sont plurielles: on reconnaît des fonctions fortement argumentatives d'autres plus typiquement narratives, tandis que d'autres encore amalgament les deux fonctions. Le « contrat de littéralité », qui selon Genette ne porterait jamais que sur la teneur du discours, doit donc être fortement nuancé selon les contextes, tandis que l'effet de sens le plus directement lié à la

  2. Cell for studying electron-adsorbed gas interactions; Cellule d'etudes des interactions electron-gaz adsorbe

    Energy Technology Data Exchange (ETDEWEB)

    Golowacz, H; Degras, D A [Commissariat a l' Energie Atomique, 91 - Saclay (France). Centre d' Etudes Nucleaires, Deptartement de Physique des Plasmas et de la Fusion Controlee, Service de Physique Appliquee, Service de Physique des Interractions Electroniques, Section d' Etude des Interactions Gaz-Solides

    1967-07-01

    The geometry and the technology of a cell used for investigations on electron-adsorbed gas interactions are described. The resonance frequencies of the surface ions which are created by the electron impact on the adsorbed gas are predicted by simplified calculations. The experimental data relative to carbon monoxide and neon are in good agreement with these predictions. (authors) [French] Les caracteristiques geometriques et technologiques generales d'une cellule d'etude des interactions entre un faisceau d'electrons et un gaz adsorbe sont donnees. Un calcul simplifie permet de prevoir les frequences de resonance des ions de surface crees par l'impact des electrons sur le gaz adsorbe. Les donnees experimentales sur l'oxyde de carbone et le neon confirment les previsions du calcul. (auteurs)

  3. Working without a Union in New Mexico

    Science.gov (United States)

    Adele, Niame; Rack, Christine

    2008-01-01

    In this article, the authors provide a description of the academic climate in New Mexico. Like many other places in the world today, New Mexico is trying to find an identity in an environment that the authors label "increasingly privatized, corporatized, and militarized." New Mexico's higher education salaries are lower than those in…

  4. New Mexico Charter Schools Annual Report

    Science.gov (United States)

    New Mexico Public Education Department, 2013

    2013-01-01

    In 2011, the New Mexico legislature passed changes to the Charter School Act that provided more accountability for both charters and authorizers in New Mexico. As part of that law, the Public Education Department (PED) is asked to submit an annual report on the status of charter schools in New Mexico. This is the first report submitted under that…

  5. California-Mexico gas exports eyed

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    This paper reports that two California utilities have proposed providing natural gas transportation services to Mexico. The arrangement would provide a second U.S. export sales point at the U.S.-Mexico border and perhaps help alleviate an expected surplus of gas pipeline capacity available to California. Mexico currently imports about 200 MMcfd of U.S. gas via pipelines in Texas

  6. Digital Geologic Map of New Mexico - Formations

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The geologic map was created in GSMAP at Socorro, New Mexico by Orin Anderson and Glen Jones and published as the Geologic Map of New Mexico 1:500,000 in GSMAP...

  7. CERN servers go to Mexico

    CERN Multimedia

    Stefania Pandolfi

    2015-01-01

    On Wednesday, 26 August, 384 servers from the CERN Computing Centre were donated to the Faculty of Science in Physics and Mathematics (FCFM) and the Mesoamerican Centre for Theoretical Physics (MCTP) at the University of Chiapas, Mexico.   CERN’s Director-General, Rolf Heuer, met the Mexican representatives in an official ceremony in Building 133, where the servers were prepared for shipment. From left to right: Frédéric Hemmer, CERN IT Department Head; Raúl Heredia Acosta, Deputy Permanent Representative of Mexico to the United Nations and International Organizations in Geneva; Jorge Castro-Valle Kuehne, Ambassador of Mexico to the Swiss Confederation and the Principality of Liechtenstein; Rolf Heuer, CERN Director-General; Luis Roberto Flores Castillo, President of the Swiss Chapter of the Global Network of Qualified Mexicans Abroad; Virginia Romero Tellez, Coordinator of Institutional Relations of the Swiss Chapter of the Global Network of Qualified Me...

  8. Health technology assessment in Mexico.

    Science.gov (United States)

    Gómez-Dantés, Octavio; Frenk, Julio

    2009-07-01

    The history of health technology assessment (HTA) in Mexico is examined, starting with the efforts to incorporate this topic into the policy agenda and culminating with the recent creation of a specialized public agency. Information was gathered through a bibliographic search and interviews with actors involved in HTA in Mexico. HTA efforts were developed in Mexico since the mid-1980s with the participation both of academics and of policy makers, a relationship that eventually led to the creation of the Center for Technological Excellence within the Ministry of Health. Institutionalization of HTA in resource-constrained settings requires the development of a critical mass of researchers involved in this field, the implementation of information efforts, and the establishment of strong relationships between HTA experts and policy makers.

  9. Country watch: Mexico.

    Science.gov (United States)

    San Miguel Aguirre, E

    1997-01-01

    This article describes the program activities of the Mexican National Commission on Human Rights (CNDH), which in 1994 created a program to address human rights issues of HIV-infected victims. The aim was to answer complaints of discrimination against HIV-infected persons and to modify confrontational attitudes of groups that feel infringed upon by the rights of HIV-infected persons. CNDH formed a task force of HIV/AIDS medical experts, which recommended actions for three types of discriminatory practices. Persons with HIV/AIDS (PWHA) who were confined in prison filed complaints about the lack of necessary medications or medical attention. The Official Mexican Norm for the Prevention and Control of HIV stipulates, in its Manual for the Attention of Complaints Regarding HIV/AIDS, protocols for treatment of PWHA. This manual was distributed to 31 State Human Rights Commissions in Mexico. CNDH implemented an outreach program to educate the public about HIV/AIDS, to offer training courses, and to publish written materials about discrimination against PWHA. The CNDH conducted conferences and training sessions for workers in the health services, where most violations of human rights take place. CNDH works closely with the National Board for the Prevention and Control of AIDS to assess clinical records, train staff handling complaints, and channel complaints that require CNDH intervention. CNDH conducts training workshops for nongovernmental organizations. CNDH is constrained by bureaucratic procedures that slow the process of resolving complaints and by the small CNDH staff responsible for handling the more complex cases. However, CNDH has successfully resolved a number of complaints and improved the prison conditions of PWHA.

  10. Synthesis of gravity, magnetic and thermal studies at the Las Tres Virgenes geothermal zone, Baja California Sur, Mexico. Sintesis de los estudios de gravimetria, magnetometria y termometria en la zona geotermica de Las Tres Virgenes, Baja California Sur, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Estrada, Gerardo (Departamento de Exploracion, Gerencia de Proyectos Geotermoelectricos de la Comision Federal de Electricidad, Morelia (Mexico)); Gonzalez Lopez, Macario (Residencia General de Cerro Prieto, Mexicali (Mexico))

    1998-01-15

    Las Tres Virgenes geothermal zone is located in the NE-SW central sector of a sigmoidal basin that regionally has a NW-SE trend. In the local deepest zone there is a NE-SE granodioritic basement horst acting as hydrologic barrier, that makes the fluids flow up. After moving in a direction parallel to the local horst, waters continue its regional SE-NW movement controlled by regional tectonics. The flanks of the granodioritic basement horst, and local N-S faulting act as fluid paths in the hydrothermal zone, but regional NW-SE regional faults determine the general flow direction. Both regional and local tectonics show magnetic evidences of the emplacement of magmatic bodies of intermediate to basic composition. Those along NW-SE trends are more noticeable but we consider they are not the present day heat source. Intermediate magmatism along NE-SW local trend seems to be less extensive but it is younger, so, we consider it constitutes the heat source of the hydrothermal system. Thermal data suggest that the heat source is located below the volcanic chain toward the S or SW of the wells, phenomena related with the general displacement of magmatism from NE to SW along the volcanic chain. However, recent intensive faulting permits a higher permeability in the northern sector in which there are slightly smaller temperatures but at shallower depths and with higher flow rates.

  11. Designing Distributed Generation in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Linvill, Carl [Regulatory Assistance Project, Montepelier, VT (United States); Brutkoski, Donna [Regulatory Assistance Project, Montepelier, VT (United States)

    2017-05-15

    Mexico's energy reform will have far-reaching effects on how people produce and consume electricity in the country. Market liberalization will open the door to an increasing number of options for Mexican residential, commercial, and industrial consumers, and distributed generation (DG), which for Mexico includes generators of less than 500 kilowatts (kW) of capacity connected to the distribution network. Distributed generation is an option for consumers who want to produce their own electricity and provide electricity services to others. This report seeks to provide guidance to Mexican officials on designing DG economic and regulatory policies.

  12. New Mexico Geothermal Data Base

    International Nuclear Information System (INIS)

    Witcher, J.C.; Whittier, J.; Morgan, R.

    1990-01-01

    This paper reports on the New Mexico Geothermal Data Base (NMGDB) which is a comprehensive public-domain data base of low-temperature geothermal resource information for New Mexico that is designed to assist researchers and developers. A broad range of geoscience, engineering, climatic, economic, and land status information are complied in the dBASE III PLUS data base management system for use on an IBM or IBM-compatible personal computer. A user friendly menu format with on-screen prompts allows easy and convenient use

  13. Prototype of industrial electrons accelerator

    International Nuclear Information System (INIS)

    Lopez, V.H.; Valdovinos, A.M.

    1992-01-01

    The interest and the necessity of Mexico's industry in the use of irradiation process has been increased in the last years. As examples are the irradiation of combustion gases (elimination of NO x and SO 2 ) and the polymer cross-linking between others. At present time at least twelve enterprises require immediately of them which have been contacted by electron accelerators suppliers of foreign countries. The first project step consisted in to identify the electrons accelerator type that in can be constructed in Mexico with the major number of possible equipment, instruments, components and acquisition materials local and useful for the major number of users. the characteristics of the accelerator prototype are: accelerator type transformer with multiple secondary insulated and rectifier circuits with a potential of 0.8 MV of voltage, the second step it consisted in an economic study that permitted to demonstrate the economic feasibility of its construction. (Author)

  14. Las Tierras de Nuevo Mexico. [The Lands of New Mexico.

    Science.gov (United States)

    Swadesh, Frances Leon; And Others

    New Mexico was inhabited thousands of years ago. Each group of settlers saw the land in distinct ways. For some, its beauty consisted of its quality, the abundance of water, and the hope of a good harvest. For others, its beautiful sites were of more importance. Thus, each group established its own manner of living on the land and of using it.…

  15. Opportunity for America: Mexico`s coal future

    Energy Technology Data Exchange (ETDEWEB)

    Loose, V.W.

    1993-09-01

    This study examines the history, current status and future prospects for increased coal use in Mexico. Environmental implications of the power-generation capacity expansion plans are examined in general terms. Mexican environmental law and regulations are briefly reviewed along with the new sense of urgency in the cleanup of existing environmental problems and avoidance of new problems as clearly mandated in recent Mexican government policy initiatives. It is expected that new capital facilities will need to incorporate the latest in process and technology to comply with existing environmental regulation. Technology developments which address these issues are identified. What opportunities have new initiatives caused by the recent diversification of Mexico`s energy economy offered US firms? This report looks at the potential future use of coal in the Mexican energy economy, examining this issue with an eye toward identifying markets that might be available to US coal producers and the best way to approach them. Market opportunities are identified by examining new developments in the Mexican economy generally and the energy economy particularly. These developments are examined in light of the current situation and the history which brought Mexico to its present status.

  16. Cyanobacterial diversity in extreme environments in Baja California, Mexico: a polyphasic study.

    Science.gov (United States)

    López-Cortés, A; García-Pichel, F; Nübel, U; Vázquez-Juárez, R

    2001-12-01

    Cyanobacterial diversity from two geographical areas of Baja California Sur, Mexico, were studied: Bahia Concepcion, and Ensenada de Aripez. The sites included hypersaline ecosystems, sea bottom, hydrothermal springs, and a shrimp farm. In this report we describe four new morphotypes, two are marine epilithic from Bahia Concepcion, Dermocarpa sp. and Hyella sp. The third, Geitlerinema sp., occurs in thermal springs and in shrimp ponds, and the fourth, Tychonema sp., is from a shrimp pond. The partial sequences of the 16S rRNA genes and the phylogenetic relationship of four cyanobacterial strains (Synechococcus cf. elongatus, Leptolyngbya cf. thermalis, Leptolyngbya sp., and Geitlerinema sp.) are also presented. Polyphasic studies that include the combination of light microscopy, cultures and the comparative analysis of 16S rRNA gene sequences provide the most powerful approach currently available to establish the diversity of these oxygenic photosynthetic microorganisms in culture and in nature.

  17. Un copiste inattendu à Vic-sur-Cère (Cantal

    Directory of Open Access Journals (Sweden)

    Renaud Benoit-Cattin

    2012-02-01

    Full Text Available A Vic-sur-Cère, petit bourg du Cantal, l’hôtel du Pont et du Parc abrite au rez-de-chaussée une salle de restaurant dont les quatre murs sont ornés de dix-sept peintures d’un caractère peu ou prou monumental. Leur hauteur est d’environ 1,50 m, leur largeur variant de 0,6 à 3,5 m. Quatorze d’entre elles ont été exécutées par Antoine Cayrol entre 1909 et 1914, les trois dernières par son petit-fils, Roger Cayrol, en 1954.Le grand-père, Antoine, né en 1864, est élevé à Paris. Après son service m...

  18. Commentaires sur la valeur piscicole du Canal de Roubaix (Nord

    Directory of Open Access Journals (Sweden)

    ARRIGNON J.

    1970-10-01

    Full Text Available La population piscicole du Canal de ROUBAIX a été inventoriée par pêche électrique. Trois passages, suivis chacun de l'enlèvement des poissons capturés, ont été opérés dans chacun des trois Secteurs d'inventaire. Le peuplement le plus probable ainsi estimé (par la méthode De Lury,est en rapport avec le degré de pollution du canal. On constate aussi queles poissons se cantonnent le long des berges, sur une largeur de 2 à 3mètres.L'estimation à l'hectare représente donc en réalité le stock d'une zone n'ayant que 25 % de la surface totale du Canal. Les poissons contrôlés sont pour la plupart des poissons de repeuplement.

  19. Avis 6 sur la formation à et par la recherche

    OpenAIRE

    Centre de Coopération Internationale en Recherche Agronomique pour le Développement

    2015-01-01

    La formation à et par la recherche s’appuie sur la démarche scientifique, les savoirs, les connaissances à transmettre, tout autant que l’acquisition de compétences en gestion de projet, de capacités au travail en équipe, d’une ouverture d’esprit qui favorisera la créativité. Elle doit permettre de prendre conscience de la responsabilité endossée par la communauté scientifique vis-à-vis de la société et de l’environnement, mais aussi préparer l’avenir professionnel de celle ou de celui qu...

  20. Etudes sur le Portugal au Temps de l'Humanisme

    Directory of Open Access Journals (Sweden)

    J. Cruz Costa

    1953-06-01

    Full Text Available BATAILLON (Marcel. — Etudes sur le Portugal au Temps de l'Humanisme.  Acta Universitatis Conimbrigencis, 1952, 309 pp. (Primeiro Parágrafo do Artigo O Prof. Marcel Bataillon, erudito dos mais inteligentes da França atual, autor de uma obra que é hoje impr:scindível para quem pretenda estudar o humanismo renascentista na Espanha ou em Portugal, diríamos melhor, talvez: para quem pretenda estudar o Humanismo e a Renascença, — acaba de publicar, na coleção Acta Universitatis Conimbrigencis, êste volume no qual reune alguns trabalhos da mais alta importância para o conhecimento de muitos aspectos da vida espiritual portuguêsa do século XVI.

  1. Arcs électriques sur panneaux solaires de satellite

    OpenAIRE

    Amorim, Emmanuel

    2002-01-01

    Tout au long de leur durée de vie, les satellites sont en interaction constante avec l'environnement spatial. En orbite géostationnaire, les surfaces des satellites sont par exemple chargées par les particules de la magnétosphère, en particulier par les électrons. Récemment, des pertes de puissance ont été constatées sur certains satellites situés en orbite géostationnaire. Ces anomalies ont été corrélées avec des périodes d'environnement chargeant et s'expliqueraient par une décharge électro...

  2. Components of SurA required for outer membrane biogenesis in uropathogenic Escherichia coli.

    Directory of Open Access Journals (Sweden)

    Kristin M Watts

    2008-10-01

    Full Text Available SurA is a periplasmic peptidyl-prolyl isomerase (PPIase and chaperone of Escherichia coli and other Gram-negative bacteria. In contrast to other PPIases, SurA appears to have a distinct role in chaperoning newly synthesized porins destined for insertion into the outer membrane. Previous studies have indicated that the chaperone activity of SurA rests in its "core module" (the N- plus C-terminal domains, based on in vivo envelope phenotypes and in vitro binding and protection of non-native substrates.In this study, we determined the components of SurA required for chaperone activity using in vivo phenotypes relevant to disease causation by uropathogenic E. coli (UPEC, namely membrane resistance to permeation by antimicrobials and maturation of the type 1 pilus usher FimD. FimD is a SurA-dependent, integral outer membrane protein through which heteropolymeric type 1 pili, which confer bladder epithelial binding and invasion capacity upon uropathogenic E. coli, are assembled and extruded. Consistent with prior results, the in vivo chaperone activity of SurA in UPEC rested primarily in the core module. However, the PPIase domains I and II were not expendable for wild-type resistance to novobiocin in broth culture. Steady-state levels of FimD were substantially restored in the UPEC surA mutant complemented with the SurA N- plus C-terminal domains. The addition of PPIase domain I augmented FimD maturation into the outer membrane, consistent with a model in which domain I enhances stability of and/or substrate binding by the core module.Our results confirm the core module of E. coli SurA as a potential target for novel anti-infective development.

  3. Mixed carbonate-siliciclastic sedimentation on a tectonically active margin: Example from the Pliocene of Baja California Sur, Mexico

    Science.gov (United States)

    Dorsey, Rebecca J.; Kidwell, Susan M.

    1999-10-01

    Bioclast-rich, coarse-grained deposits in the Pliocene Loreto basin provide a record of mixed carbonate and siliciclastic sedimentation at the steep hanging-wall margin of this small, fault-controlled basin. Sedimentary facies consist of sand- to gravel-sized carbonate debris mixed with volcaniclastic sand and gravel in a proximal to distal facies tract that includes matrix-rich and matrix-poor shelly conglomerate, impure calcirudite and calcarenite, mixed-composition turbidites, and bioturbated calcarenitic sandstone. Carbonate material was produced by mollusks and other benthic organisms on a narrow, high-energy shelf and mixed with volcaniclastic sand and gravel in cross-shelf channels. These mixtures were transported down a steep subaqueous slope by debris flows, grain flows, and turbidity currents, forming foresets and bottomsets of marine Gilbert-type deltas. This style of mixed carbonate-siliciclastic sedimentation has not been documented in detail elsewhere but should be locally abundant in the stratigraphic record of fault-bounded basins, particularly those with cool or nutrient-rich waters that support relatively few binding and framework-building faunas. Recognition of similar facies in other settings can provide useful insights into ancient conditions of carbonate production, oceanography, climate, and tectonics.

  4. Diet of blue marlin Makaira mazara off the coast of Cabo San Lucas, Baja California Sur, Mexico

    OpenAIRE

    Abitia Cárdenas, Leonardo Andrés; Galván Magaña, Felipe; Gutiérrez Sánchez, Francisco Javier; Rodríguez Romero, Jesús; Aguilar Palomino, Bernabé; Moehl Hitz, Almiae

    1999-01-01

    Analysis of the stomach contents of 204 blue marlin (Makaira mazara) caught by the sport-fishing fleet of Cabo San Lucas in the southern Gulf of California is presented. The specimens sampled were caught during the summer and fall of 1987, 1988, and 1989 when the sea is warm (28-30°C). Blue marlin were found to feed on 35 prey species, 3 of which represented 90% of the total stomach contents by frequency of occurrence. The main prey were epipelagic organisms from the oceanic zone and demersal...

  5. AUV Mapping and ROV Exploration of Los Frailes Submarine Canyon, Cabo Pulmo National Marine Park, Baja California Sur, Mexico

    Science.gov (United States)

    Troni, G.; Caress, D. W.; Graves, D.; Thomas, H. J.; Thompson, D.; Barry, J. P.; Aburto-Oropeza, O.; Johnson, A. F.; Lundsten, L.

    2015-12-01

    Los Frailes submarine canyon is located at the south boundary of the Cabo Pulmo National Marine Park on the southeast tip of the Baja California Peninsula. During the Monterey Bay Aquarium Research Institute (MBARI) 2015 Gulf of California expedition we used an autonomous underwater vehicle (AUV) to map this canyon from 50 m to 450 m depths, and then explored the canyon with a small remotely operated vehicle (ROV). This three day R/V Rachel Carson cruise was a collaboration with the Center for Marine Biodiversity and Conservation at Scripps Institution of Oceanography and the Centro para la Biodiversidad Marina y la Conservación in La Paz. The MBARI AUV D. Allan B. collected high resolution bathymetry, sidescan, and subbottom profiles of Los Frailes submarine canyon and part of the north Cabo Pulmo deep reef. In order to safely generate a 1-m lateral resolution multibeam bathymetry map in the nearshore high relief terrain, the mapping operations consisted of an initial short survey following the 100-m isobath followed by a series of short, incremental AUV missions located on the deep edge of the new AUV bathymetry. The MBARI Mini-ROV was used to explore the submarine canyon within the detailed map created by the MBARI AUV. The Mini-ROV is a 1.2-m-long, 350 kg, 1,500-m-depth-rated ROV designed and constructed by MBARI. It is controlled by six 600-watt thrusters and is equipped with a high-definition video camera and navigation sensors. This small ROV carries less accurate, lower cost navigation sensors than larger vehicles. We implemented new algorithms to localize combining Doppler velocity log sensor data and low-cost MEMS-based inertial sensor data with sporadic ultra-short baseline position measurements to provide a high accuracy position estimation. The navigation performance allowed us to colocate the ROV video imagery with the 1-m resolution bathymetric map of the submarine canyon. Upper Los Frailes Canyon is rugged and, aside from small sand pockets along the thalweg, largely bare of sediment. ROV video indicates the north wall is composed of granitic rock similar to outcrops on shore. Few fish or other animals are observed below 100 m depth, but considerable diversity exists along the canyon walls above 100 m depth. These observations are consistent with a pronounced oxygen minimum zone present below about 100 m depth.

  6. Epiphytic diatoms associated with red mangrove (Rhizophora mangle prop roots in Bahía Magdalena, Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    D.A Siqueiros Beltrones

    2006-06-01

    Full Text Available The first floristic inventory of benthic diatoms is provided for the Bahía Magdalena- Bahía Almejas lagoon system. Samplings were carried out during November of 1999. The oxydized samples were mounted permanently. Eighty six diatom taxa were identified, out of which 59 are new records for the Bahía Magdalena area, and 12 taxa are new for the Baja California peninsula. Taxa recorded previously as rare in other substrata are common or abundant on the epiphytic macroalgae of mangrove prop roots. Other species are mainly epipelic forms, while 24 are commonly found as tychoplankton in the area. Certain taxa appear to be characteristic of mangrove systems in general. Rev. Biol. Trop. 54(2: 287-297. Epub 2006 Jun 01.Se presenta el primer inventario florístico de diatomeas bénticas para el Sistema Lagunar Bahía Magdalena-Bahía Almejas. Se hicieron muestreos en noviembre de 1999. En las muestras oxidadas y montadas permanentemente, se identificaron 86 táxones, de los cuales 59 son nuevos registros para el área de Bahía Magdalena, y 12 son nuevos para la península de Baja California. Táxones previamente registrados como escasos en otros sustratos son comunes o abundantes sobre macroalgas epífitas de raíces primarias de mangle. Otras species son principalmente formas epipélicas, mientras que 24 son constituyentes comunes del ticoplancton del área. Ciertos táxones parecen ser característicos de sistemas de manglar en general.

  7. Seismicity, focal mechanisms, and stress distribution in the Tres Virgenes volcanic and geothermal region, Baja California Sur, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Wong, Victor; Munguia, Luis [Centro de Investigacion Cientifica y de Educacion Superior de Ensenada (Mexico)

    2006-01-15

    In October 1993 we carried out a seismic monitoring in the Tres Virgenes volcanic region in order to record the background seismicity associated with the volcanic structures, the geothermal field and the tectonic features of the area. Hypocenters for 257 microearthquakes were located in the volcanic edifices and along the northwest right-lateral, strike-slip La Virgen fault. Focal depths range from close to the Earth surface to about 8 km. Shallow depths occur mainly in the volcanic edifices. Deeper seismic events occurred outside the volcanic area. The duration magnitudes of the located microearthquakes range between 1 and 3. The Vp/Vs ratio and the low-Q values estimated suggest heterogeneous material properties in the volcanic structures mainly toward the El Azufre fault and the El Aguajito Caldera, where hydrothermal activity has been reported. The P- and T-axes of focal mechanisms for 90 microearthquakes suggest that the region is under N-S compression and E-W extension, in agreement with the regional tectonic stress field of the NW-SE right-lateral strike-slip transform fault system of the Gulf of California. [Spanish] En octubre de 1993 se llevo a cabo un monitoreo sismico en la region volcanica Las Tres Virgenes con el proposito de registrar la actividad sismica asociada a las estructuras volcanicas, al campo geotermico y a la tectonica local. Se localizaron 257 microsismos con hipocentros en los edificios volcanicos y a lo largo de la falla de rumbo, lateral derecha conocida como falla La Virgen. La profundidad focal de los sismos varia desde los muy cercanos a la superficie de la Tierra hasta los 8 km. Las profundidades someras ocurren principalmente en los edificios volcanicos. Los sismos mas profundos ocurren fuera del area volcanica. La magnitud de duracion de los microsismos localizados varia entre 1 y 3. La razon Vp/Vs y los valores bajos de Q que se estimaron en la zona sugieren un material con propiedades heterogeneas bajo las estructuras volcanicas, principalmente hacia la falla el Azufre y la caldera El Aguajito, donde se ha reportado la actividad hidrotermal. La distribucion de los ejes P y T de los mecanismos focales de 90 microtemblores sugieren que la region se encuentra bajo compresion en direccion N-S y extension en direccion E-O, en concordancia con el regimen de esfuerzo regional impuesto por el sistema de fallas transformadas, NO-SE, lateral derecho, del Golfo de California.

  8. Arsenic Concentration in the Surface Water of a Former Mining Area: The La Junta Creek, Baja California Sur, Mexico

    Science.gov (United States)

    Imaz Lamadrid, Miguel; Acosta Vargas, Baudilio

    2018-01-01

    The mining activity in the San Antonio-El Triunfo district, located in a mountainous region at 60 km southeast of La Paz, occured for more than 250 years and left behind severe contamination of soils and riverbed sediments which led to elevated concentrations of arsenic and other trace elements in the surface- and groundwater of the region. Although the main mining activity ended around 1911, contamination is still beeing distributed, especially from left behind tailings and mine waste piles. The contamination levels in the groundwater have been reported in several studies, but there is little information available on the surface water quality, and especially the temporal variation. In this study, we analyzed the surface water of the La Junta creek, in the southern part of the San Antonio-El Triunfo mining district. The working hypothesis was that by means of a spatial analysis of surface water and shallow groundwater, in combination with the temporal observation of the concentrations in runoff water, the effects of different sources of arsenic (natural geogene anomalies, due to historic mining activity, and hydrothermal related impact) in the La Junta creek can be recognized. This present study revealed that historic mining activity caused a mojor impact of arsenic but less contamination was observed than in the northern part of the district and elevated arsenic concentrations in stream water generally occurred during times of low streamflow. PMID:29498700

  9. Transformations of Mangrove Forests in Bahia Magdalena, Baja California Sur, Mexico: Two Decade Results Based on Landsat Imageries

    Science.gov (United States)

    Suresh Babu, S.; Abdul Rahaman, S.; Muthushankar, G.; Jonathan, M. P.

    2014-12-01

    Mangrove forests which thrive along the tropical and subtropical regions are the most productive ecosystems in the world with a wide range of ecological and economical services to mankind. With the rapid urbanization across the globe, these forests tend to be destroying at an alarming rate. The area of concern for this study, Bahia Magdalena is very important for the economy of the state as nearly 50% of the artisan fisheries are established in the mangrove zone. Henceforth this study is an attempt for a regional assessment and to accurately quantify the mangroves using LANDSAT imageries for over two decades in Bahia Magdalena, Baja California. Satellite imageries from the year 1986 through 2014 were analysed to assess the prolonged changes taking place in and around the mangrove reserve. Using the estimates of land use/cover for all the years, the spatio - temporal data was validated using ArcGIS software. The results revealed that the spatial extent of mangroves are decreasing until 2005 due to the developmental plans such as tourism, shrimp farming and establishment of industries in this part of the country. During the past 10 years (~ after 2005) there is no much change in the area extent of mangrove reserves due to afforestation and conservation efforts. Thus the unbiased dataset generated may be widely used for an improved understanding of the role of mangrove forests in the socio economic aspects, protection from natural disasters, identify possible areas for conservation, restoration and rehabilitation; and improve estimates of the amount of carbon stored in mangrove vegetation and the associated marine environment. Keywords: Mangroves, LANDSAT, Bahia Magdalena, México.

  10. Juvenile Justice in Mexico

    Directory of Open Access Journals (Sweden)

    Martha Frías Armenta

    2014-08-01

    Full Text Available The first tribunal in Mexico was established in the central state of San Luis Potosi in 1926. The Law Regarding Social Prevention and Juvenile Delinquency for the Federal District and Mexican territories was promulgated in 1928. In 2005, Article 18 of the Mexican Constitution was modified to establish a comprehensive system (“Sistema Integral de justicia” in Spanish of justice for juveniles between 12 and 18 years old who had committed a crime punishable under criminal law. Its objective was to guarantee juveniles all the due process rights established for adults, in addition to the special ones recognized for minors. The constitutional reform also provides a framework that includes special tribunals as well as alternative justice options for juveniles. With these reforms, institutionalization of minors was to be considered an extreme measure applicable only to felonies and to juveniles older than 14. In 2006, all states within the Mexican federation enacted the “Law of justice for adolescents”. This system, at both the federal and state levels, formalizes a new global paradigm with regard to the triangular relationship between children, the State and the Law. It recognizes that children are also bearers of the inherent human rights recognized for all individuals, instead of simply objects in need of protection. However, despite formally aligning Mexican juvenile justice law with the Convention on the Rights of the Child (CRC, issues of actual substantive rights remained and new ones have appeared. For example, juveniles younger than 14 who have not committed a felony are released from institutions without any rehabilitation or treatment options, and alternative forms of justice were included without evaluating their possibilities of application or their conditions for success. In addition, the economic status of most juvenile detainees continues to be one of the most important determining factors in the administration of justice

  11. Stark broadening of hydrogen (1961); Sur l'effet stark dans les plasmas d'hydrogene (1961)

    Energy Technology Data Exchange (ETDEWEB)

    Fidone, I [Association Euratom-CEA Cadarache, 13 - Saint-Paul-lez-Durance (France)

    1961-07-01

    The effect of electron impacts on the Stark broadening of hydrogen atoms has been considered using a Debye-Huckel potential instead of a cut-off limit for the integrals giving the shift and the half-width. A slight difference results which in a typical case is of the order of 12 - 15 per cent. The simple adiabatic impact approximation has been used. (author) [French] L'effet des chocs electroniques sur l'elargissement Stark des raies d'hydrogene est calcule avec le potentiel de Debye-Huckel au lieu de l'emploi du cut-off pour les integrales qui donnent le deplacement et l'elargissement de la raie. On obtient une faible difference qui, dans un cas typique, est de l'ordre de grandeur de 12 - 15 pour cent. L'approximation adiabatique a ete employee pour decrire les chocs. (auteur)

  12. ( Didelphis virginiana ) from Yucatan, Mexico

    African Journals Online (AJOL)

    Toxoplasma gondii is an obligate intracellular parasite recognized as a causal agent of toxoplasmosis; zoonotic disease endemic in many countries worldwide, including Mexico. Different species of animals participate in the wild cycle infection, including opossums of the species Didelphis virginiana. Thirteen D. virginiana ...

  13. Radioactive waste management in Mexico

    International Nuclear Information System (INIS)

    Paredes, L.; Reyes L, J.; Jimenez D, J.

    2000-01-01

    This paper describes the radioactive waste management in Mexico, particularly the activities that the National Institute of Nuclear Research (NINR) is undertaking in this field. Classification and annual generation of radioactive waste, together with practices and facilities relating to the management of radioactive waste are addressed. The respective national legal framework and policy are outlined. (author)

  14. Shell Trumpets from Western Mexico

    Directory of Open Access Journals (Sweden)

    Robert Novella

    1991-11-01

    Full Text Available Marine shells have been used as musical instruments in almost all parts of the world (Izikowitz 1935, including Mesoamerica, where large univalves, also called conch shells in the literature, had a utilitarian function as trumpets. Their use is well documented in most cultural areas of Mesoamerica, as in Western Mexico, through their various occurrences in archaeological contexts and museums collections.

  15. Pemex and Mexico's mixed emotions

    International Nuclear Information System (INIS)

    Dombey, D.

    1997-01-01

    Pemex, Mexico's state owned oil company, has long been a byword for overmanning, inefficiency, disregard for the environment and for having all the ills of state incorporation, with few of the benefits. Matters, however, are changing. Pemex wants to be normal. (author)

  16. Alternative Education Spaces in Mexico

    Science.gov (United States)

    Gray, Chloe

    2010-01-01

    This article explores the architecture of the Red de Innovacion y Aprendizaje (RIA), or Learning and Innovation Network, which is a group of education centres that provide access to computers, the Internet and quality education to low-income communities in Mexico. The RIA began in May 2009 when ten pilot centres were opened in four municipalities…

  17. Mexico: swapping crude for atoms

    International Nuclear Information System (INIS)

    Navarro, B.

    1982-01-01

    Mexico, considered the Saudi Arabia of the Western Hemisphere because of its proven and potential petroleum reserves, has surprised the world: it has embarked on the biggest nuclear-electric program in the Third World, only to postpone it days before scheduled approval of an international bidding (on which the atomic energy industry had pinned its hopes). A graph shows Mexican supplies of electricity by source with official projections to 1990. The point of entrance of the first nuclear reactor, originally scheduled for 1982, won't come onstream until 1983; and how nuclear-generated electricity grows close to 5% of the total in 1990. The big question is, will the future President of Mexico give the green light to the atomic megaproject. And if he does, how will Mexico deal with the serious logistics problems and grave ecological implications confronting the industry worldwide. In this issue, the author and Energy Detente touch on these questions and review the nuclear power status of Mexico, as well as addressing some of its global problems. Also presented in this issue is an update of the fuel price/tax series for the Western Hemisphere countries

  18. Village Dogs in Coastal Mexico

    NARCIS (Netherlands)

    Ruiz Izaguirre, Eliza; Hebinck, P.G.M.; Eilers, C.H.A.M.

    2018-01-01

    Village dogs are important for households in coastal Mexico, yet they are seen as out of place by etic stakeholders (public health and wildlife experts, and animal welfarists). Caregivers of village dogs are considered irresponsible, a view that is reinforced by Mexican policy. We describe two

  19. Structural Damage in Mexico City

    OpenAIRE

    Hall, John F.; Beck, James L.

    1986-01-01

    This paper describes the structural damage in Mexico City caused by the September 19, 1985 earthquake. Photographs which illustrate various features of structural behavior are included. One explanation is presented as to why buildings with fundamental periods of elastic vibration considerably below the predominant two‐second period of the ground motion were most vulnerable to damage.

  20. "Mexico in Transition." Curriculum Units.

    Science.gov (United States)

    Oregon Univ., Eugene. Foreign Language Resource Center.

    These curriculum units were developed in a National Endowment for the Humanities 1994 summer seminar "Mexico in Transition." The 23 lessons are written in Spanish. Lessons are entitled: (1) "La Migracion Mexicana Vista a Traves del Cuento 'Paso del Norte' de Juan Rulfo" (Jose Jorge Armendariz); (2) "Los Grupos Indigenas de…

  1. Establishing a binational student-run free-clinic in Tijuana, Mexico: a model for US-Mexico border states.

    Science.gov (United States)

    Ojeda, Victoria D; Eppstein, Amy; Lozada, Remedios; Vargas-Ojeda, Adriana C; Strathdee, Steffanie A; Goodman, David; Burgos, Jose L

    2014-06-01

    In 2011, a bi-national student-run free clinic for the underserved, known as "Health Frontiers in Tijuana" (HFiT), was created in Tijuana, Mexico. Students and faculty from one Mexican and one US medical school staff the clinic and attend patients on Saturdays. Students from both medical schools enroll in a didactic course during the quarter/semester that they attend the free clinic. The course addresses clinical, ethical, cultural, population-specific issues and the structure, financing and delivery of medical care in Mexico. The clinic implements an electronic medical record and is developing telemedicine for consulting on complex cases. Despite challenges related to sustaining adequate funding, this program may be replicated in other border communities.

  2. Effet du compost à base de Calotropis procera (Aiton) W.T. Aiton sur ...

    African Journals Online (AJOL)

    Objectifs: Une étude à base de compost de Calotropis procera a été menée afin de mesurer l'effet sur la production de l'arachide sur de sols pauvres. Méthodologie et résultats: L'essai a été conduit sur le site de Doyaba au niveau des zones marginales du Tchad avec la variété fleur 11 d'arachide (Arachis hypogaea L.) ...

  3. Effets du Cloud computing sur les relations inter-organisationnelles dans la supply chain en France

    OpenAIRE

    AGHHAVANI-SHAJARI, Benyamin

    2016-01-01

    National audience; Le cloud computing (CC) est en train de changer la façon dont les entreprises déploient et exploitent leur système d’information. 55% des entreprises françaises utilisent le Service Cloud type Software as a service (Saas). Les recherches se sont surtout focalisées sur la question de l'adoption du CC (ACC) dans une organisation ou encore sur les difficultés techniques et informatiques. À notre connaissance il existe peu de recherches portant sur l'ACC au niveau de la supply ...

  4. 9 CFR 93.427 - Cattle from Mexico.

    Science.gov (United States)

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Cattle from Mexico. 93.427 Section 93... CONVEYANCE AND SHIPPING CONTAINERS Ruminants Mexico 10 § 93.427 Cattle from Mexico. (a) Cattle and other ruminants imported from Mexico, except animals being transported in bond for immediate return to Mexico or...

  5. 7 CFR 319.8-13 - From Northwest Mexico.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 5 2010-01-01 2010-01-01 false From Northwest Mexico. 319.8-13 Section 319.8-13... for the Entry of Cotton and Covers from Mexico § 319.8-13 From Northwest Mexico. Contingent upon continued freedom of Northwest Mexico and of the West Coast of Mexico from infestations of the pink bollworm...

  6. Estimasi Model Seemingly Unrelated Regression (SUR dengan Metode Generalized Least Square (GLS

    Directory of Open Access Journals (Sweden)

    Ade Widyaningsih

    2015-04-01

    Full Text Available Regression analysis is a statistical tool that is used to determine the relationship between two or more quantitative variables so that one variable can be predicted from the other variables. A method that can used to obtain a good estimation in the regression analysis is ordinary least squares method. The least squares method is used to estimate the parameters of one or more regression but relationships among the errors in the response of other estimators are not allowed. One way to overcome this problem is Seemingly Unrelated Regression model (SUR in which parameters are estimated using Generalized Least Square (GLS. In this study, the author applies SUR model using GLS method on world gasoline demand data. The author obtains that SUR using GLS is better than OLS because SUR produce smaller errors than the OLS.

  7. Estimasi Model Seemingly Unrelated Regression (SUR dengan Metode Generalized Least Square (GLS

    Directory of Open Access Journals (Sweden)

    Ade Widyaningsih

    2014-06-01

    Full Text Available Regression analysis is a statistical tool that is used to determine the relationship between two or more quantitative variables so that one variable can be predicted from the other variables. A method that can used to obtain a good estimation in the regression analysis is ordinary least squares method. The least squares method is used to estimate the parameters of one or more regression but relationships among the errors in the response of other estimators are not allowed. One way to overcome this problem is Seemingly Unrelated Regression model (SUR in which parameters are estimated using Generalized Least Square (GLS. In this study, the author applies SUR model using GLS method on world gasoline demand data. The author obtains that SUR using GLS is better than OLS because SUR produce smaller errors than the OLS.

  8. Fronteras e identificaciones nacionales: diálogos desde el Cono Sur

    Directory of Open Access Journals (Sweden)

    Alejandro Grimson

    2014-06-01

    Full Text Available Grimson propone revisitar conceptos sociológicos como “identidades, fronteras o territorios” para adecuar un nuevo marco conceptual a la realidad del Cono Sur de América Latina.

  9. Efficacité de l'agent antagoniste Trichoderma harzianum sur ...

    African Journals Online (AJOL)

    Efficacité de l'agent antagoniste Trichoderma harzianum sur Fusarium oxysporum f. sp. lycopersiciagent pathogène de la tomate. LS Gnancadja, DHE Tonon, EMO Faton, KO Douro Kpindou, E Dannon, A Akoegninou ...

  10. Dans le labyrinthe de verre. La négociation sur l'effet de serre

    OpenAIRE

    Hourcade , Jean Charles

    2002-01-01

    National audience; En parcourant les étapes principales de la « négociation climat », on fait apparaître le jeu de miroirs qui se déroule entre Europe et États-Unis, dans un contexte historique caractérisé par les débats sur la mondialisation, la volonté de leadership de l'Union européenne sur ce thème, la montée aux États-Unis d'inquiétudes sur le maintien de leur suprématie.On montre aussi pourquoi ce jeu, après avoir masqué des possibilités réelles de compromis, a débouché en 2000 sur l'éc...

  11. Bibliography on plutonium and its compounds; Bibliographie sur le plutonium et ses composes

    Energy Technology Data Exchange (ETDEWEB)

    Dirian, J; Choquet, J [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1958-07-01

    Collection of bibliographical references on plutonium and its principal compounds from 1942 to end of 1957. (author) [French] Compilation de references bibliographiques sur le plutonium et ses principaux composes de 1942 a fin 1957. (auteur)

  12. Compétences, gouvernance et nanotechnologies : pleins feux sur l ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ... pour prendre part au débat et relever les défis que posent les nanotechnologies. En plus ... de son Dialogue mondial sur la nanotechnologie et les populations pauvres (Global ... Multi level governance (MLG) framework for nanotechnology.

  13. Pärt, Arvo: "Summa". Collage sur BACH. Fratres / Patric Wiklacz

    Index Scriptorium Estoniae

    Wiklacz, Patric

    1997-01-01

    Uuest heliplaadist "Pärt, Arvo: "Summa". Collage sur BACH. Fratres. Cantus in Memoriam Benjamin Britten. Summa. Festina Lente. Tabula rasa. Tapiola Sinfonietta / Jean-Jacques Kantorow". BIS-CD-834. 62:30 DDD

  14. Des filets à nuages sur la crête d'El Tofo | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    adaptation aux changements climatiques que le CRDI subventionne. Entretien avec…propose des entrevues vidéos avec des chercheurs participant à des projets portant sur l'adaptation aux changements climati.

  15. 76 FR 64248 - Gulf of Mexico Reef Fish Fishery; Closure of the 2011 Gulf of Mexico Commercial Sector for...

    Science.gov (United States)

    2011-10-18

    .... 040205043-4043-01] RIN 0648-XA766 Gulf of Mexico Reef Fish Fishery; Closure of the 2011 Gulf of Mexico... the commercial sector for greater amberjack in the exclusive economic zone (EEZ) of the Gulf of Mexico... Reef Fish Resources of the Gulf of Mexico (FMP). The FMP was prepared by the Gulf of Mexico Fishery...

  16. Mexico and the CTBT; Mexico y el CTBT

    Energy Technology Data Exchange (ETDEWEB)

    Aguirre G, J.; Martinez L, J.; Ruiz E, L. J.; Aragon M, I. B., E-mail: jaguirre@cnsns.gob.mx [Comision Nacional de Seguridad Nuclear y Salvaguardias, Dr. Barragan 779, Col. Narvarte, 03020 Mexico D. F. (Mexico)

    2013-10-15

    The Comprehensive Nuclear Test-Ban-Treaty (CTBT) is a treaty that prohibits all the nuclear explosions by anybody and in any place, either on the terrestrial surface, in the atmosphere, under the sea or underground. From the adoption of this Treaty by the United Nations, Mexico has had interest for its entrance in vigor, as integral part to assure the international peace. For this reason, our country signed the Treaty since it was open in September 24, 1996 and three years later ratified it, due to Mexico is part of the group of necessary countries for their entrance in vigor. During 13 years, the country has been committed and helped to the installation of monitoring stations, actions that allow the strengthening of the International System of Surveillance. The purpose of this work is to divulge the Treaty,its technologies and benefits; and also to diffuse the works realized by Mexico regarding the radionuclides monitoring station and noble gases both certified ones for the CTBT. Besides the radionuclides technology, Mexico has taken charge of the installation and operation of the seismic stations and hydro-acoustics that have been certified too. The radionuclides station Rn-44 located in Guerrero Negro, BCS has two technologies, an automated sampler of suspended particles in air brand Cinderella/ARAME and a noble gases system Sauna used for the particles detection of radioactive material gamma emitting and Xenon radioisotopes product of nuclear assays. Both technologies are transmitting data in real time to the International Center of Data. These technologies are shown in this work. (Author)

  17. Sur les lherzolites et ophites des Pyrénées

    NARCIS (Netherlands)

    Zwart, H.J.

    1953-01-01

    Depuis longtemps on trouve dans la littérature sur la géologie des Pyrénées des discussions sur les lherzolites et les ophites, concernant leur origine, leur âge et leur mode de formation. En général ces discussions ont rendu difficile l'éclaircissement de ce problème et un résumé de toute la

  18. Effets du travail du sol sur le comportement chimique et biologique ...

    African Journals Online (AJOL)

    SARAH

    31 juil. 2017 ... RESUME. Objectif : L'objectif de cette étude est de comparer les effets de six techniques culturales de mise en place du blé tendre sur certaines propriétés chimiques et biologiques du sol et les conséquences sur le rendement grain et ses composantes dans la région «non chernozem» en 7ème années ...

  19. Produire des données probantes sur l'agriculture sexospécifique ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le secteur agricole joue un rôle clé dans le tissu social et l'économie de ... il est important de comprendre la façon dont la dynamique sexospécifique influe sur ... aux ressources et le contrôle de celles-ci; l'emploi du temps et la main-d'œuvre; ... IWRA/CRDI sur les changements climatiques et la gestion adaptive de l'eau.

  20. L'urbanisation sur le plateau d'allada au sud-Benin, agent des ...

    African Journals Online (AJOL)

    La méthodologie adoptée pour mener à bien cette étude est basée d'une part, sur la revue documentaire et d'autre part, sur les enquêtes de terrain menées dans toutes les communes du département de l'Atlantique. La recherche documentaire a permis de cerner les contours de l'urbanisation et d'évaluer son ampleur ...

  1. Effets du stress salin sur la germination des graines de Gossypium ...

    African Journals Online (AJOL)

    SARAH

    31 août 2014 ... herbeuses et vives tandis que 40 % des graines ont germé sur tanne arbustive en milieu réel. Conclusion et application: l'objectif général de cette étude menée en milieu contrôlé (application des doses de sel) et en milieu réel (tannes) était de montrer les effets du stress salin sur la germination des graines.

  2. L'incidence des pesticides sur les producteurs de pommes de terre ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    27 janv. 2011 ... De 1990 à 1993, lui et Charles Crissman du Centre international de la pomme de terre (CIP) en Équateur ont participé à une étude appelée Tradeoffs qui portait sur les effets des pesticides sur la santé, l'environnement et la productivité. Tous deux sont chargés de la direction des recherches du projet ...

  3. 14 Oxydation du phenol sur un catalyseur à base de Fer supporté ...

    African Journals Online (AJOL)

    AKA BOKO

    Oxydation du phenol sur un catalyseur à base de Fer supporté sur une argile marocaine. Noura LAHBABI1*, Zakia RAIS2, M. HAJJAJI 3 et S. KACIM3. 1 Laboratoire d'ingénierie des matériaux organométalliques et moléculaire. Faculté des. Sciences Dhar El Mehrez, Fès, Maroc. 2 Laboratoire d'analyses physico-chimiques ...

  4. Turismo en Segovia sur. Análisis y propuestas de mejora

    OpenAIRE

    Herranz Marcos, María

    2015-01-01

    Este trabajo hace un análisis sobre el turismo rural y sostenible. El cual se basa en el territorio de Segovia sur. Segovia sur tiene un gran potencial turístico, que en algunas zonas es menos conocido. Por ello la creación de una serie de propuestas (senderismo, cicloturismo) que de forma sostenible potencien el desarrollo del turismo en esa zona. Grado en Turismo

  5. Impact de la restructuration de la taxe d'accise sur le tabac aux ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Aux Philippines, le taux de tabagisme est élevé et les taxes sur les produits du tabac, peu élevées. La meilleure façon de redresser la situation consiste à adopter des lois qui aug- mentent considérablement les taxes. Une loi restructurant les taxes sur les produits du tabac, qui comporte une forte hausse de la taxe d'accise ...

  6. Synthèse de la recherche sur les moyens de subsistance pouvant ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Synthèse de la recherche sur les moyens de subsistance pouvant remplacer la culture du tabac. Dans l'espoir de faire obstacle aux politiques visant à réduire la demande de produits du tabac, les compagnies de tabac font valoir que ces politiques auront des répercussions négatives sur l'emploi et l'économie des pays ...

  7. Influence du système de logement sur quelques performances ...

    African Journals Online (AJOL)

    Les effets de deux systèmes de logement (batterie de cages et sol sur litière) sur les performances zootechniques et économiques des poules pondeuses ont été évalués en zone tropicale humide, au sud du Benin. Un total de 180 poules pondeuses (Isa Brown) de 26 semaines d'âge était réparti en deux groupes de 108 et ...

  8. Incidence des prix et des taxes sur la consommation de produits du ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Incidence des prix et des taxes sur la consommation de produits du tabac en Argentine, en Bolivie et au Chili. Partout en Amérique du Sud, les adultes et les enfants font une grande consommation de tabac. Un nouveau projet de recherche se penchera sur les avantages et les limites des stratégies de fixation des prix et de ...

  9. Georeferenced Population Datasets of Mexico (GEO-MEX): Urban Place GIS Coverage of Mexico

    Data.gov (United States)

    National Aeronautics and Space Administration — The Urban Place GIS Coverage of Mexico is a vector based point Geographic Information System (GIS) coverage of 696 urban places in Mexico. Each Urban Place is...

  10. Quelques considérations sur la grippe aviaire

    Directory of Open Access Journals (Sweden)

    Michel Maffesoli

    2006-06-01

    Full Text Available Dans le totalitarisme doux étendant son voile sirupeux sur des masses inquiètes, l’on sait que les divers technocrates assoient leur pouvoir en entretenant la crainte. Ce qui n’est pas très compliqué, tant la peur de l’ombre, la peur de son ombre travaille tout un chacun. Si l’on doit caractériser l’époque, c’est bien le terme de lâcheté généralisée qui vient, immédiatement, à l’esprit. L’on sait que le virus de la grippe aviaire ne peut infecter l’homme que par contact direct et prolongé. Par exemple, boire l’eau d’un marais infecté de fiente d’oiseaux contaminés ou forniquer avec une poule atteinte de ce mal. De même, le danger de pandémie ne pourrait advenir que s’il y avait conjonction avec la grippe humaine. Ainsi, les virologues considèrent qu’il faudrait plusieurs centaines de personnes infectées par la grippe aviaire, dans un milieu lui-même en pleine épidémie de grippe humaine pour qu’il y ait un danger réel d’infection généralisée. Comme on le voit le risque est grand! Mais là n’est pas le problème. Il suffit, pour nos technocrates, que l’imaginaire de l’insécurité soit là. Ils y trouvent une raison d’être. Ils peuvent, savamment, jouer les utilités. On sait que de tous temps, c’est en misant sur une angoisse diffuse que les divers pouvoirs ont assis leur légitimité. En fait ce qui est à prendre au sérieux, ce sont les hystéries collectives. La chute spectaculaire de la consommation de volailles de toutes sortes en témoigne. Souvenons-nous aussi que n’est pas loin le temps où la même suspicion planait sur la viande bovine! Trêve de plaisanterie! Actualisons l’apologue. Ainsi l’émotion provoquée par le «double scandale» qui frapperait le C.N.R.S ne manque pas de susciter inquiétudes et interrogations. En terme d’épidémiologie bien entendu. Inquiétudes quant à la santé mentale du «milieu» sociologique capable de pétionner en m

  11. Los rubios. Recherche sur les différents états de la mémoire et sur la reconstruction d’une identité

    Directory of Open Access Journals (Sweden)

    Marta Mariasole Raimondi

    2010-11-01

    Full Text Available Los rubios, Argentina, 2003. Réalisation : Albertina Carri. Interprètes : Analìa Couceyro, Albertina Carri. Durée : 89 min. Noir & blanc et couleurs. Langue espagnole. Introduction Mélange de souvenirs, d’anecdotes, de fragments et d’imagination. Los rubios [trad. Les Blonds] ne se présente pas comme un film de dénonciation ou comme un documentaire historique sur les detenidos-desparecidos. Dans ce film, Albertina Carri propose plutôt sa vision personnelle sur la disparition de ses parents. L...

  12. Simultaneous analysis with respect to time and energy of a linear electron accelerator beam; Analyse simultanee en temps et en energie du faisceau d'un accelerateur lineaire d'electrons

    Energy Technology Data Exchange (ETDEWEB)

    Garganne, P [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1965-07-01

    A system is described for displaying on an oscilloscope screen the energy spectrum of the electrons located in time at a particular moment of the total electron pulse accelerated by a linac. The shaping transistor circuitry is particularly described. Some examples are given concerning the experimental results observed with such a system at the Saclay Linac. (author) [French] On decrit un systeme d'affichage sur un ecran d'oscilloscope, du spectre en energie des electrons sortant de l'accelerateur a un instant variable dans l'impulsion totale acceleree, insistant sur les circuits a transistors de mise en forme des impulsions. On donne quelques exemples de resultats obtenus sur l'accelerateur lineaire de Saclay. (auteur)

  13. Design and construction of electronic components for a ''Novillo'' Tokamak

    International Nuclear Information System (INIS)

    Lopez C, R.

    1986-07-01

    The goal of this effort was to design, construct and make functional the electronic components for a ''Novillo'' Tokamak currently being experimentally investigated at the National Institute of Nuclear Research in Mexico. The problem was to develop programmable electronic switches capable of discharging high voltage kilowatt energies stored in capacitator banks onto the coils of the Tokamak. (author)

  14. La mise en patrimoine sur ONF.ca

    Directory of Open Access Journals (Sweden)

    Michèle Garneau

    2015-05-01

    Full Text Available Résumé Ce texte propose une approche à la fois descriptive, analytique et critique de la très active production patrimoniale actuellement en cours sur ONF.ca. En se donnant comme mission de rendre accessible son patrimoine audiovisuel, l’Office se soucie d’en orienter la réception, de proposer aux internautes l’histoire de son action audiovisuelle depuis sa fondation en 1939. Par le relevé d’un certain nombre de valeurs exhibées (authenticité, représentativité, renommée et proximité, et de registres privilégiés (dont celui de la commémoration, l’auteur tente de circonscrire une axiologie du patrimoine sur ONF.ca. Dans sa seconde partie, le texte se consacre à la question de l’articulation (et de l’écart entre mémoire patrimoniale et mémoires particulières (des films afin de mieux cerner les contours politiques et les enjeux idéologiques de l’encadrement discursif des collections. Abstract This article offers a descriptive, analytical and critical approach to the very active production of audiovisual heritage currently underway at NFB.ca. Designed to make the National Film Board (NFB’s audiovisual heritage more accessible, the website carefully guides its users through the history-memory of audiovisual production at the Film Board from its foundation in 1939 through to the present. By analyzing how the website showcases its films, endorsing specific values (authenticity, representativeness, recognition and proximity and privileging certain registers (such as commemoration, the article first attempts to define an axiology of heritage in NFB.ca. The article then focuses on questions of the articulation of (and the variation between history-memory and particular memories (of films in order to better outline the political contours and ideological stakes of the discursive framework of the NFB’s collections.

  15. Manufacturing real wages in Mexico

    Directory of Open Access Journals (Sweden)

    López V Antonia

    2006-01-01

    Full Text Available In this paper we analyse the recent evolution and determinants of real wages in Mexico?s manufacturing sector, using theories based on the assumption of imperfect competition both in the product and in the labour markets, especially wage-bargain theory, insider-outsider and mark-up models. We show evidence that the Mexican labour market does not behave as a traditional competitive market. The proposed explanation for this fact is that some workers benefit from advantages when compared with others, so that they can get a greater share of the proceedings of the productive process. Also, we find that changes in the degree of competition in the market for output influence the behaviour of real wages.

  16. History of nonnative Monk Parakeets in Mexico.

    Science.gov (United States)

    Hobson, Elizabeth A; Smith-Vidaurre, Grace; Salinas-Melgoza, Alejandro

    2017-01-01

    Nonnative Monk Parakeets have been reported in increasing numbers across many cities in Mexico, and were formally classified as an invasive species in Mexico in late 2016. However, there has not been a large-scale attempt to determine how international pet trade and national and international governmental regulations have played a part in colonization, and when the species appeared in different areas. We describe the changes in regulations that led the international pet trade market to shift to Mexico, then used international trade data to determine how many parakeets were commercially imported each year and where those individuals originated. We also quantified the recent increases in Monk Parakeet (Myiopsitta monachus) sightings in Mexico in both the scientific literature and in citizen science reports. We describe the timeline of increased reports to understand the history of nonnative Monk Parakeets in Mexico. As in other areas where the species has colonized, the main mode of transport is through the international pet trade. Over half a million Monk Parakeets were commercially imported to Mexico during 2000-2015, with the majority of importation (90%) occurring in 2008-2014, and almost all (98%) were imported from Uruguay. The earliest record of a free-flying Monk Parakeet was observed during 1994-1995 in Mexico City, but sightings of the parakeets did not become geographically widespread in either the scientific literature or citizen science databases until 2012-2015. By 2015, parakeets had been reported in 97 cities in Mexico. Mexico City has consistently seen steep increases in reporting since this species was first reported in Mexico. Here we find that both national and international legal regulations and health concerns drove a rise and fall in Monk Parakeet pet trade importations, shortly followed by widespread sightings of feral parakeets across Mexico. Further monitoring of introduced Monk Parakeet populations in Mexico is needed to understand the

  17. Significance of Hemispheric Security for Mexico

    Science.gov (United States)

    2003-04-07

    La Seguridad Internacional, la Nueva Geopolitica Continental y Mexico ,” Seminario Internacional sobre Misiones de Paz, Seguridad y Defensa, Rio de...USAWC STRATEGY RESEARCH PROJECT SIGNIFICANCE OF HEMISPHERIC SECURITY FOR MEXICO by LTC Enrique Garcia Jaramillo Cavalry, Mexican Army COL Joseph R...xx-xx-2002 to xx-xx-2003 4. TITLE AND SUBTITLE Significance of Hemispheric Security for Mexico Unclassified 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c

  18. Binational Teacher Development: Teacher Ambassador Exchange Program, New Mexico, USA and Nuevo Leon, Mexico.

    Science.gov (United States)

    Habermann, Mary Jean

    The report describes the rationale for and history of an exchange program for Nuevo Leon (Mexico) and New Mexico bilingual education teachers. The program evolved from the need to help Spanish-speaking students maintain their own language and culture while in the United States. New Mexico's state policy concerning language-minority children and…

  19. Elimination of Onchocerciasis from Mexico

    Science.gov (United States)

    Rodríguez-Pérez, Mario A.; Fernández-Santos, Nadia A.; Orozco-Algarra, María E.; Rodríguez-Atanacio, José A.; Domínguez-Vázquez, Alfredo; Rodríguez-Morales, Kristel B.; Real-Najarro, Olga; Prado-Velasco, Francisco G.; Cupp, Eddie W.; Richards, Frank O.; Hassan, Hassan K.; González-Roldán, Jesús F.; Kuri-Morales, Pablo A.; Unnasch, Thomas R.

    2015-01-01

    Background Mexico is one of the six countries formerly endemic for onchocerciasis in Latin America. Transmission has been interrupted in the three endemic foci of that country and mass drug distribution has ceased. Three years after mass drug distribution ended, post-treatment surveillance (PTS) surveys were undertaken which employed entomological indicators to check for transmission recrudescence. Methodology/Principal findings In-depth entomologic assessments were performed in 18 communities in the three endemic foci of Mexico. None of the 108,212 Simulium ochraceum s.l. collected from the three foci were found to contain parasite DNA when tested by polymerase chain reaction-enzyme-linked immunosorbent assay (PCR-ELISA), resulting in a maximum upper bound of the 95% confidence interval (95%-ULCI) of the infective rate in the vectors of 0.035/2,000 flies examined. This is an order of magnitude below the threshold of a 95%-ULCI of less than one infective fly per 2,000 flies tested, the current entomological criterion for interruption of transmission developed by the international community. The point estimate of seasonal transmission potential (STP) was zero, and the upper bound of the 95% confidence interval for the STP ranged from 1.2 to 1.7 L3/person/season in the different foci. This value is below all previous estimates for the minimum transmission potential required to maintain the parasite population. Conclusions/Significance The results from the in-depth entomological post treatment surveillance surveys strongly suggest that transmission has not resumed in the three foci of Mexico during the three years since the last distribution of ivermectin occurred; it was concluded that transmission remains undetectable without intervention, and Onchocerca volvulus has been eliminated from Mexico. PMID:26161558

  20. The outer Gulf of Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Henery, D. [Shell Internationale Petroleum Maatschappij BV, Den Haag (Netherlands)

    1996-12-31

    This paper deals with the offshore activity in the Gulf of Mexico. Up to the end of 1995 there have been close to 300 exploratory wells drilled in water depths beyond 450 metres, and over 50 development wells. In addition approximately 1.500 leases have been awarded in the deep water. Themes discussed are deep water discoveries, average well rates, and key learnings points

  1. Elimination of Onchocerciasis from Mexico.

    Directory of Open Access Journals (Sweden)

    Mario A Rodríguez-Pérez

    Full Text Available Mexico is one of the six countries formerly endemic for onchocerciasis in Latin America. Transmission has been interrupted in the three endemic foci of that country and mass drug distribution has ceased. Three years after mass drug distribution ended, post-treatment surveillance (PTS surveys were undertaken which employed entomological indicators to check for transmission recrudescence.In-depth entomologic assessments were performed in 18 communities in the three endemic foci of Mexico. None of the 108,212 Simulium ochraceum s.l. collected from the three foci were found to contain parasite DNA when tested by polymerase chain reaction-enzyme-linked immunosorbent assay (PCR-ELISA, resulting in a maximum upper bound of the 95% confidence interval (95%-ULCI of the infective rate in the vectors of 0.035/2,000 flies examined. This is an order of magnitude below the threshold of a 95%-ULCI of less than one infective fly per 2,000 flies tested, the current entomological criterion for interruption of transmission developed by the international community. The point estimate of seasonal transmission potential (STP was zero, and the upper bound of the 95% confidence interval for the STP ranged from 1.2 to 1.7 L3/person/season in the different foci. This value is below all previous estimates for the minimum transmission potential required to maintain the parasite population.The results from the in-depth entomological post treatment surveillance surveys strongly suggest that transmission has not resumed in the three foci of Mexico during the three years since the last distribution of ivermectin occurred; it was concluded that transmission remains undetectable without intervention, and Onchocerca volvulus has been eliminated from Mexico.

  2. Electronic technology

    International Nuclear Information System (INIS)

    Kim, Jin Su

    2010-07-01

    This book is composed of five chapters, which introduces electronic technology about understanding of electronic, electronic component, radio, electronic application, communication technology, semiconductor on its basic, free electron and hole, intrinsic semiconductor and semiconductor element, Diode such as PN junction diode, characteristic of junction diode, rectifier circuit and smoothing circuit, transistor on structure of transistor, characteristic of transistor and common emitter circuit, electronic application about electronic equipment, communication technology and education, robot technology and high electronic technology.

  3. Present status of corn grain disinfestation by irradiation in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Adem, E; Uribe, R M [Universidad Nacional Autonoma de Mexico, Mexico City. Inst. de Fisica; Watters, F L [Department of Agriculture, Winnipeg, Manitoba (Canada). Research Station; Bourges, H [Instituto Nacional de la Nutricion, Mexico City

    1981-01-01

    Progress in the use of ionizing radiation for the disinfestation of grain in Mexico is reviewed. Main topics described in the paper concern determination of optimum dose for disinfestation, comparison of Co-60 gamma rays and accelerated electrons for suppressing infestation, susceptibility of different strains of insects, dose rate effects on survival of different insect species, survival of progeny of irradiated insects, germinative tests, and effect of radiation on the nutrient content of corn. The technical and economical aspects of irradiation disinfestation are mentioned.

  4. Early radioisotope uses in Mexico

    International Nuclear Information System (INIS)

    Segovia, N.; Tejera, A.; Bulbulian, S.; Palma, F.

    1991-10-01

    Mexico is traditionally a mining country and the first information about the presence of uranium is related to mine exploitation. Around 1945 when uranium became economically important, a rumor had spread that large amounts of black ceramics from Oaxaca were being purchased and sent abroad because of its assumed high uranium content. It was only in 1949 when minerals containing thorium and uranium were declared by law as 'National Reserves'. In those years a radium emanation plant was installed at the 'Hospital General' in Mexico City with the main purpose of carrying out radon seed implantation in tumors. In the fifties a radium dial painting facility was operating in the city of Toluca some 70 km from Mexico City. In 1955, when the National Commission of Nuclear Energy (CNEN) was founded by a government decree, two main activities were in sight: a training program on 'Radioisotope Techniques and Nuclear Instrumentation' and the creation of specialized laboratories. In this paper a general description of these events and undertakings spanning the decades 1940 to 1970 is given. (Author)

  5. Early radioisotope uses in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Segovia, N; Tejera, A; Bulbulian, S; Palma, F

    1991-10-15

    Mexico is traditionally a mining country and the first information about the presence of uranium is related to mine exploitation. Around 1945 when uranium became economically important, a rumor had spread that large amounts of black ceramics from Oaxaca were being purchased and sent abroad because of its assumed high uranium content. It was only in 1949 when minerals containing thorium and uranium were declared by law as 'National Reserves'. In those years a radium emanation plant was installed at the 'Hospital General' in Mexico City with the main purpose of carrying out radon seed implantation in tumors. In the fifties a radium dial painting facility was operating in the city of Toluca some 70 km from Mexico City. In 1955, when the National Commission of Nuclear Energy (CNEN) was founded by a government decree, two main activities were in sight: a training program on 'Radioisotope Techniques and Nuclear Instrumentation' and the creation of specialized laboratories. In this paper a general description of these events and undertakings spanning the decades 1940 to 1970 is given. (Author)

  6. Yes… Mexico is a racist country

    DEFF Research Database (Denmark)

    Carrales, Juan Carlos Finck

    2017-01-01

    According to recent official statistics, in Mexico there is a relation between people’s privileges and their skin color: The lighter, the more privilege. However, social exclusion by racist practices in Mexico has been common practically since its Spanish conquest between 1519 and 1521, in which...... privileges where absorbed and monopolized by European settlers in Mexico (Spanish people: peninsulares) and their descendants (creole: criollos). As a consequence, currently in Mexico, the color of skin affects people’s economic and political privileges and powers in individual and social levels related...

  7. The Electron

    Energy Technology Data Exchange (ETDEWEB)

    Thomson, George

    1972-01-01

    Electrons are elementary particles of atoms that revolve around and outside the nucleus and have a negative charge. This booklet discusses how electrons relate to electricity, some applications of electrons, electrons as waves, electrons in atoms and solids, the electron microscope, among other things.

  8. Hard electronics; Hard electronics

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    Hard material technologies were surveyed to establish the hard electronic technology which offers superior characteristics under hard operational or environmental conditions as compared with conventional Si devices. The following technologies were separately surveyed: (1) The device and integration technologies of wide gap hard semiconductors such as SiC, diamond and nitride, (2) The technology of hard semiconductor devices for vacuum micro- electronics technology, and (3) The technology of hard new material devices for oxides. The formation technology of oxide thin films made remarkable progress after discovery of oxide superconductor materials, resulting in development of an atomic layer growth method and mist deposition method. This leading research is expected to solve such issues difficult to be easily realized by current Si technology as high-power, high-frequency and low-loss devices in power electronics, high temperature-proof and radiation-proof devices in ultimate electronics, and high-speed and dense- integrated devices in information electronics. 432 refs., 136 figs., 15 tabs.

  9. Technological innovations in the horticultural sector in northwestern Mexico: adoption speed and diffusion networks analysis

    Directory of Open Access Journals (Sweden)

    Belem Dolores Avendaño-Ruiz

    2017-09-01

    Full Text Available The article focuses on the identification of innovation adoption and diffusion processes in the export horticultural sector in northwestern Mexico, and the differences identified taking into account the type of producer depending on the production size. The results of the adoption speed index suggests that large producers are distinguished as being early adopters and leaders in innovation adoption in this activity; but as long as there is a technological gap between small and large producers, that is increased even more by economical limita-tions, these will be identified as late adopters for this activity, supported by public programs for its adoption. The study was conducted in four entities of northwestern Mexico, Baja California, Baja California Sur, Sonora and Sinaloa, that in average contribute with 17 % of the national horticultural production. The international market is a strong promotor in innovation adoption, particularly in those related to food safety standards that are adopted by 84 % of the producers. The network analysis highlights the role of union organizations as technological innovation diffusors, e.g. the Confederation of Agricultural Associations of the Sinaloa State, and the Local Agricultural Association of horticulture, Fruits and Legumes of Hermosillo in Sonora.

  10. Periodismo ambiental en Canal Sur Televisión

    Directory of Open Access Journals (Sweden)

    Lic. Miguel Montaño Montaño

    1999-01-01

    Full Text Available El autor estudia el origen histórico del periodismo ambiental, la evolución en España y Andalucía y su aparición en Canal Sur TV Realiza un análisis sobre la información medioambiental, especialidad del periodismo que en la década de los noventa despierta nuevamente gran interés entre el público. La televisión autonómica ha dedicado, desde su creación numerosos programas sobre el medio ambiente. Actualmente sus Servicios Informativos tienen la sección Medio Ambiente. De la importancia que se concede a este tipo de información es un buen ejemplo el programa «Tierra y Mar», que incorpora progresivamente noticias medioambientales, referidas a la educación ambiental, el mantenimiento y recuperación de la biodiversidad y la presentación de modelos de conducta respetuosos.

  11. Effets de la formation sur la violence conjugale

    Science.gov (United States)

    Zaher, Eman; Keogh, Kelly; Ratnapalan, Savithiri

    2014-01-01

    Résumé Objectif Décrire et évaluer l’efficacité de la formation concernant la violence conjugale pour améliorer les connaissances et permettre la reconnaissance et la prise en charge par les médecins des femmes victimes de violence. Sources des données On a fait une recension dans la base de données des révisions systématiques de Cochrane, MEDLINE, PubMed, PsycINFO, ERIC et EMBASE pour trouver des articles publiés entre le 1e janvier 2000 et le 1e novembre 2012. Des recherches manuelles ont complété cette recension pour cerner des articles pertinents à l’aide d’une stratégie de recherche combinant des textes, mots et expressions MeSH. Sélection des études On a choisi des études randomisées contrôlées qui portaient sur des interventions éducatives à l’intention des médecins et fournissaient des données sur les effets des interventions. Synthèse On a inclus 9 études randomisées contrôlées qui décrivaient différentes approches pédagogiques et diverses mesures des résultats. Trois études examinaient les effets d’interventions éducatives pour des médecins en formation postdoctorale et ont constaté une augmentation des connaissances, mais il n’y a eu aucun changement dans le comportement en ce qui a trait à l’identification des victimes de violence conjugale. Six études portaient sur des interventions éducatives pour des médecins en pratique active. Trois d’entre elles utilisaient une approche à multiples facettes pour les médecins, qui combinait une formation ainsi que des interventions de soutien de la part du système pour changer les comportements des médecins, comme une sensibilisation générale accrue à la violence conjugale au moyen de brochures et d’affiches, des aide-mémoire pour rappeler aux médecins comment identifier les victimes, des moyens pour faciliter l’accès des médecins à des services de soutien pour les victimes, la réalisation d’audits et la fourniture de rétroaction. Les

  12. Cultura cabocla en el sur de Brasil un abordaje preliminar

    Directory of Open Access Journals (Sweden)

    Pedro Martins

    2003-12-01

    Full Text Available This text is a research report concerning the cabocla (mestizo population of southern Brazil, focusing on cultural aspects, seen here as a distinguishing system. This population is studied in terms of the migratory process that begins with their expulsion from the countryside, their adaptation to the small towns, passing through the periphery of the large cities and finally returning to the countryside. The article attempts to understand their musical practices, the technology that they have appropriated and their religiosity, all of which have been, symbolically and materially, reconstructed in their complexity.//Este texto es un reporte de la investigación sobre la población cabocla en el sur de Brasil, centrado en los aspectos culturales vistos como un sistema distintivo. Esta población es estudiada en los términos de un proceso migratorio que empieza con su expulsión del campo, su adaptación a pueblos pequeños, pasando por la periferia de las grandes ciudades y finalmente, retornando al campo. El artículo busca entender las prácticas musicales, la tecnología que apropiaron y sus prácticas religiosas, aspectos todos que han sido simbólica y materialmente reconstruidos en su complejidad.

  13. Effet sur la compétitivité des réglementations relatives à la gestion des effluents

    DEFF Research Database (Denmark)

    Andersen, Mikael Skou

    2004-01-01

    Grâce à un regard approfondi sur le secteur laitier dans les pays de l'OCDE, cette étude permet de mieux analyser l'impact des subventions à l'agriculture et des politiques de l'environnement sur l'environnement et sur la compétitivité internationale des produits laitiers. Ce chapitre étudie les ...

  14. Perception du risque et vulnérabilité des milieux humides sur la côte ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ils repéreront et évalueront les facteurs de stress associés aux changements climatiques pour ensuite analyser les facteurs qui influent sur la gestion des milieux humides et sur la perception des risques au sein des collectivités locales. Cette analyse débouchera sur l'élaboration de lignes directrices pour encourager les ...

  15. The Sur7 Protein Regulates Plasma Membrane Organization and Prevents Intracellular Cell Wall Growth in Candida albicans

    OpenAIRE

    Alvarez, Francisco J.; Douglas, Lois M.; Rosebrock, Adam; Konopka, James B.

    2008-01-01

    The Candida albicans plasma membrane plays important roles in cell growth and as a target for antifungal drugs. Analysis of Ca-Sur7 showed that this four transmembrane domain protein localized to stable punctate patches, similar to the plasma membrane subdomains known as eisosomes or MCC that were discovered in S. cerevisiae. The localization of Ca-Sur7 depended on sphingolipid synthesis. In contrast to S. cerevisiae, a C. albicans sur7Δ mutant displayed defects in endocytosis and morphogenes...

  16. Electron radiography

    Science.gov (United States)

    Merrill, Frank E.; Morris, Christopher

    2005-05-17

    A system capable of performing radiography using a beam of electrons. Diffuser means receive a beam of electrons and diffuse the electrons before they enter first matching quadrupoles where the diffused electrons are focused prior to the diffused electrons entering an object. First imaging quadrupoles receive the focused diffused electrons after the focused diffused electrons have been scattered by the object for focusing the scattered electrons. Collimator means receive the scattered electrons and remove scattered electrons that have scattered to large angles. Second imaging quadrupoles receive the collimated scattered electrons and refocus the collimated scattered electrons and map the focused collimated scattered electrons to transverse locations on an image plane representative of the electrons' positions in the object.

  17. Pouvoir et sexualité. Le discours féministe sur la prostitution en France (1968-1986.

    Directory of Open Access Journals (Sweden)

    Damien Simonin

    2010-07-01

    Full Text Available Cette recherche porte sur les discours sur la prostitution dans la presse féministe, entre 1968 et 1986 en France. Durant cette période, le mouvement féministe est composé de courants conflictuels (courants réformistes et révolutionnaires, différentialistes et universalistes et il porte des discours hétérogènes (informations sur la prostitution, analyses théoriques et politiques, témoignages de prostituées. Pourtant, ces discours s'accordent sur la revendication d'une libération des rapport...

  18. An electronic apparatus for early detection of changes in red cell ...

    African Journals Online (AJOL)

    1989-08-19

    Aug 19, 1989 ... An electronic apparatus was developed for anaesthetists to use to detect changes in red cell concentration during sur- gery. The mechanism is based on the relationship between the red cell content and the electrical conductivity of blood. In a pilot study of 170 blood samples, a correlation coefficient.

  19. Surface energy balance measurements in the Mexico City: a review

    Energy Technology Data Exchange (ETDEWEB)

    Tejeda Martinez, A. [Universidad Veracruzana, Xalapa, Veracruz (Mexico); Jauregui Ostos, E. [Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico, UNAM, Mexico, D.F. (Mexico)

    2005-01-01

    During the last decade of the 20th Century, diverse campaigns for measuring the atmospheric energy balance were performed in downtown Mexico City (School of Mines and Preparatory School No. 7), in the southern suburbs (University Reserve) and in the surrounding rural areas (Plan Texcoco), in addition to a campaign carried out in 1985 in the Tacubaya district, a suburban western peripheral site. The objective was to obtain data for a better understanding of the climatic alterations due to urbanization, particularly to describe the role that the modification of the natural ground cover has played as a result of paving and the construction of urban canyons. In this paper, a review of these campaigns is presented. Energy partitioning in some areas (Tacubaya and Preparatory School No.7) is similar to that observed in urban centers of middle latitudes, whereas the major contrast was observed between Texcoco, with maximum energy consumption through evaporation, and School of Mines, where the latent heat is as low as in a desert. From the values of the correlations among the different components of energy balance, it may be possible to attempt the modeling of the diverse components of energy balance by means of regression equations starting from the net radiation. Those same coefficients distinguish the type of environment: urban, suburban or rural. [Spanish] Las primeras mediciones de balance energetico en la Ciudad de Mexico se realizaron en 1985 en un suburbio al poniente de la ciudad (el observatorio de Tacubaya). Ya en la decada de los anos noventa del siglo XX, dichas observaciones se multiplicaron tanto en el centro historico (antigua Escuela de Minas y en el edificio de la Preparatoria No. 7), como en otros sitios al sur (en terrenos de Ciudad Universitaria) y en la periferia rural (Plan Texcoco). El proposito de estas mediciones ha sido tener un mejor entendimiento de las alteraciones climaticas debidas a la urbanizacion. En este trabajo se presenta una revision

  20. Morphology variation of Lutzomyia cruciata eggs (Diptera: Psychodidae: Phlebotominae) in southern Mexico.

    Science.gov (United States)

    Oca-Aguilar, Ana Celia Montes DE; Mikery-Pacheco, Oscar; Castillo, Alfredo; Rebollar-Téllez, Eduardo A; Piermarini, Peter M; Ibáñez-Bernal, Sergio

    2017-05-02

    The sand fly Lutzomyia cruciata has been associated with the transmission of Leishmania mexicana to humans in Mexico. This species has a wide distribution in Mexico occupying different microhabitats and environments. In this work comparisons of the egg exochorion of Lu. cruciata from different physiographic areas are presented. Study sites are from different states of southern Mexico. Exochorion analysis was carried out using scanning electron microscopy (SEM). Results show differences in the exochorionic pattern among samples from Veracruz (AVER), Yucatán (HOYU) and Chiapas (TACH). The morphotype "Chiapas" has a polygonal crest pattern, the morphotype "Veracruz" shows parallel and longitudinal crests with some or few connections, and the morphotype "Yucatán" has weak connections between crest ridges. These morphological differences could be the result of local adaptations or evidence of divergence within the nominal unit Lutzomyia cruciata.

  1. The herpetofauna of Sonora, Mexico, with comparisons to adjoining states

    Directory of Open Access Journals (Sweden)

    Enderson, E. F.

    2009-01-01

    Full Text Available Situated in the topographically complex transition between the Neotropics and the temperate biomes of North America,the state of Sonora, Mexico, has an extraordinarily diverse herpetofauna. Surprisingly little research has been conductedon the state’s amphibians and reptiles and many systematic and biogeographic questions remain unanswered. Tofacilitate future research, we provide a checklist of Sonora’s herpetofauna, documenting species presence based onmuseum specimens, our fieldwork, and published research. Sonora’s herpetofauna is placed in a regional biogeographicperspective via a checklist for the six adjoining states together with faunal analyses. A total of 402 species ofamphibians and reptiles are recorded from these seven states. Sonora has the greatest species richness (187 species,followed by Chihuahua (169 species, and Sinaloa (146 species. Sonora's herpetofauna is most similar to that ofChihuahua, with which it shares a long border. Eleven biogeographic affinity-based faunal groups are recognized. Ofthese, three are dominant in Sonora: a core group classified as "Sonoran" demonstrates strong affinity to SonoranDesertscrub and Sinaloan Thornscrub communities; a Tropical group - with many species reaching their northerndistributional limits in the state; and a Madrean group consisting largely of montane species. Our state-level faunalanalysis provides some evidence of peninsular depauperization of the herpetofauna on the Baja California peninsula duein part to the small number of Neotropical species present in Baja California Sur. Our faunal analysis points towarddistinctive mainland and peninsular Sonoran Desert herpetofaunas centered on Sonora and the Baja CaliforniaPeninsula, respectively, each with about 50 non-insular species, and each with species-level endemism nearing 50%.

  2. On some birds from southern Mexico

    NARCIS (Netherlands)

    Mees, G.F.

    1970-01-01

    In the years 1962/64 our museum purchased from Mr. Otto Epping, now of Pittsburgh, U.S.A., a collection of 700 bird-specimens from southern Mexico (mainly from Vera Cruz and Oaxaca, a few specimens from Puebla). As our museum was poorly provided with material from Mexico, this was a very welcome

  3. Facing NAFTA: Literacy and Work in Mexico.

    Science.gov (United States)

    Flores, Gloria Hernandez; Lankshear, Colin

    2000-01-01

    Outlines the deep and complex challenge faced by Mexico in its quest for closer economic integration with so-called advanced economies. Discusses extensive poverty and illiteracy, and the systematic exclusion of many people from access to the very kinds of learning required by Mexico's economic project. Argues that extraordinary efforts and…

  4. Interdisciplinary Education and Research in Mexico

    Science.gov (United States)

    Villa-Soto, Juan Carlos

    2016-01-01

    In this article we discuss interdisciplinary teaching and research in Latin America through the lens of Mexican perspectives, in particular the experiences at the National Autonomous University of Mexico (UNAM). The history of these experiences goes back to the creation of the frst interdisciplinary education programs in Mexico in the 1970s and…

  5. LCA of road infrastructure in Mexico City.

    NARCIS (Netherlands)

    Rosales Carreon, Jesus

    2007-01-01

    Vehicular traffic is a major problem in metropolitan areas and Mexico City is no exception. Located in a pollutant-trapping valley, Mexico City (one of the largest cities in the world) is famous for its size, its history, and the warmth of its people. Nev

  6. Plutonium in the Gulf of Mexico

    International Nuclear Information System (INIS)

    Scott, M.R.; Salter, P.F.

    The geochemistry of fallout plutonium in the sediments of the Gulf of Mexico was studied. A series of sediment cores was collected in a traverse from the deep Gulf of Mexico to the Mississippi Delta. The cores were sliced into 1 cm intervals and analyzed for plutonium. Explanations for the variations in concentration are presented

  7. New Mexico English Remediation Taskforce Report

    Science.gov (United States)

    New Mexico Higher Education Department, 2016

    2016-01-01

    In March, 2016, the state of New Mexico established a Remediation Task Force to examine remediation reform efforts across the state's higher education institutions. On March 11, the Task Force met for the "New Mexico Corequisite Remediation at Scale Policy Institute" in order to learn about the results of the latest national reform…

  8. 50 CFR 32.50 - New Mexico.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 6 2010-10-01 2010-10-01 false New Mexico. 32.50 Section 32.50 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR (CONTINUED) THE... § 32.50 New Mexico. The following refuge units have been opened for hunting and/or fishing, and are...

  9. 40 CFR 81.332 - New Mexico.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 17 2010-07-01 2010-07-01 false New Mexico. 81.332 Section 81.332... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.332 New Mexico. New Mexico—TSP Designated area Does not meet primary standards Does not meet secondary standards...

  10. 40 CFR 81.421 - New Mexico.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 17 2010-07-01 2010-07-01 false New Mexico. 81.421 Section 81.421 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) DESIGNATION OF... Visibility Is an Important Value § 81.421 New Mexico. Area name Acreage Public Law establishing Federal land...

  11. New Mexico Known Mineral Deposit Areas

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This dataset contains all Known Mineral Deposit Areas in the state of New Mexico. It is in a vector digital structure digitized from a 1:500,000 scale map of the...

  12. Postgraduate Professional Pedagogical Education in Mexico

    Science.gov (United States)

    Zhyzhko, Olena

    2015-01-01

    This article is the result of scientific comparative-pedagogical research, which purpose was to highlight the main features of postgraduate professional pedagogical education in Mexico. The author found that the postgraduate professional pedagogical education in Mexico is performed by public and private higher education institutions: higher…

  13. Espacio herido, tiempo acelerado, imaginario conmovido. Interrogantes sobre la postmodernidad del Sur.

    Directory of Open Access Journals (Sweden)

    Mabel Franzone

    2010-11-01

    Full Text Available Estableciendo una relación estrecha entre espacio, tiempo e imaginario, este escrito intenta tratar la gran separación Norte- Sur, acaecida con la hipermodernidad y sus consecuencias sobre la destrucción del espacio del Sur ; la cuestión de fondo encara las huellas que puede dejar en los cuerpos y en los imaginarios. Los límites impuestos se tratan en cuatro niveles : históricos, geográficos, económicos- sociales y de la representación. Para una crítica de la modernidad se han tomado parámetros de pensamiento que operan en una trama mediana, forma de pensar propia al Sur y que muestran la necesidad de una epistemología también propia al Sur, que refleje las cuestiones fundamentales y que tenga en cuenta la emancipación y la solidaridad como categorías para repensar el Sur.

  14. Advisable alternative fuels for Mexico; Combustibles alternativos convenientes para Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Aguilar Gonzalez, Jorge Luis [ICA Fluor (Mexico)

    2007-07-15

    The alternative fuels are born with the goal of not damaging the environment; biodiesel, electricity, ethanol, hydrogen, methanol, natural gas, LP gas, are the main alternative fuels. However, the biodiesel and bioetanol are the only completely renewable ones, this makes them ideal to be developed in Mexico, since the agricultural sector could be fortified, the technological independence be favored, improve the conservation of the oil resources and by all means not to affect the environment. On the other hand, also efficient cultivation techniques should be developed to guarantee the economy of the process. [Spanish] Los combustibles alternativos nacen con la meta de no danar el medio ambiente; el biodiesel, electricidad, etanol, hidrogeno, metanol, gas natural, gas LP, son los principales combustibles alternativos. No obstante, el biodiesel y el bioetanol son los unicos completamente renovables, esto los hace ideales para desarrollarse en Mexico, ya que se podria fortalecer el sector agricola, favorecer la independencia tecnologica, mejorar la administracion de los recursos petroleros y por supuesto no afectar al medio ambiente. Por otro lado tambien se tendrian que desarrollar tecnicas de cultivo eficientes para garantizar la economia del proceso.

  15. A summary of high-temperature electronics research and development

    International Nuclear Information System (INIS)

    Thome, F.V.; King, D.B.

    1991-01-01

    Current and future needs in automative, aircraft, space, military, and well logging industries require operation of electronics at higher temperatures than today's accepted limit of 395 K. Without the availability of high-temperature electronics, many systems must operate under derated conditions or must accept severe mass penalties required by coolant systems to maintain electronic temperatures below critical levels. This paper presents ongoing research and development in the electronics community to bring high-temperature electronics to commercial realization. Much of this work was recently reviewed at the First International High-Temperature Electronics Conference held 16--20 June 1991 in Albuquerque, New Mexico. 4 refs., 1 tab

  16. Update of Geothermics in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Gutierrez Negrin, Luis C.A.; Quijano Leon, Jose Luis [Comision Federal de Electricidad, Morelia, Michoacan (Mexico)

    2004-12-01

    Four geothermal fields are currently operating in Mexico (Cerro Prieto, Los Azufres, Los Humeros and Las Tres Virgenes), with a total installed geothermal-electric capacity of 953 megawatts (MW). This means the country is located in third place, worldwide, just behind the USA and Philippines. Thirty-six power plants of several types (condensing, back pressure and binary cycle), between 1.5 and 110 MW, operate in the fields, fed by 197 wells with a combined production of 7,700 metric tons of steam per hour (t/h). These production wells have depths between 600 and 4,400 meters. Steam comes with 8,750 t/h of brine that is injected through 19 injection wells or treated in a solar evaporation pond of 14 km2 in Cerro Prieto. During 2003, steam produced in those fields equaled 67.5 million metric tons, and the power plants generated 6,282 gigawatt-hours (GWh), which represented 3.1% of the electric energy produced in Mexico. All the power plants and the geothermal fields are operated bye the public utility, the Comision Federal de Electricidad (Comision Federal de Electricidad (CFE)). [Spanish] Actualmente se operan en Mexico cuatro campos geotermicos (Cerro Prieto, Los Azufres, Los Humeros y Las Tres Virgenes), con una capacidad geotermoelectrica total de 953 megawatts (MW). Esto coloca al pais en el tercer lugar mundial, detras de Estados Unidos y Filipinas. En esos campos operan treinta y seis unidades de tipos diversos (a condensacion, a contrapresion y de ciclo binario), entre 1.5 y 110 MW, alimentadas por 197 pozos con una produccion combinada de 7,700 toneladas de vapor por hora (t/h). Estos pozos productores tienen profundidades entre 600 y 4,400 metros. El vapor sale acompanado por 8,750 t/h de salmuera, que se inyecta en 19 pozos inyectores o se trata en una laguna de evaporacion solar de 14 km2 en Cerro Prieto. Durante 2003 el vapor producido en los campos sumo 67.5 millones de toneladas y las unidades generaron 6,282 gigawatts-hora (GWh), lo que represento el

  17. SANDIA MOUNTAIN WILDERNESS, NEW MEXICO.

    Science.gov (United States)

    Hedlund, D.C.; Kness, R.F.

    1984-01-01

    Geologic and mineral-resource investigations in the Sandia Mountains in New Mexico indicate that a small part of the area has a probable mineral-resource potential. Most of the mineral occurrences are small barite-fluorite veins that occur along faults on the eastern slope of the range. The barite veins in the Landsend area and in the Tunnel Spring area are classed as having a probable mineral-resource potential. Fluorite veins which occur at the La Luz mine contain silver-bearing galeana and the area near this mine is regarded as having a probable resource potential for silver. No energy resources were identified in this study.

  18. 9 CFR 93.325 - Horses from Mexico.

    Science.gov (United States)

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Horses from Mexico. 93.325 Section 93... CONVEYANCE AND SHIPPING CONTAINERS Horses Mexico 18 § 93.325 Horses from Mexico. Horses offered for entry from Mexico shall be inspected as provided in §§ 93.306 and 93.323; shall be accompanied by a...

  19. Electrons, Electronic Publishing, and Electronic Display.

    Science.gov (United States)

    Brownrigg, Edwin B.; Lynch, Clifford A.

    1985-01-01

    Provides a perspective on electronic publishing by distinguishing between "Newtonian" publishing and "quantum-mechanical" publishing. Highlights include media and publishing, works delivered through electronic media, electronic publishing and the printed word, management of intellectual property, and recent copyright-law issues…

  20. Quelques noddees sur l’ecologie de la vedetation des dunes et sur la fonction de l’enraciment dans l’edification de dunes a la Cote Mediterraneenne de la France. I

    NARCIS (Netherlands)

    Boterenbrood, A.J.; Donsellaar-Ten Bokkel Huinink, van W.A.E.; Donselaar, van J.

    1956-01-01

    Dans la végétation des dunes du Languedoc J. BRAUN-BLANQUET (1952) distingue trois associations, à savoir; 1) l’Agropyretum mediterraneum parmi et sur les premières dunes basses; 2) l’Ammophiletum arundinaceae sur les dunes plus hautes; et 3) le Crucianelletum maritimae dans les dépressions et en

  1. The wind power of Mexico

    International Nuclear Information System (INIS)

    Hernandez-Escobedo, Q.; Manzano-Agugliaro, F.; Zapata-Sierra, A.

    2010-01-01

    The high price of fossil fuels and the environmental damage they cause have encouraged the development of renewable energy resources, especially wind power. This work discusses the potential of wind power in Mexico, using data collected every 10 min between 2000 and 2008 at 133 automatic weather stations around the country. The wind speed, the number of hours of wind useful for generating electricity and the potential electrical power that could be generated were estimated for each year via the modelling of a wind turbine employing a logistic curve. A linear correlation of 90.3% was seen between the mean annual wind speed and the mean annual number of hours of useful wind. Maps were constructed of the country showing mean annual wind speeds, useful hours of wind, and the electrical power that could be generated. The results show that Mexico has great wind power potential with practically the entire country enjoying more than 1700 h of useful wind per year and the potential to generate over 2000 kW of electrical power per year per wind turbine installed (except for the Chiapas's State). Indeed, with the exception of six states, over 5000 kW per year could be generated by each turbine. (author)

  2. Les différences culturelles et leur impact sur la relation soignant-soigné

    OpenAIRE

    Uysal, Ayse; Matter, Catherine

    2011-01-01

    Ce travail porte sur les différences culturelles et leur impact sur la relation soignant-soigné lors d’une hospitalisation. Ainsi la problématique de recherche est centrée sur l’identification des difficultés et des spécificités présentes lorsque le soignant entre en relation avec un patient d’une culture différente. Le but de cette étude est d’identifier les difficultés et les obstacles liés à la culture, présents dans la relation soignant-soigné. Le deuxième but est de mettre en évidence le...

  3. Urbanismo y arquitectura moderna en madera en el sur de Chile: 1930-1970

    Directory of Open Access Journals (Sweden)

    Gonzalo Cerda Brintrup

    2005-07-01

    Full Text Available La investigación que se presenta tiene como objetivos estudiar el desarrollo de la arquitectura moderna en madera en el sur de Chile; indagar acerca de como esta se incerta en la tradición maderera de la arquitectura del sur; investigar su relación con el desarrollo de una identidad arquitectónica local;localizar y analizar sus ejemplos más significativos. El área de estudio es desde la VIII hasta la X Región, específicamente desde la Provincia de Concepción hasta Chiloé, por cuanto allí se concentra la mayor parte de la arquitectura en madera del sur del país.

  4. Bâle 3 : Quels impacts sur le financement des pays émergents ?

    OpenAIRE

    Figuet, Jean-Marc; Humblot, Thomas; Lahet, Delphine

    2013-01-01

    La persistance de crises bancaires démontre l'incapacité des établissements de crédit à s'autoréguler. De ce fait, le Comité de Bâle étend largement le périmètre de la nouvelle règlementation prudentielle. Sur la base de la littérature sur les déterminants des flux de capitaux transfrontières et d'un GMM système, cet article analyse l'impact potentiel de l'accord Bâle 3 sur les flux de capitaux bancaires provenant des banques de 16 pays industrialisés à destination d'un panel de 30 pays émerg...

  5. South Pacific Nuclear Free Zone Treaty; Tratado Sobre La Zona Desnuclearizada Del Pacifico Sur

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1986-02-15

    On 6 August 1985 the South Pacific Forum, a body comprising the independent and self-governing countries of the South Pacific (Australia, the Cook Islands, Fiji, Kiribati, Nauru, New Zealand, Niue, Papua New Guinea, the Solomon Islands, Tonga, Tuvalu, Vanuatu and Western Samoa), endorsed the text of the South Pacific Nuclear Free Zone Treaty and opened it for signature [Spanish] El 6 de agosto de 1985 el Foro del Pacifico Sur, organo compuesto por los paises independientes y autonomos del Pacifico Sur (Australia, Fiji, Islas Cook, Islas Salomon, Kiribati, Nauru, Niue, Nueva Zelandia, Papua Nueva Guinea, Samoa Occidental, Tonga, Tuvalu, y Vanuatu), aprobo el texto del Tratado sobre la Zona Desnuclearizada del Pacifico-Sur y lo abrio a la firma.

  6. EFFET DU GETTERING SUR LA LONGUEUR DE DIFFUSION DES PLAQUETTES DE SILICIUM SEMICRISTALLIN "SOPLIN"

    Directory of Open Access Journals (Sweden)

    A MOUHOUB

    2003-06-01

    Full Text Available L’effet des diffusions du phosphore à haute température (T = 900°C sur la longueur de diffusion (Ln des plaquettes de silicium semicristallin SOPLIN (SOlidification by PLanar INterface est déterminé par la mesure de la réponse spectrale de la photopile réalisée sur le matériau traité. L’influence de ces recuits sur les paramètres photovoltaïques est enregistrée dans les caractéristiques courant - tension sous éclairement simulé et la réponse spectrale.

  7. Enjeux de territoires sur une frontière méconnue

    Directory of Open Access Journals (Sweden)

    Françoise Grenand

    2012-11-01

    Full Text Available « J’ai travaillé dans le temps sur le chantier d’un pont sur le Zambèze. Je me suis toujours demandé pourquoi ils avaient décidé de faire un pont à cet endroit : c’est la même chose sur les deux rives… ». Humphrey Bogart, in African Queen, de John Huston, 1951.Il y a encore quatre décennies, la Guyane ignorait superbement qu’elle eût un voisin nommé Brésil. Une frontière en commun ? Et même la plus longue frontière terrestre de la France ? Les deux seules librairies du département ne proposai...

  8. 78 FR 14983 - Fisheries of the Gulf of Mexico; Gulf of Mexico Fishery Management Council; Public Meeting

    Science.gov (United States)

    2013-03-08

    ... the Gulf of Mexico; Gulf of Mexico Fishery Management Council; Public Meeting AGENCY: National Marine... of Gulf of Mexico Fishery Management Council Spanish Mackerel and Cobia Stock Assessment Review Workshop. SUMMARY: Independent peer review of Gulf of Mexico Spanish Mackerel and Cobia stocks will be...

  9. 77 FR 56168 - Reef Fish Fishery of the Gulf of Mexico; Gulf of Mexico Individual Fishing Quota Programs

    Science.gov (United States)

    2012-09-12

    .... 090206140-91081-03] RIN 0648-XC227 Reef Fish Fishery of the Gulf of Mexico; Gulf of Mexico Individual... red snapper and grouper/tilefish components of the reef fish fishery in the Gulf of Mexico (Gulf), the... INFORMATION: The reef fish fishery of the Gulf of Mexico is managed under the Fishery Management Plan for Reef...

  10. SurF: an innovative framework in biosecurity and animal health surveillance evaluation.

    Science.gov (United States)

    Muellner, Petra; Watts, Jonathan; Bingham, Paul; Bullians, Mark; Gould, Brendan; Pande, Anjali; Riding, Tim; Stevens, Paul; Vink, Daan; Stärk, Katharina Dc

    2018-05-16

    Surveillance for biosecurity hazards is being conducted by the New Zealand Competent Authority, the Ministry for Primary Industries (MPI) to support New Zealand's biosecurity system. Surveillance evaluation should be an integral part of the surveillance life cycle, as it provides a means to identify and correct problems and to sustain and enhance the existing strengths of a surveillance system. The surveillance evaluation Framework (SurF) presented here was developed to provide a generic framework within which the MPI biosecurity surveillance portfolio, and all of its components, can be consistently assessed. SurF is an innovative, cross-sectoral effort that aims to provide a common umbrella for surveillance evaluation in the animal, plant, environment and aquatic sectors. It supports the conduct of the following four distinct components of an evaluation project: (i) motivation for the evaluation, (ii) scope of the evaluation, (iii) evaluation design and implementation and (iv) reporting and communication of evaluation outputs. Case studies, prepared by MPI subject matter experts, are included in the framework to guide users in their assessment. Three case studies were used in the development of SurF in order to assure practical utility and to confirm usability of SurF across all included sectors. It is anticipated that the structured approach and information provided by SurF will not only be of benefit to MPI but also to other New Zealand stakeholders. Although SurF was developed for internal use by MPI, it could be applied to any surveillance system in New Zealand or elsewhere. © 2018 2018 The Authors. Transboundary and Emerging Diseases Published by Blackwell Verlag GmbH.

  11. Institutions de recherche sur les politiques et ODD liés à la santé ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Institutions de recherche sur les politiques et ODD liés à la santé ... Ce projet permettra de tirer des enseignements sur l'utilité des think tanks pour soutenir la sensibilisation et la mobilisation des citoyens eu égard à la mise en ... Site internet.

  12. Études de cas portant sur la recherche, les partenariats et l'équité en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    16 juil. 2012 ... Martin Forde, Karen Morrison, Eric Dewailly, Neela Badrie, Lyndon Robertson. Collaboration en matière de recherche sur la lutte contre les infections et la santé au travail sur trois continents : Une réussite de portée internationale. Annalee Yassi, Elizabeth A. Bryce, Jaime Breihl, Marie-Claude Lavoie, ...

  13. Motivation Factors for Female Entrepreneurship in Mexico

    Directory of Open Access Journals (Sweden)

    Martha Cantú Cavada

    2017-09-01

    Full Text Available Objective: The objective of this paper is to analyse motivation factors for female entrepreneurship in Mexico. In the proposed article, the authors discuss the factors which compelled women to start their enterprises in Mexico. Research Design & Methods: Based on in-depth interviews with female entrepreneurs and entrepreneurship experts, the authors show which factors motivated women to start their own business in Mexico. Findings: The study proves that women in Mexico are motivated by a combination of push and pull factors, where the majority of the factors are pull factors. The findings of the study help to conclude that female entrepreneurship development is influenced by different factors including the entrepreneurs’ personal traits, social and economic factors. Due to their conservative traditional attitude, risk adverse tendency, and non-cooperation of family members, etc. women entrepreneurs are sometimes deterred to start a business in Mexico. Implications & Recommendations: It is necessary to raise the awareness of different factors that promote female entrepreneurship in Mexico. Governmental programmes which support female entrepreneurship, business incubators, and networking could be very helpful for women when starting their own business. Contribution & Value Added: The originality of this work lies in studying motivational factors for female entrepreneurship in Mexico. The Mexican society faces a big revolution towards female entrepreneurship. Based on the change of family structure and traditions, women nowadays are having more opportunities to develop as entrepreneurs.

  14. A review of eating disorders research in Mexico.

    Science.gov (United States)

    Unikel, Claudia; Bojorquez, Ietza

    2007-02-01

    indizadas y tesis de grado, mediante los descriptores "trastorno alimentario," anorexia nervosa," bulimia nervosa," "imagen corporal," "atracones," "restricción alimentaria," "preocupación por el peso y la figura," y "conducta de dieta." Éstos se combinaron con el operador Booleano "AND" con "México" y "América Latina." Se presentan los hallazgos para la epidemiología, la validez de los instrumentos de medición, comorbilidad, y factores de riesgo. Una encuesta nacional representativa encontró una prevalencia de 1.8% para la bulimia nervosa, y ningún caso de anorexia nervosa. No obstante, la carencia de estudios con una entrevista clínica confirmatoria y de otras muestras nacionales o regionales dificulta el arribo a conclusiones acerca de la prevalencia real. Varios instrumentos para la detección de los trastornos alimentarios y de la alimentación desordenada se han validado en población mexicana. La comorbilidad de los trastornos alimentarios en México incluye el uso y abuso de alcohol, la obesidad y el trastorno de personalidad limítrofe. Los factores de riesgo referidos incluyen el peso corporal y la presión cultural para estar delgado. Las líneas de investigación futuras deberán incluir estudios epidemiológicos con muestras representativas y la confirmación del diagnóstico, estudios longitudinales, y la exploración de factores de riesgo y protectores específicos a esta población. L'objectif de cet article est de résumer les résultats de recherche et l'état actuel des connaissances sur les troubles alimentaires au Mexique. Les articles publiés dans des revues indexées et les thèses de doctorat ont été recensés en utilisant les mots-clés « eating disorders », « anorexia nervosa », « bulimia nervosa », « body image », « binge eating », « restrained eating », « weight and shape concern » et « dieting ». Ceux-ci furent combinés, en utilisant la conjonction « AND », avec les termes « Mexico » et « Latin America ». Les

  15. Les articles de 2017 à lire absolument sur CRDI.ca | CRDI - Centre ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Les articles de 2017 à lire absolument sur CRDI.ca. 02 janvier 2018. Le contenu le plus populaire publié cette année sur notre site Web offre un bon aperçu des défis en matière de développement revêtant une importance capitale pour nos lecteurs. Il démontre également la diversité du travail effectué par le CRDI de même ...

  16. Point de vue de la population sur la réforme du secteur de la ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Point de vue de la population sur la réforme du secteur de la sécurité palestinien. Dans le cadre de son plan visant à bâtir les institutions de l'État palestinien, le gouvernement de Salam Fayyad s'était engagé en août 2009 à moderniser le secteur de la sécurité palestinien en se fondant sur l'État de droit, sous la ...

  17. El impacto social de League of Legends en Corea del Sur

    OpenAIRE

    García Callealta, Desiré

    2016-01-01

    Trabajo de Fin de Máster del Máster en Asia oriental - Estudios japoneses, curso 2015-2016 [ES] Este trabajo consiste en una breve descripción y revisión bibliográfica sobre la historia de los e-Sports y su desarrollo en Corea del Sur. Debido a que se trata del primer videojuego tipo MOBA totalmente gratis que ha alcanzado la máxima popularidad en todo el mundo, League of Legends será el e-Sport central de esta exposición, si bien el impacto social que ha causado en Corea del Sur, la segun...

  18. Inmigración alemana en el sur de Chile, siglo XIX

    Directory of Open Access Journals (Sweden)

    Lisette Winkler

    2009-01-01

    Full Text Available Presentación (en español Durante aproximadamente un mes de trabajo de campo en Chile, Lisette Winkler (EScoM-FMSH ha grabado una serie de entrevistas que les hizo a los descendientes de los colonos alemanes quienes se instalaron en los alrededores del lago Llanquihue en el siglo XIX. Los documentos audiovisuales fueron recopilados en dos aldeas del sur del país, Frutillar y Puerto Octay. Recogen tanto testimonios orales de los descendientes como tomas panorámicas de los paisajes del sur, qu...

  19. Second Colloquim on the Scattering of Ultrasonic Waves (Deuxieme Colloque sur la Diffusion des Ondes Ultrasonores).

    Science.gov (United States)

    1985-01-29

    8217 eau , Huiti me colloque sur le traitement du signal et ses applications (GRETSI), Nice, 1-5 June 1981, p. 637-644. [16] G. Maze, B. Taconet, and J...December 1984, to appear as a special issue of Traitement du Signal, published by La Direction des Recherches, Etudes et Techniques, 26 blvd. Victor...submerged in water, Huiti~me collogue sur le traitement du signal et ses applications (GRETSI), Nice, 1-5 June 1981, p. 637-644. [19] G. Maze et J

  20. Plateforme régionale sur les ordinateurs personnels, déchets ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Institution. SUR Corporación de Estudios Sociales y Educación. Pays d' institution. Chili. Contenus connexes. Un numéro spécial de la revue met en lumière les conclusions d'une étude financée par le CRDI sur le travail rémunéré des femmes. Policy in Focus publie un numéro spécial présentant des données probantes ...

  1. Influence du traitement thermique sur quatre éléments métalliques ...

    African Journals Online (AJOL)

    Le but de notre étude est de suivre l\\'effet de la température de combustion sur quatre éléments métalliques (Cd, Cu, Pb et Zn). Les résultats expérimentaux montrent que la température de combustion a un effet sur la volatilisation des métaux lourds dans l'air. Pour déterminer le taux de vaporisation de ces métaux, des ...

  2. Les estimations du capital humain au Canada : approche fondee sur le revenu de la vie entiere

    OpenAIRE

    Gu, Wulong; Wong, Ambrose

    2010-01-01

    Dans le present document, nous produisons une estimation de l'investissement en capital humain fonde sur le marche et du stock de ce capital au Canada au cours de la periode s'etendant de 1970 a 2007 selon l'approche fondee sur le revenu de la vie entiere. Nous comparons cette estimation a celle de l'investissement en capital physique et naturel et du stock de ce capital. En suivant la methode elaboree par Jorgenson et Fraumeni, nous estimons le stock de capital humain sous forme du revenu de...

  3. Evaluation in vitro de l'efficacité du fipronil sur Culex pipiens pipiens

    OpenAIRE

    Toral y Caro, Muriel

    2005-01-01

    Les moustiques sont responsables de nuisances directes et indirectes, chez l'homme et chez l'animal. C'est pourquoi il est intéressant de tester l'efficacité de nouvelles molécules sur ces insectes. Ce travail expérimental vise à tester l'efficacité potentielle du fipronil sur les moustiques appartenant au complexe Culex pipiens au moyen d'un nouveau test mis en place au laboratoire. Une première partie de ce travail est consacrée à l'étude bibliographique des caractéristiques de Culex ...

  4. Impacts de l'exploitation artisanale de l'or sur les ressources ...

    African Journals Online (AJOL)

    L'exploitation de l'or est devenue ces deux dernières années l'activité principale de la population de Kéméni, une localité située dans la Préfecture de Tchaoudjo (Région Centrale du Togo). La présente étude a identifié l'impact de cette activité sur les ressources naturelles. L'approche méthodologique s'est basée sur des ...

  5. Inmigración alemana en el sur de Chile, siglo XIX

    OpenAIRE

    Winkler, Lisette

    2009-01-01

    Presentación (en español) Durante aproximadamente un mes de trabajo de campo en Chile, Lisette Winkler (EScoM-FMSH) ha grabado una serie de entrevistas que les hizo a los descendientes de los colonos alemanes quienes se instalaron en los alrededores del lago Llanquihue en el siglo XIX. Los documentos audiovisuales fueron recopilados en dos aldeas del sur del país, Frutillar y Puerto Octay. Recogen tanto testimonios orales de los descendientes como tomas panorámicas de los paisajes del sur, qu...

  6. The environmental policy in Mexico: Crisis and perspectives; La politica ambiental en Mexico: Crisis y perspectivas

    Energy Technology Data Exchange (ETDEWEB)

    Urquidi, Victor [Colegio de Mexico, Mexico, D. F. (Mexico)

    1996-12-31

    In this paper some aspects of the environmental situation in Mexico are condensed. The main roll performed by the modality of the energy resources consumption and the evolution of the environmental policy in Mexico from 1971 to 1996 is analyzed. It is concluded that in Mexico it has not been able to define the environmental policy in all its extension requiring, therefore, a greater participation of all the sectors to protect Nature and fight against the industrial and municipal pollution [Espanol] En esta ponencia se resumen algunos aspectos de la situacion ambiental actual de Mexico. Se analiza el papel central desempenado por la modalidad del consumo de energeticos y la evolucion de la politica ambiental en Mexico desde 1971 hasta 1996. Se concluye en que la politica ambiental en Mexico no se ha podido definir todavia en todos sus alcances por lo que se requiere una mayor participacion de todos los sectores para proteger la naturaleza y combatir la contaminacion industrial y municipal

  7. The environmental policy in Mexico: Crisis and perspectives; La politica ambiental en Mexico: Crisis y perspectivas

    Energy Technology Data Exchange (ETDEWEB)

    Urquidi, Victor [Colegio de Mexico, Mexico, D. F. (Mexico)

    1997-12-31

    In this paper some aspects of the environmental situation in Mexico are condensed. The main roll performed by the modality of the energy resources consumption and the evolution of the environmental policy in Mexico from 1971 to 1996 is analyzed. It is concluded that in Mexico it has not been able to define the environmental policy in all its extension requiring, therefore, a greater participation of all the sectors to protect Nature and fight against the industrial and municipal pollution [Espanol] En esta ponencia se resumen algunos aspectos de la situacion ambiental actual de Mexico. Se analiza el papel central desempenado por la modalidad del consumo de energeticos y la evolucion de la politica ambiental en Mexico desde 1971 hasta 1996. Se concluye en que la politica ambiental en Mexico no se ha podido definir todavia en todos sus alcances por lo que se requiere una mayor participacion de todos los sectores para proteger la naturaleza y combatir la contaminacion industrial y municipal

  8. Fracture hydraulic conductivity in the Mexico City clayey aquitard: Field piezometer rising-head tests

    Science.gov (United States)

    Vargas, Carlos; Ortega-Guerrero, Adrián

    A regional lacustrine aquitard covers the main aquifer of the metropolitan area of Mexico City. The aquitard's hydraulic conductivity (K') is fundamental for evaluating the natural protection of the aquifer against a variety of contaminants present on the surface and its hydraulic response. This study analyzes the distribution and variation of K' in the plains of Chalco, Texcoco and Mexico City (three of the six former lakes that existed in the Basin of Mexico), on the basis of 225 field-permeability tests, in nests of existing piezometers located at depths of 2-85 m. Tests were interpreted using the Hvorslev method and some by the Bouwer-Rice method. Results indicate that the distribution of K' fits log-Gaussian regression models. Dominant frequencies for K' in the Chalco and Texcoco plains range between 1E-09 and 1E-08 m/s, with similar population means of 1.19E-09 and 1.7E-09 m/s, respectively, which are one to two orders of magnitude higher than the matrix conductivity. In the Mexico City Plain the population mean is near by one order of magnitude lower; K'=2.6E-10 m/s. The contrast between the measured K' and that of the matrix is attributed to the presence of fractures in the upper 25-40 m, which is consistent with the findings of previous studies on solute migration in the aquitard. Un imperméable régional d'origine lacustre recouvre le principal aquifère de la zone urbaine de la ville de Mexico. La conductivité hydraulique K' de cet imperméable est fondamentale pour évaluer la protection naturelle de l'aquifère, contre les différents contaminants présents en surface, et sa réponse hydraulique. Cette étude analyse et les variations de K' dans les plaines de Chalco, Texcoco et Mexico (trois des six anciens lacs qui existaient dans le Bassin de Mexico), sur la base de 225 essais de perméabilité sur le terrain, réalisés en grappes dans des piézomètres existants entre 2 et 85 m de profondeur. Les essais ont été interprétés avec la m

  9. GSTAR-SUR Modeling With Calendar Variations And Intervention To Forecast Outflow Of Currencies In Java Indonesia

    Science.gov (United States)

    Akbar, M. S.; Setiawan; Suhartono; Ruchjana, B. N.; Riyadi, M. A. A.

    2018-03-01

    Ordinary Least Squares (OLS) is general method to estimates Generalized Space Time Autoregressive (GSTAR) parameters. But in some cases, the residuals of GSTAR are correlated between location. If OLS is applied to this case, then the estimators are inefficient. Generalized Least Squares (GLS) is a method used in Seemingly Unrelated Regression (SUR) model. This method estimated parameters of some models with residuals between equations are correlated. Simulation study shows that GSTAR with GLS method for estimating parameters (GSTAR-SUR) is more efficient than GSTAR-OLS method. The purpose of this research is to apply GSTAR-SUR with calendar variation and intervention as exogenous variable (GSTARX-SUR) for forecast outflow of currency in Java, Indonesia. As a result, GSTARX-SUR provides better performance than GSTARX-OLS.

  10. Electron detector

    International Nuclear Information System (INIS)

    Hashimoto, H.; Mogami, A.

    1975-01-01

    A device for measuring electron densities at a given energy level in an electron beam or the like having strong background noise, for example, in the detection of Auger electric energy spectrums is described. An electron analyzer passes electrons at the given energy level and at the same time electrons of at least one adjacent energy level. Detecting means associated therewith produce signals indicative of the densities of the electrons at each energy level and combine these signals to produce a signal indicative of the density of the electrons of the given energy level absent background noise

  11. First report of myxomatosis in Mexico.

    Science.gov (United States)

    Licón Luna, R M

    2000-07-01

    An outbreak of myxomatosis occurred between September and October 1993 on a rabbit farm in Punta Colnett (Ensenada, Baja California in northwestern Mexico, Transpeninsular Highway, km 128) and was confirmed by the Mexico-USA Commission for Prevention of Foreign Diseases of Animals (CPA). This represents the first officially confirmed case of the disease in Mexico. Like the cases in California (USA), the brush rabbit (Sylvilagus bachmani) seems to be the carrier of the virus, since serum samples from wild rabbits from different areas of the peninsula of Baja California were found to contain antibodies against the myxoma virus.

  12. NAFTA and Mexico's Tax Policy Reform

    OpenAIRE

    Jorge Martinez-Vazquez; Duanje Chen

    2001-01-01

    The North American Free Trade Agreement (NAFTA) has had a significant effect on Mexico’s economy and institutions. The ongoing consideration of tax reform in Mexico requires an evaluation of the role of NAFTA in Mexico’s economy, including its tax structure; it also requires an assessment of the impact of the Mexico’s tax system on the trade and capital flows between Mexico and its NAFTA partners, the United States and Canada. Clearly, no good tax reform in Mexico can ignore the role of NAFTA...

  13. La estrategia de liderazgo regional de la India a través de la cooperación sur-sur (2003-2012)

    OpenAIRE

    Jaime Garzón, Carlos Felipe

    2014-01-01

    La presente investigación tiene como objetivo analizar en qué medida la estrategia de liderazgo regional de la India ha sido impulsada a través de los programas y proyectos de cooperación sur-sur ofrecidos por este país en el periodo de 2003-2012. De igual forma se pretende indagar sobre el papel histórico que ha jugado la India en el establecimiento y posterior evolución de esta nueva forma de cooperación que ha sido vista por la mayoría de los académicos como un complemento de la cooperació...

  14. Study of the frequency modulation of various U.H.F. signals occurring in a linear electron accelerator; Etude de la modulation de frequence de divers signaux U.H.F. existant dans un accelerateur lineaire d'electrons

    Energy Technology Data Exchange (ETDEWEB)

    Bergere, R; Veyssiere, A; Daujat, P [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1966-06-01

    This paper contains a digest of a series of studies on the frequency modulation of U.H.F. fields and signals associated with the linear electron accelerator at Saclay. We first consider the frequency modulation of a U. H. F. pulse before its injection into an accelerating structure and after its subsequent propagation when no accelerated electrons are present. We then apply a similar analysis to the frequency modulation due to the direct interaction of the electron beam itself, and the accelerating U.H.F. fields. Finally we consider the phase modulation of the elementary electron packet itself. This phase modulation can be correctly interpreted by considering the dynamics of the electron beam as such. This analysis moreover, gives a correct interpretation of the evolution of the phase modulation with time, as the elementary electron packets move along with the sinusoidal U.H.F. accelerating fields. (authors) [French] Cet article resume les etudes faites sur l'accelerateur lineaire d'electrons de Saclay a propos de la modulation de frequence des divers signaux U.H.F. presents autour de l'accelerateur. On etudie d'abord la modulation de frequence des impulsions U.H.F. entrant sur la structure acceleratrice ou transmises par cette structure en l'absence de faisceau d'electrons acceleres. On analyse ensuite la modulation de frequence resultant de l'interaction d'une de ces ondes avec le faisceau d'electrons acceleres. On etudie enfin, la modulation de phase des divers paquets elementaires constituant une impulsion d'electrons acceleres. On montre comment cette modulation de phase peut s'expliquer par des considerations sur la dynamique du faisceau et conduire a une representation dans les divers cas possibles de l'evolution de la phase d'accrochage des electrons sur l'onde sinusoidale progressive de champ accelerateur. (auteurs)

  15. Rapport sur le développement dans le monde sur le thème du rôle ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ... rural et sont tributaires principalement de l'agriculture pour assurer leur subsistance. Ce projet permettra de veiller à ce qu'une place soit accordée aux travaux de recherche financés par le CRDI, aux points de vue différents et aux auteurs de l'hémisphère Sud dans le Rapport sur le développement dans le monde 2008.

  16. Tricotecenos y calidad de granos del Cono Sur

    Directory of Open Access Journals (Sweden)

    Jacqueline Cea

    2011-04-01

    Full Text Available Fusarium es un género de hongo complejo con especies que se adaptan a un amplio rango de habitats. ( Summerell et al.2001. Aunque hay docenas de especies de Fusarium, sólo un número limitado son responsables de la contaminación por micotoxinas en alimentos y raciones ( Marasas et al.1984b. Parte de estas micotoxinas son denominadas tricotecenos , involucrando mayoritariamente al deoxinivalenol (DON, sus derivados acetilados (3-acetyldeoxinivalenol y 15 acetildeoxinivalenol, T2,  HT2 y nivalenol. Según JECFA, los estudios realizados demuestran que el DON aparece predominantemente en granos tales como trigo, cebada, avena, centeno y maíz, y menos frecuentemente en arroz y sorgo. En la mayoría de las regiones del mundo, incluyendo el Cono Sur, Fusarium graminearum es el mayor agente causal de enfermedades de Fusaium en granos y cereales denominadas: Fusarium Head Blight en cereales y  Giberella ear rot en maíz. Se ha encontrado una relación directa entre la incidencia de Fusarium Head Blight y la contaminación de trigo con DON. La incidencia de la enfermedad esta afectada por las condiciones climáticas de lluvia y humedad en el período de la floración. El factor más crítico es el momento de la lluvia más que la cantidad. F. graminearum crece a una temperatura óptima de 25°C y a una actividad de agua de 0.88.Ejemplo de las consecuencias de Fusarium Head Blight en trigo, es lo ocurrido en la zafra 2001-2002 en Uruguay.  El trigo nacional sufrió contaminación con la consecuente producción de DON en valores comprometedores para la salud, tanto humana como animal. Esta situación sirvió como punto de partida para la concientización y toma de decisiones por parte de las autoridades. Es así que el MSP y MGAP establecieron  reglamentaciones con el objetivo de proteger la salud humana y animal. En forma paralela se implementó un Proyecto FAOPCT/URU/2801 de "Apoyo en la prevención y control de Fusarium y micotoxinas en granos

  17. The Man Who Tamed Mexico's Tiger: General Joaquin Amaro and the Professionalization of Mexico's Revolutionary Army

    National Research Council Canada - National Science Library

    Carriedo, Robert

    2005-01-01

    .... While effective in overthrowing Diaz, Mexico's revolutionary armies neither disbanded nor submitted themselves to civilian rule, but instead retained their character as undisciplined and fiercely...

  18. Electric Power Regulation in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Landa, J V [Universidad Nacional Autonoma de Mexico, Mexico City (Mexico)

    1994-12-31

    The history of the electrical power sector in Mexico, the prominent role that government plays in the generation, transformation, distribution and supply of electrical power, and the implications of the North American Free Trade Agreement (NAFTA) for this sector were summarized. The slow pace of the Mexican electricity sector in achieving cost efficiency through pricing policy was criticized, and the issue of regulation versus deregulation of the electricity sector was examined in the context of NAFTA, emphasizing the contradiction between the idea of international trade and a highly regulated industry. Revisions of the original constitutional article to exclude electrical power generation from governmental control and to allow market mechanisms and competition to lower costs and increase efficiency was recommended.It was considered a pre-condition to a stable balance between competition and energy efficient environmentally friendly practices.

  19. Mexico: perspectives in school health.

    Science.gov (United States)

    Allensworth, D M; Greene, A G

    1990-09-01

    The school health program in Mexico, directed by the Office of School Hygiene (la Unidad de Higiene Escolar), is in a state of flux. The program will change substantially if an initiative between the national offices of health and education is enacted. The initiative would establish a national commission to be replicated at state, county, and district levels. Commissions would oversee integration of the health services component, social participation, and research into the school health program which currently only focuses on health instruction and a healthy school environment. The initiative would restore and improve a former model that incorporated health services as a part of the school health program. The history of the school health program, which can trace its roots to 1861 and President Benito Juarez, is provided.

  20. An Energy Overview of Mexico

    International Nuclear Information System (INIS)

    2003-01-01

    The DOE Office of Fossil Energy is maintaining a web site that is meant to provide useful business- and energy-related information about countries and regions of the world for exporters, project developers, and researchers. The site consists of more than 130 country pages (organized into seven different world regions), with each country page having its own set of links to information sources about that country. There are also more than 30 Country Energy Overviews at the web site -- each of these is a comprehensive review of a specific country's entire energy situation, including sections on Energy Policy, Oil, Natural Gas, Coal, Hydroelectric/Renewables, Nuclear Power, Energy Transmission Infrastructure, Electricity, Electric Industry Overview, Environmental Activities, Privatization, Trade, and Economic Situation. The specific country highlighted in this Country Energy Overview is Mexico. The site is designed to be dynamic. Updates to the overviews will be made as need and resources permit

  1. Gamma irradiation service in Mexico

    International Nuclear Information System (INIS)

    Liceaga C, G.; Martinez A, L.; Mendez T, D.; Ortiz A, G.; Olvera G, R.

    1997-01-01

    In 1980 it was installed in Mexico, on the National Institute of Nuclear Research, an irradiator model J S-6500 of a canadian manufacture. Actually, this is the greatest plant in the Mexican Republic that offers a gamma irradiation process at commercial level to diverse industries. However, seeing that the demand for sterilize those products were not so much as the irradiation capacity it was opted by the incursion in other types of products. During 17 years had been irradiated a great variety of products grouped of the following form: dehydrated foods, disposable products for medical use, cosmetics, medicaments, various. Nowadays the capacity of the irradiator is saturated virtue of it is operated the 24 hours during the 365 days of the year and only its operation is suspended by the preventive and corrective maintenance. However, the fresh food market does not be attended since this irradiator was designed for doses greater than 10 kGy (1.0 Mrad)

  2. [Fertility and health in Mexico].

    Science.gov (United States)

    Urbina-Fuentes, M; Echánove-Fernández, E

    1989-01-01

    Fertility, health, and family planning are not independent factors, but rather involve a series of biological and social mechanisms in close interaction with one another. The impact that a high fertility rate has on health is reflected mainly in a rise in the rates of maternal and child mortality. Similarly, fertility has a greater negative effect upon the health of groups characterized by high reproductive risk, high parity, short intergenesic intervals, and unwanted pregnancies. On the other hand, family planning -and specifically the use of contraceptive methods-helps to achieve a lowering of the fertility rate and also has a positive effect on maternal-child health. This situation can be observed in the case of Mexico, where fertility rates and tendencies, as well as maternal and child mortality, have been reduced during the past decade.

  3. [Migratory circuits in western Mexico].

    Science.gov (United States)

    Durand, J

    1986-11-01

    The author examines patterns of internal and international migration in western Mexico. "Drawing on data from different sources and statistics, the essay demonstrates the importance of both types of migration, the changes in endogenous and exogenous factors which have affected the life and the migratory patterns of the population of this region. The migratory circuit being a flow not only of persons, but of goods and capital as well, the cities, specifically that of Guadalajara, have a strategic importance. They fulfill various functions and have become the backbone of the migratory process: they serve as centers for attracting and 'hosting' internal migrants as well as places of origin for other migrants; jumping-off points for international migrants; and the milieu in which many returning migrants of rural origin settle." (SUMMARY IN ENG AND FRE) excerpt

  4. Magnetic resonance imaging in Mexico

    Science.gov (United States)

    Rodriguez, A. O.; Rojas, R.; Barrios, F. A.

    2001-10-01

    MR imaging has experienced an important growth worldwide and in particular in the USA and Japan. This imaging technique has also shown an important rise in the number of MR imagers in Mexico. However, the development of MRI has followed a typical way of Latin American countries, which is very different from the path shown in the industrialised countries. Despite the fact that Mexico was one the very first countries to install and operate MR imagers in the world, it still lacks of qualified clinical and technical personnel. Since the first MR scanner started to operate, the number of units has grown at a moderate space that now sums up approximately 60 system installed nationwide. Nevertheless, there are no official records of the number of MR units operating, physicians and technicians involved in this imaging modality. The MRI market is dominated by two important companies: General Electric (approximately 51%) and Siemens (approximately 17.5%), the rest is shared by other five companies. According to the field intensity, medium-field systems (0.5 Tesla) represent 60% while a further 35% are 1.0 T or higher. Almost all of these units are in private hospitals and clinics: there is no high-field MR imagers in any public hospital. Because the political changes in the country, a new public plan for health care is still in the process and will be published soon this year. This plan will be determined by the new Congress. North American Free Trade Agreement (NAFTA) and president Fox. Experience acquired in the past shows that the demand for qualified professionals will grow in the new future. Therefore, systematic training of clinical and technical professionals will be in high demand to meet the needs of this technique. The National University (UNAM) and the Metropolitan University (UAM-Iztapalapa) are collaborating with diverse clinical groups in private facilities to create a systematic training program and carry out research and development in MRI

  5. Electron/electron acoustic instability

    International Nuclear Information System (INIS)

    Gary, S.P.

    1987-01-01

    The electron acoustic wave becomes a normal mode of an unmagnetized collisionless plasma in the presence of two electron components with similar densities, but strongly disparate temperatures. The characteristic frequency of this mode is the plasma frequency of the cooler electron component. If these two electron components have a relative drift speed several times the thermal speed of the cooler component, the electron/electron acoustic instability may arise. This paper describes the parametric dependences of the threshold drift speed and maximum growth rate of this instability, and compares these with the same properties of the electron/ion acoustic instability. Under the condition of zero current, the electron/ion acoustic instability typically has the lower threshold drift speed, so that observation of the electron/electron acoustic instability is a strong indication of the presence of an electrical current in the plasma

  6. A preliminary study of reproductive outcomes of female maquiladora workers in Tijuana, Mexico.

    Science.gov (United States)

    Eskenazi, B; Guendelman, S; Elkin, E P; Jasis, M

    1993-12-01

    Maquiladoras are plants on the Mexican side of the United States-Mexico border which are used largely by U.S. manufacturers to assemble premanufactured parts. We examined reproductive outcomes of women employed in electronics (N = 120) and garment (N = 121) maquiladora work compared to women employed in the service sector (N = 119) in Tijuana, Mexico. Women recruited by community health workers were interviewed about their reproductive history, sociodemographic characteristics, health behaviors, and characteristics of their current job. Length of regular menstrual cycle in the past year as well as time of conception and rates of fetal loss in the most recent pregnancy were similar across occupational groups. However, infants of garment maquiladora workers were 653 g lighter (95% confidence interval [CI]: -1,041 g, -265 g) and infants of electronic maquiladora workers were 337 g lighter (95% CI: -682 g, 9 g) than infants of service workers after adjusting for potential confounders. The cause of these differences remains unclear.

  7. Protected Areas Database for New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The Protected Areas Database of the United States (PAD-US) is a geodatabase, managed by USGS GAP, that illustrates and describes public land ownership, management...

  8. Mexico East-West Deflections (DMEX97)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This 2' surface deflection of the vertical grid for Mexico, and North-Central is the DMEX97 model. The computation used about one million terrestrial and marine...

  9. Building the gas sector in Mexico

    International Nuclear Information System (INIS)

    Navarrete, J.E.

    1996-01-01

    Hydrocarbon reserves in Mexico, ranked 8th in the world, were discussed. On January 1, 1996, Mexico's hydrocarbon proven reserves were 62.1 billion barrels ( a decline of some 10 billion barrels since 1984). Of this 48.8 billion corresponded to crude oil and 13.3 billion to natural gas. Mexico's natural gas pipeline network includes 10,280 kilometres in transmission and 2,211 kilometres in distribution, concentrated along the Gulf of Mexico and in the central and northern regions of the country. A new regulatory framework for natural gas, passed in Congress in 1995, was outlined. The new amendments were designed to strengthen the natural gas industry through private investment in the storage, transportation and distribution of natural gas. Stages for third party access were identified. Increased North American regional integration by interconnections between Mexican, American and Canadian pipeline networks, and the effects of such integration on investments, were examined. figs

  10. West Nile virus infection of birds, Mexico.

    Science.gov (United States)

    Guerrero-Sánchez, Sergio; Cuevas-Romero, Sandra; Nemeth, Nicole M; Trujillo-Olivera, María Teresa Jesús; Worwa, Gabriella; Dupuis, Alan; Brault, Aaron C; Kramer, Laura D; Komar, Nicholas; Estrada-Franco, José Guillermo

    2011-12-01

    West Nile virus (WNV) has caused disease in humans, equids, and birds at lower frequency in Mexico than in the United States. We hypothesized that the seemingly reduced virulence in Mexico was caused by attenuation of the Tabasco strain from southeastern Mexico, resulting in lower viremia than that caused by the Tecate strain from the more northern location of Baja California. During 2006-2008, we tested this hypothesis in candidate avian amplifying hosts: domestic chickens, rock pigeons, house sparrows, great-tailed grackles, and clay-colored thrushes. Only great-tailed grackles and house sparrows were competent amplifying hosts for both strains, and deaths occurred in each species. Tecate strain viremia levels were higher for thrushes. Both strains produced low-level viremia in pigeons and chickens. Our results suggest that certain avian hosts within Mexico are competent for efficient amplification of both northern and southern WNV strains and that both strains likely contribute to bird deaths.

  11. Migratory Bird Joint Ventures of New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — A joint venture is a self-directed partnership of agencies, organizations, corporations, tribes, or individuals that has formally accepted the responsibility of...

  12. New Mexico Populated Places (GNIS), 2009

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The Geographic Names Information System (GNIS) actively seeks data from and partnerships with Government agencies at all levels and other interested organizations....

  13. Mexico North-South Deflections (DMEX97)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This 2' surface deflection of the vertical grid for Mexico, and North-Central is the DMEX97 model. The computation used about one million terrestrial and marine...

  14. HSIP New Mexico State Government Buildings

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This dataset includes buildings occupied by the headquarters of cabinet level state government executive departments, legislative offices buildings outside of the...

  15. Landscape Conservative Cooperatives for New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — Landscape conservation cooperatives (LCCs) are conservation-science partnerships between the U.S. Fish and Wildlife Service, U.S. Geological Survey (USGS), and other...

  16. Level III Eco Regions for New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — Ecoregions by state were extracted from the seamless national shapefile. Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and...

  17. Sustainability analysis of agave production in Mexico

    NARCIS (Netherlands)

    Ibarrola Rivas, Maria Jose

    2010-01-01

    Worldwide food production is done in different types of agricultural production systems. The main difference is whether it is an intensive or extensive system. The agave production in Mexico has been developed in these two different ways. Firstly, agave f

  18. Gulf of Mexico Ecosystem Status Report

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Gulf of Mexico is one of the most ecologically and economically valuable marine ecosystems in the world and is affected by a variety of natural and anthropogenic...

  19. Gulf of Mexico Nutrient, carbon, CTD data

    Data.gov (United States)

    U.S. Environmental Protection Agency — Gulf of Mexico cruise, nearshore and CTD data collected by the USEPA during 2002 - 2008. This dataset is associated with the following publications: Pauer , J., T....

  20. New Mexico County Boundaries (2010 Census)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census...

  1. HSIP Correctional Institutions in New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — Jails and Prisons (Correctional Institutions). The Jails and Prisons sub-layer is part of the Emergency Law Enforcement Sector and the Critical Infrastructure...

  2. HSIP Law Enforcement Locations in New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — Law Enforcement Locations Any location where sworn officers of a law enforcement agency are regularly based or stationed. Law Enforcement agencies "are publicly...

  3. Relations between Mexico and the European Community

    Directory of Open Access Journals (Sweden)

    Pilar Alonso

    1992-12-01

    Full Text Available Mexico-EC bilateral relations must be considered within the general relation ECLatin America which -as the author remarks, do not appear among EC's preferential relations.Latin America can benefit from the Generalized Preference System which is not discriminatory, without reciprocity and generalized, but has some restrictions: for some products as textile, leather or oil. This affects some Latin American countries and specifically Mexico.Mexico initiates its relation with the EC in 1960; in 1975 both parts sign the Agreement on Economic and Trade Cooperation which has been substituted by the new General Agreement on Cooperation signed on April26, 1991. A new factor that will condition this relation is the Free Trade Agreement recently signed between USA, Canada and Mexico.

  4. Level IV Eco Regions for New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — Ecoregions by state were extracted from the seamless national shapefile. Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and...

  5. A new Proposal to Mexico Valley Zonification

    Science.gov (United States)

    Flores-Estrella, H. C.; Yussim, S.; Lomnitz, C.

    2004-12-01

    The effects of the Michoacan earthquake (19th September, 1985, Mw 8.1) in Mexico City caused a significant change in the political, social and scientific history, as it was considered the worst seismic disaster ever lived in Mexico. Since then, numerous efforts have been made to understand and determine the parameters that caused the special features registered. One of these efforts had began on 1960 with the work by Marsal and Masari, who published the Mexico Valley seismological and geotechnical zonification (1969), based on gravimetric and shallow borehole data. In this work, we present a revision of the studies that proposed the zonification, a description of the valley geology, and basing on it we propose a new zonification for Mexico Valley.

  6. 2013 Gulf of Mexico SPCE angler survey

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This survey provides economic data related to marine recreational fishing in the Gulf of Mexico. The data collected include preference and opinion information...

  7. Southeast Gulf of Mexico Sperm Whale Study

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Large vessel surveys were conducted during the summers of 2012 and 2014 in the southeastern Gulf of Mexico north of the Dry Tortugas. Data were collected on the...

  8. Historical account of venereal diseases in Mexico.

    OpenAIRE

    Conde-Glez, C J; Calderón, E; Juárez-Figueroa, L; Hernández-Avila, M

    1993-01-01

    This paper reviews the history of sexually acquired diseases in Mexico. It is divided into four major chronological sections which discuss social attitudes and values, the development of services and of official policy, and historical epidemiology.

  9. New Mexico, 2010 Census American Indian

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census...

  10. Bilateral relations Mexico-Korea today

    Directory of Open Access Journals (Sweden)

    Cecilia Ramírez Figueroa

    2007-06-01

    Full Text Available The ambassador of the Republic of Korea in Mexico, Sr. Cho Kyuhyung, remember us the first century if the korean migration to Mexico. In this one hundred years ours countries have approched and lauched a joint work with great value. They have worked for growth of trade and investment, They have promoted cultural and scientific exchanges. They have worked, especially in the enrichment of a friendship that will surely last for many more years.

  11. Epidemic Risk from Cholera Introductions into Mexico

    OpenAIRE

    Moore, Sean M.; Shannon, Kerry L.; Zelaya, Carla E.; Azman, Andrew S.; Lessler, Justin

    2014-01-01

    Stemming from the 2010 cholera outbreak in Haiti, cholera transmission in Hispaniola continues with over 40,000 cases in 2013. The presence of an ongoing cholera outbreak in the region poses substantial risks to countries throughout the Americas, particularly in areas with poor infrastructure. Since September 9, 2013 nearly 200 cholera cases have been reported in Mexico, as a result of introductions from Hispaniola or Cuba. There appear to have been multiple introductions into Mexico resultin...

  12. China in Mexico: More Opportunity than Risk

    Science.gov (United States)

    2011-10-17

    factory.55 Mexico’s percent of Ford’s U.S. car production went from 11.8 in 2006 to 16 percent in 2008.56 Nissan , Mazda, Volkswagen, Audi, Toyota ... compared to the time lag (and increased cost) of over a week required to transport products from China to the United States. Even in the well...and Honda also produce cars in Mexico, all increasing investment and manufacturing facilities.57 China, in selecting Mexico as a major FDI

  13. Water Scarcity and Water Policy in Mexico

    OpenAIRE

    Facchini, Gianluca

    2009-01-01

    This thesis addresses the possible solutions to control demand and supply of water for a sustainable environment in Mexico, along with a detailed analyses of economic implications related to the water sector. At the same time it focuses on the opportunities and constraints to improve the use of water and the allocation in the agricultural sector, by a system of transferable water-use permits. Actual examples are provided nationwide to the current situation in Mexico, focusing on problems rela...

  14. The Zapatista Social Netwar in Mexico

    Science.gov (United States)

    1998-01-01

    on the Internet. 4From a statement by Subcommandante Marcos, March 4, 1994, as reported by the Academia Mexicana de Derechos Humanos , Special...Indigenas de Mexico, Mexico City: Comisiön Nacional de Derechos Humanos , 1995. Evan, William M., "An Organization-Set Model of Interorganizational...City: Comision Nacional de Dere- chos Humanos , 1995. Meisel, James, The Fall of the Republic: Military Revolt in France, Ann Arbor: University of

  15. Twelve years of continuous measurements of atmospheric electrical activity in Mexico's Tropical highland

    Energy Technology Data Exchange (ETDEWEB)

    Troncoso Lozada, O. [Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico (UNAM), Mexico, D.F. (Mexico)

    2004-04-01

    Atmospheric electric activity measurements have been recorded continuously by a punctual lightning system at a tropical highland observatory from 1988 onwards, and were analyzed to obtain lightning statistical confident results for thunderstorms occurrence on the leeward side of the southern mountain ridge of Mexico's Valley. Shown, as examples, are individual profiles of the atmospheric electrical activity, associated with severe storms. The results make clear that the fastest possible sequence of electrical measurements is required to obtain significant and applications oriented data in connection with a whole series of thunderstorms taking into account the mean time variation of the atmospheric electricity measurements at an altitude of 2270 m a.s.l. The seasonal variation indicates that the lightning flash peak currents were found to be larger in summer with less than 10% occurring in the autumn and winter. With rainfall data from a network of 66 stations, we obtained a significant correlation with the lightning frequency. Special attention was undertaken concerning the question of the atmospheric electrical activity and climate at Valley of Mexico. [Spanish] Se midieron ininterrumpidamente las variaciones de la actividad electrica en la atmosfera, de enero de 1988 a diciembre de 1999, en un observatorio de altura (2,250 m s.n.m.), y se analizaron para obtener resultados estadisticos confiables con relacion a la ocurrencia de tormentas en la region sur del Valle de Mexico. Como ejemplos, se muestran los perfiles individuales de la actividad electrica atmosferica asociada con tormentas severas. Los resultados dejan claro que se requiere de la secuencia de medidas electricas lo mas rapida posible para obtener datos significativos y aplicables en relacion con una serie completa de tormentas, considerando la media del tiempo de variacion de las mediciones de la actividad electrica atmosferica a una altitud de 2,270 m s.n.m. La validacion estacional indica que

  16. Identifying tsunami deposits using shell taphonomy: Sur lagoon, Oman

    Science.gov (United States)

    Donato, S.; Reinhardt, E.; Rothaus, R.; Boyce, J.

    2007-05-01

    On November 28th, 1945 an 8.1 magnitude earthquake focused in the eastern portion of the Makran subduction zone (Arabian Sea) generated a powerful tsunami that destroyed many coastal villages in Pakistan and India. Reports indicate that the tsunami also caused significant damage in Muscat, Oman, although its effects elsewhere in Oman are unknown. A thick bivalve dominated shell horizon was discovered inside the Sur lagoon, which is located on the eastern promontory of Oman (200 km south of Muscat). This shell deposit is significant because it is laterally extensive (> 1 km2), extends deep within the lagoon (>2 km), ranges in thickness from 5 - 25 cm at the sample localities, contains numerous subtidal and offshore bivalve species, and articulated subtidal and offshore bivalve species are abundant. Although there is an absence of typical tsunami indicators such as allochthonous sediment in and around the lagoon, verbal accounts, cultural evidence recovered during coring, and the absence of strong storms during the past 100 years indicates that this shell unit was caused by the 1945 tsunami. In this setting, it would be advantageous to have another proxy for tsunami detection and risk prediction. The use of shell taphonomy is one of the potential indicators and here we present new evidence of its utility. We sampled this unit in eight locations, and compared the shell taphonomy to surface shell samples collected from beach and reworked horizons in the lagoon, and to shell samples from a known tsunami and corresponding storm/ballast deposit in Israel (Reinhardt et al., 2006). Taphonomic analysis yielded promising results, as the two tsunami horizons shared excellent agreement between the amount of fragmented shells, and the percentage of shells displaying angular breaks. Both of these categories were significantly different from the percentage of fragments and angular fragments recovered from the reworked, beach, and storm/ballast deposits, indicating different

  17. Impacts des caractéristiques physico-chimiques des eaux sur la ...

    African Journals Online (AJOL)

    Mart.) and Panicum maximum (Jacq.). Water Resources and Industry, 16: 1-18. https://doi.org/10.1016/j.wri.2016.07.001. Priso RJ, Dibong SD, Tchinda-Metagne C,. Taffouo VD, Ndongo D, Amougou A. 2010. Impacts des eaux polluées sur la.

  18. Eric Clapton et Pete Postlethwaite sur la liste des honneurs de fin d'annee

    CERN Multimedia

    2003-01-01

    "Le guitariste Eric Clapton, l'acteur Pete Postlethwaite et l'un des peres de l'internet Tim Berners-Lee figurent, aux cotes du XV d'Angleterre, sur la liste de fin d'annee des principales personnalites distinguees par la reine Elizabeth II" (1/2 page).

  19. Effet des opérations unitaires d'extraction sur le rendement et la ...

    African Journals Online (AJOL)

    SARAH

    28 févr. 2015 ... J. Appl. Biosci. Effet des opérations unitaires d'extraction sur le rendement et la qualité du beurre de Pentadesma butyracea produit en milieu traditionnel au Bénin. 7977. Effect of unit operations on the extraction yield and quality of the Pentadesma butyracea butter produced in traditional areas of Benin.

  20. Le point sur le sida, l'alimentation et la nutrition | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    agriculture et l'alimentation ( FAO ), Stuart Gillespie a passé six mois à étudier le lien entre le VIH/sida et la sécurité alimentaire. Il a vite compris que l'épidémie risquait d'avoir, à long terme, des répercussions désastreuses sur la ...