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Sample records for active luna tabasco

  1. Chemical modeling of formation water of the active Luna, Tabasco; Modelacion quimica de aguas de formacion del activo Luna, Tabasco

    Energy Technology Data Exchange (ETDEWEB)

    Barragan R, Rosa M; Portugal M, Enrique; Arellano G, Victor M. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Martinez A, Ana E; Ascencio C, Fernando [Petroleos Mexicanos (Mexico)

    2001-07-01

    From the data of chemical composition of the water, the chemical equilibrium at a given temperature can be modeled for, later, obtain the saturation indexes of characteristic minerals with the intention of knowing or predict which phases can form the deposits. The Gerencia de Productividad de Pozos (GPP) of the Subdivision of Technology and Professional Development (STDP) of PEMEX, has among its objectives to promote studies tending to solve problematic that affect the wells productivity, reason why it showed interest in making a study of chemical modeling of formation waters of the Active Luna, in order to know the saturation state of the main mineral phases. This way a joint project was executed in 1997 among the GPP, the Active of Production Luna of PEMEX and the Gerencia de Geotermia of the IIE. The objectives of the project were: (a) sampling and physicochemical characterization of waters pertaining to oil wells of the Actives of Production Luna, and (b) modeling of the chemical equilibrium at well head and deposit conditions to obtain saturation indexes of characteristic minerals of hydrothermal systems, in order to predict the mineral phases that can be found in superficial and deep incrustations. [Spanish] A partir de los datos de composicion quimica del agua, pude modelarse el equilibrio quimico a una temperatura dada para, posteriormente, obtener los indices de saturacion de los minerales caracteristicos con el objeto de conocer o predecir cuales fases pueden formar los depositos. La Gerencia de Productividad de Pozos (GPP) de la Subdireccion de Tecnologia y Desarrollo Profesional (STDP) de Pemex, tiene entre sus objetivos promover estudios tendientes a resolver problematicas que impactan la productividad de los pozos, por lo que mostro interes en realizar un estudio de modelacion quimica de las aguas de formacion del Activo Luna, con el proposito de conocer el estado de saturacion de las principales fases minerales. De esta forma se realizo un proyecto

  2. Chemical Equilibrium and Mineral Saturation in Waters from Oil Wells of the Activo Luna Field, Tabasco, Mexico; Equilibrio quimico y grado de saturacion de minerales en aguas de pozos petroleros de Activo Luna, Tabasco, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Barragan R, Rosa Maria; Arellano G, Victor M.; Portugal M, Enrique; Torres R, Vicente [Instituto de Investigaciones Electricas (Mexico); Torres Alvarado, Ignacio [Universidad Nacional Autonoma de Mexico (Mexico); Ascencio C, Fernando; Martinez A; Ana E [Petroleos Mexicanos (Mexico)

    2001-09-01

    Chemical equilibrium of formation waters from seven oil wells of the Activo Luna field (Tabasco, Mexico) was modelled. Saturation indices of characteristic hydrothermal minerals were calculated at ambient and reservoir conditions in order to predict scaling potential of deep and surface installations. The salinity of waters was found to be in the range from 43,000 (well Escuintle 2) to 250,000 (well Lune 3B) mg/kg as total dissolved solids. The water samples were classified as sodium-chioride type. Ionic strength for the solutions was found to be between 0.75 and 6.5. Activity coefficients were estimated by virial (Pitzer equations) methods using the GEOCHEMIST WORKENCH (GWB) software. Minerals such as anhydrite, halite, alunite, fluorite and barite were found to be supersaturated at reservoir conditions. A solid scale sample obtained from well Luna-3B was analysed. Analysis indicate the presence of calcite, anhydrite, fluorite and sphalerite which suggest the occurrence of temperatures of at least 180 Celcius degrees with acidic conditions and high chemical corrosion potential. [Spanish] Se modelo el equilibrio quimico de aguas de formacion producidas por siete pozos petroleros pertenecientes al Activo Luna, en el estado de Tabasco, Mexico, se calcularon los indices de saturacion de minerales caracteristicos tanto en las condiciones ambiente como en las de yacimiento, con el proposito de apoyar el control de incrustaciones en las instalaciones superficiales y profundas. La salinidad de las salmueras se encontro en el rango de 43,000 (pozos Escuintle 2) a 250,000 (pozos Luna 3B) mg/kg de solidos disueltos totales y las muestras se clasificaron como del tipo clorurado-sodico. La fuerza ionica de las soluciones varia entre 0.75 y 6.5 molar, por lo que los coeficientes de actividad de la modelacion de equilibrio quimico se estimaron por metodos viriales empleando las ecuaciones de Pitzer mediante el programa GEOCHEMIST WORKBENCH (GWB). Minerales como anhidrita, halita

  3. IN VITRO ANTIHELMINTIC ACTIVITY OF THREE PLANT SPECIES TRADITIONALLY USED IN TABASCO, MEXICO.

    OpenAIRE

    Judith Espinosa-Moreno; Dora Centurión-Hidalgo; Gerardo Guillermo Vera y Cuspinera; Eréndira Pérez-Castañeda; Claudia Virginia Zaragoza-Vera; Sara Martínez-Martínez; Pedro Mendoza-de-Gives; Manases González-Cortázar

    2016-01-01

    Antihelmintic activity against Haemonchus contortus was searched as a new alternative for animal health improvement using three plants (Cydista aequinoctialis L., Heliotropium indicum L. and Momordica charantia L.) of traditional usage in the rural area of Tabasco State, Mexico. Aqueous extracts were obtained of dried material. Each extract was diluted in distilled water to obtain a concentration of 20 mg ml-1. The antihelmintic activity was evaluated at 24, 48 y 72 h of exposition with 100 μ...

  4. IN VITRO ANTIHELMINTIC ACTIVITY OF THREE PLANT SPECIES TRADITIONALLY USED IN TABASCO, MEXICO.

    Directory of Open Access Journals (Sweden)

    Judith Espinosa-Moreno

    2016-03-01

    Full Text Available Antihelmintic activity against Haemonchus contortus was searched as a new alternative for animal health improvement using three plants (Cydista aequinoctialis L., Heliotropium indicum L. and Momordica charantia L. of traditional usage in the rural area of Tabasco State, Mexico. Aqueous extracts were obtained of dried material. Each extract was diluted in distilled water to obtain a concentration of 20 mg ml-1. The antihelmintic activity was evaluated at 24, 48 y 72 h of exposition with 100 μL of each extract and 50 L3 unsheathed larvaes of H. contortus in a 96 well ELISA plaque.;/span;

  5. Oiling the system: How activities and the state shaped the politics of petroleum development in Tabasco, Mexico

    Science.gov (United States)

    Hanson, Heather Dawn

    This dissertation analyzes the social, economic and political processes that accompanied the development of petroleum resources in Tabasco, Mexico. Through an historical examination of the case of Tabasco, I explore the general question of how and why state-led development becomes a contested terrain. Why does this sort of activism flourish during some time periods and not others? Under what conditions are relatively marginalized people able to effectively challenge the sort of domination inherent in state-led development plans? To what extent can activists succeed at reshaping the course of development? I argue that protest of state-led development is not necessarily linked to the pace or absolute impact of the social, environmental and economic changes being promoted. Instead, what is most central is the degree to which activists can successfully portray state-led development as an unjust process that contributes to inequality. However, the fact that activists are always constrained by the limits of existing state discourse seriously constrains the range of actions open to marginalized people. In the case of oil development in Tabasco, while activists were free to challenge the uneven distribution of rents, they have not been able to challenge the process itself. Indeed, the promise of material progress is common ground for both activists and the state. I conclude my dissertation with the observation that just as state discourses simultaneously create and limit possibilities for citizen protest, so social movement discourses simultaneously push for change and solidify the existing inequitable social structures.

  6. Surgit luna

    DEFF Research Database (Denmark)

    Tortzen, Gorm

    2008-01-01

    I forbindelse med musikopførelsen af Lorca's 'Blosbryllup' har jeg oversat fire af hans digte til latin. De blev alle opført, og et af dem 'Surgit luna' findes aftrykt i programmet.......I forbindelse med musikopførelsen af Lorca's 'Blosbryllup' har jeg oversat fire af hans digte til latin. De blev alle opført, og et af dem 'Surgit luna' findes aftrykt i programmet....

  7. Comparison of the LUNA 3He(alpha,gamma)7Be activation results with earlier measurements and model calculations

    CERN Document Server

    Gyurky, Gy; Confortola, F; Costantini, H; Formicola, A; Bonetti, R; Broggini, C; Corvisiero, P; Elekes, Z; Fülöp, Z; Gervino, G; Guglielmetti, A; Gustavino, C; Imbriani, G; Junker, M; Laubenstein, M; Lemut, A; Limata, B; Lozza, V; Marta, M; Menegazzo, R; Prati, P; Roca, V; Rolfs, C; Alvarez, C Rossi; Somorjai, E; Straniero, O; Strieder, F; Terrasi, F; Trautvetter, H P

    2007-01-01

    Recently, the LUNA collaboration has carried out a high precision measurement on the 3He(alpha,gamma)7Be reaction cross section with both activation and on-line gamma-detection methods at unprecedented low energies. In this paper the results obtained with the activation method are summarized. The results are compared with previous activation experiments and the zero energy extrapolated astrophysical S factor is determined using different theoretical models.

  8. Lunae Planum

    Science.gov (United States)

    2002-01-01

    (Released 24 June 2002) The Science This image is within a region called Lunae Planum, near 27.3N, 75.3W. This is a region west of the Viking 1 landing site that marks the transition between the Tharsis rise, a giant volcanic complex, and the northern lowland plains. The topographically high regions display numerous graben, signs of significant amounts of crustal deformation. The low areas display signs of resurfacing, including an unusual unit that appears to 'lap' onto the base of the uplands. This scarp follows the transition between the high and low areas throughout much of the image. It is not clear what caused these deposits, but a likely candidate is ice, which is suspected to have played a major role in the surface morphology of the fretted terrains and many features within the northern lowlands. The Story Lunae Planum was named after the Roman moon goddess Luna, who in ancient stories ruled over the night just as her counterpart, the sun god Sol, ruled over the day (a 'sol' is, in fact, the word used for a Martian day). Wearing the symbol of the crescent moon upon her head, Luna was known to ride on chariot pulled by two powerful horses. If the fictional Luna ever rode over the Martian plain named for her, she would find the terrain fairly rough going. You might say that she'd face a large number of 'ruts' on a geologic scale. That's because Lunae Planum marks the transition between the high Tharsis rise , a giant volcanic bulge on Mars, and the northern lowland plains. In this region, there are many signs of significant crustal deformation. Look for the dropped blocks of terrain called 'graben' on the higher surfaces in this image. Graben are created when tectonic forces tear apart the terrain, leaving long, large 'ruts' on the surface. We find graben on Earth too (think of Death Valley, the lowest dry land in the United States, or of the Jordan Dead Sea depression). Much more exciting than these depressions is the thin ridge that seems to lap up against

  9. Sub Luna

    DEFF Research Database (Denmark)

    Rosenløv, Jesper

     Afhandlingen, Sub luna- kosmologier, religion og videnskab i antikken, undersøger de antikke forestillinger om naturens og universets indretning samt menneskets placering i verden således som dette kommer til udtryk i de kosmologiske teorier, der formuleredes i den antikke videnskabelige eller...... forestillinger indtog i de antikke kosmologier og i forlængelse heraf en klarlægning af forholdet mellem religion og det, der kunne kaldes antik naturlære eller naturfilosofi.  Undersøgelsen omfatter den græsk-romerske verden i perioden fra førsokratikerne til mellemplatonikerne). Kildematerialet begrænses til...

  10. An actively vetoed Clover gamma-detector for nuclear astrophysics at LUNA

    CERN Document Server

    Szucs, T; Broggini, C; Caciolli, A; Confortola, F; Corvisiero, P; Elekes, Z; Formicola, A; Fulop, Zs; Gervino, G; Guglielmetti, A; Gustavino, C; Gyurky, Gy; Imbriani, G; Junker, M; Lemut, A; Marta, M; Mazzocchi, C; Menegazzo, R; Prati, P; Roca, V; Rolfs, C; Alvarez, C Rossi; Somorjai, E; Straniero, O; Strieder, F; Terrasi, F; Trautvetter, H P

    2010-01-01

    An escape-suppressed, composite high-purity germanium detector of the Clover type has been installed at the Laboratory for Underground Nuclear Astrophysics (LUNA) facility, deep underground in the Gran Sasso Laboratory, Italy. The laboratory gamma-ray background of the Clover detector has been studied underground at LUNA and, for comparison, also in an overground laboratory. Spectra have been recorded both for the single segments and for the virtual detector formed by online addition of all four segments. The effect of the escape-suppression shield has been studied as well. Despite their generally higher intrinsic background, escape-suppressed detectors are found to be well suited for underground nuclear astrophysics studies. As an example for the advantage of using a composite detector deep underground, the weak ground state branching of the Ep = 223 keV resonance in the 24Mg(p,gamma)25Al reaction is determined with improved precision.

  11. The LUNA facility at the National Laboratory of Gran Sasso: recent results and future activities

    CERN Document Server

    Prati, P; Broggini, C; Campajola, L; Corvisiero, P; D'Alessandro, A; Dessalvi, M; D'Onofrio, A; Fubini, S; Gervino, G; Gialanella, L; Greife, U; Guglielmetti, A; Gustavino, C; Junker, M; Ordine, A; Roca, V; Rolfs, C; Romano, M; Schuemann, F; Strieder, F; Terrasi, F; Trautvetter, H P; Zavatarelli, S

    1999-01-01

    The LUNA Collaboration has recently completed the first measurement of the sup 3 He( sup 3 He,2p) sup 4 He reaction in the Gamow peak region. A new phase, based on a new, 400 kV accelerator, has started and it is aimed to the study, at very low energy, of other relevant reactions of the p-p chain and of the CNO cycle. Measurements of electron screening effects are also planned.

  12. TABASCO: A single molecule, base-pair resolved gene expression simulator

    Directory of Open Access Journals (Sweden)

    Endy Drew

    2007-12-01

    Full Text Available Abstract Background Experimental studies of gene expression have identified some of the individual molecular components and elementary reactions that comprise and control cellular behavior. Given our current understanding of gene expression, and the goals of biotechnology research, both scientists and engineers would benefit from detailed simulators that can explicitly compute genome-wide expression levels as a function of individual molecular events, including the activities and interactions of molecules on DNA at single base pair resolution. However, for practical reasons including computational tractability, available simulators have not been able to represent genome-scale models of gene expression at this level of detail. Results Here we develop a simulator, TABASCO http://openwetware.org/wiki/TABASCO, which enables the precise representation of individual molecules and events in gene expression for genome-scale systems. We use a single molecule computational engine to track individual molecules interacting with and along nucleic acid polymers at single base resolution. Tabasco uses logical rules to automatically update and delimit the set of species and reactions that comprise a system during simulation, thereby avoiding the need for a priori specification of all possible combinations of molecules and reaction events. We confirm that single molecule, base-pair resolved simulation using TABASCO (Tabasco can accurately compute gene expression dynamics and, moving beyond previous simulators, provide for the direct representation of intermolecular events such as polymerase collisions and promoter occlusion. We demonstrate the computational capacity of Tabasco by simulating the entirety of gene expression during bacteriophage T7 infection; for reference, the 39,937 base pair T7 genome encodes 56 genes that are transcribed by two types of RNA polymerases active across 22 promoters. Conclusion Tabasco enables genome-scale simulation of

  13. pablo s luna-lozano

    Indian Academy of Sciences (India)

    PABLO S LUNA-LOZANO. Articles written in Sadhana. Volume 41 Issue 8 August 2016 pp 847-853. Digital architecture for a piecewise-linear arbitrary-waveform generator · VICTOR M JIMENEZ-FERNANDEZ HECTOR VAZQUEZ-LEAL PABLO S LUNA-LOZANO J L VAZQUEZ-BELTRAN G GARCIA-SANTIAGO E VALDES- ...

  14. Coastal vulnerability index for the Tabasco State coast, Mexico

    Directory of Open Access Journals (Sweden)

    Juan Carlos Nuñez Gómez

    2016-11-01

    of the major lagoon system in the State of Tabasco, the Carmen-Pajonal-Machona and Mecoacan lagoons; being the last one the most vulnerable of all. It is worth pointing out that this zone is located within the influence zone of the Dos Bocas port where an intense anthropogenic activity occurs. It is also important to point out that this study is one of the first approaches to the estimation of coastal vulnerability in Mexico. The implementation and application of this model of coastal vulnerability evaluation are significant given the spatial scale of the study and that this is the first time that these variables have been collected for the state of Tabasco. Our results might inform decision-making processes on the proper management of the Tabasco coastline, thus benefiting the local communities.

  15. LUNA: Status and prospects

    Science.gov (United States)

    Broggini, C.; Bemmerer, D.; Caciolli, A.; Trezzi, D.

    2018-01-01

    The essential ingredients of nuclear astrophysics are the thermonuclear reactions which shape the life and death of stars and which are responsible for the synthesis of the chemical elements in the Universe. Deep underground in the Gran Sasso Laboratory the cross sections of the key reactions responsible for the hydrogen burning in stars have been measured with two accelerators of 50 and 400 kV voltage right down to the energies of astrophysical interest. As a matter of fact, the main advantage of the underground laboratory is the reduction of the background. Such a reduction has allowed, for the first time, to measure relevant cross sections at the Gamow energy. The qualifying features of underground nuclear astrophysics are exhaustively reviewed before discussing the current LUNA program which is mainly devoted to the study of the Big-Bang nucleosynthesis and of the synthesis of the light elements in AGB stars and classical novae. The main results obtained during the study of reactions relevant to the Sun are also reviewed and their influence on our understanding of the properties of the neutrino, of the Sun and of the Universe itself is discussed. Finally, the future of LUNA during the next decade is outlined. It will be mainly focused on the study of the nuclear burning stages after hydrogen burning: helium and carbon burning. All this will be accomplished thanks to a new 3.5 MV accelerator able to deliver high current beams of proton, helium and carbon which will start running under Gran Sasso in 2019. In particular, we will discuss the first phase of the scientific case of the 3.5 MV accelerator focused on the study of 12C+12C and of the two reactions which generate free neutrons inside stars: 13C(α,n)16O and 22Ne(α,n)25Mg.

  16. 78 FR 49121 - Safety Zone; Luna Pier Fireworks, Luna Pier, MI

    Science.gov (United States)

    2013-08-13

    ... SECURITY Coast Guard 33 CFR Part 165 Safety Zone; Luna Pier Fireworks, Luna Pier, MI AGENCY: Coast Guard... zone for the Luna Pier Fireworks Show, Luna Pier, MI, from 9:25 p.m. until 10:25 p.m. on August 24... waters of Lake Erie within a 300-yard radius of the fireworks launch site at the Clyde E. Evens Municipal...

  17. Eva Luna: Writing as History

    Directory of Open Access Journals (Sweden)

    Lynne Diamond-Nigh

    1995-01-01

    Full Text Available The Bildungsroman of Eva Luna's development as a writer reflects—in a somewhat fragmented manner—important developments in Latin American literary history. Her personal quest was paralleled by an aesthetic quest, manifested in the trying on and taking off of various genres, literary movements and myths characteristic of Latin America; she even goes so far as to allude explicitly to specific authors and their individual works. Although some of these are simply lightheartedly parodied, others are reworked and reinterpreted in the light of the feminist enterprise of the past twenty-five years. Eva Luna transgresses fundamentally by having an intellectually strong, sexual, nurturing, very feminine protagonist, setting up an initial rupture with the dichotomy so clearly demarcated by Octavio Paz between "the mother and the whore." Four primary categories suggest themselves: myth and the mythic consciousness; magical realism; Boom writers; and then a miscellaneous grouping that subsumes a host of other significant literatures and literary themes: the picaresque, the neo-romantic, novels of the dictators, the ever-present conflict between civilization and barbarism, and testimonial literature.

  18. Luna

    OpenAIRE

    Ávila Calmaestra, Lourdes; González Molina, Marta; Monlleó Flores, Paula; Ruoz Soldevila, Tiffany

    2017-01-01

    Treball Final de Grau en Comunicació Audiovisual. Codi: CA0932. Curs acadèmic: 2016-2017 El presente proyecto forma parte del Trabajo de Fin de Grado que consiste en una producción audiovisual específicamente en un videoclip titulado ‘‘Luna’’. El videoclip tiene una duración de 3’26’’. La canción es de estilo pop latino y la música/letra en castellano han sido compuestas por Roberto Mousiño, profesor de piano de una de las integrantes del grupo. Los arreglos los ha realizado Jo...

  19. Prevalencia de desnutrición en menores de cinco años de Tabasco Malnutrition prevalence in children under 5 years old in Tabasco, Mexico

    Directory of Open Access Journals (Sweden)

    Lucio G. Lastra-Escudero

    1998-09-01

    Full Text Available Objetivo. Evaluar la prevalencia de desnutrición que se presentó en niños tabasqueños menores de cinco años en 1996, y su evolución entre 1991 y 1996. Material y métodos. Se realizó un estudio de corte transversal que incluyó a 1 256 niños de 593 comunidades (31 urbanas y 562 rurales de los 17 municipios de Tabasco. Resultados. El indicador peso/edad registró 41% de prevalencia de desnutrición, distribuida en leve (26.12%, moderada (12.62% y severa (2.39%. En niños de entre 1 y 5 años la prevalencia de desnutrición fue de 45%. Conclusiones. De 1991 a 1996 la cifra de niños con desnutrición ha disminuido proporcionalmente al incremento de la nutrición normal. Asimismo, han disminuido de seis a cuatro los municipios con indicadores críticos de desnutrición, con base en las acciones del sector salud en el estado de Tabasco.Objective. To evaluate malnutrition prevalence in children under five years-old in Tabasco, Mexico, during 1996, and their evolution in 1991-1996. Material and methods. A cross-sectional study, including 1 256 children under five years-old in 593 communities (31 urban and 562 rural from 17 sanitary districts. Results. The weight/age indicator for malnutrition in children under five years old showed 59% of children had normal nutrition and 41% with malnutrition, distributed as follows: 26.12% slight, 12.62% moderate and 2.39% severe. In children between 1-5 years old, malnutrition prevalence was 45%. Conclusions. The number of children with malnutrition in Tabasco during the study period (1991-1996 has decreased in proportion to the increase of those with normal nutrition. Based on the health system activities, the number of health districts with critical malnutrition indicators decreased from 6 to 4.

  20. [Avifauna in silvopastoral systems in the Mesoamerican Biological Corridor, Tabasco, México].

    Science.gov (United States)

    González-Valdivia, Noel; Barba-Macías, Everardo; Hernández-Daumás, Salvador; Ochoa-Gaona, Susana

    2014-09-01

    Silvopastoral systems support local ecological and economical features as they enhance conservation of floral and faunal communities. As other animal communities, avifauna may be a good representative of habitat alterations, both as the species and functional levels. In order to attend the initiative of Mesoamerican Biological Corridor initiative (CBM) in the state of Tabasco, we studied the diversity of birds in two silvopastoral systems: scattered trees in pastures (ADP), and trees in boundary-hedgerows (AL). For this, we applied the fixed radius counting point method in three priority sites in Tabasco's CBM during the dry and wet season of 2011, and a total of 56, 60 and 62 points were evaluated in Huimanguillo, Tenosique and Tacotalpa, respectively. We observed 2 084 individuals of 154 species (79-89% of expected diversity) and 36 bird families. We detected 92, 87 and 85 species in Huimanguillo, Tenosique and Tacotalpa, respectively, including 35 protected species, of which 23, 19 and 16 in each locality, respectively. All sites showed high diversity (H' ≥ 3.20), low species dominance (D ≥ 0.08) and high equitability (J ≥ 0.77). Species composition showed differences between sites, being most similar Tacotalpa and Tenosique. Ten species were considered characteristic for sites. Although the silvopastoral system did contain protected species, the low diversity and the early successional character of the arboreal components were not attractive to frugivorous bird species. Diversification with native trees can improve the systems to create a complementary habitat and to increase landscape connectivity. The management of silvopastoral practices on cattle dominated landscapes in Tabasco could improve its ecological quality, and thus achieve the CBM's objectives ofbiodiversity conservation combined with human economic activities.

  1. Como una luna en el agua [Score

    Directory of Open Access Journals (Sweden)

    Francisco del Pino

    2014-12-01

    Full Text Available The title of the solo piano piece Como una luna en el agua, composed between June and July of 2014, refers to the end of the seventh chapter of the novel Rayuela (Hopscotch by the Argentine writer Julio Cortázar, in which an allegorical description of a kiss takes the form of a prose poem.

  2. A Proposed Activity for a Meaningful Learning about the Moon Phases. (Breton Title: Uma Proposta de Atividade Para a Aprendizagem Significativa sobre as Fases da Lua.) Una Actividad Propuesta Para EL Aprendizaje Significativo Acerca de Las Fases de la Luna

    Science.gov (United States)

    Martins, Bruno Andrade; Langhi, Rodolfo

    2012-12-01

    This paper presents one of the concepts of Astronomy and its consequent failure in teaching this topic in high school, even when the official documents point out the necessity of Astronomy teaching at this school level. Among the spontaneous conceptions in Astronomy that high school students carry with them, even after the end of the school, we emphasized in this research the Moon phases. The development of different strategies in relation to traditional methods, aimed to teaching-learning process on this topic was considered in this study. These strategies were devised based on the reference frame of the Meaningful Learning, as elaborated by Ausubel. The proposals presented here include the active participation of students in experimental activities and other didactic activities, for their continuous evaluation during the process. These activities finished with a Comics elaboration about the Moon phases. Therefore, the objective of this paper is to present a proposal for differentiated teaching activity about Moon phases supported by the theoretical principles of Meaningful Learning at Physics classes. Este texto foca um dos conteúdos de Astronomia e a consequente falha no ensino deste tema no ensino médio, apesar de os documentos oficiais apresentarem a necessidade de se trabalhar a Astronomia neste nível de ensino. Dentre as concepções alternativas em Astronomia que os alunos do ensino médio carregam consigo, mesmo após o término dos estudos, destacamos, nesta pesquisa, o fenômeno das fases da Lua. O desenvolvimento de estratégias diferenciadas em relação ao ensino tradicional, visando o processo de ensino-aprendizagem sobre este tema, foi contemplado neste trabalho como um dos resultados obtidos sob a luz dos referenciais da aprendizagem significativa, fundamentados em Ausubel. Segundo a proposta aqui apresentada, a participação ativa dos alunos na execução de uma atividade experimental e outras atividades didáticas, que visam sua cont

  3. ADRON Instrument for Luna-Resource and Luna-Glob Missions

    Science.gov (United States)

    Golovin, D.; Mitrofanov, I.; Barmakov, Y.; Bogolubov, E.; Litvak, M.; Sanin, A.; Kozyrev, A.; Malakhov, A.; Mokrousov, M.; Schatzkij, V.; Smirnov, G.; Ryzhkov, V.; Kurdumov, I.; Shvetsov, V.; Tretyakov, V.; Varenikov, A.; Vostrukhin, A.

    2012-04-01

    The interest to Moon investigations was increasing last decade. Many scientific and exploration missions were developed and about ten spacecrafts reached our nearest cosmic neighbor for detailed studying. Russian instrument LEND (Lunar Exploration Neutron Detector) received new interesting data about global lunar surface and distribution of hydrogen (water) enriched regions near poles in particular using collimation technique. Two of these regions are now landing sites of Russian-Indian project Luna-Resource and Russian lander Luna-Glob with planned launches in 2014 and 2015 respectively. One of scientific instruments onboard landers of both missions is ADRON (Active Detector of gamma Rays and Neutrons). The main tasks of the experiment are: 1) Definition of composition of the soil in the landing site; 2) Hydrogen content and distribution along depth; 3) Radiation background measurement; 4) Registering of Gamma-Ray Bursts. ADRON instrument is based on available heritage of design of DAN (MSL 2011, NASA) and MGNS (BepiColombo 2014, ESA). The concept ADRON is based on is the well-known method of nuclear well neutron logging for geological applications when detectors measure flux of scattered and moderated neutrons emitted by generator. Using scintillator one can detect spectrum of gamma-rays from soil and the lines intensities of this spectrum will indicate amount of a corresponding element in the subsurface up to 1 m depth during experiment on lunar surface. Instrument consists of two separate units: Pulse Neutron Generator (PNG) and Detectors and Electronic Unit (DEU). DEU (weight 3.8 kg, size 260×217×127 mm), besides of electronic for instrument control, contains LaBr3 crystal for measuring spectra of gamma rays and He3 proportional counters to detect thermal and epithermal neutrons. Fast electronics allow to get time profiles of gamma and neutrons flux with time resolution of up to 1 microsecond. PNG unit (weight 2.6 kg, size 331×125×45 mm) is connected to

  4. Un asteroide proveniente de la Luna

    Science.gov (United States)

    Tancredi, G.

    El descubrimiento de un débil objeto en movimiento por el telescopio Spacewatch (un instrumento dedicado a la búsqueda de Asteroides Cercanos a la Tierra) en 1991, ha generado una gran controversia en la comunidad planetaria. El objeto, denominado 1991 VG, tiene elementos orbitales llamativamente similares a los de la Tierra, lo que ha llevado a B. G. Marsden a aventurar:``El objeto podría ser una nave espacial en retorno (IAUC 5387)". Luego de analizar las características dinámicas de 1991 VG y las diferentes hipótesis sobre su origen, favorecemos la alternativa de que el objeto es un gran fragmento de material eyectado de la Luna durante un reciente impacto (en las últimas decenas de miles de años). El hallazgo en 1983 en la Antártida de meteoritos con composición tipo lunar, confirma la posibilidad de que material de la superficie del satélite puede ser eyectado a velocidades superiores a la de escape del sistema Tierra-Luna y alcance órbitas heliocéntricas. Los elementos orbitales de 1991 VG corresponden a los valores alcanzados por partículas que apenas escapan de la gravedad lunar y entran en órbitas heliocéntricas a través del punto Lagrangiano exterior del sistema Tierra-Sol.

  5. Species, functional groups, and habitat preferences of birds in five agroforestry classes in Tabasco, Mexico

    NARCIS (Netherlands)

    Wal, van der J.C.; Peña-Álvarez, B.; Arriaga-Weiss, S.L.; Hernández-Daumás, S.

    2012-01-01

    We studied species, functional groups, and habitat preferences of birds in five classes of agroforestry systems: agroforests, animal agroforestry, linear agroforestry, sequential agroforestry, and crops under tree cover in Tabasco, Mexico. Sampling sites were >2 km from natural forest fragments.

  6. Sindrome de fragilidad en adultos mayores no institucionalizados de Emiliano Zapata, Tabasco, Mexico

    National Research Council Canada - National Science Library

    Alonso- Benites, Janyf Rosalia; Zavala-Gonzalez, Marco Antonio; Quevedo-Tejero, Elsy del Carmen

    2011-01-01

    Objetivo. Determinar la prevalencia del sindrome de fragilidad y los factores asociados a este, en adultos mayores no institucionalizados de Emiliano Zapata, Tabasco, Mexico, en el ano 2008. Material y metodos...

  7. Determination of rare-earth elements in Luna 16 regolith sample by chemical spectral method

    Science.gov (United States)

    Stroganova, N. S.; Ryabukhin, V. A.; Laktinova, N. V.; Ageyeva, L. V.; Galkina, I. P.; Gatinskaya, N. G.; Yermakov, A. N.; Karyakin, A. V.

    1974-01-01

    An analysis was made of regolith from layer A of the Luna 16 sample for rare earth elements, by a chemical spectral method. Chemical and ion exchange concentrations were used to determine the content of 12 elements and Y at the level 0.001 to 0.0001 percent with 10 to 15 percent reproducibility of the emission determination. Results within the limits of reproducibility agree with data obtained by mass spectra, activation, and X-ray fluorescent methods.

  8. Anotaciones de la ecología alimentaria de monos aulladores negros en un fragmento con condiciones de hacinamiento (Balancán, Tabasco, México

    Directory of Open Access Journals (Sweden)

    John Aristizábal-Borja

    2011-08-01

    Full Text Available Annotations on the feeding ecology of black howler monkeys in an overcrowded fragment in Balancán, Tabasco, México. Wedescribed the feeding behavior of Central-American black howler monkey (Alouatta pigra in a fragment of less than one hectare ofhumid evergreen forest surrounded by grassland for livestock use, isolated trees and mango orchards, in the region of Balancán (Tabasco,México. Objective: To record the diet and activity of black howler monkeys in crowded conditions during the wettest month in Balancán(Tabasco, México. Methods and methods: The behavioral observations (81 h were made using the focal animal methodology withan A. pigra troop made up of three individuals (1 adult male, 1 adult female and 1 infant. Results: Feeding time represented 15.97%,rest 78% and locomotion 4.57% of total time. In the study area we recorded 14 plant species, with 10 being consumed by howlermonkeys. 55% of feeding time was devoted to the consumption of fruits, 27% to leaves, 17% to stems, and 1% to sprouts. Spondiasmombin was the tree species most consumed, with 61% of the time invested on it. Conclusion: Like other studies, we confirmed thefrugivore-folivore feeding tendency of the genus Alouatta. We provide information on the black howler monkey flexibility to live andmaintain themselves in extreme perturbation conditions, where their habitat is 0.1 ha with few tree species to use, forcing individualsto move around the ground.

  9. Lunar Solar Origins Exploration (LunaSOX)

    Science.gov (United States)

    Cooper, John F.; King, Joseph H.; Papitashvili, Natasha; Lipatov, Alexander S.; Sittler, Edward C.; Hartle, Richard E.

    2011-01-01

    The Moon offers a unique vantage point from which to investigate the Sun and its interaction via the solar wind magnetic fields, plasma, and energetic particles with the geospace system including the Moon itself. The lunar surface and exosphere provide in part a record of solar coronal plasma material input and resultant space weathering over billions of years. The structure and dynamics of solar wind interactions with the Moon provide an accessible near-Earth laboratory environment for study of general solar wind interactions with the vast multitude of airless asteroidal bodies of the inner solar system. Spacecraft in lunar orbit have the often simultaneous opportunity, except when in the Earth's magnetosphere, to make in-situ compositional measurements of the solar wind plasma and to carry out remote observations from the Moon of the solar corona, potentially enabled by lunar limb occultation of the solar disk. The LunaSOX project at NASA Goddard Space Flight Center is addressing these heliophysical science objectives from and of the Moon with support from NASA's Lunar Advanced Science and Exploration Research (LASER) program: (1) specify history of solar wind parameters at and sunward of the Moon through enhanced access (http://lunasox.gsfc.nasa.gov/) to legacy and operational mission data products from the Apollo era to the present, (2) model field and plasma interactions with the lunar surface, exosphere, and wake, as constrained by the available data, through hybrid kinetic code simulations, and (3) advance mission concepts for heliophysics from and of the Moon.

  10. Organochlorine pesticide level differences among female inhabitants from Veracruz, Puebla and Tabasco, Mexico.

    Science.gov (United States)

    Waliszewski, Stefan M; Caba, M; Saldarriaga-Noreña, H; Martínez, A J; Meza, E; Valencia Quintana, R; Zepeda, R

    2014-08-01

    Organochlorine pesticides have been used in Mexico in malaria control programs and against ectoparasites. The objective of this study was to compare the levels of organochlorine pesticides: HCB, α-β-γ-HCH, pp'-DDE, op'-DDT and pp'-DDT in adipose tissue of female inhabitants from three Mexican states: Veracruz, Puebla and Tabasco. Data analyses indicated higher β-HCH levels in Puebla inhabitants. When comparing the mean values of the pp'-DDE concentrations among the three states, no statistically significant differences were noted. A trend of increasing concentrations of op'-DDT from Veracruz to Puebla and Tabasco was observed. Significantly higher pp'-DDT concentrations in Veracruz as compared to Puebla and Tabasco were determined. Using factorial analysis of three age categories (>30, 31-50, <51) organochlorine pesticide concentrations increases with age of participants, indicating time of exposure as a principal factor of organochlorine pesticides accumulation in adipose tissue.

  11. Perfil gerontológico del adulto mayor en tabasco, méxico

    OpenAIRE

    Guerrero Pérez, Ramiro; Quevedo Tejero, Elsy Del Carmen; García Rochín, Ramón; Zavala González, Marco Antonio

    2012-01-01

    Objetivo Definir el perfil gerontológico de los adultos mayores en Tabasco, México. Material y métodos Estudio observacional, retrospectivo, transversal, descriptivo. Universo: 35 745 adultos mayores afiliados al Instituto Nacional de las Personas Adultas Mayores (INAPAM), Delegación Tabasco. Muestra: no se tomó. Criterios de selección: adultos mayores que se afiliaron al INAPAM durante el período Enero/2004-Diciembre/2006. Variables: socio demográficas, sanitarias y de preferencias personale...

  12. Diversidad morfológica de chiles (Capsicum spp.) de Tabasco, México

    OpenAIRE

    Pérez Castañeda, Laura Maryela; Castañón Nájera, Guillermo; Mayek Pérez, Netzahualcoyotl

    2008-01-01

    El cultivo del chile (Capsicum spp.) es importante en la historia, tradición y cultura de México y es, además, un producto agrícola con alta demanda mundial. A pesar de esto, el chile se ha estudiado poco en el estado de Tabasco. En este trabajo se describe la diversidad morfológica in situ, con base en dieciocho características morfológicas de planta, flor y fruto de cuarenta poblaciones de Capsicum entre las que se encuentran nativas de Tabasco e introducidas. De ...

  13. Identity Theft: Gentrification, Latinidad, and American Girl Marisol Luna

    Science.gov (United States)

    Rudolph, Jennifer Domino

    2009-01-01

    Released by Mattel in 2005, American Girl doll Marisol Luna quickly provoked controversy. The doll's accompanying narrative depicts her Chicago neighborhood of Pilsen as "dangerous" and recounts her family's move to the suburbs. Pilsen, located just south and west of downtown Chicago, has a long history as a Mexican (im)migrant port of…

  14. Nuclear Astrophysics in underground laboratories: the LUNA experiment

    Science.gov (United States)

    2017-11-01

    One of the main ingredients of nuclear astrophysics is the knowledge of the thermonuclear reactions responsible for powering the stellar engine and for the synthesis of the chemical elements. At astrophysical energies the cross section of nuclear processes is extremely reduced by the effect of the Coulomb barrier. The low value of cross sections prevents their measurement at stellar energies on Earth surface and often extrapolations are needed. The Laboratory for Underground Nuclear Astrophysics (LUNA) is placed under the Gran Sasso mountain and thanks to the cosmic-ray background reduction provided by its position can investigate cross sections at energies close to the Gamow peak in stellar scenarios. Many crucial reactions involved in hydrogen burning has been measured directly at astrophysical energies with both the LUNA-50kV and the LUNA-400kV accelerators, and this intense work will continue with the installation of a MV machine able to explore helium and carbon burnings. Based on this progress, currently there are efforts in several countries to construct new underground accelerators. In this talk, the typical techniques adopted in underground nuclear astrophysics will be described and the most relevant results achieved by LUNA will be reviewed. The exciting science that can be probed with the new facilities will be highlighted.

  15. [Histology of reproductive cycle of tropical gar Atractosteus tropicus females (Lepisosteiformes: Lepisosteidae) in Tabasco, Mexico].

    Science.gov (United States)

    Méndez-Marin, Otilio; Hernández Franyutti, Arlette Amalia; Alvarez-González, Carlos Alfonso; Contreras-Sánchez, Wilfrido Miguel; Uribe Aranzábal, Mari Carmen

    2012-12-01

    In Southeast Mexico, A. tropicus is a species with great ecological, economic, cultural and aquaculture value, however wild populations have diminished due to diverse anthropological causes. The objective of this study was to characterize the reproductive cycle of A. tropicus, with a description of complete gonad structure and the changes in germinal and somatic elements during oogenesis, for better management and use of this species. Six sexually mature females (N=72) were captured monthly with drag nets during one year cycle (October 2003-October 2004) in wild populations of Pomposu lagoon, municipality of Jalpa de Mendez, Tabasco, Mexico. Females were sacrificed by decapitation and the ovaries were processed by standard histological methods; the diameter of 10-20 oocytes taken at random was determined in different stages of development. Gonadosmatic index (GSI), gonadal volume (gV) and follicule diameter (fD) were determined monthly. Among results we could determine eight oogenesis developmental stages: I: chromatin nucleolus stage, II: early perinucleolus stage, III: mid perinucleolus stage, IV: advanced perinucleolus stage, V: early vitellogenesis stage, VI: mid vitellogenesis stage, VII) advanced vitellogenesis stage and VIII: final maturation stage. The reproductive cycle could be divided in four phases: 1: proliferative phase, II: initial maturation phase, III: late maturation phase, IV: regressing phase. Analysis of the data obtained from the IGS, gV and fD values, oogenesis stages and reproductive phases, indicate that in December previtellogenesis phase restarts, from March through July yolk deposition (vitellogenesis) occurs, and from August to November the maximum reproductive activity takes place. Contrasting this pattern with local environmental factors such as temperature and precipitation, we suggested that these may serve as an environmental activator in the development of oogenesis and spawning of this species.

  16. [Population fluctuation of Xyleborus ferrugineus and X. affinis (Coleoptera: Curculionidae) in ecosystems of Tabasco, Mexico].

    Science.gov (United States)

    Rangel, Ricardo; Pérez, Manuel; Sánchez, Saúl; Capello, Silvia

    2012-12-01

    The Scolytinae insects are commonly known as bark or ambrosial beetles because of their feeding habits. Among them, some species restrict their reproductive activity to a host plant or a small number of them, whereas others are highly polyphagous. In order to evaluate the population dynamics of Scolytinae species, populations of Xyleborusferrugineus and X. affinis in ecosystems from Tabasco, Mexico were studied. The study was carried out from November 2010-July 2011, February 2010-January 2011 and 2007. The trapping methods used were alcohol traps, light traps and direct capture on their host plants. A total of 688 specimens ofX ferrugineus and 3 911 specimens of X. affinis were collected. The population dynamics of X. ferrugineus showed low size population in the studied ecosystems, without any marked seasonality. The highest population sizes were recorded both in dry season (March-May) and rainy season (September-December). Unlike the populations of X. ferrugineus, those of X. affinis were more abundant and showed the highest peaks during the rainy seasons (except in May at the Botanical Garden "José Narciso Rovisora"). Alcohol and light traps can be complementary methods for monitoring the populations of these types of insects. They occur most of the year and theirs population dynamics depends on food resources availability as well as environmental factors such as temperature and humidity. Judging by the observed abundance it is suggested that X. affinis has been adapted and exploited resources in a better way than X. ferrugineus in those ecosystems. Correlations between abundance and climatic factors had both positive and negative values. The results reflect the behavior of populations. However, a detail assessment of the biological and abiotic factors that influence the fluctuations of these insects is required.

  17. xLuna - D emonstrator on ESA Mars Rover

    Science.gov (United States)

    Braga, P.; Henriques, L.; Carvalho, B.; Chevalley, P.; Zulianello, M.

    2008-08-01

    There is a significant gap between the services offered by existing space qualified Real-Time Operating Systems (RTOS) and those required by the most demanding future space applications. New requirements for autonomy, terrain mapping and navigation, Simultaneous Location and Mapping (SLAM), improvement of the throughput of science tasks, all demand high level services such as file systems or POSIX compliant interfaces. xLuna is an operating system that aims fulfilling these new requirements. Besides providing the typical services that of an RTOS (tasks and interrupts management, timers, message queues, etc), it also includes most of the features available in modern general-purpose operating systems, such as Linux. This paper describes a case study that proposes to demonstrate the usage of xLuna on board a rover currently in use for the development of algorithms in preparation of a mission to Mars.

  18. [Scolitids (Coleoptera: Scolytidae) associated to the cocoa agroecosystem in Tabasco, Mexico].

    Science.gov (United States)

    Pérez-De La Cruz, Manuel; Equihua-Martínez, Armando; Romero-Nápoles, Jesus; Sánchez-Soto, Saúl; García-López, Eustolia; Bravo-Mojica, Hiram

    2009-01-01

    The Scolytidae fauna associated to the cacao agroecosystem in Tabasco, Mexico was studied during 2007. Adult insects were captured by using ethanol and light traps, and by direct collecting in their host plants. 3,192 specimens of 34 species belonging to 18 genera of Scolytidae were collected. Twenty-two species are new records for the State of Tabasco. The genera with more species were Xyleborus (6) and Hypothenemus (6). We conclude that the Scolytidae fauna associated to the cacao agroecosystem captured with the three trap systems are similar through the year of study. We also conclude that although the ethanol traps were more efficient, obtaining the highest species diversity, the use of other methods is important.

  19. Hip fracture in older adults: prevalence and costs in two hospitals. Tabasco. México. 2009

    OpenAIRE

    Quevedo-Tejero, Elsy del Carmen; División Académica de Ciencias de la Salud de la Universidad Juárez Autónoma de Tabasco. México. Médico, Maestra en Geriatría.; Zavala-González, Marco Antonio; División Académica de Ciencias de la Salud de la Universidad Juárez Autónoma de Tabasco. México. Médico, Maestro en Educación.; Hernández-Gamas, Arianna del Carmen; División Académica de Ciencias de la Salud de la Universidad Juárez Autónoma de Tabasco. México. Estudiante de Medicina Humana.; Hernández-Ortega, Hilda María; División Académica de Ciencias de la Salud de la Universidad Juárez Autónoma de Tabasco. México. Estudiante de Medicina Humana.

    2011-01-01

    Objectives. To determine hip fracture prevalence and direct healthcare costs in elderly users of the reference hospitals of the Mexican Institute of Social Insurance (IMSS by spanish initials) and Mexican Oils (PEMEX by spanish initials), from Villahermosa, Tabasco, Mexico, during 2009. Materials and methods. This is a cross-sectional study. The information was based on the registers of surgical interventions and institutional reports of the elderly inpatients who had a registered attention i...

  20. Luna-Glob project in the context of the past and present lunar ...

    Indian Academy of Sciences (India)

    The Russian Luna-Glob project has been conceived with a view to understand the origin of the Earth –Moon system.The objectives and main features of the Luna-Glob mission,which will mainly study the internal structure of the Moon by seismic instruments,are described in the context of the past and current program of ...

  1. Gnathostoma binucleatum (Spirurida: Gnathostomatidae en peces dulceacuícolas de Tabasco, México

    Directory of Open Access Journals (Sweden)

    Teiji Kifune

    2004-06-01

    Full Text Available La gnatostomiasis humana se adquiere al ingerir pescado de agua dulce crudo o insuficientemente cocido, infectado con larvas de tercer estadio avanzado (L3A de nemátodos del género Gnathostoma. En el sureste de Asia, este padecimiento tiene una importancia relativa; en México, se le considera un problema de salud pública emergente desde 1970, cuando fueron registrados los primeros casos. Hasta la fecha, no se han establecido con precisión los caracteres morfométricos para diferenciar las L3A de las tres especies del género distribuidas en este país. Recientemente, se registraron larvas del parásito en peces dulceacuícolas de los Pantanos de Centla, Tabasco, sin definir su identidad específica. El análisis de cuatro especies de peces de la misma localidad reveló que tres de ellos: Petenia splendida (n=58, Cichlasoma managuense (n=35 y Gobiomorus dormitor (n=9, resultaron positivas a la infección por Gnathostoma binucleatum. La identificación del parásito se obtuvo comparando la secuencia del espaciador interno 2 (ITS2 del ADN ribosomal del material de Tabasco, con secuencias disponibles en Genbank. Este trabajo constituye el primer registro de G. binucleatum en P. splendida y G. dormitor de Tabasco y la primera determinación a nivel específico del parásito en la localidadHuman gnathostomiasis is a food-born parasitic disease of relative importance in many countries in Southeast Asia. It is caused by several species of nematodes of the genus Gnathostoma. In Mexico is an emerging public health problem since 1970, when first cases were reported. Until today, larval morphometric characters that have been proposed to differentiate between the three species of Gnathostoma present in this country, are not satisfactory. Recently, the presence of advanced third-stage larvae AdvL 3 (infective form for humans in freshwater fishes from Pantanos de Centla, Tabasco, was recorded but their specific identity was not clarified. Examination of

  2. Emerico Luna, an anatomist and a fervid intellectual.

    Science.gov (United States)

    Gerbino, Aldo

    2004-01-01

    On 11 March 2004, the Section of Human Anatomy of Palermo was dedicated and registered to the anatomist Emerico Luna (Palermo 1882-1963) with a ceremony (moderated by Giovanni Zummo) with the participation of institutional personalities and Italian anatomists. Luna, who was an acute morphologist and a scholar of Riccardo Versari (1865-1943), was the continuator of Francesco Todaro's Anatomical School and occupied the Chair at the University of Palermo that had belonged to Levi since 1919. His wide histo-anatomical culture culminates in the collaboration to the "Trattato di Neurologia", the richly composed treatise by Bertelli (1931). Then his studies and his teaching reached to the Anatomia Clinica Regionale (1951). In charge of Histology and Normal Human Anatomy in 1920-21, he became a full professor and a master till 1952. He had so many students: among them Ignazio Fàzzari (1889-1986) who had the chair in the University of Florence, Alberto Monroy who had the charge of Compared Anatomy in the University of Palermo and Arcangelo Pasqualino from Marineo. Luna was co-founder and leader of the "Italian Society of Anatomy". He developed an intense research above all on the nervous system, the connective tissues, the arteries of the brain, and the experimental embryology, developing the radiological and clinical anatomy. He also dedicated himself to literature writing in 1953, among the scientific and literary works, a booklet titled Alla Fiera Delle Fantasie where he discuss the fantasy in a style that recall the literary evasion of the last period of crepuscolarism.

  3. On the origin of Luna 24 basalts and soils

    Science.gov (United States)

    Ryder, G.; Marvin, U. B.

    1978-01-01

    Analyses of fine-grained very low titanium (VLT) basalt from the Luna 24 drill core suggest that a single homogeneous magma is represented by the sample. In particular, the small variation in MgO contents of the fine-grained basalt, together with the tight clustering of the compositions of brown glasses (which may be pyroclastic equivalents of the VLT basalt), provides evidence for the single-magma hypothesis. The high-Mg component in the soil samples, though not obviously explainable in petrographic terms, may be derived from material similar to olivine vitrophyre and its degraded products, or from some other high-Mg VLT basalt.

  4. Eclissi! Quando Sole e Luna danno spettacolo in cielo

    CERN Document Server

    Bastoni, Marco

    2012-01-01

    Le eclissi di Sole e di Luna sono fra gli spettacoli più avvincenti della Natura; questo libro è una guida completa alla loro osservazione e spiega come cercare, vivere e fotografare questi eventi senza necessariamente essere astrofili esperti. Cosa posso osservare durante un’eclisse? Da dove? E quando? Un’accurata selezione delle 10 eclissi imperdibili da qui al 2050 chiude l’opera, aiutando il lettore nella pianificazione delle osservazioni. Preparate i bagagli, guardate l’eclisse e lasciatevi emozionare!

  5. Sol, Tierra y Luna. Movimientos relativos y sus consecuencias

    Directory of Open Access Journals (Sweden)

    Sebastián Cardenete García

    2011-01-01

    Full Text Available Cuando se pregunta a los estudiantes por la causa de las estaciones suelen responder: "en verano estamos más próximos al Sol y en invierno estamos más lejos del Sol". La persistencia de esta idea y el hecho de su generalización entre los estudiantes y muchos adultos me ha inducido a escribir este artículo, en el cual se trata de explicar, de una forma clara y simple, el motivo de este y otros fenómenos debidos al movimiento de la Luna alrededor de la Tierra y de ésta alrededor del Sol.

  6. Experiences in the construction and operation of a biodiesel pilot plant in Tabasco; Experiencias en la construccion y operacion de una planta piloto de biodiesel en Tabasco

    Energy Technology Data Exchange (ETDEWEB)

    Custodio Garcia, E; Cordova Gomez, Jose F.; Irineo Mijangos, Jose A.; Montiel Reyes, W.; Gutierrez Leon, Gustavo M. [Universidad Tecnologica de Tabasco, Tecnologia Ambiental (Mexico)

    2010-07-01

    Initiating the development of a project that has as final goal the construction of a plant at pilot level to produce bio combustible, represent always a challenge. First, for the little experience that we could have in the construction, and another one, related to the selection of the equipment or materials for its construction, since one must have quality standards in the materials and it tends to happen that in occasions they are not in the market because of its specialization. In this work the authors present their experiences in the design and construction of the first pilot plant for production of biodiesel in the state of Tabasco, as well as in the use of the bio-fuel in the buses and emergency generating units where the biodiesel has tried on. The pilot plant for biodiesel is designed to produce 400 liters per hour, each batch, has a storage capacity of 2400 liters and counts with a system of filters and washing tank with water to eliminate water and solid matters that are contaminating the process. For the biodiesel production the methoxide is used, that is a mixture of sodium hydroxide and methanol alcohol so that it reacts with the oil and forms the biodiesel. The plant is working with used vegetal oil as raw material, same that is collected from the hotels and restaurants of the zone. The critics have served to improve the process, because sometimes not everything has been written on the biodiesel. This work is a joint project between the union of the private initiative (DG Group) and the Universidad Tecnologica de Tabasco. [Spanish] El iniciarse en el desarrollo de un proyecto que tenga como final la construccion de una planta a nivel piloto para fabricar biocombustible, siempre representa un reto. Primero, por la poca experiencia que pudieramos tener en la construccion, y otra, en lo que es la seleccion del equipo o material para su construccion, ya que se debe contar con estandares de calidad en los materiales y suele suceder que en ocasiones no se

  7. Prevalencia de desnutrición en menores de cinco años de Tabasco Malnutrition prevalence in children under 5 years old in Tabasco, Mexico

    OpenAIRE

    Lucio G. Lastra-Escudero; Silvia G. Roldán-Fernández; Enrique Hernández-Martínez; Alma Patricia Hernández-Torres; Félix Gerardo Lechuga-Padrón

    1998-01-01

    Objetivo. Evaluar la prevalencia de desnutrición que se presentó en niños tabasqueños menores de cinco años en 1996, y su evolución entre 1991 y 1996. Material y métodos. Se realizó un estudio de corte transversal que incluyó a 1 256 niños de 593 comunidades (31 urbanas y 562 rurales) de los 17 municipios de Tabasco. Resultados. El indicador peso/edad registró 41% de prevalencia de desnutrición, distribuida en leve (26.12%), moderada (12.62%) y severa (2.39%). En niños de entre 1 y 5 años la ...

  8. Microstructural characterization of archaeological samples coming from La Venta park, Tabasco, Mexico; Caracterizacion microestructural de muestras arqueologicas procedentes del parque La Venta Tabasco, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Espinosa P, M.F.; Rodriguez L, V.; Martinez, G. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    1997-07-01

    The Olmec culture was the first meso american civilization it presents its main establishment at the Veracruz and Tabasco states in Mexico. Owing to in time and to the weathering factors of the region as warmth, acid rain and that great humidity existing in the environment among others that have been provoked great erosion and damage on the pre hispanic monuments. Through Sem technique it was achieved the microstructural characterization of materials which conform the samples that correspond to those monuments where fundamentally feldspars have been found. It was determined the elemental composition of samples through Emission dispersive X-ray diffraction technique, the crystalline phases existing in samples were determined mainly finding feldspars, so of this way it was corroborated those obtained results through Sem. The materials characterization that are part of these pre hispanic monuments of La Ve nta park is essential for its conservation minimizing so the damage to pre hispanic pieces. (Author)

  9. Frailty syndrome in no institutionalized older adults from Emiliano Zapata, Tabasco, Mexico)

    OpenAIRE

    Quevedo-Tejero, Elsy del Carmen; Zavala-González, Marco Antonio; Asociación Latinoamericana de Profesores de Medicina Familiar A.C.; Alonso-Benites, Janyf Rosalía; Universidad Juárez Autónoma de Tabasco

    2011-01-01

    Objective: To determine the frailty syndrome prevalence and the associated factors to it, in no institutionalized older adults from Emiliano Zapata, Tabasco, Mexico, in 2008.Material and methods: Design: cross-sectional. Universe: 2.375 older adults. Sample: randomized (p=0,9, q=0,1, Z=1,96, d=0,05) 94 older adults. Sampling: randomized simple. Inclusion criterions: any sex, without cognitive diseases of known diagnosis. Variables: socio-demographics, diseases, nutritional status, functionali...

  10. Las reservas territoriales en el ordenamiento urbano: Cárdenas, Tabasco

    Directory of Open Access Journals (Sweden)

    Adrián Guillermo Aguilar Martínez

    1982-01-01

    Full Text Available At the end of seventies were emitted, the Law of Human Settlements and the National Plan of Urban Development which represent the Mexican Urban Policy. For the first time was established the demarcation of territorial reserves for the future expansion of each urban settlement in the country. This paper analyzes the growth tendency of a small city in an oil producing region of the State of Tabasco; a methodological guide was prepared in order to determinates it´s territorial reserves and future urban growth until year 2000, subdivided in five year periods.

  11. Progreso temporal y manejo integrado de la moniliais [Moniliophthora roreri (Cif y Par.) Evans et al.] del cacao (Theobroma cacao) en Tabasco, México.

    OpenAIRE

    Torres de la Cruz, Magdiel

    2010-01-01

    El cacao (Theobroma cacao L.) es uno de los principales recursos agrícolas de Tabasco, México. En abril del 2005, se reportó la moniliasis (Moniliophthora roreri) del cacao en Tabasco; para 2007, la enfermedad había invadido todas las regiones productoras del estado, convirtiéndose en la principal limitante parasítica. En la presente investigación se estudió el progreso temporal de la moniliasis en Tabasco, se evaluó al azoxystrobin como agente curativo de M. roreri, y evaluó un programa de m...

  12. Origin and modal petrography of Luna 24 soils

    Science.gov (United States)

    Basu, A.; Mckay, D. S.; Fruland, R. M.

    1978-01-01

    Petrographic modal analyses of polished grain mounts of fractions in the 20 to 250 micron size range from Luna 24 soil samples are presented and used to infer the nature and relative contributions of source rocks. It is found that more than 90% of the identifiable rock fragments are mare basalts, with about 11% of the soil consisting of the crystalline form. Soil breccias, which make up nearly 10% of the soil, are found to be immature. Electron probe analysis of glass particles reveals principle clusters conforming to anorthosite, anorthositic gabbro and mare basalts. More than half of the soil is composed of monomineralic particles, with pyroxene as the most abundant mineral. It is concluded that 85% of the regolith is derived from local mare basalts and gabbros and about 10% is derived from early cumulates of local mare basalt magma. Highland sources are considered to contribute not more than 3% of the regolith.

  13. LUNA: low-flying UAV-based forest monitoring system

    Science.gov (United States)

    Keizer, Jan Jacob; Pereira, Luísa; Pinto, Glória; Alves, Artur; Barros, Antonio; Boogert, Frans-Joost; Cambra, Sílvia; de Jesus, Cláudia; Frankenbach, Silja; Mesquita, Raquel; Serôdio, João; Martins, José; Almendra, Ricardo

    2015-04-01

    The LUNA project is aiming to develop an information system for precision forestry and, in particular, the monitoring of eucalypt plantations that is first and foremost based on multi-spectral imagery acquired using low-flying uav's. The presentation will focus on the first phase of image acquisition, processing and analysis for a series of pot experiments addressing main threats for early-stage eucalypt plantations in Portugal, i.e. acute , chronic and cyclic hydric stress, nutrient stress, fungal infections and insect plague attacks. The imaging results will be compared with spectroscopic measurements as well as with eco-physiological and plant morphological measurements. Furthermore, the presentation will show initial results of the project's second phase, comprising field tests in existing eucalypt plantations in north-central Portugal.

  14. Soil macroinvertebrates' abundance and diversity in home gardens in Tabasco, Mexico, vary with soil texture, organic matter and vegetation cover

    NARCIS (Netherlands)

    Huerta, E.; Wal, van der J.C.

    2012-01-01

    We studied the composition of soil invertebrate communities and vegetation in 50 home gardens in the humid tropical lowlands of Tabasco, Mexico, located in five geomorphological regions. Five monoliths were made in each home garden and soil invertebrates were hand sorted, weighed and classified to

  15. [Transmission of cutaneous leishmaniasis associated with cacao (Theobroma cacao) plantations in Tabasco].

    Science.gov (United States)

    Carrada Figueroa, Georgina Del Carmen; Leal Ascencio, Víctor Javier; Jiménez Sastré, Alejandro; López Álvarez, Jorge

    2014-01-01

    Tabasco is the Mexican state that reported the highest number (37.4%) of patients with leishmaniasis during 1990-2011. Close to 90% of these patients lived in Chontalpa, where the municipality of Cunduacán accounted for the majority of the cases. One of the characteristics of this region is that houses are located within cacao plantations. To determine if cacao plantations are a risk factor for leishmaniasis transmission in locations of Cunduacán, Tabasco. We performed an analytical and retrospective study of 115 locations in Cunduacán, analyzing the number of localities with or without patients with leishmaniasis registered between 2000-2011 and, additionally, if they had cacao plantations, using a map where different crops were georeferenced. We measured the magnitude of the association (odds ratio, 95% CI). During the period 2000-2011, cases of leishmaniasis were reported in 77 (67.0%) Cunduacán locations, of these, 55 (71.4%) had cocoa plantations, five (6.5%) of banana, five (6.5%) of cane, and 12 (15.6%) had no crops georeferenced. We found that cocoa crops are a risk factor for the transmission of leishmaniasis (OR: 3.438; 95% CI: 1,526-7,742). The probability of transmission of leishmaniasis in areas with cocoa crops is greater than in communities without this crop.

  16. Prevalencia de desnutrición en menores de cinco años de Tabasco

    Directory of Open Access Journals (Sweden)

    Lastra-Escudero Lucio G.

    1998-01-01

    Full Text Available Objetivo. Evaluar la prevalencia de desnutrición que se presentó en niños tabasqueños menores de cinco años en 1996, y su evolución entre 1991 y 1996. Material y métodos. Se realizó un estudio de corte transversal que incluyó a 1 256 niños de 593 comunidades (31 urbanas y 562 rurales de los 17 municipios de Tabasco. Resultados. El indicador peso/edad registró 41% de prevalencia de desnutrición, distribuida en leve (26.12%, moderada (12.62% y severa (2.39%. En niños de entre 1 y 5 años la prevalencia de desnutrición fue de 45%. Conclusiones. De 1991 a 1996 la cifra de niños con desnutrición ha disminuido proporcionalmente al incremento de la nutrición normal. Asimismo, han disminuido de seis a cuatro los municipios con indicadores críticos de desnutrición, con base en las acciones del sector salud en el estado de Tabasco.

  17. Corrosivity Index Copper and Steel at Two Locations in Villahermosa, Tabasco

    Directory of Open Access Journals (Sweden)

    Tejero-Rivas María Candelaria

    2015-03-01

    Full Text Available This paper presents a study of the atmospheric corrosion of copper and carbon steel made ​​in two environments Villahermosa, Tabasco for six months. The test site of the industrial zone started Villahermosa Institute of Technology (ITVH and rural-urban site at the Technological University of Tabasco (UTTAB. Aluminum in combination with a screw carbon steel provided the index marine corrosivity (MA, the brass screw gives the index of industrial corrosivity (IA; wire method of screw according to ASTM G116-93 was used and the plastic screw nylon gives the rate of rural-urban corrosivity (RUA. The determination of air pollutants (sulfur dioxide and chlorides, was with the methods of wet candle and sulfation plates according to ISO 9225. Morphology studies were performed on the corrosion products formed on the specimens screw, using scanning electron microscopy coupled with energy dispersive. The corrosion products that formed on the surface of copper and carbon steel, having a bulb-shaped morphology characteristic of the addition of soluble salts, particularly sulphates and chlorides, were identified in the two stations.

  18. Prevalence of gastrointestinal parasites in domestic dogs in Tabasco, southeastern Mexico

    Directory of Open Access Journals (Sweden)

    Oswaldo Margarito Torres-Chablé

    Full Text Available Abstract The overall goal of this study was to estimate the prevalence of gastrointestinal (GI parasites in dogs in the city of Villahermosa in Tabasco, Mexico. The study population consisted of 302 owned dogs that had limited access to public areas. A fecal sample was collected from each animal and examined for GI parasites by conventional macroscopic analysis and centrifugal flotation. Fecal samples from 80 (26.5% dogs contained GI parasites. Of these, 58 (19.2% were positive for helminths and 22 (7.3% were positive for protozoan parasites. At least seven parasitic species were identified. The most common parasite was Ancylostoma caninum which was detected in 48 (15.9% dogs. Other parasites detected on multiple occasions were Cystoisospora spp. (n = 19, Toxocara canis (n = 7 and Giardia spp. (n = 3. Three additional parasites, Dipylidium caninum, Trichuris vulpis and Uncinaria spp., were each detected in a single dog. No mixed parasitic infections were identified. In summary, we report a moderately high prevalence of GI parasites in owned dogs in Villahermosa, Tabasco. Several parasitic species identified in this study are recognized zoonotic pathogens which illustrates the important need to routinely monitor and treat dogs that live in close proximity to humans for parasitic infections.

  19. Return Migration from the United States to Rural Areas of Campeche and Tabasco

    Directory of Open Access Journals (Sweden)

    Luis Alfredo ARRIOLA VEGA

    2014-01-01

    Full Text Available El artículo presenta la situación del retorno contemporáneo de migrantes origina - rios de áreas rurales de Campeche y Tabasco que viajaron a Estados Unidos. Con datos obtenidos de 60 retornados, a través de entrevistas realizadas en 2006 y 2007 en Campeche y de una encuesta administrada en 2008 y 2009 en Tabasco, se deter - minó que la mayoría de los migrantes regresaban por la misma motivación que lo han hecho, históricamente, muchos otros mexicanos: los nexos familiares. Empero, en esta región de emigración emergente la decisión del retorno también ha sido determinada últimamente por razones coyunturales y estructurales, al igual que lo sucedido en otras zonas del país. Entre esas causas están las políticas migratorias res - trictivas y la crisis económica en la sociedad de destino. Ante este panorama adverso, las pautas tradicionales del retorno difícilmente se restablecerán en el corto plazo, o quizás cambien en forma permanente.

  20. Curanderas a la sombra de la Huaca de la Luna

    Directory of Open Access Journals (Sweden)

    2004-01-01

    Full Text Available Dans ce travail nous présentons des informations archéologiques sur les représentations de femmes guérisseuses sur des poteries trouvées dans le complexe archéologique des Huacas del Sol et de la Luna. Le métier des femmes guérisseuses est un sujet peu étudié dans l’anthropologie culturelle andine, et la présence de représentations de celles-ci à l’époque Moche démontre une continuité culturelle entre le passé préhispanique et le temps présent. Nous suggérons dans ce travail que l’information recueillie sur la symbolique de “las mesas” de ces femmes guérisseuses est un excellent apport pour les archéologues et historiens des cultures préhispaniques, pour pouvoir comprendre les significations des contextes archélogiques, ou reconstruire la pensée ou l’idéologie de ces dernières. En este trabajo se presenta información arqueológica sobre representaciones de mujeres curanderas en ceramios Moche halladas en el complejo arqueológico Huacas del Sol y de la Luna. El oficio de mujeres curanderas es un tema poco estudiado en la antropología cultural andina, y la presencia de representaciones de estas en época Moche demuestra una continuidad cultural entre el pasado prehispánico y el presente. Sugerimos que la información recopilada sobre la simbología de las mesas de estas mujeres curanderas en este trabajo es una excelente ayuda para los arqueólogos e historiadores de las culturas prehispánicas, cuando buscan comprender los significados de contextos arqueológicos o reconstruir el pensamiento o ideología de ellas. This paper presents archaeological information about female healers or curanderas that are represented on Moche ceramics discovered in the archaeological complex of the Huaca del Sol and the Huaca de la Luna. The work of female healers is a little-studied topic in Andean cultural anthropology and the presence of these curanderas in the Moche period demonstrates cultural continuity between the pre

  1. Plan de manejo integral del sitio arqueológico Santa Elena, Tabasco, México

    OpenAIRE

    González Licón, Ernesto; Perales Vela, Rebeca; Mugarte Moo, Jacobo

    2013-01-01

    En este artículo se destaca la importancia histórica, cultural y turística del sitio arqueológico de Santa Elena, en el Estado de Tabasco, México. Mediante la ejecución de un proyecto de investigación arqueológica y Plan de Manejo Integral se pretende desarrollar todos estos aspectos para la recuperación del sitio y su entorno ecológico. Con la participación de los más amplios y diversos sectores públicos y privados interesados de los tres niveles de gobierno –federal, estatal y municipal–, s...

  2. Impacto socioambiental de la industria petrolera en Tabasco: el caso de la Chontalpa

    Directory of Open Access Journals (Sweden)

    Manuel Jesús Pinkus Rendón

    2012-07-01

    Full Text Available Esta investigación tiene el objetivo de valorar los impactos ambientales, económicos, sociales y políticos derivados de las actividades de Petróleos Mexicanos en cuatro poblaciones del estado de Tabasco. Se enmarca en la dinámica social comunitaria derivada de las actividades de la petrolera para conocer cómo afectan a los habitantes las relaciones con PEMEX y con los gobiernos locales. Partimos de la hipótesis de que el deterioro ambiental debe analizarse considerando las transformaciones que la política económica neoliberal está generando en el país, y en especial en el ámbito local, a partir de los años ochenta del siglo XX.

  3. Prevalencia de desnutrición en menores de cinco años de Tabasco

    OpenAIRE

    Lastra-Escudero Lucio G.; Roldán-Fernández Silvia G.; Hernández-Martínez Enrique; Hernández-Torres Alma Patricia; Lechuga-Padrón Félix Gerardo

    1998-01-01

    Objetivo. Evaluar la prevalencia de desnutrición que se presentó en niños tabasqueños menores de cinco años en 1996, y su evolución entre 1991 y 1996. Material y métodos. Se realizó un estudio de corte transversal que incluyó a 1 256 niños de 593 comunidades (31 urbanas y 562 rurales) de los 17 municipios de Tabasco. Resultados. El indicador peso/edad registró 41% de prevalencia de desnutrición, distribuida en leve (26.12%), moderada (12.62%) y severa (2.39%). En niños de entre 1 y 5 años la ...

  4. [Regulation of surrogate gestation and maternity in the state of Tabasco].

    Science.gov (United States)

    Ortiz, Miguel Ángel León

    2015-01-01

    In recent years, one of the most disconcerting issues in bioethics, a field closely related to legal disciplines, is surrogate gestation or surrogacy. Very little is known about the medical nature of these novel therapeutic processes in legal study. Different dilemmas emerge in the fields of ethics, medicine and law. This paper analyses the normative content of the Tabasco civil regime with respect to the concepts, types and effects of surrogacy. It emphasizes the primacy of protecting the physical and emotional integrity of pregnant women and the legal protection of the nasciturus. In addition, this paper shows the exceptional nature of this prerogative for infertile people who cannot get pregnant through any other medical means, by posing surrogacy's ultima ratio regum characteristics.

  5. [Prevalence of neutralizing antibodies to dengue virus serotypes in university students from Tabasco, Mexico].

    Science.gov (United States)

    Sánchez-Burgos, Gilma Guadalupe; López-Alvarado, Miguel Angel; Castañeda-Desales, Deyanira; Ruiz-Gómez, Juan; Ramos-Castañeda, José

    2008-01-01

    Determine the seroprevalence of neutralizing antibodies to dengue virus in students from the state university of Tabasco, Mexico. A transversal study was conducted of serum collected from students between September and November, 2005. The sera were screened for anti-dengue IgG and those that had evidence of dengue antibodies were analyzed by a plaque reduction neutralization test. Prevalence of anti-dengue IgG was 9.1%. The frequency of neutralizing antibodies was 100% for DENV-2, 68% for DENV-4, 20% for DENV-1, and 4 % for DENV-3. We found that in this population, DENV-2 circulates more than DENV-3 despite the fact that DENV-3 is more frequently isolated. Unexpectedly, neutralizing antibodies against DENV-4 were frequently found even though this serotype is almost extinct; thus, it is probable that cross-immunity could suppress DEN-4 transmission, as has been suggested.

  6. Las recientes transformaciones de la migración en Tabasco

    Directory of Open Access Journals (Sweden)

    Guadalupe Vautravers Tosca

    2009-01-01

    Full Text Available El presente artículo describe los cambios recientes en el patrón migratorio en el estado de Tabasco, México, especialmente entre los emigrantes del municipio fronterizo de Balancán que se trasladan hacia Estados Unidos. Entre las razones que identificamos para explicar por qué Balancán se ha sumado a la corriente migratoria tenemos: el hecho de que en este territorio se establecieron ejidatarios provenientes de Michoacán con antecedentes migratorios o con familiares residiendo en Estados Unidos; la conformación de una red social de migrantes ubicada en Oklahoma, iniciada desde la década de 1970 por un balancanense que emigró a Estados Unidos; y, por último, la situación de crisis económica que se ha vivido en el municipio durante los últimos años.

  7. PROBLEMATIC IN THE PROCESSES OF PRODUCTION IN RUBBER PLANTATIONS (Hevea brasiliensis Muell Arg. IN TABASCO, MEXICO

    Directory of Open Access Journals (Sweden)

    Heyra Izquierdo-Bautista

    2011-03-01

    Full Text Available The objective of this study was to identify some of the basic problems presented in the production process in rubber plantations Hevea brasiliensis Muell Arg. in Tabasco, Mexico. The applied diagnosis technique was the randomized survey for 68 producers in plantations under rubber production. ANOVA and Duncan analyses were done (P< 0.05. Plantations under production were between 7 to 46 years old. The 24% of these are considered as young plantations (7 to 18 years old, 34% mature (19 to 30 years old, and 12% old growth (31 to 46 years old, according to the level of latex production. Latex collection is realized by 85% men and 15% women. An important detected problem is the incidence of insects and diseases over the 82% of the plantations. In Tabasco State, two types of raw material are generated: clot (solid and latex (liquid. The tapping systems are ½ S d/1 6d/7 (one cuts in an average spiral with daily tapping over the 49% of the plantations, and the system ½ S d/2 6d/7, cuts in semi-spirals with alternating tapping over 51% of the plantations. The producers that practiced daily tapped obtained yields of 1.588 kg per ha/yr of dry rubber, in the other hand, those that tapped every other day obtained a yield of 1.647 kg per ha/year of dry rubber. The yield in daily tapping was 3.54% lower than the system with alternating tapping. The income obtained by the producers of fresh rubber varied from $8.750, 00 (810, 2 USD ha/year to $27.870, 00 (2.580 USD ha/year in 2006 and the production of latex from $5.955, 00 (551, 4 USD to 16.568,00 (1.534 USD per ha/year.

  8. The 3He(alpha,gamma)7Be S-factor at solar energies: the prompt gamma experiment at LUNA

    CERN Document Server

    Costantini, H; Confortola, F; Formicola, A; Gyürky, Gy; Bezzon, P; Bonetti, R; Broggini, C; Corvisiero, P; Elekes, Z; Fülöp, Z; Gervino, G; Guglielmetti, A; Gustavino, C; Imbriani, G; Junker, M; Laubenstein, M; Lemut, A; Limata, B; Lozza, V; Marta, M; Menegazzo, R; Prati, P; Roca, V; Rolfs, C; Alvarez, C Rossi; Somorjai, E; Straniero, O; Strieder, F; Terrasi, F; Trautvetter, H P

    2008-01-01

    The 3He(alpha,gamma)7Be process is a key reaction in both Big-Bang nucleosynthesis and p-p chain of Hydrogen Burning in Stars. A new measurement of the 3He(alpha,gamma)7Be cross section has been performed at the INFN Gran Sasso underground laboratory by both the activation and the prompt gamma detection methods. The present work reports full details of the prompt gamma detection experiment, focusing on the determination of the systematic uncertainty. The final data, including activation measurements at LUNA, are compared with the results of the last generation experiments and two different theoretical models are used to obtain the S-factor at solar energies.

  9. Panorama y desarrollo de las ciencias sociales en el estado de Tabasco Outlook for and Development of Social Sciences in the State of Tabasco

    Directory of Open Access Journals (Sweden)

    Rodolfo Uribe Iniesta

    2011-04-01

    Full Text Available El presente trabajo presenta el panorama y describe el desarrollo de las reflexiones y diagnósticos del pensamiento social y las ciencias sociales sobre y desde el estado de Tabasco; y las condiciones del entorno social local en el que se practican. En el trabajo se demuestra que la producción de este tipo de trabajos es perfectamente acorde a los momentos de crisis y por su tipo refleja perfectamente los momentos de continuidad y ruptura en la historia del estado a pesar de un entorno sociocultural poco propicio. Así, por ejemplo, las ciencias sociales son sub-sumidas a un papel de mera contabilidad social, legitimación y promoción durante el periodo del desarrollismo económico (1953-1970 caracterizado por la construcción de grandes obras de infraestructura y planes de desarrollo agropecuario territorial, o durante la expansión de las obras de exploración y explotación petrolera; pero son llamadas a encontrar explicaciones y alternativas cuando la población regional reacciona contra los excesos y resultados no deseados de tales desarrollos, como ocurre con la resistencia contra el Plan Chontalpa y posteriormente con la resistencia contra los impactos de la industria petrolera. En el momento de mayor auge económico petrolero y su crisis, se hace un esfuerzo por implantar localmente la enseñanza y la investigación de dichas disciplinas, a la vez que ofrecen un discurso alternativo de desarrollo endógeno. Posteriormente, a partir de mediados de la década de los noventa llama la atención que la planeación se realiza a escala macrorregional y los trabajos locales pasan de depender de proyectos institucionales a iniciativas personales de funcionarios locales que dan los espacios o promueven las investigaciones y las publicaciones.This article presents an overview and description of the development of the reflections on and diagnosis of social thought and social sciences on and from the state of Tabasco; and the conditions of the

  10. Development of compact synchrotron light source LUNA for x-ray lithography

    Science.gov (United States)

    Takahashi, M.; Mandai, S.; Hoshi, Y.; Kohno, Y.

    1992-01-01

    A compact synchrotron light source LUNA has been developed by Ishikawajima-Harima Heavy Industries Co., Ltd. (IHI), especially for x-ray lithography. It consists of a 45-MeV linac as an electron injector and an 800-MeV synchrotron. The peak wavelength of synchrotron radiation is around 10 Å. The installation of LUNA was completed in April 1989 at the Tsuchiura Facility of IHI. The synchrotron radiation was first observed in December 1989. A stored beam current of 50 mA at 800 MeV and a lifetime over 1 h have been achieved. At present, experiments are still continuing to increase the stored current and the lifetime. X-ray lithography testing is scheduled to begin in a clean room in this facility. This paper describes the outline of LUNA and the present status.

  11. Ultra-sensitive in-beam gamma-ray spectroscopy for nuclear astrophysics at LUNA

    CERN Document Server

    Caciolli, A; Bemmerer, D; Bonetti, R; Broggini, C; Confortola, F; Corvisiero, P; Costantini, H; Elekes, Z; Formicola, A; Fülöp, Z; Gervino, G; Guglielmetti, A; Gustavino, C; Gyurky, Gy; Imbriani, G; Junker, M; Laubenstein, M; Lemut, A; Limata, B; Marta, M; Mazzocchi, C; Menegazzo, R; Prati, P; Roca, V; Rolfs, C; Alvarez, C Rossi; Somorjai, E; Straniero, O; Strieder, F; Terrasi, F; Trautvetter, H P

    2008-01-01

    Ultra-sensitive in-beam gamma-ray spectroscopy studies for nuclear astrophysics are performed at the LUNA (Laboratory for Underground Nuclear Astrophysics) 400 kV accelerator, deep underground in Italy's Gran Sasso laboratory. By virtue of a specially constructed passive shield, the laboratory gamma-ray background for E_\\gamma < 3 MeV at LUNA has been reduced to levels comparable to those experienced in dedicated offline underground gamma-counting setups. The gamma-ray background induced by an incident alpha-beam has been studied. The data are used to evaluate the feasibility of sensitive in-beam experiments at LUNA and, by extension, at similar proposed facilities.

  12. Implications from Luna 24 sample 24170 to U-Pb evolution in the lunar mantle

    Science.gov (United States)

    Unruh, D. M.; Tatsumoto, M.

    1978-01-01

    The concentrations of U, Th and Pb, as well as the Pb isotopic composition, have been determined for a Luna 24 sample from the Mare Crisium area. A relatively recent disturbance to the U-Pb system during meteorite impact or burial in hot ejecta is suggested by the findings. According to three-stage U-Pb evolution model calculations, the source cumulates of the Luna 24 basalt evolved in a U-238/Pb-204 environment much lower than that of the Apollo mare basalts. A laterally heterogeneous lunar magma ocean, U-Pb fractionation during cumulate formation, and/or lack of KREEP addition to the Luna 24 basalt are also reflected in the calculations.

  13. Big Bang 6Li nucleosynthesis studied deep underground (LUNA collaboration)

    Science.gov (United States)

    Trezzi, D.; Anders, M.; Aliotta, M.; Bellini, A.; Bemmerer, D.; Boeltzig, A.; Broggini, C.; Bruno, C. G.; Caciolli, A.; Cavanna, F.; Corvisiero, P.; Costantini, H.; Davinson, T.; Depalo, R.; Elekes, Z.; Erhard, M.; Ferraro, F.; Formicola, A.; Fülop, Zs.; Gervino, G.; Guglielmetti, A.; Gustavino, C.; Gyürky, Gy.; Junker, M.; Lemut, A.; Marta, M.; Mazzocchi, C.; Menegazzo, R.; Mossa, V.; Pantaleo, F.; Prati, P.; Rossi Alvarez, C.; Scott, D. A.; Somorjai, E.; Straniero, O.; Szücs, T.; Takacs, M.

    2017-03-01

    The correct prediction of the abundances of the light nuclides produced during the epoch of Big Bang Nucleosynthesis (BBN) is one of the main topics of modern cosmology. For many of the nuclear reactions that are relevant for this epoch, direct experimental cross section data are available, ushering the so-called "age of precision". The present work addresses an exception to this current status: the 2H(α,γ)6Li reaction that controls 6Li production in the Big Bang. Recent controversial observations of 6Li in metal-poor stars have heightened the interest in understanding primordial 6Li production. If confirmed, these observations would lead to a second cosmological lithium problem, in addition to the well-known 7Li problem. In the present work, the direct experimental cross section data on 2H(α,γ)6Li in the BBN energy range are reported. The measurement has been performed deep underground at the LUNA (Laboratory for Underground Nuclear Astrophysics) 400 kV accelerator in the Laboratori Nazionali del Gran Sasso, Italy. The cross section has been directly measured at the energies of interest for Big Bang Nucleosynthesis for the first time, at Ecm = 80, 93, 120, and 133 keV. Based on the new data, the 2H(α,γ)6Li thermonuclear reaction rate has been derived. Our rate is even lower than previously reported, thus increasing the discrepancy between predicted Big Bang 6Li abundance and the amount of primordial 6Li inferred from observations.

  14. Avifauna en sistemas silvopastoriles en el Corredor Biológico Mesoamericano, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Noel González-Valdivia

    2014-09-01

    Full Text Available Los sistemas silvopastoriles contienen rasgos ecológicos y económicos que contribuyen con la conservación de comunidades florísticas y faunísticas que en ellas se desarrollan. Entre otras comunidades faunísticas se encuentra la avifauna la cual es un grupo representativo de las alteraciones del habitat, tanto a nivel específico como grupo functional. Con el objetivo de atender la iniciativa de Corredor Biológico Mesoamericano en Tabasco, México, se analizó la diversidad de aves en dos sistemas silvopastoriles: árboles dispersos en potreros (ADP y árboles en cercos o linderos (AL. Se aplicó el método de punto de conteo de radio fijo en tres sitios prioritarios del CBM de Tabasco, ubicados en los municipios: Huimanguillo, Tacotalpa y Tenosique. Los datos provienen de las estaciones seca y húmeda del 2011. Se registraron 2 084 aves de 154 especies (79-89% del esperado y 36 familias. Se detectaron 92, 87 y 85 especies, incluyendo 35 protegidas, con 23, 19 y 16 en Huimanguillo, Tacotalpa y Tenosique, respectivamente. Todos los sitios mostraron alta diversidad (H’≥3.20, baja dominancia de especies (D≥0.08 y alta equidad (J≥0.77. La composición de especies mostró diferencias entre sitios, con mayor similitud entre Tacotalpa y Tenosique. Diez especies pueden considerarse características de los sitios. Aunque en los sistemas silvopastoriles se refugian aves protegidas, el componente arbóreo es poco diverso y corresponde a especies de sucesión secundaria temprana, lo que limita a las aves frugívoras y especialistas de bosque. Diversificar estos sistemas con árboles nativos puede mejorar estos hábitats complementarios e incrementar la conectividad del paisaje para cumplir con los objetivos del CBM en la conservación de la biodiversidad y provisión de bienes a las poblaciones humanas.

  15. On the occurrence of Lampris luna, Gmel. on the Dutch coast

    NARCIS (Netherlands)

    Lidth de Jeude, van Th.W.

    1889-01-01

    On Dec. 8th 1888 a large fish was washed ashore near Scheveningen, and was captured by two fishermen, who brought it to the Leyden Museum. They told us nobody in Scheveningen ever saw such a fish, and were very much surprised as we showed them a stuffed specimen of Lampris luna, captured at

  16. Watervogels en fecale bacteriën in de plassen van het Park van Luna

    NARCIS (Netherlands)

    Kleijn, D.; Meerburg, B.G.

    2011-01-01

    Het in dit rapport beschreven onderzoek heeft tot doel om vast te stellen of de slechte zwemwaterkwaliteit (te hoge concentraties door watervogels uitgescheiden fecale bacteriën) in de plassen van het Park van Luna, Heerhugowaard, gerelateerd is aan de hoge concentraties onopgeloste bestanddelen in

  17. [Hip fracture in older adults: prevalence and costs in two hospitals. Tabasco, Mexico, 2009].

    Science.gov (United States)

    Quevedo-Tejero, Elsy del Carmen; Zavala-González, Marco Antonio; Hernández-Gamas, Arianna del Carmen; Hernández-Ortega, Hilda María

    2011-01-01

    To determine hip fracture prevalence and direct healthcare costs in elderly users of the reference hospitals of the Mexican Institute of Social Insurance (IMSS by spanish initials) and Mexican Oils (PEMEX by spanish initials), from Villahermosa, Tabasco, Mexico, during 2009. This is a cross-sectional study. The information was based on the registers of surgical interventions and institutional reports of the elderly inpatients who had a registered attention in their institution. Descriptive statistical analysis was performed considering the following variables: age, gender, hip fracture type, occurrence month, direct healthcare cost. Out of 10,765 records of hospitalized elderly, 57 hip fracture cases were found (33 in the IMSS and 24 in PEMEX). Hip fracture prevalence was 0.5%, (IMSS 1.1% and PEMEX 0.3%), being more frequent in women and older than 69. The most frequent fracture type was the femur neck one (78.9%). The estimated cost of healthcare in the hospital per patient was USD 5,803 in the IMSS and USD 11,800 in PEMEX. The hip fracture prevalence was higher in the IMSS users. Estimated healthcare costs per patient were higher than the reported in other institutions of the of the mexican health national system.

  18. Avatares y desafíos del Instituto Juárez de Tabasco

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    Judith Pérez Castro

    2015-01-01

    Full Text Available El propósito de este trabajo es hacer un análisis de las circunstancias que rodearon la fundación y el desarrollo del Instituto Juárez de Tabasco. El artículo intenta mostrar la compleja situación que enfrentó este establecimiento educativo desde su creación en 1879 hasta las primeras décadas del siglo XX y el impacto que esto tuvo tanto en su oferta educativa como en su planta académica. Las principales variables que contextualizaron el desarrollo institucional fueron la difícil situación financiera, el cierre y apertura de sus carreras, la insuficiencia de matrícula, la débil organización de su cuerpo de profesores y la inestabilidad política estatal. A pesar de esto, el Instituto Juárez logra mantenerse y consolidarse como la principal opción educativa a nivel preparatoria y profesional en la entidad, hecho que aunado a un nuevo proceso de reforma hacen posible su ascenso como universidad hacia finales de los años cincuenta.

  19. Plan de manejo integral del sitio arqueológico Santa Elena, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Ernesto González Licón

    2013-11-01

    Full Text Available En este artículo se destaca la importancia histórica, cultural y turística del sitio arqueológico de Santa Elena, en el Estado de Tabasco, México. Mediante la ejecución de un proyecto de investigación arqueológica y Plan de Manejo Integral se pretende desarrollar todos estos aspectos para la recuperación del sitio y su entorno ecológico. Con la participación de los más amplios y diversos sectores públicos y privados interesados de los tres niveles de gobierno –federal, estatal y municipal–, se plantea el diseño de un Plan de manejo local y regional que permita el desarrollo sustentable de la zona y de su entorno para que sea abierta al público en general. Lo anterior será una fuente de información y conocimiento histórico, cultural, identitario y ecoturístico, que coadyuvará en el desarrollo integral de las comunidades actuales vecinas y cercanas.

  20. Identidades y tendencias migratorias desde la pesca en Chiapas y Tabasco

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    Práxedes Muñoz-Sánchez

    2013-01-01

    Full Text Available A partir de una etnografía, se revisan las nociones migratorias de los pobladores de dos regiones pesqueras en el sureste de México: Arriaga, estado de Chiapas, en la Costa del Pacífico, y La Barra de San Pedro, estado de Tabasco, en la Costa del Golfo de México, así como sus identidades y tendencias. La costa de Arriaga se localiza en una región de ámbito pesquero y paso fronterizo hacia Estados Unidos; por su parte, La Barra de San Pedro ha sido un lugar receptor de población veracruzana desde 1980 y en la actualidad laboralmente activa en la pesquería artesanal de mediana altura, compartiendo un espacio marino con la explotación petrolera. Como territorios de economía pesquera, observamos realidades, migración y tendencias en jóvenes de familias de pescadores, quienes con identidades similares y diferencias regionales están revirtiendo en el futuro de la pesca las intenciones de que perdure esta actividad y sus necesidades migratorias.

  1. Plan de manejo integral del sitio arqueológico Santa Elena, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Ernesto González Licón

    2013-12-01

    Full Text Available En este artículo se destaca la importancia histórica, cultural y turística del sitio arqueológico de Santa Elena, en el Estado de Tabasco, México. Mediante la ejecución de un proyecto de investigación arqueológica y Plan de Manejo Integral se pretende desarrollar todos estos aspectos para la recuperación del sitio y su entorno ecológico. Con la participación de los más amplios y diversos sectores públicos y privados interesados de los tres niveles de gobierno –federal, estatal y municipal–, se plantea el diseño de un Plan de manejo local y regional que permita el desarrollo sustentable de la zona y de su entorno para que sea abierta al público en general. Lo anterior será una fuente de información y conocimiento histórico, cultural, identitario y ecoturístico, que coadyuvará en el desarrollo integral de las comunidades actuales vecinas y cercanas.

  2. Histología del ciclo reproductor de hembras del pejelagarto Atractosteus tropicus (Lepisosteiformes: Lepisosteidae enTabasco, México Histology of reproductive cycle of tropical gar Atractosteus tropicus females (Lepisosteiformes: Lepisosteidae in Tabasco, Mexico.

    Directory of Open Access Journals (Sweden)

    Otilio Méndez-Marin

    2012-12-01

    pueden funcionar como un gatillo ambiental, en el desarrollo de la ovogénesis y el desove.In Southeast Mexico, A. tropicus is a species with great ecological, economic, cultural and aquaculture value, however wild populations have diminished due to diverse anthropological causes. The objective of this study was to characterize the reproductive cycle of A. tropicus, with a description of complete gonad structure and the changes in germinal and somatic elements during oogenesis, for better management and use of this species. Six sexually mature females (N=72 were captured monthly with drag nets during one year cycle (October 2003-October 2004 in wild populations of Pomposu lagoon, municipality of Jalpa de Mendez, Tabasco, Mexico. Females were sacrificed by decapitation and the ovaries were processed by standard histological methods; the diameter of 10-20 oocytes taken at random was determined in different stages of development. Gonadosmatic index (GSI, gonadal volume (gV and follicule diameter (fD were determined monthly. Among results we could determine eight oogenesis developmental stages: I: chromatin nucleolus stage, II: early perinucleolus stage, III: mid perinucleolus stage, IV: advanced perinucleolus stage, V: early vitellogenesis stage, VI: mid vitellogenesis stage, VII advanced vitellogenesis stage and VIII: final maturation stage. The reproductive cycle could be divided in four phases: I: proliferative phase, II: initial maturation phase, III: late maturation phase, IV: regressing phase. Analysis of the data obtained from the IGS, gV and fD values, oogenesis stages and reproductive phases, indicate that in December previtellogenesis phase restarts, from March through July yolk deposition (vitellogenesis occurs, and from August to November the maximum reproductive activity takes place. Contrasting this pattern with local environmental factors such as temperature and precipitation, we suggested that these may serve as an environmental activator in the development

  3. Flexibilidad curricular y tutorías, efecto en la formación de personal de salud, en Tabasco, México.

    OpenAIRE

    Marco A. Závala-González; Josefina Barojas-Sánchez; Cynthia del C. Gómez-Gallardo; María A. Ramírez-Frias; María de los A. Cruz-Arceo; Leticia Fócil-González

    2011-01-01

    Objetivo: Determinar el efecto del plan flexible institucional, sobre los indicadores académicos de los alumnos de licenciatura del área de la salud, de la Universidad Juárez Autónoma de Tabasco. Diseño: observacional, retrospectivo, transversal, comparativo. Lugar: Universidad Juárez Autónoma de Tabasco. Participantes: 2963 alumnos del ciclo escolar Agosto/2001–Agosto/2002, y 1740 del ciclo Agosto/2006–Agosto/2007. No se tomó muestra. Grupo 1: alumnos del ciclo 2006-07, plan flexible. Grupo ...

  4. Mirmecofauna asociada con sistemas agroforestales en el Corredor Biológico Mesoamericano en Tabasco, México Mirmecofauna associated with agroforestry systems in the Mesoamerican Biological Corridor in Tabasco, Mexico

    OpenAIRE

    González-Valdivia, Noel A.; Gabriela González-Escolástico; Everardo Barba; Salvador Hernández-Daumás; Susana Ochoa-Gaona

    2013-01-01

    Se evaluaron la riqueza, la abundancia y la distribución de hormigas como indicadores para monitoreo ecológico en los sistemas agroforestales en 3 regiones dentro del Corredor Biológico Mesoamericano en Tabasco, México. Los sistemas agroforestales (SAF) analizados fueron de árboles en linderos (AL) y de árboles dispersos en potreros (ADP). El estudio establece una línea de base para evaluar el estado de conservación de este grupo biológico en SAF de las regiones prioritarias para el Corredor ...

  5. Prevalencia de anticuerpos neutralizantes contra los serotipos del virus dengue en universitarios de Tabasco, México Prevalence of neutralizing antibodies to dengue virus serotypes in university students from Tabasco, Mexico

    Directory of Open Access Journals (Sweden)

    Gilma Guadalupe Sánchez-Burgos

    2008-10-01

    Full Text Available OBJETIVO: Determinar la seroprevalencia de anticuerpos neutralizantes de los serotipos del virus dengue en estudiantes universitarios de Tabasco, México, durante los meses de septiembre a noviembre del año 2005. MATERIAL Y MÉTODOS: Se determinó la presencia de IgG contra el virus en el suero de estudiantes que acudieron al centro clínico de la universidad; en los sueros positivos se determinaron los anticuerpos neutralizantes mediante el ensayo de reducción de placa lítica. RESULTADOS: La prevalencia de IgG contra el dengue fue de 9.1%; de esta proporción, los anticuerpos neutralizantes fueron DENV-1 (20%, DENV-2 (100%, DENV-3 (4% y DENV-4 (68%. CONCLUSIONES: Este estudio muestra que el serotipo transmitido con mayor frecuencia en el estado de Tabasco es el DENV-2, aunque no ha sido el aislado con más frecuencia. La elevada prevalencia de anticuerpos neutralizantes contra el DENV-4, al parecer de reacción cruzada, podría explicar la baja circulación de este serotipo en Tabasco.OBJECTIVE: Determine the seroprevalence of neutralizing antibodies to dengue virus in students from the state university of Tabasco, Mexico. MATERIAL AND METHODS: A transversal study was conducted of serum collected from students between September and November, 2005. The sera were screened for anti-dengue IgG and those that had evidence of dengue antibodies were analyzed by a plaque reduction neutralization test. RESULTS: Prevalence of anti-dengue IgG was 9.1%. The frequency of neutralizing antibodies was 100% for DENV-2, 68% for DENV-4, 20% for DENV-1, and 4 % for DENV-3. CONCLUSIONS: We found that in this population, DENV-2 circulates more than DENV-3 despite the fact that DENV-3 is more frequently isolated. Unexpectedly, neutralizing antibodies against DENV-4 were frequently found even though this serotype is almost extinct; thus, it is probable that cross-immunity could suppress DEN-4 transmission, as has been suggested.

  6. Fluctuación poblacional de Xyleborus ferrugineus y X. affinis (Coleoptera: Curculionidae en ecosistemas de Tabasco, México Population fluctuation of Xyleborus ferrugineus and X. affinis (Coleoptera: Curculionidae in ecosystems of Tabasco, Mexico

    Directory of Open Access Journals (Sweden)

    Ricardo Rangel

    2012-12-01

    ógicos y abióticos que influyen en las fluctuaciones de éstos insectos.The Scolytinae insects are commonly known as bark or ambrosial beetles because of their feeding habits. Among them, some species restrict their reproductive activity to a host plant or a small number of them, whereas others are highly polyphagous. In order to evaluate the population dynamics of Scolytinae species, populations of Xyleborus ferrugineus and X. affinis in ecosystems from Tabasco, Mexico were studied. The study was carried out from November 2010-July 2011, February 2010-January 2011 and 2007. The trapping methods used were alcohol traps, light traps and direct capture on their host plants. A total of 688 specimens of X. ferrugineus and 3 911 specimens of X. affinis were collected. The population dynamics of X. ferrugineus showed low size population in the studied ecosystems, without any marked seasonality. The highest population sizes were recorded both in dry season (March-May and rainy season (September-December. Unlike the populations of X. ferrugineus, those of X. affinis were more abundant and showed the highest peaks during the rainy seasons (except in May at the Botanical Garden “José Narciso Rovisora”. Alcohol and light traps can be complementary methods for monitoring the populations of these types of insects. They occur most of the year and theirs population dynamics depends on food resources availability as well as environmental factors such as temperature and humidity. Judging by the observed abundance it is suggested that X. affinis has been adapted and exploited resources in a better way than X. ferrugineus in those ecosystems. Correlations between abundance and climatic factors had both positive and negative values. The results reflect the behavior of populations. However, a detail assessment of the biological and abiotic factors that influence the fluctuations of these insects is required.

  7. Zonificación edafoclimática para el cultivo de Jatropha curcas L., en Tabasco, México

    Directory of Open Access Journals (Sweden)

    Rigoberto Gonzalez Mancillas

    2015-01-01

    Full Text Available El agotamiento de las reservas petrolíferas y la creciente demanda energética mundial, ponen en evidencia la necesidad de ampliar la oferta de aceites para la producción de biodiesel. El objetivo principal de este estudio, fue determinar las zonas aptas con diferentes aptitudes agroecológicas para establecer el cultivo de Jatropha curcas, en el estado de Tabasco. Para ello se definieron cuatro tipos de aptitud: óptima, adecuada, marginal por déficit térmico e hídrico, y marginal por exceso térmico e hídrico. Para el recurso suelo se consideró la fertilidad, profundidad, textura y pH, y se utilizó la clase de aptitud óptima. La delimitación de estas zonas se generó mediante la implementación de un sistema de información geográfica (SIG, el cual facilitó la manipulación y sobreposición de capas de información temática de clima y suelo. El análisis promedio anual de temperatura demostró que todo el estado de Tabasco presenta aptitud óptima y con el de precipitación se obtuvo una superficie de 2 229 631 ha con aptitud óptima. En lo referente al recurso suelo se detectaron 37 subunidades de suelo con aptitud óptima, sumando una superficie de 945 462 ha. Al realizar el álgebra de mapas entre las aptitudes óptimas climáticas (temperatura, precipitación y period de crecimiento y edafológicas, se obtuvieron 833 181 ha con aptitud agroecológica óptima, por lo que en el estado de Tabasco es factible cultivar esta oleaginosa para producer biocombustibles.

  8. Vulnerabilidad social de la población desplazada ambiental por las inundaciones de 2007 en Tabasco (México

    Directory of Open Access Journals (Sweden)

    Guadalupe del Carmen Álvarez Gordillo

    2016-02-01

    Full Text Available In this article an analysis is made of the people of Tabasco environmentally displaced during the flood disaster of 2007, including the related factors of social vulnerability. A population survey was taken to learn the demographical, social, and cultural characteristics related to the post-flood displacements, including the return of some of the victims and the intentions of others to permanently migrate. Findings showed a high return rate for reasons of culture and a personal capital situation, a resumption of daily life, and a lack of desire to migrate to other regions. Based on these results, future adjustments are suggested for attending the population displaced by the floods.

  9. Zonificación edafoclimática para el cultivo de Jatropha curcas L., en Tabasco, México

    OpenAIRE

    Rigoberto Gonzalez Mancillas; José Francisco Juárez López; Lorenzo Armando Aceves Navarro; Benigno Rivera Hernández; Armando Guerrero Peña

    2015-01-01

    Resumen. El agotamiento de las reservas petrolíferas y la creciente demanda energética mundial, ponen en evidencia la necesidad de ampliar la oferta de aceites para la producción de biodiesel. El objetivo principal de este estudio, fue determinar las zonas aptas con diferentes aptitudes agroecológicas, para establecer el cultivo de Jatropha curcas en el estado de Tabasco. Para ello se definieron cuatro tipos de aptitud: óptima, adecuada, marginal por déficit térmico e hídrico, y marginal por ...

  10. Use of the paca, Cuniculus paca (Rodentia: Agoutidae in the Sierra de Tabasco State Park, Mexico

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    Sonia Gallina

    2012-09-01

    Full Text Available Cuniculus paca is widely distributed throughout the Neotropics. Known as the paca, it is the largest rodent in the Mexican tropical forests, and one of the most used as a subsistence species for its meat. Since colonial times, this species has been subject of an unreported hunting pressure. For this reason, the aim of this work was to describe the use of the paca by the inhabitants of the Sierra de Tabasco State Park (STSP using sampling areas in a matrix of vegetation with different degrees of disturbance, and different types of land use. We included both preserved areas: owing to the presence of large continuous areas of fragmented rainforest and areas that are not preserved, with smaller rainforest fragments and more isolated. To obtain information about paca use, we interviewed 176 people (>18 years old who live in the STSP. All those interviewed had eaten paca meat, and indicated that this species is most frequently observed in the rainforest during the dry season. Hunting and trapping were the most common ways to obtain pacas, rather than gifting or purchasing, and firearms and dogs are used to hunt them. We estimated that these interviewed group had hunted a total of 488 paca in the year prior to the study.Cuniculus paca está ampliamente distribuido en el Neotrópico. El tepezcuintle o paca es el roedor más grande que se encuentra en las selvas tropicales de México. En cuanto a la cacería de subsistencia es una de las especies más buscadas por su carne. Como se desconoce el impacto de esta actividad, se describe el aprovechamiento que le dan las comunidades humanas en el Parque Estatal de la Sierra de Tabasco (PEST. También, se determinaron zonas de muestreo, las cuales se encontraban en una matriz perturbada en menor o mayor grado, con diferentes tipos de uso de suelo. Además, se consideraron zonas conservadas por la presencia continua de grandes extensiones de selvas fragmentadas y las zonas no conservadas por tener fragmentos

  11. Plantas útiles en la medicina tradicional de Malpasito-Huimanguillo, Tabasco, México

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    Edelia Claudina Villarreal-Ibarra

    2015-07-01

    Full Text Available En México las plantas medicinales son el recurso terapéutico por excelencia en la medicina tradicional, es rescatable en gran medida por constituir un importante elemento al combinar el conocimiento popular con el científi co para el tratamiento de diversas enfermedades en la atención primaria de la salud. El presente estudio documenta el conocimiento tradicional de las plantas medicinales en la comunidad de Malpasito, dentro de la Reserva Ecológica de Agua Selva en Huimanguillo, Tabasco, México. Se incluye un inventario de plantas medicinales de la región, información sobre el uso terapéutico, la forma de preparación y parte vegetal utilizada. La información se recabó mediante entrevistas estructuradas TRAMIL. Se registraron 128 especies de plantas medicinales empleadas en la comunidad distribuidas en 63 familias botánicas cuyas especies dominantes pertenence a: Asteraceae (10, Leguminosae y Lamiaceae (siete, Verbeneaceae (cinco, Rutaceae y Solanaceae (cuatro. Se reportan 13 especies medicinales con nivel de uso signifi cativo superior al 20%. Los usos medicinales se agruparon y clasifi caron en 17 categorías, en orden de prioridad: desórdenes del sistema digestivo, genitourinario y endócrino, seguidos de las infecciones y desórdenes del sistema respiratorio. Los resultados sugieren la necesidad de futuros estudios de valoración científica para las especies locales empleadas para el tratamiento de alguna enfermedad.

  12. The vanadium isotopic constitution of petroleum asphaltenes: La Luna Formation (Venezuela).

    Science.gov (United States)

    Premović, P I; Tonsa, I R; López, L; Pavlović, M S; Nesković, O M; LoMonaco, S; Dordević, D M; Veljković, M V

    2000-05-30

    High-resolution mass spectrometry indicates that the isotopic abundance of 50V of the Late Cretaceous La Luna petroleum asphaltenes of marine origin (highly enriched with V > 2000 ppm) is higher by about 3.5% than that of the inorganic source (VOSO4 x 5H2O, Merck). We propose that the difference in the 50V/51V values between the La Luna petroleum asphaltenes and the inorganic source can be best ascribed to the biological processing of seawater vanadium. The fact that the V isotopic compositions of petroleum asphaltenes vary over a very narrow range (2.46-2.52) suggests essentially the same (or similar) and fixed biological source of vanadium.

  13. The vanadium isotopic constitution of petroleum asphaltenes: La Luna Formation (Venezuela

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    OLIVERA M. NESKOVIC

    2000-08-01

    Full Text Available High resolution mass spectrometry indicates that the isotopic abundance of 50vanadium (V of the Late Cretaceous La Luna petroleum asphaltenes and related source kerogen of marine origin (both highly enriched with V >> 2000 ppm is higher by about 3,5 % than that of an inorganic vanadium source (VOSO4 > 5H2O, Merck. It is proposed that the difference in the 50V/51V values between the La Luna source kerogen/the associated petroleum asphaltenes and the inorganic source can be best ascribed to the biological processing of seawater V. The fact that the isotopic compositions of V vary over a very narrow range (2.46-2.50 suggest an essentially same (or similar and fixed bilogical source of V.

  14. [Somatometry in full-term newborns in Villahermosa, Tabasco, Mexico. Study of a middle-class population].

    Science.gov (United States)

    Jiménez-Balderas, E A; Sabino Osorio-Pérez, R; Huerta-Muñoz, V; Quijano de la Cruz, A

    1991-03-01

    Realize a somatometric study in the Tabasco zone and compared this results with a similar study. Full term newborns without patology take weight, height and head circumference. In Villahermosa City, Capital of Tabasco State in México, from march 1, 1988 to january 31, 1989. 915 fullterm newborn, male 450, female 465, from the patients of Instituto Mexicano del Seguro Social (Social Security System). The average weight in male was 3,290 g, with standard deviation (SD) 358 g, in female 3,130, SD 343 g (P less than 0.01); height in male 50.2, SD 1.3 cm, female 49.8, SD 1.3 cm (P less than 0.01); head circumference in male 34.7, SD 1.5 cm, female 34.5 SD 1.5 cm (P: without significance). We make our own percentiles. We found stadistic significance between both sexes; we don't found between another study; when we compared our work with others in past decades, observed the improved obtained by the people in our country.

  15. Major causes of organs and carcass condemnation in small ruminants slaughtered at Luna Export Abattoir, Oromia Regional State, Ethiopia.

    Science.gov (United States)

    Regassa, Alemayehu; Moje, Nebyou; Megersa, Bekele; Beyene, Desta; Sheferaw, Dessie; Debela, Etana; Abunna, Fufa; Skjerve, Eystein

    2013-06-01

    A retrospective study and active abattoir survey were conducted from December 2009 to April 2010 to determine the major causes of organs and carcasses condemnation and to estimate the associated direct financial loss at Luna Export Abattoir, Central Ethiopia. The active abattoir survey was conducted on 674 goats and 451 sheep (n=1125) and three years (2007, 2008 and 2009), retrospective data of 718,395 sheep and goats were also collected. From the retrospective data it was observed that liver was the most frequently condemned organ with condemnation rate of 32.4%, 46.7% and 70.5%, respectively. The major causes of condemnation for liver, lung, heart, kidneys and brain were cirrhosis (12.3%, 17.0% and 12.8%), pneumonia (6.6%, 11.6% and 12.5%), pericarditis (0.6%, 0.8% and 0.4%), nephritis (0.6%, 0.8% and 1.2%) and abscess (0.005%, 0.007% and 0.012%), respectively. Consequently, the overall direct financial loss from organs and carcass condemnation during the three years was estimated to be 22,993,591 Ethiopian birr (ETB) or 1,323,257 United State Dollar (USD). On the other hand, detailed post mortem inspection of liver, heart, kidneys, tongue, brain and carcass during the active abattoir survey revealed that higher losses were caused mainly due to cirrhosis (89.3 kg, 2998 ETB), pericarditis (5.4 kg, 308 ETB), faulty evisceration (8.4 kg, 472 ETB), calcification (8.4 kg, 469 ETB) and Coenurus cerebralis (4.3 kg, 243 ETB) and poor carcass condition (bonny carcass) (1390 kg, 78,500 ETB), respectively. Other causes of condemnation were also recorded and totally, about 110,361 ETB (6351 USD) was lost only from organs and carcasses condemnation during the active abattoir survey. In conclusion, this study identified the major causes of organs and carcass condemnation in Luna Export Abattoir and estimated the associated direct financial losses. Copyright © 2012 Elsevier B.V. All rights reserved.

  16. Luna : [luuletused] / Kristjan Jaak Peterson ; lühibiograafia: S. S. [Svetlan Semenenko

    Index Scriptorium Estoniae

    Peterson, Kristian Jaak, 1801-1822

    1999-01-01

    Sisu: Luna / tlk. Vs. Rozhdestvenski; Druzhba ; Pesnja, slozhennaja v kortshme Tuule po doroge iz Tartu v Rigu, kuda ja otpravilsja navestit rodnõh ; Pesnja Jaaka (on sidit v odinotshestve na gore) / tlk. A. Sokolov ; V den Martina Lutera / tlk. Vs. Rozhdestvenski. Orig.: Kuu ; Sõprus ; Laul, kui ma Tartust läksin Riia poole oma vanemaid vaatama... ; Mardi Lutheruse päeval ; Jaagu laul. Ta istub üksi mäe peal

  17. Las fases de la luna, ¿Cómo y cúando enseñarlas? Phases of the moon: how and when teach them?

    Directory of Open Access Journals (Sweden)

    Alicia Kriner

    2004-01-01

    Full Text Available Este artículo analiza diversos componentes del contenido "las fases de la Luna", un contenido complejo de enseñar y difícil de aprender debido al alto grado de abstracción de los conceptos y el conocimiento espacial que requiere. Para ello, se detallan los conocimientos que permiten la comprensión del fenómeno de las fases de la Luna, se exponen las ideas erróneas más habituales que tienen los individuos, tanto los adultos como los niños, se proponen actividades didácticas para la enseñanza de este contenido y se examina el tratamiento que se le da al tema en algunos textos escolares y en algunos diseños curriculares.This article analyses different aspects of the content "Phases of the Moon", content that is complex to teach and difficult to learn on account of the high degree of abstraction of the concepts and the spatial understanding that it requires. In this work the facts that allow the understanding of the phases of the Moon aredescribed. The most common misconceptions found in adults and children are defined, and didactic activities for this content teaching set out and the treatment of this subject in some textbooks and some curriculum designs examined.

  18. Chronology of wrinkle ridge formation and rate of crustal shortening on Lunae Planum, Mars

    Science.gov (United States)

    Karagoz, Oguzcan; Aksoy, M. Ersen; Erkeling, Gino

    2017-04-01

    The Lunae Planum, a plain between the Tharsis Montes and the Acidalia Planitia on Mars, represents a transitional zone from a volcanic rise to a lowland plain, respectively. From West to East at N20°, topography changes from 600 m to -750 m. Here, several wrinkle ridges that are compressional tectonic features formed by folding and thrust faulting [1], mark the surficial deformation of the martian crust. From the analysis of >25 wrinkle ridges in earlier studies a total shortening of ˜1840 m and a compressive strain of 0.29% has been suggested for the Lunae Planum [2]. In this study, we investigate the chronological order of geomorphic structures and determine the timing and duration of the crustal shortening of Lunae Planum. We use remote sensing mapping techniques [3] and crater size-frequency distribution measurements (CSFD) [e.g.,4,5]. In our analyses, we use HRSC (12.5 m/pixel), CTX (6 m/pixel) and HiRISE (0.3 m/pixel) satellite images and digital terrain models to document geomorphic structures such as wrinkles ridges, impact craters, crater ejecta blankets and intermontane plains. Our CSFD measurements of wrinkle ridges reveal an age distribution from 3.9 Ga to 3.0 Ga, with surfaces getting younger towards the East. Our findings are in accordance with earlier observations of greater shortening amounts towards the West (in older ridges) [2]. The age distribution of wrinkle ridges suggests a 9 Ma time interval for the proposed 1840 m horizontal shortening at a deformation rate of 2.04 x 10-3 mm/yr for compressional deformation on the Lunae Planum. [1] Watters, T.R., 2004, Elastic dislocation modeling of wrinkle ridges on Mars, Icarus, 171, 284-294. [2] Plescia, J.B., 1991.Wrinkle ridges in Lunae Planum, Mars: implications for shortening and strain. Geophys. Res. Lett. 18, 913-916. [3] Greeley, R. and Guest, J.E., 1987. Geologic map of the eastern equatorial region of Mars. USGS Miscellaneous Investigations Series Map. [4] Hartmann, W. K., and Neukum, G

  19. PLÁTANO MACHO (Musa aab, CÁRDENAS, TABASCO, MÉXICO

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    Eder Ramos-Hern\\u00E1ndez

    2011-01-01

    Full Text Available Este experimento se realizó en Cárdenas, Tabasco, México en un suelo con textura franca, pH moderadamente ácido, contenido de materia orgánica y nitrógeno total bajo, cultivado con plátano macho, con el objetivo de determinar el control de arvenses con A. pintoi en una plantación de plátano macho. Se utilizó un arreglo factoria l alojado en un diseño de bloques completos al azar, con sombreado y tip o de cobertura vegetal asocia da al plátano como factores, con tres repe ticiones (octubre 2008-agosto 2009. Tanto el factor sombreado como el factor cobertura tuvie ron dos niveles de porcentaje: 45 (s= ± 11,1 y 50 (s= ± 13,2% de sombra, para suelos con arvenses y, con A. pintoi, respectivamente. Se utilizaron los índices de Shannon-Wie ver (H´ y similitud de Sörensen (S para determinar la riqueza de especie s. A los once meses después de establecido el experimento los valores de H´ no mostrarondiferencias significativas entre los tratamientos, S= 0,8 entre los dos niveles de sombra. Las especie s arvenses dominantes fueron: T. triangulare, S. podophylum, P. paniculatum y C. diffusa. Entre los tratamie ntos probados, el de suelo con arvenses a nivel de 50% de sombra fue el que presentó (p=0,05 mayor producción MS (375,3 ± 83,3 g/m2. La MS producida por A. pintoi fue mayor (p=0,05 con 45% (s= ± 11,1 de sombra (198 g/m2 que la producida a 50% (s= ± 13,2 sombra (150,4 g/m2. Se encontró que el nivel de efectividad de A. pintoi para controlar arvenses fue de 52,3% (con 45 ± 11,1% de sombra y 70,5% (con 50 ± 13,2% sombra.

  20. Mirmecofauna asociada con sistemas agroforestales en el Corredor Biológico Mesoamericano en Tabasco, México Mirmecofauna associated with agroforestry systems in the Mesoamerican Biological Corridor in Tabasco, Mexico

    Directory of Open Access Journals (Sweden)

    Noel A. González-Valdivia

    2013-03-01

    Full Text Available Se evaluaron la riqueza, la abundancia y la distribución de hormigas como indicadores para monitoreo ecológico en los sistemas agroforestales en 3 regiones dentro del Corredor Biológico Mesoamericano en Tabasco, México. Los sistemas agroforestales (SAF analizados fueron de árboles en linderos (AL y de árboles dispersos en potreros (ADP. El estudio establece una línea de base para evaluar el estado de conservación de este grupo biológico en SAF de las regiones prioritarias para el Corredor Biológico Mesoamericano (municipios de Huimanguillo, Tacotalpa y Tenosique. Se recolectaron 52 792 ejemplares, pertenecientes a 131 especies, asignadas a 7 subfamilias. Se presentan 32 especies como nuevos registros y 7 morfoespecies catalogadas como affinis para Tabasco. La riqueza total para ADP consistió en 16 (±6 especies en Tenosique, 19 (±6 en Huimanguillo y 20 (±4 en Tacotalpa. La riqueza de especies para AL fue de 20 (±5 especies en Tenosique, 21 (±5 en Huimanguillo y 21 (±4 en Tacotalpa. La diversidad de la mirmecofauna en ADP fue de 1.52 (±0.36 en Tenosique, 0.84 (±0.49 en Huimanguillo y de 1.35 (±0.44 en Tacotalpa. La diversidad en AL se estimó en 1.87 (±0.36 en Tenosique, 1.06 (±0.55 en Huimanguillo y 1.33 (±0.45 en Tacotalpa. La dominancia de especies tanto en AL como ADP de las 3 regiones fue D > 0.26. Las comunidades no se distribuyeron equitativamente y la mayor homogeneidad fue alcanzada en Tenosique (J≥ 0.57 en ADP y 0.63 en AL, respectivamente. La composición de hormigas difirió entre sistemas y regiones. Ninguna especie se detectó como indicadora, ya que éstas utilizan ampliamente todos estos agroecosistemas.Myrmecofaunal richness, abundance and distribution were studied as indicators for ecological monitoring of agroforestry systems (SAF in 3 regions in the Mesoamerican Biological Corridor of Tabasco, Mexico. The agroforestry systems analyzed were linearly arranged trees (AL and scattered trees on pastures (ADP

  1. Implantación y evolución de la encomienda en la provincia de Tabasco, 1522-1625

    Directory of Open Access Journals (Sweden)

    Jiménez Abollado, Francisco L.

    2000-06-01

    Full Text Available El presente trabajo intenta analizar la evolución de una institución como la encomienda en la Provincia de Tabasco, desde su implantación en 1522 hasta el primer cuarto del siglo XVII. Se hace hincapié en la importancia de dicha institución la de mayor atractivo socio-económico para la escasa población española asentada en la provincia, debido al carácter fronterizo y marginal de la misma, y a la escasez de otros incentivos económicos. Asimismo, se examinan algunos aspectos como la incorporación de pueblos a la Real Corona y la política de “ayudas de costa”, como fuentes de compensación para aquellos pobladores y descendientes de conquistadores que no poseían encomiendas.

  2. Familia y empoderamiento femenino: ingresos, trabajo doméstico y libertad de movimiento de mujeres chontales de Nacajuca, Tabasco

    Directory of Open Access Journals (Sweden)

    María de los Ángeles Pérez Villar

    2009-01-01

    tres aspectos de dicha dimensión: la posibilidad de manejar ingresos propios; la capacidad de negociación de la carga de trabajo doméstico; la libertad de movimiento fuera de casa para realizar actividades extradomésticas. Para lograr este objetivo, se efectuaron entrevistas a profundidad con 27 mujeres indígenas que conforman el Fondo Re gional de Mujeres Chontales de Tabasco (FRMCh. Se construyó una tipología de familias para analizar estos tres aspectos de acuerdo con la composición y ciclo de vida de cada fa milia. Los resultados evidenciaron la capacidad de las mujeres para negociar cambios en el manejo de ingresos y en la libertad de movimiento, pero no en la redistribución del trabajo doméstico. En las conclusiones se reflexiona sobre estos hallazgos a partir de los resultados obtenidos en trabajos similares.

  3. Chemostratigraphic correlation of the source rock and definition of the La Luna-K/T Petroleum System in southwestern Venezuela

    Energy Technology Data Exchange (ETDEWEB)

    Callejon, A.F.; Lander, R. [Exploration Management (Venezuela); Briceno, H.; Ostos, M.; Yoris, F. [Estudios de Ingenieria, Caracas (Venezuela); Talukdar, S. [Core Labs., Inc., Irving, TX (United States)

    1997-09-01

    The main source of oil in the Maracaibo and Barinas-Apure Basin in Venezuela are the Cretaceous rocks of the La-Luna Formation. Studies were conducted to define the petroleum system operating in this area. Samples were analyzed for COT, Rock-Eval pyrolysis and several elements using inductive coupled plasma. Oxides were analyzed by x-ray fluorescence and loss of ignition. Calculations of the chemical accumulation rate differences (CARD plots) of several elements were used to correlate cyclic events in the La-Luna and La-Morita sections. Oils from seeps expelled at the peak of oil generation were found to have been derived from marine sources and genetically correlated to La-Luna.

  4. Bionomics data and descriptions of the immatures of Calyptocephala gerstaeckeri Boheman (Coleoptera: Chrysomelidae), pest of the oil palm (Elaeis guineensis J.) and camedor palm (Chamaedorea elegans Mart.) (Arecaceae) in Tabasco, Mexico; Datos bionomicos y descripcion de los inmaduros de Calyptocephala gerstaeckeri Boheman (Coleoptera: Chrysomelidae), plaga de la Palma Aceitera (Elaeis guineensis J.) y de la Palma Camedor (Chamaedorea elegans Mart.) (Arecaceae) en Tabasco, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Cordova-Ballona, Leonides [Universidad Popular de la Chontalpa, Tabasco (Mexico); Sanchez-Soto, Saul [Colegio de Postgraduados, Tabasco (Mexico). Campus Tabasco

    2008-11-15

    Characters of the external morphology of egg, larval instars and pupae of Calyptocephala gerstaeckeri Boheman, insect pest of oil palm (Elaeis guineensis J.) and camedor palm (Chamaedorea elegans Mart.) in the State of Tabasco, Mexico, are described and illustrated. Some bionomics data are also presented. The specie was reared in the laboratory on young oil palm plants. (author)

  5. Simulation of the concentration of SO{sub 2} issued by major stationary sources in 2003 in northwestern Chiapas and central Tabasco, Mexico; Simulacion de la concentracion de SO{sub 2} emitido por fuentes fijas mayores durante 2003 en el noroeste de Chiapas y centro de Tabasco, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Valdes Manzanilla, Arturo [Division Academica de Ciencias Biologicas, UJAT, Villahermosa, Tabasco (Mexico)]. E-mail: avmanzanilla@hotmail.com; Fernandez Garcia, German [Universidad Autonoma de Guadalajara Campus Tabasco, Villahermosa, Tabasco (Mexico); Ramos Herrera, Sergio [Division Academica de Ciencias Biologicas, UJAT, Villahermosa, Tabasco (Mexico); Bautista Margulis, Raul G. [Division Academica de Ciencias Biologicas, UJAT, Villahermosa, Tabasco (Mexico)

    2008-05-15

    The CALPUFF dispersion model was used to simulate the spatial distribution of the SO{sub 2} emitted by Petroleos Mexicanos (PEMEX) gas-processing complexes in Cactus, NW Chiapas, Nuevo PEMEX and Ciudad PEMEX, in central Tabasco, during 2003. It was found that the zone with the highest concentrations of SO{sub 2} is located SW from the PEMEX facilities. The zone, where the World Health Organization's norm for SO{sub 2} is surpassed (20 {mu}g/m{sup 3}), includes the city of Reforma, Chiapas and Ciudad PEMEX, Tabasco. [Spanish] El modelo de dispersion CALPUFF fue usado para simular la distribucion espacial de la concentracion de SO{sub 2} emitido por los complejos procesadores de gas de Petroleos Mexicanos (PEMEX) en Cactus, en el noroeste de Chiapas, Nuevo PEMEX y Ciudad PEMEX, en el centro de Tabasco, durante 2003. Se encontro que la zona con mayor concentracion de SO{sub 2} esta localizada al suroeste de las instalaciones de la empresa petrolera. La zona, donde la norma de la Organizacion Mundial de la Salud para el SO{sub 2} es sobrepasada (20 {mu}g/m{sup 3}), incluye la ciudad de Reforma, Chiapas y Ciudad PEMEX, Tabasco.

  6. The Economic Life of the Negritos of Luna, Apayao

    Directory of Open Access Journals (Sweden)

    Ronald O. Ocampo

    2014-02-01

    Full Text Available This study was conducted to document the economic activities of the Negritos of Lower Apayao. Specifically, it is intended to determine the economic activities of the Negritos of Lower Apayao; and determine coping strategies of the negritos for survival. The descriptive method of research was used with interview and observation as main data-gathering tools. Respondents of were 24 Negrito families however, key informants were also identified for the purpose of validating data generated from observations and interviews. Results showed that the economic activities done by the negritos are: foraging, hunting, fishing, paid labor, backyard hog and poultry raising, basket weaving, and upland farming. Their income derived from their daily economic activities is just sufficient for their daily existence. In order to survive, they have varied coping strategies which include caroling, mixing rice with cassava/ other rootcrops, simple living, bartering, engaging in other livelihood activities and getting acquaintance with other cultural groups to work with them in their farms.

  7. Bioinspired micrograting arrays mimicking the reverse color diffraction elements evolved by the butterfly Pierella luna.

    Science.gov (United States)

    England, Grant; Kolle, Mathias; Kim, Philseok; Khan, Mughees; Muñoz, Philip; Mazur, Eric; Aizenberg, Joanna

    2014-11-04

    Recently, diffraction elements that reverse the color sequence normally observed in planar diffraction gratings have been found in the wing scales of the butterfly Pierella luna. Here, we describe the creation of an artificial photonic material mimicking this reverse color-order diffraction effect. The bioinspired system consists of ordered arrays of vertically oriented microdiffraction gratings. We present a detailed analysis and modeling of the coupling of diffraction resulting from individual structural components and demonstrate its strong dependence on the orientation of the individual miniature gratings. This photonic material could provide a basis for novel developments in biosensing, anticounterfeiting, and efficient light management in photovoltaic systems and light-emitting diodes.

  8. Puente sobre el embalse de Barrios de Luna /León/España

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    López Sáiz, José Manuel

    1984-05-01

    Full Text Available The bridge Carlos Fernández Casado covers the principal arm of the reservoir of Barrios de Luna, at the height of the former bridge of San Pedro de Luna, today covered by high waters. It is a suspension bridge with 440 m of space between its towers, with lateral bays each of 65 m. In carrying out the work the following phases were contemplated: — Counterweights. — Towers. — Braces. — Lintel. — Suspension. — Construction of the board. — Auscultation and control. The bridge is articulated in the center and with free longitudinal movement in order to permit the movements produced by retraction, flow and dilatation. This situation demands the carrying out, in the center of the bay, of a cap which permits vertical gyrations and horizontal displacements along the axle of the bridge and which prevents the rest of the movements. Both the project and the construction have been directed not only toward a viable construction from the point of view of resistance but also to obtain a balanced and esthetic work for the users of the highway.El puente Carlos Fernández Casado salva el brazo principal del embalse de Barrios de Luna, a la altura del antiguo pueblo de San Pedro de Luna, hoy inundado en aguas altas. Se trata de un puente atirantado de 440 m de luz entre sus torres, con vanos laterales de 65 m cada uno. En su ejecución se han contemplado las siguientes fases: — Contrapesos. — Torres. — Riostras. — Dintel. — Tirantes. — Construcción del tablero. — Auscultación y control. El puente está articulado en el centro y con libre movimiento longitudinal para permitir los movimientos producidos por retracción, fluencia y dilatación. Esta situación exige la ejecución, en el centro del vano, de una rótula que permita giros verticales y desplazamientos horizontales a lo largo del eje del puente y que impida el resto de los movimientos. Tanto el proyecto como la construcción se han

  9. Embryonic and larval development of Eugerres mexicanus (Perciformes: Gerreidae in Tenosique: Tabasco, Mexico

    Directory of Open Access Journals (Sweden)

    Raúl E Hernández

    2012-03-01

    Full Text Available Most studies on Eugerres mexicanus mainly consider biogeographic and systematic aspects and rarely address reproductive characteristics, which are useful for fishery population management plans. This study aimed at evaluating the ontogeny of E. mexicanus, based on 30 embryos and 30 larvae sampled by induced spawning of breeders, taken in February 2009 from the Usumacinta River in Tenosique, Tabasco, Mexico. All descriptions of the embryonic development were based on morphometric and meristic data and followed standard methods. Eggs, recovered at the gastrula stage, had an average diameter of 1.17mm (SD=0.08. The bud stage appeared during the first three hours of development, in which the posterior side was adhered to the vitellus; Kupffer´s vesicle was visible. Yolk-sac larvae hatched 18 hours after fertilization, exhibiting a light brown color and an average total length of 2.94mm (SD=0.70; the preflexion stage was reached eight days after hatching, with a total average length of 4.67mm (SD=0.50 and a total notochord length of 4.45mm (SD=0.50. The flexion stage was reached on the 16th day, with an average total length of 6.66mm (SD=1.53, while postflexion was reached on the 24th day, with 10.33mm (SD=1.45. The pre-juvenile stage was reached on the 33rd day, with a total length of 14.30mm (SD=0.93, showing IX spines and 10 rays and III spines and eight rays in the dorsal and anal fins, respectively. The juvenile stage was reached by the 45th day, with an average length of 28.16mm (SD=1.93 and average weight of 4.75g (SD=1.49. Prejuveniles showed an initial pigmentation with dark colored dots in the superior and inferior jaw and dispersed on the head, while juveniles presented the same pigmentation pattern, decreasing towards the margin of the caudal peduncle. In conclusion, the embryonic developmental stages of E. mexicanus were typical for the Gerreidae group. However, their morphometric characters were slightly different since the diameter

  10. Luna: What Did We Learn and What Should We Expect?

    Science.gov (United States)

    Wallace, William T.

    2009-01-01

    This presentation presents a look at the space program's background prior to lunar exploration and highlights the Apollo program and lessons learned from lunar exploration. The possibilities of exposures and difficulties attributed to lunar dust are described, including obscured vision, clogged equipment, coated surfaces, and inhalation, among others. A lunar dust simulant is proposed to support preliminary studies. Lunar dust is constantly activated by meteorite lunar dust, UV radiation and elements of solar wind - this active dust could produce reactive species. Methods of deactivation must be determined before new lunar missions, but first we must understand how to reactivate dust on Earth. Activation methods tested and described here include crushing/grinding or UV activation. Grinding time has a direct effect on amount of hydroxyl radicals produced upon addition of ground quartz to a solution. An increase in hydroxyl production was also seen for a lunar simulant with increased grinding.

  11. La paridad de género en las elecciones locales 2015 de Tabasco, Estado de México y Distrito Federal

    Directory of Open Access Journals (Sweden)

    Rafael Cedillo Delgado

    2016-01-01

    Full Text Available Se examina el cumplimiento de la cuota de género en tres entidades donde se efectuaron elecciones locales en 2015: Tabasco, Distrito Federal y Estado de México. Con la reciente incorporación de la paridad de género, que exige a los partidos políticos incluir candidaturas del 50% para ambos sexos, se ilustran las prácticas e interpretaciones que hacen los partidos políticos y órganos electorales en la aplicación de dicha medida. Se destaca que en Tabasco se logró la paridad en la integración del Congreso local, en contraste con lo ocurrido en el Distrito Federal y en el Estado de México.

  12. La economía de Tabasco y su impacto en el crecimiento urbano de la ciudad de Villahermosa (1960-2010

    Directory of Open Access Journals (Sweden)

    Jorge Luis Capdepont Ballina

    2014-01-01

    Full Text Available Se analizan los procesos económicos recientes de Tabasco y su impacto en el crecimiento demográfico y urbano de la ciudad de Villahermosa. La transformación de la economía de Tabasco y su capital tras el descubrimiento de yacimientos de hidrocarburos en el último tercio del siglo XX ocasionó el incremento del índice demográfico y la expansión de la mancha urbana de la ciudad hacia terrenos aptos para la construcción de viviendas y hacia áreas de amortiguamiento o terrenos bajos inundables. Este proceso ha impactado en el ambiente y ha creado condiciones de vulnerabilidad física en los nuevos asentamientos.

  13. Valoración de la Infraestructura de los Edificios Religiosos para el Turismo Accesible en Villahermosa, Tabasco, México

    OpenAIRE

    Lidia Guillén Valencia; Aurelio Ramón García

    2015-01-01

    Los turismos religioso y accesible han promovido conciencia social, aprendizaje y salud en todos sus aspectos, y han generado una considerable derrama económica debido al desplazamiento masivo de sus practicantes. No obstante, el turismo accesible ha encontrado una serie de obstáculos arquitectónicos para acceder a los templos. Por tal razón, fueron valorados antropometricamente los edificios religiosos de Villahermosa, Tabasco, México, para determinar si su infraestructura es incluyente con ...

  14. Las Lunas (Yuncler, Toledo. A Bronze Age hoard with metallic materials from the southern Iberian Meseta

    Directory of Open Access Journals (Sweden)

    Urbina Martínez, Dionisio

    2010-06-01

    Full Text Available Here we present the results of the preliminary study carried out on a new group of metallic materials of the Final Bronze Age, recovered at the end of 2008 in the archaeological excavations at the settlement of Las Lunas (Yuncler, Toledo, Spain. Its geographical situation far away from the main zones of distribution of this type of finds, the singularity of the materials, and the evidence of Atlantic and Mediterranean relations make these materials a remarkable sample for the study of the Final Bronze Age in the centre of the Iberian Peninsula.

    Se exponen los resultados del primer estudio realizado sobre un nuevo conjunto de materiales metálicos del Bronce Final recuperado a finales de 2008 en las excavaciones arqueológicas del yacimiento de Las Lunas (Yuncler, Toledo, España. La localización geográfica del hallazgo, lejos de las principales zonas de dispersión conocidas para este tipo de conjuntos, la singularidad de los objetos que integra, y las relaciones atlánticas y mediterráneas que evidencian sus materiales, lo convierten en un ejemplo destacado para el estudio de este período en el centro de la Península Ibérica.

  15. Judíos de Belchite en el denominado «Libro de la escribanía de don Federico de Aragón, conde de Luna» (1422-1425)

    OpenAIRE

    Aparici Martí, Joaquín

    2011-01-01

    The lack of documentary local sources has hindered until here our knowledge of the Jews of the Aragonese town of Belchite, belonging to the count of Luna. By using a manuscript notarial notebook –that had been inaccurately ascribed to a “seigniorial notary’s office of Federico de Aragon”– preserved in the City Archives of Segorbe, the author identifies several Jews living in the town in the 1420s and provides mention of their activities. Some of these Jews are featured in the Hebrew poems by ...

  16. Produção de pimenta tabasco com aplicação de CO2, utilizando-se irrigação por gotejamento = Tabasco pepper production with CO2 application using drip irrigation

    Directory of Open Access Journals (Sweden)

    Fabiana Luiza Matielo de Paula

    2011-01-01

    Full Text Available A aplicação de CO2 via água de irrigação produz o rebaixamento do pH da solução do solo, causando variações na mobilidade dos nutrientes e consequentes efeitos na absorção. O objetivo deste trabalho foi analisar os efeitos de doses de dióxido de carbono (CO2, aplicadas via irrigação por gotejamento, na produção da pimenta Tabasco. O delineamento experimental foi o de blocos casualizados com quatro tratamentos e oito repetições. Os tratamentos foram quatro doses de CO2: 0 (T1, 451,95 (T2; 677,93 (T3 e 903,92 (T4 kg ha-1. Os frutos foram pesados e contados; o comprimento e o diâmetro de frutos foram obtidos com a média de 20 frutos por planta. Ocorreu efeito quadrático (p Application of CO2 through water reduces the soil solution pH, causing variations in nutrient mobility and consequent effects on the absorption. The objective of this study was to analyze the effects of carbon dioxide rates supplied by drip irrigation in the production of Capsicum frutescens L. crop. A randomized block design with four treatments and eight replications was used. The treatments were four rates of CO2: 0 (T1, 451.95 (T2; 677.93 (T3 and 903.92 (T4 kg ha-1. The fruits were counted and weighed; the length and the diameter were obtained from an average of 20 fruits per plant, randomly taken, from each treatment in the plot. The quadratic effect (p < 0.01 occurred for CO2 on the yield and there was quadratic effect (p < 0.05 of the rates on the number of fruits. There were no effects of CO2 rates on the green matter, dry matter and fruit length and diameter. The T2 treatment provided greater yield and higher number of fruits per plant with an increase of 16 and 26%, respectively in relation to T1 (without CO2. CO2 application favored the increase in the yield because of the greater number of fruits per plant in the Tabasco pepper crop.

  17. Micromicetos del suelo de una plantación de plátano (Musa paradisiaca en Teapa, Tabasco, México Soil microfungi from a banana (Musa paradisiaca plantation in Teapa, Tabasco, Mexico

    Directory of Open Access Journals (Sweden)

    Mariana Del Olmo-Ruiz

    2010-04-01

    Full Text Available Se analizó la micobiota presente en el suelo de un cultivo de plátano (Musa paradisiaca L. en el municipio de Teapa en el estado de Tabasco, México. Los objetivos fueron conocer las especies habitantes de este suelo y la dinámica de la comunidad con respecto a la composición de especies a lo largo de un año. Se llevaron a cabo 4 muestreos durante temporadas distintas y los aislamientos se realizaron mediante la técnica de dilución en placa. Se recuperaron 91 colonias, correspondientes a 30 especies diferentes de hongos mitospóricos, de las cuales únicamente Aspergillus flavus Link, Fusarium nivale (Fr. Ces y Trichoderma harzianum Rifai fueron especies residentes de ese suelo y el resto, esporádicas. El índice de similitud de Sorensen evidenció una sucesión de especies entre las temporadas de muestreo. Del total de especies determinadas en este estudio, 8 no habían sido encontradas como habitantes de suelos mexicanos. Asimismo, se mostró que el suelo analizado es un hábitat muy rico en micromicetos y que es necesario incrementar los esfuerzos de colecta para tener un mayor conocimiento sobre la diversidad en nuestro país.In this study, we analyzed the soil microfungal community from a banana (Musa paradisiaca L. plantation in Teapa, a municipality of Tabasco State in Mexico. The objectives were to determine the fungal species present and to analyze the community composition throughout an entire year. We performed 4 samplings during different seasons and the fungal isolates were recovered using the dilution plate technique. We isolated 91 strains from 30 different mitosporic species where only Aspergillus flavus Link, Fusarium nivale (Fr. Ces and Trichoderma harzianum Rifai were considered as resident species while the remaining species were sporadic. The Sorensen similarity index suggested that species succession had occurred among the sampling seasons. From all the species identified in this survey, 8 had not been found as

  18. Prevalencia de infección por el virus del Nilo Occidental en dos zoológicos del estado de Tabasco Prevalence of West Nile Virus infection in animals from two state zoos Tabasco

    Directory of Open Access Journals (Sweden)

    M Hidalgo-Martínez

    2008-02-01

    Full Text Available OBJETIVO: Determinar la prevalencia de infección por el virus del Nilo Occidental (VNO en animales, mosquitos y personal que labora en dos zoológicos del estado de Tabasco, en México. MATERIAL Y MÉTODOS: Con la utilización de ELISA de bloqueo se detectaron anticuerpos en sueros de animales: se buscó un fragmento del genoma del VNO por RT-PCR en el suero de animales, empleados y mosquitos. RESULTADOS: En el zoológico "La Venta" se encontró una seroprevalencia de 25.67% (19/74 en aves y de 85.71% (6/7 en reptiles. En el zoológico "Yum-Ká", 31.25% (50/160 de las aves y 34.48% (16/29, de los mamíferos, tuvieron anticuerpos contra el VNO. En un grupo de mosquitos (Culex quinquefasciatus se detectó el genoma del virus. CONCLUSIONES: La detección de anticuerpos contra el VNO en animales de ambos zoológicos y del genoma viral en mosquitos demuestra la presencia del virus, lo cual representa un riesgo potencial de infección para animales y humanos.OBJECTIVE: To determine the prevalence of West Nile Virus (WNV infection in animals, mosquitoes and employees from two zoos of Tabasco state, Mexico. MATERIAL AND METHODS: WNV antibodies were detected by blocking ELISA in serum samples from animals. Viral RNA was detected by RT-PCR from mosquitoes and serum samples from employees at "Yum-Ká" zoo. RESULTS: Seroprevalence in birds was 25.65% (19/74 and 85% (6/7 in reptiles from "La Venta" zoo. Thirty-one percent of birds (50/160 and 34.48% mammals (16/29 at the "Yum-Ká" zoo, were seropositive. All human serum samples from Yum-ká zoo were negative by RT-PCR. A pool of mosquitoes (Culex quinquefasciatus was positive for WNV. CONCLUSIONS: The presence of WNV antibodies in animals from both zoos and the detection of viral genome in mosquitoes demonstrate the presence of WNV in this region and indicates a potential risk of infection in animals and humans.

  19. THE 2H(alpha, gamma6LI REACTION AT LUNA AND BIG BANG NUCLEOSYNTHETIS

    Directory of Open Access Journals (Sweden)

    Carlo Gustavino

    2013-12-01

    Full Text Available The 2H(α, γ6Li reaction is the leading process for the production of 6Li in standard Big Bang Nucleosynthesis. Recent observations of lithium abundance in metal-poor halo stars suggest that there might be a 6Li plateau, similar to the well-known Spite plateau of 7Li. This calls for a re-investigation of the standard production channel for 6Li. As the 2H(α, γ6Li cross section drops steeply at low energy, it has never before been studied directly at Big Bang energies. For the first time the reaction has been studied directly at Big Bang energies at the LUNA accelerator. The preliminary data and their implications for Big Bang nucleosynthesis and the purported 6Li problem will be shown.

  20. Los estereotipos del pintor exiliado Rodríguez Luna y su museo en Montoro

    OpenAIRE

    Cabañas Bravo, Miguel

    2009-01-01

    Estas páginas se centrarán en el pintor cordobés Antonio Rodríguez Luna (Montoro, 1910-Córdoba, 1985) y el pequeño museo que se le dedicó en su pueblo natal, Montoro, tres años antes de su muerte, esto es en 1982. Son una nueva vuelta de tuerca sobre las investigaciones dedicadas a este pintor español exiliado en México y su (re-)conocimiento. Así, se atiende tanto a la trayectoria del creador exiliado en México y su singular creación de estereotipos –la cual había sido precedida de una impor...

  1. Feasibility of low energy radiative capture experiments at the LUNA underground accelerator facility

    CERN Document Server

    Bemmerer, D; Lemut, A; Bonetti, R; Broggini, C; Corvisiero, P; Costantini, H; Cruz, J; Formicola, A; Fülöp, Z; Gervino, G; Guglielmetti, A; Gustavino, C; Gyürky, G; Imbriani, G; Jesus, A P; Junker, M; Limata, B; Menegazzo, R; Prati, P; Roca, V; Rogalla, D; Rolfs, C; Romano, M; Alvarez, C R; Schumann, F; Somorjai, E; Straniero, O; Strieder, F; Terrasi, F; Trautvetter, H P; Vomiero, A; Fulop, Zs.; Gyurky, Gy.

    2005-01-01

    The LUNA (Laboratory Underground for Nuclear Astrophysics) facility has been designed to study nuclear reactions of astrophysical interest. It is located deep underground in the Gran Sasso National Laboratory, Italy. Two electrostatic accelerators, with 50 and 400 kV maximum voltage, in combination with solid and gas target setups allowed to measure the total cross sections of the radiative capture reactions $^2$H(p,$\\gamma$)3He and $^{14}$N(p,$\\gamma$)$^{15}$O within their relevant Gamow peaks. We report on the gamma background in the Gran Sasso laboratory measured by germanium and bismuth germanate detectors, with and without an incident proton beam. A method to localize the sources of beam induced background using the Doppler shift of emitted gamma rays is presented. The feasibility of radiative capture studies at energies of astrophysical interest is discussed for several experimental scenarios.

  2. ESTADO DEL CONOCIMIENTO DEL NIVEL EDUCATIVO BÁSICO EN TABASCO GENERADO POR PROFESORES FORMADOS EN POSGRADOS

    Directory of Open Access Journals (Sweden)

    Verónica García Martínez

    2015-01-01

    Full Text Available Se presenta un reporte de investigación sobre el estado del conocimiento de las obras generadas por profesores que cursaron un posgrado y desarrollaron un trabajo de investigación sobre educación básica (que en México va de preescolar a secundaria, en el Estado de Tabasco, México, durante la década de 2001 a 2011. Esta demanda emanó del Gobierno del Estado, el cual buscaba recuperar el conocimiento producido en ese nivel, ya que es el menos atendido en la investigación educativa nacional. Para tal fin se realizó un análisis del contenido de las producciones ubicadas en las instituciones que ofrecen posgrados en educación en la entidad. Se analizaron 294 obras, en su mayoría tesis, de las cuales el 67% fueron escritas por mujeres, en un contexto geográfico institucional (74%, con una marcada preferencia por la metodología cualitativa y el área de Aprendizaje y Desarrollo Humano (43%. Se concluye que la orientación de la obra es mayor hacia el análisis pedagógico por la adscripción de los autores, y una perspectiva micro social, puesto que se realiza dentro de los mismos espacios de trabajo.

  3. PRODUCTIVITY MANAGEMENT ANALYSIS OF CACAO AGRO-FOOD SYSTEM IN TABASCO, MEXICO: AN APPLICATION OF THE ‘FITNESS’ APPROACH

    Directory of Open Access Journals (Sweden)

    César J. Vázquez Navarrete

    2014-04-01

    Full Text Available Survival of agro-food systems are challenging and require a fresh approach to analyse. Application of ‘productivity management’ perspective extends the conventional view of ‘productivity’ as it incorporates both ‘efficiency (creation of value’ and ‘effectiveness (attraction of value’ criteria into a firm’s organisational configurations (set of strategies to achieve success. We apply a ‘fitness’ approach to examine productivity performance of 356 cacao farmers in Tabasco, Mexico. Results reveal that both ‘factors’ and ‘aspects’ of organisational configurations are significantly positively correlated with the performance indicators. Also, 14 of the 20 productivity management elements are significantly correlated with the performance indicators with three elements (‘participation in organic cacao production’, ‘farmer’s schooling’, and ‘price setting’ exerting strongest influence. Results also show that a set of fittest solutions, rather than a unique solution, exist amongst cacao farmers. The key policy implication is that both ‘efficiency’ and ‘effectiveness’ are valid strategies to cope with the challenging and competitive agro-food system environment. Policy makers should be aware of a set of solutions (fitness landscape instead of just focusing on a unique solution.

  4. Estado del conocimiento del nivel educativo básico en tabasco generado por profesores formados en posgrados

    Directory of Open Access Journals (Sweden)

    García Guzman, Verónica

    2015-05-01

    Full Text Available Se presenta un reporte de investigación sobre el estado del conocimiento de las obras generadas por profesores que cursaron un posgrado y desarrollaron un trabajo de investigación sobre educación básica (que en México va de preescolar a secundaria, en el Estado de Tabasco, México, durante la década de 2001 a 2011. Esta demanda emanó del Gobierno del Estado, el cual buscaba recuperar el conocimiento producido en ese nivel, ya que es el menos atendido en la investigación educativa nacional. Para tal fin se realizó un análisis del contenido de las producciones ubicadas en las instituciones que ofrecen posgrados en educación en la entidad. Se analizaron 294 obras, en su mayoría tesis, de las cuales el 67% fueron escritas por mujeres, en un contexto geográfico institucional (74%, con una marcada preferencia por la metodología cualitativa y el área de Aprendizaje y Desarrollo Humano (43%. Se concluye que la orientación de la obra es mayor hacia el análisis pedagógico por la adscripción de los autores, y una perspectiva micro social, puesto que se realiza dentro de los mismos espacios de trabajo.

  5. La migración en la frontera Petén-Tabasco, desde la perspectiva del Trabajo Social y los derechos humanos

    Directory of Open Access Journals (Sweden)

    Héctor Joaquín Bolio Ortiz

    2017-05-01

    Full Text Available Este artículo caracteriza la situación de vulnerabilidad y exclusión social de los migrantes indocumentados que cruzan la frontera Petén-Tabasco en el sur de México, (Puerto fronterizo Petén-Tabasco. Partiendo de la aplicación de las autoridades en materia de respeto a los derechos humanos. Asimismo, tiene como objetivo ubicar la posición del Trabajo Social para con las poblaciones vulnerables de migrantes indocumentados. Resultado: La migración es una disciplina que entra a escena cuando no hay trabajadores sociales en las diferentes dependencias migratorias y en la casa del migrante “la 72” (en el cruce fronterizo con Tenosique. Conclusión: la propuesta integra sus principios y fines a partir de la observación de los abusos y exclusiones detectadas en la zona para con los migrantes, y realiza recomendaciones con la finalidad del mejoramiento de la vida de estas comunidades. This article aims to contribute to an overview of the situation of vulnerability and social exclusion of undocumented migrants crossing the Petén-Tabasco border in southern Mexico. Starting from the application and the many o little professionalization that the authorities have in respect of human rights. The objective of this paper is to locate the position of Social Work with vulnerable populations of undocumented migrants, this discipline comes on the scene when it is seen that there are no social workers in the different migratory units and in the migrant's house "la 72 "(At the border crossing with Tenosique. Therefore, the proposal is to integrate its principles and aims from the observation of the abuses and exclusions detected in the area towards migrants, and make recommendations for the purpose of improving the lives of these communities.

  6. Fractura de cadera en adultos mayores: prevalencia y costos en dos hospitales. Tabasco, México, 2009 Hip fracture in older adults: prevalence and costs in two hospitals. Tabasco, Mexico, 2009

    Directory of Open Access Journals (Sweden)

    Elsy del Carmen Quevedo-Tejero

    2011-09-01

    Full Text Available Objetivos. Determinar la prevalencia y costos directos de atención de fractura de cadera en adultos mayores derechohabientes usuarios de los hospitales de referencia del Instituto Mexicano del Seguro Social (IMSS y de Petróleos Mexicanos (PEMEX en Villahermosa, Tabasco, México, en el año 2009. Materiales y métodos. Estudio transversal. La información se basó en los registros de intervenciones quirúrgicas e informes institucionales de adultos mayores hospitalizados con registro de su atención.Se realizó análisis estadístico descriptivo considerando las variables: edad, sexo,tipo de fractura de cadera, mes de ocurrencia y costo directo de atención. Resultados.De 10765 registros de adultos mayores hospitalizados se encontró 57 casos de fractura de cadera (33 en el IMSS y 24 en PEMEX. La prevalencia de fractura de cadera fue 0,5% (IMSS 1,1% y PEMEX 0,3%, siendo más frecuente en mujeres y en mayores de 69 años de edad. El tipo de fractura más frecuente fue en el cuello del fémur (78,9% del total. El costo estimado de atención médica hospitalaria por paciente fue de USD 5 803 en el IMSS y USD 11 800 en PEMEX. Conclusiones. La prevalencia de fractura de cadera fue mayor en los usuarios del IMSS. Los costos estimados de atención por paciente fueron mayores a los reportados en otras instituciones del sistema nacional de salud mexicano.Objectives. To determine hip fracture prevalence and direct healthcare costs in elderly users of the reference hospitals of the Mexican Institute of Social Insurance (IMSS by spanish initials and Mexican Oils (PEMEX by spanish initials, from Villahermosa, Tabasco, Mexico, during 2009. Materials and methods. This is a cross-sectional study. The information was based on the registers of surgical interventions and institutional reports of the elderly inpatients who had a registered attention in their institution. Descriptive statistical analysis was performed considering the following variables: age

  7. Energy alternative for the use of organic waste (swine feces) in the state of Tabasco; Alternativa energetica para el aprovechamiento de los desechos organicos (excretas de ganado porcino) en el estado de Tabasco

    Energy Technology Data Exchange (ETDEWEB)

    Ramon Garcia, E.; Angles Falconi, S.I.; Vazquez Magana, L.R.; Tun Perez, A.C. [Instituto Tecnologico de Villahermosa, Villahermosa, Tabasco (Mexico)]. Email: bioleliza_ramgar@hotmail.com; sergio_falcorp@hotmail.com

    2009-09-15

    Biogas is obtained from decomposing organic material due to the action of four types of bacteria, in the absence of oxygen: hydrolytic, producers of moncarbonate compounds and acidogenics, producing organic fatty acids and other polycarbonate compounds; acetogenic, producers of hydrogen and CO{sub 2}; homoacetogenic, that can convert a considerable amount of multicarbonate or monocarbonate compounds into acetic acid and; metanogenic, producers of methane gas, the principal component of biogas. To design and build the pilot equipment proposed for this research, a 20-liter container was used with 10 kg of swine feces with identical volumes of inoculates. The aerobic fermentation process was immediate begun, followed by the anaerobic process; metabolic reactions were conducted. A total of 0.119 m3 of biogas was obtained from the anaerobic fermentation of 10 kg of swine feces, 60% (0.0714 m{sup 3}) of which was methane gas and the remaining 40%(0.0476 m{sup 3}) hydrogen sulfide (HS). During this investigation, it was concluded that obtaining this by-product (methane biogas), which can be used as a biofuel, provides an economically and ecologically sustainable alternative that reduces organic discharges (swine feces) into rivers and reduces the energy expenditures of swine farms. Because of the high generation of RSM, the creation of a biogas production plant in Tabasco is proposed. [Spanish] El biogas se obtiene al descomponerse la materia organica debido a la accion de cuatro tipos de bacterias, en ausencia de oxigeno: las hidroliticas, que producen compuestos monocarbonados, las acidogenicas producen acidos grasos organicos y otros compuestos policarbonados; las acetogenicas productoras de Hidrogeno y CO{sub 2}; las homoacetogenicas, que pueden convertir una cantidad considerable de compuestos multicarbonados o monocarbonados en acido acetico; y las metanogenicas, productoras del gas metano, principal componente del biogas. Para el diseno y construccion del equipo

  8. Caracterización de productos tradicionales y no tradicionales derivados de cacao (Theobroma cacao L.) en el estado de Tabasco, México.

    OpenAIRE

    Naranjo González, José Alberto

    2011-01-01

    El presente trabajo se realizó en la zona de la Chontalpa del estado de Tabasco, México, que comprende los municipios de Comalcalco, Cárdenas, Huimanguillo, Jalpa de Méndez, Paraíso y Cunduacán. Dicha región es conocida como la cuna del cacao (Theobroma cacao L.) en el Estado, con una superficie sembrada de 41,025 ha. El objetivo de esta investigación fue identificar, clasificar y caracterizar fisicoquímicamente los productos no tradicionales derivados del cacao (PNTC), representativos de las...

  9. Diversidad de insectos capturados por arañas tejedoras (Arachnida: Araneae) en el agroecosistema cacao en Tabasco, México

    OpenAIRE

    Pérez-de La Cruz, Manuel; Sánchez-Soto, Saúl; Ortíz-García, Carlos F.; Zapata-Mata, Raúl; Cruz-Pérez, Aracely de la

    2007-01-01

    El objetivo de este trabajo fue el de conocer la diversidad de insectos capturados por arañas tejedoras en una plantación de cacao de 6 ha en Tabasco, México. El estudio se realizó de Julio del 2004 a Junio del 2005 mediante recolectas quincenales de los insectos capturados en las telas de las arañas. Se revisaron 3,041 telas de 54 especies de arañas pertenecientes a siete familias (Araneidae, Theridiidae, Tetragnathidae, Uloboridae, Pholcidae, Dyctinidae y Linyphiidae) que capturaron 1.749 i...

  10. Establecimiento de Arachis pintoi Krap. & Greg. como cobertura de suelo en plátano macho en Cárdenas, Tabasco

    OpenAIRE

    Ramos Hernández, Eder

    2012-01-01

    El experimento se realizó en Cárdenas, Tabasco en una plantación de plátano macho, en un suelo con textura franca, pH moderadamente ácido, contenido de materia orgánica y nitrógeno total bajo; con la finalidad de evaluar la repuesta al establecimiento de Arachis pintoi Krap. y Greg. como una cobertura viva, el cual se plantó a una distancia de 30 cm entre plantas y líneas. Se evaluaron tres porcentajes de sombra producida por la plantación de plátano macho (21, 45 y 50 %)....

  11. Arachis pintoi COMO COBERTURA DE SUELO EN CULTIVOS DE PLÁTANO MACHO (Musa AAB) EN CÁRDENAS, TABASCO, MÉXICO

    OpenAIRE

    Eder Ramos Hernández; Ángel Sol Sánchez; Armando Guerrero Peña; José J. Obrador Olán

    2011-01-01

    El experimento se realizó en Cárdenas, Tabasco enuna plantación de plátano macho, en un suelo con texturafranca, pH moderadamente ácido, contenido de materiaorgánica y nitrógeno total bajo; con la finalidad de evaluar larepuesta al establecimiento de Arachis pintoi Krap. y Greg.como una cobertura viva. El diseño experimental fue bloquescompletos al azar con tres replicas. Se evaluaron tresporcentajes de sombra producida por el cultivo de plátanomacho (21, 45 y 50 %). El establecimiento de A. ...

  12. Efecto de Arachis pintoi sobre las arvenses asociadas al plátano macho (Musa AAB ), Cárdenas, Tabasco, México.

    OpenAIRE

    Ramos-Hernández, Eder; Sol-Sánchez, Ángel; Guerrero-Peña, Armando; Obrador-Olán, José Jesús; Carrillo-Ávila, Eugenio

    2011-01-01

    Este experimento se realizó en Cárdenas, Tabasco, Méxicoen un suelo con textura franca, pH moderadamente ácido, contenido de materia orgánica y nitrógeno total bajo, cultivado con plátano macho, con el objetivo de determinar el control de arvenses con A. pintoi en una plantación de plátano macho. Se utilizó un arreglo factoria l alojado en un diseño de bloques completos al azar, con sombreado y tip o de cobertura vegetal asocia da al plátano como factores, con tres repeticiones (octubre 2008-...

  13. Caracterización morfológica de dos variedades de achiote (Bixa orellana) en el municipio de Comalcalco, Tabasco.

    OpenAIRE

    Avalos Fernández, Jesús Manuel

    2013-01-01

    El achiote, (Bixa orellana L.) es una especie botánica arborescente de las regiones intertropicales de América, cultivado en Colombia, México y Andes de Perú. Contiene la bixina un apocarotenoide que tiene un sabor insípido, por lo que es adecuado para las artes culinarias, cosméticas y medicinales La presente investigación se realizó en la ranchería Arena 1ª. Sección del municipio de Comalcalco, Tabasco en un área que cuenta con 100 plantas de una variedad color rojo; esta plantación sufre d...

  14. Consecuencias de la contaminación por hidrocarburos del petróleo sobre la salud humana y fertilidad de suelos en Huimanguillo, Tabasco.

    OpenAIRE

    Vázquez Luna, Dinora

    2011-01-01

    En México, el desarrollo basado en la industria petrolera ha afectado los suelos y recursos naturales del sureste del país; sin embargo, no hay estudios que vinculen sus efectos sobre el desarrollo equitativo de los habitantes en zonas contaminadas. Por ello, el objetivo del trabajo fue analizar desde la perspectiva de género, los efectos sociales sobre el desarrollo equitativo de las familias, en cuatro zonas de los ejidos de Humanguillo, Tabasco (Rovirosa, El Paraíso, La Ceiba y Gurría), qu...

  15. Recuperación de saberes campesinos y apropiación de ecotecnologías en comunidades rurales de la Chontalpa, Tabasco, México

    OpenAIRE

    Chávez García, Elsa

    2015-01-01

    Acompañamiento agroecológico con productores de comunidades de la Llanura costera del Golfo de Tabasco, México, con el fin de recuperar saberes campesinos e introducir ecotecnologías que fortalezcan la milpa - agroecosistema tradicional diversificado de maíz y diversas especies alimenticias – y el autoabasto. Se recuperaron prácticas tradicionales como el aprovechamiento del rastrojo para la conservación de la humedad, el control de arvenses y aporte materia orgánica; el cultivo intercalado d...

  16. Geodynamical evolution and maturation of organic matter in the Chiapas-Tabasco and Comalcalco basins (Mexico); Evolution geodynamique et maturation de la matiere organique dans les bassins de Chiapas-Tabasco et de Comalcalco (Mexique)

    Energy Technology Data Exchange (ETDEWEB)

    Tovar Guerrero, A.

    1997-12-11

    The south-east Mexican basins are the subject of many petroleum researches. They often have a complex history which needs a pluri-disciplinary approach in order to understand better their evolution in space and time. Part of the Chiapas-Tabasco and Comalcalco sedimentary basins has been studied in this research work on the basis of the three wells data. Thanks to the stadial analysis, the diagenetic study allowed first to list crystalline types recognized in the mesozoic sequence, and then to set up their chronology. The various porosity types of each facies of the sequence were also described, allowing in this way to know the present localisation of this porosity. A study of the subsidence was carried out. Subsidence controlled all the basins evolution, in this way the organic matter of the source rock achieved its maturation due to high subsidence (95 m/Ma) and to high sedimentation rates (530 m/Ma) during the last five million years of the basins evolution. The geochemical study of this organic matter using ROCK-EVAL pyrolysis technique revealed a Type II (marine origin) and allowed to define the oil window interval (4800-5200 m). These results are compared with the optimal moment of the oil genesis (TTI = 75) calculated via the Lopatin method. The petroleum history of the basins was punctuated first by the deposition and the conservation of the organic matter, then by the creation of a secondary porosity mainly resulting from a dolomitization process. It ended with the maturation of this organic matter controlled by the subsidence process, permitting in this way to reach the oil window. (author) 190 refs.

  17. CONSERVACIÓN INTEGRAL DEL PATRIMONIO ARQUEOLÓGICO BAJO UNA PERPESCTIVA DE MANEJO EN LOS PANTANOS DE CENTLA, TABASCO

    Directory of Open Access Journals (Sweden)

    Alfredo Feria C.

    2013-01-01

    Full Text Available En la actualidad las necesidades de conservación y protección se han acentuado, existe ahora la participación de agentes culturales y organismos nacionales e internacionales interesados en la preservación de los bienes culturales como transmisores importantes de un legado histórico. Es aquí donde el Instituto Nacional de Antropología e Historia debe generar diferentes estrategias para regular el funcionamiento del mismo a través de una adecuada estrategia de gestión basada en la conservación integral involucrando de manera planificada todos aquellos proyectos enfocados a proteger el patrimonio arqueológico; abarcando desde la investigación arqueológica y la restauración, pasando por todo el ámbito de educación y difusión, hasta todo lo que tiene que ver con cuestiones administrativas y las cuestiones legales con una visión sustentable. Se hace así una propuesta metodológica para elaborar un documento de manejo tomando como referente el caso del Municipio de Centla, Tabasco, conformada por una serie de programas que contempla: Programa de Investigación, Programa de Conservación, Programa de Interpretación, Programa de Participación Social, Programa de Infraestructura y Servicios. Considerando que las primeras acciones que se deben de llevar a cabo previas a integrar esta propuesta de manejo sean: Identificación del patrimonio, Diagnóstico del patrimonio, Identificación de actores e Identificar la puesta en valor del patrimonio.Una vez que se obtenga esta información se podrá continuar con la elaboración de un esquema de manejo que deberá de finalizar en un documento avalado por todas las áreas sustantivas del Instituto.

  18. [Bionomics data and descriptions of the immatures of Calyptocephala gerstaeckeri Boheman (Coleoptera: Chrysomelidae), pest of the oil palm (Elaeis guineensis J.) and camedor palm (Chamaedorea elegans Mart.) (Arecaceae) in Tabasco, Mexico].

    Science.gov (United States)

    Córdova-Ballona, Leonides; Sánchez-Soto, Saúl

    2008-01-01

    Characters of the external morphology of egg, larval instars and pupae of Calyptocephala gerstaeckeri Boheman, insect pest of oil palm (Elaeis guineensis J.) and camedor palm (Chamaedorea elegans Mart.) in the State of Tabasco, Mexico, are described and illustrated. Some bionomics data are also presented. The specie was reared in the laboratory on young oil palm plants.

  19. Evidencias de grandes precipitaciones en diversas etapas constructivas de la Huaca de la Luna, costa norte del Perú

    Directory of Open Access Journals (Sweden)

    1993-01-01

    Full Text Available ÉVIDENCES DE GRANDES PRECIPITATIONS AU COURS DE DIFFERENTES ETAPES DE LA CONSTRUCTION DE LA HUACA DE LA LUNA, COTE NORD DU PEROU. Les recherches en cours à la Huaca de La Luna - Vallée de Moche ont permis d’établir une séquence de quatre événements constructifs majeurs, ainsi que diverses modifications à l’intérieur de chaque événement. Des sédiments contenant des fines couches de peinture blanche ont été trouvés sur les sols de ces divers événements constructifs et sont interprétés comme le résultat des pluies intenses. Celles-ci ont été produites par le Phénomène du El Niño. Ces nouvelles données permettront de réévaluer les interprétations historiques du site. Las investigaciones que venimos realizando en la Huaca de La Luna - Valle de Moche, han permitido establecer cuatro etapas constructivas, así como diversas modificaciones al interior de cada etapa. Capas de sedimentos conteniendo lentes de pintura, que han sido halladas sobre los pisos arquitectónicos, las interpretamos como el resultado de fuertes lluvias que han lavado el enlucido y la pintura de las paredes. Grandes precipitaciones en la costa norte sólo se dan cuando aparece el Fenómeno de El Niño. Estos nuevos datos permitirán reevaluar las interpretaciones históricas del sitio. EVIDENCES OF HEAVY RAINFALL IN SEVERAL BUILDING STAGES OF HUACA DE LA LUNA, COAST OF NORTHERN PERU. On-going research studies on the Huaca de La Luna (valle of Moche archaeological site lead us to distinguish four episodes of building, as well as several modification stages within each episode. Layers of sediment with remnants of paint that were found on successive floors of this site, are interpreted as evidence of intense rainfall events which were able to wash off the walls. This kind of heavy precipitation seems to be closely related to the El Niño phenomenon. These observations should help to re-calculate former historical interpretations o the site.

  20. Eclipse parcial de Luna - 23-24 de Marzo de 1997

    Science.gov (United States)

    Arquiola, A. P.; Arquiola, F. E.

    Luego de varios años en que las condiciones climáticas no nos permitían registrar el fenómeno, pudimos observar y realizar secuencias fotográficas del eclipse parcial Luna. Siendo de una magnitud de 0.92 (muy cercano a la totalidad) se obtuvo una serie de fotografías muy claras y preferentemente con gran contraste a fin de destacar las tonalidades de las sombras, en especial la penumbra, que desde ya el clima nos favoreció. Los métodos fotográficos fueron, en primer lugar, con telezoom de 210mm a f/4.5 con película color de 1600 ASA; y el ya clásico método a foco primario en el Telescopio Schmidt - Cassegrain de 200mm a f/10. Paralelamente a la observación del eclipse, estábamos al instante comunicados por correo electrónico con otros observadores desde diferentes lugares del mundo intercambiando reportes, y también usuarios en general de la red, de esta forma se hizo muy especial el fenómeno. Instrumentos utilizados : Telescopio Schmidt-Cassegrain 200mm f/10, Cámara fotográfica Minolta con Telezoom 210mm f/4.5, Película 1600 ASA color, Telescopio Refractor 80mm a f/15

  1. Preliminary Geophysical Survey for Assessing the Geotechnical Conditions and Geohazards at Huaca de La Luna, Peru

    Science.gov (United States)

    Zavala, G. J.; Lopez, S.; Ebinger, C. J.; Pando, M. A.; Lambert, C.; Morales, R.; Uceda, S.; Perucchio, R.; Castaneda, B.; Aguilar, R.

    2014-12-01

    This paper presents results of near surface geophysical tests to help assess the geotechnical conditions of the archaeological complex of Huaca de la Luna located near the coastal city of Trujillo, Peru. This area of Peru has experienced damaging earthquakes and tsunamis in historic time. The huaca complex is a massive adobe temple progressively built by the Moche civilization from 100 AD to 650 AD. The geophysical tests carried out included Ground Penetrating Radar (GPR), magnetic gradiometer, and Multichannel Analysis of Surface Waves (MASW) to help assess geotechnical conditions such as buried cavities and hallways, thickness and elastic properties of sand sediments, and the depth to the underlying granitic bedrock. The tests were performed to help with the investigation of structural damage observed along a massive adobe wall (north façade) which has shown signs of distress including fissures, settlements, and other damage. The geophysical results together with detailed Lidar surveying are being used as part of this investigation and highlight the usefulness of these non-destructive techniques for archaeological and historical sites.

  2. A randomised controlled trial to assess the efficacy of Laparoscopic Uterosacral Nerve Ablation (LUNA in the treatment of chronic pelvic pain: The trial protocol [ISRCTN41196151

    Directory of Open Access Journals (Sweden)

    2003-12-01

    Full Text Available Abstract Background Chronic pelvic pain is a common condition with a major impact on health-related quality of life, work productivity and health care utilisation. The cause of the pain is not always obvious as no pathology is seen in 40–60% of the cases. In the absence of pathology there is no established treatment. The Lee-Frankenhauser sensory nerve plexuses and parasympathetic ganglia in the uterosacral ligaments carry pain from the uterus, cervix and other pelvic structures. Interruption of these nerve trunks by laparoscopic uterosacral nerve ablation (LUNA may alleviate pain. However, the balance of benefits and risks of this intervention have not been reliably assessed. LUNA has, nevertheless, been introduced into practice, although there remains controversy regarding indications for LUNA. Hence, there is an urgent need for a randomised controlled trial to confirm, or refute, any worthwhile effectiveness. The principal hypothesis is that, in women with chronic pelvic pain in whom diagnostic laparoscopy reveals either no pathology or mild endometriosis (AFS score ≤ 5 LUNA alleviates pain and improves life quality at 12 months. Methods/Design The principal objective is to test the hypothesis that in women with chronic pelvic pain in whom diagnostic laparoscopy reveals either no pathology or mild endometriosis (AFS score ≤ 5 LUNA alleviates pain and improves life quality at 12 months. A multi-centre, prospective, randomised-controlled-trial will be carried out with blind assessment of outcomes in eligible consenting patients randomised at diagnostic laparoscopy to LUNA (experimental group or to no pelvic denervation (control group. Postal questionnaires including visual analogue scale for pain (primary outcome, an index of sexual satisfaction and the EuroQoL 5D-EQ instrument (secondary outcomes will be administered at 3, 6 and 12 months. The primary assessment of the effectiveness of LUNA will be from comparison of outcomes at the one

  3. Flexibilidad curricular y tutorías, efecto en la formación de personal de salud, en Tabasco, México.

    Directory of Open Access Journals (Sweden)

    Marco A. Zavala-González

    2009-01-01

    Full Text Available Objetivo, Determinar el efecto del plan flexible institucional, sobre los indicadores académicos de los alumnos de licenciatura del área de la salud, de la Universidad Juárez Autónoma de Tabasco. Diseño, observacional, retrospectivo, transversal, comparativo. Lugar, Universidad Juárez Autónoma de Tabasco. Participantes, 2963 alumnos del ciclo escolar Agosto/2001-Agosto/2002, y 1740 del ciclo Agosto/2006¿Agosto/2007. No se tomó muestra. Grupo 1, alumnos del ciclo 2006-07, plan flexible. Grupo 2, alumnos del ciclo 2001-02, plan rígido. Variables, licenciatura (cirujano dentista [CD], nutrición [Nut], psicología [Psic], médico cirujano [MC], plan de estudios, promedio general de aprovechamiento (PGA, índice reprobatorio (IR, bajas temporales (BT, deserción. Intervenciones, Base de datos del Departamento de Servicios Escolares de la Universidad Juárez Autónoma de Tabasco. Principales medidas de resultado, Medidas de preferencia y de tendencia central, valor "z" y "t", con 95% de confianza (p[]0.05. Resultados, PGA ciclos 2001-02 y 2006-07, CD 7.82±0.66, 8.01±0.64, Nut 8±0.64, 8.51±0.48, Psic 8.29±0.62, 8.5±0.63, MC 8.02±0.67, 8.22±0.62, diferencia significativa (DS en todos los casos. IR ciclos 2001-02 y 2006-07, CD 11.26%, 11.13%, Nut 11.75%, 2.03%, Psic 6.98%, 7.22%, MC 8.40%, 7.92%, DS sólo en nutrición. No se encontraron diferencias significativas en BT y deserción en todas las licenciaturas. Conclusiones, El plan flexible muestra efecto positivo sobre el PGA de los alumnos, quizá más atribuible a la flexibilidad curricular que a las tutorías. Sin embargo, el efecto sobre otros indicadores es nulo, esto debe investigarse. Es necesario establecer indicadores adecuados para la evaluación del plan flexible.

  4. Nuclear astrophysics deep underground the case of the 15N(p,γ)16O reaction at LUNA

    CERN Document Server

    Mazzocchi, Chiara

    2010-01-01

    Measuring nuclear reactions of astrophysical interest at the relevant energies is not always possible on the Earth’s surface because of the cosmic-ray background that dominates the spectra. The LUNA collaboration exploits the lowbackground enviroment of Gran Sasso National Laboratory to study these reactions at or close to the Gamow peak. The latest experimental efforts included the measurement of the 15N(p,γ)16O at beam energies between 77 and 350 keV. The status of these measurements is summarised in this contribution.

  5. Estudio parasitológico del pez luna, Mola mola (L.), en el Mediterráneo occidental

    OpenAIRE

    Ahuir Baraja, Ana Elena

    2012-01-01

    En el presente trabajo se ha realizado, por primera vez, un estudio de la parasitofauna del pez luna, Mola mola (L.), del Mediterráneo español. Hasta la fecha, se trata del estudio más detallado y completo sobre los parásitos de este pez en todo el mundo. Se han analizado 106 peces durante el período 2005−2008: 104 procedentes de cuatro muestreos consecutivos en la almadraba de La Azohía (Cartagena, Murcia) y 2 varados en Canet de Berenguer y Almazora (Comunidad Valenciana). Además, también s...

  6. Evaluación espacial y temporal de la vegetación de la Sierra Madrigal, Tabasco, México (1973-2003)

    OpenAIRE

    Erika del Carmen Salazar Conde; Joel Zavala Cruz; Ofelia Castillo Acosta; Rafael Cámara Artigas

    2004-01-01

    Esta investigación tuvo como objetivo evaluar los cambios espaciales de la vegetación en la Sierra Madrigal; estado de Tabasco, en un área de 3 642 ha, en el período 1973-2003. Con base en la fotointerpretación de fotografías aéreas y verificación de campo, se elaboró la cartografía de vegetación y usos del suelo de los años 1973, 1984 y 2003 a escala 1:20 000. Se caracterizó la vegetación y los usos del suelo, se obtuvieron los índices de cambio de uso del suelo, y se compararon algunas prop...

  7. EFECTO DE Arachis pintoi sobre las ARVENSES asociadas al PLÁTANO MACHO (Musa aab), CÁRDENAS, TABASCO, MÉXICO

    OpenAIRE

    Eder Ramos-Hern\\u00E1ndez; \\u00C1ngel Sol-S\\u00E1nchez; Armando Guerrero-Pe\\u00F1a; Jos\\u00E9 Jes\\u00FAs Obrador-Ol\\u00E1n; Eugenio Carrillo-\\u00C1vila

    2011-01-01

    Este experimento se realizó en Cárdenas, Tabasco, México en un suelo con textura franca, pH moderadamente ácido, contenido de materia orgánica y nitrógeno total bajo, cultivado con plátano macho, con el objetivo de determinar el control de arvenses con A. pintoi en una plantación de plátano macho. Se utilizó un arreglo factoria l alojado en un diseño de bloques completos al azar, con sombreado y tip o de cobertura vegetal asocia da al plátano como factores, con tres repe ticiones (octubre 200...

  8. Caracterización de la vegetación y uso del suelo del río Grijalva en el Municipio Centro, Tabasco.

    OpenAIRE

    Palomeque Martínez, María Isabel

    2012-01-01

    En las orillas del cauce del río Grijalva se ha venido dando un proceso de erosión, lo que ha provocado el deterioro de suelos, cultivos, vías de comunicación y viviendas, por lo que el objetivo de la presente investigación fue caracterizar el uso del suelo y la vegetación de la llanura aluvial alta y el cauce del río Grijalva, en el municipio de Centro, Tabasco, en una superficie de 2739.8 ha. Se elaboró, mediante clasificación supervisada de imágenes de satélite SPOT 2009, un mapa de uso de...

  9. The Power of Love: Rewriting the Romance in Isabel Allende's The House of the Spirits and Eva Luna

    Directory of Open Access Journals (Sweden)

    Frances Jane P. Abao

    2000-12-01

    Full Text Available Despite its ongoing popularity with women readers, romantic fiction has traditionally been regarded as an instrument of women's oppression, largely due to its reinforcement and even glorification of sexual stereotypes and bourgeois values. Latin American writer Isabel Allende's novels The House of the Spirits and Eva Luna both contain a number of the elements and conventions of romantic fiction, including distinct similarities to the two acknowledged foundations of this genre: Charlotte Brontë's Jane Eyre and Emily Brontë's Wuthering Heights.However, The House of the Spirits and Eva Luna can also be read as rewritings of the genre of romantic fiction. In these two texts, Isabel Allende appropriates and then reworks certain conventions of romantic fiction in order to portray her notion of "fulfilling egalitarian relationships" between men and women. Nevertheless, despite these feminist revisions, Allende's rewritten romances do retain the "wish-fulfillment" element-or ideal-of romantic fiction, its depiction of women's fantasy of feminine values being appreciated and validated within heterosexual romantic relationships in the real world.

  10. Judíos de Belchite en el denominado «Libro de la escribanía de don Federico de Aragón, conde de Luna» (1422-1425

    Directory of Open Access Journals (Sweden)

    Aparici Martí, Joaquín

    2011-06-01

    Full Text Available The lack of documentary local sources has hindered until here our knowledge of the Jews of the Aragonese town of Belchite, belonging to the count of Luna. By using a manuscript notarial notebook –that had been inaccurately ascribed to a “seigniorial notary’s office of Federico de Aragon”– preserved in the City Archives of Segorbe, the author identifies several Jews living in the town in the 1420s and provides mention of their activities. Some of these Jews are featured in the Hebrew poems by Šelomoh Bonafed, the author that will settle in Belchite two decades later.

    La ausencia de fuentes documentales locales no había permitido hasta ahora conocer con algún detalle la comunidad judía de Belchite situada en el Bajo Aragón. Con ayuda de un manuscrito que contiene un manual ordinario del notario Pere Capdevila, inicialmente atribuido a una inexistente «escribanía de Federico de Aragón, conde de Luna», conservado en el Archivo Histórico Municipal de Segorbe (Castellón, el autor logra documentar aspectos biográficos y las actividades de judíos que vivían en esta localidad aragonesa en la década de 1420. Algunos de estos judíos aparecen mencionados por el poeta Šelomó Bonafed, que años más tarde se asienta en Belchite.

  11. Chemistry and petrology of Luna 24 lithic fragments and less than 250-micron soils - Constraints on the origin of VLT mare basalts

    Science.gov (United States)

    Ma, M.-S.; Schmitt, R. A.; Taylor, G. J.; Warner, R. D.; Lange, D. E.; Keil, K.

    1978-01-01

    Results are reported on a combined INAA-petrologic study of 17 small (0.2-1.5 mg) Luna 24 lithic and mineral fragments and INAA study of 5 bulk soils and mineral separates from gabbro 24170. Lithic and mineral fragments are classified into VLT mare basalts (ferrobasalt and metabasalts), low-Ti, variolitic mare basalt, gabbros, melt rock and soil breccia. Data indicate 5 possible magma types, represented by: (1) VLT ferrobasalt and gabbro fragments, with low-TiO2 (about 1%), slightly bow-shaped REE pattern, and low REE concentrations (5-10X chondritic); (2) a ferrobasalt (Laul et al., 1978) and metabasalt fragments with major and trace element contents similar to (1), but positive Eu anomalies; (3) one gabbro fragment with distinctive pyroxene compositional trend (increasing Ti with nearly constant Fe/Fe + Mg) and highest REE contents of any Luna 24 mare basaltic sample, (4) a gabbro fragment with considerably less V and Cr2O3 than ferrobasalt and metabasalt fragments; and (5) variolitic basalt fragment with higher Ti2(2.3%) than other Luna 24 basalts and pyroxene that has increasing then decreasing Ti with increasing Fe/Fe + Mg. Trace element data place constraints on the nature of the source region and possible parent magmas for the Luna 24 VLT ferrobasalt.

  12. Facies and diagenesis of the Devonian Portilla limestone formation between the river Esla and the Embalse de la Luna, Cantabrian Mountains, Spain

    NARCIS (Netherlands)

    Reijers, T.J.A.

    1972-01-01

    In the central part of the Cantabrian Mountains, between the artificial lake in the rivei Luna in the west and the river Esla in the east, outcrops of the Portilla Limestone Formation were investigated. A fairly uniform development could be observed in four structurally different areas. Six

  13. Electromagnetic sounding of Moon's interior -a proposal for Luna-Globe project

    Science.gov (United States)

    Korepanov, Valery; Rokityansky, Igor; Dudkin, Fedir; Belyayev, Serhiy; Tereshin, Artem

    The Moon including its deep interior was intensively studied in the time interval 1959-1976, when the data from first lunar missions were recorded, processed and interpreted and the first model of the Moon interior was created. Data of lunar seismology and gravity as well as lunar geography and geology yield clear understanding that lunar crust and mantle are substantially not uniform laterally. Having quite few seismometers and magnetometers at the Moon, only spherically symmetric 1D model of seismic velocities and electrical conductivity was obtained. Next stage of the Moon exploration foresees landing of several robotic missions and it will be then possible to carry out at the Moon's surface geophysical experiments aimed at more careful study of the Moon interior structure. We propose to include in the next planned mission of Russian space program -Luna-Globe -the electromagnetic (EM) sounding of the Moon's mantle in order to clarify more in details its structure. For EM sounding, the spatial-temporal changes of interplanetary magnetic field carried by solar wind (mean intensity 5nT) as well as those of magnetic field in the Earth's magnetosphere tail (˜ 9nT) during its crossing by the Moon may be used. These values define the maximal level of the primary external magnetic field Be. Solar wind magnetic field induces in the Moon mostly poloidal field Bi due to eddy currents driven by variations of Be. For spherically symmetric 1D model, the higher is conductivity of a concentric internal lunar layer, the stronger eddy currents flow in it and the larger is contribution of the layer in Bi, of course, if skin depth is sufficient for this. Poloidal field from deep interior arrives to surface with geometrical attenuation. For example, field produced at Moon surface by currents in conducting layer at the depth R/2 (R = metricconverterProductID1738 km1738 km is Moon radius) attenuates and at the best will be equal to ˜0.1Bi. Practically it means that reliable

  14. Fenología reproductiva de las especies arbóreas del bosque tropical de Tenosique, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Susana Ochoa-Gaona

    2008-06-01

    Full Text Available La fenología de 341 árboles que corresponden a 75 especies fue estudiada en las montañas de Tenosique, Tabasco, entre agosto del 2003 hasta agosto del 2005. Para ello, se establecieron cinco transectos de 500 m de largo por cinco metros de ancho, los cuales se evaluaron mensualmente. Si alguno de los individuos de las especies tenía flores o frutos, la especie como un todo fue considerada en floración o fructificación en ese mes. Se aplicaron pruebas de homogeneidad de ji-cuadrada para evaluar la homogeneidad de la floración y fructificación a lo largo del año y por periodos bimensuales. La floración fue bimodal, con un pico de mayor floración de marzo a abril que corresponde a menor precipitación. En julio se presentó un segundo pico de floración con 21 especies, correspondiendo igualmente a un decremento de la precipitación. El mayor número de especies con fruto se presentó entre mayo y junio, el cual no fue significativo estadísticamente. También se analizan los patrones fenológicos de las familias con mayor número de especies, los cuales difirieron entre sí. No se encontró relación entre el número de especies floreciendo o fructificando y la precipitación promedio mensual. Se encontraron picos fenológicos poco marcados debido a que en la zona de estudio la estacionalidad es poco marcada. Los patrones fenológicos varían dentro de una especie, entre años y entre localidades. Los datos que se aportan en el presente trabajo son relevantes para definir los periodos apropiados de recolecta de semillas para la realización de prácticas de manejo y conservación.Reproductive phenology of tree species in the Tenosique tropical forest, Tabasco, Mexico. Between August 2003 and August 2005 we registered the flowering and fruiting of 75 tree species (341 individual trees in a tropical rain forest at Tenosique, Tabasco, Mexico. Monthly we checked five transects (500 m long; 5 m wide. To test the homogeneity of flowering and

  15. Ictiofauna de los humedales del río San Pedro, Balancán, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Alfonso Castillo-Domínguez

    2011-06-01

    Full Text Available Los humedales de San Pedro sostienen redes tróficas del sistema fluvial debido a la alta disponibilidad de hábitats y a sus variaciones espacio-temporales. En esta investigación se estudió la composición, densidad y biomasa de la ictiofauna de los humedales; se capturaron 1 049 organismos de 25 especies, dos son exóticas: Oreochromis niloticus y Parachromis managuense. Con 23 especies capturadas en el sitio I, 17 en el II y 14 en el III. En la época de secas se obtuvo mayor riqueza con 21 especies, lluvias con 17 y cinco en nortes. La mayor densidad se mostró en el sitio II (0.23ind./m², seguido de los sitios I y III (0.12, 0.12ind./m². La mayor biomasa fue en secas (8.30g/m², seguida de lluvias (2.1g/m² y por último nortes (0.01g/m². La mayor densidad se mostró en secas (0.43ind./m² y la mínima en nortes (0.023ind./m². Las especies dominantes en densidad según el diagrama Olmstead-Tukey fueron: Petenia splendida, Vieja heterospila, Vieja synspila, Dorosoma petenense y Astyanax aeneus. Por lo tanto, existieron diferencias significativas en los parámetros ecológicos y ambientales. Al considerar la variación en la riqueza podemos concluir que los humedales del río San Pedro, es un sistema donde la composición de la ictiofauna responde a las fluctuaciones espaciales y temporales.Ichthyofauna from wetlands of San Pedro, Balancán, Tabasco, México. San Pedro River’s wetlands sustain trophic nets in the fluvial system, due to the high habitat availability, and space and temporal variations. In order to describe the relationship between environmental parameters and ichthyofauna, this study evaluated fish assemblages composition, distribution, abundance, density, biomass, richness species, diversity and equitability in the wetlands. Sampling considered three different sites and climatic seasons (dry, rainy and cold fronts. The physical and chemical parameters considered were dissolved oxygen, temperature, pH, water

  16. Study of the 2H(p,γ)3He reaction in the Big Bang Nucleosynthesis energy range at LUNA

    Science.gov (United States)

    Mossa, Viviana

    2018-01-01

    Deuterium is the first nucleus produced in the Universe, whose accumulation marks the beginning of the so called Big Bang Nucleosynthesis (BBN). Its primordial abundance is very sensitive to some cosmological parameters like the baryon density and the number of the neutrino families. Presently the main obstacle to an accurate theoretical deuterium abundance evaluation is due to the poor knowledge of the 2H(p,γ)3He cross section at BBN energies. The aim of the present work is to describe the experimental approach proposed by the LUNA collaboration, whose goal is to measure, with unprecedented precision, the total and the differential cross section of the reaction in the 30 < Ec.m. [keV] < 300 energy range.

  17. Legal aspects and technical alternatives for the treatment of reservoir brines at the Activo Luna oilfield, Mexico.

    Science.gov (United States)

    Birkle, Peter; Cid Vázquez, Adolfo L; Fong Aguilar, J L

    2005-01-01

    Deep formation water, extracted as an undesired byproduct from on-shore production wells at the Activo Luna oilfield and processed in adjacent oil fields, are highly enriched in salt minerals, especially in sodium chloride (NaCl) (262 000 mg/L), but also in metals and nonmetals, such as strontium (Sr) (2068 mg/L), bromine (Br) (2034 mg/L), boron (B) (396 mg/ L), iodine (I) (43.4 mg/L), selenium (Se) (3.74 mg/L), and arsenic (As) (0.55 mg/L). Direct reinjection of the brine underground is not possible because of elevated pressure conditions within the petroleum reservoir. The disposal into near shore areas of the Gulf of Mexico without treatment must be rejected because of a) elevated concentrations of some toxic elements, such as B, silver (Ag), thallium (Tl), Se and cadmium (Cd), which exceed permissible limits of environmental legislation for surface discharge (Official Mexican norms NOM-001-ECOL-1998 and CE-CCA-001/89), and b) differences in density that could cause the descent of hypersaline fluid to the ocean floor, potentially affecting the diversity and survival of the benthic ecosystem. Conventional treatment techniques, such as microfiltration or reverse osmosis, are not suitable for the Activo Luna brines because of their extreme mineralization, which will cause pressure conditions exceeding 200 bars across the membrane. As an alternative process, the evaporation of the entire brine volume of approximately 200 m3/day by solar ponds or industrial crystallization plants is suggested. The residual precipitated residuals are composed mainly of chlorine (Cl) (9460 tons/year), sodium (Na) (4230 tons/ year), calcium (Ca) (1028 tons/year), potassium (K) (207 tons/year), and magnesium (Mg) (65.8 tons/year). As an alternative to its disposal on a dumpsite, some special minerals (especially NaCl, Mg, Sr, and Br) could be recovered for its economic value.

  18. Un acercamiento a la licenciatura en Ciencias de la Educación de la Universidad Juárez Autónoma de Tabasco.

    Directory of Open Access Journals (Sweden)

    Judith Pérez Castro

    2007-01-01

    Full Text Available La educación en valores se hace cada vez más necesaria en las instituciones de educación superior. Los jóvenes universitarios además de ser formados en su disciplina, necesitan construir un armazón valoral que apoye su ejercicio profesional y que les permita desempeñarse con autonomía, responsabilidad, honestidad y sentido de justicia, entre otras cosas. En este artículo, se presentan los resultados preliminares de la investigación Formación disciplinaria y ejercicio profesional. Un acercamiento a partir de los valores, la cual se lleva a cabo en la Universidad Juárez Autónoma de Tabasco. El universo de estudio lo constituyen dos generaciones de la licenciatura en Ciencias de la Educación y, además de los valores, se incluyeron otras dimensiones en donde se indaga sobre las ideas y la relación que los estudiantes mantienen con el mundo, su país, su carrera, la religión, la familia, los amigos y con ellos mismos.

  19. Valoración de la Infraestructura de los Edificios Religiosos para el Turismo Accesible en Villahermosa, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Lidia Guillén Valencia

    2015-01-01

    Full Text Available Los turismos religioso y accesible han promovido conciencia social, aprendizaje y salud en todos sus aspectos, y han generado una considerable derrama económica debido al desplazamiento masivo de sus practicantes. No obstante, el turismo accesible ha encontrado una serie de obstáculos arquitectónicos para acceder a los templos. Por tal razón, fueron valorados antropometricamente los edificios religiosos de Villahermosa, Tabasco, México, para determinar si su infraestructura es incluyente con este tipo de turistas. Se caracterizaron los templos, se entrevistaron informantes clave y se disenso una matriz de evaluación considerando los trece criterios antropometricos de Gutiérrez y Buenfil (2005. El resultado fue que los siete templos valorados cumplen de manera parcial con los requisitos de accesibilidad, esto significa que las necesidades de los turistas no fueron consideradas apropiadamente. Es pertinente aplicar la normatividad para la adecuación de la infraestructura y equipamiento no solo de este tipo de edificios sino para cualquiera.

  20. Programas gubernamentales y respuestas campesinas en el uso del suelo: el caso de la zona oriente de Tabasco, México

    Directory of Open Access Journals (Sweden)

    Ricardo Isaac-Márquez

    2008-01-01

    Full Text Available En el presente artículo se examinan las estrategias productivas instrumentadas por los campesinos del oriente de Tabasco, para responder a las reformas estructurales. Al analizar los patrones de cambio de uso del suelo en sus parcelas, de 1988 a 2004, se identificaron dos tipos de sistemas productivos: a agricultura de autoconsumo y b ganadería de cría alternada con cultivos básicos. Más que tratar de ser competitivos, las estrategias campesinas buscan minimizar los riesgos para mantener su condición de productores y asegurar la subsistencia de la unidad familiar en el corto plazo. La disyuntiva campesina es continuar con la ganadería, que conlleva costos elevados para el medio ambiente y de la cual parecen condenados a ser excluidos, o incursionar en opciones forestales que pueden ser rentables a futuro. Se concluye que las políticas públicas deben fortalecer los medios de vida de las comunidades, según un enfoque amplio de desarrollo rural

  1. Fartan sus iras en forma semblante : la tumba de Álvaro de Luna y el status de la imagen en la Castilla tardomedieval

    Directory of Open Access Journals (Sweden)

    Rosa María Rodríguez Porto

    2003-01-01

    Full Text Available La tumba erigida por Alvaro de Luna en su capilla de la Catedral de Toledo fue destruida ya en vida del Maestre. La trascendencia del personaje efigiado, las especiales características del monumento y su violenta desaparición, influyeron en la gestación, a partir del siglo xvii, de toda una tradición legendaria que ha condicionado hasta hoy el estudio de la tumba. El análisis riguroso de las fuentes textuales permite reconstruir el aspecto originario del sepulcro y el impacto que causó en sus contemporáneos.The particular circumstances that surrounded both the erection and the destruction of Alvaro de Luna's tomb, when he was still alive, generated a legendary history about it. However, the analysis of the written sources allows us to consider again the questions related to its original disposition and reception.

  2. Du concept de privanza à la notion de conseil dans la Crónica de Álvaro de Luna (XVe siècle

    Directory of Open Access Journals (Sweden)

    Ghislaine Fournès

    2011-11-01

    Full Text Available Cet article entend analyser le traitement accordé à Álvaro de Luna dans la Crónica qui lui est consacrée, afin de mesurer ce qui, en ce XVe siècle, sépare la figure émergente du privado de celle, ancienne, du conseiller d’un roi ou d’un prince. Malgré la louange appuyée, malgré les distorsions et les omissions imposées par le genre, la Crónica délivre de nombreux indices renvoyant à la relation existant entre Jean II et Álvaro de Luna. Il est alors possible de tenter de cerner les différentes facettes du personnage et son inscription dans l’évolution des pratiques du pouvoir en cette fin du Moyen Âge.El presente artículo tiene como meta analizar el tratamiento otorgado a Álvaro de Luna en su crónica para determinar lo que, durante el siglo XV, separa la figura emergente del privado de la remota figura del consejero de un rey o de un príncipe. A pesar de la alabanza, de las distorsiones y de los silencios impuestos por el género cronístico, la crónica ofrece numerosos indicios sobre la relación mantenida por Juan II y Álvaro de Luna. El análisis permite dibujar las diferentes facetas del personaje así como su posición en relación con la evolución de las prácticas del poder a finales de la Edad Media.

  3. Ground state capture in $^{14}$N(p,$\\gamma$)$^{15}$O studied above the 259 keV resonance at LUNA

    CERN Document Server

    Trautvetter, H P; Bonetti, R; Broggini, C; Caciolli, A; Confortola, F; Corvisiero, P; Costantini, H; Elekes, Z; Formicola, A; Fülöp, Z; Gervino, G; Guglielmetti, A; Gyurky, Gy; Gustavino, C; Imbriani, G; Junker, M; Lemut, A; Limata, B; Marta, M; Mazzocchi, C; Menegazzo, R; Prati, P; Roca, V; Rolfs, C; Alvarez, C Rossi; Somorjai, E; Straniero, O; Strieder, F; Terrasi, F; Vezzu, S; Vomiero, A

    2007-01-01

    We report on a new measurement of $^{14}$N(p,$\\gamma$)$^{15}$O for the ground state capture transition at $E_p$ = 360, 380 and 400 keV, using the 400 kV LUNA accelerator. The true coincidence summing effect --the major source of error in the ground state capture determination-- has been significantly reduced by using a Clover--type gamma detector.

  4. Zonificación agroecológica y estimación del rendimiento potencial del cultivo de la yuca (Manihot esculenta Crantz en el estado de Tabasco, México

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    B. Rivera-Hernández

    2012-01-01

    Full Text Available El estado de Tabasco es el principal productor de yuca (Manihote esculenta Crantz en México, mismo que ha perdido en los últimos cinco años cerca del 45% de la superficie dedicada a este cultivo. Razón por la cual, las políticas actuales de desarrollo rural se enfocan a dirigir todo tipo de apoyos, especialmente los económicos, hacia las áreas con mayor potencial productivo para diferentes cultivos, entre ellos, la yuca. Derivado de esta política y del interés del gobierno del estado de Tabasco, se realizó el presente estudio, con los objetivos de conocer las áreas con mayor potencial productivo en el estado y estimar el rendimiento potencial esperado del cultivo de la yuca. Para ello, se utilizó el procedimiento de zonificación agro-ecológica (zae propuesto por la Fao para áreas muy aptas y para una situación de alta inversión en condiciones de agricultura de temporal. Se analizaron cuatro variables climáticas y seis propiedades edafológicas. El análisis de las variables climáticas y edafológicas (físicas y químicas y su posterior representación cartográfica mostraron que en el estado de Tabasco existen 476,617 hectáreas con alto potencial edafoclimático para cultivar yuca, con rendimientos potenciales de 42.3 t ha-1.

  5. Caracterización de parámetros físico-químicos y calidad microbiológica del queso de poro del municipio de Balancán, Tabasco, México.

    OpenAIRE

    Pérez Pacheco, Fernando

    2012-01-01

    El siguiente trabajo de tesis tuvo por objeto ampliar el conocimiento sobre los quesos ácidos manufacturados con leche bronca, y en específico en generar información sobre la calidad microbiológica y los factores fisicoquímicos del queso poro genuino del municipio de Balancán, Tabasco, México. Entre los microorganismos indicadores evaluados se tuvieron las siguientes bacterias patógenas: Salmonella spp., Staphylococcuss aureus, coliformes y Listeria monocytogenes a diferentes tiempos de almac...

  6. Diagnóstico del manejo postcosecha, comercialización e industrialización de piña (Ananas comosus L. Merill) en Huimanguillo, Tabasco, México

    OpenAIRE

    Cano Ascencio, Héctor

    2012-01-01

    El municipio de Huimanguillo, Tabasco es la tercera región productora de piña en México y no esta exenta de la problemática generalizada en dicho sector (socioeconómicos, tecnológicos y ambientales); por lo que con el presente trabajo se planteó conocer a detalle mediante un diagnóstico la situación sobre el manejo pre y post cosecha, comercialización e industrialización de piña. Los métodos de investigación utilizados fueron cuantitativos y cualitativos; para lo cual medi...

  7. Evaluación espacial y temporal de la vegetación de la Sierra Madrigal, Tabasco, México (1973-2003

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    Erika del Carmen Salazar Conde

    2012-02-01

    Full Text Available Esta investigación tuvo como objetivo evaluar los cambios espaciales de la vegetación en la Sierra Madrigal; estado de Tabasco, en un área de 3 642 ha, en el período 1973-2003. Con base en la fotointerpretación de fotografías aéreas y verificación de campo, se elaboró la cartografía de vegetación y usos del suelo de los años 1973, 1984 y 2003 a escala 1:20 000. Se caracterizó la vegetación y los usos del suelo, se obtuvieron los índices de cambio de uso del suelo, y se compararon algunas propiedades del suelo con base en los tipos de la vegetación. La selva alta perennifolia de ramón (Brosimum alicastrum y huapaque (Dialium guianense tuvo una pérdida del 80% de su superficie en 30 años; las principales causas de esta pérdida fueron los incendios forestales que condujeron a la formación de vegetación secundaria (56% y la ampliación de los pastizales (10% para la ganadería de bovinos. La eliminación de la selva provocó, asimismo, disminución de los contenidos de materia orgánica y nitrógeno, lo que indica degradación de suelos en la capa de 0 a 30 cm de profundidad.

  8. Gli anni della luna 1950–1972 : l’epoca d’oro della corsa allo spazio

    CERN Document Server

    Magionami, Paolo

    2009-01-01

    Il 4 ottobre 1957 il bip bip cosmico dello Sputnik il primo satellite artificiale a ruotare attorno alla Terra, apre ufficialmente l’era spaziale. La notizia del lancio comunicata dalla Tass fa il giro del mondo più velocemente del satellite stesso suscitando perplessità, meraviglia, stupore, ammirazione. Per gli Stati Uniti la sconfitta è senza precedenti. L’immagine della superpotenza tecnologicamente più avanzata del mondo crolla di fronte al bip bip cosmico del “compagno di viaggio “ russo. Sotto lo spettro di una guerra nucleare, inizia un’epoca straordinaria per la conquista dello spazio, segnata dalle grandi, storiche, tappe come quella di Yuri Gagarin o di Valentina Tereshkova ma anche dal grande entusiasmo popolare che vede la corsa alla Luna, Marte e le stelle traguardo ormai a portata di mano. I formidabili satelliti sovietici scalzano Sophia Loren dalle copertine delle riviste di costume, Yuri Gagarin irrompe tra le pagine dei fotoromanzi, John Glenn e soci firmano per Life un contra...

  9. Peptīda lunasīna un tā fragmentu efekti uz smadzeņu monoamīnu līmeni pelēm

    OpenAIRE

    Rozenfelds, Nauris

    2015-01-01

    Lunasīns ir jaunatklāts 43 aminoskābju garš peptīds, kas sākumā tika iegūts no sojas pupiņām. Pēc tam lunasīns tika atrasts arī graudaugos un citos augos. Lunasīnam piemīt pretvēža, pretiekaisuma darbība un spēja samazināt zema blīvuma lipoproteīnu līmeni asinīs. Tomēr lunasīna ietekme uz centrālo nervu sistēmu līdz šim ir ļoti maz pētīta. Darba mērķis bija pētīt lunasīna un tā fragmentu efektu uz monoamīnu saturu peļu smadzenēs, mērot monoamīnu līmeni ar augstas efektivitātes šķidruma hromat...

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

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    Mervyn Manuel Hernández-Alvarado

    2016-07-01

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

  11. Isotope studies of carbonate rocks of La Luna Formation (Venezuela) to constrain the oceanic anoxic event 3 (OAE3)

    Science.gov (United States)

    Machado, M. C.; Chemale, F., Jr.; Kawashita, K.; Rey, O.; Moura, C. A. V.

    2016-12-01

    87Sr/86Sr ratios, δ13C, and δ18O determinations performed on 30 bulk carbonate rocks are presented to constrain the isotope characteristics regarding Oceanic Anoxic Event 3 in the La Luna Formation, Maracaibo Basin. The samples were collected along a 22 m profile in San Miguel region (Merida State, Venezuela). The exhibited 87Sr/86Sr ratios are between 0.707659, at the base, and 0.707733 at the top of studied section, corresponding estimated younger numerical ages than the inferred ages dated as Santonian (85.8-83.5 Ma) based on occurrence of Dicarinella asymetrica. The obtained 87Sr/86Sr ratios are certainly higher than expected for Santonian sea Sr and they are attributed to regular riverine strontium fluxes in the restricted (gulf-like) Maracaibo Basin. The values of δ18O data between -3.76‰ and -11.76‰ are distributed in two distinct clusters in a same way and coherent as for δ13C data which are in a range between -1.75‰ and -13.87‰. One of the clusters δ13C = -2.5 ± 1.0‰ and δ18O = -10.0 ± 1.5‰), illustrate the homogeneous marine deposition under tropical conditions, while the other, more variable, probably could reflect the cyclicity of temporally changes in Pacific versus Atlantic Ocean circulation with cooling water or cooling trend climate. These δ13C values around -2.5 ± 1.0‰ do not fit with the significant carbon isotope excursion as expected for the oceanic anoxic event (OAE) and support the work hypothesis that Coniacian-Santonian anoxic event (denominate as OAE3) is not a global one.

  12. El caballero del cisne: de la leyenda medieval a la interpretación esotérica de Mario Roso de Luna

    OpenAIRE

    Celma Valero, María Pilar

    1998-01-01

    Estudio de un mito de origen medieval, la Leyenda del Caballero del Cisne y de su recepción y particular interpretación por parte de Mario Roso de Luna, escritor teósofo y ocultista, en la primera década del siglo XX. La Leyenda del Caballero del Cisne nos ha llegado como parte integrante de La Gran Conquista de Ultramar, crónica novelada , en que se relatan las Cruzadas a Tierra Santa en el siglo XII. La narración principal se centra en las hazañas de los caballeros cruzados para reconquista...

  13. Depressive symptoms following stroke and transient ischemic attack: is it time for a more intensive treatment approach? results from the TABASCO cohort study.

    Science.gov (United States)

    Tene, Oren; Shenhar-Tsarfaty, Shani; Korczyn, Amos D; Kliper, Efrat; Hallevi, Hen; Shopin, Ludmila; Auriel, Eitan; Mike, Anat; Bornstein, Natan M; Assayag, Einor Ben

    2016-05-01

    To examine whether depressive symptoms after a stroke or a transient ischemic attack (TIA) increase the risk of cognitive impairment and functional deterioration at 2-year follow-up. Participants were survivors of first-ever, mild-to-moderate ischemic stroke or TIA from the TABASCO prospective cohort study who underwent 3T magnetic resonance imaging and were examined by a multiprofessional team 6, 12, and 24 months after the event using direct interviews, depression scales, and neurologic, neuropsychological, and functional evaluations. The main outcome was the development of cognitive impairment, either mild cognitive impairment (MCI) or dementia. MCI was diagnosed by a decline on at least 1 cognitive domain (≥ 1.5 SD) of the Montreal Cognitive Assessment score and/or on the computerized neuropsychological battery, as compared with age- and education-matched published norms. Dementia was diagnosed by a consensus forum that included senior neurologists specializing in memory disorders and a neuropsychologist. Data were obtained from 306 consecutive eligible patients (mean age: 67.1 ± 10.0 years) who were admitted to the department of emergency medicine at the Tel Aviv Medical Center from April 1, 2008, to December 1, 2011, within 72 hours from onset of symptoms of TIA or stroke. Of these patients, 51 (16.7%) developed cognitive impairment during a 2-year follow-up. Multivariate regression analysis showed that a Geriatric Depression Scale (GDS) score ≥ 6 at admission and at 6 months after the event was a significant independent marker of cognitive impairment 2 years after the stroke/TIA (OR = 3.62, 95% CI, 1.01-13.00; OR = 3.68, 95% CI, 1.03-13.21, respectively). A higher GDS score at 6 months was also related to a worse functional outcome (P depression screening among stroke and TIA survivors as a tool to identify patients who are prone to have a worse cognitive and functional outcome. These patients may benefit from closer medical surveillance and a more

  14. Histología del ciclo reproductor de hembras del pejelagarto Atractosteus tropicus (Lepisosteiformes: Lepisosteidae enTabasco, México

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    Otilio Méndez-Marin

    2012-12-01

    Full Text Available En el sureste de México A. tropicus es una especie de gran importancia ecológica, económica, cultural y para acuicultura, sin embargo, sus poblaciones silvestres han disminuido a causa de diversas actividades antropogénicas, por lo que se caracterizó el ciclo reproductor de A. tropicus, a partir de los cambios en los elementos germinales y somáticos durante la ovogénesis y la estructura de toda la gónada, información valiosa para el mejor manejo y aprovechamiento de la especie. Mensualmente se capturaron con redes de arrastres, seis hembras sexualmente maduras (N=72, durante un ciclo anual (octubre 2003-septiembre 2004, en poblaciones silvestres de la laguna de Pomposu del municipio de Jalpa de Méndez; Tabasco, México. Las hembras fueron sacrificadas por decapitación y los ovarios se procesaron por métodos histológicos convencionales, se determinó el diámetro entre 10-20 ovocitos en los diferentes estadios de desarrollo al azar. Se determinó mensualmente el índice gonadosomático (IGS, volumen gonadal (gV y el diámetro del folículo (fD. Además, se identificaron ocho estadios de desarrollo de la ovogénesis: I: cromatina nucléolo, II: perinucléolo temprano, III: perinucléolo avanzado, IV: alvéolos corticales, V: vitelogénesis temprana, VI: vitelogénesis media, VII: vitelogénesis avanzada, VIII: maduración final. El ciclo reproductor la constituye cuatro clases: I.-Proliferativa, II.-Maduración inicial, III.-Maduración tardía, IV.-Regresión-proliferación. El análisis de la información obtenida de los valores encontrados del IGS, gV, fD, estadios de la ovogénesis y clases reproductivas, indican que en diciembre se reinicia el crecimiento de los folículos (previtelogenesis, de mar-zo-julio se presenta la captación del vitelo (vitelogenesis y en agosto-noviembre se presenta la máxima actividad reproductora, al contrastar este patrón con los factores ambientales (temperatura, precipitación se sugiere que estos

  15. Desigualdades de género en sobrepeso y obesidad entre indígenas chontales de Tabasco, México

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    Marcelina Cruz-Sánchez

    2012-01-01

    Full Text Available Antecedentes: La obesidad se ha convertido en una epidemia global y las mujeres presentan tasas más altas que los hombres. Se desconoce el porqué de este fenómeno, o si adquiere características específicas entre la población indígena. Objetivo: identificar las desigualdades de género que subyacen al fenómeno del cuerpo con sobrepeso y obesidad entre indígenas chontales de Tabasco. Materiales y métodos: estudio cualitativo con entrevistas a profundidad a 15 informantes mujeres y hombres. La guía de entrevista contempló las categorías de: estilo de vida, pertenencia étnica, costumbres y hábitos de alimentación, usos y significados del cuerpo, así como normas de género. Las entrevistas fueron audio grabadas y transcritas. Se obtuvo el consentimiento informado por escrito para participar, así como la aprobación del comité de ética. Resultados: las mujeres presentan mayor sobrepeso y obesidad que sus pares varones; el ejercicio está prohibido para ellas, los espacios públicos para prácticas deportivas son utilizados de manera exclusiva por los varones, las mujeres después de la maternidad, asumen que es ¿normal¿ ser gorda, la obesidad se considera herencia inevitable de los padres y no una enfermedad, la pérdida de peso no es deseable en ninguna etapa de lavida. Conclusiones: Las desigualdades de género son una importante condición para la prevalencia del sobrepeso y la obesidad entre las mujeres chontales. Los resultados de este estudio tienen implicaciones en la promoción de un estilo de vida saludable para la disminución de las tasas de sobrepeso y obesidad entre la población indígena y particularmente entre las mujeres.

  16. Desigualdades de género en sobrepeso y obesidad entre indígenas chontales de Tabasco, México

    Directory of Open Access Journals (Sweden)

    Marcelina Cruz-Sánchez

    2012-01-01

    Full Text Available Antecedentes: La obesidad se ha convertido en una epidemia global (OMS y, aunque se sabe que afecta por igual a toda la población, las mujeres aparecen con más obesidad y obesidad central. Se desconoce el porqué de este fenómeno, o si adquiere características específicas entre la población indígena. Objetivo: identificar las desigualdades de género que subyacen al fenómeno del cuerpo con sobrepeso y obesidad entre indígenas chontales de Tabasco. Materiales y métodos: estudio cualitativo con entrevistas a profundidad a 15 informantes mujeres y hombres. La guía de entrevista contempló las categorías de: estilo de vida, pertenencia étnica, costumbres y hábitos de alimentación, usos y significados del cuerpo, así como normas de género. Las entrevistas fueron audio grabadas y transcritas. Se obtuvo el consentimiento informado por escrito para participar, así como la aprobación del comité de ética. Resultados: Entre la población estudiada, las mujeres presentan mayor sobrepeso y obesidad que sus pares varones, lo que se explica por las normas culturales y de género vigentes en la comunidad; el ejercicio está prohibido para ellas, los espacios públicos para prácticas deportivas son utilizados de manera exclusiva por los varones, las mujeres chontales, después de la maternidad, asumen que es “normal” ser gorda, la obesidad se considera herencia inevitable de los padres y no una enfermedad, la pérdida de peso no es deseable en ninguna etapa de la vida. Conclusiones: Las desigualdades de género son una importante condición para la prevalencia del sobrepeso y la obesidad entre las mujeres chontales. Los resultados de este estudio tienen implicaciones en la promoción de un estilo de vida saludable para la disminución de las tasas de sobrepeso y obesidad entre la población indígena y particularmente entre las mujeres.

  17. Continuidad y cambio en la organización de los espacios arquitectónicos de Huaca de la Luna y Plataforma A de Galindo, costa norte del Perú

    Directory of Open Access Journals (Sweden)

    2005-01-01

    Full Text Available Continuité et changement dans l’organization des espaces architecturaux de Huaca de la Luna et Plate-forme A de Galindo, côte nord du Pérou Résumé: La vision traditionnelle d’une série d’événements qui ont marqué la transition entre la Période Intermédiaire Ancienne et l’Horizon Moyen dans la vallée de Moche montrait l’abandon rapide du site de Huacas del Sol et de la Luna lié au développement du nouveau centre urbain de Galindo. Les indices archéologiques accumulés pendant la dernière décennie indiquent que l’occupation du site de Huacas del Sol et de la Luna s’est prolongée beaucoup plus longtemps que ce que l’on avait pensé à l’origin. De plus, une partie de l’architecture publique de Galindo, soit le complexe de la Plate-forme A, présente des ressemblances marquantes avec la planification architecturale d’une place publique adjacente à Huaca de la Luna. Cet article tente d’exposer les similitudes et les différences architecturales des deux édifices, dans le cadre d’une contemporanéité entre les deux vastes centres préhispaniques de la vallée de Moche, sur la côte nord du Pérou. La perspectiva tradicional sobre la serie de eventos que demarcaron el tránsito entre el período Intermedio Temprano y el Horizonte Medio en el valle de Moche, señalaba el rápido abandono de Huacas del Sol y la Luna para dar paso a un nuevo centro urbano en Galindo. Las evidencias acumuladas en los últimos años indican que la ocupación de Huacas del Sol y la Luna se prolongó temporalmente más de lo pensado, y que parte de la arquitectura pública de Galindo —el conjunto de Plataforma A— presentaría reminiscencias claras de la planificación de una plaza pública de Huaca de la Luna. El artículo busca exponer las similitudes y diferencias entre sectores de ambos edificios, en el marco de la probable coetaneidad entre estos dos vastos asentamientos urbanos prehispánicos en la costa norte del Perú. Continuity and

  18. Modelado, Simulación y Control de Satélites en los Puntos de Lagrange del Sistema Tierra - Luna

    Directory of Open Access Journals (Sweden)

    F. Alonso Zotes

    2011-07-01

    Full Text Available Resumen: El objetivo de este artículo es modelar, analizar y controlar una constelación de cinco satélites, situados en los puntos de Lagrange del sistema Tierra – Luna. El modelo se ha desarrollado incluyendo efectos complejos no considerados habitualmente, como el viento solar, la no esfericidad de los planetas y la deriva de la órbita lunar, para hacerlo más realista. Sobre los satélites se ejerce una propulsión continua, calculada por medio de controladores tipo PD, tanto convencionales como borrosos, y cuya finalidad es situar y mantener a cada satélite en su punto de Lagrange frente a las inestabilidades y derivas inherentes al sistema. El sistema completo se ha implementado en el lenguaje de modelado Modelica, para el que se han creado una serie de elementos aeroespaciales, y las simulaciones se han desarrollado con el software Dymola. Tanto con los controladores clásicos como con los borrosos se han obtenido muy buenos resultados. Palabras clave: modelado, simulación, control borroso, satélites, puntos de Lagrange, sistema Tierra-Luna

  19. Diversidad, fluctuación poblacional y plantas huésped de escolitinos (Coleoptera: Curculionidae asociados con el agroecosistema cacao en Tabasco, México Diversity, dynamic population and host plants of bark and ambrosia beetles (Coleoptera: Curculionidae associated to the cocoa agroecosystem in Tabasco, Mexico

    Directory of Open Access Journals (Sweden)

    Manuel Pérez-De La Cruz

    2009-12-01

    Full Text Available Se estudió la diversidad de escolitinos asociados con el agroecosistema cacao en Tabasco, México durante el año 2007. Los insectos adultos fueron recolectados en 4 localidades con trampas de alcohol etílico, trampas de atracción luminosa y captura directa sobre sus plantas huésped. Se recolectaron 19 263 ejemplares, pertenecientes a 51 especies y 26 géneros. Araptus hymenaeae y Cnesinus squamosus son nuevos registros para México. La máxima diversidad de insectos capturados con los 3 métodos de recolecta se obtuvo en El Bajío (H'=2.45 y Dmg=4.83, la mínima en Río Seco (H'=2.29 y Km. 21 (Dmg=3.85, y el máximo valor de equidad (J lo obtuvo El Bajío (0.67. El índice de similitud de Sorensen (Is mostró que los sitios de estudio tienden a presentar la misma composición de especies. Los índices de diversidad, equidad y similitud, aplicados a la fauna de escolitinos capturados con cada uno de los métodos empleados, mostraron diferencias, excepto en las trampas de alcohol. La fluctuación presenta picos poblacionales marcados al inicio y al final del año de estudio. Las plantas en las que se recolectó el mayor número de especies fueron Theobroma cacao (16 y Swietenia macrophylla (13.The bark and ambrosia beetle diversity in cocoa agroecosystems was studied during 2007 in Tabasco, Mexico. Adult insects were gathered in 4 localities with ethanol and light traps and by direct collecting in their host plants. 19 263 specimens were gathered, belonging to 51 species and 26 genera. Araptus hymenaeae and Cnesinus squamosus are new records for Mexico. The maximum diversity of insects captured with the 3 collecting methods was obtained in El Bajío (H'=2.45 and Dmg=4.83, the minimum in Río Seco (H'=2.29 and Km. 21 (Dmg=3.85, and the maximum value of justness (J was obtained in El Bajío (0.67. The Sorensen similarity index (Is showed that the study places present the same species composition. The diversity, justness and similarity indices

  20. Pratiques sacrificielles et funéraires au site Moche de la Huaca de La Luna, côte nord du Pérou

    Directory of Open Access Journals (Sweden)

    1998-01-01

    Full Text Available De récentes recherches archéologiques au site Moche de la Huaca de la Luna ont conduit à la découverte d’un important site sacrificiel et d’une plate-forme funéraire. Dans une enceinte située vers l’arrière du temple et jointe à la plate-forme principale, plusieurs individus auraient été sacrifiés lors de pluies torrentielles (phénomène de El Niño. Dans une structure attenante au site sacrificiel, des tombes ont également été localisées dont celles de deux officiants religieux. Des artefacts retrouvés dans ces sépultures semblent indiquer que ceux-ci étaient des spécialistes du sacrifice. Certains résultats préliminaires seront présentés ici. Il appert d’ores et déjà que ce site exceptionnel permettra de mieux comprendre les dimensions funéraires et sacrificielles du système idéologique et religieux Moche. PRÁCTICAS SACRIFICIALES Y FUNERARIAS EN EL SITIO MOCHE DE LA HUACA DE LA LUNA, COSTA NORTE DEL PERÚ. Investigaciones arqueológicas realizadas en el sitio Moche de la Huaca de la Luna han conducido al descubrimiento de un importante sitio sacrificial y de una plataforma funeraria. En primer lugar, en una plaza de la Huaca, numerosos individuos habrían sido sacrificados durante lluvias torrenciales (fenómeno de El Niño. En segundo lugar, en una plataforma asociada a la plaza, cuatro tumbas elaboradas han sido localizadas. Algunos elementos descubiertos en dos de estas tumbas parecen indicar que serían las de dos especialistas de los sacrificios. Solamente los resultados preliminares estarán presentados aquí, pero parece que este sitio excepcional permitirá comprender mejor las dimensiones funerarias y sacrificiales del sistema ideológico y religioso Moche. SACRIFICIAL AND FUNERARY PRACTICES AT THE MOCHE SITE HUACA DE LA LUNA, NORTH COAST OF PERU. Archaeological research carried out at the Moche site of Huaca de la Luna has led to the discovery of a sacrificial site and a funerary platform. A number

  1. Miguel Ángel Cabra de Luna y José Antonio Panizo Robles (coord. (2014: Protección social: Seguridad Social y discapacidad. Estudios en homenaje a Adolfo Jiménez, Madrid: CERMI, Ediciones Cinca.

    Directory of Open Access Journals (Sweden)

    SIIS Centro de Documentación y Estudios

    2014-12-01

    Full Text Available Reseña de la obra 'Protección social: Seguridad Social y discapacidad. Estudios en homenaje a Adolfo Jiménez' (2014 de Miguel Ángel Cabra de Luna y José Antonio Panizo Robles (coords..

  2. Flashback. Europa (Lars von Trier). Caídos del cielo (F. Lombardi). Angelo Diablo (Otto Preminger). Jamon, jamon (Bigas Luna). Riff Raff (Ken Loach). Instinto básico (P. Verhoeven)

    OpenAIRE

    Nogueira, Xosé; Arias, Dany; Cerdán, Josetxo

    1992-01-01

    Nogueira, X.; Arias, D.; Cerdán, J. (1992). Flashback. Europa (Lars von Trier). Caídos del cielo (F. Lombardi). Angelo Diablo (Otto Preminger). Jamon, jamon (Bigas Luna). Riff Raff (Ken Loach). Instinto básico (P. Verhoeven). Vértigo. Revista de cine. (5):3-10. http://hdl.handle.net/10251/42951. 3 10 5

  3. Observations on the Primary Migration of Oil in the la Luna Source Rocks of the Maracaibo Basin, Venezuela Observations de la migration primaire de l'huile dans les roches mères de la Formation de La Luna dans le bassin de Maracaïbo, Venezuela

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    Talukdar S.

    2006-11-01

    Full Text Available In the present work, an integrated approach has been made to understand the primary migration of oil in the organic-rich, oil prone, predominantly carbonate source rocks of the La Luna Formation of the Maracaibo Basin. Geochemical data on source rock extracts and the simulation of oil generation by hydrous-pyrolysis experiments indicate that the primary migration and expulsion of oil began at an early stage of thermal maturity and that the bulk oil expulsion at peak generation could have been as high as 75%. Fluorescence and transmitted light petrography of the source rocks at different maturity levels show the dominant mode of oil expulsion through microfractures. It is interpreted from the geochemical and geological data that the primary migration of oil in the La Luna source rocks took place as a separate oil phase through microfractures caused by the excess fluid pressure due to hydrocarbon generation. The oils expelled from the La Luna source are enriched in saturated hydrocarbons and depleted in resins + asphaltenes compared to the La Luna rock extracts. However the distributions of n-alkanes, in the oils and the rock extracts are very similar, which suggest that fractionation of the n-alkanes did not occur during the primary migration. In the Maracaibo Basin, updip lateral primary migration of oil within the La Luna source system seem to have occurred for a considerable distance. Local internal migration has been observed at a relatively early stage of maturity. Cette étude consiste en une approche intégrée cherchant à comprendre la migration primaire de l'huile dans les roches mères de la Formation de La Luna dans le bassin de Maracaïbo, riches en matière organique, génératrices d'huile et à dominante carbonatée. Les données géochimiques sur des extraits de roches mères et la simulation de genèse d'huile par des expériences de pyrolyse en présence d'eau indiquent que la migration primaire et l'expulsion de l'huile ont

  4. Is the Dark Side of the Moon Ever Illuminated by the Sun? (Breton Title: O Lado Escuro da Lua Nunca Apanha Sol?) El Lado Oscuro de la Luna Nunca Toma Sol?

    Science.gov (United States)

    Giovannini, Odilon; Pellenz, Daiana; Catelli, Francisco

    2014-07-01

    This work presents the elaboration of an answer to the question "Is the dark side of the moon ever illuminated by the sun?", in which issues related to the students' conceptions, how they arise, and the core elements that constitute a "good answer" are considered. These issues are initially elaborated from a literature review of the research in the field; then, and also based on this review, a didactic model that involves the relative motions of the Earth - Moon - Sun system is proposed. A description of the application of this model in a learning environment within middle school students is described. This work confirms the students' initial concepts described in the literature; on the other hand, the questions asked by students during the activity provide evidence that meaningful learning, at least to some degree, has occurred. Este trabalho apresenta a elaboração de uma resposta à pergunta "O lado escuro da Lua nunca apanha sol?" na qual são consideradas questões relacionadas às concepções iniciais dos alunos, de onde elas surgem e os elementos centrais que constituem uma "boa resposta". Essas questões são tratadas, inicialmente, a partir de uma revisão da literatura sobre pesquisas na área e, em seguida, também com base nessa revisão, um objeto modelo didático que envolve os movimentos relativos do sistema Terra - Lua - Sol é proposto. Uma descrição detalhada da aplicação deste modelo em um ambiente de aprendizagem com alunos do ensino fundamental é relatada. As concepções iniciais apresentadas na literatura se confirmam e os questionamentos feitos pelos estudantes por ocasião da aplicação do modelo fornecem indícios de que uma aprendizagem significativa, pelo menos em algum grau, ocorreu. El artículo se presenta el desarrollo de una respuesta a la pregunta "¿El lado oscuro de la luna nunca toma sol?", en la que se consideran algunas cuestiones vinculadas que se refieren a las concepciones iniciales de los estudiantes, dónde surgen

  5. ‘¿A qué sabe la luna?’ : un proyecto para aprender ciencias experimentales en Educación Infantil

    OpenAIRE

    Jiménez Martín, Cristina

    2015-01-01

    El principal objetivo de este trabajo es acercar al aula de Educación Infantil las ciencias experimentales a partir de la metodología por proyectos y teniendo como temática la luna. Este proyecto está dirigido al primer curso del segundo ciclo de la etapa de Educación Infantil, es decir, edades comprendidas entre los 3 y los 4 años. En este trabajo se expondrán las ideas principales de algunos de los autores más relevantes en educación, así como la metodología que se llevará a cabo, l...

  6. La toma de posesión de las villas del Infantado de Huete por el condestable Álvaro de Luna en 1442

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    Martín Prieto, Pablo

    2013-12-01

    Full Text Available The aim of this paper is concerned with establishing a conceptual framework for the study of the ritual side of transmissions of power in late medieval Castilian manors. We will consider the influence of the ethics and aesthetics of feudalism on the elements that express the consent of the involved communities during these ceremonies, as well as on aspects of the contractual nature inherent in the relationship between rulers and ruled in the context of the lordship. A crucial difference can be established between various acts of possession depending on the various kinds of attitudes shown by the communities towards the new lord, ranging from mere passive obedience to eventual hints of actual negotiations. It is also considered here if the latter is the case of the communities within the Infantado de Huete toward their new lord, Constable Álvaro de Luna, in 1442.En este trabajo se propone un marco conceptual para el estudio de las ceremonias de toma de posesión señoriales en la Castilla bajomedieval. Se considera el influjo de la ética y la estética de lo feudal sobre los elementos que expresan el consentimiento de las comunidades durante dichas ceremonias, así como sobre los aspectos de naturaleza contractual inherentes a la relación entre gobernantes y gobernados en el contexto del señorío. Se establece una diferencia crucial entre diversos tipos de tomas de posesión, dependiendo de las distintas actitudes que en ellas adoptan las comunidades hacia el nuevo señor, yendo éstas desde la mera obediencia pasiva hasta sugerir posibles contextos de negociación propiamente dicha, y este último caso se ilustra con el ejemplo de los actos de la toma de posesión de las villas del Infantado de Huete por el condestable Álvaro de Luna en 1442.

  7. Cronología radiocarbónica de Las Lunas (Yuncler, Toledo, un gran poblado de fines de la Prehistoria en la Meseta Sur

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    Urbina Martinez, Dionisio

    2013-12-01

    Full Text Available We present five radiocarbon dates for the Late Bronze and Early Iron Age phases of Las Lunas (Yuncler, Toledo site. Three of them correspond to the initial moments of the settlement –which is associated with an important bronze hoard– and another two to the final moments of the prehistoric occupation of the village. The coincidence of the first three dates allow us to place fairly accurately the bronze hoard in the mid-tenth century BC, providing interesting information for the study of long-distance contacts in the centre of the Iberian Peninsula during this period. The set of dating evidence shows the existence of large sites in a cultural horizon after Cogotas I and before the Early Iron Age. This horizon is virtually unknown in the region.Presentamos cinco fechas radiocarbónicas correspondientes a las fases del Bronce Final e inicios de la Edad del Hierro del asentamiento de Las Lunas (Yuncler, Toledo. Tres de ellas corresponden a los momentos iniciales del poblamiento y se asocian con un destacado depósito de objetos de bronce. Las otras dos remiten a los momentos finales de la ocupación prehistórica del poblado. La coincidencia de las tres primeras fechas sitúa con bastante exactitud la deposición del conjunto metálico a mediados del siglo X a.C., aportando nueva información para el estudio de los contactos a larga distancia de la población del centro de la Península Ibérica durante este período. El conjunto de dataciones evidencia que ya había poblados de gran extensión en un horizonte cultural posterior a Cogotas I y anterior al Hierro I. Este horizonte es prácticamente desconocido en la región.

  8. Caracterización espacio-temporal del hábitat y presencia de Dermatemys mawii (Testudines: Dermatemydidae en la cuenca del Grijalva-Usumacinta, Tabasco, México

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    Claudia Elena Zenteno Ruiz

    2010-12-01

    Full Text Available La tortuga centroamericana (Dermatemys mawii es una especie en peligro de extinción pobremente estudiada. En el presente trabajo se analizaron las variaciones estacionales y espaciales del hábitat y se relacionaron con la presencia/ausencia de D. mawii en tres ríos de la Reserva de la Biosfera Pantanos de Centla (Tabasco, México. Para caracterizar el hábitat se evaluaron 11 variables (hidrológicas, fisicoquímicas del agua y de la vegetación en dos temporadas (seca y lluviosa. Para determinar la presencia/ ausencia de la especie se colocaron 8 trampas de desvío acuáticas, empleando la captura por unidad de esfuerzo (CPUE como indicador de la abundancia relativa. Los resultados indicaron variaciones espacio-temporales. El análisis de componentes principales (ACP permitió determinar la variabilidad ambiental. La presencia de la especie se confirmó en los tres ríos, sin embargo la mayor abundancia relativa se registró en el Río Tabasquillo. Cuatro variables tuvieron el mayor peso como variables predictoras de la presencia de la especie. Con los resultados obtenidos, es evidente la importancia que tiene el ambiente ribereño como hábitat para Dermatemys, asimismo es posible hacer el primer acercamiento a un plan de acción para la protección de la especie y su hábitat en esta reserva.Presence and spatio-temporal habitat characterization of Dermatemys mawii (Testudines: Dermatemydidae in the Grijalva-Usumacinta watershed, Tabasco, Mexico. The Central American River Turtle (Dermatemys mawii is an endangered species that has been poorly studied. There are no reports on their population status, habitat condition, and the species distribution area is still unknown. This study analyzes the seasonal and spatial variations of their habitat and the presence/absence of D. mawii in three rivers within the Pantanos de Centla Biosphere Reserve (Tabasco, Mexico. For habitat characterization, natural segmentation of rivers was used and three

  9. La representación americana en las Cortes de Cádiz y la lucha por la autonomía provincial: casos de Maracaibo y Tabasco, 1810-1814

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    Zulimar Maldonado Viloria

    2002-01-01

    Full Text Available La convocatoria, expedida por la Junta Central en 1.809, para elegir y enviar diputados a las Cortes Generales y Extraordinarias de la monarquía española representó una oportunidad única para las elites americanas de expresar y reivindicar sus aspiraciones políticas y socioeconómicas ante el poder metropolitano. Provincias de diferentes espacios de la América Española, como Maracaibo (Venezuela y Tabasco (México, encausaron su actuación hacia la solicitud y defensa de sus aspiraciones históricas, consistentes en reivindicaciones políticas, económicas, militares, sociales y, sobre todo, en el logro de autonomía y status político El análisis de las actuaciones de los diputados americanos permite deducir la existencia temprana de proyectos ilustrados y autonomistas. En particular, se considera la actuación del parlamentario José Domingo Rus, de la Provincia de Maracaibo y los fundamentos ideológicos, políticos, económicos y sociales que sustentaron el proyecto de la elite que lo designó su representante.

  10. Proving the Orbits of the Galilean Moons Through Astrophotography. (Spanish Title: Comprobando Las Órbitas de Las Lunas Galileanas a Través de la Astrofotografía.) Evidenciando as Órbitas das Luas Galileanas Atravéd da Astrofotografia

    Science.gov (United States)

    Iachel, Gustavo

    2009-12-01

    An activity related to the observation of the Galilean moons and to amateur astrophotography is presented in this work. Through the reading of excerpts of the book Sidereus Nuncius (Sidereal Messenger), by Galileo, it is possible to trace a methodology to observe the planet and its natural satellites and, with the aid of the astrophotography, to analyze the field recordings. Moreover, it is possible to compare the images obtained after plotting the relative positions of these moons to prove their orbits. This activity can be conducted by teachers, students and amateur astronomers, in order to develop their capabilities of observation of astronomical phenomena. Se presenta en este trabajo una actividad relacionada a la observación de las lunas Galileanas y a la astrofotografía amateur. A través de la lectura de tramos de la obra Sidereus Nuncius (El Mensajero Sideral) de Galileo, es posible trazar una metodología para la observación del planeta y de sus satélites naturales y, con el auxilio de la astrofotografía, analizar las anotaciones de campo. Además, es posible comparar las imágenes obtenidas con el gráfico de las posiciones relativas de estas lunas para comprobar sus órbitas. Esa actividad puede ser realizada por maestros, estudiantes y astrónomos amateurs, de forma a desarrollar sus capacidades de observación de los fenómenos astronómicos. Uma atividade relacionada à observação das luas Galileanas e à astrofotografia amadora é apresentada neste trabalho. Através da leitura de trechos da obra Sidereus Nuncius (Mensageiro Sideral), de Galileu, é possível traçar uma metodologia para a observação do planeta e de seus satélites naturais e, com o auxílio da astrofotografia, analisar as anotações de campo. Além disso, é possível comparar as imagens obtidas com o gráfico das posições relativas destas luas para evidenciar suas órbitas. Essa atividade pode ser realizada por professores, estudantes e astrônomos amadores, de forma a

  11. Cartography of the Luna-21 landing site and Lunokhod-2 traverse area based on Lunar Reconnaissance Orbiter Camera images and surface archive TV-panoramas

    Science.gov (United States)

    Karachevtseva, I. P.; Kozlova, N. A.; Kokhanov, A. A.; Zubarev, A. E.; Nadezhdina, I. E.; Patratiy, V. D.; Konopikhin, A. A.; Basilevsky, A. T.; Abdrakhimov, A. M.; Oberst, J.; Haase, I.; Jolliff, B. L.; Plescia, J. B.; Robinson, M. S.

    2017-02-01

    The Lunar Reconnaissance Orbiter Camera (LROC) system consists of a Wide Angle Camera (WAC) and Narrow Angle Camera (NAC). NAC images (∼0.5 to 1.7 m/pixel) reveal details of the Luna-21 landing site and Lunokhod-2 traverse area. We derived a Digital Elevation Model (DEM) and an orthomosaic for the study region using photogrammetric stereo processing techniques with NAC images. The DEM and mosaic allowed us to analyze the topography and morphology of the landing site area and to map the Lunokhod-2 rover route. The total range of topographic elevation along the traverse was found to be less than 144 m; and the rover encountered slopes of up to 20°. With the orthomosaic tied to the lunar reference frame, we derived coordinates of the Lunokhod-2 landing module and overnight stop points. We identified the exact rover route by following its tracks and determined its total length as 39.16 km, more than was estimated during the mission (37 km), which until recently was a distance record for planetary robotic rovers held for more than 40 years.

  12. Estudio crítico de los índices de severidad y la superficie afectada por el incendio de Sierra de Luna (Zaragoza

    Directory of Open Access Journals (Sweden)

    R. Guillem-Cogollos

    2017-12-01

    Full Text Available Para la determinación del área quemada y la severidad asociada del incendio de Sierra de Luna (Zaragoza, ocurrido el 4 de julio de 2015, se han calculado tres índices espectrales derivados de Landsat-8: NDVI, NBR y BAI. Comparando los resultados obtenidos por cada uno de ellos, en un incendio con extensas zonas de cultivo entre zonas arboladas, se ha determinado que la combinación de ΔNBR y BAI mejora sustancialmente la determinación del área realmente quemada, tanto en su perímetro exterior como en las zonas aisladas no quemadas de su interior. Para el cálculo de la severidad, se propone una metodología basada en el análisis de las diferencias de NBR, antes y después del incendio, y su combinación con el BAI, en función del valor previo al incendio de los índices NBR y de NDVI.

  13. Caracterización física y química, de abonos orgánicos, enriquecidos con guano de murciélago, bajo condiciones del trópico húmedo de Tabasco, México

    OpenAIRE

    Castillo Salas, Jesús Manuel

    2012-01-01

    Con el objetivo de caracterizar el desarrollo de las principales compostas usando subproductos de las principales industrias agrícolas en el Estado de Tabasco se adicionaron dosis decrecientes de guano de murciélagos que se obtiene en cavernas que se localizan en las márgenes del rió Usumacinta en el Municipio de Tenosique. Las cuales monitorearon para la determinación del estado de madurez de la masa tomando las lecturas cada dos días de la temperatura, así como muest...

  14. Práctica, agencia e identidad y la docencia de la educación superior de tabasco (un estudio de caso - doi: 10.5007/2175-795X.2011v29n2p483

    Directory of Open Access Journals (Sweden)

    Blanca Estela Arciga Zavala

    2011-06-01

    Full Text Available La dinámica de cambio constante es una de las características contemporáneas de la educación superior, que van desde las políticas educativas que las orientan y se revierten en planes de estudio flexibles, programas por competencias, aprendizajes centrados en los alumnos, programas de estímulos económicos a la productividad, programas de tutorías etc., hasta el uso que las nuevas tecnologías traen consigo. Estos son los contextos y condiciones que hacen cada vez más necesario promover espacios de refl exión sobre los actores de la educación superior, y que en el presente trabajo se hace referencia a los docentes-académicos. Es de vital importancia que los académicos se puedan percibir a sí mismos, para así poder considerar o repensar sus metas, trayectorias académicas y prácticas o en todo caso las opciones que en relación a su profesión han tomado y están tomando. En este sentido el presente trabajo, tiene como objetivo presentar los resultados correspondientes a los datos en el orden de lo cuantitativo (con un origen previo cualitativo sobre los docentes en la educación superior de Tabasco. Datos que se orientan a explorar su agencia, práctica e identidad docente, la cual involucra los factores de: origen de la práctica y la agencia que como actores han desplegado para su confi guración, así como la búsqueda de sentido y las lógicas que han articulado y articulan sus acciones en contextos y habitus específicos.

  15. Evaluación espacio-temporal de la vegetación y uso del suelo en la Reserva de la Biosfera Pantanos de Centla, Tabasco (1990-2000

    Directory of Open Access Journals (Sweden)

    Verónica Guerra Martínez

    2012-02-01

    Full Text Available Se identificó y cuantificó la variación espacial de los tipos de vegetación y usos del suelo en la Reserva de la Biosfera Pantanos de Centla, Tabasco durante 1990 y 2000. Se generaron bases geográficas digitales referentes a geología, edafología, hidrología, temperaturas mínimas, temperaturas máximas, precipitación, vías de comunicación y localidades. La información fue almacenada en un sistema de información geográfica. Se clasificaron escenas del satélite Landsat MSS −de 1992− y Landsat ETM −del 2000. Se generaron mapas de vegetación y uso del suelo para 1990 y 2000 basados en puntos de verificación. Los mapas generados fueron sobrepuestos para obtener un mapa de cambios y una matriz de variación. Las tasas de cambio por pérdida anual se estimaron en 6.06% (selva de puckté y 34.96% (selva de tinto; en tanto que la tasa de incremento anual fue de 1.15% (manglar, 0.72% (comunidades de hidrófitas y 27.82% (pastizal. Los cambios encontrados se relacionaron con la presencia de carreteras pavimentadas, localidades y canales, siendo éstos últimos los que más afectaron. Los resultados muestran que las comunidades de hidrófitas, pastizales y cuerpos de agua se desplazaron a todas las unidades de suelo y geología. Los cambios encontrados pueden atribuirse a diversas causas: los incendios, apertura de vías de comunicación, actividades petroleras, sobreexplotación de recursos, expansión ganadera, tala para extracción de madera y quema intencional para captura de especies.

  16. Caracterización espacio-temporal del hábitat y presencia de Dermatemys mawii (Testudines: Dermatemydidae en la cuenca del Grijalva-Usumacinta, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Claudia Elena Zenteno Ruiz

    2010-12-01

    Full Text Available La tortuga centroamericana (Dermatemys mawii es una especie en peligro de extinción pobremente estudiada. En el presente trabajo se analizaron las variaciones estacionales y espaciales del hábitat y se relacionaron con la presencia/ausencia de D. mawii en tres ríos de la Reserva de la Biosfera Pantanos de Centla (Tabasco, México. Para caracterizar el hábitat se evaluaron 11 variables (hidrológicas, fisicoquímicas del agua y de la vegetación en dos temporadas (seca y lluviosa. Para determinar la presencia/ ausencia de la especie se colocaron 8 trampas de desvío acuáticas, empleando la captura por unidad de esfuerzo (CPUE como indicador de la abundancia relativa. Los resultados indicaron variaciones espacio-temporales. El análisis de componentes principales (ACP permitió determinar la variabilidad ambiental. La presencia de la especie se confirmó en los tres ríos, sin embargo la mayor abundancia relativa se registró en el Río Tabasquillo. Cuatro variables tuvieron el mayor peso como variables predictoras de la presencia de la especie. Con los resultados obtenidos, es evidente la importancia que tiene el ambiente ribereño como hábitat para Dermatemys, asimismo es posible hacer el primer acercamiento a un plan de acción para la protección de la especie y su hábitat en esta reserva.

  17. The optimisation of electrokinetic remediation for heavy metals and radioactivity contamination on Holyrood-Lunas soil (acrisol species) in Sri Gading Industrial Area, Batu Pahat, Johor, Malaysia.

    Science.gov (United States)

    Mohamed Johar, S; Embong, Z

    2015-11-01

    The optimisation of electrokinetic remediation of an alluvial soil, locally named as Holyrood-Lunas from Sri Gading Industrial Area, Batu Pahat, Johor, Malaysia, had been conducted in this research. This particular soil was chosen due to its relatively high level of background radiation in a range between 139.2 and 539.4 nGy h(-1). As the background radiation is correlated to the amount of parent nuclides, (238)U and (232)Th, hence, a remediation technique, such as electrokinetic, is very useful in reducing these particular concentrations of heavy metal and radionuclides in soils. Several series of electrokinetics experiments were performed in laboratory scale in order to study the influence of certain electrokinetic parameters in soil. The concentration before (pre-electrokinetic) and after the experiment (post-electrokinetic) was determined via X-ray fluorescence (XRF) analysis technique. The best electrokinetic parameter that contributed to the highest achievable concentration removal of heavy metals and radionuclides on each experimental series was incorporated into a final electrokinetic experiment. Here, High Pure Germanium (HPGe) was used for radioactivity elemental analysis. The XRF results suggested that the most optimised electrokinetic parameters for Cr, Ni, Zn, As, Pb, Th and U were 3.0 h, 90 volts, 22.0 cm, plate-shaped electrode by 8 × 8 cm and in 1-D configuration order whereas the selected optimised electrokinetic parameters gave very low reduction of (238)U and (232)Th at 0.23 ± 2.64 and 2.74 ± 23.78 ppm, respectively. © The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  18. Las residencias Moches: un primer análisis de la sintaxis espacial en las huacas del Sol y de la Luna, Perú

    Directory of Open Access Journals (Sweden)

    Castillo Luján, Feren Alexard

    2015-12-01

    Full Text Available This paper presents a first approximation obtained from the use of space syntax in residential households in the ancient Moche city (s. VII-IX AD. Studies in the site of Temples of the Sun and Moon have elucidated that during the last centuries of occupation, the theocratic system collapsed and a change began towards a new political and ideological system by the new ruling elites. The analyses have allowed us to understand the logic of built space in three households’ complex and show a high understanding of hierarchy and spatial distribution by its former inhabitants. Obviously, the use of Archaeology of architecture in societies like the Moche requires more studies, because these households have very complex internal divisions, where the spatial unit does not always work independently, but in many cases are linked with other constituting a complex functional space.Este trabajo muestra las primeras aproximaciones obtenidas del uso de la sintaxis espacial en viviendas del tipo residencial en la antigua ciudad Moche (s. VII-IX d. C.. Los estudios realizados en el sitio de huacas del Sol y de la Luna han permitido entender que durante los últimos siglos de ocupación, el sistema teocrático colapsó y se inició un cambio hacia un nuevo sistema político e ideológico por parte de las nuevas elites gobernantes. Los análisis realizados han permitido entender la lógica del espacio construido en tres viviendas complejas y que muestran un alto entendimiento de jerarquía y distribución espacial por parte de sus antiguos habitantes. Evidentemente el uso de la Arqueología de la Arquitectura en sociedades como la Moche necesita mayores estudios, puesto que, estas viviendas presentan divisiones internas muy complejas, donde la unidad espacial no siempre funciona de manera independiente, sino que en muchos casos se articulan con otras constituyendo un espacio funcional complejo.

  19. The determination of maturity levels in source rocks of the La Luna Formation, Maracaibo Basin, Venezuela, based on convention geochemical parameters and asphaltenes; Determinacao do grau de maturacao em rochas geradoras de petroleo, formacao La Luna, Bacia de Maracaibo, Venezuela: parametros geoquimicos convencionais e asfaltenos

    Energy Technology Data Exchange (ETDEWEB)

    Castro, L.P. de [Pontificia Universidade Catolica (PUC-RS), Porto Alegre, RS (Brazil). Centro de Excelencia em Pesquisas sobre o Armazenamento de Carbono; Franco, N. [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil). Dept. de Geologia; Lopez, L.; Lo Monaco, S.; Escobar, G. [Universidad Central de Venezuela (UCV), Caracas (Venezuela); Kalkreuth, W. [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Centro de Excelencia em Analises de Carvao e Rochas Geradoras de Petroleo

    2008-07-01

    The La Luna Formation, main source rock of the Maracaibo Basin was studied by conventional geochemical parameters, used to determine the maturity, and they were compared with the physic-chemical and molecular properties of the asphaltenes present in the bitumen of the rocks. Three wells were studied (A, B and C) with a total of 13 samples. Based on Rock-Eval results the organic matter in well A (455 deg C Tmax) shows a relatively high level of maturation (top of the oil window), whereas the organic matter in well B (435 - 436 deg C Tmax) is in the beginning of the oil window. Tmax values in well C (438 - 446 deg C) and well C suggest an intermediate maturity level. The biomarkers identified in well B and C show ratios indicating an equilibrium state in the maturity level. A good correlation was found comparing the conventional analytical data with the determination of maturity level obtained from the asphaltenes precipitated from the bitumen of the samples. With increased maturity levels the H1 NMR analysis showed enrichment in aromatic molecules in relation to aliphatic, due to the bitumen aromatization process. Similarly, the asphaltenes molecular weight has higher values in samples characterized by elevated maturity levels. This confirms earlier studies that showed that asphaltenes may be utilized as maturity parameter of organic matter. (author)

  20. Fijación biológica de nitrógeno por tres fabáceas (Leguminosae en suelos ácidos de Tabasco, México

    Directory of Open Access Journals (Sweden)

    S. Córdova-Sánchez

    2011-01-01

    Cajanus cajan L., Canavalia ensiformis L. y Mucuna deerengiana L., en rotación y asociación con maíz durante dos ciclos de cultivo, se desarrollaron dos experimentos en un suelo ácido de la sabana de Huimanguillo, Tabasco. En ambos sistemas se evaluaron variables relacionadas con la nodulación de estas fabáceas, así como su efecto sobre el rendimiento de maíz (Zea mays L.; también se cuantificó el N derivado de la atmósfera (Fbn y la eficiencia de absorción de N por el cultivo de maíz a través de la técnica isotópica de 15N. Los resultados muestran que C. cajan L., produjo 66 a 121, C. ensiformis L., 38 a 80 y M. deerengiana L., 45 a 78 nódulos planta-1, con una ms máxima de 14, 7 y 4 g planta-1 en asociación como en rotación, respectivamente. La producción de biomasa por las fabáceas fue de 5,780 para C. cajan L., 7,037 para C. ensiformis L., y 5,284 kg ha-1 para M. deerengiana L., en asociación con maíz. El rendimiento de grano de los diferentes genotipos de maíz en rotación y asociación varió entre 580 a 642 kg ha-1 durante dos ciclos de estudio. El N fijado por estas fabáceas en rotación se considera muy bajo (2 kg N ha-1; mientras que ocurrió mayor fijación en la asociación fabaceae-maíz (135 kg N ha-1, pero la alta dosis de Fbn no repercutió en mayor rendimiento de grano respecto a los testigos.

  1. Vulnerabilidad por aprovechamiento y distribución de especies leñosas desde la perspectiva comunitaria en la reserva cañón del Usumacinta, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Samuel Cabrera-Pérez

    2015-08-01

    Full Text Available El objetivo de la investigación fue docu-mentar los usos y grado de vulnerabilidad de la flora leñosa multiuso, usando para ello la perspectiva de los pobladores, así como describir la distribución en los ambientes de estas especies sobre el territorio que ocupa la comunidad de Niños Héroes, Tenosique, Tabasco, México. Se emplearon métodos etnobotánicos tales como: recorridos de campo con conocedores de la flora del sitio, colecta botánica y aplicación de entrevistas en cada vivienda de la comunidad. Estas últimas, incluyeron preguntas generales y específicas para documentar los usos y pedir colaboración para la realización de un taller comunitario para fundamentar la construcción del índice vulnerabilidad por aprovechamiento de la flora leñosa. Se identificaron 168 especies de flora leñosa útil, de las cuales 97 son multiusos. Éstas se agruparon en 20 categorías de utilidad, entre las que destaca la leña con 71 especies, seguidas por materiales para instrumentos de trabajo de campo (65, materiales para la construcción de casas rurales (63, cerco muerto (53, comestible (53, y cerco vivo (50. La selva y el acahual son los hábitats con mayor número de especies de flora multiusos y proveen al colectivo 27 y 26% del total respectivamente. El 22% de las especies multiusos presentan alta vulnerabilidad de aprovechamiento, mientras que 50% están categorizadas con vulnerabilidad baja por aprovechamiento. El índice aquí evaluado, permite detectar el grado de vulnerabilidad al aprovechamiento de manera local o regional, pero no se corresponde a los índices de amenaza establecidos por la Norma Oficial Mexicana NOM-059-SEMARNAT de protección ambiental de especies nativas de México. Este índice permite poner alertas a nivel local o regional con relación a la fragilidad de las especies. La información generada, sienta bases para el manejo de los recursos y puede servir de guía para las agencias del gobierno, instituciones

  2. Geochemical signatures of bedded cherts of the upper La Luna Formation in Táchira State, western Venezuela: Assessing material provenance and paleodepositional setting

    Science.gov (United States)

    Garbán, G.; Martínez, M.; Márquez, G.; Rey, O.; Escobar, M.; Esquinas, N.

    2017-01-01

    Here we undertook an inorganic geochemical study of Cenomanian-Campanian bedded cherts (the Táchira Ftanita Member of the La Luna Formation) in the western region of the Táchira State, Venezuela. The aim of this study was to determine the paleo-oceanographic and paleo-environmental conditions that governed the deposition of chert beds and put forward a sedimentation model for the Táchira Ftanita Member in the study area. Seventy-two chert samples were collected and trace/rare earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Rb, Cs, Th, U, Y, Co, and Sc) and major/trace elements (SiO2, TiO2, Al2O3, Fe2O3, MgO, CaO, Na2O, K2O, P2O5, Mn, Ba, Sr, Cr, Ni, and V) were determined by ICP-MS and ICP-OES, respectively. On the basis of the stratigraphic abundance and distribution of relatively immobile elements, as well as the distribution of rare earth elements, we established that the detrital sediments associated with the sequences studied have matching characteristics with distinct continental materials, with an intermediate composition, thus pointing to the Guayana Massif as the main source of sediments. In addition, we also determined the influence of hydrothermal input on the chemical composition of some cherts from La Molina Mine. On the basis of geochemistry, we found a biological influence regarding the uptake of dissolved silica for forming chert beds. The application of parameters for relatively immobile elements allowed us to establish a still proximal continental-margin (hemipelagic) for most samples from the Zorca River and a continental-margin for almost all the cherts from the Delicias-Villa Páez section and the remaining samples from La Molina Mine. Finally, we propose that the rhythmicity that accompanies the sequence of bedded cherts is related to changes in the intensity of upwelling patterns of water and/or to variability in the supply of silica dissolved in the Táchira sub-basin.

  3. Providing Meaningful Learning for Students of the Sixth Grade of Middle School: a Study on the Moon Phases. (Breton Title: Propiciando Aprendizagem Significativa Para Alunos do Sexto Ano do Ensino Fundamental: um Estudo sobre as Fases da Lua.) Propiciando el Aprendizaje Significativo Para Alumnos del Sexto Nivel de la Educación General Básica: un Estudio sobre Las Fases de la Luna

    Science.gov (United States)

    Darroz, Luiz Marcelo; Samudio Pérez, Carlos Ariel; da Rosa, Cleci Werner; Heineck, Renato

    2012-07-01

    We relate in this article a didactic experience studying the moon phases with a group of middle school students of a private school of the municipality of Passo Fundo, RS. Based on David Ausubel's Meaningful Learning Theory, we have sought to develop a proposal following a didactic model which simulates the phases of the Moon, as based on the previous conceptions of the students. The signs of learning were evidenced by means of memory registries of the activity. From the obtained results we believe that the proposal achieved its goals, since the students were able to identify, differentiate and transfer the phenomenon of the moon phases to new contexts. Thus, it is concluded that a methodology focused on a meaningful content for the students is fundamental to the construction and genuine grasping of what is being learned. Neste artigo, relata-se uma experiência didática de estudo das fases da Lua com uma turma do 6° ano do Ensino Fundamental, de uma escola privada do município de Passo Fundo, RS. Tendo como fundamentação teórica a Teoria da Aprendizagem Significativa de David Ausubel, buscou-se desenvolver a proposta a partir de um modelo didático que simula as fases da Lua e com base nas concepções prévias dos estudantes. Os indícios da aprendizagem foram constatados através de registros de memórias da atividade. Pelos resultados apresentados, acredita-se que a proposta alcançou seus objetivos, uma vez que os estudantes conseguiram identificar, diferenciar e transferir o fenômeno das fases da Lua para novos contextos. Assim, conclui-se que uma metodologia com enfoque em um conteúdo significativo ao estudante é fundamental para a construção e compreensão genuína do que está sendo aprendido. En este artículo se relata una experiencia didáctica de estudio de las fases de la Luna con una clase de 6º año de la educación general básica de una escuela privada del municipio de Passo Fundo, RS. Teniendo como fundamentación teórica la Teor

  4. Pierrot, poeta "ebbro di luna"

    Directory of Open Access Journals (Sweden)

    Anna Scalfaro

    2012-11-01

    Full Text Available Arnold Schönberg composed Pierrot Lunaire in 1912 in Berlin, for the cabaret singer Albertine Zehme. The work consists of a series of twentyone melologues, on texts by the Belgian symbolist poet Albert Giraud, translated into German by Otto Erich Hartleben, for narrator (Sprechgesang, or 'spoken song' and instrumental ensemble (piano, clarinet in A or bass clarinet in B flat, flute or piccolo, violin or viola, cello, in various combinations depending on the songs. Pierrot Lunaire is one of the most representative compositions of the so-told "atonal" phase of Schönberg’s work, characterized by his abandon of tonal harmonic language. The didactic-course, aimed at students of the lower secondary school, is generally based on the entire cycle and then focuses on the first piece, Mondestrunken (Moondrunk, in order to analyse in more detail a few aspects of the Author’s musical writing.

  5. Luna County 2000 Census Blocks

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    Earth Data Analysis Center, University of New Mexico — TIGER, TIGER/Line, and Census TIGER are registered trademarks of the Bureau of the Census. The Redistricting Census 2000 TIGER/Line files are an extract of selected...

  6. Luna County 1990 Census Blocks

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This data set is a vector polygon digital data structure taken from the Census Bureau's TIGER/Line Files, 1994, for New Mexico. The source software used was ARC/INFO...

  7. Luna County 2010 Census Edges

    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...

  8. Luna County 2010 Census Blocks

    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...

  9. Luna County 2010 Census Roads

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    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. Luna County Current Point Landmarks

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    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...

  11. Luna County Current Area Landmark

    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...

  12. Luna County 2010 Census Tracts

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    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...

  13. "Uccidiamo il chiaro di luna"

    OpenAIRE

    Losada Liniers, Teresa

    2001-01-01

    En el momento en el que el Futurismo se desarrolla como movimiento independiente, se mueven también en distintos campos artísticos unas tendencias que darán lugar al arte contemporáneo, al nuevo modo de concebir el baile, la música, la pintura y la literatura, no como producciones aisladas unas de otras sino como obras de arte distintas que puedan dar lugar a la obra de arte total.

  14. A multidisciplinary approach to reveal floodplain palaeohydrography in the surrounding of ancient Luna archaeological site (lower Magra River valley, NW Italy)

    Science.gov (United States)

    Bini, Monica; Bisson, Marina; Chelli, Alessandro; Pappalardo, Marta

    2010-05-01

    The Magra floodplain (NW Italy) is a coastal plain that was created during the last 2.5 millennia by the River Magra itself and by minor streams draining the southern slope of the Apuan Alps. The coastline progressively migrated from the mountain foothills to its present position, 2.5 km seaward. Available stratigraphical data suggest that the marine gulf that occupied the area before Bronze age gradually changed into a lagoon; this was finally separated from the open sea and became a complex of marshes that were finally silted up. All these environments provided opportunities for settlement and land use: early settlement is accounted for in the Iron Age by Ligurian people that were finally defeated by the Romans. In the 2nd century bC the roman colony of Luna (today Luni) was founded in the area. After the Imperial Age Luni gradually decayed and was finally abandoned in 1204. Post-Roman alluviation is thought to be partly responsible for the city decline and the survival of only scattered farmsteads in its surroundings. Settlement and land use history from Iron Age onward are thus tightly dependant from drainage network evolution in the area. Although historical maps provide some chronological constraints about the advance of the Magra floodplain it is still unknown how and when precisely the transformation of a lagoon environment into a dry land occurred. In particular no data are available about the position of the mouths of the Magra River and of the minor streams at Roman Times and little is known about channel migration since the Early Middle Ages and information about land reclamation are difficult to find because dispersed. In order to identify abandoned fluvial channels, a series of digital elaborations were applied to different types of Remotely-Sensed Images. In detail, the used data consist of satellite images (Landsat 7 - ETM) and airborne orthophotos (AIMA) covering a temporal interval of five years (from 1998 to 2002) and characterized by a spatial

  15. Ciudadanía y sustentabilidad ambiental en la ciudad: la recuperación del humedal Angachilla y la organización local en la Villa Claro de Luna, Valdivia, Chile

    Directory of Open Access Journals (Sweden)

    Juan C Skewes

    2012-01-01

    Full Text Available La recuperación del humedal Angachilla por la junta de vecinos de la Villa Claro de Luna en la ciudad de Valdivia constituye un ejercicio donde se yuxtaponen la preocupación ambiental y el ejercicio de la soberanía ciudadana. Por medio de su organización, los residentes logran, por una parte, contribuir a la protección del medio ambiente; y por la otra, incrementar su participación en los procesos urbanos de una ciudad intermedia. A partir del redescubrimiento de las relaciones con la naturaleza, la comunidad amplía sus repertorios de significación y elabora nuevas formas de valorización del territorio basadas en la extensión de su cotidianidad y en las dinámicas de vida asociadas al paisaje n atural, las cuales permiten la incorporación de la naturaleza a la ciudad.

  16. The Moon Phases in a Paper Box. (Spanish Title: Las Fases de la Luna en Una Caja de Cartón.) As Fases da Lua Numa Caixa de Papelão

    Science.gov (United States)

    de Fátima O. Saraiva, Maria; Amador, Cláudio B.; Kemper, Érico; Goulart, Paulo; Muller, Angela

    2007-12-01

    We present a very simple concrete model to demonstrate the concept of phases of an illuminated body. The main objective of our model is to help the understanding of the Moon phases as viewed from the perspective of an observer on Earth. The material allows the visualization of two important effects: (1st) even though all the time half Moon is illuminated by the Sun, we see different fractions of the illuminated Moon surface, depending on our angle of sight; (2nd) the orientation of the convex part of the Moon in the crescent and waning phases on the sky also depends on our perspective from Earth. The use of a closed box allows one to see the contrast among the different phases with no need of a dark room. We also present a text on the Moon phases, emphasizing the dependence of the aspect of the bright part on the angle of sight. En este trabajo proponemos la construcción de material didáctico de bajo costo para demostración del concepto de fases de un cuerpo iluminado. El principal objetivo de nuestro material es facilitar la comprensión de las fases de la Luna desde la perspectiva de un observador en la Tierra. El material ayuda la visualización de dos efectos importantes: (1º) a pesar de tener siempre la mitad de la Luna (representada por una bolita de espuma plástica o de ping-pong), iluminada por el Sol ( representado por una fuente de luz natural o artificial), vemos diferentes fracciones de su superficie iluminada, dependiendo del ángulo por el cual la vemos; (2º) la orientación del borde convexo de la Luna en las fases Creciente y Menguante también depende de la perspectiva por la cual la miramos desde la Tierra. El uso de una caja cerrada permite observar el contraste entre las diferentes fases sin necesidad de estar en un recinto oscuro. Presentamos también un texto explicativo sobre las fases de la Luna, enfatizando la dependencia de la apariencia de la parte iluminada con el ángulo de visión. Neste trabalho propomos a construção de

  17. Reading Intermediality: Lorca’s Viaje a la luna (“Journey to the Moon,” 1929 and Un chien andalou (Buñuel/Dalí, 1929

    Directory of Open Access Journals (Sweden)

    Paul Julian Smith

    2014-10-01

    Full Text Available This article will treat two experimental short films, the first one of the most famous in cinema history; the second a little known script, lost for many years and brought to the screen only sixty years after it was written. The former is Un chien andalou of 1929, generally attributed to both director Luis Buñuel and Catalan painter Salvador Dalí (who claims first screenwriting credit in the film itself. The latter is Viaje a la luna, written also in 1929 by poet and dramatist Federico García Lorca and filmed by Frederic Amat, a contemporary Catalan painter, in 1998, the centenary of Lorca’s birth. Normal 0 false false false EN-US JA X-NONE

  18. University Students' Conceptions about the Moon Phases. (Spanish Title: Concepciones de Estudiantes Universitários sobre Las Fases de la Luna.) Concepções de Estudantes Universitários sobre as Fases da Lua

    Science.gov (United States)

    de Fátima Oliveira Saraiva, Maria; da Silveira, Fernando Lang; Steffani, Maria Helena

    2011-07-01

    In this article we describe the development of a multiple choice test about lunar phases and analyze the results of its application to ten groups of Physics students at the UFRGS. During the improvement of the test, we noticed that the percentage of right answers about some concepts increased significantly when associated with the reformulation of the question, emphasizing the importance of being careful to avoid incorrect answers generated by unclear questions, and not by ignorance on the matter. We confirm the results of other studies that show that students have great difficulty to relate the Moon's phase with its position in the sky at given time. On the other hand, our results suggest that, in general, students of Physics understand the phenomenon of lunar phases better than the average of university students. En estese artículo se describe la elaboración de una prueba de opción múltiple sobre las fases de la Luna y se analizan los resultados de su aplicación en diez grupos de estudiantes de Física de UFRGS. Durante el mejoramiento de la prueba observamos que el porcentaje de aciertos creció considerablemente cuando considerada una nueva redacción de la pregunta, destacando el cuidado que se debe tomar a fin de evitar respuestas incorrectas generadas por preguntas poco claras y no a causa de la ignorancia de los estudiantes sobre el tema. Confirmamos los resultados de otros estudios que las mayores dificultades de los alumnos sobre el tema fases de la Luna están en relacionar la fase de la Luna con su posición en el cielo en determinado momento. Por otra parte, nuestros resultados sugieren que, en general, los estudiantes de la Física comprenden mejor el fenómeno de las fases lunares que el promedio de los estudiantes universitarios. Neste artigo descrevemos a elaboração de um teste de múltipla escolha sobre as fases da Lua e analisamos os resultados de sua aplicação em dez grupos de estudantes de Física da UFRGS. Durante o aprimoramento do

  19. Arboreas voces solis luneque loquentes: la visita de Alejandro Magno a los árboles del sol y de la luna en las crónicas del siglo XII

    Directory of Open Access Journals (Sweden)

    José Miguel De Toro Vidal

    2016-08-01

    Full Text Available El encuentro de Alejandro Magno con los árboles parlantes del Sol y de la Luna en un bosque sagrado de la India, constituye uno de los muchos episodios maravillosos de la leyenda alejandrina difundida en la Edad Media. El objetivo del presente artículo es estudiar el momento en que los cronistas deciden incorporar este pasaje en sus obras e indagar en las causas de esta decisión. Para ello se han revisado las crónicas universales del siglo XII y principios del XIII, cotejándolas con otras obras producidas en la época. Se aprecia que tanto la Historia Scholastica de Pedro Coméstor como los mapamundis contribuyeron a la aceptación del episodio. No obstante, la inclusión del pasaje en las crónicas no obedece tanto a la afirmación del encuentro con los árboles como un hecho cierto de la historia, sino al proyecto histórico-literario previsto por el autor de cada crónica.

  20. Fácies Orgânica da Formação La Luna, Bacia do Valle Superior del Magdalena, Colômbia:Implicações para a Geração de Petróleo e Caracterização Paleoambiental.

    Directory of Open Access Journals (Sweden)

    Juliana Andrade Iemini

    2007-08-01

    Full Text Available Upper Cretaceous pelitic rocks generate most of the oil reserves in Colombia. In Del Magdalena Upper Valley (MUV, the existenceof good quality outcrops and thermal evolution levels that vary from immaturity to the end of the oil generation “window” makes it one of themost appropriate regions for the study of primary migration and generation of oil in Upper Cretaceous. The main objectives of this work wereto study the organic facies of La Luna Formation in an outcrop section called Riacho Bambuca (Bambuca Creek, determine the oil generationpotential and characterize the paleoenvironment. For this research, 24 samples were used in palynofacies analysis (characterization ofthe kerogen components assembly and in organic geochemistry analysis (Total Organic Carbon – TOC analysis and Rock-Eval pyrolysis,provided by Colombia Oil Institute – ECOPETROL. The palynofacies analysis included the use of microscopy techniques (transmitted whitelight and incident blue light. Furthermore, a Spore Coloration Index (SCI analysis was made in order to determine the thermal maturationstage. The studied material was composed mainly of an amorphous organic substance, with its fluorescent coloration varying from yellow tobright orange. The palynomorph group is represented by spore morph and dinoflagellate cysts. The ligneous material are present in very lowpercentages; they are mainly opaque phytoclasts. The results of geochemical analysis showed TOC contents ranging from medium to high,excellent potential for the generation of hydrocarbons (PG > 4 mg HC/g of rock, hydrogen index ranging from 329 to 589 mg HC/g, andlow values of oxygen index, characterizing type II kerogen. The low degree of thermal maturation was determined by Spore Coloration Indexvalues ranging from 2,5 to 3,0, Tmax values below 440°C and Hydrocarbon Production Index inferior to 0,2. According to the organic faciesdata, La Luna Formation deposited in a marine environment with facies from

  1. Luna County Blocks, Housing Vacancy Status (2010)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The once-a-decade decennial census was conducted in April 2010 by the U.S. Census Bureau. This count of every resident in the United States was mandated by Article...

  2. 2010, Luna County, NM, Current Area Hydrography

    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...

  3. Luna County 2000 Census Block Groups

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — TIGER, TIGER/Line, and Census TIGER are registered trademarks of the Bureau of the Census. The Redistricting Census 2000 TIGER/Line files are an extract of selected...

  4. Luna County Blocks, Households by Type (2010)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The once-a-decade decennial census was conducted in April 2010 by the U.S. Census Bureau. This count of every resident in the United States was mandated by Article...

  5. Luna County 1990 Census Block Groups

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This data set is a vector polygon digital data structure taken from the Census Bureau's TIGER/Line Files, 1994, for New Mexico. The source software used was ARC/INFO...

  6. Luna County Block Groups, Housing Tenure (2010)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The once-a-decade decennial census was conducted in April 2010 by the U.S. Census Bureau. This count of every resident in the United States was mandated by Article...

  7. 2010, Luna County, NM, Linear Hydrography

    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...

  8. Deep water invasions in oil fields of the gulf of Mexico: a challenge for the application of environmental isotopes; Invasiones de aguas profundas en yacimientos petroleros del golfo de Mexico: un reto para la aplicacion de isotopos ambientales

    Energy Technology Data Exchange (ETDEWEB)

    Birkle, Peter [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2001-07-01

    It was verified the use of environmental isotopes as a useful method to improve the efficiency of the present exploitation in oil fields of the Gulf of Mexico. In general, the stable isotopes like deuterium, 18 O, 13 C, 37 Cl, 87 Sr and 34 S, support in questions on the origin of waters, its quality, the geochemistry evolution, recharge processes, interaction water-rock, origin of the salinity and contamination processes, whereas the radioactive isotopes (Tritium, 14 C, 36 I and 129 I) provide information on the time of circulation, the origin and the age of underground waters. Since year 1998, the Gerencia de Geotermia of the Instituto de Investigaciones Electricas is making investigation projects in the oil fields of the Actives of Production Luna, Pol-Chuc, Chilpilla-Colomo (all of them in the state of Tabasco) and Cactus-Sitio Grande (Chiapas) in the South Region of PEMEX Exploration and Production (PEP). As primary target of these studies hidrogeological models were developed on the migration and circulation of the fluids in the oil fields with the purpose of limiting the water invasion in producing wells and to increase the crude oil production. [Spanish] Se comprobo el uso de los isotopos ambientales como un metodo util para mejorar la eficiencia de la explotacion actual en yacimientos petroleros del golfo de Mexico. En general, los isotopos estables como deuterio, 18 O, 13 C, 37 Cl, 87 Sr y 34 S, apoyan en cuestiones sobre el origen de las aguas, su calidad, la evolucion geoquimica, procesos de recarga, interaccion agua-roca, origen de la salinidad y procesos de contaminacion, mientras que los isotopos radiactivos (Tritio, 14 C, 36 l Y 129 I) proporcionan informacion sobre el tiempo de circulacion, el origen y la edad de las aguas subterraneas. Desde el ano 1998, la Gerencia de Geotermia del Instituto de Investigaciones Electricas esta realizando proyectos de investigacion en los campos petroleros de los activos de Produccion Luna, Pol-Chuc, Chilpilla

  9. Efficacy and safety of long-acting pasireotide or everolimus alone or in combination in patients with advanced carcinoids of the lung and thymus (LUNA): an open-label, multicentre, randomised, phase 2 trial.

    Science.gov (United States)

    Ferolla, Piero; Brizzi, Maria Pia; Meyer, Tim; Mansoor, Wasat; Mazieres, Julien; Do Cao, Christine; Léna, Hervé; Berruti, Alfredo; Damiano, Vincenzo; Buikhuisen, Wieneke; Grønbæk, Henning; Lombard-Bohas, Catherine; Grohé, Christian; Minotti, Vincenzo; Tiseo, Marcello; De Castro, Javier; Reed, Nicholas; Gislimberti, Gabriella; Singh, Neha; Stankovic, Miona; Öberg, Kjell; Baudin, Eric

    2017-12-01

    There are no data from prospective studies focused exclusively on patients with advanced lung and thymic carcinoids. We aimed to assess the efficacy and safety of long-acting pasireotide and everolimus, administered alone or in combination, in patients with advanced carcinoids of the lung or thymus. LUNA was a prospective, multicentre, randomised, open-label, phase 2 trial of adult patients (aged >18 years) with advanced (unresectable or metastatic), well differentiated carcinoid tumours of the lung or thymus, with radiological progression within 12 months before randomisation, and a WHO performance status of 0-2. At each centre, the investigator or their designee registered each patient using an interactive voice recognition system into one of the three treatment groups. The randomisation allocation sequence was generated by an external company; patients were randomly assigned (1:1:1) to receive treatment with long-acting pasireotide (60 mg intramuscularly every 28 days), everolimus (10 mg orally once daily), or both in combination, for the core 12-month treatment period. Patients were stratified by carcinoid type (typical vs atypical) and line of study treatment (first line vs others). The primary endpoint was the proportion of patients progression-free at month 9, defined as the proportion of patients with overall lesion assessment at month 9 showing a complete response, partial response, or stable disease according to local Response Evaluation Criteria in Solid Tumors, version 1.1, assessed in the intention-to-treat population. Safety was assessed in all patients who received at least one dose of study drug and had at least one post-baseline safety assessment. The trial is registered with ClinicalTrials.gov, number NCT01563354. The extension phase of the study is ongoing. Between Aug 16, 2013, and Sept 30, 2014, 124 patients were enrolled from 36 centres in nine countries: 41 were allocated to the long-acting pasireotide group, 42 to the everolimus group, and

  10. Balance hidrico y clasificacion climatica del estado de Tabasco, Mexico

    National Research Council Canada - National Science Library

    Ruiz-Alvarez, O; Arteaga-Ramirez, R; Vazquez-Pena, M.A; Ontiveros Capurata, R.E; Lopez-Lopez, R

    2012-01-01

    ... de este Estado con la metodologia de Thornthwaite. Del total de estaciones climatologicas del Estado, se seleccionaron 40 con datos promedios mensuales de temperatura y precipitacion, el resto no conto con ambas variables...

  11. Isolation of microorganisms with chinitase, protease and keratinase activities from petroleum contaminated soils

    Energy Technology Data Exchange (ETDEWEB)

    Cervantes-Gonzalez, E.; Rojas-Avelizapa, L.; Cruz-Camarillo, R. [1 Escuela Nacional de Ciencias Biologicas Departamento de Microbiologia, Laboratorio de Enzimas Microbianas, Mexico City (Mexico); Rojas-Avelizapa, N.G. [Programa de Biotecnologia del Petroleo, Instituto Mexicano del Petroleo, Mexico City (Mexico)

    2005-07-01

    The most important part in one process of bio-remediation are the microorganisms with the capacities to degrade target compounds, this research is based to find microorganisms hydrocarbon-clastic with enzyme activities to degrade chicken feather (keratinolytic activity) which is also a contaminant and has been used such as sorbent of petroleum and can be composted after the oil spill cleanup is complete, the isolation was also to degrade shrimp waste (chitinolitic and proteolitic activity) which is waste material that can be used in compost or such as sorbent of petroleum too. We isolated mesofilic aerobic microorganisms from mexican soils located in Tabasco, Mexico. We achieved to isolate 105 bacteria from 10 soils, 90% was Bacillus Gram (-) which are common in soils and all were hydrocarbon-clastic, only 7 different bacteria had protease and chitinase activity and 12 bacteria had keratinase activity. So we found three fungi and one actinomycete with capacity to degrade hydrocarbons and presence of chitinase activity. The results of growth and enzyme activities in liquid culture showed that the protease activity was produced between 18 and 48 h in almost all bacteria, the chitinase activity started at 12 h but was slight , only 0.5 U/ml, and the keratinase activity was produced after 6 h of incubation and there were correlation between logarithmic phase of growth and enzymes production. With this study we showed the existence of some enzyme activities from microorganisms that live in hostile habitats. This, can be useful in bio-treatment soils by the possible use of this type of residues that can be bio-degraded at the same time that the hydrocarbons increasing the speed or the quality of cleanup in soils. (authors)

  12. Effect of extracts of plants with insecticidal activity on the control of Microtheca ochroloma Stal (Col: Chrysomelidae in the laboratory

    Directory of Open Access Journals (Sweden)

    Cíntia Grendene Lima

    2008-03-01

    Full Text Available Extracts of plants with insecticidal activity were tested on the control of Microtheca ochroloma (Col.: Chrysomelidae, an important insect-pest of Brassicaceae, in the larval and adult phases. Two 3-day-old larvae, kept under laboratory conditions (25ºC temperature, 70% relative humidity and 14 hours of photophase, were placed in a glass tube with a leaf of Chinese cabbage (Brassica chinensis previously treated with aqueous extracts (10% p/v of chinaberry leaf (Melia azedarach, chinaberry branch, and tobacco powder (Nicotiana tabacum. The same procedure was repeated in two assays with adult insects. In the first assay, all the previously-mentioned extracts were used, in addition to DalNeem (commercial product of Azadirachta indica. In the second, the insects were exposed to extracts of tabasco pepper fruits (Capsicum frutescens, Surinam cherry (Eugenia unifl ora, jambolan (Syzygium cuminii and eucalyptus leaves (Eucalyptus sp.. All the tests consisted of 10 insects per treatment, with five repetitions in the first test using adult insects and six repetitions in the others. Observations were made daily up to the fifth day, aiming to evaluate the mortality of the insects. All the tested extracts resulted in an effective control of the larvae of M. ochroloma. In relation to the adult insects, only the extracts of tobacco powder and DalNeem showed effective control.

  13. Descripción de la rotiferofauna presente en Ciénaga La Redonda, Ciénaga La Luna, Ciénaga Pajaral y Canal Dragado durante la época lluviosa. Complejo de Pajarales, Departamento de Magdalena, Colombia

    Directory of Open Access Journals (Sweden)

    Celis Melo Juan Sebastián

    2007-12-01

    Full Text Available La Composición y Abundancia de Rotíferos presentes durante la época lluviosa en las ciénagas de La Redonda, ciénaga La Luna, ciénaga Pajaral y Canal Dragado (Magdalena, Colombia fueron determinadas utilizando el conteo microscópico. La colecta de las muestras se llevó a cabo los días 15 septiembre, 29 septiembre, 23 octubre, 16 noviembre, 23 noviembre y 12 diciembre de 2006, mediante una botella de tipo Van Dorn. Paralelamente en cada estación se tomaron datos de las variables: salinidad, temperatura, pH y oxígeno empleando sondas multiparámetro WTW. La diversidad de rotíferos fue calculada empleando el índice de Shannon-Wienner H’ (log10 comparando entre estaciones y fechas de muestreo para establecer variaciones a lo largo del periodo de estudio, además se relacionaron gráficamente las variables fisicoquímicas con los valores de diversidad calculados empleando un valor de 0,05 y un intervalo de confianza del 95%. En total, fueron encontradas 20 especies pertenecientes a las familias Brachionidae, Lecanidae, Filiniidae, Synchaetidae, Hexarthriidae y Testudinellidae, siendo las familias Brachionidae y Lecanidae las más abundantes. La relación entre la diversidad encontrada y las variables fisicoquímicas medidas indican que la salinidad es la principal responsable de la diversidad de rotíferos durante el periodo de estudio. En conclusión, la reapertura de los canales de comunicación entre el río Magdalena y las ciénagas del Complejo de Pajarales han disminuido los valores de salinidad sugiriendo un aumentó en la diversidad de rotíferos. Palabras clalve: rotífero, laguna costera, disturbio ecosistémico, salinidad, complejo pajarales.

  14. Astronomy at School: Measurements of the Earth-Moon Distance. (Spanish Title: Astronomía en la Escuela: Medición de la Distancia Tierra-Luna.) Astronomia na Escola: Medida da Distância Terra-Lua

    Science.gov (United States)

    Paolantonio, Santiago; Pintado, Olga I.

    2006-12-01

    The aim of this project is to approach High School students to Science. We propose to measure the Earth-Moon distance using the parallax. The observation and measurements techniques and all the calculations needed are described in this paper. The results obtained in a test experience realized during 2003 are presented. This test shows that this is a feasible project and also shows which things needed to be improved. Se plantea la propuesta de un proyecto educativo dirigido al Nivel Medio de enseñanza, consistente en la determinación de la distancia Tierra - Luna por paralaje. Se describen las técnicas de observación, mediciones y cálculos. Se proporcionan a continuación los resultados obtenidos en la experiencia piloto realizada en el 2003, la que permitió comprobar la factibilidad de llevar a cabo la propuesta, así como perfeccionar los diferentes aspectos involucrados en la misma. Propomos neste trabalho um projeto educativo dirigido ao Ensino Médio que consiste na determinação da distância Terra-Lua pelo efeito da paralaxe. As técnicas de observação, medidas e cálculos auxiliares são descritos, e os resultados obtidos numa experiência-teste realizada no ano de 2003 apresentados. Este último teste permitiu comprovar a viabilidade de execução da proposta e aperfeiçoar diversos aspectos da mesma.

  15. Ovarian structure and oogenesis of the extremophile viviparous teleost Poecilia mexicana (Poeciliidae) from an active sulfur spring cave in Southern Mexico.

    Science.gov (United States)

    Torres-Martínez, Aarón; Hernández-Franyutti, Arlette; Uribe, Mari Carmen; Contreras-Sánchez, Wilfrido Miguel

    2017-12-01

    The structure of the ovary and oogenesis of Poecilia mexicana from an active sulfur spring cave is documented. Poecilia mexicana is the only poeciliid adapted to a subterranean environment with high hydrogen sulfide levels and extreme hypoxic conditions. Twenty females were captured throughout one year at Cueva del Azufre, located in the State of Tabasco in Southern Mexico. Ovaries were processed with histological techniques. P. mexicana has a single, ovoid ovary with ovigerous lamella that project to the ovarian lumen. The ovarian wall presents abundant loose connective tissue, numerous melanomacrophage centers and large blood vessels, possibly associated with hypoxic conditions. The germinal epithelium bordering the ovarian lumen contains somatic and germ cells forming cell nests projecting into the stroma. P. mexicana stores sperm in ovarian folds associated with follicles at different developmental phases. Oogenesis in P. mexicana consisted of the following stages: (i) oogonial proliferation, (ii) chromatin nucleolus, (iii) primary growth, subdivided into: (a) one nucleolus, (b) multiple nucleoli, (c) droplet oils-cortical alveoli steps; (iv) secondary growth, subdivided in: (a) early secondary growth, (b) late secondary growth, and (c) full grown. Follicular atresia was present in all stages of follicular development; it was characterized by oocyte degeneration, where follicle cells hypertrophy and differentiate in phagocytes. The ovary and oogenesis are similar to these seen in other poeciliids, but we found frequent atretic follicles, melanomacrophage centers, reduced fecundity and increased of offspring size. © 2017 Wiley Periodicals, Inc.

  16. High School Student's Alternative Conceptions About the Phenomenon of the Formation of the Moon Phases. (Spanish Title: Concepciones Alternativas de Alumnos de Educación Media Sobre el Fenómeno de Formación de las Fases de La Luna.) Concepções Alternativas de Alunos do Ensino Médio Sobre o Fenômeno de Formação das Fases da Lua

    Science.gov (United States)

    Iachel, Gustavo; Langhi, Rodolfo; Fernandes Scalvi, Rosa Maria

    2008-07-01

    Forty students, at ages between 14 and 18 years old, from three schools in Bauru city, were questioned about their alternative conceptions concerning the phenomenon of formation of the Moon Phases. It was observed that some of the pupils confound the phenomenon of the formation of the Moon Phases with the phenomenon of the formation of the lunar eclipses, others are unaware of the reason of the phenomenon, they present incoherent alternative conceptions of the reality or incomplete conceptions. The results found here are aimed at the teachers of Elementary Education and can be used as a subsidy for future development of new pedagogical methods. Cuarenta estudiantes, con edad entre 14 y 18 años, pertenecientes a tres escuelas de la ciudad de Bauru, fueron cuestionados sobre sus concepciones alternativas acerca del fenómeno de la formación de las fases de la Luna. Fue observado que algunos alumnos confunden el fenómeno de formación de las fases de la Luna con el fenómeno de formación de los eclipses lunares, otros desconocen el motivo delfenómeno, presentan concepciones alternativas incoherentes con la realidad o bien presentan concepciones incompletas. Los resultados aquí encontrados son destinados a los profesores de la Enseñanza Básica y podrán ser usados como ayuda para el futuro desarrollo de nuevos métodos pedagógicos. Quarenta estudantes, com idades entre 14 e 18 anos, pertencentes a três escolas da cidade de Bauru, foram questionados sobre suas concepções alternativas acerca do fenômeno de formação das fases da Lua. Foi observado que alguns dos alunos confundem o fenômeno da formação das fases da Lua com o fenômeno da formação dos eclipses lunares, outros desconhecem o motivo do fenômeno, apresentam concepções alternativas incoerentes com a realidade ou então concepções incompletas. Os resultados aqui encontrados são destinados aos professores do Ensino Básico e poderão ser usados como subsídio parafuturo desenvolvimento de

  17. Luna County Block Groups, Households by Type (2010)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The once-a-decade decennial census was conducted in April 2010 by the U.S. Census Bureau. This count of every resident in the United States was mandated by Article...

  18. Luna County 2010 Census Voting District County-based (VTD)

    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...

  19. La misma luna. Tarea para desarrollar las destrezas comunicativas

    Directory of Open Access Journals (Sweden)

    María Isabel Rubio Navarro

    2012-08-01

    Full Text Available Centrada en el desarrollo de la Comprensión y Expresión Orales, principalmente, esta tarea tiene en cuenta las cinco destrezas, es decir, Interacción, Comprensión Lectora, Expresión Escrita, Comprensión Auditiva y Expresión Oral. Esta tarea está dirigida a aprendientes de Español Lengua Extranjera con un nivel B2/C1. Ha sido creada para ser impartida en clases de Expresión y Comprensión Orales de Master Enseignement (Master de Enseñanza de la Université de Picardie-Jules Verne, Francia. Cabe destacar el contexto casi perfecto para impartir una clase. Nos encontramos con aprendientes totalmente motivados y participativos que quieren mejorar su nivel de español de manera efectiva. Estos aprendientes presentan una larga trayectoria tanto en la formación universitaria como en el estudio del español de España. Por ello, se ha querido estudiar el español de América, concretamente el español de México focalizándolo en el tema de la inmigración.

  20. La misma luna. Tarea para desarrollar las destrezas comunicativas

    OpenAIRE

    María Isabel Rubio Navarro

    2012-01-01

    Centrada en el desarrollo de la Comprensión y Expresión Orales, principalmente, esta tarea tiene en cuenta las cinco destrezas, es decir, Interacción, Comprensión Lectora, Expresión Escrita, Comprensión Auditiva y Expresión Oral. Esta tarea está dirigida a aprendientes de Español Lengua Extranjera con un nivel B2/C1. Ha sido creada para ser impartida en clases de Expresión y Comprensión Orales de Master Enseignement (Master de Enseñanza) de la Université de Picardie-Jules Verne, Francia. ...

  1. ICON - Media Luna Reef 2010 Meteorological and Oceanographic Observations

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Atlantic Oceanographic and Meteorological Laboratory (AOML) of OAR is conducting research on the influence of meteorological and oceanographic factors upon coral...

  2. ICON - Media Luna Reef 2009 Meteorological and Oceanographic Observations

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Atlantic Oceanographic and Meteorological Laboratory (AOML) of OAR is conducting research on the influence of meteorological and oceanographic factors upon coral...

  3. La misma luna. Tarea para desarrollar las destrezas comunicativas

    Directory of Open Access Journals (Sweden)

    María Isabel Rubio Navarro

    2012-01-01

    Full Text Available Centrada en el desarrollo de la Comprensión y Expresión Orales, principalmente, esta tarea tiene en cuenta las cinco destrezas, es decir, Interacción, Comprensión Lectora, Expresión Escrita, Comprensión Auditiva y Expresión Oral.Esta tarea está dirigida a aprendientes de Español Lengua Extranjera con un nivel B2/C1. Ha sido creada para ser impartida en clases de Expresión y Comprensión Orales de Master Enseignement (Master de Enseñanza de la Université de Picardie-Jules Verne, Francia. Cabe destacar el contexto casi perfecto para impartir una clase. Nos encontramos con aprendientes totalmente motivados y participativos que quieren mejorar su nivel de español de manera efectiva. Estos aprendientes presentan una larga trayectoria tanto en la formación universitaria como en el estudio del español de España. Por ello, se ha querido estudiar el español de América, concretamente el español de México focalizándolo en el tema de la inmigración.

  4. Luna County Blocks, Median Age by Sex (2010)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The once-a-decade decennial census was conducted in April 2010 by the U.S. Census Bureau. This count of every resident in the United States was mandated by Article...

  5. Luna County Block Groups, Housing Vacancy Status (2010)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The once-a-decade decennial census was conducted in April 2010 by the U.S. Census Bureau. This count of every resident in the United States was mandated by Article...

  6. Luna County Block Groups, Race and Hispanic Ethnicity (2010)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The once-a-decade decennial census was conducted in April 2010 by the U.S. Census Bureau. This count of every resident in the United States was mandated by Article...

  7. Nodes for Luna County, New Mexico, 2006se TIGER

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The 2006 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage...

  8. Soil Survey Geographic (SSURGO) database for Luna County, New Mexico

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This data set is a digital soil survey and generally is the most detailed level of soil geographic data developed by the National Cooperative Soil Survey. The...

  9. Luna County Blocks, Race and Hispanic Ethnicity (2010)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The once-a-decade decennial census was conducted in April 2010 by the U.S. Census Bureau. This count of every resident in the United States was mandated by Article...

  10. Study on grosstesticular abnormalities of rams and bucks at Luna ...

    African Journals Online (AJOL)

    Testicular atrophy was the most frequent genital abnormality encountered in both species followed by epididymitis in bucks and sperm granuloma in rams. The incidence of sperm granuloma was higher (p<0.01) in rams than in bucks. In rams, the incidence of testicular atrophy (p<0.01) and epididymitis (p<0.05) was ...

  11. Luna County Blocks, Average Household Size by Tenure (2010)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The once-a-decade decennial census was conducted in April 2010 by the U.S. Census Bureau. This count of every resident in the United States was mandated by Article...

  12. Ex Luna Scientia: The Lunar Occultation Explorer (LOX)

    Science.gov (United States)

    Miller, Richard

    2017-01-01

    The Lunar Occultation Explorer (LOX) is a next-generation mission concept that provides new capabilities for time-domain astrophysics and established the Moon as a platform for nuclear astrophysics. Performance requirements are driven by Type-Ia supernova (SNeIa) science goals that seek to revel details of these profoundly radioactive objects, including their diversity. Primary science objectives include, but are not limited to, probing the fundamental thermonuclear physics processes, performing a census of progenitors and their explosion mechanisms, and evaluating the environmental conditions and intrinsic systematics of these enigmatic objects. LOX provides new capabilities for all-sky, continuous monitoring in the MeV regime (0.1-10 MeV) by leveraging the Lunar Occultation Technique (LOT). Key benefits of the LOX/LOT approach include maximizing the ratio of sensitive-to-total deployed mass, low implementation risk, and demonstrated operational simplicity that leverages extensive experience with planetary orbital geochemistry investigations; LOX also enables long-term monitoring of MeV gamma-ray sources, a critical capability for SNeIa science. Proof-of-principle efforts validated all aspects of the mission using previously deployed lunar science assets, and led to the first high-energy gamma-ray source detected at the Moon. LOX mission performance, development progress, and expectations for science investigations will be presented.

  13. NPP Grassland: Media Luna, Argentina, 1981-1983, R1

    Data.gov (United States)

    National Aeronautics and Space Administration — This data set contains two ASCII files (.txt format). One file provides monthly above-ground live biomass, dead matter, and litter data and daily above-ground net...

  14. Roads for Luna County, New Mexico, 2006se TIGER

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The 2006 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage...

  15. Lunar Phases and Earthly Events: Beliefs from Different Education Levels. (Spanish Title: Fases de la Luna y Acontecimientos Terrestres: Creencia de Distintos Niveles de Instrucción.) As Fases da Lua e os Acontecimentos Terrestres: a Crença de Diferentes Níveis de Instrução

    Science.gov (United States)

    Darroz, Luiz Marcelo; da Rosa, Cleci Teresinha Werner; Alves Vizzotto, Patrick; Becker da Rosa, Álvaro

    2013-12-01

    This article presents the result of a research carried out in the first semester of 2013 with a group of 80 subjects from different education levels. In this research, we sought to investigate the earthly events that this group of people attributes to the phenomenon of lunar phases. For data collection we used semi-structured interviews guided by questions that aimed to keep the focus on subjects of the investigation. Interviews were recorded and transcribed, and the results were compared to scientific studies in the area after being quantitatively and qualitatively analyzed. Research data showed that the Moon and the phenomenon of lunar phases still fascinate and raise the interest of people. However, the lack of knowledge to find correct explanations to the phenomena involving the moon ends up originating a series of beliefs about its influence on earthly events. En este artículo se presenta el resultado de una investigación realizada en el primer semestre de 2013 con a un grupo de 80 individuos de distintos niveles de instrucción. En esta investigación, tratamos de averiguar cuáles son los acontecimientos terrestres que este grupo de personas atribuye al fenómeno las fases lunares. Como instrumento de colecta de datos, se emplearon entrevistas semiestructuradas guiadas por preguntas que trataban de mantener la atención de los entrevistados en el objeto investigado. Las entrevistas fueron grabadas y transcriptas, y los resultados, después de ser analizados cuantitatativa y cualitativamente, fueron confrontados con estudios científicos del área. Los datos de la investigación demuestran que la Luna y de sus fases continúan fascinando y despertando el interés de la población. Sin embargo, la falta de conocimientos para encontrar explicaciones correctas relacionadas a los fenómenos que ocurren con el astro acaba originando una serie de creencias en la población sobre su influencia en los sucesos terrestres. Apresenta-se neste artigo o resultado de uma

  16. El mito prehispánico en las lunas y medias lunas de Pedro Páramo

    OpenAIRE

    Estrada Cárdenas, Alba

    2011-01-01

    This essay analyzes the myth of Cresent Moon in Pedro Páramo, and the connotations that it has related to the masculine, feminine, fertility and death. This to discover how two aspects of being Mexican are described in this novel.

  17. The Role of Stat3 Activation in Androgen Receptor Signaling and Prostate Cancer

    Science.gov (United States)

    2006-07-01

    2474–2488. 3. Catlett-Falcone R, Landowski TH, Oshiro MM, Turkson J, Levitzki A, Savino R, Ciliberto G, Moscinski L, Fernandez -Luna JL, Nunez G, DaltonWS...2002;62:6659–6666. 44. Catlett-Falcone R, Landowski TH, Oshiro MM, Turkson J, Levitzki A, Savino R, Ciliberto G, Moscinski L, Fernandez -Luna JL...Darnell, Jr. (Rockefeller University, New York) for Stat3c, Dr. Koichi Nakajima (Osaka University, Osaka) for Stat3F, Dr. Sergio Onate (Roswell Park

  18. Astronomy Teaching and Teachers Continuing Education: the Interdisciplinarity during a Total Lunar Eclipse. (Spanish Title: Enseñanza de la Astronomía y la Formación Continua de Profesores: la Interdisciplinariedad Durante un Eclipse Total de Luna.) Educação EM Astronomia E Formação Continuada de Professores: a Interdisciplinaridade Durante um Eclipse Lunar TOTAL

    Science.gov (United States)

    Langhi, Rodolfo

    2009-07-01

    This paper describes how 67 teachers from 23 cities, could awaken, in students, the scientific interest, using a natural astronomical phenomenon: a total lunar eclipse. Before and after of eclipse, meetings for continuing education were characterized by interdisciplinarity of astronomy and the importance of these observations. Working groups were formed by teachers and students, who organized the survey data, mobilizing the people in their cities. The results point ways about how to provide the scientific culture and the motivation to learn science in students, using approaches between the following communities: scientific, amateur and school. En este artículo se describe cómo 67 profesores de 23 ciudades, despertó el interés científico en los estudiantes mediante un fenómeno astronómico: un eclipse total de Luna. Antes y después del eclipse, reuniones para la formación continua se centraron en la interdisciplinariedad de la astronomía, y la importancia de las observaciones de este tipo de fenómeno. Profesores y estudiantes formaron grupos de trabajo para investigar datos durante el eclipse, con el participación de la comunidad en sus ciudades. Los resultados apuntan a las opciones que conducen a la cultura científica y la motivación para aprender la ciencia, utilizando las relaciones de los siguientes grupos: científicos, aficionados y la escuela. Este texto relata como 67 professores, provenientes de 23 cidades, puderam despertar, nos alunos, o interesse científico utilizando um fenômeno natural astronômico: um eclipse lunar total. O evento foi precedido e procedido por encontros de formação continuada, onde se caracterizou a interdisciplinaridade da astronomia e a importância das observações de fenômenos como estes. Grupos de trabalho foram formados por professores e alunos, que se organizaram para o levantamento conjunto de dados durante o fenômeno, além do envolvimento da comunidade em suas respectivas cidades. Os resultados apontam

  19. Scholarship in Student Affairs: Thinking Outside the Triangle, or Tabasco on Cantaloupe.

    Science.gov (United States)

    Sanlo, Ronni

    2002-01-01

    This article expresses a concern about whether student affairs professionals examine the language they use, as well as ponders how they learned what they know about marginalization of populations on campuses. Briefly explores eight areas within student affairs, specifically for sexual orientation and gender identity content. (Contains 12…

  20. Agronomic, economic and ecological aspects of the papaya (Carica papaya) production in Tabasco, Mexico

    NARCIS (Netherlands)

    Guzmán-Ramón, E.; Gómez-Alvarez, R.; Pat-Fernández, J.M.; Pohlan, H.A.J.; Álvarez-Rivero, J.C.; Geissen, V.

    2010-01-01

    The cultivation of papaya is important in the tropic because it provides source of income to the farmer within a short time. Statistical data were obtained from farmers located in the Chontalpa, Rios and Centro-Sierra regions; the size of the survey was 67 farmers. The study shows the results of the

  1. Qualitative Research to study the attempted suicide of Tabasco´s young people

    Directory of Open Access Journals (Sweden)

    Ángela B. Martínez G

    2009-05-01

    Full Text Available AbstractObjective: this paper intends to give an account concerning the progress of a doctoral research with regards to suicidal attempts in young people along with their meanings. Methodology: qualitative research. It presents the theories which support my work (collective health, cultural studies, and youth sociology in the search of understanding how the hegemonic medical thinking has had an influence in the production of scientific knowledge about suicide. Results: there is a need to construct an overlook which may allow discovering the meanings that death, life, and life style may have for men and women with suicidal attempts. Discussion: It concludes with the presentation of the development that has taken this research with regard to the analysis interviews that give it origin.

  2. Adoption of flood preparedness actions : A household level study in rural communities in Tabasco, Mexico

    NARCIS (Netherlands)

    Atreya, Ajita; Czajkowski, Jeffrey; Botzen, Wouter; Bustamante, Gabriela; Campbell, Karen; Collier, Ben; Ianni, Francisco; Kunreuther, Howard; Michel-Kerjan, Erwann; Montgomery, Marilyn

    2017-01-01

    Of all the natural disasters, floods are the most common. While they affect most countries around the world, poor communities are particularly vulnerable to flood risk. The use of early preparedness measures is key for minimizing related flood impacts; however, little is known about what drives

  3. Holocene evolution of the Tabasco delta – Mexico : impact of climate, volcanism and humans

    NARCIS (Netherlands)

    Nooren, C.A.M.

    2017-01-01

    This research revealed the impact of climate, volcanism and humans on the late Holocene evolution of a tropical delta in southern Mexico. Palynological, tephrochronological, limnological, geomorphological and sedimentological techniques have been applied to reconstruct the evolution of the

  4. Tratamiento de aguas residuales por humedales artificiales tropicales en Tabasco, México

    OpenAIRE

    Cristian Marín Acosta; Rudy Solís Silván; Gaspar López Ocaña; Raúl Germán Bautista Margulis; Mario José Romellón Cerino

    2016-01-01

    En las dos últimas décadas, los humedales artificiales han incrementado mundialmente su desarrollo para el tratamiento de aguas residuales. En el presente estudio, doce humedales artificiales tropicales de flujo subsuperficial (HAFS) fueron diseñados y operados específicamente para el tratamiento de aguas residuales domésticas. La eficiencia de remoción de contaminantes básicos (DBO5, DQO, SST, NT, PT, Turbiedad y Color) fue evaluada bajo tres tratamientos: 1) Pontederia cordat...

  5. A new species of Jahnulales from Las Ilusiones Lagoon, Tabasco, Mexico

    Science.gov (United States)

    During a study on biodiversity of freshwater ascomycetes from an urban tropical lagoon, an ascomycete with similar morphology to species of Jahnulales was obtained. Smooth surface test blocks of Pinus sp., Bucida sp., Cedrela sp. and Tabebuia sp. were submerged in pairs close to a private house whar...

  6. Helminth parasites of the tropical gar, Atractosteus tropicus Gill, from Tabasco, Mexico

    Czech Academy of Sciences Publication Activity Database

    Salgado-Maldonado, G.; Moravec, František; Cabanas-Carranza, G.; Aguilar-Aguilar, R.; Sánchez-Nava, P.; Báez-Valé, R.; Scholz, Tomáš

    2004-01-01

    Roč. 90, č. 2 (2004), s. 260-265 ISSN 0022-3395 Grant - others:Consejo Nacional de Ciencia y Tecnología(MX) 27668N Institutional research plan: CEZ:AV0Z6022909 Keywords : Helminths * fish parasites * communities Subject RIV: EG - Zoology Impact factor: 1.439, year: 2004

  7. Plantas útiles en la medicina tradicional de Malpasito-Huimanguillo, Tabasco, México

    National Research Council Canada - National Science Library

    Edelia Claudina Villarreal-Ibarra; Eustolia García-López; Pedro Antonio Lopez; David Jesus Palma-López; Luz del Carmen Lagunes-Espinoza; Carlos Freddy Ortiz-García; Azucena Oranday-Cárdenas

    2015-01-01

    En México las plantas medicinales son el recurso terapéutico por excelencia en la medicina tradicional, es rescatable en gran medida por constituir un importante elemento al combinar el conocimiento popular...

  8. Germinacion y supervivencia de seis especies nativas de un bosque tropical de Tabasco, Mexico

    National Research Council Canada - National Science Library

    Perez-Hernandez, Isidro; Ochoa-Gaona, Susana; Vargas-Simon, Georgina; Mendoza-Carranza Manuel; Gonzalez-Valdivia Noel Antonio

    2011-01-01

    .... El experimento se replico en condiciones de vivero bajo sombra de 40, 60 y 80%. Los tipos de cobertura vegetal no mostraron diferencias significativas en las tasas de germinacion y de crecimiento...

  9. Get Active

    Science.gov (United States)

    ... try getting active more often. What kinds of activity should I do? To get all the health ... Health Benefits What are the benefits of physical activity? Physical activity increases your chances of living longer. ...

  10. Thickness and photocatalytic activity relation in TiO2: N films grown ...

    Indian Academy of Sciences (India)

    Author Affiliations. M M M CONTRERAS TURRUBIARTES1 E LÓPEZ LUNA1 J L ENRIQUEZ-CARREJO2 A PEDROZA RODRIGUEZ3 J C SALCEDO REYES3 M A VIDAL BORBOLLA1 P G MANI-GONZALEZ2. Coordinacion para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis ...

  11. 2000 Census Urban Areas for Luna County, New Mexico, 2006se TIGER

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The 2006 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage...

  12. LUNA: Hard Real-Time, Multi-Threaded, CSP-Capable Execution Framework

    NARCIS (Netherlands)

    Bezemer, M.M.; Wilterdink, R.J.W.; Welch, Peter H.; Sampson, Adam T.; Pedersen, Jan B.; Kerridge, Jon M.; Broenink, Johannes F.; Barnes, Frederick R.M.

    Modern embedded systems have multiple cores available. The CTC++ library is not able to make use of these cores, so a new framework is required to control the robotic setups in our lab. This paper first looks into the available frameworks and compares them to the requirements for controlling the

  13. Current Federal Congressional Districts for Luna County, New Mexico, 2006se TIGER

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The 2006 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage...

  14. ICON - Media Luna Reef 2011 Meteorological and Oceanographic Observations (NODC Accession 0098078)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Atlantic Oceanographic and Meteorological Laboratory (AOML) of OAR is conducting research on the influence of meteorological and oceanographic factors upon coral...

  15. ICON - Media Luna Reef 2013 Meteorological and Oceanographic Observations (NODC Accession 0124000)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Atlantic Oceanographic and Meteorological Laboratory (AOML) of OAR is conducting research on the influence of meteorological and oceanographic factors upon coral...

  16. ICON - Media Luna Reef 2008 Meteorological and Oceanographic Observations (NODC Accession 0039700)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Atlantic Oceanographic and Meteorological Laboratory (AOML) of OAR is conducting research on the influence of meteorological and oceanographic factors upon coral...

  17. Luna-Glob project in the context of the past and present lunar ...

    Indian Academy of Sciences (India)

    as a result of collision of Earth with a large (Mars size) body. Some geochemical characteristics of the. Moon are difficult to reconcile with its origin from the Earth's mantle as proposed in the Giant Impact. Hypothesis (Galimov 2004). There are several geochemical criteria, which allow us to resolve between the various ...

  18. Os estágios curriculares e extracurriculares do Grupo Luna Hotels & Resorts

    OpenAIRE

    Luz, Alexandra Isabel Ricardo da Silva

    2017-01-01

    Dissertação de mestrado, Gestão de Recursos Humanos, Escola Superior de Gestão, Hotelaria e Turismo, Universidade do Algarve, 2017 A sociedade contemporânea exige de cada um de nós cada vez mais destreza e capacidade de adaptação às situações com que nos deparamos no quotidiano. Nas empresas e na sua gestão de recursos humanos torna-se, também, imprescindível conseguir dar respostas inovadoras e diferenciadas que se adaptem à evolução e desenvolvimento da economia e à mudança rápida do mer...

  19. ICON - Media Luna Reef 2006 Meteorological and Oceanographic Observations (NODC Accession 0049876)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Atlantic Oceanographic and Meteorological Laboratory (AOML) of OAR is conducting research on the influence of meteorological and oceanographic factors upon coral...

  20. ICON - Media Luna Reef 2007 Meteorological and Oceanographic Observations (NODC Accession 0049877)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Atlantic Oceanographic and Meteorological Laboratory (AOML) of OAR is conducting research on the influence of meteorological and oceanographic factors upon coral...

  1. ICON - Media Luna Reef 2012 Meteorological and Oceanographic Observations (NODC Accession 0117729)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Atlantic Oceanographic and Meteorological Laboratory (AOML) of OAR is conducting research on the influence of meteorological and oceanographic factors upon coral...

  2. Current 5-Digit ZIP Code Tabulation Areas (ZCTAs) for Luna County, New Mexico, 2006se TIGER

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The 2006 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage...

  3. Current Census Blocks for Luna County, New Mexico, 2006se TIGER

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The 2006 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage...

  4. Customized electro-optical sensors for the German Armed Forces UAV programs (LUNA and BREVEL)

    Science.gov (United States)

    Duchateau, Ruediger

    2000-12-01

    The use of Unmanned Airborne Vehicles (UAVs) for different applications in surveillance and reconnaissance requires customized imaging systems fitting in size and weight into the UAVs and providing the adequate electro-optical performance in terms of field of view (FOV), field of regard (FOR) and geometrical resolution resulting in the achievable mission performance. ATTICA P256D is a very compact, extremely lightweight digital thermal camera operating in the 3-5micrometers waveband featuring an uncompromising design for low weight. Image generation is performed by a platinum-silicide (PtSi) focal plane array (FPA) detector with 256 x 256 elements, developed and produced by AIM with an integrated minicooler. Total weight of the whole IR camera is 1.7 kg. The thermal camera OPHELIOS in BREVEL configuration contains a wide-range zoom objective with a magnification change factor of 8 for large field of regard and high identification performance. The thermal imager is integrated into an internal structure which itself is mounted into a frame in a way that allows rotation of the whole camera by n x 360 degree(s) for compensation of both roll movement of the UAV and image derotation. This configuration offers the best volume/performance ratio available in this performance class.

  5. Luna B. Leopold--pioneer setting the stage for modern hydrology

    Science.gov (United States)

    Hunt, Randall J.; Meine, Curt

    2012-01-01

    In 1986, during the first year of graduate school, the lead author was sampling the water from a pitcher pump in front of “The Shack,” the setting of the opening essays in Aldo Leopold's renowned book A Sand County Almanac. The sampling was part of my Master's work that included quarterly monitoring of water quality on the Leopold Memorial Reserve (LMR) near Baraboo, Wisconsin. The Shack was already a well-known landmark, and it was common to come upon visitors and hikers there. As such, I took no special note of the man who approached me as I was filling sample bottles and asked, as was typical, “What are you doing?”

  6. Current Unified School Districts for Luna County, New Mexico, 2006se TIGER

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The 2006 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage...

  7. Lunar Samples: Apollo Collection Tools, Curation Handling, Surveyor III and Soviet Luna Samples

    Science.gov (United States)

    Allton, J.H.

    2009-01-01

    The 6 Apollo missions that landed on the lunar surface returned 2196 samples comprised of 382 kg. The 58 samples weighing 21.5 kg collected on Apollo 11 expanded to 741 samples weighing 110.5 kg by the time of Apollo 17. The main goal on Apollo 11 was to obtain some material and return it safely to Earth. As we gained experience, the sampling tools and a more specific sampling strategy evolved. A summary of the sample types returned is shown in Table 1. By year 1989, some statistics on allocation by sample type were compiled [2]. The "scientific interest index" is based on the assumption that the more allocations per gram of sample, the higher the scientific interest. It is basically a reflection of the amount of diversity within a given sample type. Samples were also set aside for biohazard testing. The samples set aside and used for biohazard testing were represen-tative, as opposed to diverse. They tended to be larger and be comprised of less scientifically valuable mate-rial, such as dust and debris in the bottom of sample containers.

  8. Pedro de Luna y el Estudio Salmantino. Aspecto Institucional: su Constitución

    Directory of Open Access Journals (Sweden)

    Pilar VALERO GARCÍA

    2009-12-01

    Full Text Available En un claustro de Diputados del 24 de Septiembre de 1624, presidido por el Vicerrector D. Diego de Ángulo, en ausencia de D. Enrique de Guzmán, rector entonces de la Universidad, se tomaba el acuerdo de nombrar una comisión, cuyo cometido consistía en el estudio y recogida, para darlos a la luz, de toda la serie de estatutos por los que venía gobernándose el Estudio salmantino. De esta recopilación se hicieron cargo el P. Maestro Fr. Antonio de Ledesma y el Señor Doctor Martín López de Hontiveros. Un mes más tarde, aproximadamente, la tarea se daba por concluida y los comisarios la presentaban al claustro, que decidió, de inmediato, proceder a su publicación, encargando de ello a los mismos recopiladores; la impresión definitiva data de Junio de 1625 y está precedida de una introducción, que viene a ser una síntesis de la historia del Estudio desde el punto de vista de las disposiciones y reglamentos.

  9. La "media luna" sobre Bolivia: nación, región y clase social

    Directory of Open Access Journals (Sweden)

    Willem ASSIES

    2009-11-01

    Full Text Available RESUMEN: Durante los últimos años, se ha visto una serie de convulsiones sociales en Bolivia. Un aspecto de estas dificultades fue la aparición de discursos nacionalistas y regionalistas, los cuales dividían la parte oriental de la parte occidental del país, y al revés. Dichos discursos se han caracterizado por sus fuertes matices étnicos y acentuaban por un lado la identidad camba y por otro la identidad colla. No obstante, tales discursos tienen raíces muy distintas y reflejan proyectos y relaciones de clase muy diferentes. Partiendo de la metáfora de la «nevera al revés» (la nevera que genera calor hacia dentro y frío hacia afuera, este artículo busca elucidar la interrelación entre la política nacionalista/regionalista, la etnia y la clase social en la Bolivia contemporánea.ABSTRACT: Over the past years Bolivia has seen a series of «social convulsions». One aspect of these upheavals was the emergence of nationalist and regionalist discourses pitting the orient against the occident of the country, and vice versa. Such discourses were marked by strong ethnic overtones, accentuating either camba or colla identities. Nevertheless, such identity discourses have very different roots and reflect very different projects and class relations. Taking a lead from the «inverted fridge» metaphor –the fridge that generates warmth towards the «inside(r» and cold towards the «outside(r»– this paper seeks to elucidate the interrelation between the politics of nationalism/regionalism, ethnicity and class in contemporary Bolivia.

  10. 77 FR 4829 - Emilio Luna, M.D.; Decision and Order

    Science.gov (United States)

    2012-01-31

    ... arrested by the Federal Bureau of Investigation and charged with distributing child pornography in..., the Federal Bureau of Investigation arrested and charged Registrant with distributing child pornography in interstate commerce. Id. The Order further alleged that on September 3, 2010, the Arizona...

  11. Discontinuities in the shallow Martian crust at Lunae, Syria, and Sinai Plana

    Science.gov (United States)

    Davis, P.A.; Golombek, M.P.

    1990-01-01

    Detailed photoclinometric profiles across 125 erosional features and 141 grabens in the western equatorial region of Mars indicate the presence of three discontinuities within the shallow crust, at depths of 0.3, 0.6 km, 1 km, and 2-3 km. The shallowest discontinuity corresponds to thickness estimates for the ridged plains unit in this region, and thus the discontinuity probably is the contact between a sequence of layered rock making up this unit and the underlying megaregolith. The 1-km discontinuity is reflected in the base levels of erosion of all the features studied, and it may correspond to the base of the proposed layer of ground ice. Model calculations show that graben-bounding faults consistently intersect at the mechanical discontinuity at about 1 km depth. This discontinuity may represent an interface between ice-laden and dry regolith, ice-laden and water-laden regolith, or pristine and cemented regolith. A correlation between wall valley head depth and local thickness of the faulted layer suggests that the 1-km discontinuity also controlled the depth of the heads of sapping canyons. The third discontinuity, at a depth of 2-3 km, corresponds to the proposed base of the Martian megaregolith and is probably the interface between overlying, ejected breccia and in situ, fractured basement rocks. -from Authors

  12. Miscellaneous Ground Transportation (Utilities) for Luna County, New Mexico, 2006se TIGER

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The 2006 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage...

  13. "La inteligencia emocional como factor estratégico en el Hospital de Salud Mental de Villahermosa Tabasco"

    OpenAIRE

    Madrigal Villanueva, Rubí

    2011-01-01

    Desde los modelos de Inteligencia Emocional se hace énfasisi en las habilidades interpersonales. Las personas emocionalmente inteligentes no sólo serán más hábiles para percibir, comprender y manejar sus propias emociones, sino también serán más capaces de extrapolar sus habilidades de percepción, comprensión y manejo a las emociones de los demás. Esta teoría proporciona un nuevo marco para investigar la adaptación social y emocional puesto que la Inteligencia Emocional jugaría un papel elem...

  14. Economic evaluation of climate risk adaptation strategies: Cost-benefit analysis of flood protection in Tabasco, Mexico

    NARCIS (Netherlands)

    Haer, T.; Botzen, W.J.W.; Zavala-Hidalgo, Jorge; Cusell, Carline; Ward, P.J.

    2017-01-01

    Economic losses as a result of natural hazards have been rising over the past few decades due to socio-economic development and perhaps climate change. This upwards trend is projected to continue, highlighting the need for adequate adaptation strategies. This raises the question of how to determine

  15. Ictiofauna de los humedales del río San Pedro, Balancán, Tabasco, México

    Directory of Open Access Journals (Sweden)

    Alfonso Castillo-Domínguez

    2011-06-01

    Full Text Available Los humedales de San Pedro sostienen redes tróficas del sistema fluvial debido a la alta disponibilidad de hábitats y a sus variaciones espacio-temporales. En esta investigación se estudió la composición, densidad y biomasa de la ictiofauna de los humedales; se capturaron 1 049 organismos de 25 especies, dos son exóticas: Oreochromis niloticus y Parachromis managuense. Con 23 especies capturadas en el sitio I, 17 en el II y 14 en el III. En la época de secas se obtuvo mayor riqueza con 21 especies, lluvias con 17 y cinco en nortes. La mayor densidad se mostró en el sitio II (0.23ind./m², seguido de los sitios I y III (0.12, 0.12ind./m². La mayor biomasa fue en secas (8.30g/m², seguida de lluvias (2.1g/m² y por último nortes (0.01g/m². La mayor densidad se mostró en secas (0.43ind./m² y la mínima en nortes (0.023ind./m². Las especies dominantes en densidad según el diagrama Olmstead-Tukey fueron: Petenia splendida, Vieja heterospila, Vieja synspila, Dorosoma petenense y Astyanax aeneus. Por lo tanto, existieron diferencias significativas en los parámetros ecológicos y ambientales. Al considerar la variación en la riqueza podemos concluir que los humedales del río San Pedro, es un sistema donde la composición de la ictiofauna responde a las fluctuaciones espaciales y temporales.

  16. El contexto de vulnerabilidad de familias productoras de hule (heveacultoras: estudios de caso en el municipio de Huimanguillo, Tabasco

    Directory of Open Access Journals (Sweden)

    Janeth Aguilar Román

    2012-01-01

    vulnerabilidad depende de la interacción y recurrencia de diversos factores, tales como escasos recursos financieros, un mal manejo de las plantaciones de hule, reducción de la mano de obra por enfermedad o fallecimiento, ciclos de producción con estaciones secas más prolongadas y precipitaciones abundantes que incrementan el riesgo de enfermedades en los cultivos y el ganado. Los mencionados son los factores que inciden negativamente en el capital natural, físico y financiero del que disponen las familias.

  17. Vulnerabilidad social de la población desplazada ambiental por las inundaciones de 2007 en Tabasco (México

    Directory of Open Access Journals (Sweden)

    Guadalupe del Carmen Álvarez Gordillo

    2016-01-01

    Full Text Available En este artículo se analizan los desplazamientos ambientales de la población tabasqueña durante el desastre por inundación del 2007, así como los factores de vulnerabilidad social relacionados. Se realizó una encuesta poblacional para conocer las características demográficas, sociales y culturales vinculadas a los desplazamientos posteriores a la inundación, así como los retornos y la intención de migración definitiva. Se encontró un alto retorno con apego al patrimonio económico y cultural, la reanudación de la vida cotidiana y la no intención de movilización hacia una migración definitiva. A partir de estos resultados, se sugiere la implementación a futuro de ajustes para la atención de la población desplazada por las inundaciones.

  18. Evaluación de riesgos a inundaciones en la Cuenca Cárdenas-Comalcalco, Tabasco, México.

    OpenAIRE

    González Mancillas, Rigoberto

    2011-01-01

    La presente investigación se realizó en la Cuenca Cárdenas-Comalcalco. Esta Cuenca tiene una extensión de 274,255.32 ha, que incluye los municipios de casi todo Cárdenas, parte de Huimanguillo, Paraíso y Comalcalco, y constantemente es afectada por inundaciones. Así que, el propósito de la presente investigación consistió en conocer la percepción de la vulnerabilidad en zonas con riesgos a inundaciones realizando la evaluación de las zonas con riesgos a inundaciones con precipitaciones extrem...

  19. Activated Charcoal

    Science.gov (United States)

    Activated Carbon, Animal Charcoal, Carbo Vegetabilis, Carbon, Carbón Activado, Charbon Actif, Charbon Activé, Charbon Animal, Charbon Médicinal, Charbon Végétal, Charbon Végétal Activé, Charcoal, Gas Black, Lamp Black, Medicinal Charcoal, Noir de Gaz, ...

  20. Physical Activity

    DEFF Research Database (Denmark)

    Andersen, Lars Bo; Anderssen, Sigmund Alfred; Wisløff, Ulrik

    2014-01-01

    Andersen LB, Anderssen SA, Wisløff U, Hellénius M-L, Fogelholm M, Ekelund U. (Expert Group) Nordic Nutrition Recommendations 2012. Integrating nutrition and physical activity. Chapter: Physical Activity p. 195-217.Nordic Counsil of Ministers.......Andersen LB, Anderssen SA, Wisløff U, Hellénius M-L, Fogelholm M, Ekelund U. (Expert Group) Nordic Nutrition Recommendations 2012. Integrating nutrition and physical activity. Chapter: Physical Activity p. 195-217.Nordic Counsil of Ministers....

  1. Astronomy Activities.

    Science.gov (United States)

    Greenstone, Sid

    This document consists of activities and references for teaching astronomy. The activities (which include objectives, list of materials needed, and procedures) focus on: observing the Big Dipper and locating the North Star; examining the Big Dipper's stars; making and using an astrolabe; examining retograde motion of Mars; measuring the Sun's…

  2. Active matter

    Science.gov (United States)

    Ramaswamy, Sriram

    2017-05-01

    The study of systems with sustained energy uptake and dissipation at the scale of the constituent particles is an area of central interest in nonequilibrium statistical physics. Identifying such systems as a distinct category—Active matter—unifies our understanding of autonomous collective movement in the living world and in some surprising inanimate imitations. In this article I present the active matter framework, briefly recall some early work, review our recent results on single-particle and collective behaviour, including experiments on active granular monolayers, and discuss new directions for the future.

  3. ACTIVITY STUDIES

    African Journals Online (AJOL)

    2-HYDROXY-4-METHOXYBENZALDEHYDE: LARVICIDAL STRUCTURE-. ACTIVITY STUDIES. Geoffrey M. Mahangal, Teresa O. Akengal, Wilber Lwandez, Isaiah 0. ... 2Behavioural and Chemical Ecology Department, International Centre for Insect Physiology and .... Y = mean death count, X = initial larvae population'.

  4. Active Galaxies

    DEFF Research Database (Denmark)

    Kilerci Eser, Ece

    one is related to the mass estimates of supermassive black holes (SMBHs). Mass estimates of SMBHs are important to understand the formation and evolution of SMBHs and their host galaxies. Black hole masses in Type 1 AGN are measured with the reverberation mapping (RM) technique. Reverberation mapping......Galaxy formation and evolution is one of the main research themes of modern astronomy. Active galaxies such as Active Galactic Nuclei (AGN) and Ultraluminous Infrared Galaxies (ULIRGs) are important evolutionary stages of galaxies. The ULIRG stage is mostly associated with galaxy mergers...... and interactions. During the interactions of gas-rich galaxies, the gas inflows towards the centers of the galaxies and can trigger both star formation and AGN activity. The ULIRG stage includes rapid star formation activity and fast black hole growth that is enshrouded by dust. Once the AGN emission...

  5. Highly sensitive LC-MS/MS methods for the determination of seven human CYP450 activities using small oral doses of probe-drugs in human.

    Science.gov (United States)

    Grangeon, Alexia; Gravel, Sophie; Gaudette, Fleur; Turgeon, Jacques; Michaud, Veronique

    2017-01-01

    Cocktails composed of several Cytochrome P450 (CYP450)-selective probe drugs have been shown of value to characterize in vivo drug-metabolism activities. Our objective was to develop and validate highly sensitive and selective LC-MS/MS assays allowing the determination of seven major human CYP450 isoenzyme activities following administration of low oral doses of a modified CYP450 probe-drug cocktail in patients. The seven-drug cocktail was composed of caffeine, bupropion, tolbutamide, omeprazole, dextromethorphan, midazolam (all administered concomitantly) and chlorzoxazone (administered separately) to phenotype for CYP1A2, 2B6, 2C9, 2C19, 2D6, 3A4/5 and 2E1, respectively. Serial plasma and urine samples were collected over an 8h period. The probe-drugs and their respective metabolites were measured in both human plasma and urine, except for omeprazole (plasma only) and chlorzoxazone (urine only). Samples were analyzed by high performance liquid chromatography with heated electrospray ionization tandem mass spectrometry (HPLC-HESI-MS/MS) using a Phenomenex Luna PFP (2) analytical column (3μm PFP(2) 150×3mm) for chromatographic separation. Optimal detection was achieved based on 3 different analytical methods; (1) isocratic elution with a mobile phase consisting of acetonitrile and water both fortified with 0.01% formic acid for the analysis of bupropion, tolbutamide, chlorzoxazone and their respective metabolites; (2) isocratic elution with a mobile phase composed of acetonitrile and ammonium formate (pH 3; 10mM) for omeprazole, dextromethorphan, midazolam and their metabolites; (3) for caffeine and paraxanthine, gradient elution using acetonitrile and 0.01% formic acid in water was used. All calibration functions were linear for all probe drugs and metabolites in both matrices over wide analytical ranges. The main advantages of our methods are the use of specific probe drugs available in most countries, the administration of small doses of probe drugs, small

  6. Intangible activities

    DEFF Research Database (Denmark)

    Hermansen, Jonathan

    2016-01-01

    ‘Informal helping’ is often associated with other types of prosocial behaviour such as formal voluntary work. Therefore, one could jump to the conclusion that it would be the same factors driving both types of activities. This article demonstrates that this is not the case. The study relies...

  7. Physical activity

    Science.gov (United States)

    ... not exercised or been active in a long time, start slowly to prevent injuries. Taking a brisk 10-minute walk twice a week is a good start. Try joining a dance, yoga, or karate class if it appeals to you. You could also ...

  8. Active particles

    CERN Document Server

    Degond, Pierre; Tadmor, Eitan

    2017-01-01

    This volume collects ten surveys on the modeling, simulation, and applications of active particles using methods ranging from mathematical kinetic theory to nonequilibrium statistical mechanics. The contributing authors are leading experts working in this challenging field, and each of their chapters provides a review of the most recent results in their areas and looks ahead to future research directions. The approaches to studying active matter are presented here from many different perspectives, such as individual-based models, evolutionary games, Brownian motion, and continuum theories, as well as various combinations of these. Applications covered include biological network formation and network theory; opinion formation and social systems; control theory of sparse systems; theory and applications of mean field games; population learning; dynamics of flocking systems; vehicular traffic flow; and stochastic particles and mean field approximation. Mathematicians and other members of the scientific commu...

  9. Analgesic Activity.

    Science.gov (United States)

    2016-01-01

    Analgesics are agents which selectively relieve pain by acting in the CNS and peripheral pain mediators without changing consciousness. Analgesics may be narcotic or non-narcotic. The study of pain in animals raises ethical, philosophical, and technical problems. Both peripheral and central pain models are included to make the test more evident for the analgesic property of the plant. This chapter highlights methods such as hot plate and formalin and acetic acid-induced pain models to check the analgesic activity of medicinal plants.

  10. Active house

    DEFF Research Database (Denmark)

    Eriksen, Kurt Emil; Olesen, Gitte Gylling Hammershøj

    2010-01-01

    Formålet med dette abstrakt er at illustrere, at huse kan være konstrueret til at basere sig udelukkende på vedvarende energikilder og samtidig være CO2-neutrale og producere mere energi end de forbruger. Active House Visionen undersøger disse muligheder i otte demonstration huse i fem forskellige...... europæiske lande, hvor husene konstrueres, fremstilles og testes. Kvalitative og kvantitative målinger vil blive designet til at vurdere husene i forhold til energi, indeklima og miljø....

  11. Active packaging with antifungal activities.

    Science.gov (United States)

    Nguyen Van Long, N; Joly, Catherine; Dantigny, Philippe

    2016-03-02

    There have been many reviews concerned with antimicrobial food packaging, and with the use of antifungal compounds, but none provided an exhaustive picture of the applications of active packaging to control fungal spoilage. Very recently, many studies have been done in these fields, therefore it is timely to review this topic. This article examines the effects of essential oils, preservatives, natural products, chemical fungicides, nanoparticles coated to different films, and chitosan in vitro on the growth of moulds, but also in vivo on the mould free shelf-life of bread, cheese, and fresh fruits and vegetables. A short section is also dedicated to yeasts. All the applications are described from a microbiological point of view, and these were sorted depending on the name of the species. Methods and results obtained are discussed. Essential oils and preservatives were ranked by increased efficacy on mould growth. For all the tested molecules, Penicillium species were shown more sensitive than Aspergillus species. However, comparison between the results was difficult because it appeared that the efficiency of active packaging depended greatly on the environmental factors of food such as water activity, pH, temperature, NaCl concentration, the nature, the size, and the mode of application of the films, in addition to the fact that the amount of released antifungal compounds was not constant with time. Copyright © 2016 Elsevier B.V. All rights reserved.

  12. Staying Active: Physical Activity and Exercise

    Science.gov (United States)

    ... Events Advocacy For Patients About ACOG Staying Active: Physical Activity and Exercise Home For Patients Search FAQs Staying ... Exercise FAQ045, November 2016 PDF Format Staying Active: Physical Activity and Exercise Women's Health What are the benefits ...

  13. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Needs for Pregnant or Postpartum Women Physical Activity & Health Adding Physical Activity to Your Life Activities for Children Activities ... Physical Activity, 2014 Recommendations & Guidelines Fact Sheets & Infographics Social ... Physical Activity Steps to Wellness Walkability Audit Tool Sample ...

  14. Activating schoolyards

    DEFF Research Database (Denmark)

    Andersen, Henriette Bondo; Pawlowski, Charlotte Skau; Scheller, Hanne Bebendorf

    2015-01-01

    and structural changes in the physical environment. METHOD: The study builds on a quasi-experimental study design using a mixed method approach including: 1) an exploratory study aimed at providing input for the developing process; 2) an evaluation of the effect of the interventions using a combination...... as well as quantitative methods can be seen as a strength, as the different types of data complement each other and results of one part of the study informed the following parts. A unique aspect of our study is the use of accelerometers in combination with GPS and GIS in the effect evaluation...... to objectively determine where and how active the students are in the schoolyard, before and after the intervention. This provides a type of data that, to our knowledge, has not been used before in schoolyard interventions. Exploring the change in behavior in relation to specific intervention elements...

  15. Halal Activism

    DEFF Research Database (Denmark)

    Fischer, Johan

    2016-01-01

    The purpose of this article is to further our understanding of contemporary Muslim consumer activism in Malaysia with a particular focus on halal (in Arabic, literally “permissible” or “lawful”) products and services. Muslim activists and organisations promote halal on a big scale in the interface...... zones between new forms of Islamic revivalism, the ethnicised state and Muslim consumer culture. Organisations such as the Muslim Consumers Association of Malaysia play an important role in pushing and protecting halal in Malaysia, that is, halal activists constantly call on the state to tighten halal...... in particular historical/national settings and that these issues should be explored in the interfaces between Islam, the state and market. More specifically, this article examines the above issues building on ethnography from fieldwork with three Muslim organisations in Malaysia....

  16. Active sharing

    CERN Multimedia

    2012-01-01

    The big news this week is, of course, the conclusions from the LHC performance workshop held in Chamonix from 6 to 10 February . The main recommendation, endorsed by CERN’s Machine Advisory Committee and adopted by the Management, is that the LHC will run at 4 TeV per beam this year. You can find all the details from Chamonix in the slides presented on Wednesday at the summary session, which leaves me free to talk about another important development coming up soon.   In ten days time, a new kind of gathering will be taking place in Geneva, bringing together two previously separate conferences, one driven by physics, the other by the medical community, but both looking to apply physics to the advancement of health. The merger of the International Conference for Translational Research in Radio-Oncology and CERN’s workshop on Physics for Health in Europe (ICTR-PHE) makes for a very eclectic mix. Presentations range from active shielding for interplanetary flight to the rather...

  17. DAVIC activities

    Science.gov (United States)

    Fujiwara, Hiroshi

    1995-12-01

    DAVIC (Digital Audio Visual Council) is the defacto standardization organization established in Mar. 1994, based on international consensus for digital audio visual services. After completion of MPEG2 standardization, the broadcasting industry, the communication industry, the computer industry, and consumer electronics industry have started development of concrete services and products. Especially the interactive digital audio visual services, such as Video On Demand (VOD) or Near Video On Demand (NVOD), have become hot topics all over the world. Such interactive digital audio visual services are combined technologies of multi-media coding, digital transmission and computer networking. Therefore more than 150 organizations from all industry sectors have participated in DAVIC and are contributing from their own industrial contexts. DAVIC's basic policy is to use the available technologies specified by the other standards bodies as much as possible. So DAVIC's standardization activities have close relationship with ISO IEC/JTC1/SC29, ITU-T SG 9, ATM-Forum, IETF, IMA, DVB, etc. DAVIC is trying to specify Applications, Reference Models, Security, Usage Information Control, and the interfaces and protocols among the Content Provider, the Server, the core network, the access network, and the Set Top Unit. DAVIC's first goal is to specify DAVIC1.0 based on CFP1 (Call for Proposal) and CFP2 by Dec. 1995, and the next direction is under preparation for further progress based on CFP3 and CFP4.

  18. The Practice of Research of a Basic Education Teacher Involving Mental Models of the Phases of the Moon and Eclipses. (Spanish Title: La Práctica de Investigación de un Maestro de Educación BÁsica con El Uso de los Modelos Mentales de Las Fases de la Luna Y Eclipses.) A Prática de Pesquisa de um Professor do Ensino Fundamental Envolvendo Modelos Mentais de Fases da Lua e Eclipses

    Science.gov (United States)

    Pessôa Queiroz, Glória; Jubitipan Borges de Sousa, Carlos; Auxiliadora Delgado Machado, Maria

    2009-12-01

    The inclusion of basic education teachers in the survey domain is a controversial issue and fully debated in the academy. The opportunity for a collective work that incorporated school teachers from a public school to a university's group of physics teaching at university allowed us to glimpse the redefinition of the function of a science teacher (a coauthor of this paper) by himself, such that now he includes research on the knowledge construction by students in his teacher practice. The formation of inter-institutional groups for action planning and research in these areas has proved productive for the task of knowledge construction to support educational processes in school, while the university enriches its collection of experiences critically validated, and can consider the results in teachers initial and continued education. The active participation of the teacher in a research group at the university led him to reflect on the possible didactical ways to be described, analyzed and communicated to other teachers. The construction of a pedagogy that took into account the mental models of students on the basic topics of astronomy, and the changes developed resulting from the lessons taught, led to far-reaching consequences on the pedagogy adopted by the teacher, who incorporates now a new vision of science and alternative forms to dialogue with students, essential components for a researcher in Science Education. La inclusión de los maestros de la escuela básica en el universo de la investigación es polémica y está en amplio debate en el mundo académico. La oportunidad de trabajo colectivo de los maestros de una escuela pública en Río de Janeiro con un grupo universitario de enseñanza de la física nos ha permitido vislumbrar la redefinición de la función de un maestro de ciencias (uno de los coautores de este documento) por él mismo, ahora para incluir la investigación sobre la construcción del conocimiento por los alumnos en su práctica como

  19. Activation Energy

    Science.gov (United States)

    Gadeken, Owen

    2002-01-01

    Teaming is so common in today's project management environment that most of us assume it comes naturally. We further assume that when presented with meaningful and challenging work, project teams will naturally engage in productive activity to complete their tasks. This assumption is expressed in the simple (but false) equation: Team + Work = Teamwork. Although this equation appears simple and straightforward, it is far from true for most project organizations whose reality is a complex web of institutional norms based on individual achievement and rewards. This is illustrated by the very first successful team experience from my early Air Force career. As a young lieutenant, I was sent to Squadron Officer School, which was the first in the series of Air Force professional military education courses I was required to complete during my career. We were immediately formed into teams of twelve officers. Much of the course featured competition between these teams. As the most junior member of my team, I quickly observed the tremendous pressure to show individual leadership capability. At one point early in the course, almost everyone in our group was vying to become the team leader. This conflict was so intense that it caused us to fail miserably in our first outdoor team building exercise. We spent so much time fighting over leadership that we were unable to complete any of the events on the outdoor obstacle course. This complete lack of success was so disheartening to me that I gave our team little hope for future success. What followed was a very intense period of bickering, conflict, and even shouting matches as our dysfunctional team tried to cope with our early failures and find some way to succeed. British physician and researcher Wilfred Bion (Experiences in Groups, 1961) discovered that there are powerful psychological forces inherent in all groups that divert from accomplishing their primary tasks. To overcome these restraining forces and use the potential

  20. Browse Author Index

    African Journals Online (AJOL)

    Luna, Claudia · Luna, H · Luna, LN · Luna-González, Antonio · Luna-Olvera, HA · Lund, OS · Lundberg, D · Lung, M-Y · Lung, MY · Luo, A · Luo, Baihua · Luo, BY 17301 - 17350 of 33376 Items >>. ISSN: 1684-5315. AJOL African Journals Online. HOW TO USE AJOL.

  1. Condiciones de fase y continuación analítica de órbitas periódicas de transferencia rápida de RTBP Tierra-Luna al problema cuasi-circular Sol-Tierra-Luna

    Science.gov (United States)

    Leiva, A. M.; Briozzo, C. M.

    We present a first order necessary condition for the value of the initial Solar phase, allowing the analytic continuation of periodic orbits from the Earth-Moon Restricted Three Body Problem (RTBP) to the Sun-Earth-Moon Quasi-Bicircular Problem (QBCP). We apply this condition to several fast Earth-Moon transfer orbits, detailing the final orbits obtained for the QBCP.

  2. The Stratigraphy of the Cambrian Lancara Formation between the Luna River and the Esla River in the Cantabrian Mountains, Spain

    NARCIS (Netherlands)

    Meer Mohr, van der C.G.

    1969-01-01

    The Lancara Formation is a unit of carbonate sediments of Lower to Middle Cambrian age in the Cantabrian Mountains of northern Spain. The formation is divisible into a Dolomite Member, a Limestone Member and a Griotte Member. The Dolomite Member and the Limestone Member consist mainly of very

  3. Sistema Solar: de la observación de La Tierra a los planetas gigantes y sus lunas

    Science.gov (United States)

    Rodrigo, R.

    La fotoquímica tiene un papel principal en la composición de las atmósferas planetarias. Se examinan diferentes procesos fotoquímicos tanto para atmósferas oxidadas como reductoras, poniendo un especial énfasis en los ciclos químicos más importantes. En este sentido, se presentan diferentes ciclos químicos capaces de producir hidrocarbonos y nitrilos en atmósferas reductoras, así como aquellos capaces de mantener las proporciones de mezcla de las moléculas que contienen oxígeno, tales como CO2, O2 y H2O. También se analizan otros procesos importantes tales como la condensación y procesos de sputtering y de sublimación que han de tenerse en cuenta cuando se realizan modelos sobre la composición atmosférica.

  4. Pressurized groundwater systems in Lunae and Ophir Plana (Mars) : Insights from small-scale morphology and experiments

    NARCIS (Netherlands)

    Marra, Wouter A.; Hauber, Ernst; de Jong, Steven M.; Kleinhans, Maarten G.

    2015-01-01

    Outflow channels on Mars reveal the past presence of water, possibly released from pressurized groundwater reservoirs. We aim to improve our understanding of such outflow systems in order to better constrain past hydrological conditions on Mars. We investigate the morphology of possible pressurized

  5. Over enkele teekininge, die eens Dodonaeus toebehoord hebben, waarbij de eerste Koningsvisch (Lampris luna) van de Europeesche Kusten

    NARCIS (Netherlands)

    Engel, H.

    1945-01-01

    Professor I. Q. van Regteren Altena was zoo vriendelijk mij een aantal teekeningen ter beschikking te stellen, die eens aan het huis Plantijn moeten toebehoord hebben. Immers, sommige daarvan hebben gediend als voorbeeld voor houtsneden in den Herbarius von Dodonaeus van 1618, gedrukt „t'Antwerpen

  6. 2000 Census 5-Digit ZIP Code Tabulation Areas (ZCTAs) for Luna County, New Mexico, 2006se TIGER

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The 2006 Second Edition TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER database. The geographic coverage...

  7. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Physical Activity Basics Needs for Adults Needs for Children What Counts Needs for Older Adults Needs for ... Adding Physical Activity to Your Life Activities for Children Activities for Older Adults Overcoming Barriers Measuring Physical ...

  8. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Adults Needs for Children What Counts Needs for Older Adults Needs for Pregnant or Postpartum Women Physical Activity & ... to Your Life Activities for Children Activities for Older Adults Overcoming Barriers Measuring Physical Activity Intensity Target Heart ...

  9. Types of Physical Activity

    Science.gov (United States)

    ... basics Types of physical activity Types of physical activity Not sure what kinds of physical activity you should do? Well, you need three main types of activity . They are aerobic (sometimes called "cardio"), muscle-strengthening , ...

  10. Facts about Physical Activity

    Science.gov (United States)

    ... Micronutrient Malnutrition State and Local Programs Facts about Physical Activity Recommend on Facebook Tweet Share Compartir Some Americans ... Activity Guideline for aerobic activity than older adults. Physical activity and socioeconomic status Adults with more education are ...

  11. Physical Activity Guidelines

    Science.gov (United States)

    ... use this site. health.gov Physical Activity Guidelines Physical Activity Physical activity is key to improving the health of the Nation. Based on the latest science, the Physical Activity Guidelines for Americans is an essential resource for ...

  12. Active knee joint flexibility and sports activity

    DEFF Research Database (Denmark)

    Hahn, Thomas; Foldspang, Anders; Vestergaard, E

    1999-01-01

    The aim of the study was to estimate active knee flexion and active knee extension in athletes and to investigate the potential association of each to different types of sports activity. Active knee extension and active knee flexion was measured in 339 athletes. Active knee extension...... was significantly higher in women than in men and significantly positively associated with weekly hours of swimming and weekly hours of competitive gymnastics. Active knee flexion was significantly positively associated with participation in basketball, and significantly negatively associated with age and weekly...... hours of soccer, European team handball and swimming. The results point to sport-specific adaptation of active knee flexion and active knee extension. Udgivelsesdato: 1999-Apr...

  13. Sexism and gender violence in university students from Tabasco (México) and Lleida (Catalonia): Measurement invariance and cross-cultural differences

    OpenAIRE

    León-Ramírez, Beatriz; Ferrando Piera, Pere Joan

    2015-01-01

    The present article reports a cross-cultural correlational study basedon two-groups of young undergraduate students from Mexico and Catalonia (Spain). The main purposes were: (a) to assess the measurement invariance of a sexism inventory in both groups; (b) to compare the group means in hostile and benevolent sexism, and (c) to assess the across-group equivalence in the relations between the sexism scores and measures of gender violence. The ultimate aim of the assessment was to explore the p...

  14. Histología del ciclo reproductor de hembras del pejelagarto Atractosteus tropicus (Lepisosteiformes: Lepisosteidae) enTabasco, México

    OpenAIRE

    Otilio Méndez-Marin; Arlette Amalia Hernández Franyutti; Carlos Alfonso Álvarez-González; Wilfrido Miguel Contreras-Sánchez; Mari Carmen Uribe Aranzábal

    2012-01-01

    En el sureste de México A. tropicus es una especie de gran importancia ecológica, económica, cultural y para acuicultura, sin embargo, sus poblaciones silvestres han disminuido a causa de diversas actividades antropogénicas, por lo que se caracterizó el ciclo reproductor de A. tropicus, a partir de los cambios en los elementos germinales y somáticos durante la ovogénesis y la estructura de toda la gónada, información valiosa para el mejor manejo y aprovechamiento de la especie. Mensualmente s...

  15. Los huertos familiares como proveedores de servicios ambientales en la región de La Chontalpa, Tabasco, México.

    OpenAIRE

    Chablé Pascual, Rosalva

    2014-01-01

    En huertos familiares de la zona de la Chontalpa se analizaron la estructura, diversidad y uso de las especies de flora y fauna, para ello se aplicaron encuestas preliminares que permitió encontrar a los informantes claves y elegir los 27 huertos con los que se trabajó, posteriormente se aplicaron entrevistas semi-estructuradas (informantes claves), se realizó el cálculo de índice de diversidad utilizando el método de Shannon-Wiener. En los resultados se encontró un total de 330 especies de v...

  16. Un programa de fertilización sustentable para el Ingenio "Presidente Benito Juárez" en Tabasco, México

    Directory of Open Access Journals (Sweden)

    S. Salgado-García

    2011-01-01

    Full Text Available Las dosis de fertilización y sitio específicos para el cultivo de caña de azúcar en el área de abastecimiento del Ingenio "Presidente Benito Juárez" (Ipbj no habían sido precisados, sin embargo, el alto costo de los fertilizantes químicos y la necesidad de reducir la contaminación del ambiente obligan a optimizar su uso. A fin de precisar dosis de fertilización adecuadas para dicha área, este trabajo emplea la metodología del "Sistema Integrado para Recomendar Dosis de Fertilizantes", tomando en cuenta las características de los suelos y el rendimiento potencial. Como parte de este estudio, se identificaron las subunidades de suelo mediante interpretación de fotografías aéreas, reconocimientos de campo y muestreos (-1.20 m en el área de influencia del Ipbj (92,973 ha. En cada unidad se describieron perfiles agrológicos y se hicieron análisis físico-químicos para clasificar los suelos, según el Referencial Mundial de Suelos (wrb. Los resultados generaron cinco polígonos de Thiessen, con precipitaciones anuales entre 1,640 a 2,227 mm. Se determinó una dosis de fertilización npk para cada subunidad de suelo, usando el modelo conceptual de balance entre demanda del nutrimento, el suministro y la eficiencia del fertilizante aplicado. Las dosis de fertilización ajustadas son (N, P2O5, K2O kg/ha, 120-60-60 para los suelos Cambisolesflúvicos, endogléyicos y estágnicos, 120-70-80 para Cambisoles y Gleysoles; 160-80-80 para Vertisoles gléyico-estágnicos, 120-80-80 para Vertisoles estágnico-éutricos. Además, se generó un mapa de fertilización específico para el área de abasto del Ipbj, a escala 1:40 000.

  17. [Prevalence and gravity of depression and anxiety in patients with obesity and type 2 diabetes: a study in the population of Tabasco, Mexico].

    Science.gov (United States)

    Martínez Hernández, Fátima; Tovilla Zárate, Carlos Alfonso; López Narváez, Lilia; Juárez Rojop, Isela E; Jiménez Santos, María A; González Gutiérrez, Cristell P; Pool García, Sherezada

    2014-12-01

    The aim of this study was to assess the prevalence of anxiety and depression in groups of obese and normal-weight individuals with type 2 diabetes. Also, to analyze the severity of depression in type 2 diabetics by taking into account the body mass index in people with this condition. This study included 702 patients with type 2 diabetes, 236 with normal weight, and 231 with obesity. All participants completed a demographic questionnaire, the Hamilton Anxiety Rating Scale and the Hamilton Depression Rating Scale. In patients with obesity, 48.48% (95% CI: 41.82-55.14) were positive for anxiety and 49.78% (95% CI: 43.11-56.44) for depression. A significant correlation existed between the Hamilton Depression Rating Scale and body mass index with a correlation coefficient of 0.11 (p = 0.003). Also, a significant correlation coefficient equal to 0.107 (p = 0.005) between the Hamilton Anxiety Rating Scale and body mass index was found. In addition, when we analyzed depression scores, significant differences were encountered for gender between normal-weight and obesity groups in the range of severe (p = 0.01) and very severe (p = 0.04) cases. In view of the existing relationships observed among obesity, depression, anxiety, and gender in type 2 diabetics, we consider that a psychological intervention is necessary for an integral management of these patients.

  18. Potencial agroecológico de los huertos familiares en el municipio de H. Cárdenas, Tabasco: Permanencia y prospectivas de desarrollo.

    OpenAIRE

    Gómez Gómez, Bety

    2010-01-01

    La investigación aborda la importancia del sustento y permanencia de los huertos familiares desde el punto de vista de la Agroecología con una visión multidisciplinaria, no solo para el estudio de las interacciones sociales, económicas y ecológicas; también, el desarrollo, diseño y evaluación de los agroecosistemas, áreas y regiones agrícolas, o bien unidades jerárquicas grandes donde se desarrolla la producción agrícola. Se conoce al huerto familiar como un sistema agroforestal, que conserv...

  19. INFLUENCE OF SILVOPASTORAL SYSTEM “LIVE FENCES” OF Gliricidia sepium ON SOIL RESPIRATION IN TACOTALPA, TABASCO, MEXICO

    Directory of Open Access Journals (Sweden)

    G. Villanueva-López

    2014-08-01

    Full Text Available The aim of this study was to quantify rates of soil respiration on livestock systems with live fences (LF formed by Gliricidia sepium trees and on livestock systems in signal grass monoculture (MP (Brachiaria decumbens; examine the variation of flows in the rainy and dry seasons, and fluctuations during the day, as well as soil temperature and relative humidity. Soil respiration was measured twice a month, four times a day between the hours of 00:00 to 06:00 h, 6:00 to 12:00 h, 12:00 to 18:00 h, and 18:00 to 24:00 h, in both seasons. Soil temperature and the relative humidity were simultaneously measured. The results show that the rate of soil respiration is similar between these systems, LF issued 0.97 and MP 1.01 mol CO2 m2 h-1. In contrast, there was influence of the time of year and time of collection of the samples. In both systems the soil flows were higher in the rainy season (1.1 mol CO2 m2 h-1 on average and slightly lower in the dry season (0.90 mol CO2 m2 h-1 on average and were higher during the night (00:00 to 06:00 hours, during the early morning hours (6:00 to 12:00 hours. Soil temperature was higher in the MP, and the relative humidity in LF. It is concluded that the main factor that caused the variation in soil respiration rates was the presence of G. sepium trees in LF, which led to lower temperatures and more stable humidity, which resulted in lower soil CO2 fluxes.

  20. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Needs for Pregnant or Postpartum Women Physical Activity & Health Adding Physical Activity to Your Life Activities for Children Activities for ... June 4, 2015 Content source: Division of Nutrition, Physical Activity, and Obesity , National Center for Chronic Disease Prevention and Health Promotion ... Listen Watch ...

  1. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... gov . Physical Activity Physical Activity Basics Needs for Adults Needs for Children What Counts Needs for Older Adults Needs for Pregnant or Postpartum Women Physical Activity & ...

  2. Physical Activity Assessment

    Science.gov (United States)

    Current evidence convincingly indicates that physical activity reduces the risk of colon and breast cancer. Physical activity may also reduce risk of prostate cancer. Scientists are also evaluating potential relationships between physical activity and other cancers.

  3. Activities of Daily Living

    Science.gov (United States)

    ... With Parkinson's › Managing Parkinson's › Activities of Daily Living Activities of Daily Living Sometimes Parkinson’s disease (PD) can complicate the basic daily activities a person with living with Parkinson’s once did ...

  4. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... About Physical Activity Data, Trends and Maps Surveillance Systems Resources & Publications Reports Adults Need More Physical Activity MMWR Data Highlights State Indicator Report on Physical Activity, 2014 Recommendations & Guidelines Fact Sheets & Infographics Social Media Tools Community ...

  5. Guide to Physical Activity

    Science.gov (United States)

    ... Families ( We Can! ) Health Professional Resources Guide to Physical Activity Physical activity is an important part of your ... to injury. Examples of moderate-intensity amounts of physical activity Common Chores Washing and waxing a car for ...

  6. Physical Activity Basics

    Science.gov (United States)

    ... Weight Breastfeeding Micronutrient Malnutrition State and Local Programs Physical Activity Basics Recommend on Facebook Tweet Share Compartir How much physical activity do you need? Regular physical activity helps improve ...

  7. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Needs for Pregnant or Postpartum Women Physical Activity & Health Adding Physical Activity to Your Life Activities for ... Obesity , National Center for Chronic Disease Prevention and Health Promotion Email Recommend Tweet YouTube Instagram Listen Watch ...

  8. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Adults Needs for Children What Counts Needs for Older Adults Needs for Pregnant or Postpartum Women Physical ... to Your Life Activities for Children Activities for Older Adults Overcoming Barriers Measuring Physical Activity Intensity Target ...

  9. Measuring Physical Activity Intensity

    Science.gov (United States)

    ... 67 Data & Statistics Facts About Physical Activity Data, Trends and Maps Surveillance Systems Resources & Publications Reports Adults Need More Physical Activity MMWR Data Highlights State Indicator Report on Physical Activity, 2014 Recommendations & Guidelines Fact ...

  10. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... 67 Data & Statistics Facts About Physical Activity Data, Trends and Maps Surveillance Systems Resources & Publications Reports Adults Need More Physical Activity MMWR Data Highlights State Indicator Report on Physical Activity, 2014 Recommendations & Guidelines Fact ...

  11. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Activity, 2014 Recommendations & Guidelines Fact Sheets & Infographics Social Media Tools Community Strategies Worksite Physical Activity Steps to ... counts as aerobic activity, watch this video: Windows Media Player, 4:48 More videos Here are some ...

  12. Physical activity and obesity

    National Research Council Canada - National Science Library

    Bouchard, Claude; Katzmarzyk, Peter T

    2010-01-01

    ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 The Physical Activity and Exercise Continuum 7 Darren Warburton Definition of Health, Physical Activity, and Exercise . . . . . . . 7 The Continuum...

  13. Physical Activity During School

    DEFF Research Database (Denmark)

    Østergaard, Lars Domino

    to be even more active during school hours further enhancing their academic behaviour, it is important to know when, why and how they are active, and their attitude towards different types of physical activities. Therefore, the aim of this study was to categorize the physical activities attended by students...... during school hours and to elucidate their attitude towards the different types of activities. The data consisted of observations of lessons followed by group interviews. Analyses of the observations revealed six categories of physical activities, varying from mandatory physical activities, activities...

  14. Physical Activity and Cancer

    Science.gov (United States)

    ... Cancer Genetics Services Directory Cancer Prevention Overview Research Physical Activity and Cancer On This Page What is physical activity? What is known about the relationship between physical ...

  15. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Physical Activity, 2014 Recommendations & Guidelines Fact Sheets & Infographics Social Media Tools Community Strategies Worksite Physical Activity Steps to Wellness Walkability Audit Tool Sample ...

  16. Post Process Characterization of Friction Stir Welded Components Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Luna Innovations Incorporated proposes in this STTR Phase II project to continue development and validation of Luna's amplitude-dependent, nonlinear ultrasonic...

  17. Criminalisation of Activism

    DEFF Research Database (Denmark)

    Uldam, Julie

    Different forms of political participation involve different challenges. This paper focuses on challenges to radical activism and particularly the criminalisation of activism.......Different forms of political participation involve different challenges. This paper focuses on challenges to radical activism and particularly the criminalisation of activism....

  18. Diabetes - keeping active

    Science.gov (United States)

    ... ways to add more activity to your day. Introduction There are many benefits to being active. Staying ... of activities and locations. When the weather is cold or wet, stay active by ... and equipment. Start slowly. A common mistake is to try and do too much ...

  19. Increasing Youth Physical Activity with Activity Calendars

    Science.gov (United States)

    Eckler, Seth

    2016-01-01

    Physical educators often struggle with ways to get their students to be active beyond the school day. One strategy to accomplish this is the use of physical activity calendars (PACs). The purpose of this article is to support the use of PACs and give practical advice for creating effective PACs.

  20. Active nematic gels as active relaxing solids

    Science.gov (United States)

    Turzi, Stefano S.

    2017-11-01

    I propose a continuum theory for active nematic gels, defined as fluids or suspensions of orientable rodlike objects endowed with active dynamics, that is based on symmetry arguments and compatibility with thermodynamics. The starting point is our recent theory that models (passive) nematic liquid crystals as relaxing nematic elastomers. The interplay between viscoelastic response and active dynamics of the microscopic constituents is naturally taken into account. By contrast with standard theories, activity is not introduced as an additional term of the stress tensor, but it is added as an external remodeling force that competes with the passive relaxation dynamics and drags the system out of equilibrium. In a simple one-dimensional channel geometry, we show that the interaction between nonuniform nematic order and activity results in either a spontaneous flow of particles or a self-organization into subchannels flowing in opposite directions.

  1. Neutron Activation Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Corliss, William R.

    1968-01-01

    In activation analysis, a sample of an unknown material is first irradiated (activated) with nuclear particles. In practice these nuclear particles are almost always neutrons. The success of activation analysis depends upon nuclear reactions which are completely independent of an atom's chemical associations. The value of activation analysis as a research tool was recognized almost immediately upon the discovery of artificial radioactivity. This book discusses activation analysis experiments, applications and technical considerations.

  2. Lectures Abandoned: Active Learning by Active Seminars

    DEFF Research Database (Denmark)

    Christensen, Henrik Bærbak; Corry, Aino Vonge

    2012-01-01

    Traditional lecture-based courses are widely criticised for be- ing less eective in teaching. The question is of course what should replace the lectures and various active learning tech- niques have been suggested and studied. In this paper, we report on our experiences of redesigning a software ......- tive seminars as a replacement of traditional lectures, an activity template for the contents of active seminars, an ac- count on how storytelling supported the seminars, as well as reports on our and the students' experiences....

  3. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local Programs Measuring ... About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local Programs File ...

  4. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Address What's this? Submit What's this? Submit Button Our Division About Us Nutrition Physical Activity Overweight & Obesity ... Address What's this? Submit What's this? Submit Button Our Division About Us Nutrition Physical Activity Overweight & Obesity ...

  5. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Intensity The amount of energy used by the body per minute of activity. The table below lists ... upon the amount of energy used by the body while doing the activity. Top of Page Moderate ...

  6. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... for a breath. Absolute Intensity The amount of energy used by the body per minute of activity. ... or vigorous-intensity based upon the amount of energy used by the body while doing the activity. ...

  7. Active Marine Station Metadata

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Active Marine Station Metadata is a daily metadata report for active marine bouy and C-MAN (Coastal Marine Automated Network) platforms from the National Data...

  8. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... relative intensity and absolute intensity. Relative Intensity The level of effort required by a person to do an activity. When using relative intensity, people pay attention to how physical activity affects their heart rate ...

  9. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Physical Activity, 2014 Recommendations & Guidelines Fact Sheets & Infographics Social Media Tools Community Strategies Worksite Physical Activity Steps ... Obesity , National Center for Chronic Disease Prevention and Health Promotion Email Recommend Tweet YouTube Instagram Listen Watch ...

  10. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Data, Trends and Maps Surveillance Systems Resources & Publications Reports Adults Need More Physical Activity MMWR Data Highlights State Indicator Report on Physical Activity, 2014 Recommendations & Guidelines Fact Sheets & ...

  11. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... intensity, people pay attention to how physical activity affects their heart rate and breathing. The talk test ... Physical Activity, and Obesity , National Center for Chronic Disease Prevention and Health Promotion Email Recommend Tweet YouTube ...

  12. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... and absolute intensity. Relative Intensity The level of effort required by a person to do an activity. When using relative intensity, people pay attention to how physical activity affects their heart rate ...

  13. Active ageing technologies

    DEFF Research Database (Denmark)

    Lassen, Aske Juul

    In the recent decade the concept of active aging has become important in the Western hemisphere. The World Health Organization and The European Union have staged active aging as a core policy area and initiated programs of physical activity, independence and prolonged working lives among...... the elderly. As part of this rearticulation of old age, many new technologies take form. This paper uses a wide concept of technologies (devices, regimes, strategies and ways of doing) and argues that technologies form active aging subjectivities, and on the other hand, that these subjectivities...... of physical and productive activity; e.g. that a game of billiards is a technology of active aging. Thus, active aging is enacted in the socio-material practices of the technologies in this paper. The paper contributes with a strengthening of the concept of active aging, by focusing on entangled practices...

  14. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... activity. When using relative intensity, people pay attention to how physical activity affects their heart rate and breathing. The talk test is a simple way to measure relative intensity. In general, if you're ...

  15. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... What's this? Submit Button Our Division About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient ... What's this? Submit Button Our Division About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient ...

  16. Preschoolers’ Physical Activity Behaviours

    Science.gov (United States)

    Irwin, Jennifer D.; He, Meizi; Bouck, L. Michelle Sangster; Tucker, Patricia; Pollett, Graham L.

    2016-01-01

    Objectives To understand parents’ perspectives of their preschoolers’ physical activity behaviours. Methods A maximum variation sample of 71 parents explored their preschoolers’ physical activity behaviours through 10 semi-structured focus group discussions. Results Parents perceived Canada’s Physical Activity Guidelines for Children as inadequate; that their preschoolers get and need more than 30–90 minutes of activity daily; and that physical activity habits must be established during the preschool years. Nine barriers against and facilitators toward adequate physical activity were proposed: child’s age, weather, daycare, siblings, finances, time, society and safety, parents’ impact, and child’s activity preferences. Discussion The need for education and interventions that address current barriers are essential for establishing physical activity as a lifestyle behaviour during early childhood and, consequently, helping to prevent both childhood and adulthood obesity. PMID:16625802

  17. USAID Activity Locations

    Data.gov (United States)

    US Agency for International Development — The USAID Activities dataset is a snapshot of activities supported by USAID including their geographical locations within countries at the time of the snapshot. The...

  18. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Our Division About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local ... Our Division About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local ...

  19. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... or vigorous-intensity based upon the amount of energy used by the body while doing the activity. Top of ... 4, 2015 Content source: Division of Nutrition, Physical Activity, and Obesity , National ...

  20. Major operations and activities

    Energy Technology Data Exchange (ETDEWEB)

    Black, D.G.

    1995-06-01

    This section of the 1994 Hanford Site Environmental Report summarizes the major operations and activities on the site. These operations and activities include site management, waste management, environmental restoration and corrective actions, and research and technology development.

  1. Family Activities for Fitness

    Science.gov (United States)

    Grosse, Susan J.

    2009-01-01

    This article discusses how families can increase family togetherness and improve physical fitness. The author provides easy ways to implement family friendly activities for improving and maintaining physical health. These activities include: walking, backyard games, and fitness challenges.

  2. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Division About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local Programs ... Division About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local Programs ...

  3. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... About Physical Activity Data, Trends and Maps Surveillance Systems Resources & Publications Reports Adults Need More Physical Activity ... Windows Media Player, 4:48 More videos Here are some ways to understand and measure the intensity ...

  4. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... activity. If you're doing vigorous-intensity activity, you will not be able to say more than a few words without pausing for a breath. Absolute ... ABOUT About CDC Jobs Funding LEGAL ...

  5. Activity-based design

    DEFF Research Database (Denmark)

    Andersen, Peter Bøgh

    2006-01-01

      In many types of activities communicative and material activities are so intertwined that the one cannot be understood without taking the other into account. This is true of maritime and hospital work that are used as examples in the paper. The spatial context of the activity is also important:...... and automatic machinery can replace one another in an activity. It also gives an example of how to use the framework for design....

  6. Comparing Active Vision Models

    NARCIS (Netherlands)

    Croon, G.C.H.E. de; Sprinkhuizen-Kuyper, I.G.; Postma, E.O.

    2009-01-01

    Active vision models can simplify visual tasks, provided that they can select sensible actions given incoming sensory inputs. Many active vision models have been proposed, but a comparative evaluation of these models is lacking. We present a comparison of active vision models from two different

  7. Computers + Student Activities Handbook.

    Science.gov (United States)

    Masie, Elliott; Stein, Michele

    Designed to provide schools with the tools to start utilizing computers for student activity programs without additional expenditures, this handbook provides beginning computer users with suggestions and ideas for using computers in such activities as drama clubs, yearbooks, newspapers, activity calendars, accounting programs, room utilization,…

  8. Comparing active vision models

    NARCIS (Netherlands)

    Croon, G.C.H.E. de; Sprinkhuizen-Kuyper, I.G.; Postma, E.O.

    2009-01-01

    Active vision models can simplify visual tasks, provided that they can select sensible actions given incoming sensory inputs. Many active vision models have been proposed, but a comparative evaluation of these models is lacking. We present a comparison of active vision models from two different

  9. Recurrent radio activity in active galactic nuclei

    Directory of Open Access Journals (Sweden)

    Jamrozy M.

    2012-12-01

    Full Text Available There has been a growing body of persuasive evidence to indicate that AGN activity, powered by mass accretion onto a supermassive black hole, can involve multiple episodes. Thus thinking of jet activity as occurring within a unique brief period in the life of a galaxy is no longer valid. The most striking examples of AGNs with recurrent jet activity are the double-double radio sources, which contain two or more pairs of distinct lobes on the opposite sides of a parent optical object. On the other hand, we have now conclusive arguments that galaxy mergers and interactions are principal triggers for AGNs. Quite a number of examples of powerful radio sources hosted by galaxies with peculiar optical morphologies (tails, shells, dust-lanes, etc. can be cited to support such a scenario. The structure and spectra of extended radio emission from radio galaxies, with sizes ranging up to a few Mpc, can provide a lot of information on the history of the central AGN activity, while the spectral and dynamical ages of these extended radio lobes could be used to constrain the time scales of recurrent AGN activity.

  10. Proteolytic activities in yeast.

    Science.gov (United States)

    Saheki, T; Holzer, H

    1975-03-28

    Studies on the mechanism and time course of the activation of proteinases A (EC 3.4.23.8), B (EC 3.4.22.9) and C (EC 3.4.12.--) in crude yeast extracts at pH 5.1 and 25 degrees C showed that the increase in proteinase B activity is paralleled with the disappearance of proteinase B inhibitor. Addition of purified proteinase A to fresh crude extracts accelerates the inactivation of the proteinase B inhibitor and the appearance of maximal activities of proteinases B and C. The decrease of proteinase B inhibitor activity and the increase of proteinase B activity are markedly retarded by the addition of pepstatin. Because 10-minus 7 M pepstatin completely inhibits proteinase A without affecting proteinase B activity, this is another indication for the role of proteinase A during the activation of proteinase B. Whereas extracts of yeast grown on minimal medium reached maximal activation of proteinases B and C after 20 h of incubation at pH 5.1 and 25 degrees C, extracts of yeast grown on complete medium had to be incubated for about 100 h. In the latter case, the addition of proteinas A results in maximal activation of proteinases B and C and disappearance of proteinase B inhibitor activity only after 10--20 h of incubation. With the optimal conditions, the maximal activities of proteinases A, B and C, as well as of the proteinase B inhibitor, were determined in crude extracts of yeast that had been grown batchwise for different lengths of time either on minimal or on complete medium. Upon incubation, all three proteinases were activated by several times their initial activity. This reflects the existence of proteolytically degradable inhibitors of the three proteinases and together with the above mentioned observations it demonstrates that the "activation" of yeast proteinases A, B and C upon incubation results from the proteolytic digestion of inhibitors rather than from activation of inactive zymogens by limited proteolysis.

  11. Accessibility, activity participation and location of activities

    DEFF Research Database (Denmark)

    Næss, Petter

    2006-01-01

    By investigating relationships between residential location and the availability of facilities, location of activities, trip distances, activity participation and trip frequencies, this paper seeks to contribute to a more detailed and nuanced understanding of the relationships between residential...... outweigh each other. However, differences in trip distances due to the location of the dwelling relative to concentrations of facilities translate into substantially longer total travelling distances among suburbanites than among inner-city residents....... location and the amount of daily-life travel in an urban region. The empirical data are from a comprehensive study of residential location and travel in Copenhagen Metropolitan Area. Differences between inner- and outer-area residents in activity frequencies and trip frequencies are modest and partly...

  12. Physico-chemical analysis of the bricks used in the construction of the pyramid of the archaeological zone of Comalcalco, Tabasco; Analisis fisico-quimico de los ladrillos usados en la construccion de la piramide de la zona arqueologica de Comalcalco, Tabasco

    Energy Technology Data Exchange (ETDEWEB)

    Custodio G, E.; Acosta A, M. [Universidad Juarez Autonoma de Tabasco, 86680 Tabasco (Mexico); Sebastian, P.J. [CIE-UNAM, 62580 Temixco, Morelos (Mexico); Trevino P, C.G. [INAOE, 72000 Puebla (Mexico); Mendoza A, D. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2005-07-01

    The presence of clay as human hand craft is first observed in Mexico on westernmost city of the Maya region, known as Comalcalco, therefore Comalcalco comes from the nahuatl: Comali- cali-co or 'Brick house'. This city that flourish on the classical period between the centuries I b.C. to IX a.C, was contemporary to Palenque and Yaxchilan among others. Due to the lack of rocks for construction and abundance of clay in the region, the Mayas used the clay as fired clay bricks to build their palaces and ceremonial temples. On this work, we present a study using Sem, EDS and XRD on the fired clay bricks used on these constructions to induce de type clay used and temperature of firing. (Author)

  13. Análisis comparativo de la estructura, diversidad y composición de comunidades arbóreas de un paisaje agropecuario en Tabasco, México Comparative analysis of structure, diversity and composition of tree communities in an agricultural landscape of Tabasco, Mexico

    Directory of Open Access Journals (Sweden)

    Noel González-Valdivia

    2012-03-01

    Full Text Available Con el objetivo de evaluar el efecto del manejo sobre la diversidad, estructura y composición de la flora arbórea nativa en un paisaje montañoso neotropical, se estudiaron 2 ecomosaicos: selva mediana y su matriz agropecuaria. Se inventariaron 96 parcelas registrando 172 especies. Los ecomosaicos difieren en riqueza, abundancia de especies y estructura como resultado del manejo del paisaje. La composición de los remanentes de selva se muestra como extrema de los potreros. En la vegetación secundaria madura se encontró la mayor riqueza (92 especies, mientras que los potreros fueron más pobres en especies. La flora arbórea de selva está representada en un 66% dentro de la matriz, particularmente en la vegetación secundaria; 27 especies son características de las unidades de paisaje, la mayor parte son zoocoras y están asociadas a comunidades maduras. Se encontró que hay complementariedad entre los ecomosaicos, la cual está relacionada con el hecho de que los campesinos mantienen áreas de reserva de selva, tanto en un núcleo compacto como en fragmentos distribuidos a lo largo del paisaje. Sin embargo, las tendencias indican que el sistema de acahuales tiende a desaparecer, lo que homogeneizará la matriz y aumentará el contraste entre ecomosaicos, comprometiendo la regeneración de la selva y de las especies asociadas al mismo.In order to evaluate the effect of management on diversity, structure and composition of native arboreal flora in a mountainous Neotropical landscape, we studied 2 ecomosaics: montane rain forest, and the surrounding agricultural matrix. We inventoried 96 plots, registering 172 species. As a result of management, the ecomosaics differed in species richness and abundance as well as in vegetation structure, with forest remnants and pastures as the 2 extremes. Mature secondary vegetation had the most tree species (92, and pastures the fewest. Two thirds of forest tree species were also represented in the surrounding matrix, especially in fallows. Twenty-seven species were characteristic of particular landscape units. Most of these were zoochores associated with mature forest. The actual landscape management maintains a certain proportion of conserved habitats and dispersed forest remnants which enrich the agricultural matrix. However the tendency toward less fallow area and more pasture indicates a transition toward a more homogeneous agricultural matrix, less forest regrowth and greater contrast between forest and agricultural ecomosaics. This will increase the contrast between the ecomosaics and threaten the regeneration of mature forest and its associated species.

  14. Factor XII Contact Activation.

    Science.gov (United States)

    Naudin, Clément; Burillo, Elena; Blankenberg, Stefan; Butler, Lynn; Renné, Thomas

    2017-11-01

    Contact activation is the surface-induced conversion of factor XII (FXII) zymogen to the serine protease FXIIa. Blood-circulating FXII binds to negatively charged surfaces and this contact to surfaces triggers a conformational change in the zymogen inducing autoactivation. Several surfaces that have the capacity for initiating FXII contact activation have been identified, including misfolded protein aggregates, collagen, nucleic acids, and platelet and microbial polyphosphate. Activated FXII initiates the proinflammatory kallikrein-kinin system and the intrinsic coagulation pathway, leading to formation of bradykinin and thrombin, respectively. FXII contact activation is well characterized in vitro and provides the mechanistic basis for the diagnostic clotting assay, activated partial thromboplastin time. However, only in the past decade has the critical role of FXII contact activation in pathological thrombosis been appreciated. While defective FXII contact activation provides thromboprotection, excess activation underlies the swelling disorder hereditary angioedema type III. This review provides an overview of the molecular basis of FXII contact activation and FXII contact activation-associated disease states. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

  15. Marine Biology Activities. Ocean Related Curriculum Activities.

    Science.gov (United States)

    Pauls, John

    The ocean affects all of our lives. Therefore, awareness of and information about the interconnections between humans and oceans are prerequisites to making sound decisions for the future. Project ORCA (Ocean Related Curriculum Activities) has developed interdisciplinary curriculum materials designed to meet the needs of students and teachers…

  16. Participatory Activities in Practice

    DEFF Research Database (Denmark)

    Gottlieb, Frederik; Sørensen, Vicki

    Through a series of participatory activities within a product development project, we analyse how these activities influence the design process and how new meaning is created through the interaction of crossing intentions (Larsen, 2010). By focusing on a specific theme in the project we reflect...... on how participatory activities are a key part in establishing important interactions between participants resulting in new design approaches. At other times participatory activities become a part of blurring these new approaches when performing new participatory activities towards developing new...... iterations of the concept in focus. We conclude that participatory activities can play a key part in the uptake of user knowledge but that a participatory innovation approach of establishing collaboration between crossing intentions can as well be considered provocative and as such, result in resistance...

  17. Mechanics of active surfaces

    Science.gov (United States)

    Salbreux, Guillaume; Jülicher, Frank

    2017-09-01

    We derive a fully covariant theory of the mechanics of active surfaces. This theory provides a framework for the study of active biological or chemical processes at surfaces, such as the cell cortex, the mechanics of epithelial tissues, or reconstituted active systems on surfaces. We introduce forces and torques acting on a surface, and derive the associated force balance conditions. We show that surfaces with in-plane rotational symmetry can have broken up-down, chiral, or planar-chiral symmetry. We discuss the rate of entropy production in the surface and write linear constitutive relations that satisfy the Onsager relations. We show that the bending modulus, the spontaneous curvature, and the surface tension of a passive surface are renormalized by active terms. Finally, we identify active terms which are not found in a passive theory and discuss examples of shape instabilities that are related to active processes in the surface.

  18. Solar Activity and TECHNOSPHERE

    Science.gov (United States)

    Kuznetsov, V. D.

    2017-05-01

    A review of solar activity factors impacting on the near-Earth space and technosphere are given. Solar activity in the form of enhanced fluxes of hard electromagnetic and corpuscular radiation, solar wind streams and mass ejections is considered as a principal source of space weather creating the dangerous for the astronauts, satellites, International Space Station and for the ground technical systems. The examples of effects of solar activity on the space and ground technosphere are given.

  19. Confinement for Active Objects

    OpenAIRE

    Florian Kammuller

    2014-01-01

    In this paper, we provide a formal framework for the security of distributed active objects. Active objects com-municate asynchronously implementing method calls via futures. We base the formal framework on a security model that uses a semi-lattice to enable multi-lateral security crucial for distributed architectures. We further provide a security type system for the programming model ASPfun of functional active objects. Type safety and a confinement property are presented. ASPfun thus reali...

  20. CDBG Public Services Activity

    Data.gov (United States)

    Department of Housing and Urban Development — CDBG activity related to public services, including senior services, legal services, youth services, employment training, health services, homebuyer counseling, food...

  1. CDBG Housing Activity

    Data.gov (United States)

    Department of Housing and Urban Development — CDBG activity related to housing, including multifamily rehab, housing services, code enforcement, operation and repair of foreclosed property and public housing...

  2. Physical activity and sarcopenia.

    Science.gov (United States)

    Pillard, Fabien; Laoudj-Chenivesse, Dalila; Carnac, Gilles; Mercier, Jacques; Rami, Jacques; Rivière, Daniel; Rolland, Yves

    2011-08-01

    Physical activity can be a valuable countermeasure to sarcopenia in its treatment and prevention. In considering physical training strategies for sarcopenic subjects, it is critical to consider personal and environmental obstacles to access opportunities for physical activity for any patient with chronic disease. This article presents an overview of current knowledge of the effects of physical training on muscle function and the physical activity recommended for sarcopenic patients. So that this countermeasure strategy can be applied in practice, the authors propose a standardized protocol for prescribing physical activity in chronic diseases such as sarcopenia. Copyright © 2011 Elsevier Inc. All rights reserved.

  3. CDBG Economic Development Activity

    Data.gov (United States)

    Department of Housing and Urban Development — CDBG activity related to economic development, including commercial or industrial rehab, commercial or industrial land acquisition, commercial or industrial...

  4. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... What's this? Submit Button Our Division About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local Programs ...

  5. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Adults Overcoming Barriers Measuring Physical Activity Intensity Target Heart Rate & Estimated Maximum Heart Rate Perceived Exertion (Borg Rating of Perceived Exertion Scale) ...

  6. Active Flow Control Activities at NASA Langley

    Science.gov (United States)

    Anders, Scott G.; Sellers, William L., III; Washburn, Anthony E.

    2004-01-01

    NASA Langley continues to aggressively investigate the potential advantages of active flow control over more traditional aerodynamic techniques. This paper provides an update to a previous paper and describes both the progress in the various research areas and the significant changes in the NASA research programs. The goals of the topics presented are focused on advancing the state of knowledge and understanding of controllable fundamental mechanisms in fluids as well as to address engineering challenges. An organizational view of current research activities at NASA Langley in active flow control as supported by several projects is presented. On-center research as well as NASA Langley funded contracts and grants are discussed at a relatively high level. The products of this research are to be demonstrated either in bench-top experiments, wind-tunnel investigations, or in flight as part of the fundamental NASA R&D program and then transferred to more applied research programs within NASA, DOD, and U.S. industry.

  7. Habitats, activities, and signs

    DEFF Research Database (Denmark)

    Andersen, Peter Bøgh; Brynskov, Martin

    2004-01-01

    Digital habitats is a framework for designing and modeling environments for activities that involve mobile and embedded computing systems. This paper 1) introduces the basic concepts of the framework, i.e. activity, thematic role, and the three ‘dimensions’ of a habitat: physical, informational, ...

  8. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Physical Activity Data, Trends and Maps Surveillance Systems Resources & Publications Reports Adults Need More Physical Activity MMWR ... Tracking Stair Usage Project Checklist CDC’s Example Related Resources Walking Step It Up! Surgeon General’s Call to ...

  9. Emotionally Intense Science Activities

    Science.gov (United States)

    King, Donna; Ritchie, Stephen; Sandhu, Maryam; Henderson, Senka

    2015-01-01

    Science activities that evoke positive emotional responses make a difference to students' emotional experience of science. In this study, we explored 8th Grade students' discrete emotions expressed during science activities in a unit on Energy. Multiple data sources including classroom videos, interviews and emotion diaries completed at the end of…

  10. Active Students in Webinars

    Science.gov (United States)

    Kolås, Line; Nordseth, Hugo; Yri, Jørgen Sørlie

    2015-01-01

    To ensure student activity in webinars we have defined 10 learning tasks focusing on production and communication e.g. collaborative writing, discussion and polling, and investigated how the technology supports the learning activities. The three project partners in the VisPed-project use different video-conferencing systems, and we analyzed how it…

  11. Coordinating Shared Activities

    Science.gov (United States)

    Clement, Bradley

    2004-01-01

    Shared Activity Coordination (ShAC) is a computer program for planning and scheduling the activities of an autonomous team of interacting spacecraft and exploratory robots. ShAC could also be adapted to such terrestrial uses as helping multiple factory managers work toward competing goals while sharing such common resources as floor space, raw materials, and transports. ShAC iteratively invokes the Continuous Activity Scheduling Planning Execution and Replanning (CASPER) program to replan and propagate changes to other planning programs in an effort to resolve conflicts. A domain-expert specifies which activities and parameters thereof are shared and reports the expected conditions and effects of these activities on the environment. By specifying these conditions and effects differently for each planning program, the domain-expert subprogram defines roles that each spacecraft plays in a coordinated activity. The domain-expert subprogram also specifies which planning program has scheduling control over each shared activity. ShAC enables sharing of information, consensus over the scheduling of collaborative activities, and distributed conflict resolution. As the other planning programs incorporate new goals and alter their schedules in the changing environment, ShAC continually coordinates to respond to unexpected events.

  12. Global physical activity levels

    DEFF Research Database (Denmark)

    Hallal, Pedro C; Andersen, Lars Bo; Bull, Fiona C

    2012-01-01

    To implement effective non-communicable disease prevention programmes, policy makers need data for physical activity levels and trends. In this report, we describe physical activity levels worldwide with data for adults (15 years or older) from 122 countries and for adolescents (13-15-years...

  13. Activation force splines

    DEFF Research Database (Denmark)

    Engell-Nørregård, Morten Pol; Erleben, Kenny

    We present a method for simulating the active contraction of deformable models, usable for interactive animation of soft deformable objects. We present a novel physical principle as the governing equation for the coupling between the low dimensional 1D activation force model and the higher...

  14. Tendinopathy and Doppler activity

    DEFF Research Database (Denmark)

    Boesen, M I; Koenig, M J; Torp-Pedersen, S

    2006-01-01

    Intratendinous Doppler activity has been interpreted as an equivalent of neovessels in the Achilles tendon and as a sign of tendinosis (AT).......Intratendinous Doppler activity has been interpreted as an equivalent of neovessels in the Achilles tendon and as a sign of tendinosis (AT)....

  15. The Activity of Play

    DEFF Research Database (Denmark)

    Pichlmair, Martin

    This paper presents Activity Theory as a framework for understanding the action of playing games with the intention of building a foundation for the creation of new game design tools and methods. Activity Theory, an epistemological framework rooted in Soviet psychology of the first half of the 20...

  16. Respirometry in activated sludge

    NARCIS (Netherlands)

    Spanjers, H.

    1993-01-01

    The purpose of the study was (1) to develop a respiration meter capable of continuously measuring, using different procedures, the oxygen uptake rate of activated sludge and (2) to expand knowledge about respiration related characteristics of wastewater and activated sludge.

    A

  17. [Field Learning Activities].

    Science.gov (United States)

    Nolde Forest Environmental Education Center, Reading, PA.

    Seventy field activities, pertinent to outdoor, environmental studies, are described in this compilation. Designed for elementary and junior high school students, the activities cover many discipline areas--science, social studies, language arts, health, history, mathematics, and art--and many are multidisciplinary in use. Topics range from soil…

  18. Mental activity and culture

    NARCIS (Netherlands)

    Hofstede, Gert Jan

    2018-01-01

    How does culture affect mental activity? That question, applied to the design of social agents, is tackled in this chapter. Mental activity acts on the perceived outside world. It does so in three steps: perceive, interpret, select action. We see that when culture is taken into account, objective

  19. Obesity and physical activity.

    NARCIS (Netherlands)

    Westerterp, K.R.

    1999-01-01

    Department of Human Biology, Maastricht University, The Netherlands. k.westerterp@hb.unimaas.nl OBJECTIVES: Three aspects of obesity and physical activity are reviewed: whether the obese are inactive; how the activity level can be increased; and which are the effects of an increase in physical

  20. ANTHROPOGENIC ACTIVITIES THREATENING THE ...

    African Journals Online (AJOL)

    Osondu

    2012-02-17

    Feb 17, 2012 ... Abstract. Abundant fauna and flora resources in Nigeria are being threatened due to the increasing rate of anthropogenic activities across the protected areas in the country. This study examined anthropogenic activities threatening the natural resources considered to be of ecotourism value in Old Oyo ...

  1. Peak Longevity Physical Activity

    Science.gov (United States)

    People who engage in three to five times the recommended minimum level of leisure-time physical activity derive the greatest benefit in terms of mortality reduction when compared with people who do not engage in leisure-time physical activity.

  2. Measuring children's physical activity

    DEFF Research Database (Denmark)

    Schneller, Mikkel Bo; Bentsen, Peter; Nielsen, Glen

    2017-01-01

    INTRODUCTION: Accelerometer-based physical activity monitoring has become the method of choice in many large-scale physical activity (PA) studies. However, there is an ongoing debate regarding the placement of the device, the determination of device wear time, and how to solve a lack of participant...

  3. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Obesity Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local Programs Measuring Physical Activity Intensity Recommend on Facebook Tweet Share Compartir For more help with what counts as aerobic activity, watch this video: Windows Media Player, 4:48 More videos Here are some ...

  4. Activity Book: Ocean Ecology.

    Science.gov (United States)

    Learning, 1992

    1992-01-01

    Presents a collection of activities to help elementary students study ocean ecology. The activities have students investigate ocean inhabitants, analyze animal adaptations, examine how temperature and saltiness affect ocean creatures, and learn about safeguarding the sea. Student pages offer reproducible learning sheets. (SM)

  5. Plasminogen activation in cancer

    NARCIS (Netherlands)

    Reijerkerk, Arie

    2004-01-01

    The subject of this thesis focusses on the role of the plasminogen activation system in angiogenesis and cancer. The plasminogen activation system regulates fibrinolysis and controls cell migration and invasion by plasmin-mediated matrix proteolysis. Plasmin is formed upon cleavage of the zymogen

  6. ANTHROPOGENIC ACTIVITIES THREATENING THE ...

    African Journals Online (AJOL)

    Osondu

    2012-02-17

    Feb 17, 2012 ... anthropogenic activities threatening the natural resources considered to be of ecotourism value in Old Oyo National Park. ... Result of the analysis showed that human activities had negative impacts on the Park resources. Recommendations .... Patrol Team (PPT) or the assigned rangers and other diurnal ...

  7. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... CDC’s Example StairWELL Stairwell Appearance Motivational Signs Installing Music Other Ideas to Consider Tracking Stair Usage Project ... an activity. When using relative intensity, people pay attention to how physical activity affects their heart rate ...

  8. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... relative intensity and absolute intensity. Relative Intensity The level of effort required by a person to do an activity. When using relative intensity, people pay attention to how physical activity affects their heart rate and breathing. The talk test is a simple ...

  9. Nutrition Activities Resource Guide.

    Science.gov (United States)

    New York City Board of Education, Brooklyn, NY. Div. of Special Education.

    The resource guide suggests activities to help special education students make appropriate choices about their nutritional habits. It is explained that the activities can be infused into other curriculum areas. The guide consists of five themes and includes performance objectives for each: foods eaten at school (planning a school lunch, keeping a…

  10. Associated Nitrogenase Activity.

    African Journals Online (AJOL)

    The feedback control mechanism in which the demand for fixed N by the plant regulates nitrogenase activity (NA) in legumes as ..... phoenolpyruvate carboxylase in vitro decreases sensitivity to inhibition by L-malate. Plant. Physiology 67:37-42. Silsbury, J.H. (1987). Nitrogenase activity in Trifo- lium subterraneum L. in ...

  11. Analog active filters

    Science.gov (United States)

    Ghausi, M. S.

    1984-01-01

    The evolution of active filters during the time from 1920 to 1980 is considered, taking into account the hardware used to implement a filtering network for voice frequency over 60 years. From 1920 to 1960 the majority of voice-frequency filters was realized as discrete RLC networks. After the development of transistors, it was realized that size and cost reductions could be achieved by replacing the inductors with active networks. In the early 1970's, batch-processed thin-film hybrid integrated circuits began to be employed. The synthesis of transfer functions which are predominantly input/output types is considered. Attention is given to direct realizations, synthesis using component simulation, cascade synthesis, multiple-loop feedback design, active-R and active-C filters, aspects of sensitivity, and switched-capacitor filters.

  12. Ras activation by SOS

    DEFF Research Database (Denmark)

    Iversen, Lars; Tu, Hsiung-Lin; Lin, Wan-Chen

    2014-01-01

    SOS molecules catalyzing nucleotide exchange in H-Ras. Single-molecule kinetic traces revealed that SOS samples a broad distribution of turnover rates through stochastic fluctuations between distinct, long-lived (more than 100 seconds), functional states. The expected allosteric activation of SOS...... by Ras-guanosine triphosphate (GTP) was conspicuously absent in the mean rate. However, fluctuations into highly active states were modulated by Ras-GTP. This reveals a mechanism in which functional output may be determined by the dynamical spectrum of rates sampled by a small number of enzymes, rather......Activation of the small guanosine triphosphatase H-Ras by the exchange factor Son of Sevenless (SOS) is an important hub for signal transduction. Multiple layers of regulation, through protein and membrane interactions, govern activity of SOS. We characterized the specific activity of individual...

  13. Who is actively denitrifying in activated sludge?

    DEFF Research Database (Denmark)

    Hansen, Aviaja Anna; Nielsen, Jeppe Lund

    -scale wastewater treatment plant the transcripts (mRNA) of the nirS, nirK and nosZ denitrification genes expressed under acetate or amino acid consumption were amplified, sequenced and identified. This revealed that the majority of the denitrifiers belonged to Alpha- and Betaproteobacteria, while only few...... with Bacteroidetes. Furthermore, potential denitrifying genera of Alpha- and Betaproteobacteria were quantified in the activated sludge with 16S rRNA gene probes for fluorescence in situ hybridization (FISH). This revealed that Aquaspirillum-related bacteria were dominant followed by bacteria related to Azoarcus...... by microautoradiography combined with FISH....

  14. Active Photonic Devices

    Science.gov (United States)

    Della Valle, Giuseppe; Osellame, Roberto

    The chapter is devoted to active photonic devices fabricated by fs-laser writing. After a brief introduction focused on the role played by fs-laser written active devices, Sect. 10.2 briefly reviews the spectroscopical properties of the most interesting active ions so far exploited, namely erbium, ytterbium, neodimium, and bismuth. In Sect. 10.3 the main figures of merit for an active waveguide, namely the internal gain, the insertion loss, the net gain, and the noise figure are introduced and the experimental procedure for accurate gain measurement is also detailed. A thorough review of the active photonic devices demonstrated with the femtosecond laser microfabrication technique is presented in Sects. 10.4, 10.5, and 10.6, where several active waveguides and amplifiers, prototypal lasers, as well as more functionalized laser devices (operating under single longitudinal mode or stable mode-locking regime) are illustrated, respectively. Finally, conclusions and future perspectives of femtosecond-laser micromachining of active photonic devices are provided.

  15. A universe of activities

    Science.gov (United States)

    Armentia, J.; Jáuregui, F.; Gordón, N.; Manzanal, R.

    Since its opening back in november 1993 the Planetarium of Pamplona has gone a long way creating activities related to teaching and communicating Astronomy, Science and other areas of what we call Culture. In this poster we present a summary of some of the most relevant activities that have had an special relevance throughout these years. We will refer to our “School of Stars” in which more than 400 000 students have already been involved and other activities that have been very appreciated by our visitors.

  16. Active Directory cookbook

    CERN Document Server

    Hunter, Laura

    2008-01-01

    When you need practical hands-on support for Active Directory, the updated edition of this extremely popular Cookbook provides quick solutions to more than 300 common (and uncommon) problems you might encounter when deploying, administering, and automating Microsoft's network directory service. For the third edition, Active Directory expert Laura E. Hunter offers troubleshooting recipes based on valuable input from Windows administrators, in addition to her own experience. You'll find solutions for the Lightweight Directory Access Protocol (LDAP), ADAM (Active Directory Application Mode), m

  17. Evoked cavernous activity.

    Science.gov (United States)

    Yilmaz, Uğur; Soylu, Ahmet; Ozcan, Cemal; Kutlu, Ramazan; Güneş, Ali

    2002-01-01

    Corpus cavernosum electromyography has been widely done to evaluate autonomic dysfunction in patients with erectile dysfunction. We assessed the value of corpus cavernosum electromyography, evoked cavernous activity and penile sympathetic skin responses for their accuracy in determining autonomic involvement in cases of erectile dysfunction. We evaluated 75 men with erectile dysfunction by corpus cavernosum electromyography, evoked cavernous activity and penile sympathetic skin response tests at our neurourology laboratory. The etiology of dysfunction was vascular, neurogenic, psychogenic or mixed based on a detailed medical and sexual history, physical examination, electrophysiological and laboratory studies, penile color Doppler ultrasonography, and cavernosography and/or cavernosometry. Autonomic involvement was clinically assessed by systemic findings, such as orthostatic hypotension, impaired gastrointestinal motility, sinus dysrhythmia and secretomotor changes. A concentric electromyography needle placed in the right cavernous body was used to record corpus cavernosum electromyography and evoked cavernous activity. The right median nerve was stimulated electrically with 13 to 16 mA. to determine evoked cavernous activity and the penile sympathetic skin response. The latter response was recorded with silver disc electrodes placed on the left cavernous body. All tests were performed using an electromyography/evoked potential machine. We determined the relationships among corpus cavernosum electromyography, evoked cavernous activity and penile sympathetic skin response tests in respect to etiological factors. The 56 patients with normal corpus cavernosum electromyography activity had also evoked cavernous activity and a penile sympathetic skin response except for 1 with no penile sympathetic skin response but evoked cavernous activity. None of these patients had autonomic neuropathy. Of the 19 patients without corpus cavernosum electromyography activity 11 had

  18. Creative activity and inclusion

    Directory of Open Access Journals (Sweden)

    Shemanov A.Yu.

    2013-09-01

    Full Text Available The aim of the article was to analyze the inclusion potential of art creative activity, namely of theatre performance, in people with disabilities. The article provides examples of disagreements in understanding the significance of these art activities for exercising the rights of people with disabilities to contribute to culture and art and some problems arising here. The conclusion is made that theatre art performed by people with disabilities is gradually changing its function: from being a means of self-affirmation to the determination of its specific place in overall theatre process. These changes confirm the inclusion potential of theatre art activity.

  19. PRCR Classes and Activities

    Data.gov (United States)

    Town of Cary, North Carolina — This data is specific to Parks and Recreation classes, workshops, and activities within the course catalog. It contains an entry for upcoming classes.*This data set...

  20. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Recommendations & Guidelines Fact Sheets & Infographics Social Media Tools Community Strategies Worksite Physical Activity Steps to Wellness Walkability ... Obesity , National Center for Chronic Disease Prevention and Health Promotion Email Recommend Tweet YouTube Instagram Listen Watch ...

  1. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... For this reason, some items on this page will be unavailable. For more information about this message, ... If you're doing vigorous-intensity activity, you will not be able to say more than a ...

  2. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... is not supported by your browser. For this reason, some items on this page will be unavailable. ... Intensity The level of effort required by a person to do an activity. When using relative intensity, ...

  3. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local Programs Measuring Physical Activity Intensity Recommend on Facebook Tweet ... Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local Programs File Formats Help: How do I view different ...

  4. Active Materials Characterization Laboratory

    National Research Council Canada - National Science Library

    Lagoudas, Dimitris

    2001-01-01

    The Active Materials Laboratory has recently acquired upgraded and new equipment made possible by the AFOSR in the form of a research grant as a part of the Defense University Research Instrumentation Program...

  5. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... to A to Z list Skip directly to navigation Skip directly to page options Skip directly to ... Statistics Facts About Physical Activity Data, Trends and Maps Surveillance Systems Resources & Publications Reports Adults Need More ...

  6. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Motivational Signs Installing Music Other Ideas to Consider Tracking Stair Usage Project Checklist CDC’s Example Related Resources ... Intensity The level of effort required by a person to do an activity. When using relative intensity, ...

  7. OTI Activity Database

    Data.gov (United States)

    US Agency for International Development — OTI's worldwide activity database is a simple and effective information system that serves as a program management, tracking, and reporting tool. In each country,...

  8. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... When using relative intensity, people pay attention to how physical activity affects their heart rate and breathing. ... Malnutrition State and Local Programs File Formats Help: How do I view different file formats (PDF, DOC, ...

  9. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... or vigorous-intensity based upon the amount of energy used by the body while doing the activity. Top of Page Moderate Intensity Walking briskly (3 miles per hour or faster, but ...

  10. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... updated: June 4, 2015 Content source: Division of Nutrition, Physical Activity, and Obesity , National Center for Chronic Disease Prevention and Health Promotion Email Recommend Tweet YouTube Instagram Listen Watch ...

  11. Bax activation by Bim?

    National Research Council Canada - National Science Library

    Czabotar, P E; Colman, P M; Huang, D C S

    2009-01-01

    .... Although some data support a role for certain BH3-only proteins, such as Bim or tBid, to directly activate Bax, others have led to the conclusion that BH3-only proteins act indirectly by antagonizing...

  12. Balance Food and Activity

    Science.gov (United States)

    ... News Features Spokespeople News Archive eNewsletters Calendar Balance Food and Activity What is Energy Balance? Energy is ... of calories just by breathing air and digesting food. You also burn a certain number of calories ( ...

  13. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Videos Glossary of Terms Personal Stories Harold, Age 7 Maria, Age 16 Alex, Age 32 Demetrise, Age ... aerobic activity, watch this video: Windows Media Player, 4:48 More videos Here are some ways to ...

  14. Physical activity: genes & health

    CERN Multimedia

    2002-01-01

    Carl Johan SUNDBERG is an Associate Professor in Physiology and Licenced Physician. His research focus is Molecular mechanisms involved in the adaptation of human skeletal muscle to physical activity.

  15. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... Sample Audit Glossary Selected References Discount Fitness Club Network Assessing Need and Interest Selecting a DFCN Promotion ... Physical Activity, and Obesity , National Center for Chronic Disease Prevention and Health Promotion Email Recommend Tweet YouTube ...

  16. Active at Any Size

    Science.gov (United States)

    ... outdoor biking, you may want to try a mountain bike. Mountain bikes have wider tires and are sturdier than ... or clipped to your clothing. Keeping an activity journal is another good way to help you stay ...

  17. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... 2015 Page last updated: June 4, 2015 Content source: Division of Nutrition, Physical Activity, and Obesity , National ... INFO U.S. Department of Health & Human Services HHS/Open USA.gov Top

  18. CDBG Public Improvements Activity

    Data.gov (United States)

    Department of Housing and Urban Development — CDBG activity related to public improvements, including senior centers, youth centers, parks, street improvements, water/sewer improvements, child care centers, fire...

  19. Lesion activity assessment

    DEFF Research Database (Denmark)

    Ekstrand, K R; Zero, D T; Martignon, S

    2009-01-01

    of predictors increases the accuracy of lesion activity prediction for both primary coronal and root lesions. Three surrogate methods have been used for evaluating lesion activity (construct validity); all have disadvantages. If construct validity is accepted as a 'gold standard', it is possible to assess......This chapter focusses on the probability of a caries lesion detected during a clinical examination being active (progressing) or arrested. Visual and tactile methods to assess primary coronal lesions and primary root lesions are considered. The evidence level is rated as low (R...... in response to cariogenic plaque as well as lesion arrest. Based on this understanding, different clinical scoring systems have been developed to assess the severity/depth and activity of lesions. A recent system has been devised by the International Caries Detection and Assessment System Committee...

  20. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... on this page will be unavailable. For more information about this message, please visit this page: About CDC.gov . ... Resources & Publications Reports Adults Need More Physical Activity ...

  1. Distributed Active Learning

    National Research Council Canada - National Science Library

    Shen, Pengcheng; Li, Chunguang; Zhang, Zhaoyang

    2016-01-01

    Active learning aims at obtaining high-accuracy models with as a few labeled data as possible, by iteratively and elaborately selecting most valuable data to query labels during the learning process...

  2. Benefits of Physical Activity

    Science.gov (United States)

    ... a bone-strengthening activity. Stretching helps improve your flexibility and your ability to fully move your joints. ... own, consider joining a support group. Many hospitals, workplaces, and community groups offer classes to help people ...

  3. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... per hour or faster, but not race-walking) Water aerobics Bicycling slower than 10 miles per hour ... 2015 Page last updated: June 4, 2015 Content source: Division of Nutrition, Physical Activity, and Obesity , National ...

  4. Local Worlds of Activation

    DEFF Research Database (Denmark)

    Jacobsson, Kerstin; Hollertz, Katarina; Garsten, Christina

    2017-01-01

    . This article studies local activation policy and practice in three Swedish municipalities, representing three distinct ‘local worlds of activation’. The analysis shows that policy orientations in the municipalities studied ranged from ‘work-first’ to ‘life-first’ approaches to activation. Governance...... of Coordination Unions, as multi-party collaborate organisational structures established for activation policy implementation for certain target groups. Thus, activation must be approached not as a fixed and universal policy for social inclusion, but as susceptible to local practice and hence open to influence...... from local politics, established local traditions, patterns of networking and modes of collaborating, as the notion of ‘local words of activation’ intends to capture....

  5. Tanzania - Kigoma Solar Activity

    Data.gov (United States)

    Millennium Challenge Corporation — The performance evaluation of the Kigoma solar activity was designed to answer questions about the implementation of the program and about outcomes that may have...

  6. Interactive Design Activism

    Science.gov (United States)

    Goulev, Petar; Farrer, Joan

    The following sections are included: * Introduction * Computers and Human Well-being * To Fuzzy or Yes (No)! * Interactive Design Activism * Sensing the Sun * Personalised Public Health Advice * Modifying Human Behaviour * Transdisciplinarity, Knowledge Transfer and Multi-domain

  7. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... CDC’s Example StairWELL Stairwell Appearance Motivational ... relative intensity, people pay attention to how physical activity affects their heart rate and breathing. The talk test ...

  8. Homebuyer Activities Report

    Data.gov (United States)

    Department of Housing and Urban Development — This monthly report is an Excel spreadsheet. PJs can use this report to view homebuyer activities with the 2012 or 2013 program year in IDIS that are in final draw,...

  9. Active Photonic Crystal Waveguides

    DEFF Research Database (Denmark)

    Ek, Sara

    due to photonic crystal dispersion. The observations are explained by the enhancement of net gain by light slow down. Another application based on active photonic crystal waveguides is micro lasers. Measurements on quantum dot micro laser cavities with different mirror configurations and photonic......This thesis deals with the fabrication and characterization of active photonic crystal waveguides, realized in III-V semiconductor material with embedded active layers. The platform offering active photonic crystal waveguides has many potential applications. One of these is a compact photonic...... crystal semiconductor optical amplier. As a step towards such a component, photonic crystal waveguides with a single quantum well, 10 quantum wells and three layers of quantum dots are fabricated and characterized. An experimental study of the amplied spontaneous emission and a implied transmission...

  10. Home Activities Reports

    Data.gov (United States)

    Department of Housing and Urban Development — This monthly report is an Excel spreadsheet, broken up by state. PJs can use this report to view activities with the 2012 or 2013 program year in IDIS, including;...

  11. Measuring Physical Activity Intensity

    Medline Plus

    Full Text Available ... 2015 Page last updated: June 4, 2015 Content source: Division of Nutrition, Physical Activity, and Obesity , National Center for Chronic Disease Prevention and Health Promotion Email Recommend Tweet YouTube Instagram ...

  12. Active Fire Mapping Program

    Science.gov (United States)

    Active Fire Mapping Program Current Large Incidents (Home) New Large Incidents Fire Detection Maps MODIS Satellite Imagery VIIRS Satellite Imagery Fire Detection GIS Data Fire Data in Google Earth ...

  13. Sedimentation of active particles

    OpenAIRE

    Vachier, Jérémy; Marco G. Mazza

    2017-01-01

    Active particles convert energy from chemical, biochemical, or other processes into motion. Their collective motion has attracted enormous interest on account of the technological applications of artificial and biological particles. By combining theoretical arguments, and molecular dynamics simulations we explore the collective behavior of active particles under a gravity field in three dimensions. Dilute systems exhibit sedimentation, which we study with two approaches. Firstly, we solve ana...

  14. Low activation ferritic alloys

    Science.gov (United States)

    Gelles, D.S.; Ghoniem, N.M.; Powell, R.W.

    1985-02-07

    Low activation ferritic alloys, specifically bainitic and martensitic stainless steels, are described for use in the production of structural components for nuclear fusion reactors. They are designed specifically to achieve low activation characteristics suitable for efficient waste disposal. The alloys essentially exclude molybdenum, nickel, nitrogen and niobium. Strength is achieved by substituting vanadium, tungsten, and/or tantalum in place of the usual molybdenum content in such alloys.

  15. RAVEN Quality Assurance Activities

    Energy Technology Data Exchange (ETDEWEB)

    Cogliati, Joshua Joseph [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2015-09-01

    This report discusses the quality assurance activities needed to raise the Quality Level of Risk Analysis in a Virtual Environment (RAVEN) from Quality Level 3 to Quality Level 2. This report also describes the general RAVEN quality assurance activities. For improving the quality, reviews of code changes have been instituted, more parts of testing have been automated, and improved packaging has been created. For upgrading the quality level, requirements have been created and the workflow has been improved.

  16. Activation Energy for Fission

    Energy Technology Data Exchange (ETDEWEB)

    Seaborg, Glenn T.

    1952-08-29

    The experimentally determined exponential dependence of spontaneous fission rate on Z{sup 2}/A has been used to derive an expression for the dependence of the fission activation energy on Z{sup 2}/A. This expression has been used to calculate the activation energy for slow neutron induced fission and photofission. The correlation with the experimental data on these types of fission seems to be quite good.

  17. ACTIVITY - BASED COSTING DESIGNING

    OpenAIRE

    Wioletta Skibiñska; Marta Kad³ubek

    2010-01-01

    The traditional costing system sometimes does not give accurate information about the consumption of different resources and the activities of the organisation. The activity-based costing system is an information-rich costing system which is more and more necessary for the success of many European companies. Base of designing and implementation of an ABC system in the enterprises are presented in the article.

  18. Psychomotor activities with seniors

    Directory of Open Access Journals (Sweden)

    Jitka Kopřivová

    2015-07-01

    Full Text Available BACKGROUND: Given that the population all over the world is aging, it is necessary to fi nd ways to help maintain or improve the quality of life of seniors. The main goal of this paper is to show how appropriate physical activity programs contribute to the improvement of the functionality and psychosocial wellbeing of seniors. We are particularly interested in the possibilities of preserving self-suffi ciency and self-service, independence and the ability to perform everyday activities. One of the most eff ective forms of physical activity is psychomotr activity.OBJECTIVE: The aim of our paper is to present basic information concerning the meaning and the application of the psychomotr activities in intervention movement programmes in order to improve seniors’ life quality.METHODS: We defi ne the term psychomotr activities according to Adamírová (1995 and Novotná (2010. In this paper we present some results of research that stress the positive eff ect of psychomotor exercises and games on the life satisfaction of the elderly (Stará 2011; Stará & Kopřivová, 2011.DESCRIPTION: According to the results of our research and practical experience gained from working with the elderly it is strongly recommended to include suitable psychomotor exercises and games focusing on the development of manual dexterity in training programs in order to improve the balance abilities and the psychosocial area. In terms of prevention, because of the growing number of neurological disorders at an old age it is appropriate to include psychomotor exercises that encourage the development of cognitive functions in the physical interventions.CONCLUSION: We were able to positively infl uence the emotional aspect from performing physical activities, to enhance self-esteem of the exercising subjects and to create new social relationships. Motion programs, which also included psychomotor exercises and games, had a positive eff ect on the physical assessment of the

  19. Youth physical activity resource use and activity measured by accelerometry.

    Science.gov (United States)

    Maslow, Andréa L; Colabianchi, Natalie

    2011-01-01

    To examine whether use of physical activity resources (eg, parks) was associated with daily physical activity measured by accelerometry. One hundred eleven adolescents completed a travel diary with concurrent accelerometry. The main exposure was self-reported use of a physical activity resource (none /1+ resources). The main outcomes were total minutes spent in daily (1) moderate-vigorous physical activity and (2) vigorous physical activity. Using a physical activity resource was significantly associated with total minutes in moderate-vigorous physical activity. African Americans and males had significantly greater moderate-vigorous physical activity. Results from this study support the development and use of physical activity resources.

  20. Youth Physical Activity Resources Use and Activity Measured by Accelerometry

    Science.gov (United States)

    Maslow, Andréa L.; Colabianchi, Natalie

    2014-01-01

    Objectives To examine whether utilization of physical activity resources (eg, parks) was associated with daily physical activity measured by accelerometry. Methods 111 adolescents completed a travel diary with concurrent accelerometry. The main exposure was self-reported utilization of a physical activity resource (none/1+ resources). The main outcomes were total minutes spent in daily 1) moderate-vigorous physical activity and 2) vigorous physical activity. Results Utilizing a physical activity resource was significantly associated with total minutes in moderate-vigorous physical activity. African-Americans and males had significantly greater moderate-vigorous physical activity. Conclusions Results from this study support the development and use of physical activity resources. PMID:21204684

  1. Walkability and Physical Activity

    Science.gov (United States)

    Reis, Rodrigo Siqueira; Hino, Adriano Akira Ferreira; Rech, Cassiano Ricardo; Kerr, Jacqueline; Hallal, Pedro Curi

    2013-01-01

    Background Evidence from developing countries is limited on how income level for a given neighborhood is related to physical activity among its residents. Purpose The goal of the study was to examine the association between walkability and physical activity outcomes, and the effect of income on the relationship between walkability and physical activity in adults. Methods The Spaces for Physical Activity in Adults Study (ESPACOS Project) took place in Curitiba, Brazil. Data were collected in 2010 in 32 census tracts selected to vary in income and walkability, as measured by GIS. Participants were 697 individuals aged 18–65 years (52.0% were women) randomly sampled from the selected neighborhoods. The International Physical Activity Questionnaire was used to measure physical activity. All analyses were conducted in 2012. Results The proportion of those who walked for transportation for ≥150 minutes/week was 21.1% in low-walkability areas, and ranged from 33.5% to 35.0% in high-walkability areas. A total of 12.6% of residents were found to walk for leisure for ≥150 minutes/week; this result did not vary across quadrants of walkability and income level. The prevalence of leisure-time moderate-to-vigorous physical activity (MVPA) was 7.1–10.5 percentage points higher in high-compared to low-walkability areas. After adjusting for all individual confounders, walkability showed an independent association with walking for transport (OR=2.10, 95% CI=1.31, 3.37, p=0.002) and leisure-time MVPA (OR=1.57; 95% CI=1.06, 2.32; p=0.024). Neighborhood income level was independently associated with leisure-time MVPA (OR=1.70; 95% CI=1.06, 2.74, p=0.029). No association was found between walkability and walking for leisure. No interaction was found between walkability and neighborhood income level. Conclusions This study, among adults living in Curitiba, Brazil, confirms findings from studies of high-income countries showing that walkability is positively associated with

  2. [Inflammasome: activation mechanisms].

    Science.gov (United States)

    Suárez, Raibel; Buelvas, Neudo

    2015-03-01

    Inflammation is a rapid biologic response of the immune system in vascular tissues, directed to eliminate stimuli capable of causing damage and begin the process of repair. The macromolecular complexes known as "inflammasomes" are formed by a receptor, either NOD (NLR) or ALR, the receptor absent in melanoma 2 (AIM2). In addition, the inflammasome is formed by the speck-like protein associated to apoptosis (ASC) and procaspase-1, that may be activated by variations in the ionic and intracellular and extracellular ATP concentrations; and the loss of stabilization of the fagolisosomme by internalization of insoluble crystals and redox mechanisms. As a result, there is activation of the molecular platform and the processing of inflammatory prointerleukins to their active forms. There are two modalities of activation of the inflammasome: canonical and non-canonical, both capable of generating effector responses. Recent data associate NLRP 3, IL-1β and IL-18 in the pathogenesis of a variety of diseases, including atherosclerosis, type II diabetes, hyperhomocysteinemia, gout, malaria and hypertension. The inflammasome cascade is emerging as a new chemotherapeutic target in these diseases. In this review we shall discuss the mechanisms of activation and regulation of the inflammasome that stimulate, modulate and resolve inflammation.

  3. Chromatin as active matter

    Science.gov (United States)

    Agrawal, Ankit; Ganai, Nirmalendu; Sengupta, Surajit; Menon, Gautam I.

    2017-01-01

    Active matter models describe a number of biophysical phenomena at the cell and tissue scale. Such models explore the macroscopic consequences of driving specific soft condensed matter systems of biological relevance out of equilibrium through ‘active’ processes. Here, we describe how active matter models can be used to study the large-scale properties of chromosomes contained within the nuclei of human cells in interphase. We show that polymer models for chromosomes that incorporate inhomogeneous activity reproduce many general, yet little understood, features of large-scale nuclear architecture. These include: (i) the spatial separation of gene-rich, low-density euchromatin, predominantly found towards the centre of the nucleus, vis a vis. gene-poor, denser heterochromatin, typically enriched in proximity to the nuclear periphery, (ii) the differential positioning of individual gene-rich and gene-poor chromosomes, (iii) the formation of chromosome territories, as well as (iv), the weak size-dependence of the positions of individual chromosome centres-of-mass relative to the nuclear centre that is seen in some cell types. Such structuring is induced purely by the combination of activity and confinement and is absent in thermal equilibrium. We systematically explore active matter models for chromosomes, discussing how our model can be generalized to study variations in chromosome positioning across different cell types. The approach and model we outline here represent a preliminary attempt towards a quantitative, first-principles description of the large-scale architecture of the cell nucleus.

  4. Shock activation of catalysts

    Science.gov (United States)

    Graham, R. A.; Morosin, B.; Richards, P. M.; Stohl, F. V.; Granoff, B.

    1981-02-01

    Scientists in the Soviet Union have demonstrated that high pressure shock-wave loading can cause significant improvement in the performance of catalysts. This increased catalytic activity is apparently the result of the shock-induced defects, especially vacancies, which act to facilitate atomic migration. We have carried out shock activation experiments on a coal-derived pyrite which has been previously used as a catalyst in coal liquefaction studies. The pyrite powder was packed to a density of about 2.0 Mg/m3 in a copper capsule and explosively loaded to a pressure of about 15 GPa in the copper. The starting and shock-activated samples were analyzed by x-ray diffraction and magnetization measurements. The diffraction patterns of the shock-activated samples were dominated by broadened pyrite lines indicative of a significant increase in crystal defects. The diffraction patterns also showed the presence of pyrrhotite (Fe1-xS) in quantities of a few percent. An iron carbide found in the shocked material was apparently formed from carbon originating from either the calcite or organic impurities in the starting material. Magnetic properties of the sample were found to be substantially changed by the shock loading. The study has demonstrated that shock loading can significantly alter the crystalline order of pyrite and produce measurable quantities of pyrrhotite. The effects of shock-activated pyrite on the liquefaction of coal are being assessed by means by tubing reactor experiments.

  5. Parsing Heterogeneous Striatal Activity

    Directory of Open Access Journals (Sweden)

    Kae Nakamura

    2017-05-01

    Full Text Available The striatum is an input channel of the basal ganglia and is well known to be involved in reward-based decision making and learning. At the macroscopic level, the striatum has been postulated to contain parallel functional modules, each of which includes neurons that perform similar computations to support selection of appropriate actions for different task contexts. At the single-neuron level, however, recent studies in monkeys and rodents have revealed heterogeneity in neuronal activity even within restricted modules of the striatum. Looking for generality in the complex striatal activity patterns, here we briefly survey several types of striatal activity, focusing on their usefulness for mediating behaviors. In particular, we focus on two types of behavioral tasks: reward-based tasks that use salient sensory cues and manipulate outcomes associated with the cues; and perceptual decision tasks that manipulate the quality of noisy sensory cues and associate all correct decisions with the same outcome. Guided by previous insights on the modular organization and general selection-related functions of the basal ganglia, we relate striatal activity patterns on these tasks to two types of computations: implementation of selection and evaluation. We suggest that a parsing with the selection/evaluation categories encourages a focus on the functional commonalities revealed by studies with different animal models and behavioral tasks, instead of a focus on aspects of striatal activity that may be specific to a particular task setting. We then highlight several questions in the selection-evaluation framework for future explorations.

  6. Active Flows on Trees

    Science.gov (United States)

    Forrow, Aden; Woodhouse, Francis; Dunkel, Joern

    Coherent, large scale dynamics in many nonequilibrium physical, biological, or information transport networks are driven by small-scale local energy input. We introduce and explore a generic model for compressible active flows on tree networks. In contrast to thermally-driven systems, active friction selects discrete states with only a small number of oscillation modes activated at distinct fixed amplitudes. This state selection interacts with graph topology to produce different localized dynamical time scales in separate regions of large networks. Using perturbation theory, we systematically predict the stationary states of noisy networks and find good agreement with a Bayesian state estimation based on a hidden Markov model applied to simulated time series data on binary trees. While the number of stable states per tree scales exponentially with the number of edges, the mean number of activated modes in each state averages 1 / 4 the number of edges. More broadly, these results suggest that the macroscopic response of active networks, from actomyosin force networks in cells to cytoplasmic flows, can be dominated by a significantly reduced number of modes, in stark contrast to energy equipartition in thermal equilibrium systems.

  7. Active noise control primer

    CERN Document Server

    Snyder, Scott D

    2000-01-01

    Active noise control - the reduction of noise by generating an acoustic signal that actively interferes with the noise - has become an active area of basic research and engineering applications. The aim of this book is to present all of the basic knowledge one needs for assessing how useful active noise control will be for a given problem and then to provide some guidance for designing, setting up, and tuning an active noise-control system. Written for students who have no prior knowledge of acoustics, signal processing, or noise control but who do have a reasonable grasp of basic physics and mathematics, the book is short and descriptive. It leaves for more advanced texts or research monographs all mathematical details and proofs concerning vibrations, signal processing and the like. The book can thus be used in independent study, in a classroom with laboratories, or in conjunction with a kit for experiment or demonstration. Topics covered include: basic acoustics; human perception and sound; sound intensity...

  8. Factors affecting aspartase activity.

    Science.gov (United States)

    DEPUE, R H; MOAT, A G

    1961-09-01

    Depue, Robert H. (Hahnemann Medical College, Philadelphia), and Albert G. Moat. Factors affecting aspartase activity. J. Bacteriol. 82:383-386. 1961.-Cells of Escherichia coli grown in a glucose-mineral salts medium contain about one-fifth the amount of aspartase activity observed in cells grown in a yeast extract-peptone medium. The aspartase activity of the cells grown in glucose-salts medium would appear to be too low to provide a mechanism for synthesis of amino groups. Aspartase was purified approximately eightfold by ammonium sulfate precipitation and column chromatography of cell-free extracts. The purified preparation was specific for l-aspartic acid and contained no fumarase activity. A divalent metal ion requirement was demonstrated, this requirement being satisfied by cobaltous or manganous ions. The enzyme activity was found to be dependent upon free sulfhydryl groups. Biotin did not appear to be directly involved in the aspartase reaction since high concentrations of avidin did not alter the reaction rate. The Michaelis constant for aspartase with aspartic acid as substrate was determined to be 0.033 m.

  9. Plasminogen activation and cancer

    DEFF Research Database (Denmark)

    Danø, Keld; Behrendt, Niels; Høyer-Hansen, Gunilla

    2005-01-01

    Breakdown of the extracellular matrix is crucial for cancer invasion and metastasis. It is accomplished by the concerted action of several proteases, including the serine protease plasmin and a number of matrix metalloproteases. The activity of each of these proteases is regulated by an array...... of activators, inhibitors and cellular receptors. Thus, the generation of plasmin involves the pro-enzyme plasminogen, the urokinase type plasminogen activator uPA and its pro-enzyme pro-uPA, the uPA inhibitor PAI-1, the cell surface uPA receptor uPAR, and the plasmin inhibitor alpha(2)-antiplasmin. Furthermore......, the regulation of extracellular proteolysis in cancer involves a complex interplay between cancer cells and non-malignant stromal cells in the expression of the molecular components involved. For some types of cancer, this cellular interplay mimics that observed in the tissue of origin during non...

  10. Immunomodulating activity of pidotimod.

    Science.gov (United States)

    Migliorati, G; Nicoletti, I; Riccardi, C

    1994-12-01

    Experiments were performed to analyze the effect of the immunomodulating agent pidotimod ((R)-3-[(S)-(5-oxo-2-pyrrolidinyl) carbonyl]-thiazolidine-4-carboxylic acid, PGT/1A, CAS 121808-62-6) on the mouse splenic proliferative response to Con-A and IL-2, natural killer (NK) cell activity and thymocyte apoptosis. The results indicate that in vivo treatment with pidotimod (200 mg/kg i.p. for 5 days) causes a significant increase in the proliferative response to mitogens (including Con-A and IL-2) and the cytotoxic activity mediated by NK cells. Pidotimod inhibits in vitro thymocyte apoptosis caused by other inducing agents such as protein kinase C activator 12-O-tetradecanoyl-phorbol-13-acetate, Ca(++)-ionophore A23187, genistein and interleukin-2 (IL-2).

  11. Correlates of physical activity

    DEFF Research Database (Denmark)

    Bauman, Adrian E; Reis, Rodrigo S; Sallis, James F

    2012-01-01

    that age, sex, health status, self-efficacy, and motivation are associated with physical activity. Ecological models take a broad view of health behaviour causation, with the social and physical environment included as contributors to physical inactivity, particularly those outside the health sector......Physical inactivity is an important contributor to non-communicable diseases in countries of high income, and increasingly so in those of low and middle income. Understanding why people are physically active or inactive contributes to evidence-based planning of public health interventions, because......, such as urban planning, transportation systems, and parks and trails. New areas of determinants research have identified genetic factors contributing to the propensity to be physically active, and evolutionary factors and obesity that might predispose to inactivity, and have explored the longitudinal tracking...

  12. Postsplenectomy splenic activity.

    Science.gov (United States)

    Orda, R; Barak, J; Baron, J; Spirer, Z; Wiznitzer, T

    1981-01-01

    Evidence of recurring activity of splenic tissue was investigated in patients who had undergone splenectomies. Methods included technetium 99m sulfur colloid scan, serum tuftsin assay, serum immunoglobulin concentration, blood cell counts, and search for Howell-Jolly bodies. Positive scans were observed together with normal levels of tuftsin in 54% of the patients. In 46% of the patients, no splenic activity was detected by scanning and low levels of tuftsin were noticed. The difference in tuftsin levels between the two groups was statistically significant. Howell-Jolly bodies and decreased serum levels of IgM featured all patients. The possible application of combined splenic scan and tuftsin assessment for screening recurring splenic activity in the postsplenectomy population at great risk is suggested. Images Fig. 1. Fig. 2. PMID:7305494

  13. Physical activity and osteoarthritis

    DEFF Research Database (Denmark)

    Gates, L S; Leyland, K M; Sheard, S

    2017-01-01

    Physical activity (PA) is increasingly recognised as an important factor within studies of osteoarthritis (OA). However, subjective methods used to assess PA are highly variable and have not been developed for use within studies of OA, which creates difficulties when comparing and interpreting PA...... established via an international expert consensus meeting and modified Delphi exercise using a geographically diverse committee selected on the basis of individual expertise in physical activity, exercise medicine, and OA. Agreement was met for all aims of study: (1) The use of Metabolic Equivalent of Task...

  14. Effects of Activating Schoolyards

    DEFF Research Database (Denmark)

    Pawlowski, Charlotte Skau; Schipperijn, Jasper; Andersen, Henriette Bondo

    have to support the older children’s recess physical activity on an organisational level by encourage them to use the schoolyard and renewing schoolyard areas close to their classrooms. This follow-up study of children’s perception of the renewed schoolyards can aid development of future schoolyard...... access to the renovated areas for older children and allowed them to leave the school area during recess. Furthermore, most of the children felt that the renewed schoolyard areas were far from their classrooms. CONCLUSIONS: Renewing the schoolyard is not enough to stimulate physical activity. Schools...

  15. Bumblebee vibration activated foraging

    OpenAIRE

    Su, Dan Kuan-Nien

    2009-01-01

    The ability use vibrational signals to activate nestmate foraging is found in the highly social bees, stingless bees and honey bees, and has been hypothesized to exist in the closely related, primitively eusocial bumble bees. We provide the first strong and direct evidence that this is correct. Inside the nest, bumble bee foragers produce brief bursts of vibration (foraging activation pulses) at 594.5 Hz for 63±26 ms (velocityRMS=0.46±0.02mm/s, forceRMS=0.8±0.2 mN. Production of these vibrati...

  16. Active registration models

    Science.gov (United States)

    Marstal, Kasper; Klein, Stefan

    2017-02-01

    We present the Active Registration Model (ARM) that couples medical image registration with regularization using a statistical model of intensity. Inspired by Active Appearance Models (AAMs), the statistical model is embedded in the registration procedure as a regularization term that penalize differences between a target image and a synthesized model reconstruction of that image. We demonstrate that the method generalizes AAMs to 3D images, many different transformation models, and many different gradient descent optimization methods. The method is validated on magnetic resonance images of human brains.

  17. Physical Activity and Health: The Benefits of Physical Activity

    Science.gov (United States)

    ... State and Local Programs Related Topics Diabetes Nutrition Physical Activity and Health Recommend on Facebook Tweet Share Compartir ... Your Chances of Living Longer The Benefits of Physical Activity Regular physical activity is one of the most ...

  18. Dynamic activity-related incentives for physical activity

    OpenAIRE

    Schüler, Julia; Brunner, Sibylle

    2012-01-01

    The present studies adopted the theoretical framework of activity- and purpose-related incentives (Rheinberg, 2008) to explain the maintenance of physical activity. We hypothesized that activity-related incentives (e.g., “fun”) increase more than purpose-related incentives (e.g., “health”) between the initiation and maintenance phase of physical activity. Additionally, change in activity-related incentives was hypothesized to be a better predictor of maintenance of physical activity than chan...

  19. Dimensions of network activity

    NARCIS (Netherlands)

    Torenvlied, R.; Akkerman, A.; Meier, K.; O'Toole, L.

    2013-01-01

    Studies in public management show that agencies draw different types of support from different actors and organizations in their environment. If this is true, we would expect that managers differentiate their networking activity toward different types of external actors and organizations. However,

  20. Institutional investor activism : Introduction

    NARCIS (Netherlands)

    Mc Cahery, Joseph; Bratton, William; Bratton, William; McCahery, Joseph A.

    2015-01-01

    The increase in institutional ownership of recent decades has been accompanied by an enhanced role played by institutions in monitoring companies’ corporate governance behaviour. Activist hedge funds and private equity firms have achieved a degree of success in actively shaping the business plans of