Ciencias,UNAM

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  • First report on the occurrence of microcystins in planktonic cyanobacteria from Central Mexico
    Vasconcelos, V; Martins, A; Vale, M; Antunes, A; Azevedo, J; Welker, M; Montejano, G; López, O (2010)
    Although toxic cyanobacteria are commonly described worldwide, only one recent paper on the toxicity of cyanobacteria in Mexico has been published reporting the occurrence of cylindrospermopsin and saxitoxins. Microcystins ...
  • ON DENSITY OF PERIODIC POINTS FOR INDUCED HYPERSPACE MAPS
    Mendez, H (2010)
    Let X be a continuum and 2(X) be the hyperspace of all nonempty closed subsets of X endowed with the Hausdorff metric. It is known that for each continuous map f : X -> X the density of periodic points of the induced map ...
  • The field high-amplitude SX Phe variable BL Cam: results from a multisite photometric campaign
    Fauvaud, S; Sareyan, JP; Ribas, I; Lampens, P; Klingenberg, G; Farrell, JA; Fumagalli, F; Simonetti, JH; Wolf, M; Santacana, G; Zhou, AY; Michel, R; Fox-Machado, L; Alvarez, M; Nava-Vega, A; Casanova, VM; Aceituno, FJ; Scheggia, I; Rives, JJ; Hintz, EG; Van Cauteren, P; Helvaci, M; Yesilyaprak, C; Graham, KA; Kral, L; Kocian, R; Kucakova, H; Fauvaud, M; Granslo, BH; Michelet, J; Nicholson, MP; Vugnon, JM; Kotkova, L; Truparova, K; Ulusoy, C; Yasarsoy, B; Avdibegovic, A; Blazek, M; Kliner, J; Zasche, P; Bartosikova, S; Vilasek, M; Trondal, O; Van Den Abbeel, F; Behrend, R; Wucher, H; Rodríguez, E; López-González, MJ (2010)
    Context. Short-period high-amplitude pulsating stars of Population I (delta Sct stars) and II (SX Phe variables) exist in the lower part of the classical (Cepheid) instability strip. Most of them have very simple pulsational ...
  • spatial and temporal variation of the diversity ants in the botanic garden from zapotitlan de las salinas valley, puebla
    Guzman-Mendoza, R; Herrera-Fuentes, MDC; Castaño-Meneses, G. (2010)
    The knowledge about ants of arid zones of Mexico is very poor. For this reason we assessed the biodiversity of this taxon in 2 sites with different vegetation structure. Ten pitfall traps were placed in each site, and 2 ...
  • Shear and flexoelectric deformation effects on the dynamic structure factor of a nematic liquid crystal
    Hijar, H; Rodríguez, RF (2010)
    We use a fluctuating hydrodynamic description to calculate the orientation (director) correlation function of hydrodynamic fluctuations for a nematic liquid crystal in a non-equilibrium steady state (NESS). This state is ...
  • Segmental Motions of Rat Thymidylate Synthase Leading to Half-The-Sites Behavior
    Swiniarska, M; Les, A; Rode, W; Ciesla, J; Millan-Pacheco, C; Blake, IO; Pastor, N (2010)
    Thymidylate synthase (TS) is a homodimeric enzyme with two equivalent active sites composed of residues from both subunits. Despite the structural symmetry of the enzyme, certain experimental results are consistent with ...
  • Counterpoint in 2k-tone equal temperament
    Agustin-Aquino, OA (2009)
    This paper presents a brief overview of Mazzola's counterpoint theory for the 12-tone equal temperament [G. Mazzola, The Topos of Music, Birkhauser-Verlag, Basel, 2002]. A similar theory for a 2k-tone equal temperament is ...
  • Aging and Interstitial Lung Diseases: Unraveling an Old Forgotten Player in the Pathogenesis of Lung Fibrosis
    Selman, M; Rojas, M; Mora, AL; Pardo-Cemo, Annie (2010)
    Aging is a natural process characterized by a progressive functional impairment and reduced capacity to respond adaptively to environmental stimuli. Aging is associated with increased susceptibility to a variety of chronic ...
  • A NEW EARLY CAMPANIAN RUDIST FAUNA FROM SAN LUIS POTOSI IN MEXICO AND ITS TAXONOMIC AND STRATIGRAPHIC SIGNIFICANCE
    Pons, JM; Vicens, E; Pichardo, Y; Aguilar, J; Oviedo, A; Alencaster, G; García-Barrera, P (2010)
    up to now it and Santonian and Turonian units have been mapped as the El Abra Formation in most available geological maps. Recognition of the successive carbonate platform intervals, between El Abra and Cardenas formations, ...
  • Who is whistling? Localizing and identifying phonating dolphins in captivity
    Bazua-Duran, C; López-Rivas, RM (2010)
    Acoustic communication through whistles is well developed in dolphins. However, little is known on how dolphins are using whistles because localizing the sound source is not an easy task. In the present study, the hyperbola ...
  • Current distribution and predicted geographic expansion of the Rufous-backed Robin in Mexico: a fading endemism?
    Martínez-Morales, MA; Zuria, I; Chapa-Vargas, L; MacGregor-Fors, I; Ortega-Alvarez, R; Romero-Aguila, E; Carbo, P (2010)
    Aim The Rufous-backed Robin Turdus rufopalliatus is a bird endemic to the Pacific slope of Mexico. The species recently established populations in several localities in the Mexican Central Highlands. Based on available ...
  • Characterization of the CaCO3 biomineral in coralline red algae (Corallinales) from the Pacific coast of Mexico
    Fragoso, D; Ramirez-Cahero, F; Heredia, A; Aguilar-Franco, M; Bucio, L; Basiuk, VA; Rodríguez-Galvan, A; Hernández-Reyes, R; Rodríguez, D (2010)
    Coralline red algae assimilate HCO3 to precipitate CaCO3 in their tissues in the form of calcite or aragonite. A characterization of the biomolecular content and the crystalline structure of the biomineral of coralline red ...
  • Flow of linear molecules through a 4:1:4 contraction-expansion using non-equilibrium molecular dynamics: Extensional rheology and pressure drop
    Castillo-Tejas, J; Rojas-Morales, A; Alvarado, JFJ; Luna-Barcenas, G; Bautista, F; Manero, O; López-Medina, F (2009)
    In this work, non-equilibrium molecular dynamics simulations are used to generate the flow of linear polymer chains (monomer-springs with FENE potential) and a Lennard-Jones fluid (Newtonian fluid) through a con ...
  • euglenophytes from lake chignahuapan, mexico
    Valadez, F; Rosiles-González, G; Carmona-Jiménez, J (2010)
    This study revelead the presence of several euglenophyte taxa (Euglenophyta) in Lake Chignahupan, in the Upper Lerma Basin (Mexico). A total of 21 taxa were identified, 10 belonging to the genus Phacus, 5 to Lepocinclis, ...
  • shell utilization by the hermit crab clibanarius antillensis stimpson 1862 (crustacea anomura) in intertidal rocky pools at montepio, veracruz, mexico
    Arguelles-Tico, A; Alvarez, F; Alcaraz, G (2010)
    The gastropod shell utilization pattern of the hermit crab Clibanarius antillensis Stimpson 1862 was studied at Montepio, Veracruz, Mexico. Specimens were collected along the intertidal zone. All gastropod shells were ...
  • Delineation of biogeomorphic land units across a tropical natural and humanized terrain in Los Tuxtlas, Veracruz, Mexico
    Alvarez, R; Dirzo, R; Ortiz, MA; Eng, MM; García-Aguirre, MC (2010)
    This paper analyzes landscape in a rainforest region integrating geomorphologic and ecosystem analysis methods. Major landscape elements (geology, geomorphology, soils, vegetation and land use) were mapped as biogeomorphic ...
  • Variable Thermal Conductivity and Perforation Effects on a Heat-Conducting Plate
    Cajas, JC; Lizardi, J; Treviño, C (2010)
  • Lactoferrin increases both resistance to Salmonella typhimurium infection and the production of antibodies in mice
    Drago-Serrano, ME; Rivera-Aguilar, V; Resendiz-Albor, AA; Campos-Rodríguez, R (2010)
    Lactoferrin (Lf) is a multifunctional iron-binding glycoprotein with antibacterial and immunomodulatory activities The antibacterial influence of orally administered bovine Lf (bLf) against murine infection caused by ...
  • REVIEW OF PARTICLE PHYSICS
    Nakamura, K.; Hagiwara, K.; Hikasa, K.; Murayama, H.; Tanabashi, M.; Watari, T.; Amsler, C.; Antonelli, M.; Asner, DM; Baer, H.; Band, HR; Barnett, RM; Basaglia, T; Bergren, E; Beringer, J; Bernardi, G; Bertl, W; Bichsel, H; Biebel, O; Blucher, E; Blusk, S; Cahn, RN; Carena, M; Ceccucci, A; Chakraborty, D; Chen, MC; Chivukula, RS; Cowan, G; Dahl, O; D'Ambrosio, G; Damour, T; de Florian, D; de Gouvea, A; DeGrand, T; Dissertori, G; Dobrescu, B; Doser, M; Drees, M; Edwards, DA; Eidelman, S; Erler, J; Ezhela, VV; Fetscher, W; Fields, BD; Foster, B; Gaisser, TK; Garren, L; Gerber, HJ; Gerbier, G; Gherghetta, T; Giudice, CF; Golwala, S; Goodman, M; Grab, C; Gritsan, AV; Grivaz, JF; Groom, DE; Grunewald, M; Gurtu, A; Gutsche, T; Haber, HE; Hagmann, C; Hayes, KG; Heffner, M; Heltsley, B; Hocker, A; Holder, J; Huston, J; Jackson, JD; Johnson, KF; Junk, T; Karle, A; Karlen, D; Kayser, B; Kirkby, D; Klein, SR; Kolda, C; Kowalewski, RV; Krusche, B; Kuyanov, YV; Kwon, Y; Lahav, O; Langacker, P; Liddle, A; Ligeti, Z; Lin, CJ; Liss, TM; Littenberg, L; Lugovsky, KS; Lugovsky, SB; Lys, J; Mahlke, H; Mannel, T; Manohar, AV; Marciano, WJ; Martin, AD; Masoni, A; Milstead, D; Miquel, R; Monig, K; Narain, M; Nason, P; Navas, S; Nevski, P; Nir, Y; Olive, KA; Pape, L; Patrignani, C; Peacock, JA; Petcov, ST; Piepke, A; Punzi, G; Quadt, A; Raby, S; Raffelt, G; Ratcliff, BN; Richardson, P; Roesler, S; Rolli, S; Romaniouk, A; Rosenberg, LJ; Rosner, JL; Sachrajda, CT; Sakai, Y; Salam, GP; Sarkar, S; Sauli, F; Schneider, O; Scholberg, K; Scott, D; Seligman, WG; Shaevitz, MH; Silari, M; Sjostrand, T; Smith, JG; Smoot, GF; Spanier, S; Spieler, H; Stahl, A; Stanev, T; Stone, SL; Sumiyoshi, T; Syphers, MJ; Terning, J; Titov, M; Tkachenko, NP; Tornqvist, NA; Tovey, D; Trippe, TG; Valencia, G; van Bibber, K; Venanzoni, G; Vincter, MG; Vogel, P; Vogt, A; Walkowiak, W; Walter, CW; Ward, DR; Webber, BR; Weiglein, G; Weinberg, EJ; Wells, JD; Wheeler, A; Wiencke, LR; Wohl, CG; Wolfenstein, L; Womersley, J; Woody, CL; Workman, RL; Yamamoto, A; Yao, WM; Zenin, OV; Zhang, J; Zhu, RY; Zyla, PA; Harper, G; Lugovsky, VS; Schaffner, P; Hernández-Rey, JJ
    This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2158 new measurements from 551 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, ...
  • Biomonitoring of metal in children living in a mine tailings zone in Southern Mexico: A pilot study
    Moreno, ME; Acosta-Saavedra, LC; Meza-Figueroa, D; Vera, E; Cebrian, ME; Ostrosky-Wegman, P; Calderon-Aranda, ES (2010)
    Accumulation of metals in soil represents a health risk for individuals living near mining areas, especially for children who have a higher susceptibility to metal related diseases. The Taxco mining district in Southern ...