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Sample records for choromytilus chorus molina

  1. Reestablecimiento de Choromytilus chorus (Molina, 1782) (Bivalvia: Mytilidae) en el norte de Chile Reestablishment of Choromytilus chorus (Molina, 1782) (Bivalvia: Mytilidae) in northern Chile

    OpenAIRE

    Miguel Avendaño; Marcela Cantillánez

    2011-01-01

    Hasta fines del siglo pasado no existían registros de la presencia de Choromytilus chorus al norte de los 23°S, pese a antecedentes que señalaban su existencia en épocas pasadas. Ciertos cambios relacionados con las masas de agua costeras de esta zona, habrían generado la ausencia o escasez que presentaba el entorno costero actual. Sin embargo, hace una década atrás, su presencia en el norte de Chile, comienza a tener connotación pesquera. En el presente trabajo se confirma su reestablecimien...

  2. Reestablecimiento de Choromytilus chorus (Molina, 1782 (Bivalvia: Mytilidae en el norte de Chile Reestablishment of Choromytilus chorus (Molina, 1782 (Bivalvia: Mytilidae in northern Chile

    Directory of Open Access Journals (Sweden)

    Miguel Avendaño

    2011-07-01

    Full Text Available Hasta fines del siglo pasado no existían registros de la presencia de Choromytilus chorus al norte de los 23°S, pese a antecedentes que señalaban su existencia en épocas pasadas. Ciertos cambios relacionados con las masas de agua costeras de esta zona, habrían generado la ausencia o escasez que presentaba el entorno costero actual. Sin embargo, hace una década atrás, su presencia en el norte de Chile, comienza a tener connotación pesquera. En el presente trabajo se confirma su reestablecimiento en las regiones de Antofagasta y Tarapacá, mediante prospecciones realizadas en seis lugares donde se registró su presencia, así como mediante la captación de semilla en colectores suspendidos. Se indica interacción con Aulacomya ater, a la cual ha desplazado a estratos más profundos, mientras que su reestablecimiento, iniciado en las regiones de Atacama y Antofagasta, y que se amplió posteriormente a la región de Tarapacá; permite postular la hipótesis que la dinámica de estos bancos, respondería a una estructura de metapoblación, dado el sistema de corrientes y vientos que predominan en la zona norte, permitiendo la advección larval de poblaciones existentes en la región de Coquimbo.Despite indications of its presence in past ages, until the end of the last century, no records showed Choromytilus chorus north of 23°S. Certain changes related to coastal water masses in the zone could be responsible for the present lack or scarcity of this species in the coastal area. However, a decade ago, this species appeared in northern Chile in the context of fisheries. This study confirms the re-establishment of C. chorus in the Antofagasta and Tarapaca regions through surveys at six sites where the species had been registered and spat collection using suspended collectors. This species has interacted with Aulacomya ater, displacing it towards deeper habitats. The re-establishment of C. chorus began in the Atacama and Antofagasta regions and

  3. Reestablecimiento de Choromytilus chorus (Molina, 1782) (Bivalvia: Mytilidae) en el norte de Chile

    OpenAIRE

    Avendaño,Miguel; Cantillánez,Marcela

    2011-01-01

    Hasta fines del siglo pasado no existían registros de la presencia de Choromytilus chorus al norte de los 23°S, pese a antecedentes que señalaban su existencia en épocas pasadas. Ciertos cambios relacionados con las masas de agua costeras de esta zona, habrían generado la ausencia o escasez que presentaba el entorno costero actual. Sin embargo, hace una década atrás, su presencia en el norte de Chile, comienza a tener connotación pesquera. En el presente trabajo se confirma su reestablecimien...

  4. The adhesive protein of Choromytilus chorus (Molina, 1782) and Aulacomya ater (Molina, 1782): a proline-rich and a glycine-rich polyphenolic protein.

    Science.gov (United States)

    Burzio, L A; Saéz, C; Pardo, J; Waite, J H; Burzio, L O

    2000-06-15

    The adhesive polyphenolic proteins from Aulacomya ater and Choromytilus chorus with apparent molecular masses of 135000 and 105000, respectively, were digested with trypsin and the peptides produced resolved by reversed phase liquid chromatography. About 5 and 12 major peptides were obtained from the protein of A. ater and C. chorus, respectively. The major peptides were purified by reverse-phase chromatography and the amino acid sequence indicates that both polyphenolic proteins consisted of repeated sequence motifs in their primary structure. The major peptides of A. ater contain seven amino acids corresponding to the consensus sequence AGYGGXK, whereas the tyrosine was always found as 3, 4-dihydroxyphenylalanine (Dopa), the X residue in position 6 was either valine, leucine or isoleucine, and the carboxy terminal was either lysine or hydroxylysine. On the other hand, the major peptides of C. chorus ranged in size from 6 to 21 amino acids and the majority correspond to the consensus sequence AKPSKYPTGYKPPVK. Both proteins differ markedly in the sequence of their tryptic peptides, but they share the common characteristics of other adhesive proteins in having a tandem sequence repeat in their primary structure.

  5. Organic pollutant burden of the giant mussels Choromytilus chorus from the south-central Chilean coast.

    Science.gov (United States)

    Toro, Beatriz; Palma-Fleming, Hernán; Navarro, Jorge M

    2004-04-01

    A comparative quantitative analysis was made on the contents of organochlorines (OCh) and polycyclic aromatic hydrocarbons (PAH) in tissues of the giant mussel Choromytilus chorus from three bays in south-central Chile exposed to various degrees of pollutant input. Mussels from the three bays contained levels of OCh near the detection limits of method, with a tendency to be slightly higher in the polluted bay (San Vicente) than in the other bays (Corral and Yaldad). PAH levels and types in Corral and Yaldad were well below of carcinogenicity permitted in mussels for human consumption.

  6. Relationship between bioenergetics responses and organic pollutants in the giant mussel, Choromytilus chorus (Mollusca: Mytilidae).

    Science.gov (United States)

    Toro, Beatriz; Navarro, Jorge M; Palma-Fleming, Hernán

    2003-05-08

    Samples of Choromytilus chorus (giant mussel) were collected at three sampling stations exposed to different degrees of pollution along the south-central portion of the Chilean coast in spring 1998 and summer 1999. Measurements were carried out on clearance rate, absorption efficiency, and oxygen consumption of the mussels under controlled laboratory conditions, and related to analytical data on organic pollutants in their tissues. Scope for growth (SFG) was employed as a physiological index to evaluate stress produced by pollutants existing at each sampling site. Individuals from San Vicente bay (highly polluted) showed negative SFG values in spring (-4.6 J/h per g) and summer (-3.5 J/h per g). These results indicated severe stress related to the accumulation of toxic compounds in their tissues. Specimens from Corral bay (medium level of pollution) gave a SFG of 15.5 J/h per g in spring and 6.5 J/h per g in summer, while those from Yaldad bay (low pollution) presented an inverse situation was observed with SFG values of 6.2 J/h per g in spring which was lower than the summer value of 25.7 J/h per g. There was a significant negative correlation between the SFG of the different populations of C. chorus and the concentrations of organochlorines (OChs) and polynuclear aromatic hydrocarbons (PAHs) in their tissues.

  7. Use of clearance rate in Choromytilus chorus (Bivalvia: Mytilidae) as a non-destructive biomarker of aquatic pollution El uso de la tasa de aclaramiento en Choromytilus chorus (Bivalvia: Mytilidae) como biomarcador no destructivo de la polución acuática

    OpenAIRE

    BEATRIZ TORO; Jorge M Navarro; HERNÁN PALMA-FLEMING

    2003-01-01

    Reduction in clearance rate was observed in the mussel Choromytilus chorus in relation to the degree of environmental pollution. Three sampling sites included the polluted San Vicente Bay, middling polluted Corral Bay, and weakly polluted Yaldad Bay in southern Chile. Pollution levels were estimated by quantitative analysis of polynuclear aromatic hydrocarbons (PAHs) in mussel tissue from the three sites. Mussels from San Vicente showed lowest clearance rates and highest PAHs levels in both s...

  8. Use of clearance rate in Choromytilus chorus (Bivalvia: Mytilidae as a non-destructive biomarker of aquatic pollution El uso de la tasa de aclaramiento en Choromytilus chorus (Bivalvia: Mytilidae como biomarcador no destructivo de la polución acuática

    Directory of Open Access Journals (Sweden)

    BEATRIZ TORO

    2003-06-01

    Full Text Available Reduction in clearance rate was observed in the mussel Choromytilus chorus in relation to the degree of environmental pollution. Three sampling sites included the polluted San Vicente Bay, middling polluted Corral Bay, and weakly polluted Yaldad Bay in southern Chile. Pollution levels were estimated by quantitative analysis of polynuclear aromatic hydrocarbons (PAHs in mussel tissue from the three sites. Mussels from San Vicente showed lowest clearance rates and highest PAHs levels in both spring 1998 and summer 1999. Populations from Corral and Yaldad showed generally low levels of PAHs, so the mussels from Yaldad showed the highest rates of clearance in comparison to Corral and San Vicente populations. The significant negative relationship (P Se observó un deterioro de la tasa de aclaramiento en Choromytilus chorus de acuerdo al grado de polución ambiental. Se incluyeron tres sitios de muestreos, la bahía de San Vicente muy contaminada, la bahía de Corral con una polución intermedia y la bahía de Yaldad, al sur de Chile, con una baja contaminación. Los niveles de polución fueron estimados por análisis cuantitativos de hidrocarburos aromáticos polinucleares (HAPs en el tejido de los choros zapatos de los tres sitios de muestreo. Los choros zapatos de San Vicente mostraron la menor tasa de aclaramiento y altos niveles de HAPs, tanto en la primavera de 1998 como en el verano de 1999. Las poblaciones de Corral y Yaldad mostraron en general bajos niveles de HAPs, en tanto que los ejemplares de Yaldad presentaron altas tasas de aclaramiento en comparación con las poblaciones de Corral y San Vicente. La relación negativa significativa (P < 0,001 entre la polución en el tejido de los choros zapatos y sus tasas de aclaramiento, argumenta la utilidad del método como un biomarcador no destructivo para evaluar el impacto ambiental de la polución en las especies marinas

  9. Marching Choruses

    DEFF Research Database (Denmark)

    Lech, Marcel Lysgaard

    2009-01-01

      This article re-examines the evidence for choral marching in the Athenian theatre, which has fostered ideas on the dramatic choruses as military training for young men, ephebes. But the late lexicographical sources are not relating to the dramatic choruses of the fifth-century and are in consta...

  10. Chorus in Agamemnon

    Institute of Scientific and Technical Information of China (English)

    叶宬

    2012-01-01

      Agamemnon is the first play in Orestea trilogy. It deals with the murder of Agamemnon by his wife Clytemnestra. As is known to al , chorus plays a very important role in Greek tragedy. The chorus is, for sure, consistent pretty much across the play of Agamemnon. It keeps accompany of Agamemnon, analyzing his behavior, criticizing his wrong deed. The intensity that chorus produces creates ups and downs of the plot. It is an inseparable part of the play.

  11. The Function of the Tragic Greek Chorus.

    Science.gov (United States)

    Weiner, Albert

    1980-01-01

    Discusses the function of the chorus in Greek tragedy and highlights interpretations of Aristotle's statements on the chorus. Concludes that the chorus' role was that of alienating the audience and was basically theatrical, not dramatic. (JMF)

  12. CHORUS : Fotografare l'invisible

    CERN Multimedia

    Jean Leyder

    1996-01-01

    5 maggio 1994, siamo al Centro Europeo per la Fisica delle particelle elementare, al CERN di Ginevra, ultime registrazioni su CHORUS, un microscope gigante per vedere delle particelle infinitamente piccole, delle particelle che si muovono alla velocita della luce ...

  13. A baseline study of metal contamination along the Namibian coastline for Perna perna and Choromytilus meridionalis.

    Science.gov (United States)

    Dahms, S; van der Bank, F H; Greenfield, R

    2014-08-15

    The use of bivalves such as the brown mussel (Perna perna) and the black mussel (Choromytilus meridionalis) is common in the study of marine pollution and the effect of these pollutants on ecosystems and are important in both economic and ecological roles. Namibian marine ecosystems are threatened by pollution from mining, commercial fishing and population growth. The aims of this study were to determine baseline metal concentrations, spatial variation and variation between species. Metal levels in C. meridionalis from Guano Platform (GP) are the lowest of all the sites. The most polluted sites are Rocky Point (RP), Halifax Island (HIL) and between Walvis Bay and Swakopmund (WS). The bioaccumulation of metals between P. perna and C. meridionalis were not uniform for all metals. Overall the study indicates the condition of the coastline to be mostly normal, with Cd and Pb levels being of concern.

  14. 2016 AMS Mario J. Molina Symposium

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Renyi [Texas A & M Univ., College Station, TX (United States)

    2016-11-29

    A named symposium to honor Dr. Mario J. Molina was held 10–14 January 2016, as part of the 96th American Meteorological Society (AMS) Annual Meeting in New Orleans, Louisiana. Dr. Molina first demonstrated that industrially produced chlorofluorocarbons (CFCs) decompose in the stratosphere and release chlorine atoms, leading to catalytic ozone destruction. His research in stratospheric chemistry was instrumental to the establishment of the 1987 United Nations Montreal Protocol to ban ozone-depleting substances worldwide. Dr. Molina’s contributions to preserving the planet Earth not only save the atmospheric ozone layer, but also protect the climate by reducing the emissions of greenhouse gases. He was awarded the 1995 Nobel Prize in Chemistry for his pioneering research in understanding the stratospheric ozone loss mechanism. In 2013, President Barack Obama announced Dr. Molina as a recipient of the Presidential Medal of Freedom. The 2016 AMS Molina Symposium honored Dr. Molina’s distinguished contributions to research related to atmospheric chemistry. The symposium contained an integrated theme related to atmospheric chemistry, climate, and policy. Dr. Molina delivered a keynote speech at the Symposium. The conference included invited keynote speeches and invited and contributed oral and poster sessions, and a banquet was held on Tuesday January 12, 2016. The symposium covered all aspects of atmospheric chemistry, with topics including (1) Stratospheric chemistry, (2) Tropospheric chemistry, (3) Aerosol nucleation, growth, and transformation, (4) Aerosol properties, (5) Megacity air pollution, and (6) Atmospheric chemistry laboratory, field, and modeling studies. This DOE project supported 14 scientists, including graduate students, post docs, junior research scientists, and non-tenured assistant professors to attend this symposium.

  15. New results of investigations of whistler-mode chorus emissions

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    O. Santolík

    2008-07-01

    Full Text Available This review summarizes selected recent results obtained during investigation of whistler-mode chorus emissions in the Earth's magnetosphere. Special attention is paid to results published during the last five years, with a focus on the results of the CLUSTER project. The nonlinear nature of chorus emissions is demonstrated using both theoretical results and measurements. Selected areas of research on whistler-mode chorus are covered and the paper especially reports new results on substructure and amplitudes of chorus wave packets, on new observations of frequency differences of chorus wave packets at different points in space and on their possible interpretations, on results concerning determination of position and size of the source region of chorus, on recent observational and theoretical results which lead to improved description of propagation of chorus from its source, and, finally, on comparison of chorus measurements with corresponding values deduced from nonlinear theory and simulations.

  16. Ducted propagation of chorus waves: Cluster observations

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    K. H. Yearby

    2011-09-01

    Full Text Available Ducted propagation of whistler waves in the terrestrial magnetosphere-ionosphere system was discussed and studied long before the first in-situ spacecraft measurements. While a number of implicit examples of the existence of ducted propagation have been found, direct observation of ducts has been hampered by the low sampling rates of measurements of the plasma density. The present paper is based on Cluster observations of chorus waves. The ability to use measurements of the spacecraft potential as a proxy for high time resolution electron density measurements is exploited to identify a number of cases when increased chorus wave power, observed within the radiation belts, is observed simultaneously with density enchantments. It is argued that the observation of ducted propagation of chorus implies modification of numerical models for plasma-wave interactions within the radiation belts.

  17. Gerardo Molina y el Estado providente

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    Cataño , Gonzalo

    2004-12-01

    Full Text Available En este ensayo Gonzalo Cataño examina la visión del Estado del notable pensador y dirigente socialista colombiano, Gerardo Molina. Ofrece una breve información biográfica y comenta su enfoque sobre las funciones del aparato estatal. Aunque en la exposición predomina un tono crítico, muestra que las limitaciones de un analista inteligente de los asuntos públicos son más instructivas que las consideraciones correctas de un comentarista trivial de la política. En este trabajo se denomina por Estado providente ¿conocido también como asistencial o de bienestar¿ al que garantiza niveles mínimos de ingreso, salud, alimentación, vivienda, educación y trabajo, como derecho político y no como beneficencia.

  18. DANGEROUS GAMES IN CARLOS DENIS MOLINA'S PLAYS

    OpenAIRE

    Braillon-Chantraine, Cécile

    2014-01-01

    International audience; De par son hyper réflexivité, l'oeuvre dramatique de l'écrivain uruguayen Carlos Denis Molina (1916-1983) constitue un témoignage des pratiques théâtrales de son époque et des mutations socio-économiques que traverse son pays, l'Uruguay, au cours du vingtième siècle. Le procédé méta théâtral du jeu, mettant en scène des personnages en train de se divertir et de jouer un rôle, est présent dans plusieurs de ses pièces, à chaque étape de sa production dramatique, et débou...

  19. The trigger system of the CHORUS experiment

    Energy Technology Data Exchange (ETDEWEB)

    Beuzekom, M.G. van [NIKHEF, Amsterdam (Netherlands); Boes, J.C. [NIKHEF, Amsterdam (Netherlands); Born, E.A. van den [NIKHEF, Amsterdam (Netherlands); Jaspers, M.J.F. [NIKHEF, Amsterdam (Netherlands); Konijn, J. [NIKHEF, Amsterdam (Netherlands); Oldeman, R.G.C. [NIKHEF, Amsterdam (Netherlands); Poel, C.A.F.J. van der [NIKHEF, Amsterdam (Netherlands); Reen, T. van [NIKHEF, Amsterdam (Netherlands); Stolte, J. [NIKHEF, Amsterdam (Netherlands); Uiterwijk, J.W.E. [NIKHEF, Amsterdam (Netherlands); Visschers, J.L. [NIKHEF, Amsterdam (Netherlands); Pesen, E. [Middle East Technical University, Ankara (Turkey); Zeyrek, M.T. [Middle East Technical University, Ankara (Turkey); Dewulf, J.P. [Inter-University Institute for High Energies (ULB-VUB), Brussels (Belgium); Bal, F. [CERN, EP Division, 1211 Geneva 23 (Switzerland); Beyer, R. [CERN, EP Division, 1211 Geneva 23 (Switzerland); Gorbunov, P. [CERN, EP Division, 1211 Geneva 23 (Switzerland); Ferreira, R. [CERN, EP Division, 1211 Geneva 23 (Switzerland); Friend, B. [CERN, EP Division, 1211 Geneva 23 (Switzerland); Jong, M. de [CERN, EP Division, 1211 Geneva 23 (Switzerland); Ludovici, L. [CERN, EP Division, 1211 Geneva 23 (Switzerland); Panman, J. [CERN, EP Division, 1211 Geneva 23 (Switzerland); Bonnet, L. [Universite Catholique de Louvain, Louvain-la-Neuve (Belgium); Gregoire, G. [Universite Catholique de Louvain, Louvain-la-Neuve (Belgium)

    1999-05-01

    A new apparatus for detection of {nu}{sub {mu}}{yields}{nu}{sub {tau}} oscillation has been successfully constructed and operated by the CHORUS Collaboration for the CERN-WA95 experiment. The design, implementation and performance of the electronic trigger system is described. A trigger efficiency of 99% was measured for {nu}{sub {mu}} charged-current events and 90% for neutral-current events.

  20. Breeding chorus indices are weakly related to estimated abundance of boreal chorus frogs

    Science.gov (United States)

    Corn, P.S.; Muths, E.; Kissel, A.M.; Scherer, R. D.

    2011-01-01

    Call surveys used to monitor breeding choruses of anuran amphibians generate index values that are frequently used to represent the number of male frogs present, but few studies have quantified this relationship. We compared abundance of male Boreal Chorus Frogs (Pseudacris maculata), estimated using capture–recapture methods in two populations in Colorado, to call index values derived from automated recordings. Single index values, such as might result from large monitoring efforts, were unrelated to population size. A synthetic call saturation index (CSI), the daily proportion of the maximum possible sum of index values derived from multiple recordings, was greater in larger populations, but the relationship was not highly predictive.

  1. A generation mechanism for chorus emission

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    V. Y. Trakhtengerts

    Full Text Available A chorus generation mechanism is discussed, which is based on interrelation of ELF/VLF noise-like and discrete emissions under the cyclotron wave-particle interactions. A natural ELF/VLF noise radiation is excited by the cyclotron instability mechanism in ducts with enhanced cold plasma density or at the plasmapause. This process is accompanied by a step-like deformation of the energetic electron distribution function in the velocity space, which is situated at the boundary between resonant and nonresonant particles. The step leads to the strong phase correlation of interacting particles and waves and to a new backward wave oscillator (BWO regime of wave generation, when an absolute cyclotron instability arises at the central cross section of the geomagnetic trap, in the form of a succession of discrete signals with growing frequency inside each element. The dynamical spectrum of a separate element is formed similar to triggered ELF/VLF emission, when the strong wavelet starts from the equatorial plane. The comparison is given of the model developed using some satellite and ground-based data. In particular, the appearance of separate groups of chorus signals with a duration 2-10 s can be connected with the preliminary stage of the step formation. BWO regime gives a succession period smaller than the bounce period of energetic electrons between the magnetic mirrors and can explain the observed intervals between chorus elements.

    Key words. Magnetospheric physics (Energetic particles · trapped. Space plasma physics (wave-particle interactions; waves and instabilities

  2. Animal choruses emerge from receiver psychology

    Science.gov (United States)

    Greenfield, Michael D.; Esquer-Garrigos, Yareli; Streiff, Réjane; Party, Virginie

    2016-01-01

    Synchrony and alternation in large animal choruses are often viewed as adaptations by which cooperating males increase their attractiveness to females or evade predators. Alternatively, these seemingly composed productions may simply emerge by default from the receiver psychology of mate choice. This second, emergent property hypothesis has been inferred from findings that females in various acoustic species ignore male calls that follow a neighbor’s by a brief interval, that males often adjust the timing of their call rhythm and reduce the incidence of ineffective, following calls, and from simulations modeling the collective outcome of male adjustments. However, the purported connection between male song timing and female preference has never been tested experimentally, and the emergent property hypothesis has remained speculative. Studying a distinctive katydid species genetically structured as isolated populations, we conducted a comparative phylogenetic analysis of the correlation between male call timing and female preference. We report that across 17 sampled populations male adjustments match the interval over which females prefer leading calls; moreover, this correlation holds after correction for phylogenetic signal. Our study is the first demonstration that male adjustments coevolved with female preferences and thereby confirms the critical link in the emergent property model of chorus evolution. PMID:27670673

  3. A generation mechanism of chorus emissions using BWO theory

    Energy Technology Data Exchange (ETDEWEB)

    Singh, Ashutosh K; Singh, K K; Singh, A K; Patel, R P [Department of Physics, M. M. H. P. G. College, Ghaziabad (India); Singh, R, E-mail: abhay_s@rediffmail.co [Indian Institute of Geomagnetism, Navi Mumbai (India)

    2010-02-01

    In this paper, discrete VLF chorus emissions recorded at low latitude ground station Jammu (geomag. Lat. = 22{sup 0} 26{sup /} N, L = 1.17) are reported and their characteristics based on complete spectral analysis have been carried out. These discrete chorus emissions are generated during a strong geomagnetic storm period of 2-7 May, 1998. We have computed the sweep rate, repetition period, source region, and drift rate of the individual chorus elements. It is observed that the sweep rate increases with time. To explain the various temporal and spectral features of these emissions, a possible generation mechanism has been presented based on the backward wave oscillator (BWO) regime in the magnetospheric cyclotron maser. On the basis of this model, we have computed some discrete chorus emission parameters as well as magnetospheric parameters relevant to the generation process. A comparison of the computed and observed magnetospheric parameters has been presented. These results show a good agreement with the BWO model.

  4. Laboratory simulation of magnetospheric chorus wave generation

    Science.gov (United States)

    Van Compernolle, B.; An, X.; Bortnik, J.; Thorne, R. M.; Pribyl, P.; Gekelman, W.

    2017-01-01

    Whistler mode chorus emissions with a characteristic frequency chirp are important magnetospheric waves, responsible for the acceleration of outer radiation belt electrons to relativistic energies and also for the scattering loss of these electrons into the atmosphere. A laboratory experiment (Van Compernolle et al 2015 Phys. Rev. Lett. 114 245002, An et al 2016 Geophys. Res. Lett.) in the large plasma device at UCLA was designed to closely mimic the scaled plasma parameters observed in the inner magnetosphere, and shed light on the excitation of discrete frequency whistler waves. It was observed that a rich variety of whistler wave emissions is excited by a gyrating electron beam. The properties of the whistler emissions depend strongly on plasma density, beam density and magnetic field profiles.

  5. Monotest in the complement fixation test: the Chorus system

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    Laura Meli

    2009-06-01

    Full Text Available The complement fixation test (CFT is a method used for the detection of antibodies against pathogens of infectious diseases, it has been proved to be a useful diagnostic method in the detection of acute disease in many medical laboratories.The test performed manually is time consuming and needs very skilled personnel.This study evaluates the automated Chorus CFT system with 87 serum samples in comparison with manual method using Virion-Serion reagents, against a panel of antigens, such as Adenovirus, Influenza A and B virus, Respiratory Syncythial Virus, Parainfluenza Mix, Mycoplasma Pneumoniae, and Echinococcus. The Chorus system includes standardized reagents and a monotest device to perform the single assay. In comparison to the manual CFT method, the correlation is 91.6% (7/83.The results obtained show that the automated Chorus system can be applied for detecting complement fixation antibodies against different infectious disease agents.

  6. Chorusing, synchrony and the evolutionary functions of rhythm

    Directory of Open Access Journals (Sweden)

    Andrea eRavignani

    2014-10-01

    Full Text Available A central goal of biomusicology is to understand the biological basis of human musicality. One approach to this problem has been to compare core components of human musicality (relative pitch perception, entrainment, etc. with similar capacities in other animal species. Here we extend and clarify this comparative approach with respect to rhythm. First, whereas most comparisons between human music and animal acoustic behavior have focused on spectral properties (melody and harmony, we argue for the central importance of temporal properties, and propose that this domain is ripe for further comparative research. Second, whereas most rhythm research in non-human animals has examined animal timing in isolation, we consider how chorusing dynamics can shape individual timing, as in human music and dance, making group behavior key to understand the adaptive functions of rhythm. To illustrate the interdependence between individual and chorusing dynamics, we present a computational model of chorusing agents relating individual call timing with synchronous group behavior. Third, we distinguish and clarify mechanistic and functional explanations of rhythmic phenomena, often conflated in the literature, arguing that this distinction is key for understanding the evolution of musicality. Fourth, we expand biomusicological discussions beyond the species typically considered, providing an overview of chorusing and rhythmic behavior across a broad range of taxa (orthopterans, fireflies, frogs, birds, and primates. Finally, we propose an Evolving Signal Timing hypothesis, suggesting that similarities between timing abilities in biological species will be based on comparable chorusing behaviors. We conclude that the comparative study of chorusing species can provide important insights into the adaptive function(s of rhythmic behavior in our proto-musical primate ancestors, and thus inform our understanding of the biology and evolution of rhythm in human music and

  7. Chorusing, synchrony, and the evolutionary functions of rhythm.

    Science.gov (United States)

    Ravignani, Andrea; Bowling, Daniel L; Fitch, W Tecumseh

    2014-01-01

    A central goal of biomusicology is to understand the biological basis of human musicality. One approach to this problem has been to compare core components of human musicality (relative pitch perception, entrainment, etc.) with similar capacities in other animal species. Here we extend and clarify this comparative approach with respect to rhythm. First, whereas most comparisons between human music and animal acoustic behavior have focused on spectral properties (melody and harmony), we argue for the central importance of temporal properties, and propose that this domain is ripe for further comparative research. Second, whereas most rhythm research in non-human animals has examined animal timing in isolation, we consider how chorusing dynamics can shape individual timing, as in human music and dance, arguing that group behavior is key to understanding the adaptive functions of rhythm. To illustrate the interdependence between individual and chorusing dynamics, we present a computational model of chorusing agents relating individual call timing with synchronous group behavior. Third, we distinguish and clarify mechanistic and functional explanations of rhythmic phenomena, often conflated in the literature, arguing that this distinction is key for understanding the evolution of musicality. Fourth, we expand biomusicological discussions beyond the species typically considered, providing an overview of chorusing and rhythmic behavior across a broad range of taxa (orthopterans, fireflies, frogs, birds, and primates). Finally, we propose an "Evolving Signal Timing" hypothesis, suggesting that similarities between timing abilities in biological species will be based on comparable chorusing behaviors. We conclude that the comparative study of chorusing species can provide important insights into the adaptive function(s) of rhythmic behavior in our "proto-musical" primate ancestors, and thus inform our understanding of the biology and evolution of rhythm in human music and

  8. On the numerical modelling of VLF chorus dynamical spectra

    Directory of Open Access Journals (Sweden)

    D. Nunn

    2009-06-01

    Full Text Available This paper presents a study of the use of a one-dimensional Vlasov Hybrid Simulation (VHS computer code to simulate the dynamical spectra (i.e. frequency versus time spectrograms of ELF/VLF chorus signals (from ~a fraction to ~10 kHz. Recently excellent measurements of chorus have been made in the source region close to the geomagnetic equator aboard the four spacecraft Cluster mission. Using Cluster data for wave amplitude, which is up to 300 pT, local gyrofrequency, cold plasma density, and L-shell, observed chorus signals are reproduced with remarkable fidelity and, in particular, sweep rates in the range 1–10 kHz result as observed. Further, we find that the sweep rate is a falling function of increasing cold plasma density, again in accord with observations. Finally, we have satisfactorily simulated the rather rare falling frequency elements of chorus which are sometimes observed aboard Cluster in the generation region. For both rising and falling chorus we have presented detailed structural analyses of the generation regions. The main contributor to the frequency sweep rate is primarily the establishment of wave number/frequency gradients across the generation region by the out of phase component of the resonant particle current. The secondary contributor is the shortening of the wavelength of resonant particle current relative to that of the wave field. In view of the close agreement between observation and simulation, we conclude that nonlinear electron cyclotron resonance is indeed the mechanism underlying the generation of chorus signals just outside the plasmasphere.

  9. Generation of Multiband Chorus in the Earth's Magnetosphere: 1-D PIC Simulation

    Science.gov (United States)

    Gao, Xinliang; Ke, Yangguang; Lu, Quanming; Chen, Lunjin; Wang, Shui

    2017-01-01

    Multiband chorus waves, where the frequency of upper band chorus is about twice that of lower band chorus, have recently been reported based on THEMIS observations. The generation of multiband chorus waves is attributed to the mechanism of lower band cascade, where upper band chorus is excited via the nonlinear coupling process between lower band chorus and the associated density mode with the frequency equal to that of lower band chorus. In this letter, with a one-dimensional (1-D) particle-in-cell (PIC) simulation model, we have successfully reproduced multiband chorus waves. During the simulation, the significant density fluctuation is driven by the fluctuating electric field along the wave vector of the pump wave (lower band chorus), which can be directly observed in this self-consistent plasma system. Then, the second harmonic of the pump whistler-mode wave (upper band chorus) is generated. After quantitatively analyzing resonant conditions among wave numbers, we can confirm that the generation is caused due to the coupling between the pump wave and the density fluctuation along its wave vector. The third harmonic can also be excited through lower band cascade if the pump whistler-mode wave has a sufficiently large amplitude. Our simulation results not only provide a theoretical support to the mechanism of lower band cascade to generate multiband chorus but also propose a new pattern of evolution for whistler-mode waves in the Earth's magnetosphere.

  10. Generation mechanism of whistler-mode chorus emissions

    Science.gov (United States)

    Omura, Yoshiharu

    We describe the nonlinear dynamics of resonant electrons interacting with a coherent whistler-mode wave and the formation of electromagnetic electron holes or hills in the velocity phase space. In the presence of the inhomogeneity due to the frequency variation and the gradient of the magnetic field, the electron holes or hills result in resonant currents generating rising-tone emissions (1, 2) or falling-tone emissions (3), respectively. After formation of a coherent wave at the maximum linear growth rate, triggering of the nonlinear wave growth takes place when the wave amplitude is close to the optimum wave amplitude (4). The wave amplitude also has to be above the threshold amplitude (2) so that the nonlinear wave growth can occur as an absolute instability at the magnetic equator. The triggering process is repeated at progressively higher frequencies in the case of a rising-tone emission, generating subpackets of a chorus element. We also describe the mechanism of nonlinear wave damping due to quasi-oblique propagation from the equator (2), which results in the formation of a gap at half the electron cyclotron frequency, separating a long rising-tone chorus emission into the upper-band and lower-band chorus emissions (5). *References (1) Y. Omura,Y. Katoh, and D. Summers, Theory and simulation of the generation of whistler-mode chorus, J. Geophys. Res., 113, A04223, 2008. (2) Y. Omura, , M. Hikishima, Y. Katoh, D. Summers, and S. Yagitani, Nonlinear mechanisms of lower band and upper band VLF chorus emissions in the magnetosphere, J. Geophys. Res., 114, A07217, 2009. (3) Nunn, D., and Y. Omura, A computational and theoretical analysis of falling frequency VLF emissions, J. Geophys. Res., 117, A08228, 2012. (4) Omura, Y., and D. Nunn, Triggering process of whistler mode chorus emissions in the magnetosphere, J. Geophys. Res., 116, A05205, 2011. (5) S. Kurita, Y. Katoh, Y. Omura, V. Angelopoulos, C. M. Cully, O. Le Contel, and H. Misawa, THEMIS observation of

  11. Variation in phenolic compounds of Ugni molinae populations and their potential use as antioxidant supplement

    Directory of Open Access Journals (Sweden)

    Marcia A. Avello

    2012-01-01

    Full Text Available In the present work we carried out a comparative study of total phenolic contents and antioxidant capacity of aqueous leaf extracts of Ugni molinae Turcz., Myrtaceae (infusion and Soxhlet extracted prepared from continent and Juan Fernández Island samples. The results revealed that total phenol content (TPC, tannins (TTC and flavonoids (TFC for U. molinae extracts (infusion and Soxhlet extracts from island leaves were 38.5, 56.7 and 37.5% higher than those obtained with leaves from the continent, respectively. Also, HPLC profiles showed important differences between U. molinae populations. In vitro antioxidant capacity (scavenging of DPPH radical for 1% infusion and aqueous extract (Soxhlet method of U. molinae from island samples, was 15% greater than from continent samples. Further, in vivo impact of U. molinae intake (1% infusion was studied in plasma samples obtained from healthy volunteers. Participants that consumed tea prepared with leaves from island population showed higher TBARS reduction and plasma antioxidant capacity (TEAC-CUPRAC than those who consumed tea prepared with leaves from continental population. The conditions of the territory in which U. molinae populations growth could explain the differences in their composition and activity. According to results, island U. molinae populations could be an important source of study for the development of an antioxidant supplement, and thereby contribute to the use of this species that has becoming an ecological problem in the island.

  12. Litter Decomposition of Acacia caven (Molina Molina and Lolium multiflorum Lam. in Mediterranean Climate Ecosystems Descomposición de Hojarascas de Acacia caven (Molina Molina y Lolium multiflorum Lam. en Ecosistemas de Clima Mediterráneo

    Directory of Open Access Journals (Sweden)

    Ingrid Martínez G

    2010-09-01

    Full Text Available The ecosystems of the Mediterranean interior dryland of Chile, dominated by an espinal agroecosystem of Acacia caven (Molina Molina, show low productivity as a result of soil degradation. The objective of this study was to evaluate litter decomposition of A. caven and Lolium multiflorum Lam. in espinal ecosystems: well preserved (Wp 50 to 80%, typical (Pd 25 to 50%, and degraded (De with 10 to 25% cover. During 420 d and starting in April 2004 until August 2005, weight loss in litter bags and chemical composition (hemicellulose, cellulose, lignin, non-structural components, ash, N, C, C/N ratio, and P were determined by using near infrared reflectance spectroscopy (NIRS and the Van Soest protocol. Weight loss ranged from 31 to 52% in L. multiflorum and 26 to 40% in A. caven after 420 d. During the chemical decomposition process of L. multiflorum, cellulose degradation was relevant in the labile phase while lignin was important in the recalcitrant phase. On the other hand, non-structural components and cellulose were degraded in the labile phase and lignin in the recalcitrant stage for A. caven. Moreover, both litters improved N concentration during the decomposition process. Espinal ecosystems with higher canopy cover (Pd and Wp had a positive influence, and showed early effects during the decomposition process, especially in the De espinal ecosystem, probably because of the microenvironmental conditions it generated. A better knowledge of the dynamics of litter decomposition in ecosystems was achieved by using both techniques: litter bags and NIRS.Los ecosistemas del secano interior mediterráneo de Chile presentan una baja productividad debido a la degradación de los suelos, dominados por un agroecosistema espinal de Acacia caven (Molina Molina. El objetivo de este estudio fue evaluar la descomposición de hojarascas de A. caven y Lolium multiflorum Lam., en ecosistemas espinales: densos (Wp con cobertura de 50-80%, poco densos (Pd 25-50% y

  13. JEUX DANGEREUX DANS LE THEATRE DE CARLOS DENIS MOLINA?

    OpenAIRE

    Braillon-Chantraine, Cécile

    2014-01-01

    International audience; De par son hyper réflexivité, l'oeuvre dramatique de l'écrivain uruguayen Carlos Denis Molina (1916-1983) constitue un témoignage des pratiques théâtrales de son époque et des mutations socio-économiques que traverse son pays, l'Uruguay, au cours du vingtième siècle. Le procédé méta théâtral du jeu, mettant en scène des personnages en train de se divertir et de jouer un rôle, est présent dans plusieurs de ses pièces, à chaque étape de sa production dramatique, et débou...

  14. Ultrasonically enhanced extraction of bioactive principles from Quillaja Saponaria Molina.

    Science.gov (United States)

    Gaete-Garretón, L; Vargas-Hernández, Yolanda; Cares-Pacheco, María G; Sainz, Javier; Alarcón, John

    2011-07-01

    A study of ultrasonic enhancement in the extraction of bioactive principles from Quillaja Saponaria Molina (Quillay) is presented. The effects influencing the extraction process were studied through a two-level factorial design. The effects considered in the experimental design were: granulometry, extraction time, acoustic Power, raw matter/solvent ratio (concentration) and acoustic impedance. It was found that for aqueous extraction the main factors affecting the ultrasonically-assisted process were: granulometry, raw matter/solvent ratio and extraction time. The extraction ratio was increased by Ultrasonics effect and a reduction in extraction time was verified without any influence in the product quality. In addition the process can be carried out at lower temperatures than the conventional method. As the process developed uses chips from the branches of trees, and not only the bark, this research contributes to make the saponin exploitation process a sustainable industry.

  15. Chorus from Two Brain Hemispheres with Chinese Pentatonic Scale

    Institute of Scientific and Technical Information of China (English)

    WU Dan; YAO De-zhong

    2014-01-01

    In order to listen to brain activity as a piece of music, we proposed a scale-free brainwave music (SFBM) technology, which translates the scalp EEG into music notes according to the power law of both EEG and music. In this paper, the methodology was further extended to chorus music of two channels from the two hemispheres. Firstly, EEG data from two channels symmetrically located on the left and right hemispheres are translated into MIDI sequences by SFBM, respectively, where the EEG parameters modulate the pitch, duration and volume of each music note. Then, the two sequences are fiitered into a chorus of the Chinese pentatonic scale or the Western major scale. The resulted Chinese and Western music at different sleep stages illustrate distinct differences in harmony, and the music with Chinese pentatonic scale sounds more harmonious.

  16. Review of recent results from NOMAD and CHORUS

    CERN Document Server

    Meyer, J P

    2000-01-01

    NOMAD and CHORUS are two short baseline neutrino oscillation experiments searching for nu /sub mu / to nu /sub tau / oscillations in the CERN SPS wide band neutrino beam. CHORUS has analysed about 60% of the data and finds no tau /sup -/ candidate. A limit is set at P/sub osc/( nu /sub mu / to nu /sub tau /)<4.0*10/sup -4/ (90% C.L.). NOMAD has almost finished the analysis and sees no excess of events. A limit is set at P/sub osc/( nu /sub mu / to nu /sub tau /)<4.2*10 /sup -4/ (90% C.L.). Combining this two results with the unified approach one can set a limit at P/sub osc/( nu /sub mu / to nu /sub tau /)<1.3*10/sup -4/. (7 refs).

  17. Noticia preliminar de los grabados de la Peña Escrita (Canales de Molina, Guadalajara

    Directory of Open Access Journals (Sweden)

    María Luisa CERDEÑO

    2009-10-01

    Full Text Available La Peña Escrita está situada en el término de Canales de Molina, a escasos kilómetrros de Molina de Aragón al noreste de la provincia de Guadalajara. El paraje lo componen una serie de afloramientos de rocas calizas entre las que discurre el arroyo de la Dehesa que poco después, aguas abajo, desemboca en el río Gallo, afluente del Tajo.

  18. Augmentation and Maximization of Per-Capita Call Active Space Through Chorusing in Anuran Amphibians

    Science.gov (United States)

    Fox, James Henderson

    It is poorly understood why anuran males form choruses. Although various reasons have been proposed, empirical support is lacking. This study proposed, developed, and evaluated the chorus active space (CAS) augmentation theory, which states that anuran choruses are formed and organized so as to augment and maximize per-capita CAS beyond that which could be achieved by an isolated male. This study involved three phases. First, computer models of hypothetical choruses indicated that CAS, as defined, is necessarily augmented for chorusing males. These models provided the necessary information from which optimal interindividual distances (IIDs), corresponding to maximal CASs, could be estimated differentially for linear and planar chorus configurations. The second phase examined Acris crepitans and Hyla cinerea choruses for optimal intermale spacing. A. crepitans, which utilizes mixed chorus geometries (either linear or planar, depending on available resources), cannot optimize IID within any observed pond-type breeding site; however, observed spacing would be optimal along a stream bank, where chorusing often occurs, for a chorus population of 61, approximately the minimum value at which CAS characteristics are stabile. H. cinerea males, which form only planar choruses, space orders of magnitude closer than optimal. Suboptimal spacing in this species is understandable, considering the would-be size of an optimally spaced chorus. In the final phase of this study, a database of CAS-related data was compiled mostly from published sources and was examined for variable relationships predicted on the basis of CAS augmentation theory. The findings suggest that very few planar geometry species may maximize CAS; whereas, a much larger number of mixed geometry species, perhaps as well as linear geometry species, may maximize CAS. These findings loosely agree with the field study findings and suggest that CAS augmentation theory applies to at least a subset of anuran species and

  19. A Three-Dimensional Ray Tracing Study on Whistler-Mode Chorus During Geomagnetic Activities%A Three-Dimensional Ray Tracing Study on Whistler-Mode Chorus During Geomagnetic Activities

    Institute of Scientific and Technical Information of China (English)

    周庆华; 史建魁; 肖伏良

    2011-01-01

    A three-dimensional ray tracing study of a whistler-mode chorus is conducted for different geomagnetic activities by using a global core plasma density model. For the upperband chorus, the initial azimuthal wave angle affects slightly the projection of ray trajectories onto the plane (Z, √(x^2 + y^2)), but controls the longitudinal propagation. The trajectory of the upper-band chorus is strongly associated with the plasmapause and the magnetic local time (MLT) of chorus source region. For the high geomagnetic activity, the chorus trajectory moves inward together with the plasmapause. In the bulge region, the plasmapause extends outward, while the chorus trajectory moves outward together with the plasmapause. For moderately or high geomagnetic activity, the lower-band chorus suffers low hybrid resonance (LHR) reflection before it reaches the plasmapause, leading to a weak correlation with the geomagnetic activity and magnetic local time of the chorus source region. For low geomagnetic activity, the lower-band chorus may be reflected firstly at the plasmapause instead of suffering LHR reflection, exhibiting a propagation characteristic similar to that of the upper-band chorus. The results provide a new insight into the propagation characteristics of the chorus for different geomagnetic activities and contribute to further understanding of the acceleration of energetic electron by a chorus wave.

  20. The mid-high latitude whistler mode chorus waves observed around substorm onsets

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Using the data of LFEW/TC-2, we studied the dawn side chorus around substorm onsets during a strong geomagnetic storm in November 2004. During this storm, LFEW/TC-2 observed 14 dawnside chorus events. Nine of them were associated with substorms and occurred within 40 min around the substorm onsets. The fre-quencies of waves have a very good correlation with the half equatorial electron cyclotron frequencies. Chorus can be excited in the region near magnetic equato-rial plane and then propagate to the mid and high latitudes. When the wave fre-quencies reach the local lower hybrid frequencies, chorus can be reflected due to the lower hybrid resonance. The time delay between the chorus and its echo is about 28 min. Previous observations show that the chorus can propagate at most to the magnetic latitudes of 40°. LFEW/ TC-2 found for the first time that the chorus in space could propagate to the magnetic latitude of 70°. Since most of the previous chorus observations are made close to the magnetic equatorial plane, our results are important for the studies of excitation and propagation of whistler mode wave, and relevant relativistic electron acceleration in the magnetosphere.

  1. The mid-high latitude whistler mode chorus waves observed around substorm onsets

    Institute of Scientific and Technical Information of China (English)

    YANG JunYing; CAO JinBin; YAN ChunXiao; LI LiuYuan; MA YuDuan

    2008-01-01

    Using the data of LFEW/TC-2, we studied the dawn side chorus around substorm onsets during a strong geomagnetic storm in November 2004. During this storm, LFEW/TC-2 observed 14 dawnside chorus events. Nine of them were associated with substorms and occurred within 40 min around the substorm onsets. The fre-quencies of waves have a very good correlation with the half equatorial electron cyclotron frequencies. Chorus can be excited in the region near magnetic equato-rial plane and then propagate to the mid and high latitudes. When the wave fre-quencies reach the local lower hybrid frequencies, chorus can be reflected due to the lower hybrid resonance. The time delay between the chorus and its echo is about 28 min. Previous observations show that the chorus can propagate at most to the magnetic latitudes of 40°. LFEW/TC-2 found for the first time that the chorus in space could propagate to the magnetic latitude of 70°. Since most of the previous chorus observatlons are made close to the magnetic equatorial plane, our results are Important for the studies of excitation and propagation of whistler mode wave, and relevant relativistic electron acceleration in the magnetosphere.

  2. Standard Works for Chorus: "Ein Deutsches Requiem.""How Lovely Is Thy Dwelling Place."

    Science.gov (United States)

    Heffernan, Charles W.

    1983-01-01

    While high school choirs used to perform extended choral works, in recent years the emphasis has been on shorter works and unaccompanied chorus. Describes "A German Requiem" by Brahms and recommends performance of its fourth movement to develop the musical growth of a chorus. (CS)

  3. Evolution of chorus emissions into plasmaspheric hiss observed by Van Allen Probes

    Science.gov (United States)

    Zhou, Qinghua; Xiao, Fuliang; Yang, Chang; Liu, Si; He, Yihua; Wygant, J. R.; Baker, D. N.; Spence, H. E.; Reeves, G. D.; Funsten, H. O.

    2016-05-01

    The two classes of whistler mode waves (chorus and hiss) play different roles in the dynamics of radiation belt energetic electrons. Chorus can efficiently accelerate energetic electrons, and hiss is responsible for the loss of energetic electrons. Previous studies have proposed that chorus is the source of plasmaspheric hiss, but this still requires an observational confirmation because the previously observed chorus and hiss emissions were not in the same frequency range in the same time. Here we report simultaneous observations form Van Allen Probes that chorus and hiss emissions occurred in the same range ˜300-1500 Hz with the peak wave power density about 10-5 nT2/Hz during a weak storm on 3 July 2014. Chorus emissions propagate in a broad region outside the plasmapause. Meanwhile, hiss emissions are confined inside the plasmasphere, with a higher intensity and a broader area at a lower frequency. A sum of bi-Maxwellian distribution is used to model the observed anisotropic electron distributions and to evaluate the instability of waves. A three-dimensional ray tracing simulation shows that a portion of chorus emission outside the plasmasphere can propagate into the plasmasphere and evolve into plasmaspheric hiss. Moreover, hiss waves below 1 kHz are more intense and propagate over a broader area than those above 1 kHz, consistent with the observation. The current results can explain distributions of the observed hiss emission and provide a further support for the mechanism of evolution of chorus into hiss emissions.

  4. La ficción de Iván Molina Jiménez (Science Fiction by Iván Molina Jiménez

    Directory of Open Access Journals (Sweden)

    Roy Alfaro Vargas

    2014-11-01

    Full Text Available El estudio analiza la narrativa de ciencia ficción de Iván Molina Jiménez, a partir de un cuerpo teórico para abordar el análisis y la producción literaria de ciencia ficción, desde una adecuada poiesis. Se plantean los principios alrededor de la noción de novum, para la producción literaria de este tipo. Luego, se analizan algunos textos de ciencia ficción de Molina, y se muestran deficiencias de tal producción para así iniciar la construcción de las bases de la ciencia ficción costarricense. This article analyzes the tales of science fiction by Iván Molina Jiménez using a theoretical framework which makes it possible to address the literary production of science fiction, from the perspective of an adequate poiesis. The necessary principles based on the notion of novum are proposed for this genre. Then, some texts of science fiction by Iván Molina are analyzed, indicating certain deficiencies in order to begin the construction of the basis of the Costa Rican science fiction.

  5. CHORUS – providing a scalable solution for public access to scholarly research

    Directory of Open Access Journals (Sweden)

    Howard Ratner

    2014-03-01

    Full Text Available CHORUS (Clearinghouse for the Open Research of the United States offers an open technology platform in response to the public access requirements of US federal funding agencies, researchers, institutions and the public. It is focused on five principal sets of functions: 'identification', 'preservation', 'discovery', 'access', and 'compliance' . CHORUS facilitates public access to peer-reviewed publications, after a determined embargo period (where applicable, for each discipline and agency. By leveraging existing tools such as CrossRef, FundRef and ORCID, CHORUS allows a greater proportion of funding to remain focused on research. CHORUS identifies articles that report on federally funded research and enables a reader to access the ‘best available version’ free of charge, via the publisher. It is a scalable solution that offers maximum efficiency for all parties by automating as much of the process as is possible. CHORUS launched in pilot phase in September 2013, and the production phase will begin in early 2014.

  6. Ultrasonically assisted extraction of bioactive principles from Quillaja Saponaria Molina

    Science.gov (United States)

    Cares, M. G.; Vargas, Y.; Gaete, L.; Sainz, J.; Alarcón, J.

    2010-01-01

    A study of ultrasonically assisted extraction of bioactive principles from Quillaja Saponaria Molina (Quillay) is presented. To address the problem it was studied the effects that could influence the extraction process through a two-level Factorial Design. The effects considered in the Experimental Design were: Granulometry, Extraction time, Acoustic Power and Acoustic Impedance. The production of the quillaja extracts is done with an aqueous extraction and the process is assisted by an ultrasonic field; no other solvents are used in its production. The final product only incorporates natural ingredients and raw materials, authorized for their use in food manufacturing processes. The principal factors affecting the ultrasonic extraction process were: Granulometry and Extraction time. The enhanced of ultrasonic assisted extraction ratio was measuring the increasing yield of extracted components, the extraction ratio was increased by ultrasonic effect and a reduction in extraction time was verified. In addition the process can be carried out at temperatures lower than the traditional way. The influence of ultrasound on the quality of bioactive principles was examined by HPLC technique and no influence of ultrasound on natural components was found.

  7. Source location of chorus emissions observed by Cluster

    Directory of Open Access Journals (Sweden)

    M. Parrot

    Full Text Available One of the objectives of the Cluster mission is to study sources of various electromagnetic waves using the four satellites. This paper describes the methods we have applied to data recorded from the STAFF spectrum analyser. This instrument provides the cross spectral matrix of three magnetic and two electric field components. This spectral matrix is analysed to determine, for each satellite, the direction of the wave normal relative to the Earth’s magnetic field as a function of frequency and of time. Due to the Cluster orbit, chorus emissions are often observed close to perigee, and the data analysis determines the direction of these waves. Three events observed during different levels of magnetic activity are reported. It is shown that the component of the Poynting vector parallel to the magnetic field changes its sense when the satellites cross the magnetic equator, which indicates that the chorus waves propagate away from the equator. Detailed analysis indicates that the source is located in close vicinity of the plane of the geomagnetic equator.

    Key words. Magnetospheric physics (plasma waves and instabilities; storms and substorms; Space plasma physics (waves and instabilities

  8. Modelling substorm chorus events in terms of dispersive azimuthal drift

    Directory of Open Access Journals (Sweden)

    A. B. Collier

    2004-12-01

    Full Text Available The Substorm Chorus Event (SCE is a radio phenomenon observed on the ground after the onset of the substorm expansion phase. It consists of a band of VLF chorus with rising upper and lower cutoff frequencies. These emissions are thought to result from Doppler-shifted cyclotron resonance between whistler mode waves and energetic electrons which drift into a ground station's field of view from an injection site around midnight. The increasing frequency of the emission envelope has been attributed to the combined effects of energy dispersion due to gradient and curvature drifts, and the modification of resonance conditions and variation of the half-gyrofrequency cutoff resulting from the radial component of the ExB drift.

    A model is presented which accounts for the observed features of the SCE in terms of the growth rate of whistler mode waves due to anisotropy in the electron distribution. This model provides an explanation for the increasing frequency of the SCE lower cutoff, as well as reproducing the general frequency-time signature of the event. In addition, the results place some restrictions on the injected particle source distribution which might lead to a SCE.

    Key words. Space plasma physics (Wave-particle interaction – Magnetospheric physics (Plasma waves and instabilities; Storms and substorms

  9. Signal interactions and interference in insect choruses: singing and listening in the social environment.

    Science.gov (United States)

    Greenfield, Michael D

    2015-01-01

    Acoustic insects usually sing amidst conspecifics, thereby creating a social environment-the chorus-in which individuals communicate, find mates, and avoid predation. A temporal structure may arise in a chorus because of competitive and cooperative factors that favor certain signal interactions between neighbors. This temporal structure can generate significant acoustic interference among singers that pose problems for communication, mate finding, and predator detection. Acoustic insects can reduce interference by means of selective attention to only their nearest neighbors and by alternating calls with neighbors. Alternatively, they may synchronize, allowing them to preserve call rhythm and also to listen for predators during the silent intervals between calls. Moreover, males singing in choruses may benefit from reduced per capita predation risk as well as enhanced vigilance. They may also enjoy greater per capita attractiveness to females, particularly in the case of synchronous choruses. In many cases, however, the overall temporal structure of the chorus is only an emergent property of simple, pairwise interactions between neighbors. Nonetheless, the chorus that emerges can impose significant selection pressure on the singing of those individual males. Thus, feedback loops may occur and potentially influence traits at both individual and group levels in a chorus.

  10. Frequencies of wave packets of whistler-mode chorus inside its source region: a case study

    Directory of Open Access Journals (Sweden)

    O. Santolik

    2008-06-01

    Full Text Available Whistler-mode chorus is a structured wave emission observed in the Earth's magnetosphere in a frequency range from a few hundreds of Hz to several kHz. We investigate wave packets of chorus using high-resolution measurements recorded by the WBD instrument on board the four Cluster spacecraft. A night-side chorus event observed during geomagnetically disturbed conditions is analyzed. We identify lower and upper frequencies for a large number of individual chorus wave packets inside the chorus source region. We investigate how these observations are related to the central position of the chorus source which has been previously estimated from the Poynting flux measurements. We observe typical frequency bandwidths of chorus of approximately 10% of the local electron cyclotron frequency. Observed time scales are around 0.1 s for the individual wave packets. Our results indicate a lower occurrence probability for lower frequencies in the vicinity of the central position of the source compared to measurements recorded closer to the outer boundaries of the source. This is in agreement with recent research based on the backward wave oscillator theory.

  11. Decoding Group Vocalizations: The Acoustic Energy Distribution of Chorus Howls Is Useful to Determine Wolf Reproduction

    Science.gov (United States)

    López-Bao, José Vicente; Llaneza, Luis; Fernández, Carlos; Font, Enrique

    2016-01-01

    Population monitoring is crucial for wildlife management and conservation. In the last few decades, wildlife researchers have increasingly applied bioacoustics tools to obtain information on several essential ecological parameters, such as distribution and abundance. One such application involves wolves (Canis lupus). These canids respond to simulated howls by emitting group vocalizations known as chorus howls. These responses to simulated howls reveal the presence of wolf litters during the breeding period and are therefore often used to determine the status of wolf populations. However, the acoustic structure of chorus howls is complex and discriminating the presence of pups in a chorus is sometimes difficult, even for experienced observers. In this study, we evaluate the usefulness of analyses of the acoustic energy distribution in chorus howls to identify the presence of pups in a chorus. We analysed 110 Iberian wolf chorus howls with known pack composition and found that the acoustic energy distribution is concentrated at higher frequencies when there are pups vocalizing. We built predictive models using acoustic energy distribution features to determine the presence of pups in a chorus, concluding that the acoustic energy distribution in chorus howls can be used to determine the presence of wolf pups in a pack. The method we outline here is objective, accurate, easily implemented, and independent of the observer's experience. These advantages are especially relevant in the case of broad scale surveys or when many observers are involved. Furthermore, the analysis of the acoustic energy distribution can be implemented for monitoring other social canids that emit chorus howls such as jackals or coyotes, provides an easy way to obtain information on ecological parameters such as reproductive success, and could be useful to study other group vocalizations. PMID:27144887

  12. Bounce-Averaged Acceleration of Energetic Electrons by Whistler Mode Chorus in the Magnetosphere

    Institute of Scientific and Technical Information of China (English)

    XIAO Fu-Liang; CHEN Liang-Xu; ZHOU Qing-Hua; HE Hui-Yong; WEN Yong-Jun

    2007-01-01

    @@ We construct the bounce-averaged diffusion coefficients and study the bounce-averaged acceleration for energetic electrons in gyroresonance with whistler mode chorus. Numerical calculations have been performed for a band of chorus frequency distributed over a standard Gaussian spectrum specifically in the region near L = 4.5, where peaks of the electron phase space density occur. It is found that whistler mode chorus can efficiently accelerate electrons and can increase the phase space density at energies of about 1 MeV by more than one order of magnitude about one day, in agreement with the satellite observations during the recovery phase of magnetic storms.

  13. Tartu segakoor "Chorus Forselianus" esines Krakovis / Jan Willemson, Madis Linnamägi

    Index Scriptorium Estoniae

    Willemson, Jan

    2011-01-01

    Krakovis 1.-3.10. 2010 toimunud 2. koorilaulufestivalist „Cracovia Music Festival”, kus osales üheksa koori üle Euroopa. Eestit esindas festivalil B. G. Forseliuse Seltsi segakoor „Chorus Forselianus”

  14. Greek Chorus: an Ageless Voice%希腊合唱团:永恒的声音

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ The chorus in an ancient Greek drama is typically composed of ten to fifteen men who rhythmically chant a dramatic refrain. They are viewed as one entity in the play as opposed to a group of people.

  15. A decade of innovation in pharmaceutical R&D: the Chorus model.

    Science.gov (United States)

    Owens, Paul K; Raddad, Eyas; Miller, Jeffrey W; Stille, John R; Olovich, Kenneth G; Smith, Neil V; Jones, Rosie S; Scherer, Joel C

    2015-01-01

    Chorus is a small, operationally independent clinical development organization within Eli Lilly and Company that specializes in drug development from candidate selection to clinical proof of concept. The mission of Chorus is to achieve proof of concept rapidly and at a low cost while positioning successful projects for 'pharma-quality' late-stage development. Chorus uses a small internal staff of experienced drug developers and a network of external vendors to design and implement chemistry, manufacturing and control processes, preclinical toxicology and biology, and Phase I/II clinical trials. In the decade since it was established, Chorus has demonstrated substantial productivity improvements in both time and cost compared to traditional pharmaceutical research and development. Here, we describe its development philosophy, organizational structure, operational model and results to date.

  16. La mujer como sujeto: Josefina Molina en la Escuela Oficial de Cine

    OpenAIRE

    Deltell Escolar, Luis

    2015-01-01

    Josefina Molina es la primera mujer diplomada en Dirección Cinematográfica en la Escuela Oficial de Cine de España (E.O.C.). Fue una de las primeras realizadoras televisivas incorporadas a la T.V.E. Durante toda su carrera artística, ha sido una pione

  17. Performance of the CHORUS lead-scintillating fiber calorimeter

    CERN Document Server

    Buontempo, S

    1997-01-01

    We report on the design and performance of the lead-scintillating fiber calorimeter of the CHORUS experiment, which searches for νμ-ντ oscillations in the CERN Wide Band Neutrino beam. Two of the three sectors in which the calorimeter is divided are made of lead and plastic scintillating fibers, and they represent the first large scale application of this technique for combined electromagnetic and hadronic calorimetry. The third sector is built using the sandwich technique with lead plates and scintillator strips and acts as a tail catcher for the hadronic energy flow. From tests performed at the CERN SPS and PS an energy resolution of σ(E)/E=(32.3±2.4)%/E(GeV)+(1.4±0.7)% was measured for pions, and σ(E)/E=(13.8±0.9)%/E(GeV)+(−0.2±0.4)% for electrons.

  18. «Héctor Molina Riaño»

    Directory of Open Access Journals (Sweden)

    Yanoy Morejón Mesa

    2008-01-01

    Full Text Available El presente trabajo se realizó en los campos pertenecientes a la Empresa Azucarera «Héctor Molina Riaño», con el objetivo de desarrollar una metodología que permita realizar una evaluación energética y económica durante la recogida y transportación de los residuos agrícolas cañeros (RAC hasta la industria, partiendo de la determinación de los volúmenes de RAC, en campos cosechados con máquinas CAMECO y en el centro de limpieza. Para esto se utilizaron utensilios e instrumentos reglamentados por las normas de medición y control de la calidad. El valor de los RAC quedados en el campo ascendió a 3,87 t/ha, que pueden ser recogidos y transportados para producir energía y el índice de RAC para estas condiciones fue de 0,11. El volumen total de RAC a transportar desde el campo alcanzó 26 524,74 t y desde el centro de limpieza alcanzó 28 051,70 t. Según criterios planteados por diversos autores se realizó la evaluación energética de la recogida y transportación de los RAC hasta la industria, obteniéndose una energía requerida total de 680 478,34 Mcal y la energía que se puede producir con los RAC recogidos y transportado s es de 256 509 268 Mcal. También se realizó la evaluación económica, obteniéndose un gasto económico total de 411 256,27 pesos, costo de la energía producida de 909 607 pesos, con un costo unitario de 7,53 peso/t de RAC recogido y transportado y 16,66 peso/t de RAC utilizados en la generación de energía. Con estos resultados se evidencia que es factible el uso de los RAC como combustible alternativo en el sector azucarero.

  19. Observational evidence of generation mechanisms for very oblique lower band chorus using THEMIS waveform data

    Science.gov (United States)

    Gao, Xinliang; Mourenas, Didier; Li, Wen; Artemyev, Anton V.; Lu, Quanming; Tao, Xin; Wang, Shui

    2016-07-01

    Chorus waves are intense coherent whistler mode waves with frequency chirping which play a dual role in both loss and acceleration of radiation belt electrons in the Earth's magnetosphere. Although the generation of parallel chorus waves has been extensively studied by means of theory, simulations, and observations, the generation mechanism of very oblique chorus waves still remains a mystery. In this study, we have analyzed hundreds of very oblique discrete (rising or falling tone) lower band chorus events collected from 7 years of Time History of Events and Macroscale Interactions during Substorms (THEMIS) waveform data to investigate their potential generation mechanisms. Comparisons between wave normal angles directly measured onboard THEMIS in the dawn-day sector at L = 5-9 and inferred from theoretical models on the basis of measured wave characteristics (frequency sweep rate, mean frequency, and amplitude) show that these very oblique waves are more commonly generated through cyclotron resonance with anisotropic electron streams. However, a second generation mechanism via Landau resonance with low-energy electron beams seems to be also operating on the nightside at L 8.5. Moreover, very oblique lower band chorus waves with large frequency chirping rates or small magnetic field amplitudes are more likely excited via cyclotron resonance, while waves with small frequency chirping rates or large magnetic field amplitudes are preferentially generated through Landau resonance. This comprehensive statistical study provides interesting insight into the possible generation mechanisms of very oblique lower band chorus waves in the Earth's magnetosphere.

  20. Chorus source region localization in the Earth's outer magnetosphere using THEMIS measurements

    Directory of Open Access Journals (Sweden)

    O. Agapitov

    2010-06-01

    Full Text Available Discrete ELF/VLF chorus emissions, the most intense electromagnetic plasma waves observed in the Earth's radiation belts and outer magnetosphere, are thought to propagate roughly along magnetic field lines from a localized source region near the magnetic equator towards the magnetic poles. THEMIS project Electric Field Instrument (EFI and Search Coil Magnetometer (SCM measurements were used to determine the spatial scale of the chorus source localization region on the day side of the Earth's outer magnetosphere. We present simultaneous observations of the same chorus elements registered onboard several THEMIS spacecraft in 2007 when all the spacecraft were in the same orbit. Discrete chorus elements were observed at 0.15–0.25 of the local electron gyrofrequency, which is typical for the outer magnetosphere. We evaluated the Poynting flux and wave vector distribution and obtained chorus wave packet quasi-parallel propagation to the local magnetic field. Amplitude and phase correlation data analysis allowed us to estimate the characteristic spatial correlation scale transverse to the local magnetic field to be in the 2800–3200 km range.

  1. Effect of Chorus Latitudinal Distribution on Evolution of Outer Radiation Belt Electrons

    Institute of Scientific and Technical Information of China (English)

    XIAO Fuliang; LI Junqiu; TANG Lijun; HE Yihua; LI Jiangfan

    2009-01-01

    Primary result on the impact of the latitudinal distribution of whistler-mode chorus upon temporal evolution of the phase space density (PSD) of outer radiation belt energetic electrons was presented.We evaluate diffusion rates in pitch angle and momentum due to a band of chorus frequency distributed at a standard Gaussian spectrum,and solve a 2-D bounce-averaged momentum-pitch-angle Fokker-Planck equation at L=4.5.It is shown that chorus is effective in accelerating electrons and can increase PSD for energy of ~1 MeV by a factor of 10 or more in about one day,which is consistent with observation.Moreover,the latitudinal distribution of chorus has a great impact on the acceleration of electrons.As the latitudinal distribution increases,the efficient acceleration region extends from higher pitch angles to lower pitch angles,and even covers the entire pitch angle region when chorus power reaches the maximum latitude λm=45°.

  2. Emergence of Electron Distributions Related to Banded Chorus Excitation

    Science.gov (United States)

    Liu, K.; Min, K.; Fu, X.; Gary, S. P.; Winske, D.; Cowee, M.

    2014-12-01

    Two-dimensional electromagnetic particle-in-cell simulations are performed to investigate the emergence of electron velocity distributions with an "anisotropy gap" in the radiation belts. Such distributions have been shown to be able to excite banded chorus as anisotropic electrons with T⊥/T||>1 at different T|| , where || and ⊥ denote directions relative to the background geomagnetic field, can drive the whistler anisotropy instability in the upper- and lower-bands, independently. Energy-dependent convection and loss of the electrons in the radiation belts can generally lead to anisotropic electrons which, subsequently, excite whistler waves. As a simplification of reality, the simulations in the present study start with an electron distribution which is constantly anisotropic at all energies. The anisotropic electrons lead to growth of whistlers in the system. The enhanced waves, in turn, scatter the electrons and reduce their anisotropy. Interestingly, the reduction of anisotropy is more dramatic for electrons with intermediate energies. An anisotropy gap arises as a natural consequence of the self-consistent wave-particle interactions and, in the quasi-steady phase of the simulations, produces the banded structure in the spectrum of the enhanced whistler waves.

  3. The SPS Target Station for CHORUS and NOMAD Neutrino Experiments

    CERN Document Server

    Péraire, S; Zazula, J M

    1996-01-01

    A new SPS target station, T9, has been constructed for the CHORUS and NOMAD neutrino experiments at CERN. The heart of the station is the target box : 11 beryllium rods are aligned in a cast aluminium box ; they are cooled by a closed circuit helium gas with adjusted flow to each rod. The box is motorised horizontally and vertically at both ends, to remotely optimise the secondary particle production by aligning the target with the incident proton beam. Radiation protection around the station is guaranteed by more than 100 tons of shielding material (iron, copper, marble). This presentation describes briefly the various components of the target station ; it emphasises particularly the thermal and mechanical calculations which define a safe maximum beam intensity on the beryllium rods. Over the first two years of successful operation, the station has received more than 2€1019 protons at 450 GeV/c, with intensity peaks of 2.8€1013 protons per machine cycle.

  4. Amores intertextuales y parodias posmodernistas: Vicente Molina Foix y la poesía

    Directory of Open Access Journals (Sweden)

    Gala, Candelas

    2010-12-01

    Full Text Available Taking as a point of departure the two poetry books, Los espías del realista y Vanas penas de amor, that Vicente Molina Foix published in 1990 and 1998, respectively, this essay analyzes the role of the ironic glance the poetic speaker casts on the literary, artistic and cultural models firmly rooted in the analytical-referential system of tradition. A careful reading of specific poems from both collections reveals Molina Foix’s use of parodic and inter-textual strategies to debunk the monumentality of such discourses, not so much to ridicule or do away with them, but to show their incongruence in the modern context and at the level of the individual person.Tomando como punto de partida los dos libros de poesía, Los espías del realista y Vanas penas de amor, que Vicente Molina Foix publica en 1990 y 1998, respectivamente, este ensayo analiza el papel de la mirada irónica que el hablante poético dirige a los modelos literarios, artísticos y culturales sólidamente establecidos en el sistema analítico y referencial de la tradición. La lectura atenta de poemas específicos procedentes de ambas colecciones revela el uso que hace Molina Foix de estrategias paródicas e intertextuales para desbancar la monumentalidad de dichos discursos con el fin no tanto de descartarlos y ridiculizarlos, sino más bien de mostrar su incongruencia en el contexto moderno y a nivel de la persona individual.

  5. Dawn chorus variation in East-Asian tropical montane forest birds and its ecological and morphological correlates

    NARCIS (Netherlands)

    Chen, W.-M.; Lee, Y.-F.; Tsai, C.-F.; Yao, C.-T.; Chen, Y.-H.; Li, S.-H.; Kuo, Y.-M.

    2015-01-01

    Many birds in breeding seasons engage in vigorous dawn singing that often turns to a prominent chorus. We examined dawn chorus variation of avian assemblages in a tropical montane forest in Taiwan and tested the hypothesis that onset sequence is affected by eye sizes, foraging heights, and diet of b

  6. Simultaneous disappearances of plasmaspheric hiss, exohiss, and chorus waves triggered by a sudden decrease in solar wind dynamic pressure

    Science.gov (United States)

    Liu, Nigang; Su, Zhenpeng; Gao, Zhonglei; Zheng, Huinan; Wang, Yuming; Wang, Shui; Spence, H. E.; Reeves, G. D.; Baker, D. N.; Blake, J. B.; Funsten, H. O.; Wygant, J. R.

    2017-01-01

    Magnetospheric whistler mode waves are of great importance in the radiation belt electron dynamics. Here on the basis of the analysis of a rare event with the simultaneous disappearances of whistler mode plasmaspheric hiss, exohiss, and chorus triggered by a sudden decrease in the solar wind dynamic pressure, we provide evidences for the following physical scenarios: (1) nonlinear generation of chorus controlled by the geomagnetic field inhomogeneity, (2) origination of plasmaspheric hiss from chorus, and (3) leakage of plasmaspheric hiss into exohiss. Following the reduction of the solar wind dynamic pressure, the dayside geomagnetic field configuration with the enhanced inhomogeneity became unfavorable for the generation of chorus, and the quenching of chorus directly caused the disappearances of plasmaspheric hiss and then exohiss.

  7. Rapid flattening of butterfly pitch angle distributions of radiation belt electrons by whistler-mode chorus

    Science.gov (United States)

    Yang, Chang; Su, Zhenpeng; Xiao, Fuliang; Zheng, Huinan; Wang, Yuming; Wang, Shui; Spence, H. E.; Reeves, G. D.; Baker, D. N.; Blake, J. B.; Funsten, H. O.

    2016-08-01

    Van Allen radiation belt electrons exhibit complex dynamics during geomagnetically active periods. Investigation of electron pitch angle distributions (PADs) can provide important information on the dominant physical mechanisms controlling radiation belt behaviors. Here we report a storm time radiation belt event where energetic electron PADs changed from butterfly distributions to normal or flattop distributions within several hours. Van Allen Probes observations showed that the flattening of butterfly PADs was closely related to the occurrence of whistler-mode chorus waves. Two-dimensional quasi-linear STEERB simulations demonstrate that the observed chorus can resonantly accelerate the near-equatorially trapped electrons and rapidly flatten the corresponding electron butterfly PADs. These results provide a new insight on how chorus waves affect the dynamic evolution of radiation belt electrons.

  8. Signal recognition by frogs in the presence of temporally fluctuating chorus-shaped noise.

    Science.gov (United States)

    Vélez, Alejandro; Bee, Mark A

    2010-10-01

    The background noise generated in large social aggregations of calling individuals is a potent source of auditory masking for animals that communicate acoustically. Despite similarities with the so-called "cocktail-party problem" in humans, few studies have explicitly investigated how non-human animals solve the perceptual task of separating biologically relevant acoustic signals from ambient background noise. Under certain conditions, humans experience a release from auditory masking when speech is presented in speech-like masking noise that fluctuates in amplitude. We tested the hypothesis that females of Cope's gray treefrog (Hyla chrysoscelis) experience masking release in artificial chorus noise that fluctuates in level at modulations rates characteristic of those present in ambient chorus noise. We estimated thresholds for recognizing conspecific advertisement calls (pulse rate=40-50 pulses/s) in the presence of unmodulated and sinusoidally amplitude modulated (SAM) chorus-shaped masking noise. We tested two rates of modulation (5 Hz and 45 Hz) because the sounds of frog choruses are modulated at low rates (e.g., less than 5-10 Hz), and because those of species with pulsatile signals are additionally modulated at higher rates typical of the pulse rate of calls (e.g., between 15-50 Hz). Recognition thresholds were similar in the unmodulated and 5-Hz SAM conditions, and 12 dB higher in the 45-Hz SAM condition. These results did not support the hypothesis that female gray treefrogs experience masking release in temporally fluctuating chorus-shaped noise. We discuss our results in terms of modulation masking, and hypothesize that natural amplitude fluctuations in ambient chorus noise may impair mating call perception.

  9. Observations and modeling of forward and reflected chorus waves captured by THEMIS

    Directory of Open Access Journals (Sweden)

    O. Agapitov

    2011-03-01

    Full Text Available Discrete ELF/VLF chorus emissions are the most intense electromagnetic plasma waves observed in the radiation belts of the Earth's magnetosphere. Chorus emissions, whistler-mode wave packets propagating roughly along magnetic field lines from a well-localized source in the vicinity of the magnetic equator to polar regions, can be reflected at low altitudes. After reflection, wave packets can return to the equatorial plane region. Understanding of whistler wave propagation and reflection is critical to a correct description of wave-particle interaction in the radiation belts. We focus on properties of reflected chorus emissions observed by the THEMIS (Time History of Events and Macroscale Interactions During Substorms spacecraft Search Coil Magnetometer (SCM and Electric Field Instrument (EFI at ELF/VLF frequencies up to 4 kHz at L≥8. We determine the direction of the Poynting flux and wave vector distribution for forward and reflected chorus waves. Although both types of chorus waves were detected near the magnetic equator and have similar, discrete structure and rising tones, reflected waves are attenuated by a factor of 10–30 and have 10% higher frequency than concurrently-observed forward waves. Modeling of wave propagation and reflection using geometrical optics ray-tracing allowed us to determine the chorus source region location and explain observed propagation characteristics. We find that reflected wave attenuation at a certain spatial region is caused by divergence of the ray paths of these non-ducted emissions, and that the frequency shift is caused by generation of the reflected waves at lower L-shells where the local equatorial gyrofrequency is larger.

  10. Nonlinear sub-cyclotron resonance as a formation mechanism for gaps in banded chorus

    CERN Document Server

    Fu, Xiangrong; Dong, Chuanfei; Gary, S Peter

    2015-01-01

    An interesting characteristic of magnetospheric chorus is the presence of a frequency gap at $\\omega \\simeq 0.5\\Omega_e$, where $\\Omega_e$ is the electron cyclotron angular frequency. Recent chorus observations sometimes show additional gaps near $0.3\\Omega_e$ and $0.6\\Omega_e$. Here we present a novel nonlinear mechanism for the formation of these gaps using Hamiltonian theory and test-particle simulations in a homogeneous, magnetized, collisionless plasma. We find that an oblique whistler wave with frequency at a fraction of the electron cyclotron frequency can resonate with electrons, leading to effective energy exchange between the wave and particles.

  11. Preliminary Assessment of Tecplot Chorus for Analyzing Ensemble of CTH Simulations

    Energy Technology Data Exchange (ETDEWEB)

    Agelastos, Anthony Michael [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Stevenson, Joel O. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Attaway, Stephen W. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Peterson, David

    2015-04-01

    The exploration of large parameter spaces in search of problem solution and uncertainty quantifcation produces very large ensembles of data. Processing ensemble data will continue to require more resources as simulation complexity and HPC platform throughput increase. More tools are needed to help provide rapid insight into these data sets to decrease manual processing time by the analyst and to increase knowledge the data can provide. One such tool is Tecplot Chorus, whose strengths are visualizing ensemble metadata and linked images. This report contains the analysis and conclusions from evaluating Tecplot Chorus with an example problem that is relevant to Sandia National Laboratories.

  12. Student Voice Use and Vocal Health during an All-State Chorus Event

    Science.gov (United States)

    Daugherty, James F.; Manternach, Jeremy N.; Price, Kathy K.

    2011-01-01

    This field-based case study documented students' (N = 256) voice use and voice health perceptions during a 3-day all-state high school chorus event through daily surveys, phonation duration data, analysis of rehearsal voice use behaviors, and field notes. Among the primary results are the following: (a) First and final day survey comparisons…

  13. 合唱艺术中的音色问题%The Timbre in Chorus

    Institute of Scientific and Technical Information of China (English)

    杜勇

    2011-01-01

    The art of Chorus is a kind of vocal music manifestation which uses voice to express music works, and a kind of "vocal symphonic music" genre which has very rich expressive capacity. Chorus is a collective music performance and music of multi - vocal - parts. What it emphasizes are balance, harmony, and general character. The present form of chorus focuses on "four mixed vocal parts", requiring that each part has different characteristics, different timbre. The timbre plays an important role in chorus and cannot be neglected.%合唱艺术是用人声来表现音乐作品的声乐表现形式,也是一种表现力极为丰富的“声乐交响”音乐体裁。合唱是集体音乐的表演,是多声部的音乐,强调的是均衡、和谐、共性。现在的合唱形式普遍以“混声四部”合唱为主,要求每个声部都有不同的特点,不同的音色,音色在合唱中起着重要的作用,是不能忽视的。

  14. El “Mundus Subterraneus” de Juan Ignacio Molina o el geólogo como economista

    Directory of Open Access Journals (Sweden)

    Orrego G., Francisco

    2015-12-01

    Full Text Available In general, the work of the Chilean ex Jesuit Juan Ignacio Molina (1740-1829 has not been studied under the light of history of geology. This article attempts to reconstruct the origin and morphology of the ideas in which the Chilean naturalist developed about the internal structure of the Earth. We will see how the geological ideas elaborated by Molina went beyond the scientific reflection. The development of a particular discipline as political economy during the eighteenth century also influenced Juan Ignacio Molina´s thoughts about the internal organization of the Earth, geological processes and the descriptions of the nature of Chilean kingdom in the late eighteenth century.En general, la obra del ex jesuita chileno Juan Ignacio Molina (1740-1829 no ha sido estudiada con profundidad a la luz de la historia de la geología. Este artículo reconstruye el origen y la morfología de parte de las ideas que el naturalista chileno elaboró sobre la estructura interna de la Tierra. Se verá cómo las ideas geológicas desarrolladas por Molina fueron más allá de la simple reflexión científica. El desarrollo de una disciplina particular y novedosa como la economía política, también influyó en el tipo de reflexiones que Juan Ignacio Molina desarrolló sobre la organización interior de la Tierra, los procesos geológicos y las descripciones sobre la naturaleza del Reino de Chile a fines del siglo XVIII.

  15. Domestication in Murtilla (Ugni molinae) Reduced Defensive Flavonol Levels but Increased Resistance Against a Native Herbivorous Insect.

    Science.gov (United States)

    Chacón-Fuentes, Manuel; Parra, Leonardo; Rodriguez-Saona, Cesar; Seguel, Ivette; Ceballos, Ricardo; Quiroz, Andres

    2015-06-01

    Plant domestication can have negative consequences for defensive traits against herbivores, potentially reducing the levels of chemical defenses in plants and consequently their resistance against herbivores. We characterized and quantified the defensive flavonols from multiple cultivated ecotypes with wild ancestors of murtilla, Ugni molinae Turcz, an endemic plant from Chile, at different times of the year, and examined their effects on a native insect herbivore, Chilesia rudis Butler (Lepidoptera: Arctiidae). We hypothesized that domestication results in a decrease in flavonol levels in U. molinae plants, and that this negatively affected C. rudis performance and preference. Ethanolic extracts were made from leaves, stems, and fruit of murtilla plants for flavonol analysis. Flavonols identified were kaempferol, quercetin, rutin, and quercetin 3-D-β-glucoside, the last two being the most abundant. More interestingly, we showed differences in flavonol composition between wild and cultivated U. molinae that persisted for most of the year. Relative amounts of all four flavonols were higher in wild U. molinae leaves; however, no differences were found in the stem and fruit between wild and cultivated plants. In choice and no-choice assays, C. rudis larvae gained more mass on, and consumed more leaf material of, wild as compared with cultivated U. molinae plants. Moreover, when applied to leaves, larvae ate more leaf material with increasing concentrations of each flavonol compound. Our study demonstrates that domestication in U. molinae reduced the amount of flavonols in leaves as well as the performance and preference of C. rudis, indicating that these compounds stimulate feeding of C. rudis.

  16. Singing the Praise of Hong Kong’s Return——A Hong Kong chorus visits Beijing

    Institute of Scientific and Technical Information of China (English)

    1997-01-01

    AN 82-member Hong Kong chorus recently held a concert in Beijing to express their happiness at Hong Kong’s return to China. The Hong Kong Arts Chorus entitled their concert, "When the wind sweeps through, paddy fields produce fragrance to merge both banks--hail the return of Hong Kong." The verse which the chorus had adopted as the title of their concert in Beijing comes from a well-known song on the mainland,"My Motherland." By adopting this famous

  17. Paralelismos y divergencias entre Juan Tenorio de Tirso de Molina y Miguel Páramo, personaje de Juan Rulfo.

    Directory of Open Access Journals (Sweden)

    Herlinda Ramírez-Barradas.

    2009-01-01

    Full Text Available Resumen: En este breve artículo se presentan algunas características de Miguel Páramo que, primero, permiten incluirlo en la larga lista de personajes donjuanescos derivados de la obra de Tirso de Molina y que, además, hacen posible entender su función trágica.Summary: This article presents some of Miguel Páramo's characteristics that, first, allow including him in the long list of prominent Don Juan figures derived from Tirso de Molina's work and, in addition, make it possible to understand his tragic function.

  18. Intoxicación por bromuro de metilo en la Universidad Nacional Agraria la Molina

    OpenAIRE

    Erazo Ramirez, Arturo; Rodríguez Espinosa, Félix

    2004-01-01

    El 21 de setiembre del presente, el Centro Nacional de Salud Ocupacional y Protección del Medio Ambiente (CENSOPAS) del INS es notificado por la Dirección General de Salud Ambiental (DIGESA) sobre la fuga de bromuro de metilo, ocurrido el 20 de setiembre en la Facultad de Industrias Alimentarias de la Universidad Nacional Agraria de La Molina. Un equipo conformado por técnicos de CENSOPAS y de DIGESA realizó la investigación de campo, entrevistaron a las autoridades, profesores, trabaja...

  19. Articulismo en democracia. Las columnas de Antonio Muñoz Molina

    Directory of Open Access Journals (Sweden)

    Natalia Corbellini

    2008-11-01

    Full Text Available The writer's column format related to Muñoz Molina's last novels (Sefarad. Una novela de novelas; Ventanas de Manhattan; Días de diario , where the concept of genre is not clear, they alternate narrative and argumentation, tales and essay. I will analyze the writing of published columns as "Ida y vuelta" in the suplement Babelia of El país, as a format that allows experimentation with the language and the narrator; and simultaneously constructs an ego with the will of style, and for providing a rewatching form of knowledge and thought

  20. Actividad insecticida del polvo de Peumus boldus Molina (Monimiaceae) contra Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae).

    OpenAIRE

    Pizarro, Diana; Gonzalo SILVA; Tapia,Maritza; J. Concepción RODRÍGUEZ; Angélica URBINA; Angel LAGUNES; Candelario SANTILLÁN-ORTEGA; Agustín ROBLES-BERMÚDEZ; Sotero AGUILAR-MEDEL

    2013-01-01

    Se evaluaron las propiedades insecticidas del polvo de follaje de Peumus boldus Molina para el control de adultos y estados inmaduros de S. zeamais. La mayor toxicidad por contacto y fumigación se obtuvo con las concentraciones iguales o mayores a 1,25% registrando una mortalidad superior a 90%. Los tratamientos con mayor mortalidad mostraron también una baja emergencia de insectos adultos (F 1) y menor pérdida de peso del grano. En el control de estados inmaduros la menor F1 se observó en la...

  1. High Resolution Spectral Analysis of Hiss and Chorus Emissions in Ground Based Data

    Science.gov (United States)

    Hosseini Aliabad, S. P.; Golkowski, M.; Gibby, A. R.

    2015-12-01

    The dynamic evolution of the radiation belts is believed to be controlled in large part by two separate but related classes of naturally occurring plasma waves: ELF/VLF chorus and hiss emissions. Although whistler mode chorus has been extensively studied since the first reports by Storey in 1953, the source mechanism and properties are still subjects of active research. Moreover, the origin of plasmaspheric hiss, the electromagnetic emission believed to be responsible for the gap between the inner and outer radiation belts, has been debated for over four decades. Although these waves can be observed in situ on spacecraft, ground-based observing stations can provide orders of magnitude higher data volumes and decades long data coverage essential for certain long-term and statistical studies of wave properties. Recent observational and theoretical works suggest that high resolution analysis of the spectral features of both hiss and chorus emissions can provide insight into generation processes and be used to validate existing theories. Application of the classic Fourier (FFT) technique unfortunately yields a tradeoff between time and frequency resolution. In additional to Fourier spectra, we employ novel methods to make spectrograms with high time and frequency resolutions, independently using minimum variance distortionless response (MVDR). These techniques are applied to ground based data observations of hiss and chorus made in Alaska. Plasmaspheric hiss has been widely regarded as a broadband, structure less, incoherent emission. We quantify the extent to which plasmaspheric hiss can be a coherent emission with complex fine structure. Likewise, to date, researchers have differentiated between hiss and chorus coherency primarily using qualitative "naked eye" approaches to amplitude spectra. Using a quantitative approach to observed amplitude and we present more rigorous classification criteria for these emissions.

  2. Electron acceleration at Jupiter: input from cyclotron-resonant interaction with whistler-mode chorus waves

    Directory of Open Access Journals (Sweden)

    E. E. Woodfield

    2013-10-01

    Full Text Available Jupiter has the most intense radiation belts of all the outer planets. It is not yet known how electrons can be accelerated to energies of 10 MeV or more. It has been suggested that cyclotron-resonant wave-particle interactions by chorus waves could accelerate electrons to a few MeV near the orbit of Io. Here we use the chorus wave intensities observed by the Galileo spacecraft to calculate the changes in electron flux as a result of pitch angle and energy diffusion. We show that, when the bandwidth of the waves and its variation with L are taken into account, pitch angle and energy diffusion due to chorus waves is a factor of 8 larger at L-shells greater than 10 than previously shown. We have used the latitudinal wave intensity profile from Galileo data to model the time evolution of the electron flux using the British Antarctic Survey Radiation Belt (BAS model. This profile confines intense chorus waves near the magnetic equator with a peak intensity at ∼5° latitude. Electron fluxes in the BAS model increase by an order of magnitude for energies around 3 MeV. Extending our results to L = 14 shows that cyclotron-resonant interactions with chorus waves are equally important for electron acceleration beyond L = 10. These results suggest that there is significant electron acceleration by cyclotron-resonant interactions at Jupiter contributing to the creation of Jupiter's radiation belts and also increasing the range of L-shells over which this mechanism should be considered.

  3. The geological perspective of Italy and Chile by Abbot Juan Ignacio Molina between the 18th and 19th centuries La perspectiva geolgica del Abate Juan Ignacio Molina sobre Italia y Chile entre los siglos XVIII y XIX

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    Marco Menichetti

    2011-09-01

    Full Text Available The first geological observations in Chile can be traced to Juan Ignacio Molina, a Jesuit priest who was born in 1740 in Chile and died in 1829 in Bologna, Italy. He received a scholarship education with a strong leaning towards philosophy, the humanities and the sciences at the Jesuit College in Concepcion. In 1767, when all the Jesuits were expelled from Chile and the spanish colonies, he took refuge in Italy, first in Imola and then in Bologna where he taught Greek at the University and later natural sciences at the Archiginnasio. During his stay in Bologna at the end of the 18th century, the Jesuit community continued to play an important role in the teaching of the sciences in spite of the Napoleonic occupation. In Bologna, as early as the 16th century, Ulisse Aldrovandi was developing new concepts in geology with his study and systematic collection of fossils. At the beginning of the 18th century, the naturalist and oceanographer L.F. Marsili and one of the fathers of paleontology, G. Monti, built of Aldrovandi's work and contributed to the growth of the Science Institute and the Natural History Museum in the city. It was in this cultural context that in 1782 Molina published in Italian language the Saggio sulla storia naturale del Chile. The book was divided into four chapters, the first two of which dealt with the earth sciences. In this work Molina repeatedly compares the north-south stretched landscapes, the volcanic activity and the geology of Italy and Chile. His next work, Memorie di storia naturale, was published in 1821 and was based on several lectures given by him at the Bologna Academy of Sciences. It contained fourteen Memoria -lectures- referred to different aspects of the natural sciences and six covered geological topics. In 1815, one of Molina's lectures -later Memoria XIV-, was published under the title Less noticed analogies in three kingdom of nature. In this lecture Molina discussed the similarities between minerals

  4. Phenolic compounds and antioxidant activity of hydroalcoholic extracts of wild and cultivated murtilla (Ugni molinae Turcz.

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    Thalita Riquelme Augusto

    2014-12-01

    Full Text Available Over the last decade a considerable increase in the number of studies addressing the use of antioxidants from natural sources has led to the identification and understanding of the potential mechanisms of biologically active components. This results from the fact that they can be used to replace synthetic antioxidants commonly used in food. Murtilla (Ugni molinae Turcz is a native berry grown in Chile, and in the present study, the phenolic composition and antioxidant activity of its fruits were studied. Hydroalcoholic extracts of dehydrated fruits from two genotypes of murtilla (Ugni molinae Turcz. were produced. Extracts of wild murtilla and 14-4 genotype fruits had 19.35 and 40.28mg GAE/g for Total Phenolic Compounds, 76.48, and 134.35μmol TEAC/g for DPPH, and 157.04 and 293.99 μmol TEAC/g for ABTS, respectively. Components such as quercetin, epicatechin, and gallic, benzoic and hydrocaffeic acids were identified by CG/MS analysis. All of them showed antioxidant activity. Therefore, it is possible to say that the hydroalcoholic extracts of murtilla have antioxidant potential to be used in lipidic food.

  5. Neoclásica y disidente: La Fábula de Polifemo de Francisco Nieto Molina

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    Bonilla Cerezo, Rafael

    2012-06-01

    Full Text Available This article revives the figure of a mid-seventeenth century forgotten ingenious from Cadiz: Francisco Nieto Molina. I try to place him in the central literary debates of the Enlightenment: gongorism trail and Lope de Vega’s tragicomedy. I edit his Fábula de Polifemo («No anuncios de Jano», included in El Fabulero (1764, with a comprehensive analysis. Lastly, I illuminate, through this little romance, both the footsteps of the great poet from Cordoba as well as the keys that make Nieto a «dissident neoclassic».Este artículo resucita la figura de un olvidado ingenio gaditano de mediados del XVIII: Francisco Nieto Molina. Procuro ubicarlo en los principales debates literarios de la Ilustración: la estela del gongorismo y la tragicomedia lopista. Edito con amplio comentario su Fábula de Polifemo («No anuncios de Jano», incluida en El Fabulero (1764. Ilumino, por último, en virtud de este romancillo, tanto las huellas del poeta cordobés como las claves que convierten a Nieto en un «neoclásico disidente».

  6. Solar Wind Compression Generation of Coincident EMIC and Whistler Mode Chorus and Hiss Waves

    Science.gov (United States)

    Halford, Alexa; Mann, Ian

    2016-07-01

    Electron radiation belt dynamics are controlled by the competition of multiple acceleration and loss mechanisms. Electromagnetic ion cyclotron (EMIC), chorus, and hiss waves have all been implicated as potential loss mechanisms of radiation belt electrons along with Chorus waves proposed as a mechanism for accelerating the lower energy source population to MeV energies. Understanding the relative importance of these waves as well as where and under what conditions they are generated is vital to predicting radiation belt dynamics. Although the size of the solar wind compression on 9 January 2014 event discussed here was modest, it has given us an opportunity to observe clearly how a magnetospheric compression can lead to the generation of EMIC, chorus, and hiss waves. The ICME generated shock encountered the Earth's magnetosphere on 9 January 2014 at ~20:11 UT, and the Van Allen Probes observe the coincident excitation of EMIC and Chorus waves outside the plasmasphere, and hiss weaves inside the plasmasphere. As the shock encountered the magnetosphere, an electric field impulse was observed to generate an increase in temperature anisotropy for both ions and electrons. This increased temperature anisotropy led to increased wave growth on both the ion and electron cyclotron branches. The simultaneous generation of multiple types of waves may lead to significant impacts on the acceleration and loss of radiation belt electrons, especially during geomagnetic compressions observed during the substorms, and the storm sudden commencement and main phases of geomagnetic storms, as well as during quiet time sudden impulse events. For example, the excitation of both EMIC and chorus waves at the same place, and at the same time, may complicate studies seeking a causal connection between specific individual plasma wave bursts and observations of particle precipitation into the atmosphere. During this relatively small event BARREL had three payloads in conjunction with the Van

  7. Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst Toxicidad del Boldo, Peumus boldus Molina, sobre Sitophilus zeamais Motschulsky y Tribolium castaneum Herbst

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    Margarita Ortiz U

    2012-09-01

    Full Text Available The maize weevil (Sitophilus zeamais Motschulsky and the red flour beetle (Tribolium castaneum Herbst are two key pests of stored-grain products worldwide. The insecticidal activity of boldo (Peumus boldus Molina powder, liquid ethanolic and hexanic extracts against S. zeamais and T. castaneum were evaluated under laboratory conditions. The evaluated variables were mortality, emergence of adult insects (F1, and grain weight loss. The experimental design was completely randomized. The mortality in S. zeamais was 100% even at the lowest powder concentration (0.5% w/w, whereas emergence of F1 adult insects was 0% and grain weight loss was El gorgojo del maíz (Sitophilus zeamais Motschulsky y el gorgojo castaño de la harina (Tribolium castaneum Herbst son plagas primarias de productos almacenados a nivel mundial. Se evaluó en laboratorio la actividad insecticida de polvo y extractos líquidos etanólicos y hexánicos del boldo (Peumus boldus Molina sobre S. zeamais y T. castaneum. Las variables evaluadas fueron mortalidad y emergencia de insectos adultos (F1 y pérdida de peso de los granos con un diseño experimental completamente al azar. La mortalidad en S. zeamais fue 100%, incluso con la concentración menor (0,5% p/p mientras que la emergencia de insectos adultos y la pérdida de peso de granos de maíz fue < 0,08%. Para T. castaneum sólo las concentraciones de 8 y 16% p/p de polvo causaron una mortalidad de 100%. Los extractos en agua, etanol, y hexano tuvieron un efecto insecticida de 100% en S. zeamais, mientras que en T. castaneum sólo el extracto en etanol alcanzó este valor. Por lo tanto, el polvo y los extractos evaluados de P. boldus presentan actividad insecticida contra S. zeamais y T. castaneum y son promisorios para utilizarse contra éstas y otras plagas de granos almacenados.

  8. Insecticidal Activity of Peumus boldus Molina Essential Oil against Sitophilus zeamais Motschulsky Actividad Insecticida del Aceite Esencial de Peumus boldus Molina sobre Sitophilus zeamais Motschulsky

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    Jessica Betancur R

    2010-09-01

    Full Text Available In stored grains, the main agents diminishing production are insects, which can produce losses between 20% and 80% before harvest or under storage. The insecticidal properties of the essential oil of fresh leaves of Peumus boldus Molina against maize weevil (Sitophilus zeamais Motschulsky adults were determined under laboratory conditions. The highest mortality (100% was achieved at 4% concentration by contact with a treated glass surface. The same concentration in impregnated corn (Zea mays L. grain, resulted in 98.7% mortality. Mortality by fumigant action at 6 h was 100% with 35 µL oil in 0.15 L (air volume. Concentrations 1, 2 and 4% of essential oil produced 0% F1 adult emergence. At 10 d of residual effect, the 4% concentration reached 63.7% mortality. All treatments were repellent to adults of S. zeamais and corn grain germination was not affected by any treatment.Los principales agentes que disminuyen la producción en los granos almacenados son los insectos, antes de la cosecha y en el almacenamiento pueden causar pérdidas de 20 a 80%. Se evaluaron las propiedades insecticidas del aceite esencial de hojas frescas de Peumus boldus Molina para el control de adultos de gorgojo del maíz (Sitophilus zeamais Motschulsky en laboratorio. La mayor mortalidad (100% por contacto con una superficie de vidrio tratada se obtuvo con la concentración de 4%. Esta misma concentración produjo 98,7% de mortalidad en exposición a grano de maíz (Zea mays L. tratado. El efecto fumigante a las 6 h de exposición fue 100% con 35 µL de aceite en 0,15 L (volumen de aire. Con las concentraciones de 1, 2 y 4% de aceite esencial, el porcentaje de emergencia de la F1 fue 0%. A los 10 d de efecto residual se alcanzó 63,7% de mortalidad con la concentración de 4%. Todos los tratamientos fueron repelentes para adultos de S. zeamais y ningún tratamiento afectó la germinación de los granos.

  9. Pitch Angle Distribution Evolution of Energetic Electrons by Whistler-Mode Chorus

    Institute of Scientific and Technical Information of China (English)

    ZHENG Hui-Nan; SU Zhen-Peng; XIONG Ming

    2008-01-01

    We develop a two-dimensional momentum and pitch angle code to solve the typical Fokker-Planck equation which governs wave-particle interaction in space plasmas. We carry out detailed calculations of momentum and pitch angle diffusion coefficients, and temporal evolution of pitch angle distribution for a band of chorus frequency distributed over a standard Gaussian spectrum particularly in the heart of the Earth's radiation belt L = 4.5,where peaks of the electron phase space density are observed. We find that the Whistler-mode chorus can produce significant acceleration of electrons at large pitch angles, and can enhance the phase space density for energies of 0.5~1 MeV by a factor of 10 or above after about 24h. This result can account for observation of significant enhancement in flux of energetic electrons during the recovery phase of a geomagnetic storm.

  10. CHORUS OF MUSHROOMS (CORO DE SETAS) DE HIROMI GOTO: MIGRACIÓN, IDENTIDAD E HISTORIAS.

    OpenAIRE

    Irene, Starace

    2010-01-01

    A partir de los años Setenta del siglo pasado, en Canadá empezó a ser publicada una producción de notable calidad por autores de origen japonés. La novela que voy a analizar, Chorus of mushrooms, de Hiromi Goto, publicada en 1994, es una de estas obras y explora los temas de la migración, del idioma, de las historias como medio para encontrar una identidad.

  11. Tirso de Molina: the Dramatist in the Crisis of the Succession of 1621

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    Alan K.G. Paterson

    2016-11-01

    Full Text Available The crisis is the political upheaval that accompanied the ascent of Olivares to power. Its repercussions on the religious and literary career of Fr. Gabriel Téllez/Tirso de Molina are examined. The primary documents analysed include the two passages in Téllez’s Historia de la Orden de la Merced (one from the early 1630s. the other revised towards the end of the decade containing his hostile criticism of the struggle between the two groups, Lerma’s associates and those of Olivares. This hostility relates to the sentence issued by the Junta de Reformación (1625 and to be meted out as its response to the notorious case of Fr. Gabriel Téllez oka Tirso de Molina, etc. This connection confirms our seeing Tirso as a notable political victim. Yet in the thirties, Tirso’s position is complex. To offset the clear indications of a major if not terminal disruption to his activity as dramatist, the circumstances attendant on the Parte tercera de las comedias (1634 are examined to show how Fr. Gabriel came to the defence of his creation Tirso de Molina, by ensuring his survival in print. The text of the Junta’s sentence informs us of the reason its judges had to silence the dramatist; it concerns his writing plays which are profane and give bad examples. This information invites us to ask to which plays can the harsh sentence of the Junta refer? The reply to this question forms the main theme of the study. It is argued that La venganza de Tamar is a work seriously involved in the turbulent politics of the succession. This argument is preceded by an essential study on the text as authorized by Tirso and subject to the editorial scrutiny of Lucas de Avila. The nexus of images referring to physical hunger that develops into sexual and political hunger is coordinated with the recurring image of the body, presented in a series of progressively morbid pathological states. The human body receives focus in a spectacular way, as a conspicuous object on

  12. Self-to-other ratios measured in an opera chorus in performance

    Science.gov (United States)

    Ternström, Sten; Cabrera, Densil; Davis, Pamela

    2005-12-01

    Four volunteer members of the chorus of Opera Australia, representing four different voice categories, wore binaural pairs of wireless microphones during a penultimate dress rehearsal on the Opera Theater stage of the Sydney Opera House. From the recordings, data were obtained on sound levels and on the self-to-other ratios (SORs). The sound levels were comparable to those found in loud music in chamber choir performance. The average SOR ranged from +10 to +15 dB. Compared to chamber choirs in other types of room, the SOR values were high. On a separate occasion, the stage support parameters ST1 (early reflections) and ST2 (late reflections) were measured over the whole stage area. ST1 was about -16 dB, which is typical for opera stages, and -20 dB for ST2, which is unusually low. It is concluded that the SOR in the opera chorus depends mostly on choir formation, which is highly variable, and that an opera chorus artist generally can hear his or her own voice very well, but little of the others and of the orchestra. This was confirmed by informal listening to the recordings.

  13. Nonlinear dynamics of electrons interacting with oblique whistler mode chorus in the magnetosphere

    Science.gov (United States)

    Hsieh, Yi-Kai; Omura, Yoshiharu

    2017-01-01

    We perform test particle simulations for relativistic electrons interacting with a whistler mode chorus packet propagating at oblique angles. By confirming that the energy transport of oblique lower band chorus is nearly along the ambient magnetic field, we apply the gyroaveraging method in calculating equations of motion of electrons. We trace evolution of a delta function of relativistic electrons in a phase space of kinetic energy and equatorial pitch angle and obtain numerical Green's functions of the chorus wave-particle interactions. Examining the Green's functions in a wide range of kinetic energies, we find that Landau resonance can accelerate MeV electrons efficiently and that higher nth resonances such as n =- 1 and n = 2 also contribute to acceleration of electrons at high equatorial pitch angles (˜70°) and high energies (˜2 MeV). We investigate the rate of energy gain of the cyclotron resonance acceleration and the Landau resonance acceleration and find that the perpendicular component of wave electric field dominates both accelerations for MeV electrons. Furthermore, the proximity between the parallel components of Vp and Vg of oblique whistler mode waves and the nonlinear trapping condition make the interaction time of Landau resonance much longer than that of n = 1 cyclotron resonance, resulting in efficient acceleration of MeV electrons.

  14. Los realismos en Beatus Ille de Antonio Muñoz Molina.

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    Papa Mamour Diop

    2007-07-01

    Full Text Available ENGLISH: This work deals with the current debate about reality and its literary and artistic expression: realism. In Beatus Ille, Antonio Muñoz Molina’s first novel, the fictional universe reveals three kinds of realism: the epic and elegiac realism, the historic realismand the magic realism. SPANISH: En este trabajo, abordamos el actual debate sobre la realidad y su expresión literaria y artística: el realismo. En Beatus Ille, primera novela de Antonio Muñoz Molina, eluniverso novelesco permite percibir tres tipos de realismos: el realismo épico elegiaco, el realismo histórico o contrafactual y el realismo mágico.

  15. Catálogo de la obra de Rafael Barco Molina

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    María Concepción Álvarez

    2013-01-01

    Full Text Available Con este artículo se prentende difundir el catálogo de la obra de Rafael Barco Molina (Fuente Victoria, 1903- Almería, 1995, compositor, profesor, director, y sobre todo la cuna musical almeriense de la postguerra, conocido en Almería como el maestro Barco, obras que pertenecen al patrimonio musical de Almería y que hasta el momento han permanecido refugiadas, en su mayor parte, en archivos privados (familia, amigos y discípulos y/o instituciones de ámbito privado (hermandades y SGAE y en muy pocos casos, en instituciones públicas como es el caso de la Biblioteca Nacional de España, en la que se encuentran seis de los títulos que forma la obra musical de este compositor y el archivo de la Banda Municipal de Almería.

  16. Antioxidant and Vasodilator Activity of Ugni molinae Turcz. (Murtilla) and Its Modulatory Mechanism in Hypotensive Response

    Science.gov (United States)

    Jofré, Ignacio; Pezoa, Cesar; Scheuermann, Erick; Rosalen, Pedro Luiz; Romero, Fernando

    2016-01-01

    Hypertension is a systemic condition with high morbidity and mortality rates worldwide, which poses an increased risk for cardiovascular diseases. In this study, we demonstrated the antioxidant and vasodilator activity of Ugni molinae Turcz. (Murtilla) fruit, a berry native to Chile and proposed models to explain its modulatory mechanism in hypotensive response. Murtilla fruits were cultivated in a germplasm bank and submitted to chemical and biological analyses. The phenolic compounds gallic acid, Catechin, Quercetin-3-β-D-glucoside, Myricetin, Quercetin, and Kaempferol were identified. Murtilla extract did not generate toxic effects on human endothelial cells and had significant antioxidant activity against ROS production, lipid peroxidation, and superoxide anion production. Furthermore, it showed dose-dependent vasodilator activity in aortic rings in the presence of endothelium, whose hypotensive mechanism is partially mediated by nitric oxide synthase/guanylate cyclase and large-conductance calcium-dependent potassium channels. Murtilla fruits might potentially have beneficial effects on the management of cardiovascular diseases. PMID:27688827

  17. Diversity in bottle gourd (Lagenaria siceraria - (Molina Standl. Germplasm from peninsular india

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    Sunil N*, Thirupathi Reddy M, Hameedunnisa B, Vinod Someswara Rao P, Sivaraj N, Kamala V, Prasad R B N, Rao B VS K, Chakrabarty S K

    2014-06-01

    Full Text Available A set of 20 diverse accessions of bottle gourd (Lagenaria siceraria (Molina Standl., exhibited wide range of variability for qualitative and quantitative traits. The seed oil content ranged from 18.6 % (IC446598 to 28.0 % (IC446592. The fatty acid composition of bottle gourd seed oil also varied. Days to 50% flowering and peduncle length had significant positive correlation with seed oil content, whereas inter nodal length had significant negative correlation. The intermodal length and number of primary branches per plant had high positive direct effect on fruit yield per plant. Based on the traits, the accessions clustered into three distinct clusters. The diversity may be exploited for crop improvement and the potential of bottle gourd as edible oil source further explored.

  18. Whistler anisotropy instabilities as the source of banded chorus: Van Allen Probes observations and particle-in-cell simulations.

    Science.gov (United States)

    Fu, Xiangrong; Cowee, Misa M; Friedel, Reinhard H; Funsten, Herbert O; Gary, S Peter; Hospodarsky, George B; Kletzing, Craig; Kurth, William; Larsen, Brian A; Liu, Kaijun; MacDonald, Elizabeth A; Min, Kyungguk; Reeves, Geoffrey D; Skoug, Ruth M; Winske, Dan

    2014-10-01

    Magnetospheric banded chorus is enhanced whistler waves with frequencies ωr particle-in-cell simulations in a magnetized, homogeneous, collisionless plasma to test the hypothesis that banded chorus is due to local linear growth of two branches of the whistler anisotropy instability excited by two distinct, anisotropic electron components of significantly different temperatures. The electron densities and temperatures are derived from Helium, Oxygen, Proton, and Electron instrument measurements on the Van Allen Probes A satellite during a banded chorus event on 1 November 2012. The observations are consistent with a three-component electron model consisting of a cold (a few tens of eV) population, a warm (a few hundred eV) anisotropic population, and a hot (a few keV) anisotropic population. The simulations use plasma and field parameters as measured from the satellite during this event except for two numbers: the anisotropies of the warm and the hot electron components are enhanced over the measured values in order to obtain relatively rapid instability growth. The simulations show that the warm component drives the quasi-electrostatic upper band chorus and that the hot component drives the electromagnetic lower band chorus; the gap at ∼Ω e /2 is a natural consequence of the growth of two whistler modes with different properties.

  19. Whistler anisotropy instabilities as the source of banded chorus: Van Allen Probes observations and particle-in-cell simulations

    Science.gov (United States)

    Fu, Xiangrong; Cowee, Misa M.; Friedel, Reinhard H.; Funsten, Herbert O.; Gary, S. Peter; Hospodarsky, George B.; Kletzing, Craig; Kurth, William; Larsen, Brian A.; Liu, Kaijun; MacDonald, Elizabeth A.; Min, Kyungguk; Reeves, Geoffrey D.; Skoug, Ruth M.; Winske, Dan

    2014-10-01

    Magnetospheric banded chorus is enhanced whistler waves with frequencies ωrcell simulations in a magnetized, homogeneous, collisionless plasma to test the hypothesis that banded chorus is due to local linear growth of two branches of the whistler anisotropy instability excited by two distinct, anisotropic electron components of significantly different temperatures. The electron densities and temperatures are derived from Helium, Oxygen, Proton, and Electron instrument measurements on the Van Allen Probes A satellite during a banded chorus event on 1 November 2012. The observations are consistent with a three-component electron model consisting of a cold (a few tens of eV) population, a warm (a few hundred eV) anisotropic population, and a hot (a few keV) anisotropic population. The simulations use plasma and field parameters as measured from the satellite during this event except for two numbers: the anisotropies of the warm and the hot electron components are enhanced over the measured values in order to obtain relatively rapid instability growth. The simulations show that the warm component drives the quasi-electrostatic upper band chorus and that the hot component drives the electromagnetic lower band chorus; the gap at ˜Ωe/2 is a natural consequence of the growth of two whistler modes with different properties.

  20. Observation of chorus waves by the Van Allen Probes: Dependence on solar wind parameters and scale size

    Science.gov (United States)

    Aryan, Homayon; Sibeck, David; Balikhin, Michael; Agapitov, Oleksiy; Kletzing, Craig

    2016-08-01

    Highly energetic electrons in the Earth's Van Allen radiation belts can cause serious damage to spacecraft electronic systems and affect the atmospheric composition if they precipitate into the upper atmosphere. Whistler mode chorus waves have attracted significant attention in recent decades for their crucial role in the acceleration and loss of energetic electrons that ultimately change the dynamics of the radiation belts. The distribution of these waves in the inner magnetosphere is commonly presented as a function of geomagnetic activity. However, geomagnetic indices are nonspecific parameters that are compiled from imperfectly covered ground based measurements. The present study uses wave data from the two Van Allen Probes to present the distribution of lower band chorus waves not only as functions of single geomagnetic index and solar wind parameters but also as functions of combined parameters. Also the current study takes advantage of the unique equatorial orbit of the Van Allen Probes to estimate the average scale size of chorus wave packets, during close separations between the two spacecraft, as a function of radial distance, magnetic latitude, and geomagnetic activity, respectively. Results show that the average scale size of chorus wave packets is approximately 1300-2300 km. The results also show that the inclusion of combined parameters can provide better representation of the chorus wave distributions in the inner magnetosphere and therefore can further improve our knowledge of the acceleration and loss of radiation belt electrons.

  1. A direct link between chorus emissions and pulsating aurora on timescales from milliseconds to minutes: A case study at subauroral latitudes

    Science.gov (United States)

    Ozaki, Mitsunori; Yagitani, Satoshi; Sawai, Kaoru; Shiokawa, Kazuo; Miyoshi, Yoshizumi; Kataoka, Ryuho; Ieda, Akimasa; Ebihara, Yusuke; Connors, Martin; Schofield, Ian; Katoh, Yuto; Otsuka, Yuichi; Sunagawa, Naoki; Jordanova, Vania K.

    2015-11-01

    A correlation was observed between chorus emissions and pulsating aurora (PA) from observations at Athabasca (L≈4.3) in Canada at 9:00-9:20 UT on 7 February 2013, using an electron multiplying charge-coupled device camera and a VLF loop antenna with sampling rates of 110 Hz and 100 kHz, respectively. Pulsating aurora having a quasiperiodic variation in luminosity and a few hertz modulation was observed together with chorus emissions consisting of a group of successive rising-tone elements. The repetition period and modulation frequency of the PA are in good agreement with those of the modulated chorus. After 9:11 UT, the temporal features of the aurora became aperiodic PA of indistinct modulation. Simultaneously, the rising-tone chorus turned into chorus emissions consisting of numerous rising-tone elements. The equatorial geomagnetic field inhomogeneity calculated using the Tsyganenko 2002 model shows a decreasing trend during the period. This result is consistent with nonlinear wave growth theory having a small geomagnetic field inhomogeneity, which contributes to a decrease in the threshold amplitude to trigger discrete chorus elements. These observations show a close connection between chorus emissions and PA on timescales from milliseconds for generation of discrete chorus elements on the microphysics of wave-particle interaction to minutes for the variations of the geomagnetic field inhomogeneity related with the substorm activity.

  2. Radial variation of whistler-mode chorus: first results from the STAFF/DWP instrument on board the Double Star TC-1 spacecraft

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    O. Santolík

    2005-11-01

    Full Text Available We use the first measurements of the STAFF/DWP instrument on the Double Star TC-1 spacecraft to investigate whistler-mode chorus. We present initial results of a systematic study on radial variation of dawn chorus. The chorus events show an increased intensity at L parameter above 6. This is important for the possible explanation of intensifications of chorus, which were previously observed closer to the Earth at higher latitudes. Our results also indicate that the upper band of chorus at frequencies above one-half of the electron cyclotron frequency disappears for L above 8. The lower band of chorus is observed at frequencies below 0.4 of the electron cyclotron frequency up to L of 11-12. The maxima of the chorus power spectra are found at slightly lower frequencies compared to previous studies. We do not observe any distinct evolution of the position of the chorus frequency band as a function of L. More data of the TC-1 spacecraft are needed to verify these initial results and to increase the MLT coverage.

  3. A Century of Chemical Dynamics Traced through the Nobel Prizes. 1995: Paul Crutzen, Sherwood Rowland, and Mario Molina

    Science.gov (United States)

    van Houten, Josh

    2002-10-01

    The 1995 Nobel Prize was awarded to Paul Crutzen, Sherwood Rowland, and Mario Molina "for their work in atmospheric chemistry, particularly concerning the formation and decomposition of ozone". Collectively, their work established atmospheric chemistry as a major focus at the end of the twentieth century. The results have drawn attention to significant environmental issues in particular, the threat posed to the ozone layer by chlorofluorocarbons.

  4. Chemical profile and antimicrobial activity of Boldo (Peumus boldus Molina) extracts obtained by compressed carbon dioxide extraction

    OpenAIRE

    Mazutti,M.; A J Mossi; CANSIAN,R.L.; M. L. Corazza; Dariva,C.; J. Vladimir Oliveira

    2008-01-01

    This work reports the effects of temperature (20 to 50ºC) and pressure (100 to 250 bar) on the extraction yield, chemical characteristics and antimicrobial activity of extracts of Peumus boldus Molina obtained by compressed carbon dioxide extraction. Results showed that the extraction variables affect the extraction yield and the chemical distribution of the major compounds present in the extracts. The extracts were chemically analyzed with regard to 1,8-cineole, trans-sabinene, pinocarveol, ...

  5. Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus

    Science.gov (United States)

    Foster, J. C.; Erickson, P. J.; Omura, Y.; Baker, D. N.; Kletzing, C. A.; Claudepierre, S. G.

    2017-01-01

    Prompt recovery of MeV (millions of electron Volts) electron populations in the poststorm core of the outer terrestrial radiation belt involves local acceleration of a seed population of energetic electrons in interactions with VLF chorus waves. Electron interactions during the generation of VLF rising tones are strongly nonlinear, such that a fraction of the relativistic electrons at resonant energies are trapped by waves, leading to significant nonadiabatic energy exchange. Through detailed examination of VLF chorus and electron fluxes observed by Van Allen Probes, we investigate the efficiency of nonlinear processes for acceleration of electrons to MeV energies. We find through subpacket analysis of chorus waveforms that electrons with initial energy of hundreds of keV to 3 MeV can be accelerated by 50 keV-200 keV in resonant interactions with a single VLF rising tone on a time scale of 10-100 ms.

  6. Equatorial electron loss by double resonance with oblique and parallel intense chorus waves

    Science.gov (United States)

    Mourenas, D.; Artemyev, A. V.; Agapitov, O. V.; Mozer, F. S.; Krasnoselskikh, V. V.

    2016-05-01

    Puzzling satellite observations of butterfly pitch angle distributions and rapid dropouts of 30-150 keV electrons are widespread in the Earth's radiation belts. Several mechanisms have been proposed to explain these observations, such as enhanced outward radial diffusion combined with magnetopause shadowing or scattering by intense magnetosonic waves, but their effectiveness is mainly limited to storm times. Moreover, the scattering of 30-150 keV electrons via cyclotron resonance with intense parallel chorus waves should be limited to particles with equatorial pitch angle smaller than 70°-75°, leaving unaffected a large portion of the population. In this paper, we investigate the possible effects of oblique whistler mode waves, noting, in particular, that Landau resonance with very oblique waves can occur up to ˜89°. We demonstrate that such very oblique chorus waves with realistic amplitudes can very efficiently nonlinearly transport nearly equatorially mirroring electrons toward smaller pitch angles where nonlinear scattering (phase bunching) via cyclotron resonance with quasi-parallel waves can take over and quickly send them to much lower pitch angles <40°. The proposed double resonance mechanism could therefore explain the formation of butterfly pitch angle distributions as well as contribute to some fast dropouts of 30-150 keV electrons occurring during moderate geomagnetic disturbances at L = 4-6. Since 30-150 keV electrons represent a seed population for a further acceleration to relativistic energies by intense parallel chorus waves during storms or substorms, the proposed mechanism may have important consequences on the dynamics of 100 keV to MeV electron fluxes in the radiation belts.

  7. Evidence for acceleration of outer zone electrons to relativistic energies by whistler mode chorus

    Directory of Open Access Journals (Sweden)

    N. P. Meredith

    Full Text Available We use plasma wave and electron data from the Combined Release and Radiation Effects Satellite (CRRES to investigate the viability of a local stochastic electron acceleration mechanism to relativistic energies driven by gyroresonant interactions with whistler mode chorus. In particular, we examine the temporal evolution of the spectral response of the electrons and the waves during the 9 October 1990 geomagnetic storm. The observed hardening of the electron energy spectra over about 3 days in the recovery phase is coincident with prolonged substorm activity, as monitored by the AE index and enhanced levels of whistler mode chorus waves. The observed spectral hardening is observed to take place over a range of energies appropriate to the resonant energies associated with Doppler-shifted cyclotron resonance, as supported by the construction of realistic resonance curves and resonant diffusion surfaces. Furthermore, we show that the observed spectral hardening is not consistent with energy-independent radial diffusion models. These results provide strong circumstantial evidence for a local stochastic acceleration mechanism, involving the energisation of a seed population of electrons with energies of the order of a few hundred keV to relativistic energies, driven by wave-particle interactions involving whistler mode chorus. The results suggest that this mechanism contributes to the reformation of the relativistic outer zone population during geomagnetic storms, and is most effective when the recovery phase is characterised by prolonged substorm activity. An additional significant result of this paper is that we demonstrate that the lower energy part of the storm-time electron distribution is in steady-state balance, in accordance with the Kennel and Petschek (1966 theory of limited stably-trapped particle fluxes.

    Key words. Magnetospheric physics (storms and substorms, energetic particles, trapped – Space plasma physics (wave

  8. Propagation of whistler-mode chorus to low altitudes: divergent ray trajectories and ground accessibility

    Directory of Open Access Journals (Sweden)

    J. Chum

    2005-12-01

    Full Text Available We investigate the ray trajectories of nonductedly propagating lower-band chorus waves with respect to their initial angle θ0, between the wave vector and ambient magnetic field. Although we consider a wide range of initial angles θ0, in order to be consistent with recent satellite observations, we pay special attention to the intervals of initial angles θ0, for which the waves propagate along the field lines in the source region, i.e. we mainly focus on waves generated with &theta0 within an interval close to 0° and on waves generated within an interval close to the Gendrin angle. We demonstrate that the ray trajectories of waves generated within an interval close to the Gendrin angle with a wave vector directed towards the lower L-shells (to the Earth significantly diverge at the frequencies typical for the lower-band chorus. Some of these diverging trajectories reach the topside ionosphere having θ close to 0°; thus, a part of the energy may leak to the ground at higher altitudes where the field lines have a nearly vertical direction. The waves generated with different initial angles are reflected. A small variation of the initial wave normal angle thus very dramatically changes the behaviour of the resulting ray. Although our approach is rather theoretical, based on the ray tracing simulation, we show that the initial angle θ0 of the waves reaching the ionosphere (possibly ground is surprisingly close - differs just by several degrees from the initial angles which fits the observation of magnetospherically reflected chorus revealed by CLUSTER satellites. We also mention observations of diverging trajectories on low altitude satellites.

  9. Memorial and biographical history of Spain: El jinete polaco by Antonio Muñoz Molina

    Directory of Open Access Journals (Sweden)

    Felipe Oliver Fuentes Kraffczyk

    2012-12-01

    Full Text Available The novel El jinete polaco by Antonio Muñoz Molina is a highly complex work in which the narrator mixes multiple plotlines in an effort to recreate or remember part of his family past. In the process, the collective memory of the town and people of Mágina (an allegoric space that represents the peasant life of the olive growers of southern Spain appears as a rich and contradictory montage of dreams and failures. And in a third level of discourse, the recent past of Spain also emerges through the main historic al events: the civil war, the protracted military government, and the economic development and current consolidation of democracy. In order to achieve this complex and ambitious narrative project, in El jinete polaco time is not represented as uninterrupted historical timeline but as the rich mixture of the simultaneous experiences of different life courses in terms of both values and cultural patterns in order to understand how the rapid social change affects relations between the various age groups. In other words, time is constructed as a synthesis of the biographical dimension within collective memory and major historical events. This paper seeks to point out the similarities and differences between biographical discourse, collective memory and history.

  10. Morphology of the testes and epididymal ducts in the pampas cat Leopardus colocolo (Molina, 1782

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    Mahmoud Mehanna

    Full Text Available ABSTRACT: The pampas cat Leopardus colocolo (Molina, 1782 is a species of the Felidae family, widely distributed in South America, included on CITES Appendix II and classified as Near Threatened on the IUCN Red List, with population trend decreasing. Based on this information, the objective of this study is to describe morphologically the testes and epididymal ducts of pampas cat. The animal, coming from the Federal University of Mato Grosso Zoo, Brazil, had died after anesthesia procedure and the male reproductive system was dissected to collect the testicles. The samples taken were fragmented and histologically examined. From the microscopic analysis of the testes were identified: vaginal and tunica albuginea, formed by dense connective tissue modeled with large amount of collagen fibers. The tunica albuginea fibrous septa emits into the body. The seminiferous tubules are coiled and coated internally by spermatogenic epithelium consisting of Sertoli cells, surrounded by a basement membrane in the presence of myoid cells. The interstitial tissue between the seminiferous tubules, is composed of loose connective tissue, blood and lymph vessels, and Leydig cells in polyhedral shape. The epididymal ducts showed pseudostratified columnar epithelium with secretory cells of which stereocilia design, situated on a basement membrane filled by myoid cells. This epithelium has principal and basal cells, the main cell design stereocilia toward the lumen of the epididymal duct.

  11. Microencapsulation of maqui (Aristotelia chilensis Molina Stuntz leaf extracts to preserve and control antioxidant properties

    Directory of Open Access Journals (Sweden)

    Leslie Vidal J

    2013-03-01

    Full Text Available Microencapsulation technology is an alternative to stabilize stress factors and protect food ingredients or additives, which include environmentally sensitive bioactive principles in protective matrices to increase their functionality and life span. The objective of this research was to study conditions to obtain microcapsules with antioxidant capacity from a maqui (Aristotelia chilensis [Molina] Stuntz, Elaeocarpaceae leaf extract by emulsification and subsequent retention after microencapsulation. Microcapsules were produced by water-in-oil emulsion (W/O using a phase of the aqueous maqui leaf extract and gum arabic, and a liquid vaseline phase. Maqui leaf extract antioxidant capacity was 99.66% compared with the aqueous phase of the emulsion at 94.38 and 93.06% for 5% and 15% gum arabic, respectively. The mean yield of maqui leaf extract microencapsulation with 5% gum arabic varied between 38 and 48%, whereas with 15% gum arabic it was 39%. Once the antioxidant microcapsules were formed, mean extract antioxidant capacity ranged between 30 and 35%. Both yields responded similarly to changes in gum arabic concentrations (5% and 15% in the aqueous phase of the emulsion; 5% concentration produced a microcapsule size from 1.0 to 10 urn. Maqui leaf extracts with high phenolic compound levels, which can be stabilized and protected by the microencapsulation process, produce new natural preservative systems as compared with their synthetic counterparts.

  12. Insecticidal activity of powder and essential oil of Cryptocarya alba (Molina Looser against Sitophilus zeamais Motschulsky

    Directory of Open Access Journals (Sweden)

    Juan J Pinto

    2016-03-01

    Full Text Available Cereals constitute a relevant part of human and domestic animal diet. Under storage conditions, one of the most significant problems of these crops is insect pests as the maize weevil (Sitophilus zeamais Motschulsky. This insect species is usually controlled by means of synthetic insecticides but problems as toxic residues and resistance has led to the search for more friendly control alternatives such as botanical insecticides. The aim of this research was to evaluate, under laboratory conditions, the insecticidal properties of the powder and the essential oil of peumo (Cryptocarya alba [Molina] Looser; Lauraceae leaves against S. zeamais. The variables assessed were toxicity by contact and fumigant activity, adult emergence (F1, repellent effect, and impact on wheat (Triticum aestivum L. seed germination. A completely randomized design was used with five treatments and 10 replicates. The higher mortality levels were obtained at 80 g powder kg-1 grain and 40 mL essential oil kg-1 grain of C. alba; in both cases, the mortality of adult S. zeamais surpassed 80%. The emergence of adults S. zeamais (F1 was reduced by 100% at 80 g powder kg-1 grain and 40 mL essential oil kg-1 grain. Germination of wheat seeds treated with C. alba powder and essential oil was not affected. Both, the powder and the oil treatments showed repellent effect, but not fumigant activity.

  13. Inheritance of warty fruit texture and fruit color in bottle gourd [Lagenaria siceraria (Molina Standl.

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    Mladenović Emina

    2013-01-01

    Full Text Available Bottle gourd [Lagenaria siceraria (Molina Standl.] is one of the most interesting species in the plant kingdom, due to the diversity of fruit shapes, sizes and ways of use. Warty genotypes are rare compared to non warty genotypes. Considering unusual external appearance of warty fruits, we focused our research on the investigation of its inheritance patterns. By crossing different bottle gourd phenotypes, we studied the mode of inheritance and identified and verified genes responsible for the fruit skin color and warty phenotype segregation. Two parental lines, LAG 70 (with warty fruit of light green color and LAG 71 (smooth fruit, variegated, F1, F2 and backcrosses populations along with both parents were evaluated. Genetic analysis indicated that warty fruit type is a result of monogenic inheritance, whereby the warty fruit type is dominant (Wt trait over to the non-warty fruit type (wt. The mode of inheritance of fruit color was controlled by recessive epistasis, with a ratio of 9 variegated (A-, B-, 3 dark green colored (aaB- and 4 light green colored (aabb fruits in the F2 generation.

  14. Antioxidant and Vasodilator Activity of Ugni molinae Turcz. (Murtilla and Its Modulatory Mechanism in Hypotensive Response

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    Ignacio Jofré

    2016-01-01

    Full Text Available Hypertension is a systemic condition with high morbidity and mortality rates worldwide, which poses an increased risk for cardiovascular diseases. In this study, we demonstrated the antioxidant and vasodilator activity of Ugni molinae Turcz. (Murtilla fruit, a berry native to Chile and proposed models to explain its modulatory mechanism in hypotensive response. Murtilla fruits were cultivated in a germplasm bank and submitted to chemical and biological analyses. The phenolic compounds gallic acid, Catechin, Quercetin-3-β-D-glucoside, Myricetin, Quercetin, and Kaempferol were identified. Murtilla extract did not generate toxic effects on human endothelial cells and had significant antioxidant activity against ROS production, lipid peroxidation, and superoxide anion production. Furthermore, it showed dose-dependent vasodilator activity in aortic rings in the presence of endothelium, whose hypotensive mechanism is partially mediated by nitric oxide synthase/guanylate cyclase and large-conductance calcium-dependent potassium channels. Murtilla fruits might potentially have beneficial effects on the management of cardiovascular diseases.

  15. Book review: A chorus of cranes: The cranes of North America and the world

    Science.gov (United States)

    Pearse, Aaron T.

    2017-01-01

    Cranes (Gruidae) are widely distributed throughout the world, have lived on Earth for several million years, and currently reside on five continents. Archaeological evidence and historical references suggest that humans have interacted with and been captivated by cranes for many thousands of years (e.g., Leslie 1988, Muellner 1990). A glimpse of our reverence for these birds can be found in A Chorus of Cranes by Paul A. Johnsgard, with photographs by Thomas D. Mangelsen. Many species of cranes are currently identified as threatened or endangered, and their future will likely rest in the hands of humans; this book presents their plight and some of the measures that have been taken to conserve them. Dr. Johnsgard, an emeritus professor at the University of Nebraska-Lincoln, is a prolific writer, having written more than 60 books in ornithology and other topics. This book serves as the latest update of previous efforts concerning crane biology, conservation, and management. A review without making comparisons to his past works is difficult, yet this assessment will primarily focus on the content of the current book, with little reference to past endeavors.A Chorus of Cranes: The Cranes of North America and the World by Paul A. Johnsgard. 2015. University Press of Colorado, Boulder, CO, USA. x + 208 pp., 38 color photographs, 41 figures. ISBN 978-1-60732-436-2. $23.95 (Ebook). ISBN 978-1-60732-436-9.

  16. Dynamic Evolution of Outer Radiation Belt Electrons due to Whistler-Mode Chorus

    Institute of Scientific and Technical Information of China (English)

    SU Zhen-Peng; ZHENG Hui-Nan; XIONG Ming

    2009-01-01

    Following our preceding work,we perform a further study on dynamic evolution of energetic electrons in the outer radiation belt L = 4.5 due to a band of whistler-mode chorus frequency distributed over a standard Gaussian spectrum.We solve the 2D bounce-averaged Fokker-Planck equation by allowing incorporation of cross diffusion rates.Numerical results show that whistler-mode chorus can be effective in acceleration of electrons at large pitch angles,and enhance the phase space density for energies of about 1MeV by a factor of 102 or above in about one day,consistent with observation of significant enhancement in flux of energetic electrons during the recovery phase of a geomagnetic storm.Moreover,neglecting cross diffusion often leads to overestimates of the phase space density evolution at large pitch angle by a factor of 5-10 after one day,with larger errors at smaller pitch angle,suggesting that cross diffusion also plays an important role in wave-particle interaction.

  17. White-throated sparrows alter songs differentially in response to chorusing anurans and other background noise.

    Science.gov (United States)

    Lenske, Ariel K; La, Van T

    2014-06-01

    Animals can use acoustic signals to attract mates and defend territories. As a consequence, background noise that interferes with signal transmission has the potential to reduce fitness, especially in birds that rely on song. While much research on bird song has investigated vocal flexibility in response to urban noise, weather and other birds, the possibility of inter-class acoustic competition from anurans has not been previously studied. Using sound recordings from central Ontario wetlands, we tested if white-throated sparrows (Zonotrichia albicolis) make short-term changes to their singing behaviour in response to chorusing spring peepers (Pseudacris crucifer), as well as to car noise, wind and other bird vocalizations. White-throated sparrow songs that were sung during the spring peeper chorus were shorter with higher minimum frequencies and narrower bandwidths resulting in reduced frequency overlap. Additionally, sparrows were less likely to sing when car noise and the vocalizations of other birds were present. These patterns suggest that birds use multiple adjustment strategies. This is the first report to demonstrate that birds may alter their songs differentially in response to different sources of noise. This article is part of a Special Issue entitled: insert SI title.

  18. The geological perspective of Italy and Chile by Abbot Juan Ignacio Molina between the 18th and 19th centuries La perspectiva geolgica del Abate Juan Ignacio Molina sobre Italia y Chile entre los siglos XVIII y XIX

    OpenAIRE

    Marco Menichetti

    2011-01-01

    The first geological observations in Chile can be traced to Juan Ignacio Molina, a Jesuit priest who was born in 1740 in Chile and died in 1829 in Bologna, Italy. He received a scholarship education with a strong leaning towards philosophy, the humanities and the sciences at the Jesuit College in Concepcion. In 1767, when all the Jesuits were expelled from Chile and the spanish colonies, he took refuge in Italy, first in Imola and then in Bologna where he taught Greek at the University and la...

  19. El abate Juan Ignacio Molina: una vida dedicada a la historia natural y civil del reino de Chile Abbot Juan Ignacio Molina: A life devoted to the natural and civil history of Chile

    OpenAIRE

    2011-01-01

    Juan Ignacio Molina (1740-1829) naci cerca de Talca, Chile, y falleci en Bolonia, Italia. Es el primer cientfico chileno. Desde pequeo se interes por la naturaleza. Se educ con la Compaa de Jess en diversos lugares de Chile central, lo que le permiti conocer su geografa, fauna, flora y poblacin. Con 15 aos ingres a la Compaa. En 1767, abandon el pas al ser expulsada esta orden de espaa y sus dominios. Se radic en los Estados Pontificios, donde se orden de sacerdote y permaneci hasta su muerte...

  20. Robertsonian chromosome polymorphism of Akodon molinae (Rodentia: Sigmodontinae: analysis of trivalents in meiotic prophase Polimorfismo cromosómico Robertsoniano de Akodon molinae (Rodentia: Sigmodontinae

    Directory of Open Access Journals (Sweden)

    RAÚL FERNÁNDEZ-DONOSO

    2001-03-01

    Full Text Available Akodon molinae (with 2n = 42-43-44 and an FN = 44 shows a remarkable polymorphism of chromosome 1 in natural and laboratory populations. Specimens 2n = 42, named single homozygotes (SH, have a chromosome pair 1 formed by two large metacentric chromosomes. Specimens 2n = 3, heterozygotes (Ht, have one chromosome 1 and two medium-sized subtelocentric chromosomes, 1a and 1b, which are homologous with the long and short arms of chromosome 1 respectively. Specimens 2n = 44 are double homozygotes (DH, with just two pairs of medium-sized subtelocentric chromosomes, 1a and 1b. Analysis of meiotic metaphases I and II showed that anomalous segregation occurs more frequently in spermatocytes carrying the 1a and 1b chromosomes. This would disturb gametogenesis and other reproductive and developmental processes, producing a marked decrease in viability of DH individuals. There is, as yet, no satisfactory explanation for these phenomena. To investigate structural elements which might explain such segregational anomalies, we have studied bivalent and trivalent synapsis in pachytene spermatocytes from SH, Ht and DH specimens. Of a total of 80 spermatocyte nuclei microspreads, the following results were obtained: of 16 microspreads from two SH individuals, 20 autosomic bivalents plus the XY bivalent were observed; of 48 microspreads from three Ht individuals, 19 autosomic bivalents, 1 trivalent and an XY bivalent were seen; and of the 16 microspreads from two DH individuals, 21 autosomic bivalents plus the XY bivalent were found. Trivalents analysed showed complete pairing between the short arms of 1a and 1b, and having an apparently normal synaptonemal complex (SC with lengths of 1 and 2.8 µm. The trivalent SC showed three telomeric ends, corresponding to arms: q1 and q1a; p1 and q1b; and p1a and p1b, with attachment plates to the nuclear envelope of normal organisation. None of the trivalents showed asynapsis or desynapsis between p1a and p1b, nor an

  1. Avaliação da qualidade de folhas de boldo-do-chile (Peumus boldus Molina) comercializadas em Curitiba, PR

    OpenAIRE

    M.C.S. Barbosa; Belletti,K.M. da S.; Corrêa,T.F.; C.A. de M. Santos

    2001-01-01

    Foi realizada a avaliação da qualidade de amostras de boldo-do-chile (Peumus boldus Molina) comercializadas na Região Metropolitana de Curitiba. Os resultados mostraram que todas as amostras são autênticas, mas os resultados das análises físico-químicas mostraram-se discrepantes em relação aos parametros da Farmacopéia Brasileira e outras bibliografias de referência.Samples of boldo-do-chile (Peumus boldus Molina) commercialized at the metropolitan area of Curitiba/PR were evaluated to establ...

  2. Magnetospherically reflected chorus waves revealed by ray tracing with CLUSTER data

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    M. Parrot

    Full Text Available This paper is related to the propagation characteristics of a chorus emission recorded simultaneously by the 4 satellites of the CLUSTER mission on 29 October 2001 between 01:00 and 05:00 UT. During this day, the spacecraft (SC 1, 2, and 4 are relatively close to each other but SC3 has been delayed by half an hour. We use the data recorded aboard CLUSTER by the STAFF spectrum analyser. This instrument provides the cross spectral matrix of three magnetic and two electric field components. Dedicated software processes this spectral matrix in order to determine the wave normal directions relative to the Earth’s magnetic field. This calculation is done for the 4 satellites at different times and different frequencies and allows us to check the directions of these waves. Measurements around the magnetic equator show that the parallel component of the Poynting vector changes its sign when the satellites cross the equator region. It indicates that the chorus waves propagate away from this region which is considered as the source area of these emissions. This is valid for the most intense waves observed on the magnetic and electric power spectrograms. But it is also observed on SC1, SC2, and SC4 that lower intensity waves propagate toward the equator simultaneously with the SC3 intense chorus waves propagating away from the equator. Both waves are at the same frequency. Using the wave normal directions of these waves, a ray tracing study shows that the waves observed by SC1, SC2, and SC4 cross the equatorial plane at the same location as the waves observed by SC3. SC3 which is 30 minutes late observes the waves that originate first from the equator; meanwhile, SC1, SC2, and SC4 observe the same waves that have suffered a Lower Hybrid Resonance (LHR reflection at low altitudes (based on the ray tracing analysis and now return to the equator at a different location with a lower intensity. Similar phenomenon is observed when all SC are on the other side

  3. Alonso Quesada, Agustín Millares Carlo, Argote de Molina y el solar norte de la catedral

    OpenAIRE

    Antonio Henríquez Jiménez

    2001-01-01

    Se presentan dos textos: una carta de don Agustín Millares Carlo y una "Crónica de la ciudad" de Alonso Quesada, que no aparece en su Obra Completa, en los que se habla del solar norte de la catedral de Las Palmas y del enterramiento en él del historiador y genealogista sevilano Gonzalo Argote de Molina.Two Texts are presented: A letter from D. Agustín Millares Carlo and a "Crónica de la ciudad" from Alonso Quesasda, that doesn't appear in the Obra Completa from Alonso Quesada in which is spo...

  4. El abate Juan Ignacio Molina: una vida dedicada a la historia natural y civil del reino de Chile

    OpenAIRE

    Reynaldo Charrier; Francisco Herv

    2011-01-01

    Juan Ignacio Molina (1740-1829) naci cerca de Talca, Chile, y falleci en Bolonia, Italia. Es el primer cientfico chileno. Desde pequeo se interes por la naturaleza. Se educ con la Compaa de Jess en diversos lugares de Chile central, lo que le permiti conocer su geografa, fauna, flora y poblacin. Con 15 aos ingres a la Compaa. En 1767, abandon el pas al ser expulsada esta orden de espaa y sus dominios. Se radic en los Estados Pontificios, donde se orden de sacerdote y permaneci hasta su muerte...

  5. Narrar para contarlo: Labrando la memoria histórica en Beatus ille de Antonio Muñoz Molina

    Directory of Open Access Journals (Sweden)

    Natalia Corbellini

    2004-11-01

    Full Text Available This essay attempts to analyze Muñoz Molina's discourse as a form of "new memory" of the facts and events prevailing in twentieth-century Spain. In his text, the author confronts the ®heroic history¼ of the Civil War and its poets, with the private life-stories of his characters. Beatus ille narrate a heroic discourse on the biography and works of a dark and forgotten writer of the Generación del 27, but the voice, placed emphatically in 1968, omits the moment in which the novel is written and published.

  6. Effect of boldo (Peumus boldus Molina) infusion on lipoperoxidation induced by cisplatin in mice liver.

    Science.gov (United States)

    Fernández, J; Lagos, P; Rivera, P; Zamorano-Ponce, E

    2009-07-01

    Peumus boldus Molina (Monimiaceae), commonly referred to as 'boldo', is used in traditional Chilean medicine to treat hepatic and gastrointestinal diseases. Its leaves are rich in antioxidant compounds, principally alkaloids and flavonoids. This study evaluates the protective effect of a complete boldo leaf infusion on lipoperoxidation (MDA determination at 532 nm) induced by cisplatin in mice liver. To determine if the observed effect can be explained by the action of boldine or catechin, each compound was studied separately. The mice were divided into 8 groups (n = 6): (I) not treated; (II) treated with cisplatin 6 mg/Kg b.w.; (III) treated with boldo leaf infusion 5%; (IV) pretreated with boldo leaf infusion 5% and treated with cisplatin 6 mg/Kg b.w.; (V) treated with boldine 50 mg/Kg b.w.; (VI) pretreated with boldine 50 mg/Kg b.w. and treated with cisplatin 6 mg/kg.b.w.; (VII) treated with catechin; and (VIII) pretreated with catechin 50 mg/Kg b.w. and treated with cisplatin 6 mg/Kg b.w. As expected, the treatment with cisplatin significantly increased (p < 0.01) lipoperoxidation in comparison with the non-treated group. Pretreatment with boldo leaf infusion significantly diminished (p < 0.05) the lipoperoxidation induced by cisplatin with respect to the animals not pretreated with the infusion. The pretreatments with boldine and catechin significantly diminished (p < 0.05) the lipoperoxidation induced by cisplatin with respect to the group treated only with cisplatin. The results suggest that the boldo infusion is acting as a protector with respect to the oxidative hepatic damage caused by cisplatin, and that this protective ability would be due to the presence in the infusion of the natural antioxidants boldine and principally catechin. These findings suggest the potential use of the infusion as a chemoprotector.

  7. 浅谈合唱指挥教学的改革与创新%The reform and innovation of chorus direction teaching

    Institute of Scientific and Technical Information of China (English)

    应玫

    2012-01-01

      The reform and innovation of teaching of chorus and conducting, has important significance to promote the teaching of chorus and conducting level. This paper first analyzes the main problems in current teaching of chorus and conducting, and then an antidote against the disease, to put forward corresponding countermeasures on how to reform and innovate the chorus teaching.%  改革与创新合唱指挥教学,对于促进合唱指挥教学水平的提升具有重要意义。本文首先分析了当前合唱指挥教学中存在的主要问题,然后对症下药,对如何改革与创新合唱指挥教学提出了相应对策

  8. Decrease of VLF transmitter signal and Chorus-whistler waves before l'Aquila earthquake occurrence

    Directory of Open Access Journals (Sweden)

    M. Y. Boudjada

    2010-07-01

    Full Text Available We investigate the VLF emissions observed by the Instrument Champ Electrique (ICE experiment onboard the DEMETER micro-satellite. We analyze intensity level variation 10 days before and after the occurrence of l'Aquila earthquake (EQ. We found a clear decrease of the VLF received signal related to ionospheric whistler mode (mainly Chorus emission and to signal transmitted by the DFY VLF station in Germany, few days (more than one week before the earthquake. The VLF power spectral density decreases of more than two orders of magnitude until the EQ, and it recovers to normal levels just after the EQ occurrence. The geomagnetic activity is principally weak four days before EQ and increases again one day before l'Aquila seismic event. Our results are discussed in the frame of short- and long-terms earthquakes prediction focusing on the crucial role of the magnetic field of the Earth.

  9. Chorus-Driven Outer Radiation Belt Electron Dynamics at Different L-Shells

    Institute of Scientific and Technical Information of China (English)

    ZHANG Sai; XIAO Fu-Liang

    2010-01-01

    @@ Energetic outer radiation belt electron phase space density(PSD)evolution due to interaction with whistler-mode chorus at different L-shells is investigated by solving the diffusion equation including cross diffusion terms.It is found that the difference of diffusion rates for different L-shells occurs primarily at pitch angles 0°-50° and around 90°.In particular,diffusion rates for L = 6.5 are found to be 5-10 times larger than that for L = 3.5 at these pitch angles.In the presence of cross terms,PSD for~MeV electrons after 24 h decreases by about 25,12,10 and 8 times at L = 3.5,4.5,5.5 and 6.5 near the loss cone,and increases by about 55,45,30 and 20 times at larger pitch angles,respectively.After 24 h,the ratios between~MeV electron PSDs from simulations without and with cross diffusion at L = 3.5,4.5,5.5 and 6.5 are about 350,600,800 and 800 near the loss cone,and become 5,5.5,6.5 and 8 at pitch angle 90°,respectively.These results demonstrate that neglect of cross diffusion generally results in the overestimate of PSD,and the cross diffusion plays a more significant role in the resonant interaction between chorus waves and outer radiation belt electrons at larger L.

  10. Comparison of the onset of dawn chorus of bulbuls and house sparrows in two different geographical locations: effect of climate, noise and light pollution

    Directory of Open Access Journals (Sweden)

    Nail M. Hasan

    2011-04-01

    Full Text Available The onset of dawn chorus was studied for a period of fourteen months for bulbuls (Pycnonotidae and house sparrows (Passer domesticus in two different geographical locations. One is very quiet and semi lit place in the suburbs of the small Mediterranean city of Tulkarem/Palestinian Authority. The other location is comparatively noisy and very well lit place in the Ar-Rayyan urban district of the city of Riyadh/ Saudi Arabia where desert climate prevails. This study is the first of its kind and clearly shows that the timing of dawn chorus is similar for autumn and winter seasons in both locations but major differences were observed from February until September between the two locations. It can be concluded that very early timing of dawn chorus during spring / summer for the Riyadh location cannot only be attributed to breeding season and is temperature dependent (strong positive correlation, r>0.6. The similarities for autumn and early winter between the two locations is very interesting in that it is not in agreement with the notion that big cities (urbanization influence the timing of dawn chorus due to noise and light pollution. This emphasizes that dawn chorus is a complex process and that change in the onset and pattern of dawn chorus can not merely be attributed to one variable such as noise or light pollution alone.

  11. Feeding habits of Molina's hog-nosed skunk, Conepatus chinga (Carnivora: Mephitidae in the extreme south of Brazil

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    Felipe Bortolotto Peters

    2011-04-01

    Full Text Available Feeding habits of the Molina's hog-nosed skunk, Conepatus chinga (Molina, 1782 in the extreme south of Brazil. We analyzed 60 stomachs of road-kills of C. chinga in the extreme south of Brazil. The contents revealed 808 prey parts, including invertebrates (frequency of occurrence - FO = 96.7% and relative abundance - RA = 94.7%, vertebrates (FO = 18.3% and RA = 2.8% and plants (FO = 31.7% and RA = 2.3%. We identified 18 kinds of food, including the invertebrate order Coleoptera which showed the highest FO (86.7% and RA (75.2%. Other important orders were Orthoptera (FO = 35% and RA = 10.4% and Araneae (FO = 41.7% and RA = 4%. The combination of occurrence and abundance of the preys consumed allowed classifying C. chinga as an omnivorous with a predominance of insects, especially Coleoptera, consuming other invertebrates, vertebrates and plants in smaller numbers. Behavioral and morphological adaptations of C. chinga favor the predation of insects, which are preys that offer low physical resistance and are available in all terrestrial environments.

  12. [Comparative anatomical study of the ventral brain arteries of the Pudu pudu (Molina, 1782) with those of the cow].

    Science.gov (United States)

    Schweitzer-Delaunoy, W

    1997-06-01

    Comparative anatomical study of the ventral brain arteries of the Pudú pudu (Molina, 1782) with those of the cow. A comparison using the corrosion method was made between Pudú pudu (Molina, 1782) ventral brain arteries and those of the cow. The Pudú's Rete mirabile epidurale rostrale (Nomina Anatomica Veterinaria, 1994) is ventrally formed by branches of the A. maxillaris, and caudally formed by the A. vertebralis. The Hypophysis is surrounded by the Rete mirabile rostrale. The lateral parts are rostrally joined to that gland by a thin vascular bridge and caudally by thick arteries. The Pudú's Circulus arteriosus cerebri asymmetrical, that is, on the right side the A. cerebri rostralis ends in the A. cerebri media. The left-side A. cerebri rostralis irrigates every rostral portion of the encephalon. In the cow, practically the same arteries come out of the Circulus arteriosus cerebri, which is not asymmetrical. The A. cerebri caudalis comes first out of the A. communicans caudalis and then the branches for the Pons, and finally the A. cerebelli rostralis. In this species, there are arterial blocks that are not present in Pudú.

  13. Luis de Molina y la esclavitud de los negros africanos en el siglo XVI. Principios doctrinales y conclusiones

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    García Añoveros, Jesús María

    2000-08-01

    Full Text Available One of the most important consequences of Portuguese discoveries was the black slavery business. A most reputed theologist and jurist of the time, Juan de Molina, who had a first-hand knowledge of the subject, made a thorough analysis of the justness of slavery from a Theology and Law perspective, while showing himself opposed to the same. His doctrine set basis for future thought and he must be considered as the first great tratadist on black slavery.

    Una de las consecuencias más importantes de los descubrimientos portugueses en África fue el negocio de los esclavos negros. Luis de Molina, uno de los teólogos y juristas más importantes de su época y con un gran conocimiento del asunto, trató el tema de la licitud de los esclavos negros en amplitud, analizándolo desde la perspectiva de la teología y del derecho, sin omitir su opinión personal contraria a dicha esclavitud. Su doctrina creó escuela y debe ser considerado como el primer gran tratadista de la esclavitud de los negros.

  14. Chorus wave-normal statistics in the Earth's radiation belts from ray tracing technique

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    H. Breuillard

    2012-08-01

    Full Text Available Discrete ELF/VLF (Extremely Low Frequency/Very Low Frequency chorus emissions are one of the most intense electromagnetic plasma waves observed in radiation belts and in the outer terrestrial magnetosphere. These waves play a crucial role in the dynamics of radiation belts, and are responsible for the loss and the acceleration of energetic electrons. The objective of our study is to reconstruct the realistic distribution of chorus wave-normals in radiation belts for all magnetic latitudes. To achieve this aim, the data from the electric and magnetic field measurements onboard Cluster satellite are used to determine the wave-vector distribution of the chorus signal around the equator region. Then the propagation of such a wave packet is modeled using three-dimensional ray tracing technique, which employs K. Rönnmark's WHAMP to solve hot plasma dispersion relation along the wave packet trajectory. The observed chorus wave distributions close to waves source are first fitted to form the initial conditions which then propagate numerically through the inner magnetosphere in the frame of the WKB approximation. Ray tracing technique allows one to reconstruct wave packet properties (electric and magnetic fields, width of the wave packet in k-space, etc. along the propagation path. The calculations show the spatial spreading of the signal energy due to propagation in the inhomogeneous and anisotropic magnetized plasma. Comparison of wave-normal distribution obtained from ray tracing technique with Cluster observations up to 40° latitude demonstrates the reliability of our approach and applied numerical schemes.

  15. El abate Juan Ignacio Molina: una vida dedicada a la historia natural y civil del reino de Chile Abbot Juan Ignacio Molina: A life devoted to the natural and civil history of Chile

    Directory of Open Access Journals (Sweden)

    Reynaldo Charrier

    2011-09-01

    Full Text Available Juan Ignacio Molina (1740-1829 naci cerca de Talca, Chile, y falleci en Bolonia, Italia. Es el primer cientfico chileno. Desde pequeo se interes por la naturaleza. Se educ con la Compaa de Jess en diversos lugares de Chile central, lo que le permiti conocer su geografa, fauna, flora y poblacin. Con 15 aos ingres a la Compaa. En 1767, abandon el pas al ser expulsada esta orden de espaa y sus dominios. Se radic en los Estados Pontificios, donde se orden de sacerdote y permaneci hasta su muerte. All ense ciencias naturales y produjo su obra cientfica: Compendio de la historia geogrfica, natural y civil del reino de Chile de 1776, una versin aumentada, Ensayo sobre la historia natural de Chile de 1782 y una segunda en 1810. En ellas, abord aspectos climticos, botnicos, geolgicos, zoolgicos, mineralgicos y geogrficos del territorio. Describi el terremoto de Concepcin, las erupciones del Villarrica y Peteroa, e hizo referencia a recursos minerales. Diferenci cuatro unidades litoestratigrficas para Chile central. Clasific plantas y animales siguiendo los criterios de Linneo. En una de sus 14 memorias, Analogas menos observadas de los tres reinos de la Naturaleza, sin podrselo calificar de evolucionista, se destaca su intento de integracin entre los "seres" de los tres reinos, y en Sobre la propagacin del gnero humano en las diversas partes de la tierra, propuso tres vas diferentes para el poblamiento de Amrica. En 1802, ingres a la Academia de Ciencias de Bolonia.Juan Ignacio Molina (1740-1829, born next to Talca, Chile, and dead in Bologna, Italy, is the first Chilean scientist. His education in establishments of the Society of Jesus, in several localities of central Chile, allowed him to learn about its geography, flora, fauna, and population. At 15 years old he entered the Society. In 1767, he left Chile when the Jesuits were expelled from the spanish territories. In Bologna he produced his scientific contribution. Molina published in 1776 the first

  16. Intensification of dayside diffuse auroral precipitation: contribution of dayside Whistler-mode chorus waves in realistic magnetic fields

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    R. Shi

    2012-09-01

    Full Text Available Compared to the recently improved understanding of nightside diffuse aurora, the mechanism(s responsible for dayside diffuse aurora remains poorly understood. While dayside chorus has been thought as a potential major contributor to dayside diffuse auroral precipitation, quantitative analyses of the role of chorus wave scattering have not been carefully performed. In this study we investigate a dayside diffuse auroral intensification event observed by the Chinese Arctic Yellow River Station (YRS all-sky imagers (ASI on 7 January 2005 and capture a substantial increase in diffuse auroral intensity at the 557.7 nm wavelength that occurred over almost the entire ASI field-of-view near 09:24 UT, i.e., ~12:24 MLT. Computation of bounce-averaged resonant scattering rates by dayside chorus emissions using realistic magnetic field models demonstrates that dayside chorus scattering can produce intense precipitation losses of plasma sheet electrons on timescales of hours (even approaching the strong diffusion limit over a broad range of both energy and pitch angle, specifically, from ~1 keV to 50 keV with equatorial pitch angles from the loss cone to up to ~85° depending on electron energy. Subsequent estimate of loss cone filling index indicates that the loss cone can be substantially filled, due to dayside chorus driven pitch angle scattering, at a rate of ≥0.8 for electrons from ~500 eV to 50 keV that exactly covers the precipitating electrons for the excitation of green-line diffuse aurora. Estimate of electron precipitation flux at different energy levels, based on loss cone filling index profile and typical dayside electron distribution observed by THEMIS spacecraft under similar conditions, gives a total precipitation electron energy flux of the order of 0.1 erg cm−2 s−1 with ~1 keV characteristic energy (especially when using T01s, which can be very likely to cause intense green-line diffuse aurora activity on the

  17. Chemical profile and antimicrobial activity of Boldo (Peumus boldus Molina extracts obtained by compressed carbon dioxide extraction

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    M. Mazutti

    2008-06-01

    Full Text Available This work reports the effects of temperature (20 to 50ºC and pressure (100 to 250 bar on the extraction yield, chemical characteristics and antimicrobial activity of extracts of Peumus boldus Molina obtained by compressed carbon dioxide extraction. Results showed that the extraction variables affect the extraction yield and the chemical distribution of the major compounds present in the extracts. The extracts were chemically analyzed with regard to 1,8-cineole, trans-sabinene, pinocarveol, pinocarvone, 4-terpineol, ascaridole, piperitone oxide, limonene dioxide and n-eicosane in a GC/MSD. Antimicrobial tests demonstrated that the high-pressure CO2 extracts had activity against 13 bacteria and that better action was verified with extracts obtained at a lower CO2 extraction density and a higher temperature.

  18. Rapid increase in relativistic electron flux controlled by nonlinear phase trapping of whistler chorus elements

    Science.gov (United States)

    Saito, Shinji; Miyoshi, Yoshizumi; Seki, Kanako

    2016-07-01

    Wave-particle interactions with whistler chorus waves are believed to provide a primary acceleration for electrons in the outer radiation belt. Previous models for flux enhancement of the radiation belt have assumed the stochastic process as a diffusion manner of successive random-phase interactions, but physical mechanisms for the acceleration are not fully incorporated in these models because of the lack of a nonlinear scattering process. Here we report rapid increase in relativistic electron flux by using an innovative computer simulation model that incorporates not only diffusive process but also nonlinear scattering processes. The simulations show that three types of scattering simultaneously occur, which are diffusive, phase trapping, and phase bunching. It is found that the phase trapping is the most efficient mechanism to produce the MeV electrons rapidly in the scattering processes. The electrons are accelerated from 400 keV to over 1 MeV in time scale less than 60 s. On the other hand, as the phase trapping is suppressed by the breaking of relative phase angle between waves and gyrating electrons during the interaction, the increase of electron flux at MeV energy is clearly reduced. Our simulations conclude that the phase-trapping process causes a significant effect for the increase in relativistic electron flux and suggest that a quasi-linear diffusion model is not always valid to fully describe the relativistic electron acceleration.

  19. Factors influencing survival and mark retention in postmetamorphic boreal chorus frogs

    Science.gov (United States)

    Swanson, Jennifer E; Bailey, Larissa L.; Muths, Erin L.; Funk, W. Chris

    2013-01-01

    The ability to track individual animals is crucial in many field studies and often requires applying marks to captured individuals. Toe clipping has historically been a standard marking method for wild amphibian populations, but more recent marking methods include visual implant elastomer and photo identification. Unfortunately, few studies have investigated the influence and effectiveness of marking methods for recently metamorphosed individuals and as a result little is known about this life-history phase for most amphibians. Our focus was to explore survival probabilities, mark retention, and mark migration in postmetamorphic Boreal Chorus Frogs (Psuedacris maculata) in a laboratory setting. One hundred forty-seven individuals were assigned randomly to two treatment groups or a control group. Frogs in the first treatment group were marked with visual implant elastomer, while frogs in the second treatment group were toe clipped. Growth and mortality were recorded for one year and resulting data were analyzed using known-fate models in Program MARK. Model selection results suggested that survival probabilities of frogs varied with time and showed some variation among marking treatments. We found that frogs with multiple toes clipped on the same foot had lower survival probabilities than individuals in other treatments, but individuals can be marked by clipping a single toe on two different feet without any mark loss or negative survival effects. Individuals treated with visual implant elastomer had a mark migration rate of 4% and mark loss rate of 6%, and also showed very little negative survival impacts relative to control individuals.

  20. Avaliação da qualidade de folhas de boldo-do-chile (Peumus boldus Molina comercializadas em Curitiba, PR

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    M.C.S. Barbosa

    2001-01-01

    Full Text Available Foi realizada a avaliação da qualidade de amostras de boldo-do-chile (Peumus boldus Molina comercializadas na Região Metropolitana de Curitiba. Os resultados mostraram que todas as amostras são autênticas, mas os resultados das análises físico-químicas mostraram-se discrepantes em relação aos parametros da Farmacopéia Brasileira e outras bibliografias de referência.Samples of boldo-do-chile (Peumus boldus Molina commercialized at the metropolitan area of Curitiba/PR were evaluated to establish their quality control patterns. The results showed that all samples are authentic but the data obtained for the physico-chemical parameters differ from those related at the Brazilian Pharmacopoeia IV ed.

  1. Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae Propiedades Insecticidas del Polvo de Peumus boldus Molina Solo y en Mezcla con Cal contra Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae

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    Gabriel Bustos-Figueroa

    2009-09-01

    Full Text Available The insecticidal properties of boldus (Peumus boldus Molina powder used alone and mixed with lime against adults of maize weevil (Sitophilus zeamais Motschulsky were evaluated under laboratory conditions. Additionally, aeration effects (presence or absence and temperature (room temperature vs. 3 ºC on insecticidal properties were studied over time. A mortality rate of 100% was observed at 20 g kg-1 (w/w of P. boldus powder when used alone and mixed with lime in proportions of 50:50, 60:40, and 80:20. The 50% lethal concentration (LC50 for all treatments was Se evaluaron las propiedades insecticidas del polvo de boldo (Peumus boldus Molina, solo y en mezcla con cal, bajo condiciones de laboratorio. Adicionalmente, se evaluó el efecto de la aeración (presencia vs. ausencia y de la temperatura (temperatura ambiente vs. 3 ºC sobre la mortalidad y emergencia de adultos de la F1. La concentración de 20 g kg-1 (p/p del polvo de boldo ya sea solo o en combinación con cal en las proporciones de 50:50, 60:40 y 80:20 mostraron 100% de mortalidad. La concentración letal 50% (CL50, en todos los tratamientos fue menor a 5 g kg-1 (p/p mientras que la CL90 no superó 11 g kg-1 (p/p. La mezcla del polvo con los granos de maíz tanto solo como en mezcla con cal no afectó la germinación. La temperatura y la aeración no afectaron la mortalidad de los adultos parentales ni la emergencia de adultos de la F1. Cuando se mezcló el maíz con el polvo de boldo molido 24 h antes de la infestación con adultos, la mortalidad de los adultos parentales y la emergencia de adultos de la F1 fue de 100 y de 0%, respectivamente. Los resultados no fueron satisfactorios cuando el polvo de boldo almacenado durante 30, 60 y 90 d fue mezclado con el maíz infestado. La toxicidad del follaje de boldo es alta 24 h después de pulverizarse; si el tiempo es mayor, la toxicidad declina significativamente.

  2. 谈合唱的均衡与谐和训练%On the Balance and Coordination Training of Chorus

    Institute of Scientific and Technical Information of China (English)

    石蕾

    2016-01-01

    合唱的均衡与谐和训练涉及很多专业性问题,它包括发声技术、气息控制、音色、音量、音程与和弦、真假声转换、声部的进出等。文章围绕合唱中声部人员及音量比例、力度控制、音色统一、和声连接等方面的问题对合唱声部的均衡与谐和训练进行了梳理与讨论,并提出了个人的见解与应对策略。%The balance and coordination training of chorus involves many professional issues, including sound technology, breath control, timbre, volume, intervals and chords, conversion between falsetto and true voice, voice access. This paper focuses on the voice and volume ratio, strength, tone unity, harmony connection, and analyzes and discusses the balance and coordination training of chorus parts and puts forward some strategies.

  3. Simulation of Resonant Interaction between Energetic Electrons and Whistler-Mode Chorus in the Outer Radiation Belt

    Institute of Scientific and Technical Information of China (English)

    SU Zhen-Peng; ZHENG Hui-Nan

    2008-01-01

    @@ We construct a realistic model to evaluate the chorus wave--particle interaction in the outer radiation belt L = 4.5.This model incorporates a plasmatrough number density model, a field-aligned density model and a realistic wave power and frequency model.We solve the 2D bounce-averaged momentum-pitch-angle Fokker-Planck equation and show that the Whistler-mode chorus can be effective in the acceleration of electrons, and enhance the phase space density for energies of ~1 Me V by a factor from 10 to 103 in about two days, consistent with the observation.We also demonstrate that ignorance of the electron number density variation along field line and magnetic local time in the previous work yields an overestimate of energetic electron phase space density by a factor 5~10 at large pitch-angle after two days, suggesting that a realistic plasma density model is very important to evaluate the evolution of energetic electrons in the outer radiation belt.

  4. Method for direct detection of pitch angle scattering of energetic electrons caused by whistler mode chorus emissions

    Science.gov (United States)

    Kitahara, M.; Katoh, Y.

    2016-06-01

    The Wave-Particle Interaction Analyzer (WPIA), a new instrument proposed by Fukuhara et al. (2009), measures the relative phase angle between the wave magnetic field vector and the velocity vector of each particle and calculates the energy exchange from waves to particles. In this study, we expand its applicability by proposing a method of using the WPIA to directly detect pitch angle scattering of resonant particles by plasma waves by calculating the g values. The g value is defined as the accumulation value of the Lorentz force acting on each particle and indicates the lost momentum of waves. We apply the proposed method to the results of a one-dimensional electron hybrid simulation reproducing the generation of whistler mode chorus emissions around the magnetic equator. Using the wave and particle data obtained at fixed observation points assumed in the simulation system, we conduct a pseudo-observation of the simulation result using the WPIA and analyze the g values. Our analysis yielded significant values indicating the strong pitch angle scattering for electrons in the kinetic energy and pitch angle ranges satisfying the cyclotron resonance condition with the reproduced chorus emissions. The results of this study demonstrate that the proposed method enables us to directly and quantitatively identify the location at which pitch angle scattering occurs in the simulation system and that the method can be applied to the results of space-based observations by the forthcoming Exploration of energization and Radiation in Geospace (ERG) satellite.

  5. Isolation and Characterization of Phenolic Compounds and Anthocyanins from Murta (Ugni molinae Turcz. Fruits. Assessment of Antioxidant and Antibacterial Activity

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    Maria Paula Junqueira-Gonçalves

    2015-03-01

    Full Text Available Berry fruit consumption has become important in the promotion of human health, mainly due to their phenolic compounds, which have been associated with protection against different pathologies, as well as antimicrobial and other biological activities. Consequently, there has been a growing interest in identifying natural antioxidants and antimicrobials from these plants. This study aimed to characterize the phenolic chemical composition and anthocyanin profile of murta (Ugni molinae Turcz. fruit, and to evaluate the antioxidant and antimicrobial activity of its extracts (ethanolic and methanolic. LC/MS of the ethanolic extracts showed the presence of three major compounds: caffeic acid 3-glu, quercetin-3-glu and quercetin, while in the methanolic acid extract they were cyanidin-3-glucoside, pelargonidin-3-arabinose and delphinidin-3-glucoside. The antioxidant activity of ethanolic extracts (DPPH· and ORAC assays was higher than that of methanol acid extracts or purified anthocynins. Furthermore, the methanol acid extract showed an inhibitory activity against the bacteria E. coli and S. typhi similar to that of standard antibiotics. The results suggest that the antioxidant activity of the ethanolic extract is regulated by the high content of phenolic compounds and the fruit’s characteristic color is due to the content of pelargonidin-3-arabinose and delphinidin-3-glucoside. The obtained results demonstrated the appreciable antioxidant and antibacterial activities, providing opportunities to explore murta extracts as biopreservatives.

  6. Antioxidant activity and sensory analysis of murtilla (Ugni molinae Turcz. fruit extracts in an oil model system

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    T. R. Augusto-Obara

    2017-03-01

    Full Text Available An oil model system was used to analyze the antioxidant activity of Chilean fruit extracts and to determine their odor sensory effect. Hydroalcoholic extracts from wild and 14-4 genotype murtilla (Ugni molinae Turcz. fruit were assessed by the Response Surface Methodology. The optimal conditions for producing high total phenolic-content extracts were 49.5% (v/v ethanol at 30 ºC, which yielded 18.39 and 26.14 mg GAE·g-1 dry matter, respectively. The optimized extracts were added to a lipid model system and evaluated via the Schaal Oven Test. After 96 hours, 150 and 200 mg·kg-1 oil of the wild and 14-4 genotype extracts, respectively, showed an antioxidant capacity similar to TBHQ (200 mg·kg-1 oil in terms of peroxide values and odor. Thus, murtilla fruit extracts are a natural source of antioxidants for protecting lipidic foods, such as soybean oil.

  7. Institución Educativa Técnico Industrial Pedro Antonio Molina: eje de desarrollo y bienestar para la comunidad

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    DANIEL ALBERTO ÁLVAREZ WATSON

    2012-01-01

    Full Text Available El caso analiza la situación particular de la Institución educativa Técnico Industrial Pedro Antonio Molina, el liderazgo del rector y el apoyo del sector privado en los procesos de gestión de la calidad. Esto motiva a los integrantes de la institución a trabajar en equipo para lograr la certificación de calidad, mejorando sus resultados académicos año tras año, destacándose a nivel regional y nacional, y generando cambios sociales en su entorno. Metodológicamente, se identificó una institución líder en la ciudad de Cali (Colombia, luego fuentes de información en el contexto local, regional y mundial, consolidándose un caso que muestra las mejores prácticas que una institución educativa realiza para lograr un modelo administrativo susceptible de ser replicado en otras instituciones.

  8. El camino de la biotecnología en la Universidad Nacional Agraria La Molina, Perú

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    Marcel Gutiérrez-Correa

    2013-06-01

    Full Text Available Se realiza un relato histórico sobre los cincuenta años que tiene la carrera de biología en la Universidad Na-cional Agraria La Molina y la gestación, inicio, desarrollo y maduración de la biotecnología en esta universidad. Se describen algunos pormenores de las tres grandes estructuraciones curriculares que finalmente derivan al establecimiento del área de biotecnología en el pregrado y en el doctorado así como a los logros alcanzados. El desarrollo de la biotecnología en la UNALM ha influenciado el desarrollo de esta área en el Perú no solo en las adaptaciones curriculares que se han producido en varias universidades del país sino también en las investigaciones biotecnológicas que se llevan a cabo en universidades e institutos de investigación en las diferentes regiones del país. En este devenir histórico se concluye que el balance es muy positivo y que la mejor corriente epistemológica es la que nos lleva mediante la investigación a encontrar verdades usables en la solución de los problemas del país y, también por qué no, del planeta.

  9. El abate Juan Ignacio Molina: una vida dedicada a la historia natural y civil del reino de Chile

    Directory of Open Access Journals (Sweden)

    Reynaldo Charrier

    2011-09-01

    Full Text Available Juan Ignacio Molina (1740-1829 naci cerca de Talca, Chile, y falleci en Bolonia, Italia. Es el primer cientfico chileno. Desde pequeo se interes por la naturaleza. Se educ con la Compaa de Jess en diversos lugares de Chile central, lo que le permiti conocer su geografa, fauna, flora y poblacin. Con 15 aos ingres a la Compaa. En 1767, abandon el pas al ser expulsada esta orden de espaa y sus dominios. Se radic en los Estados Pontificios, donde se orden de sacerdote y permaneci hasta su muerte. All ense ciencias naturales y produjo su obra cientfica: Compendio de la historia geogrfica, natural y civil del reino de Chile de 1776, una versin aumentada, Ensayo sobre la historia natural de Chile de 1782 y una segunda en 1810. En ellas, abord aspectos climticos, botnicos, geolgicos, zoolgicos, mineralgicos y geogrficos del territorio. Describi el terremoto de Concepcin, las erupciones del Villarrica y Peteroa, e hizo referencia a recursos minerales. Diferenci cuatro unidades litoestratigrficas para Chile central. Clasific plantas y animales siguiendo los criterios de Linneo. En una de sus 14 memorias, Analogas menos observadas de los tres reinos de la Naturaleza, sin podrselo calificar de evolucionista, se destaca su intento de integracin entre los "seres" de los tres reinos, y en Sobre la propagacin del gnero humano en las diversas partes de la tierra, propuso tres vas diferentes para el poblamiento de Amrica. En 1802, ingres a la Academia de Ciencias de Bolonia.

  10. Identification of Fungus Flora Associated with Lagenaria Siceraria (Molina Standl in Côte d’Ivoire

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    Koffi Ahébé Marie-Hélène

    2013-10-01

    Full Text Available Lagenaria siceraria (Molina Standl is a cucurbit which seeds are consumed by people in rural and urban Africa. This plant is subjected to a strong parasitic and diseases pressure that reduces seeds production. Efficient fight against plant parasite, particularly fungus is a prerequisite for an improved productivity. This study was undertaken in five localities (Alepe, Bondoukou, Bongouanou, Divo and Korhogo belonging to three agroecological areas of Côte d’Ivoire. The aim was to identify fungal genera infecting L. siceraria in order to design an efficient control measure. Leaf samples with necrosis and discoloration symptoms were collected throughout the localities and subsequently, fungus were isolated and identified in laboratory. From a total of 750 samples collected, 7 types of symptoms were distinguished. Fungal genera found in all of the localities were Aspergillus, Botryosphaeria, Cochliobolus, Colletotrichum, Fusarium, Lasiodiplodia and Phoma. Only Pestalotiopsis was specific to the locality of Divo. An ANOVA test performed on the data showed a significant difference between fungal genera in terms of isolation frequency. Principal components analysis revealed that fungus distribution in each locality was correlated with climatic factors.

  11. Diversification of Chilean aquaculture: the case of the giant barnacle Austromegabalanus psittacus (Molina, 1782 Diversificación de la acuicultura chilena: el caso del cirripedio gigante Austromegabalanus psittacus (Molina, 1782

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    Daniel A López

    2012-09-01

    Full Text Available Evidence is presented supporting the technical and economic possibilities of giant barnacle Austromegabalanuspsittacus (Molina, 1782 culture, one of the main alternatives for diversifying aquaculture in Chile. Spat collection from the wild varied between different sites in the north and south of the country and according to type of artificial collector. Growth also varied between sites (greater in the north, technological systems (greater in tubular systems and depths (greater at 4 m. Average commercial size in the national market was reached over a period between 18 and 24 months. A long-line can produce between 7 to 10 gross ton during this period, therefore average annual fisheries production can be reached with only 10 to 30 long-lines, in an area of 1 to 3 ha. There is demand for this resource in the external market, particularly in the Japanese market, either as product similar to "fujit subo" (Balanus rostratus, or as a new resource; the relationship between production costs and price determines that giant barnacle culture has commercial potential. Economic indicators for cultured giant barnacle were as follows: net present value (NPV: US$ 490,000; internal rate of return (IRR: 32%; discounted payback period (DPBP: 4 years. Results obtained suggest the natural bank repopulation option, and the development of mass cultures. Giant barnacle culture is based on biological characteristics that differentiate it from other crustaceans species, as well as simple and economic production technologies and favourable economic projections on external markets.Se presentan evidencias de las posibilidades técnicas y económicas del cultivo del cirripedio gigante o "picoroco", Austromegabalanus psittacus (Molina, 1782. Esta especie es una de las principales alternativas para la diversificación de la acuicultura en Chile. La captación de semilla desde el ambiente varió entre distintos sitios del norte y sur del país y según el tipo de colector

  12. What will it take to close the racial and ethnic health disparities gap? A conversation with Michael E. Bird, Reed Tuckson, and Marilyn Aguirre-Molina.

    Science.gov (United States)

    Head, Carmen J; Lathan, Monica J

    2006-07-01

    In the United States, the health of a community is often times determined by poverty and race. As the nation becomes more racially and ethnically diverse, new directives and approaches must be taken to improve health outcomes of minority and underserved communities. Three leading experts in racial and ethnic health share their perspectives regarding where we are and where we need to be in addressing health disparities. Michael E. Bird, MSW, MPH, Reed Tuckson, MPH, and Marilyn Aguirre-Molina, EdD, offer transdisciplinary-focused recommendations that encompass disease prevention, health care, and community mobilization.

  13. Crenosoma brasiliense sp. n. (Nematoda: Metastrongyloidea) parasitic in lesser grison, Galictis cuja (Molina, 1782) (Carnivora, Mustelidae) from Brazil, with a key to species of Crenosoma Molin, 1861.

    Science.gov (United States)

    Vieira, Fabiano M; Muniz-Pereira, Luis C; de Souza, Lima Sueli; Neto, Antonio H A Moraes; Gonçalves, Pamela R; Luque, José L

    2012-09-01

    This study describes Crenosoma brasiliense (Nematoda, Metastrongyloidea), a new species parasitic in bronchi and bronchioles of Galictis cuja (Molina) (Carnivora, Mustelidae) from Brazil. This species differs from other 11 species of Crenosoma by having a cuticular projection at the distal end of the spicules, forming a prominent blade at the tip of the spicule, a vulval cuticular appendage with a triangular shape and prominent vulval lips. There are no previous records of species of Metastrongyloidea in G. cuja or species of Crenosoma in South America. Therefore, the new species represents the first host record and first geographical record of species of Crenosoma in South America.

  14. El arte, la mirada y la intimidad en Ventanas de Manhattan, de Antonio Muñoz Molina

    OpenAIRE

    2010-01-01

    Entre los relatos de Antonio Muñoz Molina, quizá sea Ventanas de Manhattan (2004) aquel que explora con mayor intensidad un motivo recurrente en su obra: la observación del entorno y de las huellas del pasado. En este texto híbrido, que participa de la crónica periodística, el libro de viajes, el ensayo y la novela, dividido en secuencias que a veces constituyen verdaderos microrrelatos, Nueva York se presenta como el espacio del anonimato y la indiferencia, donde “estar viendo y no mirar ...

  15. Larvicidal activity of essential oil of Peumus boldus Molina and its ascaridole-enriched fraction against Culex quinquefasciatus.

    Science.gov (United States)

    de Castro, Débora Silva Borges; da Silva, Denise Brentan; Tibúrcio, Jacqueline Domingues; Sobral, Marcos Eduardo Guerra; Ferraz, Vany; Taranto, Alex Gutterres; Serrão, José Eduardo; de Siqueira, João Máximo; Alves, Stênio Nunes

    2016-12-01

    Culex quinquefasciatus (Say, 1823), known as the domestic mosquito, is a common and abundant species throughout the world, and a cosmopolitan species. The adults of this mosquito are important in terms of public and animal health since they display adaptability to different hosts. In humans, they are responsible for the transmission of various diseases. One manner of control of this vector is the use of insecticidal or larvicidal products, which may have the drawback of toxicity to mammals and can be harmful to the environment. The present work evaluated the larvicidal potential of the essential oil (EO) and ascaridole-enriched fraction (EF4-5) obtained from the leaves of Peumus boldus Molina (boldo). The EO, obtained by steam distillation, was analyzed by GC/MS and fractionated on silica gel. EO and EF4-5, containing 31.4% and 89.5% ascaridole, respectively, were evaluated against C. quinquefasciatus at concentrations of 100, 50 and 25 μg/ml on the third and fourth instars. They showed lethal concentrations (LC50) of 82.14 and 41.85 μg/ml, respectively. Larvae treated with the EF4-5 showed morphological changes in the midgut, with cells possessing a cytoplasm that contained small vacuole-like structures, as well as a nucleus with decondensed chromatin and a cell apex with a short brush border. The cells of the fat body showed larger protein granules, which were acidophilic relative to the larvae of the control group. Moreover, the enriched fraction at a dose of 50 μg/ml showed a residual larvicidal effect according to exposure time on C. quinquefasciatus. This residual effect deserves consideration, since a long-term larvicidal product may be a useful tool for vector control.

  16. Identification and Characterization of Microsatellite Loci in Maqui (Aristotelia chilensis [Molina] Stunz) Using Next-Generation Sequencing (NGS)

    Science.gov (United States)

    Bastías, Adriana; Correa, Francisco; Rojas, Pamela; Almada, Rubén; Muñoz, Carlos; Sagredo, Boris

    2016-01-01

    Maqui (Aristotelia chilensis [Molina] Stunz) is a small dioecious tree native to South America with edible fruit characterized by very high antioxidant capacity and anthocyanin content. To preserve maqui as a genetic resource it is essential to study its genetic diversity. However, the complete genome is unknown and only a few gene sequences are available in databases. Simple sequence repeats (SSR) markers, which are neutral, co-dominant, reproducible and highly variable, are desirable to support genetic studies in maqui populations. By means of identification and characterization of microsatellite loci from a maqui genotype, using 454 sequencing technology, we develop a set of SSR for this species. Obtaining a total of 165,043 shotgun genome sequences, with an average read length of 387 bases, we covered 64 Mb of the maqui genome. Reads were assembled into 4,832 contigs, while 98,546 reads remained as singletons, generating a total of 103,378 consensus genomic sequences. A total of 24,494 SSR maqui markers were identified. Of them, 15,950 SSR maqui markers were classified as perfects. The most common SSR motifs were dinucleotide (31%), followed by tetranucleotide (26%) and trinucleotide motifs (24%). The motif AG/CT (28.4%) was the most abundant, while the motif AC (89 bp) was the largest. Eleven polymorphic SSRs were selected and used to analyze a population of 40 maqui genotypes. Polymorphism information content (PIC) ranged from 0.117 to 0.82, with an average of 0.58. Non-significant groups were observed in the maqui population, showing a panmictic genetic structure. In addition, we also predicted 11150 putative genes and 3 microRNAs (miRNAs) in maqui sequences. This results, including partial sequences of genes, some miRNAs and SSR markers from high throughput next generation sequencing (NGS) of maqui genomic DNA, constitute the first platform to undertake genetic and molecular studies of this important species. PMID:27459734

  17. Identification and Characterization of Microsatellite Loci in Maqui (Aristotelia chilensis [Molina] Stunz Using Next-Generation Sequencing (NGS.

    Directory of Open Access Journals (Sweden)

    Adriana Bastías

    Full Text Available Maqui (Aristotelia chilensis [Molina] Stunz is a small dioecious tree native to South America with edible fruit characterized by very high antioxidant capacity and anthocyanin content. To preserve maqui as a genetic resource it is essential to study its genetic diversity. However, the complete genome is unknown and only a few gene sequences are available in databases. Simple sequence repeats (SSR markers, which are neutral, co-dominant, reproducible and highly variable, are desirable to support genetic studies in maqui populations. By means of identification and characterization of microsatellite loci from a maqui genotype, using 454 sequencing technology, we develop a set of SSR for this species. Obtaining a total of 165,043 shotgun genome sequences, with an average read length of 387 bases, we covered 64 Mb of the maqui genome. Reads were assembled into 4,832 contigs, while 98,546 reads remained as singletons, generating a total of 103,378 consensus genomic sequences. A total of 24,494 SSR maqui markers were identified. Of them, 15,950 SSR maqui markers were classified as perfects. The most common SSR motifs were dinucleotide (31%, followed by tetranucleotide (26% and trinucleotide motifs (24%. The motif AG/CT (28.4% was the most abundant, while the motif AC (89 bp was the largest. Eleven polymorphic SSRs were selected and used to analyze a population of 40 maqui genotypes. Polymorphism information content (PIC ranged from 0.117 to 0.82, with an average of 0.58. Non-significant groups were observed in the maqui population, showing a panmictic genetic structure. In addition, we also predicted 11150 putative genes and 3 microRNAs (miRNAs in maqui sequences. This results, including partial sequences of genes, some miRNAs and SSR markers from high throughput next generation sequencing (NGS of maqui genomic DNA, constitute the first platform to undertake genetic and molecular studies of this important species.

  18. Terminología botánica indígena en el vocabulario castellanomexicano (1555 de Fray A. De Molina

    Directory of Open Access Journals (Sweden)

    Manuel Galeote

    2002-01-01

    Full Text Available Las voces indígenas de la flora americana, que fray Alonso de Molina incluye en la sección castellana de su obra: Aqui comiença vn vocabulario en la lengua castellana y mexicana (México, Juan Pablos, 1555 se analizan desde el punto de vista histórico y sociolingüístico. Se trata del primer vocabulario de Molina —el Nebrija de las Indias — y, además, el primer diccionario impreso en México y en América. En las entradas castellanas, los términos indígenas americanos de la flora (plantas y frutas constituyen uno de los campos onomasiológicos más numerosos (maíz, cacao, maguey, chía, ají, etc. De los once términos indígenas hemos contabilizado casi un centenar de ocurrencias. En conclusión, este vocabulario muestra el fondo léxico patrimonial del español y los indoamericanismos que se acomodaron a las estructuras de la lengua castellana.

  19. LA VOZ NARRATIVA COMO COMPROMISO CON LA VERDAD ANÁLISIS DEL NARRADOR EN LA NOVELA LA NOCHE DE LOS TIEMPOS, DE MUÑOZ MOLINA

    Directory of Open Access Journals (Sweden)

    Enrique Arroyas

    2012-07-01

    Full Text Available Resumen: Este artículo consiste en un análisis de la voz narrativa de la novela La noche de los tiempos, según un modelo comunicativo que abarca tanto aspectos sintácticos y semánticos como pragmáticos que permitan arrojar luz sobre el sentido del texto. Desde un enfoque pragmático se analiza la finalidad de la narración como acto comunicativo en la que se plantea la relación del discurso con su contexto y del enunciador con el enunciatario. La elección de la voz narrativa y su focalización es uno de los grandes aciertos de esta novela de Muñoz Molina, puesto que en ella reside su verosimilitud y su carácter ético. Abstract: This article examines the narrative voice of La noche de los tiempos, a novel by Antonio Muñoz Molina, according to a communicative model that treats syntactic, semantic, and pragmatics aspects that shed light on the meaning of the text.From a pragmatic perspective I analyze the purpose of the narrative as a communicative act which establishes a relationship of the discourse to its context and of the narrator to the narratee. The choice of narrative voice and its focalization is one of the great achievements of this novel, since it is the source of the work’s verisimilitude and ethical character.

  20. Terminología botánica indígena en el vocabulario castellano-mexicano (1555 de Fray A. de Molina

    Directory of Open Access Journals (Sweden)

    Galeote Manuel

    2002-06-01

    Full Text Available

    Las voces indígenas de la flora americana, que fray Alonso de Molina incluye en la sección castellana de su obra: Aquí comience un vocabulario en la lengua castellana y mexicana (México, Juan Pablos, 1555 se analizan desde el punto de vista histórico y sociolingüístico. Se trata del primer vocabulario de Molina el Nebrija de las Indias y, además, el primer diccionario impreso en México y en América. En las entradas castellanas, los términos indígenas americanos de la flora (plantas y frutas constituyen uno de los campos onomasiológicos más numerosos (maíz, cacao, maguey, chía, ají, etc. De los once términos indígenas hemos contabilizado casi un centenar de ocurrencias. En conclusión, este vocabulario muestra el fondo léxico patrimonial del español y los indoamericanismos que se acomodaron a las estructuras de la lengua castellana.

  1. Słowa, wspomnienia i opowieści: poszukiwanie japońskiej tożsamości w Chorus of Mushrooms Hiromi Goto

    OpenAIRE

    2014-01-01

    The novel Chorus of Mushrooms, written by Hiromi Goto, a Japanese-Canadian author, is a peculiar search for identity and the language necessary for expressing that identity. From experiments with words, memories, and stories with which the protagonist attempts to construct her own self, emerges the concept of the scattered, relative Japanese-Canadian identity. The text emphasizes the problem of the dissonance between the ability to speak and the ability to express oneself, and reveals the com...

  2. Instability of whistler mode chorus in space plasma%空间等离子体中哨声波合声模非稳定性

    Institute of Scientific and Technical Information of China (English)

    周庆华; 肖伏良; 唐立军

    2011-01-01

    A systematic study on the instability of whistler mode chorus in space plasma by a Kappa distribution was presented. When the anisotropy or the number density of energetic electrons increases, the wave growth rate increases and the frequency range of positive growth rate is broader. If the temperature of energetic electrons is very low or very high, the interaction between the particles and wave are relatively weak and the growth rate is relatively low. The path-integrated gain of whistler-mode chorus was calculated based on ray trace results and it is found that the lower band chorus has a much higher path-integrated gain than an upper band chorus under the same conditions.%系统分析了Kappa空间等离子体中哨声波合声模的非稳定性.研究发现,高能电子的数密度和温度各向异性越高,哨声波的增长率以及正增长率所对应的频率范围也越大;当电子温度过低或过高时,高能电子与哨声波的相互作用较弱,导致增长率较低;磁纬度越高,传播角越大,增长率越小.利用射线追踪的结果分析了哨声波合声模在传播过程中的增益和衰减过程,计算结果表明,在同等条件下,低频段哨声波合声模的增益远大于高频段哨声波合声模的增益.

  3. [Biostratigraphy and paleoecology of the Neogene micromammalian faunas from the Calatayud-Teruel Basin (Spain) / Freudenthal, M. (editor)]: Rodents and lagomorphs from a lower Vallesian fissure filling near Molina de Aragon (Prov. Guadalajara, Spain)

    NARCIS (Netherlands)

    Anduenza, J.I.L.

    1988-01-01

    A new lower Vallesian micromammalian fauna from a locality near Molina de Aragon is described. Five species of Cricetidae, three species of Sciuridae - including a new one (Heteroxerus molinensis) -, two species of Gliridae, and one lagomorph species are described. Also, the paleoecological implicat

  4. AGRO-BOTANICAL CHARACTERISTICS OF LAGENARIA (Lagenaria siceraria (Molina Standl. IN IMAGES AND SYMBOLS Агро-ботанические характеристики лагенарии (Lagenaria siceraria (Molina Standl. в образах и символах

    Directory of Open Access Journals (Sweden)

    Tsatsenko L. V.

    2013-09-01

    Full Text Available The article considers the agro-botanical characteristics of pumpkin annual plants – lagenaria ( Lagenaria siceraria (Molina Standl. have been consider in article. The task of the analytical study went in search of communication between anatomic-morphological characteristics of plant and use this in the images, the iconography of the cultural traditions of different nation

  5. AGRO-BOTANICAL CHARACTERISTICS OF LAGENARIA (Lagenaria siceraria (Molina) Standl.) IN IMAGES AND SYMBOLS Агро-ботанические характеристики лагенарии (Lagenaria siceraria (Molina) Standl.) в образах и символах

    OpenAIRE

    Tsatsenko L. V.

    2013-01-01

    The article considers the agro-botanical characteristics of pumpkin annual plants – lagenaria ( Lagenaria siceraria (Molina) Standl.) have been consider in article. The task of the analytical study went in search of communication between anatomic-morphological characteristics of plant and use this in the images, the iconography of the cultural traditions of different nation

  6. Análise da contaminação fúngica em amostras de Cassia acutifolia Delile (sene) e Peumus boldus (Molina) Lyons (boldo-do-Chile) comercializadas na cidade de Campinas, Brasil Analysis of the fungal contamination in Cassia acutifolia Delile (sene) and Peumus boldus (Molina) Lyons (boldo-do-Chile) sold in Campinas, Brazil

    OpenAIRE

    Liliana O Rocha; Maria Magali S. R. Soares; Cristiana Leslie Corrêa

    2004-01-01

    A sociedade atual tem buscado a fitoterapia como um importante recurso terapêutico, sendo a avaliação da qualidade microbiológica destes produtos um requisito essencial, considerando a sua origem. Deste modo, o objetivo da pesquisa foi realizar a contagem e a identificação de fungos filamentosos em 20 amostras de folhas de Cassia acutifolia Delile (sene) e de Peumus boldus (Molina) Lyons (boldo-do-Chile) comercializadas em farmácias de manipulação e mercados da cidade de Campinas, Brasil, usa...

  7. Control of the biological process through continuous measurement of the sludge age. Experiences in the WWTP Molina de Segura (Murcia, Spain); Control del proceso biologico mediante la medida en continuo de la edad del fango. Experiencias en la EDAr Molina de Segura (Murcia)

    Energy Technology Data Exchange (ETDEWEB)

    Marques, F.; Pradas, P.; Lardin, C.; Simon, P.

    2010-07-01

    This paper reports the results obtained when a sludge age based control is incorporated in the biological process of a wastewater treatment plant (WWTP). Greater stability of the biological process is achieved when this control is implemented in WWTP of Molina de Segura. In particular biodiversity has increased and it has been possible to reduce and stabilize the secondary sludge production. An improvement of the sludge decantation and a reduction of the specific volumetric load of secondary clarifiers have also been observed. finally, costs have been reduced dur to the decrease of cationic polyelectrolyte consumption. (Author) 16 refs.

  8. Un Andalou au Pays basque. Ardor guerrero de Muñoz Molina (1995) : problèmes identitaires pendant la Transition espagnole (1975-1982)

    OpenAIRE

    Elvire Diaz

    2007-01-01

    L’écrivain, journaliste et académicien, Antonio Muñoz Molina (Jaén, 1956) retrace dans Ardor guerrero, roman à caractère autobiographique, son expérience militaire en tant qu’appelé, affecté au Pays Basque, entre octobre 1979 et décembre 1980. Dans un contexte de transition politique et idéologique, qui définit les Statuts d’autonomie des anciennes régions « historiques», le narrateur-personnage d’Ardor guerrero décrit et analyse non seulement la rudesse de la vie militaire dans la caserne de...

  9. Un Andalou au Pays basque. Ardor guerrero de Muñoz Molina (1995 : problèmes identitaires pendant la Transition espagnole (1975-1982

    Directory of Open Access Journals (Sweden)

    Elvire Diaz

    2007-07-01

    Full Text Available L’écrivain, journaliste et académicien, Antonio Muñoz Molina (Jaén, 1956 retrace dans Ardor guerrero, roman à caractère autobiographique, son expérience militaire en tant qu’appelé, affecté au Pays Basque, entre octobre 1979 et décembre 1980. Dans un contexte de transition politique et idéologique, qui définit les Statuts d’autonomie des anciennes régions « historiques», le narrateur-personnage d’Ardor guerrero décrit et analyse non seulement la rudesse de la vie militaire dans la caserne de...

  10. Effect of methanolic extract of Lagenaria siceraria (Molina Standley fruits on marble-burying behavior in mice: Implications for obsessive-compulsive disorder

    Directory of Open Access Journals (Sweden)

    R P Prajapati

    2011-01-01

    Full Text Available Context: Obsessive-compulsive disorder (OCD is the fourth most common mental disorder and is diagnosed nearly as often as asthma and diabetes mellitus. Over the last decade, the inhibition of burying of glass marbles by mice has been used as an index of anti-OCD drug action in the so-called marble-burying test. Lagenaria siceraria (Molina Standley (LS, commonly known as "bottle gourd" (English, possesses several medicinal properties; little is known about its action as a nerve tonic. Objective: The purpose of this study was to characterize the anti-OCD (anti-compulsive activity of the methanolic extract of the fruits of L. siceraria (Molina Standley (LS using the marble-burying behavior in mice. Materials and Methods: The experiment was conducted in specific animal models of Swiss albino mice to evaluate marble-burying behavior. Results and Conclusions: Intraperitonial administration of 25 and 50 mg/kg of LS extract significantly (P < 0.001 decreased the total number of buried marbles. The effect was comparable to that of the fluoxetine (10 mg/kg, i.p.. Fluoxetine and LS fruit extract do not produce any overt motor dysfunction. Preliminary phytochemical screening of the methanolic extract of LS showed the presence of flavonoids, saponins, sterols, proteins, tannins and carbohydrates. The results of the study for the first time show that the plant possesses anti-compulsive (anti-OCD activity, confirming the traditional claims. Future research should focus on the identification and the mechanism of action of the constituents from this plant.

  11. TENSIONES ENTRE LITERATURA, CIENCIA, EXPERIENCIA E HISTORIA EN UN INTELECTUAL DE LA SATTELZEIT HISPANOAMERICANA: LOS PREFACIOS EN LA PROSA CIENTÍFICA DE JUAN IGNACIO MOLINA Tensions between literature, science, experience and history in an intellectual of the Sattelzeit in Spanish America: the prefaces in the scientific prose of Juan Ignacio Molina

    Directory of Open Access Journals (Sweden)

    Adolfo de Nordenflycht B

    2009-12-01

    Full Text Available Este estudio se propone una revisión de los prefacios de las principales obras de Juan Ignacio Molina (el Compendio anónimo de 1776, el Saggio de 1782 traducido al español como Compendio en 1788 y el Saggio de 1810 a fin de evidenciar cómo ciertos aspectos literarios de su prosa científica -en particular, los problemas del género (ensayo, compendio la escritura de "historias naturales", el significado del narrar y el sentido de la experiencia del sujeto- ilustran las tensiones inherentes durante el proceso del cambio semántico del concepto de "ciencia" en el marco de la Sattelzeit hispanoamericana.A study which propounds a review of the prefaces of Juan Ignacio Molina's principal works (the anonymous Compendio 1116, the Saggio 1782, translated into Spanish like Compendio in 1788 and the Saggio 1810 in order to demonstrate how certain literary aspects of his scientific prose -in particular, gender issues (essay, compendium, the writing of "Natural History", the meaning of the narrative and the sense of the subject's experience- ¡Ilustrate the tensions inherent in the process of semantic change of the concept of "science" in the frame of the Sattelzeit in Spanish América.

  12. 论合唱教育中的情商体现与培养%Chorus education and training reflect EQ

    Institute of Scientific and Technical Information of China (English)

    华夏

    2015-01-01

    合唱艺术自西方传入中国虽然只有一百多年的历史,但合唱教育发展至今已成为中国音乐教育中的一项重要内容,合唱课程的设置、合唱团体的培养促进了合唱艺术的发展。合唱教育除了提高学生的音乐素养还具有很强的教化作用,在此,笔者认为合唱教育不仅能培养人的团队精神及合作意识,还能有效提高人的情商。文章着重于合唱中的情商体现与培养,并论述情商培养的社会意义。%Chorus from the west into China, although only a hundred years of history, but the development of education has become a chorus of music education in China is an important element, setting, training courses choir choral groups promoted the development of choral art. Choral music education in addition to improving students' literacy also has a strong role of education in this, I believe that not only choral education awareness teamwork and cooperation of people, but also effectively improve people's emotional intelligence. The article focuses on the chorus and EQ reflects culture, and discusses the social significance of EQ training.

  13. How to Let the Chorus Teaching Integrate into the Course of Music Appreciation%如何将合唱教学融入音乐欣赏课

    Institute of Scientific and Technical Information of China (English)

    谢敏

    2014-01-01

    对于青少年来说,音乐教育是不可缺少的一门课程,而合唱是音乐教育中的培养学生感性认识的重要课程,并提高学生的文化素质。合唱是一种团体行为,在演唱过程中,不仅能通过音乐抒发情感,凝聚情感,还能使学生互相接触、学习、合作等。合唱教学被一些音乐教师当成是一种难以掌握的教学环节。除了环境、师生等客观因素外,科学的教学方法也是帮助突破课堂上许多瓶颈的重要一环。%For teenagers,music education is an indispensable course,while the chorus is an important course for students perceptual knowledge training in music education,and improve the students’ cultural quality. The chorus is a kind of group behavior,during the song,not only through the music to express of emotion,emotional cohesion,but also can enable students to contact each other,learning,cooperation etc. Chorus teaching by some music teachers as a difficult teaching. In addition to the environment,the teachers and students and other objective factors,scientific teaching method is to help break through the classroom many bottleneck is important one annulus.

  14. Effects of hydroperiod duration on survival, developmental rate, and size at metamorphosis in boreal chorus frog tadpoles (Pseudacris maculata)

    Science.gov (United States)

    Amburgey, Staci; Funk, W. Chris; Murphy, Melanie; Muths, Erin

    2012-01-01

    Understanding the relationship between climate-driven habitat conditions and survival is key to preserving biodiversity in the face of rapid climate change. Hydroperiod—the length of time water is in a wetland—is a critical limiting habitat variable for amphibians as larvae must metamorphose before ponds dry. Changes in precipitation and temperature patterns are affecting hydroperiod globally, but the impact of these changes on amphibian persistence is poorly understood. We studied the responses of Boreal Chorus Frog (Pseudacris maculata) tadpoles to simulated hydroperiods (i.e., water level reductions) in the laboratory using individuals collected from ponds spanning a range of natural hydroperiods (Colorado Front Range, USA). To assess the effects of experimental hydroperiod reduction, we measured mortality, time to metamorphosis, and size at metamorphosis. We found that tadpoles grew at rates reflecting the hydroperiods of their native ponds, regardless of experimental treatment. Tadpoles from permanent ponds metamorphosed faster than those from ephemeral ponds across all experimental treatments, a pattern which may represent a predation selection gradient or countergradient variation in developmental rates. Size at metamorphosis did not vary across experimental treatments. Mortality was low overall but varied with pond of origin. Our results suggest that adaptation to local hydroperiod and/or predation and temperature conditions is important in P. maculata. Moreover, the lack of a plastic response to reduced hydroperiods suggests that P. maculata may not be able to metamorphose quickly enough to escape drying ponds. These results have important implications for amphibian persistence in ponds predicted to dry more quickly due to rapid climate change.

  15. Some Thinkings on the Development of China's Chorus%对我国合唱事业发展问题的若干思考

    Institute of Scientific and Technical Information of China (English)

    王丽莎

    2011-01-01

    suggsetions on the development of Chinese chorus are offered in this paper,which are: vocal coaches should be ambitious and responsible persons with a sense of mission,exploring and innovative spirits;The development of China's chorus should begin with the children.Emphases should be laid on the music instruction in preschools,primary and high schools;The system of choral education with Chinese characteristics should be established;vocal coaches should keep up with the trend of the most advanced choral education in the world.%对我国合唱事业的发展问题进行了如下思考:其一,要做有思想、有抱负、有使命感、勇探索、能创新的合唱事业的工作者;其二,中国合唱事业的发展要从娃娃抓起,注重中、小、幼学校的基础音乐教育;第三,构建有中国特色的合唱教育体系;第四,中小学音乐教育应适应当代世界音乐教育发展的历史潮流;第五,要学习借鉴世界先进的合唱艺术教育的理念与优秀成果。

  16. Sperm competition and the evolution of precopulatory weapons: Testis size and amplexus position, but not arm strength, affect fertilization success in a chorusing frog.

    Science.gov (United States)

    Buzatto, Bruno A; Thyer, Evan M; Roberts, J Dale; Simmons, Leigh W

    2017-02-01

    Trade-offs between pre- and postcopulatory traits influence their evolution, and male expenditure on such traits is predicted to depend on the number of competitors, the benefits from investing in weapons, and the risk and intensity of sperm competition. Males of the chorusing frog Crinia georgiana use their arms as weapons in contest competition. Previously, we showed that increased numbers of rivals elevated the risk and intensity of sperm competition due to multimale amplexus, and caused a reversal in the direction of precopulatory selection on arm girth. Here, we focused on the factors affecting postcopulatory fertilization success during group spawning, using paternity data from natural choruses. Competitive fertilization success depended on the time spent amplexed and amplexus position. Relative testes size but not arm girth, contributed to fertilization success, but the effect of testes size depended on amplexus position. Our findings offer within species empirical support for recent sperm competition models that incorporate precopulatory male-male competition, and show why an understanding of the evolution of animal weapons requires a consideration of both pre- and postcopulatory episodes of sexual selection.

  17. Arquitectura fluvial de las «Areniscas del río Arandilla». Triásico de Molina de Aragón (Guadalajara

    Directory of Open Access Journals (Sweden)

    Sánchez-Moya, Y.

    1989-08-01

    Full Text Available The outstanding outcrops of Upper Buntsandstein sediments (Middle Triassic in Molina de Aragón (Guadalajara area, allow a detailed study of their characteristics and their associations which are described here. The fluvial architecture of the section indicates four main depositional episodes. The two lowest episodes were laid down by a fluvial system characterized by frequent channel shifting, low sinuosity and wide shallow channels. The drainage basin was controlled by highly seasonal discharge. The middle episode evolved into a more distal systems, with smaller higher sinuosity channels and fine overbank deposits. The uppermost episode is related to an increase of slope in the basin. That increase is probably related to tectonic movements recorded in this area. An attempt has been made to correlate the above events to the global sea level fluctuations (Haq et al., 1987. So, the low stage that have been stated occurred during Early Anisian can be tentatively correlated with the uppermost episode in Areniscas del río Arandilla.Los excelentes afloramientos de la parte superior del Buntsandstein (Triásico medio en Molina de Aragón (Guadalajara, han permitido llevar a cabo un análisis sedimentológico detallado de las facies fluviales y de su arquitectura. Se han distinguido doce diferentes facies cuyas características y asociaciones se describen en este trabajo. La evolución fluvial indica la existencia de cuatro episodios deposicionales. Los dos episodios inferiores son característicos de un sistema fluvial con canales de baja sinuosidad, inestables, de gran amplitud y poca profundidad. El drenaje de la cuenca estaba controlado por importantes descargas estacionales. El episodio intermedio es el resultado de la evolución del sistema hacia facies más distales. En esta etapa los canales son de menor tamaño, la sinuosidad es mayor y existe un mayor porcentaje de depósitos de granulometría fina relacionados con la llanura de inundaci

  18. Juan Ignacio Molina y la comprensión de la naturaleza del Finis Terrae. Un acercamiento desde la Historia (cultural de la Ciencia

    Directory of Open Access Journals (Sweden)

    Orrego González, Francisco

    2011-10-01

    Full Text Available The study of the work of the Chilean Jesuit Juan Ignacio Molina (1740-1829, especially since the Chilean historiography, has accused an important criticism myopia about of the naturalist that constantly has been considered, with fairly light weight, as the “first Chilean scientist”. The fundamental importance of exile as a scientific vocation, the European controversies about the New World and the institutional conditions and political mechanisms that allowed the development of scientific knowledge in late eighteenth century are elements that have not been integrated into the analysis of the work of the naturalist Chilean who came to integrate the Bologna Academy of Sciences. Therefore, the proposed historical analysis of this article seeks to break the apologetic historiography in order to present the work and figure of the Chilean Jesuit in a broad historical context, in an attempt to provide alternative answers, shows part of the political and epistemological problems that influenced the development of scientific thought of the Chilean naturalist.El estudio de la obra del jesuita chileno Juan Ignacio Molina (1740-1829, especialmente desde la historiografía chilena, ha acusado una importante miopía crítica respecto del naturalista que constantemente ha sido considerado, con bastante ligereza, como el “primer científico chileno”. La importancia fundamental del exilio como vocación científica, las controversias europeas sobre el Nuevo Mundo y las condiciones institucionales y mecanismos políticos que permitieron el desarrollo del conocimiento científico a fines del siglo XVIII son elementos que no han sido integrados en el análisis de la obra del naturalista chileno quien llegó a integrar la Accademia delle Scienze di Bologna. Por tanto, la propuesta de análisis histórico de este artículo busca romper con la historiografía apologética para presentar la obra y la figura del jesuita chileno en un contexto histórico amplio y

  19. Optimization of the anaerobic digestion through application of ultrasounds in secondary sludge of the wastewater treatment plant of Molina de Segura (Murcia, Spain); Optimizacion de la digestion anaerobia mediante la aplicacion del ultrasonidos en los fangos secundarios de la EDAR Molina de Segura (Murcia)

    Energy Technology Data Exchange (ETDEWEB)

    Simon Andreu, P. J.; Lardin, C.; Andreu, J. a.; Bolinches Sanchez, S.; Garcia, A.; Pinana, L.; Pradas, P.; Gutierrez Garcia, D.

    2007-07-01

    The application of ultrasounds in secondary sludge in the wastewater treatment plant of Molina de Segura produces an instantaneous hydrolysis on the existing cellular walls in secondary sludge, all it in a time of retention of 2 seconds as opposed to the 8 days of minimum time of required retention in any anaerobic digestion. This hydrolysis instantaneously increases the biodegradable matter easily biodegradable accelerating the processes of digestion and allowing to the passage to next the three stages (acidogenesis, acetogenesis and methanogenesis), providing great amount of benefits, as are, an increase of the yield of elimination of volatile material, an increase in the production of biogas and a reduction in the production of dehydrated sludge. (Author)

  20. Presence of a Phytoplasma Associated with Witches’-Broom Disease in Ugni molinae Turcz. and Gaultheria phillyreifolia (Pers. Sleumer Determined by DAPI, PCR, and DNA Sequencing Presencia de un Fitoplasma Asociado a la Enfermedad de "Escoba de Bruja" en Ugni molinae Turcz. y Gaultheria phillyreifolia (Pers. Sleumer Determinado Mediante DAPI, PCR y Secuenciación de ADN

    Directory of Open Access Journals (Sweden)

    Nolberto Arismendi S

    2010-03-01

    Full Text Available Murta (Ugni molinae Turcz. and common chaura (Gaultheria phillyreifolia (Pers. Sleumer are native species of Chile. Plants of both species have shown over-branching like witches' broom. The causal agents of these symptoms in many plants are phytoplasma. To verify the presence of these microorganisms, DAPI (4',6-diamidino-2-phenylindole staining analysis and polymerase chain reaction (PCR were performed in symptomatic and asymptomatic plants. Positive PCR samples were sequenced to identify the pathogens involved. In individuals of both species with witches’ broom symptoms, DAPI staining showed fluorescent bodies in the phloem tissues, but not in asymptomatic plants. Verification by nested-PCR, phytoplasmatic DNA was amplified from diseased murta and chaura, but not in apparently healthy plants. Sequencing of amplified products allowed locating phytoplasma within the ash yellows group (16SrVII and related to Candidatus phytoplasma fraxini. This is the first report of phytoplasma in Chilean native species. Considering the diversity of plant species infected by the ash yellows group suggests that G. phillyreifolia and U. molinae could be a phytoplasma reservoir for other economically important agricultural crops.La murta (Ugni molinae Turcz. y la chaura común (Gaultheria phillyreifolia (Pers. Sleumer son especies nativas de Chile. En plantas de ambas especies se ha observado una sobre-ramificación de tipo "escoba de bruja". En muchas plantas los agentes causales de esta sintomatología son fitoplasmas. Para verificar la presencia de estos microorganismos se analizaron plantas con y sin síntomas mediante tinciones DAPI (4’,6-diamidino-2-fenilindol y reacción en cadena de la polimerasa (PCR. Muestras positivas en la PCR fueron secuenciadas para identificar al fitopatógeno implicado. En individuos de ambas especies con síntomas de escoba de bruja, la tinción DAPI permitió observar cuerpos fluorescentes en los tejidos del floema, situaci

  1. TITLE: Tirso de Molina and The Trickster of Seville: The Traditionalist Hypothesis and the State of the Question. TÍTULO: Tirso de Molina y El burlador de Sevilla: la hipótesis tradicionalista y el estado de la cuestión

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    Alfredo Rodríguez López-Vázquez

    2011-04-01

    Full Text Available ABSTRACT: This paper analizes the critical and methodological basis of the two recent Studies about the problems on textual priority and authorship between Tan largo me lo fiáis and El burlador de Sevilla: the edition according to William F. Hunter’s text and the book by Laura Dolfi on the relationship between Tirso de Molina and Don Juan. Our study remarks important omissions in both works, both in the bibliographical field and the ecdotical basis regarding the two texts. We claim that both authors, supporters of the traditional hypothesis on authorship and priority, support their points of view in the form of critical opinions formulated in an insufficient way from the critic point of view and in an incomplete and biased way regarding ecdotical possibilities of both texts. RESUMEN: Este artículo analiza las bases críticas y metodológicas de dos recientes estudios sobre los problemas de la prioridad textual y de la autoría entre Tan largo me lo fiáis y El burlador de Sevilla: the edition according to William F. Hunter’s text and the book by Laura Dolfi sobre la relación entre Tirso de Molina y Don Juan. Nuestro estudio constata importantes omisiones en ambas obras, tanto en el campo bibliográfico como en la fundamentación ecdótica de ambos textos. Sostenemos que ambos autores, partidarios de la hipótesis tradicional sobre la autoría y la prioridad, exponen sus puntos de vista en forma de opiniones críticas formuladas de manera insuficiente desde el punto de vista crítico y de forma incompleta y parcial respecto a las posibilidades ecdóticas de ambos textos.

  2. Bioactivity of Peumus boldus Molina, Laurelia sempervirens (Ruiz & Pav. Tul. and Laureliopsis philippiana (Looser Schodde (Monimiacea essential oils against Sitophilus zeamais Motschulsky

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    Carmen Herrera-Rodríguez

    2015-09-01

    Full Text Available The maize weevil (Sitophilus zeamais Motschulsky is one of most important pest of stored seeds worldwide, but its current control method is based on the use of synthetic insecticides, usually leading to undesirable problems such as insecticide residues on treated food, human intoxications, and insect resistance development. Therefore the search of friendly alternative methods is required. The aim of this study was to assess, under laboratory conditions, the insecticidal properties of Peumus boldus Molina, Laurelia sempervirens (Ruiz & Pav. Tul., and Laureliopsis philippiana (Looser Schodde essential oils against S. zeamais. The phytochemical analysis of the three essential oils showed 1,8-cineole, safrole and methyleugenol as the common components; all of them documented with insecticidal activity from essential oils from other plant species. The highest toxicity (100% mortality of these three oils acting as a contact insecticide was observed at 24 h exposure at 4% concentration. The estimated LC50 values for P. boldus, L. sempervirens, and L. philippiana were 0.37, 1.02, and 0.28 μL g-1, respectively. Peumus boldus exhibited the highest fumigant activity with 100% adult mortality at 30 μL oil L-1 air. At ≥ 0.5% (v/w concentration, all essential oils showed repellent activity. These three essential oils showed a promissory insecticidal activity against the maize weevil.

  3. Effect of vacuum storage on shelf life of a grain protector based on Peumus boldus Molina foliage powder and lime against Sitophilus zeamais Motschulsk

    Directory of Open Access Journals (Sweden)

    Paulina Rivera

    2014-03-01

    Full Text Available The maize weevil (Sitophilus zeamais Motschulsky, Coleoptera: Curculionidae is a key pest of stored grain maize. As an ecological pest control alternative, the use of botanical insecticides, such as powder from boldus (Peumus boldus Molina foliage singly or mixed with lime, has been evaluated. Unfortunately, its shelf life is very short and does not exceed 15 d. The effectiveness of vacuum storage on insecticidal properties of a natural grain protector produced with boldus powder:lime at proportions of 50:50 and 60:40 against adults of S. zeamais was assessed under laboratory conditions. Treatments were evaluated at 1% and 2% (w/w for 150 d of storage. All treatments based on boldus powder kept the level of mortality by contact activity over 80% at 150 d of storage. The highest toxicity, as a fumigant, was observed in treatments 50:50 at 2% and 60:40 at 1% and 2% with mortality over 60%. The grain weight loss was less than 1% and seed germination was not affected. With the exception of 0:100 at 2% without vacuum storage, all treatments were repellent to S. zeamais. Vacuum storage extended shelf life of the grain protector for 150 d.

  4. Bioactivity of a water extract of boldus (Peumus boldus Molina against Spodoptera frugiperda (J.E. Smith and Helicoverpa zea Boddie (Lepidoptera: Noctuidae

    Directory of Open Access Journals (Sweden)

    Gonzalo Silva

    2013-06-01

    Full Text Available The insecticidal properties of water-extract of Peumus boldus Molina and its effect on the development cycle and feeding habits of Spodoptera frugiperda J.E. Smith and Helicoverpa zea Boddie were evaluated under laboratory conditions in concentrations of 0.25, 0.5, 1.0, 2.0, 4.0, and 8.0% (w/w. Spodoptera frugiperda was the most susceptible with 75% mortality at 7 d at 8% P. boldus concentration, while H. zea had only 30% mortality. LC50 was 2.31 mL kg-1 for S. frugiperda and 16.05 mL kg¹ for H. zea. When the extract concentration increased in the diet, larval size and weight, percentage of pupation and number of adults decreased, and the time required to reach those states was greater. Neonate larvae fed primarily on the diet with the lower extract concentration and the control was preferred by more than 50% of larvae. Inhibition of feeding, growth, weight gain of 3rd instar larvae as well as new biomass production decreased with concentration of the extract.

  5. Landscape dynamics and fire activity since 6740 cal yr BP in the Cantabrian region (La Molina peat bog, Puente Viesgo, Spain)

    Science.gov (United States)

    Pérez-Obiol, R.; García-Codron, J. C.; Pèlachs, A.; Pérez-Haase, A.; Soriano, J. M.

    2016-03-01

    A lack of paleobotanic studies with adequate resolution and multiproxy approaches has limited proper discussion of vegetation dynamics in Cantabria and of the role of fires in the configuration of the plant landscape during the Holocene in the northwest part of the Iberian peninsula. The pollen diagram of La Molina peat bog in Puente Viesgo (43°15‧38″ N-3°58‧37″ W; ETRS89), located at 484 m.a.s.l., and the study of its sedimentary charcoals allowed the acquisition of a continuous and thorough fire sequence for the last 6700 cal yr BP and an understanding of its relationship to the forest. The results show the importance of human influence on the incidence and characteristics of fire activity during the different phases studied: the Neolithic, Bronze Age, Iron Age, Roman period, and Middle Ages. A synergy seems to exist between dry climate periods (especially during Bond events 3 and 4) and a greater presence of biomass. As the Holocene advances, vegetation coverage clearly tends to decrease. This study provides key elements for understanding the role of fire activity in the forest dynamics of deciduous and evergreen Quercus, Corylus, Pinus, Fagus, and Alnus and demonstrates the strongly artificialized character of the present landscape.

  6. Symphonic Cantata «In the Temple of Golden Dreams» by Arthur Lourie for Mixed Chorus a cappella (1919: Innovation in the Field of Musical Language

    Directory of Open Access Journals (Sweden)

    Zaytseva Marina

    2017-01-01

    Full Text Available The article scientifically proves the importance of choral genres in the works by Arthur Lourie. The features of composition and the musical language of the symphonic cantata «In the Temple of Golden Dreams» by Arthur Lourie are identified. It is proved that the trends of symbolism and avant-garde affected the formation of the logic of intonation development , composite and harmonic solutions of the cantata. It is justified that the composer’s experiments in the fields of harmonic language, metroritm, texture, timbre brilliance largely anticipate the trends of the world music development. On the basis of the «In the Temple of Golden Dreams» symphonic cantata for mixed chorus a cappella A. Lurie, innovative methods of convergence of expressive possibilities of symphonic and choral scores, aimed at strengthening the capabilities of color and expressive choral sound are identified.

  7. 我国小学音乐合唱教学现状与问题研究%A Study on the Present Situation and Problems of Primary School Music Chorus Teaching in China

    Institute of Scientific and Technical Information of China (English)

    孙明明

    2016-01-01

    童声合唱一直以来就得到了人们的喜爱,那如天籁的声音是乐器无法比肩的。童声合唱在小学音乐教育中更是发挥越来越重要的作用,童声合唱除了对于孩子们的歌唱能力有积极的影响外,对于孩子们的思想品德、思维方式、想象力、团队意识、协作能力等等也有着潜移默化的影响。本文以小学音乐合唱教学为基础,对童声合唱历史、现状做出简单陈述,并就现如今我国小学音乐合唱教学问题进行分析,最后提出部分提高我国小学音乐合唱教学质量提高的方法及解决措施,以期能够对小学音乐合唱教学实践提供更多的理论依据,并使小学音乐合唱教学更加完善。%Children's chorus has obtained people's favorite, it sounds like the voice of the instrument is unable to shoulder. Children's chorus in music education in primary schools is to play a more and more important role, children's chorus in addition to have a positive impact on children's singing ability, for the children of the ideology and moral character, mode of thinking, imagination, team consciousness, cooperation ability and so on also has a silent influence of creep. This paper to primary school music teaching of chorus based, for children's chorus history, current situation make simple statements, and now my elementary school chorus teaching problems are analyzed. Finally, it puts forward part to improve the methods of improving the teaching quality of primary school choral music in China and measures to solve, in order to provide more theoretical basis for primary school choral music teaching practice, and the primary school choral music teaching to be more perfect.

  8. AVES DEL CAMPUS DE LA UNIVERSIDAD NACIONAL AGRARIA LA MOLINA (LIMA-PERÚ) - UNA REVISIÓN DE SU ABUNDANCIA, DISTRIBUCIÓN Y DIVERSIDAD DESDE 1992 AL 2010

    OpenAIRE

    Castillo Palacios, Lucía; Universidad Nacional Agraria La Molina (Perú).; Castañeda Córdova, Liz; Universidad Nacional Agraria La Molina (Perú).; Quinteros Carlos, Zulema; Universidad Nacional Agraria La Molina (Perú).

    2014-01-01

    El campus de la Universidad Nacional Agraria La Molina (UNALM) Lima – Perú, se presenta como un ecosistema variado y complejo con áreas agrícolas, urbanas y naturales. El presente trabajo es una compilación de tres estudios publicados en los años 1992, 2007 y 2010; y observaciones mensuales realizadas en el año 2010, con el fin de tener un panorama general sobre el cambio de la abundancia, distribución y diversidad de la comunidad de aves presente en la UNALM (1989-2010). Para el año 2010 se ...

  9. FLUCTUACIÓN POBLACIONAL INVIERNO – PRIMAVERA DE Pinnaspis aspidistrae (Signoret), Fiorinia fioriniae (Targioni Tozzetti), Chrysomphalus aonidum (Linnaeus) (HEMIPTERA: DIASPIDIDAE) Y SUS PARASITOIDES, EN PALTO. LA MOLINA, LIMA – PERÚ

    OpenAIRE

    2016-01-01

    Se realizaron observaciones sobre la fluctuación poblacional de Pinnaspis aspidistrae (Signoret), Fiorinia fioriniae (Targioni Tozzetti), Chrysomphalus aonidum (Linnaeus) y sus parasitoides en el cultivo de palto en el área agrícola de la Universidad Nacional Agraria La Molina. El campo se dividió en 5 sectores y se tomaron 5 árboles al azar por cada sector, donde se evaluaron semanalmente 200 hojas (haz y envés) en estratos (tercio medio e inferior) desde el 16 de julio hasta el 17 de diciem...

  10. Caracterización de los suelos de usos agrícolas e industrial de la comarca de Molina de Segura (Murcia) para una planificación racional del territorio

    OpenAIRE

    Gómez García, Ana María

    2016-01-01

    El presente estudio pretende conocer la situación actual de los suelos de la comarca de Molina de Segura (Murcia) así como ver si presentan una planificación racional del territorio ya que no había estudios anteriores que caracterizaran tan detalladamente los tipos y usos de los suelos de esta comarca. Los dos principales tipos de suelos presentes son Regosoles calcáricos (suelos poco evolucionados con un horizonte A ócrico en superficie como único horizonte diagnóstico y con abundante car...

  11. Teaching. Quality of Vocal Music in Colleges of China from Chorus Competition%从合唱比赛看我国高校的声乐教学质量

    Institute of Scientific and Technical Information of China (English)

    耿耀

    2012-01-01

    分析了我国合唱比赛中存在的问题。指出在音乐教学中,为求音色统一而存在声音观念上的误区,为求新颖别致而存在强调表现的误区。提出高质量的声乐教学是合唱团员良好音乐素养的保障。%The problems existing in chorus competition of China are analyzed. The misunderstandings in concept of voice for unified timbre, and focusing on performance to be unique in teaching of vocal music are pointed out. It is proposed that, the high-quality vocal teaching is the protection of the good music literacy of the members of chorus.

  12. The Artistic Performance Characteristics of the Mixed Chorus "Initiating a New Era"%略论地方本科院校历史学专业教学改革

    Institute of Scientific and Technical Information of China (English)

    钟玉发

    2012-01-01

    The mixed chorus "Initiating a New Era" is the representative works of Professor Ping Liming, a Chinese conductor and composer. It was awarded the prize "Five-One Projects" in the spiritual civilization of Guangdong Province in 2007. This chorus is felicitously structured, breaking through the traditional musical form. It combines Chinese and western mode and tonality, arranging voice part based on voice features, which provides large room for the development of refined lyrics. The mixed chorus "Initiating a New Era" has become an out- standing chorus works in China after being polished for many times.%21世纪以来,随着高等教育乃至初等教育改革日益向纵深方向发展,古老的历史学科面临重重压力与挑战。就本科院校的历史学专业教学而言,主要存在着“两通”比重过大、选修课门类太少、与中学历史教学实际需求联系不紧密以及培养学生能力的课程欠缺等。进一步改革的思路是,加强教师队伍自身建设和课程理念现代化,教学内容上压缩“两通”、增设选修课、突出师范特色并保持师范性与学术性的统一以及改进实践教学环节、提高学生的中学课堂教学和论文写作能力等。

  13. 论混声合唱《把崭新的世纪开创》的艺术特征%The Artistic Performance Characteristics of the Mixed Chorus "Initiating a New Era"

    Institute of Scientific and Technical Information of China (English)

    徐文博

    2012-01-01

    The mixed chorus "Initiating a New Era" is the representative works ot eroiessor ring blIIllIlg, il Chinese conductor and composer. It was awarded the prize "Five-One Projects" in the spiritual civilization of Guangdong Province in 2007. This chorus is felicitously structured, breaking through the traditional musical form. It combines Chinese and western mode and tonality, arranging voice part based on voice features, which provides large room for the development of refined lyrics. The mixed chorus "Initiating a New Era" has become an out- standing chorus works in China after being polished for many times.%混声合唱《把崭新的世纪开创》是作曲家平黎明教授的代表作品,2007年获得广东省第六届精神文明建设“五个一工程”奖。这首作品在结构上巧妙构建,突破了传统理论上的曲式结构;在调式调性上中西并用,巧妙地使用人声特点安排声部布局,为精炼的歌词拓展了广阔的发展空间;混声合唱《把崭新的世纪开创》在经过多次的锤炼后,已经成为一首优秀的合唱作品。

  14. Percepção da voz e saúde vocal em idosos coralistas Perception of voice and vocal health in aged chorus members

    Directory of Open Access Journals (Sweden)

    Regina Zanella Penteado

    2010-04-01

    Full Text Available OBJETIVO: analisar a percepção da voz e de suas alterações e os cuidados de saúde vocal de idosos coralistas. MÉTODOS: são sujeitos 10 idosos (seis mulheres e quatro homens do Coral Evangélico de Piracicaba (SP. Foi aplicado o questionário Qualidade de vida e voz (QVV, realizada entrevista aberta sobre o que acham da voz, queixas e cuidados e a avaliação vocal. Procedimentos de análise: análise de Conteúdo/análise temática, análise descritiva das questões, cálculo do escore global do QVV e análise perceptivo-auditiva fonoaudiológica por meio da escala GRBASI e avaliação dos parâmetros vocais. RESULTADOS: nove idosos avaliaram a voz como boa e apresentaram imagem vocal positiva, com escore médio de 96,5 pontos no QVV. Apesar disto, manifestaram dificuldades relacionadas com a respiração, articulação, modulação, além de alterações vocais em grau leve (rugosidade e soprosidade na avaliação fonoaudiológica. Os cuidados com a voz se mostraram insuficientes para a promoção da saúde vocal. CONCLUSÃO: o grupo de idosos coralistas pesquisado, apesar de não ter queixas e estar satisfeito com a voz, apresenta dificuldades relacionadas aos cuidados de saúde vocal, à percepção da voz e do processo saúde-doença vocal bem como parâmetros alterados.PURPOSE: to analyze the perception of voice, its alterations and vocal health care in aged chorus members. METHODS: subjects are ten (six woman and four man aged members of Piracicaba's Evangelic Chorus. QVV (Quality of life and voice questionnaire was applied through an open interview on voice, complaints and cares; and vocal evaluation. Analysis procedures: Content/thematic analysis, descriptive analysis of the questions, calculating the QVV global score, and perceptual auditory analysis using GRBASI scale and evaluation of vocal parameters. RESULTS: nine subjects evaluated their own voice as good and showed a positive vocal image, with a mean score of 96.5 points in

  15. COMPARAÇÃO DA QUALIDADE SANITÁRIA ENTRE AMOSTRAS DE Peumus boldus Molina INDUSTRIALIZADAS E ARTESANAIS DO MUNICÍPIO DE CURRAIS NOVOS, RN.

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    Fabio Gonçalves Macêdo de Medeiros

    2012-06-01

    Full Text Available As plantas medicinais, embora constituam válida vertente da Medicina Tradicional, quando mal utilizadas representam risco potencial a saúde humana. O consumo de produtos contaminados pode gerar intoxicações diversas por subprodutos advindos de microrganismos patogênicos. O presente trabalho objetivou a avaliação da qualidade microbiológica de amostras de Peumus boldus Molina artesanais, comercializadas na feira popular, e compará-la com a qualidade microbiológica de amostras da mesma espécie industrializadas, comercializadas no comércio varejista local. Foram quantificados: aeróbios mesófilos (ágar Padrão de Contagem, 35±1°C/24h, coliformes totais/Escherichia coli (teste presuntivo: caldo LST, 35±0,5°C/24-48±2; CT: caldo VB, 35±0,5°C/24-48±2; E. coli: caldo EC, 44,5±0,2°C/24±2h; ágar L-EMB, 35±0,5°C/24±2h, bolores e leveduras (ágar Batata Dextrosado Acidificado, 25±1°C/5 dias e Staphylococcus aureus (ágar Baird-Parker, 35-37°C/24±2h. Para a confirmação de E. coli, colônias foram submetidas às provas bioquímicas da série IMViC. A E. coli estava presente em 10% das amostras, o S. aureus em 50%, bolores e leveduras em 80% e aeróbios mesófilos em 100% das amostras analisadas. O estudo revelou que a tanto amostras industrializadas quanto artesanais não estavam de acordo com as recomendações de padrões sanitários e microbiológicos adequados para o comércio, caracterizando-se como riscos potenciais à Saúde Pública.

  16. 评侗族大歌音乐诗剧《行歌坐月》%Review of the Dong Chorus Musical Drama-Song and Moon

    Institute of Scientific and Technical Information of China (English)

    傅安辉; 吴媛姣; 吴文梅

    2015-01-01

    《行歌坐月》是首个登上国家大剧院的侗族题材剧目。侗族大歌音乐诗剧《行歌坐月》在京首演成功,再一次证明了民族传统文化艺术可以焕发艺术新生。侗戏文化唯有扬弃和吐故纳新,才具有鲜活的生命力和欣欣向荣的发展前景。侗族大歌音乐诗剧《行歌坐月》作为探索传统与现代创作联手的范式,无疑是保护民族传统文化的新途径,更是探索发展民族文化产业的开路先锋。%Song and Moon is the first Dong theme drama to reach the national theatre, In Beijing,the successful premiere of the Dong Chorus Musical Drama—Song and Moon proved again that the national traditional culture and arts can be full of art renaissance, As a traditional paradigm in conjunction with modern creation,the drama is undoubtedly the new approach to protecting the national traditional cul-ture and the pioneer as well in exploring the development of the ethnic culture industry as.

  17. First estimates of the probability of survival in a small-bodied, high-elevation frog (Boreal Chorus Frog, Pseudacris maculata), or how historical data can be useful

    Science.gov (United States)

    Muths, Erin L.; Scherer, R. D.; Amburgey, S. M.; Matthews, T.; Spencer, A. W.; Corn, P.S.

    2016-01-01

    In an era of shrinking budgets yet increasing demands for conservation, the value of existing (i.e., historical) data are elevated. Lengthy time series on common, or previously common, species are particularly valuable and may be available only through the use of historical information. We provide first estimates of the probability of survival and longevity (0.67–0.79 and 5–7 years, respectively) for a subalpine population of a small-bodied, ostensibly common amphibian, the Boreal Chorus Frog (Pseudacris maculata (Agassiz, 1850)), using historical data and contemporary, hypothesis-driven information–theoretic analyses. We also test a priori hypotheses about the effects of color morph (as suggested by early reports) and of drought (as suggested by recent climate predictions) on survival. Using robust mark–recapture models, we find some support for early hypotheses regarding the effect of color on survival, but we find no effect of drought. The congruence between early findings and our analyses highlights the usefulness of historical information in providing raw data for contemporary analyses and context for conservation and management decisions.

  18. Análise da contaminação fúngica em amostras de Cassia acutifolia Delile (sene e Peumus boldus (Molina Lyons (boldo-do-Chile comercializadas na cidade de Campinas, Brasil Analysis of the fungal contamination in Cassia acutifolia Delile (sene and Peumus boldus (Molina Lyons (boldo-do-Chile sold in Campinas, Brazil

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    Liliana de O. Rocha

    2004-12-01

    Full Text Available A sociedade atual tem buscado a fitoterapia como um importante recurso terapêutico, sendo a avaliação da qualidade microbiológica destes produtos um requisito essencial, considerando a sua origem. Deste modo, o objetivo da pesquisa foi realizar a contagem e a identificação de fungos filamentosos em 20 amostras de folhas de Cassia acutifolia Delile (sene e de Peumus boldus (Molina Lyons (boldo-do-Chile comercializadas em farmácias de manipulação e mercados da cidade de Campinas, Brasil, usando as técnicas microbiológicas clássicas. Os resultados obtidos evidenciaram que 45% das amostras analisadas se situavam fora dos padrões estabelecidos pela Organização Mundial da Saúde (OMS. Não foram observadas diferenças significativas na análise quantitativa da contaminação fúngica entre amostras comercializadas em farmácias de manipulação e mercados, tanto para o boldo-do-Chile como para a sene. Os fungos identificados nestas amostras foram: Aspergillus, Penicillium, Phoma, Cladosporium, Trichoderma, Rhizopus, Mucor, Aureobasidium pullulans, Mycelia sterilia, Acremonium e Monilia sitophila. Estes resultados demonstraram o baixo nível de qualidade desses fitoterápicos, pois, além do elevado número de amostras contaminadas, foram identificados fungos de gêneros produtores de micotoxinas, como o Aspergillus e o Penicillium. Verifica-se a urgência na realização de adequado controle de qualidade microbiológico dos fitoterápicos e de implantação de fiscalização efetiva, para garantir a segurança e eficácia destes produtos.The consumption of medicinal plants has increased during the last years. The purpose of this study was to evaluate and identify fungi specimens present in samples of Cassia acutifolia Delile (20 (sene and Peumus boldus (Molina Lyons (Boldo-do-Chile (20, that were purchased in drugstores and markets of Campinas, Brazil, by usual methods. The results showed that 45% of samples did not fit the minimum

  19. Polyphenol content and antioxidant activity of maqui (Aristotelia chilensis Molina Stuntz during fruit development and maturation in Central Chile Contenidos de polifenoles y actividad antioxidante de maqui (Aristotelia chilensis Molina Stuntz durante el desarrollo y maduración de frutos en Chile Central

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    Carolina Fredes

    2012-12-01

    Full Text Available Maqui (Aristotelia chilensis Molina Stuntz, Elaeocarpaceae is a Chilean native species which produces small berries that are mainly collected from the wild. The health benefits of maqui fruit are attributed to their high polyphenol content as well as their wide variety of anthocyanins and flavonols. One of the main factors that affect the polyphenol content in fruit is the maturity stage at harvest. The objective of this study was to determine total phenol and total anthocyanin content and antioxidant activity (by ferric reducing ability of plasma FRAP assay of maqui fruits harvested at different fruit maturity stages from two wild populations located in Central Chile. Each maturity stage was determined by days from fruit set, berry size, and soluble solids. Total phenol content declined while total anthocyanin content increased from the green to light red stage. Nevertheless, both total phenol and anthocyanin content increased from the light red to dark purple stage. The highest anthocyanin content and antioxidant activity was found in the late maturity stage (dark purple. The results show that ripening in maqui fruit can be expected with 1100 growing degree-days (91 d after fruit set in Central Chile. At this moment of harvest, fruits with 18-19 °Brix have the highest anthocyanin content and antioxidant activity (FRAP. This study constitutes the first advances in the understanding of maqui fruit ripening and corresponding antioxidant activity.El maqui (Aristotelia chilensis Molina Stuntz, Elaeocarpaceae es una especie nativa de Chile que produce unas bayas pequeñas que se recolectan principalmente de individuos silvestres. Los beneficios para la salud atribuidos a los frutos de maqui se deben a sus altos contenidos de polifenoles, así como a la gran variedad de antocianos y flavonoles. Uno de los principales factores que afectan el contenido de polifenoles en frutos es el estado de madurez a la cosecha. El objetivo de este estudio fue

  20. Importance and practices of Egusi crops (Citrullus lanatus (Thunb. Matsum. & Nakai, Cucumeropsis mannii Naudin and Lagenaria siceraria (Molina Standl. cv. 'Aklamkpa' in sociolinguistic areas in Benin

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    Coulibaly O.

    2008-01-01

    Full Text Available Importance et culture de Egusi (Citrullus lanatus (Thunb. Matsum. & Nakai, Cucumeropsis mannii Naudin et Lagenaria siceraria (Molina Standl. cv ' Aklamkpa ' dans les régions sociolinguistiques du Bénin. Les légumes traditionnels africains sont considérés comme potentiellement utiles pour contribuer à la sécurité alimentaire et à la génération de revenu au niveau des communautés locales. Cependant, Egusi (Citrullus lanatus subsp. mucosospermus, Cucumeropsis mannii et Lagenaria siceraria cv. ' Aklamkpa ' a rarement fait l'objet de recherche et de promotion alors que sa culture persiste dans les systèmes de production de plusieurs pays de l'Afrique de l'Ouest. Cette étude met l'accent sur le rôle social des cultures de Egusi et leur importance dans le système de production des groupes sociolinguistiques au Bénin. En 2005, une investigation des systèmes de production et de culture de cinq régions socioculturelles prédominantes indique que la culture de Egusi est classée parmi les dix premières spéculations, selon la perception des ménages interrogés. Le rang attribué aux cultures de Egusi est relatif au genre mais pas à l'âge. Les agriculteurs allouent en moyenne 0,74 ha pour la production de Egusi, avec une différence significative d'une région sociolinguistique à une autre. Dans la communauté Mahi-Fon du centre Bénin, par exemple, nous avons observé des champs de production de Egusi allant jusqu'à 5 ha. L'espèce la plus cultivée est C. lanatus subsp. mucosospermus. Cependant, dans la communauté Adja du sud Bénin, la préférence des agriculteurs est pour L. siceraria cv. ' Aklamkpa '. Egusi se cultive au champ et en jardin de case, soit en association ou en monoculture. C. mannii est généralement cultivée en association et joue un rôle social très important dans les communautés Nagot-Yoruba. Bien que Egusi ne soit pas une culture réservée aux femmes, ces dernières réalisent la plupart des activit

  1. El túnel viario de María de Molina en Madrid. Optimización en el diseño y descripción de las soluciones estructurales adoptadas

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    Granda San Segundo, Laura

    2002-08-01

    Full Text Available Maria de Molina tunnel which will join paseo de la Castellana and Velázquez street with the N-II highway (Madrid - Barcelona will be the largest municipal underground work in Spain. The tunnel is 1171 meters long and it will absorbe a traffic of 30000 vehicles going out every day. The initial part of the tunnel has been designed as false tunnels made with foundation walls and slabs. The concrete has been cast over the ground and the tunnel has been excavated afterwards in order to minimize the effect of the work on Madrid traffic. Once a sufficient depth has been reached, two different construction systems have been proposed, depending on the conditions the tunnel finds in each case. The project presents some singular points in which the solutions adopted are structurally extraordinary.El túnel viario de María de Molina, que unirá el Paseo de la Castellana y la calle Velázquez con la N-II de Madrid a Barcelona, constituirá la mayor obra municipal de pasos subterráneos. El túnel de un total de 1.171 m de longitud va a absorber una salida de tráfico de 30.000 vehículos diarios. En los tramos iniciales se han proyectado falsos túneles con pantallas y losas hormigonadas sobre el terreno y excavadas a posteriori, para minimizar los efectos tráfico. Cuando se alcanza una profundidad adecuada se ha planteado la ejecución de un túnel con dos sistemas constructivos diferentes, dependiendo de los condicionantes que se encuentran en cada momento. El proyecto presenta una serie de puntos singulares en los que las soluciones adoptadas son estructuralmente extraordinarias

  2. Caractérisation botanique et agronomique de trois espèces de cucurbites consommées en sauce en Afrique de l'Ouest : Citrullus sp., Cucumeropsis mannii Naudin et Lagenaria siceraria (Molina Standl

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    Zoro Bi I.A.

    2003-01-01

    Full Text Available Botanical and agronomical characterisation of three species of cucurbit consumed as sauce in West Africa: Citrullus sp., Cucumeropsis mannii Naudin and Lagenaria siceraria (Molina Standl. There are in Côte d'Ivoire at least five species of cucurbit incorrectly called ""pistaches"" in town and cultivated at small scale by women for their oleaginous seeds that are a great importance in the sociocultural live of several peoples. Nevertheless, few studies aimed at the improvement of these plants (related notably to taxonomy, genetic resources collecting missions, genetic characterisation, agronomic evaluation, and selection have been carried out. In order to set up a list of reliable traits that should be examined easily during and after collecting missions, we carry out in the present study, for three species (Citrullus sp., Cucumeropsis mannii Naudin and Lagenaria siceraria (Molina Standl a botanic description and an analysis of eleven agronomic traits: 100-seeds weight, germination rate, seedlings emergence time, matured fruit weight, matured fruit decomposition time, mean number of seeds per fruit, seeds shape, fruit diameter, fruit interior cavity diameter, flowering time, and fruiting time. Statistical analyses using nine of these traits showed that the three species can be completely distinguished with six traits whereas the three other traits allowed partial distinction. Low yields have been observed for the three species: 11.41 kg/ha of decorticated seeds for C. mannii, 18.51 kg/ha for Citrullus sp. and 75.14 kg/ha for L. siceraria. From the observed yield components, the possibilities to improve the production of these cucurbits are discussed.

  3. Finding your mate at a cocktail party: frequency separation promotes auditory stream segregation of concurrent voices in multi-species frog choruses.

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    Vivek Nityananda

    Full Text Available Vocal communication in crowded social environments is a difficult problem for both humans and nonhuman animals. Yet many important social behaviors require listeners to detect, recognize, and discriminate among signals in a complex acoustic milieu comprising the overlapping signals of multiple individuals, often of multiple species. Humans exploit a relatively small number of acoustic cues to segregate overlapping voices (as well as other mixtures of concurrent sounds, like polyphonic music. By comparison, we know little about how nonhuman animals are adapted to solve similar communication problems. One important cue enabling source segregation in human speech communication is that of frequency separation between concurrent voices: differences in frequency promote perceptual segregation of overlapping voices into separate "auditory streams" that can be followed through time. In this study, we show that frequency separation (ΔF also enables frogs to segregate concurrent vocalizations, such as those routinely encountered in mixed-species breeding choruses. We presented female gray treefrogs (Hyla chrysoscelis with a pulsed target signal (simulating an attractive conspecific call in the presence of a continuous stream of distractor pulses (simulating an overlapping, unattractive heterospecific call. When the ΔF between target and distractor was small (e.g., ≤3 semitones, females exhibited low levels of responsiveness, indicating a failure to recognize the target as an attractive signal when the distractor had a similar frequency. Subjects became increasingly more responsive to the target, as indicated by shorter latencies for phonotaxis, as the ΔF between target and distractor increased (e.g., ΔF = 6-12 semitones. These results support the conclusion that gray treefrogs, like humans, can exploit frequency separation as a perceptual cue to segregate concurrent voices in noisy social environments. The ability of these frogs to segregate

  4. Avaliação da qualidade de amostras comerciais de boldo (Peumus boldus Molina, pata-de-vaca (Bauhinia spp. e ginco (Ginkgo biloba L. Control quality evaluation of commercial samples of boldo (Peumus boldus Molina, pata-de-vaca (Bauhinia spp. and ginkgo (Ginkgo biloba L.

    Directory of Open Access Journals (Sweden)

    J. G. de Melo

    2004-01-01

    Full Text Available O presente trabalho procurou avaliar a qualidade de produtos comercializados à base de boldo, pata-de-vaca e ginco, através dos parâmetros contidos na Farmacopéia Brasileira e na literatura específica. Foram analisadas oito amostras de boldo, nove de pata-de-vaca e sete de ginco, adquiridas em farmácias na cidade do Recife. A metodologia consistiu em avaliar: os rótulos e bulas dos produtos verificando se estavam de acordo com a RDC n o 17 de 24/02/2000 e a portaria 110/97 da ANVISA; realizar análise sensorial; verificar a autenticidade das amostras e sua pureza. Todas as embalagens de boldo, pata-de-vaca e seis de ginco continham erros ou ausência de informações científicas, além da falta de bula. Na verificação de impurezas, todas as de boldo, cinco de pata-de-vaca, e uma amostra de ginco foram reprovadas. Todos os produtos analisados apresentaram alguma irregularidade segundo os códigos oficiais, sendo necessário uma maior intensificação na vigilância de produtos à base de plantas medicinais no Brasil.This study aimed to evaluate the quality of commercial products prepared with boldo (Peumus boldus Molina, pata-de-vaca (Bauhinia spp. and ginkgo (Ginkgo biloba L. by using parameters from the Brazilian Pharmacopoeia and specific literature. Eight samples of "boldo", nine of "pata-de-vaca", and seven of ginkgo were analyzed, all bought from pharmacies in Recife (Pernambuco, Brazil. The methodology consisted in evaluating the products’ labels and instructions to verify their accordance to RDC n o 17 of 02/24/2000 and ANVISA (National Sanitary Surveillance Agency decree 110/97, undertaking a sensorial analysis, and verifying the authenticity and purity of the samples. All of the packages of "boldo" and "pata-de-vaca" and six of the packages of ginkgo contained mistakes or lacked scientific information; instructions were also missing. After analyzing for impurities, all samples of "boldo", five of "pata-de-vaca", and one of

  5. A Study of Present Situation and Countermeasures of Primary School Chorus Education in the Undeveloped Areas——A Case Study of the Northern Mountainous Guangdong%经济欠发达地区小学合唱教育现状与对策研究——基于广东省粤北山区的实证研究

    Institute of Scientific and Technical Information of China (English)

    张鸿舜

    2011-01-01

    随着素质教育、创新教育、新课改的不断深入,合唱教育在小学音乐教育中日益得到更多的重视.近年来,珠江三角洲成为了中国合唱艺术最活跃的地区之一,作为其重要组成部分的小学合唱教育也得到了蓬勃的发展,但同属广东省的韶关地区小学合唱教育的情况就不容乐观.文章通过对小学教师与学生的问卷调查、个别访谈、文献分析等形式的调查研究,对韶关地区小学合唱教育的现状进行深入的调查分析,并寻找影响合唱教育水平的重要因素,寻求改善本地区小学合唱教育状况的对策.%Following the deep development of quality education,enterprising education and reforms of new courses,chorus education is gradually attached great importance in the musical education of primary schools.In recent years,the Pearl River Delta has become one of the most active areas for China's chorus arts,Primary school chorus education,as an important part of chorus arts,also develops prosperously.But its current situation in Shaoguan area is not so optimistic.This essay,which makes a deep survey and analysis on the current state of primary school chorus education in Shaoguan area,is trying to search for important factors influencing chorus education quality and to find solution contributing to the improvement of local chorus educating situation through forms of questionnaire,individual interviews and documentary analysis.

  6. Intervention of Multi-part Chorus on Mental Health Status of Adult Prisoners%多声部合唱对罪犯心理健康状况的干预研究

    Institute of Scientific and Technical Information of China (English)

    王莉; 练恒胜; 刘小超; 高歌

    2014-01-01

    Objectives To explore the effect of multi-part chorus on mental health in adult prisoners and to give refer-ence for psychological treatment in criminal theory of reforming practice.Methods Sixty prisoners were randomly chosen as research objects and divided into control and intervention group.The intervention group practiced multi-part chorus and were followed up for 3 months.The effect of intervention was evaluated with Self-Rating Anxiety Scale (SAS),Trust Scale,Social Avoidance and Distress Scale (SAD),shyness scale,UCLA loneliness Scale (UCLA),and Chinese Offender Psychological Assessment-Personality Inventory (COPA-PI).Results Compared with the control group,the differ-ences in anxiety,trust-d,loneliness,social avoidance and distress,extraversion and impulse showed significant change in the intervention group before and after intervention.Conclusions Multi-part chorus is an effective way to improve mental healthiness and promote psychological health level of prisoners.%目的:探讨多声部合唱干预对罪犯心理健康状况的影响,为监狱心理矫治工作提供参考。方法选取狱中60名罪犯作为受试对象,随机分为试验组与对照组。采用多声部合唱方法对试验组罪犯的心理健康状况进行干预试验,观察3个月。于干预前后采用焦虑自评量表、信任量表、社交回避及苦恼量表、羞怯量表、UCLA 孤独量表、中国罪犯心理测试个性分测验(COPA-PI)对其进行心理测试和评估。结果试验组罪犯群体经过多声部合唱干预前后与对照组罪犯群体对比,在焦虑、信任-D、孤独、社交回避与苦恼、COPA-PI(外倾、冲动)等因子差异具有统计学意义。结论多声部合唱能有效改善罪犯群体的心理健康状况,提高罪犯的心理健康水平。

  7. In vitro polymerization of mussel polyphenolic proteins catalyzed by mushroom tyrosinase.

    Science.gov (United States)

    Burzio, L A; Burzio, V A; Pardo, J; Burzio, L O

    2000-07-01

    The in vitro enzymatic polymerization of the polyphenolic protein purified from the mussels Aulacomya ater, Mytilus edulis chilensis and Choromytilus chorus was studied. Mushroom tyrosinase was used to oxidize the dopa residues present in these proteins, and polymerization was monitored by acid-urea polyacrylamide gel electrophoresis. The protein from A. ater polymerized at a faster rate than the other two. Amino acid analysis of the crosslinked protein showed a notable decrease in the content of dopa, but no significant change of other amino acids. This suggests that crosslink formation may be limited to the oxidized dopa derivatives of the protein molecules.

  8. PRODUCCION A ESCALA PILOTO DE HEMBRAS DE CHORO ZAPATO CON COLOR GONADAL MODIFICADO MEDIANTE TECNICAS BIOTECNOLOGICAS

    OpenAIRE

    TARIFEÑO S., EDUARDO

    2010-01-01

    El Choro zapato (Choromytilus chorus) es un mejillón autóctono en Chile con grandes condiciones para su cultivo masivo por su tamaño y rápido crecimiento, comparado con la especie principal de la mitilicultura chilena, el chorito chileno (Mytilus chilensis). Sin embargo, el color café oscuro de las gónadas de las hembra del choro zapato es un factor limitante que frena el interés de los mitilicultores por su cultivo. En base a los resultados del proyecto FONDEF D01-1110 “Biotecnología aplicad...

  9. Purification of adhesive proteins from mussels.

    Science.gov (United States)

    Pardo, J; Gutierrez, E; Sáez, C; Brito, M; Burzio, L O

    1990-11-01

    The adhesive polyphenolic proteins from the mussels Mytilus chilensis and Choromytilus chorus have been purified based on their solubility in dilute perchloric acid and on differential precipitation with acetone containing about 0.3 N HCl. The specific activity of the proteins obtained was 0.16 mg of 3,4-dihydroxyphenylalanine per milligram of protein, or higher. The proteins have an apparent molecular weight of about 100,000 and they contain a high proportion of 3,4-dihydroxyphenylalanine, lysine, and proline.

  10. Tirso de Molina, Indios y Encomenderos

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    Caro López, Ceferino

    1997-08-01

    Full Text Available In the text of Tirso's Trilogía de los Pizarro elements are to be found which allow to affirm that the playwright availed himself of an occasional commission to make an instrument of political criticism aiming at false advisers and validos. Tirso fought against the novelties in the government and policy of the Inidies and stood for the abolition of the humanitarian measures of the Leyes Nuevas and the strengthening of the encomenderos' power. Thus the Trilogy presents itself as a telling instance of the mental shift between Renaissance erasmism and the crisis of the Counter-Reformation.

    En la Trilogía de los Pizarro hay elementos que permiten afirmar que el dramaturgo usó un encargo ocasional para hacer un instrumento de crítica de la política de su tiempo, poniendo en evidencia la figura de los validos y de los malos consejeros. Contra las novedades introducidas en el gobierno y en la política indiana Tirso proponía la abolición de las medidas humanitarias incluidas en las Leyes Nuevas y el fortalecimiento de la autoridad de los encomenderos. La Trilogía se presenta por lo tanto como un ejemplo del cambio cultural entre el erasmismo del Renacimiento y la crisis de la Contrarreforma.

  11. Mastering the art implied meaning and feeling the beauty of the music——discussion on use of synaesthesia experience in college students' chorus training%通艺术深意感音乐之美——浅议通感体验在大学生合唱训练中的运用

    Institute of Scientific and Technical Information of China (English)

    邓婷婷

    2012-01-01

      音乐不仅是听觉的艺术,还是“多觉”最终归于“心觉”的艺术。艺术通感研究是人类审美和艺术活动研究的重要组成部分,也是当前艺术教育深化改革的迫切需求。文章立足于大学生合唱教育的视阈,针对当今大学生合唱艺术感染力不强的特点,对通感及相关的教育启示进行了研究,在认识通感体验的基础上,提出了通感体验运用到合唱训练的方法。%  Music is not only the art of hearing but also art of " more sense" ultimately attributed to "heart sense " . Artistic synaesthesia research are important components of human aesthetic and artistic activity, is also the current urgent needs of deepening the reform of art education. Based on the college students' chorus perspective education, According to features that choral artistic appeal of today college students are not strong, synesthesia and related to education were studied, On the basis of understanding the experience of synesthesia, methods of Synaesthetic experience applied in chorus training were proposed.

  12. Case 3058. Arctocephalus F. Cuvier, 1826 and Callorhinus Gray, 1859 (Mammalia, Pinnipedia): proposed conservation by the designation of Phoca pusilla Schreber, [1775] as the type species of Arctocephalus; and Otaria Peron, 1816 and Eumetopias Gill, 1866: proposed conservation by the designation of Phoca leonina Molina, 1782 as the type species of Otaria

    Science.gov (United States)

    Gardner, A.L.; Robbins, C.B.

    1999-01-01

    The purpose of this application is to conserve the accustomed understanding and usage of the fur seal name Arctocephalus F. Cuvier, 1826 by the designation of Phoca pusilia Schreber, [1775] as the type species, thus conserving also the name Callorhinus Gray, 1859. At present Phoca ursina Linnaeus, 1758 is the valid type species of both Arctocephalus and Callorhinus. The name Arctocephalus relates to a genus of some seven fur seals from the southern hemisphere, while Callorhinus is used for the single species C. ursinus (Linnaeus) from the northern hemisphere. It is also proposed that the universal understanding of the names Otaria Peron, 1816 and Eumetopias Gill, 1866 should be conserved for the southern and northern sea lions respectively by designating Phoca leonina Molina, 1782 (for which the valid specific name is P. byronia de Blainville, 1820) as the type species of Otaria. At present Phoca jubata Schreber, [1776] is the type species of Otaria and the name Otaria is a senior subjective synonym of Eumetopias. The four genera Arctocephalus, Callorhinus, Otaria and Eumetopias are all placed in the family OTARIIDAE Gray, 1825.

  13. Aproximación a la confrontación jurídico-económica entre María de Molina y las aljamas castellanas a finales del siglo XIII y principios del siglo XIV

    Directory of Open Access Journals (Sweden)

    Rica AMRAN

    2006-01-01

    Full Text Available Ce travail a été conçu dans une perspective bien précise : l’aspect historiographique de la question, introduit par les chroniques. Toutefois, à cause du laconisme de ces textes, et bien que la base de notre étude soit le récit historiographique des règnes de Sanche IV et de Ferdinand IV, nous avons aussi utilisé la documentation des cortès et celle de la collection Burriel. D’autres documents, relatifs à des conciles et à des synodes, proviendront de la jurisprudence ecclésiastique. Nous évoquerons d’abord les communautés juives castillanes dans leur situation interne (sociale et spirituelle et analyserons la situation économique à laquelle la majorité de leurs membres fut soumise, avant de passer au coeur de notre propos : les relations de Marie de Molina avec les juifs (points communs avec les époques antérieures, changements provoqués par la reine et enfin signification de sa politique envers cette minorité et impact de celle-ci au XIVe siècle.El presente trabajo ha sido concebido bajo una visión bien dirigida : la vertiente historiográfica que introducen las crónicas. Sin embargo y debido a la parquedad de las mismas, y aunque las bases serán estas, las del periodo de Sancho IV y Fernando IV, me he permitido también utilizar los documentos de Cortes, al mismo tiempo que algunos sobre el periodo insertos en la colección Burriel ; otros provendrán de la jurisprudencia eclesiástica, relativos a concilios y sínodos. Y ya en un segundo plano trabajaremos sobre las aljamas castellanas (situación social y espiritualidad desde un punto de vista interno ; analizaremos desde la óptica de la mayoría la situación económica a los que estos se vieron sometidos y por último, lo que será el centro de nuestro estudio, la relación de María de Molina con la comunidad judía : los puntos comunes con épocas anteriores, los cambios que esta realiza en su relación con la comunidad, para concluir con lo que

  14. 广东作曲家流行音乐交响化创作的实践——以21首用流行歌曲改编的交响合唱为例%The Practice of Guangdong Composers' Symphonic Creation on Popular Music: with 21 symphony chorus recomposed from popular songs for example

    Institute of Scientific and Technical Information of China (English)

    何平; 潘谊

    2012-01-01

    It has apparently been a powerful brushstroke in the history of Guangdong popular music that popular music has been performed in the form of a symphony chorus. "Tao Sheng Yi Jiusymphony chorus concert for the 30th anniversary of Guangdong popular music" is of great historical significance. The holding of this concert has proved that popular music and classical music (symphonic music or serious music) have no insurmountable gap in terms of the content and the form ; and that the development of popular music has its own tradition, but the diversi- fied forms of expression will provide wider development space for popular music. The recomposed work of these 21 popular songs performed in the concert with the form of Symphony Chorus is based on two principles: be faithful to the original basic style; and to innovate on the basis of origin. This has actually set the high creation principle for people doing the work. The 21 pieces of adaptation eventually created three types of works. Meanwhile, Guangdong Composers" choreographing practice on popular music makes it possible for people to have an opportunity to reflect on the artistic value of popular music.%将流行音乐作品以交响合唱的形式重新进行演绎,显然在广东流行音乐发展史上具有浓烈的一笔。“涛声依旧——广东流行音乐30周年交响合唱音乐会”,就是这样具有历史意义的一笔。音乐会的举办,给人们提出了两点参考:流行音乐与古典音乐(或交响音乐、严肃音乐)在内容和形式上并没有什么不可逾越的鸿沟;流行音乐的发展固然有自己的传统,但多元化的表现形式,将为流行音乐提供更为广阔的发展空间。音乐会上演出的21首交响合唱形式的流行歌曲,其改编工作,基于两点原则:忠实于原创的基本品格;在忠于原创的基础上进行创新。这实际上为改编者提出了较高的创作原则。21首作品的改编最终形

  15. Nuclear Sm antigens in the sperm of different organisms.

    Science.gov (United States)

    Delgado, F; Brito, M; Concha, I I; Schroeder, R; Burzio, L O

    1994-08-01

    Immunoblot analysis of sperm protein from several species revealed the presence of polypeptides recognised by anti-Sm sera obtained from patients with systemic lupus erythematosus. Immunoreactive polypeptides in human, bull, mouse and rat sperm were identified as protein B', B and D as compared with the Sm polypeptides of HeLa cells. In the sperm of rooster, the teleost fish Cyprinus carpio and the mussel Choromytilus chorus, the immunoreactive polypeptide profile was more complex. To ascertain the sperm origin of the Sm antigens, immunolocalisation with anti-Sm serum was carried out. The results demonstrated that in all the species studied staining was confined to the sperm nucleus, confirming that some polypeptides of the small nuclear ribonucleoprotein complex are present in the gamete.

  16. Movilidad, redes de intercambio y circulación de bienes en el sudoeste del Neuquén (Norpatagonia, Argentina: Los moluscos marinos del lago Traful Mobility, Exchange Networks And Circulation Of Goods In Southwestern Neuquén, Northern Patagonia, Argentina: The Marine Mollusks From Traful Lake

    Directory of Open Access Journals (Sweden)

    Mario Silveira

    2010-12-01

    Full Text Available Se determina la procedencia de fragmentos de moluscos marinos hallados en los aleros Los Cipreses y Lariviere, en el área del lago Traful, sur de la provincia de Neuquén. Estudios previos en áreas cercanas con mayor proximidad a la costa del océano Pacífico suponen que las piezas recuperadas evidencian contacto con grupos provenientes del lado occidental de la cordillera de Los Andes -Chile. En este trabajo se indica que parte de las valvas estudiadas corresponden a fósiles marinos o fluviales no identificados. Los fragmentos identificados corresponden al gasterópodo marino Adelomelon brasiliana procedente del Atlántico y al bivalvo Choromytilus chorus posiblemente del Pacífico. Estos datos, sumados a los recientes análisis sobre muestras de obsidiana procedentes de fuentes de aprovisionamiento del sudoeste neuquino que circularon grandes distancias hacia la costa atlántica, resaltan la complejidad y extensión de la movilidad humana y/o de las redes interregionales de intercambios.In this article the origin of fragments of marine shells found at Los Cipreses and Lariviere rock-shelters is presented. Consistent with studies by other authors in nearby areas in greater proximity to the Pacific coast, it was assumed that these fragments indicated contact with groups from the western side of the Chilean Andes. The results show that the shells correspond to marine or unknown fluvial fossils; a few pieces correspond to a marine gasteropod of great size, Adelomelon brasiliana, from the Atlantic Ocean and the bivalve Choromytilus chorus, probably from the Pacific. These data, and the recent analysis of samples of obsidian from sources located in southwestern Neuquén, which circulated far toward the Atlantic coast, highlight the complexity and extent of human mobility and interregional exchange networks.

  17. SPECIES DIVERSITY OF LONG GOURD LAGENARIA SICERARIA (MOLINA STANDL

    Directory of Open Access Journals (Sweden)

    Tsatsenko L. V.

    2014-01-01

    Full Text Available The issues of international spread of fruits of long gourd lagenaria and the introduction of it in culture are considered in the article. We have shown how to use it as a vegetable crop and considered varietal diversity of this species. The biological characteristics of lagenaria cultivation as vegetable plants, including peculiarities of the reproductive system have been marked. We have also considered the issues of cultivation and distribution of long gourd lagenaria (zycca for food

  18. Atmospheric physics: Chorus keeps the diffuse aurora humming

    Science.gov (United States)

    Newell, Patrick T.

    2010-10-01

    The origin of the diffuse aurora, whose beauty and intensity pale beside those of the famous aurora borealis, has remained controversial. A convincing explanation for this auroral display is now at hand. See Letter p.943

  19. Excitation of Whistler-Mode (Chorus) Emissions during Terrestrial Substorms

    Institute of Scientific and Technical Information of China (English)

    XIAO Fu-Liang; ZHAO Hua; HE Hui-Yong

    2005-01-01

    @@ The enhanced growth rate of whistler mode waves has been evaluated during an injection event associated with an isolated terrestrial substorm that occurred at 23:00 UT, on January 21, 1991. The electron phase space density observed by an LEPA instrument on the board of the CRRES spacecraft is modelled by using a bi-loss-cone distribution function (composed of a high anisotropic component and a quasi-isotropic component). During the injection event, the path integrated gain may increase by a factor of 5 over a frequency range near a few tenths of the electron gyrofrequency, which is consistent with the enhancement observed in the CRRES plasma wave experiment (PWE) emissions. Scattering of electrons by the enhanced whistler mode waves causes the pitch angle distribution of resonant electrons to a quasi isotropic (flat-top) distribution during the terrestrial substorm injection event.

  20. Focal Chorus 826W特别版音箱

    Institute of Scientific and Technical Information of China (English)

    赵聪; 庄宏道(摄影)

    2012-01-01

    要说法国Focal音箱的代表作,无疑是新乌托邦系列。新乌托邦系列中的型号,无论是旗舰的Grande Utopia EM,还是稍小一号的Stella Utopia EM,都是同价位音箱中的佼佼者,

  1. Focal Chorus806V书架扬声器

    Institute of Scientific and Technical Information of China (English)

    阿闰

    2007-01-01

    法国扬声器生产商Focal最为人所称道的就是他的旗舰级Utopia系列,由上一代的Utopia到新世代的UtopiaBe,都是非常靓声而且表现全面。我作为上一代MezzoUtopia的长期用家,可以肯定的说,用了它,你根本没有办法在同等价位找到任何对手。Focal虽然精于制作真正Hi—End级别的扬声器,幸好她并没有忘记普罗大众发烧友,除了推出Utopia以下一级的中档Electra系列,还有入门级的Chorus系列,让知悭识俭的发烧朋友能够付出适合自己的价值,享受Focal富有活力的声音。

  2. Branch whorls of juvenile Araucaria araucana (Molina Koch: are they formed annually? Los verticilos de juveniles de Araucaria araucana (Molina Koch: ¿son formados anualmente?

    Directory of Open Access Journals (Sweden)

    CHRISTOPHER H. LUSK

    2000-09-01

    Full Text Available The growth of Araucaria araucana, like that of many other conifers, is characterised by the production of a monopodial stem with branch whorls. However, the periodicity of whorl formation in this species has not been subjected to systematic study. We used growth ring counts to determine the frequency of whorl formation in sun- and shade-grown juvenile A. araucana in a montane forest in the Chilean coast range. Whorls were not annual in any of the 35 individuals studied, growth rings outnumbering whorls by a factor of 1.8 to 3.9. The mean interval between successive whorls was significantly shorter in sun-grown (2.1 yrs whorl -1 than in shade-grown trees (2.6 yrs whorl-1, suggesting a relationship with plant carbon balance. Mean distance between whorls was also sensitive to light environment. The overall result of this effect of light environment on both whorl spacing and production rate was that mean height growth rates were > 50% higher in sun-grown trees (169 mm yr-1 than in shade-grown individuals (111 mm yr-1. Despite the non-annual nature of whorls in the study population, whorl counts may have some potential as a non-invasive method of age estimation in juvenile A. araucana. In both shade- and sun-grown subpopulations, whorl number was a better predictor of stem age than were stem diameter or heightEl crecimiento de A. araucana, al igual que el de muchas otras coníferas, se caracteriza por la producción de un fuste monopódico y ramas en verticilos. Sin embargo, en esta especie, no se ha investigado sistemáticamente la periodicidad de la formación de los verticilos. Esta nota documenta el conteo de anillos de crecimiento para determinar la frecuencia de formación de verticilos, en árboles juveniles de A. araucana. Se muestrearon 17 árboles en ambientes soleados y otros 18 bajo sombra, en un bosque montano de la Cordillera de la Costa, Chile. Ninguno de los 35 individuos estudiados mostró evidencias de formación anual de verticilos, puesto que el número de anillos de crecimiento excedió al número de verticilos en 1,8 a 3,9 veces. El intervalo promedio entre la producción de verticilos sucesivos fue significativamente menor en individuos expuestos a pleno sol (2,1 años verticilo-1 que en aquellos que crecieron bajo sombra (2,6 años verticilo-1, sugiriendo cierta relación con el balance de carbono de la planta. La distancia promedio entre verticilos también se mostró sensible al ambiente lumínico. El resultado de este efecto del ambiente lumínico sobre tanto la tasa de producción de verticilos, como la distancia entre éstos, fue que la tasa promedio de crecimiento en altura de los individuos soleados (169 mm año-1 excedió en > 50% a la de los individuos sombreados (111 mm año-1. A pesar de la naturaleza no anual de los verticilos en la población estudiada, los recuentos de verticilos pueden tener potencial como un método no invasivo de estimación de edad para juveniles de A. araucana. Tanto dentro de las subpoblaciones soleadas como sombreadas, el número de verticilos fue mejor indicador de la edad que el diámetro o la altura del fuste

  3. [Parasite nematodes from Dusycion griseus (Gray, 1837), D. culpaeus (Molina, 1782) and Conepatus chinga (Molina, 1782) (Mammalia:Carnivora) in Neuquén, Argentina. Systematics and ecology].

    Science.gov (United States)

    Stein, M; Suriano, D M; Novaro, A J

    1994-01-01

    Four nematode species (Physaloptera clausa Rudolphi, 1819; Ph. maxillaris Molin, 1860; Protospirura numidica criceticola Quentin, Karimi and Rodrigues De Almeida, 1968; Toxascaris leonina (Von Linstow, 1902) were collected from D. griseus, D. culpaeus and C. chinga in Neuquen Province, Argentina. These hosts were captured from April to August in 1990 and 1991. Ph. clausa and Ph. maxillaris ar redescribed. The systematic position of Ph. clausa is discussed and the authors conclude that this species could be considered the type species of the genus. The possibility that D. griseus and D. culpaeus could be the accidental hosts for P. n. criceticola is discussed. Prevalence, mean intensity and frequency of each species are given. These parameters were related with the diets of the hosts and the parasite life cycles. There was no relationship between parasitic burden of each host and their nutritional condition (Kendall Tau Test). Significant differences exist among the diet of each host and among prevalence values of each parasite species (Homogeneity Test SYSTAT Program).

  4. Tirso de Molina's comedy «Las Quinas de Portugal» and Salazar's censorship

    Directory of Open Access Journals (Sweden)

    António Apolinário Lourenço

    2015-11-01

    Full Text Available In March 1968, Portuguese censors stopped the broadcast on public television —which was the only television network at the time— of Tirso de Molina’s comedy Las quinas de Portugal. This play stages the most important creation myth for the Portuguese nation: on the eve of the battle of Ourique, a crucified Christ appeared and offered Count Afonso Henriques his five holy wounds as a symbol for the Portuguese coat of arms. In this article, I intend to understand the ethical and political reasoning of the censors who read this play, written by one of the most important playwrights of the Spanish Golden Age

  5. LAS CIENCIAS SOCIALES EN LA UCT EN 1971, POR VÍCTOR RAVIOLA MOLINA

    Directory of Open Access Journals (Sweden)

    Victor Raviola Molina

    2013-07-01

    Full Text Available Hasta el golpe de Estado, nuestro país se perfilaba como una «cosmópolis intelectual», exhibiendo condiciones como estabilidad política, modernización del sistema educacional universitario y gestión de redes internacionales tejidas desde algunas universidades. Esto propicia el florecimiento de centros académicos de investigación y formación, constituyendo un polo para intelectuales latinoamericanos, europeos y americanos que se insertan en estas instituciones con el objetivo de fortalecer dichas iniciativas, y analizar los procesos sociopolíticos que estaban teniendo lugar. En este contexto, y aun cuando en una condición periférica que implica sobre todo precariedad de recursos, las instituciones regionales buscaron afianzar su posición, se pensaron no sólo como instancias formativas, sino también de investigación, contribuyendo a través de la ciencia al desarrollo en el plano local.En la década de los setenta, la sede regional de la Pontificia Universidad Católica de Chile, hoy Universidad Católica de Temuco, abría un panorama auspicioso para el desarrollo de las ciencias sociales. Desde el Centro de Estudios de la Realidad Regional (CERER, y con el propósito de formar investigadores locales, se da apertura en 1971 a un programa de especialización denominado «Carrera de Investigadores en Ciencias Sociales», el que fue antesala de la fundación de la carrera de Licenciatura en Antropología en 1973, la tercera en el país y la segunda regional.Consideramos relevante este discurso pronunciado por el entonces director de Sede, don Víctor Raviola, en la inauguración anual de actividades académicas, en tanto deja testimonio de un estilo de universidad, a saber: regionalista, comprometida con la investigación científica aplicada, y vinculada con el medio local. Las palabras del profesor Raviola resultan señeras respecto del desarrollo de las ciencias sociales a nivel regional, proyecto que decae paulatinamente a partir de 1973 y que concluye con el cierre de la carrera de Antropología en 1978. En 1970 se da inicio a un proyecto que quedará inconcluso y que sólo volverá a cobrar fuerza en la década de los noventa con la apertura de las carreras de Antropología y Trabajo Social y la posterior creación de la Facultad de Ciencias Sociales en el primer decenio del siglo XXI.Agradecemos a Gloria Vergara Segura la transcripción de este texto (Héctor Mora Nawrath.

  6. Recuerdo e imaginación en Beltenebros de Antonio Muñoz Molina

    DEFF Research Database (Denmark)

    Hansen, Hans Lauge

    2004-01-01

    Nueva narrativa, novela, sujeto, búsqueda de identidad, den nye spanske roman, subjekt, identitet......Nueva narrativa, novela, sujeto, búsqueda de identidad, den nye spanske roman, subjekt, identitet...

  7. Mi Confesión. Revelaciones de un criminal de guerra (Mauricio Aranguren Molina

    Directory of Open Access Journals (Sweden)

    Herminia Gonzálvez Torralbo

    2007-01-01

    Full Text Available Hablar de un libro como el que paso a reseñar, implica comentar en un primer momento, qué es aquello que entendemos por confesión. Señalo esto porque cuando vemos la carátula del libro y leemos su título, el lector puede pensar que el protagonista del mismo revela voluntariamente acontecimientos de su propia vida, pero no sólo eso sino que además el lector puede pensar también que ésto s acontecimientos son relatados con el ánimo, no sólo de la revelación de una verdad, la verdad de Carlos Castaño, sino también con la intención de buscar una reconciliación (no sabría muy bien con quién pues son muchos los que han sufrido su falta de piedad por todos los crímenes cometidos. Es cierto, que cualquier tipo de confesión de un paramilitar que busque el perdón nunca se sostendrá,pero una confesión de un paramilitar es algo que llama la atención, sea esta del calibre que sea y sea cual sea el motivo de la misma.

  8. Morfología del aparato reproductor del picoroco Austromegabalanus psittacus (Molina, 1782 (Cirripedia, Balanidae

    Directory of Open Access Journals (Sweden)

    Catalina Contreras

    2015-07-01

    Full Text Available Descripción morfológica de las estructuras reproductivas de Austromegabalanus psittacus en dos periodos de maduración sexual. Se determinó que es un organismo hermafrodita que transfiere sus espermatozoides mediante un órgano intromitente o pene. El aparato reproductor masculino consta de testículos organizados en acinos que se distribuyen arboriformemente, dos conductos deferentes que se unen en la base del pene para formar el conducto eyaculador. El aparato reproductor femenino consiste principalmente en un ovario sacular que rodea al resto del cuerpo y se encuentra adherido a través de musculatura a la base de las placas operculares. Se organiza internamente en sacos acinares elongados que contienen ovogonias y ovocitos previtelogénicos adheridos a su pared y vitelogénicos y maduros libres dentro del lumen. Se observaron diferencias notorias en los ovarios entre los organismos recolectados en septiembre y octubre. En septiembre presentaron coloración amarillenta y en su interior se encontraron dos estructuras compactas denominadas lamelas ovígeras en cuyo interior se observaron ovocitos fecundados, embriones en diferentes estados de desarrollo y nauplius libres en la cavidad corporal; en octubre los ovarios son gruesos, blanquecinos y con gran cantidad de fluido lechoso en su interior.

  9. Morfología del aparato reproductor del picoroco Austromegabalanus psittacus (Molina, 1782) (Cirripedia, Balanidae)

    OpenAIRE

    Catalina Contreras; Nicolás Luna; Enrique Dupré

    2015-01-01

    Descripción morfológica de las estructuras reproductivas de Austromegabalanus psittacus en dos periodos de maduración sexual. Se determinó que es un organismo hermafrodita que transfiere sus espermatozoides mediante un órgano intromitente o pene. El aparato reproductor masculino consta de testículos organizados en acinos que se distribuyen arboriformemente, dos conductos deferentes que se unen en la base del pene para formar el conducto eyaculador. El aparato reproductor femenino consiste pri...

  10. Fibrinolytic activity of kaempferol isolated from the fruits of Lagenaria siceraria (Molina) Standley.

    Science.gov (United States)

    Rajput, M S; Mathur, Vineet; Agrawal, Purti; Chandrawanshi, H K; Pilaniya, Urmila

    2011-11-01

    This study was undertaken to isolate a flavonol, kaempferol, from the fruits of Lagenaria siceraria (bottle gourd) as a sole compound and to explore the fibrinolytic potential of the methanolic extract of the fruits of L. siceraria and the isolated compound using their in vitro activity. The fibrinolytic activity in terms of percentage of plasma clot liquefaction was determined by plasma clot lysis at 37°C in 24 h. The fibrinolytic activity of both substances was compared to the well-known thrombolytic agent streptokinase (30,000 IU). The percentage of fibrinolytic activity of the extract and isolated compound were found to be 54.72 ± 0.7210 and 77.37 ± 1.3010, respectively. Streptokinase was considered as the standard fibrinolytic enzyme for comparative purposes and had 91.46 ± 0.7625% fibrinolytic activity. The conclusion drawn in our study after testing the hypothesis by experimental procedures is that in vitro fibrinolytic activity on plasma clots is an inherent property of kaempferol isolated from the fruits of L. siceraria, and its comparison with streptokinase is a new aspect for further study.

  11. HEPATOPROTECTIVE ACTIVITY OF LAGENARIA SICERARIA (MOLINA STANDLEY FRUITS AGAINST PARACETAMOL INDUCED HAPATOTOXICITY IN MICE

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    C.V. Panchal*, Jyotiram A. Sawale , B. N. Poul and K.R. Khandelwal

    2013-01-01

    Full Text Available Aim and Objectives: Fruit juice of Lagenaria siceraria (LS belonging to Cucurbitaceae family, has been used traditionally to treat jaundice and to cure certain liver disorders. Antioxidants are well known for their hepatoprotective effect and in curing liver disorders. In this study, hepatoprotective and antioxidant effects of fruits were investigated. Materials and Methods: The coarsely powdered plant material was extracted successively with petroleum ether (PE and ethanol (ETH using soxhlet. PE & ETH, were then evaluated for their hepatoprotective and antioxidant activities against paracetamol induced hepatotoxicity and different in vitro assays respectively. Hepatoprotective activity was evaluated at three oral dose levels of 250, 500 and 1000 mg/kg. Results: Both extracts, PE and ETH exhibited a significant hepatoprotective and antioxidant activity. The ETH (1000 mg/kg showed maximum hepato-protection. ETH also showed better antioxidant activity, in comparison to PE, in all the antioxidant assays. Conclusions: ETH has shown better hepatoprotective activity than PE, which could be due to its better antioxidant activity. Moreover, better activity can also be attributed to the presence of phenolic compounds as these were absent in the PE.

  12. NETSUKE AS A RESOURCE OF INFORMATION ABOUT SPECIES DIVERSITY OF LAGENARIA SICERARIA (MOLINA STANDL

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    Tsatsenko L. V.

    2014-02-01

    Full Text Available In the article, with a descriptive method and a method of analysis and synthesis, we have conducted a study of species diversity of Lagenaria on the basis of a miniature sculpture of netsuke. In Japan and China, in the period from the 17th to the 20th century, the most common was 9 species. The biological peculiarities of some rare species of lagenaria has been described

  13. Organisation of autonomic nervous structures in the small intestine of chinchilla (Chinchilla laniger, Molina).

    Science.gov (United States)

    Nowak, E

    2014-08-01

    Using histochemical, histological and immunocytochemical methods, organisation of the autonomic nerve structures in small intestine of chinchilla was investigated. Myenteric plexus was localised between circular and longitudinal layers of the smooth muscles. Forming network nodes, the small autonomic, cholinergic ganglia were linked with the bundles of nerve fibres. Adrenergic structures were visible as specific varicose, rosary-like fibres forming bundles of parallel fibres connecting network nodes. Structures of the submucosal plexus formed a finer network than those of the myenteric plexus. Moreover, in 'whole-mount' specimens, fibres forming thick perivascular plexuses were also observed. Immunocytochemical studies confirmed the cholinergic and adrenergic character of the investigated structures. VAChT-positive neurones were found only in myenteric plexus, and numerous VAChT-positive and DBH-positive fibres were found in both plexuses.

  14. Call intercalation in dyadic interactions in natural choruses of Johnstone's whistling frog Eleutherodactylus johnstonei (Anura: Eleutherodactylidae).

    Science.gov (United States)

    Tárano, Zaida; Carballo, Luisana

    2016-05-01

    Communal signaling increases the likelihood of acoustic interference and impairs mate choice; consequently, mechanisms of interference avoidance are expected. Adjustment of the timing of the calls between signalers, specifically call alternation, is probably the most efficient strategy. For this reason, in the present study we analyzed call timing in dyads of males of E. johnstonei in six natural assemblages. We addressed whether males entrain their calls with those of other males at the assemblage and if they show selective attention in relation to perceived amplitude of the other males' calls, inter-male distance, or intrinsic call features (call duration, period or dominant frequency). We expected males to selectively attend to closer or louder males and/or to those of higher or similar attractiveness for females than themselves, because those would be their strongest competitors. We found that most males intercalated their calls with those of at least one male. In assemblages of 3 individuals, males seemed to attend to a fixed number of males regardless of their characteristics. In assemblages of more than 3 individuals, the perceived amplitude of the call of the neighboring male was higher, and the call periods of the males were more similar in alternating dyads than in the non-alternating ones. At the proximate level, selective attention based on perceived amplitude may relate to behavioral hearing thresholds. Selective attention based on the similarity of call periods may relate to the properties of the call oscillators controlling calling rhythms. At the ultimate level, selective attention may be related to the likelihood of acoustic competition for females.

  15. Quantifying the spatiotemporal dynamics in a chorus frog (Pseudacris) hybrid zone over 30 years.

    Science.gov (United States)

    Engebretsen, Kristin N; Barrow, Lisa N; Rittmeyer, Eric N; Brown, Jeremy M; Moriarty Lemmon, Emily

    2016-07-01

    Although theory suggests that hybrid zones can move or change structure over time, studies supported by direct empirical evidence for these changes are relatively limited. We present a spatiotemporal genetic study of a hybrid zone between Pseudacris nigrita and P. fouquettei across the Pearl River between Louisiana and Mississippi. This hybrid zone was initially characterized in 1980 as a narrow and steep "tension zone," in which hybrid populations were inferior to parentals and were maintained through a balance between selection and dispersal. We reanalyzed historical tissue samples and compared them to samples of recently collected individuals using microsatellites. Clinal analyses indicate that the cline has not shifted in roughly 30 years but has widened significantly. Anthropogenic and natural changes may have affected selective pressure or dispersal, and our results suggest that the zone may no longer best be described as a tension zone. To the best of our knowledge, this study provides the first evidence of significant widening of a hybrid cline but stasis of its center. Continued empirical study of dynamic hybrid zones will provide insight into the forces shaping their structure and the evolutionary potential they possess for the elimination or generation of species.

  16. Accumulation of pesticides in Pacific chorus frogs (Pseudacris regilla) from California's Sierra Nevada Mountains, USA.

    Science.gov (United States)

    Smalling, Kelly L; Fellers, Gary M; Kleeman, Patrick M; Kuivila, Kathryn M

    2013-09-01

    Pesticides are receiving increasing attention as potential causes of amphibian declines, acting singly or in combination with other stressors, but limited information is available on the accumulation of current-use pesticides in tissue. The authors examined potential exposure and accumulation of currently used pesticides in pond-breeding frogs (Pseudacris regilla) collected from 7 high elevations sites in northern California. All sites sampled are located downwind of California's highly agricultural Central Valley and receive inputs of pesticides through precipitation and/or dry deposition. Whole frog tissue, water, and sediment were analyzed for more than 90 current-use pesticides and pesticide degradates using gas chromatography-mass spectrometry. Two fungicides, pyraclostrobin and tebuconazole, and one herbicide, simazine, were the most frequently detected pesticides in tissue samples. Median pesticide concentration ranged from 13 µg/kg to 235 µg/kg wet weight. Tebuconazole and pyraclostrobin were the only 2 compounds observed frequently in frog tissue and sediment. Significant spatial differences in tissue concentration were observed, which corresponded to pesticide use in the upwind counties. Data generated indicated that amphibians residing in remote locations are exposed to and capable of accumulating current-use pesticides. A comparison of P. regilla tissue concentrations with water and sediment data indicated that the frogs are accumulating pesticides and are potentially a more reliable indicator of exposure to this group of pesticides than either water or sediment.

  17. Notes on a Visit to Nagasaki by Beijing Yuying Beiman Alumni Specialists Chorus

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    <正>At the invitation of the Nagasaki Municipal Government, the Nagasaki International Tourism and Convention Association and the Executive Committee of Madame Butterfly International Concours in Nagasaki

  18. Accumulation of pesticides in pacific chorus frogs (Pseudacris regilla) from California's Sierra Nevada Mountains, USA

    Science.gov (United States)

    Smalling, Kelly L.; Fellers, Gary M.; Kleeman, Patrick M.; Kuivila, Kathryn

    2013-01-01

    Pesticides are receiving increasing attention as potential causes of amphibian declines, acting singly or in combination with other stressors, but limited information is available on the accumulation of current-use pesticides in tissue. The authors examined potential exposure and accumulation of currently used pesticides in pond-breeding frogs (Pseudacris regilla) collected from 7 high elevations sites in northern California. All sites sampled are located downwind of California's highly agricultural Central Valley and receive inputs of pesticides through precipitation and/or dry deposition. Whole frog tissue, water, and sediment were analyzed for more than 90 current-use pesticides and pesticide degradates using gas chromatography–mass spectrometry. Two fungicides, pyraclostrobin and tebuconazole, and one herbicide, simazine, were the most frequently detected pesticides in tissue samples. Median pesticide concentration ranged from 13 µg/kg to 235 µg/kg wet weight. Tebuconazole and pyraclostrobin were the only 2 compounds observed frequently in frog tissue and sediment. Significant spatial differences in tissue concentration were observed, which corresponded to pesticide use in the upwind counties. Data generated indicated that amphibians residing in remote locations are exposed to and capable of accumulating current-use pesticides. A comparison of P. regilla tissue concentrations with water and sediment data indicated that the frogs are accumulating pesticides and are potentially a more reliable indicator of exposure to this group of pesticides than either water or sediment.

  19. Saxitoxins and okadaic acid group: accumulation and distribution in invertebrate marine vectors from Southern Chile.

    Science.gov (United States)

    García, Carlos; Pérez, Francisco; Contreras, Cristóbal; Figueroa, Diego; Barriga, Andrés; López-Rivera, Américo; Araneda, Oscar F; Contreras, Héctor R

    2015-01-01

    Harmful algae blooms (HABs) are the main source of marine toxins in the aquatic environment surrounding the austral fjords in Chile. Huichas Island (Aysén) has an history of HABs spanning more than 30 years, but there is limited investigation of the bioaccumulation of marine toxins in the bivalves and gastropods from the Region of Aysén. In this study, bivalves (Mytilus chilenses, Choromytilus chorus, Aulacomya ater, Gari solida, Tagelus dombeii and Venus antiqua) and carnivorous gastropods (Argobuccinum ranelliformes and Concholepas concholepas) were collected from 28 sites. Researchers analysed the accumulation of STX-group toxins using a LC with a derivatisation post column (LC-PCOX), while lipophilic toxins (OA-group, azapiracids, pectenotoxins and yessotoxins) were analysed using LC-MS/MS with electrospray ionisation (+/-) in visceral (hepatopancreas) and non-visceral tissues (mantle, adductor muscle, gills and foot). Levels of STX-group and OA-group toxins varied among individuals from the same site. Among all tissue samples, the highest concentrations of STX-group toxins were noted in the hepatopancreas in V. antiqua (95 ± 0.1 μg STX-eq 100 g(-1)), T. dombeii (148 ± 1.4 μg STX-eq 100 g(-1)) and G. solida (3232 ± 5.2 μg STX-eq 100 g(-1); p mantle > adductor muscle for the STX-group toxins and foot > digestive gland for the OA-group toxins. These results gave a better understanding of the variability and compartmentalisation of STX-group and OA-group toxins in different bivalve and gastropod species from the south of Chile, and the analyses determined that tissues could play an important role in the biotransformation of STX-group toxins and the retention of OA-group toxins.

  20. Respuestas foliares de Aristotelia chilensis (Molina Stuntz (Elaeocarpaceae a la fragmentación del bosque maulino Leaf responses of Aristotelia chilensis (Molina Stuntz (Elaeocarpaceae to the fragmentation of the Maulino forest

    Directory of Open Access Journals (Sweden)

    FIORELLA REPETTO-GIAVELLI

    2007-12-01

    Full Text Available La fragmentación que ha sufrido el bosque nativo de Chile debido a la fuerte presión antrópica ha causado, además de la grave pérdida de habitat, la modificación del microclima de los parches de bosque remanente que alguna vez constituyeron un bosque continuo de especies nativas. Estos cambios generarían respuestas morfológicas, químicas y fisiológicas en plantas capaces de adaptarse a las nuevas condiciones. Este estudio tiene como objetivo identificar respuestas a nivel de las hojas ante el aumento de radiación solar y disminución de agua en el suelo que ocurre al interior de los fragmentos. Para esto utilizamos a Aristotelia chilensis, especie que crece tanto en fragmentos como en bosque continuo, y comparamos parámetros relacionados a su morfología foliar en bosque y fragmentos y medimos su repercusión en la capacidad fotosintética de A. chilensis. En términos morfológicos, se observó una disminución del área foliar y del área foliar específica en los fragmentos, siendo 1,2 veces menor que en el bosque continuo. En los fragmentos, el grosor de la epidermis y del parénquima esponjoso son más de 1,3 veces mas gruesos que en el bosque continuo. El grosor del parénquima en empalizada, en cambio, no se vio modificado. La cantidad de nitrógeno en las hojas es 1,2 veces mayor en el bosque continuo que en los fragmentos, mientras que el contenido de carbono no varía. La conductancia estomática en el bosque continuo fue 1,5 veces mayor que en los fragmentos. Aristotelia chilensis responde morfológica y fisiológicamente ante los cambios abióticos generados por la fragmentación de los bosques, lo que le permite sobrevivir tanto en ambientes de baja luminosidad como el bosque continuo y en ambientes de alta luminosidad y bajo contenido hídrico como los fragmentos de bosque, manteniendo tasas fotosintéticas semejantes en ambos ambientesFragmentation of the Maulino forest implies significant habitat loss, as well as the modification of the microclimatic conditions of the remaining forest patches. Fragments are drier, hotter and receive more light than the continuous forest. These changes might induce morphological, chemical and physiological responses on individuals inhabiting forest patches. This study aims to identify morpho and physiological changes in Aristotelia chilensis, an evergreen tree that grows both in forest fragments and continuous forest. Leaves were 1.2 times smaller in forest fragments than in the continuous forest. Similar reduction was observed on specific leaf area (SLA. In forest fragments, the thickness of epidermis and of the spongy mesophyll was more than 1.3 times larger than that on the continuous forest, whereas the thickness of the palisade mesophyll did not differ. The amount of foliar nitrogen was 1.2 times larger in the continuous forest than in fragments, whereas the carbon content did not differ. Stomatal conductance in the continuous forest was 1.5 fold higher than that in forest fragments. Changes depicted by A. chilensis allows it to survive in environments of low luminosity as the continuous forest, and in environments of low water content as the forest fragments, maintaining similar photosynthetic rates in both environments

  1. OSTEOMETRÍA DE VICUGNA VICUGNA MOLINA, 1782 EN EL PLEISTOCENO FINAL DE PATAGONIA MERIDIONAL CHILENA: IMPLICANCIAS PALEOECOLÓGICAS Y BIOGEOGRÁFICAS / Osteometry of Vicugna vicugna Molina, 1782 in the late Pleistocene of southern chilean Patagonia

    Directory of Open Access Journals (Sweden)

    Rafael Labarca Encina

    2009-12-01

    Full Text Available  Se presenta un análisis osteométrico uni y multivariado con los materiales fósiles -principalmente huesos cortos y falanges- de Vicugna sp. del yacimiento Cueva Lago Sofía 4 (13500 – 11000 AP, ubicado en la provincia de Última Esperanza (Región de Magallanes, Chile. Los resultados indican que los elementos analizados poseen un tamaño compatible con los registrados para Vicugna vicugna, no superando en ningún caso a los especímenes conocidos para Vicugna gracilis del Pleistoceno de la región Pampeana. Esto confirma la información morfológica y de ADN antiguo que indicaba la presencia de Vicugna vicugna en la Patagonia meridional chilena. Se discuten los resultados en términos taxonómicos, biogeográficos y paleoecológicos sugiriendo que la presencia de este taxón fuera de su rango actual de distribución se debió a las condiciones ambientales compartidas entre la Puna y Patagonia austral durante la transición Pleistoceno-Holoceno. La extinción de V. vicugna se habría debido al impacto de los cambios climáticos ocurridos al inicio del Holoceno producto de su dieta pastadora y etología no migratoria y territorial, a lo que se habría sumado una caza por parte de depredadores humanos y no humanos.Palabras clave: género Vicugna, osteometría, Pleistoceno, Patagonia AbstractThis contribution presents the results of single and multi-variable osteometric analyses performed on a sample of short bones and phalanxes assigned to Vicugna sp. from Lago Sofía Cave 4 site (13500 – 11000 BP, Región de Magallanes, Chile. The elements analyzed show a similar size to the reference collections for Vicugna vicugna, and do not exceed the metrics for the pampean pleistocenic specimens of Vicugna gracilis. This confirms the morphological and ancient DNA data that indicated the presence of vicuña in southern Chilean Patagonia. The taxonomic, biogeographic and palaeoecologic discussion of these results, suggests that the presence of this species outside its current distribution range was due to shared environmental conditions between the Puna and Patagonia during the Pleistocene-Holocene transition. The extinction of this form is, most likely, due to the impact of climatic change during the begining of the Holocene over its pasturing diet and its territorial and non migratory habits. It is added to this, a hunting pressure by human and non-human predators.Keywords: Vicugna genus, osteometry, Pleistocene, Patagonia 

  2. Variabilidad genética y estructura poblacional del tunicado Pyura chilensis Molina, 1782, en la costa de Chile Genetic variability and population structure in tunicate Pyura chilensis Molina, 1782, in the coast of Chile

    Directory of Open Access Journals (Sweden)

    MARCELA P ASTORGA

    2006-12-01

    Full Text Available El tunicado Pyura chilensis se ha considerado una especie de importancia ecológica, por concentrar una gran diversidad biológica en sus agregaciones y de importancia económica por ser un recurso de extracción por pescadores artesanales. Sin embargo, se han detectado cambios en la distribución y abundancia de sus poblaciones adjudicados a su sobreexplotación. Para llegar a establecer medidas de conservación de un recurso, es necesario entre otras cosas, conocer su variabilidad genética y su estructura poblacional, estimando los patrones y sus causas. Por lo tanto, en el presente trabajo se determinó el grado de variabilidad genética aloenzimática del piure P. chilensis y su estructura poblacional en base a tres localidades (Antofagasta, Talcahuano y Puerto Montt en la costa chilena. Los loci polimórficos obtenidos fueron Mdh-1 y Pgi-1. Los valores de Fst mostraron leve estructuración poblacional entre localidades (Fst 0,019 al igual que la prueba exacta de diferenciación genética (P = 0,031. Se observó diferenciación para la localidad de Puerto Montt en relación a las otras dos localidades en algunos de los dos loci. Los niveles de variabilidad observados en esta especie corresponden a lo esperados para otras ascidias. La estructuración genética poblacional puede ser explicada por una combinación de diferentes factores, entre los que destacan: (i el tiempo del periodo larval de 12 a 24 h, lo cual no facilitaría una amplia dispersión a lo largo de 2.500 km de costa y (ii las condiciones oceanográficas diferenciales entre localidades, junto a patrones de circulación cerrados que podrían llegar a restringir el flujo génico. Por último, proponemos que un conocimiento adecuado del grado de variabilidad, estructura y dinámica genética de las poblaciones son aspectos esenciales para tomar medidas de conservación de recursos explotados, tanto en ambientes abiertos como en áreas de manejoThe ascidian Pyura chilensis is an ecologically important species due to its aggregates, providing habitat for other species. In addition, it is an economically important species being commercially exploited along the coast of Chile. Here, changes in distribution and abundance have been observed during the last decade that have been linked to overfishing. Patterns of genetic variation and population structure are important to understand biodiversity, management and conservation of species. Thus, the main objective of this study was to determine the genetic variability and population structure of Pyura chilensis in three localities along the Chilean coast (Antofagasta, Talcahuano, Puerto Montt. The polymorphic loci obtained were: Mdh-1 and Gpi-1 for P. chilensis. The Fst values showed slight population structure (Fst = 0.019, and the genetic differentiation showed statistically significant values (P = 0.031. The Puerto Montt locality was significantly different from the other two sites in the pairwise comparison in some loci. The genetic differentiation among localities of P. chilensis could be explained by a combination of different causes: (i low larval dispersion capacity associated to the larval life time of this species (12 to 24 h, and (ii differences in oceanographic conditions between localities and a closed circulation pattern that restrict dispersion. We conclude that monitoring of genetic diversity levels are essential to establish conservation and management plans of exploited marine resources

  3. VizieR Online Data Catalog: UBVI CCD photometry of Carina region stars (Molina-Lera+, 2016)

    Science.gov (United States)

    Molina-Lera, J. A.; Baume, G.; Gamen, R.; Costa, E.; Carraro, G.

    2016-08-01

    Photometric parameters for 62730 stars in the carina region covering 6 stellar clusters (NGC 3752, Trumpler 18, NGC 3590, Hogg 10, 11 and 12) and the surrounding field. The photometry was secured in March 2006 and March 2009 with the Y4KCAM camera attached to the Cerro Tololo Inter American Observatory (CTIO, Chile) 1.0-m telescope. (1 data file).

  4. Morphological and allozyme variation in a collection of Lagenaria siceraria (Molina Standl. from Côte d'Ivoire

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    Koffi KK.

    2009-01-01

    Full Text Available This study describes the intraspecific variation of 30 edible-seed Lagenaria siceraria germplasm accessions from the University of Abobo-Adjamé. These accessions were collected from three (Centre, East and South geographical zones of Côte d’Ivoire. Selection based on seed size by the farmers has resulted in subdividing the species into two cultivars: large-seeded and smallseeded. The morphological diversity study of the collection included 18 accessions and 24 traits. The multivariate analysis of variance (MANOVA showed a significant difference between the two groups of cultivars. Principal component analysis on 13 traits pointed out variations among individuals, mainly on the basis of flower, fruit, and seed size. Dendrogram with UPGMA method allowed clustering of the cultivars. The genetic structure analysis among accessions using allozyme markers showed the following values: 18.95% for the proportion of polymorphic loci (P, 1.21 for the number of alleles (A and 0.053 for observed heterozygosity (Ho. The level of the within accessions genetic diversity (HS = 0.188 was higher than the genetic variation among accessions (DST = 0.082. The estimates of F-statistics indicated a low level of genetic differentiation between accessions (FST = 0.298. Such a value suggested that L. siceraria maintains about 30% of its genetic variation among accessions. Nei genetic distances between the two cultivars were also low (0.002, indicating that cultivars were genetically similar enough to belong to the same genetic group.

  5. ANALYSIS OF FRUIT POLYMORPHISM IN THE BOTTLE LAGENARIA SICERARIA (MOLINA STANDL. ON THE BASIS OF IMAGES OF ART WORKS

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    Tsatsenko L. V.

    2013-11-01

    Full Text Available The article considers the issues of international spread the fruits of bottled gourd. Analysis of polymorphism of lagenaria fruits have been made on the basis of images of the paintings and sculpture, marked characteristic features of each country. Issues of selection on the basis of the trait of fruit form have considered

  6. La mujer por fuerza, El condenado por desconfiado y El burlador de Sevilla, tres comedias atribuidas a Tirso de Molina

    OpenAIRE

    Rodríguez López-Vázquez,Alfredo

    2010-01-01

    Planteamos tres problemas de atribución de obras autoría dudosa en el teatro del Siglo de Oro: El condenado por desconfiado y La mujer por fuerza, editadas a nombre de Tirso en la problemática Segunda parte, y El burlador de Sevilla, editada a nombre de Tirso en el volumen de Doze comedias de Lope de Vega y otros autores (circa 1630). Aplicamos una metodología de análisis de metáforas y de léxico poco usual, y cotejamos con varias obras de los dos dramaturgos implicados en su atribución, Tirs...

  7. La mujer por fuerza, El condenado por desconfiado and El burlador de Sevilla, Three Comedies Attributed to Tirso de Molina

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    Alfredo Rodríguez López-Vázquez

    2010-03-01

    Full Text Available We expose three attribution problems in several cases of doubtful authorship in the theater of the Siglo de Oro: El condenado por desconfiado and La mujer por fuerza, both edited as Tirso’s works in the problematic Segunda parte and El burlador de Sevilla, edited under the name of Tirso in the volume Doze comedias de Lope de Vega y otros autores (about 1630. We have applied a methodology concerning the analysis of metaphors and inusual lexical items, and we have comparated it with several works by the two dramaturgians concerned by its attributions, Tirso and Claramonte, and also with several others, as reference group. We conclude that La mujer por fuerza is a work by Tirso, El burlador de Sevilla is a Claramonte’s work, and El condenado por desconfiado is also a work by Claramonte, perhaps with a collaboration from Mira de Amescua.

  8. Determination of the variability of both hydrophilic and lipophilic toxins in endemic wild bivalves and carnivorous gastropods from the southern part of Chile.

    Science.gov (United States)

    Zamorano, Ruben; Marín, Michelle; Cabrera, Fabiola; Figueroa, Diego; Contreras, Cristóbal; Barriga, Andrés; Lagos, Néstor; García, Carlos

    2013-01-01

    The aim of this study was to analyse and determine the composition of paralytic shellfish poisoning (PSP) toxins and lipophilic toxins in the Region of Aysén, Chile, in wild endemic mussels (Mytilus chilensis, Venus antiqua, Aulacomya ater, Choromytilus chorus, Tagelus dombeii and Gari solida) and in two endemic carnivorous molluscs species (Concholepas concholepas and Argobuccinum ranelliforme). PSP-toxin contents were determined by using HPLC with fluorescence detection, while lipophilic toxins were determined by using LC-MS/MS. Mean concentrations for the total of PSP toxins were in the range 55-2505 μg saxitoxin-equivalent/100 g. The two most contaminated samples for PSP toxicity were bivalve Gari solida and carnivorous Argobuccinum ranelliforme with 2505 ± 101 and 1850 ± 137 μg saxitoxin-equivalent/100 g, respectively (p < 0.05). The lipophilic toxins identified were okadaic acid, dinophysistoxin-1 (DTX-1), azaspiracid-1 (AZA-1), pectenotoxin-2 (PTX-2) and yessotoxins (YTX). All analysed molluscs contained lipophilic toxins at levels ranging from 56 ± 4.8 to 156.1 ± 8.2 μg of okadaic acid-equivalent/kg shellfish together with YTX at levels ranging from 1.0 ± 0.1 to 18 ± 0.9 μg of YTX-equivalent/kg shellfish and AZA at levels ranging from 3.6 ± 0.2 to 31 ± 2.1 μg of AZA-equivalent/kg shellfish. Furthermore, different bivalves and gastropods differ in their capacity of retention of lipophilic toxins, as shown by the determination of their respective lipophilic toxins levels. In all the evaluated species, the presence of lipophilic toxins associated with biotransformation in molluscs and carnivorous gastropods was not identified, in contrast to the identification of PSP toxins, where the profiles identified in the different species are directly related to biotransformation processes. Thus, this study provides evidence that the concentration of toxins in the food intake of the evaluated species (Bivalvia and Gastropoda class) determines the degree of

  9. In vitro activity on human gut bacteria of murta leaf extracts (Ugni molinae Turcz. ), a native plant from southern chile

    DEFF Research Database (Denmark)

    Shene, C.; Canquil, N.; Jorquera, M.

    2012-01-01

    Despite the fact that murta infusions have been used to treat gut/urinary infections by native Chileans for centuries, the mechanisms promoting such effects still remain unclear. As a first attempt to unravel these mechanisms, human fecal samples were incubated in a medium containing water extrac...

  10. Reassessment of morphology and historical distribution as factors in conservation efforts for the Endangered Patagonian Huemul Deer Hippocamelus bisulcus (Molina 1782

    Directory of Open Access Journals (Sweden)

    H.T. Force

    2012-11-01

    Full Text Available To assist with conservation of Endangered Patagonian Huemul Deer (Hippocamelus bisulcus, the Huemul Task Force (HTF reassessed information on appendicular morphology, paleobiogeography, and historical distribution as potential factors in recovery efforts. Traditional claims of being a mountain specialist of the Andes were refuted by empirical evidence showing huemul morphology to coincide with other cervids rather than the commonly implied homology to rock-climbing ungulates. It thus supports historical evidence of huemul in treeless habitat and reaching the Atlantic coast, which cannot be dismissed as past erroneous observations. Instead, pre- and post-Columbian anthropogenic impacts resulted in huemul displacement from productive sites and in survival mainly in remote and marginal refuge areas. The process of range contraction was facilitated by easy hunting of huemul, energetic incentives from seasonal fat cycles and huemul concentrations, the change from hunting-gathering to a mobile equestrian economy, and colonization with livestock. However, areas used presently by huemul, as supposed mountain specialists, are also used by wild and domestic ungulates that clearly are not considered mountain specialists, whereas the only other Hippocamelus successfully uses areas homologous to tree-less Patagonia. Rigid application of modern habitat usage to infer past habitat use and ignoring historic extra-Andean accounts is unwarranted; these conclusions reached by the HTF indicate new opportunities for recovery efforts by considering morphological and historical evidence. For instance, reintroductions to other portions of the landscape used formerly by huemul, which tend to be more productive sites than those currently occupied by many huemul groups, would present a promising avenue.

  11. Avaliação farmacognostica e da rotulagem das drogas vegetais boldo-do-chile (Peumus boldus Molina) e camomila (Matricaria recutita L.) comercializadas em Fortaleza, CE

    OpenAIRE

    F.P. SOARES; N.M. FREIRE; SOUZA, T. R. de

    2015-01-01

    RESUMO Boldo-do-chile (Peumus boldus) e camomila (Matricaria recutita) são plantas empregadas na fitoterapia principalmente para o tratamento de desordens hepáticas e intestinais, atuando também como anti-inflamatório e antiespasmódico, respectivamente. Por isso, o presente trabalho objetivou avaliar a qualidade farmacognostica dessas drogas vegetais comercializadas em Fortaleza (CE), além das informações de suas rotulagens. Quarenta e duas amostras de boldo, e quarenta e cinco amostras de ca...

  12. The physical, chemical and functional characterization of starches from Andean tubers: oca (Oxalis tuberosa Molina, olluco (Ullucus tuberosus Caldas and mashua (Tropaeolum tuberosum Ruiz & Pavón

    Directory of Open Access Journals (Sweden)

    Beatriz Valcárcel-Yamani

    2013-09-01

    Full Text Available The physical, chemical, and functional properties of starches isolated from the Andean tubers oca (Oxalis tuberosa M., olluco (Ullucus tuberosus C. and mashua (Tropaeolum tuberosum R. & P. were studied. The tubers were obtained from a local grocery. The morphology of the starch granules (size and shape was studied with scanning electron microscopy (SEM, which revealed ellipsoid, oval, conical, pear-shaped and prismatic forms: ellipsoids and oval granules with lengths up to 54.30 µm in oca; with lengths up to 32.09 µm for olluco starch granules; and with predominantly truncated spherical or oval forms and smaller dimensions (up to 16.29 um for mashua starch granules. Amylose contents were similar among the samples: 27.60% (oca, 26.49% (olluco and 27.44% (mashua. Olluco starch had less swelling power, forming opaque, less firm gels. All three starch gels showed the same stability on refrigeration and presented high syneresis under freezing temperatures, with a variation of 40.28 to 74.42% for olluco starch. The starches cooked easily, with high peak viscosity. The low gelatinization temperatures and high stability during cooling make these starches suitable feedstock for use in formulations that require milder processing temperatures and dispense freezing storage.

  13. Escherbothrium molinae n. gen. et n. sp. (Eucestoda: Tetraphyllidea: Triloculariidae) in Urotrygon chilensis (Chondrichthyes: Myliobatiformes: Urolophidae) from the Gulf of Nicoya, Costa Rica.

    Science.gov (United States)

    Berman, R; Brooks, D R

    1994-10-01

    Cestodes collected in spiral valves of the stingray Urotrygon chilensis from the Pacific coast of Costa Rica represent an undescribed species of Tetraphyllidea. By possessing more than 2 loculi as well as an apical sucker on each bothridium, the new species is diagnosably distinct from all other tetraphyllidean genera; therefore, a new genus is proposed for it. The new species also possesses globular structures irregularly arranged on the surface of the bothridia. We found similar structures on the bothridial faces of Trilocularia acanthiaevulgaris, possibly indicating phylogenetic relationships with the new species. This possibility is enhanced by the observation that the bothridia of T. acanthiaevulgaris comprise 2 loculi and an apical sucker, rather than 3 loculi.

  14. Avaliação farmacognostica e da rotulagem das drogas vegetais boldo-do-chile (Peumus boldus Molina e camomila (Matricaria recutita L. comercializadas em Fortaleza, CE

    Directory of Open Access Journals (Sweden)

    F.P. SOARES

    2015-09-01

    Full Text Available RESUMO Boldo-do-chile (Peumus boldus e camomila (Matricaria recutita são plantas empregadas na fitoterapia principalmente para o tratamento de desordens hepáticas e intestinais, atuando também como anti-inflamatório e antiespasmódico, respectivamente. Por isso, o presente trabalho objetivou avaliar a qualidade farmacognostica dessas drogas vegetais comercializadas em Fortaleza (CE, além das informações de suas rotulagens. Quarenta e duas amostras de boldo, e quarenta e cinco amostras de camomila, procedentes de farmácias, de lojas de produtos naturais e de bancas de raizeiros, foram analisadas quanto à autenticidade, à pureza e às informações contidas na rotulagem desses produtos conforme legislação vigente. Na verificação de impurezas, 35,7% das amostras de boldo e 57,7% das amostras de camomila excederam o teor máximo de matéria estranha; no teor de cinzas totais, 33,3% das amostras de boldo foram reprovadas; rotulagens das amostras de boldo (100% e de camomila (96,6% apresentaram erros ou ausência de informações. Os resultados das análises confirmam, portanto, a necessidade urgente de melhor fiscalização e intervenção na produção e venda dessas e de outras drogas vegetais para adequação às normas vigentes.

  15. El Código vital detrás de los espejos en “Con tal de no morir” de Vicente Molina Foix

    OpenAIRE

    Ramón-García, E. (Emilio)

    2013-01-01

    Con tal de no morir presenta doce mundos aparentemente inconexos llenos de ansiedades contemporáneas. Gracias a la numerología pitagórica, esta colección se muestra como el espejo de una serie de frustraciones y de intertextos culturales que se agrupan en triadas y que va más allá de lo aparente. Según la Gestalt, podríamos aceptar una lectura superficial, la tendencia de la experiencia perceptiva más común, pero al ahondar en los intertextos y en sus reagrupamientos descubrimos, siguiendo el...

  16. Indicadores de condición larvaria aplicados al camarón de río del norte Cryphiops caementarius (Molina, 1782, en condiciones de cultivo controlado Larval condition indicators applied to the northern river shrimp Cryphiops caementarius (Molina, 1782, under condition of controlled cultivation

    Directory of Open Access Journals (Sweden)

    María C Morales

    2012-09-01

    Full Text Available Se estudia el desarrollo larvario del camarón de río del norte de Chile, Cryphiops caementarius, desde el estado de zoea 1 hasta el primer juvenil, caracterizando y analizando criterios que verificaron la aplicación de indicadores de tipo morfológico y de comportamiento para la evaluación de la condición larvaria de la especie, en condiciones de cultivo. Las larvas, se mantuvieron en cultivo, en un tanque de 250 L con agua a 20 psu y temperatura de 25 ± 1°C, controlada con termostato y con un recambio del 100% diariamente. La alimentación consistió en microalgas (Nannochloris sp. e Isochrysis sp., rotíferos (Brachionus plicatilis, nauplios de Artemia franciscana y alimento formulado. Se utilizaron cinco indicadores de carácter morfológico y de comportamiento aplicados a las larvas de C. caementarius: llenado intestinal, estado de la glándula digestiva, desarrollo branquial, comportamiento natatorio y respuesta fototáctica. Estos indicadores, permitieron determinar el estado de condición y calidad de las larvas de C. caementarius, logrando un efectivo seguimiento y asociación de cada uno de ellos, con cada estado de desarrollo larvario, estandarizando características deseables en las larvas y evidenciando resultados verificables, que permitan establecer un adecuado plan de seguimiento del cultivo, optimizar los protocolos de manejo y de alimentación de las larvas. Además de cada indicador, fue posible desglosar una amplia gama de potenciales estudios a realizar, basados en las relaciones que la morfología y el comportamiento larvario mantienen con las capacidades fisiológicas de las larvas en desarrollo.The larval development of the Chilean northern river shrimp Cryphiops caementarius was studied, from the condition of zoea 1 up to the condition of juvenile stage, analyzing and characterizing diverse criteria that allowed checking the application of morphological and behavioral indicators for the evaluation of the larval quality of the species, under conditions of culture. The larvae, were cultured, in a tank of 250 L with water at 20 psu, at a constant temperature (25° ± 1°C, controlled with a thermostat and with 100% refill every day. The diet consisted of microalgae (Nannochloris sp. and Isochrysis sp., rotifers (Brachionus plicatilis, nauplii of Artemia franciscana and formulated food. Five indicators were used, considering morphologic and behavior aspects: intestinal fill, midgut gland condition, gill development, swimming behavior and phototactic response. The indicators selected in the present work, were feasible of being used for the determination of the condition and quality of the larvae of C. caementarius, being able to make an effective follow-up and association with every condition of larval development, standardize desirable characteristics in the larvae and demonstrate verifiable results, using a protocol for culture and food supply. Moreover, it was possible to identify an extensive range of potential studies, based on the relationships that the morphology and the larval behavior support with the physiological capacities of the larvae in development.

  17. Ontogenetic variation in light interception, self-shading and biomass distribution of seedlings of the conifer Araucaria araucana (Molina K. Koch Variación ontogenética en la intercepción lumínica, autosombramiento y distribución de biomasa en plántulas de la conífera Araucaria araucana (Molina K. Koch

    Directory of Open Access Journals (Sweden)

    CHRISTOPHER H LUSK

    2006-09-01

    Full Text Available One of the factors thought to contribute to ontogenetic declines in plant growth rates is diminishing light interception efficiency, as a result of the difficulties of avoiding self-shading among a growing number of leaves, and by stems. The effects of plant size on self-shading and light interception have rarely been quantified, however. We used a three-dimensional digitising system to construct virtual models of the architecture of Araucaria araucana seedlings 71 to 358 mm tall, and modelled their light interception in the forest understorey using the program YPLANT. We also analyzed seedling allometry, to determine the combined effects of biomass distribution and self-shading on total light interception. Average light interception efficiencies calculated for A. araucana (29 % were the lowest reported for rainforest tree seedlings, reflecting the limitations imposed by short leaves, lack of petioles and an inability to develop planar foliage geometry on branches. Total light interception was related to seedling leaf area by an exponent of 0.735, reflecting increasing self-shading as seedlings grew bigger. However, because leaf area was related to seedling mass by an exponent of 1.24, light interception scaled nearly isometrically (0.91 power with seedling mass. This resulted from taller plants having proportionally thinner stems, and a smaller fraction of their biomass in roots. Thus, an ontogenetic increase in self-shading in A. araucana is largely offset by allocation changes which increase leaf area ratio as seedlings grow bigger. These mechanisms conserving the relationship of light interception with plant mass seem likely to be restricted to species with long-lived leaves, growing in humid situations protected from wind stress. In open habitats, where wind and drought stress likely make such allocation patterns less feasible, the role of self-shading in ontogenetic declines in relative growth rate may be more evidentLa caída en la eficiencia de intercepción de la luz es considerada como uno de los factores responsables del declive ontogenético en las tasas de crecimiento relativo de las plantas, debido a la dificultad de evitar el autosombramiento entre un creciente número de hojas. Sin embargo, rara vez se ha cuantificado el efecto de tamaño de las plantas sobre el autosombramiento y la eficiencia en intercepción de la luz. Utilizamos un sistema de digitalización para construir modelos virtuales tridimensionales de la arquitectura de plántulas 71-358 mm de alto de la conífera Araucaria araucana, y modelamos su intercepción de la luz en el sotobosque mediante el programa YPLANT. Analizamos además la alometría de las plántulas para determinar los efectos combinados de la distribución de biomasa y el autosombramiento sobre la intercepción total de luz a nivel de la planta entera. La eficiencia promedio de intercepción de la luz de A. araucana (29 % fue la más baja documentada para plántulas de especies de bosques húmedos, reflejando las limitaciones impuestas por hojas cortas, carencia de pecíolos, y la incapacidad de desarrollar follaje plagiotrópico. La intercepción total de luz por las plántulas fue proporcional al área foliar0,735, producto de un aumento en el autosombramiento en función del tamaño. Sin embargo, debido a la relación del área foliar con la potencia 1,24 de la masa de las plántulas, la intercepción de luz se acercó a la proporcionalidad directa (exponente 0,91 con la masa. Este patrón fue producto de la relativa delgadez de los tallos de las plántulas grandes, y su baja proporción de biomasa radicular. Por tanto, el declive ontogenético en la eficiencia de intercepción de la luz fue en gran medida compensada por cambios de asignación que aumentaron la superficie foliar de las plántulas grandes. Estos mecanismos que conservaron la relación de la ganancia potencial de carbono con la masa de las plántulas probablemente serán vistos solamente en especies con hojas muy longevas, en hábitats húmedos con poco viento. En ambientes abiertos, donde los estrés por sequía y viento podrían seleccionar en contra tales patrones de asignación, es probable que se evidencie más claramente el rol del autosombramiento en los declives ontogenéticos en la tasa de crecimiento relativo

  18. Descripción histológica y caracterización de los estados de madurez gonadal de hembras de Cryphiops caementarius (Molina, 1782 (Decapoda: Palaemonidae Histological description and characterization of the ovarian cycle of Cryphiops caementarius (Molina, 1782 (Decapoda: Palaemonidae

    Directory of Open Access Journals (Sweden)

    Jorge E Moreno

    2012-09-01

    Full Text Available La extracción indiscriminada y alteraciones del medio natural, han puesto en peligro de extinción al único Palaemónido dulceacuícola de interés comercial, presente en aguas continentales chilenas. Aun cuando esta situación, ha despertado el interés en estudios que permitan su reproducción controlada en cautiverio, actualmente es escaso el conocimiento acerca de aspectos reproductivos básicos de esta especie. Dada su importancia, este trabajo describe y caracteriza el proceso completo de maduración gonadal en hembras de Cryphiops caementarius, en base a cambios en la morfología externa e interna del ovario. Hembras adultas extraídas del río Limarí, fueron disectadas y sus ovarios removidos y preparados para análisis histológicos. Tejido fibromuscular divide el tejido gonadal de cada lóbulo en sacos ováricos de forma semicónica (conos de maduración, al interior del los cuales se encuentran ovocitos en diferentes estados de desarrollo de acuerdo a observaciones microscópicas de tamano, morfología y tinción con H-E, las células reproductoras femeninas se clasificaron en seis tipos, ovogonias (Ov, ovocitos previtelogénicos tempranos (O1, ovocitos previtelogénicos tardíos (O2, ovocitos vitelogénicos tempranos (O3, ovocitos vitelogénicos tardíos (O4 y ovocitos Maduros (OM. El ciclo de madurez gonadal se dividió en cinco estados según la cantidad y tipo de ovocitos presentes. Los estados 0 y I, corresponden a desovado y previtelogénesis. Los estados II y III a vitelogénesis temprana y vitelogénesis intermedia, mientras el estado IV corresponde a madurez avanzada. La presencia de ovogonias y ovocitos previtelogénicos junto a ovocitos completamente maduros en el estado de madurez avanzada, refleja la capacidad de esta especie de realizar ciclos consecutivos de madurez en intervalos cortos de tiempo.Its indiscriminate extraction and alterations of its natural environment, has put in danger of extinction the only commercial freshwater Palemonid present in Chilean inland waters. Even though this situation has awakened interest in studies which allow its controlled reproduction in captivity, currently little is known regarding basic reproductive aspects of this species. Given its relevance, this work describes and characterizes the whole ovarian cycle of Cryphiops caementarius, based on changes in external and internal ovarian morphology. Adult C. caementarius females, obtained from Limarí River, were dissected and its ovaries removed and prepared for histological examinations. Fibromuscular tissue divides the ovarian tissue of each lobe into cone-shaped ovarian pouches (Maturation cones, each one containing various steps of oocytes according to the stages of ovarian development. Based on light microscopic observations of cells' sizes, morphology, and staining with H-E, the female germ cells could be classified into six different types, which include oogonia (Ov, early previtellogenic oocytes (O1, late previtellogenic oocytes (O2, early vitellogenic oocytes (O3, late vitellogenic oocytes (O4 and mature oocytes (OM. The ovarian cycle is divided into five stages based on the amount and types of oocytes present in each stage. Stage 0 and I are spawned and previtellogenesis stages. Stage II and III are early and intermediate vitellogenesis stages, while stage IV is maturity advanced stage. The presence of oogonia and previtellogenic oocytes among fully mature oocytes in stage IV reflect the capacity of the ovary of C. caementarius females to start a new full maturity cycle in a short time period.

  19. TITLE: La mujer por fuerza, El condenado por desconfiado and El burlador de Sevilla, Three Comedies Attributed to Tirso de Molina. TÍTULO: La mujer por fuerza, El condenado por desconfiado y El burlador de Sevilla, tres comedias atribuidas a Tirso de Molina

    Directory of Open Access Journals (Sweden)

    Alfredo Rodríguez López-Vázquez

    2010-03-01

    Full Text Available ABSTRACT:We expose three attribution problems in several cases of doubtful authorship in the theater of the Siglo de Oro: "El condenado por desconfiado" and "La mujer por fuerza", both edited as Tirso’s works in the problematic "Segunda parte" and "El burlador de Sevilla", edited under the name of Tirso in the volume "Doze comedias de Lope de Vega y otros autores" (about 1630. We have applied a methodology concerning the analysis of metaphors and inusual lexical items, and we have comparated it with several works by the two dramaturgians concerned by its attributions, Tirso and Claramonte, and also with several others, as reference group. We conclude that "La mujer por fuerza" is a work by Tirso, "El burlador de Sevilla" is a Claramonte’s work, and "El condenado por desconfiado" is also a work by Claramonte, perhaps with a collaboration from Mira de Amescua. RESUMEN: Planteamos tres problemas de atribución de obras autoría dudosa en el teatro del Siglo de Oro: "El condenado por desconfiado" y "La mujer por fuerza", editadas a nombre de Tirso en la problemática "Segunda parte", y "El burlador de Sevilla", editada a nombre de Tirso en el volumen de "Doze comedias de Lope de Vega y otros autores" (circa 1630. Aplicamos una metodología de análisis de metáforas y de léxico poco usual, y cotejamos con varias obras de los dos dramaturgos implicados en su atribución, Tirso y Claramonte, y varios autores más como grupo de referencia. Concluimos que "La mujer por fuerza" es obra de Tirso, "El burlador de Sevilla" es obra de Claramonte, y que "El condenado por desconfiado" es obra de Claramente, tal vez en colaboración con Mira de Amescua.

  20. Experimental illumination of a forest: no effects of lights of different colours on the onset of the dawn chorus in songbirds

    NARCIS (Netherlands)

    Da Silva, Arnaud; de Jong, Maaike; van Grunsven, Roy H. A.; Visser, Marcel E.; Kempenaers, Bart; Spoelstra, Kamiel

    2017-01-01

    Light pollution is increasing exponentially, but its impact on animal behaviour is still poorly understood. For songbirds, the most repeatable finding is that artificial night lighting leads to an earlier daily onset of dawn singing. Most of these studies are, however, correlational and cannot entir

  1. Experimental illumination of a forest: no effects of lights of different colours on the onset of the dawn chorus in songbirds

    NARCIS (Netherlands)

    Silva, Da Arnaud; Jong, de Maaike; Grunsven, van R.H.A.; Visser, M.E.; Kempenaers, Bart; Spoelstra, Kamiel

    2017-01-01

    Light pollution is increasing exponentially, but its impact on
    animal behaviour is still poorly understood. For songbirds, the
    most repeatable finding is that artificial night lighting leads to
    an earlier daily onset of dawn singing. Most of these studies are,
    however, correlational

  2. Experimental illumination of a forest: no effects of lights of different colours on the onset of the dawn chorus in songbirds

    Science.gov (United States)

    de Jong, Maaike; van Grunsven, Roy H. A.; Visser, Marcel E.; Kempenaers, Bart; Spoelstra, Kamiel

    2017-01-01

    Light pollution is increasing exponentially, but its impact on animal behaviour is still poorly understood. For songbirds, the most repeatable finding is that artificial night lighting leads to an earlier daily onset of dawn singing. Most of these studies are, however, correlational and cannot entirely dissociate effects of light pollution from other effects of urbanization. In addition, there are no studies in which the effects of different light colours on singing have been tested. Here, we investigated whether the timing of dawn singing in wild songbirds is influenced by artificial light using an experimental set-up with conventional street lights. We illuminated eight previously dark forest edges with white, green, red or no light, and recorded daily onset of dawn singing during the breeding season. Based on earlier work, we predicted that onset of singing would be earlier in the lighted treatments, with the strongest effects in the early-singing species. However, we found no significant effect of the experimental night lighting (of any colour) in the 14 species for which we obtained sufficient data. Confounding effects of urbanization in previous studies may explain these results, but we also suggest that the experimental night lighting may not have been strong enough to have an effect on singing. PMID:28280562

  3. Mark Bowden and Owen Sheers present "Creation" [working title]: a new musical and poetic collaborative project for chorus, soloists and orchestra

    CERN Multimedia

    2013-01-01

    "Creation" is a new collaboration between Mark Bowden, in his role as BBC National Orchestra of Wales’ Resident Composer, and the poet and novelist Owen Sheers.   Taking Haydn's 1798 work "The Creation" as a point of departure, they plan to create a new cantata for the digital age exploring the meaning of creation in the twenty-first century. Through engagement with developments in biology and physics they plan to create a new work incorporating poetry and music that will explore the latest ideas concerning the creation of matter and the emergence of life in the universe, whilst also delving into the human side of the brilliant minds that are currently working to uncover these secrets of the universe. More information is available here. Meet them at the CERN Library (bldg. 52 1-052) on Wednesday 2 October at 4 p.m. * Coffee will be served at 3.30 p.m.*

  4. 谈合唱教学在学校素质教育中的作用%Discussing the Function of the Chorus Teaching in School Anlage Education

    Institute of Scientific and Technical Information of China (English)

    钟小威

    2000-01-01

    合唱是一种群体歌唱的多声部艺术表现形式,合唱教学包括欣赏、演唱、表演三个环节,是学校音乐教育不可缺少的一项教学内容,是对学生进行思想教育、审美教育的有效途径。本文着重就合唱教学在学校素质教育中的作用进行简要的论述。

  5. Art as tragic overcoming. An approach to the philosophical problem of the origin of the tragic choir. Commentary on the paragraphs 7 and 8 of The birth of tragedy

    Directory of Open Access Journals (Sweden)

    Oscar Quejido Alonso

    2014-07-01

    Full Text Available From Nietzsche's statement that "the tragedy born of the tragic chorus, and was originally chorus and nothing but chorus" (GT, 7, we will try to show how, since the first Nietzschean conception of tragedy, this fundamental element of his thought can be characterized, beyond next differences, as an ever transient overcoming of nihilism. Thus, by analyzing the aphorisms 7 and 8 of The Birth of Tragedy, we will show how these elements appear through Nietzsche's interpretation of the tragic chorus

  6. Mahler: Sinfonie Nr. 8 Es-Dur (Sinfonie der Tausend) / Norbert Rüdell

    Index Scriptorium Estoniae

    Rüdell, Norbert

    1995-01-01

    Uuest heliplaadist "Mahler: Sinfonie Nr. 8 Es-Dur (Sinfonie der Tausend). Estonian Boys' Choir, Brunnsbo Children's Choir, Gothenburg Opera Chorus, Royal Stockholm Philharmonic Choir, Gothenburg Symphony Chorus, Gothenburg Opera Chorus, Gothenburg Symphony Orchestra, Neeme Järvi. BIS/Disco-Center CD 700 (WD:72'18")

  7. Líneas para desarrollar un saber del derecho penal internacional de contención. En Molina, R. (Coord.). Lecciones de Derecho penal, procedimiento penal y política criminal. (pp. 99-141).

    OpenAIRE

    Martínez, Javier Botero

    2014-01-01

    El autor, luego de aludir a la paternidad y di­ferencias entre las locuciones derecho penal internacional e internacional penal (Völkerstra­frecht o Internacionales Strafrecht), y de indi­car que empleará el nombre de derecho penal Internacional (Völkerstrafrecht) para denotar lo que algunos llaman derecho internacional penal (Völkerstrafrecht o Internacionales Stra­frecht) procede, no sin antes hacer una breve historia en el ámbito colombiano del mismo, a diferenciar las nociones de poder pu...

  8. La interacción. Planificación-gestión para el desarrollo urbano local en los distritos consolidados del area metropolitana / caso: distrito de la Molina y San Isidro

    OpenAIRE

    Chilet Cama, Shirley Emperatriz

    2010-01-01

    El fenómeno de la globalización en los mercados internacionales ha generado un efecto doble e inverso: primero, de concentración de fuerzas productivas en determinadas zonas geográficas y segundo, de des-localización de bloques productivos hacia distintas regiones del mundo. La integración económica y los acuerdos comerciales como parte de los nuevos arreglos institucionales entre países han coadyuvado a dicho fenómeno. Como respuesta a estos dos efectos y a una nueva tendencia hacia la m...

  9. Los maestros Gilaberte, en el entorno de Molina de Aragón (Guadalajara), y su relación con José Martín de Aldehuela

    OpenAIRE

    Camacho Martínez, Rosario

    2006-01-01

    En este trabajo se presenta la actividad de una dinastía de maestros arquitectos del norte de Castilla, especialmente Manuel Gilaberte, que fue discípulo y colaborador de José Martín de Aldehuela, colaboración que ha permitido la atribución a éste de algunas obras, ya aclarada la autoría por la investigación documental. This manuscript presents the activity of a northern castillian dinasty of master architects, in particular Manuel Gilaberte, pupil and co-worker of José Martín ...

  10. Nobel Prize in Chemistry 1995 "for their work in atmospheric chemistry, particularly concerning the formation and decomposition of ozone" : Paul J Crutzen, Mario J Molina and F Sherwood Rowland

    CERN Multimedia

    1997-01-01

    Prof. Paul J Crutzen presents "The stratospheric ozone hole : a man-caused chemical instability".The discovery of the spring time stratospheric ozone hole by scientists of the British Antarctic Survey, led by Joe Farman, was one of the greatest surprises in the history of the atmospheric sciences and global change studies. After intensive research efforts by many international scientific teams it has clearly been demonstrated that the observed rapid ozone depletions are due to catalytic reactions involving CIO radicals, more than 80571130f which are produced by the photochemical breakdown of the industrial chlorofluorocarbon (CFC) gases. In this lecture I will present the course of events leading to the rapid ozone depletions. International agreements have been reached to forbid the production of the CFC gases. However, despite these measures, it will take almost 50 years before the ozone hole will have disappeared. I will also show that mankind has indeed been very lucky and that things could have been far w...

  11. Toward the characteristics of the development of the seedlings and immature plants of Araucaria araucana (Molina K. Koch (Araucariaceae in its natural habitats (Neuquén Province, Argentina

    Directory of Open Access Journals (Sweden)

    N.L. Kazakova

    2014-04-01

    Full Text Available Araucaria forests were studied and their types were distinguished. Descriptive characteristics of defined forest types were established. Araucaria araucana regrowth rate and seed survival expressed as thousands per hectare were estimated in the natural habitats of araucaria. The anatomical features of needles of immature and generative plants were compared. A. araucana life cycle from the seedling to the immature developmental stage was described. Growth power classes of immature plants were defined according to the environmental conditions of A. araucana growth.

  12. La mujer por fuerza, El condenado por desconfiado and El burlador de Sevilla, Three Comedies Attributed to Tirso de Molina

    OpenAIRE

    Alfredo Rodríguez López-Vázquez

    2010-01-01

    We expose three attribution problems in several cases of doubtful authorship in the theater of the Siglo de Oro: El condenado por desconfiado and La mujer por fuerza, both edited as Tirso’s works in the problematic Segunda parte and El burlador de Sevilla, edited under the name of Tirso in the volume Doze comedias de Lope de Vega y otros autores (about 1630). We have applied a methodology concerning the analysis of metaphors and inusual lexical items, and we have comparated it with several wo...

  13. TITLE: La mujer por fuerza, El condenado por desconfiado and El burlador de Sevilla, Three Comedies Attributed to Tirso de Molina. TÍTULO: La mujer por fuerza, El condenado por desconfiado y El burlador de Sevilla, tres comedias atribuidas a Tirso de Molina

    OpenAIRE

    Alfredo Rodríguez López-Vázquez

    2010-01-01

    ABSTRACT:We expose three attribution problems in several cases of doubtful authorship in the theater of the Siglo de Oro: "El condenado por desconfiado" and "La mujer por fuerza", both edited as Tirso’s works in the problematic "Segunda parte" and "El burlador de Sevilla", edited under the name of Tirso in the volume "Doze comedias de Lope de Vega y otros autores" (about 1630). We have applied a methodology concerning the analysis of metaphors and inusual lexical items, and we have comparated...

  14. Honors

    Science.gov (United States)

    2013-08-01

    Mario Molina has been selected to receive the Presidential Medal of Freedom, the White House announced on 8 August. Molina, who was a recipient of the Nobel Prize in Chemistry in 1995 for discovering how chlorofluorocarbons deplete the ozone layer, is a professor at the University of California, San Diego; director of the Mario Molina Center for Energy and Environment in Mexico City, Mexico; and a member of the President's Council of Advisors on Science and Technology.

  15. Magic Harmony——the Chorus in the movie Les Choristes%美妙的和谐——影片《放牛班的春天》中的合唱

    Institute of Scientific and Technical Information of China (English)

    汤胜方

    2008-01-01

    是一部以合唱音乐为主题的电影.本文通过影片中合唱所体现的审美价值取向、情感体验与感悟、交往互动生命共享及持久性这三方面来分析此部经典之作.

  16. 嬉戏于大森林中--聆听张敦智合唱作品音乐会%Enjoying the Pleasure of Great Forests at Zhang Dunzhi's Chorus Concert

    Institute of Scientific and Technical Information of China (English)

    伦毅杰

    2002-01-01

    @@ 张敦智其人其乐,之于我们这些新生代几乎就是一片茫然.是诗人?还是作家?考古学者?作曲家?等等,他的音乐作品在乐坛上演出甚少,只听说他在20世纪60年代初就有合唱音诗问世.

  17. Study on High Energy Electron Flux Enhancement Events and Whistler Chorus Wave%哨声模合声波与地球同步轨道高能电子通量增强事件事例研究

    Institute of Scientific and Technical Information of China (English)

    何甜; 刘四清; 郑金磊; 龚建村

    2013-01-01

    局部加速机制是磁暴期间地球外辐射带高能电子通量增强事件发生的重要原因.此加速机制需要两个基本条件,一是存在种子电子,二是存在能与种子电子产生共振的加速波动,包括哨声模合声波.通过对2004-2006年Pil地磁脉动持续时间与种子电子通量的相关性分析,更明确提出Pil地磁脉动的持续时间可以作为种子电子通量的指示剂.通过对三个磁暴事例地球同步轨道的种子电子通量、高能电子通量及哨声模合声波变化情况的分析,发现在高能电子通量较强的事例中,均观测到较高的种子电子通量和较强的哨声模合声波,这在一定程度上验证了哨声模合声波对种子电子的回旋加速机制,且合声波强度与高能电子通量有正的相关性.

  18. The Inspiration of Vygotsky's "Zone of Proximal Development"Theory to Chorus Teaching%维果茨基"最近发展区"理论对合唱教学的启示

    Institute of Scientific and Technical Information of China (English)

    倪淑萍

    2005-01-01

    维果茨基"最近发展区"理论对合唱教学具有重要的指导意义.该理论提供了在合唱教学中确定学生"最近发展区"的方式方法,提供了在"最近发展区"实施最佳教学的策略,使学生实现良好的螺旋式发展,以提高合唱教学质量,最大程度地促进学生智力技能的发展.

  19. Planetary Asteroid Defense Study: Assessing and Responding to the Natural Space Debris Threat

    Science.gov (United States)

    1995-04-01

    1134-1135. 35 Ibid, 1134. 36 Ibid, 1134. 76 37 Kerry A. Emanuel, Kevin Speer, Richard Rotunno, Ramesh Srivastava and Mario Molina , Hyper canes: A...Speer, Richard Rotunno, Ramesh Srivastava and Mario Molina . Hypercanes: A Possible Link In Global Extinction Scenarios. Center for Meteorology and

  20. 78 FR 37520 - Order Denying Export Privileges

    Science.gov (United States)

    2013-06-21

    ... Bureau of Industry and Security Order Denying Export Privileges In the Matter of: Placido Molina, Jr... convicted of violating Section 38 of the Arms Export Control Act (22 U.S.C. 2778 (2006 & Supp. IV 2010)) (``AECA''). Specifically, Molina was convicted of knowingly and willfully attempting to export and...

  1. Health Issues in the Latino Community.

    Science.gov (United States)

    Aguirre-Molina, Marilyn, Ed.; Molina, Carlos W., Ed.; Zambrana, Ruth Enid, Ed.

    This collection of papers includes 6 parts. Part 1, "Latino Populations in the United States," includes: (1) "Latino Health Policy: Beyond Demographic Determinism" (Angelo Falcon, Marilyn Aguirre-Molina, and Carlos W. Molina); (2) "Latino Health Status" (Olivia Carter-Pokras and Ruth Enid Zambrana); and (3)…

  2. Detection and reconstruction of short-lived particles produced by neutrino interactions in emulsion

    NARCIS (Netherlands)

    Uiterwijk, Johannes Wilhelmus Edmond

    2007-01-01

    Several different topics related to the CHORUS experiment at CERN are presented. CHORUS has searched for neutrino oscillation between νμand ντwith mixing probability down to 2⋅10-4 and ∆ m-2 >0.5 eV2. Chapter 1 discusses the discovery of neutrino oscillations by several other experiments. Chapter 2

  3. Compte rendu de l’ouvrage de José Luis Gutiérrez Molina, Casas Viejas. Del crimen a la Esperanza. María Silva « Libertaria » y Miguel Pérez Cordón: dos vidas unidas por un ideal (1933-1939 Reseña del libro de José Luis Gutiérrez Molina, Casas Viejas. Del crimen a la Esperanza. María Silva « Libertaria » y Miguel Pérez Cordón: dos vidas unidas por un ideal (1933-1939

    Directory of Open Access Journals (Sweden)

    Gérard Brey

    2009-08-01

    Full Text Available Desde hace más o menos una década, determinados sectores de la opinión p��blica española se preocupan por «recuperar la memoria histórica» de la guerra civil española o, mejor dicho, la de las víctimas olvidadas del bando «vencido», mientras que los herederos del otro bando evocan de vez en cuando las víctimas del «comunismo». Se han ido constituyendo asociaciones en distintos puntos del país para localizar los restos de las víctimas de la represión franquista en los meses de la guerra, para d...

  4. Relativistic electron microbursts and variations in trapped MeV electron fluxes during the 8-9 October 2012 storm: SAMPEX and Van Allen Probes observations

    Science.gov (United States)

    Kurita, Satoshi; Miyoshi, Yoshizumi; Blake, J. Bernard; Reeves, Geoffery D.; Kletzing, Craig A.

    2016-04-01

    It has been suggested that whistler mode chorus is responsible for both acceleration of MeV electrons and relativistic electron microbursts through resonant wave-particle interactions. Relativistic electron microbursts have been considered as an important loss mechanism of radiation belt electrons. Here we report on the observations of relativistic electron microbursts and flux variations of trapped MeV electrons during the 8-9 October 2012 storm, using the SAMPEX and Van Allen Probes satellites. Observations by the satellites show that relativistic electron microbursts correlate well with the rapid enhancement of trapped MeV electron fluxes by chorus wave-particle interactions, indicating that acceleration by chorus is much more efficient than losses by microbursts during the storm. It is also revealed that the strong chorus wave activity without relativistic electron microbursts does not lead to significant flux variations of relativistic electrons. Thus, effective acceleration of relativistic electrons is caused by chorus that can cause relativistic electron microbursts.

  5. Plaadid / Margus Kiis

    Index Scriptorium Estoniae

    Kiis, Margus

    2004-01-01

    Uutest plaatidest Courtney Love "American Sweetheart", Haltya "Electric Help Elves", Beats and Styles "This Is... Beats and Styles", "Ennio Morricone Remixes vol. 2", Delta Goodrem "Innocent Eyes", Juana Molina "Segundo"

  6. Lisa maailmakirjanduse tõlkevaramule

    Index Scriptorium Estoniae

    2006-01-01

    Uued teosed sarjast "Maailmakirjanduse tõlkevaramu": Tirso de Molina "Sevilla pilkaja ja kivist külaline" ja Pedro Calderon de la Barca "Suur Maailmateater" (Tartu : Tartu Ülikooli Kirjastus, 2006)

  7. 75 FR 61573 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

    Science.gov (United States)

    2010-10-05

    ... blocked pursuant to the Order: 1. ALZATE SALAZAR, Luis Alfredo, c/o COINTERCOS S.A., Bogota, Colombia; c/o... 16689631 (Colombia) (individual) 3. BAEZA MOLINA, Carlos Alberto, c/o DERECHO INTEGRAL Y CIA. LTDA.,...

  8. Fauna helmintológica peruana: Paryphostomum huaccaci sp. n. (Echinostomotidoe parásito de Cathartes aura jota Molino, 1782

    Directory of Open Access Journals (Sweden)

    Nicanor Ibáñez H.

    2014-06-01

    Full Text Available Es motivo de la presente nota, contribuir al conocimiento de un trematodo: Paryphostomum huaccaci sp. n. perteneciente o la Familia Echinostomatidae Poche, 1926 y que parásita a Cathartes aura jota Molina, 1782.

  9. Listening to music in a risk-reward context: The roles of the temporoparietal junction and the orbitofrontal/insular cortices in reward-anticipation, reward-gain, and reward-loss.

    Science.gov (United States)

    Li, Chia-Wei; Chen, Jyh-Horng; Tsai, Chen-Gia

    2015-12-10

    Artificial rewards, such as visual arts and music, produce pleasurable feelings. Popular songs in the verse-chorus form provide a useful model for understanding the neural mechanisms underlying the processing of artificial rewards, because the chorus is usually the most rewarding element of a song. In this functional magnetic resonance imaging (fMRI) study, the stimuli were excerpts of 10 popular songs with a tensioned verse-to-chorus transition. We examined the neural correlates of three phases of reward processing: (1) reward-anticipation during the verse-to-chorus transition, (2) reward-gain during the first phrase of the chorus, and (3) reward-loss during the unexpected noise followed by the verse-to-chorus transition. Participants listened to these excerpts in a risk-reward context because the verse was followed by either the chorus or noise with equal probability. The results showed that reward-gain and reward-loss were associated with left- and right-biased temporoparietal junction activation, respectively. The bilateral temporoparietal junctions were active during reward-anticipation. Moreover, we observed left-biased lateral orbitofrontal activation during reward-anticipation, whereas the medial orbitofrontal cortex was activated during reward-gain. The findings are discussed in relation to the cognitive and emotional aspects of reward processing.

  10. Varela-Mato, V.; Cancela, J.M.; Ayan, C.; Molina, A.; Martín, V. Lifestyle and Health among Spanish University Students: Differences by Gender and Academic Discipline. Int. J. Environ. Res. Public Health 2012, 9, 2728–2741

    Directory of Open Access Journals (Sweden)

    Vicente Martín

    2013-08-01

    Full Text Available The authors wish to make the following correction to this paper [1]. In the article it is mentioned that “the study obtained the approval of the university’s Students Vice-Chancellery and the government bodies of the involved academic centers and also by the Ethics Committee of the University of Vigo.” However, it should read: “The study obtained the approval of the university’s Students Vice-Chancellery and the government bodies of the involved academic centers” only.

  11. EL HECHO RELIGIOSO Y LA AYUDA SOCIAL. ESTUDIOS SOBRE SU HISTORIA, EPISTEMOLOGÍA Y PRÁCTICA. BELÉN LORENTE MOLINA, EDITORA. CORPORACIÓN COLOMBIANA DE INVESTIGACIONES HUMANÍSTICAS-CENTRO UNIVERSITARIO DE ESTUDIOS SOCIALES, UNIVERSIDAD DE CÁDIZ. BOGOTÁ, 2002

    Directory of Open Access Journals (Sweden)

    Carlos Vladimir Zambrano

    2012-04-01

    y prácticas. También puede ser útil a aquellos investigadores que indagan sobre culturas profesionales o del trabajo. "Este libro -dice ella- es de interés para quienes busquen teóricas para la práctica de la acción social, y para aquellos que se preocupen por su relación con las tradiciones de ayuda, por su lugar en la historia, y por la necesidad de considerarlas para una epistemología de la acción" (p. XVII. El libro aborda el hecho religioso en forma académica, rigurosa y no confesional.

  12. Cressier Patrice, Fierro Maribel, Molina Luis (ed., Los Almohades : problemas y perspectivas, Madrid, Consejo superior de investigaciones científicas, 2005 (Estudios árabes e islámicos : monografías, 11, 2 vol., 1 230 p.

    Directory of Open Access Journals (Sweden)

    Dominique Valérian

    2009-09-01

    Full Text Available En réunissant les actes de trois séminaires organisés entre 2000 et 2002 à la Casa de Velázquez de Madrid sur les Almohades, ce volumineux ouvrage entend faire le point sur les « problèmes et perspectives » de l’histoire de ce qui fut à la fois un mouvement idéologique et religieux, une dynastie et un empire qui marquèrent profondément l’histoire du Maghreb médiéval. Un de ses mérites est de rassembler, autour de cette période charnière, historiens, philologues, archéologues, historiens de l’...

  13. SORIANO DÍAZ, Ramón; ALARCÓN CABRERA, Carlos; MORA MOLINA, Juan (Directores). Diccionario crítico de los derechos humanos. Huelva (España): Universidad Internacio-nal de Andalucia, Sede Iberoamericana, 2000. 315 p.

    OpenAIRE

    Sousa Junior, José Geraldo de

    2009-01-01

    A disposição para o exame deste belo projeto, a edição de um dicionário crítico de direitos humanos, não advém apenas da concordância com as razões da iniciativa. De fato, estou de acordo com os diretores e coordenadores da edição, quanto aos motivos e à oportunidade da publicação da obra: “o interesse social que suscita esta classe de direitos pela relevância do bens jurídicos protegidos, o extraordinário desenvolvimento normativo e institucional, ao nível interno-estatal e internacional, na...

  14. Grieg: Songs and dramatic works with orchestra. / Alan Blyth

    Index Scriptorium Estoniae

    Blyth, Alan

    1993-01-01

    Uuest heliplaadist "Grieg: Songs and dramatic works with orchestra. Barbara Bonney, Randi Stene, Hakan Hagegard, Ruth Tellefsen, Gothenburg Symphony Chorus and Orchestra, Neeme Järvi." CD 437 519 - 2GH

  15. Pop / Raul Saaremets

    Index Scriptorium Estoniae

    Saaremets, Raul

    2007-01-01

    Heliplaatidest: The Horrors "Strange House", Earlies "The Enemy Chorus", Finish Me Off "Seed", Kasabian "Empire", Norah Jones "Not Too Late", Kaiser Chiefs "Yours Truly Angry Mob", Skinny Puppy "Mythmaker", Patrick Wolf "The Magic Position"

  16. Uudised : Ain Anger tuli ooperilauljate konkursil esikohale. Elton Johni fotokogu näitus

    Index Scriptorium Estoniae

    2000-01-01

    A. Anger võitis 11.-14. juuliniu Lätis Jurmalas toimunud rahvusvahelise noorte ooperilauljate konkursi "Amber Sea Voices". E. John korraldab novembris Ameerikas Atlantas oma fotokogu avaliku näituse "Chorus of Light"

  17. Prokofieff: Kantate zum 20. Jahrestag der Oktoberrevolution, Op.74, Neeme Järvi / Joachim Salau

    Index Scriptorium Estoniae

    Salau, Joachim

    1993-01-01

    Uuest heliplaadist "Prokofieff: Kantate zum 20. Jahrestag der Oktoberrevolution, Op.74, Auszüge aus Das Märchen von der steinernen Blume. Gennadij Roshdestwenskij (Sprecher), Philharmonia Chorus, Philharmonia Orchestra, Neeme Järvi. Chandos/Koch CD 9095

  18. A Compressible High-Order Unstructured Spectral Difference Code for Stratified Convection in Rotating Spherical Shells

    CERN Document Server

    Wang, Junfeng; Miesch, Mark S

    2015-01-01

    We present a novel and powerful Compressible High-ORder Unstructured Spectral-difference (CHORUS) code for simulating thermal convection and related fluid dynamics in the interiors of stars and planets. The computational geometries are treated as rotating spherical shells filled with stratified gas. The hydrodynamic equations are discretized by a robust and efficient high-order Spectral Difference Method (SDM) on unstructured meshes. The computational stencil of the spectral difference method is compact and advantageous for parallel processing. CHORUS demonstrates excellent parallel performance for all test cases reported in this paper, scaling up to 12,000 cores on the Yellowstone High-Performance Computing cluster at NCAR. The code is verified by defining two benchmark cases for global convection in Jupiter and the Sun. CHORUS results are compared with results from the ASH code and good agreement is found. The CHORUS code creates new opportunities for simulating such varied phenomena as multi-scale solar co...

  19. Prometheus as Total Theatre: Production Notes

    Science.gov (United States)

    Vos, Erik

    1970-01-01

    Explains the interpretation and techniques the author used in directing "Prometheus Bound," emphasizing the use of the chorus to express emotion and tensions rather than to react to them; illustrated. (SW)

  20. Uudised : New Order keerab grungeks. Kaheksas Haapsalu Vanamuusikafestival tulekul. Kaljuste lindistus saab kiita. Janaceki edu flaami ooperis / Harry Liivrand

    Index Scriptorium Estoniae

    Liivrand, Harry, 1961-

    2001-01-01

    B. Corgan on ans. New Order uus kitarrist. 4.-8. juulini toimuvast Haapsalu Vanamuusikafestivalist. T. Kaljuste ja Madalamaade Kammerkoori poolt salvestatud S. Tanejevi "The twelve choruses" sai hollandis positiivse vastukaja. L. Janaceki ooperi "Kaval rebane" lavastusest Flaami Ooperis

  1. Evaluation of the Status of Anuran Metapopulations on a Refuge in Suburban Maryland

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Because many anurans have well-defined breeding seasons and male anurans produce loud advertisement calls, surveys of these breeding choruses are believed to provide...

  2. Prokofiev: Cantata for the 20th Anniversary of the October Revolution / David J. Fanning

    Index Scriptorium Estoniae

    Fanning, David J.

    1993-01-01

    Uuest heliplaadist "Prokofiev: Cantata for the 20th Anniversary of the October Revolution, Op. 74 a. The Tale of the Stone Flower - experts. Philharmonia Chorus and Orchestra / Neeme Järvi" Chandos ABTD 1597; CHAN9095 (75 minutes:DDD)

  3. Prokofiev: Cantate pour le 20e anniversaire de la revolution d'Octobre op. 74 / Pierre-E. Barbier

    Index Scriptorium Estoniae

    Barbier, Pierre-E.

    1992-01-01

    Uuest heliplaadist "Prokofiev: Cantate pour le 20e anniversaire de la revolution d'Octobre op. 74. La Fleur de pierre op. 118 (extraits). Gennadi Rojdestvenski, Philharmonia Chorus and Orchestra, Neeme Järvi" CHAN 9095

  4. Analysis of High Spatial, Temporal, and Directional Resolution Recordings of Biological Sounds in the Southern California Bight

    Science.gov (United States)

    2013-09-30

    map. To the northwest of the array deployment area is Santa Catalina Island . The array number is listed next to each push-pin location. The data...very shallow- water shelf just offshore in Fig. 1. A few conclusions from the analysis of this chorus are: • The spatial distribution of the...received levels and the directionality of the received sounds indicate the primary region of chorusing occurs in the very shallow water region just offshore

  5. 民族风韵与现代意识的融合——曹光平无伴奏三声部女声合唱《天湖·纳木错》评析%A Fusion of Ethnic Nature and Modem Thinking: An Analysis of Cao Guangping's "Namucuo Lake" a cappella for Female Chorus in Three Voice Parts

    Institute of Scientific and Technical Information of China (English)

    王勇杰

    2009-01-01

    “嗡嘛呢叭咪吽”……每当人们走过纳木错湖畔时,总能听到这发自信徒心底的虔诚咏唱——六字真言。它浓缩着藏族人民的生存、生活和生命,透过它也仿佛听到了藏民族的过去、现在和将来,同时也感受到了宗教文化中的世俗和世俗人文中的宗教。

  6. 高师"合唱与指挥"教学改革应主张实践性和创新性原则%To Lay Stress on Practicality and Creativity of Educational Reform of Chorus and Conduct Curriculum in Normal Schools of Higher Education

    Institute of Scientific and Technical Information of China (English)

    周娟娟; 汪洋

    2010-01-01

    无论是从现代教育理念还是从当今社会需求来看,高师教学改革都应主张实践性和创新性原则,文章主要阐释了实践性和创新性的本质内涵以及在高师教学改革中的具体运用,以期为"突破传统,注重实用,培养出适应社会发展的复合型创新性合唱和指挥人才"寻找一条新路子.

  7. Resonant diffusion of radiation belt energetic electrons by field-aligned propagation whistler-mode chorus waves%场向传播的内磁层哨声波对辐射带高能电子的共振扩散

    Institute of Scientific and Technical Information of China (English)

    倪彬彬; 赵正予; 顾旭东; 汪枫

    2008-01-01

    基于高斯分布的哨声波谱密度分布、偶极子背景磁场模型以及建立在卫星观测数据基础上的半经验电子密度纬度分布模型,对于等离子体层顶以外区域(4≤L≤7),计算了准线性当地及弹跳平均电子共振扩散系数,并估算了与磁层哨声波回旋共振导致的辐射带电子损失及加速时间尺度.结果表明,波粒共振相互作用区域取决于电子能量、波谱分布、电子赤道抛射角以及当地电子密度及背景磁场.哨声波共振频率除了与以上5个参量有关外,还与地磁纬度有关.赤道哨声波主要影响较低能量辐射带电子的加速,中高纬度哨声波主要作用于较高能量辐射带电子的沉降损失.对于较低能量(约200 keV)的辐射带电子,磁层哨声波可以在几个小时内使之沉降,对于较高能量(约1 MeV)的电子,则需要一到数天;对低能量(约200 keV)电子的加热可以在数小时内完成,回旋加速较高能量(约1 MeV)电子一般则需要3-4 d.电子密度分布的改变能够明显影响电子共振损失时间尺度,但是对电子共振加速时间尺度的作用很小.随着电子密度增强幅度随纬度的上升而增大,电子共振损失时间尺度会随之增大,但是电子共振加速时间尺度基本上不变化.另外,哨声波幅度及频谱随L及纬度的分布也显著影响它对辐射带电子的共振扩散效果,这些作用一般要大于电子密度分布变化带来的影响.

  8. ANALYSES OF IMAGES OF LAGENARIA (LAGENARIA SICERARIA (MOLINA) STANDL.) IN PAINTING AS A SOURCE OF INFORMATION FOR THE HISTORY OF INTRODUCTION AND CROP ARCHEOGENETIC Анализ изображения лагенарии (Lagenaria siceraria (molina) standl.) в живописи как источник информации для истории интродукции и археогенетики культуры

    OpenAIRE

    Tsatsenko L. V.

    2013-01-01

    Works of painters of past is the source of information of crop domestication, use in horticultural, species diversity. Lagenaria crop images in painting can also be a resource for determining the morphological changes of the crop in evolution

  9. Thematic Categorization and Analysis of Peer Reviewed Articles in the LISA Database, 2004-2005. A Review of: Gonzalez-Alcaide, Gregorio, Lourdes Castello-Cogolles, Carolina Navarro-Molina, et al. “Library and Information Science Research Areas: Analysis of Journal Articles in LISA.” Journal of the American Society for Information Science and Technology 59.1 (2008: 150-4.

    Directory of Open Access Journals (Sweden)

    Carol Perryman

    2009-03-01

    Full Text Available Objective – To provide an updated categorization of Library and Information Science (LIS publications and to identify trends in LIS research.Design – Bibliometric study.Setting – The Library and Information Science Abstracts (LISA database via the CSA Illumina interface.Subjects – 11,273 item records published from 2004-2005 and indexed in LISA.Methods – First, a search was set up to retrieve all records from 2004-2005, limited to peer review items (called “arbitrated works” by the authors (150 and excluding book reviews. Second, thematic descriptor terms used for the records were identified. Frequency counts for descriptor term occurrence were compiled using Microsoft Access and Pajek software programs. From the results of this search, the top terms were analyzed using the Kamada-Kawai algorithm in order to eliminate descriptor term co-occurrence frequencies under 30. A cluster analysis was used to depict thematic foci for the remaining records, providing a co-word network that visually identified topic areas of most frequent publication. Conclusions were drawn from these findings, and recommendations for further research were provided.Main Results – The authors identified 18 “thematic research core fields” (152 clustered around three large categories, “World Wide Web”, “Education”, and “Libraries”, plus 12 additional peripheral categories, and provided a schematic of field interrelationships.Conclusion – Domains of greatest focus for research “continue to be of practical and applied nature,” (153 but include increased emphasis on the World Wide Web and communications technologies, as well as on user studies. A table of the most frequently occurring areas of research along with their top three descriptor terms is provided (Table1, 152 (e.g., “World Wide Web” as the top area of research, with “online information retrieval” (268 occurrences, “searching” (132 occurrences, and “web sites” (115 occurrences.

  10. Thematic Categorization and Analysis of Peer Reviewed Articles in the LISA Database, 2004-2005. A Review of: Gonzalez-Alcaide, Gregorio, Lourdes Castello-Cogolles, Carolina Navarro-Molina, et al. “Library and Information Science Research Areas: Analysis of Journal Articles in LISA.” Journal of the American Society for Information Science and Technology 59.1 (2008): 150-4.

    OpenAIRE

    Carol Perryman

    2009-01-01

    Objective – To provide an updated categorization of Library and Information Science (LIS) publications and to identify trends in LIS research.Design – Bibliometric study.Setting – The Library and Information Science Abstracts (LISA) database via the CSA Illumina interface.Subjects – 11,273 item records published from 2004-2005 and indexed in LISA.Methods – First, a search was set up to retrieve all records from 2004-2005, limited to peer review items (called “arbitrated works” by the authors...

  11. A test of the Energetics-Hormone Vocalization model in the green treefrog.

    Science.gov (United States)

    Leary, Christopher J; Lippincott, Johnny; Harris, Samuel; Hawkins, Doyle L

    2015-03-01

    Male courtship displays may be regulated by, and affect the production of, circulating hormones. The Energetics-Hormone Vocalization (EHV) model, for example, posits that interactions among chorusing male anuran amphibians stimulate androgen production that then mediates an increase in vocal effort. Increased vocal effort is expected to deplete energy reserves and increase glucocorticoid levels that, in turn, negatively affect androgen levels and vocalization. Androgen levels, glucocorticoid levels, and vocal effort are thus expected to increase across and within nights of chorus activity and should be positively correlated in calling males; energy reserves should decline temporally and be inversely related to glucocorticoid levels. We tested predictions of the EHV model in the green treefrog, Hyla cinerea. Consistent with the model, both testosterone and dihydrotestosterone levels increased across the breeding season in calling males. However, testosterone levels decreased and dihydrotestosterone levels did not change within nights of chorus activity, suggesting that chorusing behavior did not drive the seasonal elevation in androgens. Corticosterone (CORT) level remained relatively stable across the breeding season and decreased within nights of chorus activity, contrary to model predictions. Body condition, the proxy for energetic state, was inversely correlated with CORT level but discrepancies between model predictions and temporal patterns of CORT production arose because there was no evidence of a temporal decrease in body condition or increase in vocal effort. Moreover, androgen and CORT levels were not positively correlated with vocal effort. Additional ecological and physiological measures may be needed to support predictions of the EHV model.

  12. Fisica y vida cotidiana

    CERN Multimedia

    Méndez, R

    2002-01-01

    "Estaba harto de escuchar lo dificil que es ensenar fisica, interesar a los alumnos en gases, tiros parabolicos y campos magneticos. Por eso el profesor de Fisica de la Universidad de Murcia Rafael Garcia Molina decidio hace cinco anos dejar sin argumentos a sus colegas. Comenzo la busqueda de juguetes, regalos y objetos cotidianos para explicar la fisica" (1 page).

  13. Plant location and extraction procedure strongly alter the antimicrobial activity of murta extracts

    DEFF Research Database (Denmark)

    Shene, Carolina; Reyes, Agnes K.; Villarroel, Mario

    2009-01-01

    Leaves and fruits of Murta (Ugni Molinae Turcz.) growing in three locations of Chile with diverse climatic conditions were extracted by using ethanol/water mixtures at different ratios and the antimicrobial activity was assessed. Extracts containing the highest polyphenolic content were from murta...

  14. Map showing principal coal beds of the Clearmont Quadrangle, Sheridan County, Powder River basin, Wyoming

    Science.gov (United States)

    Molnia, C.L.

    1988-01-01

    This map is a product of field mapping and of photogrammetric mapping using color aerial photographs at a scale of approximately 1:24,000 (Molina, 1983). These geologic investigations were part of a project to map the principal coal beds of large parts of the Powder River basin for national coal resource assessment.

  15. Coupling 2D Finite Element Models and Circuit Equations Using a Bottom-Up Methodology

    Science.gov (United States)

    2002-11-01

    EQUATIONS USING A BOTTOM-UP METHODOLOGY E. G6mezl, J. Roger-Folch2 , A. Gabald6nt and A. Molina’ ’Dpto. de Ingenieria Eldctrica. Universidad Polit...de Ingenieria Elictrica. ETSII. Universidad Politdcnica de Valencia. PO Box 22012, 46071. Valencia, Spain. E-mail: iroger adie.upv.es ABSTRACT The

  16. Comment on ``A reduction of order two for infinite-order Lagrangians''

    Science.gov (United States)

    Damour, Thibault; Schäfer, Gerhard

    1988-02-01

    It is pointed out that the reduced two-particle Hamiltonian for the Wheeler-Feynman electrodynamics up to order c-4 was incorrectly calculated in the paper of Jaén, Llosa, and Molina. The correct expression is given, and shown to be equivalent (when e1/m1=e2/m2) to the Golubenkov-Smorodinskii Lagrangian.

  17. Nobel prize awarded to pioneers in ozone research

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-31

    This article details the achievements of the three individuals who shared the 1995 Nobel Prize in Chemistry - Paul Crutzen, Mario Molina, and F. Sherwood Rowland - for their work in atmospheric chemistry, particularly the chemical processes that deplete the ozone layer. Background information about the ozone layer is presented as well as highlights of the ozone research done by the prize winners.

  18. Reference: 19 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 19 http://metadb.riken.jp/db/SciNetS_ria224i/cria224u4ria224u12569131i Lopez-Molin... 410-8 12569131 2003 Feb Genes & development Chua Nam-Hai|Kinoshita Natsuko|Lopez-Molina Luis|Mongrand S辿bastien

  19. Conversando con... RAFAEL MONEO: el arquitecto y enseñante de arquitectura

    OpenAIRE

    Molina Siles, Pedro Javier; Torres Barchino, Ana María

    2014-01-01

    [EN] Interview with Rafael Moneo [ES] Entrevista con Rafael Moneo Molina Siles, PJ.; Torres Barchino, AM. (2014). Conversando con... RAFAEL MONEO: el arquitecto y enseñante de arquitectura. EGA. Revista de Expresión Gráfica Arquitectónica. 19(24):36-49. doi:10.4995/ega.2014.3085. 36 49 19 24

  20. Robin Hoodist Oidipuseni / Pille-Riin Purje

    Index Scriptorium Estoniae

    Purje, Pille-Riin, 1963-

    1996-01-01

    'Ugala' külalisetendused Tallinnas: David Neilsoni 'Robin Hood' (lav. Peeter Tammearu); Mihhail Bulgakovi 'Poolearuline Jourdain' (lav. Üllar Saaremäe); Tirso de Molina 'Kadunud sõrmus' (lav. Andres Noormets); Talvo Pabuti 'Oidipuse kompleks' (lav. Andres Lepik); Anton Tshehhovi 'Kirsiaed' (lav. Kaarin Raid)

  1. Commerce Raiding: Historical Case Studies, 1755-2009

    Science.gov (United States)

    2013-10-01

    reproduced in Lucas Molina Franco and José María Manrique, Legion Condor: La historia olvidada (Valladolid, Sp.: Quirón, 2000), pp. 45–77. 34. For the...Condor: La historia olvidada. Valladolid, Sp.: Quirón, 2000. Frank, Willard C., Jr. “German Clandestine Submarine Warfare in the Spanish Civil War

  2. Programa de educación emocional y gestión del estrés en la Escuela Universitaria de Trabajo Social de Santiago de Compostela

    OpenAIRE

    Rodríguez Piñeiro, Alba

    2013-01-01

    Màster en Educació Emocional i Benestar, Facultat de Pedagogia, Departament de Mètodes d’Investigació i Diagnòstic en Educació, Universitat de Barcelona, curs: 2012-2013, Tutor/Tutora: Mª Cruz Molina Garuz

  3. Commensal Bacteria Control Cancer Response to Therapy by Modulating the Tumor Microenvironment | Poster

    Science.gov (United States)

    Noriho Iida, Amiran Dzutsev, C. Andrew Stewart, Loretta Smith, Nicolas Bouladoux, Rebecca A. Weingarten, Daniel A. Molina, Rosalba Salcedo, Timothy Back, Sarah Cramer, Ren-Ming Dai, Hiu Kiu, Marco Cardone, Shruti Naik, Anil K. Patri, Ena Wang, Francesco M. Marincola, Karen M. Frank, Yasmine Belkaid, Giorgio Trinchieri, Romina S. Goldszmid Science 342(6161):967-970, 2013

  4. Multiperspectivism in the Novels of the Spanish Civil War

    DEFF Research Database (Denmark)

    Hansen, Hans Lauge

    2011-01-01

    stereotyp-opfattelsen af borgerkrigen som en konfrontation mellem det Gode og det Onde. De fire romaner er Javier Cercas' Soldados de Salamina (2001), Alberto Méndez' Los girasoles ciegos (2004), Antonio Muñoz Molina's La noche de los tiempos (2009) og Isaac Rosas Otra maldita novela sobre la guerra civil...

  5. Oportuna compilación

    Directory of Open Access Journals (Sweden)

    Darío Fajardo Montaña

    1986-01-01

    Full Text Available El problema social agrario en Colombia. El pensamiento liberal en la solución del problema agrario. Hernán Toro Agudelo. Ediciones Tercer Mundo, Bogotá, 1984. 435 págs. Orión Agudelo Toro , compilador. Prólogo de Gerardo Molina.

  6. Organic carbon and iron modulate nitrification rates in mangrove swamps of Goa, south west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Krishnan, K.P.; LokaBharathi, P.A.

    , Publishers, San Diego, CA. 275p. Qasim, S.Z., Wafar, M.V.M.,1990. Marine resources in the tropics. Resource Management and Optimization 7,141–169. Rivera-Monroy, V.H., Day, J.D., Twilley, R.R., Vera-Herrera, F., Coronado-Molina 1995.Flux of nitrogen...

  7. Reference: 299 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 299 http://metadb.riken.jp/db/SciNetS_ria224i/cria224u4ria224u16293760i Lipka Volker...t Riyaz|Brandt Wolfgang|Dittgen Jan|Landtag Jörn|Lipka Volker|Llorente Francisco|Molina Antonio|Parker Jane|

  8. Divulgación de la ciencia será prioridad para nuevo Ministro de Ciencia y Tecnología

    OpenAIRE

    Vindas Segura, Manrique

    2013-01-01

    El ingeniero Alejandro Cruz Molina, nuevo ministro de Ciencia y Tecnología, creará la Red de Comunicación de la Ciencia, la Tecnología y la Innovación (RedCyTec) mediante decreto ejecutivo para potenciar una mayor comunicación de la ciencia en el país.

  9. Secciones eficaces en un sistema hamiltoniano con tres grados de libertad /

    OpenAIRE

    2011-01-01

     tesis que para obtener el grado de Doctor en Ciencias (Física), presenta Wilhelm Pablo Karel Zapfe Zaldivar ; asesor Christof Jung Kohl, Luis Benet Fernández, Carlos Federico Bunge Molina. IV, 74 páginas : ilustraciones. Doctorado en Ciencias (Física) UNAM, Facultad de Ciencias, 2011

  10. Ord der forandrer

    DEFF Research Database (Denmark)

    rolle som kritisk og historisk bevidsthed. Værker af så forskellige forfattere som Durif, Tabucchi, Houellebecq, Molinas, Mertens og Antunes tager Sartres grundlæggende spørgsmål om litteraturens samfundsmæssige funktion op igen og bliver analyseret i antologien, der tager forholdet mellem litteratur og...

  11. The Civil-Military Gap in El Salvador

    Science.gov (United States)

    2007-03-30

    Hernandez in USA, Colonel Arturo Molina studied in Mexico . After this period, civilians were presidents and had similar experiences: Napoleon...1 Peace Agreement January 16, 1992, Chapultepec Mexico , available from http://www. elsalvador.com /noticias/especiales/acuerdosdepaz 2002...from http://www.casapres.gob.sv/ presidentes ; Internet; accessed 04 December 2006. 3 Jennifer J. Deal and Don W. Prince, Developing Cultural

  12. Identificación de epítopes CD8+ en la proteína PFR1 de Leishmania Infantum y determinación de su inmunogenicidad como vacuna plasmídica

    OpenAIRE

    Ledesma Arroyo, Darién

    2011-01-01

    27 páginas, 11 figuras, 2 tablas. Tesina del Máster de Investigación y Avances en Inmunología Molecular y Celular. Línea de investigación: Modulación de la respuesta inmune. Tutora Académica: Dra. Ana Abadía Molina.

  13. La fractura política de México en Atempan

    OpenAIRE

    Molina, José Luis

    2013-01-01

    Obra ressenyada: Neptalí RAMÍREZ REYES, La fractura política de México en Atempan, Puebla. Movimiento ciudadano y redes sociales. Puebla: CEPDH, 2012. El presente texto corresponde al prólogo del libro, realizado por el Dr. Jose Luis Molina (Universitat Autònoma de Barcelona).

  14. Electron acceleration by Landau resonance with whistler mode wave packets

    Science.gov (United States)

    Gurnett, D. A.; Reinleitner, L. A.

    1983-01-01

    Recent observations of electrostatic waves associated with whistler mode chorus emissions provide evidence that electrons are being trapped by Landau resonance interactions with the chorus. In this paper, the trapping, acceleration and escape of electrons in Landau resonance with a whistler mode wave packet are discussed. It is shown that acceleration can occur by both inhomogeneous and dispersive effects. The maximum energy gained is controlled by the points where trapping and escape occur. Large energy changes are possible if the frequency of the wave packet or the magnetic field strength increase between the trapping and escape points. Various trapping and escape mechanisms are discussed.

  15. Rapid energization of radiation belt electrons by nonlinear wave trapping

    Directory of Open Access Journals (Sweden)

    Y. Katoh

    2008-11-01

    Full Text Available We show that nonlinear wave trapping plays a significant role in both the generation of whistler-mode chorus emissions and the acceleration of radiation belt electrons to relativistic energies. We have performed particle simulations that successfully reproduce the generation of chorus emissions with rising tones. During this generation process we find that a fraction of resonant electrons are energized very efficiently by special forms of nonlinear wave trapping called relativistic turning acceleration (RTA and ultra-relativistic acceleration (URA. Particle energization by nonlinear wave trapping is a universal acceleration mechanism that can be effective in space and cosmic plasmas that contain a magnetic mirror geometry.

  16. The Knights’ Eleven Oars: In Praise of Phormio? (Ar. Eq. 546-7)

    DEFF Research Database (Denmark)

    Lech, Marcel Lysgaard

    2009-01-01

    The curious “eleven oars” of the chorus of Knights in Aristophanes’ eponymous play recall the victory of Phormio and his eleven triremes in the gulf of Naupactus in 429 B.C., and echo a lost victory ode performed at the celebration of this victory....

  17. Long-term development of how students interpret a model; Complementarity of contexts and mathematics.

    NARCIS (Netherlands)

    Vos, Francisca; Roorda, Gerrit

    2016-01-01

    When students engage in rich mathematical modelling tasks, they have to handle real-world contexts and mathematics in chorus. This is not easy. In this chapter, contexts and mathematics are perceived as complementary, which means they can be integrated. Based on four types of approaches to modelling

  18. Thickening Our Stories: Models for Using Environmental History as Context

    Science.gov (United States)

    Black, Brian

    2003-01-01

    In his position at Penn State University, this author teaches environmental studies (ES) students in core introductory, mid-level, and upper-level courses. As he teaches the first full batch of graduates in this year's Senior Seminar, the chorus is clear: environmental history has played a distinct role in bringing coherence to their ES curricula.…

  19. Reform, Racism and the Centrality of Whiteness: Assessment, Ability and the "New Eugenics"

    Science.gov (United States)

    Gillborn, David

    2010-01-01

    The Nobel Prize winning scientist James Watson was vilified when his views on the supposedly inherent deficiencies of black people became public. The scientific establishment, mainstream media and politicians joined a chorus of disapproval that would seem to evidence a widespread rejection of the old myths of racially ordered intelligence.…

  20. Russian orchestral works. Torgny Sporsen / Ivan March

    Index Scriptorium Estoniae

    March, Ivan

    1991-01-01

    Uuest heliplaadist "Russian orchestral works. Torgny Sporsen (bass). Gothenburg Symphony Brass Band. Gothenburg Symphony Chorus and Orchestra / Neeme Järvi" D6 MC 429 984 - 4 GH; CD 429 984 - 26H (76 minutes). Borodin: In Central Asia. Prince Igor - Polovtsian Dances

  1. Grieg: Works for String Orchestra. Gothenburg Symphony Orchestra, Neeme Järvi / Sanders, Alan

    Index Scriptorium Estoniae

    Sanders, Alan

    1993-01-01

    Uuest heliplaadist "Grieg: Works for String Orchestra. Gothenburg Symphony Orchestra, Neeme Järvi. CD 437 520 - 2GH Grieg: Land Sighting, Op.32, Olav Trygvason, Op.50, Per Gynt Suites N1,Op.46, N2,Op.55. Randi Stene, Anne Gjevang, Hakan Hagegard, Gothenburg Symphony Chorus, Gothenburg Symphony Orchestra, Neeme Järvi. CD 437 523 - 2 GH

  2. Signal recognition by green treefrogs (Hyla cinerea) and Cope's gray treefrogs (Hyla chrysoscelis) in naturally fluctuating noise.

    Science.gov (United States)

    Vélez, Alejandro; Bee, Mark A

    2013-05-01

    This study tested three hypotheses about the ability of female frogs to exploit temporal fluctuations in the level of background noise to overcome the problem of recognizing male advertisement calls in noisy breeding choruses. Phonotaxis tests with green treefrogs (Hyla cinerea) and Cope's gray treefrogs (Hyla chrysoscelis) were used to measure thresholds for recognizing calls in the presence of noise maskers with (a) no level fluctuations, (b) random fluctuations, or level fluctuations characteristic of (c) conspecific choruses and (d) heterospecific choruses. The dip-listening hypothesis predicted lower signal recognition thresholds in the presence of fluctuating maskers compared with nonfluctuating maskers. Support for the dip-listening hypothesis was weak; only Cope's gray treefrogs experienced dip listening and only in the presence of randomly fluctuating maskers. The natural soundscapes advantage hypothesis predicted lower recognition thresholds when level fluctuations resembled those of natural soundscapes compared with artificial fluctuations. This hypothesis was rejected. In noise backgrounds with natural fluctuations, the species-specific advantage hypothesis predicted lower recognition thresholds when fluctuations resembled species-specific patterns of conspecific soundscapes. No evidence was found to support this hypothesis. These results corroborate previous findings showing that Cope's gray treefrogs, but not green treefrogs, experience dip listening under some noise conditions. Together, the results suggest level fluctuations in the soundscape of natural breeding choruses may present few dip-listening opportunities. The findings of this study provide little support for the hypothesis that receivers are adapted to exploit level fluctuations of natural soundscapes in recognizing communication signals.

  3. Has matter's mother paid a call?

    CERN Multimedia

    Weiss, P

    2003-01-01

    "..Stunning results .. are prompting a growing chorus of physicists to say that it's time to declare success in a decades-long quest to make quark-gluon plasma - an extremely hot, dense soup of matter that contains loose fundamental particles known as quarks and gluons" (1 page).

  4. 75 FR 986 - Granting of Request for Early Termination of the Waiting Period Under the Premerger Notification...

    Science.gov (United States)

    2010-01-07

    ... Agropur Cooperative. G Sjerp W. Ysselstein. G Green Meadows Food, LLC. 20100083 G Tellabs, Inc. G WiChorus... Marketing Worlwide, Inc. 20100106 G Groupe Aeroplan Inc. G The Barbara Carlson Gage 1998 GST Family Trust. G Carlson Marketing Worlwide, Inc. 20100110 G GS Capital Partners VI, L.P. G Compass Investors Inc....

  5. HOW TO KEEP SCHOOL NOISE AT THE RIGHT LEVEL.

    Science.gov (United States)

    MCKAY, RONALD L.

    DISCUSSES FACTORS TO BE CONSIDERED DURING SCHOOL PLANNING STAGES REGARDING NOISE LEVELS AND ACOUSTIC DESIGN IMPLICATIONS. FACTORS ARE--(1) A STAGE HOUSE IS DETRIMENTAL TO ORCHESTRAS, BANDS, CHORUSES, LECTURES, ASSEMBLIES, RECITALS, AND CERTAIN DRAMAS AND SPEECH-MUSIC PERFORMANCES. SUGGESTED IS AN AUDITORIUM WITH AUDIENCE AND PERFORMING PLATFORM…

  6. Masses, mélange et oscillations de neutrinos

    CERN Document Server

    Wilquet, Gaston

    The experimental situation concerning the measurements of neutrinos masses, mixing and oscillation is reviewed, as well as of the underlying phenomenology. A particular attention is given to the CERN experimental program to which I took or take part, CHARM-II, CHORUS and OPERA. In the last chapter, I try to put into perspective the medium and long term experimental programme.

  7. A Telepresence Learning Environment for Opera Singing: Distance Lessons Implementations over Internet2

    Science.gov (United States)

    Alpiste Penalba, Francisco; Rojas-Rajs, Teresa; Lorente, Pedro; Iglesias, Francisco; Fernández, Joaquín; Monguet, Josep

    2013-01-01

    The Opera eLearning project developed a solution for opera singing distance lessons at the graduate level, using high bandwidth to deliver a quality audio and video experience that has been evaluated by singing teachers, chorus and orchestra directors, singers and other professional musicians. Prior to finding a technological model that suits the…

  8. Primary Care's Dim Prognosis

    Science.gov (United States)

    Alper, Philip R.

    2010-01-01

    Given the chorus of approval for primary care emanating from every party to the health reform debate, one might suppose that the future for primary physicians is bright. Yet this is far from certain. And when one looks to history and recognizes that primary care medicine has failed virtually every conceivable market test in recent years, its…

  9. “Behandl dig selv med honning"

    DEFF Research Database (Denmark)

    Mejrup, Kristian; Bjerring-Nielsen, Mattias

    2015-01-01

    with a heavenly figure, a potent Joseph lookalike, who reveals to her inexpressible secrets mediated in an exuberant honeycomb. The revelatory capacity of honey is stylistically rendered by means of repetition, pleonasm, chorus, reprises and gestures. The encounter with “Das ganz Andere” does not leave Aseneth...

  10. Fritids- og sportsaktiviteter hos yngre pacemakerpatienter

    DEFF Research Database (Denmark)

    Mickley, H; Petersen, J

    1989-01-01

    : Badminton (3), bicycle-riding (6), firefighting (1), fishing (3), golf (2), gymnastics (3), handball (1), hunting (4), riding (1), running/jogging (4), sailing (5), shooting (2), skiing (3), soccer (5), swimming (1), theatre (1), chorus (1), and tennis (2). No significant changes in the levels of activity...

  11. Potential component Allee effects and their impact on wetland management in the conservation of endangered anurans.

    Directory of Open Access Journals (Sweden)

    Michele A Gaston

    Full Text Available Effective management of wetland quantity and quality is crucial for effective conservation of declining amphibian populations. In particular, frogs and toads that employ aggregative breeding strategies may suffer negative population impacts in response to changes in availability of aquatic breeding habitat, including overabundance of suitable habitat, if density of conspecifics attending aggregations is positively correlated with reproductive success. Here we document such a positive relationship, potentially the first example of a component Allee effect in an anuran, in the critically endangered Houston toad (Bufo houstonensis. We assessed the relationship between mean yearly chorus size and reproductive success of males at the pond level using an information theoretic model selection approach and a two-sample t-test. The chosen model contained the single variable of mean yearly chorus size to predict probability of reproduction, as selected using the Akaike Information Criterion corrected for small sample size and Akaike weight. Mean chorus sizes were significantly higher among ponds exhibiting evidence of reproduction than in those that showed no evidence of reproduction. Our results suggest that chorusing alone is a poor proxy for inference of population stability and highlight a need for reassessment of widely-used amphibian monitoring protocols. Further, amphibian conservation efforts should account for potential Allee effects in order to optimize benefits and avoid underestimating critical population thresholds, particularly in species exhibiting rapid population declines.

  12. Harmonious Night,Beautiful Singing

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>An 80-member Chinese delegation consisting of the Red Star Chorus and reporters arrived in Singapore on March 1 for a performance tour.It was headed by Li Yonglong, Political Commissar of the People’s Liberation Army Academy of Arts with the famous tenor Li Shuangjiang as art director.

  13. Status of the search for $\

    CERN Document Server

    Saltzberg, D

    1996-01-01

    The CHORUS experiment is searching for nu-mu to nu-tau oscillations using an 800 kilogram emulsion target and an electronic detector. Two of four years of running have been completed. The experiment will probe small mixing angles for squared neutrino mass differences greater than 10 eV^2, at least one order of magnitude better than previous limits.

  14. Springs

    Institute of Scientific and Technical Information of China (English)

    James J. Kilpatrick

    2006-01-01

    @@ Springs are not always the same. In some years, April bursts upon our Virginia hills in one prodigious leap-and all the stage is filled at once, whole choruses of tulips, arabesques of forsythia, cadenzas of flowering plum. The trees grow leaves overnight

  15. Resonant and non-resonant whistlers-particle interaction in the radiation belts

    NARCIS (Netherlands)

    Camporeale, E.

    2015-01-01

    We study the wave-particle interactions between lower band chorus whistlers and an anisotropic tenuous population of relativistic electrons. We present the first direct comparison of first-principle Particle-in-Cell (PIC) simulations with a quasi-linear diffusion code. In the PIC approach, the waves

  16. Resonant and non-resonant whistlers-particle interaction in the radiation belts

    NARCIS (Netherlands)

    Camporeale, E.

    2014-01-01

    We study the wave-particle interactions between lower band chorus whistlers and an anisotropic tenuous population of relativistic electrons. We present the first direct comparison of first-principle Particle-in-Cell (PIC) simulations with a quasi-linear diffusion code, in this context. In the PIC ap

  17. Is Inheritance Tax the Answer to A Fair Distribution of Wealth?

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    After the snow disaster in south China and the massive earthquake in Sichuan Province in the first half of 2008, the nation showed its support by donating almost 100 billion yuan ($14.3billion). This has prompted a chorus of voices

  18. "Blessed": Musical Talent, Smartness, & Figured Identities

    Science.gov (United States)

    Hoffman, Adria R.

    2015-01-01

    The purpose of this study is to explore smartness and talent as social constructs. Drawing on Holland et al.'s (1998) figured identities, this article explores the figuring of abilities by elucidating the voices of African American high school chorus students. Critical Race Theory (CRT) helps to unpack normalized language and practices that…

  19. Neue Klassik-CDs

    Index Scriptorium Estoniae

    2001-01-01

    Firma Antes plaatide seas "Eesti portreed. Werke für Flöte und Gitarre", "Kangro. Klavierkonzert Nr.2"; Deutsche Grammophon'i plaat "Steinberg dir, N. Järvi"; Globe plaat "Tanejev. The Twelve Choruses op. 27", dir. T. Kaljuste

  20. Kodaly, Dalcroze, Orff, and Suzuki: Application in the Secondary Schools.

    Science.gov (United States)

    Turpin, Douglas

    1986-01-01

    Suggestions to help music teachers adapt the following teaching methods are provided: the Dalcroze method for dance class; the Kodaly method for instrumentalists; the Orff method for string players; the Suzuki method for instrumentalists; and the Kodaly method for chorus. (RM)

  1. Environment Assessment for Grand Bay Range, Bemiss Field, and Moody Explosive Ordnance Disposal Range Operations

    Science.gov (United States)

    2013-06-01

    Protection of Historic Properties (36 CFR 800); Preserve America (EO 13287); and Archeological Resources Protection Act (PL 96-95; 16 USC 470...exception of those identified as threatened, endangered, or sensitive. Wildlife includes fish, amphibians, reptiles , birds, and mammals. Sensitive...chorus frog (Pseudacris nigrita), eastern newt (Notophthalmus viridescens), and tiger salamander (Ambystoma tigrinum). Reptiles found on the Installation

  2. Raising Student Expectations.

    Science.gov (United States)

    VocEd, 1980

    1980-01-01

    Authors explore ways of helping students improve their self-esteem, interpersonal relationships, and value to an employer. Offers strategies from the world of work (customer satisfaction cards) and the world of dance (chorus line class that improves poise in job interviews). Suggests ways to find appropriate instructional materials for handicapped…

  3. Policy Fight Brews over Discipline

    Science.gov (United States)

    Shah, Nirvi

    2011-01-01

    A new report finding that black and Hispanic students are far more likely to be kicked out of school when they break the rules adds to a growing chorus of concern over the discipline policies being used in K-12 schools. Over the past two years, an increasing number of reports and initiatives have pointed out problems with 'zero tolerance"…

  4. Factors de risc emergents en cardiopatia isquèmica. Paper dels marcadors d'oxidació lipídica

    OpenAIRE

    Gómez Pérez, Miquel

    2014-01-01

    1. Gómez M, Valle V, Arós F, Sanz G, Sala J, Fiol M, Bruguera J, Elosua R, Molina L, Martí H, Covas MI, Rodríguez-Llorián A, Fitó M, Suárez-Pinilla MA, Amezaga R, Marrugat J. Ldl oxidada, lipoproteína(a) y otros factores de riesgo emergentes en el infarto agudo de miocardio (estudio Fortiam). Rev Esp Cardiol.2009; 62:373-82 (Impact Factor 2,746) (ISSN: 0300-8932) 2. Gómez M, Molina L, Bruguera J, Sala J, Masià R, Muñoz-Aguayo D, Tomás M, Heredia S, Blanchart G, Gaixas S, Vila J, Fitó M; Ox...

  5. Factors de risc emergents en cardiopatia isquèmica. Paper dels marcadors d'oxidació lipídica

    OpenAIRE

    Gómez Pérez, Miquel; Cladellas Capdevila, Mercè

    2014-01-01

    1. Gómez M, Valle V, Arós F, Sanz G, Sala J, Fiol M, Bruguera J, Elosua R, Molina L, Martí H, Covas MI, Rodríguez-Llorián A, Fitó M, Suárez-Pinilla MA, Amezaga R, Marrugat J. Ldl oxidada, lipoproteína(a) y otros factores de riesgo emergentes en el infarto agudo de miocardio (estudio Fortiam). Rev Esp Cardiol.2009; 62:373-82 (Impact Factor 2,746) (ISSN: 0300-8932) 2. Gómez M, Molina L, Bruguera J, Sala J, Masià R, Muñoz-Aguayo D, Tomás M, Heredia S, Blanchart G, Gaixas S, Vila J, Fitó M; Oxidi...

  6. Fijacion primaria y variaciones morfologicas, durante la metamorfosis de algunos bivalvos chilenos

    Directory of Open Access Journals (Sweden)

    Juan Uribe Barichivith

    1980-12-01

    Full Text Available The larval primary settlement and the changes originated during the metamorphosis of some species of Chilean bivalves, are comparatively studied, being described, the larval and post - larval stages from the veliconcha to late plantigrade. By observing in ropes "anchovetera" nets and plankton samples, in the mitiliculture of Codihué (41º 46'S; 73º 24'W, it was verified for Mytilus chilensis Hupé, 1854 and Aulacomya ater (Molina, 1782, primary settlement on the filamentous algae of genera Enteromorpha with an average size of 33º µ high, minimum average of definitive settlement, byssus positional changes, etc. Information concerning average and number of larval and post - larval attachment to different deep and inmersión period and morphological characters of larval and post - larval of: Bankia martensi Stempell, 1898 (Teredinidae, Pholas chiloensis (Molina, 1782 (Pholadidae y Chlamys patriae Doello Jurado, 1918 (Pectinidae, are also given.

  7. Biología de Delphastus quinculus (Gordon 1994) (Coleoptera : Coccinellidae) bajo diferentes temperaturas

    OpenAIRE

    2015-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Entomología Delphastus quinculus (Gordon, 1994) es un predador que ha sido reportado importante, para el control del complejo de la mosca blanca de los invernaderos Trialeurodes vaporariorum (Westwood, 1856). Para obtener información sobre algunos aspectos de su biología y el efecto de la temperatura en su desarrollo, se realizaron experimentos bajo condiciones de laboratorio a seis1temperaturas constantes...

  8. Nuevas adiciones de bivalvos a la malacofauna marina peruana

    Directory of Open Access Journals (Sweden)

    Carlos Paredes

    2014-06-01

    Full Text Available Cuatro especies de moluscos bivalvos marinos, Nuculana (Jupiteria cuneata (Sowerby, 1833, Isognomon (Isognomón janus Carpenter, 1857, Ostrea conchaphila Carpenter, 1857 y Mysella (Rochefortia molinae Ramorino, 1968 se reportan por primera vez para el mar peruano. Se incluye datos sobre la distribución geográfica y el hábitat de cada una de las especies.

  9. Erectile Dysfunction Among HIV Patients Undergoing Highly Active Antiretroviral Therapy: Dyslipidemia as a Main Risk Factor

    Directory of Open Access Journals (Sweden)

    Gustavo Romero‐Velez, MD

    2014-04-01

    Conclusions: ED is highly prevalent in HIV patients. Dyslipidemia should be considered as a risk factor for ED in HIV patients. Romero‐Velez G, Lisker‐Cervantes A, Villeda‐Sandoval CI, Sotomayor de Zavaleta M, Olvera‐Posada D, Sierra‐Madero JG, Arreguin‐Camacho LO, and Castillejos‐Molina RA. Erectile dysfunction among HIV patients undergoing highly active antiretroviral therapy: Dyslipidemia as a main risk factor. Sex Med 2014;2:24–30.

  10. Una nueva especie de Iragua Melichar, 1926 (Insecta: Homoptera: Cicadellidae

    Directory of Open Access Journals (Sweden)

    Pedro W. Lozada

    2014-06-01

    Full Text Available Se describe e ilustra una nueva especie de Iragua Melichar, I. chola sp. n., de material procedente de la Zona Reservada de Tambopata, departamento de Madre de Dios, y de Chanchamayo, departamento de Junín, en Perú. El material tipo se encuentra depositado en las colecciones del Museo Nacional de Historia Natural y del Museo de Entomología de la Universidad Nacional Agraria La Molina, Lima, Perú.

  11. Worldwide Report, Telecommunications Policy, Research, and Development

    Science.gov (United States)

    2007-11-02

    requirements for this type product, creating the possibility of exporting them to the Western countries. The first Polish fiberoptic cables have already been... export policy." Brazilian Policy Buenos Aires MERCADO in Spanish 26 Sep 85 p 76 [Text] The Case of Brazil The program that Brazil’s then military...Bull; Liana Lew, the special projects manager for the TTI-Bradas-Burroughs consortium; Carlos Maria Molina from Micro Sistemas , and Jorge Chorny, an

  12. Latin America Report. No. 2738.

    Science.gov (United States)

    1983-09-14

    Acero Espinosa ; EL TIEMPO, 25 Jul 83) 23 Rodriguez Report to L.A. Economists Meeting Published (Roberto Molina; PRISMA LATINOAMERICANO, Jul 83...Fernandez, Jorge Ivan Hubner Gallo, Bernardo Larrain Vial, Gustavo Lorca Rojas , Gustavo Loyola Vasques, Fernando Maturana Erbetta, Mario Marchant Binder...CUNDINAMARCA Bogota EL TIEMPO in Spanish 25 Jul 83 p 10-D [Article by special correspondent German Acero Espinosa ] [Text] La Mesa, Cundinamarca—We

  13. Water depth selection during foraging and efficiency in prey capture by the egrets Casmerodius albus and Egretta thula (Aves, Ardeidae) in an urban lagoon in Rio de Janeiro State, Brazil Seleção de profundidade da água durante o forrageamento e eficiência na captura de presas por Casmerodius albus e Egretta thula (Aves, Ardeidae) em uma lagoa urbana no Estado do Rio de Janeiro, Brasil

    OpenAIRE

    Moreno,Aline B.; Adriano R. Lagos; MARIA ALICE S. ALVES

    2005-01-01

    This study aimed to evaluate the water depth selection during foraging, the efficiency in prey capture, and the food items captured by Casmerodius albus (Linnaeus, 1758) and Egretta thula (Molina, 1782). The work was conducted at an urban lagoon, Lagoa Rodrigo de Freitas, Rio de Janeiro. Four transects were made each month (two in the morning and two in the afternoon) for six months. When the birds were detected foraging, the water depth and the types of prey captured were recorded. There was...

  14. Translation methods and procedures applied to Fantastic Beasts and Where to find them and Quidditch Through the Ages by J. K. Rowling

    OpenAIRE

    Mena Velasco, Sonia

    2016-01-01

    This dissertation deals with the analysis of the translation of two books originally written by J. K. Rowling. For this purpose, we have studied translation procedures and translation methods, as well as redundancy and cohesion. We have taken into account experts in translation, such as Newmark, Amparo Hurtado Albir, and Lucía Molina. The aim of this paper is to have a further approach to translation and consequently, understand the process involved in this subject. El presente trabajo se ...

  15. What would have happened to the ozone layer if chlorofluorocarbons (CFCs) had not been regulated?

    OpenAIRE

    Newman, P. A.; L. D. Oman; Douglass, A.R.; E. L. Fleming; Frith, S. M.; M. M. Hurwitz; Kawa, S. R.; C. H. Jackman; N. A. Krotkov; Nash, E. R.; Nielsen, J E; S. Pawson; Stolarski, R. S.; G. J. M. Velders

    2008-01-01

    Ozone depletion by chlorofluorocarbons (CFCs) was first proposed by Molina and Rowland in their 1974 Nature paper. Since that time, the scientific connection between ozone losses and CFCs and other ozone depleting substances (ODSs) has been firmly established with laboratory measurements, atmospheric observations, and modeling research. This science research led to the implementation of international agreements that largely stopped the production of ODSs. In this study we use a fully-c...

  16. Cytogenetic characterization of Caesalpinia spinosafrom Tarma and Palca (Junín

    Directory of Open Access Journals (Sweden)

    Alberto López

    2014-03-01

    Full Text Available Somatic chromosomes of Caesalpinia spinosa (Feuillée ex Molina Kuntze, “Tara”, wild populations of Huinco and Palca (Junín regions were studied. The specie were diploid (2n=24. Chromosomes were small. The karyotypes showed the same chromosome number, they found differences in morphological parameters of the same, with the karyotype formula for the town of Huinco: 6m + 6 sm and the town of Palca: 5m + 7 sm.

  17. CHITEC, Invovation Changes the World%CHITEC,Invovation Changes the World

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    @@ Platform to show Pablo Molina Petrovich,general manager architect of Architectural Office Association of Chile,is satisfied with what he has achieved by displaying a promotion booth for his newly-established China office at the 12th CHITEC."Our Beijing office was just established at the early January this year,so it's high time to promote ourselves to be more familiar with Chinese.China now is full of opportunities here," he said.

  18. Luces y sombras de la calidad de la democracia en América Latina

    Directory of Open Access Journals (Sweden)

    Manuel Alcántara Sáez

    2008-07-01

    Full Text Available El artículo analiza el concepto de calidad de la democracia, contemplando la aplicación de distintos índices a la realidad política de los países de América Latina; a saber: Freedom House, IDD (Fundación Konrad Adenauer, The Economist Intelligence Unit (EIU y el elaborado por Levine y Molina.

  19. Niveles de Malondialdehido y Catalasa en tejidos de cobayos nativos de la altura

    OpenAIRE

    Torres M., César A.; Departamento Académico de Bioquímica, Facultad de Farmacia y Bioquímica de la Universidad Nacional Mayor de San Marcos, Lima, Perú.; Perales S., María I.; Departamento Académico de Bioquímica, Facultad de Farmacia y Bioquímica de la Universidad Nacional Mayor de San Marcos, Lima, Perú.; Zúñiga C., Haydée; Instituto Nacional de Biología Andina, Facultad de Medicina, Universidad Nacional Mayor de San Marcos, Lima, Perú. Facultad de Farmacia y Bioquímica de la Universidad Nacional Mayor de San Marcos, Lima, Perú.; Carranza A., Elizabeth; Departamento Académico de Bioquímica, Facultad de Farmacia y Bioquímica de la Universidad Nacional Mayor de San Marcos, Lima, Perú.

    2014-01-01

    In the present study, levels of malondialdehyde (MDA), end product of lipid peroxydation, and activity of catalase, a protective enzyme, in heart , kidney, liver and lung of guinea pigs born and bred in the altilude (Cullhuay, 3642 m), and another from sea level (La Molina, 238 m), were determined, in order to establish whether there exist any differences, and better understand of the oxydative stress in high altitude natives. Tissue levels of MDA were assessed by the n-methy-l-phenylindol me...

  20. 编辑推荐

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    摩卡站 With the success of their two restaurants, Mosto and Modo Urban Deli, chef Daniel Urdaneta, from Venezuela, and co- owner Alex Molina, from Columbia, are now embarking on a new concept for their cuisine empire. Moka Bros opened last month in Nali Patio, Sanlitun, and the partners' concept is for the eatery to be a casual spot tbr urban diners to relax and have access to clean, healthy and affordable food.

  1. United States Military-To-Military Contact with the People’s Liberation Army of China

    Science.gov (United States)

    2002-06-01

    Martinez 1945-1948 General Salvador Castaneda Castro 1948-1950 Revolutionary Council of Government 1950-1956 Lt. Col Oscar Osorio 1956-1960 Colonel...Julio A. Rivera 1967-1972 General Fidel Sanchez Hernandez 1972-1977 Colonel Arturo Armando Molina 1977-1979 General Carlos Humberto Romero Table 2...remained in power until a new round of elections was held. Elections were carried out in 1945, and retired General Salvador Castaneda Castro won and

  2. [Reseñas Bibliográficas] Atlas de la flora vascular silvestre de Burgos

    Directory of Open Access Journals (Sweden)

    Iñaki Aizpuru

    2005-01-01

    Full Text Available Es una reseña bibliográfica de la obra, Atlas de la flora vascular silvestre de Burgos / Alejandre Sáenz, J.M. García-López, L. Marín Padellano, G. Mateo Sanz, E. Miguélez del coso, C. Molina Martín, G. Montamarta Prieto, S. Patino Sánchez, M.A. Pinto Cebrián 6 J. Valencia Janices.

  3. El fantástico Hombre Bala

    Directory of Open Access Journals (Sweden)

    Pepa Merlo

    2011-12-01

    Full Text Available Hablar de El Fantástico hombre bala, es hablar de una pequeña joya en todos los sentidos: una cuidada edición que la editorial El Páramo mima con ilustraciones de Alicia Gómez Molina, intercaladas entre los cuentos como si se tratara de una novela gráfica, introduciéndonos magistralmente en los veintisiete relatos asombrosos del libro.

  4. La reagrupación familiar en el ámbito municipal en España. Análisis comparado en región mediterrânea

    Directory of Open Access Journals (Sweden)

    Enrique Pastor Seller

    2015-12-01

    Full Text Available Resumen:En el artículo se presentan los resultados de una investigación comparativa de la evolución del proceso de reagrupación familiar de extranjeros no comunitarios en España, la Región de Murcia y el municipio de Molina de Segura en el período 2007-2014. Se analiza la evolución de la reagrupación familiar, mediante el acceso a fuentes secundarias. Para caracterizar el perfil del reagrupante se realizan entrevistas estructuradas al universo de solicitantes de informe de adecuación de vivienda para reagrupación familiar en Molina de Segura. Se aplica un cuestionario a extranjeros no comunitarios para describir las tendencias en reagrupación familiar en Molina de Segura y para conocer los conflictos surgidos en las familias reagrupadas se llevan a cabo entrevistas en profundidad a actores expertos y estratégicos. Los resultados evidencian que los cambios normativos y la actual crisis económica inciden, entre otros factores, a los procesos de reagrupación familiar. En este contexto es necesario incrementar los recursos destinados a los Servicios de Bienestar local para favorecer la integración real de las personas inmigrantes y mantener los niveles de cohesión social.

  5. Abundance of Conepatus chinga (Carnivora, Mephitidae and other medium-sized mammals in grasslands of southern Brazil

    Directory of Open Access Journals (Sweden)

    Carlos B. Kasper

    2012-09-01

    Full Text Available Between January 2007 and December 2010, the abundance of medium-sized mammals was studied, with special focus on the Molina's hog-nosed skunk, Conepatus chinga (Molina, 1782, at four locations in southern Brazil. In this study, transect line methodology was used to obtain data for Distance Analyses. Transects were traveled by car at night, searching with spotlights along the edges of secondary roads in agricultural landscapes. Along 1,811 km, we obtained 620 observations of 20 mammal species. The most common species was the exotic European hare, Lepus europaeus (Pallas, 1778; the highest abundance estimated for South America was observed in one of the study areas, where its density was estimated as 32 individuals/km². Carnivores were the most commonly recorded mammals, represented by 10 species and comprising 51% of all observations. Molina's hog-nosed skunk occurred in all study areas, but occurred in sufficient numbers to obtain density estimates in only two of the areas. We estimated 1.4 to 3.8 individuals/km², in the first density estimate made by the transect method for a member of Conepatus in the Neotropics. These values are similar to those estimated for North American species of Mephitidae. In Brazil, C. chinga is apparently more abundant in the Pampa biome than in the grasslands of the Atlantic Forest. For two other carnivores, Lycalopex gymnocercus (Fisher, 1814 and Cerdocyon thous (Linnaeus, 1766, we estimated preliminary densities that were similar to those previously cited for different regions.

  6. Interim communities between singularities: encounters of delicacy, artistic creation and difference

    Directory of Open Access Journals (Sweden)

    Juliana Araújo Silva

    2015-09-01

    Full Text Available This article is an outcome of the dissertation “Poetics and marginality: the Project Cidadãos Cantantes experience” that focused on the chorus collective experience, in the project focusing the formation of groupality, the ways of being together or coexisting, and presents an analysis of these procedures. This Project was created on 1992 in the interface of antimanicomial movement. It consists in two workshops: a scenic chorus workshop and a workshop of dance and body expression. Through the project, the authors elaborated a narrative that leads the analyses of the mentioned experience. It is understood that promoting encounters between any kind of people, with or without psychic suffering - and not grouped based on a definition or diagnosis, the project can bring people in a desiring and cooperatively manner-. Therefore, the relationships developed during the project’s workshops strengthen the production of guided encounters in power, in the creation and respect for differences.

  7. The guitar chord-generating algorithm based on complex network

    Science.gov (United States)

    Ren, Tao; Wang, Yi-fan; Du, Dan; Liu, Miao-miao; Siddiqi, Awais

    2016-02-01

    This paper aims to generate chords for popular songs automatically based on complex network. Firstly, according to the characteristics of guitar tablature, six chord networks of popular songs by six pop singers are constructed and the properties of all networks are concluded. By analyzing the diverse chord networks, the accompaniment regulations and features are shown, with which the chords can be generated automatically. Secondly, in terms of the characteristics of popular songs, a two-tiered network containing a verse network and a chorus network is constructed. With this network, the verse and chorus can be composed respectively with the random walk algorithm. Thirdly, the musical motif is considered for generating chords, with which the bad chord progressions can be revised. This method can make the accompaniments sound more melodious. Finally, a popular song is chosen for generating chords and the new generated accompaniment sounds better than those done by the composers.

  8. Studies of Annual and Seasonal Variations in Four Species of Reptiles and Amphibians at Los Alamos National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Keller, D.C.; Nelson, E.I.; Mullen, M.A.; Foxx, T.S.; Haarmann, T.K.

    1998-07-01

    Baseline studies of reptiles and amphibians of the Pajarito wetlands at Los Alamos National Laboratory have been conducted by the Ecology group since 1990. With the data gathered from 1990-1997 (excluding 1992), we examined the annual and seasonal population changes of four species of reptiles and amphibians over the past seven years. The four species studied are the Woodhouse toad (Bufo woodhousii), the western chorus frog (Pseudacris triseriata), the many-lined skink (Eunzeces nudtivirgatus), and the plateau striped whiptail lizard (Cnemidophorus velox). Statistical analyses indicate a significant change on a seasonal basis for the western chorus frog and the many-lined skink. Results indicate a significant difference in the annual population of the Woodhouse toad.

  9. Studies of annual and seasonal variations in four species of reptiles and amphibians at Los Alamos National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Nelson, E.I.; Haarmann, T.; Keller, D.C.; Foxx, T.

    1998-11-01

    Baseline studies of reptiles and amphibians of the Pajarito wetlands at Los Alamos National Laboratory have been conducted by the Ecology group since 1990. With the gathered data from 1990--1997 (excluding 1992), they plan to determine if patterns can be found in the annual and seasonal population changes of four species of reptiles and amphibians over the past seven years. The four species studied are the Woodhouse toad, the western chorus frog, the many-linked skink, and the plateau striped whiptail lizard. Statistical analysis results show that significant changes occurred on a seasonal basis for the western chorus frog and the many-lined skink. Results indicate a significant difference in the annual population of the Woodhouse toad.

  10. Ultra-low-frequency wave-driven diffusion of radiation belt relativistic electrons.

    Science.gov (United States)

    Su, Zhenpeng; Zhu, Hui; Xiao, Fuliang; Zong, Q-G; Zhou, X-Z; Zheng, Huinan; Wang, Yuming; Wang, Shui; Hao, Y-X; Gao, Zhonglei; He, Zhaoguo; Baker, D N; Spence, H E; Reeves, G D; Blake, J B; Wygant, J R

    2015-12-22

    Van Allen radiation belts are typically two zones of energetic particles encircling the Earth separated by the slot region. How the outer radiation belt electrons are accelerated to relativistic energies remains an unanswered question. Recent studies have presented compelling evidence for the local acceleration by very-low-frequency (VLF) chorus waves. However, there has been a competing theory to the local acceleration, radial diffusion by ultra-low-frequency (ULF) waves, whose importance has not yet been determined definitively. Here we report a unique radiation belt event with intense ULF waves but no detectable VLF chorus waves. Our results demonstrate that the ULF waves moved the inner edge of the outer radiation belt earthward 0.3 Earth radii and enhanced the relativistic electron fluxes by up to one order of magnitude near the slot region within about 10 h, providing strong evidence for the radial diffusion of radiation belt relativistic electrons.

  11. Survey of ELF-VLF plasma waves in outer radiation belt observed by Cluster STAFF-SA experiment

    Directory of Open Access Journals (Sweden)

    D. Pokhotelov

    2008-10-01

    Full Text Available Various types of plasma waves have profound effects on acceleration and scattering of radiation belt particles. For the purposes of radiation belt modeling it is necessary to know statistical distributions of plasma wave parameters. This paper analyzes four years of plasma wave observations in the Earth's outer radiation belt obtained by the STAFF-SA experiment on board Cluster spacecraft. Statistical distributions of spectral density of different plasma waves observed in ELF-VLF range (chorus, plasmaspheric hiss, magnetosonic waves are presented as a function of magnetospheric coordinates and geomagnetic activity indices. Comparison with other spacecraft studies supports some earlier conclusions about the distribution of chorus and hiss waves and helps to remove the long-term controversy regarding the distribution of equatorial magnetosonic waves. This study represents a step towards the development of multi-spacecraft database of plasma wave activity in radiation belts.

  12. Multiple scale music segmentation using rhythm, timbre and harmony

    DEFF Research Database (Denmark)

    Jensen, Karl Kristoffer

    2007-01-01

    The segmentation of music into intro-chorus-verse-outro, and similar segments, is a difficult topic. A method for performing automatic segmentation based on features related to rhythm, timbre, and harmony is presented, and compared, between the features and between the features and manual...... segmentation of a database of 48 songs. Standard information retrieval performance measures are used in the comparison, and it is shown that the timbre-related feature performs best....

  13. Multiple Scale Music Segmentation Using Rhythm, Timbre, and Harmony

    Science.gov (United States)

    Jensen, Kristoffer

    2006-12-01

    The segmentation of music into intro-chorus-verse-outro, and similar segments, is a difficult topic. A method for performing automatic segmentation based on features related to rhythm, timbre, and harmony is presented, and compared, between the features and between the features and manual segmentation of a database of 48 songs. Standard information retrieval performance measures are used in the comparison, and it is shown that the timbre-related feature performs best.

  14. WRITING AND READING OF TEACHERS IN TRAINING OF SCIENCE AND BIOLOGY

    OpenAIRE

    2012-01-01

    Master, may I write with my own words? What seems more a chorus of Elementary and High School students also can be heard in Higher Education classrooms, in professors training courses of Science and Biology, on disciplines for internships teachers. What provides this silencing of the textual productions of our future teachers? Which of other issues are involved in this feeling of worthlessness of writing? Starting from the initial interrogation of this summary, conducted by the students of th...

  15. The performative pleasure of imprecision: a diachronic study of entrainment in music performance

    OpenAIRE

    Andrew eGeeves; Doris Jane McIlwain; John eSutton

    2014-01-01

    This study focuses in on a moment of live performance in which the entrainment amongst a musical quartet is threatened. Entrainment is asymmetric in so far as there is an ensemble leader who improvises and expands the structure of a last chorus of a piece of music beyond the limits tacitly negotiated during prior rehearsals and performances. Despite the risk of entrainment being disturbed and performance interrupted, the other three musicians in the quartet follow the leading performer and sm...

  16. ENTERTAINMENT GENERATION

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    China has the largest population of young netizens in the world, but they turn to the Internet mostly to play games Step into any Internet cafe in China and you are bound to see this sight: rows of young faces, their eyes fixed on computer screens, earphones over their heads, their fingers moving rapidly on the keyboards. A chorus of mouse clicks provides the background music. Take a closer look and you will see guns shooting, grenades exploding, monsters

  17. Pärt: Collage sur B-A-C-H für Kammerorschester / Hans-Christian Dadelsen

    Index Scriptorium Estoniae

    Dadelsen, Hans-Christian

    1993-01-01

    Uuest heliplaadist "Pärt: Collage sur B-A-C-H für Kammerorschester, Summa (1991) für Streichorchester, Fratres, Sinfonie Nr. 2, Festina lente, Wenn Bach Bienen gezüchtet hätte, Credo für Klavier, Chor und Orchester. Philharmonia Orchestra and Chorus, Neeme Järvi". Chandos/Koch CD 9134 (WD: 63'02")

  18. The Impact of Harmful Algal Blooms on USACE Operations

    Science.gov (United States)

    2009-01-01

    recorded history around the world (Paerl 2008). Freshwater algal blooms commonly consist of many cyanobacterial algal strains, also called “blue-green...competitive edge (Huisman et al. 2005). Microcystis, a hepatotoxin created by the Microcystis algae, is most frequently cited in reports of cyanobacteria ...related poisoning in humans and livestock (Chorus and Bartram 1999) and is the dominant cyanobacteria in North America (Carmichael 2005). It is important

  19. Explaining the dynamics of the ultra-relativistic third Van Allen radiation belt

    OpenAIRE

    Mann, Ian R.; Ozeke, L. G.; Murphy, Kyle R; Clauderpierre, S. G.; Turner, D. L.; Baker, D. N.; Rae, I. J.; Kale, A; Milling, David; Boyd, A. J.; Spence, H. E.; Reeves, G. D.; H. J. Singer; Dimitrakoudis, S.; Daglis, I. A.

    2016-01-01

    Since the discovery of the Van Allen radiation belts over 50 years ago, an explanation for their complete dynamics has remained elusive. Especially challenging is understanding the recently discovered ultra-relativistic third electron radiation belt. Current theory asserts that loss in the heart of the outer belt, essential to the formation of the third belt, must be controlled by high-frequency plasma wave–particle scattering into the atmosphere, via whistler mode chorus, plasmaspheric hiss,...

  20. Music

    DEFF Research Database (Denmark)

    Lech, Marcel Lysgaard

    2017-01-01

    Old Comedy was a musical experience of great variety. Accompanied by the piper, both choruses and actors sang frequently during the performance. Music in Old comedy reflects to some extend the importance of music in Athenian everyday life, but as Greek Comedy evolved and detached it self more...... and more from the everyday topics, music similarly lost part of its importance within the plays themselves....

  1. Performance Of A Liquid Argon Time Projection Chamber Exposed To The WANF Neutrino Beam

    CERN Document Server

    Arneodo, F; Bonesini, M; Borio di Tigliole, A; Boschetti, B; Bueno, A; Calligarich, E; Casagrande, F; Cavalli, D; Cavanna, F; Cennini, P; Centro, Sandro; Cesana, E; Cline, D; Curioni, A; De Mitri, I; De Vecchi, C; Dolfini, R; Ferrari, A; Ghezzi, A; Guglielmi, A; Kisiel, J; Mannocchi, G; Martinez de la Ossa, A; Matthey, C; Mauri, F; Montanari, C; Navas, S; Negri, P; Nicoletto, Marino; Otwinowski, S; Paganoni, M; Palamara, O; Pepato, Adriano; Periale, L; Piano Mortari, G; Picchi, P; Pietropaolo, F; Puccini, A; Pullia, A; Ragazzi, S; Rancati, T; Rappoldi, A; Raselli, G L; Redaelli, N; Rondio, E; Rubbia, André; Rubbia, Carlo; Sala, P R; Sergiampietri, F; Sobczyk, J; Suzuki, S; Tabarelli de Fatis, T; Terrani, M; Terranova, F; Tonazzo, A; Ventura, Sandro; Vignoli, C; Wang, H; Zalewska A

    2006-01-01

    We present the results of the first exposure of a Liquid Argon TPC to a multi-GeV neutrino beam. The data have been collected with a 50 liters ICARUS-like chamber located between the CHORUS and NOMAD experiments at the CERN West Area Neutrino Facility (WANF). We discuss both the instrumental performance of the detector and its capability to identify and reconstruct low multiplicity neutrino interactions.

  2. JPRS Report, East Asia, Southeast Asia

    Science.gov (United States)

    2007-11-02

    drawing up plans beforehand. In conclusion, he called upon one and all to make efforts to cultivate paddy, oil- seed crops and pulses and beans for self...actions contribute to the enrichment of the big and the suffering of the many. Take mangoes . Before mangoes began joining the export chorus line... mangoes can no longer be found in fruit stalls. Like shrimps, prawns and JPRS-SEA-88-025 -25 May 1988 32 PHILIPPINES the good things we used to

  3. Nonlinear local parallel acceleration of electrons through Landau trapping by oblique whistler mode waves in the outer radiation belt

    Science.gov (United States)

    Agapitov, Oleksiy; Artemyev, Anton; Mourenas, Didier; Mozer, Forrest; Krasnoselskikh, Vladimir

    2016-04-01

    Simultaneous observations of electron velocity distributions and chorus waves by the Van Allen Probe B are analyzed to identify long-lasting (more than 6 h) signatures of electron Landau resonant interactions with oblique chorus waves in the outer radiation belt. Such Landau resonant interactions result in the trapping of ˜1-10 keV electrons and their acceleration up to 100-300 keV. This kind of process becomes important for oblique whistler mode waves having a significant electric field component along the background magnetic field. In the inhomogeneous geomagnetic field, such resonant interactions then lead to the formation of a plateau in the parallel (with respect to the geomagnetic field) velocity distribution due to trapping of electrons into the wave effective potential. We demonstrate that the electron energy corresponding to the observed plateau remains in very good agreement with the energy required for Landau resonant interaction with the simultaneously measured oblique chorus waves over 6 h and a wide range of L shells (from 4 to 6) in the outer belt. The efficient parallel acceleration modifies electron pitch angle distributions at energies ˜50-200 keV, allowing us to distinguish the energized population. The observed energy range and the density of accelerated electrons are in reasonable agreement with test particle numerical simulations.

  4. Ionosphere-magnetosphere energy interplay in the regions of diffuse aurora

    Science.gov (United States)

    Khazanov, G. V.; Glocer, A.; Sibeck, D. G.; Tripathi, A. K.; Detweiler, L. G.; Avanov, L. A.; Singhal, R. P.

    2016-07-01

    Both electron cyclotron harmonic (ECH) waves and whistler mode chorus waves resonate with electrons of the Earth's plasma sheet in the energy range from tens of eV to several keV and produce the electron diffuse aurora at ionospheric altitudes. Interaction of these superthermal electrons with the neutral atmosphere leads to the production of secondary electrons (E whistler mode chorus waves, however, can also interact with the secondary electrons that are coming from both of the magnetically conjugated ionospheres after they have been produced by initially precipitated high-energy electrons that came from the plasma sheet. After their degradation and subsequent reflection in magnetically conjugate atmospheric regions, both the secondary electrons and the precipitating electrons with high (E > 600 eV) initial energies will travel back through the loss cone, become trapped in the magnetosphere, and redistribute the energy content of the magnetosphere-ionosphere system. Thus, scattering of the secondary electrons by ECH and whistler mode chorus waves leads to an increase of the fraction of superthermal electron energy deposited into the core magnetospheric plasma.

  5. Evaluation of listener-based anuran surveys with automated audio recording devices

    Science.gov (United States)

    Shearin, A. F.; Calhoun, A.J.K.; Loftin, C.S.

    2012-01-01

    Volunteer-based audio surveys are used to document long-term trends in anuran community composition and abundance. Current sampling protocols, however, are not region- or species-specific and may not detect relatively rare or audibly cryptic species. We used automated audio recording devices to record calling anurans during 2006–2009 at wetlands in Maine, USA. We identified species calling, chorus intensity, time of day, and environmental variables when each species was calling and developed logistic and generalized mixed models to determine the time interval and environmental variables that optimize detection of each species during peak calling periods. We detected eight of nine anurans documented in Maine. Individual recordings selected from the sampling period (0.5 h past sunset to 0100 h) described in the North American Amphibian Monitoring Program (NAAMP) detected fewer species than were detected in recordings from 30 min past sunset until sunrise. Time of maximum detection of presence and full chorusing for three species (green frogs, mink frogs, pickerel frogs) occurred after the NAAMP sampling end time (0100 h). The NAAMP protocol’s sampling period may result in omissions and misclassifications of chorus sizes for certain species. These potential errors should be considered when interpreting trends generated from standardized anuran audio surveys.

  6. Banded structures in electron pitch angle diffusion coefficients from resonant wave-particle interactions

    Science.gov (United States)

    Tripathi, A. K.; Singhal, R. P.; Khazanov, G. V.; Avanov, L. A.

    2016-04-01

    Electron pitch angle (Dαα) and momentum (Dpp) diffusion coefficients have been calculated due to resonant interactions with electrostatic electron cyclotron harmonic (ECH) and whistler mode chorus waves. Calculations have been performed at two spatial locations L = 4.6 and 6.8 for electron energies ≤10 keV. Landau (n = 0) resonance and cyclotron harmonic resonances n = ±1, ±2, … ±5 have been included in the calculations. It is found that diffusion coefficient versus pitch angle (α) profiles show large dips and oscillations or banded structures. The structures are more pronounced for ECH and lower band chorus (LBC) and particularly at location 4.6. Calculations of diffusion coefficients have also been performed for individual resonances. It is noticed that the main contribution of ECH waves in pitch angle diffusion coefficient is due to resonances n = +1 and n = +2. A major contribution to momentum diffusion coefficients appears from n = +2. However, the banded structures in Dαα and Dpp coefficients appear only in the profile of diffusion coefficients for n = +2. The contribution of other resonances to diffusion coefficients is found to be, in general, quite small or even negligible. For LBC and upper band chorus waves, the banded structures appear only in Landau resonance. The Dpp diffusion coefficient for ECH waves is one to two orders smaller than Dαα coefficients. For chorus waves, Dpp coefficients are about an order of magnitude smaller than Dαα coefficients for the case n ≠ 0. In case of Landau resonance, the values of Dpp coefficient are generally larger than the values of Dαα coefficients particularly at lower energies. As an aid to the interpretation of results, we have also determined the resonant frequencies. For ECH waves, resonant frequencies have been estimated for wave normal angle 89° and harmonic resonances n = +1, +2, and +3, whereas for whistler mode waves, the frequencies have been calculated for angle 10° and Landau

  7. Alcohol consumption and the risk of renal cancers in the European Prospective Investigation into Cancer and Nutrition (EPIC). Wozniak MB, Brennan P, Brenner DR, Overvad K, Olsen A, Tjønneland A, Boutron-Ruault MC, Clavel-Chapelon F, Fagherazzi G, Katzke V, Kühn T, Boeing H, Bergmann MM, Steffen A, Naska A, Trichopoulou A, Trichopoulos D, Saieva C, Grioni S, Panico S, Tumino R, Vineis P, Bueno-de-Mesquita HB, Peeters PH, Hjartåker A, Weiderpass E, Arriola L, Molina-Montes E, Duell EJ, Santiuste C, Alonso de la Torre R, Barricarte Gurrea A, Stocks T, Johansson M, Ljungberg B, Wareham N, Khaw KT, Travis RC, Cross AJ, Murphy N, Riboli E, Scelo G.Int J Cancer. 2015 Oct 15;137(8):1953-66. [Epub 2015 Apr 28]. doi: 10.1002/ijc.29559.

    Science.gov (United States)

    Jay, Raman; Brennan, P; Brenner; Overvad, K; Olsen, A; Tjønneland, A; Boutron-Ruault, M C; Clavel-Chapelon, F; Fagherazzi; Katzke, V; Kühn, T; Boeing, H; Bergmann, M M; Steffen, A; Naska, A; Trichopoulou, A; Trichopoulos, D; Saieva, C; Grioni, S; Panico, S; Tumino, R; Vineis, P; Bueno-de-Mesquita, H B; Peeters, P H; Hjartåker, A; Weiderpass, E; Arriola, L; Molina-Montes, E; Duell, E J; Santiuste, C; Alonso de la Torre, R; Barricarte Gurrea, A; Stocks, T; Johansson, M; Ljungberg, B; Wareham, N; Khaw, K T; Travis, R C; Cross, A J; Murphy, N; Riboli, E; Scelo, G

    2017-03-01

    Epidemiologic studies have reported that moderate alcohol consumption is inversely associated with the risk of renal cancer. However, there is no information available on the associations in renal cancer subsites. From 1992 to 2010, 477,325 men and women in the European Prospective Investigation into Cancer and Nutrition cohort were followed for incident renal cancers (n = 931). Baseline and lifetime alcohol consumption was assessed by country-specific, validated dietary questionnaires. Information on past alcohol consumption was collected by lifestyle questionnaires. Hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated from Cox proportional hazard models. In multivariate analysis, total alcohol consumption at baseline was inversely associated with renal cancer; the HR and 95% CI for the increasing categories of total alcohol consumption at recruitment vs. the light drinkers category were 0.78 (0.62-0.99), 0.82 (0.64-1.04), 0.70 (0.55-0.90), and 0.91 (0.63-1.30), respectively, (ptrend = 0.001). A similar relationship was observed for average lifetime alcohol consumption and for all renal cancer subsites combined or for renal parenchyma subsite. The trend was not observed in hypertensive individuals and not significant in smokers. In conclusion, moderate alcohol consumption was associated with a decreased risk of renal cancer.

  8. АНАЛИЗ ИЗОБРАЖЕНИЯ ЛАГЕНАРИИ (LAGENARIA SICERARIA (MOLINA) STANDL.) В ЖИВОПИСИ КАК ИСТОЧНИК ИНФОРМАЦИИ ДЛЯ ИСТОРИИ ИНТРОДУКЦИИ И АРХЕОГЕНЕТИКИ КУЛЬТУРЫ

    OpenAIRE

    Цаценко, Людмила

    2013-01-01

    The issues of international spread of fruits of long gourd lagenaria and the introduction of it in culture are considered in the article. We have shown how to use it as a vegetable crop and considered varietal diversity of this species. The biological characteristics of lagenaria cultivation as vegetable plants, including peculiarities of the reproductive system have been marked. We have also considered the issues of cultivation and distribution of long gourd lagenaria (zycca) for food

  9. Simulación del secado de cebolla blanca (Allium cepa) por flujo de aire caliente y evaluación en la pérdida de su pungencia

    OpenAIRE

    Vargas Delgado, Luis Fernando

    1996-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Tecnología de Alimentos En el presente trabajo de investigación se desarrollaron dos metodologías matemáticas capaces de describir las curvas típicas del proceso de secado de alimentos: la metodología de Alvarez y Legues modificada, y la metodología de diferencias finitas. Estas metodologías fueron producto de un análisis físico y matemático del proceso difusivo no lineal del agua durante el secado, y fueron transcrit...

  10. Informe científico de investigador: Martino, Pablo Eduardo (2012-2013)

    OpenAIRE

    Martino, Pablo Eduardo

    2013-01-01

    Durante este período de estudio, se publicaron, finalmente, las observaciones acerca de los estudios parasitológicos en nutrias salvajes capturadas en la provincia de Buenos Aires, describiendo las frecuencias moderadas de 18 especies de endoparásitos (Nematoda 82.0%, Protozoa 46.1%, Trematoda 33.3% y Cestoda 12.8%) (Note on the occurrence of parasites of the wild nutria (Myocastor coypus, Molina, 1782) Helminthologia, 49, 3: 164 – 168, 2012), así como también los resultados del perfil hemato...

  11. A Case of Expert-Novice Conversational Reflection During an Initial Education Practicum on the CLIL Approach

    OpenAIRE

    Escobar Urmeneta, Cristina; Evnitskaya, Natalia; Horrillo Godino, Zoraida

    2009-01-01

    III Colloquium on Semi-Immersion in Catalonia III Encuentro sobre Semi-Inmersión en Cataluña In nearly all pre-service teacher education programmes, the most common model of professionalization consists in providing student-teachers with opportunities to apply knowledge gained in a theoretical phase in a systematic, structured and supervised way (Molina Ruiz 2008) during the practicum period, in accordance with the principles of Technical Rationality (Schön 1983). Schön identifies gaps ...

  12. Purificação de saponinas de extratos de quilaia usando fracionamento em coluna de espuma

    OpenAIRE

    Lidia Oazem de Oliveira da Costa

    1999-01-01

    Resumo: As saponinas de quilaia tem utilização como aditivos na indústria de alimentos e de fármacos principalmente como potencializadores de vacinas. A viabilidade técnica do uso de extratos contendo quillaja saponaria molina como princípio ativo na redução do teor de colesterol do óleo de manteiga já foi demonstrada em pesquisas na Faculdade de Engenharia Química e Faculdade de Engenharia de Alimentos na UNICAMP. Os extratos de quilaia disponíveis tem variado grau de purificação contendo ta...

  13. V Actas Congreso. Poder, poderes y empoderamiento… ¿Y el amor? ¡Ah, el amor!

    OpenAIRE

    Gil Gómez, Alicia; Escrig Gil, Gemma; Forcada Martínez, Águeda

    2009-01-01

    ÍNDICE: Presentación,BEATRIZ MOLINA GABRIEL Y GALÁN. I. CONFERENCIAS. ¿Es la explotación sólo algo malo o… qué tipo de poder es el poder del amor?,ANNA JÓNASDÓTTIR. Una experiencia en el poder ,SOLEDAD MURILLO DE LA VEGA. II. MESAS REDONDAS. MESA 1. Sentimientos, educación, amor y sexo Del mito del amor romántico a la construcción de relaciones amorosas entre iguales: una mirada feminista ,NIEVES SIMÓN RODRÍGUEZ. El cuerpo en la educación afectivo-sexual ,MATILDE FO...

  14. La traducción y los textos bilingües (japonés-inglés) para estudiantes de japonés : análisis de las antologías de relatos cortos y de las revistas de idioma

    OpenAIRE

    Miyagi, Shiho

    2013-01-01

    El treball estudia els dos tipus de textos bilingües japonès-anglès (llibres i revistes) que existeixen per a estudiants de japonès. La primera part analitza quatre antologies des de la perspectiva de la paratextualitat i de la teoria funcionalista de Christiane Nord (1997). A continuació, s'estudien les tècniques de traducció, a partir dels desenvolupaments teòrics d'Amparo Hurtado i Lucía Molina (2002), en el conte «The Third Night» de Natsume Sôseki. A la segona part s'investiguen dues rev...

  15. Predicción de la comprensión lectora

    Directory of Open Access Journals (Sweden)

    Anunciación QUINTERO GALLEGO

    2009-11-01

    Full Text Available A pesar de los numerosos estudios realizados en torno al análisis de los componentes básicos de la lectura, no parece haberse llegado aún, dada la complejidad del tema, a conclusiones definitivas; ya que la gran mayoría de las investigaciones empíricas y experimentales realizadas al respecto, se limitan a establecer la correlación entre los aspectos medidos por determinados tests y el rendimiento en lectura, siendo escasas, sin embargo, las destinadas a comprobar la estructura interna de los factores madurativos supuestamente implicados en el aprendizaje lector (Molina, 1983.

  16. La importancia de las ideologías de los partidos políticos en la propaganda electoral

    OpenAIRE

    2000-01-01

    Este artículo analiza la importancia del marketirzgen la comunicación política visto como un hipercódigo: "Por hipercódigo entendemos un código que opera sobre otro, y sólo así, es decir, que se monta en otro y lo usa. Al hacerlo anula la potencialidad discursiva del último" (Molina y Vedia, 1999: 200). Considerado de esta forma, el hipercódigo del marketingirnpone su propia lógica al código político, se abandona la perspectiva política para buscar las aspiraciones y deseos de ...

  17. Pioneers in ozone research receive Nobel Prize in chemistry

    Science.gov (United States)

    The Royal Swedish Academy of Sciences has awarded its 1995 Nobel Prize in chemistry to three AGU members for their work in atmospheric chemistry, particularly concerning the formation and decomposition of ozone. Only one other Nobel prize has ever been awarded in the realm of atmospheric research. The honorees are professors Paul Crutzen of the Max-Planck Institute for Chemistry in Mainz, Germany; Mario Molina of the Massachusetts Institute of Technology; and F. Sherwood Rowland of the University of California, Irvine. The Academy credits the three with contributing to “our salvation from a global environmental problem that could have catastrophic consequences.”

  18. Reciclaje de lodos residuales de la industria del papel mediante lombricultura utilizando la especie “lombriz roja californiana” Eisenia foetida”

    OpenAIRE

    Juárez Uribe, Raquel Angélica

    2010-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Ciencias Ambientales El alto consumo y producción de papel, a través de sus diferentes presentaciones, genera grandes cantidades de lodos residuales en las plantas fabricantes ocasionando riesgos ambientales, si no se les da un manejo y aprovechamiento apropiado. Una alternativa de solución a este problema, es el reciclaje de estos lodos residuales para producir abono orgánico, a través de un proceso de lombricultura....

  19. Efecto de la aplicación directa e indirecta de azufre en los cultivos de cebolla y papa bajo condiciones de campo e invernadero.

    OpenAIRE

    Tello Peramas, Lilly Denise

    1999-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Suelos El trabajo se realizo a nivel de laboratorio en el Laboratorio de Fertilidad de Suelos de la UNALM y los experimentos de campo en el departamento de Arequipa en las localidades de Bajo Cural y Revuelta-Perdida-Vitor-Cailloma. En los experimentos de invernadero se evaluó el efecto de la fertilización con azufre en forma directa e indirecta en 26 tratamientos con 3 repeticiones; estos tratamientos se realizaron s...

  20. Interference management in LTE-based HetNets: a practical approach

    OpenAIRE

    Font Bach, Oriol; Bartzoudis, Nikolaos; Pascual Iserte, Antonio; Payaró Llisterri, Miquel; Blanco, Luis; López Bueno, David; Molina Pena, Marc

    2015-01-01

    This is the peer reviewed version of the following article: [Font-Bach, O., Bartzoudis N., Pascual-Iserte, A., Payaró M., Blanco L., López Bueno D., and Molina M. (2015) Interference management in LTE-based HetNets: a practical approach, Trans. Emerging Tel. Tech., 26, 195–215, doi: 10.1002/ett.2833.], which has been published in final form at [http://onlinelibrary.wiley.com/doi/10.1002/ett.2833/epdf]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Con...

  1. Estudio de la deposición de catalizadores de hierro sobre las paredes de un reactor tubular para degradación de fármacos mediante procesos foto- fenton heterogéneos

    OpenAIRE

    Herranz Sánchez, Laura

    2011-01-01

    Proyecto Fin de Carrera leído en la Universidad Rey Juan Carlos en el curso académico 2010/2011. Directores del Proyecto: Raúl Molina Gil y Yolanda Segura Urraca El presente proyecto se engloba dentro de una línea de investigación del grupo de Ingeniería Química y Ambiental de la URJC, dedicada al estudio de tratamientos avanzados para eliminar contaminantes emergentes en aguas residuales. Los fármacos constituyen un grupo de compuestos con gran peligro potencial cuando llegan al medio ...

  2. Fluctuación poblacional de los principales insectos fitófagos y sus enemigos naturales en el cultivo de alcachofa en el valle de Ica

    OpenAIRE

    Mamani Gutierrez, Dina Beatriz

    2009-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Manejo Integrado de Plagas El trabajo de investigación se desarrolló en el distrito de Santiago, departamento de Ica, en el cultivo de alcachofa cultivar “Lorca”, con el objetivo de determinar la fluctuación poblacional de los principales insectos fitófagos y sus enemigos naturales. Agrotis ipsilon (Hufnagel), Elasmopalpus lignosellus (Zeller) y Pseudoplusia includens (Walker) se presentaron en bajas poblaciones princ...

  3. O estudante endiabrado: representação do mito de Dom Juan em espronceda

    OpenAIRE

    Pandolfi, Maira Angélica [UNESP

    2011-01-01

    The present study is a reflection on the representation of the literary myth of Dom Juan in the work El estudiante de Salamanca (1836-1840), by Joseph de Espronceda. It highlights the most significant aspects of their recreation donjuanesca, since the classic elements taken from the founding work of Tirso de Molina to Romantic Titan which characterizes Dom Félix de Montemar. O presente estudo faz uma reflexão sobre a representação do mito literário de Dom Juan na obra El estudiante de Sala...

  4. Comparación de las características físicas de las fibras de la llama ch´aku (Lama glama) y la alpaca Huacaya (Lama pacos) del centro experimental Quimsachata del INIA – Puno

    OpenAIRE

    2009-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Producción Animal Los objetivos fueron evaluar los efectos de especie y sexo sobre las características físicas de las fibras de llama Ch´aku y alpaca Huacaya de un año de edad, del Centro Experimental Quimsachata del INIA – Puno y determinar las correlaciones de las principales características. Las muestras de fibra se obtuvieron del C.E. Quimsachata del INIA, ubicada en distrito de Santa Lucia (Puno-Perú); y fueron a...

  5. Utilización de proteina de soya y carragenina en salchichas tipo Huacho con bajo tenor graso

    OpenAIRE

    Salvá Ruiz, Bettit Karim

    2008-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Tecnología de Alimentos El presente trabajo de investigación consistió en determinar la influencia de la sustitución de grasa por la adición de hidrocoloides (proteina texturizada de soya, carragenina, concentrado funcional de soya), pellejo de cerdo y combinaciones de estas en las características de la salchicha tipo Huacho. Se emplearon concentraciones de 20, 30, 40 y 50% de proteína texturizada de soya, para reduci...

  6. Arquitectura doméstica en la Granada Moderna

    OpenAIRE

    2009-01-01

    Rafael López Guzmán (coordinación científica); José Policarpo Cruz Cabrera, María Elena Díez Jorge, Esther Galera Mendoza, Amalia García Pedraza, Lourdes Gutiérrez Carrillo, Juan Manuel Martín García (investigadores); José Castillo Ruiz, Elisa Entrena Núñez, Gabriel Fernández Adarve, Miguel Ángel Sorroche Cuerva, Iván Ruiz Laguna, Alejandro Pérez Ordóñez, Aurora Molina Fajardo, Cristina Ruiz de la Fuente Serrano (colaboradores).

  7. RESEARCH UPDATES

    OpenAIRE

    Anonymous

    1988-01-01

    The Importance of Product/Consumer Attributes In Consumer Buying Decisions, by S.M. Fletcher, T.T. Fu, A.V.A. Resurreccion; Supermarket Produce Demand and Shelf Space Effects, by John J. VanSickle, German Molina; Package Size Preference for Meat and Poultry Products As Related to Demographic Characteristics, by Tami J. Gundry, J. Richard Bacon, U.C. Toensmeyer, R. Dean Shippy; Merrimack College to Offer Certificate Program In Food Retail Management, by James J. Corbett; Changes During Freezin...

  8. Visualization data on the freezing process of micrometer-scaled aqueous citric acid drops

    Directory of Open Access Journals (Sweden)

    Anatoli Bogdan

    2017-02-01

    Full Text Available The visualization data (8 movies presented in this article are related to the research article entitled “Freezing and glass transitions upon cooling and warming and ice/freeze-concentration-solution morphology of emulsified aqueous citric acid” (A. Bogdan, M.J. Molina, H. Tenhu, 2016 [1]. The movies recorded in-situ with optical cryo-miscroscopy (OC-M demonstrate for the first time freezing processes that occur during the cooling and subsequent warming of emulsified micrometer-scaled aqueous citric acid (CA drops. The movies are made publicly available to enable critical or extended analyzes.

  9. Temporal evolution of adherents of the major religions in Mexico: Avrami model application-Kolgomorov solid training

    CERN Document Server

    Avilés, Mauricio González

    2013-01-01

    It applies a mathematical model of solid formation, the model of Avrami-Kolgomorov [Ausloos & Petroni, 2007] to model the time evolution of percentage of adherents of the major religions practiced in Mexico, adjusting the corresponding parameters with available records in the period from 1950 to 2000 [Molina-Hernandez, 2003; INEGI, 2005]. A comparison is made with the application of the model to global trends and concludes that Catholicism is in a marked disaggregation and trends of Christianity in Mexico are similar to global.

  10. Mammal prey of the Barn Owl (Tyto alba) in Parque Luro Reserve, La Pampa, Argentina

    OpenAIRE

    1994-01-01

    Abstract The diet of the barn owl was studied through the analysis of pellets obtained in various sites within the Parque Luro reserve, located in an area of xerophyte Caldén forests. The study of 1241 prey items revealed a high dominance of the cricetid rodents Calomys sp., Akodon molinae and Eligmodontia typus, followed by other 8 species of rodents, one species of marsupial and undetermined birds a...

  11. Orígenes de la Asociación Médica de Chile: una mirada crítica

    OpenAIRE

    Molina Bustos, Carlos

    2012-01-01

    Los orígenes de la institucionalidad sanitaria en Chile y los intensos debates que se dieron al interior del gremio médico, constituyen el núcleo central del texto de Carlos Molina. El autor nos ofrece un análisis crítico sobre las contradicciones de una profesión a la que comenzaba a cuestionarse el papel social en una época de profundos cambios sociales y debacle económica. Los médicos, como una élite profesional e intelectual, no pudieron mantenerse al margen de las luchas políticas, y deb...

  12. Efecto de la aplicación de materia orgánica y enmienda cálcica sobre el contenido de boro en el suelo de la costa sur

    OpenAIRE

    1998-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Suelos En el presente trabajo se determina la concentración de boro soluble luego del lavado del suelo; el efecto de la aplicación de materia orgánica y una enmienda cálcica sobre el contenido de boro disponible del suelo y de la planta y el efecto del boro presente en el agua de riego. Se concluye que por efecto del lavado inicial del suelo, se disminuyó la concentración de boro soluble de 61 a 20.9 ppm. La materia o...

  13. Experiences in WWTP of the effects of co-digestion of substrates on the biogas production; Experiencia en EDAR de la codigestion de sustratos sobre la produccion de biogas

    Energy Technology Data Exchange (ETDEWEB)

    Morenilla, J. J.; Bernacer, I.; Martinez, F.; Jardin, C.; Simon, P.; Ruiz, L.; Pradas, P.; Pastor, L.

    2010-07-01

    The use of co-digestion in wastewater treatment plants (WWTP) offers the possibility of treating sludge in conjunction with other substrates from different sources (agricultural or agroindustrial residues, etc.)to offset the balance of nutrients and moisture, increasing significantly biogas production of the process. Pobla de Farnals (Valencia) WWTP and Molina de Segura (Murcia) WWTP have introduced landfill leachate of municipal solid waste (MSW) in the anaerobic digestion, resulting in an increase of the biogas production. the additions started with punctual discharges of small amounts of leachate, and later, the frequency and volume of the discharges increased depending on the results. (Author) 17 refs.

  14. Evaluación de la calidad de servicio de centros deportivos privados. Influencia de la gestión en el bienestar de los usuarios

    OpenAIRE

    Molina García, Nuria

    2016-01-01

    Titulo de tesis doctoral: Evaluación de la calidad de servicio de centros deportivos privados. Influencia de la gestión en el bienestar de los usuarios Presentada por: Dña. Nuria Molina García Dirigida por: Dr. D. Ferran Calabuig Moreno y Dr. D. Josep Crespo Hervàs TEMA: En tema o idea principal de este trabajo es conocer la realidad sobre la opinión de los usuarios de tres centros deportivos privados de la provincia de Alicante sobre dos temáticas principales, la calidad perci...

  15. Variación anual de las propiedades insecticidas de Peumus boldus sobre Sitophilus zeamais

    OpenAIRE

    Pérez, F.; Silva, G.; De Tapia, M; Hepp, R

    2008-01-01

    El objetivo del presente trabajo fue determinar la variación anual en las propiedades insecticidas de Peumus boldus Molina, en el control de Sitophilus zeamais Motschulsky, bajo condiciones de laboratorio. El polvo de hojas de P. boldus se evaluó durante 12 meses, en concentraciones de 0,5, 1 y 2% (p/p). Se evaluaron 36 tratamientos con tres repeticiones, en un diseño experimental completamente al azar, con un arreglo factorial. Se determinó el porcentaje de mortalidad y emergencia de insecto...

  16. El mundo del libro : febrero de 1969

    Directory of Open Access Journals (Sweden)

    Agustín Rodríguez Garavito

    1969-02-01

    Full Text Available El documento presenta las reseñas de los siguientes títulos: REMANSOS DE LUZ- (Poemas. Por Amadeo Pérez Pérez-Medellín. Colombia. GRAGEAS PARA EL TEDIO- Crispín-Por Pedro Nel Duque-63 páginas. Bogotá, Colombia. CAMBIO DE LUNA-Cuentos-Por Eutiquio Leal- Bogotá, Colombia. JOSE EUSTASIO RIVERA- Por Luis Carlos Herrera Molina, S. J.-Instituto Caro y Cuervo. Bogotá. SECRETOS EN FUGA- Poesía-Por Luis Beltrán Guerrero-Caracas, Venezuela.

  17. On a Generalized $*$-Product for Copulas

    CERN Document Server

    Ruankong, Pongpol

    2012-01-01

    This paper focuses on a generalization of the *-product called $\\mathbf{C}$-product. This product, first introduced by Durante, Klement and Quesada-Molina, was used to characterize classes of compatible copulas. The $\\mathbf{C}$-product of copulas $A$ and $B$ is defined to be an integral of a function which involves the copulas $A$ and $B$ and the family of copulas $\\mathbf{C}$. However, measurability of the integrand in the definition is questionable. We will discuss this in details and attempt to re-define the product. Then we derive some properties of the re-defined product.

  18. Evaluación de la toxicidad a dosis repetidas (90 días) por vía oral del concentrado de proteína de pota (Dosidicus gigas), en ratas Sprague dawley

    OpenAIRE

    2009-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Tecnología de Alimentos El potencial tóxico de un concentrado de proteína de calamar gigante (Dosidicus gigas) fue evaluado mediante el estudio de toxicidad de dosis repetidas a 90 días en ratas Sprague Dawley de ambos sexos. Los métodos empleados fueron los descritos por las normas OECD (1998). Se administró por vía oral la dosis de 500, 1000 y 2000 mg/kg/día durante 13 semanas. Se evaluaron los signos tóxicos y peso...

  19. Estudio Técnico Económico de las instalaciones (CT, BT y PCI) destinadas a una nave industrial destinada a la fabricación de muebles de madera, sita en el término municipal de Beneixama (Alicante).

    OpenAIRE

    JUAN MOLINA, JOSÉ LUIS

    2016-01-01

    [EN] Design of facilities necessary power supply and fire protection of wooden furniture factory [ES] Diseño de las instalaciones necesarias de suministro de energía eléctrica y protección contra incendios de una fábrica de muebles de madera Juan Molina, JL. (2016). Estudio Técnico Económico de las instalaciones (CT, BT y PCI) destinadas a una nave industrial destinada a la fabricación de muebles de madera, sita en el término municipal de Beneixama (Alicante). http://hdl.handle.net/10...

  20. Comentario del libro: “Costa Rica. 1800-1850: El legado colonial y la génesis del capitalismo, de Iván Molina”

    OpenAIRE

    Gudmundson K, Lowell

    2012-01-01

    IntroducciónEn éste, el cuarto de dieciseis volúmenes de la serie patrocianda por el Centro de Investigaciones Históricas de la Universidad de Costa Rica, Molina intenta al menos resumir los resultados de una gran variedad de investigaciones históricas recientes. El autor se destaca tanto por una prosa atractiva, como por un enfoque que no se reduce al esquema "café-capitalismo-sociedad" característico de anteriores estudios suyos. Es más, si hay una sorpresa agradable en esta obra, está en e...

  1. The Ozone Hole -- a Mystery Reborn?

    Science.gov (United States)

    von Hobe, M.; Grooß, J.; Müller, R.; Stroh, F.

    2007-12-01

    In 1985, Farman et al. discovered the near complete disappearance of the stratospheric ozone layer over Antarctica in spring. This 'Ozone Hole' took the atmospheric research community by surprise as it could not be explained by the known catalytic cycles removing ozone in the stratosphere. McElroy et al. (1986) and Molina and Molina (1987) seemed to have solved the enigma by proposing two new catalytic cycles -- the ClO-BrO-cycle and the ClO dimer cycle -- that could rapidly destroy ozone at cold temperatures and high zenith angles. Subsequent work describing the kinetics of these cycles as well as stratospheric observations of chlorine and bromine compounds supported their theory and led to atmospheric chemistry models reproducing observed ozone loss reasonably well. Today, more than 20 years after the discovery of the ozone hole and the ratification of the Montreal Protocol, a new laboratory study (Pope et al., 2007) -- suggesting much smaller absorption cross sections and hence photolysis rates of the ClO dimer -- seriously calls into question our understanding of how ozone is destroyed in the spring polar stratosphere. With the new cross sections, both the dimer cycle and the ClO-BrO-cycle run much slower, and observations of neither chlorine compounds nor ozone loss are reproduced by model simulations (von Hobe et al., 2007): the known catalytic cycles cannot cause an ozone hole. Obviously, this also calls into question our ability to predict future polar ozone depletion. In search for an explanation, we discuss possible shortcomings of the Pope et al. experiment that could lead to an underestimation of the dimer absorption and examine various new chemical processes for their likelihood to influence chlorine partitioning and cause significant ozone loss in the atmosphere and at the same time go undetected in laboratory based kinetic studies. A strategy is presented for designing the tests needed to unambiguously confirm or rule out proposed solutions to the

  2. Comentario del libro “Urnas de lo inesperado, Fraude electoral y lucha política en Costa Rica (1901 – 1948)

    OpenAIRE

    Alvarenga Venutolo, Patricia

    2001-01-01

    Introducción Este libro de Iván Molina y Fabrice Lehoucq representa un importante aporte a la historia política relegada a un segundo plano desde por lo menos la década de 1970, cuando la renovación de nuestra disciplina se orientó a la historia social y económica. En los últimos años se ha empezado a remozar la historia política utilizando novedosas estrategias teóricas y metodológicas que permiten analizar los procesos políticos desde la perspectiva cultural…

  3. Genotype by Environment Effects on Potato Mini-Tuber Seed Production in an Aeroponics System

    OpenAIRE

    Julián F. Mateus-Rodriguez; Stef de Haan; Alfredo Rodríguez-Delfín

    2014-01-01

    In order to evaluate the environmental effect on plant development and mini-tuber production of a diverse group of potato genotypes grown under an aeroponic system, a G × E interaction experiment was carried out in greenhouses located at CIP’s experimental stations in La Molina (Lima) and Huancayo (Junín). Five contrasting environments were set-up and evaluated. A combined Analysis of Variance was performed for the variables “days to tuber set”, “days to senescence” and “plant height”. An Ad...

  4. Nuevas Orientaciones en Torno a la Atribucion de el Condenado Por Desconfiado

    OpenAIRE

    Rodríguez López-Vázquez,Alfredo

    1997-01-01

    El condenado por desconfiado es una obra que plantea muchos problemas de atribución a la autoría rutinaria de Tirso de Molina. Se han puesto otros nombres, y se han planteado diferentes métodos y y procedimientos para abordar el estudio de la atribución de esta obra. Se amplían aquí los argumentos expuestos en favor de la autoría de Andrés de Claramonte con un repaso al estado de la cuestión y varios análisis estadísticos sobre la frecuencia de las asonancias en los romances.

  5. Relativistic electron acceleration during HILDCAA events: are precursor CIR magnetic storms important?

    Science.gov (United States)

    Hajra, Rajkumar; Tsurutani, Bruce T.; Echer, Ezequiel; Gonzalez, Walter D.; Brum, Christiano Garnett Marques; Vieira, Luis Eduardo Antunes; Santolik, Ondrej

    2015-07-01

    We present a comparative study of high-intensity long-duration continuous AE activity (HILDCAA) events, both isolated and those occurring in the "recovery phase" of geomagnetic storms induced by corotating interaction regions (CIRs). The aim of this study is to determine the difference, if any, in relativistic electron acceleration and magnetospheric energy deposition. All HILDCAA events in solar cycle 23 (from 1995 through 2008) are used in this study. Isolated HILDCAA events are characterized by enhanced fluxes of relativistic electrons compared to the pre-event flux levels. CIR magnetic storms followed by HILDCAA events show almost the same relativistic electron signatures. Cluster 1 spacecraft showed the presence of intense whistler-mode chorus waves in the outer magnetosphere during all HILDCAA intervals (when Cluster data were available). The storm-related HILDCAA events are characterized by slightly lower solar wind input energy and larger magnetospheric/ionospheric dissipation energy compared with the isolated events. A quantitative assessment shows that the mean ring current dissipation is ~34 % higher for the storm-related events relative to the isolated events, whereas Joule heating and auroral precipitation display no (statistically) distinguishable differences. On the average, the isolated events are found to be comparatively weaker and shorter than the storm-related events, although the geomagnetic characteristics of both classes of events bear no statistically significant difference. It is concluded that the CIR storms preceding the HILDCAAs have little to do with the acceleration of relativistic electrons. Our hypothesis is that ~10-100-keV electrons are sporadically injected into the magnetosphere during HILDCAA events, the anisotropic electrons continuously generate electromagnetic chorus plasma waves, and the chorus then continuously accelerates the high-energy portion of this electron spectrum to MeV energies.

  6. Relativistic radiation belt electron responses to GEM magnetic storms: Comparison of CRRES observations with 3-D VERB simulations

    Science.gov (United States)

    Kim, Kyung-Chan; Shprits, Yuri; Subbotin, Dmitriy; Ni, Binbin

    2012-08-01

    Understanding the dynamics of relativistic electron acceleration, loss, and transport in the Earth's radiation belt during magnetic storms is a challenging task. The U.S. National Science Foundation's Geospace Environment Modeling (GEM) has identified five magnetic storms for in-depth study that occurred during the second half of the Combined Release and Radiation Effects Satellite (CRRES) mission in the year 1991. In this study, we show the responses of relativistic radiation belt electrons to the magnetic storms by comparing the time-dependent 3-D Versatile Electron Radiation Belt (VERB) simulations with the CRRES MEA 1 MeV electron observations in order to investigate the relative roles of the competing effects of previously proposed scattering mechanisms at different storm phases, as well as to examine the extent to which the simulations can reproduce observations. The major scattering processes in our model are radial transport due to Ultra Low Frequency (ULF) electromagnetic fluctuations, pitch angle and energy diffusion including mixed diffusion by whistler mode chorus waves outside the plasmasphere, and pitch angle scattering by plasmaspheric hiss inside the plasmasphere. The 3-D VERB simulations show that during the storm main phase and early recovery phase the estimated plasmapause is located deep in the inner region, indicating that pitch angle scattering by chorus waves can be a dominant loss process in the outer belt. We have also confirmed the important role played by mixed energy-pitch angle diffusion by chorus waves, which tends to reduce the fluxes enhanced by local acceleration, resulting in comparable levels of computed and measured fluxes. However, we cannot reproduce the more pronounced flux dropout near the boundary of our simulations during the main phase, which indicates that non-adiabatic losses may extend toL-shells lower than our simulation boundary. We also provide a detailed description of simulations for each of the GEM storm events.

  7. Peut-on penser le travail par le don ? Débat avec la rédaction de la Nouvelle Revue du Travail Conceptualising work as a gift? Debate with editors of the Nouvelle Revue du Travail ¿Es posible pensar el trabajo a través del don? Debate con el comité de redacción de la Nouvelle Revue du Travail

    Directory of Open Access Journals (Sweden)

    Alain Caillé

    2012-12-01

    Full Text Available Dans un échange avec la Nouvelle Revue du Travail, Alain Caillé et Norbert Alter soutiennent leur lecture maussienne des réalités contemporaines du travail en discutant les questions centrales du capitalisme, du salariat, de l’entreprise et du travail sociologique. Cet échange fait suite aux contributions d’Alain Caillé et Norbert Alter dans ce Chorus « Peut-on penser le travail par le don ? De la mise en œuvre du paradigme du don contre-don en sociologie du travail. »In an exchange with the Nouvelle Revue du Travail, Alain Caillé and Norbert Alter pursue their Maussian analysis of the reality of contemporary work by discussing questions that are central to capitalism, wage-earning, enterprise and the sociology of work. This follows their contribution to this issue of Chorus entitled “Conceptualising work as a gift: Implementing the gift/counter-gift paradigm in the sociology of work” (Peut-on penser le travail par le don? De la mise en œuvre du paradigme du don contre-don en sociologie du travail.En el marco de un debate con la Nouvelle Revue du Travail, Alain Caillé y Norbert Alter apoyan su lectura maussiana de las realidades contemporáneas del trabajo en una discusión de los aspectos centrales del capitalismo, del trabajo asalariado, de la empresa y del trabajo sociológico. Ese debate se suscitó a partir de las contribuciones de Alain Caillé y Norbert Alter en este Chorus: “¿Es posible pensar el trabajo a través del don? Acerca de la aplicación del paradigma del don-contradon en sociología del trabajo”.

  8. Predation by Rattus norvegicus on a native small mammal in an Araucaria araucana forest of Neuquén, Argentina La depredación en pequeños mamíferos nativos por Rattus norvegicus en un bosque de Araucaria araucana en Neuquén, Argentina

    Directory of Open Access Journals (Sweden)

    JOHN D SHEPHERD

    2012-06-01

    Full Text Available Few previous studies document Rattus predation as a mechanism of impact on native small mammals. In a mixed Araucaria araucana (Molina Koch -Nothofagus forest in Parque Nacional Lanín in southwestern Neuquén Province, Argentina, we discovered the remains of long-clawed mice, Chelemys macronyx Thomas, cached in a burrow of Rattus norvegicus Berkenhout. We discuss this evidence of predation in light of Rattus biology and invasion ecology. Predation on native small mammals by invasive rats is easily underestimated or overlooked and deserves more careful attention.Pocos estudios anteriores documentan predación por Rattus como mecanismo de impacto sobre los mamíferos pequenos nativos. En un bosque mixto de Araucaria araucana (Molina Koch -Nothofagus de Parque Nacional Lanín al suroeste de la provincia del Neuquén, Argentina, encontramos los cadáveres del ratón topo grande, Chelemys macronyx Thomas, almacenados en una cueva de la rata noruega, Rattus norvegicus Berkenhout. Discutimos esta evidencia de la depredación a la luz de la biología de Rattus y la ecología de invasión. La depredación en pequenos mamíferos nativos por las ratas invasoras está fácilmente subestimada o pasada por alto. Este tema merece una atención más cuidadosa.

  9. 2 obras de Barba Corsini, España

    Directory of Open Access Journals (Sweden)

    Barba Corsini, F. J.

    1969-02-01

    Full Text Available Chalet at Vallvidrera This is a beautiful house, specially adapted to the requirements of the owners (a couple with three children and servants. It has three storeys, facing the mountains. Since the location of this house is close to Barcelona, on the southwest slopes of the Tibidabo mountain, it has been selected by many Barcelona families as their permanent residence. Apartments building at La Molina This building in the Alpine style is well and flexibly adapted to the mountain slope. It has eleven storeys within four separate blocks at different levels, which, together with the internal fitting and design, make this a most exclusive and singular mountain hotel.Chalet en Vallvidrera Se trata de una bonita residencia, perfectamente adaptada a sus usuarios —un matrimonio con tres hijos y servicio—, distribuida en tres plantas y mirando hacia la montaña. Dada la proximidad a Barcelona del pequeño pueblo, situado en la ladera suroeste del Tibidabo, muchos barceloneses lo han elegido para residencia permanente. Edificio de apartamentos en La Molina Esta construcción, de un gran carácter alpino, se adapta flexiblemente al ritmo de la pendiente, con sus once plantas retrocediendo según lo imponen las características de la montaña y con cuatro cuerpos de diferentes alturas; todo lo cual, unido al tratamiento interior y a todas las comodidades de que se dispone, confieren al conjunto una categoría exclusiva y singular.

  10. DO PENSAR HISTÓRICO Á NEGAÇÃO DO PÓS-TURISMO: Ensaio crítico sobre Pós-Turismo

    Directory of Open Access Journals (Sweden)

    João dos Santos Filho

    2011-12-01

    Full Text Available Resumo: O presente ensaio propõe uma análise crítica do livro O Pós-Turismo, do mexicano Sergio Molina. Inicialmente, destacamos os métodos funcionalista, estruturalista e do materialismo histórico como instrumentos capazes de interpretar a realidade turística, mostrando seus avanços e limites, para, em seguida, discutir o conceito de pós-modernidade e o surgimento do sufixo “pós”. Assim, poderemos iniciar a discussão em torno do pós-turismo e explicitar o método utilizado por Molina para criar tal conceito e demonstrar como o mesmo contribui para o empobrecimento científico e acadêmico da teoria do Turismo, evidenciando que tal conceito aplica-se como uma construção voltada para o mercado e não para o saber turístico. Palavras-chave: Turismo. Teoria do Turismo. Pós-Turismo. Funcionalismo. Neoliberalismo. 

  11. Abengalbón, o mouro amigo do Cid

    Directory of Open Access Journals (Sweden)

    Maria de la Concepción Piñero Valverde

    2011-10-01

    Full Text Available O Poema de Mio Cid apresenta um caso interessante de aliança e amizade pessoal entre diferentes grupos étnicos e religiosos, na Espanha medieval. Abengalbón, senhor mouro de Molina, é visto pelo poeta não somente como amigo generoso do Cid, mas anda como alguém que, graças à sua lealdade, deve ser lembrado com reverência, ao passo que alguns personagens cristãos são retratados como figuras mesquinhas e traiçoeiras. Também no Romancero e em outras obras da literatura espanhol medieval são apresentados casos de convivência amistosa entre cristão e mouros.El Poema de Mio Cid presenta un caso interesante de alianza y amistad personal entre distintos grupo étnicos y religiosos en la Espanha medieval. El poeta ve a Albengalbón, señor moro de Molina, no solo como un amigo generoso de El Cid, sino como alguien que, gracias a su lealtad, debe ser recordado con reverencia, mientras que muestra a algunos personajes cristianos como figuras mezquinas y traicioneras. Otros casos de convivencia armoniosa entre cristianos y moros se presentan en el Romancero y otras de la literatura española medieval.

  12. Inhibitory action of some essential oils and phytochemicals on the growth of various moulds isolated from foods

    Directory of Open Access Journals (Sweden)

    Evandro Leite de Souza

    2005-03-01

    Full Text Available The aim of this study was to determine the sensitivity profile of mould strains isolated from foods to some essential oils and phytochemicals. The assayed mould strains were: Fusarium spp., Rhizopus spp., Aspergillus flavus, A. niger and Penicillium spp. According to results, Lippia alba N.E. Brown, Peumus boldus Molina, Lippia microphylla Phil., Citrus limon Risso and Cymbopogon citratus Stapf. essential oil and the phytochemicals citral, eugenol and mircene showed prominent antimould activity. Among the products that evidenced antimould activity, citral and eugenol showed the lowest minimum inhibitory concentrations, which was 1% and 4%, respectively, for the most of the tested mould strains.O objetivo deste estudo foi determinar o perfil de sensibilidade de cepas de fungos filamentosos isolados de alimento a alguns óleos essenciais e fitoconstituintes. As cepas fúngicas utilizadas nos ensaios antimicrobianos foram: Fusarium spp., Rhizopus spp., Aspergillus flavus, A. niger e Penicillium spp. De acordo com os resultados obtidos, os óleos essenciais de L. Alba N.R. Brown, P. boldus Molina, L. microphylla Phill, C. limon Risso e C. citratus Stapf. e os fitoconstituintes citral, eugenol e mirceno mostraram destacada atividade antifúngica. Dentre os produtos que apresentaram atividade antifúngica, o citral e eugenol mostraram as menores CIM's, as quais foram 1% e 4%, respectivamente, para a maioria das cepas fúngicas testadas.

  13. La relación entre carácter y destino en la modernidad a través del mito de las sirenas: de Homero a Kafka y Joyce / The Relationship Between Character and Destiny in Modernity Through the Siren's Myth: from Homer to Kafka and Joyce

    Directory of Open Access Journals (Sweden)

    Jacobo de Camps Mora

    2016-02-01

    Full Text Available En este artículo se analiza la diferente articulación de la figura del héroe en la novela de Antonio Muñoz Molina, Beltenebros (1989, y en su adaptación cinematográfica, realizada por Pilar Miró (1991. Teniendo en cuenta el contexto histórico, y un origen cervantino en esa figura, se analizan las diferencias entre la técnica de presentación en la novela, el fluir de la conciencia, y las acciones y gestos en la adaptación, en la que dos escenas de baile resaltan por su contenido simbólico y carácter intertextual, que podemos relacionar con la cultura de masas. / In this article I review the hero´s characterization in Beltenebros, by Antonio Muñoz Molina (1989, and its filmic adaptation by Pilar Miró (1991. I review the historical contexts and the literary influence in that figure. We find important differences in the kind of hero, the presentation as a ”fluid” consciousness in the novel, and the contrast with the acting and gestures in the adaptation, where we find two dancing scenes relevants by its symbolic content and the inclusion of mass culture.

  14. 一个异邦人身在异邦——对《俄狄浦斯在科罗诺斯》"进场歌"的解读

    Institute of Scientific and Technical Information of China (English)

    魏朝勇

    2011-01-01

    @@ 古希腊悲剧的"合唱"分为"进场歌"(paro-dus)和"合唱歌"(stasimon)."进场歌"是接着戏剧"开场"之后由歌队(chorus)唱出的,通常志在抒发一种情感反应,并且"进场歌"中的角色一般只有歌队或歌队长.就索福克勒斯(Sophocles)的忒拜剧(Theban Plays)而言②,其中的"进场歌"显得异乎寻常.

  15. Humans, Fish, and Whales: How Right Whales Modify Calling Behavior in Response to Shifting Background Noise Conditions.

    Science.gov (United States)

    Parks, Susan E; Groch, Karina; Flores, Paulo; Sousa-Lima, Renata; Urazghildiiev, Ildar R

    2016-01-01

    This study investigates the role of behavioral plasticity in the variation of sound production of southern right whales (Eubalaena australis) in response to changes in the ambient background noise conditions. Data were collected from southern right whales in Brazilian waters in October and November 2011. The goal of this study was to quantify differences in right whale vocalizations recorded in low background noise as a control, fish chorus noise, and vessel noise. Variation in call parameters were detected among the three background noise conditions and have implications for future studies of noise effects on whale sound production.

  16. Press Reviews of Mei Lanfang in the Soviet Union, 1935, by Female Writers: Neher Versus Shaginyan

    DEFF Research Database (Denmark)

    Risum, Janne

    2016-01-01

    There are two interesting female exceptions to the all-male chorus reviewing the Chinese performer of female roles Mei Lanfang and his troupe in the local newspapers during Mei's Soviet tour in the spring of 1935. One is the well-established Russian writer Marietta Shaginyan (1888-1982), whose re......, and to uncover why Neher's expert professional analysis has so far been unduly and sadly neglected. To further set off their contrasting views of Mei Lanfang and Chinese theatre, I compare these to the more well-known viewpoints of Sergei Tretyakov and Bertolt Brecht....

  17. A New Search for $ \

    CERN Multimedia

    Dore, U; Kodama, K; Ushida, N; Loverre, P F

    2002-01-01

    % WA95\\\\ \\\\ The question whether neutrino flavours mix at some level - and the related question whether neutrinos have non-zero mass - is one of the remaining great challenges of experimental physics. Neutrinos from supernovae, from the sun, from the earth's atmosphere, from nuclear reactors and from radioactive decays are currently under study; in this frame, experiments using accelerators play a privileged role because the well known neutrino source properties allow high precision measurements and background control.\\\\ \\\\The main goal of the CHORUS experiment is to search for neutrino oscillations in the $\

  18. Singer Han Hong

    Institute of Scientific and Technical Information of China (English)

    KIRIN; KID

    2000-01-01

    HAN Hong had a happy childhood in the beautiful Xigaze City, Tibet. From the children's chorus, the military art troupe, the Prize Winning Competition on TV, up to the institute of art, she has never stopped singing. The difference to other singers her age is that she not only wishes to be a singer but a composer. Not satisfied with just singing the songs of others, she began expressing her happiness and sadness by writing her own. Finally she finished her first collection Rays in Tibet, which is the fi...

  19. 1993 China Major Cultural and Art Festivals

    Institute of Scientific and Technical Information of China (English)

    1993-01-01

    July1993 for Tomorrow-ChinaPeace and Friendship Internation-al choral Festival-will be held from July 15 to 20 in Beijing.Some500 professional singers from Eu-rope,America and Asia will parti-cipate in the festival.During the opening ceremony,the singers willperfrom the Ode to Joy,by Lud-wig Van Beethoven.Sponsor:Art Bureau of the Ministry of Culture.In association with the OrganizingCommittee of China International Chorus Festival.Tel:6016364

  20. Microprocessor implementation of an FFT for ionospheric VLF observations

    Science.gov (United States)

    Elvidge, J.; Kintner, P.; Holzworth, R.

    1984-01-01

    A fast Fourier transform algorithm is implemented on a CMOS microprocessor for application to very low-frequency electric fields (less than 10 kHz) sensed on high-altitude scientific balloons. Two FFT's are calculated simultaneously by associating them with conjugate symmetric and conjugate antisymmetric results. One goal of the system was to detect spectral signatures associated with fast time variations present in natural signals such as whistlers and chorus. Although a full evaluation of the system was not possible for operational reasons, a measure of the system's success has been defined and evaluated.

  1. Tragicomedy and Pastoral in Shakespeare's The Winter's Tale

    OpenAIRE

    Heide, Sinem Kozanoglu

    2005-01-01

    This thesis, focusing on the diptych unity of Shakespeare s The Winter s Tale, examines the play from the perspective of pastoral tragicomedy. The Winter s Tale seems sharply divided into two halves; one for the most part tragic; the other principally comic; with Time standing in the middle as Chorus to announce their juncture and separation. Because of its very structure, The Winter s Tale was evaluated as two disjointed plays for centuries and condemned because of it, until its two parts an...

  2. La lumière et le temps sur la scène baroque : Poetique & Pratique

    OpenAIRE

    Françoise Siguret

    2016-01-01

    Time: Aristotle, in the Poetics, recommends the playwright to confine his tragedy within «two revolutions of the sun»; the concept refers to the light perception, to the fact that greek drama is acted in the open air. The messengers and the chorus represented on the stage, in the present time, what happened outside of it. In the age of the French classical theatre, the chronological sequence of the action had to conform to the laws of the reason: the so-called rule of the twenty-four hours be...

  3. BRINGING CIVILIZATION: SAVAGERY AND THE TAMING OF THE SAVAGE

    Directory of Open Access Journals (Sweden)

    Nicholas D. Newman

    2015-01-01

    Full Text Available “See, the Conqu’ring Hero Comes” goes the famous chorus from Handel’s Judas Maccabeus, but how does the hero conquer? Achilles defeats his enemies through his extraordinary prowess in battle, Odysseus by using his wit, but some heroes must abandon the trappings of civilization in order to conquer. This paper examines two examples of such heroes from Germanic and Greco-Roman myth: Beowulf and Herakles. In the texts analyzed, these heroes not only set aside their civilized veneer, but must journey into the territory of the monster they wish to destroy and there use savagery to defeat the savage, in order to bring civilization.

  4. Wave-particle interactions in the outer radiation belts

    CERN Document Server

    Agapitov, O V; Artemyev, A V; Mourenas, D; Krasnoselskikh, V V

    2015-01-01

    Data from the Van Allen Probes have provided the first extensive evidence of non-linear (as opposed to quasi-linear) wave-particle interactions in space with the associated rapid (fraction of a bounce period) electron acceleration to hundreds of keV by Landau resonance in the parallel electric fields of time domain structures (TDS) and very oblique chorus waves. The experimental evidence, simulations, and theories of these processes are discussed. {\\bf Key words:} the radiation belts, wave-particle interaction, plasma waves and instabilities

  5. The Famous Conductor,VuZhu Dokyi

    Institute of Scientific and Technical Information of China (English)

    1996-01-01

    VUzhu Dokyi,now the head of the Tibetan Song and Dance Ensemble is a second-grade conductor of the state,a member of Chinese Musicians’Association,the vice-president of Tibetan Musicians’Association and a council member of the Chinese Chorus Artists’Association.In 1960 he was admitted to the Tianjin Conservatory of Music and followed Qiu Jianhua,the famous music educator,to learn violin.After graduation,he was first violin in the Tibetan Song and Dance Ensemble Orchestra.

  6. First results from the Cluster wideband plasma wave investigation

    Directory of Open Access Journals (Sweden)

    D. A. Gurnett

    Full Text Available In this report we present the first results from the Cluster wideband plasma wave investigation. The four Cluster spacecraft were successfully placed in closely spaced, high-inclination eccentric orbits around the Earth during two separate launches in July – August 2000. Each spacecraft includes a wideband plasma wave instrument designed to provide high-resolution electric and magnetic field wave-forms via both stored data and direct downlinks to the NASA Deep Space Network. Results are presented for three commonly occurring magnetospheric plasma wave phenomena: (1 whistlers, (2 chorus, and (3 auroral kilometric radiation. Lightning-generated whistlers are frequently observed when the spacecraft is inside the plasmasphere. Usually the same whistler can be detected by all spacecraft, indicating that the whistler wave packet extends over a spatial dimension at least as large as the separation distances transverse to the magnetic field, which during these observations were a few hundred km. This is what would be expected for nonducted whistler propagation. No case has been found in which a strong whistler was detected at one spacecraft, with no signal at the other spacecraft, which would indicate ducted propagation. Whistler-mode chorus emissions are also observed in the inner region of the magnetosphere. In contrast to lightning-generated whistlers, the individual chorus elements seldom show a one-to-one correspondence between the spacecraft, indicating that a typical chorus wave packet has dimensions transverse to the magnetic field of only a few hundred km or less. In one case where a good one-to-one correspondence existed, significant frequency variations were observed between the spacecraft, indicating that the frequency of the wave packet may be evolving as the wave propagates. Auroral kilometric radiation, which is an intense radio emission generated along the auroral field lines, is frequently observed over the polar regions. The

  7. Determination of Strange Sea Quark Distributions from Fixed-target and Collider Data

    CERN Document Server

    Alekhin, S; Caminadac, L; Lipka, K; Lohwasser, K; Moch, S; Petti, R; Placakyte, R

    2014-01-01

    We present an improved determination of the strange sea distribution in the nucleon with constraints coming from the recent charm production data in neutrino-nucleon deep-inelastic scattering by the NOMAD and CHORUS experiments and from charged current inclusive deep-inelastic scattering at HERA. We demonstrate that the results are consistent with the data from the ATLAS and the CMS experiments on the associated production of $W^\\pm$-bosons with $c$-quarks. We also discuss issues related to the recent strange sea determination by the ATLAS experiment using LHC collider data.

  8. The new ABMP16 PDF

    CERN Document Server

    Alekhin, S; Moch, S; Placakyte, R

    2016-01-01

    We present an update of the ABM12 PDF analysis including improved constraints due to the final version of the inclusive DIS HERA data, the Tevatron and LHC data on the W- and Z-production and those on heavy-quark production in the electron- and neutrino-induced DIS at HERA and the fixed-target experiments NOMAD and CHORUS. We also check the impact of the Tevatron and LHC top-quark production data on the PDFs and the strong coupling constant. We obtain $\\alpha_s(M_Z)=0.1145(9)$ and $0.1147(8)$ with and without the top-quark data included, respectively.

  9. Determination of strange sea quark distributions from fixed-target and collider data

    Energy Technology Data Exchange (ETDEWEB)

    Alekhin, S. [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany); Institut Fiziki Vysokikh Ehnergij, Protvino (Russian Federation); Bluemlein, J.; Lohwasser, K. [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany); Caminada, L. [Zuerich Univ. (Switzerland). Physik Inst.; Lipka, K.; Placakyt e, R. [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Moch, S. [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany); Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik; Petti, R. [South Carolina Univ., Columbia, SC (United States). Dept. of Physics and Astronomy

    2014-04-15

    We present an improved determination of the strange sea distribution in the nucleon with constraints coming from the recent charm production data in neutrino-nucleon deep-inelastic scattering by the NOMAD and CHORUS experiments and from charged current inclusive deep-inelastic scattering at HERA. We demonstrate that the results are consistent with the data from the ATLAS and the CMS experiments on the associated production of W{sup ±}-bosons with c-quarks. We also discuss issues related to the recent strange sea determination by the ATLAS experiment using LHC collider data.

  10. Experimental study of quasi-elastic neutrino interactions on Ar with a liquid Ar TPC exposed to the WANF neutrino beam

    CERN Document Server

    Curioni, A

    2006-01-01

    We present results from the first exposure of a liquid Ar time projection chamber to a neutrino beam. The data have been collected in 1997 with a 50 liter ICARUS-like chamber located between the CHORUS and NOMAD experiment at the CERN West Area Neutrino Facility. We focus on the analysis of quasi-elastic interactions; despite the limited size of the detector, nuclear effects beyond Fermi motion and Pauli blocking have been observed as perturbations to the pure quasi-elastic kinematics.

  11. Is there a hard money future after graduate school?

    Science.gov (United States)

    Nelso, Stephen T.

    As a relatively junior member of AGU, I wish to express a few opinions that are probably shared by many other junior AGU members. I am sure we are all familiar with the plight of many recent graduates as they struggle with a changing economy and shifting societal requirements on the sciences. I do not wish to merely join the chorus of those who complain that society has educated them only to see them forced to seek a living outside of their training. I hope, rather, to speak primarily to the senior members of AGU. I hope you will listen.

  12. circadian rhythm of calling behavior in the emei music frog (babina daunchina)is associated with habitat temperature and relative humidity

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    generally,the function of vocalizations made by male anurans are to attract females or defend resources.typically,males vocalize in choruses during one or more periods in a twenty-four-hour cycle,which varies,however,among species.nevertheless,the causal factors influencing circadian variations of calling patterns in anuran species are not clear.in this study,male chorus vocalizations were monitored in the emei music frog (babina daunchina)for 17 consecutive days during the breeding season,while its habitat air temperature and relative humidity in the course of experiments were measured as well.the results revealed that the circadian calling patterns were characterized by two periods of peak vocalization,which were observed from 0500 h to 0700 h and from 1300 h to 2000 h,while the lowest activity period was found from 2100 h to 2200 h.both calls/h and notes/h were positively correlated with air temperature and negatively with relative humidity.overall,our data indicate that the emei music frogs (b.daunchina)could regulate their vocal activities based on the changes of physical micro-environment (e.g.,temperature or humidity)to maximize reproductive success.

  13. Anurans in a Subarctic Tundra Landscape Near Cape Churchill, Manitoba

    Science.gov (United States)

    Reiter, M.E.; Boal, C.W.; Andersen, D.E.

    2008-01-01

    Distribution, abundance, and habitat relationships of anurans inhabiting subarctic regions are poorly understood, and anuran monitoring protocols developed for temperate regions may not be applicable across large roadless areas of northern landscapes. In addition, arctic and subarctic regions of North America are predicted to experience changes in climate and, in some areas, are experiencing habitat alteration due to high rates of herbivory by breeding and migrating waterfowl. To better understand subarctic anuran abundance, distribution, and habitat associations, we conducted anuran calling surveys in the Cape Churchill region of Wapusk National Park, Manitoba, Canada, in 2004 and 2005. We conducted surveys along ~l-km transects distributed across three landscape types (coastal tundra, interior sedge meadow-tundra, and boreal forest-tundra interface) to estimate densities and probabilities of detection of Boreal Chorus Frogs (Pseudacris maculata) and Wood Frogs (Lithobates sylvaticus). We detected a Wood Frog or Boreal Chorus Frog on 22 (87%) of 26 transects surveyed, but probability of detection varied between years and species and among landscape types. Estimated densities of both species increased from the coastal zone inland toward the boreal forest edge. Our results suggest anurans occur across all three landscape types in our study area, but that species-specific spatial patterns exist in their abundances. Considerations for both spatial and temporal variation in abundance and detection probability need to be incorporated into surveys and monitoring programs for subarctic anurans.

  14. Temporal patterns in the soundscape of the shallow waters of a Mediterranean marine protected area

    Science.gov (United States)

    Buscaino, Giuseppa; Ceraulo, Maria; Pieretti, Nadia; Corrias, Valentina; Farina, Almo; Filiciotto, Francesco; Maccarrone, Vincenzo; Grammauta, Rosario; Caruso, Francesco; Giuseppe, Alonge; Mazzola, Salvatore

    2016-09-01

    The study of marine soundscapes is an emerging field of research that contributes important information about biological compositions and environmental conditions. The seasonal and circadian soundscape trends of a marine protected area (MPA) in the Mediterranean Sea have been studied for one year using an autonomous acoustic recorder. Frequencies less than 1 kHz are dominated by noise generated by waves and are louder during the winter; conversely, higher frequencies (4–96 kHz) are dominated by snapping shrimp, which increase their acoustic activity at night during the summer. Fish choruses, below 2 kHz, characterize the soundscape at sunset during the summer. Because there are 13 vessel passages per hour on average, causing acoustic interference with fish choruses 46% of the time, this MPA cannot be considered to be protected from noise. On the basis of the high seasonal variability of the soundscape components, this study proposes a one-year acoustic monitoring protocol using the soundscape methodology approach and discusses the concept of MPA size.

  15. The Roles of Transport and Wave-Particle Interactions on Radiation Belt Dynamics

    Science.gov (United States)

    Fok, Mei-Ching; Glocer, Alex; Zheng, Qiuhua

    2011-01-01

    Particle fluxes in the radiation belts can vary dramatically during geomagnetic active periods. Transport and wave-particle interactions are believed to be the two main types of mechanisms that control the radiation belt dynamics. Major transport processes include substorm dipolarization and injection, radial diffusion, convection, adiabatic acceleration and deceleration, and magnetopause shadowing. Energetic electrons and ions are also subjected to pitch-angle and energy diffusion when interact with plasma waves in the radiation belts. Important wave modes include whistler mode chorus waves, plasmaspheric hiss, electromagnetic ion cyclotron waves, and magnetosonic waves. We investigate the relative roles of transport and wave associated processes in radiation belt variations. Energetic electron fluxes during several storms are simulated using our Radiation Belt Environment (RBE) model. The model includes important transport and wave processes such as substorm dipolarization in global MHD fields, chorus waves, and plasmaspheric hiss. We discuss the effects of these competing processes at different phases of the storms and validate the results by comparison with satellite and ground-based observations. Keywords: Radiation Belts, Space Weather, Wave-Particle Interaction, Storm and Substorm

  16. Nonlinear wave-particle interactions in the outer radiation belts: Van Allen Probes results

    Science.gov (United States)

    Agapitov, Oleksiy; Mozer, Forrest; Artemyev, Anton; Drake, James; Vasko, Ivan

    2016-10-01

    Huge numbers of different nonlinear structures (double layers, electron holes, non-linear whistlers, etc. referred to as Time Domain Structures - TDS) have been observed by the electric field experiment on board the Van Allen Probes. A large part of the observed non-linear structures are associated with whistler waves and some of them can be directly driven by whistlers. Observations of electron velocity distributions and chorus waves by the Van Allen Probe B provided long-lasting signatures of electron Landau resonant interactions with oblique chorus waves in the outer radiation belt. In the inhomogeneous geomagnetic field, such resonant interactions then lead to the formation of a plateau in the parallel (with respect to the geomagnetic field) velocity distribution due to trapping of electrons into the wave effective potential. The feedback from trapped particles provides steepening of parallel electric field and development of TDS seeded from initial whistler structure (well explained in terms of Particle-In-Cell model). The decoupling of the whistler wave and the nonlinear electrostatic component is shown in PIC simulation in the inhomogeneous magnetic field system and are observed by the Van Allen Probes in the radiation belts.

  17. Using the cold plasma dispersion relation and whistler mode waves to quantify the antenna sheath impedance of the Van Allen Probes EFW instrument

    Science.gov (United States)

    Hartley, D. P.; Kletzing, C. A.; Kurth, W. S.; Bounds, S. R.; Averkamp, T. F.; Hospodarsky, G. B.; Wygant, J. R.; Bonnell, J. W.; Santolík, O.; Watt, C. E. J.

    2016-05-01

    Cold plasma theory and parallel wave propagation are often assumed when approximating the whistler mode magnetic field wave power from electric field observations. The current study is the first to include the wave normal angle from the Electric and Magnetic Field Instrument Suite and Integrated Science package on board the Van Allen Probes in the conversion factor, thus allowing for the accuracy of these assumptions to be quantified. Results indicate that removing the assumption of parallel propagation does not significantly affect calculated plasmaspheric hiss wave powers. Hence, the assumption of parallel propagation is valid. For chorus waves, inclusion of the wave normal angle in the conversion factor leads to significant alterations in the distribution of wave power ratios (observed/ calculated); the percentage of overestimates decreases, the percentage of underestimates increases, and the spread of values is significantly reduced. Calculated plasmaspheric hiss wave powers are, on average, a good estimate of those observed, whereas calculated chorus wave powers are persistently and systematically underestimated. Investigation of wave power ratios (observed/calculated), as a function of frequency and plasma density, reveals a structure consistent with signal attenuation via the formation of a plasma sheath around the Electric Field and Waves spherical double probes instrument. A simple, density-dependent model is developed in order to quantify this effect of variable impedance between the electric field antenna and the plasma interface. This sheath impedance model is then demonstrated to be successful in significantly improving agreement between calculated and observed power spectra and wave powers.

  18. Wave "Coherency" and Implications for Wave-Particle Interactions

    Science.gov (United States)

    Tsurutani, Bruce; Singh Lakhina, Gurbax; Bhanu, Remya; Lee, Lou-Chuang

    2016-07-01

    Wave "coherency" was introduced in 2009 by Tsurutani et al. (JGR, doi:10.1029/2008JA013353, 2009) to describe the waves detected in the ~10 to 100 ms duration subelements which are the fundamental components of ~0.1 to 0.5 s chorus "elements". In this talk we will show examples of what we mean by coherency, quasi-coherency and incoherency for a variety of magnetospheric plasma waves. We will show how to measure coherency/quasicoherency quantitatively for electromagnetic whistler mode chorus, electromagnetic ion cyclotron (EMIC) waves, plasmaspheric hiss and linearly polarized magnetosonic waves. If plasma waves are coherent, their interactions with resonant particles will be substantially different. Specific examples will be used to show that the pitch angle scattering rates for energetic charged particles is roughly 3 orders of magnitude faster than the Kennel-Petschek diffusion (which assumes incoherent waves) rate. We feel that this mechanism is the only one that can explain ~ 0.1- 0.5 s bremsstrahlung x-ray microbursts.

  19. Oblique Whistler-Mode Waves in the Earth's Inner Magnetosphere: Energy Distribution, Origins, and Role in Radiation Belt Dynamics

    Science.gov (United States)

    Artemyev, Anton; Agapitov, Oleksiy; Mourenas, Didier; Krasnoselskikh, Vladimir; Shastun, Vitalii; Mozer, Forrest

    2016-04-01

    In this paper we review recent spacecraft observations of oblique whistler-mode waves in the Earth's inner magnetosphere as well as the various consequences of the presence of such waves for electron scattering and acceleration. In particular, we survey the statistics of occurrences and intensity of oblique chorus waves in the region of the outer radiation belt, comprised between the plasmapause and geostationary orbit, and discuss how their actual distribution may be explained by a combination of linear and non-linear generation, propagation, and damping processes. We further examine how such oblique wave populations can be included into both quasi-linear diffusion models and fully nonlinear models of wave-particle interaction. On this basis, we demonstrate that varying amounts of oblique waves can significantly change the rates of particle scattering, acceleration, and precipitation into the atmosphere during quiet times as well as in the course of a storm. Finally, we discuss possible generation mechanisms for such oblique waves in the radiation belts. We demonstrate that oblique whistler-mode chorus waves can be considered as an important ingredient of the radiation belt system and can play a key role in many aspects of wave-particle resonant interactions.

  20. Evaluación de la Actividad Nitrato Reductasa y Crecimiento Hidropónico de Lechuga (Lactuca Sativa L. ‘Crufia’) en Función de Cuatro Soluciones Nutritivas

    OpenAIRE

    Malca Soto, Flori; Universidad Nacional Agraria La Molina, Perú

    2013-01-01

    El experimento se realizó en la Universidad Nacional Agraria La Molina (Lima – Perú; 2009-2010), con el objetivo de determinar los efectos de la aplicación de cuatro soluciones nutritivas (150, 200, 250 y 300 mg N/L) sobre los parámetros: nitrato reductasa, materia fresca y seca, diámetro de cabeza, número de hojas y área foliar en dos sistemas hidropónicos: raíz  flotante  y  usando  arena.  Se presentaron en las lechugas tratadas con 300 mg N/L, en raíz flotante y usando arena, los mayores ...

  1. La propuesta de un nuevo concepto de lo humano en El beso de la mujer araña

    Directory of Open Access Journals (Sweden)

    Jorge Ruiz Luna

    1999-02-01

    Full Text Available Este trabajo pretende demostrar que en la novela El beso de la mujer araña (1976, del argentino Manuel Puig, se muestra simbólicamente la desigual relación entre la mujer y el hombre en la androcéntrica sociedad latinoamericana contemporánea, y cómo esa relación de dominio que deshumaniza a ambos elementos, puede llegar a convertirse en una relación de igualdad. Los personajes centrales de la novela, Luis Molina y Valentín Arregui, prueban que el camino para esa nueva humanidad debe pasar por una educación liberadora y una práctica consecuente.

  2. How do we see art: an eye-tracker study

    Directory of Open Access Journals (Sweden)

    Rodrigo eQuian Quiroga

    2011-09-01

    Full Text Available We describe the pattern of fixations of subjects looking at figurative and abstract paintings from different artists (Molina, Mondrian, Rembrandt, della Francesca and at modified versions in which different aspects of these art pieces were altered with simple digital manipulations. We show that the fixations of the subjects followed some general common principles (e.g. being attracted to saliency regions but with a large variability for the figurative paintings, according to the subject’s personal appreciation and knowledge. In particular, we found different gazing patterns depending on whether the subject saw the original or the modified version of the painting first. We conclude that the study of gazing patterns obtained by using the eye-tracker technology give a useful approach to quantify how subjects observe art.

  3. Noether and Belinfante corrected types of currents for perturbations in the Einstein-Gauss-Bonnet gravity

    CERN Document Server

    Petrov, A N

    2011-01-01

    In the framework of an arbitrary D-dimensional metric theory, perturbations are considered on arbitrary backgrounds, which, however, are solutions of the theory. Conserved currents for perturbations are presented following two known prescriptions: of the canonical Noether theorem and of the Belinfante symmetrization rule. On the basis of the generalized formulae, currents in the Einstein-Gauss-Bonnet (EGB) gravity for arbitrary types of perturbations on arbitrary curved backgrounds (not only vacuum) are constructed in the explicit covariant form. A more attention is paid to the energy-momentum tensors for perturbations as more important parts in the structure of the currents. To be tested the new expressions are used a) to present energy density for weak flat gravitational waves in D-dimensional EGB gravity; b) to present mass flux for the Maeda-Dadhich-Molina 3D radiating black holes of the Kaluza-Klein type in 6D EGB gravity.

  4. Antimonumentos: trabalho de memória e de resistência

    Directory of Open Access Journals (Sweden)

    Márcio Seligmann-Silva

    2016-04-01

    Full Text Available Resumo Este ensaio apresenta uma reflexão sobre o fenômeno dos "antimonumentos" que surgiram no final do século XX como uma forma de lidar, pelo viés das artes, com a violência de Estado, como nos casos do nazismo e das ditaduras latino-americanas. Este texto faz inicialmente uma retomada da mnemotécnica, ou seja, da antiga "arte da memória", que tem como seu pai mítico Simônides de Ceos, para em seguida apresentar a cena moderna da "arte da memória" sob a rubrica dos antimonumentos. O trabalho apresenta e discute obras de, entre outros artistas, Jochen Gerz, Horst Hoheisel, Andreas Knitz, Marcelo Brodsky e Fulvia Molina.

  5. 浅谈批评性话语分析的发展--读《语篇的批评性分析和媒体的批评性分析:挑战和缺点》

    Institute of Scientific and Technical Information of China (English)

    李萌

    2014-01-01

    本文通过对Pedro Santander Molina 2009年发表在 Critical Discourse Studies 中的文章 Critical analysis of discourse and of the media: Chalenges and shortcoming (《语篇的批评性分析和媒体的批评性分析:挑战和缺点》)的分析,对批评性话语分析的挑战和缺点进行了探讨。阐述了这篇文章在理论上的突破,揭示了它对批评性话语分析学者的启示和帮助。

  6. Raceways-based production of algal crude oil

    Energy Technology Data Exchange (ETDEWEB)

    Chisti, Yusuf [Massey Univ., Palmerston North (New Zealand). School of Engineering

    2013-11-01

    Raceway ponds, or 'high-rate algal ponds', of various configurations have been used to treat wastewater since the 1950s. They are also known as Oswald ponds after their inventor W. J. Oswald. Large-scale outdoor culture of microalgae and cyanobacteria in raceways is well established (Terry and Raymond 1985; Oswald 1988; Borowitzka and Borowitzka 1989; Becker 1994; Lee 1997; Molina Grima 1999; Pulz 2001; Borowitzka 2005; Spolaore et al. 2006). Raceway culture is used commercially in the United States, Thailand, China, Israel and elsewhere, mostly to produce algae for relatively high-value applications. This chapter is focused on raceways typically used in the production of algal biomass and not in the treatment of wastewater. The engineering design, operation and performance characteristics of raceways are discussed. The biomass productivity of the raceways is assessed in relation to limits imposed by algal biology. The economics of algal oil production in raceways are discussed. (orig.)

  7. Socialismo y comunismo en la retaguardia valenciana, 1936-1939. De aliados a enemigos

    Directory of Open Access Journals (Sweden)

    Sergio Valero Gómez

    2011-07-01

    Full Text Available The Valencian province was one of the main political scenes in the conflict between socialism and communism, very important by its implications after the Spanish Civil War. The essential factors for this hard confrontation between these two political movements were: the founding, in October of 1936, of a communist peasant union, opposed to revolution and in conflict with the socialist one, that defended collectivization; the attack to Largo Caballero’s leadership by communists from the beginning of 1937; and the huge increase of the members of communist movement that questioned the socialist hegemony. The conflict started with achievements in favor of communist movement, but, finally, it culminated, in March of 1939, in the Casado’s coup d’état. In Valencia, this coup was supported by Manuel Molina Conejero, the Provincial Governor and the leader of the provincial socialism.

  8. Noether and Belinfante corrected types of currents for perturbations in the Einstein-Gauss-Bonnet gravity

    Energy Technology Data Exchange (ETDEWEB)

    Petrov, A N, E-mail: anpetrov@rol.ru [Relativistic Astrophysics Group, Sternberg Astronomical Institute, Universitetskii Pr., 13, Moscow 119992 (Russian Federation)

    2011-11-07

    In the framework of an arbitrary D-dimensional metric theory, perturbations are considered on arbitrary backgrounds that are however solutions of the theory. Conserved currents for perturbations are presented following two known prescriptions: the canonical Noether theorem and the Belinfante symmetrization rule. Using generalized formulae, currents in the Einstein-Gauss-Bonnet (EGB) gravity for arbitrary types of perturbations on arbitrary curved backgrounds (not only vacuum) are constructed in an explicit covariant form. Special attention is paid to the energy-momentum tensors for perturbations which are an important part in the structure of the currents. We use the derived expressions for two applied calculations: (a) to present the energy density for weak flat gravitational waves in D-dimensional EGB gravity; (b) to construct the mass flux for the Maeda-Dadhich-Molina 3D radiating black holes of a Kaluza-Klein type in 6D EGB gravity. (paper)

  9. A new species of Phrixotrichus (Araneae, Theraphosidae from southwestern Argentina and new distributional data for P. vulpinus

    Directory of Open Access Journals (Sweden)

    Nelson Ferretti

    2015-06-01

    Full Text Available ABSTRACT A new species of Phrixotrichus Simon, 1889, P. pucara sp. nov., is described and illustrated based on a male from Pucará river, Neuquén province, Argentina. Male can be distinguished from all other species of the genus by the presence of a long strong spine on inner face of prolateral branch of tibial apophysis; also, it differs from P. scrofa (Molina, 1788 and P. vulpinus (Karsch, 1880 by a serrated prolateral keel of the male palpal bulb. Male resembles P. jara Perafán & Pérez-Miles, 2014 but can be distinguished by the uniform color on dorsal cephalothorax and by the palpal organ morphology being wider on the bulb base and embolus shorter and thicker, with the tip of embolus not so directed retrolaterally and prolateral keel bearing a serrated edge with three teeth. Additionally, P. vulpinus is reported for the first time for Argentina along with new distributional data.

  10. El museo como espacio educativo

    OpenAIRE

    2013-01-01

    El Trabajo Fin de Grado titulado "El museo como espacio educativo" tutelado por D. Jesús Féliz Pascual Molina, trata sobre el estudio acerca de cómo se usan los museos como espacios lúdicos y como mediadores de enseñanza. Para su realización se ha tenido en cuenta la legislación vigente y sobre todo el Decreto 122/2007 de 27 de Diciembre, por el que se establece el currículo de Educación Infantil en Castilla y León. En él se hace mención a la evolución de los museos, los diferentes tipos exis...

  11. Estimación de los principales parámetros reproductivos y productivos del Pecari tajacu, Linnaeus, 1758 pecari de collar o sajino en cautiverio (Loreto, Perú)

    OpenAIRE

    2009-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Producción Animal El presente estudio estimación de los parámetros reproductivos y productivos de Pecari tajacu, Linnaeus, 1758 “pecari de collar” o “sajino” en cautiverio (Loreto, Perú), se llevó a cabo en el Centro Piloto de Zoocria para la Amazonía – UNAP, ubicado en la Región Loreto, Provincia de Maynas, Perú. La investigación es básica descriptiva ex post facto, que consistió en obtener información de los registr...

  12. El cultivo de marigold (Tagetes erecta l.) En el Perú: presente y futuro

    OpenAIRE

    Méndez García, Eduardo Felipe

    2009-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Producción Agrícola Con los objetivos de conocer, la biología y la evolución en el manejo agronómico del cultivo de “marigold” en el Perú y el mundo; el manejo postcosecha para la producción de harina y oleorresina; las ventajas y limitaciones del cultivo y su potencial futuro en el Perú, la rentabilidad en comparación con otros cultivos y la validación para el control de nemátodos; se realizó la presente investigació...

  13. Web 2.0 usage among New Zealand learners: Findings on gender difference

    Directory of Open Access Journals (Sweden)

    Ning Wei

    Full Text Available In this paper, gender differences in Web 2.0 usage by postgraduate students in New Zealand are presented. 84 postgraduate students drawn from two different convenience samples were surveyed to discover the extent to which they used and were familiar with Web 2.0 applications. According to Cuadrado-García, Ruiz-Molina and Montoro-Pons (2010, p. 367, \\"men and women differ in their interaction with technology\\". In this study, gender differences in the use of different Web 2.0 applications and technologies have been considered. Whilst findings from this study are limited by the way in which the populations were sampled, the sample size and having a majority of international students with English as a second language, it is interesting to note that there were only minor differences between the ways in which male and female postgraduate students use Web 2.0 applications.

  14. Experimental study of periodic flow effects on spanwise vortex

    Science.gov (United States)

    Garcia Molina, Cruz Daniel; Lopez Sanchez, Erick Javier; Ruiz Chavarria, Gerardo; Medina Ovando, Abraham

    2014-11-01

    We present an experimental study about the spanwise vortex produced in a flow going out of a channel in shallow waters. This vortex travels in front of the dipole. The velocity field measurement was done using the PIV technique, and DPIVsoft (https://www.irphe.fr/ ~meunier/) was used for data processing. In this case the flow has a periodic forcing to simulate ocean tides. The experiment was conducted in a channel with variable width and the measurements were made using three different values of the aspect ratio width-depth. We present results of the position, circulation of this spanwise vortex and the flow inversion effect. The change of flow direction modify the intensity of the vortex, but it does not destroy it. The vertical components of the velocity field contributes particle transport. G. Ruiz Chavarria, E. J. Lopez Sanchez and C. D. Garcia Molina acknowledge DGAPA-UNAM by support under project IN 116312 (Vorticidad y ondas no lineales en fluidos).

  15. Agustin de Betancourt’s Wind Machine for Draining Marshy Ground: Approach to Its Geometric Modeling with Autodesk Inventor Professional

    Directory of Open Access Journals (Sweden)

    José Ignacio Rojas-Sola

    2016-12-01

    Full Text Available The present study shows the process followed in making the three-dimensional model and geometric documentation of a historical invention of the renowned Spanish engineer Agustin de Betancourt y Molina, which forms part of his rich legacy. Specifically, this was a wind machine for draining marshy ground, designed in 1789. The present research relies on the computer-aided design (CAD techniques using Autodesk Inventor Professional software, based on the scant information provided by the only two drawings of the machine, making it necessary to propose a number of dimensional and geometric hypotheses as well as a series of movement restrictions (degrees of freedom, to arrive at a consistent design. The results offer a functional design for this historic invention.

  16. Conformado macroscópico de óxidos metálicos para su aplicación en reactores solares de producción de hidrógeno

    OpenAIRE

    García Benito, Inés

    2011-01-01

    Proyecto Fin de Carrera leído en la Universidad Rey Juan Carlos en el curso académico 2010/2011. Directores del Proyecto: Juan Ángel Botas Echevarría y Raúl Molina Gil Colaborador: Carolina Herradón Hernández Esta memoria, recoge la labor realizada durante el Proyecto Fin de Carrera titulado ¿Conformado macroscópico de óxidos metálicos para su aplicación en reactores solares de producción de hidrógeno¿ que se engloba dentro de una de las líneas de investigación desarrollada por el Grupo...

  17. La agricultura nahua en el siglo XVI

    Directory of Open Access Journals (Sweden)

    Jácome Alba González

    2001-01-01

    Full Text Available Alonso de Molina’s Vocabulary is the main historical source followed by the author of this article in order to understand the Nahua agriculture at the end of the XVI century. There are also other historical sources utilized by Alba González to compare the information about types of soils, climate, vegetation, agricultural technicques and the technology associated with it and about irrigation. The article has a broad information about agricultural managements and the uses of plants -mainly corn- utilized in the agricultural labour, which was basic in the life of the Nahuas in Central Mexico. It has several tables with the data obtained from the historical sources which permit to understand the richness of this economic activity. This article is important for agricultural, ecological and historical studies and the information it presents is valuable.

  18. Fluctuations of Mediterranean outflow water circulation in the Gulf of Cadiz during MIS 5 to 7: Evidence from benthic foraminiferal assemblage and stable isotope records

    Digital Repository Service at National Institute of Oceanography (India)

    Singh, A.D.; Rai, A.K.; Tiwari, M.; Naidu, P.D.; Verma, K.; Chaturvedi, M.; Niyogi, A.; Pandey, D.

    Electronica, 4(1), 1-9. Hernández-Molina, F.J., Llave, E., Somoza, L., Fernández-Puga, M.C., Maestro, A., León, R., Medialdea, T., Barnolas, A., Garcia, M., Diaz del Rio, V., Fernández-Salas, L.M., Vázquez, J.T., Lobo, F., Alveirinho Dias, J.M., Rodero, J...., Stow, D.A.V., Garcia, M., Somoza, L., Vázquez, J.T., Lobo, F.J., Maestro, A., Diaz del Rio, V., León, R., Medialdea, T., Gardner, J., 2006. The contourite depositional system of the Gulf of Cadiz: a sedimentary model related to the bottom current...

  19. La importancia de las ideologías de los partidos políticos en la propaganda electoral

    Directory of Open Access Journals (Sweden)

    Laura Marina Aguirre Ramírez

    2000-01-01

    Full Text Available Este artículo analiza la importancia del marketirzgen la comunicación política visto como un hipercódigo: "Por hipercódigo entendemos un código que opera sobre otro, y sólo así, es decir, que se monta en otro y lo usa. Al hacerlo anula la potencialidad discursiva del último" (Molina y Vedia, 1999: 200. Considerado de esta forma, el hipercódigo del marketingirnpone su propia lógica al código político, se abandona la perspectiva política para buscar las aspiraciones y deseos de segmentos, situados en el ámbito de la oferta y la demanda en un horizonte de maximización

  20. QS-21 Adjuvant: Laboratory-Scale Purification Method and Formulation Into Liposomes.

    Science.gov (United States)

    Brunner, Livia; Barnier-Quer, Christophe; Collin, Nicolas

    2017-01-01

    QS-21, a saponin extracted from the tree Quillaja saponaria Molina, is a vaccine adjuvant which has been shown to elicit robust antibody and cell-mediated immune responses in a variety of preclinical and clinical studies [1]. Its purification from the natural source is a lengthy and difficult process. The commercially available saponin mixture Quil-A(®) is a fraction of the bark extract containing a variety of saponins, including QS-21. In order to facilitate access to QS-21 at laboratory-scale amounts, we propose here a method of purification of QS-21 starting from Quil-A(®). In addition, we describe a protocol to appropriately formulate QS-21 into cholesterol-containing, neutral liposomes which are known to decrease QS-21's hemolytic activity while retaining the adjuvant effect. Methods for the physicochemical characterization of purified QS-21 and of the QS-21/liposome formulations are also described.