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Sample records for benjamin nap sacc

  1. BENJAMIN HARRISON

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    GRANDSON of a President and great-grandson of a signer of the Declaration of Independence, Benjamin Harrison carried a distinguished American name into the White House, but historians generally agree that he added very little distinction to it during his stay there.

  2. Walter Benjamins Berlin

    DEFF Research Database (Denmark)

    Walter Benjamin (1892-1940). Tolkning af alle 33 kapitler i Benjamins bybarndomserindringer fra Berlin i begyndelsen af det 20. århundrede.......Walter Benjamin (1892-1940). Tolkning af alle 33 kapitler i Benjamins bybarndomserindringer fra Berlin i begyndelsen af det 20. århundrede....

  3. THE HYPHOMYCETE GENUS DACTYLARIA SACC.

    Directory of Open Access Journals (Sweden)

    MIEN A. RIFAI

    2015-11-01

    Full Text Available An emended delimitation of the genus Dactylaria Sacc. is proposed andthe two accepted species, which are non-predaceous and dematiaceous,are redescribed and illustrated. The affinity of many nematode-trappingspecies currently classified in Dactylaria with the didymosporous generaArthrobotrys Corda, Candelabrella Rifai & R. C. Cooke and Genicularia,Rifai & R. C. Cooke is discussed and the scopes of the latter genera areenlarged, and consequently several new combinations are made.

  4. Dialektisk billede af Benjamin

    DEFF Research Database (Denmark)

    Bøggild, Jacob

    2004-01-01

    Anmeldelse af Lars Brückner: "Løse blade. Læseren, kritikeren og fortælleren Walter Benjamin"......Anmeldelse af Lars Brückner: "Løse blade. Læseren, kritikeren og fortælleren Walter Benjamin"...

  5. Benjamin, leitor de Kierkegaard

    Directory of Open Access Journals (Sweden)

    Carla Milani Damião

    2014-06-01

    Full Text Available Trata-se de uma apresentação sobre a manifestação de interesse de Walter Benjamin por Kierkegaard. Buscamos nas referências ao pensamento do filósofo dinarmaquês explícitas em seus escritos, mapear citações e indicações, além da resenha que Benjamin escreveu sobre a obra Kierkegaard de Adorno. Levou-se em consideração comentários de alguns intérpretes de Kierkegaard e de Benjamin que se ocuparam da aproximação entre os dois filósofos. Desta apresentação, indicamos um vínculo teórico de virtual importância, presente na obra de Benjamin sobre o drama barroco alemão.

  6. Benjamin Franklin Street Academy.

    Science.gov (United States)

    Wohl, Seth F.

    In this evaluation report of the sixth year of operation of the Benjamin Franklin-Urban League Street Academy in New York City, it is recommended that the program be continued for the seventh year despite the poorer than expected student gains in all studied components and the sporadic student attendance pattern and high dropout rate. Students…

  7. Benjamin Vassermanile preemiad

    Index Scriptorium Estoniae

    2007-01-01

    Graafik Benjamin Vasserman pälvis kolme digitaalse graafilise lehe eest žürii kiituse Ungaris Györis toimunud biennaalil "The Master of Drawing and Graphic Arts" ning II preemia nelja lehe eest Leedus Vilniuses toimunud VI rahvusvahelisel väikegraafika triennaalil. Eestist osalesid veel Reti Saks ja Kelli Valk

  8. Benjamin Vassermanile preemiad

    Index Scriptorium Estoniae

    2007-01-01

    Graafik Benjamin Vasserman pälvis kolme digitaalse graafilise lehe eest žürii kiituse Ungaris Györis toimunud biennaalil "The Master of Drawing and Graphic Arts" ning II preemia nelja lehe eest Leedus Vilniuses toimunud VI rahvusvahelisel väikegraafika triennaalil. Eestist osalesid veel Reti Saks ja Kelli Valk

  9. Benjamin Wasserman Itaalias auhinnatud

    Index Scriptorium Estoniae

    2000-01-01

    26. III-2. IV Itaalias toimunud II ülemaailmsel väikegraafika ja -maali näitusel "Pisa 2000" pälvis Benjamin Vasserman finalisti diplomi koos õigusega osaleda finalistide grupinäitusel. I preemia - Ana Maria Mafra.

  10. Advanced Stellar Compass, SAC-C, Interface Control Document

    DEFF Research Database (Denmark)

    Madsen, Peter Buch; Betto, Maurizio; Riis, Troels;

    Interface Control Document for the Advanced Stellar Compass for the SAC-C satellite. The SAC-C is Argentine, Danish and NASA satellite. On the SAC-C satellite there are a simplified version of the Ørsted instrumentation platform. The Advanced Stellar Compass is a improved version of the Ørsted Star...... Imager. This document descibes the interface between the Advanced Stellar Compass and OBDH, the size of the DPU and the Camera etc....

  11. Benjamin Franklin and medicine.

    Science.gov (United States)

    Hirschmann, J V

    2005-12-01

    Benjamin Franklin, called Dr. Franklin after receiving an honorary degree in 1759 for his contributions to understanding electricity, was not formally trained as a physician. Nevertheless, he had numerous interests in medicine, including experimentation, shrewd observations about health and disease in himself and others, civic activities, and inventions of medical devices. These achievements show his capacity for detailed, perceptive insights; his fastidiousness in recording his observations; and his thoughtful analyses of scientific phenomena and human conduct. In medicine, perhaps uniquely in his life, his major interests intersected: scientific pursuits, civic activities, amused scrutiny of human behavior, and the desire to improve the lot of his fellow man.

  12. Walter Benjamin and 'materialism'

    OpenAIRE

    Homburg, Phillip

    2016-01-01

    This thesis examines the emergence of Walter Benjamin’s materialism, within his early\\ud thought, from within the context of post-Kantian philosophy. The original contribution\\ud made by this thesis is that it differentiates Benjamin’s materialism from both Romanticism\\ud and neo-Kantianism, on the one side, and empiricism, on the other. In contrast to those\\ud who identify Benjamin as a practitioner of a Romantic form of immanence, a neo-Kantian\\ud or a mystical empiricist, I place Benjamin’...

  13. A Story of Benjamin Franklin

    Institute of Scientific and Technical Information of China (English)

    刘小军

    2015-01-01

    Benjamin Franklin is forever remembered as"Doctor Franklin",philosopher,scientist and political leader.He built U.S.A.,for what the nation is today is largely due to the forethought,the wisdom,and the ability of Benjamin Franklin~①.Franklin’s life is full of

  14. A Propaedeutic to Walter Benjamin

    Science.gov (United States)

    Socher, David

    2009-01-01

    The Emerson College Web site on Walter Benjamin's essay "The Work of Art in an Age of Mechanical Reproduction" nicely animates some ideas of the essay. One such idea is the following: "To an ever greater degree the work of art reproduced becomes the work of art designed for reproducibility." When Benjamin wrote this essay and this maxim, Norman…

  15. Interview with Benjamin Halligan

    Directory of Open Access Journals (Sweden)

    Marcelo Bergamin Conter

    2014-07-01

    Full Text Available Benjamin Halligan is Director of the Graduate Programme for the School of Media, Music and Performance at the University of Salford. His publications include Michael Reeves (Manchester University Press, 2003, Mark E. Smith and The Fall: Art, Music and Politics (Ashgate, 2010; co-edited with Michael Goddard, The Music Documentary: Acid Rock to Electropop (Routledge, 2013, co-edited with Rob Edgar and Kirsty Fairclough-Isaacs. He has published on disco music music and and science fiction, The Sarajevo Documentary School, Dušan Makavejev, Frank Zappa, Andrei Tarkovsky and the British Royal Family. Resonances: Noise and Contemporary Music, co-edited with Michael Goddard and Nicola Spelman, has been published by Bloomsbury in 2013, and is the companion volume to Reverberations: The Philsophy, Aesthetics and Politics of Noise (Continuum, 2013; co-edited with Michael Goddard and Paul Hegarty. The following interview occurred at The Cornerhouse, in the city of Manchester, England, in june 2013. Benjamin speaks about topics related to the two books he recently organized with co-workers at the University of Salford, Reverberations: the philosophy, aesthetics and politics of noise, and Resonances: noise and contemporary music.

  16. Unit 6 Nap Time

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正> Story: After a busy morning,it is time for a little rest."It’s nap time. Take off your shoes,"says Miss Grant. She helps everyone get their sleeping bags and makes sure that everyone has put their shoes outside Before everyone falls asleep they ask the teacher," Read us a story, please."

  17. Naps (For Parents)

    Science.gov (United States)

    ... age-by-age guidelines give an idea of average daily sleep requirements: Birth to 6 months: Infants require about ... Toddlers generally require 12 to 14 hours of sleep, including an afternoon nap ... (3 to 5 years): Preschoolers average about 11 to 12 hours at night, plus ...

  18. Benjamin's Theory of the Lyric

    Directory of Open Access Journals (Sweden)

    David E. Wellbery

    1986-09-01

    Full Text Available The paper reconstructs the argument of Benjamin's early Hölderlin essay, with special emphasis on the notion of das Gedichtete . This notion is shown to name a fundamental dissonance between two semiotic modalities, graphics and Gestalt .

  19. Connect the Book. Benjamin Franklin

    Science.gov (United States)

    Brodie, Carolyn S.

    2004-01-01

    This article presents a brief review of James Cross Giblin's "The Amazing Life of Benjamin Franklin" (Scholastic, 2000). This book provides a real look at the life of one of America's most famous statesmen who was also a printer, inventor, and writer. The book additionally includes a chronology of Franklin's life, information about his many…

  20. Benjamin Franklin and Mesmerism, revisited.

    Science.gov (United States)

    McConkey, Kevin M; Perry, Campbell

    2002-10-01

    The authors revisit and update their previous historiographical note (McConkey & Perry, 1985) on Benjamin Franklin's involvement with and investigation of animal magnetism or mesmerism. They incorporate more recent literature and offer additional comment about Franklin's role in and views about mesmerism. Franklin had a higher degree of personal involvement with and a more detailed opinion of mesmerism than has been previously appreciated.

  1. Polyphasic Sleep and Napping Strategies

    Science.gov (United States)

    2000-03-01

    UNCLASSIFIED Defense Technical Information Center Compilation Part Notice ADPO10471 TITLE: Polyphasic Sleep and Napping Strategies DISTRIBUTION...report. UNCLASSIFIED hfollowing comonent part numbers A cnprie the 0com ilation report- ADP010453 thru. ADP010473 20-1 Polyphasic Sleep and Napping ... Strategies Per Kristian OPSTAD Norwegian Defence Research Establishment P 0 Box 25 2027 Kjeller Norway Sleep deprivation is the most detrimental The

  2. The napping behaviour of Australian university students.

    Directory of Open Access Journals (Sweden)

    Nicole Lovato

    Full Text Available The purpose of this study was to evaluate the self-reported sleep and napping behaviour of Australian university students and the relationship between napping and daytime functioning. A sample of 280 university first-year psychology students (median age  = 19.00 years completed a 6-item napping behaviour questionnaire, a 12-item Daytime Feelings and Functioning Scale, the Pittsburg Sleep Quality Index and the Epworth Sleepiness Scale. Results indicated that 53.6% of students reported napping with 34% napping at least 1-2 times per week, and 17% napping three or more occasions per week. Long naps, those over 30 minutes, were taken by 77% of the napping students. Sixty-one percent of students reported they took long naps during the post-lunch dip period, from 2-4 pm. Students who nap at least once per week reported significantly more problems organizing their thoughts, gaining motivation, concentrating, and finishing tasks than students who did not nap. Students who napped also felt significantly more sleepy and depressed when compared to students who did not nap. The results also indicated that nap frequency increased with daytime sleepiness. The majority of students (51% reported sleeping 6-7 hours per night or less. Overall, the results from this study suggest that among this population of Australian first-year university students habitual napping is common and may be used in an attempt to compensate for the detrimental effects of excessive sleepiness.

  3. Documentation for delivery of Star Tracker to SAC-C

    DEFF Research Database (Denmark)

    Kilsgaard, Søren; Thuesen, Gøsta; Riis, Troels

    1999-01-01

    The documentation EIDP (End Item Data Package) describes all the tests which have been performed on the flight hardware of the Star Tracker for the Argentine, Danish and NASA satellite SAC-C.......The documentation EIDP (End Item Data Package) describes all the tests which have been performed on the flight hardware of the Star Tracker for the Argentine, Danish and NASA satellite SAC-C....

  4. Eesti graafika rahvusvahelisel areenil / Benjamin Vasserman

    Index Scriptorium Estoniae

    Vasserman, Benjamin

    1999-01-01

    26. VIII-28. XI Fredrikstadis Hebleri-nim. rahvusvahelises graafikakeskuses avatud XII Norra rahvusvahelisel graafikatriennaalil esindavad Eestit Anu Kalm, Avo Keerend, Vive Tolli, Benjamin Vasserman, Mare Vint. Peapreemia ئ Anthony Hill. Triennaali president - Herman Hebler (s. 1911). 24. VI-15. IX Poolas toimunud X Lodzi rahvusvahelisel väikegraafika triennaalil osalesid Eestist Virge Jõekalda, Benjamin Vasserman.

  5. Eesti graafika rahvusvahelisel areenil / Benjamin Vasserman

    Index Scriptorium Estoniae

    Vasserman, Benjamin

    1999-01-01

    26. VIII-28. XI Fredrikstadis Hebleri-nim. rahvusvahelises graafikakeskuses avatud XII Norra rahvusvahelisel graafikatriennaalil esindavad Eestit Anu Kalm, Avo Keerend, Vive Tolli, Benjamin Vasserman, Mare Vint. Peapreemia ئ Anthony Hill. Triennaali president - Herman Hebler (s. 1911). 24. VI-15. IX Poolas toimunud X Lodzi rahvusvahelisel väikegraafika triennaalil osalesid Eestist Virge Jõekalda, Benjamin Vasserman.

  6. Napping and Human Functioning during Prolonged Work

    Science.gov (United States)

    1987-04-30

    alternative to napping is prolonged wakefulness. Polyphasic sleep , with frequent naps rather than a single sleep period per 24 hours, is natural for both the...very young and for the aged. It is not practiced by most adults, perhaps because of societal demands. Possibly a polyphasic sleep schedule could be...Functioning 1.2 Scope of this Chapter 2. REVIEW OF LITERATURE 2.1 Partial Sleep Deprivation Studies 2.2 Nap Studies: Four Nap Factors Affecting Performance

  7. Walter Benjamin , leitor das Flores do mal

    Directory of Open Access Journals (Sweden)

    Dolf Oehler

    2014-10-01

    Full Text Available O texto conta a história da leitura de Baudelaire por Benjamin. Desde as traduções mal recebidas ao projeto das Passagens. Leitor fraterno, Benjamin vive as mesmas condições do poeta – sem domicílio, sem biblioteca, sem posição social. Assim consegue apreender profundamente a poesia baudelairiana.Abstract: The text tells the story of the work of Benjamin about Baudelaire. Since the first translations to the Passagenwerk Project. As a fraternal reader, Benjamin lives the same conditions of the poet – without a home, without a library, without a social position. These similarities make possible to him to understand profoundly Baudelaire’s poetry.Keywords: Benjamin; Baudelaire; poetry; city. Dolf Oehler é professor Emérito de Literatura Comparada da Universidade de Bonn

  8. Alertness management in flight operations - Strategic napping

    Science.gov (United States)

    Rosekind, Mark R.; Gander, Philippa H.; Dinges, David F.

    1991-01-01

    Strategic napping in two different flight operation environments is considered to illustrate its application as a fatigue countermeasure. Data obtained from commercial short-haul and long-haul operations demonstrated the utility and current practices of strategic napping. A preplanned cockpit nap acted as an acute 'safety valve' for the sleep loss, circadian disruption, and fatigue that occurs in long-haul flying.

  9. Alertness management in flight operations - Strategic napping

    Science.gov (United States)

    Rosekind, Mark R.; Gander, Philippa H.; Dinges, David F.

    1991-01-01

    Strategic napping in two different flight operation environments is considered to illustrate its application as a fatigue countermeasure. Data obtained from commercial short-haul and long-haul operations demonstrated the utility and current practices of strategic napping. A preplanned cockpit nap acted as an acute 'safety valve' for the sleep loss, circadian disruption, and fatigue that occurs in long-haul flying.

  10. Benjamin Franklin and the neurosciences.

    Science.gov (United States)

    Finger, Stanley

    2006-01-01

    Benjamin Franklin (1706-1790), who is better known in other fields, especially colonial politics and international diplomacy, was an early, major contributor to the neurosciences from the New World. Among his accomplishments are: experiments on medical electricity as a possible cure for the palsies and hysteria; the first descriptions of how electricity affecting the brain can cause a specific type of amnesia; supporting the idea that cranial shocks might provide a cure for melancholia; showing that the cures performed by the Mesmerists to remove obstructions, including nerve blockages, rest on gullibility and suggestion, and recognizing the dangers, including those to the nerves, posed by exposure to lead. Franklin?s neuroscience was firmly based on experiments, careful observations, and hard data ? and finding clinical relevance for new discoveries was always on his mind.

  11. Benjamin and Koolhaas: History's Afterlife

    Directory of Open Access Journals (Sweden)

    Frances Hsu

    2016-05-01

    Full Text Available Dialectical images are at the core of the methods suggested by two books written four decades apart yet published around the same time. The Arcades Project (first published as Das Passagen-Werk in 1981 and Delirious New York (1978 use images to critique established modes of historical interpretation. Each proposes a methodology of historical speculation based on the interpretation of fragmentary visual phenomena. Both construct alternative historical narratives about the impact of technology, mass culture and economy on the city. This essay contrasts and compares the similarities and differences between the respective authors’ treatments of the nineteenth century arcade and the Manhattan skyscraper to examine how the strategies and definitions suggested by Benjamin and Koolhaas address the function of images as tools for critical architectural analysis and knowledge.

  12. El enigma de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Javier Sigüenza

    2015-06-01

    Full Text Available El siguiente ensayo inicia reconstruyendo el relato de los últimos días de la vida de Walter Benjamin, en el contexto histórico de la Segunda Guerra Mundial, y la existencia de un misterioso manuscrito perdido en su frustrada huida por la frontera franco-española en 1940; en la segunda parte se intenta descifrar la enigmática fisionomía del pensador berlinés, cuya perspectiva múltiple, tanto en lo teórico como en lo político, lo convierten en un autor incomprendido, pero tremendamente fascinante; en la tercera parte se explora uno de sus textos más herméticos, conocido como las tesis Sobre el concepto de historia, con la intención de poner de manifiesto el carácter crítico de su discurso, como clave para comprender los enigmas del mundo moderno y su necesaria transformación revolucionaria.

  13. Periplasmic nitrate reduction in Wolinella succinogenes: cytoplasmic NapF facilitates NapA maturation and requires the menaquinol dehydrogenase NapH for membrane attachment.

    Science.gov (United States)

    Kern, Melanie; Simon, Jörg

    2009-08-01

    Various nitrate-reducing bacteria produce proteins of the periplasmic nitrate reductase (Nap) system to catalyse electron transport from the membraneous quinol pool to the periplasmic nitrate reductase NapA. The composition of the corresponding nap gene clusters varies but, in addition to napA, genes encoding at least one membrane-bound quinol dehydrogenase module (NapC and/or NapGH) are regularly present. Moreover, some nap loci predict accessory proteins such as the iron-sulfur protein NapF, whose function is poorly understood. Here, the role of NapF in nitrate respiration of the Epsilonproteobacterium Wolinella succinogenes was examined. Immunoblot analysis showed that NapF is located in the membrane fraction in nitrate-grown wild-type cells whereas it was found to be a soluble cytoplasmic protein in a napH deletion mutant. This finding indicates the formation of a membrane-bound NapGHF complex that is likely to catalyse NapH-dependent menaquinol oxidation and electron transport to the iron-sulfur adaptor proteins NapG and NapF, which are located on the periplasmic and cytoplasmic side of the membrane, respectively. The cysteine residues of a CX(3)CP motif and of the C-terminal tetra-cysteine cluster of NapH were found to be required for interaction with NapF. A napF deletion mutant accumulated the catalytically inactive cytoplasmic NapA precursor, suggesting that electron flow or direct interaction between NapF and NapA facilitated NapA assembly and/or export. On the other hand, NapA maturation and activity was not impaired in the absence of NapH, demonstrating that soluble NapF is functional. Each of the four tetra-cysteine motifs of NapF was modified but only one motif was found to be essential for efficient NapA maturation. It is concluded that the NapGHF complex plays a multifunctional role in menaquinol oxidation, electron transfer to periplasmic NapA and maturation of the cytoplasmic NapA precursor.

  14. Daytime nap controls toddlers’ nighttime sleep

    Science.gov (United States)

    Nakagawa, Machiko; Ohta, Hidenobu; Nagaoki, Yuko; Shimabukuro, Rinshu; Asaka, Yoko; Takahashi, Noriko; Nakazawa, Takayo; Kaneshi, Yousuke; Morioka, Keita; Oishi, Yoshihisa; Azami, Yuriko; Ikeuchi, Mari; Takahashi, Mari; Hirata, Michio; Ozawa, Miwa; Cho, Kazutoshi; Kusakawa, Isao; Yoda, Hitoshi

    2016-01-01

    Previous studies have demonstrated that afternoon naps can have a negative effect on subsequent nighttime sleep in children. These studies have mainly been based on sleep questionnaires completed by parents. To investigate the effect of napping on such aspects of sleep quality, we performed a study in which child activity and sleep levels were recorded using actigraphy. The parents were asked to attach actigraphy units to their child’s waist by an adjustable elastic belt and complete a sleep diary for 7 consecutive days. 50 healthy young toddlers of approximately 1.5 years of age were recruited. There was a significant negative correlation between nap duration and both nighttime sleep duration and sleep onset time, suggesting that long nap sleep induces short nighttime sleep duration and late sleep onset time. We also found a significant negative correlation between nap timing and nighttime sleep duration and also a significant positive correlation between nap timing and sleep onset time, suggesting that naps in the late afternoon also lead to short nighttime sleep duration and late sleep onset. Our findings suggest that duration-controlled naps starting early in the afternoon can induce a longer nighttime sleep in full-term infants of approximately 1.5 years of age. PMID:27277329

  15. Daydreams and nap dreams: Content comparisons.

    Science.gov (United States)

    Carr, Michelle; Nielsen, Tore

    2015-11-01

    Differences between nighttime REM and NREM dreams are well-established but only rarely are daytime REM and NREM nap dreams compared with each other or with daydreams. Fifty-one participants took daytime naps (with REM or NREM awakenings) and provided both waking daydream and nap dream reports. They also provided ratings of their bizarreness, sensory experience, and emotion intensity. Recall rates for REM (96%) and NREM (89%) naps were elevated compared to typical recall rates for nighttime dreams (80% and 43% respectively), suggesting an enhanced circadian influence. All attribute ratings were higher for REM than for NREM dreams, replicating findings for nighttime dreams. Compared with daydreams, NREM dreams had lower ratings for emotional intensity and sensory experience while REM dreams had higher ratings for bizarreness and sensory experience. Results support using daytime naps in dream research and suggest that there occurs selective enhancement and inhibition of specific dream attributes by REM, NREM and waking state mechanisms.

  16. Eestlased graafikanäitustel / Benjamin Vasserman

    Index Scriptorium Estoniae

    Vasserman, Benjamin

    1999-01-01

    IV Kochi graafikatriennaalil Jaapanis 13. III-18. IV osales Eestist Benjamin Vasserman tööga "Vaheldus I". Peapreemia: Eduardo Roca Zalazar. XIV rahvusvahelisel graafikanäitusel "Premio Internationale Biella per I'Incisione" Itaalias 23. IV-23. V osalesid Eestist Peeter Allik, Reti Saks, Benjamin Vasserman. Näituse nimeline preemia: Seung Yeon Kim. 26. VIII avati Fredrikstadis 12. Norra rahvusvaheline graafikatriennaal. 5. nov. avatakse X Varna graafikabiennaal Bulgaarias, 15. XII ئ III Egiptuse graafikatriennaal Gizas. "International Print Triennial Cracow 2000" näitustest

  17. Eestlased graafikanäitustel / Benjamin Vasserman

    Index Scriptorium Estoniae

    Vasserman, Benjamin

    1999-01-01

    IV Kochi graafikatriennaalil Jaapanis 13. III-18. IV osales Eestist Benjamin Vasserman tööga "Vaheldus I". Peapreemia: Eduardo Roca Zalazar. XIV rahvusvahelisel graafikanäitusel "Premio Internationale Biella per I'Incisione" Itaalias 23. IV-23. V osalesid Eestist Peeter Allik, Reti Saks, Benjamin Vasserman. Näituse nimeline preemia: Seung Yeon Kim. 26. VIII avati Fredrikstadis 12. Norra rahvusvaheline graafikatriennaal. 5. nov. avatakse X Varna graafikabiennaal Bulgaarias, 15. XII ئ III Egiptuse graafikatriennaal Gizas. "International Print Triennial Cracow 2000" näitustest

  18. Benjamin Franklin High School Unit Program.

    Science.gov (United States)

    Wohl, Seth F.

    The Benjamin Franklin High School Unit Program in New York City was designed to overcome the serious academic deficiencies identified as criterion for entry into the program: retardation in reading and mathematics and to improve attitudes toward school, increase classroom attendance and participation, reduce the dropout rate, improve self-image…

  19. Benjamin Franklin and Shock-Induced Amnesia

    Science.gov (United States)

    Finger, Stanley; Zaromb, Franklin

    2006-01-01

    Shock-induced amnesia received considerable attention after Cerletti popularized electroconvulsive shock therapy in the late 1930s. Yet, often overlooked is the fact that Benjamin Franklin recognized that passing electricity through the head could affect memory for the traumatic event. Franklin described his findings on himself and others in…

  20. Benjamin Constant. Ontdekker van de moderne vrijheid

    NARCIS (Netherlands)

    de Hert, Paul; Kinneging, A.; Colette, M.

    2015-01-01

    In 1806 analyseerde de Zwitsers-Franse politicus, filosoof en essayist Benjamin Constant (1767-1830) de moderne samenleving in zijn bekende boek Principes de politique. Uit dit klassiek geworden werk spreekt Constant’s ambivalentie en gevoel van nuance en subtiliteit. De “moderne” individuele

  1. Children, Redemption and Remembrance in Walter Benjamin

    Science.gov (United States)

    Jessop, Sharon

    2013-01-01

    Walter Benjamin wrote extensively on children and childhood, though this aspect of his work has hitherto received scant attention despite continuing and growing interest in his thought. This article makes explicit the connection between his acute observations of childhood and his distinctive messianic philosophy. The twin aspects of redemption in…

  2. Benjamin Banneker and the Law of Sines

    Science.gov (United States)

    Mahoney, John F.

    2005-01-01

    Benjamin Banneker, a self-taught mathematician, surveyor and astronomer published annual almanacs containing his astronomical observations and predictions. Banneker who also used logarithms to apply the Law of Sines believed that the method used to solve a mathematical problem depends on the tools available.

  3. Benjamin Franklin:Deist,Agnostic,or Atheist?

    Institute of Scientific and Technical Information of China (English)

    Eric Luther Newhall

    1997-01-01

    Benjamin Franklin’s religious beliefs have long been a subject of both interest andcontroversy. He has been viewed variously as an atheist, a deist, and an orthodoxChristian. He tells us in his autobiography that during his youth in Boston he was "pointedat with Horror by Good People, as an Infidel or Atheist. Leo Lemay. pointing to

  4. The effect of nap frequency on daytime sleep architecture.

    Science.gov (United States)

    McDevitt, Elizabeth A; Alaynick, William A; Mednick, Sara C

    2012-08-20

    It is well documented that the quality and quantity of prior sleep influence future sleep. For instance, nocturnal sleep restriction leads to an increase in slow wave sleep (SWS) (i.e. SWS rebound) during a subsequent sleep period. However, few studies have examined how prior napping affects daytime sleep architecture. Because daytime naps are recommended for management of disrupted sleep, understanding the impact of napping on subsequent sleep may be important. We monitored sleep-wake patterns for one week with actigraphy followed by a 75-minute polysomnographically-recorded nap. We found that greater nap frequency was correlated with increased Stage 1 and decreased SWS. We categorized subjects based on nap frequency during the prior week (0 nap, 1 to 2 naps, and 3 to 4 naps) and found differences in Stage 1, Stage 2, and SWS between groups. Subjects who took no naps had the greatest amount of SWS, those who took 1 to 2 naps had the most Stage 2 sleep, and those who took 3 to 4 naps had the most Stage 1. While correlations were not found between nap frequency and nocturnal sleep measures, frequent napping was associated with increased subjective sleepiness. Therefore, frequent napping appears to be associated with lighter daytime sleep and increased sleepiness during the day. Speculatively, low levels of daytime sleepiness and increased SWS in non-nappers may help explain why these individuals choose not to nap.

  5. The Timing of the Circadian Clock and Sleep Differ between Napping and Non-Napping Toddlers.

    Directory of Open Access Journals (Sweden)

    Lameese D Akacem

    Full Text Available The timing of the internal circadian clock shows large inter-individual variability across the lifespan. Although the sleep-wakefulness pattern of most toddlers includes an afternoon nap, the association between napping and circadian phase in early childhood remains unexplored. This study examined differences in circadian phase and sleep between napping and non-napping toddlers. Data were collected on 20 toddlers (34.2±2.0 months; 12 females; 15 nappers. Children followed their habitual napping and non-napping sleep schedules (monitored with actigraphy for 5 days before an in-home salivary dim light melatonin onset (DLMO assessment. On average, napping children fell asleep during their nap opportunities on 3.6±1.2 of the 5 days before the DLMO assessment. For these napping children, melatonin onset time was 38 min later (p = 0.044; d = 0.93, actigraphically-estimated bedtime was 43 min later (p = 0.014; d = 1.24, sleep onset time was 59 min later (p = 0.006; d = 1.46, and sleep onset latency was 16 min longer (p = 0.030; d = 1.03 than those not napping. Midsleep and wake time did not differ by napping status. No difference was observed in the bedtime, sleep onset, or midsleep phase relationships with DLMO; however, the wake time phase difference was 47 min smaller for napping toddlers (p = 0.029; d = 1.23. On average, nappers had 69 min shorter nighttime sleep durations (p = 0.006; d = 1.47 and spent 49 min less time in bed (p = 0.019; d = 1.16 than non-nappers. Number of days napping was correlated with melatonin onset time (r = 0.49; p = 0.014. Our findings indicate that napping influences individual variability in melatonin onset time in early childhood. The delayed bedtimes of napping toddlers likely permits light exposure later in the evening, thereby delaying the timing of the clock and sleep. Whether the early developmental trajectory of circadian phase involves an advance associated with the decline in napping is a question

  6. Naps May Sharpen a Preschooler's Language Skills

    Science.gov (United States)

    ... fullstory_163510.html Naps May Sharpen a Preschooler's Language Skills Kids who slept after learning new verbs understood ... have an advantage when it comes to developing language skills, a new study suggests. Researchers assessed 39 youngsters ...

  7. Walter Benjamin: History, Experience, and Modernity

    Directory of Open Access Journals (Sweden)

    Mario Alejandro Molano

    2014-04-01

    Full Text Available Since the end of the 20th century, there has been increasing research on modernity, especially on different segments of the cultural field. Read in this context, the works of Walter Benjamin acquire great value. The article explores four of Benjamin’s themes: a some aspects of his concept of history; b the concept of experience, in order to show its historical-critical dimension regarding the rise of modern culture; c the affinities between the way he allegorical view is developed in German Baroque drama and the way in which Baudelaire deals with the issues of modernity; and d elements of some cultural forms of modern art that Benjamin is interested in.

  8. Walter Benjamin: historia, experiencia y modernidad

    Directory of Open Access Journals (Sweden)

    Mario Alejandro Molano

    2014-01-01

    Full Text Available Desde finales del siglo XX, las investigaciones sobre modernidad, orientadas hacia distintos segmentos del campo cultural, han venido ganando un enorme terreno. Las obras de Walter Benjamin, leídas en esta perspectiva, cobran un gran valor. Se busca explorar cuatro temas benjaminianos: a algunos aspectos de su concepto de historia; b el concepto de experiencia, para mostrar su dimensión histórico-crítica con respecto al ascenso de la cultura moderna; c las afinidades entre el modo en que se desarrolla la visión alegórica en el drama barroco alemán y el modo en que Baudelaire afronta las problemáticas de la modernidad; d elementos de algunas formas culturales del arte moderno que entusiasman a Benjamin.

  9. Benjamin Friedman on Arabs in Israeli literature

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    H. F. van Rooy

    1982-05-01

    Full Text Available Benjamin Friedman was working on a thesis for his doctorate at the University of Potchefstroom when he passed away in 1979. He was immensely interested in the way the Israeli Hebrew writers pictured the Arabs in their fiction and had done a massive amount of research when he died. He was therefore unable to complete his research and to present his views in a complete study. He did, however, leave a manuscript which reflected his research and conclusions. This was edited by his family' and the University of Potchefstroom gave recognition to his work by awarding him the degree M.A. posthumously. The writer of this paper added a chapter to Mr . Friedman’s manuscript, summarising his main views on the topic. Menahem D. Rotshtein’s paper on this same subject prompted me to present Benjamin Friedman’s view on this important subject, in aid of further research and discussion.

  10. Benjamin leitor de Brecht: cinema e distanciamento

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    Bruna Della Torre de Carvalho Lima

    2014-12-01

    Full Text Available The influence of Bertolt Brecht on Walter Benjamin is usually related to the assimilation of the critical Marxist tradition by the latter. The present article seeks to carry out an immanent and theoretical critique of the work of both authors, pursuing to investigate other possible aspects of this influence. On that ground, the goal is to demonstrate that the "distancing effect" (Verfremdungseffekt in German employed by Brecht in his epic theatre plays a crucial role in the way Benjamin analyses the art of filming and appears in the four versions of the "The work of art in the age of mechanical reproduction" essay, as well as in his theory about the "aura".

  11. A modernidade pelo olhar de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    D'Angelo Martha

    2006-01-01

    Full Text Available O OBJETIVO do artigo é traçar um perfil da modernidade tomando como referência os ensaios "Paris capital do século XIX" e "Paris do Segundo Império em Baudelaire", de Walter Benjamin. O texto pretende revelar as relações entre o processo revolucionário francês, a mercantilização da sociedade e da arte e a obra poética de Baudelaire.

  12. Short Communication: A new variety of Pholiota microspora (Berk. Sacc. (Agaricales from Nepal

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    MAHESH K. ADHIKARI

    2014-04-01

    Full Text Available Adhikari MK, Watanabe K, Parajuli GP. 2014. A new variety of Pholiota microspora (Berk. Sacc. (Agaricales from Nepal. Biodiversitas 15: 99-101. In the fall of late rainy season 2011, a new Pholiota (Fr. P. Kumm. (Agaricales, Strophariaceae was collected in the Quercus forest of Phulchowki (Kathmandu valley along the trial line, on the dead log at an altitude of 2600m. The specimen gathered was quite small. It was brought to laboratory and cultivated in NARC, Pathology laboratory, Lalitpur. The mushroom has been identified as Pholiota microspora (Berk. Sacc. var. himalensis var. nov..

  13. Daytime naps improve motor imagery learning.

    Science.gov (United States)

    Debarnot, Ursula; Castellani, Eleonora; Valenza, Gaetano; Sebastiani, Laura; Guillot, Aymeric

    2011-12-01

    Sleep is known to contribute to motor memory consolidation. Recent studies have provided evidence that a night of sleep plays a similar functional role following motor imagery (MI), while the simple passage of time does not result in performance gains. Here, we examined the benefits of a daytime nap on motor memory consolidation after MI practice. Participants were trained by MI on an explicitly known sequence of finger movements at 11:00. Half of the participants were then subjected (at 14:00) to either a short nap (10 min of stage 2 sleep) or a long nap (60-90 min, including slow wave sleep and rapid eye movement sleep). We also collected data from both quiet and active rest control groups. All participants remained in the lab until being retested at 16:00. The data revealed that a daytime nap after imagery practice improved motor performance and, therefore, facilitated motor memory consolidation, as compared with spending a similar time interval in the wake state. Interestingly, the results revealed that both short and long naps resulted in similar delayed performance gains. The data might also suggest that the presence of slow wave and rapid eye movement sleep does not provide additional benefits for the sleep-dependent motor skill consolidation following MI practice.

  14. Screening a core collection of citrus genetic resources for resistance to Fusarium solani (Mart) Sacc

    Science.gov (United States)

    A causal agent for Dry root rot (DRR) of citrus has not been definitively identified, but the organism most consistently associated with DRR is Fusarium solani (Mart.) Sacc. To efficiently screen a citrus germplasm collection for resistance to F. solani, a core subset of the collection was evaluated...

  15. Southern Blight (Sclerotium rolfsii Sacc.) of Cowpea: Genetic Characterization of Two Sources of Resistance

    Science.gov (United States)

    Field studies were conducted to determine the inheritance of resistance to southern blight (caused by Sclerotium rolfsii Sacc.) exhibited by the cowpea [Vigna unguiculta (L.) Walp.] cultivars Carolina Cream and Brown Crowder, and to determine if a genetic relationship exists for this resistance betw...

  16. Genetic and phenotypic diversity of Sclerotium rolfsii Sacc. in groundnut fields in central Vietnam

    NARCIS (Netherlands)

    Le, N.C.; Mendes, R.; Kruijt, M.; Raaijmakers, J.

    2012-01-01

    Groundnut (Arachis hypogaea L.) is an economically important legume crop in Vietnam and many other countries worldwide. Stem and pod rot, caused by the soil-borne fungus Sclerotium rolfsii Sacc., is a major yield limiting factor in groundnut cultivation. To develop sustainable measures to control th

  17. O ideal de Baudelaire por Walter Benjamin Baudelaire's ideal by Walter Benjamin

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    Luciano Ferreira Gatti

    2008-01-01

    Full Text Available O artigo examina a interpretação feita por Walter Benjamin dos poemas de Charles Baudelaire marcados pela noção de ideal, a qual se opõe ao spleen. Benjamin encontra aí o esforço de rememoração de uma experiência plena, a qual constituiria, por sua vez, um elemento essencial à compreensão da modernidade como impossibilidade desta forma de experiência. Com as noções de beleza e de aura, o artigo busca ainda salientar a importância da categoria da distância para a configuração desta forma de experiência.This paper examines the interpretation made by Walter Benjamin of Baudelaire's poems determined by the notion of Ideal, which is opposed to the concept of spleen. The Ideal is identified by Benjamin as the effort of remembrance of a full experience, which constitutes an essential element to the understanding of modernity as the impossibility of such kind of experience. At last the explanation of the concepts of beauty and aura is introduced to emphasize the importance of the category of distance to the configuration of this form of experience.

  18. Kafka, Benjamin e Derrida: diante da lei

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    Carla Rodrigues

    2015-02-01

    Full Text Available ResumoEste artigo propõe articular três autores judeus — Kafka, Benjamin e Derrida, dispostos por mim nessa ordem a partir de uma perspectiva temporal — a partir da percepção de que suas obras podem ter em comum a experiência da linguagem como experiência de impossibilidade e como resistência à passagem para a modernidade. Para isso, discuto a parábola “Diante da lei”, de Kafka, comparada por Benjamin aos ensinamentos judaicos e percebida por Derrida como condição intrínseca do leitor: estar diante de um texto cuja lei de acesso nunca é dada.Palavras-chave: linguagem, desconstrução, judaísmoAbstractThis paper intends to discuss three Jewish authors — Kafka, Benjamin and Derrida, arranged by me in that or der from a temporal perspective — from the perception that their works share the experience of  language as an experience of impossibility and as resistance against the passage into modernity. To do so, I discuss Kafka’s parable “Beforethe Law”, which was compared by Benjamin to Jewish teachings and perceived by Derrida as an intrinsic condition of the reader: standing before a text whose access law is never given.Keywords: Language, deconstruction, judaismCarla Rodrigues é professora do Departamento de Filosofia da UFRJ (PPGF/IFCS/UFRJ, doutora e mestre em Filosofia (PUC-Rio; realizou pesquisa de pós-doutorado (IEL/Unicamp como bolsista PDJ/CNPq. É vice-coordenadora do Khôra – laboratório de filosofias da alteridade (UFRJ/CNPq e do GT Desconstrução, linguagem e alteridade (ANPOF. É autora, entre outros, de Coreografias do feminino (Ed. Mulheres, 2009 e Duas palavras sobre o feminino – hospitalidade e responsabilidade, sobre ética e política em Derrida (NAU Editora/Faperj, 2013.carla@ifcs.ufrj.br 

  19. Walter Benjamin ja lugemismõnu / Aija Sakova-Merivee

    Index Scriptorium Estoniae

    Sakova-Merivee, Aija, 1980-

    2014-01-01

    Arvustus: Benjamin, Walter. Lapsepõlv Berliinis 1900. aasta paiku : valik esseid. II / Walter Benjamin ; saksa keelest tõlkinud Mati Sirkel ; koostanud ja järelsõna: Marek Tamm. Tallinn : Kultuurileht, 2014. (Loomingu raamatukogu ; 2014, nr. 9/11)

  20. Walter Benjamin ja lugemismõnu / Aija Sakova-Merivee

    Index Scriptorium Estoniae

    Sakova-Merivee, Aija, 1980-

    2014-01-01

    Arvustus: Benjamin, Walter. Lapsepõlv Berliinis 1900. aasta paiku : valik esseid. II / Walter Benjamin ; saksa keelest tõlkinud Mati Sirkel ; koostanud ja järelsõna: Marek Tamm. Tallinn : Kultuurileht, 2014. (Loomingu raamatukogu ; 2014, nr. 9/11)

  1. Benjamin y Wittgenstein en torno al lenguaje de los hombres

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    Kenneth Moreno May

    2015-01-01

    Full Text Available En este trabajo se confrontan las imágenes de Ludwig Wittgenstein y Walter Benjamin en torno al lenguaje; se toma como punto de partida el Tractatus Logico-Philosophicus de Wittgenstein, y otros textos de su obra madura, comparándolos con algunos textos de la juventud de Benjamin, entre los que resalta, Sobre el lenguaje en general y el lenguaje de los humanos. Los objetivos generales son dos: Por un lado, mostrar como ambos autores confluyen desde caminos diferentes hacia el mismo punto. Por otro lado, exponer la manera como Benjamin se adelanta al Wittgenstein maduro mostrando las conexiones del lenguaje y espiritualidad a través de lo que Benjamin llama “facultad mimética” de la naturaleza y del ser humano. A partir de esta reflexión se mantiene con Benjamin una postura crítica respecto a la obra del joven Wittgenstein.

  2. Benjamin & Schmitt: uma arqueologia da exceção Benjamin & Schmitt: an archeology of exception

    Directory of Open Access Journals (Sweden)

    Annie Dymetman

    2001-01-01

    Full Text Available Situados em pólos opostos da vida ideológica e cultural européia dos anos 20 e 30 do século passado, Walter Benjamin e Carl Schmitt são protagonistas em um complexo jogo de afinidade e repulsa no plano das suas concepções básicas, articuladas em torno do tema do excesso. A autora propõe uma hermenêutica do excesso.Situated at opposed poles of the ideological and cultural life in the twenties and thirties of the last century. Walter Benjamin and Carl Schmitt are protagonists in a complex play of affinity and repulsion on the level of their basic conceptions, which are built around the theme of excess. The author proposes an hermeneutic of excess.

  3. The Death and Life of Walter Benjamin

    Directory of Open Access Journals (Sweden)

    David Kishik

    2013-11-01

    Full Text Available What if Walter Benjamin actually made it to New York as he was escaping the Nazis, settling there for the rest of his long life? What if he was working on a sequel to his Arcades Project, translating his ideas about Paris, capital of the nineteenth century, to his new city and own epoch? And what if I inadvertently discovered the manuscript of this so-called Manhattan Project, and decided to write a study dedicated to the unearthed text? This paper offers a few reflections on, and quotations from, the book that I am currently, truly working on, which is an analysis of a phantom of a book, inspired by a real collection of reflections and quotations that were made in preparation for another book that was also never written.

  4. The Curious Case of Benjamin Button

    Institute of Scientific and Technical Information of China (English)

    李群干; 李春

    2010-01-01

    一个奇异的开始,注定了奇异的结束;一个魔幻的故事,谱写着非凡的人生;一个青春活泼的女孩,与传奇老小孩心灵相通,结下了牵挂一生的誓言,演绎了一出生离死别、百转千回的至情至爱的史诗。《返老还童》(The Curious Case of Benjamin Button),一个时空交错的故事,一个垂死弥留之际的人生追忆,一段跌宕冗长、历史沧桑的叙述,让读者嗅到了生命的凄凉,爱的无奈……

  5. Lenguaje y violencia entre Benjamin y Canetti

    OpenAIRE

    Esposito, Roberto

    2006-01-01

    En este artículo, se pone en cuestión el tópico según el cual habría una contraposición absoluta entre comunicación y violencia, entre lenguaje y poder. Este tópico está presente en el habla común y entre los filósofos, como es el caso de Arendt, Apel y Habermas. Para someterlo a revisión, Esposito se sirve de tres autores —Benjamin, Blanchot y Canetti— y va mostrando la progresión crítica que conduce hasta el autor de Masa y poder. Para Canetti, la violenc...

  6. NapA and NapB are the Aspergillus nidulans Nap/SET family members and NapB is a nuclear protein specifically interacting with importin alpha.

    Science.gov (United States)

    Araújo-Bazán, Lidia; Fernández-Martínez, Javier; Ríos, Vivian Maythe de Los; Etxebeste, Oier; Albar, Juan Pablo; Peñalva, Miguel Angel; Espeso, Eduardo Antonio

    2008-03-01

    In eukaryotic cells, importin alpha is the major carrier for transport protein cargoes into the nucleus. We characterize here kapA, the single Aspergillus nidulans gene encoding an importin alpha. Using an affinity approach, we identify six potential interactors of KapA(50), a deleted version of KapA lacking the autoinhibitory importin-beta-binding domain. One such interactor is NapB, the A. nidulans orthologue of Saccharomyces cerevisiae Vps75p, a histone chaperone member of the Nap/SET family of proteins that additionally plays a cytosolic role in vacuolar protein sorting. NapB, but not its close relative NapA (the A. nidulans orthologue of yeast Nap1p) interacts directly with KapA(50) in pull down assays, despite the fact that NapB does not contain a classical nuclear localization sequence. NapB is a nuclear protein which exits nuclei at the onset of mitosis when two simultaneous mechanisms might be acting, the partial disassembly of the nuclear pore complexes and as yet unidentified posttranslational modification of NapB. The mitotic cytosolic localization of NapB might facilitate its putative role in the sorting of protein cargoes to the vacuole. In addition, we show that NapB and the mitotic B-type cyclin NimE compete for in vitro binding to KapA.

  7. Antimicrobial activity from endophytic fungi Arthrinium state of Apiospora montagnei Sacc. and Papulaspora immersa

    Directory of Open Access Journals (Sweden)

    Henrique Pereira Ramos

    2010-06-01

    Full Text Available Papulaspora immersa and Arthrinium state of Apiospora montagnei Sacc. were isolated from the roots of Smallanthus sonchifolius (yacón. The crude extracts from their cultures inhibited the growth of Staphylococcus aureus, Kocuria rhizophila, Pseudomonas aeruginosa and Escherichia coli. The more relevant results were observed in the ethyl acetate extract from P immersa against P aeruginosa (90 µg/mL and ethyl acetate extract from Arthrinium state of A montagnei Sacc. against P aeruginosa (160 µg/mL. The two endophytic fungi isolated from yacón roots as well as their antimicrobial activity detected in the crude extracts cultures were being reported for the first time.Mesmo havendo grandes investimentos, a resistência a fármacos continua sendo um grave problema de saúde pública. Produtos naturais têm prevalecido como a maior fonte de novas drogas e muitos deles são isolados de sistemas simbióticos: microorganismos-plantas. Os fungos endofíticos Papulaspora immersa e Arthrinium state of Apiospora montagnei Sacc. foram isolados de raízes de Smallanthus sonchifolius (yacón. Extratos de culturas destes fungos apresentaram atividade antibacteriana frente Staphylococcus aureus, Kocuria rhizophila, Pseudomonas aeruginosa e Escherichia coli, sendo as mais relevantes observadas nas frações acetato de etila provenientes dos fungos P. immersa e Arthrinium state of Apiospora montagnei Sacc. frente a P. aeruginosa, apresentando CIM de 90µg/mL e 160µg/mL, respectivamente.

  8. A new variety of Pholiota microspora (Berk. Sacc. (Agaricales from Nepal

    Directory of Open Access Journals (Sweden)

    MAHESH K. ADHIKARI

    2014-10-01

    Full Text Available In the fall of late rainy season 2011, a new Pholiota (Fr. P. Kumm. (Agaricales, Strophariaceae was collected in the Quercus forest of Phulchowki (Kathmandu valley along the trial line, on the dead log at an altitude of 2600m. The specimen gathered was quite small. It was brought to laboratory and cultivated in NARC, Pathology laboratory, Lalitpur. The mushroom has been identified as Pholiota microspora (Berk. Sacc. var. himalensis var. nov..

  9. Evaluation of Refractivity Profiles from CHAMP and SAC-C GPS Radio Occultation

    Science.gov (United States)

    Poli, Paul; Ao, Chi On; Joiner, Joanna; delaTorreJuarez, Manuel; Hoff, Raymond

    2002-01-01

    The GeoForschungsZentrum's Challenging Minisatellite Payload for Geophysical Research and Application (CHAMP, Germany-US) and the Comision Nacional de Actividades Especiales' Satelite de Aplicaciones Cientificas-C (SAC-C, Argentina-US) missions are the first missions to carry a second-generation Blackjack Global Positioning System (GPS) receiver. One of the new features of this receiver is its ability to sense the lower troposphere closer to the surface than the proof-of-concept GPS Meteorology experiment (GPS/MET). Since their launch, CHAMP and SAC-C have collected thousands of GPS radio occultations, representing a wealth of measurements available for data assimilation and Numerical Weather Prediction (NWP). In order to evaluate the refractivity data derived by the Jet Propulsion Laboratory (JPL) from raw radio occultation measurements, we use Data Assimilation Office (DAO) 6-hour forecasts as an independent state of the atmosphere. We compare CHAMP and SAC-C refractivity (processed by JPL) with refractivity calculated from the DAO global fields of temperature, water vapor content and humidity. We show statistics of the differences as well as histograms of the differences.

  10. Influence of YEA-SACC 1026 Probiotic on Meat Quality in Chicken Broilers

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    Ionel TOADER

    2017-05-01

    Full Text Available The use of probiotics, as fodder supplement for chickens, could stimulate meat quality that is a very important criterion especially for human consumption markets. The study had in view the effects of powdery YEA-SACC 1026 probiotic on meat quality in chicken broilers. There were studied 75 meat chickens of Ross-308 hybrid grouped on three lots of 25 capita/lot during an experimental period of 42 days. In the mixed fodder of experimental lots was added powdery YEA-SACC 1026 probiotic in proportion of 0.1% in lot L1(E and in proportion of 0.25% in lot L2(E. In the experiment end, were effected control slaughtering of 5 chickens per each lot, to establish the meat quality by trenching and meat chemical composition. After YEA-SACC 1026 probiotic administration, as fodder supplement, the chicken meat quality was improved by increasing the weight of superior quality meat in carcass. The obtained results confirm the favourable effects of probiotics on chicken meat production and its quality

  11. Promoting alertness with a short nap during a night shift.

    Science.gov (United States)

    Sallinen, M; Härmä, M; Akerstedt, T; Rosa, R; Lillqvist, O

    1998-12-01

    The use of a short (nap in improving alertness during the early morning hours in the first night shift was examined under laboratory conditions. The study contained four experimental, non-consecutive night shifts with a nap of either 50 or 30 min at 01.00 or 04.00 hours. An experimental night shift without a nap served as a control condition. Each experimental shift was followed by daytime sleep. Fourteen experienced male shift workers went through all of the experimental conditions. The results showed that the naps improved the ability to respond to visual signals during the second half of the night shift. Physiological sleepiness was alleviated by the early naps, as measured 50 min after awakening, but not at the end of the shift. Subjective sleepiness was somewhat decreased by the naps. The naps produced sleep inertia which lasted for about 10-15 min. Daytime sleep was somewhat impaired by the 50 min naps. The study shows that a nap shorter than 1 h is able to improve alertness to a certain extent during the first night shift.

  12. Performance Sustainment of Two Man Crews during 87 Hours of Extended Wakefulness with Stimulants and Napping

    Science.gov (United States)

    2009-02-01

    Repeated Test of Sustained Wakefulness (RTSW) .........................................................17  Polysomnography (PSG...N ap 19 Polysomnography (PSG) Nap Effects. A 2-hour nap was provided to determine its effects on restoring performance. During this nap, PSG

  13. Do night naps impact driving performance and daytime recovery sleep?

    Science.gov (United States)

    Centofanti, Stephanie A; Dorrian, Jillian; Hilditch, Cassie J; Banks, Siobhan

    2017-02-01

    Short, nighttime naps are used as a fatigue countermeasure in night shift work, and may offer protective benefits on the morning commute. However, there is a concern that nighttime napping may impact upon the quality of daytime sleep. The aim of the current project was to investigate the influence of short nighttime naps (sleep. Thirty-one healthy subjects (aged 21-35 y; 18 females) participated in a 3-day laboratory study. After a 9-h baseline sleep opportunity (22:00h-07:00h), subjects were kept awake the following night with random assignment to: a 10-min nap ending at 04:00h plus a 10-min nap at 07:00h; a 30-min nap ending at 04:00h; or a no-nap control. A 40-min driving simulator task was administered at 07:00h and 18:30h post-recovery sleep. All conditions had a 6-h daytime recovery sleep opportunity (10:00h-16:00h) the next day. All sleep periods were recorded polysomnographically. Compared to control, the napping conditions did not significantly impact upon simulated driving lane variability, percentage of time in a safe zone, or time to first crash on morning or evening drives (p>0.05). Short nighttime naps did not significantly affect daytime recovery total sleep time (p>0.05). Slow wave sleep (SWS) obtained during the 30-min nighttime nap resulted in a significant reduction in SWS during subsequent daytime recovery sleep (psleep following a night shift. Further investigation is needed to examine the optimal timing, length or combination of naps for reducing performance decrements on the morning commute, whilst still preserving daytime sleep quality. Copyright © 2015 Elsevier Ltd. All rights reserved.

  14. The experience of a Power Nap Center in the largest city of Brazil

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    Rogerio Santos-Silva

    2016-07-01

    Full Text Available We evaluated the frequency of naps and features of nappers who took a nap in a Power Nap Center located in downtown area of São Paulo. Company database was retrospectively analyzed and 4.625 naps were evaluated (January–December 2014. Most naps (57% lasted 30 min. 33% of subjects took a nap more than once a week (73% male. Progressive growth in the number of naps across the months was observed (January=110 to December=505. Results suggest that the society is sleep deprived and taking a nap during the day could be an important strategy to improve quality of life and increase productivity.

  15. Daytime napping associated with increased symptom severity in fibromyalgia syndrome

    NARCIS (Netherlands)

    Theadom, Alice; Cropley, Mark; Kantermann, Thomas

    2015-01-01

    Background: Previous qualitative research has revealed that people with fibromyalgia use daytime napping as a coping strategy for managing symptoms against clinical advice. Yet there is no evidence to suggest whether daytime napping is beneficial or detrimental for people with fibromyalgia. The purp

  16. Napájecí zdroje SELV

    OpenAIRE

    Friedl, Martin

    2008-01-01

    Cílem této diplomové práce bylo prostudovat požadované vlastnosti napájecích zdrojů SELV využívaných pro elektrická zařízení třídy III. V první části diplomové práce jsou shrnuty obecné poznatky o zdrojích. Především jsou zde rozebrány spínané zdroje SELV, jejich nadproudové, přepěťové a tepelné ochrany a možnosti řešení zdrojů SELV z hlediska požadované izolační bezpečnosti. Druhá část se zabývá konkrétním návrhem napájecího zdroje SELV 230VAC/24VDC s výstupním výkonem do 70W, jeho realizací...

  17. Walter Benjamin, historia cultural y fotografía

    Directory of Open Access Journals (Sweden)

    Maria Isabel Zapata Villamil

    2004-06-01

    Full Text Available In this article we will see that Walter Benjamin's construction of a concept of history is not based only on thinkers like Marx, Freud or Nietzsche. For Benjamin, certain works of art were sources of great inspiration. Besides pointing out this wide range of sources, my interest is in highlighting Benjamin’sinterest in images as sources. Benjamin considers iconography, mass production of art and technical aspects of photographic reproduction.//A lo largo de este artículo veremos cómo Walter Benjamin no se basará únicamente en pensadores como Marx, Freud y Nietzsche para construir su concepción de la historia. Para él serán también fuentes de inspiración fundamental algunas obras artísticas. Además de destacar esta amplia gama de fuentes mi interés es resaltar su acercamiento a estas últimas, principalmente con relación a las imágenes. Para referirse a ellas Benjamin considerará: La interpretación de lo iconográfico, la consideración del arte de masas y el estudio de la técnica reproductiva.

  18. Bakhtin and Benjamin: On Goethe and Other Matters

    Directory of Open Access Journals (Sweden)

    Tatiana Bubnova

    2015-11-01

    Full Text Available This article re-examines the affinities and differences between the thought of Bakhtin and Benjamin. Both are important to that branch of contemporary philosophy which analyzes the destinies of the 20th century and belong to the present-day post-secular epoch. Both understand our world by reviewing our lived experiences, to find elements that help us evaluate it and provide an orientation for our present situation. There are similarities in the reception of their ideas. In Latin America, Bakhtin and Benjamin are frequently interpreted in a political sense and serve as a basis for thinking about historical events and the facts of contemporary culture. The works of Benjamin are more frequently published, disseminated, and commented upon than those of Bakhtin. The main focus of this article is to study how Goethe served as a catalyst or pivot for the particular illuminations of both thinkers. In this perspective, Bakhtin and Benjamin are seen as two communicating vessels, despite their differences on questions of language, the role that Kant plays in their thinking, or the texts that interested them. Bakhtin’s materialistic conception of language is quite opposed to the messianic mysticism of Benjamin.

  19. Walter Benjamin: un melanconico allievo di Aby Warburg

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    Marco Bertozzi

    2012-05-01

    Full Text Available Walter Benjamin tried to get in touch with Panofsky and the Warburg’s circle, but the attempt failed. This article examines the chapter on melancholy of Benjamin’s The Origin of the German Tragic Drama (1928 and his main sources, i. e. Warburg’s essay Pagan-Antique Prophecy in Words and Images in the Age of Luther (1920 and Panofsky-Saxl’s work Dürers Melencolia I (1923. Benjamin interpreted the melancholy of the German Tragic Drama as a jump back to the deadly sin of sloth: he saw the saturnine melancholy under the sign of the medieval acedia.

  20. The use of caffeine versus prophylactic naps in sustained performance.

    Science.gov (United States)

    Bonnet, M H; Gomez, S; Wirth, O; Arand, D L

    1995-02-01

    Previous studies have shown that performance during sleep loss is improved by prophylactic naps as a function of varying nap length. Based on single-dose caffeine studies, a similar dose-response effect has been hypothesized on performance, alertness and mood during sleep loss. The present study compared the effects of repeated versus single-dose administration of caffeine and varying amounts of sleep taken prior to sleep loss on performance, mood and physiological measures during 2 nights and days of sleep loss. A total of 140 normal, young adult males participated at one of two study sites. Ninety-eight subjects at one site were randomly assigned to one of four nap conditions (0, 2, 4 or 8 hours) and 42 subjects at the second site were assigned to one of four caffeine conditions. After a normal baseline night of sleep and morning baseline tests of performance, mood and nap latency, subjects in the nap groups returned to bed at noon, 1600 hours, 1800 hours or not at all. Bedtimes were varied so that all naps ended at 2000 hours. Subjects in the caffeine groups received either a single 400-mg dose of caffeine at 0130 hours each night or repeated doses of 150 or 300 mg every 6 hours starting at 0130 hours on the 1st night of sleep loss. A placebo control group (no nap and placebo administered every 6 hours on the repeated caffeine schedule) was run at both sites.(ABSTRACT TRUNCATED AT 250 WORDS)

  1. Napping reverses increased pain sensitivity due to sleep restriction.

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    Brice Faraut

    Full Text Available To investigate pain sensitivity after sleep restriction and the restorative effect of napping.A strictly controlled randomized crossover study with continuous polysomnography monitoring was performed.Laboratory-based study.11 healthy male volunteers.Volunteers attended two three-day sessions: "sleep restriction" alone and "sleep restriction and nap". Each session involved a baseline night of normal sleep, a night of sleep deprivation and a night of free recovery sleep. Participants were allowed to sleep only from 02:00 to 04:00 during the sleep deprivation night. During the "sleep restriction and nap" session, volunteers took two 30-minute naps, one in the morning and one in the afternoon.Quantitative sensory testing was performed with heat, cold and pressure, at 10:00 and 16:00, on three areas: the supraspinatus, lower back and thigh. After sleep restriction, quantitative sensory testing revealed differential changes in pain stimuli thresholds, but not in thermal threshold detection: lower back heat pain threshold decreased, pressure pain threshold increased in the supraspinatus area and no change was observed for the thigh. Napping restored responses to heat pain stimuli in the lower back and to pressure stimuli in the supraspinatus area.Sleep restriction induces different types of hypersensitivity to pain stimuli in different body areas, consistent with multilevel mechanisms, these changes being reversed by napping. The napping restorative effect on pain thresholds result principally from effects on pain mechanisms, since it was independent of vigilance status.

  2. CHAOS-a model of the Earth's magnetic field derived from CHAMP, Orsted, and SAC-C magnetic satellite data

    DEFF Research Database (Denmark)

    Olsen, Nils; Luhr, H.; Sabaka, T.J.;

    2006-01-01

    We have derived a model of the near-Earth magnetic field (up to spherical harmonic degree n= 50 for the static field, and up to n = 18 for the first time derivative) using more than 6.5 yr of high-precision geomagnetic measurements from the three satellites Orsted, CHAMP and SAC-C taken between...

  3. Comparison of Iron-Binding Ability Between Thr70-NapA and Ser70-NapA of Helicobacter pylori.

    Science.gov (United States)

    Shan, Weiran; Kung, Hsiang-Fu; Ge, Ruiguang

    2016-06-01

    The neutrophil-activating protein (NapA) of Helicobacter pylori (H. pylori), with DNA-binding and iron seizing properties, is a fundamental virulence factor involved in H. pylori-related diseases. Compared with Ser70-NapA strain, Thr70-NapA strain is more intimately correlated with iron-deficiency anemia. To investigate whether two types of proteins differ in iron-binding ability, mutated Thr70-NapA and Ser70-NapA strains were established. Isothermal titration calorimetry (ITC) method was conducted to measure the binding between the NapA protein and Fe(2+) . The structural changes of NapA protein were also tested during iron interaction by fast protein liquid chromatography (FPLC) and circular dichroism (CD) methods. DNA-binding assay was performed for evaluate the affinity of both mutated and wild types of NapA with DNA. Mutated Thr70-NapA had higher iron-binding ability than wild Ser70-NapA. The structural stability of Thr70-NapA was disrupted and became more active along with the rising concentration of Fe(2+) , whereas no similar association was observed between Ser70-NapA and Fe(2+) level. When the iron/protein molar ratio ranged from 10 to 20, both Ser70-NapA and Thr70-NapA displayed weaker DNA-binding ability. Thr70-NapA has much stronger ability to sequester ferrous ion compared with Ser70-NapA in H. pylori. In addition, the DNA-binding property of NapA is dependent upon the Fe(2+) concentration. © 2015 John Wiley & Sons Ltd.

  4. The NapF protein of the Escherichia coli periplasmic nitrate reductase system: demonstration of a cytoplasmic location and interaction with the catalytic subunit, NapA.

    Science.gov (United States)

    Nilavongse, Arjaree; Brondijk, T Harma C; Overton, Tim W; Richardson, David J; Leach, Emily R; Cole, Jeffrey A

    2006-11-01

    The periplasmic nitrate reductase of Escherichia coli is important during anaerobic growth in low-nitrate environments. The nap operon encoding this nitrate reductase comprises seven genes including a gene, napF, that encodes a putative cytoplasmic iron-sulphur protein of uncertain subcellular location and function. In this study, N-terminal sequence analysis, cell fractionation coupled with immunoblotting and construction of LacZ and PhoA fusion proteins were used together to establish that NapF is located in the E. coli cytoplasm. A bacterial two-hybrid protein-protein interaction system was used to demonstrate that NapF interacted in the cytoplasm with the terminal oxidoreductase NapA, but that it did not self-associate or interact with other electron-transport components of the Nap system, NapC, NapG or NapH, or with another cytoplasmic component, NapD. NapF, purified as a His(6)-tagged protein, exhibited spectral properties characteristic of an iron-sulphur protein. This protein was able to pull down NapA from soluble extracts of E. coli. A growth-based assay for NapF function in intact cell cultures was developed and applied to assess the effect of mutation of a number of conserved amino acids. It emerged that neither a highly conserved N-terminal double-arginine motif, nor a conserved proline motif, is essential for NapF-dependent growth. The combined data indicate that NapF plays one or more currently unidentified roles in the post-translational modification of NapA prior to the export of folded NapA via the twin-arginine translocation pathway into the periplasm.

  5. Benjamin Franklin's Evolving Views on Race and Ethnicity

    Science.gov (United States)

    Lapham, Steven S.; Saunders, Andrew

    2005-01-01

    More telling than his negative comments about Germans' shortcomings, was Benjamin Franklin's early attitude to slavery. In the 1730s, Franklin's newspaper, the Philadelphia Gazette, carried advertisements for black slaves, and he himself apparently participated in the slave trade, acting at the very least as the contact man for buyers and sellers.…

  6. Genius or Dynamic Learner? Benjamin Franklin's Path to Greatness

    Science.gov (United States)

    Marcum, James W.

    2008-01-01

    While the remarkable accomplishments of Benjamin Franklin are unparalleled, the means of their attainment can be considered more accessible to ordinary people and not necessarily attributable to a special genius. The steady development of Franklin's knowledge and skills is traced in light of a new model of "dynamic learning," which is a method…

  7. Benjamin Franklin, William Hewson and the Craven Street bones

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    Simon Hillson

    1998-11-01

    Full Text Available Renovation of the house in London where Benjamin Franklin lived has led to the discovery of the remains of a late eighteenth-century anatomy school. Investigations by bioarchaeologists from the Institute are revealing William Hewson's remarkable contribution to the development of anatomical science.

  8. A new resolution of the Judy Benjamin problem

    NARCIS (Netherlands)

    Romeijn, J.-W.; Douven, I.

    2011-01-01

    Van Fraassen's Judy Benjamin problem has generally been taken to show that not all rational changes of belief can be modelled in a probabilistic framework if the available update rules are restricted to Bayes's rule and Jeffrey's generalization thereof. But alternative rules based on distance functi

  9. Electron transport to periplasmic nitrate reductase (NapA) of Wolinella succinogenes is independent of a NapC protein.

    Science.gov (United States)

    Simon, Jörg; Sänger, Monica; Schuster, Stephan C; Gross, Roland

    2003-07-01

    The rumen bacterium Wolinella succinogenes grows by respiratory nitrate ammonification with formate as electron donor. Whereas the enzymology and coupling mechanism of nitrite respiration is well known, nitrate reduction to nitrite has not yet been examined. We report here that intact cells and cell fractions catalyse nitrate and chlorate reduction by reduced viologen dyes with high specific activities. A gene cluster encoding components of a putative periplasmic nitrate reductase system (napA, G, H, B, F, L, D) was sequenced. The napA gene was inactivated by inserting a kanamycin resistance gene cassette. The resulting mutant did not grow by nitrate respiration and did not reduce nitrate during growth by fumarate respiration, in contrast to the wild type. An antigen was detected in wild-type cells using an antiserum raised against the periplasmic nitrate reductase (NapA) from Paracoccus pantotrophus. This antigen was absent in the W. succinogenes napA mutant. It is concluded that the periplasmic nitrate reductase NapA is the only respiratory nitrate reductase in W. succinogenes, although a second nitrate-reducing enzyme is apparently induced in the napA mutant. The nap cluster of W. succinogenes lacks a napC gene whose product is thought to function in quinol oxidation and electron transfer to NapA in other bacteria. The W. succinogenes genome encodes two members of the NapC/NirT family, NrfH and FccC. Characterization of corresponding deletion mutants indicates that neither of these two proteins is required for nitrate respiration. A mutant lacking the genes encoding respiratory nitrite reductase (nrfHA) had wild-type properties with respect to nitrate respiration. A model of the electron transport chain of nitrate respiration is proposed in which one or more of the napF, G, H and L gene products mediate electron transport from menaquinol to the periplasmic NapAB complex. Inspection of the W. succinogenes genome sequence suggests that ammonia formation from

  10. Reduction of nitrate in Shewanella oneidensis depends on atypical NAP and NRF systems with NapB as a preferred electron transport protein from CymA to NapA.

    Science.gov (United States)

    Gao, Haichun; Yang, Zamin K; Barua, Soumitra; Reed, Samantha B; Romine, Margaret F; Nealson, Kenneth H; Fredrickson, James K; Tiedje, James M; Zhou, Jizhong

    2009-08-01

    In the genome of Shewanella oneidensis, a napDAGHB gene cluster encoding periplasmic nitrate reductase (NapA) and accessory proteins and an nrfA gene encoding periplasmic nitrite reductase (NrfA) have been identified. These two systems seem to be atypical because the genome lacks genes encoding cytoplasmic membrane electron transport proteins, NapC for NAP and NrfBCD/NrfH for NRF, respectively. Here, we present evidence that reduction of nitrate to ammonium in S. oneidensis is carried out by these atypical systems in a two-step manner. Transcriptional and mutational analyses suggest that CymA, a cytoplasmic membrane electron transport protein, is likely to be the functional replacement of both NapC and NrfH in S. oneidensis. Surprisingly, a strain devoid of napB encoding the small subunit of nitrate reductase exhibited the maximum cell density sooner than the wild type. Further characterization of this strain showed that nitrite was not detected as a free intermediate in its culture and NapB provides a fitness gain for S. oneidensis to compete for nitrate in the environments. On the basis results from mutational analyses of napA, napB, nrfA and napBnrfA in-frame deletion mutants, we propose that NapB is able to favor nitrate reduction by routing electrons to NapA exclusively.

  11. Uut ja vana Tänapäevalt / Krista Kumberg

    Index Scriptorium Estoniae

    Kumberg, Krista

    2003-01-01

    Kirjastuselt "Tänapäev" 2002. a. ilmunud eesti lastekirjandust: Arder, Ott. Metsapoolne : [luuletused]; Tanner, Oskar, pseud. Kati, päkapikk ja Prominent : [jutustus]; Salu, Kristel. Verdi ja Fred, ehk, Sullerite juhtumised : [jutustus

  12. GPS radio occultation with CHAMP and SAC-C: global monitoring of thermal tropopause parameters

    Directory of Open Access Journals (Sweden)

    T. Schmidt

    2005-01-01

    Full Text Available In this study the global lapse-rate tropopause (LRT pressure, temperature, potential temperature, and sharpness are discussed based on Global Positioning System (GPS radio occultations (RO from the German CHAMP (CHAllenging Minisatellite Payload and the U.S.-Argentinian SAC-C (Satelite de Aplicaciones Cientificas-C satellite missions. Results with respect to seasonal variations are compared with operational radiosonde data and ECMWF (European Centre for Medium-Range Weather Forecast operational analyses. Results on the tropical quasi-biennial oscillation (QBO are updated from an earlier study. CHAMP RO data are available continuously since May 2001 with on average 150 high resolution temperature profiles per day. SAC-C data are available for several periods in 2001 and 2002. In this study temperature data from CHAMP for the period May 2001-December 2004 and SAC-C data from August 2001-October 2001 and March 2002-November 2002 were used, respectively. The bias between GPS RO temperature profiles and radiosonde data was found to be less than 1.5K between 300 and 10hPa with a standard deviation of 2-3K. Between 200-20hPa the bias is even less than 0.5K (2K standard deviation. The mean deviations based on 167699 comparisons between CHAMP/SAC-C and ECMWF LRT parameters are (-2.1±37.1hPa for pressure and (0.1±4.2K for temperature. Comparisons of LRT pressure and temperature between CHAMP and nearby radiosondes (13230 resulted in (5.8±19.8hPa and (-0.1±3.3K, respectively. The comparisons between CHAMP/SAC-C and ECMWF show on average the largest differences in the vicinity of the jet streams with up to 700m in LRT altitude and 3K in LRT temperature, respectively. The CHAMP mission generates the first long-term RO data set. Other satellite missions will follow (GRACE, COSMIC, MetOp, TerraSAR-X, EQUARS generating together some thousand temperature profiles daily.

  13. Bakhtin e Benjamin: sobre Goethe e outras questões

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    Tatiana Bubnova

    2015-11-01

    Full Text Available Este artigo reexamina as afinidades e as diferenças entre o pensamento de Bakhtin e Benjamin. Ambos são importantes para aquele ramo da filosofia contemporânea que analisa os destinos do século XX e pertencem à época atual pós-secular. Ambos compreendem nosso mundo por meio do procedimento de revisão de nossas experiências de vida, a fim de encontrar elementos que nos ajudem a avaliá-la e fornecer uma orientação para nossa situação atual. Há semelhanças na recepção de suas ideias. Na América Latina, Bakhtin e Benjamin são frequentemente interpretados num sentido político e servem como base para se refletir sobre acontecimentos históricos e fatos da cultura contemporânea. Os trabalhos de Benjamin são mais frequentemente publicados, disseminados e comentados do que aqueles de Bakhtin. O foco principal deste artigo é estudar como Goethe serviu de catalizador ou pivô para as iluminações particulares desses dois pensadores. Nessa perspectiva, Bakhtin e Benjamin são vistos como vasos comunicantes, a despeito de suas diferenças em questões de linguagem, do papel que Kant desempenha em seus pensamentos ou dos textos que interessaram a ambos. A concepção materialista de linguagem de Bakhtin opõe-se bastante ao misticismo messiânico de Benjamin.

  14. Practice and nap schedules modulate children's motor learning.

    Science.gov (United States)

    Ren, Jie; Guo, Wei; Yan, Jin H; Liu, Guanmin; Jia, Fujun

    2016-01-01

    Night- or day-time sleep enhances motor skill acquisition. However, prominent issues remained about the circadian (time-of-day) and homeostatic (time since last sleep) effects of sleep on developmental motor learning. Therefore, we examined the effects of nap schedules and nap-test-intervals (NTIs) on the learning of finger tapping sequences on computer keyboards. Children aged 6-7, 8-9, and 10-11 years explicitly acquired the short and long tapping orders that share the same movement strings (4-2-3-1-4, 4-2-3-1-4-2-3-1-4). Following a constant 8- or 10-hr post-learning period in one of the four NTIs (2, 4, 5, 7 hr), children in the morning napping groups, the afternoon napping groups, or the waking group performed the original long sequence in retention test (4-2-3-1-4-2-3-1-4) and the mirrored-order sequence in transfer test (1-3-2-4-1-3-2-4-1). Age and treatment differences in the movement time (MT, ms) and sequence accuracy (SA, %) were compared during skill learning and in retrieval tests. Results suggest that practice or nap affects MT and SA in a greater extent for the younger learners than for the older learners. The circadian effects might not change nap-based skill learning. Importantly, the longer NTIs resulted in superior retention performance than the shorter ones, suggesting that children require a relatively longer post-nap period to form motor memory. Finally, nap-based motor learning was more marked in skill retention than in skill transfer. Brain development may play an important role in motor learning. Our discussion centers on memory consolidation and its relevance for skill acquisition from early to late childhood.

  15. Electrophysiological correlates of cognition improve with nap during sleep deprivation.

    Science.gov (United States)

    Panjwani, Usha; Ray, Koushik; Chatterjee, Abhirup; Bhaumik, Sangeet; Kumar, Sanjeev

    2010-02-01

    The efficacy of a 30-min nap as a countermeasure in the reduction of cognitive decline following 24 h of sleep deprivation (SD) on subjective sleepiness scales, event-related potential (ERP) P300, and contingent negative variation (CNV) was evaluated. The experiment was performed in three sessions on different days between 7 and 8 a.m. on nine normal, healthy males, of age 25-30 years: Session 1. Baseline recordings; Session 2, after one night's total sleep deprivation, and; Session 3, after 1 week of Session 1, following one night's sleep deprivation along with a 30-min nap opportunity between 1.00 and 3.00 a.m. Subjective sleepiness scores increased after SD as compared to baseline, but reduced significantly after nap (P peak latency of ERP following SD (16%, P peak latency after SD (18%) which decreased with the use of nap (12.5%) (P time increased following SD (39.3%) and decreased with the use of nap (24%) (P peak latencies and M1, and M2 amplitudes were observed. It was concluded that a 30-min nap, between 1.00 and 3.00 a.m. during night SD, reduces the cognitive decline following 24 h of SD in terms of its electro-physiological correlates. The study is of applied value in optimization of cognitive performance in professions demanding night work schedules.

  16. MECHANISM OF FUSARIUM TRICINCTUM (CORDA SACC. SPORE INACTIVATION BY CHLORINE DIOXIDE

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    Zhao Chen

    2015-06-01

    Full Text Available The mechanism of Fusarium tricinctum (Corda Sacc. spore inactivation by chlorine dioxide (ClO2 was investigated. During F. tricinctum spore inactivation by ClO2, protein, DNA, and metal ion leakage, enzyme activity, and cell ultrastructure were examined. Protein and DNA leakages were not detected, while there were metal ion leakages of K+, Ca2+, and Mg2+, which were well-correlated with the inactivation rate. The enzyme activities of glucose-6-phosphate dehydrogenase, citrate synthase, and phosphofructokinase were inhibited and were also well-correlated with the inactivation rate. Electron micrographs showed the ultrastructural modifications of spores and demonstrated that spores were heavily distorted and collapsed from their regular structure. Spore surface damage and disruption in inner components was also severe. The metal ion leakage, the inhibition of enzyme activities, and the damage of spore structure were significant in F. tricinctum spore inactivation by ClO2.

  17. Isolation and fusion of protoplasts from the phytopathogenic fungus Sclerotium rolfsii (Sacc.

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    Sikandar Hayat

    2010-03-01

    Full Text Available Sclerotium rolfsii (Sacc. is a serious plant pathogenic fungus and lacks perfect (basidial stage in production. Protoplast fusion technology was employed to reconstruct fusants from this fungus. Two strains designated as A and R were used. Maximum protoplast yields of 3.8x10(5 /g mycelia and 2.8x10(5 /g mycelia were formed in strains A and R respectively. Osmotic stabilizer sucrose 1M gave maximum yield. Lysing enzyme at the rate of 15mg/ml was found best for yield. Fusion of protoplasts from strains A and R was carried out in fusion media containing PEG 4000 30% (w/v with 0.2mM CaCl2. Four fusants F1, F2, F3 and F4 were recovered. Morphological, physiological and pathogenic characters of fusants were compared with parent strains on carrots, beans and tomato.

  18. Nap sleep preserves associative but not item memory performance.

    Science.gov (United States)

    Studte, Sara; Bridger, Emma; Mecklinger, Axel

    2015-04-01

    Many studies have shown that sleep improves memory performance, and that even short naps during the day are beneficial. Certain physiological components of sleep such as spindles and slow-wave-sleep are thought to be particularly important for memory consolidation. The aim of this experiment was to reveal the role of naps for hippocampus-dependent associative memory (AM) and hippocampus-independent item memory (IM) alongside their corresponding ERP old/new effects. Participants learnt single words and word-pairs before performing an IM- and an AM-test (baseline). One group was subsequently allowed to nap (∼90min) while the other watched DVDs (control group). Afterwards, both groups performed a final IM- and AM-test for the learned stimuli (posttest). IM performance decreased for both groups, while AM performance decreased for the control group but remained constant for the nap group, consistent with predictions concerning the selective impact of napping on hippocampus-dependent recognition. Putative ERP correlates of familiarity and recollection were observed in the IM posttest, whereas only the later recollection-related effect was present in the AM test. Notably, none of these effects varied with group. Positive correlations were observed between spindle density during slow-wave-sleep and AM posttest performance as well as between spindle density during non-REM sleep and AM baseline performance, showing that successful learning and retrieval both before and after sleep relates to spindle density during nap sleep. Together, these results speak for a selective beneficial impact of naps on hippocampus-dependent memories.

  19. Benjamin sociographe de la mémoire collective ? Benjamin, sociographer of collective memory ?

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    Marc Berdet

    2009-07-01

    Full Text Available Walter Benjamin est-il un sociographe de la mémoire collective  ? Une comparaison des thèmes morphologique, phénoménologique et politique de la sociologie halbwachsienne de la mémoire et de l’écriture benjaminienne de Paris permet de répondre à cette question. Morphologique : il s’agit principalement de voir comment la mémoire collective peut se cristalliser dans son espace urbain. Phénoménologique : le processus de remémoration suppose la rencontre d’un pluralisme temporel et de représentations collectives dans des images auxquelles cet espace urbain n’est pas étranger. Politique : un type de remémoration doit être mis à profit par cette image pour le progrès de la civilisation, notamment contre le fascisme. Au terme de ce cheminement, apparaît le rôle décisif de la métathéorie pour la théorie qui fait voir la différence profonde entre nos deux auteurs que le combat épistémologique qu’il entraînait avait rapprochés. Car si la mémoire collective est réifiée dans la ville, c’est selon une représentation singulière du temps dont elle-même découle. Or c’est précisément au nom d’une représentation du temps que le sociologue français et le philosophe allemand veulent fonder d’une part la science, d’autre part l’action.Is Walter Benjamin a sociographer of collective memory ? A comparison between the morphological, phenomenological and political topics of Halbwach’s sociology of memory and Benjamin’s writing on Paris allows us to answer this question. Morphological: it is mainly a question of seeing how collective memory can crystallize in its urban setting. Phenomenological: the process of recollection supposes an encounter between a temporal pluralism and collective representations in images from which that urban space is not disconnected. Political: a type of recollection must be put to use by this image for the progress of civilization, especially against Fascism. At the end of

  20. Les modalités du temps chez Benjamin Franklin

    Directory of Open Access Journals (Sweden)

    Elise Marienstras

    2010-01-01

    Full Text Available La renommée multiséculaire de Benjamin Franklin tient surtout à sa qualité d'homme des Lumières. Cet article s'intéresse à l'extrême complexité de sa pensée sur le temps comme concept, comme mode de vie, comme outil pour s'enrichir, et comme vision générale du progrès du genre humain.The long-lasting fame of Benjamin Franklin rests principally on his characteristics as a scientist and a philosopher of the Enlightenment. This article raises the question of Franklin's conception of time and examines his numerous uses of « time » as a concept, as a way of living, as a means to obtain wealth, as a general vision of the progress of mankind.

  1. An art history of means: Arendt-Benjamin

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    Jae Emerling

    2009-12-01

    Full Text Available Transmissibility is an essential concept for any discourse on historiography and aesthetics. In fact, this concept traverses the contemporary impasse of art historical critical practice. Although explicitly associated with Walter Benjamin, the entirety of Hannah Arendt’s work on art and history is premised on transmissibility as well. It allows them to conceive a space of history from within the aesthetic, the world of artifice. This essay reads Benjamin and Arendt alongside and against one other in order to rethink art and history without resorting to eschatology or the histrionics of political theology. In creating this virtual historiography—Arendt-Benjamin—it conceives transmissibility as an aesthetic-historiographic concept that renders an openness between past and future, poiesis and aisthesis. Writing the history of art becomes the creation of a passage between what-has-been and artifice; it becomes the opening of history into life, an event of recollection.

  2. Exact Solutions of the Generalized Benjamin-Bona-Mahony Equation

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    Xun Liu

    2010-01-01

    Full Text Available We apply the theory of Weierstrass elliptic function to study exact solutions of the generalized Benjamin-Bona-Mahony equation. By using the theory of Weierstrass elliptic integration, we get some traveling wave solutions, which are expressed by the hyperbolic functions and trigonometric functions. This method is effective to find exact solutions of many other similar equations which have arbitrary-order nonlinearity.

  3. Benjamin's conception of language and Adorno's aesthetic theory

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    Rodrigo Duarte

    Full Text Available According to the theory of language of the young Benjamin, the primary task of language isn't the communication of contents, but to express itself as a "spiritual essence" in which also men take part. That conception according to which language would be a medium to signification of something outside it leads to a necessary decrease of its original strength and is thus denominated by Benjamin bürgerlich. The names of human language are remainders of an archaic state, in which things weren't yet mute and had their own language. Benjamin suggests also that all the arts remind the original language of things, as they make objects "speak" in form of sounds, colors, shapes etc. That relationship between arts as reminders of the "language of things" and the possible reconciliation of mankind with itself and with nature has been developed by Theodor Adorno in several of his writings, specially in the Aesthetic Theory, where the artwork is ultimately conceived as a construct pervaded by "language" in the widest meaning - not in the "bourgeois" sense.

  4. A global model of mantle conductivity derived from 5 years of CHAMP, Orsted, and SAC-C magnetic data

    DEFF Research Database (Denmark)

    Kuvshinov, A.; Olsen, Nils

    2006-01-01

    We present a global 1-D conductivity model which is obtained by analysis of five years ( 2001 - 2005) of simultaneous magnetic data from the three satellites Orsted, CHAMP and SAC-C. After removal of core and crustal fields as predicted by a recent field model we used non-polar scalar and vector...... model which is rather similar to models derived from ground-based data....

  5. Molecular evolution and species-specific expansion of the NAP members in plants

    Institute of Scientific and Technical Information of China (English)

    Kai Fan,; Hao Shen,; Noreen Bibi,; Feng Li,; Shuna Yuan,; Ming Wang; Xuede Wang

    2015-01-01

    The NAP (NAC-Like, Activated by AP3/PI) subfamily is one of the important plant-specific transcription factors, and controls many vital biological processes in plants. In the current study, 197 NAP proteins were identified from 31 vascular plants, but no NAP members were found in eight non-vascular plants. Al NAP proteins were phylogenetical y classified into two groups (NAP I and NAP II), and the origin time of the NAP I group might be relatively later than that of the NAP II group. Furthermore, species-specific gene duplications, caused by segmental duplication events, resulted in the expansion of the NAP subfamily after species-divergence. Different groups have different expansion rates, and the NAP group preference was found during the expansion in plants. Moreover, the expansion of NAP proteins may be related to the gain and loss of introns. Besides, functional divergence was limited after the gene duplication. Abscisic acid (ABA) might play an important role in leaf senescence, which is regulated by NAP subfamily. These results could lay an important foundation for expansion and evolutionary analysis of NAP subfamily in plants.

  6. Molecular evolution and species-specific expansion of the NAP members in plants.

    Science.gov (United States)

    Fan, Kai; Shen, Hao; Bibi, Noreen; Li, Feng; Yuan, Shuna; Wang, Ming; Wang, Xuede

    2015-08-01

    The NAP (NAC-Like, Activated by AP3 /PI) subfamily is one of the important plant-specific transcription factors, and controls many vital biological processes in plants. In the current study, 197 NAP proteins were identified from 31 vascular plants, but no NAP members were found in eight non-vascular plants. All NAP proteins were phylogenetically classified into two groups (NAP I and NAP II), and the origin time of the NAP I group might be relatively later than that of the NAP II group. Furthermore, species-specific gene duplications, caused by segmental duplication events, resulted in the expansion of the NAP subfamily after species-divergence. Different groups have different expansion rates, and the NAP group preference was found during the expansion in plants. Moreover, the expansion of NAP proteins may be related to the gain and loss of introns. Besides, functional divergence was limited after the gene duplication. Abscisic acid (ABA) might play an important role in leaf senescence, which is regulated by NAP subfamily. These results could lay an important foundation for expansion and evolutionary analysis of NAP subfamily in plants. © 2015 Institute of Botany, Chinese Academy of Sciences.

  7. Dynamics of rogue waves on multisoliton background in the Benjamin Ono equation

    Indian Academy of Sciences (India)

    YUN-KAI LIU; BIAO LI

    2017-04-01

    For the Benjamin Ono equation, the Hirota bilinear method and long wave limit method are applied to obtain the breathers and the rogue wave solutions. Bright and dark rogue waves exist in the Benjamin Ono equation, and their typical dynamics are analysed and illustrated. The semirational solutions possessing rogue waves and solitons are also obtained, and demonstrated by the three-dimensional figures. Furthermore, the hybrid of rogue wave and breather solutions are also found in the Benjamin Ono equation.

  8. Use of NAP gene to manipulate leaf senescence in plants

    Science.gov (United States)

    Gan, Susheng; Guo, Yongfeng

    2013-04-16

    The present invention discloses transgenic plants having an altered level of NAP protein compared to that of a non-transgenic plant, where the transgenic plants display an altered leaf senescence phenotype relative to a non-transgenic plant, as well as mutant plants comprising an inactivated NAP gene, where mutant plants display a delayed leaf senescence phenotype compared to that of a non-mutant plant. The present invention also discloses methods for delaying leaf senescence in a plant, as well as methods of making a mutant plant having a decreased level of NAP protein compared to that of a non-mutant plant, where the mutant plant displays a delayed leaf senescence phenotype relative to a non-mutant plant. Methods for causing precocious leaf senescence or promoting leaf senescence in a plant are also disclosed. Also disclosed are methods of identifying a candidate plant suitable for breeding that displays a delayed leaf senescence and/or enhanced yield phenotype.

  9. Sonochemical synthesis of zeolite NaP from clinoptilolite.

    Science.gov (United States)

    Behin, Jamshid; Kazemian, Hossein; Rohani, Sohrab

    2016-01-01

    In the present work, natural clinoptilolite was converted to zeolite NaP using ultrasonic energy, in which the transformation time shortened remarkably. The effect of post-synthesis treatment using conventional hydrothermal was also investigated. The synthesized powders were characterized by XRD, TGA/DTA, SEM, and PSD analysis. The results showed that, increasing the sonication time (energy) has no significant effect on the product's morphology. The crystallinity of the synthesized samples increased slightly with increasing sonication time, but their yield remained relatively unchanged. Furthermore, post-synthesis hydrothermal treatment showed very little influence on properties of the final product. Because the ultrasonic irradiation creates acoustic cavitation cracks on the surface structure of clinoptilolite particulates and increases the concentration of soluble alumino-silicate species, which favors the prevailing super-saturation, crystallization and crystal growth of zeolite NaP happen faster. The particles of zeolite NaP synthesized by ultrasonic irradiation consist of small crystallites of uniform size.

  10. The histone chaperones Vps75 and Nap1 form ring-like, tetrameric structures in solution

    DEFF Research Database (Denmark)

    Bowman, Andrew; Hammond, Colin M; Stirling, Andrew

    2014-01-01

    NAP-1 fold histone chaperones play an important role in escorting histones to and from sites of nucleosome assembly and disassembly. The two NAP-1 fold histone chaperones in budding yeast, Vps75 and Nap1, have previously been crystalized in a characteristic homodimeric conformation. In this study...... fold histone chaperones. The tetramerisation of NAP-1 fold histone chaperones may act to shield acidic surfaces in the absence of histone cargo thus providing a 'self-chaperoning' type mechanism....

  11. Answer to Benjamin Dessus or how the ideology can cloud the best minds; Reponse a Benjamin Dessus ou Comment l'ideologie peut obscurcir les meilleurs esprits

    Energy Technology Data Exchange (ETDEWEB)

    Nifenecker, H

    2009-01-15

    The author aims to clarify the declarations of the article published by Benjamin Dessus, in Mediapart. He accuses him of manipulating data in order to find faults with the french nuclear program and more particularly the electric heating. The author then details and explains many affirmations of Benjamin Dessus: the CO{sub 2} contain of the electricity, which electric production must be taken into account, the nuclear and the energy independence, the french petroleum consumption, the central electric heating, the nuclear reactor power adjustment, the prices. The article of Benjamin Dessus is also provided in annex. (A.L.B.)

  12. Effects of some ecological factors on Dothichiza populea Sacc. et Br. growth

    Directory of Open Access Journals (Sweden)

    Pap Predrag L.

    2008-01-01

    Full Text Available The aim of the present work was to evaluate the mycelial growth and fruiting vigor of Dothichiza populea Sacc. et Br. under various temperatures, pH values, and light regimes. Effect of temperature on the fungus growth was examined by growing isolates in polythermostat at 5°C to 30°C. The best mycelial growth occurred at 20°C, while at 30°C it was inhibited. Fruiting of the fungus was not observed at 5°C, 25°C, and 30°C. However, the best fruiting of the isolates appeared at 20°C. The influence of different pH of the cultivation medium (3,5-10 on the fungus isolates growth was also evaluated. Optimal pH for the fungus growth ranged between 6 and 8, while formation of reproductive organs occurred at all pH values. The influence of two light regimes (light/dark regime and continuous dark on the fungus growth was also studied. Obtained results showed that mycelial growth and fruiting of the fungus were considerably better under the light/dark regime.

  13. Variación patogénica y fuentes de resistencia a Colletotrichum lindemuthianum Sacc & magn Scrib., patógeno de la antracnosis del frijol, en Colombia Variación patogénica y fuentes de resistencia a Colletotrichum lindemuthianum (Sacc & Magn) Scrib., patógeno de la antracnosis del fríjol, en Colombia

    National Research Council Canada - National Science Library

    Cobo S. Felipe; Pastor Corrales Marcial A

    1987-01-01

    ... patogénica de aislamientos colombianos de Colletotrichum lindemuthianum (Sacc& Magn) Scrib. También se evaluó germoplasma de frijol con grano de color comercial con el objetivo de identificar...

  14. "Un paysage hanté, intense comme l'opium". Ville et notion de paysage selon Siegfried Kracauer et Walter Benjamin

    DEFF Research Database (Denmark)

    Reeh, Henrik

    2001-01-01

    bykultur, filosofi, Walter Benjamin, Siegfried Kracauer, Berlin, Paris, landskab, begrebet bylandskab......bykultur, filosofi, Walter Benjamin, Siegfried Kracauer, Berlin, Paris, landskab, begrebet bylandskab...

  15. Benjamin's conception of language and Adorno's aesthetic theory

    Directory of Open Access Journals (Sweden)

    Rodrigo Duarte

    2005-12-01

    Full Text Available According to the theory of language of the young Benjamin, the primary task of language isn't the communication of contents, but to express itself as a "spiritual essence" in which also men take part. That conception according to which language would be a medium to signification of something outside it leads to a necessary decrease of its original strength and is thus denominated by Benjamin bürgerlich. The names of human language are remainders of an archaic state, in which things weren't yet mute and had their own language. Benjamin suggests also that all the arts remind the original language of things, as they make objects "speak" in form of sounds, colors, shapes etc. That relationship between arts as reminders of the "language of things" and the possible reconciliation of mankind with itself and with nature has been developed by Theodor Adorno in several of his writings, specially in the Aesthetic Theory, where the artwork is ultimately conceived as a construct pervaded by "language" in the widest meaning - not in the "bourgeois" sense.De acordo com a teoria da linguagem do jovem Benjamin, a tarefa primordial da linguagem não é a comunicação de Conteúdos, mas expressar a si própria como uma "essência espiritual", da qual também o gênero humano toma parte. Essa concepção, de acordo com a qual a linguagem seria um médium para a significação de algo fora dela leva necessariamente a uma diminuição de sua potência originária e é, portanto, chamada por Benjamin burguesa (bürgerlich. Os nomes da linguagem humana são resquícios de um estado arcaico, no qual as coisas ainda não eram mudas e tinham sua própria linguagem. Benjamin sugere também que todas as artes rememoram a linguagem originária das coisas, na medida em que fazem os objetos "falarem" em forma de sons, cores, formas etc. Essa relação entre arte como resquício da "linguagem das coisas" e a possível reconciliação do gênero humano consigo próprio e com a

  16. Sleep to the beat : A nap favours consolidation of timing

    NARCIS (Netherlands)

    Verweij, Ilse M; Onuki, Yoshiyuki; Van Someren, Eus J W; Van der Werf, Ysbrand D

    Growing evidence suggests that sleep is important for procedural learning, but few studies have investigated the effect of sleep on the temporal aspects of motor skill learning. We assessed the effect of a 90-min day-time nap on learning a motor timing task, using 2 adaptations of a serial

  17. Sleep to the beat : A nap favours consolidation of timing

    NARCIS (Netherlands)

    Verweij, Ilse M; Onuki, Yoshiyuki; Van Someren, Eus J W; Van der Werf, Ysbrand D

    2016-01-01

    Growing evidence suggests that sleep is important for procedural learning, but few studies have investigated the effect of sleep on the temporal aspects of motor skill learning. We assessed the effect of a 90-min day-time nap on learning a motor timing task, using 2 adaptations of a serial intercept

  18. Napping Reduces Emotional Attention Bias during Early Childhood

    Science.gov (United States)

    Cremone, Amanda; Kurdziel, Laura B. F.; Fraticelli-Torres, Ada; McDermott, Jennifer M.; Spencer, Rebecca M. C.

    2017-01-01

    Sleep loss alters processing of emotional stimuli in preschool-aged children. However, the mechanism by which sleep modifies emotional processing in early childhood is unknown. We tested the hypothesis that a nap, compared to an equivalent time spent awake, reduces biases in attention allocation to affective information. Children (n = 43;…

  19. Taking a nap is the new white-knuckle ride.

    Science.gov (United States)

    Bates, Jane

    2016-09-07

    I awoke from my afternoon slumber, stretched like a cat on a warm pillow, slept some more, then opened my eyes and contemplated the sheer joy of an afternoon nap in summer, lulled to sleep by the sun and the sound of bees buzzing and doves cooing….

  20. Conceito de barbárie em Walter Benjamin.

    OpenAIRE

    Marinho, Clayton Rodrigo da Fonsêca

    2015-01-01

    Programa de Pós-Graduação em Filosofia. Departamento de Filosofia, Instituto de Filosofia, Artes e Cultura, Universidade Federal de Ouro Preto. Esta pesquisa busca apresentar um conceito de barbárie na obra do filósofo Walter Benjamin. Quando, em seu ensaio “Experiência e Pobreza” (1933), ele diz da necessidade de pensar um “conceito novo e positivo de barbárie”, tomamos a sério a tarefa de conceituá-la. Para isso, adotamos um paradigma estético de pensamento, a “constelação”, a fim de che...

  1. Walter Benjamin: A Philosophy of Today for Tomorrow :

    OpenAIRE

    camargo, David

    1994-01-01

    Al igual que el aleph de la tradición judaica, donde en un punto se reune el pasado, el presente y el futuro de todas las cosas, y el mundo donde se reune la totalidad de memoria, vida y esperanza, deseo retomar un punto para señalar la totalidad. Tal vez a la manera como el propio Benjamin trabajaba la 'imagen dialéctica', expresión del contenido total en la superficie inintencional de lo particular: "En su teoría, cada 'idea', cada construcción a partir de lo particular, era autosuficiente....

  2. Vasserman ja Keerend rahvusvahelistel näitustel / Benjamin Vasserman

    Index Scriptorium Estoniae

    Vasserman, Benjamin

    2001-01-01

    17. VI-2. IX Kanada Quebeci provintsis Trois-Riviere'is toimuval II rahvusvahelisel graafikabiennaalil osaleb Benjamin Vasserman 7 graafilise lehega. Peapreemia - Tomoya Uchida graafiline sari "Nest". Valiknäituse "Triennial of One Hundred Cities" esimesel väljapanekul Dzierzoniowis osalesid Avo Keerend ja B. Vasserman, A. Keerendi töö "Vastasseis XII" on avaldatud näituse bukleti esikaanel. Itaalias Pisas 7.-14. VII toimunud III ülemaailmsel väikegraafika ja -maali näitusel "ITART 2001" pälvis B. Vassermani "Finalist" diplomi ja õiguse osaleda finalistide preemianäitusel Livornos.

  3. Walter Benjamin e Paris: individualidade e trabalho intelectual

    Directory of Open Access Journals (Sweden)

    Renato Ortiz

    2000-05-01

    Full Text Available Este artigo é uma leitura do texto de Walter Benjamin Paris capital do século XIX. A partir do conjunto de anotações que Benjamin faz de diversos livros consultados, principalmente durante sua pesquisa na Bibliothèque Nationale, o autor pretende trabalhar a noção de indivíduo vinculando-a a dois temas. Primeiro, a emergência do flâneur como tradução do espírito de mobilidade que se inaugura com a modernidade. Para isso a discussão sobre a noção de espaço, particularmente no que diz respeito a cidade de Paris, é importante. O flâneur surge assim como um indivíduo desenraizado que se locomove através do espaço urbano remodelado. Segundo, uma aproximação entre o ato da flânerie e o trabalho intelectual. Considerando a flânerie como uma atividade intelectual o autor mostra como os temas do distanciamento e da construção do objeto são relevantes tanto para o flâneur-detetive quanto para a reflexão nas ciências sociais.This paper is an interpretation of Walter Benjamins Paris, Capital of the 19th Century. Based on the notes Benjamin made on several books he read, mainly during his research at the Bibliotèque Nationale, the author discusses the notion of the individual linking it to two themes. First, to the emergence of the flâneur as a translation of the spirit of mobility which starts with modernity. The discussion on the notion of space, especially where it concerns Paris, is essential for this analysis. The flâneur is seen as an uprooted individual who moves around the remodelled urban space. Second, to the proximity between the act of flânerie and that of intellectual work. Taking flânerie to be intellectual activity, the author shows how the themes of the distancing and the construction of the object are relevant, both to the detective-flâneur and to the reflection in social sciences.

  4. Vasserman ja Keerend rahvusvahelistel näitustel / Benjamin Vasserman

    Index Scriptorium Estoniae

    Vasserman, Benjamin

    2001-01-01

    17. VI-2. IX Kanada Quebeci provintsis Trois-Riviere'is toimuval II rahvusvahelisel graafikabiennaalil osaleb Benjamin Vasserman 7 graafilise lehega. Peapreemia - Tomoya Uchida graafiline sari "Nest". Valiknäituse "Triennial of One Hundred Cities" esimesel väljapanekul Dzierzoniowis osalesid Avo Keerend ja B. Vasserman, A. Keerendi töö "Vastasseis XII" on avaldatud näituse bukleti esikaanel. Itaalias Pisas 7.-14. VII toimunud III ülemaailmsel väikegraafika ja -maali näitusel "ITART 2001" pälvis B. Vassermani "Finalist" diplomi ja õiguse osaleda finalistide preemianäitusel Livornos.

  5. Magic, Mimesis, and Revolutionary Praxis: Illuminating Walter Benjamin's Rhetoric of Redemption.

    Science.gov (United States)

    DeChaine, D. Robert

    2000-01-01

    Outlines the rhetorical contributions of Walter Benjamin, who attempted to develop a social critique arguing for the decisive function of critical intervention. Suggests Benjamin's insights about the liberatory role of the engaged social agent warrant closer attention. Proposes his ideas provide useful avenues for examining contemporary texts and…

  6. Benjamin, Benson, and the Child's Gaze: Childhood Desire and Pleasure in the David Blaize Books

    Science.gov (United States)

    Tribunella, Eric L.

    2016-01-01

    Walter Benjamin's writings on children and their books reflect a desire to imagine different possibilities in perceiving and engaging with the world. Benjamin's child, like the flâneur, experiences a particular way of seeing unfettered by instrumentality and characterised by a sense of wonder, aimlessness of path or purpose, and keen interest in…

  7. The Way to Achieve Chinese Dream:Pragmatism of Benjamin Franklin

    Institute of Scientific and Technical Information of China (English)

    刘婕

    2016-01-01

    Benjamin Franklin is the Father of America. He is the pioneer of achieving the American dream. His pragmatism, which is the basis of American's values. The essay conclude the Benjamin Franklin's devotion on friendship, education, diplo-macy and writing in order to give some inspirations for us to achieve the Chinese dream.

  8. A Nap But Not Rest or Activity Consolidates Language Learning

    Science.gov (United States)

    Heim, Stefan; Klann, Juliane; Schattka, Kerstin I.; Bauhoff, Sonja; Borcherding, Gesa; Nosbüsch, Nicole; Struth, Linda; Binkofski, Ferdinand C.; Werner, Cornelius J.

    2017-01-01

    Recent evidence suggests that a period of sleep after a motor learning task is a relevant factor for memory consolidation. However, it is yet open whether this also holds true for language-related learning. Therefore, the present study compared the short- and long-term effects of a daytime nap, rest, or an activity task after vocabulary learning on learning outcome. Thirty healthy subjects were divided into three treatment groups. Each group received a pseudo-word learning task in which pictures of monsters were associated with unique pseudo-word names. At the end of the learning block a first test was administered. Then, one group went for a 90-min nap, one for a waking rest period, and one for a resting session with interfering activity at the end during which a new set of monster names was to be learned. After this block, all groups performed a first re-test of the names that they initially learned. On the morning of the following day, a second re-test was administered to all groups. The nap group showed significant improvement from test to re-test and a stable performance onto the second re-test. In contrast, the rest and the interference groups showed decline in performance from test to re-test, with persistently low performance at re-test 2. The 3 (GROUP) × 3 (TIME) ANOVA revealed a significant interaction, indicating that the type of activity (nap/rest/interfering action) after initial learning actually had an influence on the memory outcome. These data are discussed with respect to translation to clinical settings with suggestions for improvement of intervention outcome after speech-language therapy if it is followed by a nap rather than interfering activity. PMID:28559856

  9. A Nap But Not Rest or Activity Consolidates Language Learning

    Directory of Open Access Journals (Sweden)

    Stefan Heim

    2017-05-01

    Full Text Available Recent evidence suggests that a period of sleep after a motor learning task is a relevant factor for memory consolidation. However, it is yet open whether this also holds true for language-related learning. Therefore, the present study compared the short- and long-term effects of a daytime nap, rest, or an activity task after vocabulary learning on learning outcome. Thirty healthy subjects were divided into three treatment groups. Each group received a pseudo-word learning task in which pictures of monsters were associated with unique pseudo-word names. At the end of the learning block a first test was administered. Then, one group went for a 90-min nap, one for a waking rest period, and one for a resting session with interfering activity at the end during which a new set of monster names was to be learned. After this block, all groups performed a first re-test of the names that they initially learned. On the morning of the following day, a second re-test was administered to all groups. The nap group showed significant improvement from test to re-test and a stable performance onto the second re-test. In contrast, the rest and the interference groups showed decline in performance from test to re-test, with persistently low performance at re-test 2. The 3 (GROUP × 3 (TIME ANOVA revealed a significant interaction, indicating that the type of activity (nap/rest/interfering action after initial learning actually had an influence on the memory outcome. These data are discussed with respect to translation to clinical settings with suggestions for improvement of intervention outcome after speech-language therapy if it is followed by a nap rather than interfering activity.

  10. The concept of resistance in Benjamin and Adorno O conceito de resistência em Benjamin e Adorno

    Directory of Open Access Journals (Sweden)

    Natalia A. Morato Fernandes

    2007-05-01

    Full Text Available That work intends, with base in some texts of Theodor Adorno and of Walter Benjamin, to discuss the meaning of the “resistance” concepts and of “conformism” for such authors. These concepts are not elaborated in way explicit or systematic by both, to the opposite they are related subtlety the some aspects of the contemporary social life, as the disappearance of the experience, the decline of the narration, the loss of the sense of the history and the consequent suppression of the memory, the appearance of the cultural industry. Of that it sorts things out, explicit those concepts, especially when referred the those subjects, it helps us not only to understand the conception of Benjamin and Adorno, but also your judgements on the cultural scene of the beginning of the century - without, though, to intend to establish a model of what can be the resistance or the conformism. Keywords: Resistance. Conformism. Culture. Romances. School of Frankfurt. Este trabalho pretende, com base em alguns textos de Theodor Adorno e de Walter Benjamin, discutir o significado dos conceitos de “resistência” e de “conformismo” para tais autores. Esses conceitos não são elaborados de modo explícito ou sistemático por ambos; ao contrário, são sutilmente relacionados a alguns aspectos da vida social contemporânea, como o desaparecimento da experiência, o declínio da narração, a perda do sentido da história e a conseqüente supressão da memória, e o surgimento da indústria cultural. Dessa maneira, explicitar esses conceitos, especialmente quando referidos a essas questões, ajuda-nos não só a entender a concepção de Benjamin e de Adorno, mas também seus juízos sobre a cena cultural do início do século XX - sem, todavia, pretender estabelecer um modelo do que possa ser a resistência ou o conformismo. Palavras-chave: Resistência. Conformismo. Cultura. Romances. Escola de Frankfurt.

  11. Resolution of two native monomeric 90 kDa nitrate reductase active proteins from Shewanella gelidimarina and the sequence of two napA genes

    Energy Technology Data Exchange (ETDEWEB)

    Simpson, Philippa J.L. [School of Chemistry, University of Sydney, NSW 2006 (Australia); McKinzie, Audra A. [School of Medical Sciences (Pharmacology) and Bosch Institute, University of Sydney, NSW 2006 (Australia); Codd, Rachel, E-mail: rachel.codd@sydney.edu.au [School of Chemistry, University of Sydney, NSW 2006 (Australia); School of Medical Sciences (Pharmacology) and Bosch Institute, University of Sydney, NSW 2006 (Australia)

    2010-07-16

    Research highlights: {yields} Two monomeric 90 kDa nitrate reductase active proteins from Shewanella gelidimarina. {yields} Sequence of napA from napEDABC-type operon and napA from NapDAGHB-type operon. {yields} Isolation of NAP as NapA or NapAB correlated with NapA P47E amino acid substitution. -- Abstract: The reduction of nitrate to nitrite in the bacterial periplasm occurs in the 90 kDa NapA subunit of the periplasmic nitrate reductase (NAP) system. Most Shewanella genomes contain two nap operons: napEDABC and napDAGHB, which is an unusual feature of this genus. Two native, monomeric, 90 kDa nitrate reductase active proteins were resolved by hydrophobic interaction chromatography from aerobic cultures of Shewanella gelidimarina replete with reduced nitrogen compounds. The 90 kDa protein obtained in higher yield was characterized as NapA by electronic absorption and electron paramagnetic resonance spectroscopies and was identified by LC/MS/MS and MALDI-TOF/TOF MS as NapA from the napEDABC-type operon. The other 90 kDa protein, which was unstable and produced in low yields, was posited as NapA from the napDAGHB-type operon. Two napA genes have been sequenced from the napEDABC-type and napDAGHB-type operons of S. gelidimarina. Native NAP from S. putrefaciens was resolved as one NapA monomer and one NapAB heterodimer. Two amino acid substitutions in NapA correlated with the isolation of NAP as a NapA monomer or a NapAB heterodimer. The resolution of native, redox-active NapA isoforms in Shewanella provides new insight into the respiratory versatility of this genus, which has implications in bioremediation and the assembly of microbial fuel cells.

  12. Time-periodic solutions of the Benjamin-Ono equation

    Energy Technology Data Exchange (ETDEWEB)

    Ambrose , D.M.; Wilkening, Jon

    2008-04-01

    We present a spectrally accurate numerical method for finding non-trivial time-periodic solutions of non-linear partial differential equations. The method is based on minimizing a functional (of the initial condition and the period) that is positive unless the solution is periodic, in which case it is zero. We solve an adjoint PDE to compute the gradient of this functional with respect to the initial condition. We include additional terms in the functional to specify the free parameters, which, in the case of the Benjamin-Ono equation, are the mean, a spatial phase, a temporal phase and the real part of one of the Fourier modes at t = 0. We use our method to study global paths of non-trivial time-periodic solutions connecting stationary and traveling waves of the Benjamin-Ono equation. As a starting guess for each path, we compute periodic solutions of the linearized problem by solving an infinite dimensional eigenvalue problem in closed form. We then use our numerical method to continue these solutions beyond the realm of linear theory until another traveling wave is reached (or until the solution blows up). By experimentation with data fitting, we identify the analytical form of the solutions on the path connecting the one-hump stationary solution to the two-hump traveling wave. We then derive exact formulas for these solutions by explicitly solving the system of ODE's governing the evolution of solitons using the ansatz suggested by the numerical simulations.

  13. Maintenance of alertness and performance by a brief nap after lunch under prior sleep deficit.

    Science.gov (United States)

    Takahashi, M; Arito, H

    2000-09-15

    We examined the effects of a 15-min nap after lunch on subsequent alertness, performance, and autonomic function following a short sleep the preceding night. Subjects were 12 healthy students who had slept for only 4 hours the night before being tested. They experienced both nap and no-nap conditions in a counterbalanced order, at least a week apart. The nap condition included a 15-min nap opportunity (12:30-12:45) in bed with polygraphic monitoring. We measured the P300 event-related potential, subjective sleepiness (Visual Analog Scale), and electrocardiogram (ECG) at 10:00, 13:15, and 16:15, and task performance (logical reasoning and digit span) at 10:00, 11:30, 13:15, 14:45, 16:15, and 17:45. Mean home sleep measured by actigraphy was 3.5 hours under both conditions. At 13:15, the P300 latency after the nap was significantly shorter than after no nap, but its amplitude was not affected by napping. Subjective sleepiness at 13:15 and 14:45 was significantly lower, and accuracy of logical reasoning at 13:15 was significantly higher after the nap than after no nap. No other performance measures or the ECG R-R interval variability parameters differed significantly between the nap and no-nap conditions. Mean total sleep time during the nap was 10.2 min, and no stage 3 and 4 sleep was observed. The above results suggest that under prior sleep deficit, a 15-min nap during post-lunch rest maintains subsequent alertness and performance, particularly in the mid-afternoon.

  14. Dual Roles of Helicobacter pylori NapA in inducing and combating oxidative stress.

    Science.gov (United States)

    Wang, Ge; Hong, Yang; Olczak, Adriana; Maier, Susan E; Maier, Robert J

    2006-12-01

    Neutrophil-activating protein (NapA) has been well documented to play roles in human neutrophil recruitment and in stimulating host cell production of reactive oxygen intermediates (ROI). A separate role for NapA in combating oxidative stress within H. pylori was implied by studies of various H. pylori mutant strains. Here, physiological analysis of a napA strain was the approach used to assess the iron-sequestering and stress resistance roles of NapA, its role in preventing oxidative DNA damage, and its importance to mouse colonization. The napA strain was more sensitive to oxidative stress reagents and to oxygen, and it contained fourfold more intracellular free iron and more damaged DNA than the parent strain. Pure, iron-loaded NapA bound to DNA, but native NapA did not, presumably linking iron levels sensed by NapA to DNA damage protection. Despite its in vitro phenotype of sensitivity to oxidative stress, the napA strain showed normal (like that of the wild type) mouse colonization efficiency in the conventional in vivo assay. By use of a modified mouse inoculation protocol whereby nonviable H. pylori is first inoculated into mice, followed by (live) bacterial strain administration, an in vivo role for NapA in colonization efficiency could be demonstrated. NapA is the critical component responsible for inducing host-mediated ROI production, thus inhibiting colonization by the napA strain. An animal colonization experiment with a mixed-strain infection protocol further demonstrated that the napA strain has significantly decreased ability to survive when competing with the wild type. H. pylori NapA has unique and separate roles in gastric pathogenesis.

  15. Control of Colletotrichum gloeosporioides (penz. Sacc. In yellow passion fruit using Cymbopogon citratus essential oil

    Directory of Open Access Journals (Sweden)

    Nina Duarte Anaruma

    2010-03-01

    Full Text Available The use of antibiotics in agriculture is limited when compared to their applications in human and veterinary medicine. On the other hand, the use of antimicrobials in agriculture contributes to the drug resistance of human pathogens and has stimulated the search for new antibiotics from natural products. Essential oils have been shown to exert several biological activities including antibacterial and antifungal actions. The aim of this study was to determine the activity of 28 essential oils from medicinal plants cultivated at CPMA (Medicinal and Aromatic Plants Collection, CPQBA/UNICAMP, against Colletotrichum gloeosporioides (Penz. Sacc., the anthracnose agent in yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg, as well as evaluating their effect in the control of post-harvest decay. The oils were obtained by water-distillation using a Clevenger-type system and their minimal inhibitory concentrations (MIC determined by the micro-dilution method. According to the results, 15 of the 28 essential oils presented activity against Colletotrichum gloeosporioides, and the following four oils presented MIC values between 0.25 and 0.3 mg/mL: Coriandrum sativum, Cymbopogon citratus, Cymbopogon flexuosus and Lippia alba. The evaluation of Cymbopogon citratus essential oil in the control of post-harvest decay in yellow passion fruit showed that the disease index of the samples treated with the essential oil did not differ (P < 0.05 from that of the samples treated with fungicide. The present study shows the potential of Cymbopogon citratus essential oil in the control of the anthracnose agent in yellow passion fruit.

  16. Control of Colletotrichum gloeosporioides (penz.) Sacc. In yellow passion fruit using Cymbopogon citratus essential oil

    Science.gov (United States)

    Anaruma, Nina Duarte; Schmidt, Flávio Luís; Duarte, Marta Cristina Teixeira; Figueira, Glyn Mara; Delarmelina, Camila; Benato, liane Aparecida; Sartoratto, Adilson

    2010-01-01

    The use of antibiotics in agriculture is limited when compared to their applications in human and veterinary medicine. On the other hand, the use of antimicrobials in agriculture contributes to the drug resistance of human pathogens and has stimulated the search for new antibiotics from natural products. Essential oils have been shown to exert several biological activities including antibacterial and antifungal actions. The aim of this study was to determine the activity of 28 essential oils from medicinal plants cultivated at CPMA (Medicinal and Aromatic Plants Collection), CPQBA/UNICAMP, against Colletotrichum gloeosporioides (Penz.) Sacc., the anthracnose agent in yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg), as well as evaluating their effect in the control of post-harvest decay. The oils were obtained by water-distillation using a Clevenger-type system and their minimal inhibitory concentrations (MIC) determined by the micro-dilution method. According to the results, 15 of the 28 essential oils presented activity against Colletotrichum gloeosporioides, and the following four oils presented MIC values between 0.25 and 0.3 mg/mL: Coriandrum sativum, Cymbopogon citratus, Cymbopogon flexuosus and Lippia alba. The evaluation of Cymbopogon citratus essential oil in the control of post-harvest decay in yellow passion fruit showed that the disease index of the samples treated with the essential oil did not differ (P ≤ 0.05) from that of the samples treated with fungicide. The present study shows the potential of Cymbopogon citratus essential oil in the control of the anthracnose agent in yellow passion fruit. PMID:24031465

  17. Control of Colletotrichum gloeosporioides (penz.) Sacc. In yellow passion fruit using Cymbopogon citratus essential oil.

    Science.gov (United States)

    Anaruma, Nina Duarte; Schmidt, Flávio Luís; Duarte, Marta Cristina Teixeira; Figueira, Glyn Mara; Delarmelina, Camila; Benato, Liane Aparecida; Sartoratto, Adilson

    2010-01-01

    The use of antibiotics in agriculture is limited when compared to their applications in human and veterinary medicine. On the other hand, the use of antimicrobials in agriculture contributes to the drug resistance of human pathogens and has stimulated the search for new antibiotics from natural products. Essential oils have been shown to exert several biological activities including antibacterial and antifungal actions. The aim of this study was to determine the activity of 28 essential oils from medicinal plants cultivated at CPMA (Medicinal and Aromatic Plants Collection), CPQBA/UNICAMP, against Colletotrichum gloeosporioides (Penz.) Sacc., the anthracnose agent in yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg), as well as evaluating their effect in the control of post-harvest decay. The oils were obtained by water-distillation using a Clevenger-type system and their minimal inhibitory concentrations (MIC) determined by the micro-dilution method. According to the results, 15 of the 28 essential oils presented activity against Colletotrichum gloeosporioides, and the following four oils presented MIC values between 0.25 and 0.3 mg/mL: Coriandrum sativum, Cymbopogon citratus, Cymbopogon flexuosus and Lippia alba. The evaluation of Cymbopogon citratus essential oil in the control of post-harvest decay in yellow passion fruit showed that the disease index of the samples treated with the essential oil did not differ (P ≤ 0.05) from that of the samples treated with fungicide. The present study shows the potential of Cymbopogon citratus essential oil in the control of the anthracnose agent in yellow passion fruit.

  18. Análisis de la infección de Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. de frutos de aguacatero

    OpenAIRE

    Rodríguez-López,Édgar Saúl; Cárdenas-Soriano,Elizabeth; Hernández-Delgado, Sanjuana; Gutiérrez-Diez,Adriana; Mayek-Pérez,Netzahualcoyotl

    2013-01-01

    La patogénesis de Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. del estado de Michoacán, México se caracterizó en frutos de aguacatero (Persea americana L.) cultivar 'Hass'. El hongo causó los síntomas característicos de la enfermedad denominada 'antracnosis' a partir de los diez días después de la inoculación. La tasa de infección del hongo entre tratamientos fue significativamente diferente (p

  19. Susceptibilidad a Fusarium verticillioides (Sacc.) Nirenberg en la población de maíz MPB-FCA 8561

    OpenAIRE

    Peiretti-Uzal, Daniel Antonio; Nazar-Lovera, María Cristina; Biasutti-Valenzano, Carlos Alberto; Giorda-Lerda, Laura María

    2006-01-01

    Susceptibilidad a Fusarium verticillioides (Sacc.) Nirenberg en la población de maíz MPB-FCA 856. Se caracterizó la variabilidad genética de caracteres de la mazorca y susceptibilidad al desarrollo de la podredumbre de la mazorca (Fusarium verticillioides (Sacc.) Nirenberg) en la población de maíz MPB-FCA 856. En Córdoba, Argentina, durante la estación primavera verano 2004/2005, 120 medio hermanos, un híbrido resistente (HR) y otro susceptible (HS), fueron evaluados en un ensayo en bloques c...

  20. Susceptibilidad a fusarium verticillioides (sacc.) nirenberg en la población de maíz mpb-fca 856

    OpenAIRE

    Daniel Antonio Peiretti-Uzal; Mar\\u00EDa Cristina Nazar-Lovera; Carlos Alberto Biasutti-Valenzano; Laura Mar\\u00EDa Giorda-Lerda

    2007-01-01

    Susceptibilidad a Fusarium verticillioides (Sacc.) Nirenberg en la población de maíz MPB-FCA 856. Se caracterizó la variabilidad genética de caracteres de la mazorca y susceptibilidad al desarrollo de la podredumbre de la mazorca (Fusarium verticillioides (Sacc.) Nirenberg) en la población de maíz MPB-FCA 856. En Córdoba, Argentina, durante la estación primavera verano 2004/2005, 120 medio hermanos, un híbrido resistente (HR) y otro susceptible (HS), fueron evaluados e...

  1. Questioning "The Work of Art in the Age of Mechanical Reproduction": A Stroll around the Louvre after Reading Benjamin1

    Directory of Open Access Journals (Sweden)

    Jonathan Davis

    2008-01-01

    Full Text Available In this article I claim that Walter Benjamin's essay "The Work of Art in the Age of Mechanical Reproduction" merits renewed critical attention. Just as Dada had confronted art with anti-art, so Benjamin hoped his essay would confront aesthetics with an anti-aesthetic. I examine Benjamin's capsule history of the aura and show it to be misleading, criticize the essay's underdeveloped ontology of painting and sketch an alternative, and draw attention to the surprising proximity of Benjamin's notion of value to that of neoliberal thought. I conclude with a critique of Benjamin's cultural politics.

  2. Walter Benjamin's concept of aura and the cultural industry

    Directory of Open Access Journals (Sweden)

    Bráulio Santos Rabelo de Araújo

    2010-12-01

    Full Text Available Trata-se de uma análise do texto A obra de arte na era da reprodutibilidade técnica, de 1935, de Walter Benjamin, no qual o autor analisa as alterações provocadas pelas novas técnicas de produção artística na esfera da cultura, e desenvolve, como elemento principal, a tese de a reprodutibilidade técnica provocar a superação da aura pela obra de arte. Tendo como apoio o contraste do texto de Benjamin com o texto A indústria cultural: O esclarecimento como mistificação das massas, de Theodor Adorno e Max Horkheimer, de 1947, e a observação da produção do cinema, da música e do livro (artes necessariamente reprodutíveis, este artigo (a analisa a tese da superação do conceito de aura pela obra de arte na era da reprodutibilidade técnica, (b contrasta essa tese com a reflexão sobre indústria cultural de Adorno e Horkheimer e com as características da obra de arte produzida no decorrer do século 20 e início do século 21, e (c apresenta as contribuições que podem ser retiradas dessa análise para a atual reflexão a respeito dos impactos da Internet e das tecnologias digitais sobre a produção cultural contemporânea. Como resultado principal e do qual decorre outras conclusões, o artigo considera que as técnicas analisadas por Benjamin, apesar de terem tornado a obra de arte independente de um substrato único, não a emanciparam de seu caráter aurático. Os elementos centrais da aura (autenticidade e unicidade não foram superados, mas, ao contrário, adaptaram-se às mudanças técnicas, adaptação essa que ocorreu em torno da industrialização, a qual marcou a produção cultural no século 20.

  3. Napping Reverses Increased Pain Sensitivity Due to Sleep Restriction

    OpenAIRE

    Brice Faraut; Damien Léger; Terkia Medkour; Alexandre Dubois; Virginie Bayon; Mounir Chennaoui; Serge Perrot

    2015-01-01

    Study Objective To investigate pain sensitivity after sleep restriction and the restorative effect of napping. Design A strictly controlled randomized crossover study with continuous polysomnography monitoring was performed. Setting Laboratory-based study. Participants 11 healthy male volunteers. Interventions Volunteers attended two three-day sessions: “sleep restriction” alone and “sleep restriction and nap”. Each session involved a baseline night of normal sleep, a night of sleep deprivati...

  4. Spazi per pensare. Topografia e immagine in Warburg e Benjamin

    Directory of Open Access Journals (Sweden)

    Raoul Kirchmayr

    2012-05-01

    Full Text Available In the context of the late modernity, both Warburg and Benjamin put themselves on a borderline position. From that point of view, they show a common methodological and heuristic issue, consisting in creating “spaces for thinking” (Denkräume from where it would be possible to redraw in a newly conceived “topography” the metaphysical maps by means of which we have represented our world. This kind of critical operation requires a different focus on the relathionships between writing and image, space and time, and it cannot be separated from an experience (even in a biographical sense of “ownness” and “extraneity”. Thanks to this experience, the event of discovery outlines itself as an act of remembrance and, at the same time, as a promise for the future.

  5. On 'Shock:' The Artistic Imagination of Benjamin and Brecht

    Directory of Open Access Journals (Sweden)

    Mara Polgovsky Ezcurra

    2012-01-01

    Full Text Available “Shock” is perhaps the central concept of modernist aesthetics and Walter Benjamin its best known theorist. It has been well documented that Benjamin’s long-lasting friendship with Bertolt Brecht and the latter’s dramatic theory had a profound influence on his thinking about this notion. Brecht's techniques of interruption and juxtaposition in the practice of epic theater were in close relationship with Benjamin’s use of montage as a mechanism to “liberate” meaning. Despite Theodor Adorno’s and Gershom Scholem’s attempt to situate Benjamin’s thought in a different aesthetic tradition, Brecht’s understanding of Verfremdung (estrangement and Benjamin’s idea of “shock” are often deemed identical. In this paper I compare both concepts, looking at their points of coincidence and tension. I also relate their development to one of the most telling friendships in the history of twentieth-century philosophy.

  6. Benjamin Thompson, Count Rumford Count Rumford on the nature of heat

    CERN Document Server

    Brown, Sanborn C

    1967-01-01

    Men of Physics: Benjamin Thompson - Count Rumford: Count Rumford on the Nature of Heat covers the significant contributions of Count Rumford in the fields of physics. Count Rumford was born with the name Benjamin Thompson on March 23, 1753, in Woburn, Massachusetts. This book is composed of two parts encompassing 11 chapters, and begins with a presentation of Benjamin Thompson's biography and his interest in physics, particularly as an advocate of an """"anti-caloric"""" theory of heat. The subsequent chapters are devoted to his many discoveries that profoundly affected the physical thought

  7. Low altitude energetic electron lifetimes after enhanced magnetic activity as deduced from SAC-C and DEMETER data

    Directory of Open Access Journals (Sweden)

    S. Benck

    2010-03-01

    Full Text Available When flux enhancements of energetic electrons are produced as a consequence of geomagnetic storm occurrence, they tend to vanish gradually when the magnetic activity calms down and the fluxes decay to quiet-time levels. We use SAC-C and DEMETER low altitude observations to estimate the energetic electron lifetimes (E=0.16–1.4 MeV, L=1.6–5, B=0.22–0.46 G and compare the decay rates to those observed at high altitude. While crossing the radiation belts at high latitude, the SAC-C and DEMETER instruments sample particles with small equatorial pitch angles (αeq<18° for L>2.5 whereas the comparison is done with other satellite data measured mainly in the equatorial plane (for αeq>75°. While in the inner belt and in the slot region no significant lifetime differences are observed from the data sets with different αeq, in the outer belt, for the least energetic electrons (<500 keV, the lifetimes are up to ~3 times larger for the electrons with the equatorial pitch-angle close to the loss cone than for those mirroring near the equator. The difference decreases with increasing energy and vanishes for energies of about 1 MeV.

  8. Benjamin Fondane notebooks. Benjamin Fondane facing the History. About the Existential Monday. The Poem time, no. 14/2011, Editions Kedem, Tel Aviv, 243 p.

    Directory of Open Access Journals (Sweden)

    Speranţa Sofia MILANCOVICI

    2011-01-01

    Full Text Available Luna august reprezintă, pentru membrii sau colaboratorii Socièté d’Etudes Benjamin Fondane, momentul întâlnirii ştiinţifice anuale sub genericul Rencontres de Peyresq. Fiecare astfel de reuniune este succedată de apariţia unui volum critic realizat cu sprijinul Centre National du Livre – France. Este vorba despre seria deja cunoscutelor, în bibliografia de specialitate, Cahiers Benjamin Fondane.Volumul recent apărut poartă titlul Benjamin Fondane devant l’Histoire. Autour du Lundi existentiel. Au temps du Poème şi este cel de al paisprezecelea număr din seria caietelor.În îngrijirea energicei şi competentei preşedinte a Société d’Etudes Benjamin Fondane, prof. dr. Monique Jutrin, volumul propune spre lectură cercetătorilor de specialitate un corpus de eseuri critice grupate pe secţiuni: editorial, filosofie, poezie, opera în limba română a lui Benjamin Fundoianu, bibliografie de specialitate etc.

  9. Influence of LY294002 on protein kinase B expression in salivary adenoid cystic carcinoma (SACC) - 83 and SACC-LM cells%特异性抑制剂对腺样囊性癌细胞中蛋白激酶B表达的影响

    Institute of Scientific and Technical Information of China (English)

    杨鸣良; 沈磊; 孙长伏

    2006-01-01

    目的探讨特异性抑制剂LY294002对体外培养涎腺腺样囊性癌(SACC)细胞中蛋白激酶B(PKB)表达和转录水平的影响.方法经细胞培养后,应用Wester-blot和RT-PCR实验技术,用酶显法显色、EB染色,将实验数据进行配对t检验.结果SACC-83细胞PKB丝氨酸473(Ser473)的表达和转录水平显著低于SACC-LM细胞PKB(Ser473)的表达和转录水平(P<0.05);而经LY294002处理的细胞PKB(Ser473)的表达显著低于未经处理细胞PKB(Ser473)的表达(P<0.01),但两者转录水平差异无统计学意义(P>0.05).结论体外培养的SACC-83细胞PKB(Ser473)的蛋白表达和转录水平显著低于SACC-LM细胞;LY294002对体外培养细胞中的PKB(Ser473)蛋白表达有明显抑制作用.

  10. CM5, a pre-Swarm comprehensive geomagnetic field model derived from over 12 yr of CHAMP, Ørsted, SAC-C and observatory data

    DEFF Research Database (Denmark)

    Sabaka, Terence J.; Olsen, Nils; Tyler, Robert H.

    2015-01-01

    A comprehensive magnetic field model named CM5 has been derived from CHAMP, Orsted and SAC-C satellite and observatory hourly-means data from 2000 August to 2013 January using the Swarm Level-2 Comprehensive Inversion (CI) algorithm. Swarm is a recently launched constellation of three satellites ...

  11. Proposal to conserve the name Phomopsis citri H.S. Fawc. (Diaporthe citri), with a conserved type, against Phomopsis citri (Sacc.) Traverso & Spessa (Ascomycota, Diaporthales, Diaporthaceae)

    Science.gov (United States)

    The name Diaporthe citri applies to a fungus that causes a disease on Citrus known as melanose or stem end rot of mature fruit after harvest and occurs widely in North America and Asia. Initially described as the illegitimate Phomopsis citri H.S. Fawc. 1912, non P. citri (Sacc.) Traverso & Spessa 19...

  12. Pärt, Arvo. Cantus in memory of Benjamin Britten / Andrew Achenbach

    Index Scriptorium Estoniae

    Achenbach, Andrew

    1995-01-01

    Uuest heliplaadist "Pärt, Arvo. Cantus in memory of Benjamin Britten. BBC Northern Symphony Orchestra / Norman del Mar; BBC Symphony Orchestra / Gennady Rozhdestvensky". BBC Radio Classics CD BBCRD 9129 (71 minutes)

  13. Pärt, Arvo. Cantus in memory of Benjamin Britten / Andrew Achenbach

    Index Scriptorium Estoniae

    Achenbach, Andrew

    1995-01-01

    Uuest heliplaadist "Pärt, Arvo. Cantus in memory of Benjamin Britten. BBC Northern Symphony Orchestra / Norman del Mar; BBC Symphony Orchestra / Gennady Rozhdestvensky". BBC Radio Classics CD BBCRD 9129 (71 minutes)

  14. Benjamin Verdery teeb klassikast laheda show / Mari Hiiemäe

    Index Scriptorium Estoniae

    Hiiemäe, Mari

    2008-01-01

    Seitsmendate Eesti kitarrimuusikapäevade Fiesta de la Guitarra 2008 ja peaesinejast, USAst pärit kitarristist Benjamin Verdery'st (esineb 8. nov. Tallinnas Mederi saalis ja 9. nov. Vanemuise kammersaalis), festivalist

  15. Benjamin Schmidt, Inventing Exoticism: Geography, Globalism, and Europe’s Early Modern World

    Directory of Open Access Journals (Sweden)

    Wouter Ryckbosch

    2016-12-01

    Full Text Available Benjamin Schmidt, Inventing Exoticism: Geography, Globalism, and Europe’s Early Modern World (Philadelphia: University of Pennsylvania Press, 2015, 448 pp., isbn 978 0 8122 4646 9.

  16. Generalized solutions to the Benjamin-Ono equations in sense of Colombeau

    Institute of Scientific and Technical Information of China (English)

    金小刚; 杨建刚; 蔺杰

    2004-01-01

    This paper discusses the existence and uniqueness of the generalized solution in the sense of Colombeau to the Benjamin-Oho(B-O)equation and the relationship between the new generalized solution and the classical solution.

  17. Benjamin Verdery teeb klassikast laheda show / Mari Hiiemäe

    Index Scriptorium Estoniae

    Hiiemäe, Mari

    2008-01-01

    Seitsmendate Eesti kitarrimuusikapäevade Fiesta de la Guitarra 2008 ja peaesinejast, USAst pärit kitarristist Benjamin Verdery'st (esineb 8. nov. Tallinnas Mederi saalis ja 9. nov. Vanemuise kammersaalis), festivalist

  18. Dual Roles of Helicobacter pylori NapA in Inducing and Combating Oxidative Stress▿

    OpenAIRE

    Wang, Ge; Hong, Yang; Olczak, Adriana; Maier, Susan E.; Maier, Robert J.

    2006-01-01

    Neutrophil-activating protein (NapA) has been well documented to play roles in human neutrophil recruitment and in stimulating host cell production of reactive oxygen intermediates (ROI). A separate role for NapA in combating oxidative stress within H. pylori was implied by studies of various H. pylori mutant strains. Here, physiological analysis of a napA strain was the approach used to assess the iron-sequestering and stress resistance roles of NapA, its role in preventing oxidative DNA dam...

  19. The ADNP derived peptide, NAP modulates the tubulin pool: implication for neurotrophic and neuroprotective activities.

    Directory of Open Access Journals (Sweden)

    Saar Oz

    Full Text Available Microtubules (MTs, key cytoskeletal elements in living cells, are critical for axonal transport, synaptic transmission, and maintenance of neuronal morphology. NAP (NAPVSIPQ is a neuroprotective peptide derived from the essential activity-dependent neuroprotective protein (ADNP. In Alzheimer's disease models, NAP protects against tauopathy and cognitive decline. Here, we show that NAP treatment significantly affected the alpha tubulin tyrosination cycle in the neuronal differentiation model, rat pheochromocytoma (PC12 and in rat cortical astrocytes. The effect on tubulin tyrosination/detyrosination was coupled to increased MT network area (measured in PC12 cells, which is directly related to neurite outgrowth. Tubulin beta3, a marker for neurite outgrowth/neuronal differentiation significantly increased after NAP treatment. In rat cortical neurons, NAP doubled the area of dynamic MT invasion (Tyr-tubulin into the neuronal growth cone periphery. NAP was previously shown to protect against zinc-induced MT/neurite destruction and neuronal death, here, in PC12 cells, NAP treatment reversed zinc-decreased tau-tubulin-MT interaction and protected against death. NAP effects on the MT pool, coupled with increased tau engagement on compromised MTs imply an important role in neuronal plasticity, protecting against free tau accumulation leading to tauopathy. With tauopathy representing a major pathological hallmark in Alzheimer's disease and related disorders, the current findings provide a mechanistic basis for further development. NAP (davunetide is in phase 2/3 clinical trial in progressive supranuclear palsy, a disease presenting MT deficiency and tau pathology.

  20. David Benjamin Sherry摄影展在纽约举办

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    2009年9月10日至10月17日.摄影家David Benjamin Sherry摄影作品展在纽约Bellwether画廊举办。“我发誓.这里还有天赐的极品.美到极致,根本无法用言语形容。”这是摄影师David Benjamin Sherry最大的感慨。

  1. Experiência da transitoriedade: Walter Benjamin e a modernidade de Baudelaire

    Directory of Open Access Journals (Sweden)

    Luciano Gatti

    2009-06-01

    Full Text Available O artigo examina a abordagem feita por Walter Benjamin da concepção de modernidade apresentada pelo poeta e crítico de arte Charles Baudelaire. Após o exame da ideia de beleza moderna nos textos de crítica de Baudelaire, são abordados os motivos da preferência de Benjamin pela apresentação da modernidade na poesia de Baudelaire, particularmente no poema alegórico "Le cygne". Por fim, o texto enfoca a relação entre a poesia moderna de Baudelaire e a concepção de experiência de Benjamin.The paper investigates the approach made by Walter Benjamin of Charles Baudelaire's conception of modernity. After examining the idea of modern beauty in Baudelaire's critical texts, the reasons of Benjamin's preference for the presentation of modernity in Baudelaire's poetry are analized, particularly, in the allegorical poem "Le cygne". At last, the paper focuses on the relation between Baudelaire's modern poetry and Benjamin's concept of experience.

  2. Hiiumaa kiviajast tänapäevani / Endel Saar

    Index Scriptorium Estoniae

    Saar, Endel

    2001-01-01

    Järg Feb/10;17 Mar/3;10;17;24;31 Apr/7;21;28 May/5;26 Jun/2;9;16;30 Jul/7;14;21;28 Aug/4;11;18;25 Sep/8 ;15;22;29 Oct/6;13;20;27 Nov/3;10;24 Dec/1;8;15;22;29. Biosfääri Kaitseala Keskuse poolt koostatud atlas "Administratiivsete muutuste ülevaatekaart", kus antakse ülevaade Hiiumaa arenguloost kiviajast tänapäevani

  3. Lessons from Benjamin Franklin's civic leadership: the Pennsylvania Hospital story.

    Science.gov (United States)

    Miller, I

    1988-01-01

    John Gardner has recently suggested that in a pluralistic society like ours there are many competing groups, each with its own purpose. This leads to fragmentation and conflict as various social systems and institutions interact and collide. We have seen this in health care where competition has eroded traditional provider-insurer-purchaser alliances and, for example, the access problem has grown rapidly. Leaders in such an environment, Gardner (1988) argues, must become involve with building more "mutually workable arrangements with systems external to their own... Leaders unwilling to do so are not serving the long-germ interest of their own constituents... Under the circumstances, all our leader must spend part of their time building community, dealing with polarization, and creating loyalty to the larger venture." Methods for building community in turbulent times are offered by our first health care social entrepreneur, Benjamin Franklin. The following case study presents Franklin's leadership style and the three-phase process of seeking the civic unity that created Franklin's leadership style and the three-phase process of seeking the civic unity that created Pennsylvania Hospital, the nation;s first community hospital. The discussion concludes with a consideration of Franklin's civic leadership in light of five leadership roles suggested by Gardner.

  4. Nap-titration : An effective alternative for continuous positive airway pressure titration

    NARCIS (Netherlands)

    Hoekema, A; Stegenga, B; Meinesz, AF; van der Hoeven, JH; Wijkstra, PJ

    2006-01-01

    When treating Obstructive Steep Apnea-Hypopnea Syndrome (OSAHS) several alternatives for standard (manual) continuous positive airway pressure (CPAP) titration are feasible. A practical alternative is titration without polysomnography during an afternoon nap (Nap-titration). The aim of the present s

  5. EEG Power Density during Nap Sleep : Reflection of an Hourglass Measuring the Duration of Prior Wakefulness

    NARCIS (Netherlands)

    Dijk, Derk Jan; Beersma, Domien G.M.; Daan, Serge

    1987-01-01

    The relation between the duration of prior wakefulness and EEG power density during sleep in humans was assessed by means of a study of naps. The duration of prior wakefulness was varied from 2 to 20 hr by scheduling naps at 1000 hr, 1200 hr, 1400 hr, 1600 hr, 1800 hr, 2000 hr, and 0400 hr. In

  6. Walter Benjamin Confidente de Adorno e Horkheimer na Dialetica do Esclarecimento (Walter Benjamin, Confidant of Adorno and Horkheimer in the Dialectic of the Enlightenment).

    Science.gov (United States)

    Pucci, Bruno

    2000-01-01

    Explains that Benjamin, Adorno, and Horkheimer developed philosophical and aesthetic experiences concerning topics of the moment based on similar presuppositions and ideas. Approaches two areas within the confidentiality shared by the interliniation of the Dialectic of the Enlightenment: critique of history as progress and education of the senses.…

  7. Massenmedien und Bildung: Eine padagogische Interpretation der Adorno-Benjamin-Kontroverse (Mass Media and Education: A Pedagogical Interpretation of the Controversy between Theodore Adorno and Walter Benjamin).

    Science.gov (United States)

    Imai, Yasuo

    1997-01-01

    Gives a pedagogical interpretation of the controversy between Adorno (Theodore) and Benjamin (Walter). Sketches their different conceptions of what constitutes a pedagogical problem and discusses differences between their positions against the background of their shared concern, best described as "experiential poverty." (DSK)

  8. Naps in school can enhance the duration of declarative memories learned by adolescents

    Directory of Open Access Journals (Sweden)

    Nathalia eLemos

    2014-06-01

    Full Text Available Sleep helps the consolidation of declarative memories in the laboratory, but the pro-mnemonic effect of daytime naps in schools is yet to be fully characterized. While a few studies indicate that sleep can indeed benefit school learning, it remains unclear how best to use it. Here we set out to evaluate the influence of daytime naps on the duration of declarative memories learned in school by students of 10-15 years old. A total of 584 students from 6th grade were investigated. Students within a regular classroom were exposed to a 15-minute lecture on new declarative contents, absent from the standard curriculum for this age group. The students were then randomly sorted into nap and non-nap groups. Students in the nap group were conducted to a quiet room with mats, received sleep masks and were invited to sleep. At the same time, students in the non-nap group attended regular school classes given by their usual teacher (Experiment I, or English classes given by another experimenter (Experiment II. In Experiment I (n=371, students were pre-tested on lecture-related contents before the lecture, were invited to nap for up to 2 hours, and after 1, 2 or 5 days received surprise tests with similar content but different wording and question order. In Experiment II (n=213, students were invited to nap for up to 50 minutes (duration of a regular class; surprise tests were applied immediately after the lecture, and repeated after 5, 30 or 110 days. Experiment I showed a significant ~10% gain in test scores for both nap and non-nap groups 1 day after learning, in comparison with pre-test scores. This gain was sustained in the nap group after 2 and 5 days, but in the non-nap group it decayed completely after 5 days. In Experiment II, the nap group showed significantly higher scores than the non-nap group at all times tested, thus precluding specific conclusions. The results suggest that sleep can be used to enhance the duration of memory contents learned in

  9. Serum Helicobacter pylori NapA antibody as a potential biomarker for gastric cancer.

    Science.gov (United States)

    Liu, Jingjing; Liu, Huimin; Zhang, Tingting; Ren, Xiyun; Nadolny, Christina; Dong, Xiaoqun; Huang, Lina; Yuan, Kexin; Tian, Wenjing; Jia, Yunhe

    2014-02-20

    Helicobacter pylori (H. pylori) infection is strongly associated with gastric cancer. However, only a minority of infected individuals ever develop gastric cancer. This risk stratification may be in part due to differences among strains. The relationship between neutrophil-activating protein (NapA) and gastric cancer is unclear. The purpose of this study is to evaluate the significance of NapA as a biomarker in gastric cancer. We used enzyme linked immunosorbent assay (ELISA) to determine the status of H. pylori infection. Indirect ELISA method was used for detection of NapA antibody titer in the serum of H. pylori infected individuals. Unconditional logistic regressions were adopted to analyze the variables and determine the association of NapA and gastric cancer. The results of study indicated serum H. pylori NapA antibody level were associated with a reduced risk for development of gastric cancer. It may be used in conjugation with other indicators for gastric cancer detection.

  10. Duration of sleep inertia after napping during simulated night work and in extended operations.

    Science.gov (United States)

    Signal, Tracey Leigh; van den Berg, Margo J; Mulrine, Hannah M; Gander, Philippa H

    2012-07-01

    Due to the mixed findings of previous studies, it is still difficult to provide guidance on how to best manage sleep inertia after waking from naps in operational settings. One of the few factors that can be manipulated is the duration of the nap opportunity. The aim of the present study was to investigate the magnitude and time course of sleep inertia after waking from short (20-, 40- or 60-min) naps during simulated night work and extended operations. In addition, the effect of sleep stage on awakening and duration of slow wave sleep (SWS) on sleep inertia was assessed. Two within-subject protocols were conducted in a controlled laboratory setting. Twenty-four healthy young men (Protocol 1: n = 12, mean age = 25.1 yrs; Protocol 2: n = 12, mean age = 23.2 yrs) were provided with nap opportunities of 20-, 40-, and 60-min (and a control condition of no nap) ending at 02:00 h after ∼20 h of wakefulness (Protocol 1 [P1]: simulated night work) or ending at 12:00 h after ∼30 h of wakefulness (Protocol 2 [P2]: simulated extended operations). A 6-min test battery, including the Karolinska Sleepiness Scale (KSS) and the 4-min 2-Back Working Memory Task (WMT), was repeated every 15 min the first hour after waking. Nap sleep was recorded polysomnographically, and in all nap opportunities sleep onset latency was short and sleep efficiency high. Mixed-model analyses of variance (ANOVA) for repeated measures were calculated and included the factors time (time post-nap), nap opportunity (duration of nap provided), order (order in which the four protocols were completed), and the interaction of these terms. Results showed no test x nap opportunity effect (i.e., no effect of sleep inertia) on KSS. However, WMT performance was impaired (slower reaction time, fewer correct responses, and increased omissions) on the first test post-nap, primarily after a 40- or 60-min nap. In P2 only, performance improvement was evident 45 min post-awakening for naps of 40 min or more. In ANOVAs

  11. Coordinated Action of Nap1 and RSC in Disassembly of Tandem Nucleosomes.

    Science.gov (United States)

    Prasad, Rashmi; D'Arcy, Sheena; Hada, Arjan; Luger, Karolin; Bartholomew, Blaine

    2016-09-01

    The SWI/SNF and RSC family of ATP-dependent chromatin remodelers disassembles nucleosomes by moving nucleosomes into the vicinity of adjoining nucleosomes. We found that the histone chaperone Nap1 efficiently promotes disassembly of adjacent nucleosomes with which RSC collides and not the disassembly of nucleosomes mobilized by RSC. Nap1 is specific to RSC, as it does not target SWI/SNF, its paralog in Saccharomyces cerevisiae Extensive mutational analysis of Nap1 has revealed that Nap1 affinity for histones H2A-H2B and H3-H4 and its ability to displace histones from DNA are required for Nap1 to enhance RSC-mediated disassembly. Other histone chaperones, such as Vps75, that also bind histones are not able to enhance RSC-mediated disassembly. Our study suggests a mechanism by which Nap1 is recruited to actively transcribed regions and assists in the passage of the transcription complex through chromatin, and it provides a novel mechanism for the coordinated action of RSC and Nap1.

  12. Reactive oxygen species and autophagy associated apoptosis and limitation of clonogenic survival induced by zoledronic acid in salivary adenoid cystic carcinoma cell line SACC-83.

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    Xi-Yuan Ge

    Full Text Available Salivary adenoid cystic carcinoma is an epithelial tumor in the head and neck region. Despite its slow growth, patients with salivary adenoid cystic carcinoma exhibit poor long term survival because of a high rate of distant metastasis. Lung and bone are common distant metastasis sites. Zoledronic acid, a third generation bisphosphonate, has been used for tumor-induced osteolysis due to bone metastasis and has direct antitumor activity in several human neoplasms. Here, we observed that zoledronic acid inhibited salivary adenoid cystic carcinoma cell line SACC-83 xenograft tumor growth in nude mice. In vitro, zoledronic acid induced apoptosis and reduced clonogenic survival in SACC-83. Flow cytometry and western blotting indicated that the cell cycle was arrested at G0/G1. Zoledronic acid treatment upregulated reactive oxygen species as well as the autophagy marker protein LC-3B. Reactive oxygen species scavenger N-acetylcysteine and autophagy antagonist 3-methyladenine decreased zoledronic acid-induced apoptosis and increased clonogenic survival. Silencing of the autophagy related gene Beclin-1 also decreased zoledronic acid-induced apoptosis and inhibition of clonogenic formation. In addition, isobolographic analysis revealed synergistic effects on apoptosis when zoledronic acid and paclitaxel/cisplatin were combined. Taken together, our results suggest that zoledronic acid induced apoptosis and reduced clonogenic survival via upregulation of reactive oxygen species and autophagy in the SACC-83 cell line. Thus, zoledronic acid should be considered a promising drug for the treatment of salivary adenoid cystic carcinoma.

  13. 78 FR 73109 - Radio Broadcasting Services; Benjamin and Cisco, TX; De Beque, CO; Port Lions, AK; Rule and...

    Science.gov (United States)

    2013-12-05

    ... COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Benjamin and Cisco, TX; De Beque, CO; Port Lions, AK... at De Beque, Colorado; Channel 237C3 at Benjamin, Texas; Channel 261C3 at Cisco, Texas; Channel 288C2..., Channel 237C3; by removing Cisco, Channel 261C3; by removing Channel 288C2 at Rule; and by...

  14. Resolution of two native monomeric 90kDa nitrate reductase active proteins from Shewanella gelidimarina and the sequence of two napA genes.

    Science.gov (United States)

    Simpson, Philippa J L; McKinzie, Audra A; Codd, Rachel

    2010-07-16

    The reduction of nitrate to nitrite in the bacterial periplasm occurs in the 90kDa NapA subunit of the periplasmic nitrate reductase (NAP) system. Most Shewanella genomes contain two nap operons: napEDABC and napDAGHB, which is an unusual feature of this genus. Two native, monomeric, 90kDa nitrate reductase active proteins were resolved by hydrophobic interaction chromatography from aerobic cultures of Shewanella gelidimarina replete with reduced nitrogen compounds. The 90kDa protein obtained in higher yield was characterized as NapA by electronic absorption and electron paramagnetic resonance spectroscopies and was identified by LC/MS/MS and MALDI-TOF/TOF MS as NapA from the napEDABC-type operon. The other 90kDa protein, which was unstable and produced in low yields, was posited as NapA from the napDAGHB-type operon. Two napA genes have been sequenced from the napEDABC-type and napDAGHB-type operons of S. gelidimarina. Native NAP from S. putrefaciens was resolved as one NapA monomer and one NapAB heterodimer. Two amino acid substitutions in NapA correlated with the isolation of NAP as a NapA monomer or a NapAB heterodimer. The resolution of native, redox-active NapA isoforms in Shewanella provides new insight into the respiratory versatility of this genus, which has implications in bioremediation and the assembly of microbial fuel cells.

  15. L’esperienza estetica come esperienza di immagini. Walter Benjamin e Theodor W. Adorno

    Directory of Open Access Journals (Sweden)

    Elena Tavani

    2012-05-01

    Full Text Available Both Walter Benjamin and Theodor W. Adorno consider ‘aesthetical experience’ as an “image experience” assuming a power of images “to set free forces” directed to produce or support aesthetical-political (Benjamin or aesthetical-critical (Adorno requirements. Profane illumination, ‘thinkimages’, phantasmagory, dialectical images, decayed ‘aura’ and technicalized images in Benjamin’s theory of aesthetical modernity. Expressive feature or “mimetic” eloquence in nature and art countering reality, dismantled ‘aura’ in contemporary desacralized work of art, but also persisting ‘aura’ in its meaningful dimension in Adorno’s aesthetical theory.

  16. Identification of Peach NAP Transcription Factor Genes and Characterization of their Expression in Vegetative and Reproductive Organs during Development and Senescence.

    Science.gov (United States)

    Li, Fang; Li, Jinjin; Qian, Ming; Han, Mingyu; Cao, Lijun; Liu, Hangkong; Zhang, Dong; Zhao, Caiping

    2016-01-01

    The NAP (NAC-like, activated by AP3/P1) transcription factor belongs to a subfamily of the NAC transcription factor family, and is believed to have an important role in regulating plant growth and development. However, there is very little information about this subfamily in Rosaceous plants. We identified seven NAP genes in the peach genome. PpNAP2 was categorized in the NAP I group, and contained a conserved transcription activation region. The other PpNAP genes belonged to the NAP II group. The expression patterns of the PpNAP genes differed in various organs and developmental stages. PpNAP1 and PpNAP2 were highly expressed in mature and senescing flowers, but not in leaves, fruits, and flower buds. PpNAP3 and PpNAP5 were only expressed in leaves. The PpNAP4 expression level was high in mature and senescing fruits, while PpNAP6 and PpNAP7 expression was up-regulated in mature and senescent leaves and flowers. During the fruit development period, the PpNAP4 and PpNAP6 expression levels rapidly increased during the S1 and S4 stages, which suggests these genes are involved in the first exponential growth phase and fruit ripening. During the fruit ripening and softening period, the PpNAP1, PpNAP4, and PpNAP6 expression levels were high during the early storage period, which was accompanied by a rapid increase in ethylene production. PpNAP1, PpNAP4, and PpNAP6 expression slowly increased during the middle or late storage periods, and peaked at the end of the storage period. Additionally, abscisic acid (ABA)-treated fruits were softer and produced more ethylene than the controls. Furthermore, the PpNAP1, PpNAP4, and PpNAP6 expression levels were higher in ABA-treated fruits. These results suggest that PpNAP1, PpNAP4, and PpNAP6 are responsive to ABA and may regulate peach fruit ripening.

  17. Identification of peach NAP transcription factor genes and characterization of their expression in vegetative and reproductive organs during development and senescence

    Directory of Open Access Journals (Sweden)

    Fang eLi

    2016-02-01

    Full Text Available The NAP (NAC-like, activated by AP3/P1 transcription factor belongs to a subfamily of the NAC transcription factor family, and is believed to have an important role in regulating plant growth and development. However, there is very little information about this subfamily in Rosaceous plants. We identified seven NAP genes in the peach genome. PpNAP2 was categorized in the NAP I group, and contained a conserved transcription activation region. The other PpNAP genes belonged to the NAP II group. The expression patterns of the PpNAP genes differed in various organs and developmental stages. PpNAP1 and PpNAP2 were highly expressed in mature and senescing flowers, but not in leaves, fruits, and flower buds. PpNAP3 and PpNAP5 were only expressed in leaves. The PpNAP4 expression level was high in mature and senescing fruits, while PpNAP6 and PpNAP7 expression was up-regulated in mature and senescent leaves and flowers. During the fruit development period, the PpNAP4 and PpNAP6 expression levels rapidly increased during the S1 and S4 stages, which suggests these genes are involved in the first exponential growth phase and fruit ripening. During the fruit ripening and softening period, the PpNAP1, PpNAP4, and PpNAP6 expression levels were high during the early storage period, which was accompanied by a rapid increase in ethylene production. PpNAP1, PpNAP4, and PpNAP6 expression slowly increased during the middle or late storage periods, and peaked at the end of the storage period. Additionally, abscisic acid (ABA-treated fruits were softer and produced more ethylene than the controls. Furthermore, the PpNAP1, PpNAP4, and PpNAP6 expression levels were higher in ABA-treated fruits. These results suggest that PpNAP1, PpNAP4, and PpNAP6 are responsive to ABA and may regulate peach fruit ripening.

  18. [Effect of daytime nap on consolidation of declarative memory in humans].

    Science.gov (United States)

    Ukraintseva, Iu V; Dorokhov, V B

    2011-01-01

    We studied effects of a daytime nap (1 hour) with including only NREM sleep on performance of declarative memory task (60 semantically unrelated word pairs) and general functional state. During training, procedure of learning of 30 word pairs was presented once, and that of the other 30 pairs was repeated twice. Strength of the task acquisition was tested. Subjects participated in two experiments: basic and control one. After learning participants either took a nap (basic experiment) or kept awake looking movies (control experiment). In 4.5 hours after the training session all the subjects were retested. As compared to the subjects who stayed awake during the training-retesting interval, subjects who had a NREM nap demonstrated enhanced performance. Concerning the strength of task acquisition, sleep-dependent performance was observed only for the word pairs learned once. Naps did not affect the functional state assessed by the reaction time dynamics and psychological testing.

  19. Relational memory: a daytime nap facilitates the abstraction of general concepts.

    Directory of Open Access Journals (Sweden)

    Hiuyan Lau

    Full Text Available It is increasingly evident that sleep strengthens memory. However, it is not clear whether sleep promotes relational memory, resultant of the integration of disparate memory traces into memory networks linked by commonalities. The present study investigates the effect of a daytime nap, immediately after learning or after a delay, on a relational memory task that requires abstraction of general concept from separately learned items. Specifically, participants learned English meanings of Chinese characters with overlapping semantic components called radicals. They were later tested on new characters sharing the same radicals and on explicitly stating the general concepts represented by the radicals. Regardless of whether the nap occurred immediately after learning or after a delay, the nap participants performed better on both tasks. The results suggest that sleep--even as brief as a nap--facilitates the reorganization of discrete memory traces into flexible relational memory networks.

  20. Spread of epidemic Clostridium difficile NAP1/027 in Latin America: case reports in Panama.

    Science.gov (United States)

    López-Ureña, Diana; Quesada-Gómez, Carlos; Miranda, Erick; Fonseca, Mercedes; Rodríguez-Cavallini, Evelyn

    2014-02-01

    The rate and severity of Clostridium difficile infection (CDI) have been linked to the emergence and spread of the hypervirulent toxigenic strain NAP1/027. This strain has been responsible for large outbreaks in healthcare facilities in North America and Europe and most recently in Latin America. This is the first report of the NAP1 strain in Panama. It suggests that the spread of C. difficile NAP1 throughout Latin America could be a possibility as evidenced in the following case reports. Five isolates typed as NAP1 had tcdA, tcdB, binary toxin gene cdtB and tcdC deletion. All isolates were resistant to clindamycin, fluoroquinolones and rifampicin. Under this scenario, surveillance programmes for CDI should be implemented in public health facilities in Latin America and diagnosis of CDI should be considered, especially in patients with predisposing factors.

  1. Vanaaegse fototehnikaga katsetamine loob silla mineviku ja tänapäeva vahel / Tanel Verk

    Index Scriptorium Estoniae

    Verk, Tanel

    2013-01-01

    Fototehnika arengust, vanaaegse fototehnika kasutamisest tänapäeval. Eesti Suureformaadilise Fotograafia Ühenduse fotonäitus "Koosolek" Fotomuuseumi galeriis "Lee" 22. novembrist 2012 kuni 14. jaanuarini 2013

  2. Insomnia Symptoms, Daytime Naps And Physical Leisure Activities In The Elderly: FIBRA Study Campinas

    Directory of Open Access Journals (Sweden)

    Natália Tonon Monteiro

    2014-04-01

    Full Text Available The practice of physical activities contributes to reducing the risk of chronic diseases and improves sleep patterns in the elderly. This research aimed to investigate the association between insomnia symptoms and daytime nap and the participation in physical leisure activities in elderly community residents. Data from the Studies Network of the Fragility in Brazilian Elderly (Campinas site, were used. Information from 689 elderly was analyzed, regarding sociodemographic characterization, physical leisure activity, occurrence of daytime napping and its duration, symptoms of insomnia and use of sleep medication. A significant association was found between the practice of walking and the daytime nap of short duration. Studies indicate that a short nap can benefit the quality of sleep and health of the elderly. Therefore, promoting the practice of walking can be a nursing intervention that favors the sleep patterns of the elderly.

  3. [Insomnia symptoms, daytime naps and physical leisure activities in the elderly: FIBRA Study Campinas].

    Science.gov (United States)

    Monteiro, Natália Tonon; Neri, Anita Liberalesso; Coelim, Maria Filomena

    2014-04-01

    The practice of physical activities contributes to reducing the risk of chronic diseases and improves sleep patterns in the elderly. This research aimed to investigate the association between insomnia symptoms and daytime nap and the participation in physical leisure activities in elderly community residents. Data from the Studies Network of the Fragility in Brazilian Elderly (Campinas site), were used. Information from 689 elderly was analyzed, regarding sociodemographic characterization, physical leisure activity, occurrence of daytime napping and its duration, symptoms of insomnia and use of sleep medication. A significant association was found between the practice of walking and the daytime nap of short duration. Studies indicate that a short nap can benefit the quality of sleep and health of the elderly. Therefore, promoting the practice of walking can be a nursing intervention that favors the sleep patterns of the elderly.

  4. Antifungal activity and inhibition of fumonisin production by Rosmarinus officinalis L. essential oil in Fusarium verticillioides (Sacc.) Nirenberg.

    Science.gov (United States)

    da Silva Bomfim, Natalia; Nakassugi, Lydiana Polis; Faggion Pinheiro Oliveira, Jessica; Kohiyama, Cassia Yumie; Mossini, Simone Aparecida Galerani; Grespan, Renata; Nerilo, Samuel Botião; Mallmann, Carlos Augusto; Alves Abreu Filho, Benicio; Machinski, Miguel

    2015-01-01

    The chemical composition of Rosmarinus officinalis L. essential oil (REO) was analysed by gas chromatography-mass spectrometry and nuclear magnetic resonance spectroscopy. The main compounds of the REO were 1.8 cineole (52.2%), camphor (15.2%) and α-pinene (12.4%). The mycelial growth of Fusarium verticillioides (Sacc.) Nirenberg was reduced significantly by 150 μg/mL of REO. Significant microscopic morphological changes were visualised, such as the rupture of the cell wall and the leakage of cytoplasm at 300 μg/mL of REO. At lower concentrations of REO, the effects on the production of ergosterol and the biomass of mycelium varied, as did the effects on the production of fumonisins, but at ≥300 μg/mL of REO, these processes were significantly inhibited, showing the effectiveness of the REO as an antifungal agent. The results suggested that the REO acts against F. verticillioides by disrupting the cell wall and causing the loss of cellular components, subsequently inhibiting the production of fumonisins and ergosterol. Copyright © 2014 Elsevier Ltd. All rights reserved.

  5. Inibição do crescimento micelial de Cercospora calendulae Sacc. por extratos de plantas medicinais

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    J.M. Nascimento

    2013-01-01

    Full Text Available O uso de extratos e óleos essenciais de plantas medicinais tem sido amplamente estudado no controle de doenças de plantas. O objetivo da realização do presente trabalho foi avaliar o efeito de extratos de Ruta graveolens L., Mentha x villosa, Calendula officinalis L., Momordica charantia L., Symphytum officinale L., Ageratum conyzoides L. e Ricinus comunis L., nas concentrações de 0, 250, 500, 1000, 2000, 5000 e 10000 mg L-1, sobre a inibição do crescimento micelial de Cercospora calendulae Sacc. in vitro. Os extratos foram obtidos por infusão. O experimento foi desenvolvido no Laboratório de Fitopatologia da FCA/UFGD, estado de Mato Grosso do Sul, em delineamento inteiramente casualizado, esquema fatorial 7 extratos x 7 concentrações, com seis repetições. Foi detectado efeito dos extratos e suas concentrações sobre o crescimento do fungo, sendo a interação significativa. Os extratos de calêndula, arruda, hortelã e melão de São Caetano, nas maiores concentrações resultaram em maiores porcentagens de inibição, próximas de 100%, 30%, 35% e 40%, respectivamente, a 10000 mg L-1.

  6. Análisis de la infección de Colletotrichum gloeosporioides (Penz. Penz. & Sacc. de frutos de aguacatero

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    Édgar Saúl Rodríguez-López

    2013-09-01

    Full Text Available La patogénesis de Colletotrichum gloeosporioides (Penz. Penz. & Sacc. del estado de Michoacán, México se caracterizó en frutos de aguacatero (Persea americana L. cultivar 'Hass'. El hongo causó los síntomas característicos de la enfermedad denominada 'antracnosis' a partir de los diez días después de la inoculación. La tasa de infección del hongo entre tratamientos fue significativamente diferente (p<0.05 a partir del sexto día de la inoculación y el desarrollo de la enfermedad se explicó por un modelo de regresión lineal simple (Y = 1.123 + 0.1133X. No se detectó la formación de apresorios pero sí la síntesis de una capa mucilaginosa asociada con los tubos germinativos. El proceso infectivo del hongo se manifestó con la penetración de las hifas intra e inter-celularmente y con la producción de acérvulos a partir de los 12 días después de la inoculación. Los síntomas de la antracnosis se asociaron con la degradación de polifenoles, plasmólisis, necrosis y desintegración celular.

  7. napäevased liikursuurtükid / Anna Kern

    Index Scriptorium Estoniae

    Kern, Anna

    2013-01-01

    Riigikaitse arengukavas (a. 2013-2022) on ette nähtud võimalused 1. jalaväebrigaadile hankida tänapäevased liikursuurtükid. Ülevaade liikursuurtükkide loomisest, kasutamisest sõdades ja tänapäevase liikursuurtüki iseloomustus. Näiteid erinevtest liikursuurtükkidest: Archer (Rootsi), Panzerhaubitze 2000 (Saksamaa), Caesar (Prantsusmaa), M777 (USA). Lisatud tabel tehniliste andmetega

  8. Objective measurement of daytime napping, cognitive dysfunction and subjective sleepiness in Parkinson's disease.

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    Samuel J Bolitho

    Full Text Available INTRODUCTION: Sleep-wake disturbances and concomitant cognitive dysfunction in Parkinson's disease (PD contribute significantly to morbidity in patients and their carers. Subjectively reported daytime sleep disturbance is observed in over half of all patients with PD and has been linked to executive cognitive dysfunction. The current study used daytime actigraphy, a novel objective measure of napping and related this to neuropsychological performance in a sample of PD patients and healthy, age and gender-matched controls. Furthermore this study aimed to identify patients with PD who may benefit from pharmacologic and behavioural intervention to improve these symptoms. METHODS: Eighty-five PD patients and 21 healthy, age-matched controls completed 14 days of wrist actigraphy within two weeks of neuropsychological testing. Objective napping measures were derived from actigraphy using a standardised protocol and subjective daytime sleepiness was recorded by the previously validated Epworth Sleepiness Scale. RESULTS: Patients with PD had a 225% increase in the mean nap time per day (minutes as recorded by actigraphy compared to age matched controls (39.2 ± 35.2 vs. 11.5 ± 11.0 minutes respectively, p < 0.001. Significantly, differences in napping duration between patients, as recorded by actigraphy were not distinguished by their ratings on the subjective measurement of excessive daytime sleepiness. Finally, those patients with excessive daytime napping showed greater cognitive deficits in the domains of attention, semantic verbal fluency and processing speed. CONCLUSION: This study confirms increased levels of napping in PD, a finding that is concordant with subjective reports. However, subjective self-report measures of excessive daytime sleepiness do not robustly identify excessive napping in PD. Fronto-subcortical cognitive dysfunction was observed in those patients who napped excessively. Furthermore, this study suggests that daytime

  9. Neutrophil-activating protein (HP-NAP) versus ferritin (Pfr): comparison of synthesis in Helicobacter pylori.

    Science.gov (United States)

    Dundon, W G; Polenghi, A; Del Guidice, G; Rappuoli, R; Montecucco, C

    2001-05-15

    We recently reported that the neutrophil-activating protein (HP-NAP) of Helicobacter pylori is capable of binding iron in vitro. To more fully understand the relationship between iron and HP-NAP the synthesis of HP-NAP was compared to that of Pfr, another iron-binding protein of H. pylori. Synthesis of HP-NAP and Pfr in growing cultures of H. pylori was analysed under iron depletion and iron, copper, nickel and zinc overload. The synthesis of HP-NAP and Pfr in H. pylori was also analysed under conditions of varying pH and oxidative stress. In addition, recombinant HP-NAP and Pfr were produced in Escherichia coli to assess the contribution of the two proteins to increased survival of E. coli under heavy metal overload. Our data reveal that both HP-NAP and Pfr accumulate in the stationary phase of growth. HP-NAP synthesis is not regulated by iron depletion or overload or by the presence of copper, nickel or zinc in liquid medium and it does not confer resistance to these metals when produced in E. coli. Except for an increase in the synthesis of Pfr at pH 5.7 neither the pH or oxidative stress conditions investigated had an affect on the synthesis of either protein. An increase in Pfr synthesis was observed under iron overload and a decrease was observed under conditions of copper, nickel and zinc overload confirming previous reports. Recombinant Pfr, as well as conferring resistance to iron and copper as previously reported, also conferred resistance to zinc overload when produced in E. coli.

  10. Serum Helicobacter pylori NapA antibody as a potential biomarker for gastric cancer

    OpenAIRE

    Jingjing Liu; Huimin Liu; Tingting Zhang; Xiyun Ren; Christina Nadolny; Xiaoqun Dong; Lina Huang; Kexin Yuan; Wenjing Tian; Yunhe Jia

    2014-01-01

    Helicobacter pylori (H. pylori) infection is strongly associated with gastric cancer. However, only a minority of infected individuals ever develop gastric cancer. This risk stratification may be in part due to differences among strains. The relationship between neutrophil-activating protein (NapA) and gastric cancer is unclear. The purpose of this study is to evaluate the significance of NapA as a biomarker in gastric cancer. We used enzyme linked immunosorbent assay (ELISA) to determine the...

  11. napäevased liikursuurtükid / Anna Kern

    Index Scriptorium Estoniae

    Kern, Anna

    2013-01-01

    Riigikaitse arengukavas (a. 2013-2022) on ette nähtud võimalused 1. jalaväebrigaadile hankida tänapäevased liikursuurtükid. Ülevaade liikursuurtükkide loomisest, kasutamisest sõdades ja tänapäevase liikursuurtüki iseloomustus. Näiteid erinevtest liikursuurtükkidest: Archer (Rootsi), Panzerhaubitze 2000 (Saksamaa), Caesar (Prantsusmaa), M777 (USA). Lisatud tabel tehniliste andmetega

  12. eNAP-2, a novel cysteine-rich bactericidal peptide from equine leukocytes.

    OpenAIRE

    Couto, M A; Harwig, S S; Cullor, J S; Hughes, J. P.; Lehrer, R I

    1992-01-01

    We purified a novel cysteine-rich antibiotic peptide, eNAP-2 (M(r), approximately 6,500), from acid extracts of equine neutrophils by sequential gel filtration and reversed-phase high-performance liquid chromatography and determined its partial N-terminal amino acid sequence. Although its cysteine motif distinguished eNAP-2 from all other currently known endogenous antibiotic peptides, including defensins and granulins, it showed substantial sequence similarity to WDNM1, a putative member of ...

  13. [association Between Insomnia Symptoms, Daytime Napping, And Falls In Community-dwelling Elderly].

    OpenAIRE

    Pereira,Alexandre Alves; Ceolim, Maria Filomena; Neri,Anita Liberalesso

    2015-01-01

    This study focused on associations between insomnia symptoms, daytime napping, and falls in community-dwelling elderly, using a population-based cross-sectional design and probability sample with 689 community-dwelling elders. The protocol consisted of self-reported and physical performance variables. The study used univariate and multivariate logistic regression analysis with statistical significance set at p < 0.05. Prevalence rates for insomnia symptoms and daytime napping were 49.9% (n = ...

  14. Mito e política: notas sobre o conceito de destino no "jovem" Benjamin

    Directory of Open Access Journals (Sweden)

    Ernani Chaves

    1994-01-01

    Full Text Available O conceito de mito é uma das chaves para a compreensão do pensamento de Walter Benjamin. O objetivo deste texto é reconstituir a gênese deste conceito com base em suas primeiras formulações, tal como apresentadas em Destino e caráter, texto escrito em 1919. O presente artigo se divide em duas partes: na primeira, reconstituímos os argumentos de Benjamin, a partir da filiação do conceito de destino ao domínio de uma Teoria do Direito e sua necessária inserção em um modo de "temporalidade" definido pela "repetição"; a segunda parte pretende demonstrar que as posições de Benjamin estão estreitamente ligadas a uma posição também política: seu objetivo era, em nome de um anarquismo confesso, se contrapor a todos os "mitos" nacionalistas (que levaram a Alemanha à guerra e à necessidade de "líderes", "condutores" (Führer para o povo. Como exemplo dessa perspectiva política, nos baseamos na confrontação, sempre presente, de Benjamin com o Sionismo.

  15. Benjamin Franklin's Pictorial Representations of the British Colonies in America: A Study in Rhetorical Iconology.

    Science.gov (United States)

    Olson, Lester C.

    1987-01-01

    Investigates the underlying reasons for the fundamental shift in Benjamin Franklin's portrayals of the British colonies in America. Explores the hypothesis that "Magna Britannia" was both a deliberative work directed toward the British Parliament and an apologetic work directed toward conservatives in the colonial public. Also discusses Franklin's…

  16. Benjamin Franklin's Commemorative Medal "Libertas Americana": A Study in Rhetorical Iconology.

    Science.gov (United States)

    Olson, Lester C.

    1990-01-01

    Investigates the underlying rhetorical functions of how Benjamin Franklin used the medal to praise the national characters of France and the United States in those two countries, while he also used it to influence government policy in Malta and to vindicate himself from criticism in England. (KEH)

  17. Logic Sequence of the Approaches in Benjamin Franklin’s How I Taught Myself to Write

    Institute of Scientific and Technical Information of China (English)

    郭亮

    2013-01-01

    The best writing of Benjamin Franklin is founded in his own autobiography. This essay reveals the striking logic sequence of the approaches mentioned in the prose How I Taught Myself to Write from autobiography, and concludes the enlightenment for vast teachers when they lecture English writing.

  18. Educação e infância em alguns escritos de Walter Benjamin

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    Anita Helena Schlesener

    2011-04-01

    Full Text Available Este trabalho pretende refletir sobre alguns escritos de Walter Benjamin sobre educação e infância, expressos também na obra Infância em Berlim por volta de 1900. Benjamin coloca em questão a educação burguesa e suas práticas e reflete sobre o imaginário da criança. Relacionando percepção e conceito, Benjamin apresenta conceitos que inserem a educação no contexto da filosofia da historia. O artigo visa a acentuar a originalidade de um autor que, no contexto da sociedade europeia de 1920 até sua morte por suicídio em 1940, colocou relevantes questões sobre educação e sugeriu novos paradigmas de interpretação, conforme a afirmação de Benjamin, método de montagem, como um mosaico ou uma constelação.

  19. Verwantschap in Extremen : Politieke Theologie bij Walter Benjamin en Carl Schmitt

    NARCIS (Netherlands)

    Wilde, de Marc

    2008-01-01

    De filosoof Walter Benjamin (1892-1940) en de jurist Carl Schmitt (1889-1985) behoren tot de eersten die de terugkeer van religie in moderne democratieën onder de aandacht brachten en onderwierpen aan een scherpe analyse. In de jaren twintig en dertig zouden zij een dialoog met elkaar zijn aangegaan

  20. Notes on Walter Benjamin´s concepts of narrative and experience

    Directory of Open Access Journals (Sweden)

    Wagner de Avila Quevedo

    2008-12-01

    Full Text Available Abstract: The aim of this text is to explain some classical´s writings on Walter Benjamin´s concept of experience (Erfahrung as it is related to those of narrative (Erzählung and memory.

  1. Exhibiting or presenting? Politics, aesthetics and mysticism in Benjamin's and Deleuze's concepts of cinema

    NARCIS (Netherlands)

    J. Früchtl

    2010-01-01

    In his famous "work of art" essay, Walter Benjamin places politics at the centre of an aesthetics of modernity. He provides a brisk contrast between the romantic tradition of art philosophy and a politicisation of perception, receiving its training through the experience of the metropolis, in terms

  2. THEODOR WIESENGRUND ADORNO AND WALTER BENJAMIN: NOTES ON A FRAGMENTARY PHILOSOPHY OF FICTION

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    Gustavo Martín Fragachán

    2011-04-01

    Full Text Available In the following pages I would like to try the quite tight interpretation that carries out Theodor Wiesengrund Adorno of the overflowing and complex philosophical work of Walter Benjamin. In order to do it I shall use the text titled Sobre Walter Benjamin, published by Cátedra, Madrid, 1995. In this book they are compiled both: some texts around the philosophical work of Benjamin and some of the letters directed by Adorno to his friend. Be worth to denote that several of the works are later to the death of Benjamín. Concretely, I shall refer, after to have analyzed the portrait of Benjamín made by Adorno, to the chapters named “Dirección única de Walter Benjamín”, “Sobre algunos motivos en Baudelaire” and “Sobre Franz Kafka. Con ocasión del décimo aniversario de su muerte”. To them I shall add few works written by the  own Benjamin that under similar titles have been published into his book Sobre el Programa de la Filosofía Futura y otros ensayos, Monte Avila, Caracas, 1970.

  3. Benjamin Moore, Science, and Medical Planning in Early Twentieth-Century Britain

    Science.gov (United States)

    Lawson, Gordon S.

    2008-01-01

    Benjamin Moore (1867-1922), physiologist and biochemist, was an eminent member of the British scientific and medical community in the early twentieth century. As a founder and president of the State Medical Services Association (SMSA) from its establishment in 1912 until his untimely death in 1922, Moore was a prominent medical services activist…

  4. Critique of art : Walter Benjamin and Theodor W. Adorno on art criticism

    NARCIS (Netherlands)

    Lijster, Thijs Erik

    2012-01-01

    Kunstkritiek vervult een cruciale rol als medium tussen het kunstwerk en de maatschappelijke werkelijkheid. Dat concludeert promovendus Thijs Lijster. Daarbij moet kunstkritiek, in navolging van Walter Benjamin en Theodor Adorno, niet in de eerste plaats opgevat worden als het beoordelen van kunstwe

  5. The Appreciation of the Beauty in the Film:The Curious Case of Benjamin Button

    Institute of Scientific and Technical Information of China (English)

    李家妍

    2014-01-01

    This paper appreciates the beauty in the film The Curious Case of Benjamin Buttonfrom three perspectives: technological beauty in visual ef-fects of the film; philosophical beauty in language, which is discussed in characters’monologues and dialogues in the film; and the eternal beauty of love, life and death.

  6. Seeing and Playing as Labor: Toward a Visual Materialist Pedagogy of Video Games through Walter Benjamin

    Science.gov (United States)

    Bulut, Ergin

    2013-01-01

    In this article, the author draws specifically on the work of Walter Benjamin and engages with the world of video games by focusing on the constitution of labor as it unfolds in modding practices, as well as approaching the very act of seeing labor in a highly visual culture where value is extracted not just through the labor process but also…

  7. Virgil in French Romanticism: Paralell Novels of Benjamin Constant and Germaine de Staël

    NARCIS (Netherlands)

    Burgersdijk, D.W.P.

    2014-01-01

    Two highlights of French Romanticism, Benjamin Constant’s Adolphe (first published in 1816) and Madame de Staël’s Corinne ou l’Italie (1802) have often been related to one another, regarding as well the personal relationships by which the authors were tied as the narratives’ contents. Both novels tr

  8. Georg Rasch and Benjamin Wright's Struggle with the Unidimensional Polytomous Model with Sufficient Statistics

    Science.gov (United States)

    Andrich, David

    2016-01-01

    This article reproduces correspondence between Georg Rasch of The University of Copenhagen and Benjamin Wright of The University of Chicago in the period from January 1966 to July 1967. This correspondence reveals their struggle to operationalize a unidimensional measurement model with sufficient statistics for responses in a set of ordered…

  9. A method for constructing exact solutions and application to Benjamin Ono equation

    Institute of Scientific and Technical Information of China (English)

    Wang Zhen; Li De-Sheng; Lu Hui-Fang; Zhang Hong-Qing

    2005-01-01

    By using an improved projective Riccati equation method, this paper obtains several types of exact travelling wave solutions to the Benjamin Ono equation which include multiple soliton solutions, periodic soliton solutions and Weierstrass function solutions. Some of them are found for the first time. The method can be applied to other nonlinear evolution equations in mathematical physics.

  10. Pärt, Arvo. Fratres (version 1980). Cantus in memoriam Benjamin Britten / Guillaume Connesson

    Index Scriptorium Estoniae

    Connesson, Guillaume

    1995-01-01

    Uuest heliplaadist "Pärt, Arvo. Fratres (version 1980). Cantus in memoriam Benjamin Britten. Summa. Spiegel im Spiegel. Festina lente. Tabula rasa: Tasmin Little (violon), Martin Roscoe (piano), Bournemouth Sinfonietta, Richard Studt" EMI Classics 565 031-2 (CD: 98 F). 1993. TT: 1h 03'42"

  11. Pärt, Arvo. Fratres (version 1980). Cantus in memoriam Benjamin Britten / Guillaume Connesson

    Index Scriptorium Estoniae

    Connesson, Guillaume

    1995-01-01

    Uuest heliplaadist "Pärt, Arvo. Fratres (version 1980). Cantus in memoriam Benjamin Britten. Summa. Spiegel im Spiegel. Festina lente. Tabula rasa: Tasmin Little (violon), Martin Roscoe (piano), Bournemouth Sinfonietta, Richard Studt" EMI Classics 565 031-2 (CD: 98 F). 1993. TT: 1h 03'42"

  12. Critique of art : Walter Benjamin and Theodor W. Adorno on art criticism

    NARCIS (Netherlands)

    Lijster, Thijs Erik

    2012-01-01

    Kunstkritiek vervult een cruciale rol als medium tussen het kunstwerk en de maatschappelijke werkelijkheid. Dat concludeert promovendus Thijs Lijster. Daarbij moet kunstkritiek, in navolging van Walter Benjamin en Theodor Adorno, niet in de eerste plaats opgevat worden als het beoordelen van kunstwe

  13. Exhibiting or presenting? Politics, aesthetics and mysticism in Benjamin's and Deleuze's concepts of cinema

    NARCIS (Netherlands)

    Früchtl, J.

    2010-01-01

    In his famous "work of art" essay, Walter Benjamin places politics at the centre of an aesthetics of modernity. He provides a brisk contrast between the romantic tradition of art philosophy and a politicisation of perception, receiving its training through the experience of the metropolis, in terms

  14. A Roof without Walls: Benjamin Bloom's Taxonomy and the Misdirection of American Education

    Science.gov (United States)

    Booker, Michael J.

    2007-01-01

    Plato wrote that higher order thinking could not start until the student had mastered conventional wisdom. The American educational establishment has turned Plato on his head with the help of a dubious approach to teaching developed by one Benjamin Bloom. Bloom's taxonomy was intended for higher education, but its misappropriation has resulted in…

  15. Risperidone and NAP protect cognition and normalize gene expression in a schizophrenia mouse model.

    Science.gov (United States)

    Vaisburd, Sinaya; Shemer, Zeev; Yeheskel, Adva; Giladi, Eliezer; Gozes, Illana

    2015-11-10

    Mutated disrupted in schizophrenia 1 (DISC1), a microtubule regulating protein, leads to schizophrenia and other psychiatric illnesses. It is hypothesized that microtubule stabilization may provide neuroprotection in schizophrenia. The NAP (NAPVSIPQ) sequence of activity-dependent neuroprotective protein (ADNP) contains the SxIP motif, microtubule end binding (EB) protein target, which is critical for microtubule dynamics leading to synaptic plasticity and neuroprotection. Bioinformatics prediction for FDA approved drugs mimicking SxIP-like motif which displace NAP-EB binding identified Risperidone. Risperidone or NAP effectively ameliorated object recognition deficits in the mutated DISC1 mouse model. NAP but not Risperidone, reduced anxiety in the mutated mice. Doxycycline, which blocked the expression of the mutated DISC1, did not reverse the phenotype. Transcripts of Forkhead-BOX P2 (Foxp2), a gene regulating DISC1 and associated with human ability to acquire a spoken language, were increased in the hippocampus of the DISC1 mutated mice and were significantly lowered after treatment with NAP, Risperidone, or the combination of both. Thus, the combination of NAP and standard of care Risperidone in humans may protect against language disturbances associated with negative and cognitive impairments in schizophrenia.

  16. APOSTILLE: NOTES SUPPLÉMENTAIRES AU CHANTIER DE 1997 SUR WALTER BENJAMIN.

    Directory of Open Access Journals (Sweden)

    Laurent Lamy

    2012-10-01

    Full Text Available Résumé : Cette apostille propose un supplément à l'appareil critique greffé à la traduction en français de Die Aufgabe des Übertsetsers qu'Alexis Nouss et moi-même avions présentée en 1997. J'apporte certains correctifs à notre traduction initiale. J'ai aussi sélectionné des termes qui agissent comme des révélateurs de la trame conceptuelle qui court en filigrane de cet essai : par exemple, l'usage de l'adverbe intensiv ou encore la notion d'ingenium. Enfin, je consacre un assez ample développement à l'importance que revêt, pour bien saisir la stratégie narrative mise en place dans le prologue de Benjamin, l'usage de métaphores d'extraction kabbalistique, qui l'inscrivent de plain-pied dans la tradition mystique juive. Je m'oppose sur ce point au traitement plutôt laxiste qu'Antoine Berman a accordé à cette dimension, qu'il juge négligeable ou anecdotique, alors qu'elle constitue la clef de voûte de la métaphysique du langage élaborée par Benjamin. Mots clé : Walter Benjamin, retraduction, métaphores, métaphysique du langage. APOSTILLA: NOTAS SUPLEMENTARIAS AL TRABAJO DE 1997 SOBRE WALTER BENJAMIN Resumen: Estas apostillas proporcionan un suplemento al aparato crítico incluido en la traducción francesa de Die Aufgabe des Übertsetsers, que Alexis Nouss y yo presentamos en 1997. Hice algunos ajustes en nuestra traducción inicial. También seleccioné términos que actúan como reveladores de la trama conceptual que atraviesa en filigrana este ensayo. Por ejemplo, el uso del adverbiointensiv o la noción de ingenium. Por último, he dedicado un amplio desarrollo a la importancia que comporta, -para entender bien la estrategia narrativa puesta en funcionamiento en el prólogo de Benjamín-, el uso de metáforas de origen cabalístico que inscriben claramente el texto en la tradición mística judía. No estoy de acuerdo en este punto con el tratamiento bastante laxo que Antoine Berman ha dado a este aspecto, que

  17. Análise crítica do desempenho evolutivo da visão subnormal no Instituto Benjamin Constant Critical analysis of the progressive performance of low vision in Benjamin Constant Institute

    Directory of Open Access Journals (Sweden)

    Helder Alves da Costa Filho

    2005-12-01

    Full Text Available OBJETIVO: Avaliar a efetividade do setor de Visão Subnormal no Instituto Benjamin Constant (IBC e comprovar a real necessidade de um Instituto nos moldes do Instituto Benjamin Constant na atual política de inclusão. MÉTODOS: Estudo ecológico, realizado de 1º de outubro de 1990 a 20 de dezembro de 2002, analisando três períodos de atendimento no setor de Visão Subnormal no Instituto Benjamin Constant: a 1991 - início do atendimento; b 1995 - integração médico-pedagógica; c 2002 - estágio atual. Nesta análise foram estudados os seguintes indicadores: I - número de atendimentos no setor de Visão Subnormal; II - condições do setor de Visão Subnormal no Instituto Benjamin Constant e III - associados. RESULTADOS: Observou-se aumento do atendimento, que passou a ser mais abrangente após a integração médico-pedagógica. Outros indicadores, como a capacitação de profissionais médicos, a participação em cursos de capacitação no Instituto Benjamin Constant, o aumento do número de convênios e encaminhamentos para o Instituto Benjamin Constant, além da Reabilitação, também confirmam a efetividade do setor de Visão Subnormal no Instituto Benjamin Constant. CONCLUSÕES: O setor de Visão Subnormal mostrou ser a interface entre o serviço médico e o serviço pedagógico, passando a interagir posteriormente com a Reabilitação e a Coordenação de Educação Física. Isto acarretou mudança de postura de diferentes setores do Instituto Benjamin Constant com relação ao paciente portador de visão subnormal, desde o educando até o paciente da comunidade. Desse modo, o Instituto Benjamin Constant mostrou a sua utilidade no tocante à política de inclusão.PURPOSE: To evaluate effectiveness of the Low Vision the Benjamin Constant Institute (BCI and confirm the real necessity of an Institute like BCI in the present inclusion policy. METHODS: Ecological study, analyzing 3 periods of Low Vision Assistance at the Benjamin

  18. Elipses y parábolas de la experiencia. La obra de Franz Kafka según Walter Benjamin

    Directory of Open Access Journals (Sweden)

    García Roldán, Daniel

    2009-10-01

    Full Text Available Kafka’s work is defined by Benjamin as encompassing both sides of the notion of experience; mystical tradition and the experience of modernity. This essay looks at that idea, and explores the historical, social and intellectual relationships between both authors.Walter Benjamin define la obra de Franz Kafka como una elipse cuyos focos son la experiencia de la tradición mística y la experiencia de la modernidad. En el siguiente ensayo se dilucida esta interpretación de Benjamin y se exploran las correspondencias históricas, sociales e intelectuales existentes entre ambos autores.

  19. Variación patogénica y fuentes de resistencia a Colletotrichum lindemuthianum Sacc & magn Scrib., patógeno de la antracnosis del frijol, en Colombia Variación patogénica y fuentes de resistencia a Colletotrichum lindemuthianum (Sacc & Magn) Scrib., patógeno de la antracnosis del fríjol, en Colombia

    OpenAIRE

    Cobo S. Felipe; Pastor Corrales Marcial A.

    1987-01-01

    Pathogenic variation studies with colombian isolates of Colletotrichum lindemuthianum (Sacc & Magn) Scrib., the anthracnose bean pathogen, were conducted under laboratory and greenhouse conditions at CIAT, Colombia. In addition, bean germplam with cormercial grain color was evaluated with the objective of identifying resistant varieties and sources of resistance to the existing variation. To this purpose, 17 isolates of C. lindemuthianum collected at the principal Colombian bean zones, we...

  20. [Distributions and associations between duration of sleep, daytime naps and insomnia symptoms among Chinese adults].

    Science.gov (United States)

    Zheng, B; Lin, L L; Yu, C Q; Lyu, J; Guo, Y; Bian, Z; Tan, Y L; Pei, P; Chen, J S; Chen, Z M; Li, L M

    2017-04-10

    Objective: To investigate the distribution of sleep duration, daytime naps habits, and insomnia-related symptoms among participants from the China Kadoorie Biobank (CKB) study, and to examine the associations between the sleep-associated factors. Methods: A self-designed computer-based questionnaire was adopted to collect social-demographic information and lifestyle-related factors of the participants. A total of 452 829 Chinese adults aged 30-79 years, without self-reported histories of coronary heart disease, stroke, chronic obstructive pulmonary diseases or cancer, were included in this study. General linear regression and multinomial logistic regression models were used to estimate the distributions on duration of sleep, daytime naps habits, and insomnia-related symptoms in different populations, after adjusted for gender, age, and residential regions. Gender-specific logistic regression model was adopted to examine the associations between the above mentioned sleep-related factors. Results: The average sleep duration of the participants was 7.41 hours per day, with 20.3% of them having daytime naps all year round, but 40.1% only had daytime naps in summer, and 39.6% had no habits of daytime naps. 11.0%, 10.0%, and 2.1% of the participants reported having had symptoms as difficulty in falling asleep, waking up too early or with daytime dysfunction, respectively. There were significant differences on the distributions in sleep-related factors between participants with different gender, age, residential areas, education levels,household income, and marital status (Psleep duration was associated with lower risks of insomnia-related symptoms trend (Psleep duration were more likely to have the habit of taking daytime naps (Psleep duration, habits on daytime naps and insomnia-related symptoms varied according to the differences on social-demographic factors. There were associations existed between the sleeping-related factors, which would influence the promotion on

  1. The association between daytime napping and cognitive functioning in chronic fatigue syndrome.

    Directory of Open Access Journals (Sweden)

    Zoe M Gotts

    Full Text Available The precise relationship between sleep and physical and mental functioning in chronic fatigue syndrome (CFS has not been examined directly, nor has the impact of daytime napping. This study aimed to examine self-reported sleep in patients with CFS and explore whether sleep quality and daytime napping, specific patient characteristics (gender, illness length and levels of anxiety and depression, predicted daytime fatigue severity, levels of daytime sleepiness and cognitive functioning, all key dimensions of the illness experience.118 adults meeting the 1994 CDC case criteria for CFS completed a standardised sleep diary over 14 days. Momentary functional assessments of fatigue, sleepiness, cognition and mood were completed by patients as part of usual care. Levels of daytime functioning and disability were quantified using symptom assessment tools, measuring fatigue (Chalder Fatigue Scale, sleepiness (Epworth Sleepiness Scale, cognitive functioning (Trail Making Test, Cognitive Failures Questionnaire, and mood (Hospital Anxiety and Depression Scale.Hierarchical Regressions demonstrated that a shorter time since diagnosis, higher depression and longer wake time after sleep onset predicted 23.4% of the variance in fatigue severity (p <.001. Being male, higher depression and more afternoon naps predicted 25.6% of the variance in objective cognitive dysfunction (p <.001. Higher anxiety and depression and morning napping predicted 32.2% of the variance in subjective cognitive dysfunction (p <.001. When patients were classified into groups of mild and moderate sleepiness, those with longer daytime naps, those who mainly napped in the afternoon, and those with higher levels of anxiety, were more likely to be in the moderately sleepy group.Napping, particularly in the afternoon is associated with poorer cognitive functioning and more daytime sleepiness in CFS. These findings have clinical implications for symptom management strategies.

  2. Relationship between napping during night shift work and household obligations of female nursing personnel.

    Science.gov (United States)

    Silva-Costa, Aline; Fischer, Frida Marina; Griep, Rosane Harter; Rotenberg, Lúcia

    2013-01-01

    Night shift employment involves displacing sleep to the daytime. For female workers, the opportunity for daytime sleep is influenced by routine housework demands, which aggravates sleep deprivation. Allowing naps to be taken during the night shift of work is a frequent practice at some hospitals and can help reduce the effects of sleep deprivation. We hypothesize that an association between domestic work and the length of naps during night work exists for nursing professionals. To test this hypothesis, two cross-sectional studies were conducted in two different hospitals. In Study 1, female workers answered questionnaires regarding sleeping habits, professional work, and housework demands. In Study 2, data regarding napping during shifts was obtained by actigraphy, a noninvasive method of monitoring the human sleep-wake cycle. The demand for the performance of housework was measured by (i) domestic work hours (total time spent performing domestic work per week), and (ii) domestic workload, which considers the degree of sharing domestic tasks and the number of people living at home. The populations from the two studies were subdivided into groups, based on the duration of napping at work. Data on naps were analyzed according to domestic demands, using the Mann-Whitney and Chi-squared tests. Among the two study populations (Studies 1 and 2), those in Study 2 were older, had shorter professional weekly work hours, worked more night shifts, and dedicated more time to housework. significant associations were only found in Study 2, where greater time napping at work was associated with both greater time spent doing housework and greater domestic workload. The known benefits of napping during night shifts seem to be especially relevant for female workers who are more sleep-deprived from working more night shifts and who have higher demands for housework.

  3. Reconsidering the sporulation characteristics of hypervirulent Clostridium difficile BI/NAP1/027.

    Directory of Open Access Journals (Sweden)

    David A Burns

    Full Text Available Clostridium difficile is the leading cause of antibiotic-associated diarrhoea and a major burden to healthcare services worldwide. In recent years, C. difficile strains belonging to the BI/NAP1/027 type have become highly represented among clinical isolates. These so-called 'hypervirulent' strains are associated with outbreaks of increased disease severity, higher relapse rates and an expanded repertoire of antibiotic resistance. Spores, formed during sporulation, play a pivotal role in disease transmission and it has been suggested that BI/NAP1/027 strains are more prolific in terms of sporulation in vitro than 'non-epidemic' C. difficile types. Work in our laboratory has since provided credible evidence to the contrary suggesting that the strain-to-strain variation in C. difficile sporulation characteristics is not type-associated. However, the BI/NAP1/027 type is still widely stated to have an increased rate of sporulation. In this study, we analysed the sporulation rates of 53 C. difficile strains, the largest sample size used to-date in such a study, including 28 BI/NAP1/027 isolates. Our data confirm that significant variation exists in the rate at which different C. difficile strains form spores. However, we clearly show that the sporulation rate of the BI/NAP1/027 type was no higher than that of non-BI/NAP1/027 strains. In addition, we observed substantial variation in sporulation characteristics within the BI/NAP1/027 type. This work highlights the danger of assuming that all strains of one type behave similarly without studying adequate sample sizes. Furthermore, we stress the need for more rigorous experimental procedures in order to quantify C. difficile sporulation more accurately in the future.

  4. Eficiencia biológica de cepas nativas de Trichoderma spp., en el control de Sclerotium rolfsii Sacc., en cacahuate

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    A. C. Michel-Aceves

    2013-01-01

    Full Text Available En el control de Sclerotium rolfsii Sacc., se evaluó el efecto antagónico de aislados nativos de Trichoderma spp., bajo condiciones in vitro y de invernadero, en la zona Norte del estado de Guerrero. Se obtuvieron doce aislados nativos de Trichoderma spp. (dos de Santa Teresa y diez de Tlaxmalac, Gro., de los cuales se seleccionaron seis (Tcn-4, Tcn-5, Tcn-6, Tcn-7, Tcn-8 y Tcn-11 mediante el método del papel celofán. En condiciones in vitro, el porcentaje de inhibición varió desde 10 a 94.40%; registrándose mediante la técnica de cultivos apareados el antagonismo clase dos en el aislado Tcn-11; en estas condiciones, inhibió el crecimiento del fitopatógeno y evitó su desarrollo en el 80% de la superficie del medio en la caja de Petri. En condiciones de invernadero se evaluó la cepa nativa Tcn-11 identificada morfológica y genéticamente como T. harzianum Rifai y se comparó con una cepa de la colección (Thzcf-12 y un fungicida comercial en tres tiempos de inoculación. El fitopatógeno S. rolfsii no fue suficientemente agresivo para ocasionar la muerte de la planta de cacahuate; sin embargo, se observaron efectos negativos en su desarrollo y producción de semillas. Las cepas Tcn-11 y Thzcf-12 fueron capaces de contribuir al desarrollo de la planta de cacahuate y ayudar a protegerla de la infección de S. rolfsii de manera más eficiente que el fungicida pentacloro nitrobenceno (PCNB.

  5. Obituary: Benjamin Franklin Peery Jr. (1922-2010)

    Science.gov (United States)

    Cowley, Charles

    2011-12-01

    Professor Benjamin F. Peery, Jr. died at his home in Silver Spring, MD of natural causes on 30 November 2010. His full life began in St. Joseph, MO (home of the Pony Express) on 4 March 1922. His father was a railway mail clerk, so his family moved frequently. Most of his childhood was spent in southeastern Minnesota. He enlisted in the army in 1942, and served in campaigns in North Africa and Italy. After his discharge in 1945, he enrolled in the University of Minnesota, earning a BS in Physics in 1949. One of his early hobbies was to build and fly model airplanes. His intention to pursue aeronautical engineering changed to physics, but after receiving a MS in physics from Fisk University in 1955, he decided on a career in astronomy. He told the editors of the PBS series The Astronomers (1991, in which his career is highlighted) he thought it was shamefully absurd not to know what made the stars shine. So he began PhD studies in astronomy at the University of Michigan (Ann Arbor). His dissertation was on the complex eclipsing binary VV Cephei, where a compact hot star passes behind a cool giant star, revealing the structure of that giant's atmosphere. This task was especially demanding because of the complexity of the system's spectrum and the formidable array of observations assembled by Ben's advisor, Dean McLaughlin. Fortunately, Ben's strong physics background enabled him to design and construct one of the first oscilloscope measuring engines, which his fellow students called the PeeryScope. The final (1961) dissertation is an impressive combination of observational and astrophysical analysis. His degree was obtained in 1962; he had already begun a career at the University of Indiana, where he taught and did research (1959--1976). The Indiana years were highly productive. In addition to his own research, he was advisor on six PhD dissertations, and a master's thesis. Several of his students have also had productive careers. An ADS search on his students' names

  6. Afternoon Napping and Cognition in Chinese Older Adults: Findings from the China Health and Retirement Longitudinal Study Baseline Assessment.

    Science.gov (United States)

    Li, Junxin; Cacchione, Pamela Z; Hodgson, Nancy; Riegel, Barbara; Keenan, Brendan T; Scharf, Mathew T; Richards, Kathy C; Gooneratne, Nalaka S

    2017-02-01

    To examine the cross-sectional associations between self-reported postlunch napping and structured cognitive assessments in Chinese older adults. Cross-sectional cohort study. China. Individuals aged 65 and older from the baseline national wave of the China Health and Retirement Longitudinal Study (CHARLS) (N = 2,974). Interview-based cognitive assessments of orientation and attention, episodic memory, visuospatial abilities, and a combined global cognition score incorporating these assessments. Other self-reported or interview-based assessments included postlunch napping duration, nighttime sleep duration, demographic characteristics, health habits, comorbidities, functional status and social activities. According to reported napping duration, older adults were categorized as non-nappers (0 minutes), short nappers (90 minutes). Postlunch napping was reporting in 57.7% of participants for a mean of 63 minutes. Cognitive function was significantly associated with napping (P cognition than nonnappers (P cognition than short nappers (P = .03). In multiple regression analysis, moderate napping was significantly associated with better cognition than non- (P = .004), short (P = .04), and extended napping (P = .002), after controlling for demographic characteristics, body mass index, depression, instrumental activities of daily living, social activities, and nighttime sleep duration. A cross-sectional association was found between moderate postlunch napping and better cognition in Chinese older adults. The cross-sectional design and self-reported measures of sleep limited the findings. Longitudinal studies with objective napping measures are needed to further test this hypothesis. © 2016, Copyright the Authors Journal compilation © 2016, The American Geriatrics Society.

  7. Manejo da murcha de escler?cio (Sclerotium rolfsii Sacc) em piment?o e sele??o de acessos de Capsicum Sp. Resistentes

    OpenAIRE

    Soares, Jo?o Vitor Camargo

    2013-01-01

    A murcha de escler?cio, causada pelo fungo Sclerotium rolfsii Sacc. ? uma doen?a de dif?cil controle, ocasionando elevadas perdas em cultivos de pimentas e piment?o no Estado do Amazonas, sendo fundamental o conhecimento do pat?geno, visando o estabelecimento de estrat?gias de manejo da doen?a e fornecer subs?dios para estudos de resist?ncia. Este trabalho objetivou-se em avaliar a resist?ncia de 20 gen?tipos de Capsicum sp ao isolado, sendo realizado um pr? teste de agressividade com dez iso...

  8. Implantación de la 5S y de la metodología de aprendizaje SACC en una empresa de embalaje

    OpenAIRE

    Rodríguez Almazán, Alejandro

    2015-01-01

    El presente proyecto trata sobre dos temas. El primero es la implantación de las 5S en una empresa de embalaje. El segundo, contribuir a la formación de esta metodología mediante el desarrollo de un seminario de aprendizaje SACC que aborde todos los aspectos necesarios para implantar las 5S. Para lograr la implantación necesitamos una visión general de las 5S y conocer los pasos previos para implantarla. Una vez hecho, el siguiente paso es evaluar el proceso de implantación. Con el seminar...

  9. Implantación de la 5S y de la metodología de aprendizaje SACC en una empresa de embalaje

    OpenAIRE

    Rodríguez Almazán, Alejandro

    2015-01-01

    El presente proyecto trata sobre dos temas. El primero es la implantación de las 5S en una empresa de embalaje. El segundo, contribuir a la formación de esta metodología mediante el desarrollo de un seminario de aprendizaje SACC que aborde todos los aspectos necesarios para implantar las 5S. Para lograr la implantación necesitamos una visión general de las 5S y conocer los pasos previos para implantarla. Una vez hecho, el siguiente paso es evaluar el proceso de implantación. Con el seminar...

  10. Perspectivas del uso de bacterias rizosféricas en el control de pyricularia grisea (cooke sacc.) en el cultivo del arroz (oryza sativa l.)

    OpenAIRE

    Acebo Guerrero, Yanelis; Hernández-Rodríguez, Annia; Rives Rodríguez, Narovis; Hernández-Lauzardo, Ana Niurka

    2011-01-01

    Prospect of the use of bacteria in the control Pyricularia grisea (Cooke Sacc.) on rice (Oriza sativa L.) Título corto: Bacterias rizosféricas para controlar la piriculariosis ResumenEl arroz es fuente de alimento para una gran parte de la población mundial, con alto promedio de consumo anual. En este cultivo las enfermedades de origen microbiano constituyen uno de los factores que inciden en la obtención de bajos rendimientos y calidad de los granos. La piriculariosis o añublo del arroz, cau...

  11. Perspectivas del uso de bacterias rizosféricas en el control de Pyricularia grisea (Cooke Sacc.) en el cultivo del arroz (Oryza sativa L.)

    OpenAIRE

    Yanelis Acebo Guerrero; Annia Hernández-Rodríguez; Narovis Rives Rodríguez; Ana Niurka Hernández-Lauzardo

    2011-01-01

    Prospect of the use of bacteria in the control Pyricularia grisea (Cooke Sacc.) on rice (Oriza sativa L.) Título corto: Bacterias rizosféricas para controlar la piriculariosis ResumenEl arroz es fuente de alimento para una gran parte de la población mundial, con alto promedio de consumo anual. En este cultivo las enfermedades de origen microbiano constituyen uno de los factores que inciden en la obtención de bajos rendimientos y calidad de los granos. La piriculariosis o añublo del arroz, cau...

  12. Fases da história da fotografia e a questão da aura, segundo Walter Benjamin

    OpenAIRE

    Orlando José Ribeiro de Oliveira; Marília Flores Seixas de Oliveira

    2014-01-01

    This article addresses the periods in the history of photography proposed by Walter Benjamin in his essay A Short History of Photography, and discusses the transformation suffered by the work of art in modern times, under ther concept of aura. The periodization established by Benjamin - heydey, decline, revival - is illustrated with works from photographers referred to by the author in his text, which amis to achieve a “real understanting of the essence of the photographic art.” Este artig...

  13. The effects of biperiden on nap sleep after sleep deprivation in depressed patients.

    Science.gov (United States)

    Dressing, H; Riemann, D; Gann, H; Berger, M

    1992-08-01

    Sixteen patients with a major depressive disorder were allowed to take a nap at 5 A.M. after a period of total sleep deprivation. The patients were randomly assigned to biperiden or placebo treatment prior to the nap to test the hypothesis that anticholinergic medication is capable of preventing a nap-related worsening of mood. Total sleep deprivation positively influenced mood for the whole group. Contrary to expectations, the rate of nap-related relapses of mood did not differ between placebo- and biperiden-treated individuals, and biperiden did not significantly suppress rapid eye movement (REM) sleep. There was only a tendency for lower REM time after administration of biperiden compared to placebo. This unexpected result may be due to a high cholinergic tone in the patient group investigated and a high REM propensity in the early morning hours. Studies with more selective M1/M2 receptor antagonists are necessary to clarify whether nap-related changes of mood can be prevented by anticholinergic blockade.

  14. Nap and melatonin-induced changes in hippocampal activation and their role in verbal memory consolidation.

    Science.gov (United States)

    Gorfine, Tali; Yeshurun, Yaara; Zisapel, Nava

    2007-11-01

    Overnight sleep contributes to memory consolidation; even a short nap improves memory performance. Such improvement has been linked to hippocampal activity during sleep. Melatonin has been shown to affect the human hippocampus and to induce 'sleep like' changes in brain activation. We therefore conducted and compared two functional magnetic resonance imaging studies: the first study assessed the effect of a 2-hr mid-day nap versus an equal amount of wakefulness on a verbal memory task (unrelated word pair association); the second assessed the effect of melatonin versus placebo (both conditions without nap) on a similar task. We report that following a nap relative to wakefulness, successful retrieval-related activation in the parahippocampus is decreased. A smaller decrease is seen in wakefulness with melatonin but not placebo. In parallel, an improvement in verbal memory recall was found after a nap compared with wakefulness but not with melatonin during wakefulness compared with placebo. Our findings demonstrate effects of melatonin that resemble those of sleep on verbal memory processing in the hippocampus thus suggesting that melatonin, like sleep, can initiate offline plastic changes underlying memory consolidation; they also suggest that concomitant rest without interferences is necessary for enhanced performance.

  15. Da bambini intorno al Millenovecento. Frammenti d’infanzia nelle riflessioni di Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Anna Lazzarini

    2016-02-01

    Full Text Available The text aims at analyzing the complex and refined anthropology of childhood that takes shape in the pages of Walter Benjamin. This anthropology of childhood is deeply rooted in his memories of child “around 1900” and is patiently reconstructed from the picture books, from the games and the vintage toys, from the images and the characters that fill fantastic stories and fairy tales, from domestic and family rituals, from the world of objects and atmospheres of the bourgeois intérieur, Above all, this anthropology brings to light images. These images have a peculiar feature, a distinctive sign: they seem brought together by the idea and the experience of the threshold, a crucial figure in the epistemology of Benjamin.

  16. Sul Baudelaire di Walter Benjamin Dalla teoria della traduzione alla sociologia della letteratura

    Directory of Open Access Journals (Sweden)

    Andrea D'Urso

    2016-01-01

    Full Text Available I vivaci studi italiani degli scritti di Benjamin sulla poesia di Baudelaire (editi da Solmi nel 1962 hanno spesso trascurato l’importanza di allargare la propria prospettiva all’edizione francese del 1974 (Payot, contenente tre importanti saggi noti in Germania dalla fine degli anni ’60. Poiché tali testi sono stati finalmente tradotti in italiano solo nel 2006 (Einaudi e ripubblicati nel 2012 in un’edizione più articolata (Neri Pozza, ci proponiamo di rilanciare un nostro studio a partire dalla versione italiana, per mostrare come essi gettino le basi della sociologia materialista della letteratura di Benjamin, ancora insufficientemente esplorata. Formatasi proprio muovendo dalla pratica traduttiva dei Quadri parigini, essa ha analizzato il ruolo della bohème, del flâneur e della modernità nell’eroismo lirico di Baudelaire all’apogeo del capitalismo.

  17. Nucleosome Assembly Protein 1-Like 1 (Nap1l1 Regulates the Proliferation of Murine Induced Pluripotent Stem Cells

    Directory of Open Access Journals (Sweden)

    Yuan Yan

    2016-01-01

    Full Text Available Background/Aims: To investigate whether nucleosome assembly protein 1-like 1 (Nap1l1 regulates the proliferation of induced pluripotent stem cells (iPSC and the potential mechanisms. Methods: Nap1l1-knockdown-iPSC and Nap1l1-overexpression-iPSC were constructed by transfection of lentiviral particles. The proliferation of iPSC was detected by MTT analysis, and cell cycle was analyzed by flow cytometry. Results: Nap1l1 overexpression promoted iPSC proliferation and induced G2/M transition compared to their control iPSC while Nap1l1-knockdown-iPSC dramatically displayed the reduced proliferation and accumulated G2/M phase cells. Further analysis showed that Nap1l1 overexpression in iPSC increased the expression of cyclin B1, downregulated the expression of p21 and p27, while knockdown of Nap1l1 showed the opposite effects. In addition, overexpression of Nap1l1 promoted the phosphorylation of AKT and ERK in iPSC, while knockdown of Nap1l1 inhibited the effects. However, these effects displayed in Nap1l1-overexpression-iPSC were greatly suppressed by the inhibition of AKT or ERK signaling. Conclusions: The results indicate that Nap1l1 promotes the proliferation of iPSC attributable to G2/M transition caused by downregulation of p27 and p21, and upregulation of cyclin B1, the activation of AKT or ERK is involved in the process. The present study has revealed a novel molecular mechanism involved in the proliferation of iPSC.

  18. Electrotherapy for melancholia: the pioneering contributions of Benjamin Franklin and Giovanni Aldini.

    Science.gov (United States)

    Bolwig, Tom G; Fink, Max

    2009-03-01

    The electrical induction of seizures with a therapeutic aim began in 1938, but the history of electric currents to relieve mental illness began 2 centuries earlier with the pioneering work of the Italian Giovanni Aldini and the American Benjamin Franklin.These early experiments are described demonstrating that the electrical force encouraged hopeful applications. This history emphasizes the unique contribution in the induction of grand mal seizures as the therapeutic basis rather than the role of electricity alone.

  19. On the local well-posedness of a Benjamin-Ono-Boussinesq system

    Directory of Open Access Journals (Sweden)

    Ruying Xue

    2005-01-01

    Full Text Available Consider a Benjamin-Ono-Boussinesq system ηt+ux+auxxx+(uηx=0,ut+ηx+uux+cηxxx−duxxt=0, where a, c, and d are constants satisfying a=c>0, d>0 or a0. We prove that this system is locally well posed in Sobolev space Hs(ℝ×Hs+1(ℝ, with s>1/4.

  20. A New Method for Constructing Travelling Wave Solutions to the modified Benjamin-Bona-Mahoney Equation

    Institute of Scientific and Technical Information of China (English)

    WANG Jun-Mao; ZHANG Miao; ZHANG Wen-Liang; ZHANG Rui; HAN Jia-Hua

    2008-01-01

    We present a new method to find the exact travelling wave solutions of nonlinear evolution equations, with the aid of the symbolic computation. Based on this method, we successfully solve the modified Benjamin-Bona-Mahoney equation, and obtain some new solutions which can be expressed by trigonometric functions and hyperbolic functions. It is shown that the proposed method is direct, effective and can be used for many other nonlinear evolution equations in mathematical physics.

  1. Per una critica dell'immaginario pop: da Benjamin a Baudrillard e ritorno

    Directory of Open Access Journals (Sweden)

    Vanni Codeluppi

    2016-03-01

    Full Text Available In the last decades, critical analysis renounced to attack the pop imaginary. This article sustain that it’s possible reactivate this analysis if we consider the works of some scholars from the past. Therefore, this essay analyze the works of Benjamin, McLuhan, Barthes, Eco, but also those of the Birmingham School and of the cultural studies. Above all, analyze in deep the work of Jean Baudrillard.

  2. Per una critica dell'immaginario pop: da Benjamin a Baudrillard e ritorno

    Directory of Open Access Journals (Sweden)

    Vanni Codeluppi

    2015-12-01

    Full Text Available In the last decades, critical analysis renounced to attack the pop imaginary. This article sustain that it’s possible reactivate this analysis if we consider the works of some scholars from the past. Therefore, this essay analyze the works of Benjamin, McLuhan, Barthes, Eco, but also those of the Birmingham School and of the cultural studies. Above all, analyze in deep the work of Jean Baudrillard.

  3. Traveling Wave Solutions of the Benjamin-Bona-Mahony Water Wave Equations

    Directory of Open Access Journals (Sweden)

    A. R. Seadawy

    2014-01-01

    Full Text Available The modeling of unidirectional propagation of long water waves in dispersive media is presented. The Korteweg-de Vries (KdV and Benjamin-Bona-Mahony (BBM equations are derived from water waves models. New traveling solutions of the KdV and BBM equations are obtained by implementing the extended direct algebraic and extended sech-tanh methods. The stability of the obtained traveling solutions is analyzed and discussed.

  4. Electrotherapy for melancholia: the pioneering contributions of Benjamin Franklin and Giovanni Aldini

    DEFF Research Database (Denmark)

    Bolwig, Tom G; Fink, Max

    2009-01-01

    The electrical induction of seizures with a therapeutic aim began in 1938, but the history of electric currents to relieve mental illness began 2 centuries earlier with the pioneering work of the Italian Giovanni Aldini and the American Benjamin Franklin.These early experiments are described...... demonstrating that the electrical force encouraged hopeful applications. This history emphasizes the unique contribution in the induction of grand mal seizures as the therapeutic basis rather than the role of electricity alone....

  5. Recensión a Crítica a la violencia de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    José Javier Ordoñez Etxeverria

    2014-03-01

    Full Text Available Inicialmente, Benjamin busca dónde encontrar la violencia que desea someter a crítica. Y la encuentra en el derecho: la relación fundamental y más elemental de todo ordenamiento jurídico es la de fin y medio; y la violencia, para comenzar, sólo puede ser buscada en el reino de los medios y no en el de los fines.

  6. Avi Benjamin vahetas labajalavaltseri sünagoogimuusika vastu / Aarne Ruben

    Index Scriptorium Estoniae

    Ruben, Aarne, 1971-

    2007-01-01

    Juuditemaatikat käsitlevatest filmidest : Steven Spielbergi mängufilm "München" ("Munich"), Ameerika Ühendriigid 2005; dokumentaalfilm "Su nimi olgu Iisrael", režissöör Peeter Brambat, Adel TV 2004, Maiju Ingmani muusikaline portreefilm "Tagasitulek koju" Eesti päritolu Iisraeli heliloojast ja pianistist Avi Nedzvetskist (Iisraelis tuntud kui Avi Benjamin), Adel TV, 2007. Kahe viimase filmi käsikiri Irina Stelmachilt

  7. Avi Benjamin vahetas labajalavaltseri sünagoogimuusika vastu / Aarne Ruben

    Index Scriptorium Estoniae

    Ruben, Aarne, 1971-

    2007-01-01

    Juuditemaatikat käsitlevatest filmidest : Steven Spielbergi mängufilm "München" ("Munich"), Ameerika Ühendriigid 2005; dokumentaalfilm "Su nimi olgu Iisrael", režissöör Peeter Brambat, Adel TV 2004, Maiju Ingmani muusikaline portreefilm "Tagasitulek koju" Eesti päritolu Iisraeli heliloojast ja pianistist Avi Nedzvetskist (Iisraelis tuntud kui Avi Benjamin), Adel TV, 2007. Kahe viimase filmi käsikiri Irina Stelmachilt

  8. How to Read (With Benjamin: From Cultural History of Materialism to Materialist History of Culture

    Directory of Open Access Journals (Sweden)

    Patrick Healy

    2016-05-01

    Full Text Available Footprint 18 investigates the following issues: what Benjamin understands by the ‘constellation of awakening’, how he conceptualises ‘dialectical images’, his deployment of montage, his refusal of a conception of either progress or decline, and his undertaking to show that the images belong not only to a particular time but attain legibility only at a particular time. Famously, according to Benjamin, image is that wherein what has been comes together in a flash with the now to form a constellation. With regard to the architectural theory Benjamin engaged directly with the tectonic tradition, especially the work of Bötticher. He posited the tectonic unconscious and the deployment of optical instruments as crucial for understanding the development which architecture carried from the luxus capitalist forms of commodity. In light of technical innovations in iron and glass, it expressed a form of projective dream work of the architectural around material realisations as products of the industrial revolution, with long consequences for the future.

  9. A experiência urbana nos comentários de Benjamin aos poemas de Brecht

    Directory of Open Access Journals (Sweden)

    Luciano Gatti

    Full Text Available O artigo aborda os comentários de Walter Benjamin aos poemas do ciclo "Manual para habitantes das cidades" de Bertolt Brecht, a fim de discutir a especificidade da lírica brechtiana no quadro mais geral da reflexão de Benjamin sobre a lírica urbana moderna. Benjamin retoma duas questões decisivas à constituição da obra de Brecht: a sobriedade da linguagem e o ensinamento como forma de transmissão da experiência urbana e política. Esse vínculo entre experiência e transmissão não se reduz à instrução de condições de sobrevivência na cidade grande, mas se constitui, sobretudo, no aprendizado de uma postura crítica perante a cidade. Enquanto a comunicação entre indivíduos isolados é precária e a organização política aproxima-se da ilegalidade, os poemas almejam a constituição de um vínculo entre "eu" e "tu" por meio da reflexão poética da experiência urbana.

  10. Identification of seed-specific promoter nap300 and its comparison with 7S promoter

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    By fusing seed-specific promoter nap300 with β-glucuronidase gene, it was found that this about 300bp DNA fragment was sufficient to direct seed-specific gene expression. The substitution mutation in both distB and proxB elements had a little effect on the expression efficiency and almost no effect on the organ-specific expression pattern. In the experiment designed to compare nap300 with 7S promoter, the result showed that tissue specificity for nap300 was higher than that for 7S, and its expression level was lower than 7S's. There was no big difference in their expression pattern, and the maximal activity stage for the two promoters was identical, which indicated they could be used simultaneously for expressing different foreign genes in seeds.

  11. Rapid-Eye-Movement-Sleep (REM Associated Enhancement of Working Memory Performance after a Daytime Nap.

    Directory of Open Access Journals (Sweden)

    Esther Yuet Ying Lau

    Full Text Available The main objective was to study the impact of a daytime sleep opportunity on working memory and the mechanism behind such impact. This study adopted an experimental design in a sleep research laboratory. Eighty healthy college students (Age:17-23, 36 males were randomized to either have a polysomnography-monitored daytime sleep opportunity (Nap-group, n=40 or stay awake (Wake-group, n=40 between the two assessment sessions. All participants completed a sleep diary and wore an actigraph-watch for 5 days before and one day after the assessment sessions. They completed the state-measurement of sleepiness and affect, in addition to a psychomotor vigilance test and a working memory task before and after the nap/wake sessions. The two groups did not differ in their sleep characteristics prior to and after the lab visit. The Nap-group had higher accuracy on the working memory task, fewer lapses on the psychomotor vigilance test and lower state-sleepiness than the Wake-group. Within the Nap-group, working memory accuracy was positively correlated with duration of rapid eye movement sleep (REM and total sleep time during the nap. Our findings suggested that "sleep gain" during a daytime sleep opportunity had significant positive impact on working memory performance, without affecting subsequent nighttime sleep in young adult, and such impact was associated with the duration of REM. While REM abnormality has long been noted in pathological conditions (e.g. depression, which are also presented with cognitive dysfunctions (e.g. working memory deficits, this was the first evidence showing working memory enhancement associated with REM in daytime napping in college students, who likely had habitual short sleep duration but were otherwise generally healthy.

  12. Toddler's self-regulation strategies in a challenge context are nap-dependent.

    Science.gov (United States)

    Miller, Alison L; Seifer, Ronald; Crossin, Rebecca; Lebourgeois, Monique K

    2015-06-01

    Early childhood represents a time of developmental changes in both sleep and self-regulation, a construct reflecting the ability to control one's behaviour, attention and emotions when challenged. Links between sleep and self-regulation processes have been proposed, but experimental evidence with young children is lacking. In the current study, we tested the effects of acute sleep restriction (nap deprivation) on toddlers' self-regulation. Healthy children (n = 12; four males; aged 30-36 months (33.9 ± 1.7)) slept on a strict schedule (verified with actigraphy and sleep diaries) for 5 days before each of two afternoon assessments following a nap and a no-nap condition (~11-day protocol). Children were videotaped while attempting an unsolvable puzzle, and 10 mutually exclusive self-regulation strategies were later coded. On average, children lost ~90 min of sleep on the no-nap versus the nap day. Nap deprivation resulted in moderate-to-large effects on self-regulation strategies, with decreases in scepticism (d = 0.77; 7% change), negative self-appraisal (d = 0.92; 5% change) and increases in physical self-soothing (d = 0.68; 10% change), focus on the puzzle piece that would not fit (perseveration; d = 0.50; 9% change) and insistence on completing the unsolvable puzzle (d = 0.91; 10% change). Results suggest that sleep serves an important role in the way that toddlers respond to challenging events in their daily lives. After losing daytime sleep, toddlers were less able to engage effectively in a difficult task and reverted to less mature self-regulation strategies than when they were well rested. Over time, chronically missed sleep may impair young children's self-regulation abilities, resulting in risk for social-emotional, behavioural and school problems.

  13. Rapid-Eye-Movement-Sleep (REM) Associated Enhancement of Working Memory Performance after a Daytime Nap.

    Science.gov (United States)

    Lau, Esther Yuet Ying; Wong, Mark Lawrence; Lau, Kristy Nga Ting; Hui, Florence Wai Ying; Tseng, Chia-huei

    2015-01-01

    The main objective was to study the impact of a daytime sleep opportunity on working memory and the mechanism behind such impact. This study adopted an experimental design in a sleep research laboratory. Eighty healthy college students (Age:17-23, 36 males) were randomized to either have a polysomnography-monitored daytime sleep opportunity (Nap-group, n=40) or stay awake (Wake-group, n=40) between the two assessment sessions. All participants completed a sleep diary and wore an actigraph-watch for 5 days before and one day after the assessment sessions. They completed the state-measurement of sleepiness and affect, in addition to a psychomotor vigilance test and a working memory task before and after the nap/wake sessions. The two groups did not differ in their sleep characteristics prior to and after the lab visit. The Nap-group had higher accuracy on the working memory task, fewer lapses on the psychomotor vigilance test and lower state-sleepiness than the Wake-group. Within the Nap-group, working memory accuracy was positively correlated with duration of rapid eye movement sleep (REM) and total sleep time during the nap. Our findings suggested that "sleep gain" during a daytime sleep opportunity had significant positive impact on working memory performance, without affecting subsequent nighttime sleep in young adult, and such impact was associated with the duration of REM. While REM abnormality has long been noted in pathological conditions (e.g. depression), which are also presented with cognitive dysfunctions (e.g. working memory deficits), this was the first evidence showing working memory enhancement associated with REM in daytime napping in college students, who likely had habitual short sleep duration but were otherwise generally healthy.

  14. Inhibition coefficient and molecular diversity of multi stress tolerant Trichoderma as potential biocontrol agent against Sclerotium rolfsii Sacc.

    Science.gov (United States)

    Hirpara, Darshna G; Gajera, H P; Hirapara, Jaydeep G; Golakiya, B A

    2017-08-31

    Trichoderma is one of the most exploited biocontrol agent for the management of plant diseases. Twenty strains of Trichoderma (six of T. harzianum, four of T. viride, three of T. virens, three of T. koningii, each one of T. hamatum, T. reesei, T. parceramosum and Trichoderma spp.) subjected to in vitro antagonism up to 12days after inoculation against Sclerotium rolfsii Sacc. causing stem rot in groundnut. A new concept was developed to determine inhibition coefficient representing pathogen biology and biocontrol related biophysical variables. Results explained differential inhibition coefficient of test pathogen by Trichoderma antagonists. The inhibition coefficient of test pathogen was examined highest (91.13%) by T. virens NBAII Tvs12 followed by T. virens MTCC 794 (89.33%) and T. koningii MTCC 796 (62.39%). Microscopic study confirmed biocontrol mechanism as mycoparasitism for Tvs12 and antibiosis for T. koningii MTCC 796. The sclerotial biogenesis of test pathogen was elevated during weak antagonism and diminished in interactions with strong antagonists. The inhibition coefficient of S. rolfsii was significantly negatively correlated with sclerotia formation and lipid peroxidation during the antagonism. Trichoderma strains were screened for fungicides (carbendazim and tebuconazole, thiram and mancozeb) and abiotic stress (drought and salt) tolerance. Results indicated that T. koningii MTCC 796 efficiently grew better than the other strains with maximum radial growth under adverse conditions. The genetic variability among the Trichoderma was determined using 34 gene specific markers which amplified 146 alleles. The SSR similarities explained substantial diversity (15 to 87%) across Trichoderma strains and pathogen S. rolfsii. Principal coordinates analysis (PCA) were comparable to the cluster analysis and first three most informative PC components explained 64.45% of the total variation. In PCA, potent antagonists appear to be distinct from other strains. Five

  15. KSHV encoded LANA recruits Nucleosome Assembly Protein NAP1L1 for regulating viral DNA replication and transcription

    Science.gov (United States)

    Gupta, Namrata; Thakker, Suhani; Verma, Subhash C.

    2016-09-01

    The establishment of latency is an essential for lifelong persistence and pathogenesis of Kaposi’s sarcoma-associated herpesvirus (KSHV). Latency-associated nuclear antigen (LANA) is the most abundantly expressed protein during latency and is important for viral genome replication and transcription. Replication-coupled nucleosome assembly is a major step in packaging the newly synthesized DNA into chromatin, but the mechanism of KSHV genome chromatinization post-replication is not understood. Here, we show that nucleosome assembly protein 1-like protein 1 (NAP1L1) associates with LANA. Our binding assays revealed an association of LANA with NAP1L1 in KSHV-infected cells, which binds through its amino terminal domain. Association of these proteins confirmed their localization in specific nuclear compartments of the infected cells. Chromatin immunoprecipitation assays from NAP1L1-depleted cells showed LANA-mediated recruitment of NAP1L1 at the terminal repeat (TR) region of the viral genome. Presence of NAP1L1 stimulated LANA-mediated DNA replication and persistence of a TR-containing plasmid. Depletion of NAP1L1 led to a reduced nucleosome positioning on the viral genome. Furthermore, depletion of NAP1L1 increased the transcription of viral lytic genes and overexpression decreased the promoter activities of LANA-regulated genes. These results confirmed that LANA recruitment of NAP1L1 helps in assembling nucleosome for the chromatinization of newly synthesized viral DNA.

  16. Afternoon nap and bright light exposure improve cognitive flexibility post lunch.

    Science.gov (United States)

    Slama, Hichem; Deliens, Gaétane; Schmitz, Rémy; Peigneux, Philippe; Leproult, Rachel

    2015-01-01

    Beneficial effects of napping or bright light exposure on cognitive performance have been reported in participants exposed to sleep loss. Nonetheless, few studies investigated the effect of these potential countermeasures against the temporary drop in performance observed in mid-afternoon, and even less so on cognitive flexibility, a crucial component of executive functions. This study investigated the impact of either an afternoon nap or bright light exposure on post-prandial alterations in task switching performance in well-rested participants. Twenty-five healthy adults participated in two randomized experimental conditions, either wake versus nap (n=15), or bright light versus placebo (n=10). Participants were tested on a switching task three times (morning, post-lunch and late afternoon sessions). The interventions occurred prior to the post-lunch session. In the nap/wake condition, participants either stayed awake watching a 30-minute documentary or had the opportunity to take a nap for 30 minutes. In the bright light/placebo condition, participants watched a documentary under either bright blue light or dim orange light (placebo) for 30 minutes. The switch cost estimates cognitive flexibility and measures task-switching efficiency. Increased switch cost scores indicate higher difficulties to switch between tasks. In both control conditions (wake or placebo), accuracy switch-cost score increased post lunch. Both interventions (nap or bright light) elicited a decrease in accuracy switch-cost score post lunch, which was associated with diminished fatigue and decreased variability in vigilance. Additionally, there was a trend for a post-lunch benefit of bright light with a decreased latency switch-cost score. In the nap group, improvements in accuracy switch-cost score were associated with more NREM sleep stage N1. Thus, exposure to bright light during the post-lunch dip, a countermeasure easily applicable in daily life, results in similar beneficial effects as

  17. Afternoon nap and bright light exposure improve cognitive flexibility post lunch.

    Directory of Open Access Journals (Sweden)

    Hichem Slama

    Full Text Available Beneficial effects of napping or bright light exposure on cognitive performance have been reported in participants exposed to sleep loss. Nonetheless, few studies investigated the effect of these potential countermeasures against the temporary drop in performance observed in mid-afternoon, and even less so on cognitive flexibility, a crucial component of executive functions. This study investigated the impact of either an afternoon nap or bright light exposure on post-prandial alterations in task switching performance in well-rested participants. Twenty-five healthy adults participated in two randomized experimental conditions, either wake versus nap (n=15, or bright light versus placebo (n=10. Participants were tested on a switching task three times (morning, post-lunch and late afternoon sessions. The interventions occurred prior to the post-lunch session. In the nap/wake condition, participants either stayed awake watching a 30-minute documentary or had the opportunity to take a nap for 30 minutes. In the bright light/placebo condition, participants watched a documentary under either bright blue light or dim orange light (placebo for 30 minutes. The switch cost estimates cognitive flexibility and measures task-switching efficiency. Increased switch cost scores indicate higher difficulties to switch between tasks. In both control conditions (wake or placebo, accuracy switch-cost score increased post lunch. Both interventions (nap or bright light elicited a decrease in accuracy switch-cost score post lunch, which was associated with diminished fatigue and decreased variability in vigilance. Additionally, there was a trend for a post-lunch benefit of bright light with a decreased latency switch-cost score. In the nap group, improvements in accuracy switch-cost score were associated with more NREM sleep stage N1. Thus, exposure to bright light during the post-lunch dip, a countermeasure easily applicable in daily life, results in similar

  18. Functional roles of CymA and NapC in reduction of nitrate and nitrite by Shewanella putrefaciens W3-18-1

    Energy Technology Data Exchange (ETDEWEB)

    Beliav, Alex; Qiu, Dongru; Fredrickson, James K.; Wei, Hehong; Nealson, Kenneth H.; Xia, Ming; Zhou, Jizhong; Dai, Jingcheng; Shi, Liang; Tiedje, James M.; Romine, Margaret F.

    2016-06-01

    Shewanella putrefaciens W3-18-1 harbours two periplasmic nitrate reductase (Nap) gene clusters, NapC-associated nap-alpha (napEDABC) and CymA-dependent nap-beta (napDAGHB), for dissimilatory nitrate respiration. CymA is a member of the NapC/NirT quinol dehydrogenase family and acts as a hub to support different respiratory pathways, including those on iron [Fe(III)] and manganese [Mn(III, IV)] (hydr)oxide, nitrate, nitrite, fumarate and arsenate in Shewanella strains. However, in our analysis it was shown that another NapC/NirT family protein, NapC, was only involved in nitrate reduction, although both CymA and NapC can transfer quinol-derived electrons to a periplasmic terminal reductase or an electron acceptor. Furthermore, our results showed that NapC could only interact specifically with the Nap-alpha nitrate reductase while CymA could interact promiscuously with Nap-alpha, Nap-beta and the NrfA nitrite reductase for nitrate and nitrite reduction. To further explore the difference in specificity, site-directed mutagenesis on both CymA and NapC was conducted and the phenotypic changes in nitrate and nitrite reduction were tested. Our analyses demonstrated that the Lys-91 residue played a key role in nitrate reduction for quinol oxidation and the Asp-166 residue might influence the maturation of CymA. The Asp-97 residue might be one of the key factors that influence the interaction of CymA with the cytochromes NapB and NrfA.

  19. Functional roles of CymA and NapC in reduction of nitrate and nitrite by Shewanella putrefaciens W3-18-1.

    Science.gov (United States)

    Wei, Hehong; Dai, Jingcheng; Xia, Ming; Romine, Margaret F; Shi, Liang; Beliav, Alex; Tiedje, James M; Nealson, Kenneth H; Fredrickson, James K; Zhou, Jizhong; Qiu, Dongru

    2016-06-01

    Shewanella putrefaciens W3-18-1 harbours two periplasmic nitrate reductase (Nap) gene clusters, NapC-associated nap-alpha (napEDABC) and CymA-dependent nap-beta (napDAGHB), for dissimilatory nitrate respiration. CymA is a member of the NapC/NirT quinol dehydrogenase family and acts as a hub to support different respiratory pathways, including those on iron [Fe(III)] and manganese [Mn(III, IV)] (hydr)oxide, nitrate, nitrite, fumarate and arsenate in Shewanella strains. However, in our analysis it was shown that another NapC/NirT family protein, NapC, was only involved in nitrate reduction, although both CymA and NapC can transfer quinol-derived electrons to a periplasmic terminal reductase or an electron acceptor. Furthermore, our results showed that NapC could only interact specifically with the Nap-alpha nitrate reductase while CymA could interact promiscuously with Nap-alpha, Nap-beta and the NrfA nitrite reductase for nitrate and nitrite reduction. To further explore the difference in specificity, site-directed mutagenesis on both CymA and NapC was conducted and the phenotypic changes in nitrate and nitrite reduction were tested. Our analyses demonstrated that the Lys-91 residue played a key role in nitrate reduction for quinol oxidation and the Asp-166 residue might influence the maturation of CymA. The Asp-97 residue might be one of the key factors that influence the interaction of CymA with the cytochromes NapB and NrfA.

  20. How to Reform Napping System in China%论午睡在我国的改革

    Institute of Scientific and Technical Information of China (English)

    廖建桥

    2001-01-01

    In this paper, we first point out that when people take napping daily, they get some benefits and losses as well. With the development of China, the losses of napping are overweighing the benefits of napping,therefore,now it is necessary to reform the napping system in China. In the last part of the paper, we give some suggestions on how to reform the napping system in China.%文章首先分析了午睡的有利作用和不利影响,然后指出随着社会的进步,午睡的必要作用在降低,而午睡的弊端却越来越严重,有必要对我国的午睡进行改革。文中最后提出了在我国实行午睡改革的建议。

  1. ADNP/NAP dramatically increase microtubule end-binding protein-Tau interaction: a novel avenue for protection against tauopathy.

    Science.gov (United States)

    Ivashko-Pachima, Y; Sayas, C Laura; Malishkevich, A; Gozes, I

    2017-01-24

    Activity-dependent neuroprotective protein (ADNP), vital for brain formation and cognitive function, is mutated in autism and linked to neurodegenerative/psychiatric diseases. An eight-amino-acid peptide snippet of ADNP, NAP (NAPVSIPQ), identified as a smallest active fragment, includes the SxIP microtubule (MT) end-binding protein (EB) association motif, and enhances ADNP-EB3 interaction. Depletion of EB1 or EB3 abolishes NAP protection against zinc intoxication. Furthermore, NAP enhances Tau-MT interaction, and Tau regulates the localization and function of EB1 and EB3 in developing neuronal cells. Here, we asked how NAP (ADNP) enhances Tau-MT interactions and whether this is mediated by EBs. We showed, for we believe the first time, that NAP augmented endogenous EB1 comet density in the N1E-115 neuroblastoma neuronal model. This finding was substantiated by cell transfection with fluorescent EB1 and live cell imaging. NAP increased comet amounts, length and speed. At the molecular level, NAP enhanced EB3 homodimer formation, while decreasing EB1-EB3 heterodimer content and driving EB1- and EB3-Tau interactions (dramatic 20-fold increases), leading to recruitment of EB1/EB3 and Tau to MTs under zinc intoxication. Our previous results showed that while NAP protected neuronal-like cells against oxidative stress, it did not protect NIH3T3 fibroblasts. Here, NAP did not protect NIH3T3 cells against zinc intoxication, unless these cells were transfected with Tau. Interestingly, other MT associated proteins (MAPs) may replace Tau, thus, EB-Tau (MAPs) interaction is identified as a novel target for endogenous ADNP neuroprotection, and a future target for drug development, with NAP as a prototype.Molecular Psychiatry advance online publication, 24 January 2017; doi:10.1038/mp.2016.255.

  2. Effects of the length and timing of nighttime naps on task performance and physiological function

    Directory of Open Access Journals (Sweden)

    Hidemaro Takeyama

    2004-12-01

    Full Text Available OBJECTIVE: To examine the effects of the length and timing of nighttime naps on performance and physiological functions, an experimental study was carried out under simulated night shift schedules. METHODS: Six students were recruited for this study that was composed of 5 experiments. Each experiment involved 3 consecutive days with one night shift (22:00-8:00 followed by daytime sleep and night sleep. The experiments had 5 conditions in which the length and timing of naps were manipulated: 0:00-1:00 (E60, 0:00-2:00 (E120, 4:00-5:00 (L60, 4:00-6:00 (L120, and no nap (No-nap. During the night shifts, participants underwent performance tests. A questionnaire on subjective fatigue and a critical flicker fusion frequency test were administered after the performance tests. Heart rate variability and rectal temperature were recorded continuously during the experiments. Polysomnography was also recorded during the nap. RESULTS: Sleep latency was shorter and sleep efficiency was higher in the nap in L60 and L120 than that in E60 and E120. Slow wave sleep in the naps in E120 and L120 was longer than that in E60 and L60. The mean reaction time in L60 became longer after the nap, and faster in E60 and E120. Earlier naps serve to counteract the decrement in performance and physiological functions during night shifts. Performance was somewhat improved by taking a 2-hour nap later in the shift, but deteriorated after a one-hour nap. CONCLUSIONS: Naps in the latter half of the night shift were superior to earlier naps in terms of sleep quality. However performance declined after a 1-hour nap taken later in the night shift due to sleep inertia. This study suggests that appropriate timing of a short nap must be carefully considered, such as a 60-min nap during the night shift.OBJETIVO: Para investigar os efeitos da duração e horário de cochilos noturnos sobre o desempenho e as funções fisiológicas foi realizado um estudo experimental por meio do trabalho

  3. The cinema and Walter Benjamin: a discontinuous experience of life Cinema e Walter Benjamin: para uma vivência da descontinuidade

    Directory of Open Access Journals (Sweden)

    Cássio dos Santos Tomaim

    2007-05-01

    Full Text Available This article is an initiative of presenting some elements of Walter Benjamin’s reflections about cinema, and, according to the author, it is an art that give the answers for the modern man perceptive longings, to whom any experience was denied. The cinema, “the work of art in the era of its technical reproduction”, is ultimately for the author the mark of a new perception, of a new relationship between public and the work of art: the collective perception. What the crowd searches is not the contemplation or the withdrawal in front of a work of art, but entertainment. The cinema insists on this characteristic of entertaining when it reproduces the benjaminian concept of “shock experience”, through successive exhibitions of its fragments and constantly interrupting the association of the spectators ideas, (reaffirming the character of amusement of the modern art. However, for the author, the cinema dialectically responds to the amusement as an appropriate instrument for a pedagogy of the crowds – through an emancipated art, the masses would also become emancipated. Keywords: Cine. Walter Benjamin. ‘The shock experience’. Modernity. Este artigo é uma iniciativa de destacar alguns elementos a respeito das reflexões de Walter Benjamin sobre o cinema, uma arte que, segundo o próprio autor, responde aos anseios perceptivos do homem moderno, àquele para o qual foi negada qualquer experiência. O cinema, “a obra de arte na era de sua reprodutibilidade técnica”, por excelência, é, para o autor, o marco de uma nova percepção, de uma nova relação entre público e obra de arte: a percepção coletiva. O que a multidão busca não é a contemplação ou o recolhimento diante da obra de arte, mas a sua distração. Fato que o cinema, ao reproduzir em sua forma o conceito benjaminiano de “experiência do choque”, por meio das sucessivas exposições de seus fragmentos, interrompendo constantemente a associação de id

  4. Mis on "Tänapäeva apokalüpsis"? / Kalmer Saar

    Index Scriptorium Estoniae

    Saar, Kalmer

    2006-01-01

    Francis Ford Coppola suurfilmi "Tänapäeva apokalüpsis" autoriversioon "Apocalypse Now Redux" (Ameerika Ühendriigid 2001/1979) lõpetab USA kultusfilmide festivali kinos "Sõprus". Lisa : Jaan Ruusi "Apocalypse Now Redux" selgitab autoriversiooni - director's cut - mõistet

  5. napäeva muinasjutt : [lühijutud] / Kris, Moor, pseud.

    Index Scriptorium Estoniae

    Kris Moor, pseud.

    2007-01-01

    Sisu: Imagine an actor saying following ; algus ; korralikud tüdrukud ; Provokatsioon ; absoluutselt täiuslik ; sigaret ; best friends ; probleem ; Tere Kris ; kirjutis ; armastus ; Elluastuja ; oeh ; klishee ; happy neverending story ; tungid ja tungisaatused ; noh ; lohe ; the art of noise ; latentsus ; Lühikokkuvõte tänapäeva muinasjutust: (ilma ilukirjandusliku liialduseta)

  6. Structure and immunomodulatory property relationship in NapA of Borrelia burgdorferi.

    Science.gov (United States)

    Codolo, Gaia; Papinutto, Elena; Polenghi, Alessandra; D'Elios, Mario Milco; Zanotti, Giuseppe; de Bernard, Marina

    2010-12-01

    NapA from Borrelia burgdorferi is a member of the Dps-like protein family with specific immunomodulatory properties; in particular, NapA is able to induce the expression of IL-23 in neutrophils and monocytes, as well as the expression of IL-6, IL-1β, and transforming growth factor beta (TGF-β) in monocytes, via Toll-like receptor (TLR) 2. Such an activity on innate immune cells triggers a synovial fluid Th17 response. Here we report the crystal structure of NapA, determined at 2.6Å resolution, which shows that the quaternary structure of the protein is that of a dodecamer with 23 symmetry, typical of the proteins of the family. We also demonstrate that the N- and C-terminal tails, which are flexible and not visible in the crystal, are not relevant for its pro-Th17 activity. Based on the crystal structure and on the comparison with the structure of the orthologous protein from Helicobacter pylori, HP-NAP, we hypothesize that the charge distributions on the two proteins' surfaces are responsible for the interaction with TLR2 and for the different behaviors in modulating the immune response.

  7. Effects of ethanol and NAP on cerebellar expression of the neural cell adhesion molecule L1.

    Directory of Open Access Journals (Sweden)

    Devon M Fitzgerald

    Full Text Available The neural cell adhesion molecule L1 is critical for brain development and plays a role in learning and memory in the adult. Ethanol inhibits L1-mediated cell adhesion and neurite outgrowth in cerebellar granule neurons (CGNs, and these actions might underlie the cerebellar dysmorphology of fetal alcohol spectrum disorders. The peptide NAP potently blocks ethanol inhibition of L1 adhesion and prevents ethanol teratogenesis. We used quantitative RT-PCR and Western blotting of extracts of cerebellar slices, CGNs, and astrocytes from postnatal day 7 (PD7 rats to investigate whether ethanol and NAP act in part by regulating the expression of L1. Treatment of cerebellar slices with 20 mM ethanol, 10(-12 M NAP, or both for 4 hours, 24 hours, and 10 days did not significantly affect L1 mRNA and protein levels. Similar treatment for 4 or 24 hours did not regulate L1 expression in primary cultures of CGNs and astrocytes, the predominant cerebellar cell types. Because ethanol also damages the adult cerebellum, we studied the effects of chronic ethanol exposure in adult rats. One year of binge drinking did not alter L1 gene and protein expression in extracts from whole cerebellum. Thus, ethanol does not alter L1 expression in the developing or adult cerebellum; more likely, ethanol disrupts L1 function by modifying its conformation and signaling. Likewise, NAP antagonizes the actions of ethanol without altering L1 expression.

  8. Centlein mediates an interaction between C-Nap1 and Cep68 to maintain centrosome cohesion.

    Science.gov (United States)

    Fang, Guoliang; Zhang, Dachuan; Yin, Huilong; Zheng, Lu; Bi, Xiaolin; Yuan, Li

    2014-04-15

    Centrosome cohesion, mostly regarded as a proteinaceous linker between parental centrioles, ensures that the interphase centrosome(s) function as a single microtubule-organizing center. Impairment of centrosome cohesion leads to the splitting of centrosomes. Although the list of cohesion proteins is growing, the precise composition and regulation of centrosome cohesion are still largely unknown. In this study, we show that the centriolar protein centlein (also known as CNTLN) localizes to the proximal ends of the centrioles and directly interacts with both C-Nap1 (also known as Cep250) and Cep68. Moreover, centlein complexes with C-Nap1 and Cep68 at the proximal ends of centrioles during interphase and functions as a molecular link between C-Nap1 and Cep68. Depletion of centlein impairs recruitment of Cep68 to the centrosomes and, in turn, results in centrosome splitting. Both centlein and Cep68 are novel Nek2A substrates. Collectively, our data demonstrate that centrosome cohesion is maintained by the newly identified complex of C-Nap1-centlein-Cep68.

  9. Kas kirik peaks tänapäevastuma? / Jaan Lahe

    Index Scriptorium Estoniae

    Lahe, Jaan, 1971-

    2010-01-01

    Autori sõnade kohaselt ei pea kirik olema konservatiivne ega vastandama end muule ühiskonnale, vaid võib olla avatud ka tänapäevasele mõtlemisele ja vaimsusele. Fundamentalismist kui konservatiivsest usukäsitlusest

  10. [Association between insomnia symptoms, daytime napping, and falls in community-dwelling elderly].

    Science.gov (United States)

    Pereira, Alexandre Alves; Ceolim, Maria Filomena; Neri, Anita Liberalesso

    2013-03-01

    This study focused on associations between insomnia symptoms, daytime napping, and falls in community-dwelling elderly, using a population-based cross-sectional design and probability sample with 689 community-dwelling elders. The protocol consisted of self-reported and physical performance variables. The study used univariate and multivariate logistic regression analysis with statistical significance set at p insomnia symptoms and daytime napping were 49.9% (n = 339) and 62.8% (n = 432), respectively. 14.4% reported a single fall and 11.9% reported multiple falls. Falls were associated with female gender (OR = 7.73; 95%CI: 3.03-19.72), age > 80 (OR = 3.48; 95%CI: 1.54-7.85), napping (OR = 2.24; 95%CI: 1.24-4.05), and depressive symptoms (OR = 1.98; 95%CI: 1.11-3.53). The association between daytime napping and falls corroborates data from international research. Identifying modifiable risk factors may help programs to prevent falls in the elderly.

  11. Relationship between napping during night shift work and household obligations of female nursing personnel

    Directory of Open Access Journals (Sweden)

    Silva Costa A

    2013-04-01

    Full Text Available Aline Silva-Costa,1,2 Frida Marina Fischer,1 Rosane Harter Griep,2 Lúcia Rotenberg2 1School of Public Health, University of São Paulo, São Paulo, Brazil; 2Laboratory of Health, Environment and Education, Oswaldo Cruz Institute (Fiocruz, Rio de Janeiro, Brazil Abstract: Night shift employment involves displacing sleep to the daytime. For female workers, the opportunity for daytime sleep is influenced by routine housework demands, which aggravates sleep deprivation. Allowing naps to be taken during the night shift of work is a frequent practice at some hospitals and can help reduce the effects of sleep deprivation. We hypothesize that an association between domestic work and the length of naps during night work exists for nursing professionals. To test this hypothesis, two cross-sectional studies were conducted in two different hospitals. In Study 1, female workers answered questionnaires regarding sleeping habits, professional work, and housework demands. In Study 2, data regarding napping during shifts was obtained by actigraphy, a noninvasive method of monitoring the human sleep–wake cycle. The demand for the performance of housework was measured by (i domestic work hours (total time spent performing domestic work per week, and (ii domestic workload, which considers the degree of sharing domestic tasks and the number of people living at home. The populations from the two studies were subdivided into groups, based on the duration of napping at work. Data on naps were analyzed according to domestic demands, using the Mann–Whitney and Chi-squared tests. Among the two study populations (Studies 1 and 2, those in Study 2 were older, had shorter professional weekly work hours, worked more night shifts, and dedicated more time to housework. Significant associations were only found in Study 2, where greater time napping at work was associated with both greater time spent doing housework and greater domestic workload. The known benefits of

  12. The Effect of Sex and Menstrual Phase on Memory Formation during Nap.

    Science.gov (United States)

    Mednick, Sara C; Sattari, Negin; McDevitt, Elizabeth A; Panas, Dagmara; Niknazar, Mohammad; Ahmadi, Maryam; Naji, Mohsen; Baker, Fiona

    2017-09-16

    Memory formation can be influenced by sleep and sex hormones in both men and women, and by the menstrual cycle in women. Though many studies have shown that sleep benefits the consolidation of memories, it is not clear whether this effect differs between men and women in general or according to menstrual phase in women. The present study investigated the effect of sex and menstrual cycle on memory consolidation of face-name associations (FNA) following a daytime nap. Recognition memory was tested using a face-name paired associates task with a polysomnographic nap between morning and evening testing. Seventeen healthy women (age: 20.75 (1.98) years) were studied at two time points of their menstrual cycles, defined from self-report and separated by 2 weeks (perimenses: -5 days to + 6 days from the start of menses, and non-perimenses: outside of the perimenses phase) and compared with eighteen healthy men (age: 22.01 (2.91) years). Regardless of menstrual phase, women had better pre-nap performance than men. Further, menstrual phase affected post-nap memory consolidation, with women showing greater forgetting in their perimenses phase compared with their non-perimenses phase, and men. Interestingly, post-nap performance correlated with electrophysiological events during sleep (slow oscillations, spindles, and temporal coupling between the two), however, these correlations differed according to menstrual phase and sex. Men's performance improvement was associated with the temporal coupling of spindles and slow oscillations (i.e., spindle/SO coincidence) as well as spindles. Women, however, showed an association with slow oscillations during non-perimenses, whereas when they were in their perimenses phase of their cycle, women appeared to show an association only with sleep spindle events for consolidation. These findings add to the growing literature demonstrating sex and menstrual phase effects on memory formation during sleep. Copyright © 2017. Published by

  13. Napping in older people 'at risk' of dementia: relationships with depression, cognition, medical burden and sleep quality.

    Science.gov (United States)

    Cross, Nathan; Terpening, Zoe; Rogers, Naomi L; Duffy, Shantel L; Hickie, Ian B; Lewis, Simon J G; Naismith, Sharon L

    2015-10-01

    Sleep disturbance is prevalent in older adults, particularly so in those at a greater risk of dementia. However, so far the clinical, medical and neuropsychological correlates of daytime sleep have not been examined. The aims of this study were to investigate the characteristics and effects of napping using actigraphy in older people, particularly in those 'at risk' of dementia. The study used actigraphy and sleep diaries to measure napping habits in 133 older adults 'at risk' of dementia (mean age = 65.5 years, SD = 8.4 years), who also underwent comprehensive medical, psychiatric and neuropsychological assessment. When defined by actigraphy, napping was present in 83.5% (111/133) of participants; however, duration and timing varied significantly among subjects. Nappers had significantly greater medical burden and body mass index, and higher rates of mild cognitive impairment. Longer and more frequent naps were associated with poorer cognitive functioning, as well as higher levels of depressive symptoms, while the timing of naps was associated with poorer nocturnal sleep quality (i.e. sleep latency and wake after sleep onset). This study highlights that in older adults 'at risk' of dementia, napping is associated with underlying neurobiological changes such as depression and cognition. Napping characteristics should be more routinely monitored in older individuals to elucidate their relationship with psychological and cognitive outcomes.

  14. Cloning and characterization of Arabidopsis thaliana AtNAP57--a homologue of yeast pseudouridine synthase Cbf5p.

    Science.gov (United States)

    Maceluch, J; Kmieciak, M; Szweykowska-Kulińska, Z; Jarmołowski, A

    2001-01-01

    Rat Nap57 and its yeast homologue Cbf5p are pseudouridine synthases involved in rRNA biogenesis, localized in the nucleolus. These proteins, together with H/ACA class of snoRNAs compose snoRNP particles, in which snoRNA guides the synthase to direct site-specific pseudouridylation of rRNA. In this paper we present an Arabidopsis thaliana protein that is highly homologous to Cbf5p (72% identity and 85% homology) and NAP57 (67% identity and 81% homology). Moreover, the plant protein has conserved structural motifs that are characteristic features of pseudouridine synthases of the TruB class. We have named the cloned and characterized protein AtNAP57 (Arabidopsis thaliana homologue of NAP57). AtNAP57 is a 565 amino-acid protein and its calculated molecular mass is 63 kDa. The protein is encoded by a single copy gene located on chromosome 3 of the A. thaliana genome. Interestingly, the AtNAP57 gene does not contain any introns. Mutations in the human DKC1 gene encoding dyskerin (human homologue of yeast Cbf5p and rat NAP57) cause dyskeratosis congenita a rare inherited bone marrow failure syndrome characterized by abnormal skin pigmentation, nail dystrophy and mucosal leukoplakia.

  15. A STUDY ON ETHNOMEDICINAL USES OF YARTSHAGUMBA, CORDYCEPS SINENSIS (BERK. SACC. (CORDYCIPITACEAE, BY THE TRIBAL COMMUNITIES OF NORTH SIKKIM AND ITS CONSERVATION

    Directory of Open Access Journals (Sweden)

    Debabrata Maity

    2013-12-01

    Full Text Available Cordyceps sinensis (Berk. Sacc. is commonly known as ‘Caterpillar Fungus’ as it is parasitic on the larvae of different insects of Dipters and Lepidoptera groups. This fungus is of great medicinal value. The whole range of Himalayas, particularly the eastern region is the native place of this taxon. Sikkim, a tiny beautiful state of India also harbours this fungus in some specific high altitude areas (4000-5500 m. The stromatic part develops from the head of the caterpillar having pungent odour even when dried. The ethnic communities of Sikkim, viz. Lapchas, Nepalese, Bhutias, Sherpas etc. use this organism for the remedy of different physical disorders including sexual impotency. It has also some effect on wild animals like Yak. The traditional uses, of this fungus by different tribal communities of North Sikkim including its other medicinal uses and conservation aspects are described.

  16. Identification of Cordyceps sinensis (Berk.) Sacc. And Its Analogues%冬虫夏草及其类似品的鉴别研究

    Institute of Scientific and Technical Information of China (English)

    宋良科

    2003-01-01

    冬虫夏草Cordyceps sinensis(Berk.)Sacc.是一种常用名贵药材,虫草的现代研究成果又促其需求量急剧增大,虫草的三种地方习用品(类似品)作虫草药用已有报道.笔者经过实地调查和查阅大量文献发现类似品有七种之多,其中一种江安虫草从未公开报道,现归纳成文,以便同行们参考和进一步研究.

  17. Benjamin Rush and John Minson Galt, II. Pioneers of bibliotherapy in America.

    Science.gov (United States)

    Weimerskirch, P J

    1965-10-01

    The history of bibliotherapy in America goes back at least to the early part of the nineteenth century. Benjamin Rush was one of the first Americans to recommend the use of bibliotherapy; John Minson Galt, II, was the first American to write an article on the subject. Reading was considered one of the best therapeutic measures in treating mental patients, and by the middle of the nineteenth century every major mental hospital had a patients' library; many were quite extensive. Newspapers and periodicals were supplied in great numbers, and the works of Sir Walter Scott enjoyed great popularity.

  18. Rememoração e citação em Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Georg Otte

    1996-10-01

    Full Text Available Análise de dois conceitos-chave na obra de Walter Benjamin, a rememoração e a citação, e de suas implicações para a relação entre história e texto. A história enquanto texto (narrativa e o texto em sua história. Questionamento dos conceitos da originalidade e da influência, também no contexto do colonialismo.

  19. Draw the lightning down Benjamin Franklin and electrical technology in the age of enlightenment

    CERN Document Server

    Schiffer, Michael Brian; Bell, Carrie L

    2006-01-01

    Most of us know--at least we've heard--that Benjamin Franklin conducted some kind of electrical experiment with a kite. What few of us realize--and what this book makes powerfully clear--is that Franklin played a major role in laying the foundations of modern electrical science and technology. This fast-paced book, rich with historical details and anecdotes, brings to life Franklin, the large international network of scientists and inventors in which he played a key role, and their amazing inventions. We learn what these early electrical devices--from lights and motors to musical and medical i

  20. Solitary and Jacobi elliptic wave solutions of the generalized Benjamin-Bona-Mahony equation

    Science.gov (United States)

    Belobo, Didier Belobo; Das, Tapas

    2017-07-01

    Exact bright, dark, antikink solitary waves and Jacobi elliptic function solutions of the generalized Benjamin-Bona-Mahony equation with arbitrary power-law nonlinearity will be constructed in this work. The method used to carry out the integration is the F-expansion method. Solutions obtained have fractional and integer negative or positive power-law nonlinearities. These solutions have many free parameters such that they may be used to simulate many experimental situations, and to precisely control the dynamics of the system.

  1. Investigation of the maximum amplitude increase from the Benjamin-Feir instability

    CERN Document Server

    Karjanto, N; Peterson, P

    2011-01-01

    The Nonlinear Schr\\"odinger (NLS) equation is used to model surface waves in wave tanks of hydrodynamic laboratories. Analysis of the linearized NLS equation shows that its harmonic solutions with a small amplitude modulation have a tendency to grow exponentially due to the so-called Benjamin-Feir instability. To investigate this growth in detail, we relate the linearized solution of the NLS equation to a fully nonlinear, exact solution, called soliton on finite background. As a result, we find that in the range of instability the maximum amplitude increase is finite and can be at most three times the initial amplitude.

  2. The sons of Caim: the race of outcasts and disinherited in Walter Benjamin and Charles Baudelaire

    Directory of Open Access Journals (Sweden)

    Ricardo André Ferreira Martins

    2014-08-01

    Full Text Available This article aims to develop a reflection essay about the philosophical and literary representation concerning the marginalized and oppressed in history, inside the works of Charles Baudelaire and Walter Benjamin. This is to ascertain and analyze how these two authors, from their respective works, allowed the proletariat gradually took the shape of an object and productive character for social and lyrical reflection, thus, in the wake of works as Flowers of Evil, the assumption of themes drawn from a tradition historically long, connected, in turn, by the recent historiographical perspective from below.

  3. Sinc and solitary wave solutions to the generalized Benjamin-Bona-Mahony-Burgers equations

    Energy Technology Data Exchange (ETDEWEB)

    Alqruan, Marwan; Al-Khaled, Kamel, E-mail: marwan04@just.edu.jo, E-mail: kamel@just.edu.jo [Department of Mathematics and Statistics, Jordan University of Science and Technology, Irbid 22110 (Jordan)

    2011-06-01

    In this paper, we consider the generalized Benjamin-Bona-Mahony-Burgers (BBMB) equations. A variety of exact solutions to the BBMB equations are developed by means of the tanh method. A sinc-Galerkin procedure is also developed to solve the BBMB equations. Sinc approximations to both the derivatives and the indefinite integrals reduce the system to an explicit system of algebraic equations. It is shown that sinc-Galerkin approximations produce an error of exponential order. A comparison of the two methods for solving the BBMB equation was made regarding their solutions. The study outlines the features of the sinc method.

  4. Walter Benjamin y los pasajes de París: el abordaje metodológico

    OpenAIRE

    Daniel Hiernaux-Nicolas

    1999-01-01

    Walter Benjamin (1892-1940) ha sido uno de los investigadores más creativos de su generación, además de lo difícil que resulta ubicarlo en una línea, debido a la vastedad, intensidad y variedad de una obra que sólo llegó entera al público gracias a la recopilación de las Gesammelte Schriften, realizada por Rolf Tiedemann durante los años sesenta y setenta. Si bien en la actualidad existe una moda benjaminiana, falta mucho por analizar, entre otros aspectos, lo referente a los textos o citas d...

  5. Brecht e Benjamin: peça de aprendizagem e ordenamento experimental

    Directory of Open Access Journals (Sweden)

    Jeanne-Marie Gagnebin

    2012-09-01

    Full Text Available A partir de uma breve definição das condições de possibilidade do “Lehrstück” (peça de aprendizagem brechtiano, são apresentados os conceitos de exercício (“Übung”, de ordenamento experimental (“Versuchsanordnung” e de espaço de jogo (“Spielraum” na teoria do teatro épico de Walter Benjamin, conceitos essenciais para sua tentativa de reformulação de uma estética materialista contemporânea.

  6. La Bella Durmiente y el motivo del despertar de la juventud en el Walter Benjamin temprano

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    Mariela Silvana Vargas

    2016-11-01

    Full Text Available El objetivo de este artículo es analizar la imagen del despertar como ‘despertar de la juventud’ en La Bella Durmiente (1911, el primer texto teórico de Benjamin y mostrar que esta figura no está exenta de una profunda ambigüedad y de contradicciones propias de su ‘metafísica de la juventud’. La juventud, como el sujeto capaz de llevar a cabo transformaciones sociales radicales debe ser, como la Bella Durmiente, despertada por otro. Esta paradójica pasividad marcaría el destino del Jugendbewegung.

  7. Improved decay rates for solutions for a multidimensional generalized Benjamin-Bona-Mahony equation

    KAUST Repository

    Said-Houari, Belkacem

    2014-01-01

    In this paper, we study the decay rates of solutions for the generalized Benjamin-Bona-Mahony equation in multi-dimensional space. For initial data in some L1-weighted spaces, we prove faster decay rates of the solutions. More precisely, using the Fourier transform and the energy method, we show the global existence and the convergence rates of the solutions under the smallness assumption on the initial data and we give better decay rates of the solutions. This result improves early works in J. Differential Equations 158(2) (1999), 314-340 and Nonlinear Anal. 75(7) (2012), 3385-3392. © 2014-IOS Press.

  8. The scattering transform for the Benjamin-Ono equation in the small-dispersion limit

    Science.gov (United States)

    Miller, Peter D.; Wetzel, Alfredo N.

    2016-10-01

    Using exact formulae for the scattering data of the Benjamin-Ono equation valid for general rational potentials recently obtained in Miller and Wetzel [17], we rigorously analyze the scattering data in the small-dispersion limit. In particular, we deduce precise asymptotic formulae for the reflection coefficient, the location of the eigenvalues and their density, and the asymptotic dependence of the phase constant (associated with each eigenvalue) on the eigenvalue itself. Our results give direct confirmation of conjectures in the literature that have been partly justified by means of inverse scattering, and they also provide new details not previously reported in the literature.

  9. Walter Benjamin and the Methodology of Anthropological Materialism: Striking Dialectical Sparks from Ernst Thälmann’s Bronze Head

    Directory of Open Access Journals (Sweden)

    Joanna Kusiak

    2013-01-01

    Full Text Available In his methodology as well as his political thought Benjamin remainsfaithful to the principle to proceed “always radically, never consistently”. Therefore,the greatest challenge for a contemporary city researcher inspired by Benjamin is tooperationalise his materialist methodology. Benjamin’s anthropological materialismcannot be reached within the fixed limits of any discipline, but rather places itself“on the crossroads of magic and positivism” (Adorno; the dialectical image is nota tool of his methodology but its culminating point where positivism turns to magic.To reach this point, Benjamin conducts perceptive and analytical experiments thatcan be treated as dialectical études, exercises in seeing. The paper examines some ofthese techniques, exploring their philosophical context and testing them on a contemporaryexample: the Ernst-Thälmann-Monument in Berlin.

  10. Fases da história da fotografia e a questão da aura, segundo Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Orlando José Ribeiro de Oliveira

    2014-07-01

    Full Text Available Este artigo aborda as fases da história da fotografia propostas por Walter Benjamin, no ensaio Pequena História da Fotografia, e discute as transformações que atingiram a obra de arte na modernidade, à luz do conceito de aura. A periodização estabelecida por Benjamin - apogeu, declínio, revitalização - é ilustrada com trabalhos dos fotógrafos referidos pelo autor no texto em que visa à “compreensão real da essência da arte fotográfica”.

  11. Variación patogénica y fuentes de resistencia a Colletotrichum lindemuthianum Sacc & magn Scrib., patógeno de la antracnosis del frijol, en Colombia Variación patogénica y fuentes de resistencia a Colletotrichum lindemuthianum (Sacc & Magn Scrib., patógeno de la antracnosis del fríjol, en Colombia

    Directory of Open Access Journals (Sweden)

    Cobo S. Felipe

    1987-03-01

    Full Text Available Pathogenic variation studies with colombian isolates of Colletotrichum lindemuthianum (Sacc & Magn Scrib., the anthracnose bean pathogen, were conducted under laboratory and greenhouse conditions at CIAT, Colombia. In addition, bean germplam with cormercial grain color was evaluated with the objective of identifying resistant varieties and sources of resistance to the existing variation. To this purpose, 17 isolates of C. lindemuthianum collected at the principal Colombian bean zones, were inoculated on 21 American and European differential bean varieties.En los laboratorios e invernaderos del programa de fitopatología de fríjol del CIAT, se estudió la variación patogénica de aislamientos colombianos de Colletotrichum lindemuthianum (Sacc& Magn Scrib. También se evaluó germoplasma de frijol con grano de color comercial con el objetivo de identificar líneas resistentes y fuentes de resistencia a la variación existente. Para este fin, 17 aislamientos de C.lindemuthianum, colectados en las principales zonas frijoleras colombianas se inocularon sobre 21 variedades diferenciales.

  12. Youth and pedagogy (On the genesis of the thought of Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Lluís BALLESTER BRAGE

    2012-02-01

    Full Text Available The authors analyze the 16 early writings that W. Benjamin wrote between the ages of 19 and 23, all of which relate to educative matters, and where the decisive influence of G. Wyneken is shown. The issues that the young Walter Benjamin addresses are also studied, such as idealism and youth culture, the necessity of reform in schools and universities and also in moral, aesthetic and religious education as well as in juvenile sexuality. However, the most important thing is that in these works one can find the constants that characterize the rest of his production, such as his individualism, his obsession with his own childhood experiences, his contradictions and thematic transitions, his interest in aesthetics and art, the complexity of his work, his agnosticism and his consideration of Judaism as a cultural element, and above all his critical sense and his vocation for criticism which starts to become evident. Somehow in these articles of educative content one can discover many of the constants of what will be the subsequent work of this author.

  13. Para un concepto de no lineal de Historia. Reflexiones a partir de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Stefan Gandler

    2011-04-01

    Full Text Available O ponto de partida deste estudo é o mais recente texto de Walter Benjamin, sua tese "Sobre o conceito de história". Benjamin apela para a importância da teologia para o materialismo histórico, com a intenção de superar uma das razões decisivas porque o projeto único da teoria de Marx, em suas interpretações positivistas, não foi entendido com a necessária radicalidade e estava em risco de perder seu poder explicativo e seu impulso revolucionário. A necessidade de olhar para trás, em direção ao que chamamos de passado, é o foco do estudo, e é analisada no nível epistemológico, ontológico e político. O olhar para trás também é necessário porque o passado mostra como todas as atrocidades, que pensamos ter superado, podem voltar a qualquer momento em uma maneira que não podemos imaginar.

  14. Dispersive shock waves in the Kadomtsev-Petviashvili and two dimensional Benjamin-Ono equations

    Science.gov (United States)

    Ablowitz, Mark J.; Demirci, Ali; Ma, Yi-Ping

    2016-10-01

    Dispersive shock waves (DSWs) in the Kadomtsev-Petviashvili (KP) equation and two dimensional Benjamin-Ono (2DBO) equation are considered using step like initial data along a parabolic front. Employing a parabolic similarity reduction exactly reduces the study of such DSWs in two space one time (2 + 1) dimensions to finding DSW solutions of (1 + 1) dimensional equations. With this ansatz, the KP and 2DBO equations can be exactly reduced to the cylindrical Korteweg-de Vries (cKdV) and cylindrical Benjamin-Ono (cBO) equations, respectively. Whitham modulation equations which describe DSW evolution in the cKdV and cBO equations are derived and Riemann type variables are introduced. DSWs obtained from the numerical solutions of the corresponding Whitham systems and direct numerical simulations of the cKdV and cBO equations are compared with very good agreement obtained. In turn, DSWs obtained from direct numerical simulations of the KP and 2DBO equations are compared with the cKdV and cBO equations, again with good agreement. It is concluded that the (2 + 1) DSW behavior along self similar parabolic fronts can be effectively described by the DSW solutions of the reduced (1 + 1) dimensional equations.

  15. DESPERTAR DEL SUEÑO: WALTER BENJAMIN Y EL PROBLEMA DEL SHOCK

    Directory of Open Access Journals (Sweden)

    Guido Vespucci

    2010-01-01

    Full Text Available El presente artículo pretende analizar la noción de shock como una puerta de acceso a la obra de Walter Benjamin. A través de la exploración de algunos de sus escritos más originales (tales como «La obra de arte en la época de su reproductibilidad técnica», las «Tesis de filosofía de la historia», el Libro de los Pasajes, entre otros y sobre la base de una selección de ensayos acerca de su obra, intentaremos capturar la productividad analítica del concepto con el fin de poder iluminar su función operativa (filosófica y política, en el tratamiento que Benjamin realiza sobre una variedad de temas como el arte, la cultura, el capitalismo, la reproducción técnica y la experiencia del sujeto moderno.

  16. Slow wave sleep during a daytime nap is necessary for protection from subsequent interference and long-term retention.

    Science.gov (United States)

    Alger, Sara E; Lau, Hiuyan; Fishbein, William

    2012-09-01

    While it is now generally accepted that sleep facilitates the processing of newly acquired declarative information, questions still remain as to the type and length of sleep necessary to best benefit declarative memories. A better understanding could lend support in one direction or another as to the much-debated role of sleep, be it passive, permissive, or active, in memory processing. The present study employed a napping paradigm and compared performance on a bimodal paired-associates task of those who obtained a 10-min nap, containing only Stages 1 and 2 sleep, to those whose nap contained slow-wave sleep (SWS) and rapid eye movement (REM) sleep (60-min nap), as well as to subjects who remained awake. Measurements were obtained for baseline performance at training, after a sleep/no sleep interval for short-term retention, after a subsequent stimulus-related interference task, and again after a weeklong retention period. While all groups learned the information similarly, both nap groups performed better than the Wake group when examining short-term retention, approximately 1.5h after training (10-min p=.052, 60-min p=.002). However, performance benefits seen in the 10-min nap group proved to be temporary. Performance after a stimulus-related interference task revealed significantly better memory retention in the 60-min nap group, with interference disrupting the memory trace far less than both the Wake and 10-min nap groups (pconsolidation of learned bimodal paired-associates, supported by theories such as the Standard Theory of Consolidation as well as the Synaptic Homeostasis Hypothesis.

  17. Fatigue mitigation effects of en-route napping on commercial airline pilots flying international routes

    Science.gov (United States)

    Baldwin, Jarret Taylor

    The introduction of ultra-long range commercial aircraft and the evolution of the commercial airline industry has provided new opportunities for air carriers to fly longer range international route segments while deregulation, industry consolidation, and the constant drive to reduce costs wherever possible has pressured airline managements to seek more productivity from their pilots. At the same time, advancements in the understanding of human physiology have begun to make their way into flight and duty time regulations and airline scheduling practices. In this complex and ever changing operating environment, there remains an essential need to better understand how these developments, and other daily realities facing commercial airline pilots, are affecting their fatigue management strategies as they go about their rituals of getting to and from their homes to work and performing their flight assignments. Indeed, the need for commercial airline pilots to have access to better and more effective fatigue mitigation tools to combat fatigue and insure that they are well rested and at the top of their game when flying long-range international route segments has never been greater. This study examined to what extent the maximum fatigue states prior to napping, as self-accessed by commercial airline pilots flying international route segments, were affected by a number of other common flight assignment related factors. The study also examined to what extent the availability of scheduled en-route rest opportunities, in an onboard crew rest facility, affected the usage of en-route napping as a fatigue mitigation strategy, and to what extent the duration of such naps affected the perceived benefits of such naps as self-accessed by commercial airline pilots flying international route segments. The study utilized an online survey tool to collect data on crew position, prior flight segments flown in the same duty period, augmentation, commuting, pre-flight rest obtained in the

  18. Nap1: taking a closer look at a juggler protein of extraordinary skills.

    Science.gov (United States)

    Zlatanova, Jordanka; Seebart, Corrine; Tomschik, Miroslav

    2007-05-01

    The nucleosome assembly protein Nap1 is used extensively in the chromatin field to reconstitute nucleosomal templates for structural and functional studies. Beyond its role in facilitating experimental investigation of nucleosomes, the highly conserved Nap1 is one of the best-studied members of the histone chaperone group. Here we review its numerous functions, focusing mainly on its roles in assembly and disassembly of the nucleosome particle, and its interactions with chromatin remodeling factors. Its presumed role in transcription through chromatin is also reviewed in detail. An attempt is made to clearly discriminate between fact and fiction, and to formulate the unresolved questions that need further attention. It is beyond doubt that the numerous, seemingly unrelated functions of this juggler protein have to be precisely channeled, coordinated, and regulated. Why nature endowed this specific protein with so many functions may remain a mystery. We are aware of the enormous challenge to the scientific community that understanding the mechanisms underlying these activities presents.

  19. Illustratsioon eesti tänapäevases täiskasvanute ilukirjanduses / Martin Tõnts

    Index Scriptorium Estoniae

    Tõnts, Martin

    2010-01-01

    Uuritakse illustratsiooni funktsioone tänapäevases eesti ilukirjanduses, kas ja kuidas on need seotud tekstiga, on sellest inspireeritud või ei, kuivõrd annavad edasi tekstis peituvat või iseseisvat informatsiooni või on pelgalt kaunistavad, nagu peamiselt luulekogudes esinevad illustratsioonid. Praktilise tööna on Birk Rohelennu "Alexander ja Belle" raamatu kujundus, küljendus ja illustratsioonid

  20. Delayed onset of a daytime nap facilitates retention of declarative memory.

    Directory of Open Access Journals (Sweden)

    Sara E Alger

    Full Text Available BACKGROUND: Learning followed by a period of sleep, even as little as a nap, promotes memory consolidation. It is now generally recognized that sleep facilitates the stabilization of information acquired prior to sleep. However, the temporal nature of the effect of sleep on retention of declarative memory is yet to be understood. We examined the impact of a delayed nap onset on the recognition of neutral pictorial stimuli with an added spatial component. METHODOLOGY/PRINCIPAL FINDINGS: Participants completed an initial study session involving 150 neutral pictures of people, places, and objects. Immediately following the picture presentation, participants were asked to make recognition judgments on a subset of "old", previously seen, pictures versus intermixed "new" pictures. Participants were then divided into one of four groups who either took a 90-minute nap immediately, 2 hours, or 4 hours after learning, or remained awake for the duration of the experiment. 6 hours after initial learning, participants were again tested on the remaining "old" pictures, with "new" pictures intermixed. CONCLUSIONS/SIGNIFICANCE: Interestingly, we found a stabilizing benefit of sleep on the memory trace reflected as a significant negative correlation between the average time elapsed before napping and decline in performance from test to retest (p = .001. We found a significant interaction between the groups and their performance from test to retest (p = .010, with the 4-hour delay group performing significantly better than both those who slept immediately and those who remained awake (p = .044, p = .010, respectively. Analysis of sleep data revealed a significant positive correlation between amount of slow wave sleep (SWS achieved and length of the delay before sleep onset (p = .048. The findings add to the understanding of memory processing in humans, suggesting that factors such as waking processing and homeostatic increases in need for sleep over time modulate

  1. Erotic subset for the Nencki Affective Picture System (NAPS ERO: cross-sexual comparison study

    Directory of Open Access Journals (Sweden)

    Małgorzata eWierzba

    2015-09-01

    Full Text Available Research on the processing of sexual stimuli has proved that such material has high priority in human cognition. Yet, although sex differences in response to sexual stimuli were extensively discussed in the literature, sexual orientation was given relatively little consideration, and material suitable for relevant research is difficult to come by. With this in mind, we present a collection of 200 erotic images, accompanied by their self-report ratings of emotional valence and arousal by homo- and heterosexual males and females (n = 80, divided into four equal-sized subsamples. The collection complements the Nencki Affective Picture System (NAPS and is intended to be used as stimulus material in experimental research. The erotic images are divided into five categories, depending on their content: opposite-sex couple (50, male couple (50, female couple (50, male (25 and female (25. Additional 100 control images from the NAPS depicting people in a non-erotic context were also used in the study. We showed that recipient sex and sexual orientation strongly influenced the evaluation of erotic content. Thus, comparisons of valence and arousal ratings in different subject groups will help researchers select stimuli set for the purpose of various experimental designs. To facilitate the use of the dataset, we provide an on-line tool, which allows the user to browse the images interactively and select proper stimuli on the basis of several parameters. The NAPS ERO image collection together with the data are available to the scientific community for non-commercial use at http://naps.nencki.gov.pl.

  2. Erotic subset for the Nencki Affective Picture System (NAPS ERO): cross-sexual comparison study.

    Science.gov (United States)

    Wierzba, Małgorzata; Riegel, Monika; Pucz, Anna; Leśniewska, Zuzanna; Dragan, Wojciech Ł; Gola, Mateusz; Jednoróg, Katarzyna; Marchewka, Artur

    2015-01-01

    Research on the processing of sexual stimuli has proved that such material has high priority in human cognition. Yet, although sex differences in response to sexual stimuli were extensively discussed in the literature, sexual orientation was given relatively little consideration, and material suitable for relevant research is difficult to come by. With this in mind, we present a collection of 200 erotic images, accompanied by their self-report ratings of emotional valence and arousal by homo- and heterosexual males and females (n = 80, divided into four equal-sized subsamples). The collection complements the Nencki Affective Picture System (NAPS) and is intended to be used as stimulus material in experimental research. The erotic images are divided into five categories, depending on their content: opposite-sex couple (50), male couple (50), female couple (50), male (25) and female (25). Additional 100 control images from the NAPS depicting people in a non-erotic context were also used in the study. We showed that recipient sex and sexual orientation strongly influenced the evaluation of erotic content. Thus, comparisons of valence and arousal ratings in different subject groups will help researchers select stimuli set for the purpose of various experimental designs. To facilitate the use of the dataset, we provide an on-line tool, which allows the user to browse the images interactively and select proper stimuli on the basis of several parameters. The NAPS ERO image collection together with the data are available to the scientific community for non-commercial use at http://naps.nencki.gov.pl.

  3. Illustratsioon eesti tänapäevases täiskasvanute ilukirjanduses / Martin Tõnts

    Index Scriptorium Estoniae

    Tõnts, Martin

    2010-01-01

    Uuritakse illustratsiooni funktsioone tänapäevases eesti ilukirjanduses, kas ja kuidas on need seotud tekstiga, on sellest inspireeritud või ei, kuivõrd annavad edasi tekstis peituvat või iseseisvat informatsiooni või on pelgalt kaunistavad, nagu peamiselt luulekogudes esinevad illustratsioonid. Praktilise tööna on Birk Rohelennu "Alexander ja Belle" raamatu kujundus, küljendus ja illustratsioonid

  4. napäeva tava- ja erikooli noormeeste lemmikriided ning lemmikasjad / Kristi Kõiv

    Index Scriptorium Estoniae

    Kõiv, Kristi

    2001-01-01

    Tavakoolide 10-18-aastaste õpilaste ja Puiatu Erikooli 10-17-aastaste õpilaste seas läbi viidud uuringust, mille eesmärgiks oli välja selgitada riiete ja asjade sotsiaalpsühholoogiline tähendus, missugused riided ja esemed ning miks saavad erilise tähenduse tarbimiseelistusena tänapäeva käitumishälvikutega erikooli õpilastel võrrelduna tavakooli õpilastega

  5. NapA protects Helicobacter pylori from oxidative stress damage, and its production is influenced by the ferric uptake regulator.

    Science.gov (United States)

    Cooksley, Clare; Jenks, Peter J; Green, Andrew; Cockayne, Alan; Logan, Robert P H; Hardie, Kim R

    2003-06-01

    The Helicobacter pylori protein NapA has been identified as a homologue of the Escherichia coli protein Dps. It is shown in this study that, like Dps, NapA is produced maximally in stationary phase cells and contributes to the ability of H. pylori to survive under oxidative stress conditions. Moreover, NapA co-localizes with the nuclear material, suggesting that it can interact with DNA in vivo. Furthermore, it is demonstrated that repression of NapA production by iron starvation was not so pronounced in a H. pylori fur mutant, suggesting that the ferric uptake regulator (Fur) is involved in napA regulation, and a potential fur box by which this control could be mediated is identified. This finding is consistent with the regulation of iron-binding proteins by Fur and also the modulation of Fur during oxidative stress, thus allowing NapA levels to be increased in the environmental conditions under which its ability to protect DNA from attack by toxic free radicals is most beneficial to the cell.

  6. Removal of Ca2+ and Zn2+ from aqueous solutions by zeolites NaP and KP.

    Science.gov (United States)

    Yusof, Alias Mohd; Malek, Nik Ahmad Nizam Nik; Kamaruzaman, Nurul Asyikin; Adil, Muhammad

    2010-01-01

    Zeolites P in sodium (NaP) and potassium (KP) forms were used as adsorbents for the removal of calcium (Ca2+) and zinc (Zn2+) cations from aqueous solutions. Zeolite KP was prepared by ion exchange of K+ with Na+ which neutralizes the negative charge of the zeolite P framework structure. The ion exchange capacity of K+ on zeolite NaP was determined through the Freundlich isotherm equilibrium study. Characterization of zeolite KP was determined using infrared spectroscopy and X-ray diffraction (XRD) techniques. From the characterization, the structure of zeolite KP was found to remain stable after the ion exchange process. Zeolites KP and NaP were used for the removal of Ca and Zn from solution. The amount of Ca2+ and Zn2+ in aqueous solution before and after the adsorption by zeolites was analysed using the flame atomic absorption spectroscopy method. The removal of Ca2+ and Zn2+ followed the Freundlich isotherm rather than the Langmuir isotherm model. This result also revealed that zeolite KP adsorbs Ca2+ and Zn2+ more than zeolite NaP and proved that modification of zeolite NaP with potassium leads to an increase in the adsorption efficiency of the zeolite. Therefore, the zeolites NaP and KP can be used for water softening (Ca removal) and reducing water pollution/toxicity (Zn removal).

  7. Recovery of subsampled dimensions and configurations derived from napping data by MFA and MDS.

    Science.gov (United States)

    Nestrud, Michael A; Lawless, Harry T

    2011-05-01

    Napping is a multivariate sensory method in which participants physically place stimuli on a large sheet of paper and orient them so that the distance between pairs represents a measure of dissimilarity. The two-dimensional nature of the task may be a limitation to the ability of this and similar methodologies to recover information about complex stimuli. In the first investigation, eight simulated three-dimensional stimuli were created with two different levels for each attribute. Simulated napping experiments had groups of participants attend to two of the dimensions with different probabilities. Multiple factor analysis (an analytical multivariate statistical procedure that can be thought of as a principle components analysis on the individuals) and MDS-INDSCAL (a variation on multidimensional scaling that finds a common configuration through reducing a stress measure associated with lack of fit) recovered full dimensionality from these data, although MFA had trouble when attention was the most unbalanced. In the second experiment, a human napping experiment was designed using custom three-dimensional stimuli: shapes with two levels each of size, color, and shape attributes. This experiment confirmed the results of Experiment 1, as both MDS-INDSCAL and MFA analyses again recovered the full dimensionality of the stimuli.

  8. Napping to renew learning capacity: enhanced encoding after stimulation of sleep slow oscillations.

    Science.gov (United States)

    Antonenko, Daria; Diekelmann, Susanne; Olsen, Cathrin; Born, Jan; Mölle, Matthias

    2013-04-01

    As well as consolidating memory, sleep has been proposed to serve a second important function for memory, i.e. to free capacities for the learning of new information during succeeding wakefulness. The slow wave activity (SWA) that is a hallmark of slow wave sleep could be involved in both functions. Here, we aimed to demonstrate a causative role for SWA in enhancing the capacity for encoding of information during subsequent wakefulness, using transcranial slow oscillation stimulation (tSOS) oscillating at 0.75 Hz to induce SWA in healthy humans during an afternoon nap. Encoding following the nap was tested for hippocampus-dependent declarative materials (pictures, word pairs, and word lists) and procedural skills (finger sequence tapping). As compared with a sham stimulation control condition, tSOS during the nap enhanced SWA and significantly improved subsequent encoding on all three declarative tasks (picture recognition, cued recall of word pairs, and free recall of word lists), whereas procedural finger sequence tapping skill was not affected. Our results indicate that sleep SWA enhances the capacity for encoding of declarative materials, possibly by down-scaling hippocampal synaptic networks that were potentiated towards saturation during the preceding period of wakefulness.

  9. Silencing of the SlNAP7 gene influences plastid development and lycopene accumulation in tomato

    Science.gov (United States)

    Fu, Da-Qi; Meng, Lan-Huan; Zhu, Ben-Zhong; Zhu, Hong-Liang; Yan, Hua-Xue; Luo, Yun-Bo

    2016-12-01

    Ripening is an important stage of fruit development. To screen the genes associated with pigment formation in tomato fruit, a suppression subtractive hybridization (SSH) cDNA library was constructed by using tomato fruit in the green ripe and break ripe stages, and 129 differential genes were obtained. Using redness as a screening marker, virus-induced gene silencing (VIGS) of the differential genes was performed with a sprout vacuum-infiltration system (SVI). The results showed that silencing the SlNAP7 gene affected the chloroplast development of tomato leaves, manifesting as a photo-bleaching phenotype, and silenced fruit significantly affected the accumulation of lycopene, manifested as a yellow phenotype. In our study, we found that silencing the SlNAP7 gene downregulates the expression of the POR and PORA genes and destroys the normal development of the chloroplast. The expression of related genes included in the lycopene biosynthesis pathway was not significantly changed, but lycopene accumulation was significantly reduced in tomato fruit. Perhaps it was caused by the destruction of the chromoplast, which leads to the oxidation of lycopene. The results show that the SlNAP7 gene influences chloroplast development and lycopene accumulation in tomato.

  10. The differential effects of emotional salience on direct associative and relational memory during a nap.

    Science.gov (United States)

    Alger, Sara E; Payne, Jessica D

    2016-12-01

    Relational memories are formed from shared components between directly learned memory associations, flexibly linking learned information to better inform future judgments. Sleep has been found to facilitate both direct associative and relational memories. However, the impact of incorporating emotionally salient information into learned material and the interaction of emotional salience and sleep in facilitating both types of memory is unknown. Participants encoded two sets of picture pairs, with either emotionally negative or neutral objects paired with neutral faces. The same objects were present in both sets, paired with two different faces across the sets. Baseline memory for these directly paired associates was tested immediately after encoding, followed by either a 90-min nap opportunity or wakefulness. Five hours after learning, a surprise test assessed relational memory, the indirect association between two faces paired with the same object during encoding, followed by a retest of direct associative memory. Overall, negative information was remembered better than neutral for directly learned pairs. A nap facilitated both preservation of direct associative memories and formation of relational memories, compared to remaining awake. Interestingly, however, this sleep benefit was observed specifically for neutral directly paired associates, while both neutral and negative relational associations benefitted from a nap. Finally, REM sleep played opposing roles in neutral direct and relational associative memory formation, with more REM sleep leading to forgetting of direct associations but promoting relational associations, suggesting that, while not benefitting memory consolidation for directly learned details, REM sleep may foster the memory reorganization needed for relational memory.

  11. Creating the Connected Institution: Toward Realizing Benjamin Franklin and Ernest Boyer's Revolutionary Vision for American Higher Education

    Science.gov (United States)

    Harkavy, Ira

    2015-01-01

    In this article, Ira Harkavy points to the beliefs that education and schooling significantly determine the character of a society, and that higher education has broad societal impacts, including helping to shape the rest of the schooling system. It is this core idea that unites the work of Benjamin Franklin and Ernest Boyer and serves as the…

  12. Final Report of the Evaluation of the Benjamin Franklin Urban League Street Academy, ESEA Title I 1969-1970.

    Science.gov (United States)

    Teaching and Learning Research Corp., New York, NY.

    The purpose of the Benjamin Franklin Urban League Street Academy Program is to help students stay in school, help dropouts to return to school, or help students enter the job market. The program was evaluated in three categories: East Side Cluster Service, summer enrichment, and educational programs. The major evaluation objectives were to…

  13. Final Report of the Evaluation of the 1970-71 Benjamin Franklin Urban League Street Academy. ESEA Title I.

    Science.gov (United States)

    Erickson, Edsel; Wortham, James

    The objective of the Benjamin Franklin Urban League Street Academy, funded under Title I of the Elementary Secondary Education Act of 1965, is to help students to stay in school or to help dropouts to return to school, or enter the world of work prepared and motivated to adjust and achieve satisfactorily. The major evaluation objectives of this…

  14. Memória e história: Hannah Arendt em diálogo com Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Magalhães, Marionilde Brepohl de

    2006-01-01

    Full Text Available A autora tem como proposta refletir sobre o papel da memória e da História em nossa cultura contemporânea, através de uma aproximação ao pensamento de Hannah Arendt e Walter Benjamin

  15. A poética da tradução em Walter Benjamin e Haroldo de Campos

    Directory of Open Access Journals (Sweden)

    Luciene Guimarães de Oliveira

    2005-04-01

    Full Text Available Este ensaio visa traçar um paralelo entre a poética da tradução de Walter Benjamin, em “A Tarefa do Tradutor”, e a de Haroldo de Campos, poeta, tradutor, e crítico brasileiro em sua teoria da tradução.

  16. 78 FR 42036 - Radio Broadcasting Services; Port Lions, AK, De Beque, CO, Benjamin, Cisco, Rule, and Shamrock, TX

    Science.gov (United States)

    2013-07-15

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 Radio Broadcasting Services; Port Lions, AK, De Beque, CO, Benjamin, Cisco, Rule... 237C3; Cisco, Channel 261C3; Rule, Channel 288C2; and Shamrock, Channel 225C2. BILLING CODE 6712-01-P...

  17. The histone chaperone protein Nucleosome Assembly Protein-1 (hNAP-1 binds HIV-1 Tat and promotes viral transcription

    Directory of Open Access Journals (Sweden)

    Marcello Alessandro

    2008-01-01

    Full Text Available Abstract Background Despite the large amount of data available on the molecular mechanisms that regulate HIV-1 transcription, crucial information is still lacking about the interplay between chromatin conformation and the events that regulate initiation and elongation of viral transcription. During transcriptional activation, histone acetyltransferases and ATP-dependent chromatin remodeling complexes cooperate with histone chaperones in altering chromatin structure. In particular, human Nucleosome Assembly Protein-1 (hNAP-1 is known to act as a histone chaperone that shuttles histones H2A/H2B into the nucleus, assembles nucleosomes and promotes chromatin fluidity, thereby affecting transcription of several cellular genes. Results Using a proteomic screening, we identified hNAP-1 as a novel cellular protein interacting with HIV-1 Tat. We observed that Tat specifically binds hNAP1, but not other members of the same family of factors. Binding between the two proteins required the integrity of the basic domain of Tat and of two separable domains of hNAP-1 (aa 162–290 and 290–391. Overexpression of hNAP-1 significantly enhanced Tat-mediated activation of the LTR. Conversely, silencing of the protein decreased viral promoter activity. To explore the effects of hNAP-1 on viral infection, a reporter HIV-1 virus was used to infect cells in which hNAP-1 had been either overexpressed or knocked-down. Consistent with the gene expression results, these two treatments were found to increase and inhibit viral infection, respectively. Finally, we also observed that the overexpression of p300, a known co-activator of both Tat and hNAP-1, enhanced hNAP-1-mediated transcriptional activation as well as its interaction with Tat. Conclusion Our study reveals that HIV-1 Tat binds the histone chaperone hNAP-1 both in vitro and in vivo and shows that this interaction participates in the regulation of Tat-mediated activation of viral gene expression.

  18. Benjamin Franklin, electricity, and the palsies: on the 300th anniversary of his birth.

    Science.gov (United States)

    Finger, Stanley

    2006-05-23

    Benjamin Franklin was involved not only with the nature of electricity but with its possible medical utility. He conducted electrical experiments on people with palsies, notably those caused by stroke, to see if electricity from machines could restore movement. Franklin recognized that electricity was not the miraculous cure it was hoped to be, and he presented his findings in 1757 as communication to the Royal Society. Although he did not provide names or individual case studies in this communication, subsequently published in 1758, his personal letters reveal that he treated at least two important colonists: James Logan, William Penn's secretary and a prominent public official in Pennsylvania, and Jonathan Belcher, governor of several provinces. Franklin's private letters shed light on how he conducted his clinical "tryals" and why he drew the conclusions he did in his report to the Royal Society.

  19. African American students' reactions to Benjamin Cooke's "Nonverbal Communication Among Afro-Americans: An Initial Classification".

    Science.gov (United States)

    Greene, Deric M; Stewart, Felicia R

    2011-01-01

    The nonverbal communication behavior of Black people continues to take new forms as time progresses. In Kochman's 1972 book, Rappin' and Stylin' Out: Communication in Urban Black America, Benjamin Cooke introduced an initial classification and code of nonverbal behaviors among people of African descent. In this study, students react to Cooke's study conducted in the late 1960s by commenting on Cooke's initial findings in comparison to nonverbal behaviors practiced among Black people as of late. Respondents suggest that while differences and variations exist between the expression of nonverbal behaviors exhibited by the original group studied and people recently observed, there yet remains a similarity in the cultural significance and motivation behind the displays.

  20. Ur phänomen y su transposición:: Benjamin y el Idealismo goetheano

    Directory of Open Access Journals (Sweden)

    Tupac Cruz

    2007-01-01

    Full Text Available Una lectura de la "Erkenntnis-kritische Vorrede" a Ursprung des deutsches Trauerspiels busca determinar en qué sentido Benjamin efectúa, en la teoría de las ideas allí esbozada, lo que él mismo llamó después una "tranposicion" del concepto goetheano de Urphänomen. El cotejo con algunos de los naturwissenschaftliche Schriften de Goethe sugiere que ambos autores aventuran una manera de pensar la relación entre los conceptos de verdad y totalidad a través de la confrontación y manipulación forzosa de las distinciones introducidas por la filosofía crítica de Kant. En este sentido sus esbozos lógicos y epistemológicos se dejan leer como marcadores de los momentos inaugural y concluyente del proyecto del idealismo alemán.

  1. Solitons, compactons and undular bores in Benjamin-Bona-Mahony-like systems

    Science.gov (United States)

    Saha, Aparna; Talukdar, B.; Das, Umapada; Chatterjee, Supriya

    2017-02-01

    We examine the effect of dissipation on travelling waves in nonlinear dispersive systems modelled by Benjamin-Bona-Mahony (BBM)-like equations. In the absence of dissipation, the BBM-like equations are found to support soliton and compacton /anticompacton solutions depending on whether the dispersive term is linear or nonlinear. We study the influence of increasing nonlinearity of the medium on the soliton and compacton dynamics. The dissipative effect is found to convert the solitons either to undular bores or to shock-like waves depending on the degree of nonlinearity of the equations. The anticompacton solutions are also transformed to undular bores by the effect of dissipation. But the compactons tend to vanish due to viscous effects. The local oscillatory structures behind the bores and /or shock-like waves in the case of solitons and anticompactons are found to depend sensitively both on the coefficient of viscosity and solution of the unperturbed problem.

  2. Well-posedness and computation of solutions of a regularized Benjamin-Ono system

    Directory of Open Access Journals (Sweden)

    Felipe Alexander Pipicano

    2016-01-01

    Full Text Available En este artículo se estudia la existencia y la unicidad de soluciones del problema de Cauchy, en el caso periódico, para un sistema de tipo Benjamin-Ono regularizado (rBO, usando teoría de semigrupos, análisis de Fourier y el Teorema del punto fijo de Banach. Este sistema fue deducido recientemente por Muñoz [12] como un modelo débilmente dispersivo para la propagación de ondas internas con pequeña amplitud en la interface de dos fluidos inmiscibles con densidades constantes. Además se realizan algunos experimentos numéricos para analizar el error y la convergencia en tiempo y espacio de un esquema espectral de Fourier completamente discreto, a fin de aproximar las soluciones del problema de valor inicial asociado con el sistema rBO.

  3. DESPERTAR DEL SUEÑO: WALTER BENJAMIN Y EL PROBLEMA DEL SHOCK

    OpenAIRE

    Guido Vespucci

    2010-01-01

    El presente artículo pretende analizar la noción de shock como una puerta de acceso a la obra de Walter Benjamin. A través de la exploración de algunos de sus escritos más originales (tales como «La obra de arte en la época de su reproductibilidad técnica», las «Tesis de filosofía de la historia», el Libro de los Pasajes, entre otros) y sobre la base de una selección de ensayos acerca de su obra, intentaremos capturar la productividad analítica del concepto con el fin de poder iluminar su fun...

  4. Predictability of the Appearance of Anomalous Waves at Sufficiently Small Benjamin-Feir Indices

    CERN Document Server

    Ruban, V P

    2016-01-01

    The numerical simulation of the nonlinear dynamics of random sea waves at moderately small Benjamin-Feir indices and its comparison with the linear dynamics (at the coincidence of spatial Fourier harmonics near a spectral peak at a certain time $t_p$) indicate that the appearance of a rogue wave can be predicted in advance. If the linear approximation shows the presence of a sufficiently extensive and/or high group of waves in the near future after $t_p$, an anomalous wave is almost necessarily formed in the nonlinear model. The interval of reliable forecasting covers several hundred wave periods, which can be quite sufficient in practice for, e.g., avoiding the meeting of a ship with a giant wave.

  5. Periodic solutions of fully nonlinear autonomous equations of Benjamin-Ono type

    CERN Document Server

    Baldi, Pietro

    2012-01-01

    We prove the existence of time-periodic, small amplitude solutions of autonomous quasilinear or fully nonlinear completely resonant pseudo-PDEs of Benjamin-Ono type in Sobolev class. The result holds for frequencies in a Cantor set that has asymptotically full measure as the amplitude goes to zero. At the first order of amplitude, the solutions are the superposition of an arbitrarily large number of waves that travel with different velocities (multimodal solutions). The equation can be considered as a Hamiltonian, reversible system plus a non-Hamiltonian (but still reversible) perturbation that contains derivatives of the highest order. The main difficulties of the problem are: an infinite-dimensional bifurcation equation, and small divisors in the linearized operator, where also the highest order derivatives have nonconstant coefficients. The main technical step of the proof is the reduction of the linearized operator to constant coefficients up to a regularizing rest, by means of changes of variables and co...

  6. An infinite branching hierarchy of time-periodic solutions of the Benjamin-Ono equation

    Energy Technology Data Exchange (ETDEWEB)

    Wilkening, Jon

    2008-07-01

    We present a new representation of solutions of the Benjamin-Ono equation that are periodic in space and time. Up to an additive constant and a Galilean transformation, each of these solutions is a previously known, multi-periodic solution; however, the new representation unifies the subset of such solutions with a fixed spatial period and a continuously varying temporal period into a single network of smooth manifolds connected together by an infinite hierarchy of bifurcations. Our representation explicitly describes the evolution of the Fourier modes of the solution as well as the particle trajectories in a meromorphic representation of these solutions; therefore, we have also solved the problem of finding periodic solutions of the ordinary differential equation governing these particles, including a description of a bifurcation mechanism for adding or removing particles without destroying periodicity. We illustrate the types of bifurcation that occur with several examples, including degenerate bifurcations not predicted by linearization about traveling waves.

  7. The musical magic of ambiguity in Benjamin Britten’s Death in Venice

    Directory of Open Access Journals (Sweden)

    B.M. Spies

    2001-08-01

    Full Text Available This essay investigates the blurred musical significations in Benjamin Britten’s Death in Venice, an opera based on Thomas Mann’s important novella Der Tod in Venedig. The discussion of multiple meanings links up with two categories of ambiguity as set out by William Empson in his Seven Types of Ambiguity, that is two or more meanings which do not agree among themselves, but combine to make clear a more complicated state of mind, and two opposite meanings that show a fundamental division in the mind of the protagonist. It is indicated how this opera, as a story through music, portrays the physical and moral decay of the anti-hero, Gustav von Aschenbach, who enters the opera as a celebrated, worldrenowned writer.

  8. The Benjamin H. Kean Travel Fellowship in Tropical Medicine: Assessment of Impact at 15 Years.

    Science.gov (United States)

    Carman, Aubri S; John, Chandy C

    2017-06-26

    The Benjamin H. Kean Fellowship in Tropical Medicine is an American Society of Tropical Medicine and Hygiene initiative that provides medical students with funding for international clinical or research experiences lasting at least 1 month. Of the 175 Kean fellows from 1998 to 2013, 140 had current available e-mails, and 70 of the 140 (50%) responded to a survey about their fellowship experience. Alumni indicated that the Kean Fellowship had a high impact on their career plans with regard to preparation for (N = 65, 94.2%) and inspiration to pursue (N = 59, 88.1%) a career in tropical medicine and global health. Continued involvement in tropical medicine and global health was common: 52 alumni (74.3%) were currently working in tropical medicine or global health, 49 (71.0%) had done so in the interim between the Kean fellowship and their current position; and 17 of 19 Kean fellows (89.4%) who had completed all medical training and were now in professional practice continued to work in tropical medicine and global health. Alumni had been highly productive academically, publishing a total of 831 PubMed-indexed manuscripts, almost all on tropical medicine or global health topics, in the period between their fellowship year and 2013. Alumni reported strengths of the fellowship including funding, networking, and flexibility, and suggested that more networking and career mentoring would enhance the program. The Benjamin H. Kean fellowship program has been highly successful at inspiring and fostering ongoing work by trainees in tropical medicine and global health.

  9. Well-posedness and computation of solutions of a regularized Benjamin-Ono system

    Directory of Open Access Journals (Sweden)

    Felipe Alexander Pipicano

    2016-05-01

    Full Text Available This article is concerned with the existence and uniqueness of solutions of the Cauchy problem in the periodic setting for a regularized Benjamin-Ono type system (rBO by using semigroup theory, Fourier analysis and Banach’s fixed point theorem. This system was recently derived by Muñoz [12] as a weakly dispersive model for the propagation of small amplitude internal waves at the interface of two immiscible fluids with constant densities. We also conduct some numerical experiments to analyze the error and convergence in time and space of a fully discrete Fourier spectral scheme, for approximating the solutions of the initial value problem associated to the rBO system. Resumen. En este artículo se estudia la existencia y la unicidad de soluciones del problema de Cauchy, en el caso periódico, para un sistema de tipo Benjamin-Ono regularizado (rBO, usando teoría de semigrupos, análisis de Fourier y el Teorema del punto fijo de Banach. Este sistema fue deducido recientemente por Muñoz [12] como un modelo débilmente dispersivo para la propagación de ondas internas con pequeña amplitud en la interface de dos fluidos inmiscibles con densidades constantes. Además se realizan algunos experimentos numéricos para analizar el error y la convergencia en tiempo y espacio de un esquema espectral de Fourier completamente discreto, a fin de aproximar las soluciones del problema de valor inicial asociado con el sistema rBO.

  10. Predominance and high antibiotic resistance of the emerging Clostridium difficile genotypes NAPCR1 and NAP9 in a Costa Rican hospital over a 2-year period without outbreaks.

    Science.gov (United States)

    López-Ureña, Diana; Quesada-Gómez, Carlos; Montoya-Ramírez, Mónica; del Mar Gamboa-Coronado, María; Somogyi, Teresita; Rodríguez, César; Rodríguez-Cavallini, Evelyn

    2016-05-11

    Clostridium difficile is the major causative agent of nosocomial antibiotic-associated diarrhea. In a 2009 outbreak of C. difficile-associated diarrhea that was recorded in a major Costa Rican hospital, the hypervirulent NAP1 strain (45%) predominated together with a local genotype variant (NAPCR1, 31%). Both strains were fluoroquinolone-resistant and the NAPCR1 genotype, in addition, was resistant to clindamycin and rifampicin. We now report on the genotypes and antibiotic susceptibilities of 68 C. difficile isolates from a major Costa Rican hospital over a 2-year period without outbreaks. In contrast to our previous findings, no NAP1 strains were detected, and for the first time in a Costa Rican hospital, a significant fraction of the isolates were NAP9 strains (n=14, 21%). The local NAPCR1 genotype remained prevalent (n=18, 26%) and coexisted with 14 strains (21%) of classic hospital NAP types (NAP2, NAP4, and NAP6), eight new genotypes (12%), four environmental strains classified as NAP10 or NAP11 (6%), three strains without NAP designation (4%) and seven non-toxigenic strains (10%). All 68 strains were resistant to ciprofloxacin, 88% were resistant to clindamycin and 50% were resistant to moxifloxacin and rifampicin. Metronidazole and vancomycin susceptibilities were universal. The NAPCR1 and NAP9 strains, which have been associated with more severe clinical infections, were more resistant to antibiotics than the other strains. Altogether, our results confirm that the epidemiology of C. difficile infection is dynamic and that A(-)B(+) strains from the NAP9 type are on the rise not only in the developed world. Moreover, our results reveal that the local NAPCR1 strains still circulate in the country without causing outbreaks but with equally high antibiotic-resistance rates and levels.

  11. J-curve relation between daytime nap duration and type 2 diabetes or metabolic syndrome: A dose-response meta-analysis.

    Science.gov (United States)

    Yamada, Tomohide; Shojima, Nobuhiro; Yamauchi, Toshimasa; Kadowaki, Takashi

    2016-12-02

    Adequate sleep is important for good health, but it is not always easy to achieve because of social factors. Daytime napping is widely prevalent around the world. We performed a meta-analysis to investigate the association between napping (or excessive daytime sleepiness: EDS) and the risk of type 2 diabetes or metabolic syndrome, and to quantify the potential dose-response relation using cubic spline models. Electronic databases were searched for articles published up to 2016, with 288,883 Asian and Western subjects. Pooled analysis revealed that a long nap (≥60 min/day) and EDS were each significantly associated with an increased risk of type 2 diabetes versus no nap or no EDS (odds ratio 1.46 (95% CI 1.23-1.74, p Dose-response meta-analysis showed a J-curve relation between nap time and the risk of diabetes or metabolic syndrome, with no effect of napping up to about 40 minutes/day, followed by a sharp increase in risk at longer nap times. In summary, longer napping is associated with an increased risk of metabolic disease. Further studies are needed to confirm the benefit of a short nap.

  12. CM5, a Pre-Swarm Comprehensive Geomagnetic Field Model Derived from Over 12 Yr of CHAMP, Orsted, SAC-C and Observatory Data

    Science.gov (United States)

    Sabaka, Terence J.; Olsen, Nils; Tyler, Robert H.; Kuvshinov, Alexey

    2014-01-01

    A comprehensive magnetic field model named CM5 has been derived from CHAMP, Ørsted and SAC-C satellite and observatory hourly-means data from 2000 August to 2013 January using the Swarm Level-2 Comprehensive Inversion (CI) algorithm. Swarm is a recently launched constellation of three satellites to map the Earth's magnetic field. The CI technique includes several interesting features such as the bias mitigation scheme known as Selective Infinite Variance Weighting (SIVW), a new treatment for attitude error in satellite vector measurements, and the inclusion of 3-D conductivity for ionospheric induction. SIVW has allowed for a much improved lithospheric field recovery over CM4 by exploiting CHAMP along-track difference data yielding resolution levels up to spherical harmonic degree 107, and has allowed for the successful extraction of the oceanic M2 tidal magnetic field from quiet, nightside data. The 3-D induction now captures anomalous Solar-quiet features in coastal observatory daily records. CM5 provides a satisfactory, continuous description of the major magnetic fields in the near-Earth region over this time span, and its lithospheric, ionospheric and oceanic M2 tidal constituents may be used as validation tools for future Swarm Level-2 products coming from the CI algorithm and other dedicated product algorithms.

  13. Effects of Pleurotus sapidus (Schulzer Sacc. treatment on nutrient composition and ruminal fermentability of barley straw, barley rootless, and a mixture of the two

    Directory of Open Access Journals (Sweden)

    Alfonso Soto-Sánchez

    2015-09-01

    Full Text Available Barley (Hordeum vulgare L., and its derivatives, ranks fourth in cereal production worldwide, and the Pleurotus species are among the most efficient types of lignocellulolytic white-rot fungi. The objective of this research study was to evaluate the degradation of barley straw and barley rootless with an inoculum of Pleurotus to improve their nutritional availability as a food source for ruminants. Two experiments were conducted; the first was to determine the effects of inoculation of Pleurotus sapidus (Schulzer Sacc. (PS in barley straw (BS, barley rootless (BR, and a 75% BS and 25% BR mixture (M. The second experiment was to evaluate the same substrates in vitro ruminal fermentation. Barley rootless had better organic matter (OM degradability than BS after 24 h incubation with PS. The protein content in BR was higher than in BS (P < 0.01. Enzyme activities had the highest concentration from the start of fermentation, and in vitro dry matter (DM degradability in BS and BR increased after 8 and 24 d fermentation, respectively (P < 0.05. Propionic acid concentration was enhanced after 16 d fermentation in BR (P < 0.5. The use of BS combined with BR exhibited better fermentation; this result provides relevant information for integrating BR with other substrates and improving the use of straw, which can be more nutritionally available for feeding ruminants.

  14. Microflora de naranja adaptada al frío y su actividad antagónica frente a Penicillium digitatum (Pers. Sacc

    Directory of Open Access Journals (Sweden)

    Griselda Visintin

    2013-01-01

    Full Text Available Sobre las plantas existen poblaciones de microorganismos donde es posible encontrar antagonistas de patógenos. El presente artículo trata sobre la obtención de microorga- nismos que habitan la superficie de los cítricos y su preselección como potenciales an- tagonistas de patógenos poscosecha. Considera además, obtenerlos desde heridas en las frutas y su adaptación a condiciones de almacenamiento en frío. Diez aislamientos fueron evaluados como antagonistas potenciales de Penicillium digitatum (Pers. Sacc mediante inoculación forzada, registrando su eficacia mediante el porcentaje de heridas que permanecían asintomáticas y calculando el área bajo la curva de progreso de la enfermedad. Las cepas bacterianas S5 y S9 retrasaron 14 días la aparición de síntomas de podredumbres, logrando una eficacia máxima de protección biológica del 47,65%.

  15. Effects of ozone, sulfur dioxide, and alpha and delta races of Colletotrichum Lindemuthianum (Sacc. and Magn. ) Bri and Cav. on bean (Phaseolus vulgaris L. )

    Energy Technology Data Exchange (ETDEWEB)

    Achwanya, O.S.

    1984-01-01

    A number of bean (Phaseolus vulgaris L.) cultivars were evaluated for their responses to the air pollutants ozone and sulfur dioxide singly and in combination, as well as for their reaction to the alpha and delta races of Colletotrichum lindemuthianum (Sacc. and Magn.) Bri and Cav. Variation in response to both the pollutants and the fungus was noted among the cultivars. Anthracnose caused a reduction in the biomass of some cultivars of the order of 50%. A negative correlation of (r = -0.72, p < 0.0001) was found between the disease severity and the total plant biomass. Greater than additive effects of O/sub 3/ + SO/sub 2/ mixtures were demonstrated. Chlorophyll content and biomass were found to be reliable variables for assessing treatment effects. The pollutants appeared to stimulate the disease development. Greater pollutant injury was also in the presence of the anthracnose disease. The results indicated that there was an interaction between the fungal disease and the air pollutants. Implications for evaluating bean cultivars for resistance to C. lindemuthianum under polluted atmosphere are suggested.

  16. Stress Physiology and Virulence Characterization of Phomopsis asparagi (Sacc.) Bub6k isolated from Asparagus in Jiangxi Province of China

    Institute of Scientific and Technical Information of China (English)

    Yueping ZHANG; Guangyu CHEN; Shaochun LUO; Huaxiang QU; Yongping TANG; Qixin XIE; Jinsong ZHOU

    2012-01-01

    Abstract Fungal pathogen of asparagus stem blight was isolated. No significant ge- netic difference was detected among the three strains with 492 bp long ITS1-5.8S- ITS2 sequence. It was then identified through colony growth, conidia morphology, and molecular characterization. The physiological response to oxidation and osmosis stress, and virulence to Asparagus officinalis L. were analyzed. The results showed that the pathogen causing asparagus stem blight for A. officinalis L. in Jiangxi Province is Phomopsis asparagri (Sacc.) Bubok. Under pure culture conditions, the conidia were oval-shaped (a-type), with colorless single spore and single nucleus, containing 0-2 oil balls. Its vegetative growth rate was higher when cultured on 0.2 x potato dextrose agar (0.2 x PDA) medium than that on oatmeal agar (OA) medium. However, the pycnidia appeared earlier on OA medium than on 0.2 earlier PDA medium. The vegetative growth rate was depressed under oxidation (H202) or osmo- sis (NaCI) stress conditions, and totally inhibited under 7 mmol/L H202 or 2.4 mol/L NaCI. All the strains caused typical pathogenic symptoms to Asparagus officinalis L. at 7 days-post-inoculation (dpi) with conidia.

  17. Work schedule and self-reported hypertension - the potential beneficial role of on-shift naps for night workers.

    Science.gov (United States)

    Rotenberg, Lúcia; Silva-Costa, Aline; Vasconcellos-Silva, Paulo Roberto; Griep, Rosane Härter

    2016-01-01

    Data on the association between shift work and hypertension are controversial. Sleep restriction is hypothesized to be involved in this relationship. Since on-shift nap can partly compensate for sleep deprivation among night workers, this investigation is aimed at (i) comparing the prevalence of hypertension among workers considering both current and former night work, (ii) testing the association between on-shift naps and hypertension among night workers, and (iii) analyzing the influence of sleep complaints in the association between on-shift nap and hypertension. Nap was defined as a sleep episode with duration shorter than the average nighttime sleep. A cross-sectional study was performed at the 18 largest public hospitals in Rio de Janeiro, Brazil, in 2010-2011 (N = 2588 female registered nurses). Nurses were informally allowed to nap for up to three consecutive hours during working nights. Workers completed a multidimensional questionnaire including self-reported information on physician diagnosis of hypertension, napping, and sleep complaints (insomnia, diurnal sleepiness, and non-satisfactory sleep). Epidemiological and statistical treatment of data included binomial logistic regression and interaction tests. Higher chances of hypertension were observed for both current and former night workers compared with workers with no previous experience in night work, i.e. exclusive day workers (OR = 1.68; CI95% 1.22-2.33 and OR = 1.40; CI95% 1.01-1.96, respectively) after adjustment for age, race/ethnicity, physical activity, smoking, alcohol consumption, insomnia, weekly work hours, and BMI. Compared with exclusive day workers, both non-nappers and nappers were at a higher likelihood of reporting hypertension (OR = 1.93 CI95% 1.35-2.79 and OR = 1.41 CI95% 1.08-2.20, respectively). An interaction was observed between napping behavior and insomnia (p = 0.037). In the whole sample of night workers, the lower OR for nappers was confirmed when they were directly

  18. REM-Enriched Naps Are Associated with Memory Consolidation for Sad Stories and Enhance Mood-Related Reactivity

    Directory of Open Access Journals (Sweden)

    Médhi Gilson

    2015-12-01

    Full Text Available Emerging evidence suggests that emotion and affect modulate the relation between sleep and cognition. In the present study, we investigated the role of rapid-eye movement (REM sleep in mood regulation and memory consolidation for sad stories. In a counterbalanced design, participants (n = 24 listened to either a neutral or a sad story during two sessions, spaced one week apart. After listening to the story, half of the participants had a short (45 min morning nap. The other half had a long (90 min morning nap, richer in REM and N2 sleep. Story recall, mood evolution and changes in emotional response to the re-exposure to the story were assessed after the nap. Although recall performance was similar for sad and neutral stories irrespective of nap duration, sleep measures were correlated with recall performance in the sad story condition only. After the long nap, REM sleep density positively correlated with retrieval performance, while re-exposure to the sad story led to diminished mood and increased skin conductance levels. Our results suggest that REM sleep may not only be associated with the consolidation of intrinsically sad material, but also enhances mood reactivity, at least on the short term.

  19. REM-Enriched Naps Are Associated with Memory Consolidation for Sad Stories and Enhance Mood-Related Reactivity.

    Science.gov (United States)

    Gilson, Médhi; Deliens, Gaétane; Leproult, Rachel; Bodart, Alice; Nonclercq, Antoine; Ercek, Rudy; Peigneux, Philippe

    2015-12-29

    Emerging evidence suggests that emotion and affect modulate the relation between sleep and cognition. In the present study, we investigated the role of rapid-eye movement (REM) sleep in mood regulation and memory consolidation for sad stories. In a counterbalanced design, participants (n = 24) listened to either a neutral or a sad story during two sessions, spaced one week apart. After listening to the story, half of the participants had a short (45 min) morning nap. The other half had a long (90 min) morning nap, richer in REM and N2 sleep. Story recall, mood evolution and changes in emotional response to the re-exposure to the story were assessed after the nap. Although recall performance was similar for sad and neutral stories irrespective of nap duration, sleep measures were correlated with recall performance in the sad story condition only. After the long nap, REM sleep density positively correlated with retrieval performance, while re-exposure to the sad story led to diminished mood and increased skin conductance levels. Our results suggest that REM sleep may not only be associated with the consolidation of intrinsically sad material, but also enhances mood reactivity, at least on the short term.

  20. Optimization of hydrothermal synthesis of pure phase zeolite Na-P1 from South African coal fly ashes.

    Science.gov (United States)

    Musyoka, Nicholas M; Petrik, Leslie F; Gitari, Wilson M; Balfour, Gillian; Hums, Eric

    2012-01-01

    This study was aimed at optimizing the synthesis conditions for pure phase zeolite Na-P1 from three coal fly ashes obtained from power stations in the Mpumalanga province of South Africa. Synthesis variables evaluated were: hydrothermal treatment time (12-48 hours), temperature (100-160°C) and varying molar quantities of water during the hydrothermal treatment step (H(2)O:SiO(2) molar ratio ranged between 0-0.49). The optimum synthesis conditions for preparing pure phase zeolite Na-P1 were achieved when the molar regime was 1 SiO(2): 0.36 Al(2)O(3): 0.59 NaOH: 0.49 H(2)O and ageing was done at 47°C for 48 hours. The optimum hydrothermal treatment time and temperature was 48 hours and 140°C, respectively. Fly ashes sourced from two coal-fired power plants (A, B) were found to produce nearly same high purity zeolite Na-P1 under identical conditions whereas the third fly ash (C) lead to a low quality zeolite Na-P1 under these conditions. The cation exchange capacity for the high pure phase was found to be 4.11 meq/g. These results highlight the fact that adjustment of reactant composition and presynthesis or synthesis parameters, improved quality of zeolite Na-P1 can be achieved and hence an improved potential for application of zeolites prepared from coal fly ash.

  1. Functional characterization of a NapA Na(+)/H(+) antiporter from Thermus thermophilus.

    Science.gov (United States)

    Furrer, Esther M; Ronchetti, Mirco F; Verrey, François; Pos, Klaas M

    2007-02-06

    Na(+)/H(+) antiporters are ubiquitous membrane proteins and play an important role in cell homeostasis. We amplified a gene encoding a member of the monovalent cation:proton antiporter-2 (CPA2) family (TC 2.A.37) from the Thermus thermophilus genome and expressed it in Escherichia coli. The gene product was identified as a member of the NapA subfamily and was found to be an active Na(+)(Li(+))/H(+) antiporter as it conferred resistance to the Na(+) and Li(+) sensitive strain E. coli EP432 (DeltanhaA, DeltanhaB) upon exposure to high concentration of these salts in the growth medium. Fluorescence measurements using the pH sensitive dye 9-amino-6-chloro-2-methoxyacridine in everted membrane vesicles of complemented E. coli EP432 showed high Li(+)/H(+) exchange activity at pH 6, but marginal Na(+)/H(+) antiport activity. Towards more alkaline conditions, Na(+)/H(+) exchange activity increased to a relative maximum at pH 8, where by contrast the Li(+)/H(+) exchange activity reached its relative minimum. Substitution of conserved residues D156 and D157 (located in the putative transmembrane helix 6) with Ala resulted in the complete loss of Na(+)/H(+) activity. Mutation of K305 (putative transmembrane helix 10) to Ala resulted in a compromised phenotype characterized by an increase in apparent K(m) for Na(+) (36 vs. 7.6 mM for the wildtype) and Li(+) (17 vs. 0.22 mM), In summary, the Na(+)/H(+) antiport activity profile of the NapA type transporter of T. thermophilus resembles that of NhaA from E. coli, whereas in contrast to NhaA the T. thermophilus NapA antiporter is characterized by high Li(+)/H(+) antiport activity at acidic pH.

  2. Nap environment control considering respiration rate and music tempo by using sensor agent robot

    Science.gov (United States)

    Nakaso, Sayaka; Mita, Akira

    2015-03-01

    We propose a system that controls a nap environment considering respiration rates and music tempo by using a sensor agent robot. The proposed system consists of two sub-systems. The first sub-system measures respiration rates using optical flow. We conducted preparatory experiments to verify the accuracy of this sub-system. The experimental results showed that this sub-system can measure the respiration rates accurately despite several positional relationships. It was also shown that the accuracy could be affected by clothes, movements and light. The second sub-system we constructed was the music play sub-system that chooses music with the certain tempo corresponding to the respiration rates measured by the first sub-system. We conducted verification experiments to verify the effectiveness of this music play sub-system. The experimental results showed the effectiveness of varying music tempo based on the respiration rates in taking a nap. We also demonstrated this system in a real environment; a subject entered into the room being followed by ebioNα. When the subject was considered sleeping, ebioNα started measuring respiration rates, controlling music based on the respiration rates. As a result, we showed that this system could be realized. As a next step, we would like to improve this system to a nap environment control system to be used in offices. To realize this, we need to update the first sub-system measuring respiration rates by removing disturbances. We also need to upgrade music play sub-system considering the numbers of tunes, the kinds of music and time to change music.

  3. “Intermittency: the differential of time and the integral of space. The intensive spatiality of the Monad, the Apokatastasis and the Messianic World in Benjamin's latest thinking”

    Directory of Open Access Journals (Sweden)

    Fabrizio Desideri

    2016-05-01

    Full Text Available The main topic of my paper concerns the theological-philosophical nexus between the intensive and qualitative spatiality of the Monad and the Origenian idea of Apokatastasis as a nexus that can clarify Benjamin's latest idea of the Messianic World. The first step will be, therefore, to explain (1 Benjamin's use of the Origenian notion of Apokatastasis in his Essay on Leskov and in the Passagenwerk. Secondly, I will discuss (2 how and to what extent such use is relevant for Benjamin's idea of Messianism. Thirdly, I will propose (3 the thesis that, for Benjamin, a messianic idea of time implies a monadological idea of space. In this regard, the relationship between continuity and discontinuity, which is crucial to understand the late Benjamin's idea of history, must be understood precisely as a dialectical relationship that involves not only time but also space. (4 The figure of intermittence – as we shall see – expresses in the most suitable way the intertwining of space and time as dialectically and  messianicaly oriented. This sequence of logical steps and critical considerations will shed light on the true nature of Benjamin's idea of dialectics and on its relationship to the idea of the totality. The real term of confrontation of Benjamin's late philosophy (from the Passagenwerk to the Theses on the concept of history does not concern, therefore, Heidegger, but Hegel. In the light of this confrontation, Heidegger's Being and Time is already in pieces. It is as it were – we can say – behind Benjamin's movement of thought.

  4. Halotolerant cyanobacterium Aphanothece halophytica contains NapA-type Na+/H+ antiporters with novel ion specificity that are involved in salt tolerance at alkaline pH.

    Science.gov (United States)

    Wutipraditkul, Nuchanat; Waditee, Rungaroon; Incharoensakdi, Aran; Hibino, Takashi; Tanaka, Yoshito; Nakamura, Tatsunosuke; Shikata, Masamitsu; Takabe, Tetsuko; Takabe, Teruhiro

    2005-08-01

    Aphanothece halophytica is a halotolerant alkaliphilic cyanobacterium which can grow at NaCl concentrations up to 3.0 M and at pH values up to 11. The genome sequence revealed that the cyanobacterium Synechocystis sp. strain PCC 6803 contains five putative Na+/H+ antiporters, two of which are homologous to NhaP of Pseudomonas aeruginosa and three of which are homologous to NapA of Enterococcus hirae. The physiological and functional properties of NapA-type antiporters are largely unknown. One of NapA-type antiporters in Synechocystis sp. strain PCC 6803 has been proposed to be essential for the survival of this organism. In this study, we examined the isolation and characterization of the homologous gene in Aphanothece halophytica. Two genes encoding polypeptides of the same size, designated Ap-napA1-1 and Ap-napA1-2, were isolated. Ap-NapA1-1 exhibited a higher level of homology to the Synechocystis ortholog (Syn-NapA1) than Ap-NapA1-2 exhibited. Ap-NapA1-1, Ap-NapA1-2, and Syn-NapA1 complemented the salt-sensitive phenotypes of an Escherichia coli mutant and exhibited strongly pH-dependent Na+/H+ and Li+/H+ exchange activities (the highest activities were at alkaline pH), although the activities of Ap-NapA1-2 were significantly lower than the activities of the other polypeptides. Only one these polypeptides, Ap-NapA1-2, complemented a K+ uptake-deficient E. coli mutant and exhibited K+ uptake activity. Mutagenesis experiments suggested the importance of Glu129, Asp225, and Asp226 in the putative transmembrane segment and Glu142 in the loop region for the activity. Overexpression of Ap-NapA1-1 in the freshwater cyanobacterium Synechococcus sp. strain PCC 7942 enhanced the salt tolerance of cells, especially at alkaline pH. These findings indicate that A. halophytica has two NapA1-type antiporters which exhibit different ion specificities and play an important role in salt tolerance at alkaline pH.

  5. First report of Clostridium difficile NAP1/027 in a Mexican hospital.

    Directory of Open Access Journals (Sweden)

    Adrián Camacho-Ortiz

    Full Text Available Clostridium difficile NAP1/ribotype 027 is associated with severe disease and high mortality rates. Our aim was to determine the prevalence of NAP1/ribotype 027 among C. difficile isolates in a tertiary care hospital, and review the main clinical data.We included 106 stool samples from 106 patients. Samples were tested for A&B toxins and were cultured on CCFA agar. The genes tcdA, tcdB, tcdC, cdtA, and cdtB were amplified using PCR in clinical isolates. The tcdA 3'-end deletion analysis, PCR-ribotyping, and pulsed-field gel electrophoresis (PFGE were also performed. Stool samples that were positive for culture were tested by the GeneXpert C. difficile assay. Clinical data were collected.Thirty-six patients tested positive for A&B toxins; and 22 patients had positive culture for C. difficile, 14 of which tested positive for the A&B toxins and all 22 patients tested positive by the GeneXpert C. difficile assay. Risk factors included an average hospital stay of 16.1 days prior to toxin detection, average antibiotic use for 16.2 days, and a median of 3 antibiotics used. The 30-day crude mortality rate was 8.4%. Six of the 22 patients died, and 3 of those deaths were directly attributed to C. difficile infection. The majority of isolates, 90.9% (20/22, carried genes tcdB, tcdA, cdtA, and cdtB; and these strains carried the corresponding downregulator gene tcdC, with an 18-bp deletion. PFGE was performed on 17 isolates, and one main pattern was observed. Analysis of the ribotyping data showed similar results.The above findings represent the clonal spread of C. difficile in our institution, which mainly includes the NAP1/027 strain. This is the first report of C. difficile ribotype NAP1/027 in Mexico.

  6. Título da página electrónica: The Walter Benjamin Research Syndicate

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    José Manuel Mendes

    2012-10-01

    Full Text Available Esta página procura ser um repertório de textos em torno da obra de Walter Benjamin e um incentivo à divulgação de trabalhos sobre a teoria crítica proposta por este autor. É editor da página Scott J. Thompson, docente do New College of California. No texto de apresentação, é referido que o objectivo central desta publicação electrónica é atender aos textos mais marginais de Walter Benjamin, excluídos ou pouco trabalhados na academia. Embora a página não esteja estruturada de forma a permitir...

  7. Well-posedness of Cauchy problems for Korteweg-de Vries-Benjamin-Ono equation and Hirota equation

    Institute of Scientific and Technical Information of China (English)

    HUO Zhaohui; GUO Boling

    2004-01-01

    The well-posedness of the Cauchy problems to the Korteweg-de Vries-Benjamin-Ono equation and Hirota equation is considered. For the Korteweg-de Vries-Benjamin-Ono equation, local result is established for data in Hs(R)(s≥-1/8). Moreover, the global well-posedness for data in L2(R) can be obtained. For Hirota equation, local result is established for initial data in Hs(s≥1/4) .In addition, the local solution is proved to be global in Hs (s≥1) if the initial data are in Hs (s≥1) by energy inequality and the generalization of the trilinear estimates associated with the Fourier restriction norm method.

  8. Histone density is maintained during transcription mediated by the chromatin remodeler RSC and histone chaperone NAP1 in vitro.

    Science.gov (United States)

    Kuryan, Benjamin G; Kim, Jessica; Tran, Nancy Nga H; Lombardo, Sarah R; Venkatesh, Swaminathan; Workman, Jerry L; Carey, Michael

    2012-02-01

    ATPases and histone chaperones facilitate RNA polymerase II (pol II) elongation on chromatin. In vivo, the coordinated action of these enzymes is necessary to permit pol II passage through a nucleosome while restoring histone density afterward. We have developed a biochemical system recapitulating this basic process. Transcription through a nucleosome in vitro requires the ATPase remodels structure of chromatin (RSC) and the histone chaperone nucleosome assembly protein 1 (NAP1). In the presence of NAP1, RSC generates a hexasome. Despite the propensity of RSC to evict histones, NAP1 reprograms the reaction such that the hexasome is retained on the template during multiple rounds of transcription. This work has implications toward understanding the mechanism of pol II elongation on chromatin.

  9. Performance of flash profile and napping with and without training for describing small sensory differences in a model wine

    DEFF Research Database (Denmark)

    Liu, Jing; Grønbeck, Marlene Schou; Di Monaco, Rosella

    2016-01-01

    generation step and limiting the number of attributes for ranking gave a similar sample space. The Napping method could best highlight qualitative sample differences, whereas the Flash Profile provided a more precise product mapping on quantitative differences between model wines.......Publication date: March 2016 Source:Food Quality and Preference, Volume 48, Part A Author(s): Jing Liu, Marlene Schou Grønbeck, Rossella Di Monaco, Davide Giacalone, Wender L.P. Bredie Rapid sensory methods are a convenient alternative to conventional descriptive analysis suitable for quickly...... to arrange samples on the sheet) or the product (familiarisation with the sensory properties of the wines) improved the outcome compared to the classical Napping protocol. The classical Flash Profile protocol and its modified version including a Napping with subsequent attributes generation as the word...

  10. Un taccuino a forma di strada. Su "Einbahnstrasse" di Walter Benjamin

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    Pier Giovanni Adamo

    2016-05-01

    Full Text Available La poetica di F. Schlegel ha realizzato una storicizzazione della teoria dei generi letterari sostituendo alla dicotomia del classicismo tra forma e contenuto una distinzione tra forma e spirito, secondo cui i materiali linguistico-tematici rappresentano i precipitati di quest’ultimo. Riprendendo questa intuizione di P. Szondi, potremmo affermare che, nella modernità letteraria, l’ibridazione è il processo di transizione dei materiali attraverso le forme. Un’opera tanto esemplare quanto strutturalmente rilevante, nell’orizzonte dell’ibridazione, è Einbahnstraße di Walter Benjamin, dove i materiali più disparati sono combinati a modellare una forma innovativa. Vi si mescolano stilemi della poesia in prosa, narrazione diaristica, (antimetodo surrealista, satira e intuizioni filosofiche. L’unicità, d’altra parte, risiede innanzitutto nell’essenza metacritica del procedimento organizzativo del libro: il frammentismo sistematico è un’applicazione pratica della teoria allegorica del montaggio, descritta nell’Ursprung des deutschen Trauerspiels. Il saggio si propone di leggere il testo come «un taccuino a forma di strada», anche per indagarne il valore di prologo al Passagenwerk, nato dall’avida lettura del Paysan de Paris di Aragon: istituisce un confronto per rilevare, nell’affinità di fondo, la  diversità di approccio tra il pensatore tedesco e il surrealismo, distinguendo tecniche di assemblaggio e ruolo dell’immaginario nell’uso di pubblicità e altri oggetti metropolitani. L’intenzione di una simile analisi di Einbahnstraße è dimostrare che Benjamin combina modelli letterari (Baudelaire, Proust, Kraus su tutti con i nuovi linguaggi artistici e le strategie discorsive della stampa per creare un’«immagine dialettica» dell’esistenza nel XX secolo.Friedrich Schlegel’s poetics realized a historicisation of literary genres theory by replacing classicist dichotomy between form and content with a

  11. Bright and dark soliton solutions of the (3 + 1)-dimensional generalized Kadomtsev–Petviashvili equation and generalized Benjamin equation

    Indian Academy of Sciences (India)

    Ahmet Bekir; Özkan Güner

    2013-08-01

    In this paper, we obtain the 1-soliton solutions of the (3 + 1)-dimensional generalized Kadomtsev–Petviashvili (gKP) equation and the generalized Benjamin equation. By using two solitary wave ansatz in terms of sech$^{p}$ and tanh$^{p}$ functions, we obtain exact analytical bright and dark soliton solutions for the considered model. These solutions may be useful and desirable for explaining some nonlinear physical phenomena in genuinely nonlinear dynamical systems.

  12. Putting patients first. A conversation with Benjamin Chu, M.D., the new chair-elect of the AHA.

    Science.gov (United States)

    Weinstock, Matthew

    2011-11-01

    The son of immigrants, Benjamin Chu, M.D., has followed an unusual life path from New York's Chinatown to Southern California, where he is now an executive with Kaiser Foundation Hospitals and Health Plan. Dismayed by the daunting challenges facing health care, the AHA chair-elect became a strong believer that the system can and must change, always keeping the focus firmly on the patient.

  13. Mimese, linguagem e poesia: pensamentos sobre origem e repetição em Benjamin e Heidegger

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    Luiz Felipe da Cunha e Silva

    2016-10-01

    Full Text Available A partir do pensamento de Benjamin sobre a repetição, a mimese e a semelhança não física, chega-se à linguagem e ao prazer do signo, que são discutidos à luz do pensamento de Heidegger sobre a origem da poesia e da obra de arte. O problema da origem da linguagem faz o pano de fundo da discussão.

  14. Benjamin Franklin, 1706-2008 : anatomie d’un tricentenaire transatlantique

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    Marie-Jeanne Rossignol

    2009-12-01

    Full Text Available Cet article analyse le Tricentenaire de Benjamin Franklin, qui eut lieu de 2006 à 2008. A l’occasion de cette date anniversaire, de nombreux livres furent publiés, des colloques et expositions organisés aux Etats-Unis. Ces travaux et manifestations ont produit un nouveau regard, critique, sur Franklin, père fondateur assez extraordinaire. L’exposition principale est venue à Paris, au cours de l’hiver 2007-2008, clairement dans le cadre d’une volonté de rapprocher les deux pays à la suite des controverses suscitées par la Guerre en Irak. Cette commémoration franco-américaine a eu comme objectif principal de souligner la diplomatie et la collaboration transatlantiques, et non de présenter Franklin sous toutes ses facettes, et de l’intégrer au contexte de son époque dans son pays. Un symposium fut donc organisé à l’Université Paris – Diderot afin de mettre en valeur les travaux scientifiques sur Franklin, français, mais aussi étrangers. Les principales communications sont présentées dans ce dossier.This paper offers reflections on the Benjamin Franklin Tercentenary, which took place from 2006 to 2008. This anniversary was celebrated by many publications, conferences and exhibitions in the United States, producing a renewed and critical understanding of Franklin, “not your usual founding father”. The main exhibition travelled to France (2007-2008, clearly as part of an attempt to patch up relationships between the two countries in the wake of the Iraq war controversy. The main focus in this Franco-American commemoration was on transatlantic diplomacy and collaboration, not really on Franklin in his multiple capacities, in his time and country of birth. The conference organized at Université Paris-Diderot in January 2008 was by contrast a scholarly affair, highlighting work on Franklin conducted by French and foreign specialists. Most of the papers are presented here.

  15. Entretelones de una "estética operatoria" Luis Juan Guerrero y Walter Benjamin

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    Luis Ignacio García

    2009-06-01

    Full Text Available En este artículo se ensaya una aproximación a la labor estético-filosófica del argentino Luis Juan Guerrero (1899-1957, a través de un cotejo de su temprana y productiva recepción de algunos aspectos centrales de la obra de Walter Benjamin. Se intenta mostrar que esta clave de lectura permite un acceso privilegiado a la labor de Guerrero, a la vez que ayuda a construir una imagen más compleja y matizada de la generación intelectual "antipositivista" a la que perteneció. La olvidada obra de Guerrero se compone principalmente de trabajos sobre ética, psicología y estética. Acotaremos nuestra atención a su principal trabajo, y acaso la obra sobre estética más ambiciosa jamás escrita en nuestro país: Estética Operatoria en sus Tres Direcciones. Se muestra en el artículo que la summa estética de Guerrero, si bien expresa con toda claridad las preocupaciones centrales de una generación intelectual marcada por la cultura alemana de entreguerras y por la problemática de la "crisis de la cultura", inscribe, a su vez, una anomalía -benjaminiana-, una inflexión político-materialista, que pone en cuestión la idea frecuente de que la "crisis de la cultura" una y otra vez diagnosticada en aquella época mostró siempre alternativas "espiritualistas" de resolución.This essay deals with the aesthetic-philosophical work of the Argentinean Luis Juan Guerrero (1899-1957, through a consideration of its early and fruitful reception of some central aspects of Walter Benjamin's work. It is shown that this perspective allows a privileged access to Guerrero's work, at the same time that it makes more complex the image of the "anti-positivistic" intellectual generation in Argentina. Guerrero's forgotten work includes principally contributions on ethics, psychology and aesthetics. This essay will pay attention only to his most important work, maybe the most ambitious aesthetic work ever written in Argentina: Operatory Aesthetics in its Three

  16. Für das Spielen lernen wir – Konzept und Evaluation des internationalen Medizinstudierendenwettbewerbs "Benjamin Franklin Contest" [Learning for the game – concept and evaluation of the international medical student competition "Benjamin Franklin Contest"

    Directory of Open Access Journals (Sweden)

    Tolxdorff, Thomas

    2010-08-01

    Full Text Available [english] Objective: In 1998 an international contest for medical students called “Benjamin Franklin Contest” was initiated by the former university hospital of Freie Universität Berlin on the occasion of the 30th anniversary of its foundation in 1968. Since then, seven teams from Germany, Austria, and Switzerland have been competing against each other every year. Five medical students per team match up in paper cases, diagnosis of medical images, multiple choice tests, and practical skills.Methods: All participants of the 11th Benjamin Franklin Contest (2009 were asked about their motivation, preparation strategy, and experience with the contest. Results: In total 92% (32 of 35 participated in the evaluation study. We show that improvement of medical knowledge is one of the key motivating factors behind participation in the competition. The teams were trained by self-study, tutorials, and learning groups. Remarkably, students invested 54.2 hours (SD 32 hours of their free time to prepare for the contest. Conclusions: The Benjamin Franklin Contest is an innovative approach to facilitate self-directed learning and develope medical competencies. [german] Zielsetzung: Im Jahr 1998 wurde am damaligen Universitätsklinikum Benjamin Franklin der Freien Universität (FU in Berlin der internationale Medizinstudierendenwettbewerb „Benjamin Franklin Contest“ (BFC initiiert. Anlass war damals der 30. Jahrestag der Gründung der Universitätsmedizin an der FU. Seitdem findet jedes Jahr ein Wettbewerb zwischen sieben Teams von medizinischen Fakultäten aus Deutschland, Österreich und der Schweiz statt. Jeweils fünf Studierende messen sich in den Kategorien Papierfälle, Blickdiagnosen, Auswahlfragen und praktische Fähigkeiten.Methodik: Ziel dieser Arbeit ist die Beschreibung des Projektes BFC und eine erste Evaluation der Erfahrung von Teilnehmenden. Dazu wurden alle Teilnehmenden des 11. BFC (2009 mittels eines selbst entwickelten Fragebogens

  17. Synthesis and characterization of zeolite NaP using kaolin waste as a source of silicon and aluminum

    Energy Technology Data Exchange (ETDEWEB)

    Hildebrando, Edemarino Araujo, E-mail: edemarino@ufpa.br [Universidae Federal do Para (UFPA), Maraba, PA (Brazil). Fac. de Engenharia de Materias. Lab. de Materiais Ceramicos; Andrade, Christiano Gianesi Bastos; Valenzuela-Diaz, Francisco Rolando [Universidade de Sao Paulo (USP), Sao Paulo, SP (Brazil). Dept. de Metalurgia e Engenharia de Materiais; Rocha Junior, Carlos Augusto Ferreira da; Neves, Roberto de Freitas [Universidae Federal do Para (UFPA), Maraba, PA (Brazil). Int. de Tecnologia. Fac. de Engenharia Quimica; Angelica, Romulo Simoes [Universidae Federal do Para (UFPA), Maraba, PA (Brazil). Inst. de Geociencias. Fac. de Geologia

    2014-08-15

    The synthesis of zeolite NaP using kaolin waste, from the Amazon region, as a predominant source of silicon and aluminum has been studied. The zeolitisation process occurred in hydrothermal conditions using static autoclaving and the effects of time, temperature, and the Si/Al ratio were investigated. The starting material and the phases formed as reaction products were characterized by XRD, SEM and FTIR. The results showed that pure zeolite NaP is hydrothermally synthesized, at 100 °C for 20 hours, using meta kaolin waste material in alkaline medium in presence of additional silica. The XRD and SEM analyses indicate that the synthesized zeolite presents good crystallinity. (author)

  18. Napping during the night shift and recovery after work among hospital nurses

    Directory of Open Access Journals (Sweden)

    Thaís Aparecida de Castro Palermo

    2015-02-01

    Full Text Available OBJECTIVE: To analyze the association between the length of napping during the night shift and the recovery after work among nurses.METHOD: Cross-sectional epidemiological study involving 1940 nurses from 18 public hospitals in the City of Rio de Janeiro. A multidimensional and self-applied questionnaire was used with information about health, sociodemographic and occupational characteristics, health-related behaviors and housework. Multiple logistic regression was applied to identify the association, adjusted for confounding variables.RESULTS: The gross analyses showed 44%, 127% and 66% higher chances of a high level of recovery after work for nurses who sleep up to two hours, between 2.1 and 3 hours and 3.1 hours or more, respectively, when compared to the nurses who do not sleep. After adjusting for confounding variables, the association only continues significant for the group that sleeps 2.1 to 3 hours during the night shift (OR=1.79; 95%CI=1.33-2.41.CONCLUSION: The association between the length of napping and the high level of recovery after work, confirmed in the present results, can be included in the studies that aim to support more appropriate policies aimed at improving the workers' work, life and health conditions, not only in nursing, but night-shift workers in general.

  19. Job demands and resting and napping opportunities for nurses during night shifts: impact on sleepiness and self-evaluated quality of healthcare.

    Science.gov (United States)

    Barthe, Béatrice; Tirilly, Ghislaine; Gentil, Catherine; Toupin, Cathy

    2016-01-01

    The aim of this field study is to describe night shift resting and napping strategies and to examine their beneficial effects on sleepiness and quality of work. The study was carried out with 16 nurses working in an intensive care unit. Data collected during 20 night shifts were related to job demands (systematic observations), to the duration and timing of rests and naps taken by nurses (systematic observations, sleep diaries), to sleepiness (Karolinska Sleepiness Scale), and to quality of work scores (visual analog scale). The results showed that the number of rests and naps depended on the job demands. Resting and napping lowered the levels of sleepiness at the end of the shift. There was no direct relationship between sleepiness and the quality of work score. Discussions about the choice of indicators for the quality of work are necessary. Suggestions for implementing regulations for prescribed napping during night shifts are presented.

  20. Benjamin Franklin and the dentist: the story of R. C. Skinner.

    Science.gov (United States)

    Ring, Malvin

    2006-01-01

    Among Benjamin Franklin's papers was a letter from a young British immigrant, R. C. Skinner, asking for a loan of only twenty dollars to help this young man begin the practice of dentistry in this country. Although we don't know what the great man's response was to this appeal, Skinner went on to achieve fame in his profession. He was the first dentist ever, in this country, to be appointed to a hospital staff; he established the first free dental clinic for the poor; and he authored the first book on dentistry ever published in America, earning him the title "The Father of American Dental Literature." From a newspaper advertisement of 1794, further information has been gleaned about Skinner's practice: he not only did conventional dentistry, but also supplied missing eyes, ears, noses and legs. This was a forerunner of the contemporary subspecialty of prosthodontics termed "maxillofacial prosthetics". An interesting list of Skinner's services and his fees for each, gives us a good picture of what dentistry was like in Colonial America.

  1. Balloon Measurements of Electric Fields in Thunderstorms: A Modern Version of Benjamin Franklin's Kite

    Science.gov (United States)

    Marshall, T. C.; Stolzenburg, M.

    2006-12-01

    One of Benjamin Franklin's most famous experiments was the kite experiment, which showed that thunderstorms are electrically charged. It is not as commonly noted that the kite experiment was also one of the the first attempts to make an in situ measurement of any storm parameter. Franklin realized the importance of making measurements close to and within storms, and this realization has been shared by later atomspheric scientists. In this presentation we focus on a modern version of Franklin's kite--instrumented balloons--used for in situ measurements of electric field and other storm parameters. In particular, most of our knowledge of the charge structure inside thunderstorms is based on balloon soundings of electric field. Balloon measurements of storm electricity began with the work of Simpson and colleagues in the 1930's and 1940's. The next major instrumentation advances were made by Winn and colleagues in the 1970's and 1980's. Today's instruments are digital versions of the Winn design. We review the main instrument techniques that have allowed balloons to be the worthy successors to kites. We also discuss some of the key advances in our understanding of thunderstorm electrification made with in situ balloon-borne instruments.

  2. TU-A-17A-01: Memorial to Benjamin M. Galkin - Memorial Lecture

    Energy Technology Data Exchange (ETDEWEB)

    Suntharalingam, N [Voorhees, NJ (United States)

    2014-06-15

    This past year Medical Physics lost one of its active members, Benjamin M. Galkin. Ben Galkin was a Past-Treasurer of the AAPM. During his leadership role he played an important part in Securing membership, for the AAPM, in the American Institute of physics. As Treasurer he was also a prime mover in starting the journal, Medical Physics, and served as its business manager in the formative years.Ben Galkin received his Masters Degree at Columbia University in New York, under the mentorship of Dr. Edith Quimby, one of the pioneer Hospital Radiation Physicists in the country. He started his professional career at Jefferson Hospital in Philadelphia, joining Robert Gorson, and remained there until retirement. He served as the institution’s Radiation Safety Officer throughout his career. His research interest was Breast Imaging. He held joint faculty appointments in the Department of Radiology and the Department of Radiation Therapy and Nuclear Medicine, rising up to the rank of Full professor. He was a well respected teacher for the residents in Radiology.

  3. Benjamin Franklin and his glass armonica: from music as therapeutic to pathological.

    Science.gov (United States)

    Finger, Stanley; Zeitler, William

    2015-01-01

    In 1762, Benjamin Franklin, then in London, wrote a letter to a colleague in Italy describing his latest invention, a musical instrument he called the "armonica," which was based on how rubbing a wet finger on the rims of wine glasses could produce musical tones. In contrast to earlier sets of wine glasses that could be tapped or rubbed, Franklin put a set of glass bowls differing in size on a horizontal rod turned by a food treadle, thus freeing both hands for touching the rotating glasses and allowing musicians to play more than two glasses at a time, as well as eliminating the nuisance of water tuning. Franklin played his instrument for pleasure, to manipulate the "passions" (emotions) and to treat melancholia. Nevertheless, late in his lifetime some individuals began to view glass armonica music differently, alleging it could cause nerve damage and mental problems. Here, we look at how Franklin used his glass armonica to manipulate the passions and examine what he must have thought about it supposedly causing health problems. We present Franklin as an empiricist, whose focus was more on results than theories; as an astute student of human behavior understanding the power of charms and other "nonsense"; and as a man of medicine living in an era when much was being attributed to the nerves, even though next to nothing was really known about the underlying nerve force. © 2015 Elsevier B.V. All rights reserved.

  4. Benjamin and Russian Conservatism%本雅明与俄国保守主义

    Institute of Scientific and Technical Information of China (English)

    卢文雅

    2015-01-01

    本雅明对俄国的关注主要表现在两个方面,一是对俄国经典作家作品的阅读和评论,二是通过访问莫斯科,对革命烈火中的苏联的认识。其间他与俄国保守主义不期而遇,并在著述中给予这种倾向以暧昧的批评,这在一定程度上也反映了他深刻而复杂的艺术观与历史观。%Benjamin'attention to Russia is mainly manifested in two aspects.One is his reading of Russian classic writers and his comments on them, and the other is his understanding of Soviet in the wake of the revolution by visiting Moscow.In the meanwhile he got acquainted with Russian Conservatism by chance and gave this trend an ambiguous criticism, which in part reflected his profound and complicated views of art and history.

  5. Looking back, looking forward: a reexamination of Benjamin Wolstein's interlock and the emergence of intersubjectivity.

    Science.gov (United States)

    Bonovitz, Christopher

    2009-06-01

    In this paper the author takes a close look at Benjamin Wolstein's chapter, 'Therapy', from his book, Countertransference, published in 1959. This chapter contains a discussion of what he refers to as the interlock between analyst and patient, or today what we might describe as transference/countertransference enactment. The author shows how Wolstein's concept of the interlock and its relation to the analyst's countertransference was radical and innovative for its time. Wolstein's notion of a transference/countertransference interlock, along with the seminal contributions of Ferenczi and some of the early interpersonal theorists, anticipates the complexities of a two-person psychology and the entanglement which can occur from the intermingling of unconscious processes of analyst and patient in the experiential field. The author highlights three main ideas. First, the author provides a brief review of enactment with an emphasis on the role of the analyst's participation as conceptualized by the various theoretical perspectives. An historical context is given for Wolstein's clinical theorizing. Second, the author explicates Wolstein's concept of the interlock, with particular attention to the processes involved which account for the complexities it presents. Third, the author examines the 'working through' process, including the emergence of intersubjectivity in the resolution of the interlock. The author shows throughout Wolstein's emphasis on the influence of the analyst's personal psychology, mutuality, and intersubjectivity, all of which anticipated the gradual interpersonalization of psychoanalysis across the various schools of thought.

  6. Eurydice at Euston?: Walter Benjamin and Marc Augé Go Underground

    Directory of Open Access Journals (Sweden)

    Graeme Gilloch

    2014-01-01

    Full Text Available Taking as its point of departure Walter Benjamin’s repeatedly unsuccessful attempt to give spatial form to his past, this paper suggests that it is perhaps the contemporary French anthropologist, Marc Augé, who provides the most appropriate envisioning of a ‘map of memories’ in his brief writings on the Parisian métro system. For Augé, the labyrinthine subway network constitutes nothing less than a ‘memory machine’ in which lines and station names serve as mnemonics, recalling long-forgotten childhood encounters and experiences. Mirroring the cityscape above, places themselves unexplored, unknown, the serried toponyms of the métro become an incantation summoning forth the shades of the past. As Augé points out, those stations that provide opportunities to change lines are felicitously termed ‘correspondences’, a Baudelairean term that fascinated Benjamin and informed his key historiographical notion of the ‘dialectical image,’ the intersection and mutual illumination of past and present moments. For me, Augé’s highly suggestive reflections bring to mind my own memories of a London childhood around 1970. Looking at the London underground map today, I cannot but see the sites of many past meetings and partings, dots connected by lines forming complex figures, constellations of memory.

  7. Persona-lly Appealing: Benjamin Franklin’s Poor Richard and Authorial Self-Representation

    Directory of Open Access Journals (Sweden)

    Patricia F. Tarantello

    2016-06-01

    Full Text Available While scholarship on Benjamin Franklin’s Autobiography describes his use of persona in nuanced terms, scholarship on Franklin’s earlier writings tends to characterize his use of persona as simply a device he used to eliminate personal details from his texts. This article, focused on Franklin’s Poor Richard persona, argues that he conceived of literary persona not simply as a tool to protect his anonymity, but also as a means of self-promotion and self-representation. Franklin used Poor Richard to make a space for himself in the literary marketplace, build a readership for the almanac, and create a positive public reputation for himself. Franklin’s early experiments in performing sincerity and authenticity through an invented personality prefigure the performances of identity he would deploy through his authorial persona in The Autobiography. Thus, by examining Franklin’s construction of identity in Poor Richard’s Almanack, we learn more about how he crafted a public identity for himself.

  8. As siglas em cores no Trabalho das passagens, de W. Benjamin

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    Willi Bolle

    1996-08-01

    Full Text Available Do que era para ser seu opus magnum, o Trabalho das passagens, concebido como uma história social da cidade de Paris no século XIX, W. Benjamin elaborou em 1938 um modelo, que ficou inacabado, mas do qual existe um plano de construção integral, reencontrado em 1981 na Bibliothèque Nationale da França. Com base no deciframento desses manuscritos, 80% inéditos, é apresentada aqui uma síntese do Modelo das passagens, em forma de uma constelação das 30 siglas em cores que simbolizam as 30 categorias construtivas. O trabalho se baseia na hipótese de que se trata de uma escrita esotérica com valores estéticos, semânticos e estruturadores próprios: recurso mimético destinado a ler o texto difícil da metrópole moderna. As siglas são analisadas sob sete aspectos: oficina de historiografia, escrita fisiognômica, visualização do tempo, história como cartografia, quadros de mentalidade, alegorização e radiografia de época. Atuando na intersecção entre tradições conceituais e pictográficas, as siglas constituem na historiografia um gênero de fronteira.

  9. Representation and function of characters from Greek antiquity in Benjamin Britten’s Death in Venice

    Directory of Open Access Journals (Sweden)

    B. Spies

    2002-08-01

    Full Text Available Lack of insight into Greek antiquity, more specifically the nature of classical tragedy and mythology, could be one reason for the negative reception of Benjamin Britten’s last opera Death in Venice. In the first place, this article considers Britten’s opera based on Thomas Mann’s novella as a manifestation of classical tragedy. Secondly, it is shown how mythological characters in Mann’s novella represent abstract ideas2 in Britten’s opera, thereby enhancing the dramatic impact of the opera considerably. On the one hand it is shown how the artist’s inner conflict manifests itself in a dialectic relationship between discipline and inspirat ion in Plato’s Phaedrus dialogue that forms the basis of Aschenbach’s monologue at the end of the opera. The conflict between Aschenbach’s rational consciousness and his irrational subconscious, on the other hand, is depicted by means of mythological figures, Apollo and Dionysus. Two focal points in the opera, namely the Games of Apollo at the end of Act 1 and the nightmare scene which forms the climax of the opera in Act 2, are used to illustrate the musical manifestation of this conflict.

  10. Beyond the Mohawk Warrior: Reinterpreting Benjamin West’s Evocations of American Indians

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    Julia A. Sienkewicz

    2009-11-01

    Full Text Available This essay offers a reinterpretation of the narratives in John Galt’s 'The Life and Studies of Benjamin West' (1816 that introduce the artist’s encounters with, or evocations of, American Indians. This study grapples, in particular, with the iconic status of the narrative in which the young artist, newly arrived in Rome from the British Colony of Pennsylvania, is said to have exclaimed ‘My God, how like it is to a young Mohawk warrior!’ when he first encountered the 'Apollo Belvidere'. It questions whether West actually did liken the 'Apollo Belvidere ' to a Mohawk warrior in 1760, and instead resituates the narrative within concerns of transatlantic audience and international politics in 1816. Rather than the naïve exclamation of a provincial visitor to a European metropolis, this article contends that West’s remark, at least as retold within Galt’s narrative, was the calculated reflection of a cosmopolitan intellectual on matters of intercultural and transatlantic concern.

  11. Taktile Rezeption und lebensweltliche Umsicht. Film und Stadterfahrung bei Benjamin und Heidegger

    Directory of Open Access Journals (Sweden)

    Christian Ferencz-Flatz

    2010-06-01

    Full Text Available In his famous essay, The Work of Art in the Age of Mechanical Reproduction, Walter Benjamin compares the daily experience of buildings with the perception of films. His comparison relies on the peculiar concept of “tactile reception“, he opposes to the optically oriented traditional attitude towards art. The concept encompasses two essential traits: on the one hand, it designates the fact that films do not require a contemplative, focused attention, but a habitual, distracted approach, similar to that by which we perceive buildings in our everyday life-world. On the other hand, Benjamin’sconcept points to a particular “chock-effect” produced by cinematic experience, through its constant change of perspectives and points of view. By this, it challenges precisely the same form of ambient perception required in numerous situations of our daily life in the modern city. The two determinations sketch out a unitary concept that shows obvious similarities to the phenomenological idea of a “life-worldly circumspection” (Umsicht, a specific manner of sight guiding everyday practical life.

  12. Controlling Effects of Several Fungicides on Chlorophytum comosum Sclerotium roelfsii Sacc%几种杀菌剂对吊兰白绢病的防治效果

    Institute of Scientific and Technical Information of China (English)

    王丽; 王玲玲; 刘晓娇

    2013-01-01

    [Objective]The aim of this study was to screen better fungicides for controlling Chlorophytum comosum Sclerotium roelfsii Sacc. [ Method] With PVC potted Chlorophytum comosum as material, five kinds of fungicides on controlling Sclerotium roelfsii were observed by foliar spraying fungicides. [ Result ] The control effects of dimetachlone, difenoconazole, propiconazole and diniconazole for Sclerotium roelfsii are better than hymexazol. Among which, the control effect of diniconazole can reach 91. 90%. Difenoconazole controls Sclerotium roelfsii most rapidly, up to 83.10% after the first medication. [ Conclusion] The study provides theoretical basis for controlling Chlorophytum comosum Sclerotium roelfsii.%[目的]筛选出防治吊兰白绢病的有效杀菌剂.[方法]以PVC盆栽吊兰为材料,采用叶面喷药方式,进行了5种杀菌剂防治吊兰白绢病的药效试验.[结果]菌核净、世高、丙环唑和烯唑醇对吊兰白绢病的防治效果优于恶霉灵,其中烯唑醇的防治效果最佳,达到91.90%;世高对吊兰白绢病的防治效果最快,1次用药后防效可达83.10%.[结论]为吊兰白绢病的防治提供了理论依据.

  13. PENGARUH KONSENTRASI ANTIMIKROORGANISME, MEDIA FERMENTASI, DAN WAKTU INKUBASI TERHADAP PERTUMBUHAN Absidia corymbifera (Cohn Sacc. & Trotter DARI JAMUR ENDOFIT Fusarium nivale (Fr. Ces.

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    Suciatmih Suciatmih

    2012-12-01

    Full Text Available Fusarium nivale (Fr. Ces., an endophytic fungi from Dendrobium crumenatum Sw. (pigeon orchidshowed an antimicroorganism activity against Absidia corymbifera (Cohn Sacc. & Trotter, causing of human zygomycosis. The aim of this study is to find out the effect of concentration of antimicroorganism agent, fermentation medium, and incubation time to control A. corymbifera by F. nivale; and to make curve of F. nivale growth and curve of its antimicrobial production. Five different concentrations of antimicroorganism agent (0, 75, 150, 225, and 300 ul, four different fermentation media (PotatoDextrose Yeast, Tauge Extract Broth , Kedelai Extract Broth , and Jagung Extract Broth, and eight different incubation times (0, 1, 2, 3, 4, 5, 6, and 7 days were chosen for this experiment. Parameters of the study were change of filtrate pH, dry weight of mycelial cell of F. nivale, and percentage inhibition of mycelial growth of A. corymbifera. The results indicated that antimicroorganism agent concentration of 150 ul applied and potato dextrose yeast medium were the most effective to inhibit A.corymbifera. The antimicroorganism agent was produced during growth of the fungi. The production of antimicroorganism agent coinced with the decrease in pH from 6.0 to 4.81; and the increase in pH from4,81 to 7.24-8.01. A optimum activity of antimicroorganism agent (31,23 during growth of fungi occurred on the 2th day of incubation. Keywords: A. corymbifera; aktivitas antimikroorganisme; F. nivale; persentase hambatan pertumbuhan miselium A. corymbifera

  14. Sleep and Behavioral Correlates of Napping among Young Adults: A Survey of First-Year University Students in Madrid, Spain

    Science.gov (United States)

    Vela-Bueno, Antonio; Fernandez-Mendoza, Julio; Olavarrieta-Bernardino, Sara; Vgontzas, Alexandros N.; Bixler, Edward O.; de la Cruz-Troca, Juan Jose; Rodriguez-Munoz, Alfredo; Olivan-Palacios, Jesus

    2008-01-01

    Objective: Between November 2002 and March 2003, the authors assessed the prevalence and correlates of napping among Spanish university students. Participants: The sample comprised 1,276 first-year university students; the mean age was 18.74 [plus or minus] 1.24 years, and 35.45% were men. Methods: The study was cross-sectional, and the students…

  15. The Role of Implied Motion in Engaging Audiences for Health Promotion: Encouraging Naps on a College Campus

    Science.gov (United States)

    Mackert, Michael; Lazard, Allison; Guadagno, Marie; Hughes Wagner, Jessica

    2014-01-01

    Objective: Lack of sleep among college students negatively impacts health and academic outcomes. Building on research that implied motion imagery increases brain activity, this project tested visual design strategies to increase viewers' engagement with a health communication campaign promoting napping to improve sleep habits. Participants:…

  16. NAP1-Assisted Nucleosome Assembly on DNA Measured in Real Time by Single-Molecule Magnetic Tweezers

    NARCIS (Netherlands)

    Vlijm, R.; Smitshuijzen, J.S.J.; Lusser, A.; Dekker, C.

    2012-01-01

    While many proteins are involved in the assembly and (re)positioning of nucleosomes, the dynamics of protein-assisted nucleosome formation are not well understood. We study NAP1 (nucleosome assembly protein 1) assisted nucleosome formation at the single-molecule level using magnetic tweezers. This m

  17. NAP1-Assisted Nucleosome Assembly on DNA Measured in Real Time by Single-Molecule Magnetic Tweezers

    NARCIS (Netherlands)

    Vlijm, R.; Smitshuijzen, J.S.J.; Lusser, A.; Dekker, C.

    2012-01-01

    While many proteins are involved in the assembly and (re)positioning of nucleosomes, the dynamics of protein-assisted nucleosome formation are not well understood. We study NAP1 (nucleosome assembly protein 1) assisted nucleosome formation at the single-molecule level using magnetic tweezers. This

  18. Optimizing sleep/wake schedules in space: Sleep during chronic nocturnal sleep restriction with and without diurnal naps

    Science.gov (United States)

    Mollicone, Daniel J.; Van Dongen, Hans P. A.; Dinges, David F.

    2007-02-01

    Effective sleep/wake schedules for space operations must balance severe time constraints with allocating sufficient time for sleep in order to sustain high levels of neurobehavioral performance. Developing such schedules requires knowledge about the relationship between scheduled "time in bed" (TIB) and actual physiological sleep obtained. A ground-based laboratory study in N=93 healthy adult subjects was conducted to investigate physiological sleep obtained in a range of restricted sleep schedules. Eighteen different conditions with restricted nocturnal anchor sleep, with and without diurnal naps, were examined in a response surface mapping paradigm. Sleep efficiency was found to be a function of total TIB per 24 h regardless of how the sleep was divided among nocturnal anchor sleep and diurnal nap sleep periods. The amounts of sleep stages 1+2 and REM showed more complex relationships with the durations of the anchor and nap sleep periods, while slow-wave sleep was essentially preserved among the different conditions of the experiment. The results of the study indicated that when sleep was chronically restricted, sleep duration was largely unaffected by whether the sleep was placed nocturnally or split between nocturnal anchor sleep periods and daytime naps. Having thus assessed that split-sleep schedules are feasible in terms of obtaining physiological sleep, further research will reveal whether these schedules and the associated variations in the distribution of sleep stages may be advantageous in mitigating neurobehavioral performance impairment in the face of limited time for sleep.

  19. Resonances in the sup 22 Na(p,. gamma. ) sup 23 Mg reaction

    Energy Technology Data Exchange (ETDEWEB)

    Seuthe, S.; Rolfs, C.; Schroeder, U.; Schulte, W.H.; Somorjai, E.; Trautvetter, H.P.; Waanders, F.B. (Muenster Univ. (Germany, F.R.). Inst. fuer Kernphysik); Kavanagh, R.W. (California Inst. of Tech., Pasadena (USA)); Ravn, H. (European Organization for Nuclear Research, Geneva (Switzerland)); Arnould, M.; Paulus, G. (Universite Libre de Bruxelles (Belgium). Inst. d' Astronomie et d' Astrophysique)

    1990-08-06

    The reaction {sup 22}Na(p, {gamma}){sup 23}Mg has been investigated in the energy range E{sub p}=0.17-1.2.9 MeV using a {sup 22}Na implanted target, a D{sub 2}O threshold detector, and NaI(Tl) and Ge detectors. Resonances in this reaction have been observed for the first time at E{sub p}=290, 457, 503, 613, 740 and 796 keV. The strengths of these resonances, and upper limits on the strengths for expected resonances in the energy range covered, are given. The stellar reaction rates deduced from the present work are about one order of magnitude than previous theoretical estimates; they are however significantly higher than the upper limits from one previous measurement. Some astrophysical consequences are discussed. (orig.).

  20. Notas sobre Siegfried Kracauer, Walter Benjamin e a Paris do Segundo Império: pontos de contato Notes on Siegfried Kracauer, Walter Benjamin and Second Empire Paris: affinity points

    Directory of Open Access Journals (Sweden)

    Carlos Eduardo Jordão Machado

    2006-01-01

    Full Text Available Trata-se de mostrar a originalidade crítica de Siegfried Kracauer diante da experiência da modernidade estética e de discutir as afinidades estético-teóricas de Kracauer e Benjamim ao analisar a Paris da segunda metade do século XIX, o Segundo Império, em particular, como fenômeno originário da sociedade de massas, da indústria cultural e do entretenimento e, sobretudo, do nazi-fascismo. Kracauer durante seu exílio parisiense (1933-41 escreveu uma "biografia da sociedade": Jacques Offenbach e a Paris de sua época (Jacques Offenbach und das Paris seiner Zeit. Obra inovadora pelo seu enfoque da história do presente e com pontos de contatos com a Obra das Passagens (Passagen-Werk ou Paris capital do século XIX de Walter Benjamin.I present Kracauer's original critical analysis of aesthetic modernity, and discuss the theoretical and aesthetic affinities between Kracauer and Walter Benjamin in their analyses of Paris during the second half of the Twentieth Century; the Second Empire as the original embodiment of mass society, with its cultural and entertaining industries; and, above all, the emergence of fascism and National Socialism. During his Parisian exile (1933-1941, Kracauer wrote a "social biography": Orpheus in Paris: Offenbach and the Paris of His Time (New York, 1938, an innovative work with many affinity points with Walter Benjamin's The Work of the Arcades, or Paris as the Capital of the XIXth Century.

  1. De Lessing a Benjamin: la otra Ilustración (Experiencia e individuo I

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    Andreu, Agustín

    1991-10-01

    Full Text Available Not available.

    G.E. Lessing, con su lanzamiento de un espinosismo de corte leibníziano, intentó ofrecer a la Ilustración alemana un planteamiento que, desde el sentimiento y la historia, desde la tradición y la religiosidad, indicaba en continuidad caminos concretos de emancipación y de entendimiento universal. Tanto en sus obras teatrales (principalmente en Natán el Sabio como en sus breves escritos teóricos (en particular en la educación del género humano se plantea el tema de la transformación de las sociedades por la transformación de los individuos, basada en la experiencia propia de cada uno, que va convirtiendo verdades de la tradición y la religión en verdades de razón. Ya Lessing, que vio y calló, pero sobre todo Mendelssohn y Salomón Maimon entre otros, advirtieron que los presupuestos de la antropología kantiana imprimían a la vida e historia alemanas otra dirección -al dividir al hombre en intuición sensible y razón, y al fundamentar la Ética en la postulación abstracta. Gershom Scholem que, de los orígenes de la Alemania moderna supo recoger ese temblor de una predicción temprana, recibió en 1918 de manos del mismo Walter Benjamin uno de los escritos más lúcidos del s, XX por lo que hace a la crítica de la insuficiente Ilustración alemana «y tal vez de la europea en general». Tal insuficiencia se revelaba sobre todo en la estrechez del concepto kantiano de experiencia, que dejaba al individuo flotando en el vacío. Un individuo basado en una clase de certeza y seguridad indirectas y mediatas, quedaba expuesto a todos los peligros de interferencia y mecanización y acabaría privado de su capacidad de experiencia propia y por tanto de saber y de contar lo que «verdaderamente» le pasa. Sobre el programa de la filosofía futura es el esbozo donde Benjamin presenta los presupuestos de una emendatio experientiae como fundamento de una nueva teoría del conocimiento y de

  2. Zajištěné napájení vlastní spotřeby parní elektrárny

    OpenAIRE

    Tomášek, Petr

    2009-01-01

    Tato práce se zabývá problematikou zajištěného napájení. Pod pojmem zajištěného napájení se skrývá soubor technologických celků, které zajišťují napájení zařízení podílejících se na bezpečném odstavení elektrárny v případě výpadku napájení z běžného napájecího zdroje. Práce je členěna do dvou základních částí – teoretické a praktické. Teoretická část pojednává o možnostech realizace zajištěného napájení. Je zde proveden výčet jednotlivých zařízení, která mohou být v sekci zajištěného napájení...

  3. Modeling the Climate Response of the Laki Eruption - Benjamin Franklin was Right

    Science.gov (United States)

    Oman, L.; Robock, A.; Stenchikov, G. L.; Thordarson, T.

    2006-12-01

    Benjamin Franklin was one of the first to recognize the connections between volcanic eruptions and climate. Shortly after the 1783-1784 Laki eruption, he postulated that the dry fog over much of Europe was likely caused by a volcanic eruption in Iceland, that the winds would have transported the gas and aerosol over much of the Northern Hemisphere, and that the cold winter of 1783-84 was caused by this dry fog. We used the NASA Goddard Institute for Space Studies ModelE climate model to examine the chemical conversion and transport of SO2 gas from the Laki eruption (64.10°N, 17.15°W) and used the resulting aerosol concentrations to model the climate response. Using our calculated aerosol distribution, we conducted a 10-member ensemble simulation with ModelE coupled to a q-flux mixed-layer ocean. The mean of these runs reproduced the extensive radiative cooling (-1 to -3°C) that occurred during the summer of 1783 across much of Asia, Canada, and Alaska and produced a strong dynamical effect in summer as the Laki eruption forces a significant weakening of the African and India monsoon circulations. This is seen in cloud cover and precipitation anomalies and resulted in significant warming (1 to 2°C) from the Sahel of Africa to northern India. This is a very robust result and has been observed after the last 3 large high-latitude volcanic eruptions, Eldgjá (939), Katmai (1912), and Laki, all of which produced large reductions in the flow of the Nile River. In the winter of 1783-1784 our model reproduced the significant negative temperature anomalies over the Northeastern United States, and smaller cooling produced over Europe. That winter was one of the coldest on record over these areas and our model results confirm that Laki could have been partially responsible for these anomalies.

  4. WALTER BENJAMIN Y GEORGES SOREL: ENTRE EL MITO DE LA HUELGA GENERAL Y UNA POLÍTICA DE MEDIOS PUROS

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    Carlos Pérez López

    2015-04-01

    Full Text Available En su ensayo Para una crítica de la violencia, Walter Benjamin reivindica el fenómeno social de la huelga general revolucionaria teorizada por Georges Sorel en su obra Reflexiones sobre la violencia, como una figura ejemplar de lo que sería un “medio puro de la política”, al margen de cualquier forma legitimada de poder. En este marco, pocos comentadores contemporáneos advierten una discordancia conceptual entre ambos filósofos: para Sorel, la huelga revolucionaria es un mito social, mientras que el mito, categoría esencialmente negativa en Benjamin, describe la violencia que aprisiona la vida y que se traduce en una forma de poder político superior. En este artículo quisiéramos demostrar esta discordancia conceptual para examinar en seguida cómo ha sido comentada por otros pensadores contemporáneos. La filosofía de la historia, la posibilidad de una acción política ética y la temporalidad mesiánica aparecen en el horizonte teórico que emparenta a estos filósofos y por el cual podría descifrarse su impasse conceptual. Esto se confirma si se despliega la idea de un “medio puro de la política”, pista que Benjamin ofrece sin profundizar y sobre la cual reenvía al pensamiento de un filósofo poco explorado, Erich Unger. En la última parte de este artículo desarrollaremos las claves dadas por Unger, que entran justamente en sintonía con la mención de la huelga general como medio puro de la política.

  5. Antropologia e filosofia: estética e experiência em Clifford Geertz e Walter Benjamin

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    Relivaldo Pinho de Oliveira

    2012-06-01

    Full Text Available Este artigo estuda as concepções de estética e experiência de Clifford Geertz e Walter Benjamin como possibilidades argumentativas e metodológicas para pensar a realidade e suas formas estéticas. Utiliza-se para isso as discussões metodológicas de Geertz, especialmente a respeito do lugar da estética e de sua relação com os demais âmbitos do humano, que encetaram uma nova forma de concebê-los para a etnografia e antropologia de modo geral, e os estudos de Benjamin a respeito da estética como expressão fisionômica de uma época, de determinada realidade, especialmente os que se referem sobre a modernidade. Constata-se essa possibilidade a partir da observação de que a estética e a experiência, nos autores, são tomadas como dimensões da realidade que se relacionam, não de modo mecânico, e sim como âmbitos que atravessam a realidade, os artefatos estéticos, os discursos, e esses assim devem ser observados.This article study the conceptions of aesthetics and experience of Clifford Geertz and Walter Benjamin as argumentative and methodological possibilities for thinking reality and its aesthetic forms. Uses for this Geertz's methodological discussions, especially regarding the place of aesthetics and its relation to other spheres of the human, which has embarked on a new way of conceiving them to ethnography and anthropology in general, and studies Benjamin about the aesthetics and physiognomical expression of an era, a certain reality, especially those concerning about modernity. There is that possibility from the observation that the aesthetics and experience, in the authors, are taken as the dimensions of reality are related, not mechanically, but as areas that cross the reality, the aesthetic artifacts, the speeches, and so these must be observed.

  6. Benjamin-Ono-Burgers-MKdV Equation for Algebraic Rossby Solitary Waves in Stratified Fluids and Conservation Laws

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    Hongwei Yang

    2014-01-01

    Full Text Available In the paper, by using multiple-scale method, the Benjamin-Ono-Burgers-MKdV (BO-B-MKdV equation is obtained which governs algebraic Rossby solitary waves in stratified fluids. This equation is first derived for Rossby waves. By analysis and calculation, some conservation laws are derived from the BO-B-MKdV equation without dissipation. The results show that the mass, momentum, energy, and velocity of the center of gravity of algebraic Rossby waves are conserved and the presence of a small dissipation destroys these conservations.

  7. The musical magic of ambiguity in Benjamin Britten’s Death in Venice

    OpenAIRE

    B.M. Spies

    2001-01-01

    This essay investigates the blurred musical significations in Benjamin Britten’s Death in Venice, an opera based on Thomas Mann’s important novella Der Tod in Venedig. The discussion of multiple meanings links up with two categories of ambiguity as set out by William Empson in his Seven Types of Ambiguity, that is two or more meanings which do not agree among themselves, but combine to make clear a more complicated state of mind, and two opposite meanings that show a fundamental division in t...

  8. The Spanish Inquisition’s Attack on Liberalism. The Indictment against Benjamin Constant’s Principes de Politique

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    María Luisa SÁNCHEZ-MEJÍA

    2014-02-01

    Full Text Available In 1816, after close examination, the Spanish Inquisition forbade Benjamin Constant’s Principes de Politique, the most representative work of liberal ideology of its day. A careful study of the official indictment shows that in the early 19th c. the concepts of natural law and of the general will introduced by the Enlightenment were still being countered with the same arguments which had been used in the preceding century. Nonetheless, the consequences for Spain of the French Revolution would force the Inquisition to face the challenges posed by liberalism in Europe.

  9. The Diegesis of Benjamin Button: A Method for Comparing Literature and Film (La diégesis de Benjamin Button: método para comparar literatura y cine

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    Joe Montenegro Bonilla

    2014-11-01

    Full Text Available This article proposes a specific structuralist methodology that may help organize the analysis of the relationship between literature and cinema. Through the instance of F. Scott Fitzgerald’s short story “The Curious Case of Benjamin Button” and David Fincher’s film adaptation of it, a focus on the comparable diegetic structures of a narrative cinematic text and the literary work on which it is based is offered, along with an exploration of the semiotic codes that support their comparative textual analyses. Este artículo propone una metodología estructuralista específica que posibilita organizar el estudio para analizar la relación entre la literatura y el cine. Utilizando como ejemplo el cuento de F. Scott Fitzgerald “El curioso caso de Benjamin Button” y su adaptación al cine de David Fincher, se ofrece un enfoque en las estructuras diegéticas comparables entre un texto cinematográfico narrativo y la obra literaria en la cual se basa; además de una exploración de los códigos semióticos que sustentan los análisis textuales comparados de ambos textos.

  10. W. Benjamin, Nietzsche y Sloterdijk; Psicopolítica, escatología de la 'promesa' y dialéctica del entusiasmo

    OpenAIRE

    Isaac Moctezuma Perea

    2008-01-01

    The promise is the meeting place between past and future into the present. Benjamin felt as if the historical action of a class depends largely on the conception that it is in history, it also depends largely on the ability of this class has to pledge, as it thinks Sloterdijk, is the promise which communicate the most eminent human capabilities. This essay aims to reflect on the usefulness and harm of the dimensions of the promise into the philosophies of Benjamin and Sloterdijk for life.

  11. La dilemática relación historia-memoria: ¿Walter Benjamin como un filósofo memorialista?

    OpenAIRE

    Zeitler Varela, Mariela

    2011-01-01

    En las últimas décadas la figura de Walter Benjamin ha sido extensamente recuperada desde muy diversos ámbitos, como la crítica literaria, la filosofía política, la estética, sólo por citar algunos. En este trabajo nos centraremos en su acercamiento a la filosofía de la historia, o mejor dicho, en problematizar lo que muchos de sus comentadores consideran ha sido el aporte benjaminiano a esta rama de la filosofía: nos referimos a la cuasi exclusiva visión de Benjamin como un autor memorialist...

  12. Ondokuzuncu yüzyılda Anadolu'da bir bitki toplayıcısı: Benjamin Balansa (1825-1891)

    OpenAIRE

    Baytop, Asuman; Nicolas, Michele

    2011-01-01

    A plant collector in Anatolia in the 19th century: Benjamin Balansa (1825-1891) Asuman Baytop & Michèle Nicolas Benjamin Balansa (1825-1891) was a French traveler-naturalist attached to the Muséum National d'Histoire Naturelle at Paris. As a explorer botaniste, cultivator, interpriser, producer, he dedicated more than 40 years of his life to scientific travels far from his country. Between 1854 and 1866, he was in Anatolia where he herborized in the West, Central, South and ...

  13. Versailles et Philadelphie : Benjamin Franklin et André Michaux

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    James E. McClellan III

    2011-08-01

    Full Text Available On ne peut véritablement parler de « politique scientifique », ni pour les colonies anglaises de l’Amérique, ni pour la nouvelle nation américaine indépendante de la fin du xviiie siècle. Néanmoins, pour la cour de Versailles et pour la politique scientifique française de l’époque – la plus développée du moment – cette région fut d’une grande importance.Dans cette intervention, l’exemple bien connu de Benjamin Franklin ne sera que brièvement évoqué, en tant que scientifique et homme politique, pour les liens qu’il sut tisser entre Versailles et Philadelphie. Le cas moins bien connu, mais plus révélateur, d’André Michaux (1746-1802, botaniste du roi envoyé aux États-Unis en 1785 et chargé de renvoyer en France les semis d’arbres américains, retiendra en revanche davantage notre attention.Pour comprendre la mission d’André Michaux pendant son séjour sur le sol américain jusqu’en 1796, il faut le situer dans le contexte de ce que François Regourd et moi-même avons nommé la machine coloniale, cette nébuleuse institutionnelle scientifique, technique et administrative, dévouée à l’expansion coloniale française. Cette machine intégrait toute une gamme d’institutions à son fonctionnement, y compris, dans le cas d’André Michaux, la Maison et les Bâtiments du roi à Versailles, les jardins du Trianon, le Jardin du roi à Paris, et le Jardin royal d’acclimatation à Rambouillet. Les deux jardins fondés par Michaux dans le New Jersey et en Caroline du Sud firent également partie, à leur manière, de cette machine coloniale et de la politique scientifique de la monarchie française.

  14. Crises convulsivas associadas à hipóxia neonatal e o potencial uso terapêutico do neuropeptídeo NAP = Hypoxia-associated neonatal seizures and potential therapeutic use of neuropeptide NAP

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    Greggio, Samuel

    2008-01-01

    Conclusões: apesar dos indícios positivos da aplicação do peptídeo NAP em modelos animais de neuropatologias e de seu sucesso preliminar em ensaios clínicos, são necessárias pesquisas adicionais a fim de entender particularidades desse composto, tais como mecanismo de ação e viabilidade clínica para o tratamento das crises convulsivas neonatais

  15. The lives of an American life - The Autobiography of Benjamin Franklin and the idea of personal identity

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    Joyce E. Chaplin

    2015-12-01

    Full Text Available recorrendo aos campos da história dos impressos e da história da ciência - dois campos de importância indiscutível para entender Benjamin Franklin, o impressor da Filadélfia, e Benjamin Franklin, o famoso experimentador elétrico - este ensaio sugerirá que as memórias de Franklin são evidência de que ele pensou sobre si mesmo como encarnado em ações (como ele tinha se apresentado ao mundo, através de experimentos científicos e como identificado em relação a outras pessoas, como ele tinha sido por muito tempo, como um colaborador em diversos projetos e como um correspondente. Isso é diferente do seu sentido desencarnado e individualista que a maioria das edições de sua autobiografia, como uma simples narrativa, lhe deram. Edições mais complexas e com diversos textos podem ser ao menos igualmente válidas, sobretudo para mostrar como ideias de identidade pessoal, nesse ponto da história, eram coletivas e encarnadas.

  16. Aberrations in the Body and in the Body Politic: The Eighteenth-Century Life of Benjamin Lay, Disabled Abolitionist

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    Nathaniel Smith Kogan

    2016-08-01

    Full Text Available This article re-evaluates traditional interpretations and presentations of the (in-famous eighteenth century Quaker abolitionist, Benjamin Lay, by arguing that his physical disability provided the foundation for his advocacy to eliminate slaveholding amongst his fellow Friends. The article will first establish the historical context Benjamin Lay's life and transatlantic travels to explain the roots of his abolitionist advocacy. Then, this article will analyze Lay's radical abolitionism both within the context of eighteenth-century Quaker antislavery and through the lens of disability history. This methodological approach will reveal that Lay displayed a clear awareness of his non-conforming body and the ways that its marginalizing effects empowered him to radically challenge the Quaker slaveholding establishment. The article will then analyze Lay's All Slave-Keepers, Apostates and argue that Lay rhetorically constructed his own disability in this text through both a religious lens and through the emerging Enlightenment concept of human aberrance and hierarchy. Finally, the article will conclude by analyzing some of the earliest visual representations of Lay's strange body and contend that the context in which they were commissioned and circulated forged a positive connection between Lay's disability and his abolitionist accomplishments.

  17. UNTERWEGS-­‐‑SEIN IN EUROPA ZWISCHEN VERGANGENHEIT UND ZUKUNFT. BENJAMINS UND BOBROWSKIS „WANDERER“

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    Maria Behre

    2015-12-01

    Full Text Available In his Denkbilder, the Jewish philosopher and homme de lettre Walter Benjamin describes scenes from European metropolises. He offers a glance at quite heterogeneous and freely chosen life styles of the turbulent nineteen-twenties to sketch a possible future for Europe. Today’s reader of the Denkbilder can hardly suppress the memory of a political and personal crisis, namely that of Benjamin’s flight across the Pyrenees, which ended in the Spanish harbour town Portbou. In the poem Der Wanderer, the writer Johannes Bobrowski, a resident of East Berlin, captures the life of a wanderer who depends on the hospitality of others, because he is either persecuted or his freely chosen lifestyle requires him to roam about. For both authors, travelling becomes a substitute for “Heimat” and also a way of life that represents the future of Europe. This forward-looking attitude is based on the experience of cataclysmic events that have been memorably expressed in highly literate apocalyptic images. The writer and graphic designer Christoph Meckel emphasizes how life rises out of ruins only to return to them, by embedding the lyrical process in Eastern European villages, thereby creating a country for which Bobrowski had chosen the mythological name “Sarmatia”, which stands for a messianic utopian vision shared by Benjamin and others.

  18. The histone chaperones Nap1 and Vps75 bind histones H3 and H4 in a tetrameric conformation.

    Science.gov (United States)

    Bowman, Andrew; Ward, Richard; Wiechens, Nicola; Singh, Vijender; El-Mkami, Hassane; Norman, David George; Owen-Hughes, Tom

    2011-02-18

    Histone chaperones physically interact with histones to direct proper assembly and disassembly of nucleosomes regulating diverse nuclear processes such as DNA replication, promoter remodeling, transcription elongation, DNA damage, and histone variant exchange. Currently, the best-characterized chaperone-histone interaction is that between the ubiquitous chaperone Asf1 and a dimer of H3 and H4. Nucleosome assembly proteins (Nap proteins) represent a distinct class of histone chaperone. Using pulsed electron double resonance (PELDOR) measurements and protein crosslinking, we show that two members of this class, Nap1 and Vps75, bind histones in the tetrameric conformation also observed when they are sequestered within the nucleosome. Furthermore, H3 and H4 trapped in their tetrameric state can be used as substrates in nucleosome assembly and chaperone-mediated lysine acetylation. This alternate mode of histone interaction provides a potential means of maintaining the integrity of the histone tetramer during cycles of nucleosome reassembly.

  19. Growth of Campylobacter jejuni on nitrate and nitrite: electron transport to NapA and NrfA via NrfH and distinct roles for NrfA and the globin Cgb in protection against nitrosative stress.

    Science.gov (United States)

    Pittman, Marc S; Elvers, Karen T; Lee, Lucy; Jones, Michael A; Poole, Robert K; Park, Simon F; Kelly, David J

    2007-01-01

    Pathways of electron transport to periplasmic nitrate (NapA) and nitrite (NrfA) reductases have been investigated in Campylobacter jejuni, a microaerophilic food-borne pathogen. The nap operon is unusual in lacking napC (encoding a tetra-haem c-type cytochrome) and napF, but contains a novel gene of unknown function, napL. The iron-sulphur protein NapG has a major role in electron transfer to the NapAB complex, but we show that slow nitrate-dependent growth of a napG mutant can be sustained by electron transfer from NrfH, the electron donor to the nitrite reductase NrfA. A napL mutant possessed approximately 50% lower NapA activity than the wild type but showed normal growth with nitrate as the electron acceptor. NrfA was constitutive and was shown to play a role in protection against nitrosative stress in addition to the previously identified NO-inducible single domain globin, Cgb. However, nitrite also induced cgb expression in an NssR-dependent manner, suggesting that growth of C. jejuni with nitrite causes nitrosative stress. This was confirmed by lack of growth of cgb and nssR mutants, and slow growth of the nrfA mutant, in media containing nitrite. Thus, NrfA and Cgb together provide C. jejuni with constitutive and inducible components of a robust defence against nitrosative stress.

  20. Identification of genomic differences between Campylobacter jejuni subsp. jejuni and C. jejuni subsp. doylei at the nap locus leads to the development of a C. jejuni subspeciation multiplex PCR method

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    Heath Sekou

    2007-02-01

    Full Text Available Abstract Background The human bacterial pathogen Campylobacter jejuni contains two subspecies: C. jejuni subsp. jejuni (Cjj and C. jejuni subsp. doylei (Cjd. Although Cjd strains are isolated infrequently in many parts of the world, they are obtained primarily from human clinical samples and result in an unusual clinical symptomatology in that, in addition to gastroenteritis, they are associated often with bacteremia. In this study, we describe a novel multiplex PCR method, based on the nitrate reductase (nap locus, that can be used to unambiguously subspeciate C. jejuni isolates. Results Internal and flanking napA and napB primer sets were designed, based on existing C. jejuni and Campylobacter coli genome sequences to create two multiplex PCR primer sets, nap mpx1 and nap mpx2. Genomic DNA from 161 C. jejuni subsp. jejuni (Cjj and 27 C. jejuni subsp. doylei (Cjd strains were amplified with these multiplex primer sets. The Cjd strains could be distinguished clearly from the Cjj strains using either nap mpx1 or mpx2. In addition, combination of either nap multiplex method with an existing lpxA speciation multiplex method resulted in the unambiguous and simultaneous speciation and subspeciation of the thermophilic Campylobacters. The Cjd nap amplicons were also sequenced: all Cjd strains tested contained identical 2761 bp deletions in napA and several Cjd strains contained deletions in napB. Conclusion The nap multiplex PCR primer sets are robust and give a 100% discrimination of C. jejuni subspecies. The ability to rapidly subspeciate C. jejuni as well as speciate thermophilic Campylobacter species, most of which are pathogenic in humans, in a single amplification will be of value to clinical laboratories in strain identification and the determination of the environmental source of campylobacterioses caused by Cjd. Finally, the sequences of the Cjd napA and napB loci suggest that Cjd strains arose from a common ancestor, providing clues as to

  1. REM-Enriched Naps Are Associated with Memory Consolidation for Sad Stories and Enhance Mood-Related Reactivity

    OpenAIRE

    Médhi Gilson; Gaétane Deliens; Rachel Leproult; Alice Bodart; Antoine Nonclercq; Rudy Ercek; Philippe Peigneux

    2015-01-01

    Emerging evidence suggests that emotion and affect modulate the relation between sleep and cognition. In the present study, we investigated the role of rapid-eye movement (REM) sleep in mood regulation and memory consolidation for sad stories. In a counterbalanced design, participants (n = 24) listened to either a neutral or a sad story during two sessions, spaced one week apart. After listening to the story, half of the participants had a short (45 min) morning nap. The other half had a long...

  2. Synthesis of Zeolites Na-P1 from South African Coal Fly Ash: Effect of Impeller Design and Agitation

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    Leslie Petrik

    2013-05-01

    Full Text Available South African fly ash has been shown to be a useful feedstock for the synthesis of some zeolites. The present study focuses on the effect of impeller design and agitation rates on the synthesis of zeolite Na-P1 which are critical to the commercialization of this product. The effects of three impeller designs (4-flat blade, Anchor and Archimedes screw impellers and three agitation speeds (150, 200 and 300 rpm were investigated using a modified previously reported synthesis conditions; 48 hours of ageing at 47 °C and static hydrothermal treatment at 140 °C for 48 hours. The experimental results demonstrated that the phase purity of zeolite Na-P1 was strongly affected by the agitation rate and the type of impeller used during the ageing step of the synthesis process. Although zeolite Na-P1 was synthesized with a space time yield (STY of 15 ± 0.4 kg d−1m−3and a product yield of 0.98±0.05 g zeolites/g fly ash for each impeller at different agitation speeds, zeolite formation was assessed to be fairly unsuccessful in some cases due the occurrence of undissolved mullite and/or the formation of impurities such as hydroxysodalite with the zeolitic product. This study also showed that a high crystalline zeolite Na-P1 can be synthesized from South African coal fly ash using a 4-flat blade impeller at an agitation rate of 200 rpm during the ageing step at 47 °C for 48 hours followed by static hydrothermal treatment at 140 °C for 48 hours.

  3. Professional shift-work drivers who adopt prophylactic naps can reduce the risk of car accidents during night work.

    Science.gov (United States)

    Garbarino, Sergio; Mascialino, Barbara; Penco, Maria Antonietta; Squarcia, Sandro; De Carli, Fabrizio; Nobili, Lino; Beelke, Manolo; Cuomo, Gianni; Ferrillo, Franco

    2004-11-01

    Night work can be dangerous because both circadian sleep propensity (process C) and sleep pressure due to the prolonged wakefulness (process S) contribute to the reduction of vigilance levels. As naps are a countermeasure to sleepiness, this study evaluates the role they play in preventing sleep-related accidents in Italian shift-working police drivers. The study concerns highway car accidents that occurred to Italian shift-working police drivers; it was performed in 2 steps: a retrospective analysis of the overall number of accidents that occurred during the years 1993--1997 (n, 1195), followed by a validation analysis of a smaller cohort of accidents prospectively collected during 2003 (n, 84). N/A. RETROSPECTIVE ANALYSIS: The influence of process S, process C, driver characteristics, and context conditions on accident risk, estimated by means of Cox hazard regression, revealed that nighttime accident risk was mainly influenced by process S levels. Consequently, an experimental mathematical model linking the hourly observed number of accidents to process S levels was designed. Its generalization to the theoretical case of drivers omitting naps showed an increase of about 38% of accidents. PROSPECTIVE ANALYSIS: In order to validate our results, we compared retrospective and prospective sleep patterns: no statistical difference was found. Again, the hourly number of accidents increased with homeostatic sleep pressure; the theoretical efficacy of napping was quantified in 48% accidents decrease. Our data seem to confirm that napping before working a night shift is an effective countermeasure to alertness and performance deterioration associated with night work. Moreover, this self-initiated behavior could have a prophylactic efficacy in reducing the number of car accidents.

  4. 9种杀菌剂对花生白绢病菌的室内毒力测定%Toxicity Determination of 9 Fungicides on Sclerotium rolfsii Sacc.

    Institute of Scientific and Technical Information of China (English)

    谢瑾卉; 朱茂山

    2015-01-01

    Absrtact:In order to select safety and effective fungicides to Sclerotium rolfsii Sacc.,9 kinds of fungicides to the pathogenic fun-gus of Sclerotium rolfsii Sacc.were tested by means of mycelium growth rate method respectively.The results showed that Sclero-tium rolfsii Sacc.was inhibited under the condition of the 9 kinds of fungicides.Among the 9 fungicides ,the inhibition efficiency of 10% hexaconazole EC was the strongest,with the EC50 of 0.0989 μg /ml ,the inhibition efficiency of 50% fludioxonil WP, 25% difenoconazole EC,25% pyraclostrobin EC,reduced in succession,with the EC50 of 0.1223 ,1 .3823,1 .5371 μg /ml.The inhibition efficiency of 50% cyprodinil WG was the weakest,with the EC50 of 84.7805 μg /ml.%为筛选出安全有效的花生白绢病防治药剂。在室内离体条件下采用菌丝生长速率法测定9种杀菌剂对花生白绢病菌的毒力活性。9种杀菌剂对花生白绢病菌表现出不同的毒力活性。10%已唑醇 EC 毒力最强, EC50为0.0989μg /ml;50%咯菌腈 WP 、25%苯醚甲环唑 EC、25%吡唑醚菌酯 EC 毒力作用较强,EC50分别为0.1223、1.3823、1.5371μg /ml;50%嘧菌环胺 WG 毒力最弱,EC50为84.7805μg /ml。

  5. Nap1 stimulates homologous recombination by RAD51 and RAD54 in higher-ordered chromatin containing histone H1.

    Science.gov (United States)

    Machida, Shinichi; Takaku, Motoki; Ikura, Masae; Sun, Jiying; Suzuki, Hidekazu; Kobayashi, Wataru; Kinomura, Aiko; Osakabe, Akihisa; Tachiwana, Hiroaki; Horikoshi, Yasunori; Fukuto, Atsuhiko; Matsuda, Ryo; Ura, Kiyoe; Tashiro, Satoshi; Ikura, Tsuyoshi; Kurumizaka, Hitoshi

    2014-05-06

    Homologous recombination plays essential roles in mitotic DNA double strand break (DSB) repair and meiotic genetic recombination. In eukaryotes, RAD51 promotes the central homologous-pairing step during homologous recombination, but is not sufficient to overcome the reaction barrier imposed by nucleosomes. RAD54, a member of the ATP-dependent nucleosome remodeling factor family, is required to promote the RAD51-mediated homologous pairing in nucleosomal DNA. In higher eukaryotes, most nucleosomes form higher-ordered chromatin containing the linker histone H1. However, the mechanism by which RAD51/RAD54-mediated homologous pairing occurs in higher-ordered chromatin has not been elucidated. In this study, we found that a histone chaperone, Nap1, accumulates on DSB sites in human cells, and DSB repair is substantially decreased in Nap1-knockdown cells. We determined that Nap1 binds to RAD54, enhances the RAD54-mediated nucleosome remodeling by evicting histone H1, and eventually stimulates the RAD51-mediated homologous pairing in higher-ordered chromatin containing histone H1.

  6. Benjamin's artistic view from the concept of Benjamin's"aura"%从本雅明的“光韵”概念看本雅明的艺术观

    Institute of Scientific and Technical Information of China (English)

    陈政

    2014-01-01

    In the article of"art in the age of mechanical reproduction", Walter Benjamin put forward the"aura"concept, in order to explain the important characteristic of traditional art, and art characteristic with the age of mechanical reproduction is very fruitful distinction. In the artistic conception of Walter Benjamin, although the traditional self-discipline art, the authenticity, sanctity and authority, and art in the age of mechanical reproduction is instantaneous, lack of depth, but he did not on the technology era of art were all negative, in fact, the main representative figures in the Frankfurt school, Walter Benjamin was the positive scholar in the development of art since the age of mechanical reproduction, he affirm to the movie art, has the important enlightenment for us to look at modern art, has an important value for us to re-examine the social critical theory.%在《机械复制时代的艺术》一文中,本雅明提出了“光晕”概念,用以说明传统艺术的重要特征,并同机械复制时代的艺术特征进行了卓有成效的区分。在本雅明的艺术观念里,虽然传统自律艺术具有本真性、独一无二性、神圣性和权威性,而机械复制时代的艺术大多是瞬间的、缺乏深度的,但他并没有对技术时代的艺术进行一概否定,实际上,在法兰克福学派的主要代表人物中,本雅明是少有的对机械复制时代以来的艺术发展持肯定态度的学者,他对电影等艺术的肯定,对我们全面看待现代艺术具有重要启示,对我们重新审视社会批判理论也具有重要价值。

  7. Effects of unconditioned stimulus intensity and fear extinction on subsequent sleep architecture in an afternoon nap.

    Science.gov (United States)

    Sturm, Anna; Czisch, Michael; Spoormaker, Victor I

    2013-12-01

    Impaired fear extinction and disturbed sleep coincide in post-traumatic stress disorder (PTSD), but the nature of this relationship is unclear. Rapid eye movement (REM) sleep deprivation impairs fear extinction recall in rodents and young healthy subjects, and animal models have demonstrated both disrupted sleep after fear conditioning and normalized sleep after extinction learning. As a correlation between unconditioned stimulus (US) responding and subsequent sleep architecture has been observed in healthy subjects, the goal of this study was to test whether US intensity would causally affect subsequent sleep. Twenty-four young healthy subjects underwent a fear conditioning session with skin conductance response measurements before an afternoon session of polysomnographically recorded sleep (up to 120 min) in the sleep laboratory. Two factors were manipulated experimentally in a 2 × 2 design: US (electrical shock) was set at high or low intensity, and subjects did or did not receive an extinction session after fear conditioning. We observed that neither factor affected REM sleep amount, that high US intensity nominally increased sleep fragmentation (more Stage 1 sleep, stage shifts and wake after sleep onset), and that extinction increased Stage 4 amount. Moreover, reduced Stage 1 and increased Stage 4 and REM sleep were associated with subjective sleep quality of the afternoon nap. These results provide evidence for the notion that US intensity and extinction affect subsequent sleep architecture in young healthy subjects, which may provide a translational bridge from findings in animal studies to correlations observed in PTSD patients.

  8. Visual field information in Nap-of-the-Earth flight by teleoperated Helmet-Mounted displays

    Science.gov (United States)

    Grunwald, Arthur J.; Kohn, S.; Merhav, S. J.

    1991-01-01

    The human ability to derive Control-Oriented Visual Field Information from teleoperated Helmet-Mounted displays in Nap-of-the-Earth flight, is investigated. The visual field with these types of displays originates from a Forward Looking Infrared Radiation Camera, gimbal-mounted at the front of the aircraft and slaved to the pilot's line-of-sight, to obtain wide-angle visual coverage. Although these displays are proved to be effective in Apache and Cobra helicopter night operations, they demand very high pilot proficiency and work load. Experimental work presented in the paper has shown that part of the difficulties encountered in vehicular control by means of these displays can be attributed to the narrow viewing aperture and head/camera slaving system phase lags. Both these shortcomings will impair visuo-vestibular coordination, when voluntary head rotation is present. This might result in errors in estimating the Control-Oriented Visual Field Information vital in vehicular control, such as the vehicle yaw rate or the anticipated flight path, or might even lead to visuo-vestibular conflicts (motion sickness). Since, under these conditions, the pilot will tend to minimize head rotation, the full wide-angle coverage of the Helmet-Mounted Display, provided by the line-of-sight slaving system, is not always fully utilized.

  9. Perspectivas del uso de bacterias rizosféricas en el control de Pyricularia grisea (Cooke Sacc. en el cultivo del arroz (Oryza sativa L.

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    Yanelis Acebo Guerrero

    2011-04-01

    Full Text Available Prospect of the use of bacteria in the control Pyricularia grisea (Cooke Sacc. on rice (Oriza sativa L. Título corto: Bacterias rizosféricas para controlar la piriculariosis ResumenEl arroz es fuente de alimento para una gran parte de la población mundial, con alto promedio de consumo anual. En este cultivo las enfermedades de origen microbiano constituyen uno de los factores que inciden en la obtención de bajos rendimientos y calidad de los granos. La piriculariosis o añublo del arroz, causada por Pyricularia grisea, es la enfermedad más importante en este cultivo en América Latina, ya que puede provocar hasta el 100% de reducción de los rendimientos. Como parte de la estrategia de agricultura sostenible, se trata de controlar estos patógenos y lograr altos rendimientos del cultivo mediante una combinación adecuada de fertilizantes químicos y productos biológicos. En este sentido, la aplicación de inoculantes bacterianos constituidos por bacterias promotoras del crecimiento vegetal (Plant Growth- Promoting Bacteria, PGPB, por sus siglas en inglés ha constituido una alternativa ecológica que favorece la conservación del medioambiente y el ecosistema. Este trabajo tiene como objetivo abordar el estado actual y las perspectivas de uso de bacterias rizosféricas en el control de Pyricularia grisea en el cultivo del arroz, tratando algunos temas relevantes, como son las principales enfermedades que afectan al cultivo, los géneros de PGPB más utilizados para el control de las mismas y sus principales mecanismos de acción. Palabras clave: bacterias rizosféricas, arroz, piriculariosis. AbstractRice is an important food supply for a large part of the world population and its consumption rates are very high. Microbial diseases are one of the main causes that provoke low yields and low-quality spotted grains. Although fungi, bacteria and viruses are mostly the responsible for these losses, fungal diseases strike more frequently

  10. The Benjamin Franklin High School Urban League Street Academies Program. Evaluation of ESEA Title I Projects in New York City, 1967-68.

    Science.gov (United States)

    Guerriero, Michael A.

    This New York City school district educational project sought to locate actual dropouts and identify potential dropouts from Benjamin Franklin High School, and to involve them in the Urban Street Academy Program as a means of resolving their school problems and helping them continue their education. The objectives of the Academy were (1)…

  11. Final Report of the Evaluation of the 1969-1970 Benjamin Franklin Cluster Program: Programs and Patterns for Disadvantaged High School Students. ESEA Title I.

    Science.gov (United States)

    Hoffman, Louis J.

    The Cluster Program at Benjamin Franklin High School, funded under Title I of the 1965 Elementary Secondary Education Act, is designed to be a school within a school in which 249 ninth grade students attend classes in two separate clusters. Each cluster is formulated such that all students receive instruction from five teachers in classes whose…

  12. Para una lectura crítica de Hacia la crítica de la violencia de Walter Benjamin: Schmitt, Kafka, Agamben

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    Maura Zorita, Eduardo

    2009-12-01

    Full Text Available The purpose of this article is to assess in a critical fashion the way Giorgio Agamben reads Walter Benjamin’s essay on violence. I will particularly focus on the way Agamben relates this essay to other works by Carl Schmitt and Franz Kafka. Given his effort to steer Benjamin towards the concepts of «mere life» and certain qualities of the homo sacer, I will try to relocate Benjamin where his political essay belongs and, at the same time, re-read Agamben at his strongest points, but also at his weakest.

    El propósito de este artículo es evaluar críticamente la lectura de Giorgio Agamben del ensayo sobre la violencia de Walter Benjamin, muy particularmente en sus relaciones con otras obras relevantes de Franz Kafka y Carl Schmitt. A partir del intento de Agamben de derivar la «nuda vida» y ciertas determinaciones de su homo sacer del texto de Benjamin, buscaré situar la crítica de la violencia en el lugar que le corresponde, así como repensar la propia obra de Agamben, tan valiosa en algunos puntos como discutible en otros.

  13. New (G′/G-expansion method and its application to the Zakharov-Kuznetsov–Benjamin-Bona-Mahony (ZK–BBM equation

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    Muhammad Shakeel

    2015-10-01

    Full Text Available In this article, new (G′/G-expansion method is used to look for the traveling wave solutions of nonlinear evolution equations and abundant traveling wave solutions to the Zakharov-Kuznetsov–Benjamin-Bona-Mahony equation are constructed. The performance of the method is reliable, useful and gives more new general exact solutions than the existing methods.

  14. Reseña de Marmaridou, s. (2000 Pragmatic meaning and Cognition (Pragmatics and Beyond New Series, Amsterdam/ Philadelphia, John Benjamins Publishing Company.

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    José María García Núñez

    2011-04-01

    Full Text Available Normal 0 21 false false false ES X-NONE X-NONE MicrosoftInternetExplorer4 Se trata de una reseña sobre Marmaridou, s. (2000 Pragmatic meaning and Cognition Pragmatics and Beyond New Series, Amsterdam/ Philadelphia, John Benjamins Publishing Company.

  15. On Reconsidering Park, Johnson, DuBois, Frazier and Reid: A Reply to Benjamin Bowser's "The Contribution of Blacks to Sociological Knowledge."

    Science.gov (United States)

    Watts, Jerry G.

    1983-01-01

    Contends that Benjamin Bowser's essay (title cited above) contains conceptual and factual errors on such matters as the relationship of African slavery to European economic expansion; influence of Social Darwinism; and the role of Robert Park, W.E.B. DuBois, E. Franklin Frazier, and other Black historians in sociological research in this country.…

  16. Development and application of a microplate method to evaluate the efficacy of essential oils against Penicillium italicum Wehmer, Penicillium digitatum Sacc. and Colletotrichum musea (Berk. & M.A. Curtis Arx, three postharvest fungal pathogens of fruits

    Directory of Open Access Journals (Sweden)

    Bajji, M.

    2012-01-01

    Full Text Available A microbioassay was developed for evaluating the in vitro antifungal activity of 30 preselected essential oils. A template based on 10 serial dilutions with eight replicates per dilution arranged on two 96-well ELISA plates was used as a reproducible and standardized design to identify the in vitro effectiveness of these essential oils against Penicillium italicum Wehmer, Penicillium digitatum Sacc. and Colletotrichum musea (Berk. & M.A. Curtis Arx, three postharvest fungal pathogens, on fruits. Growth of mycelium was monitored by measuring optical density (492 nm. Cinnamomum zeylanicum, Cinnamomum verum and Eugenia caryophyllus were found to be still active against all the three pathogens even at 100 ppm. Compared to other methods, this microbioassay proved to be a rapid, reproducible, and efficient method for testing the efficacy of essential oils that inhibit spore germination in P. italicum, P. digitatum and C. musea. The assay requires relatively small amounts of essential oils.

  17. 1株拮抗酵母菌对柑橘绿霉病菌的抑制作用%Inhibitive activity of Kluyveromyces marxianus on Penicillium digitatum Sacc.

    Institute of Scientific and Technical Information of China (English)

    罗建军; 耿鹏; 胡美英; 黄慧斯; 贾建文

    2013-01-01

    以柑橘绿霉病菌(Penicillium digitatum Sacc.)为供试材料,研究拮抗酵母菌(Kluyverom yces marxianus)对柑橘采后绿霉病菌的抑制效果,并观察其对采后柑橘果实多酚氧化酶(PPO)、过氧化物酶(POD)和苯丙氨酸解氨酶(PAL)活性的影响.结果表明:拮抗酵母菌的菌株悬浮液和培养原液对柑橘采后绿霉病菌均有较好的抑制作用,但菌株培养上清液和热杀死液对柑橘绿霉病菌的抑制效果较差;与对照相比,接种拮抗菌与病原菌能够诱导柑橘果实PPO、POD和PAL活性的升高;拮抗酵母菌对柑橘绿霉病菌的抑菌机制与营养和空间的竞争以及诱导抗病性相关酶有关.%The inhibitive activity of Kluyveromyces marxianus against citrus green mold caused by Penicillium digitatum Sacc. was investigated, as well as its effect on the activities of polyphenol oxi-dase (PPO), peroxidase (POD) and phenylalanine ammonium-lyase (PAL). The results showed that the treatments of washed cell suspension and living cell suspension have better inhibiting effect, as compared to the control treatment; while the culture filtrate and autoclaved cell suspensions could exacerbate green mold decay. The application of K. marxianus could induce higher PPO, POD and PAL activity as compared to the control. It was suggested that the biocontrol mechanism might be competitive for nutrition and space, and contribute to the secretion of antagonistc substance.

  18. Entrevista com Benjamin T. Smith: a publicação de Dictablanda: politics, work and culture (1938-1968 e outras questões * Interview with Benjamin T. Smith: the published Dictablanda...

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    ALINE MARIA DE CARVALHO PAGOTTO

    2014-09-01

    Full Text Available Benjamin T. Smith é Professor Associado em História da América Latina na Universidade de Warwick, Reino Unido e, sobretudo, historiador e analista das políticas culturais do Estado mexicano no período do pós-revolução.No livro Pistoleros and popular moviments: the politics of state formation in postrevolutionary Oaxaca (2009, Benjamin Smith analisa a diversidade das políticas socioculturais do período pós-revolucionário. Por essa mesma razão, reflete algumas questões interessantes dos idos de 1920 a 1950, como, por exemplo, as características peculiares dos líderes locais e regionais, o surgimento e estabelecimento do movimento feminista, a violência exacerbada do governo e a reforma agrária.No mês de Março de 2014, Smith publicou, em coautoria com Paul Gillingham (Universidade da Pensilvânia, EUA, mais uma importante reflexão sobre esse tema. Dictablanda: politics, work and culture, 1938-1968 (2014 oferece uma nova perspectiva: a “dita-branda”; ou seja, os autores afirmam que o regime priista mexicano foi, em verdade,  uma ditadura de autoritarismo demasiado brando.Esta entrevista ocorreu durante a manhã do dia 28 de Abril de 2014, no Humanities Building (o prédio administrativo das Ciências Humanas da Universidade de Warwick, em Coventry, Reino Unido.

  19. Medical electricity and madness in the 18th century: the legacies of Benjamin Franklin and Jan Ingenhousz.

    Science.gov (United States)

    Beaudreau, Sherry Ann; Finger, Stanley

    2006-01-01

    Benjamin Franklin had at least two accidents that resulted in electricity passing through his brain. In addition, he witnessed a patient's similar accident and performed an experiment that showed how humans could endure shocks to the head without serious ill effects, other than amnesia. Jan Ingenhousz, Franklin's Dutch-born medical correspondent better known for his discovery of photosynthesis, also had a serious accident that sent electricity though his head and, in a letter to Franklin, he described how he felt unusually elated the next day. During the 1780s, Franklin and Ingenhousz encouraged leading French and English electrical "operators" to try shocking the heads of melancholic and other deranged patients in their wards. Although they did not state that they were responding to Ingenhousz's and Franklin's suggestions, Birch, Aldini, and Gale soon did precisely what Ingenhousz and Franklin had suggested. These practitioners did not appear to induce convulsions in their mentally ill patients, but they still reported notable successes.

  20. Theories of translation and modernity's anguished counter points: José María Arguedas and Walter Benjamin

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    Joshua Price

    2010-12-01

    Full Text Available In order to illuminate some of the basic terms of translation theory, I explore two essays, José María Arguedas' "The Anguish of the Mestizo" and Walter Benjamin's "The Task of the Translator." I argue that the terms of translation theory can be changed by paying attention to the ‘replies' to European modernity made from outside of Europe, especially those replies that come as theory from the colonized, in this case in the form of Arguedas' work. In the conclusion, I juxtapose Arguedas' work on Quechua and Spanish to explore aspects of translation and linguistic invention at another point of domination: in this case, African-American English as described by James Baldwin. Through that, we can measure the potential of a network of histories constructed from Europe's others.

  1. A visual ERP study of impulse inhibition following a zaleplon-induced nap after sleep deprivation.

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    Qianru Zhang

    Full Text Available The side effects of a zaleplon-induced nap as a countermeasure in the reduction of impulse inhibition function decline following 30 h of sleep deprivation (SD were examined by event-related brain potentials. Sixteen adult participants performed a Go/NoGo task at five time points: (1 baseline; (2 after 30 h of SD; (3 upon sudden awakening, also called 2 h post-drug; (4 4 h post-drug; and (5 6 h post-drug. Behavior results show an increase in both reaction time and false alarm rates after SD and sudden awakening, and a marked decrease at 4 h and 6 h post-drug in zaleplon and placebo conditions. However, no difference was observed between the zaleplon condition and the placebo condition. In event-related potential (ERP reults compared with results obtained under control conditions, NoGo-P3 latencies significantly increased, whereas the Nogo-P3 amplitude decreased after 30 h of SD and sudden awakening in both the zaleplon condition and the placebo condition. These results indicate that SD attenuates resource allocation and error monitoring for NoGo stimuli. In addition, NoGo-P3 latencies were longer in the zaleplon condition compared with the placebo condition at sudden awakening. Additionally, the NoGo-P3 latencies were shorter in the zaleplon condition than in the placebo condition at 4 h and 6 h post-drug. These results indicate that zaleplon at a dose of 10 mg/day may help subjects achieve a better recovery or maintain better impulse inhibition function, although the side effects of zaleplon last at least 2 h post-drug.

  2. Proteomic analysis of a NAP1 Clostridium difficile clinical isolate resistant to metronidazole.

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    Patrick M Chong

    Full Text Available BACKGROUND: Clostridium difficile is an anaerobic, Gram-positive bacterium that has been implicated as the leading cause of antibiotic-associated diarrhea. Metronidazole is currently the first-line treatment for mild to moderate C. difficile infections. Our laboratory isolated a strain of C. difficile with a stable resistance phenotype to metronidazole. A shotgun proteomics approach was used to compare differences in the proteomes of metronidazole-resistant and -susceptible isolates. METHODOLOGY/PRINCIPAL FINDINGS: NAP1 C. difficile strains CD26A54_R (Met-resistant, CD26A54_S (reduced- susceptibility, and VLOO13 (Met-susceptible were grown to mid-log phase, and spiked with metronidazole at concentrations 2 doubling dilutions below the MIC. Peptides from each sample were labeled with iTRAQ and subjected to 2D-LC-MS/MS analysis. In the absence of metronidazole, higher expression was observed of some proteins in C. difficile strains CD26A54_S and CD26A54_R that may be involved with reduced susceptibility or resistance to metronidazole, including DNA repair proteins, putative nitroreductases, and the ferric uptake regulator (Fur. After treatment with metronidazole, moderate increases were seen in the expression of stress-related proteins in all strains. A moderate increase was also observed in the expression of the DNA repair protein RecA in CD26A54_R. CONCLUSIONS/SIGNIFICANCE: This study provided an in-depth proteomic analysis of a stable, metronidazole-resistant C. difficile isolate. The results suggested that a multi-factorial response may be associated with high level metronidazole-resistance in C. difficile, including the possible roles of altered iron metabolism and/or DNA repair.

  3. Long-Term Single and Joint Effects of Excessive Daytime Napping on the HOMA-IR Index and Glycosylated Hemoglobin: A Prospective Cohort Study.

    Science.gov (United States)

    Li, Xue; Pang, Xiuyu; Zhang, Qiao; Qu, Qiannuo; Hou, Zhigang; Liu, Zhipeng; Lv, Lin; Na, Guanqiong; Zhang, Wei; Sun, Changhao; Li, Ying

    2016-02-01

    This prospective cohort study was conducted to assess the duration of daytime napping and its effect combined with night sleep deprivation on the risk of developing high HOMA-IR (homeostasis model assessment of insulin resistance) index and disadvantageous changes in glycosylated hemoglobin (HbA1c) levels.A total of 5845 diabetes-free subjects (2736 women and 3109 men), 30 to 65 years of age, were targeted for this cohort study since 2008. Multiple adjusted Cox regression models were performed to evaluate the single and joint effects of daytime napping on the risk of an elevated HbA1c level and high HOMA-IR index.After an average of 4.5 years of follow-up, >30 minutes of daytime napping was significantly associated with an increased risk of an elevated HbA1c level (>6.5%) in men and women (all P trend 30 minutes napping and the combination of no sleep deprivation with >30 minutes daytime napping were all associated with an HbA1c level >6.5% (HR = 2.08, 95% CI = 1.24-3.51; HR = 4.00, 95% CI = 2.03-7.90; and HR = 2.05, 95% CI = 1.29-3.27, respectively). No sleep deprivation combined with >30 minutes daytime napping correlated with a high risk of an HbA1c level between 5.7% and 6.4% and high HOMA-IR index (HR = 2.12, 95% CI = 1.48-3.02; and HR = 1.35, 95% CI = 1.10-1.65, respectively).Daytime napping >30 minutes was associated with a high risk of an elevated HbA1c level and high HOMA-IR index. No sleep deprivation combined with napping >30 minutes carries a risk of abnormal glucose metabolism. Sleep deprivation combined with brief daytime napping <30 minutes was not associated with a risk for an elevated HbA1c level and high HOMA-IR index.

  4. A single administration of the peptide NAP induces long-term protective changes against the consequences of head injury: gene Atlas array analysis.

    Science.gov (United States)

    Romano, Jacob; Beni-Adani, Liana; Nissenbaum, Orlev Levy; Brenneman, Douglas E; Shohami, Esther; Gozes, Illana

    2002-01-01

    The femtomolar-acting eight-amino-acid peptide (NAP), derived from activity-dependent neuroprotective protein (ADNP), provides long-term protection against the deleterious effects of closed head injury (CHI) in mice. Fifteen minutes after injury, mice were divided into two groups, control and NAP-treated and a single subcutaneous injection of NAP or vehicle was administered. A third group served as sham-treated (not subjected to head trauma). Each mouse was assessed for its clinical function, using neurological severity score, at various time intervals following CHI, up to 30-45 d. Total cerebral cortex RNA was prepared from the site of injury of CHI mice, and from parallel regions in peptide-treated and sham brains. RNA was then reversed transcribed to yield radioactive cDNA preparations that were hybridized to Atlas array membranes containing 1200 cDNAs spots. Comparison of sham-treated individual mice showed differential expression levels of at least 15 mRNA species. Furthermore, results indicated that one of the genes that did not change among individuals but specifically increased after CHI and decreased after NAP treatment was the cell surface glycoprotein Mac-1 (CD11B antigen). Thus, Mac-1 is suggested as a marker for the long-term outcome of head injury and as a potential target for NAP protective actions.

  5. 5th National Audit Project (NAP5) on accidental awareness during general anaesthesia: summary of main findings and risk factors.

    Science.gov (United States)

    Pandit, J J; Andrade, J; Bogod, D G; Hitchman, J M; Jonker, W R; Lucas, N; Mackay, J H; Nimmo, A F; O'Connor, K; O'Sullivan, E P; Paul, R G; Palmer, J H M G; Plaat, F; Radcliffe, J J; Sury, M R J; Torevell, H E; Wang, M; Hainsworth, J; Cook, T M

    2014-10-01

    We present the main findings of the 5th National Audit Project (NAP5) on accidental awareness during general anaesthesia (AAGA). Incidences were estimated using reports of accidental awareness as the numerator, and a parallel national anaesthetic activity survey to provide denominator data. The incidence of certain/probable and possible accidental awareness cases was ~1:19,600 anaesthetics (95% confidence interval 1:16,700-23,450). However, there was considerable variation across subtypes of techniques or subspecialities. The incidence with neuromuscular block (NMB) was ~1:8200 (1:7030-9700), and without, it was ~1:135,900 (1:78,600-299,000). The cases of AAGA reported to NAP5 were overwhelmingly cases of unintended awareness during NMB. The incidence of accidental awareness during Caesarean section was ~1:670 (1:380-1300). Two-thirds (82, 66%) of cases of accidental awareness experiences arose in the dynamic phases of anaesthesia, namely induction of and emergence from anaesthesia. During induction of anaesthesia, contributory factors included: use of thiopental, rapid sequence induction, obesity, difficult airway management, NMB, and interruptions of anaesthetic delivery during movement from anaesthetic room to theatre. During emergence from anaesthesia, residual paralysis was perceived by patients as accidental awareness, and commonly related to a failure to ensure full return of motor capacity. One-third (43, 33%) of accidental awareness events arose during the maintenance phase of anaesthesia, mostly due to problems at induction or towards the end of anaesthesia. Factors increasing the risk of accidental awareness included: female sex, age (younger adults, but not children), obesity, anaesthetist seniority (junior trainees), previous awareness, out-of-hours operating, emergencies, type of surgery (obstetric, cardiac, thoracic), and use of NMB. The following factors were not risk factors for accidental awareness: ASA physical status, race, and use or omission

  6. A model for the human's use of visual field cues in nap-of-the-Earth flight

    Science.gov (United States)

    Hess, R. A.; Chan, K.

    1986-01-01

    A simple model is developed which describes the manner in which the human pilot may use visual field cues in controlling a vehicle in nap-of-the earth flight. The model is based upon the feedforward of information obtained from streamer patterns in the visual field to the inner-most loop of a multi-loop pilot/vehicle model. In this framework, the model is a logical extension of pursuit and preview models of the human operator which have appeared in the literature. Simulation and flight test data involving low-level helicopter flight tasks are applied to model development and validation.

  7. Cloning, Sequence Identification and Expression Analysis of NAP1L5 in Porcine Placenta at Different Gestation Stages%猪NAP1L5基因克隆、序列鉴定及在不同妊娠时期胎盘中的差异表达分析

    Institute of Scientific and Technical Information of China (English)

    顾婷; 赵书红; 李长春

    2012-01-01

    旨在获得猪NAP1L5基因的序列特征、组织表达及生物学功能等相关信息.本试验通过RT-PCR克隆了猪NAP1L5基因,并运用生物信息学方法分析了不同物种序列进化关系,运用荧光定量PCR技术检测了NAP1L5在梅山猪不同妊娠时期胎盘中的表达.序列分析结果表明,猪NAP1 L5基因CDS全长579 bp,编码193个氨基酸.其核苷酸序列与牛的相似性为89%,其中氨基酸序列包含一段保守的核小体组装蛋白(Nucleosome assembly protein,NAP)特征序列.荧光定量结果表明NAP1L5基因随着妊娠时期的增长呈上升表达,在26和50 d之间表达量差异极显著(P<0.01).以上结果支持了NAP1L5基因可能与猪胎儿营养获取及早期发育有关,为进一步研究猪NAP1 L5基因的功能奠定了基础.%The aim of this study was to obtain the information about sequence structure, tissue expression and biology function of porcine NAP1L5 gene. In the present study* the porcine NAP1L5 was cloned by RT-PCR, the sequence was analyzed by bioinformatics method, and its relative mRNA expression was detected by quantitative RT-PCR in porcine placenta at different gestation stages. Sequence analysis showed that the CDS region of the porcine NAP1L5 gene included 579 nucleotides, encoding 193 amino acids, and the sequence similarity of NAP1L5 between the pig and cattle was 89%. The amino acids sequence included the nucleosome assembly protein. The result of quantitative RT-PCR indicated that the expression of porcine NAP1L5 increased with the placenta development and there were significant difference between d26 and d50 of gestation stage (P<0. 01). These results suggest that NAP1L5 is probably related to the nutrition absorption and early development of porcine fetus, and make a foundation for the further study on the function of NAP1L5 gene in porcine.

  8. NapA Na(+)/H(+) Antiporter as a Sodium Extrusion System Supplementary to the Vacuolar Na(+)-ATPase in Enterococcus hirae.

    Science.gov (United States)

    Kawano, M; Igarashi, K; Solioz, M; Kakinuma, Y

    1998-01-01

    Enterococcus hirae has two sodium extrusion systems: the NapA Na(+)/H(+) antiporter and the vacuolar Na(+)-ATPase. We found that a NapA mutant, WD4, which is deficient in Na(+)/H(+) antiporter activity, grew well in the pH range of 6 to 10 up to 200 mM sodium. This was due to active, potential-independent sodium extrusion by the Na(+)-ATPase, which was induced under these conditions. The NapA Na(+)/H(+) antiporter is thus not a prerequisite for growth of E. hirae in the presence of sodium, but plays a supplementary role in sodium extrusion at acidic pH.

  9. Ángeles en el abismo. Las imágenes dialécticas de Walter Benjamin y José Revueltas

    OpenAIRE

    Espinoza, Rogelio

    2010-01-01

    “Ángeles en el abismo. Las imágenes dialécticas de Walter Benjamin y José Revueltas” plantea paratopías textuales y existenciales en ambos autores. El hilo conductor es el concepto de “imagen dialéctica” de Benjamin y de “realismo dialéctico” de Revueltas. El objetivo principal del artículo es realizar una exploración de ambos autores en el terreno común de la filosofía, la historia y la literatura, enmarcando problemas concretos en torno a la teología y el marxismo como fuentes de inspiració...

  10. Pensando el presente y soñando el pasado: la política y la historia en el proyecto de los pasajes de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Alex Betancourt Serrano

    2008-01-01

    Full Text Available Este artículo explora las propuestas políticas e históricas de Walter Benjamin que surgen de su Llibro de los pasajes. Se esboza la crítica de Benjamin al historicismo y se presenta su propuesta de interpretación histórica como un sueño para tener en cuenta la relación dialéctica entre el pasado y las posibilidades políticas del presente. Se argumenta que el elemento de urgencia, que implica la visión benjaminiana, adscrita a un ethos democrático, nos provee una propuesta y una visión progresistas de lo político sin caer en teleologías historicistas.

  11. Lo clásico y la tradición en Paul Valéry, T. S. Eliot y Walter Benjamin

    Directory of Open Access Journals (Sweden)

    William Díaz Villarreal

    2016-01-01

    Full Text Available Este trabajo describe el sentido de la noción de lo clásico en tres autores: Paul Valéry, T. S. Eliot y Walter Benjamin. En el primero, lo clásico supone la imposición de un orden a partir del desorden del material natural, mientras que el segundo recurre a metáforas organicistas para concebirlo como el resultado de un estado de madurez de la cultura. Estos dos sentidos confluyen de un modo negativo en las ideas de Benjamin, cuya perspectiva está marcada por la idea de redención: él desvaloriza, en cierto modo, el sentido tradicional de lo clásico, pero al concebirlo como una acumulación de ruinas, busca hacer estallar sus posibilidades revolucionarias.

  12. Hiina tänapäeva arhitektuur - karmiilmeline, aga põnev / Zhang Ke, Zhang Hong, Xiaodu Liu ; interv. Hanna Läkk ja Ene Läkk

    Index Scriptorium Estoniae

    Zhang Ke

    2006-01-01

    Intervjuu Hiina arhitektuuribüroo Standardarchitecture arhitektide Zhang Ke ja Zhang Hongiga ning arhitektuuribüroo Urbanus arhitekti Xiaodu Liuga Hollandis Hiina tänapäeva tutvustaval näitusel. Hiina arhitektide haridusest, oma arhitektuuribüroode töödest, tänapäeva hiina arhitektuurist, põhiprobleemidest

  13. Hiina tänapäeva arhitektuur - karmiilmeline, aga põnev / Zhang Ke, Zhang Hong, Xiaodu Liu ; interv. Hanna Läkk ja Ene Läkk

    Index Scriptorium Estoniae

    Zhang Ke

    2006-01-01

    Intervjuu Hiina arhitektuuribüroo Standardarchitecture arhitektide Zhang Ke ja Zhang Hongiga ning arhitektuuribüroo Urbanus arhitekti Xiaodu Liuga Hollandis Hiina tänapäeva tutvustaval näitusel. Hiina arhitektide haridusest, oma arhitektuuribüroode töödest, tänapäeva hiina arhitektuurist, põhiprobleemidest

  14. Uma pequena história do espaço (e do tempo: o conceito de espaço em Kant, Lessing, Foucault e Benjamin

    Directory of Open Access Journals (Sweden)

    Georg Otte

    2007-06-01

    valor diferenciado nas “epistémes” (Foucault de cada época. Nossa hipótese é que a temporalização do pensamento, que marca a passagem da “Idade Clássica” para a Modernidade, encontra em Walter Benjamin um dos seus mais expressivos adversários mediante a valorização do espaço.

  15. Biallelic expression of Tssc4, Nap1l4, Phlda2 and Osbpl5 in adult cattle

    Indian Academy of Sciences (India)

    Mengnan Wang; Dongjie Li; Mingyue Zhang; Wenzhi Yang; Guojiang Wu; Yali Cui; Shijie Li

    2015-09-01

    Genomic imprinting of the Cdkn1c/Kcnq1ot1 region shows lack of conservation between human and mouse. This region has been reported to be associated with Beckwith–Wiedemann syndrome (BWS) and cancer. To increase our understanding of imprinted genes in bovine Cdkn1c/Kcnq1ot1 imprinting cluster, we assessed the imprinting status of four cattle genes (Tssc4, Nap1l4, Phlda2 and Osbpl5) in seven types of tissues: heart, liver, spleen, lung, kidney, skeletal muscle and subcutaneous fat using polymorphism-based sequencing approach. It was found that all the four genes showed biallelic expression in tissues in which transcripts were detected. Nap1l4 and Tssc4 were detected in all examined tissues, while the expression of Phlda2 and Osbpl5 was tissue-specific. Phlda2 was not detected in heart and subcutaneous fat, and Osbpl5 was not detected in spleen and skeletal muscle. In addition, identification of species-specific imprinted genes is necessary to understand the evolution of genomic imprinting and to elucidate mechanisms leading to allele-specific expression.

  16. Regulovatelný zdroj napájený a řízený pomocí USB

    OpenAIRE

    PAVLÍČEK, Petr

    2010-01-01

    Diplomová práce se zabývá návrhem a realizací napěťového zdroje, který je napájený a řízený pomocí sběrnice USB. V teoretické části je popsán princip komunikace na sběrnici USB a popsány ovladače, které tuto komunikaci zajišťují, jsou popsány principy funkce lineárních stabilizátorů a základních typů DC/DC měničů. Uvedena je zde také teorie PID regulátorů. Praktická část práce se zabývá návrhem vhodné topologie DC/DC měniče, návrhem způsobu jeho řízení a vytvořením algoritmů k tomu určených. ...

  17. New insights into alkylammonium-functionalized clinoptilolite and Na-P1 zeolite: Structural and textural features

    Science.gov (United States)

    Muir, Barbara; Matusik, Jakub; Bajda, Tomasz

    2016-01-01

    The area of zeolites' application could be expanded by utilizing their surfaces. Zeolites are frequently modified to increase their hydrophobicity and to generate the negative charge of the surface. The main objective of the study was to investigate and compare the features of natural clinoptilolite and synthetic zeolite Na-P1 modified by selected surfactants involving quaternary ammonium salts. The FTIR study indicates that with increasing carbon chain length in the surfactant attached to the zeolites surface the molecules adopt a more disordered structure. FTIR was also used to determine the efficiency of surface modification. Thermal analysis revealed that the presence of surfactant results in additional exothermic effects associated with the breaking of electrostatic bonds between zeolites and surfactants. The mass losses are in line with ECEC and CHN data. The textural study indicates that the synthetic zeolite Na-P1 has better sorption properties than natural clinoptilolite. The modification process always reduces the SBET and porosity of the material. With an increasing carbon chain length of surfactants all the texture parameters decrease.

  18. Heterodimeric nitrate reductase (NapAB) from Cupriavidus necator H16: purification, crystallization and preliminary X-ray analysis

    Energy Technology Data Exchange (ETDEWEB)

    Coelho, Catarina; González, Pablo J.; Trincão, José; Carvalho, Ana L.; Najmudin, Shabir [REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica (Portugal); Hettman, Thomas; Dieckman, Stephan [Institute for Molecular Biotechnology, Beutenbergstrasse 11, 07745 Jena (Germany); Moura, José J. G.; Moura, Isabel; Romão, Maria J., E-mail: mromao@dq.fct.unl.pt [REQUIMTE/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica (Portugal)

    2007-06-01

    Crystals of the oxidized form of the periplasmic nitrate reductase from Cupriavidus necator were obtained using polyethylene glycol 3350 as precipitant The periplasmic nitrate reductase from Cupriavidus necator (also known as Ralstonia eutropha) is a heterodimer that is able to reduce nitrate to nitrite. It comprises a 91 kDa catalytic subunit (NapA) and a 17 kDa subunit (NapB) that is involved in electron transfer. The larger subunit contains a molybdenum active site with a bis-molybdopterin guanine dinucleotide cofactor as well as one [4Fe–4S] cluster, while the small subunit is a di-haem c-type cytochrome. Crystals of the oxidized form of this enzyme were obtained using polyethylene glycol 3350 as precipitant. A single crystal grown at the High Throughput Crystallization Laboratory of the EMBL in Grenoble diffracted to beyond 1.5 Å at the ESRF (ID14-1), which is the highest resolution reported to date for a nitrate reductase. The unit-cell parameters are a = 142.2, b = 82.4, c = 96.8 Å, β = 100.7°, space group C2, and one heterodimer is present per asymmetric unit.

  19. Heterodimeric nitrate reductase (NapAB) from Cupriavidus necator H16: purification, crystallization and preliminary X-ray analysis

    Science.gov (United States)

    Coelho, Catarina; González, Pablo J.; Trincão, José; Carvalho, Ana L.; Najmudin, Shabir; Hettman, Thomas; Dieckman, Stephan; Moura, José J. G.; Moura, Isabel; Romão, Maria J.

    2007-01-01

    The periplasmic nitrate reductase from Cupriavidus necator (also known as Ralstonia eutropha) is a heterodimer that is able to reduce nitrate to nitrite. It comprises a 91 kDa catalytic subunit (NapA) and a 17 kDa subunit (NapB) that is involved in electron transfer. The larger subunit contains a molybdenum active site with a bis-molybdopterin guanine dinucleotide cofactor as well as one [4Fe–4S] cluster, while the small subunit is a di-haem c-type cytochrome. Crystals of the oxidized form of this enzyme were obtained using polyethylene glycol 3350 as precipitant. A single crystal grown at the High Throughput Crystallization Laboratory of the EMBL in Grenoble diffracted to beyond 1.5 Å at the ESRF (ID14-1), which is the highest resolution reported to date for a nitrate reductase. The unit-cell parameters are a = 142.2, b = 82.4, c = 96.8 Å, β = 100.7°, space group C2, and one heterodimer is present per asymmetric unit. PMID:17554176

  20. Naturaleza caída y sujeto melancólico: una lectura desde la filosofía del lenguaje de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Luciana Espinosa

    2012-12-01

    Full Text Available En el presente artículo sostenemos que el abordaje benjaminiano del problema de la melancolía en El origen del drama barroco alemán (1928 pone en juego la posibilidad de acceder a la estructura profunda del mundo material, mediante el establecimiento de una singular relación entre el sujeto melancólico y la naturaleza caída. Pues, si como el propio Benjamin afirma, todo sentimiento es la resultante de un objeto o de cierta conformación material que opera como su causa, la melancolía, por su parte, es aquel sentimiento surgido del lamento profundo de la naturaleza revelado por medio del lenguaje, capaz de contemplar la tristeza que la constituye y el dolor que le genera la imposibilidad de redención.In this paper we argue that Walter Benjamin's approach to the problem of melancholy in The origin of German tragic drama (1928 brings an access to the deep structure of the material world through the establishment of a unique relationship between the melancholic human being and fallen nature. Therefore, if, as Benjamin says, every feeling is the result of an object or some material conformation that operates as its cause, melancholy, for its part, is that feeling emerged from the deep regret of nature revealed by the means of a language able to contemplate the sadness which constitutes it and the pain that generates the impossibility of redemption.

  1. Walter Benjamin: tempo de escola - tempo de agora. Prolegômenos para uma educação para dias feriados

    Directory of Open Access Journals (Sweden)

    Angela Medeiros Santi

    2012-03-01

    Full Text Available O propósito deste artigo é relacionar o pensamento de Walter Benjamin com o universo da educação e da infância, através da noção de tempo. A infância, para Benjamin, representa a suspensão do tempo vazio e linear, em favor de um tempo "artístico", um tempo de "dias feriados". A educação, em sua forma tradicional, trabalha com a formação da criança para o tempo linear, mas a infância, em sua potência revolucionária, é a suspensão do tempo como repetição mecânica, em favor de um tempo artístico, um "tempo de agora". Com base na constelação conceitual construída por Benjamin, pretendemos pensar uma agenda voltada para o futuro da educação, onde a escola deve, então, voltar seus investimentos para o tempo intensivo, o das surpresas, o dos cortes, o do inusitado. O artigo aponta para a educação pensada como experiência de outra temporalidade - aquela que se faz num encontro intensivo entre coisas e pessoas, livre e aberto para o inédito, aberto para o radical e para o agora.

  2. [Narratives in the study of mental health care practices: contributions of the perspectives of Paul Ricoeur, Walter Benjamin and of medical anthropology].

    Science.gov (United States)

    Onocko-Campos, Rosana Teresa; Palombini, Analice de Lima; Leal, Erotildes; de Serpa, Octavio Domont; Baccari, Ivana Oliveira Preto; Ferrer, Ana Luiza; Diaz, Alberto Giovanello; Xavier, Maria Angélica Zamora

    2013-10-01

    Narratives are ever more frequent in qualitative studies seeking to interpret experiences and the different viewpoints of individuals in a given context. Starting from this concept, the tradition that addresses narrative is reexamined, including the philosophy of Paul Ricoeur, the historical perspective of Walter Benjamin and the field of medical anthropology grounded in phenomenology. In Ricoeur, with hermeneutics as a variation derived from phenomenology, narrative is linked to temporality. In Benjamin, narrative comprised of bits and pieces, always inconclusive, emerges in spite of the official stories. If Ricoeur retrieves tradition from Gadamer as a fundamental component for the construction of the world of a text that makes imitation of life possible, Benjamin, faced with the collapse of tradition, suggests the invention of narrative forms outside the traditional canons, making it possible to hark to the past in order to change the present. Assumptions of medical anthropology are also presented, as they consider narrative a dimension of life and not its abstraction, namely an embodied and situated narrative. Lastly, three distinct research projects in mental health that use narrative linked to the theoretical concepts cited with their differences and similarities are presented.

  3. John Piper et Benjamin Britten : le renouveau de l’opéra anglais et ses décors John Piper and Benjamin Britten: backdrops to the renaissance of english opera

    Directory of Open Access Journals (Sweden)

    Sophie Aymès

    2009-10-01

    Full Text Available From 1946 the artist John Piper designed sets for eight of Benjamin Britten’s operas. In this article, John Piper’s contribution to the renaissance of English opera is considered in the wider context of the artistic and political reconstruction of England after the Second World War. During the War, Piper was one of the artists who redefined Englishness. As an abstract artist turned architectural painter, he created a pastoral vision of the national heritage whose preservation had become necessary. The designs form a part of Piper’s pictorial work whose logical conclusion found expression in stained-glass windows. From the architectural designs for The Rape of Lucretia to the window he designed for the new Coventry Cathedral and to the last opera sets for Death in Venice, he created backdrops for Britten’s works that provided a sense of aesthetic continuity whilst reflecting the contradictions of opera as a social form of art in post-war Britain.

  4. Hermetismo e provocação: sobre “A tarefa do tradutor”, de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Georg Otte

    2015-12-01

    mesmo tempo um atrativo e um desafi o para seus leitores. Justapondo afirmações apodíticas, ele mesmo dá um exemplo dessa ambivalência pela provocativa ideia de que nem a obra literária nem sua tradução estariam dirigidas ao seu leitor. Considerando o uso comunicativo da linguagem como um abuso, Benjamin não apenas defende a autonomia da obra, mas também reivindica a autonomia da tradução como “forma”. Não sendo um canal de comunicação para o original nem sua derivação, a tarefa da tradução consiste em despertar a “pura língua” no original. Assim, correspondências escondidas têm de substituir a comunicação linear.

  5. La máquina mitológica de Furio Jesi y la cita a Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Mercedes Ruvitoso

    2014-12-01

    Full Text Available En su modelo cognoscitivo llamado “máquina mitológica” Furio Jesi se propone circuns­cribir el concepto de “mito” mediante una técnica de composición crítica de datos y doctrinas sobre el mito y la mitología. El modelo no sólo busca afrontar razones de tipo científico metodológicas sino también ético-políticas. Se trata de evitar toda evocación e instrumentalización del mito en vistas a un interés político. Este trabajo analiza el modo en que el modelo de Jesi retoma y desarrolla dos motivos de la obra de Walter Benjamin: (1 el llamado método de la citación sin comillas y (2 la crítica a las teorías reaccionarias del mito, específicamente en lo que concierne a la rehabilitación de Bachofen en la cultura alemana de las décadas de 1920-1930.

  6. 浅析本雅明的“灵韵”理论思想%Benjamin's"Aura"Theory Thought

    Institute of Scientific and Technical Information of China (English)

    宋雯燕

    2014-01-01

    院在前人的基础上,本雅明通过进行创造性的运用和发展,进而形成“灵韵”。观赏者透过神韵,通过联想和互动,能够被艺术强烈地震撼。但是,随着现代机械复制技术的不断发展,灵韵逐步被摧毁。本文通过阐述灵韵的含义,介绍灵韵的基本特性,同时对灵韵的结局---被摧毁进行分析。进而希望对人们的感觉系统进行改变和重塑。%On the basis of our predecessors, through Benjamin's creative use and development, the "aura" is formed. Through charm and association and interaction, the viewers can be strongly shock by art. However, with the continuous development of modern mechanical reproduction techniques, aura is gradually destroyed. This paper describes the meaning of aura, introduces the basic features of aura, at the same time analyzes the ending of aura-are destroyed, with a view to change and remodel people's feel system.

  7. Global paths of time-periodic solutions of the Benjamin-Ono equation connecting arbitrary traveling waves

    Energy Technology Data Exchange (ETDEWEB)

    Ambrose, David M.; Wilkening, Jon

    2008-12-11

    We classify all bifurcations from traveling waves to non-trivial time-periodic solutions of the Benjamin-Ono equation that are predicted by linearization. We use a spectrally accurate numerical continuation method to study several paths of non-trivial solutions beyond the realm of linear theory. These paths are found to either re-connect with a different traveling wave or to blow up. In the latter case, as the bifurcation parameter approaches a critical value, the amplitude of the initial condition grows without bound and the period approaches zero. We propose a conjecture that gives the mapping from one bifurcation to its counterpart on the other side of the path of non-trivial solutions. By experimentation with data fitting, we identify the form of the exact solutions on the path connecting two traveling waves, which represents the Fourier coefficients of the solution as power sums of a finite number of particle positions whose elementary symmetric functions execute simple orbits in the complex plane (circles or epicycles). We then solve a system of algebraic equations to express the unknown constants in the new representation in terms of the mean, a spatial phase, a temporal phase, four integers (enumerating the bifurcation at each end of the path) and one additional bifurcation parameter. We also find examples of interior bifurcations from these paths of already non-trivial solutions, but we do not attempt to analyze their algebraic structure.

  8. Macumba surrealista: observações de Benjamin Péret em terreiros cariocas nos anos 1930

    Directory of Open Access Journals (Sweden)

    Emerson Giumbelli

    2015-06-01

    Full Text Available ResumoBenjamin Péret, poeta surrealista francês, viveu no Brasil entre 1929 e 1931, período no qual observou rituais em terreiros afro-brasileiros e compôs relatos registrados em uma série de artigos (“Candomblé e macumba” publicados em um jornal paulistano. O texto oferece uma análise desse conjunto de artigos, recorrendo a outras referências de e sobre Péret. Privilegia dois conjuntos de questões. Primeiro, como as observações do poeta francês dialogam com as etnografias contemporâneas sobre grupos e rituais de origem africana. Segundo, os diálogos que se estabelecem entre o olhar de Péret e preocupações de parcela do modernismo brasileiro. As transformações pelas quais passam as religiões afro-brasileiras podem ser vistas como processos que colocam em jogo questões semelhantes ao projeto modernista de “descoberta do Brasil”. O relato de Péret, com suas marcas surrealistas, é ao mesmo tempo testemunha e produto dessa busca.

  9. H14[NaP5W29MoO110]: a Novel and Useful Catalyst for Aminolysis of Epoxides with Amines under Solvent-Free Conditions

    Institute of Scientific and Technical Information of China (English)

    HERAVI,Majid M; BEHBAHANI,Farahnaz K; OSKOOIE,Hossien A; BAMOHARRAM,Fatemeh F

    2008-01-01

    A simple and efficient method has been developed for the synthesis of β-amino alcohols by ring opening of ep-oxides in the presence of a catalytic amount of H14[NaP5W29MoO110] at room temperature under solvent-free condi-tions. The reaction works well for both aromatic and aliphatic amines.

  10. Cloning and characterization of the NapA acid phosphatase/phosphotransferase of Morganella morganii: identification of a new family of bacterial acid-phosphatase-encoding genes.

    Science.gov (United States)

    Thaller, M C; Lombardi, G; Berlutti, F; Schippa, S; Rossolini, G M

    1995-01-01

    The gene encoding a minor phosphate-irrepressible acid phosphatase (named NapA) of Morganella morganii was cloned and sequenced, and its product characterized. NapA is a secreted acid phosphatase composed of four 27 kDa polypeptide subunits. The enzyme is active on several organic phosphate monoesters but not on diesters, and is also endowed with transphosphorylating activity from organic phosphoric acid esters to nucleosides and other compounds with free hydroxyl groups. Its activity is inhibited by EDTA, inorganic phosphate, nucleosides and Ca2+, but not by fluoride or tartrate, and is enhanced by Mg2+, Co2+ and Zn2+. At the sequence level, the NapA enzyme did not show similarities to any other sequenced bacterial phosphatases. However, a search for homologous genes in sequence databases allowed identification of two open reading frames located within sequenced regions of the Escherichia coli and Proteus mirabilis genomes respectively, encoding proteins of unknown function which are highly homologous to the Morganella enzyme. Moreover, the properties of the NapA enzyme are very similar to those reported for the periplasmic nonspecific acid phosphatase II of Salmonella typhimurium (for which no sequence data are available). These data point to the existence of a new family of bacterial acid phosphatases, which we propose designating class B bacterial acid phosphatases.

  11. Integrated synthesis of zeolites 4A and Na-P1 using coal fly ash for application in the formulation of detergents and swine wastewater treatment.

    Science.gov (United States)

    Cardoso, Ariela M; Horn, Martha B; Ferret, Lizete S; Azevedo, Carla M N; Pires, Marçal

    2015-04-28

    Several researchers have reported zeolite synthesis using coal ash for a wide range of applications. However, little attention has been given to green processes, including moderate synthesis conditions, using waste as raw material and effluent reuse or reduction. In this study, Brazilian coal fly ashes were used for integrated synthesis of zeolites 4A and Na-P1 by two different routes and under moderate operating conditions (temperature and pressure). Both procedures produced zeolites with similar conversions (zeolite 4A at 82% purity and zeolite Na-P1 at 57-61%) and high CEC values (zeolites 4A: 4.5meqCa(2+)g(-1) and zeolites Na-P1: 2.6-2.8meqNH4(+)g(-1)). However, process 1 generated less effluent for the zeolite mass produced (7mLg(-1)), with low residual Si and Al levels and 74% of the Si available in the coal fly ash incorporated into the zeolite, while only 55% is used in process 2. For use as a builder in detergents, synthetic zeolite 4A exhibited conformity parameters equal to or greater than those of the commercial zeolite adopted as reference. Treatment of swine wastewater with zeolite Na-P1 resulted in a high removal capacity for total ammoniacal nitrogen (31mgg(-1)).

  12. H14[NaP5W30O110] as a Heterogeneous Recyclable Catalyst for the Air Oxidation of Thiols Under Solvent Free Conditions

    Directory of Open Access Journals (Sweden)

    Fatemeh F. Bamoharram

    2007-09-01

    Full Text Available The catalytic oxidation of thiols to the corresponding disulfides usingPreyssler’s catalyst H14[NaP5W30O110] has been studied. These highly selective oxidationsgave good yields of the target disulfides.

  13. A dicotomia tradutor/autor na leitura de "a tarefa do tradutor", de Benjamin, por Derrida The dichotomy translator/author in the reading of Benjamin's "die aufgabe des übersetzers" by Derrida

    Directory of Open Access Journals (Sweden)

    Vanete Dutra Santana

    2008-06-01

    Full Text Available O presente artigo analisa a dicotomia entre tradutor/tradução (texto de chegada e autor/original (texto de partida, considerando a postura da crítica tradicional, representada aqui pela apreciação de Maurício Santana Dias à tradução de A Divina Comédia, de Dante Alighieri, empreendida por Italo Eugênio Mauro e de Carlos Heitor Cony e Ivo Barroso a traduções do poema O Corvo, de Edgar Allan Poe; alguns casos exemplares em que tradução e original se confundem, como a tradução que Charles Baudelaire fez dos contos de Edgard Allan Poe e a obra de Daniel Gagnon, Une fille a marie e The daughter to marriage, uma mesma história escrita pelo mesmo autor em duas línguas diferentes; a questão dos direitos autorais e a discussão de Jacques Derrida sobre tradução e original e a tarefa do tradutor, contida em "Des Tours de Babel", texto em que retoma o clássico "A tarefa do tradutor" (Die Aufgabe des Übersetzers, de Walter Benjamin. Partindo da análise de discurso, da desconstrução e dos conceitos pós-coloniais de tradução, nosso objetivo foi demonstrar que as obras traduzidas não se encontram, necessariamente, em patamar inferior, em termos de qualidade literária, em relação à obra de partida, ressaltando que, em muitos casos, quando não se dispõe do que chamamos "elementos formais de distinção", não é possível distinguir original de tradução. Logo, concluímos, partir do pressuposto de que inferioridade literária seria característica de tradução premissa em que a crítica tradicional tem se apoiado para justificar suas avaliações negativas das traduções não faz sentido algum.The article analyzes the dichotomy between translator/translation and author/"original", considering the stance of the traditional critique, represented here by the Mauricio Santana Dias´ appreciation to the translation of Dante Alighieri´s Divina Comedia, done by Italo Eugenio Mauro; Carlos Heitor Cony´s appreciation to the

  14. Walter Benjamin e a infância: apontamentos impressionistas sobre sua(s narrativa(s a partir de narrativas diversas = Walter Benjamin and childhood: impressionist notes on his narrative(s from diverse narratives

    Directory of Open Access Journals (Sweden)

    Marchi, Rita de Cassia

    2011-01-01

    Full Text Available Este artigo trata da infância como objeto de reflexão filosófica em Walter Benjamin (WB, sugerindo que tal autor é o precursor dos atuais estudos sociais sobre a infância que veem a criança como ator social e como produtora de cultura, por ser muito anterior a Philippe Ariès. A experiência da infância em WB surge através do trabalho da sua memória sobre emoções, brinquedos e livros infantis, além de suas reflexões sobre pedagogia. Nos textos de WB sobre infância, no início do século XX, vemos afirmada a atual visão da especificidade das culturas infantis, em que a criança não é o adulto em miniatura, e sim detentora de uma razão própria, ainda que irracional aos nossos olhos. Assim, em WB, como em Baudelaire, a criança é o indivíduo capaz de descobrir ou criar o ‘novo’ em oposição ao ‘sempre-igual’; o novo como a constante e fascinada (redescoberta da própria vida; aquilo que, paradoxalmente, é também o ‘eterno e o imutável’. Este artigo é composto de reflexões feitas à luz de textos de WB, de leitores e exegetas de sua obra e de autores de outras áreas do conhecimento com os quais se estabelece diálogo a partir dos textos benjaminianos

  15. Walter Benjamin and his arcades project%本雅明“巴黎幻境”解读

    Institute of Scientific and Technical Information of China (English)

    孙秀昌

    2015-01-01

    本雅明在其规模宏大的“拱廊研究计划”中,将目光聚焦于作为19世纪的首都的巴黎,描述并阐发了巴黎的拱廊、世界博览会、居室装饰艺术、巴黎公社时期的街垒等都市景观。在他看来,整个巴黎就是由新技术与新经济营造起来的一种“幻境世界”。为此,他借着充斥商品拜物教气息的巴黎拱廊、世界博览会等景观揭示了“市场幻境”的秘密,借着“居室”对新技术与新经济的抗拒以及“青春艺术派”装饰对“居室”的消灭述说了“居室幻境”的命运,借着奥斯曼对巴黎的改建以及巴黎公社时期的街垒战和巴黎焚城等新行为分析了“文明本身的幻境”这一“辩证的意象”。%Walter Benjamin centers his arcades project on Paris of the 19th century ,describing and ex‐plicating the passages courverts ,world expo ,interior decoration ,Paris commune and all spectacles .Paris looks like a wonderland made up of new technology and new economy ,which becomes the target of criti‐cisms .Besides ,he adopts the innovative reconstruction of Paris by Haussmann and other events to account for the civilization as a dialectical image .

  16. A Truncated Arabidopsis NUCLEOSOME ASSEMBLY PROTEIN 1,AtNAP1;3T,Alters Plant Growth Responses to Abscisic Acid and Salt in the Atnap 1;3-2 Mutant

    Institute of Scientific and Technical Information of China (English)

    Zi-Qiang Liu; Juan Gao; Ai-Wu Dong

    2009-01-01

    Chromatin remodeling is thought to have crucial roles in plant adaptive response to environmental stimulus.Here,we report that,in Arebidopsis,the evolutionarily conserved histone chaperone,NUCLEOSOME ASSEMBLY PROTEIN 1 (NAP1),is involved in plant response to abscisic acid (ABA),a phytohormone important in stress adaptation.We show that simultaneous loss-of-function of AtNAP1;1,AtNAP1;2,and AtNAP1;3 (the triple mutant m123-1) caused a slight hypersensitive response to ABA in seedling growth.Strikingly,the other triple mutant m123-2 containing a different mutant allele of AtNAP1;3,the Atnap1;3-2 allele,showed a hyposensitive response to ABA and a decreased tolerance to salt stress.This ABAhyposensitive and salt response phenotype specifically associated with the Atnap1;3-2 mutant allele.We show that this mutant allele produced a truncated protein,AtNAP1;3T,which lacks 34 amino acids at the C-terminus compared to the wild-type protein AtNAP1;3.We further show that the heterozygous plants containing the Atnap1;3-2 mutant allele as well as transgenic plants overexpressing AtNAP1;3T exhibit ABA-hyposensitive phenotype.It thus indicates that AtNAP1;3T functions as a dominant negative factor in ABA response.The expression of some ABA-responsive genes,including genes encoding protein kinases and transcription regulators,was found perturbed in the mutant and in the AtNAP1;3T transgenic plants.Taken together,our study uncovered AtNAP1 proteins as positive regulators and AtNAP1;3T as a negative regulator in ABA signaling pathways,providing a novel link of chromatin remodeling to hormonal and stress responses.

  17. Testing some of Benjamin Graham’s Stock Selection Criteria: A Case of the FTSE Bursa Malaysia EMAS Index from Year 2000 to 2009

    Directory of Open Access Journals (Sweden)

    Desmond Chang

    2011-01-01

    Full Text Available Benjamin Graham, also known as the “father of value investing” proposed that investment in the stock exchange can be a safe endeavor while receiving gains that outperform the market if the investor makes carefully thought out purchases. This study aims to determine if the use of some of Benjamin Graham’s stock selection criteria is able to generate returns that are significantly greater than the returns in the stock exchange of Malaysia, particularly, the comprehensive FTSE Bursa Malaysia EMAS Index. This study collected secondary data regarding fundamentals of companies listed in the FTSE Bursa Malaysia EMAS Index from the year 2000 to 2009. Five criteria were set up in this research based on one or a combination of price-to-earnings ratio, price-to-book value, current ratio and dividend yield. The listed companies were screened using those criteria. An equally weighted portfolio was created using the screened companies and their one-year and two-year returns calculated. The returns were compared to the market return. Hypotheses of this research were tested using t-test statistic to determine the significance of the data. This research found that most of the screening criteria used generated returns that were higher than the market return in almost every year they were tested in. Benjamin Graham’s stock selection criteria although have been conceived over 80 years ago is still applicable today in the Malaysian market. Further research can be conducted with different criteria with varying holding periods and in different markets.

  18. Previsões imprevisíveis para o Brasil em 2011: resoluções para o novo governo à maneira de Benjamin Franklin

    Directory of Open Access Journals (Sweden)

    Paulo Roberto Almeida

    2011-01-01

    Full Text Available Exercício especulativo com base em treze princípios morais estabelecidos por Benjamin Frnaklin para sua conduta pessoal, aplicados ao comportamento do governo brasileiro no período 2011-2014. Contrariamente às previsões habituais a cada começo de ano, estas previsões se destinam a não serem realizadas, de acordo com uma postura contrarianista de estilo irônico, mas que reflete a realidade das políticas governamentais.

  19. El montaje en Aby Warburg Y Walter Benjamin. Un método alternativo para la representación de la violencia

    OpenAIRE

    Urueña Calderón, Juan Felipe

    2015-01-01

    El texto pretende esbozar un modo de disposición y exposición del archivo visual basado en la noción de montaje. El método se esbozará a partir de algunos de los elementos del proceder metodológico de Aby Warburg y Walter Benjamin. Las correspondencias que se han trazado entre las prácticas históricas de ambos autores, se aprovecharán para dar cuenta de un método que comparten en cuanto al modo especial de entender las relaciones entre los elementos del archivo y las temporalidades que es pos...

  20. Estruturas de sentimento na modernidade: um estudo sobre as experiências nas obras de Walter Benjamin, a propósito de Charles Baudelaire

    Directory of Open Access Journals (Sweden)

    Fabíola Calazans

    2011-01-01

    Full Text Available A partir da noção de “estruturas de sentimento” do pensador do materialismocultural Raymond Williams, pretende-se estudar as experiências tecnológicas perceptivas nacultura moderna, do século XIX, imanentes às obras de Walter Benjamin, particularmente,nos textos referentes a Charles Baudelaire. Para tanto, faz-se um estudo exploratório dasprincipais categorias de experiência para se compreender as implicações na modernidade.

  1. Review of Shipwreck at Cape Flora: the expeditions of Benjamin Leigh Smith, England’s forgotten Arctic explorer, by P. J. Capelotti

    OpenAIRE

    Barr, Susan

    2013-01-01

    Research for this biography has taken the author from the United States to various parts of the United Kingdom and to Franz Josef Land, as well as drawing on his field experiences from Svalbard. His thoroughness in digging up material has produced a detailed account of the rather amazing life of the British eccentric Benjamin Leigh Smith.(Published: 12 September 2013)Citation: Polar Research 2013, 32, 22576, http://dx.doi.org/10.3402/polar.v32i0.22576

  2. Uma história dos sem nomes: a visão de história em Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Eduardo Arriada

    2012-06-01

    Full Text Available  O presente artigo busca resgatar alguns aspectos fundamentais da obra benjaminiana, na tentativa de explicitar a visão de história construída pelo mesmo ao longo de uma vida prenhe de significados. Sua grande interrogação não se dirigia tanto a desvendar o segredo da história - res gestae - mas sim, a maneira que podemos falar dela, a esclarecer como um caos de acontecimentos pode fazer-se inteligível. A grande questão epistemológica que nos aponta Benjamin é: que história queremos fazer? Como conhecer a história? Ele nos adverte que a transformação do passado em história é função do presente do historiador, do momento do tempo e do lugar em que seu discurso é engendrado. Não se trata tanto de restaurar o passado, nem sequer de reconstruí-lo, como pensou o historicismo, mas sim de criá-lo. Palavras-chave: Walter Benjamin, história, narração.   Résume Cet article a le but de repérer quelques aspects essentiels de l'oeuvre benjaminienne, en essayant d'expliciter Ia vision d'histoire construite par l'auteur au long d'une vie pleine de signification. Sa grande interrogation ne s'appliquait pas à découvrir le secret de l'histoire ­res gestae - mais au mode que nons en pouvons parler et à éclairer comment un chaos peut devenir intelligíble. La grande question épistémologíque que Benjamin nous signale c'est: quelle histoire est-ce que nous voulons fàire? Comment connaitre l'histoire? IIs nous prévient que Ia transfonnation du passé en histoire est fonction du présent de l'historien, du temps et du lieu ou son discours est engendré. Il ne s'agit pas de restaurer le passé, ni même de le reconstruire, comme l'historicisme a pensé, mais de le créer. Mots-clé: Walter Benjamin, histoire, narration. 

  3. Association Between Insomnia Symptoms, Daytime Napping, And Falls In Community-dwelling Elderly [associação Entre Sintomas De Insônia, Cochilo Diurno E Quedas Em Idosos Da Comunidade

    OpenAIRE

    Pereira A.A.; Ceolim M.F.; Neri A.L.

    2013-01-01

    This study focused on associations between insomnia symptoms, daytime napping, and falls in community-dwelling elderly, using a population- based cross-sectional design and probability sample with 689 community-dwelling elders. The protocol consisted of self-reported and physical performance variables. The study used univariate and multivariate logistic regression analysis with statistical significance set at p < 0.05. Prevalence rates for insomnia symptoms and daytime napping were 49.9% (n =...

  4. Rapid spread of Clostridium difficile NAP1/027/ST1 in Chile confirms the emergence of the epidemic strain in Latin America.

    Science.gov (United States)

    Aguayo, C; Flores, R; Lévesque, S; Araya, P; Ulloa, S; Lagos, J; Hormazabal, J C; Tognarelli, J; Ibáñez, D; Pidal, P; Duery, O; Olivares, B; Fernández, J

    2015-10-01

    Clostridium difficile infection has gained importance in recent years as a result of the rapid spread of epidemic strains, including hypervirulent strains. This study reports the molecular epidemiology of C. difficile obtained from hospitalized patients in Chile. Seven hundred and nineteen isolates of toxigenic C. difficile from 45 hospitals across the country were characterized through toxin profile, pulsed-field gel electrophoresis (PFGE), and sequencing of the tcdC gene. In addition, polymerase chain reaction (PCR) ribotyping and multilocus sequence typing (MLST) were performed on a subset of selected strains. PFGE typing of 719 isolates of C. difficile produced 60 PFGE patterns (subtypes). Subtype 1 was predominant (79% of isolates) and related to the hypervirulent strain (NAP1). Subtype 1 showed 73% relatedness with nine other subtypes, which had a similar tcdC deletion. Subtype 1 corresponded to ribotype 027 and ST1. This report shows the wide dissemination of the hypervirulent strain NAP1/027/ST1 in Chile.

  5. Do deserto de gelo da abstração ao filosofar concreto: correspondência Adorno-Benjamin (1928-1940

    Directory of Open Access Journals (Sweden)

    Aléxia Bretas

    2013-12-01

    Full Text Available Trata-se de uma resenha crítica da controvertida correspondência entre Theodor W. Adorno e Walter Benjamin - dois dos mais expressivos representantes da chamada primeira geração de teóricos críticos associados ao Instituto de Pesquisa Social. Além de remeter suas cartas à respectiva experiência intelectual de cada um deles, este artigo busca oferecer uma análise fundamentada dessa instigante interlocução filosófica, para além da rígida bipolarização entre "adornianos" e "benjaminianos", que, via de regra, tem predominado em sua recepção especializada, dentro e fora do Brasil. Para isso, procura-se enfatizar o contraponto produtivo entre a Dialética negativa de Adorno e o projeto das Passagens de Benjamin, tomando como centro gravitacional o processo construtivo deste último trabalho - cerne tanto das afinidades, quanto das insolúveis dissonâncias entre os dois autores. Esta pesquisa tem o apoio da FAPESP.

  6. Experiência e tradição em Walter Benjamin: ressonâncias para a educação

    Directory of Open Access Journals (Sweden)

    Sérgio Luiz Alves da Rocha

    2016-02-01

    Full Text Available O proceso educativo faz com que diferentes gerações tenham que relacionar-se. Diante das modifcações dos últimos anos, alguns professores, adotam ora uma perspectiva saudosista, ora um discurso que valoriza de modo extremo os jovens e o novo. A ênfase, seja na experiência dos mais velhos, com a consequente desvalorização dos mais jovens, ou da experiência dos mais jovens, renegando-se a experiência dos mais velhos, nos impede de estabelecer pontes entre as gerações. Utilizo alguns textos de Walter Benjamin para refetir sobre o significado da experiência e da tradição. As ideias de Benjamin me permitem pensar sobre a relação entre as gerações no interior da escola a partir de uma postura ética que reconheça nosso papel como representantes de uma determinada tradição sem deixar de estarmos abertos às experiências dos jovens.

  7. Drosophila TAP/p32 is a core histone chaperone that cooperates with NAP-1, NLP, and nucleophosmin in sperm chromatin remodeling during fertilization.

    Science.gov (United States)

    Emelyanov, Alexander V; Rabbani, Joshua; Mehta, Monika; Vershilova, Elena; Keogh, Michael C; Fyodorov, Dmitry V

    2014-09-15

    Nuclear DNA in the male gamete of sexually reproducing animals is organized as sperm chromatin compacted primarily by sperm-specific protamines. Fertilization leads to sperm chromatin remodeling, during which protamines are expelled and replaced by histones. Despite our increased understanding of the factors that mediate nucleosome assembly in the nascent male pronucleus, the machinery for protamine removal remains largely unknown. Here we identify four Drosophila protamine chaperones that mediate the dissociation of protamine-DNA complexes: NAP-1, NLP, and nucleophosmin are previously characterized histone chaperones, and TAP/p32 has no known function in chromatin metabolism. We show that TAP/p32 is required for the removal of Drosophila protamine B in vitro, whereas NAP-1, NLP, and Nph share roles in the removal of protamine A. Embryos from P32-null females show defective formation of the male pronucleus in vivo. TAP/p32, similar to NAP-1, NLP, and Nph, facilitates nucleosome assembly in vitro and is therefore a histone chaperone. Furthermore, mutants of P32, Nlp, and Nph exhibit synthetic-lethal genetic interactions. In summary, we identified factors mediating protamine removal from DNA and reconstituted in a defined system the process of sperm chromatin remodeling that exchanges protamines for histones to form the nucleosome-based chromatin characteristic of somatic cells.

  8. Up-expression of NapA and other oxidative stress proteins is a compensatory response to loss of major Helicobacter pylori stress resistance factors.

    Science.gov (United States)

    Olczak, Adriana A; Wang, Ge; Maier, Robert J

    2005-11-01

    Twenty-six Helicobacter pylori targeted mutant strains with deficiencies in oxidative stress combating proteins, including 12 double mutant strains were analyzed via physiological and proteomic approaches to distinguish the major expression changes caused by the mutations. Mutations were introduced into both a Mtz(S) and a Mtz(R) strain background. Most of the mutations caused increased growth sensitivity of the strains to oxygen, and they all exhibited clear compensatory up-expression of oxidative stress resistance proteins enabling survival of the bacterium. The most frequent up-expressed oxidative stress resistance factor (observed in 16 of the mutants) was the iron-sequestering protein NapA, linking iron sequestration with oxidative stress resistance. The up-expression of individual proteins in mutants ranged from 2 to 10 fold that of the wild type strain, even when incubated in a low O(2) environment. For example, a considerably higher level of catalase expression (4 fold of that in the wild-type strain) was observed in ahpC napA and ahpC sodB double mutants. A Fur mutant up-expressed ferritin (Pfr) protein 20-fold. In some mutant strains the bacterial DNA is protected from oxidative stress damage apparently via overexpression of oxidative stress-combating proteins such as NapA, catalase or MdaB (an NADPH quinone reductase). Our results show that H. pylori has a variety of ways to compensate for loss of major oxidative stress combating factors.

  9. The neutrophil-activating Dps protein of Helicobacter pylori, HP-NAP, adopts a mechanism different from Escherichia coli Dps to bind and condense DNA.

    Science.gov (United States)

    Ceci, Pierpaolo; Mangiarotti, Laura; Rivetti, Claudio; Chiancone, Emilia

    2007-01-01

    The Helicobacter pylori neutrophil-activating protein (HP-NAP), a member of the Dps family, is a fundamental virulence factor involved in H.pylori-associated disease. Dps proteins protect bacterial DNA from oxidizing radicals generated by the Fenton reaction and also from various other damaging agents. DNA protection has a chemical component based on the highly conserved ferroxidase activity of Dps proteins, and a physical one based on the capacity of those Dps proteins that contain a positively charged N-terminus to bind and condense DNA. HP-NAP does not possess a positively charged N-terminus but, unlike the other members of the family, is characterized by a positively charged protein surface. To establish whether this distinctive property could be exploited to bind DNA, gel shift, fluorescence quenching and atomic force microscopy (AFM) experiments were performed over the pH range 6.5-8.5. HP-NAP does not self-aggregate in contrast to Escherichia coli Dps, but is able to bind and even condense DNA at slightly acid pH values. The DNA condensation capacity acts in concert with the ferritin-like activity and could be used to advantage by H.pylori to survive during host-infection and other stress challenges. A model for DNA binding/condensation is proposed that accounts for all the experimental observations.

  10. A Recombinant DNA Plasmid Encoding the sIL-4R-NAP Fusion Protein Suppress Airway Inflammation in an OVA-Induced Mouse Model of Asthma.

    Science.gov (United States)

    Liu, Xin; Fu, Guo; Ji, Zhenyu; Huang, Xiabing; Ding, Cong; Jiang, Hui; Wang, Xiaolong; Du, Mingxuan; Wang, Ting; Kang, Qiaozhen

    2016-08-01

    Asthma is a chronic inflammatory airway disease. It was prevalently perceived that Th2 cells played the crucial role in asthma pathogenesis, which has been identified as the important target for anti-asthma therapy. The soluble IL-4 receptor (sIL-4R), which is the decoy receptor for Th2 cytokine IL-4, has been reported to be effective in treating asthma in phase I/II clinical trail. To develop more efficacious anti-asthma agent, we attempt to test whether the Helicobacter pylori neutrophil-activating protein (HP-NAP), a novel TLR2 agonist, would enhance the efficacy of sIL-4R in anti-asthma therapy. In our work, we constructed a pcDNA3.1-sIL-4R-NAP plasmid, named PSN, encoding fusion protein of murine sIL-4R and HP-NAP. PSN significantly inhibited airway inflammation, decreased the serum OVA-specific IgE levels and remodeled the Th1/Th2 balance. Notably, PSN is more effective on anti-asthma therapy comparing with plasmid only expressing sIL-4R.

  11. Sleep duration, daytime napping, markers of obstructive sleep apnea and stroke in a population of southern China

    Science.gov (United States)

    Wen, Ye; Pi, Fu-Hua; Guo, Pi; Dong, Wen-Ya; Xie, Yu-Qing; Wang, Xiang-Yu; Xia, Fang-Fang; Pang, Shao-Jie; Wu, Yan-Chun; Wang, Yuan-Yuan; Zhang, Qing-Ying

    2016-01-01

    Sleep habits are associated with stroke in western populations, but this relation has been rarely investigated in China. Moreover, the differences among stroke subtypes remain unclear. This study aimed to explore the associations of total stroke, including ischemic and hemorrhagic type, with sleep habits of a population in southern China. We performed a case-control study in patients admitted to the hospital with first stroke and community control subjects. A total of 333 patients (n = 223, 67.0%, with ischemic stroke; n = 110, 23.0%, with hemorrhagic stroke) and 547 controls were enrolled in the study. Participants completed a structured questionnaire to identify sleep habits and other stroke risk factors. Least absolute shrinkage and selection operator (Lasso) and multiple logistic regression were performed to identify risk factors of disease. Incidence of stroke, and its subtypes, was significantly associated with snorting/gasping, snoring, sleep duration, and daytime napping. Snorting/gasping was identified as an important risk factor in the Lasso logistic regression model (Lasso’ β = 0.84), and the result was proven to be robust. This study showed the association between stroke and sleep habits in the southern Chinese population and might help in better detecting important sleep-related factors for stroke risk. PMID:27698374

  12. Investigation of thermonuclear $^{18}$Ne($\\alpha$,$p$)$^{21}$Na rate via resonant elastic scattering of $^{21}$Na+$p$

    CERN Document Server

    Zhang, L Y; Parikh, A; Xu, S W; Yamaguchi, H; Kahl, D; Kubono, S; Mohr, P; Hu, J; Ma, P; Chen, S Z; Wakabayashi, Y; Wang, H W; Tian, W D; Chen, R F; Guo, B; Hashimoto, T; Togano, Y; Hayakawa, S; Teranishi, T; Iwasa, N; Yamada, T; Komatsubara, T; Zhang, Y H; Zhou, X H

    2014-01-01

    The $^{18}$Ne($\\alpha$,$p$)$^{21}$Na reaction is thought to be one of the key breakout reactions from the hot CNO cycles to the rp-process in type I x-ray bursts. In this work, the resonant properties of the compound nucleus $^{22}$Mg have been investigated by measuring the resonant elastic scattering of $^{21}$Na+$p$. An 89 MeV $^{21}$Na radioactive beam delivered from the CNS Radioactive Ion Beam Separator bombarded an 8.8 mg/cm$^2$ thick polyethylene (CH$_{2}$)$_{n}$ target. The $^{21}$Na beam intensity was about 2$\\times$10$^{5}$ pps, with a purity of about 70% on target. The recoiled protons were measured at the center-of-mass scattering angles of $\\theta_{c.m.}$$\\approx$175.2${^\\circ}$, 152.2${^\\circ}$, and 150.5${^\\circ}$ by three sets of $\\Delta E$-$E$ telescopes, respectively. The excitation function was obtained with the thick-target method over energies $E_x$($^{22}$Mg)=5.5--9.2 MeV. In total, 23 states above the proton-threshold in $^{22}$Mg were observed, and their resonant parameters were determ...

  13. Purification and characterization of a novel alginate lyase from the marine bacterium Cobetia sp. NAP1 isolated from brown algae.

    Science.gov (United States)

    Yagi, Hisashi; Fujise, Asako; Itabashi, Narumi; Ohshiro, Takashi

    2016-12-01

    The application of marine resources, instead of fossil fuels, for biomass production is important for building a sustainable society. Seaweed is valuable as a source of marine biomass for producing biofuels such as ethanol, and can be used in various fields. Alginate is an anionic polysaccharide that forms the main component of brown algae. Various alginate lyases (e.g. exo- and endo-types and oligoalginate lyase) are generally used to degrade alginate. We herein describe a novel alginate lyase, AlgC-PL7, which belongs to the polysaccharide lyase 7 family. AlgC-PL7 was isolated from the halophilic Gram-negative bacterium Cobetia sp. NAP1 collected from the brown algae Padina arborescens Holmes. The optimal temperature and pH for AlgC-PL7 activity were 45 °C and 8, respectively. Additionally, AlgC-PL7 was thermostable and salt-tolerant, exhibited broad substrate specificity, and degraded alginate into monosaccharides. Therefore, AlgC-PL7 is a promising enzyme for the production of biofuels.

  14. Benjamin's Angel of History and the Work of Mourning in Ethical Remembrance: Understanding the Effect of W.G. Sebald's Novels in the Classroom

    Science.gov (United States)

    Joldersma, Clarence W.

    2014-01-01

    The paper develops a conceptual framework for understanding the work of ethical remembrance in the classroom. Using David Hansen's recent example of using Sebald's novels in his classroom to do the work or remembrance, the paper argues that the effect of Sebald's novels is best understood using Walter Benjamin's figure of the…

  15. Review: Benjamin Rubbers, Le paternalisme en question: Les anciens ouvriers de la Gécamines face à la libéralisation du secteur minier katangais (RD Congo (2013

    Directory of Open Access Journals (Sweden)

    Katja Werthmann

    2016-01-01

    Full Text Available Review of the monograph: Benjamin Rubbers, Le paternalisme en question: Les anciens ouvriers de la Gécamines face à la libéralisation du secteur minier katangais (RD Congo, Cahiers africains, 81, Tervuren: Musée royal de l’Afrique centrale / Paris: L’Harmattan, 2013, ISBN: 9782343002385, 315 pp.

  16. Nicole Fouché. Benjamin Franklin et Thomas Jefferson : Aux sources de l’amitié franco-américaine 1776-1808.

    Directory of Open Access Journals (Sweden)

    Nathalie Caron

    2006-04-01

    Full Text Available Spécialiste des relations franco-américaines, Nicole Fouché propose une comparaison presque terme à terme entre deux Pères fondateurs de renom, Benjamin Franklin et Thomas Jefferson. Ce choix, comme la brièveté de l’ouvrage, le nombre limité de notes, la présence d’une courte bibliographie et l’absence d’index, répond aux exigences de la collection « Biographies américaines », dirigée par Annick Foucrier, dont l’objectif est de « présenter l’histoire des Etats-Unis à travers les vies de deux ...

  17. 本杰明的现代都市文化批判思想%Benjamin on Culture of Modern Metropolis

    Institute of Scientific and Technical Information of China (English)

    吴友军; 张宇雷

    2014-01-01

    Walter Benjamin is an important thinker in urban culture studies .In his earlier time , he paid much attention to the literature critics .He studied modern metropolis culture with the core of Arcades Project , and analyzed the mixture of civilization and un -civilization in modern culture , which are the omen and core of the enlightenment dialect .%本杰明是都市文化研究中的重要人物,他从文艺批评对现代性文化进行探讨入手,以拱廊街计划为核心进行了现代都市文化的研究,对现代文化中的文明和野蛮的交织进行了分析,这是启蒙辩证法的先兆甚至核心。

  18. The Liberating Role of Astronomy in an Old Farmer's Almanac: David Rittenhouse's "Useful Knowledge" and a Benjamin Banneker Almanac for 1792

    Science.gov (United States)

    Walker, Theodore, Jr.

    2012-06-01

    Traditionally, astronomy met theology and political ethics in almanacs. As presented in early New England almanacs of the farmer's type, astronomy was deity-affirming and liberty-oriented. The old English label for astronomy that affirms theology was "Astro-theology" (William Derham, 1715). The New England rendering of astro-theology was so strongly oriented towards liberty that it can now be labeled astro-liberation theology. This 21st century label is appropriate because 18th century New England printers and astronomers used astronomy to demonstrate the glory of the Creator (astro-theology) and to encourage liberation from colonialism and slavery (astro-liberation theology). A philosophy of astronomy as "useful knowledge' expressed by David Rittenhouse in 1775 - and implicit in a Benjamin Banneker almanac for 1792 - included liberty-oriented visions of planet Earth as seen from outer space, and liberty-oriented visions of intelligent life on other planets orbiting other stars.

  19. Do Génio ao jogo. O papel da Técnica na Transformação dos Valores Estéticos em Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Nélio Rodrigues Conceição

    Full Text Available Resumo: Analisando o papel desempenhado pela questão da técnica no pensamento de Walter Benjamin, o artigo debruça-se sobre a transformação dos valores estéticos, na modernidade. As técnicas de reprodução/registo inventadas nos séculos XIX e XX, como a fotografia e o cinema, obrigaram a uma revisão das articulações entre arte, técnica e história, articulações que Benjamin desenvolveu em diversos sentidos. Contudo, não encontramos, nos seus textos, uma filosofia da técnica de princípios claramente estabelecidos. Portanto, o presente artigo visa estabelecer uma constelação de temas, os quais, brotando dos seus textos, nos permitem clarificar como a técnica influencia a transformação e a criação de valores estéticos, sendo estes entendidos como eixos em torno dos quais se dão a produção e a crítica dos fenómenos estéticos. A fotografia, constituindo um momento de viragem incisivamente estudado pelo autor, é o fio condutor das diferentes leituras. Historicidade da percepção; dimensão política da arte; sua relação com a memória; elemento de jogo: são estes os quatro eixos em torno dos quais se procura clarificar e, sempre que possível, prolongar a proposta benjaminiana.

  20. El hilo sutil de la rememoración. Felicidad y redención histórica en la obra de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Palermo, Sandra Viviana

    2011-12-01

    Full Text Available This paper presents an analysis of the structure of the Messianic time that Benjamin tries to think from the point of view of its inextricable connection to the concepts of happiness and redemption. The conceptual route goes from the early writings, in which the constellation happiness-redemption acquires a definite physiognomy —combining with an elegant and specific critique of modernity— to the thesis Über den Begriff der Geschichte, in which this constellation is intertwined with the figure of Eingedenken, which determines an important conceptual shift in the theoretical horizon of the author, also representing the specificity and richness of his reflections on time and history.

    El texto presenta un análisis de la estructura del tiempo mesiánico que Benjamin intenta pensar desde el punto de vista de su indisoluble conexión con los conceptos de felicidad y redención. El recorrido conceptual va desde los escritos de juventud, en los que la constelación felicidad-redención adquiere una fisionomía definida —conjugándose con una crítica elegante y puntual de la modernidad—, a las tesis Sobre el concepto de historia, en las cuales tal constelación se entrelaza con la figura del Eingedenken, que determina un desplazamiento conceptual importante en el horizonte teórico del autor, representando además la especificidad y la riqueza de su reflexión sobre el tiempo y la historia.

  1. Sleep and Alertness Management III: Effects of a Nap and Hypnotics on Performance During the Late Evening, Night and Early Morning in Marmosets

    Science.gov (United States)

    2006-11-01

    hypnotics on performance Info-DenV@tno.nl during the late evening, night and early morning in marmosets Date November 2006 Author(s) Dr. I.H.C.I.M...so-called post-nap hangovers. In this study, the marmoset monkey model was validated as a model for testing the effects of drugs on performance during...evening, night and early morning missions was tested. It was proven that the homeostasis in marmoset monkeys after sleep deprivation is similar to the

  2. Identification of nucleosome assembly protein 1 (NAP1) as an interacting partner of plant ribosomal protein S6 (RPS6) and a positive regulator of rDNA transcription

    Energy Technology Data Exchange (ETDEWEB)

    Son, Ora [Department of Biological Science, Sookmyung Women' s University, Seoul 140-742 (Korea, Republic of); Kim, Sunghan [Department of Biological Science, Sookmyung Women' s University, Seoul 140-742 (Korea, Republic of); Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 151-921 (Korea, Republic of); Shin, Yun-jeong [Department of Biological Science, Sookmyung Women' s University, Seoul 140-742 (Korea, Republic of); Kim, Woo-Young [College of Pharmacy, Sookmyung Women' s University, Seoul 140-742 (Korea, Republic of); Koh, Hee-Jong, E-mail: heejkoh@snu.ac.kr [Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 151-921 (Korea, Republic of); Cheon, Choong-Ill, E-mail: ccheon@sookmyung.ac.kr [Department of Biological Science, Sookmyung Women' s University, Seoul 140-742 (Korea, Republic of)

    2015-09-18

    The ribosomal protein S6 (RPS6) is a downstream component of the signaling mediated by the target of rapamycin (TOR) kinase that acts as a central regulator of the key metabolic processes, such as protein translation and ribosome biogenesis, in response to various environmental cues. In our previous study, we identified a novel role of plant RPS6, which negatively regulates rDNA transcription, forming a complex with a plant-specific histone deacetylase, AtHD2B. Here we report that the Arabidopsis RPS6 interacts additionally with a histone chaperone, nucleosome assembly protein 1(AtNAP1;1). The interaction does not appear to preclude the association of RPS6 with AtHD2B, as the AtNAP1 was also able to interact with AtHD2B as well as with an RPS6-AtHD2B fusion protein in the BiFC assay and pulldown experiment. Similar to a positive effect of the ribosomal S6 kinase 1 (AtS6K1) on rDNA transcription observed in this study, overexpression or down regulation of the AtNAP1;1 resulted in concomitant increase and decrease, respectively, in rDNA transcription suggesting a positive regulatory role played by AtNAP1 in plant rDNA transcription, possibly through derepression of the negative effect of the RPS6-AtHD2B complex. - Highlights: • Nucleosome assembly protein 1 (AtNAP1) interacts with RPS6 as well as with AtHD2B. • rDNA transcription is regulated S6K1. • Overexpression or down regulation of AtNAP1 results in concomitant increase or decrease in rDNA transcription.

  3. Impairment of mitochondria dynamics by human A53T α-synuclein and rescue by NAP (davunetide) in a cell model for Parkinson's disease.

    Science.gov (United States)

    Melo, T Q; van Zomeren, K C; Ferrari, M F R; Boddeke, H W G M; Copray, J C V M

    2017-03-01

    The formation of oligomers and aggregates of overexpressed or mutant α-synuclein play a role in the degeneration of dopaminergic neurons in Parkinson's disease by causing dysfunction of mitochondria, reflected in their disturbed mobility and production of ROS. The mode of action and mechanisms underlying this mitochondrial impairment is still unclear. We have induced stable expression of wild-type, A30P or A53T α-synuclein in neuronally differentiated SH-SY5Y neuroblastoma cells and studied anterograde and retrograde mitochondrial trafficking in this cell model for Parkinson's disease. In contrast to wild-type and A30P, A53T α-synuclein significantly inhibited mitochondrial trafficking, at first retrogradely and in a later stage anterogradely. Accordingly, A53T α-synuclein also caused the highest increase in ROS production in the dysmobilized mitochondria in comparison to wild-type or A30P α-synuclein. Treatment with NAP, the eight amino acid peptide identified as the active component of activity-dependent neuroprotective protein (ADNP), completely annihilated the adverse effects of A53T on mitochondrial dynamics. Our results reveal that A53T α-synuclein (oligomers or aggregates) leads to the inhibition of mitochondrial trafficking, which can be rescued by NAP, suggesting the involvement of microtubule disruption in the pathophysiology of Parkinson's disease.

  4. Fluoroquinolone and Macrolide Exposure Predict Clostridium difficile Infection with the Highly Fluoroquinolone- and Macrolide-Resistant Epidemic C. difficile Strain BI/NAP1/027.

    Science.gov (United States)

    Wieczorkiewicz, Jeffrey T; Lopansri, Bert K; Cheknis, Adam; Osmolski, James R; Hecht, David W; Gerding, Dale N; Johnson, Stuart

    2015-11-02

    Antibiotics have been shown to influence the risk of infection with specific Clostridium difficile strains as well as the risk of C. difficile infection (CDI). We performed a retrospective case-control study of patients infected with the epidemic BI/NAP1/027 strain in a U.S. hospital following recognition of increased CDI severity and culture of stools positive by C. difficile toxin immunoassay. Between 2005 and 2007, 72% (103/143) of patients with first-episode CDIs were infected with the BI strain by restriction endonuclease analysis (REA) typing. Most patients received multiple antibiotics within 6 weeks of CDI onset (median of 3 antibiotic classes). By multivariate analysis, fluoroquinolone and macrolide exposure was more frequent among BI cases than among non-BI-infected controls (odds ratio [OR] for fluoroquinolones, 3.2; 95% confidence interval [CI], 1.3 to 7.5; (P Fluoroquinolone use, macrolide use, and C. difficile resistance to these antibiotic classes were associated with infection by the epidemic BI strain of C. difficile in a U.S. hospital during a time when CDI rates were increasing nationally due to the highly fluoroquinolone-resistant BI/NAP1/027 strain. Copyright © 2015, American Society for Microbiology. All Rights Reserved.

  5. MELANCOLÍA Y FLEMA (CONCEPCIONES HUMORALISTAS EN TORNO A LA NOCIÓN DE MELANCOLÍA EN "EL ORIGEN DEL TRAUERSPIEL ALEMÁN" DE WALTER BENJAMIN

    Directory of Open Access Journals (Sweden)

    Juan Horacio de Freitas

    2013-12-01

    Full Text Available If something is usually considered to be remarkable about “The origin of German tragic drama”, a book written by Walter Benjamin in order to be a postulant as a teacher at the University, is its conceptual richness and innovation. This essay tries to accomplish two objectives: On the one hand, to understand the sense of one of these notions, that of melancholy, which is so important for Benjamin both in this work and all along his philosophical production. On the other hand, an attempt is made to investigate both implicit and explicit sources used by the philosopher to refer to the term under consideration. This will lead us to deal with classic medicine authors such as Hippocrates and Galen, from the renacentist astrological ideological repertoire such as Ficino and some Freudian proposals about mourning and melancholy.

  6. La enfermedad histórica de la hermenéutica y su transformación dialéctica. El pensamiento débil entre Gadamer y Benjamin

    Directory of Open Access Journals (Sweden)

    Leandro Catoggio

    2013-05-01

    Full Text Available El presente trabajo tiene por fin mostrar cómo la hermenéutica nihilista de Gianni Vattimo mediante su crítica a la hermenéutica ontológica de Gadamer recupera la figura de Walter Benjamin y la asocia al proyecto de Heidegger. Esto lleva a que el presente trabajo, en primer lugar, describa cuáles son las críticas que Vattimo le realiza a Gadamer; y, en segundo lugar, muestre cómo es posible aunar la filosofía de Heidegger con el pensamiento crítico de Benjamin. Por último, se indica mediante la congruencia de estos autores cómo es posible la construcción de un sujeto post-metafísico

  7. "Estetização da política e politização da arte": a estética do fascismo nas obras de Walter Benjamin

    OpenAIRE

    Rui Bragado Sousa

    2015-01-01

    O artigo examina a ascensão do fascismo na Alemanha a partir da estética de Walter Benjamin e propõe, ao final, um diálogo com Ernst Bloch. O método visa escapar de interpretações meramente econômicas que supostamente possibilitaram a chegada de Hitler ao poder. Procura-se um campo semântico mais vasto, dialético, como os conceitos utilizados por Benjamin como messianismo, alegoria e origem (ursprung). A “origem” é um protofenômeno no sentido teológico, quer seja ele o Paraíso ou o comunismo ...

  8. The Application of the Survival Culture of "The Autobiography of Benjamin Franklin"into Colleges%《富兰克林自传》生存文化在大学里的应用

    Institute of Scientific and Technical Information of China (English)

    汪春英; 董茜

    2015-01-01

    《富兰克林自传》是一部优秀传记文学作品,详细叙述了富兰克林一生的成长、发展、成功以及他所做的公益事业和对社会的贡献。仔细研读《自传》中的生存文化,挖掘人生生存与发展的要义,有利于个人与社会的发展。就一个大学来说,我们能从《自传》这本书中找出大学发展的路径,因为几乎每一个人,无论是大学生、教师、还是大学领导人,都能从他身上借鉴一些生存启示。%"The Autobiography of Benjamin Franklin",an excellent biographical literature book,elaborates clearly how Frank-lin grew,developed,succeeded and what public welfare services and contributions he did to the society.Reading "The Autobi-ography of Benjamin Franklin"thoroughly and gaining Benjamin Franklin's life experience or living principles helps our person-al development and social progress.As far as an ordinary college is concerned,its development secrets and problem resolutions may be found out from "The Autobiography of Benjamin Franklin",as all persons,including college students,teachers and leaders,we can learn some living skills from Franklin.

  9. Huellas de la ciudad. Reflexiones sobre la relación entre ciudad, monumento y fotografía a partir de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Rabe, Ana María

    2011-02-01

    Full Text Available There is a deep relationship between monument and photography which is practically inseparable in the case of a town’s landmark. The monument and moreover the town’s landmark needs to be reproduced, and that means firstly: shot. But do we really see the town when we are contemplating monuments or their reproduction? Current life of a town presents itself in thousand ways. But no thousand pictures are able to compose the face of a town. If one seeks to reflect it, one has to do more than to reproduce that what presents itself with ostentation; one has to catch in flight what appears disappearing in a fugacious moment. For this, it’s necessary to catch the accidental trace behind the intentional traces. Holding a dialogue with Walter Benjamin as well as with Alfred Döblin, this text reflects on the relationship between picture and remembrance as well as the different dimensions of time, and in this connection on possibilities and limits in representing life and character of a town.

    Hay una relación estrecha entre monumento y fotografía, que es prácticamente inseparable en el caso del símbolo de la ciudad. El monumento y más el símbolo de una ciudad necesita ser reproducido, lo cual quiere decir en primer lugar: fotografiado. ¿Pero vemos realmente la ciudad cuando contemplamos los monumentos o bien la reproducción de los mismos? La vida actual de la ciudad se manifiesta de mil maneras. Pero no son mil imágenes las que componen el rostro de la ciudad. Para reflejarlo, no basta con reproducir lo que se presenta ostensivamente; hay que atrapar al vuelo lo que aparece desapareciendo en un momento fugaz. Para ello hace falta atrapar las huellas casuales tras aquellas intencionales. En diálogo con Walter Benjamin y también con Alfred D��blin se reflexiona en este texto sobre la relación de la imagen con el recuerdo y las diferentes dimensiones del tiempo, y en este contexto sobre posibilidades y límites de la representaci

  10. Educação e experiência: veredas possíveis entre Guimarães Rosa, M. Blanchot e W. Benjamin = Education and experience: possible paths between Guimarães Rosa, M. Blanchot and W. Benjamin

    Directory of Open Access Journals (Sweden)

    Menezes, Magali Mendes de

    2013-01-01

    Full Text Available O presente texto tem como objetivo analisar a obra Grande sertão: veredas de Guimarães Rosa, um importante nome da literatura brasileira. O fio condutor desta análise é o conceito de experiência presente no pensamento de Maurice Blanchot e Walter Benjamin. A experiência aparece aqui tanto para compreender o exercício da escrita, enquanto narrativa, como para compreender a relação do ser humano com o mundo. Nesta compreensão buscarse- a pensar a relação possível entre a literatura, filosofia e educação, em um diálogo constante com a própria vida

  11. Ideologia alemã: a produção do mito na teórica do fascismo em W. Benjamin e S. Kracauer [German Ideology: The Production of Myth in the Theory of Fascism in W. Benjamin and S. Kracauer

    Directory of Open Access Journals (Sweden)

    Robson Breno Dourado de Araujo

    2017-05-01

    Full Text Available Este texto discute a constituição ideológica da intelectualidade alemã no período pós Primeira-Guerra tal como exposto por Walter Benjamin e Siegfried Kracauer. Inicialmente, apresentamos o mote formal da produção literária de Ernst Jünger e do Círculo Tat, analisados pelos autores, respectivamente, e as condições de emergência da “superestrutura das relações materiais” como posicionamento político capaz de fundar o mito da germanidade que alicerça o novo nacionalismo de então. Desta feita, tematiza-se o modo como tal produção intelectual gerencia a ideia do herói de guerra e do Estado-Povo pervertendo a experiência da guerra de trincheira sobrepondo-lhe uma miragem.

  12. Estratégias de Investimento em Bolsa de Valores: Uma Pesquisa Exploratória da Visão Fundamentalista de Benjamin Graham

    Directory of Open Access Journals (Sweden)

    Vinicius de Castro Scottá dos Passos

    2010-11-01

    Full Text Available

    Investimentos em bolsa de valores têm sido associados às incertezas e grandes riscos, quando na verdade existem teorias que podem ser assimiladas por qualquer pessoa que deseje diversificar seus investimentos. Estudar as ferramentas de análise de mercado de ações e as estratégias utilizadas por célebres investidores pode oferecer preciosas orientações de como devemos nos preparar psicologicamente e tecnicamente para operar no mercado de ações. O cenário globalizado favorece o fluxo de informação, mas, ainda assim, existe a assimetria informacional do mercado. A análise fundamentalista tem sido forte aliada do mercado de capitais e tem em Benjamin Graham um de seus principais expoentes. Este artigo versará sobre as teorias de Graham, buscando a aplicabilidade de tais premissas na realidade brasileira. A realização da pesquisa poderá ser mais um passo no aprendizado de variáveis que se correlacionam com o mercado bursátil, contribuindo para futuros investidores.

  13. 走近本杰明·格雷厄姆%A closer look at Mr. Benjamin Graham, the investment virtuoso

    Institute of Scientific and Technical Information of China (English)

    张渝涓

    2001-01-01

    @@ 价值投资之父本杰明·格雷厄姆(Benjamin Grahm)无疑是证券界最著名的金融思想家之一.本以"思考者"自居,毕生著书立说颇多,除(Securitv Analysis)这一经典著作外,还为学术刊物、大众媒体和杂志撰写了大量文章.本曾经两度以其文章引发了大规模的股市反弹,一次是在1929年股市全盘崩溃之后,另一次是在70年代漫长的熊市之后.而当今世界上最成功的投资人士--沃伦·巴菲特坚持认为,任何投资者起步时都应从拜读格雷厄姆--价值投资理论之父的著作开始.

  14. Estratégias de Investimento em Bolsa de Valores: Uma Pesquisa Exploratória da Visão Fundamentalista de Benjamin Graham

    Directory of Open Access Journals (Sweden)

    Vinicius de Castro Scottá dos Passos

    2010-11-01

    Full Text Available Investimentos em bolsa de valores têm sido associados às incertezas e grandes riscos, quando na verdade existem teorias que podem ser assimiladas por qualquer pessoa que deseje diversificar seus investimentos. Estudar as ferramentas de análise de mercado de ações e as estratégias utilizadas por célebres investidores pode oferecer preciosas orientações de como devemos nos preparar psicologicamente e tecnicamente para operar no mercado de ações. O cenário globalizado favorece o fluxo de informação, mas, ainda assim, existe a assimetria informacional do mercado. A análise fundamentalista tem sido forte aliada do mercado de capitais e tem em Benjamin Graham um de seus principais expoentes. Este artigo versará sobre as teorias de Graham, buscando a aplicabilidade de tais premissas na realidade brasileira. A realização da pesquisa poderá ser mais um passo no aprendizado de variáveis que se correlacionam com o mercado bursátil, contribuindo para futuros investidores.

  15. O problema da estética em Arthur Danto e a questão da crítica em Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Rizzia Rocha

    2015-07-01

    Full Text Available Diante das mudanças ocorridas na arte das últimas décadas, os critérios estéticos tradicionais perdem sua eficácia para pensar a produção artística contemporânea. Consequentemente, a recepção da obra de arte, assentada na tradição, torna-se inócua. Neste artigo apresento a necessidade de uma reconfiguração da recepção do objeto artístico a partir da crítica não normativa da obra de arte, cunhada por Walter Benjamin, em associação às reflexões sobre estética e filosofia da arte desenvolvidas por Arthur Danto. A aproximação entre esses dois autores, embora mantenha uma dimensão controversa, propõe rearticular aspectos do pensamento benjaminiano sobre a arte, corroborando sua crítica ao ideal forjado pela razão iluminista. Assim, o presente artigo expõe o problema da estética e da história partindo do olhar que o contemporâneo lança ao passado, o qual ressignifica importantes modificações que o século XVIII introduziu no conceito de arte.

  16. Velhice, experiência e resistência: a ressignificação da memória nas obras de Ingmar Bergman e Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Rafael de Souza Dias

    2014-10-01

    Full Text Available Este texto apresenta uma breve reflexão sobre o ato de rememorar como um exercício motivador e gerador de novas perspectivas diante da vida na velhice. Para sua elaboração, utilizou-se como referência o filme “Morangos Silvestres”, de Ingmar Bergman, e o texto “A Infância em Berlim por volta de 1900”, de Walter Benjamin. Na obra literária, nos deparamos com a autobiografia de um filósofo que escreve diante da perseguição nazista e que vê a sua cidade sucumbir aos poderes autoritários, utilizando-se, assim, da memória como uma forma de lutar contra a opressão. No cinema, acompanhamos um personagem idoso e supostamente fictício que ao perceber a proximidade da morte, mergulha em uma viagem através de sua juventude, onde revê suas escolhas e avalia sua vida. Em ambas as obras, os personagens fazem das suas lembranças uma forma de ressignificar o presente.

  17. Baudelaire desabrigado: a questão do espaço em «Paris do Segundo Império» de Walter Benjamin

    Directory of Open Access Journals (Sweden)

    Georg Otte

    2011-10-01

    Full Text Available O artigo comenta o ensaio “Paris do Segundo Império” de Walter Benjamin a partir da questão do espaço urbano e a partir da oposição que o autor estabelece entre o espaço do burguês (a casa e o do flâneur (a rua, este último representado por Baudelaire tanto como cidadão quanto poeta. O ensaio de Benjamim evidencia uma ambigüidade entre sua posição marxista declarada e sua simpatia pelo anarquismo político e poético de Baudelaire.L’article commente l’essai “Paris du Second Empire” de Waler Benjamim à partir de la question de l’espace urbain et l’opposition que l’auteur établit entre l’espace bourgeois (la maison et celui do flâneur (la rue, représenté par Baudelaire comme citoyen et comme poète. L’essai de Benjamim met en évidence une ambiguïté entre sa position marxiste déclarée et ses sympathies pour l’anarquisme politique et poétique de Baudelaire.

  18. Benjamin Hobson (1816-1873): His work as a medical missionary and influence on the practice of medicine and knowledge of anatomy in China and Japan.

    Science.gov (United States)

    Bosmia, Anand N; Patel, Toral R; Watanabe, Koichi; Shoja, Mohammadali M; Loukas, Marios; Tubbs, R Shane

    2014-03-01

    Benjamin Hobson was a British missionary and physician who lived in China for twenty years. He founded multiple hospitals in Southern China and used his knowledge of Western medicine to educate Chinese doctors. He wrote several medical textbooks in Chinese of which the first was the A New Theory of the Body (1851). The illustrations from his book were renditions and originals from William Cheselden's Anatomical Tables (1730) and Osteographia (1733).The Japanese version of Hobson's work appeared in Japan during the bakumatsu period (1853-1867), when Japan ended its isolationist foreign policy and began opening itself to the West. During this time, many books from Europe were translated into Chinese to then find their way into Japan. The Chinese anatomy textbook by Hobson (Quanti Xinlun) was instrumental in introducing Western anatomic knowledge to the Chinese and thereby catalyzing a significant change in the practice of medicine in China. A Japanese translation (Zen Tai Shin Ron) of this text published in the 19th century is reviewed.

  19. Kollektiivne töö, rohujuuredemokraatia ja opositsioonikultuuri visuaalsed vormid tänapäeva Eestis = Collective work, grassroots democracy and visual forms of opposition culture in contemporary Estonia / Airi Triisberg

    Index Scriptorium Estoniae

    Triisberg, Airi, 1982-

    2009-01-01

    Kokkupuutepunktidest sotsiaalsete liikumiste ja kaasaegse kunsti vahel tänapäeva Eestis, keskendudes kollektiivse ja sekkuva iseloomuga praktikatele avalikus ruumis. Prussakovi nimelise jalgrattaühingu Vabaduse väljaku aktsioonist Tallinnas, Linnalabori katuseaia jt. projektidest, "vabaduse plakati" aktsioonist, Johnson&Johnson "Paldiski projektist" jm.

  20. IVIG – A cure to severe refractory NAP-1 Clostridium difficile colitis? A case of successful treatment of severe infection, which failed standard therapy including fecal microbiota transplants and fidaxomicin

    Directory of Open Access Journals (Sweden)

    Kelley Coffman

    2017-01-01

    Full Text Available The mainstay treatment of Clostridium difficile infections (CDI is antimicrobials with growing support for fecal microbiota transplants. We report the first case of an elderly man with severe refractory NAP-1 pseudomembranous CDI who failed all medical therapy and two fecal transplants with response only seen after administration of intravenous immunoglobulin.